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HomeMy WebLinkAboutMiscellaneous - Weston Solutions, Inc (2)WESJON SOLUTIONS, INC. t � _� � � *.s }„ r JS .* •- ,1- '�` 4'i ' .. � - _t•i l'. a n.. ;�� + r,v 5•l4 a 'ki i• _ t• - '' - a F cis y,. � 1'� i' .'.� ami. � 3 i y e 1`• - A " � PHASE V INSPECTION AND MONITORING REPORT BUILDINGS 30,51 AND 70/71 REMEDIATION SYSTEMS MERRIMACK VALLEY WORKS NORTH ANDOVER, MASSACHUSETTS SEPTEMBER 2009 RTN: 3-00174 Prepared for: ALCATEL-LUCENT USA, INC. 600 Mountain Avenue Room 1 F -102G Murray Hill,'New Jersey 07974 Prepared by: WESTON SOLUTIONS, INC. 43 Constitution Drive, Suite 2 West Bedford, New Hampshire 03110 September 2009 Work Order No. 11621.039.001 n Phase V Inspection and Monitoring Repoli Buildings 30, SI and 70/71 Remediation Systems �. Li TABLE OF CONTENTS n Section Page n1. INTRODUCTION..........................................................................................................1-1 1.1 SITE DESCRIPTION n n L� 1.2 REMEDIATION SYSTEMS DESCRIPTION.................................................... 1-2 1.2.1 Building 30 Former Machine Shop Area .............................................. 1-3 1.2.2 Building 70/71...................................................................................... 1-4 1.2.3 Building 51............................................................................................1-6 2. INSPECTION, REMEDIATION, AND MONITORING .......................................... 2-1 n 2.1 BUILDING 30 REMEDIATION SYSTEM........................................................ 2-1 L, 2.1.1 Type and Frequency of Building 30 Inspection and Monitoring.......... 2-1 3-1 2.1.2 Description of Significant Modifications to the Building 30 3.1.3 Building 30 Indoor Air Monitoring and Results ................................... 3-2 3.1.4 Building 30 Groundwater Monitoring and Results ............................... Inspection and/or Monitoring Program ................................................. 2-2 2.1.3 Conditions Affecting Performance of Building 30 Remediation 3.2.1 Building 70/71 Remediation System Monitoring and Results ............. 3-5 3.2.2 Building 70/71 Soil Vapor Extraction System Monitoring System and Corrective Actions............................................................. 2-2 n 2.2 BUILDING 70/71 REMEDIATION SYSTEM ................................................... 2-3 `-' 2.2.1 Type and Frequency of Building 70/71 Inspection and Monitoring..... 2-3 2.2.2 Description of Significant Modifications to the Building 70/71 Inspection and/or Monitoring Program ................................................. 2-4 `-' 2.2.3 Conditions Affecting Performance of Building 70/71 Remediation n System and Corrective Actions............................................................. 2-5 1 ' 2.3 BUILDING 51 REMEDIATION SYSTEM........................................................ 2-6 u 2.3.1 Type and Frequency of Building 51 Inspection and Monitoring.......... 2-6 11 C n L 3. RESULTS OF INSPECTION AND MONITORING PROGRAM ........................... 3-1 3.1 RESULTS OF BUILDING 30 INSPECTION AND MONITORING PROGRAM............................................................................... 3-1 3.1.1 Building 30 Remediation System Monitoring and Results .................. 3-1 3.1.2 Building 30 Remediation System Contaminant Removal Rate............ 3-2 3.1.3 Building 30 Indoor Air Monitoring and Results ................................... 3-2 3.1.4 Building 30 Groundwater Monitoring and Results ............................... 3-4 3.2 RESULTS OF BUILDING 70/71 SAMPLING AND MONITORINGPROGRAM............................................................................... 3-5 3.2.1 Building 70/71 Remediation System Monitoring and Results ............. 3-5 3.2.2 Building 70/71 Soil Vapor Extraction System Monitoring andResults............................................................................................ 3-6 GAPROJECTS\11621039\0&M_and Monitoring\O&M_Reports\Apri106-Dec08Report\Report0909.docx 8 October 2009 !r 11 Lf Phase V Inspection and Monitoring Report Buildings 30, SI and 70/71 Remediation Systems TABLE OF CONTENTS (Continued) Section Page , , 3.2.3 Building 70/71 Groundwater Monitoring and Results, Performance of In Situ Chemical Oxidation Program ............................................... 3-6 3.2.4 Building 70/71 Indoor Air Monitoring and Results ............................ 3-10 3.3 RESULTS OF BUILDING 51 SAMPLING AND MONITORING PROGRAM............................................................................. 3-11 4. SUMMARY AND CONCLUSIONS............................................................................ 4-1 4.1 BUILDING 30 REMEDIATION SYSTEM........................................................ 4-1 4.2 BUILDING 70/71 REMEDIATION SYSTEM ................................................... 4-1 4.3 BUILDING 51 REMEDIATION SYSTEM........................................................ 4-2 5. RECOMMENDATIONS...............................................................................................5-1 APPENDIX A MASSACHUSETTS DEPARTMENT OF ENVIRONMENTAL PROTECTION BUREAU OF WASTE SITE CLEANUP 108 TRANSMITTAL FORMS APPENDIX B GROUNDWATER TREATMENT SYSTEM EFFLUENT MONITORING REPORTS APPENDIX C LABORATORY DATA FOR INDOOR AIR SAMPLES APPENDIX D LABORATORY DATA FOR GROUNDWATER SAMPLES APPENDIX E LABORATORY DATA FOR REMEDIATION SYSTEM INFLUENT AND EFFLUENT SAMPLES GAPROJECTS\11621039\0&M_and_Monitoring\O&M_Reports\ApriIO6-DecO8Report\ReportO909.docx 8 October 2009 iii n u Phase V Inspection and Monitoring Report �--� Buildings 30, SI and 70/71 Remediation Systems, L! Title Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 LIST OF FIGURES Site Plan Building 70/71 In Situ Chemical Oxidation Influent VOC Concentration, Cumulative Mass Removed, Building 30 Soil Vapor Extraction System Indoor Air Sampling Locations, Buildings 30, 70, and 71 TCE Concentrations in Groundwater - Building 70/71 Plume Perimeter WE Concentrations in Groundwater - Building 70/71 Mid -Plume Area WE Concentrations in Groundwater - Building 70/71 Source Area Figure 8 TCE Concentrations in Groundwater - Building 70/71 Deep Overburden/Shallow Bedrock Figure 9 111 -TCA Concentrations in Groundwater - Building 70/71 Area GIPROJECTS\11621039\0&M_and_Monitoring\O&M_ReportsWpri106-DecOBReport\Report0909.docx 8 October 2009 iv Phase V Inspection and Monitoring Report } Buildings 30, SI and 70/71 Remediation Systems LIST OF TABLES Title Table 1 Indoor Ambient Air Sampling Results Table 2 Historical Groundwater Analytical Results for VOCs Table 3 Vapor Flow Rates and Monitoring Data - Building 30 Remediation System Table 4 Vapor Flow Rates and Monitoring Data - Building 70/71 Remediation System Table 5 Results of Groundwater Treatment System Monitoring - Building 51 Remediation System GAPROJECTS\11621039\0&M_and_Monitoring\O&M_Reports\Apri106-Dec08Report\Report0909.docx 8 October 2009 V n i n u C Phase V Inspection and Monitoring Report ,' Buildings 30, 51 and 70/71 Remediation Systems LIST OF ACRONYMS Alcatel -Lucent Alcatel -Lucent USA, Inc. AS air sparging bgs below ground surface CDM Camp Dresser & McKee Inc. cfm cubic feet per minute cis-1,2-DCE cis-1,2-dichloroethene COC Chain -of -Custody EPA United States Environmental Protection Agency ft feet ft square feet/foot gpm gallons per minute lbs pounds lbs/day pounds per day IM inspection and monitoring ISCO in situ chemical oxidation LSP Licensed Site Professional Lucent Lucent Technologies, Inc. MassDEP Massachusetts Department of Environmental Protection MCP Massachusetts Contingency Plan MFR Modified Fenton's Reagent mg/L milligrams per liter MVW Merrimack Valley Works NPDES National Pollutant Discharge Elimination System OM&M operations, maintenance, and monitoring OSHA Occupational Safety and Health Administration PID photoionization detector Roux Roux Associates, Inc. RTN Release Tracking Number SVE soil vapor extraction TCE trichloroethene 1,1,1 -TCA 1,1,1 -trichloroethane UCLs Upper Concentration Limit GAPROJECTS\1162103910&M and_Monitoring\O&M_ReportsWpri106-Dec08Report\Report0909.docx 8 October 2009 n vi Phase V Inspection and Monitoring Report Buildings 30, SI and 70/71 Remediation Systems LIST OF ACRONYMS (continued) Ng/m3 micrograms per cubic meter pg/L micrograms per liter USTs underground storage tank VOCs volatile organic compounds WESTON" Weston Solutions, Inc. GAPROJECTS\11621039\0SM_and Monitoring\08M ReportsWpri106-Dec08Report\Report0909.docx 8 October 2009 Vii SECTION 1 INTRODUCTION n r LJ n Li n i v n u Phase V Inspection and Monitoring Report Buildings 30,51 and 70/71 Remediation S),stems 1. INTRODUCTION Weston Solutions, Inc. (WESTON®) has prepared this Phase V Inspection and Monitoring (IM) Report on behalf of Alcatel -Lucent USA, Inc. (Alcatel -Lucent) for remediation activities associated with Release Tracking Number (RTN) 3-0174 at the Merrimack Valley Works (MVW) in North Andover, Massachusetts. The MVW is located at 1600 Osgood Street in North Andover and was formerly owned by Lucent Technologies, Inc. Alcatel SA merged with Lucent Technologies, Inc. (Lucent) in 2006 to form Alcatel -Lucent, and Alcatel -Lucent retains the environmental liability for the MVW property. The current owner of the MVW is 1600 Osgood Street, LLC, a wholly-owned subsidiary of Ozzy Properties, Inc. The MVW is a confirmed Disposal Site regulated under the Massachusetts Contingency Plan (MCP), where investigation and remediation activities have been ongoing since 1986 under RTN 3-0174 for volatile organic compounds (VOCs) in soil and groundwater. Two other RTNs (3-21863 and 3-23204) are also active for areas of the MVW property not covered by RTN 3-0174. WESTON assumed responsibility for remediation of the MVW property in September 2003. Prior to WESTON's involvement, Roux Associates, Inc. (Roux) and Camp Dresser & McKee Inc. (CDM) performed IM of the remediation activities, with Roux serving as the Licensed Site Professional (LSP) -of -Record for the site, and CDM as the remediation systems designer. This document was prepared in accordance with the requirements of 310 Code of Massachusetts Regulation 40.0890 of the MCP. Copies of the Massachusetts Department of Environmental Protection (MassDEP) Bureau of Waste Site Cleanup Forms 108, 108A, and 108B containing the name, license number, signature, and seal of the LSP -of -Record are included as Appendix A. 1.1 DISPOSAL SITE DESCRIPTION The Disposal Site (or site) is a portion of a 1,900,000 square -foot manufacturing facility located on 168 acres of land in North Andover, Massachusetts, just south of Interstate 495. The 168 -acre property includes approximately 115 acres that, until recently, were actively used for manufacturing, 32 acres that are landscaped, and 21 acres that are undeveloped woodlands, GAPROJECTS\11621039\08M_and_Monitoring\08M_ReportsWpri106-Dec08Report\Report0909.docx 8 October 2009 1-1 Phase V Inspection and Monitoring Report Buildines 30, 51 and 70/71 Remediation Sv: II`k10•ll110109P, wetlands, and flood plain. There are currently more than 55 buildings/structures located on the property. A Site Plan is provided on Figure 1. Hazardous chemicals, predominantly chlorinated solvents such as trichloroethene (TCE) and ` \ tetrachloroethene, were historically stored and used in large quantities at the Disposal Site. As a result of historic releases at the facility, several plumes of dissolved VOCs are present in groundwater beneath the site. Three separate remediation systems have been in operation at the r•, Disposal Site to address VOCs in groundwater, soil, and indoor air. These systems are briefly described in Subsection 1.2. r, 1.2 REMEDIATION SYSTEMS DESCRIPTION There are three remediation systems at the site that are operated in order to treat contaminated soils and groundwater associated with RTN 3-0174. These remediation systems are: ■ The Building 30 Former Machine Shop area remediation system consists of soil vapor extraction (SVE) and air sparging (AS) processes for treatment of contaminated soils , and groundwater in the vicinity of the former machine shop sump in Building 30. In February 2004, WESTON commenced in situ chemical oxidation ` (ISCO) in the area of the Building 30 system in lieu of AS in order to accelerate destruction of groundwater contaminants and shorten the time until attainment of the remediation objectives. Following a period of pulsed operation of the SVE system ` and subsequent attainment of the soil and groundwater cleanup objectives for the r Building 30 Former Machine Shop area, operation of the Building 30 remediation system was discontinued in August 2007. ■ The Building 70/71 system consists of SVE and groundwater extraction and treatment processes for treatment of contaminated soil and groundwater in the Building 70/71 _ area. In situ chemical oxidation has been conducted in this area since December 2003 to accelerate remediation. Operation of the groundwater extraction wells was discontinued in December 2003 following commencement of ISCO in order to ` prevent removal of the ISCO reagent (sodium permanganate) from the subsurface. The SVE components of this system have remained in continuous operation with the exception of minor short-term shutdowns for repairs and maintenance. ■ The Building 51 system consists of groundwater extraction and treatment processes for treatment of contaminated groundwater downgradient of the Building 70/71 source area. Following commencement of the source area ISCO treatment at r Building 70/71, operation of the Building 51 system was scaled back to prevent the extraction wells from drawing impacted groundwater away from the source treatment area. Groundwater cleanup goals have been attained within the capture zone of the r G:\PROJECTS\11621039\0&M_and_Monitoring\0&M_ReportsWpri106-Dec08ReportlReport0909.docx 8 October 2009 1-2 i__i Phase V Inspection and Monitoring Report r) Buildings 30, 51 and 70/71 Remediation Systems E INTRODUCTION U Building 51 treatment system, and operation of the Building 51 system is no longer n necessary to protect downgradient receptors. i' Ld In addition to operations, maintenance, and monitoring (OM&M) of the three remediation Li systems listed above, groundwater and indoor air quality monitoring are conducted throughout F) the MVW property in order to evaluate the overall progress of remediation. Also, as noted above, ► an ISCO program is ongoing in the contaminant source areas in order to provide more aggressive r remediation of the contaminated groundwater and soil. Descriptions of the remediation systems are provided below. The OM&M activities conducted during the reporting period are detailed in Section 2 of this report, and the results of the monitoring are provided in Section 3. A summary of the OM&M results and conclusions concerning contaminant conditions are provided in F1 Section 4, and recommendations for future OM&M activities under RTN 3-0174 are provided in Li Section 5. 1.2.1 Building 30 Former Machine Shop Area 1 ' The Building 30 remediation system commenced operation in July 2002. The objective of this LJ system was to remediate the limited soil and groundwater contamination associated with historical releases of chlorinated solvents via a floor drain in the Former Machine Shop area. The contamination appears to be limited to the shallow sand aquifer and the unsaturated zone. The impacted area is estimated to be approximately 6,000 square feet (ft), and is located beneath the southeast corner of Building 30. Concentrations of chlorinated solvents in groundwater in the vicinity of the floor drain have been detected at a maximum of 140 milligrams per liter (mg/L). L Prior to startup of the Building 30 remediation system, indoor air sampling indicated that p contaminated soil vapors had migrated into the building through cracks and around foundation U penetrations. Subsequent sealing of the cracks and penetrations significantly reduced indoor air -1 concentrations. Protection of indoor air quality has been further enhanced by operation of the U Building 30 remediation (SVE) system and the ISCO program. r Li The Building 30 remediation system consists of a series of SVE and AS wells designed to r remove residual vadose zone contamination and to volatilize VOCs dissolved in groundwater �-' and capture the resulting vapors. The Building 30 remediation system consists of SVE at two r1 wells (MW -43 and MW -44) and two subslab ventilation wells (VEW-2 and VEW-3), and AS U j ', GAPROJECTV 1621039\0&M_and_Monitoring\O&M_Reports\ApriIO6-DecO8Report\ReportO909.docx 8 October 2009 1 1-3 r •, Phase V Inspection and Monitoring Report I Buildings 30, SI and 70/71 Remediation Systems INTRODUCTION capabilities at two locations (MW -43 and MW -44) for in situ stripping of VOCs from r ' groundwater. The intent of the subslab ventilation wells is to apply a constant negative pressure 1 _l beneath the building slab, and thereby capture any VOCs present and prevent them from migrating into the indoor air of Building 30. Extracted vapors are treated using activated carbon adsorption, and the treated air stream is discharged to the atmosphere. r The SVE portion of the Building 30 remediation system operated continuously with the exception of minor maintenance and ISCO injection shutdowns, from startup in July 2002 until January 2005. The AS portion of the Building 30 remediation system was shut down in February 2003 and has not been reactivated, as is further discussed in Section 2. After groundwater and indoor air concentrations had declined to the cleanup objectives in January 2005, the SVE system was operated in pulsed mode until August 2007. The SVE system was fully shut down in August 2007 after monitoring continued to show attainment of the 1� cleanup objectives. Monitoring of the Building 30 area since shutdown of the SVE system has continued to show compliance with the cleanup objectives. The Building 30 remediation system remains in place and can be restarted if contaminant concentrations rebound and indicate that additional treatment is necessary. Permanganate injection was also performed in the Building 30 area. The objective of this ISCO effort was to destroy groundwater contaminants, and thereby reduce the potential for these compounds to volatilize into the soil gas and migrate into the Building 30 indoor air. The AS wells in MW -43 and MW -44 were used as the delivery points for the permanganate. 1.2.2 Building 70/71 The Building 70/71 remediation system commenced operation in October 2002 and consists of a '. series of groundwater extraction wells, a limited SVE system, and associated groundwater and r air treatment equipment. This system was installed to capture a large VOC plume in shallow J groundwater that is related to former underground storage tanks (USTs) for solvents in this area. The USTs and the VOC-impacted soils were removed in 1986. Significant concentrations (as high as 2,200 mg/L) of VOCs have been detected in the uppermost groundwater zone in a GAPROJECTS\11621039\06M—and Monitoring\OSM ReportslApri106-Dec06Report\Report0909.docx 6 October 2009 1-4 P, I__ Phase V Inspection and Monitoring Report Buildings 30, Sl and 70/71 Remediation Systems INTRODUCTION roughly 40,000-ft2 area, extending from the outside loading dock area to beneath Buildings 70 and 71. ' Groundwater can be extracted from nine previously -existing groundwater monitoring wells within the source area: MW -14, MW -24, MW -27, MW -30, MW -33, MW -34, MW -42, MW -45, and MW -48. Well MW -34D was installed in June 2005 and connected to the Building 70/71 v remediation system in February 2006. Monitoring well MW -45 is operated as a dual phase SVE Uand groundwater extraction well, because exceedances of groundwater and soil Upper Concentration Limits (UCLs) have been detected in the vicinity of this well. Monitoring wells are not typically designed for continuous withdrawal of groundwater, and as such, they generally have inefficient screens and sand packs, resulting in low yields and poor capture of contaminant I plumes. This is the case with the Building 70/71 system, where the yields of the individual extraction wells are typically less than 0.5 gallons per minute (gpm). Because of the limited nyields of the current extraction wells, it is unlikely that complete capture of the plume had been achieved by this system when the wells were in operation. V The Building 70/71 system treats the extracted groundwater using a phase separator and a rtray -type air stripper, and the treated effluent is discharged to the Merrimack River via the MVW storm drain system. Discharge from this system is covered by the National Pollutant Discharge Elimination System (NPDES) Remediation General Permit for Massachusetts. The air stripper exhaust is treated using a regenerative carbon adsorption system prior to discharge to the atmosphere. The limited SVE system consists of a single vacuum extraction point (MW -45) and two shallow, subslab trenches (Trench -1 and Trench -2). The trenches are operated to capture r VOC vapors originating in the groundwater and soil beneath Buildings 70 and 71 before vapors L_j enter the buildings. The extracted vapors are treated in the carbon adsorption system along with the air stripper exhaust, and discharged to the atmosphere. The vapor -phase carbon is periodically regenerated using an on-site regeneration system. Aqueous phase condensate from r the regeneration process is recycled through the groundwater treatment system. Dense u non -aqueous phase condensate, if any is present, is accumulated in an on-site storage tank. V` Given the high concentrations of TCE in the core of the plume, and the minimal impact of the n groundwater extraction wells on the contaminant plume, it was determined that additional 4 u PGAPROJECTS\1162103910&M_and_Monitoring\O&M_Reports\April06-Dec08Report\Report0909.d= 8 October 2009 LJ' 1-5 Phase V Inspection and Monitoring Report Buildings 30,51 and 10/11 Remediation Sy: INTRODUCTION remediation efforts were necessary to attain the cleanup objectives for the site. Therefore, WESTON commenced an ISCO program in October 2003 in order to accelerate cleanup of the 11 Building 70/71 area. A total of 175 injection wells have been installed for the ISCO program in the Building 70/71 area since October 2003. The area designated for treatment included the full extent of the plume r that exceeded 10 mg/L of TCE. A 20% sodium permanganate solution was injected into selected injection wells during seven separate events as detailed in Subsection 2.2.4. Permanganate and r VOC monitoring were conducted between injection events to evaluate the effectiveness and L r � determine the timing and scope of future injections. 1.2.3 Building 51 The groundwater extraction and treatment system at Building 51 was installed in 1990 to intercept groundwater impacted with VOCs (predominately TCE) migrating northward from the Building 70/71 area towards production wells PW -1, PW -2, and PW -3. These production wells provided up to 750 gpm of process water for use in the former Lucent manufacturing operations at the MVW. Use of the three production wells was discontinued in approximately 2000, and they have subsequently been properly abandoned. Production wells PW -2 and PW -3 were screened in coarse sand and gravel deposits located just ` above bedrock, and reportedly produced as much as 450 gpm. These deposits are believed to be hydraulically connected to a deep overburden channel that passes through the site beneath Buildings 30 and 70. The high pumping rates of these wells appears to have accelerated downgradient migration of groundwater contaminants in the Buildings 30 and 70/71 source ,: areas. The Building 51 extraction system uses two groundwater extraction wells (EW -2 and EW -3) that are screened within the buried channel deposits to intercept the VOC plume upgradient of PW -2 and PW -3. Production well PW -1 was located in the vicinity of PW -2 and PW -3 but was screened in a shallow sand deposit that is only minimally hydraulically connected to the buried channel. Groundwater can be pumped from EW -2 and EW -3 at a combined rate of between 60 and 70 gpm and is treated via a packed -column air stripper located in Building 51. The treated r \ GAPROJECTS\1 1621039\0&M_andMonitoring\O&M_Reports%pri106-Dec08Report\Report0909.docx 8 October 2009 1-6 r7 'u Phase V Inspection and Monitoring Report Buildings 30, 51 and 70/71 Remediation Systems f INTRODUCTION N n effluent is discharged to the MVW storm drain system, which discharges to the Merrimack River under the NPDES Remediation General Permit for Massachusetts. The air stripper exhaust is n treated using vapor -phase activated carbon adsorption prior to discharge to the atmosphere. u Because of the hydraulic connection to the Building 70/71 contaminant source area, extraction of n groundwater at Building 51 has been scaled back during the ISCO source control remedial action in order to minimize withdrawal of groundwater from the source treatment area. Groundwater n cleanup goals (GW -2 and GW -3) have been attained within the capture zone of the Building 51 Li remediation system, and operation of the Building 51 system is no longer necessary to protect downgradient receptors. A separate submittal will be provided to MassDEP to document u' shutdown of the Building 51 remediation system. R Li n Lj ri G \PROJECTS\11621039\0&M_and Monitoring\O&M_Reports\ApdIO6-Dec08Report\Report0909.docx 8 October 2009 LJ 1-7 s r� r ti 1 SECTION 2 INSPECTION, REMEDIATION, AND MONITORING n f v n U n u r Li F, ii n Phase V Inspection and Monitoring Report '�M Buildings 30, 51 and 70/71 Remediation Systems 2. INSPECTION, REMEDIATION, AND MONITORING The inspection, remediation, and monitoring activities performed for the Building 30 and 70/71 systems are discussed in the following subsections. 2.1 BUILDING 30 REMEDIATION SYSTEM Periodic IM of the Building 30 SVE/AS system, including the collection of vapor samples for field screening, was conducted to assess the performance of the remediation system. In addition, indoor air and groundwater samples were collected from the vicinity of the Building 30 remediation system in order evaluate progress towards attainment of the remedial objectives. The monitoring program is discussed below. 2.1.1 Type and Frequency of Building 30 Inspection and Monitoring System operating parameters were monitored, and adjustments to the operating conditions were made as necessary to maintain proper operation of the Building 30 remediation system. Periodic monitoring of VOC concentrations in the vapor stream at the influent, midpoint, and effluent of the carbon adsorption units were conducted to evaluate contaminant removal efficiency. Periodic monitoring of the VOC concentrations in each of the five vapor extraction wells (VEW-1, VEW-2, VEW-3, MW -43, and MW -44) was also conducted using a photoionization detector (PID). The results of these measurements are summarized and discussed in Section 3. Indoor air samples were collected at established locations in Building 30 on the dates listed in Table 1, which includes all of the indoor air samples collected in the Buildings 30 and 70 areas since commencement of the indoor air monitoring program in 2001. Groundwater samples were collected from monitor wells in and adjacent to the Building 30 remediation system on the dates listed in Table 2, which includes all of the groundwater data collected at the site since 1986. The results of the indoor air and groundwater monitoring events are presented and discussed in Section 3. ^ GAPROJECTS\11821039\06M_AND_MONITORING10dM_REPORTSWPRIL06-DECOOREPORT\REPORT0909.DOCX 8OCTOBER 2009 2-1 l� Phase V Inspection and Monitoring Report Buildings 30, 51 and 70/71 Remediation Systems INSPECTION, REMEDIATION, AND MONITORING 2.1.2 Description of Significant Modifications to the Building 30 Inspection and/or Monitoring Program Modifications to the IM Program for the Building 30 remediation systems during the reporting period are discussed in Subsection 2.1.2.1. 2.1.2.1 Shutdown of Building 30 Soil Vapor Extraction System The indoor air quality data for the Building 30 area indicate very low concentrations of ' contaminants related to soil and groundwater contamination since the Building 30 remediation system commenced operation in July 2002, and the ISCO program commenced in January 2004. ` To evaluate the extent to which remediation of the Building 30 area has been completed, the ` remediation system was turned off for 2 weeks prior to the February and April 2006 indoor air ` quality monitoring events. The results from these monitoring events, as shown in Table I for sample locations IX -95, F4, and G4, showed no material change in the concentrations of indoor r air contaminants. It was therefore concluded that it was safe to convert the treatment system to pulsed operation, with cycles of 2 weeks on followed by 2 weeks off. The pulsed operation program was continued, with the "off' periods extended to 4 weeks until August 2007. Indoor air data collected throughout the pulsed operation period continued to show no impacts from the system being on or off, and therefore the system was shut down in August 2007. Monitoring of F indoor air has continued after shutdown of the Building 30 system in August 2007, and the system remains in place. If monitoring results indicate exceedances of the cleanup objectives for the site, then the Building 30 remediation system will be restarted. 2.1.3 Conditions Affecting Performance of Building 30 Remediation System and Corrective Actions As reported above in Subsection 2.1.2.1, the SVE portion of the system was converted to pulsed ` operation in February 2006 and shut down in August 2007, based on the results of indoor air J quality monitoring. As reported in previous IM Reports for this RTN, The AS portion of the remediation system has not been operated since system 12 February 2003. The AS system has not been operated because AS causes mounding of the water table in the SVE wells, which reduces vapor extraction rates and results in excessive groundwater extraction at SVE wells G:IPROJECTS\116210391O&M AND_MONITORINGO&M REPORTSWPRILO&DECOBREPORT\REPORT0808.DOCX B OCTOBER 2008 2-2 , �s Phase V Inspection and Monitoring Report Buildings 30, 51 and 70/71 Remediation Systems INSPECTION, REMEDIATION, AND MONITORING MW -43 and MW -44. The Building 30 remediation system will be restarted if contaminant Ld concentrations rebound, thereby indicating that additional treatment is necessary. 2.1.4 Building 30 In Situ Chemical Oxidation Remediation n Permanganate injection was also performed in the Building 30 area in lieu of continued operation `i of the AS system. The objective of this ISCO effort was to destroy groundwater contaminants, and thereby reduce the potential for these compounds to volatilize into the soil gas and migrate �-s into the Building 30 indoor air. The AS wells in MW -43 and MW -44 were used as the delivery points for the permanganate. A total of 300 gallons of 20% permanganate solution were injected to each of the two sparge wells during January 2004. An additional 300 gallons of 20% sodium n permanganate were injected into MW -44 during June 2006 in order to address a rebound of the '-' TCE concentration that occurred in MW -44 during the second quarter of 2006. Performance n monitoring results for the Building 30 ISCO program are presented in Section 3. 2.2 BUILDING 70/71 REMEDIATION SYSTEM n Inspection and monitoring of the Building 70/71 remediation system was conducted to evaluate n the performance of the system and evaluate the effectiveness of the groundwater and vapor phase `-' treatment with regard to the remediation system goals. As noted in Subsection 1.2, operation of n the groundwater extraction wells was discontinued in December 2003 following commencement of the ISCO program. Indoor air and groundwater samples were collected during this reporting n period to evaluate the progress of the remediation activities. The results of these monitoring i`. events are discussed in Section 3. r L -J 2.2.1 Type and Frequency of Building 70/71 Inspection and Monitoring System operating parameters were monitored periodically, and adjustments to the operating conditions were made as necessary to maintain effective performance of the Building 70/71 n Li remediation system. Remediation system monitoring was conducted to evaluate the VOC mass n removal rate from the vadose and saturated zones, and to confirm attainment of discharge limits. Calculation of the VOC mass removal rate and cumulative mass removed provides a means of assessing the progress of remediation by comparing the total mass removed over similar time f? LJ GAPROJECTS\11821039\03M_AND_MONITORING\08M_REPORTS\APRIL08-DEC08REPORTIREPORT0909.DOCX 8 OCTOBER 2009 2-3 LJ Phase V Inspection and Monitoring Report , Buildings 30, 51 and 70/71 Remediation Systems , INSPECTION, REMEDIATION, AND MONITORING periods. In addition, monitoring of the groundwater remediation equipment and the carbon adsorption system is necessary to ensure attainment of the applicable discharge criteria. When the groundwater treatment system is operating, influent and effluent water samples are collected monthly to monitor the performance of the treatment process. Samples are submitted for VOC , _ J analysis as required by the NPDES Remediation General Permit for Massachusetts, which covers operation of this system. As noted above, the groundwater extraction wells were turned off in December 2003 at the start of the ISCO program, and thus, the only water generated by the treatment system since that date has been from the following sources: ■ Pumping of Well MW -34D for approximately 3 weeks in February and March 2006. r ■ Liquids extracted by the SVE system. , ■ Condensate from regeneration of the carbon system. The monitoring reports for the months that the Building 70/71 groundwater treatment system - was operated are provided in Appendix B. Indoor air samples were collected at established locations in Building 70/71 on the dates listed in Table 1, which includes all of the indoor air samples collected in the Buildings 30 and 70 areas since commencement of the indoor air monitoring program in 2001. Groundwater samples were collected from monitor wells in and adjacent to the Building 70/71 remediation system on the dates listed in Table 2, which includes all of the groundwater data collected at the site since 1986. The results of the indoor air and groundwater monitoring events are presented and discussed in Section 3. 2.2.2 Description of Significant Modifications to the Building 70/71 Inspection and/or Monitoring Program - There were no modifications to the Building 70/71 remediation system during the reporting peperiod.,> G:\PROJECTS\11821039\06M_AND_MONITORING\O&M_REPORTS\APRIL06-DEC08REPORT\REPORT0808.000X 8 OCTOBER 2008 2-4 r7 I li n L n r Si n u M Ll n I`? I, l _.1 n 6 Phase V Inspection and Monitoring Report '�M. Buildings 30, 51 and 70/71 Remediation Systems INSPECTION, REMEDIATION, AND MONITORING 2.2.3 Conditions Affecting Performance of Building 70171 Remediation System and Corrective Actions The sub -slab ventilation/SVE system in Building 70/71 remains in operation to minimize the potential for subsurface contaminants to impact indoor air in Buildings 70 and 71. Because of the ongoing ISCO program in the Building 70/71 area, the groundwater extraction wells for the Building 70/71 system have not been operated since December 2003 with the exception of MW -34D, which was operated during February and March 2006. The ISCO injection well field was expanded into the deep overburden near MW -34D area during 2008, and now the groundwater in the vicinity of MW -34D is laden with permanganate. Therefore MW -34D is not operated in order to prevent extraction of the oxidant from the subsurface. 2.2.4 Building 70171 In Situ Chemical Oxidation During October and November 2003, a total of 138 shallow overburden injection wells were installed, in the locations shown on Figure 2, for the ISCO program in the Building 70/71 area. The area designated for treatment included the full extent of the plume that exceeded 10 mg/L of TCE. Approximately 300 gallons of 20% sodium permanganate were injected into each of the injection wells during December 2003 and January 2004. Following the initial treatment effort, concentrations of TCE in many source area monitor wells continued to exceed the cleanup objective during quarterly monitoring events in April and July 2004. Two additional rounds of sodium permanganate injections were conducted in May and October 2004 in selected injection points within the source area. During each supplemental ISCO injection event, 100 to 300 gallons of 20% sodium permanganate were injected into the source area injection points. Following the completion of each permanganate injection event, selected injection and monitor wells were sampled periodically for the presence of permanganate. Grab samples were collected using a bailer and inspected visually for evidence of permanganate (purple color). The ISCO program in the Building 70/71 area was expanded to include the deep overburden and shallow bedrock zone during the second and third quarters of 2005. The reason for this G: PROJECTS\116210 9\O&M_AND_MONITORINGlOBM_REPORTS\APRILOB-DECOBREPORT\REPORT0909.DOC% B OCTOBER 2009 2-5 •�J Phase V Inspection and Monitoring Report Buildings 30, Sl and 70/71 Remediation Systems r INSPECTION, REMEDIATION, AND MONITORING expansion was elevated WE concentrations that had been observed in MW -15D since March 2004. The initial ISCO program provided treatment of the shallow overburden, to a depth , of approximately 35 feet (ft) below ground surface (bgs). The elevated WE concentrations in , MW -151), which is screened at the overburden/bedrock interface approximately 70 ft bgs, , indicated that the deep overburden and shallow bedrock also required treatment. Therefore, 5 monitor wells and 20 injection wells were installed in the deep overburden during June and . September 2005. In October 2005, sodium permanganate, the ISCO reagent, was injected into each of the deep overburden injection wells. Additional ISCO injection wells were installed in the deep overburden in 2006 and 2008, and additional oxidant injections were conducted to treat . the remaining areas of deep overburden groundwater that exceeded the cleanup objectives. Additional detail concerning the ISCO program in the deep overburden and shallow bedrock of - the Building 70/71 area is provided in Section 3. Performance monitoring results for the --- Building 70/71 ISCO program are presented in Section 3. 2.3 BUILDING 51 REMEDIATION SYSTEM r Inspection and monitoring of the Building 51 remediation system were conducted to evaluate the ' performance of the system, estimate contaminant mass removal from groundwater, and confirm attainment of NPDES discharge limits. The results of these monitoring events are discussed in Section 3. 2.3.1 Type and Frequency of Building 51 Inspection and Monitoring , , System operating parameters were monitored weekly, and adjustments to the operating conditions were made as necessary to maintain proper operation of the Building 51 remediation system. Effluent water samples are collected monthly when the system is in operation to monitor performance of the treatment process. Samples are submitted for analysis as required by the NPDES Remediation General Permit for Massachusetts. The vapor phase carbon adsorption r � system is monitored approximately weekly using a PID, and the carbon is changed out as necessary based on sampling results. �f . J G:\PROJECTS\11821039\OSM AND_MONITORING106M REPORTSVAPRILO&DECOBREPORr,REPORTO909.DOCX 8 OCTOBER 2009 2-6 r r Phase V Inspection and Monitoring Report �- Buildings 30, 51 and 70/71 Remediation Systems INSPECTION, REMEDIATION, AND MONITORING U 2.3.2 Description of Significant Modifications to the Building 51 Inspection and/or Monitoring Program The Building 51 groundwater extraction and treatment system was shut down on 26 June 2008 because: n 1. The groundwater production wells that were formerly downgradient from the `J Building 51 system have been abandoned. The objective of the Building 51 system n was to protect the downgradient production wells. Since the downgradient production wells are no longer in existence, continued operation of the Building 51 system is not F1 I necessary. 2. The contaminant concentrations in the vicinity of the extraction wells (EW -2 and EW -3) are below Method 1 GW -3 standards and do not present a risk to downgradient receptors. 3. There is some risk that the groundwater extraction by the Building 51 system could draw groundwater contaminants downgradient from the Building 70/71 source area. Groundwater contaminant concentrations throughout the site will continue to be monitored until the cleanup goals in the contaminant source area and all other areas of the site are attained, and a Response Action Outcome is submitted in accordance with MCP requirements. If there is a rebound of contaminant concentrations downgradient of the Building 51 extraction wells, then the Building 51 groundwater extraction and treatment system will be returned to operation. G:PROJECTS\11821039\03M_AND_MONITORING\08M_REPORTSVAPRILOB-DEC08REPORTU2EPORT0909.DOCX 8 OCTOBER 2009 t1 2-7 �7 SECTION 3 RESULTS OF INSPECTION AND MONITORING PROGRAM C_ 1 n. U Phase V Inspection and Monitoring Report Buildings 30, 51 and 70/71 Remediation Systems 1W 3. RESULTS OF INSPECTION AND MONITORING PROGRAM 3.1 RESULTS OF BUILDING 30 INSPECTION AND MONITORING PROGRAM Periodic IM events are conducted at the site to monitor the progress of remediation and optimize the performance of the remediation system and ISCO program. The results of the IM Program are discussed in Subsections 3. 1.1 through 3.1.3. 3.1.1 Building 30 Remediation System Monitoring and Results I ' While the SVE system was in operation, parameters recorded on a bimonthly basis included U� pressures (positive and negative) in the SVE piping and at the SVE well heads, soil vapor flow rates, heat exchanger influent and effluent temperatures, carbon system pressure drop data, and liquid level observed in the air/water separator. Negative pressures at the SVE wells ranged from 1.0 to 11.5 inches of mercury. Vapor flows from MW -43 and MW -44 averaged approximately 18 and 10 cubic feet per minute (cfm), respectively. Vapor flows from the sub -slab shallow wells (VEW-1, VEW-2, and VEW-3) averaged less than 40 cfm per well. The average total flow rate for the SVE system during the reporting period was 183 cfm. A PID is used to monitor VOC concentrations in the vapor stream at the inlet to the carbon system, between the two carbon vessels, and the carbon system effluent. The results of these i measurements are summarized in Table 3. These PID monitoring results indicate a continued n downward trend in contaminant concentrations in the SVE system influent. Following the most V' recent (June 2006) oxidant (sodium permanganate) injection in the Building 30 area, there has rr been a steady decline in contaminant concentrations. In MW -44, the most contaminated well in the Building 30 area, the TCE concentration has declined from a maximum concentration of 71,000 micrograms per liter (pg/L) on 9 May 2006 to 73 pg/L on 17 July 2008. At MW -43, the v TCE concentrations have remained less than 60 pg/L with the exception of a 460 pg/L detection n on 25 October 2007. The most recent (17 July 2008) results for MW -43 show 55 µg/L TCE. Future monitoring will be conducted to determine if the elevated TCE concentration detected in MW -43 on 25 October 2007 was an isolated occurrence or part of a longer-term trend that may 4J require additional groundwater treatment. n GAPROJECTS\11621039\06M_AND_MONITORING\06M_REPORTSWPRIL06-DECO6REPORT\REPORT0909.DOCX 6 OCTOBER 2009 n 3-1 I, Li Phase V Inspection and Monitoring Report Buildings 30, 51 and 70/71 Remediation Systems RESULTS OF INSPECTION AND MONITORING PROGRAM 4 1 Downgradient from the Building 30 Former Machine Shop treatment area, the TCE concentrations in wells MW -54S and MW -54D have remained less than 30 and 80 µg/L, respectively. Overall, groundwater concentrations contaminant concentrations in the Building 30 , area are approaching, or are below, levels that are likely to impact indoor air quality in Building 30. The results of the indoor air monitoring in the Building 30 Former Machine Shop , area are reported in Subsection 3.1.3. 3.1.2 Building 30 Remediation System Contaminant Removal Rate The estimated VOC removal rate for the Building 30 remediation system since startup in 2002 1 has been calculated using PID monitoring supplemented by TO -15 analyses. As noted in Subsection 2.1.2.1, the Building 30 remediation system was shut down in August 2007. Therefore, there has been no active removal of contaminants from the subsurface since that time. As shown in Table 3, the VOC removal rate ranged between 8.1 and 0.1 pounds per day ' (lbs/day) during operation of the Building 30 SVE system. The significant fluctuation in these ' removal rates is the result of higher subsurface concentrations during initial startup of the system and during pulsed operation that commenced in January 2006. The removal rates were higher immediately after the system was restarted following the periods when the system was off. ' During pulsed operation, the removal rate dropped very quickly to less than 0.5 lbs/day within 48 hours after the system was restarted. As shown in Figure 3, the contaminant removal rate decreased significantly since startup of the Building 30 remediation system in July 2002. This ' J type of decline is typical of SVE systems, as the total mass of contaminant in the vadose zone is reduced. Based on the very low (0.1 lb/day) contaminant removal rate, combined with very low indoor air concentrations of site contaminants when the system was off, it was decided to shut ' the system down in August 2007. The Building 30 remediation system will remain off unless groundwater or indoor air concentrations rebound, thereby indicating that additional operation of ` the Building 30 remediation systems is necessary. 3.1.3 Building 30 Indoor Air Monitoring and Results Indoor air samples have been collected from the area in and adjacent to the former machine shop in Building 30 on the dates shown in Table 1. The indoor air sampling locations are shown on r . J r•. G:\PROJECTS\11621039\06M AND_MONITORING\08M_REPORTSWPRIL06•DECOBREPORT\REPORTO909.DOCX 6 OCTOBER 2009 3-2 , n, n I' LJ Phase V Inspection and Monitoring Report lcm Buildings 30, 51 and 70/71 Remediation Systems RESULTS OF INSPECTION AND MONITORING PROGRAM Figure 4. Indoor air samples were collected using evacuated Summa canisters over an 8 -hour period, in accordance with MassDEP indoor air sampling guidance. The Summa canisters were placed in the breathing space at locations that coincide with the following column coordinates in Building 30: F4, and G4. The indoor air samples were couriered to Test America Laboratories under standard Chain -of -Custody (COC) procedures and analyzed for VOCs using United States Environmental Protection Agency (EPA) Method TO -15. As reported in the previous IM Reports for this RTN, locations 1 X-105 and 1 X-95 were removed from the indoor air monitoring program in October 2004, because the VOC concentrations at these locations have historically been very low, and these locations are not in an area of suspected contamination. The indoor air sample results for this reporting period, as well as historical sampling results, are summarized in Table 1. Copies of the laboratory analytical data packages for indoor air samples are provided in Appendix C. The significant decrease in concentrations of VOCs in the indoor air samples that occurred following startup of the Building 30 remediation system in July 2002 has been maintained even after shutdown of the Building 30 SVE system in August 2007. Concentrations of TCE have been less than 10 micrograms per cubic meter (µg/m3) at sample locations F4 and G4 since 2002 with the exception of one elevated detection (21 µg/m3) of TCE at location G4 in April 2008. The concentration of TCE during July 2008 was G4 was 3.5 µg/m3. Indoor air quality monitoring will continue to be monitored in the Building 30 area to determine if the 21 µg/m3 detected during April 2008 was an isolated event or part of a longer-term or seasonal trend. If necessary, the Building 30 SVE system will be restarted to provide further treatment to the subsurface and minimize the potential for any remaining subsurface contaminants to migrate to indoor air. It should be noted that this portion of Building 30 is currently vacant so the indoor air pathway is incomplete. In any event, preliminary risk calculations based on TCE in indoor air suggest that a concentration of approximately 70 µg/m3 represents the threshold at which TCE in indoor air becomes a risk to workers under an industrial/commercial scenario. G:\PROJECTS\11621039\O&M_AND MONITORING\O&M_REPORTS\APRIl06-DECOBREPORT\REPORT0909.DOCX 8 OCTOBER 2009 3-3 Lj Phase V Inspection and Monitoring Report Buildings 30, 51 and 70/71 Remediation Systems RESULTS OF INSPECTION AND MONITORING PROGRAM t'. 'J Of the VOCs detected in indoor air in the Building 30 Former Machine Shop area, TCE, acetone, cis-1,2-dichloroethene, (cis-1,2-DCE), dichlorodifluoromethane (Freon 12), and toluene have been detected in the influent vapor to the Building 30 remediation system or in the groundwater in the vicinity of the Building 30 remediation system. The remaining compounds (chloromethane, cyclohexane, heptane, isopropyl alcohol, and trichlorofluoromethane [Freon 11 ]) detected in indoor air are likely in the building environment as a result of the historical or ongoing manufacturing, cleaning, packaging, etc. activities in the Building 30 area, t and are not believed to be soil or groundwater contaminants that have entered the building via , soil gas. I As noted above, indoor air quality in Building 30 has improved significantly since startup of the r' Building 30 remediation system in July 2002. During the 5.5 years of operation, the Building 30 remediation system removed greater than 4,500 pounds (lbs) of VOCs from the subsurface. In addition to removal of contaminants via SVE, injection of permanganate into the MW -43 and MW -44 areas in January 2004 and June 2006 likely destroyed additional contamination, as indicated by a drop in VOC concentrations in ATT -1, MW -43, and MW -44. The rebound in contaminant concentrations at MW -44 during 2006 was addressed by an additional ISCO injection event during June 2006. 3.1.4 Building 30 Groundwater Monitoring and Results ,� r The results of groundwater monitoring in the Building 30 area show significant reductions in contaminant concentrations, especially following the ISCO injection events conducted in January 2004 and June 2006. Groundwater samples were collected from monitoring wells , MW -43 and MW -44 in accordance with EPA Region 1 low -flow sampling guidelines. Using a peristaltic pump with dedicated Teflon -lined tubing, a sample was collected directly into a pre -preserved sample container, couriered to Test America Laboratories under COC procedures , and analyzed for VOCs by EPA Method 8260B. Table 2 summarizes the groundwater analytical data for the current and previous reporting periods. Table 2 also includes the MCP Method 1 ,v GW -2 standards for comparison to the groundwater concentrations. The GW -2 standards were selected for comparison, because the Building 30 monitoring wells are located within 30 ft of an f r G:,PROJECTS\11821039\08M AND MONITORING\O8M_REPORTS\APRILO6-DECOBREPORT\REPORT0909.DOCX 8 OCTOBER 2009 3-4 r ly til Phase V Inspection and Monitoring Report Buildings 30, SI and 70/71 Remediation Systems El RESULTS OF INSPECTION AND MONITORING PROGRAM existing building and the depth to groundwater is less than 15 ft. Copies of laboratory data j packages for the groundwater samples are included as Appendix D. ! 6 The groundwater monitoring results indicate continued downward trends in contaminant concentrations in MW -43, which had a TCE concentration of 16,000 µg/L prior to startup of the Building 30 remediation system in 2002. The TCE concentration in MW -43 has been less than U 100 µg/L since November 2006 with the exception of a detection of 460 µg/L in October 2007. n R The July 2008 sampling event detected 55 µg/L of TCE in MW -43. Well MW -43 will continue LJ to be monitored at least annually to further verify the long-term contaminant concentration trend. V In MW -44, the TCE concentration did increase from 20,000 µg/L in November 2005 to 71,000 µg/L in May 2006. Rebound of the TCE concentration occurred approximately 14 months after sodium permanganate had dissipated in MW -44, and indicated that additional �7 L1 permanganate treatment of the MW -44 area was needed. Therefore, a second permanganate injection was conducted in the MW -44 area during June 2006. Since the June 2006 permanganate injection event, the concentration of TCE in MW -44 has dropped significantly. The most recent sample collected from MW -44, in July 2008, showed a TCE concentration of I 73 pg/L. 3.2 RESULTS OF BUILDING 70/71 SAMPLING AND MONITORING PROGRAM Inspection and monitoring of the Building 70/71 remediation system was conducted to evaluate LJ system performance, estimate contaminant mass removal rates, and verify compliance with effluent discharge limits. The results of the monitoring program for the reporting period, as well as historical monitoring results, are presented in the following subsections. 3.2.1 Building 70/71 Remediation System Monitoring and Results V The Building 70/71 remediation system has been operated in SVE mode, with vapors extracted Li from the two sub -slab ventilation trenches and from MW -45, since commencement of the ISCO n injection program in December 2003. The vapors extracted via SVE at Building 70/71 are I processed through the activated carbon adsorption system prior to discharge to the atmosphere. I v G:\PROJECTS111621079\O&M_AND_MONITORING\O&M_REPORTSIAPRIL06-DEC08REPORTREPORT0909.DOCX 8 OCTOBER 2009 n 3-5 L Phase V Inspection and Monitoring Report , Buildings 30,51 and 70/71 Remediation Systems ti RESULTS OF INSPECTION AND MONITORING PROGRAM C - J With the exception of operation of MW -34D during February and March 2006, the groundwater extraction wells at Building 70/71 have not been operated since commencement of the ISCO 4 J program in December 2003 in order to prevent removal of the ISCO reagent [sodium permanganate and/or Modified Fenton's Reagent (MFR)] from the subsurface. A small volume , of water extracted by the SVE system and condensate from the carbon regeneration system is , generated during operation of the SVE system. Since June 2006, water was been processed , through the treatment system approximately 1 day per month during the months of August, r September, October, November 2006, and March, May, September, and October 2007. During , the remainder of the months, an insufficient amount of water was generated to require treatment. r 3.2.2 Building 70/71 Soil Vapor Extraction System Monitoring and Results The Building 70/71 SVE system has been operated continuously, except for brief maintenance shutdowns, since startup in 2002. Vapor flow rates and PID measurements are recorded r periodically for the SVE system. A summary of the PID measurements is provided in Table 4. The SVE system is typically operated at approximately 1,080 cfm. The system is essentially a subslab ventilation system and is not treating the source of contamination. Therefore, the influent contaminant concentrations are generally quite low and are often not detectable. However, to ' minimize the potential for indoor air quality impacts, the SVE system remains in operation during the ongoing ISCO program that is being conducted to treat the contaminant source area. 3.2.3 Building 70/71 Groundwater Monitoring and Results, Performance of r In Situ Chemical Oxidation Program An ISCO program has been conducted in the Building 70/71 area since December 2003 in order f . to accelerate cleanup of the site. The ISCO program has included the following major activities: r ■ Installation of 138 shallow overburden injection wells in October and November 2003. The locations of these wells are shown on Figure 2. ■ Injection of approximately 320,000 lbs of 20% sodium permanganate into the injection wells during December 2003 and January 2004. ■ Installation of 5 deep overburden/shallow bedrock monitor wells in June 2005. ■ Installation of 20 deep overburden injection wells in September 2005. r G:PROJECTS\11621039\0&M_AND_MONITORING\06M_REPORTSWPRILOB-DEC08REPORT\REPORT0909.DOCX 8 OCTOBER 2009 3-6 F) LJ U n M LJ n LJ I Phase V Inspection and Monitoring Report '�M' Buildings 30, 51 and 70/71 Remediation Systems RESULTS OF INSPECTION AND MONITORING PROGRAM ■ Installation of 6 deep overburden monitor/injection wells in May 2006. ■ Installation of 11 deep overburden monitor/injection wells in June 2008. ■ Injection, during May and October 2004, October 2005, October 2006, and November 2008 of a combined 173,600 lbs of 20% sodium permanganate in areas of the shallow overburden where contaminants rebounded following the initial injections. ■ Injection, during October 2005, August 2006, and August 2008 of approximately n95,700 lbs of 20% sodium permanganate in the deep overburden to address contamination in that area. `n Injection, during September 2006, October 2006, May 2007, and October 2007 t -f of approximately 57,500 lbs of MFR into wells in the 2.500-ft2 area of Buildings 70 and 71 where groundwater is contaminated by 111 -trichloroethane (111 -TCA). The MFR was used in this area because permanganate will not oxidize 111 -TCA. The results of groundwater monitoring, including performance monitoring of the ISCO program in the Building 70/71 area, are detailed in Subsections 3.2.3.1 through 3.2.3.3. 3.2.3.1 Sampling and Analysis of Groundwater in the Building 70/71 Area Monitor wells are sampled in accordance with EPA Region 1 low -flow guidance. Prior to w sampling activities, water levels are measured in the well using an electronic water level n indicator. All wells are sampled using either a peristaltic or submersible pump with dedicated Teflon -lined tubing directly into pre -preserved sample containers. The samples are couriered to Test America Laboratories under COC procedures and analyzed for VOCs by EPA Method 8260B. The groundwater analytical results for the Building 70/71 area are summarized in Table 2. Comparisons of the results to the UCLs and appropriate Method 1 groundwater standards for the site are also included in Table 2. Groundwater analytical results for wells within 30 ft of an existing building are compared to GW -2 standards and groundwater analytical results for all other wells within the Disposal Site are compared to GW -3 standards. Copies of laboratory data packages for the groundwater samples are provided as Appendix D. n U GAPROJECTS\11821039\O&M_AND_MONITORING\OBM_REPORTSWPRILWDEC08REPORT\REPORT0909.DOCX 8 OCTOBER 2009 n 3-7 LJ Phase V Inspection and Monitoring Report .� y Buildings 30, 51 and 70/71 Remediation Systems , RESULTS OF INSPECTION AND MONITORING PROGRAM 4 J Chlorinated VOCs were detected in many of the wells sampled in the vicinity of Buildings 70 and 71, with TCE, cis-1,2-DCE, 1,1,1 -trichloroethane, 1,1-dichloroethane, 1,1-dichloroethene, 4 and vinyl chloride the most predominant contaminants detected. 3.2.3.2 Groundwater Monitoring Results in Building 70/71 Area - Shallow k J Overburden - As shown on Figure 5, the TCE concentrations in the shallow overburden monitor wells on the perimeter of the Building 70/71 plume (MW -20, MW -28, MW -37, MW -38, MW -39, MW -40, and MW -48) have decreased to below the UCL. These wells are, for the most part, just outside of 1 i the ISCO treatment area. There has been some rebound in the TCE concentration in MW -28, , J MW -39, and MW -40 that is being monitored to determine if an addition oxidant injection event in portions of the perimeter area is necessary. There has been a very significant decrease in the TCE concentrations in the central area of the f 1 shallow overburden plume (Figure 6 — MW -19, MW -22, MW -24, MW -25, MW -26, MW -27, MW -31, MW -33, and MW -34) following commencement of the ISCO program. There has been some rebound in MW -27 and MW -33 that has been addressed by additional oxidant injections. At other wells, such as MW -24, MW -25, and MW -34,. the TCE concentration has shown little or no rebound 5 years after the oxidant injection event in the vicinity of those wells. This is a strong indication that much of the TCE contaminated soil and groundwater has been effectively treated by the ISCO program. The TCE concentrations in the source area of the Building 70/71 plume (Figure 7 — MW -14, �- MW-21, MW -23, MW -30, MW -42, and MW -45) have also decreased significantly since commencement of the ISCO program, and are now less than 20,000 µg/L TCE in all six ' J source area monitor wells. The shallow overburden source area was treated very aggressively with sodium permanganate, and some permanganate continues to persist in portions of the Building 70/71 contaminant source area 5 years after commencement of the ISCO program. This ` long-term persistence of permanganate has likely provided very effective treatment of chlorinated ethenes present in soil and groundwater. Therefore, it is unlikely that TCE G:PROJECTS\11621039\08M_AND_MONITORINGIO&M_REPORTSV,PRILO6-DEC08REPORT\REPORT0909.DOCX 8 OCTOBER 2009 3-8 a L� Phase V Inspection and Monitoring Report Buildings 30, 51 and 70/71 Remediation Systems ®. j RESULTS OF INSPECTION AND MONITORING PROGRAM U concentrations will rebound to levels greater than the cleanup objectives following the eventual �n dissipation of the remaining permanganate. n 3.2.3.3 Groundwater Monitoring Results in Building 70/71 Area - Deep Li Overburden/Shallow Bedrock F, The locations of the deep overburden and shallow bedrock monitor and injection wells in the LJ Building 70/71 source area are shown on Figure 2. The groundwater analytical data are summarized in Table 2. Figure 7 is a graph of the WE concentration versus time in several key deep overburden/shallow bedrock monitor wells in the Building 70/71 source area. As shown on n L Figure 8, there was a significant drop the TCE concentration in MW -15D following injection of ? oxidant into the deep overburden in October 2005. Prior to the oxidant injection, the concentration of TCE in MW -15D was 110,000 µg/L. Three weeks after the injection event, the WE concentration had decreased to 2,700 µg/L. The TCE concentration in MW -15D rebounded Li in May 2006 following dissipation of the permanganate and another permanganate injection event for the deep overburden in the vicinity of MW -15D was conducted in August 2006. Additional injection of permanganate in the MW -15D area was conducted in October 2008, and r --n the concentration of TCE in MW -15D declined to less than 5,000 µg/L in December 2008, as indicated by the purple color of the water in MW -15D at that time. The formation in the vicinity r� of the MW -15D well screen is relatively permeable in comparison to other wells in the Building 70/71 area. This appears to be causing more rapid dissipation of the injected permanganate, and more rapid rebound of the WE concentration following dissipation of the '—' permanganate. Therefore, it is expected that additional permanganate injections will be needed in t`\ the MW -15D area in order to reduce the TCE concentration in the deep overburden in the vicinity of MW -15D to less than the UCL. LJ The WE concentration in MW -34D decreases significantly when that well is pumped, and then n rebounds during non -pumping conditions. To address the contamination in the vicinity of lu MW -34D, additional injection deep overburden injection wells were installed near that well during the third quarter of 2008, and permanganate was injected into the new injection wells 4, during October 2008. Also, permanganate has been injected into MW -34D approximately 1 day n per month since October 2008 in order to provide additional treatment of the MW -34D area. E U GAPROJECTS\11621039\03M AND MONITORING\O&M_REPORTSWPRIL06-DEC08REPORT\REPORT0909.DOCX 8 OCTOBER 2009 n 3-9 Indoor air samples have been collected in Buildings 70 and 71 on the dates shown in Table 1. «J The indoor air sampling locations are shown on Figure 4. Indoor air samples were collected using evacuated Summa canisters over an 8 -hour period, in accordance with MassDEP indoor air r� sampling guidance. The Summa canisters were placed in the breathing space at each sample location. The SVE components of the Building 70/71 remediation system, including sub -slab vapor extraction trenches in Buildings 70 and 71, and the heating, ventilation, and air conditioning systems for Buildings 70 and 71 were operating normally during the sampling events. The indoor ' air samples were couriered to Test America Laboratories under COC procedures and analyzed ` for VOCs using EPA Method TO -15. The indoor air sample results for this reporting period, as well as historical sampling results for , these locations, are summarized in Table 1. Copies of laboratory data packages for the indoor air r GAPROJECTS\11021039103M_AND_MONITORING\O&M_REPORTSWPRIL06DECOBREPORT\REPORT0909.DOCX B OCTOBER 2009 3-10 r . Phase V Inspection and Monitoring Report Buildings 30, 51 and 70/71 Remediation Systems RESULTS OF INSPECTION AND MONITORING PROGRAM 3.2.3.4 Groundwater Monitoring Results in Building 70/71 Area — 1,1,1-Trichloroethane As shown on Figure 2, there is an approximately 1,500 ft2 area of 111-TCA contamination in �J groundwater below Buildings 70 and 71 that exceeds the UCL for this compound. Because 111-TCA is not oxidized by permanganate, it has persisted in the groundwater during the ISCO t , program. Fenton's Reagent, an alternative oxidant that does destroy 111-TCA, has been injected into the subsurface in the 111-TCA area during September and October 2006 and May and r October 2007. Monitoring results to date, as shown on Figure 9, show a significant reduction • - (from 135,000 µg/L to 49,000 µgfl in the 111-TCA concentration at MW-31, but no long-term r reduction of the 111-TCA concentration at MW-33. A disadvantage of Fenton's Reagent is that it does not persist in the subsurface for more than a few weeks. Therefore, the oxidant dissipates t before it can move through the formation and contact all of the contaminated soil and ' groundwater that requires treatment. In order to complete treatment of the 111-TCA area, alternative oxidant injection methods are currently being evaluated for implementation during second or third quarter of 2009. 3.2.4 Building 70171 Indoor Air Monitoring and Results Indoor air samples have been collected in Buildings 70 and 71 on the dates shown in Table 1. «J The indoor air sampling locations are shown on Figure 4. Indoor air samples were collected using evacuated Summa canisters over an 8 -hour period, in accordance with MassDEP indoor air r� sampling guidance. The Summa canisters were placed in the breathing space at each sample location. The SVE components of the Building 70/71 remediation system, including sub -slab vapor extraction trenches in Buildings 70 and 71, and the heating, ventilation, and air conditioning systems for Buildings 70 and 71 were operating normally during the sampling events. The indoor ' air samples were couriered to Test America Laboratories under COC procedures and analyzed ` for VOCs using EPA Method TO -15. The indoor air sample results for this reporting period, as well as historical sampling results for , these locations, are summarized in Table 1. Copies of laboratory data packages for the indoor air r GAPROJECTS\11021039103M_AND_MONITORING\O&M_REPORTSWPRIL06DECOBREPORT\REPORT0909.DOCX B OCTOBER 2009 3-10 F,; u i' LA M' n f`1 L -i n u Phase V Inspection and Monitoring Report Buildings 30, 51 and 70/71 Remediadon Systems RESULTS OF INSPECTION AND MONITORING PROGRAM samples are provided in Appendix C. The analytes detected in indoor air during the reporting period were present at very low concentrations, well below the Occupational Safety and Health Administration (OSHA) requirements for workplace exposure. Since startup of the subslab ventilation system in 2002, trichloroethene, the primary site contaminant at the site has been detected in indoor air in Buildings 70 and 71 at a maximum concentration of 42 µg/m3 (15 July 2004). After 15 July 2004, the WE concentration in Building 70/71 indoor air has been less then 10 µg/m3 with the exception of one detection of 12 µg/m3 on 22 August 2006. Preliminary risk calculations based on WE in indoor air suggest that a concentration of approximately 70 gg/m3 represents the threshold at which TCE in indoor air becomes a risk to workers under an industrial/commercial scenario. As all TCE concentrations measured within Building 70/71 are significantly below this value, there is no current risk to human health. Trans-1,2-dichloroethene was detected in Buildings 70 and 71 at two locations at concentrations ranging from 7.9 to 11 µg/m3. Other VOCs that have been detected in the Building 70/71 air samples include acetone, cis-1,2-dichloroethene, chloromethane, dichlorodifluoromethane (Freon 12), isopropyl alcohol, m,p-xylene, 2-butanone, methylene chloride, toluene, and trichlorofluoromethane (Freon 11). Several of these analytes (Freon 11, Freon 12, isopropyl alcohol, methylene chloride) are not groundwater or soil contaminants at the site, and their presence in indoor air is likely the result of previous or ongoing use of these VOCs in the operations, manufacturing, cleaning, and/or packaging activities in Buildings 70 and 71. 3.3 RESULTS OF BUILDING 51 SAMPLING AND MONITORING PROGRAM The results of the influent and effluent monitoring of the Building 51 remediation system are provided in Table 5. The Building 51 remediation system was constructed in 1990 to prevent groundwater contaminants at the site from impacting the production wells that were being used to provide process water for the manufacturing operations at the MVW. These production wells have not been in operation since approximately 2000, and the final remaining production well (PW -1) was properly abandoned by the property owner in 2008. Because the groundwater contaminant concentrations are well below the Method 1 GW -3 standards in the vicinity, and downgradient of the Building 51 extraction wells, and because of the ongoing upgradient ISCO program at Building 70/71 that is treating the contaminant source, operation of the Building 51 G APROJECTS\11821039\O&K _AND_MONITORING\O&M_REPORTSUPRILOB-DEC08REPOR"RREPORT0909.DOCX 8 OCTOBER 2009 3-11 Phase V Inspection and Monitoring Report Buildings 30, 51 and 70/71 Remediation S},stems W=M RESULTS OF INSPECTION AND MONITORING PROGRAM groundwater treatment system is no longer necessary. A supplemental Phase IV Remedy Implementation Plan will be submitted to MassDEP to document the rationale for shutdown of the Building 51 system. G: W ROJECTS111621039106M_AND_MONITORINGIOBM_REPORTSIAPRIL06-DECOBREPORTIREPORT0909.DOCX 3-12 r� B OCTOBER 2009 r •. L i l a SECTION 4 SUMMARY AND CONCLUSIONS w ►j P U n, Es F, LJ n n .L� Phase V Inspection and Monitoring Report Buildings 30, 51 and 70/71 Remediation Sy: 4. SUMMARY AND CONCLUSIONS This section summarizes the results of the IM activities performed for RTN 3-0174 through 31 December 2008. 4.1 BUILDING 30 REMEDIATION SYSTEM The SVE portion of the Building 30 remediation was operated continuously from startup in 2002 until it was converted to pulsed -mode operation in January 2006. The SVE system was subsequently completely shut down in August 2007, because the results of indoor air and groundwater monitoring indicated that operation of the Building 30 system was no longer necessary to protect indoor air quality. The Building 30 remediation system will remain off unless indoor air or groundwater monitoring data indicate that future operation is necessary to protect indoor air quality. As shown in Table 2, groundwater contaminant concentrations in the vicinity of the Building 30 remediation system have decreased significantly since the startup of the treatment process in July 2002. This reduction in contaminant concentrations is likely a result of volatilization of groundwater contaminants into vadose zone soil gas, and subsequent extraction by the SVE system. The ISCO injections in the Building 30 area in January 2004 and June 2006 also likely destroyed some contaminants in situ. An overall evaluation of the Building 30 area indicates that significant progress has been made in cleanup of the site. The Building 30 remediation system will be restarted, and additional ISCO injections will be conducted, if ongoing indoor air and groundwater quality monitoring indicate that these actions are necessary. 4.2 BUILDING 70/71 REMEDIATION SYSTEM Groundwater quality data show significant reductions in contaminant concentrations throughout most of the contaminant source area. The WE concentrations in the monitor wells throughout the shallow overburden plume have now decreased to below the UCL. Sodium permanganate, the ISCO reagent, continues to persist throughout some of the source area, 5 years after commencement of the ISCO program. This long-term presence of permanganate should continue G:1PROJECTM11821039\06M_AND_MONITORING1O&M_REPORTSWPRIL08-DEC08REPORT\REPORT0909.00CX 8 OCTOBER 2009 4-1 Phase V Inspection and Monitoring Repoli ' Buildings 30, 51 and 70/71 Remediation Systems to oxidize chlorinated ethenes in groundwater and minimize the potential for rebound of , contaminant concentrations once the permanganate eventually dissipates. There were some exceedances of the UCL remaining in the source area of the deep overburden plume as of September 2008. An ISCO injection event was conducted to treat these exceedances ` r; in October 2008, and monthly injections into MW -34D are ongoing. Groundwater monitoring events are scheduled for April 2009 to evaluate the success of the ongoing ISCO program and determine if any additional treatment of the deep overburden is necessary. rm There is a 1,500-ft2 area in the vicinity of MW -30, MW -31, and MW -33 that is contaminated with 111 -TCA, which is not oxidized by permanganate. This area was treated using Fenton's reagent during September and October 2006, and during May and October 2007. The 111 -TCA continues to persist in this area and it appears that further injections of oxidant ` will be necessary to reduce contaminant concentrations to below the UCL. A modified ISCO program for the 111 -TCA area will be implemented during the fourth quarter of 2009. ` The indoor air sampling data for the Building 70 area show the presence of some groundwater , and soil contaminants at low concentrations in indoor air at concentrations below OSHA and r risk-based concentrations. The Building 70/71 SVE/sub-slab ventilation system will remain in , f operation until indoor air monitoring data indicate that it is no longer necessary. Indoor air , testing will be conducted during 2009 with the Building 70 SVE/subslab system off in order to evaluate whether continued active operation of the Building 70 system is necessary. 4.3 BUILDING 51 REMEDIATION SYSTEM All groundwater downgradient from the Building 51 extraction wells meets the appropriate (GW -2 and/or GW -3) MCP Method 1 standards. This indicates that operation of the Building 51 c system is no longer necessary. In addition, the ongoing source control remedial action upgradient of the Building 51 extraction wells that consists of an aggressive ISCO program will further r reduce groundwater contaminant concentrations in downgradient areas of the site. As noted in Subsection 3.3, a separate submittal will be provided to MassDEP to document shutdown of the t Building 51 remediation system. G:\PROJECTS\11621039\08M_AND_MONITORING\OdM_REPORTSIAPRIL06-DECOBREPORT\REPORT0909.DOC% 8 OCTOBER 2009 ' 4-2 SECTION 5 RECOMMENDATIONS Ll. n L-,. f-1 Phase V Inspection and Monitoring Report Buildings 30, 51 and 70/71 Remediation Systems 5. RECOMMENDATIONS -' Er '5O LUT IOKS Operation of the Building 30, 70/71, and 51 remediation systems will continue to be operated, maintained, and monitored in accordance with the OM&M Plan, although adjustments and modifications will likely be made as each system is evaluated by WESTON, and as the ISCO program is implemented to accelerate remediation of contaminated groundwater at the site. Specific recommendations are as follows: ■ The Building 30 remediation system will remain off unless groundwater and/or indoor air monitoring results indicate that the system should be restarted to protect indoor air quality and/or further reduce soil and groundwater contaminant concentrations. ■ Indoor air monitoring will be conducted in Building 70 (which is currently unoccupied) with the Building 70 treatment system off in order to evaluate the need for continued operation of the Building 70 system. ■ If indoor air quality data indicate that the Building 70 system can be converted to pulsed mode or shut down, then indoor air testing will also be conducted in Building 71 (which is occupied 5 days per week during regular work hours) during pulsed operations to further evaluate the need for continued operation of the Building 70/71 remediation system. ■ Additional ISCO injections will be conducted in the 111 -TCA area in Building 70/71 to reduce the Ill -TCA concentrations in soil and groundwater. Alternative ISCO technologies will be evaluated improve treatment of this area. u ■ A justification to shut down the Building 51 remediation system will be submitted to MassDEP based on attainment of groundwater cleanup goals in the area impacted by u the Building 51 system. Groundwater quality monitoring will continue to be conducted in and downgradient of the Building 30 and 70/71 contaminant source areas. Additional ISCO injections and/or operation of the Building 30 and 70/71 remediation systems will be conducted ?� if groundwater data indicate a rebound in contaminant concentrations that exceed the cleanup objectives for the site. f ? Indoor air quality will continue to be monitored in Buildings 30, 70, and 71 to assist t with determining if the Building 30 system should be restarted, and if the Building 70/71 SVE systems can be partially or completely shut down. G:IPROJECTS111621039\08._AND_MONITORING108._REPORTSVIPRIL06-DECOIIREPORTV2EPORT0909.DOCX 8 OCTOBER 2009 5-1 LI. 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P P P1 P n C P P, 0 0 0 o G o o O o 0 0 0 0 0 r o0 o e o o P o r ae a — N n N r Q ao n auanloj, uejnjoapSgealay — — auaylaojolgaejlaL a r v c p Q < c N v r Q r v r a a Y v auajf4s oo 0 ao 0 00 0 00 0 0 m 0 o0 0 00 o 0o c m o o0 0 00 0 00 0 - 0 - 0 - 0 - 0 - 0 - 0 - 0 m 0 r ao 0 n c0 r 07 r 00 r 00 r 00 r 00 r 00 r 00 r 00 r 00 r 0o r m r oo r ae r ao r 00 r 00 r 00 aua ,( -o X z z 0 z 0 z 0 z 0 z 0 z 0 z 0 z 0 z 0 z 0 z 0 0 0 0 0 0 0 0 aualeylydeN z z z z z z z z Lapuolq:) aualkglaW r n n r p oe r r r a oe r r r r n r r L – e aa4131�1n8-lial lAglaW �? w o0 00 00 0o ao 00 00 00 00 00 00 00. o0 00 00 00 00 U— — — — — — — — — — — — —— — — — aaolaX lAingosl l(ylayg fV N N N z N fJ N N 0 N o N — Q 0 N 0 N 0 fJ 0 fV o N N N fJ auolay 1Ag13 Iig1aW a t; " o p I r N Q N Z auola)l I,(InB IgglaW q o 0 0 ¢ 0 0 0 0 N N lV N ,Z N N N N N N ? N N fV N fV aual6X -d'm O N N N N r O r m N N ae Jn n N N N > > > > > > > 7 loyoale lSdoadosl N N v N N fl N N n N ^ h N N N N ao s N Z¢ a zw)) aueYaH m o0 . 0o p ao 00 0 o n H o0 – 00 – 00 0o – m – ao – 00 – 00 – aueldaH o r m p fJ N ° o oNo 7 :D J > > > > 7 7 auazua8 1Ag13 ao 0 N W oro 0 ¢ J W are 0 N W oro 0 N W oro ¢0 o V aro 0 0 J LLJ a 0 0 N W m ¢0 0 N W aro 0 0 fl W oro .0 0 N W a 0 0 N W ao .0 o N W m 0¢¢ G J fil m 0 ¢ J lfi] a 0 ¢ N W m ¢0 ¢ N W 0 ¢ N W oro 0 ¢ fl W aro o ¢ N W oro c ¢ N W als!t MOl)I e• V e W ar a` Z "' a it Y r Z Z 'r 'r 'zr Y• Y i Y Y Y Y� Z "r 'r r Y Y ,n Q ? ? ¢ r ¢ r r n n r W 1� W 1 f j j a r 8 g r g N Q g N g g g 8 g Q g g 8 8 8 e V N a N N N N N W NN W W N W N ¢W¢ N QW N W N QW N W N W C!1 ¢ 0 0 o O o 0 o O o 0 0 0 o O O � r r d• -* c a a v -a e K e •r a Q K Q .J r i U n L-_: r U `1 M r Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- I ication Concentration ( g/L) O O _ R d X O $ aJ o F d d C O d q Z r d 0 0 u u o a a+ E o `o o `o C � A d O u Ca MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20,000 309000 20,000 NL 50,000 109000 NL 10,000 50,000 AT&T -1 1/8/1993 ND ND ND ND NR ND ND NR NR ND AT&T -1 1/27/1993 ND ND ND ND NR ND ND NR NR ND AT&T-] 3/15/1993 ND I ND ND ND NR ND ND NR NR ND AT&T-] 12/1/1996 ND ND ND ND NR ND ND NR NR ND AT&T-] 6/24/1997 ND ND ND ND NR ND ND NR NR ND AT&T -1 9/25/1997 ND ND ND ND NR ND ND NR NR ND AT&T-] 12/10/1997 ND ND ND ND NR ND ND NR NR ND AT&T-] 3/25/1998 ND ND ND ND NR ND ND NR NR ND AT&T -1 6/30/1998 ND ND ND ND NR ND ND NR NR ND AT&T-] 9/25/1998 GW -2 ND ND ND ND NR ND ND NR NR ND AT&T-] 12/15/1998 ND ND ND ND NR ND ND NR NR ND AT&T-] 12/14/1999 ND ND ND ND NR ND ND NR NR ND AT&T-] 9/12/2000 ND ND ND ND NR ND ND NR NR ND AT&T -1 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U NR IOU 2.0 U NR 2.0 U 2.0 U AT&T -1 10/13/2003 IOU IOU IOU IOU 500 U 500 U IOU 20 U IOU_ IOU AT&T -1 7/15/2004 5.0 U 5.0 U 5.0 U 5.0 U 250 U 250 U 5.0 U IOU 5.0 U 5.0 U AT&T -1 4/21/2005 1.0 U 1.0 U 1.0 U 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U AT&T-] 11/2/2005 1.0 U 1.0 U 1.0 U 1.0 U 50 U * 50 U * 1.0 U 2.0 U 1.0 U 1.0 U AT&T -1 10/25/2007 1.0 U 1.0 U 1.0 U 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U AT&T -1 7/17/2008 1.0 U 1.0 U * 1.0 U 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U AT&T -1 7/17/2008 1.0 U 1.0 U * 1.0 U 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U rWPROJECTSMU1038\0W ,d MllkllmgMM_R,pmbT-Tabk,N.NS%Tabb2.d 1 o 88 ` Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration (µ /L) e a> a jj � A u d a d � U c 05 0 _ 9z o o d is 3 a H F F F 9 MCP UCL 100,000 100,000 1009000 100,000 100,000 80,000 1009000 50,000 NL 100,000 MCP GW -2 99000 50,000 50,000 10,000 50 89000 90 30 NL 2 MCP GW -3 500 50,000 50,000 50,000 30,000 4,000 509000 5,000 NL 50,000 AT&T-] 1/8/1993 GW -2 ND ND NR ND ND ND ND 1,700 NR ND AT&T-] 1/27/1993 ND ND NR ND ND ND ND 18,000 NR ND AT&T-] 3/15/1993 ND ND NR ND ND ND ND 8,800 NR ND AT&T -1 12/1/1996 ND ND NR ND ND ND ND 26,000 NR ND AT&T-] 6/24/1997 ND ND NR ND ND ND ND 5,100 NR ND AT&T -1 9/25/1997 ND ND NR ND ND ND ND 4,400 NR ND AT&T-] 12/10/1997 ND 35 NR ND ND ND ND 2,400 NR ND AT&T-] 3/25/1998 ND ND NR ND ND ND ND 760 NR ND AT&T-] 6/30/1998 ND ND NR ND ND ND ND 12,000 NR ND AT&T-] 9/25/1998 ND ND NR ND ND ND ND 7,500 NR ND AT&T-] 12/15/1998 ND ND NR ND ND ND ND 8,800 NR ND AT&T-] 12/14/1999 ND ND NR ND ND ND ND 1,500 NR ND AT&T-] 9/12/2000 ND ND NR ND ND ND ND 4,600 NR ND AT&T-] 2/20/2003 2.0 U IOU 2.0 U 5.0 U 2.0 U 2.0 U 2.0 U 420 2.0 U 2.0 U AT&T-] 10/13/2003 IOU 100 U 10 U 20 U IOU IOU IOU 84 20 U 20 U AT&T-] 7/15/2004 5.0 U 50 U 5.0 U IOU 5.0 U 5.0 U 5.0 U 430 5.0 U 5.0 U AT&T -1 4/21/2005 1.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 19 1.0 U 1.0 U AT&T -1 11/2/2005 2.0 U IOU- 0.58 J 2.0 U 1.0 U 1.0 U 1.0 U 22 1.0 U 1.0 U AT&T -1 10/25/2007 2.0 U IOU 1.0 U 2.0 U 1.0 U IOU 1.0 U 43 1.0 U 0.50 U AT&T-] 7/17/2008 2.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 16 1.0 U 0.50 U AT&T -1 7/17/2008 2.0 U --IOU LOU 2.0 U 1.0 U 1.0 U 1.0 U 19 1.0 U 0.50 U G-WECT9\11921039109M Intl_Monkomp10&M_R,pm M,UT,W,W,N U bT 2.& 2 of 88 lam` n U 1' U Lj 1r1 I u Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( g/L) d i O v d a+ u d 0 0 o a = E R F u o a o o - A G? G O °u °r 9 .2 V u .: ., U U 05 r u O �? u MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 1009000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20,000 30 000 20,000 NL 50,000 10,000 NL 10,000 50,000 AT&T -2 1/8/1993 GW -2 4.4 1.0 ND ND NR ND ND NR NR ND AT&T -2 3/15/1993 6.0 1.0 ND ND NR ND ND NR NR ND AT&T -2 12/1/1996 1.0 ND ND ND NR ND ND NR NR ND AT&T -2 6/24/1997 ND ND ND ND NR ND ND NR NR ND A7'&7'-2 9/25/1997 ND ND ND ND NR ND ND NR NR ND AT&T -2 12/10/1997 ND ND ND ND NR ND ND NR NR ND AT&T -2 3/25/1998 ND ND ND ND NR ND ND NR NR ND AT&T -2 6/30/1998 ND ND ND ND NR ND ND NR NR ND AT&T -2 9/25/1998 ND ND ND ND NR ND ND NR NR ND A7'&7'-2 12/15/1998 ND ND ND ND NR ND ND NR NR ND AT&T -2 12/14/1999 ND ND ND ND NR ND ND NR NR ND A7'&7'-2 3/14/2000 ND ND ND ND NR ND ND NR NR ND A7'&7'-2 9/12/2000 ND ND ND ND NR ND ND NR NR ND AT&T -2 12/15/2000 ND ND ND ND NR ND ND NR NR ND A7'&7'-2 3/14/2001 ND ND ND ND NR ND ND NR NR ND AT&T -2 12/11/2001 0.57 ND ND ND NR ND ND NR NR 2.7 A7'&T-2 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U NR IOU 2.0 U NR 2.0 U 2.0 U AT&T -2 10/13/2003 1.0 U 1.0 U 1.0 U 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U A7'&1'-2 10/25/2007 1.0 U 1.0 U 1.0 U 1.0 U 50 U 50U 1.0 U 2.0 U 1.0 U 1.0 U A7'&7'-3 1/8/1993 GW -2 6.5 2.0 ND ND NR ND ND NR NR ND AT&T -3 3/15/1993 6.9 2.1 ND ND NR ND ND NR NR ND A7'&7'-3 9/12/2000 ND ND ND ND NR ND ND NR NR ND AT&T -3 12/15/2000 ND ND ND ND NR ND ND NR NR ND AT&T -3 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U NR IOU 2.0 U NR 2.0 U 2.0 U EW -02 12/16/2004 GW -3 1 5.6 1 6.6 1 16 1 1.0 U 50 U 50U 1.0 U 2.0 U 1.0 U 24 EW -03 12/16/2004 GW -3 8.0 13 25 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 76 EW -03 11/2/2006 1.0U 1.0U 1.0U 1.0U* 50U* 50U 1.0U 2.0U 1.0U 1.0U EW -03 4/27/2007 20 U 31 36 20 U 1,000 U 1,000 U * 20 U 40 U * 20 U 280 IP -03 1 10/27/2003 GW -3 1 20,000 U 1 20,000 U 1 20,000 U 1 20,000 U 1 1,000,000 U 1 1,000,000 U 1 20,000 U 1 40,000 U 20,000 U 20,000 U IP -06 10/27/2003 GW -3 1 5,000 U 5,000 U 1 5,000 U 1 5,000 U 1 250,000 U 250,000 U 5,000 U 10,000 U 5,000 U 5,000 U IP -08 10/27/2003 GW -3 1 20 U 20 U 20 U 1 20 U 1,000 U 1,000 U 20 U 40 U 20 U 20 U 11'-09 1 10/27/2003 GW -3 1 100 U 1 100 U 1 100 U 100 U 5,000 U 5,000 U 100 U 200 U 100 U 99 J IP -1491) 3/31/2008 GW -3 IOU IOU 25 U IOU 500 U 500 U IOU 20 U ]0 U 25 U IP -1491) 3/31/2008 25 U 25 U IOU 25 U 1,200 U 1,200 U 25 U 50 U 25 U 3.2 J IP -15 10/27/2003 GW -3 1 1,000 U 1 1,000 U 1,000 U 1,000 U 50,000 U 50,000 U 1,000 U 2,000 U 1,000 U 1,000 U IP -1561 3/31/2008 1 GW -3 1 100 U 1 100 U 100 U 100 U 5,000 U 5,000 U 100 U 200 U 100 U 100 U IP -21 1 10/27/2003 GW -3 1 20 U 1 20 U 1 20U 1 20 U 1 1,000 U 1 1,000 U 1 20 U 1 40 U 1 20U 20 U ' G:WROJECT511 KI09MM_end_MonXming10 M_RepoMV-T bbs\MaN9\ bW tl 3 of 88 1 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif-a ication Concentration ( /L) u y C O L 'flC) p Y TE y a �j o u r °o W d = e A o o a a $ s'« ° .0 u E 5 F F h EC C r U '>, MCP UCL 100,000 100,000 100,000 100,000 100,000 809000 100,000 50,000 NL 100,000 MCP GW -2 99000 50,000 50,000 109000 50 8,000 90 30 NL 2 MCP GW -3 500 50,000 50,000 50,000 30 000 4 000 50,000 5,000 NL 50 000 AT&T -2 1/8/1993 GW -2 ND ND NR ND ND ND ND 1.1 NR ND AT&T -2 3/15/1993 ND ND NR ND 1.0 ND ND 1.3 NR ND AT&T -2 12/1/1996 ND ND NR ND ND ND ND 8.1 NR ND AT&T -2 6/24/1997 ND ND NR ND ND ND ND 3.3 NR ND AT&T -2 9/25/1997 ND ND NR ND ND ND ND 3.2 NR ND AT&T -2 12/10/1997 ND 35 NR ND ND ND ND 33 NR ND AT&T -2 3/25/1998 ND ND NR ND ND ND ND 260 NR ND AT&T -2 6/30/1998 ND ND NR ND ND ND ND 4.0 NR ND AT&T -2 9/25/1998 ND ND NR ND ND ND ND 1.5 NR ND AT&T -2 12/15/1998 ND ND NR ND ND ND ND 1.8 NR ND AT&T -2 12/14/1999 ND ND NR ND ND ND ND 53 NR ND AT&T -2 3/14/2000 ND ND NR ND ND ND ND 110 NR ND AT&T -2 9/12/2000 ND ND NR ND ND ND ND ND NR ND AT&T -2 12/15/2000 ND ND NR ND ND ND ND 34 NR ND AT&T -2 3/14/2001 ND ND NR ND ND ND ND 87 NR ND AT&T -2 12/11/2001 ND ND NR ND ND ND ND 4.3 NR ND AT&T -2 2/20/2003 2.0 U IOU 2.0 U 5.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U AT&T -2 10/13/2003 1.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 0.60 J 2.0 U 2.0 U AT&T -2 10/25/2007 2.0 U IOU IOU 2.0 U 1.0 U IOU 1.0 U 2.2 1.0 U 0.50 U AT&T -3 1/8/1993 GW -2 ND ND NR ND 1.2 ND ND 12 NR ND AT&T -3 3/15/1993 ND ND NR ND 1.3 ND ND 2.2 NR ND AT&T -3 9/12/2000 ND ND NR ND ND ND ND 1.4 NR ND AT&T -3 12/15/2000 ND ND NR ND ND ND ND 4.0 NR ND AT&T -3 2/20/2003 2.0 U IOU 2.0 U 5.0U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U EW -02 112/16/2004 GW -3 1.0 U IOU 1.0 U 2.0 U 1 6.5 1.0 U 1.0 U 64 1.0 U 1.0 EW -03 12/16/2004 GW -3 1.0 U IOU 1.0 U 2.0 U 1.8 1.0 U 0.58 J 230 1.0 U 1.0 U FW -03 11/2/2006 2.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U * 48 1.0 U * 1.0 U EW -03 4/27/2007 40 U 200 U * 20 U 40 U 20 U 20 U 20 U 520 20 U * 20 U IP -03 10/27/2003 GW -3 20,000 U 200,000 U 20,000 U 40,000 U 20,000 U 18,000 J 20,000 U 930,000 40,000 U 40,000 U IP -06 10/27/2003 GW -3 5,000 U 50,000 U 5,000 U 10,000 U 5,000 U 4,800 J 5,000 U 140,000 10,000 U 10,000 U IP -08 10/27/2003 GW -3 20 U 200 U 20 U 40 U 20 U 20 U 20 U 460 40 U 40 U IP -09 10/27/2003 GW -3 100 U 1,000 U 100 U 200 U 100 U 100 U 100 U 3,100 200 U 200 U IP -149D 3/31/2008 GW -3 20 U 250 U * IOU 50 U 25 qu 4.2 J 25 U 420 25 U 12 U IP -149D 3/31/2008 50 U 100 U * 25 U 20 U 10 6.3 J IOU 380 IOU 5.0 U IP -15 1 10/27/2003 GW -3 1,000 U 10,000 U 1,000 U 2,000 U 1,000 U 1,000 U 1,000 U 33,000 2,000 U 2,000 U IP -1561) 1 3/31/2008 GW -3 200 U 1,000 U * 100 U 200 U 100 U 100 U 100 U 490 100 U 50 U IP -21 10/27/2003 GW -3 20 U 200 U 20 U 40U 20U 40 20 U 580 40 U 40 U G:TRWECT6111621939%0 M and Mank.lkq%0 M Repo Z.l Tabk,W,a 9%T,b42.A, 4 of 88 Lj r u n U r t l -j n U n 1 u n i n 1 u Table 2 Historical Groundwater Analytical Results for VOCs (gg/L) Merrimack Valley Works nG:%P-ECTS111621039\06M_entl MonMarinplG6M flepolb�DebTabbsVAeN91Teb42 tls 5 of 88 Concentration (µg/L) � R e MCP Ground- o a Well water F u u v � o = c r o o 0 Location Sample Classif- `o ID Date ication N Q m U U u MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20,000 30,000 20 000 NL 50,000 10,000 NL ]0 0001 50,000 IP -22 10/27/2003 GW -3 500 U 500 U 500 U 500 U 25,000 U 25,000 U 500 U 1,000 U 500 U 420 J IP -28 10/27/2003 GW -3 50 U 50 U 50U 50 U 2,500 U 2,500 U 50 U 100 U 50 U 240 IP -34 10/27/2003 GW -3 1,000 U 1,000 U 1,000 U 1,000 U 50,000 U 50,000 U 1,000 U 2,000 U 1,000 U 1,000 U IP -41 10/27/2003 GW -3 50 U 50 U 50 U 50 U 2,500 U 2,500 U 50 U 100 U 50 U 50 U MW -01D 7/1/1986 ND ND ND ND NR ND ND NR NR ND MW -01D 7/1/1987 ND ND ND ND NR ND ND NR NR ND MW -01D 12/1/1996 ND ND ND ND NR ND ND NR NR ND MW -01D 12/15/1997 GW -3 ND ND ND ND NR ND ND NR NR ND MW -01D 12/17/1998 ND ND ND ND NR ND ND NR NR ND MW -01D 12/15/1999 ND ND ND ND NR ND ND NR NR ND MW -01D 12/13/2000 1 ND ND ND ND NR ND ND NR NR ND MW -01D 12/12/2001 ND ND ND ND NR ND ND NR NR ND MW-OID 10/14/2003 1.0U 1.0U 1.0U 1.0U 50U 50U 1.0U 2.0U 1.0U 1.0U MW -02D 7/1/1986 GW -3 ND ND ND ND NR ND ND NR NR ND MW -02D 5/1/1987 14 11 ND ND NR ND ND NR NR ND MW -02D 7/1/1987 14 11 ND ND NR ND ND NR NR ND MW -02S 7/1/1986 GW -3 47,000 13,000 39,000 ND NR ND ND NR NR ND MW -02S 5/1/1987 47,200 10,000 10,000 10,000 NR ND 10,000 NR NR ND MW -02S 7/1/1987 47,200 ND ND I ND NR ND ND NR NR ND nG:%P-ECTS111621039\06M_entl MonMarinplG6M flepolb�DebTabbsVAeN91Teb42 tls 5 of 88 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works GAPROJECTS\115116 Of 88 Concentration ( g/L u c y Y u R a ° d C C v v v MCP a U e Ground- 0 Well water ;-1 Location Sample Classif- y q V V a ID Date ication E :9F F F 1� > MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50 000 50,000 50,0()0 30,000 4 000 50,000 5,000 NL 50!000 IP -22 10/27/2003 GW -3 500 U 5,000 U 500 U 1,000 U 500 U 500 U 500 U 15,000 1,000 U 1,000 U IP -28 10/27/2003 GW -3 50 U 1 500 U 1 50 U 100 U 50 U 50 U 50 U 1,700 100 U 100 U IP -34 1 10/27/2003 GW -3 1,000 U 10,000 U 1,000 U 2,000 U 1,000 U 1,400 1,000 U 52,000 2,000 U 2,000 U IP -41 10/27/2003 GW -3 50 U 500 U 50 U 100 U 50 U 50 U 50 U 2,100 100 U 100 U AM -01D 7/1/1986 GW -3 ND ND NR ND ND ND ND ND NR ND MW -01D 7/1/1987 ND ND NR ND ND ND ND ND NR ND MW -01D 12/1/1996 ND ND NR ND ND ND ND ND NR ND MW -01D 12/15/1997 ND 26 NR ND ND ND ND ND NR ND MW -01D 12/17/1998 ND ND NR ND ND ND ND ND NR ND MW -01D 12/15/1999 ND ND NR ND ND ND ND ND NR ND MW -01D 12/13/2000 ND ND NR ND ND ND ND ND NR ND MW -01D 12/12/2001 ND ND NR ND ND ND ND ND NR ND AM -01D 10/14/2003 1.0U IOU 1.0U 2.0U 1.0U 1.0U 1.0U 1.0U 2.0U 2.0U MW -021) 7/1/1986 GW -3 ND ND NR ND ND ND ND ND NR ND MW -02D 5/1/1987 ND ND NR ND ND ND ND 47 NR ND MW -02D 7/1/1987 ND ND NR ND ND ND ND 47 NR ND MW -02S 7/1/1986 GW -3 ND ND NR ND ND 24,000 ND 60,000 NR ND MW -02S 5/1/1987 ND ND NR 10,000 1 10,000 94,170 10,000 67,330 NR 10,000 MW -02S 7/1/1987 ND ND NR ND I ND 94,170 ND 67,330 NR ND GAPROJECTS\115116 Of 88 n rT i u n 1 P LI C Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works EO:\PROJECTS\116211111 M entl Monitormp106M_Repoi6\DahTabksVAarU9\Tabk2.tls 7 of 88 Concentration ( g/L) Well Location ID Sample Date MCP Ground- water Classif- ication y o E✓ .. .; � C A 0 `o v A .. d 657 A 0 _ u G? d R L o _ 7 A o G d e 0 a = e _ U F C e U L O ° x A rN u MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20 000 30 000 20 000 NL 50 000 10 000 NL 10,000 50,000 MW -03D 7/1/1986 ND ND ND ND NR ND ND NR NR ND MW -03D 7/1/1987 ND 36 ND ND NR ND ND NR NR ND MW -03D 12/1/1996 ND ND ND ND NR ND ND NR NR ND MW -03D 12/12/1997 ND ND ND ND NR ND ND NR NR ND MW -03D 12/17/1998 ND ND ND ND NR ND ND NR NR ND MW -03D 12/10/1999 ND ND ND ND NR ND ND NR NR ND MW -03D 12/13/2000 ND ND ND ND NR ND ND NR NR ND MW -03D 12/13/2000 ND ND ND ND 50 U ND ND NR NR ND MW -03D 1/24/2002 NR NR NR NR 250 U NR NR NR NR NR MW -03D 2/12/2002 NR NR NR NR 250 U NR NR NR NR NR MW -03D 3/7/2002 GW -3 NR NR NR NR 250 U NR NR NR NR NR MW -03D 10/18/2002 NR NR NR NR 50 U NR NR NR NR NR MW -03D 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U 50 U IOU 2.0 U NR 2.0 U 2.0 U MW -03D 10/14/2003 0.70 J 10 2.0 1.0 U 50 U * 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -03D 1/27/2004 5.0 U 5.0 U 5.0 U 5.0 U 50 U * 250 U 5.0 U IOU 5.0 U 5.0 U MW -03D 1/27/2004 5.0 U 5.0 U 5.0 U 5.0 U 50 U 250 U 5.0 U IOU 5.0 U 5.0 U MW -03D 4/28/2004 5.0 U 5.0 U 5.0 U 5.0 U 50 U 250 U 5.0 U IOU 5.0 U 5.0 U MW -03D 7/15/2004 1.7 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -03D 10/20/2004 1.5 2.4 1.8 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U LO U MW -03D 11/1/2005 3.2 4.0 0.95 J 1.0 U NR .50 U * 1.0 U 2.0 U 1.0 U 1.0 U MW -031.) 11/3/2006 1.0 U 1.0 U 0.77 J 1.0 U NR 50 U * 1.0 U 2.0 U 1.0 U 1.0 U MW -03D 4/26/2007 1.0 U 3.4 3.3 1.0 U NR 50 U * 1.0 U 2.0 U 1.0 U 1.0 U MW -03D 7/18/2008 1.0 U 1.4 0.77 J 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.0 U EO:\PROJECTS\116211111 M entl Monitormp106M_Repoi6\DahTabksVAarU9\Tabk2.tls 7 of 88 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works GAPROJEOT6111621039%06M ,,,_Mmft,,Inp\ObM_R�por 0,%T,bWzW.M9\T.b62.01 8 Of 88 Concentration ( L) d e v d d L MCP O x a O U d r d C L °o d C Ground- 0 = r w Well water Location Sample Classif- y d L o a u u ID Dateication o F > MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 509000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 89000 90 30 NL 2 MCP GW -3 500 50,000 50 000 50,000 30,000 4 000 50,000 5,000 NL 50,000 MW -03D 7/1/1986 GW -3 ND ND NR ND ND ND ND ND NR ND MW -03D 7/1/1987 ND ND NR ND ND ND ND ND NR ND MW -03D 12/1/1996 ND ND NR ND ND ND ND 48 NR ND MW -03D 12/12/1997 ND 27 NR ND ND ND ND 1.1 NR ND MW -03D 12/17/1998 ND ND NR ND ND ND ND 1.8 NR ND MW -03D 12/10/1999 ND ND NR ND ND ND ND 1.8 NR ND MW -03D 12/13/2000 ND ND NR ND ND ND ND 2.0 NR ND MW -03D 12/13/2000 ND ND NR ND ND ND ND 2.8 NR ND MW -03D 1/24/2002 NR NR NR NR NR NR NR NR NR NR MW -03D 2/12/2002 NR NR NR NR NR NR NR NR NR NR MW -03D 3/7/2002 NR NR NR NR NR NR NR NR NR NR MW -03D 10/18/2002 NR NR NR NR NR NR NR NR NR NR MW -03D 2/20/2003 2.0 U IOU 2.0 U 5.0 U 2.0 U 2.0 U 2.0 U 70 1 2.0 U 2.0 U MW -03D 10/14/2003 1.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 7.0 2.0 U 2.0 U MW -03D 1/27/2004 5.0 U 50 U 5.0 U IOU 5.0 U 5.0 U 5.0 U 87 IOU 2.0 U MW -03D 1/27/2004 5.0 U 50 U 5.0 U IOU 5.0 U 5.0 U 5.0 U 88 IOU 2.0 U MW -031) 4/28/2004 5.0 U 50 U 5.0 U IOU 5.0 U 5.0 U 5.0 U 95 5.0 U 5.0 U MW -031) 7/15/2004 1.0 U IOU 1.0 U 2.0 U 0.78 J 1.0 U 1.0 U 1.0 1.0 U 1.0 U MW -031) 10/20/2004 1.0 U IOU 1.0 U 2.0 U 0.57 J 1.0 U 1.0 U 2.4 1.0 U 1.0 U MW -03D 11/1/2005 2.0U IOU 1.0U 2.0U 2.3 1.0U 1.0U 5.9 1.0U 1.0U MW -03D 11/3/2006 2.0U IOU* 1.0U 2.0U 1.0U* 1.0U 1.0U 22 1.0U 1.0U MW -031) 4/26/2007 2.0U IOU* 1.0U 2.0U 1.0U 1.0U I.0U 8.5 I.0U* 1.0U MW -03D 7/18/2008 2.2_L_L IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 14 1.0 U 0.50 U GAPROJEOT6111621039%06M ,,,_Mmft,,Inp\ObM_R�por 0,%T,bWzW.M9\T.b62.01 8 Of 88 n U n n u F? V Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration (pg/L) R y A d Cl d t A 4 O 3 0 `O a R € R *4 O =j V O p G p p G? G A A «°� c ,. ,. O d MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20,000 30,000 20,000 NL 50,000 10,000 NL 10,000 MW -03S 7/1/1986 150 17 33 ND NR ND ND NR NR _50,000 ND MW -03S 7/1/1987 468 ND 73 ND NR ND ND NR NR ND MW -03S 12/13/2000 460 8.9 16 ND NR ND ND NR NR ND MW -03S 3/13/2001 390 11 18 ND 500 U ND ND NR NR ND MW -03S 1/24/2002 NR NR NR NR 260 NR NR NR NR NR MW -03S 2/12/2002 NR NR NR NR 250 U NR NR NR NR NR MW -03S 3/7/2002 NR NR NR NR 50 U NR NR NR NR NR MW -03S 10/18/2002 GW -3 NR NR NR NR 50 U * NR NR NR NR NR MW -03S 2/20/2003 24 2.0 U 1.0 U 2.0 U 50 U IOU 2.0 U NR 2.0 U 2.0 U MW -03S 10/14/2003 260 29 19 IOU 500 U * 500 U IOU 20 U IOU IOU MW -03S 1/27/2004 130 16 8.0 5.0 U 250 U 250 U 5.0 U IOU 5.0 U 5.0 U MW -03S 4/28/2004 5.0 U 5.0 U 5.0 U 5.0 U 50 U * 250 U 5.0 U IOU 5.0 U 5.0 U MW -03S 7/15/2004 7.9 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -03S 11/1/2005 25 1.3 0.74 J 1.0 U NR 50 U * 1.0 U 2.0 U 1.0 U 1.0 U MW -03S 5/8/2006 1.0 U 1.0 U * 1.0 U 1.0 U NR 50 U * 1.0 U 2.0 U 1.0 U 1.0 U MW -03S 11/3/2006 190 14 61 IOU NR 500 U * IOU 20 U IOU 8.1 J MW -03S 4/26/2007 5.0 U 5.0 U 5.0 U 5.0 U NR 250 U * 5.0 U IOU 5.0 U 5.0 U MW -03S 7/18/2008 23 3.2 0.72 J 1.0 U NR 50 U * 1.0 U 2.0 U 1.0 U 1.0 U MW -04D 7/1/1986 GW -2 ND ND ND ND NR ND ND NR NR ND MW -04D 7/1/1987 ND ND ND ND NR ND ND NR NR ND MW -041) 12/1/1996 ND ND ND ND NR ND ND NR NR ND MW -04D 12/11/1997 ND ND ND ND 50 U ND ND NR NR ND MW -04D 12/16/1998 ND ND ND ND 50U ND ND NR NR ND MW -04D 12/9/1999 ND ND ND ND NR ND ND NR NR ND MW -04D 12/13/2000 ND ND ND ND NR ND ND NR NR ND MW -04D 10/18/2002 NR NR NR NR NR NR NR NR NR NR MW -041) 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U NR 2.0 U NR 2.0 U 2.0 U MW -04D 1/26/2004 1.0 U 1.0 U 1.0 U 1.0 U NR --IOU 50U 1.0 U 2.0 U 1.0 U 1.0 U MW -04D 4/21/2005 1.0 U 1.0 U 1.0 U 1.0 U NR 50U 1.0 U 2.0 U 1.0 U 1.0 U G\PRWELTS1115 103910&M end M,,R,,h9\08M Re tlO T�bk,W,,091TeW2.4, 9 of 88 V Table 2 Historical Groundwater Analytical Results for VOCs (pg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( L) d o w v r s � e = o v fl o d 0 a U c r a, a v u u E E✓ F .�`. F F C > MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 509000 509000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50,000 50,000 50,000 30,000 4 000 50,000 5 000 NL 50 000 MW -03S 7/1/1986 GW -3 ND ND NR ND ND ND ND 120 NR ND MW -03S 7/1/1987 ND ND NR ND ND ND ND 198 NR ND MW -03S 12/13/2000 ND ND NR ND 16 ND ND 40 NR ND MW -03S 3/13/2001 ND ND NR ND 11 ND ND 36 NR ND MW -03S 1/24/2002 NR NR NR NR NR NR NR NR NR NR MW -03S 2/12/2002 NR NR NR NR NR NR NR NR NR NR MW -03S 3/7/2002 NR NR NR NR NR NR NR NR NR NR MW -03S 10/18/2002 NR NR NR NR NR NR NR NR NR NR MW -03S 2/20/2003 2.0 U IOU 2.0 U 5.0 U 2.0 2.0 U 2.0 U 3.0 2.0 U 2.0 U MW -03S 10/14/2003 IOU 100 U IOU 20 U 9.0 J IOU IOU 28 20 U 20 U MW -03S 1/27/2004 5.0 U 50 U 5.0 U IOU 6.0 5.0 U 5.0 U 20 IOU 2.0 U MW -03S 4/28/2004 5.0 U 50 U 5.0 U IOU 5.0 U 3.0 J 5.0 U 240 5.0 U 5.0 U MW -03S 7/15/2004 1.0 U IOU 1.0 U 2.0 U 3.2 1.0 U 1.0 U 4.9 1.0 U 1.0 U MW -03S 11/1/2005 2.0 U IOU 1.0 U 2.0 U 15 1.0 U 1.0 U 19 1.0 U 1.0 U MW -03S 5/8/2006 2.0 U IOU 1.0 U 2.0 U 0.68 J 1.0 U 1.0 U 1.0 U 1.0 U * 1.0 U MW -03S 11/3/2006 20 U 100 U * 10 U 20 U 10* IOU IOU 170 IOU IOU MW -03S 4/26/2007 IOU 50 U 5.0 U IOU 5.0 U 5.0 U 5.0 U 4.9 J 5.0 U 5.0 U MW -03S 7/18/2008 2.0 U IOU 1.0 U 2.0 U 7.7 1.0 U 1.0 U 20 1.0 U 0.50 U MW -04D 7/1/1986 GW -2 ND ND NR ND ND ND ND ND NR ND MW -04D 7/1/1987 ND ND NR ND ND ND ND ND NR ND MW-OdD 12/1/1996 ND ND NR ND ND ND ND ND NR ND MW -04D 12/11/1997 ND ND NR ND ND ND ND ND NR ND MW -041) 12/16/1998 ND ND NR ND ND ND ND ND NR ND MW -04D 12/9/1999 ND ND NR ND ND ND ND ND NR ND MW -04D 12/13/2000 ND ND NR 5.2 ND ND ND ND NR ND MW -04D 10/18/2002 NR NR NR NR NR NR NR NR NR NR MW -04D 2/20/2003 2.0 U IOU 2.0 U 5.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U MW -04D 1/26/2004 1.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.0 U 2.0 U 0.30 U MW -04D 4/21/2005 1.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U GAPRWECT9\118219391GEM_mE_Monkorin9\06M_Raporta\OataTebNSVAeN91TabM2.tla 10 of 88 n rT u n 4 I i I.j Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( /L) d C Z C O C a� A C O 3 d d d O O R ��„ u u o e A c r' 4 u -� Q O o o w M U U d Y A o A Z MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20,000 30 000 20,000 NL 50,000 10,000 NL ] 0 000 50,000 MW -04S 7/1/1986 GW -2 ND 17 ND ND NR ND ND NR NR ND MW -04S 7/1/1987 ND 39 36 ND NR ND ND NR NR ND MW -04S 12/1/1996 ND ND ND ND NR ND ND NR NR 4.3 MW -04S 3/26/1997 ND ND ND ND NR ND ND NR NR 4.3 MW -04S 6/24/1997 ND ND ND ND NR ND ND NR NR 7.4 MW -04S 9/25/1997 ND ND ND ND NR ND ND NR NR 3.8 MW -04S 12/11/1997 ND ND ND ND NR ND ND NR NR 4.9 MW -04S 3/24/1998 ND ND ND ND NR ND ND NR NR 15 MW -04S 6/29/1998 ND 3.6 ND ND NR ND ND NR NR 12 MW -04S 9/25/1998 ND 1.5 ND ND NR ND ND NR NR 12 MW -04S 12/16/1998 ND ND ND ND NR ND ND NR NR 12 MW -04S 12/9/1999 ND ND ND ND NR ND ND NR NR 4.5 MW -04S 9/14/2000 ND ND ND ND 50 U ND ND NR NR 1.5 MW -04S 12/13/2000 ND ND ND ND 50 U ND ND NR NR 1.6 MW -04S 4/2/2001 ND ND ND ND 50 U ND ND NR NR 1.4 MW -04S 12/12/2001 ND 2.8 ND ND 50 U ND ND NR NR 1.6 MW -048 10/18/2002 NR NR NR NR 50 U NR NR NR NR NR MW -04S 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U 250 U * IOU 2.0 U NR 2.0 U 2.0 U MW -04S 10/14/2003 1.0 U 2.0 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 4.0 MW -04S 1/26/2004 1.0 U 3.0 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 6.0 MW -04S 9/2/2005 1.0 U 1.8 0.50 J 1.0 U NR 50 U 1.0 U 0.59 J 1.0 U 25 MW -04S 1/20/2006 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U * 1.0 U 2.0 U 1.0 U 6.2 MW -04S 5/8/2006 1.0 U 1.5 1.0 U 1.0 U NR 50 U * 1.0 U 2.0 U 1.0 U 16 MW -04S 10/25/2007 5.0 U 5.0 U 5.0 U 5.0 U NR 250 U 5.0 U IOU 5.0 U CG: 1PRO3EOT51116210391O&M and M,,k,,hglOBM Rep MO,D Tebl ,W,r 91TaW2.A, 11 Of 88 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( /L) y °o d = m a � Z L e o a U e s ;: o F F y C Z R y e E _ o °e e u u .`R H F C > MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50,000 50,000 50,000 30,000 4,000 50 000 5 000 NL 50 000 MW -04S 7/1/1986 GW -2 ND ND NR ND ND ND 39 17 NR ND MW -04S 7/1/1987 ND ND NR ND ND ND 73 91 NR 438 MW -04S 12/1/1996 ND ND NR ND ND ND ND ND NR 6.2 MW -04S 3/26/1997 ND ND NR ND ND ND ND ND NR ND MW -04S 6/24/1997 ND ND NR ND ND ND ND ND NR 5.1 MW -04S 9/25/1997 ND ND NR ND ND ND ND ND NR 3.4 MW -04S 12/11/1997 ND 35 1 NR ND ND ND ND ND NR 2.3 MW -04S 3/24/1998 ND ND NR ND ND ND 1.2 ND NR 10 MW -03S 6/29/1998 ND ND NR ND 2.8 ND ND 6.0 NR 13 MW -04S 9/25/1998 ND ND NR ND ND ND ND 1.8 NR 8.7 MW -04S 12/16/1998 ND ND NR ND ND ND ND ND NR ND MW -04S 12/9/1999 ND ND NR ND ND ND ND 1.0 NR 7.3 MW -04S 9/14/2000 ND ND NR ND ND ND ND ND NR ND MW -04S 12/13/2000 ND ND NR ND ND ND ND ND NR ND MW -04S 4/2/2001 ND ND NR ND ND ND ND ND NR 2.5 MW -04S 12/12/2001 ND ND NR ND ND ND ND 1.2 NR 1.4 MW -04S 10/18/2002 NR NR NR NR NR NR NR NR NR NR MW -04S 2/20/2003 2.0 U IOU 2.0 U 5.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 MW -04S 10/14/2003 1.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.0 2.0 U 4.0 MW -04S 1/26/2004 1.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 2.0 2.0 U 5.0 MW -04S 9/2/2005 1.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.3 4.7 1.0 U 19 MW -04S 1/20/2006 2.0 U I O U 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 2.3 1.0 U 4.3 MW -04S 5/8/2006 2.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 0.77 J 1.7 1.0 U 9.3 MW -04S 10/25/2007 IOU 50 U 5.0 U IOU 5.0 U 5.0 U 5.0 U 5.0 U 5.0 U 2.5 U GAPRWECTS11162103910&M ,d M,,k,,ngIO6M_R,por ftT�bk,W,A91TaEY2.W, 12 Of 88 Table 2 Historical Groundwater Analytical Results for VOCs (µg/l-) Merrimack Valley Works 0:%PRWECTS111S21039%MM end M.,hml,9\06M_Reporls� TabW,N,091T-2.4, 13 of 88 Concentration (p /L) Well Location ID Sample Date MCP Ground- water Classif- ication O F .y a 0 _ u r 0 .L°. u ti r o _ 0 N a o Q 0 a 0 0 U o U s O u MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20,000 30,000 20,000 NL 50,000 10,000 NL 10,000 50,000 MW -05D 7/1/1986 ND ND ND ND NR ND ND NR NR ND MW -05D 7/1/1987 ND 11 ND ND NR ND ND NR NR ND MW -05D 12/24/1996 ND 1.0 ND ND NR ND ND NR NR ND MW -051) 3/26/1997 ND ND ND ND NR ND ND NR NR ND MW -05D 6/24/1997 ND ND ND ND NR ND ND NR NR ND MW -05D 9/24/1997 ND ND ND ND NR ND ND NR NR ND MW -05D 12/11/1997 ND ND ND ND NR ND ND NR NR ND MW -05D 3/24/1998 ND ND ND ND NR ND ND NR NR ND MW -05D 6/22/1998 ND ND ND ND NR ND ND NR NR ND MW -05D 9/25/1998 ND ND ND ND NR ND ND NR NR ND MW -05D 12/14/1998 GW -3 ND ND ND ND NR ND ND NR NR ND MW -05D 12/9/1999 ND ND ND ND NR ND ND NR NR ND MW -05D 3/9/2000 ND ND ND ND NR ND ND NR NR ND MW -05D 6/13/2000 ND ND ND ND NR ND ND NR NR ND MW -05D 9/14/2000 ND ND ND ND 50 U ND ND NR NR ND MW -05D 12/11/2000 ND ND ND ND 500 U ND ND NR NR ND MW -05D 4/2/2001 ND ND ND ND 99 * ND ND NR NR ND MW -05D 12/12/2001 ND ND ND ND NR ND ND NR NR ND MW -05D 2/20/2002 2.0 U 2.0 U 1.0 U 2.0 U NR IOU 2.0 U NR 2.0 U 2.0 U MW -05D 7/10/2003 2.0 U 2.0 U 1.0 U 2.0 U NR IOIL_ 2.0 U 2.0 U 2.0 U 2.0 U MW -051) 10/13/2003 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 1.0 J 1.0 U 1.0 U MW -05D 1/27/2004 IOU IOU IOU IOU NR 500 U IOU 20U IOU IOU MW -05D 10/25/2007 1.0 U 1.0 U 1.0 U 1.0 U NR 50U 1.0 U 2.0 U 1.0 U 0.58 J 0:%PRWECTS111S21039%MM end M.,hml,9\06M_Reporls� TabW,N,091T-2.4, 13 of 88 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( /L) u d r "f. e 71 a c Y � U d a $ A c L A413 L F F A u A c R r C y A d _ u u F F d C U > MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50,000 50,000 50,000 30 000 4 000 50 000 5 000 NL 50 000 MW -05D 7/1/1986 GW -3 ND ND NR ND ND ND ND 49 NR ND MW -05D 7/1/1987 ND ND NR ND ND ND ND 16 NR ND MW -05D 12/24/1996 ND ND NR ND ND ND ND ND NR ND MW -05D 3/26/1997 ND ND NR ND ND ND ND ND NR ND MW -05D 6/24/1997 ND ND NR ND ND ND ND ND NR ND MW -05D 9/24/1997 ND ND NR ND ND ND ND ND NR ND MW -05D 12/11/1997 ND 26 NR ND ND ND ND ND NR ND MW -051) 3/24/1998 ND ND NR ND ND ND ND ND NR ND MW -05D 6/22/1998 ND ND NR ND ND ND ND ND NR ND MW -051) 9/25/1998 ND ND NR ND ND ND ND ND NR ND MW -051) 12/14/1998 ND ND NR ND ND ND ND ND NR ND MW -051) 12/9/1999 ND ND NR ND ND ND ND ND NR ND MW -05D 3/9/2000 ND ND NR ND ND ND ND ND NR ND MW -051) 6/13/2000 ND ND NR ND ND ND ND ND NR ND MW -05D 9/14/2000 ND ND NR ND ND ND ND ND NR ND MW -051) 12/11/2000 ND ND NR ND ND ND ND ND NR ND MW -051) 4/2/2001 ND ND NR ND ND ND ND ND NR ND MW -05D 12/12/2001 ND ND NR ND ND ND ND 3.4 NR ND MW -051) 2/20/2002 2.0 U IOU 2.0 U 5.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U MW -05D 7/10/2003 2.0U IOU 2.0U 5.0U 2.0U 2.0U 2.0U 2.0U 2.0U 2.0U MW -05D 10/13/2003 1.0U IOU 1.0U 2.0U 1.0U 1.0U 1.0U 1.0U 2.0U 2.0U MW-OSD 1/27/2004 IOU 100 U IOU 20U IOU IOU IOU IOU 20 U 3.0 U MW -05D 10/25/2007 2.0 U IOU 1.0 U 2.0 U 1.0 U I.LjLJ 1.0 U 1.0 U 1.0 U 0.50 U GAPRWECT611 l62l009106M end M,nkorbp10&4 R,p,MV.UT,b sWA M91Tebb2.tl 14 of 88 n '1 I LJ f� u F, t-1 r� i L-.1 rT 1-J n L4 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works G:\PRWECTSM1 1039103M entl Monitarin9\06M Raporh\DateTebksVAaN9\TabbZ.dz 15 of 88 ` i Concentration (µg/L) Well Location ID Sample Date MCP Ground- water Classif- ication c R r o F °R 0 _ Q v 05 0 `o A v A o L A N� a c A ao ° d du N c r-0 e R `o U O o U ti v � u u A u MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20,000 30,000 20,000 NL 50,000 10,000 NL 10,000 50,000 MW -05S 7/1/1987 ND 2.5 4.6 ND NR ND ND NR NR ND MW -05S 12/24/1996 ND 4.8 ND ND NR ND ND NR NR ND MW -05S 3/26/1997 ND 1.7 ND ND NR ND ND NR NR ND MW -OSS 6/24/1997 ND ND ND ND NR ND ND NR NR ND MW -05S 9/24/1997 ND ND ND ND NR ND ND NR NR ND MW -05S 12/11/1997 ND ND ND ND NR ND ND NR NR ND MW -05S 3/24/1998 ND 2.1 ND ND NR ND ND NR NR ND MW -05S 6/22/1998 ND 2.5 ND ND NR ND ND NR NR ND MW -05S 9/28/1998 ND ND ND ND NR ND ND NR NR ND MW -05S 12/14/1998 ND ND ND ND NR ND ND NR NR ND MW -05S 12/9/1999 ND ND ND ND NR ND ND NR NR ND MW -05S 3/9/2000 GW -3 ND ND ND ND NR ND ND NR NR ND MW -05S 6/13/2000 ND ND ND ND NR ND ND NR NR ND MW -05S 9/14/2000 ND ND ND ND 50 U ND ND NR NR ND MW -05S 12/11/2000 ND ND ND ND 500 U ND ND NR NR ND MW -05S 4/2/2001 ND 1.6 ND ND 250 U * ND ND NR NR ND MW -05S 12/12/2001 ND ND ND ND 250 U * ND ND NR NR ND MW -05S 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U NR IOU 2.0 U NR 2.0 U 2.0 U MW -05S 7/10/2003 2.0 U 2.0 U 1.0 U 2.0 U NR IOU 2.0 U 2.0 U 2.0 U 2.0 U MW -05S 10/13/2003 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 0.80 J 1.0 U 1.0 U MW -05S 1/27/2004 .10 U IOU IOU IOU NR 500 U IOU 20 U IOU IOU MW -058 10/24/2007 5.0 U 5.0 U 5.0 U 5.0 U NR 250 U 5.0 U IOU 5.0 U 1.7 J MW -05S 10/24/2007 5.0 U 5.0 U 5.0 U 5.0 U NR 250 U 5.0 U IOU 5.0 U 5.0 U G:\PRWECTSM1 1039103M entl Monitarin9\06M Raporh\DateTebksVAaN9\TabbZ.dz 15 of 88 ` i Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works G:%P-ECT-1621G3 0- - ManWhgXG6M_R,por6lD UbW,1M,M%TW,2.As 16 of 88 Concentration (µ /L) c d v O Y d '� C7 tOi N MCPr U Z d O V d Ground- 4i r v w Well water 71 p v+ Location Sample Classif- a r L a u a ID Date ication E F F H F MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50,020 50,000 50 000 30,000 4,000 50,000 5,000 NL 50,000 MW -05S 7/1/1987 GW -3 ND ND NR ND ND ND 12 ND NR ND MW -05S 12/24/1996 ND ND NR ND ND ND ND ND NR ND MW -05S 3/26/1997 ND ND NR ND ND ND ND ND NR ND MW -05S 6/24/1997 ND ND NR ND ND ND ND ND NR ND MW -05S 9/24/1997 ND ND NR ND ND ND ND ND NR ND MW -05S 12/11/1997 ND 29 NR ND ND ND ND ND NR ND MW -05S 3/24/1998 ND ND NR ND ND ND ND ND NR ND MW -05S 6/22/1998 ND ND NR ND ND ND ND ND NR ND MW -05S 9/28/1998 ND ND NR ND ND ND ND ND NR ND MW -05S 12/14/19981 ND ND NR ND ND ND ND ND NR ND MW -05S 12/9/1999 ND ND NR ND ND ND ND ND NR ND MW -05S 3/9/2000 ND ND NR ND ND ND ND ND NR ND MW -05S 6/13/2000 ND ND NR ND ND ND ND ND NR ND MW -05S 9/14/2000 ND ND NR ND ND ND ND ND NR ND MW -05S 12/11/2000 ND ND NR 5.3 ND ND ND ND NR ND MW -05S 4/2/2001 ND ND NR ND ND ND ND ND NR ND MW -05S 12/12/2001 ND ND NR ND ND ND ND 5.7 NR ND MW -05S 2/20/2003 2.0 U IOU 2.0 U 5.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U MW -05S 7/10/2003 2.0 U IOU 2.0 U 5.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U MW -05S 10/13/2003 1.0U IOU 1.0U 2.0U 1.0U 1.0U 1.0U 1.0U 2.0U 2.0U MW -05S 1/27/2004 IOU 100 U IOU 20 U IOU IOU IOU IOU 20 U 3.0 U MW -05S 10/24/2007 IOU 50 U 5.0 U IOU 5.0 U 5.0 U 5.0 U 5.0 U 5.0 U 2.5 U MW -05S 10/24/2007 l0 U 50 U 5.0 U_L IOU 5.0 U 5.0 U 5.0 U 5.0 U 5.0 U 2.5 U G:%P-ECT-1621G3 0- - ManWhgXG6M_R,por6lD UbW,1M,M%TW,2.As 16 of 88 n I� Lj fT n �-1 n i 4J i n I lJ F-1, i_1 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( /L) v c y R d lC0 u d d v 0 0 0 = E F u uo e e o o - Ca A Al y d E L 7 i�J iV L" L" „ „ d W U U � � C u A N u MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20 000 30,000 20,000 NL 50,000 10,000 NL 10,000 50,000 MW -06D 7/1/1986 GW -3 22 130 110 ND NR ND ND NR NR ND MW -06D 7/1/1987 ND 218 135 ND NR ND ND NR NR ND MW -06D 12/24/1996 ND 58 43 ND NR ND ND NR NR 52 MW -061) 3/26/1997 ND 52 46 ND NR ND ND NR NR 51 MW -06D 6/24/1997 ND 43 30 ND NR ND ND NR NR 48 MW -06D 9/24/1997 ND 47 34 ND NR ND ND NR NR 46 MW -06D 12/11/1997 ND 41 24 ND NR ND ND NR NR 40 MW -061) 3/24/1998 ND 35 20 ND NR ND ND NR NR 31 MW -06D 6/22/1998 ND 34 22 ND NR ND ND NR NR 33 MW -06D 9/25/1998 ND 44 31 ND NR ND ND NR NR 45 MW -06D 12/14/1998 ND 30 21 ND NR ND ND NR NR 31 MW -06D 12/10/1999 ND 26 16 ND NR ND ND NR NR 29 MW -06D 3/9/2000 ND 20 11 ND NR ND ND NR NR 24 MW -06D 6/13/2000 ND 15 9.2 ND NR ND ND NR NR 22 MW -06D 9/18/2000 ND 9.8 5.7 ND NR ND ND NR NR 19 MW -06D 12/11/2000 ND 16 11 ND 50 U ND ND NR NR 22 MW -06D 4/2/2001 ND 15 15 ND 50 U ND ND NR NR 20 MW -06D 12/12/2001 0.69 ND ND ND 50 U ND ND NR NR 24 MW -06D 12/12/2001 ND 12 6.1 ND 50 U ND ND NR NR ND MW -06D 2/20/2003 2.0 U 22 15 2.0 U 50U IOU 2.0 U NR 2.0 U 46 MW -06D 7/10/2003 2.0 U 6.0 2.0 2.0 U 50 U * IOU 2.0 U 2.0 U 2.0 U 21 MW -06D 10/14/2003 1.0 U 6.0 2.0 1.0 U 250 U 50 U 1.0 U 2.0 U 1.0 U 19 MW -06D 1/27/2004 1.0 U 10 5.0 1.0 U 50 U * 50 U 1.0 U 2.0 U 1.0 U 27 MW -06D 4/28/2004 1.0 U 1.5 0.73 J 1.0 U 500 U * 50 U 1.0 U 2.0 U 1.0 U 7.5 MW -06D 10/19/2004 1.0 U 0.63 J 1.0 U 1.0 U 500 U 50 U 1.0 U 2.0 U 1.0 U 3.2 MW -06D 4/21/2005 1.0 U 17 0.71 J 0.50 J 500 U * 50 U 1.0 U 2.0 U 1.0 U 14 MW -06D 11/1/2005 1.0 U 33 7.7 0.66 J NR 50 U * 1.0 U 2.0 U 1.0 U 83 MW -06D 5/8/2006 5.0 U 27 * 14 5.0 U NR 250 U * 5.0 U 10 U 5.0 U 130 MW -06D 11/2/2006 1.0 U 58 38 1.7 * NR 50 U 1.0 U 2.0 U 1.0 U 150 MW -061) 10/25/2007 IOU 86 57 2.1 J NR 500 U IOU 20 U IOU 440 MW -06D 7/17/2008 IOU 44 1 32 10 U NR 500 U 10 U 20 U IOU 220 MW -06D 7/17/2008 10 U 40 27 10 U NR 500 U * IOU 20U IOU 210 1 G:�PRQIECTS\11G11g39\08M ene MankorMg106M Rapoi6�DadTebksgAaA9\Table2.dz 17 of 88 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( /L) v � � a d � o d fl v e x s r 0 is r ZV c a a °o w _ 3 A ` e a a 3 0 a i a e u E F F .�`. F F C U > MCP UCL 100,000 100,000 1001000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50,000 50,000 50,000 30,000 4 000 50 000 5 000 NL 50,000 MW -06D 7/1/1986 GW -3 ND ND NR ND ND ND 37 210 NR ND MW -06D 7/1/1987 ND ND NR ND ND ND ND 595 NR ND MW -06D 12/24/1996 ND ND NR ND ND ND ND 290 NR ND MW -06D 3/26/1997 ND ND NR ND 11 ND ND 280 NR ND MW -06D 6/24/1997 ND ND NR ND 9.1 ND ND 240 NR ND MW -06D 9/24/1997 ND ND NR ND 13 ND ND 280 NR ND MW -06D 12/11/1997 ND 30 NR ND 7.7 ND ND 200 NR ND MW -06D 3/24/1998 ND ND NR ND 6.0 ND ND 140 NR ND MW -061) 6/22/1998 ND ND NR ND 8.1 ND ND 170 NR ND MW -06D 9/25/1998 ND ND NR ND 9.5 ND ND 210 NR ND MW -06D 12/14/1998 ND ND NR ND 6.8 ND ND 160 NR ND MW -06D 12/10/1999 ND ND NR ND 6.2 ND ND 160 NR ND MW -06D 3/9/2000 ND ND NR ND 5.1 ND ND 110 NR ND MW -06D 6/13/2000 ND ND NR ND 3.4 ND ND 88 NR ND MW -06D 9/18/2000 ND ND NR ND 1.3 ND ND 45 NR ND MW -06D 12/11/2000 ND ND NR ND 4.0 ND ND 96 NR ND MW -06D 4/2/2001 ND ND NR ND 3.7 ND ND 120 NR ND MW -06D 12/12/2001 ND ND NR ND ND ND ND 60 NR ND MW -06D 12/12/2001 ND ND NR ND 1.5 ND ND ND NR ND MW -06D 2/20/2003 2.0 U IOU 2.0 U 5.0 U 3.0 2.0 U 2.0 U 95 2.0 U 2.0 U MW -06D 7/10/2003 2.0 U IOU 2.0 U 5.0 U 2.0 2.0 U 2.0 U 15 2.0 U 2.0 U MW -06D 10/14/2003 1.0 U IOU 1.0 U 2.0 U 2.0 1.0 U 1.0 U 16 2.0 U 2.0 U MW -06D 1/27/2004 1.0 U IOU 1.0 U 2.0 U 2.0 1.0 U 1.0 U 30 2.0 U 0.50 MW -06D 4/28/2004 1.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 2.4 1.0 U 1.0 U MW -06D 10/19/2004 1.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 3.6 1.0 U 1.0 U MW -06D 4/21/2005 1.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.3 1.0 U 9.6 MW -06D 11/1/2005 2.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 2.0 4.2 1.0 U 14 MW -06D 5/8/2006 IOU 50 U 5.0 U 6.4 J 5.0 U 5.0 U 3.4 J 5.2 5.0 U * 5.7 MW -06D 11/2/2006 2.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.4 * 20 1.0 U * 7.2 MW -06D 10/25/2007 20 U 100 U IOU 20 U IOU IOU IOU 50 IOU 14 MW -06D 7/17/2008 20 U 100 U IOU 15 J B IOU IOU IOU 64 IOU 8.0 MW -06D 7/17/2008 20 U 100 U IOU 20 U IOU IOU IOU 58 IOU 5.0 U G:%PROJECTS\115]1009IMNM ,,q M,,k,,Mg%MM R,pft%D,MT,bW,W,, 91T,bl,2.A, 18 of 88 n 1 Lj. n L L4 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- kation Concentration (µ /L) m c R i C C C R d R � r. % Z o 0 5 u o R ° F� u v 0 o e c ,., ,.. ., ., Q W U U v � r d L A 'u MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20,000 30,000 20,000 NL 50 000 10,000 NL 10,000 50,000 MW -06S 7/1/1986 GW -3 58 ND ND ND NR ND ND NR NR ND MW -06S 7/1/1987 39 ND ND ND NR ND ND NR NR ND MW -06S 12/24/1996 1.3 ND ND ND NR ND ND NR NR ND MW -06S 12/11/1997 1.7 ND ND ND NR ND ND NR NR ND MW -06S 12/14/1998 ND ND ND ND NR ND ND NR NR ND MW -06S 12/10/1999 ND ND ND ND 50 U ND ND NR NR ND MW -06S 12/11/2000 ND ND ND ND 50 U ND ND NR NR ND MW -06S 12/11/2000 ND ND ND ND 50 U ND ND NR NR ND MW -06S 12/12/2001 0.57 ND ND ND 50 U * ND ND NR NR ND MW -06S 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U NR IOU 2.0 U NR 2.0 U 2.0 U MW -06S 7/10/2003 2.0 U 2.0 U 1.0 U 2.0 U NR IOU 2.0 U 2.0 U 2.0 U 2.0 U MW -06S 10/14/2003 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -06S 1/27/2004 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -06S 10/19/2004 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -06S 10/24/2007 1.0 U 1.0 U 1.0 U 1.0 U NR 50U 1.0 U 2.0 U 1.0 U 1.0 U MW -07D 7/1/1986 GW -3 ND ND ND ND NR ND ND NR NR ND MW -07D 7/1/1987 ND ND ND ND NR ND ND NR NR ND MW -07D 12/1/1996 ND ND ND ND 50 U * ND ND NR NR ND MW -07D 12/12/1997 ND ND ND ND 500 U ND ND NR NR ND MW -07D 12/17/1998 ND ND ND ND NR ND ND NR NR ND MW -07D 12/15/1999 ND ND ND ND NR ND ND NR NR ND MW -07D 12/13/2000 ND ND ND ND 250 U ND ND NR NR ND MW -07D 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U 50 U IOU 2.0 U NR 2.0 U 2.0 U MW -07D 11/3/2006 0.81 J 1.0 U 1.0 U 1.0 U NR 50 U * 1.0 U 2.0 U 1.0 U 1.0 U MW-07DR 7/18/2008 GW -3 IOU IOU IOU 10 U NR 500 U IOU 20U IOU IOU MW -07S 7/1/1986 GW -3 ND ND ND ND NR ND ND NR NR ND MW -07S 7/1/1987 ND ND ND ND NR ND ND NRNR ND MW -07S 8/22/2007 0.50 U 0.75 U 0.50 U 0.50 U NR 5.0 U 0.50 U 1.0 U 0.75 U 0.50 U MW-07SR 1 7/18/2008 GW -3 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -081) 7/1/1986 GW -3 ND ND ND ND NR ND ND NR NR ND MW -08D 7/1/1987 ND ND ND ND NR ND ND NR NR ND MW -08D 7/1/1987 ND ND ND ND NR ND ND NR NR ND MW -08D 12/1/1996 ND ND ND ND NR ND ND NR NR ND MW -08D 12/12/1997 ND ND ND ND NR ND ND NR NR ND MW -08D 12/17/1998 ND ND ND ND NR ND ND NR NR ND MW -08D 12/10/1999 ND ND ND ND NR ND ND NR NR ND MW -08D 12/13/2000 ND ND ND ND NR ND ND NR NR ND G kMWECTS\11621039\O&M and M.nK L g%O M_R,9 MO,WT,bk,N, 091T1bh2- 19 Of 88 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( /L) v v 00 v ,�C t � . Z O a � C A Z � � a U o � c .v. a a % a a ? .0 E 1 :9F F .R`. F F 9 MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50 000 50 000 50,000 30,000 4 000 50,000 5,000 NL 50 000 MW -06S 7/1/1986 GW -3 ND ND NR ND ND ND ND 11 NR ND MW -06S 7/1/1987 ND ND NR ND ND ND ND ND NR ND MW -06S 12/24/1996 ND ND NR ND ND ND ND 1.2 NR ND MW -06S 12/11/1997 ND 51 NR ND ND ND ND 1.1 NR ND MW -06S 12/14/1998 ND ND NR ND ND ND ND ND NR ND MW -06S 12/10/1999 ND ND I NR ND ND ND ND ND NR ND MW -06S 12/11/2000 ND ND NR ND ND ND ND ND NR ND MW -06S 12/11/2000 ND ND NR 6.8 ND ND ND 1.1 NR ND MW -06S 12/12/2001 ND ND NR ND ND ND ND 0.57 NR ND MW -06S 2/20/2003 2.0 U IOU 2.0 U 5.0 U 2.0 U 2.0 U 2.0 U 2.0 U 4.0 2.0 U MW -06S 7/10/2003 2.0 U IOU 2.0 U 5.0 U 2.0 U 2.0 U 2.0 U 2.0 U 3.0 2.0 U MW -06S 10/14/2003 1.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.0 U 2.0 2.0 U MW -06S 1/27/2004 1.0 U IOU 1.0 U 2.0 U 0.70 J 1.0 U 1.0 U 2.0 2.0 J 0.30 U MW -06S 10/19/2004 1.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.2 1.0 U MW -06S 10/24/2007 2.0 U l0 U 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 0.50 U MW -07D 7/1/1986 GW -3 ND ND NR ND ND ND ND ND NR ND MW -07D 7/1/1987 ND ND NR ND ND ND ND ND NR ND MW -07D 12/1/1996 ND ND NR ND ND ND ND ND NR ND MW -07D 12/12/1997 ND 16 NR ND ND ND ND ND NR ND MW -07D 12/17/1998 ND ND NR ND ND ND ND ND NR ND MW -07D 12/15/1999 ND ND NR ND ND ND ND ND NR ND MW -07D 12/13/2000 ND ND NR ND ND ND ND ND NR ND MW -07D 2/20/2003 2.0 U IOU 2.0 U 5.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U MW -07D 11/3/2006 2.OU l0U* 1.OU 2.0U 1.OU* 1.0U 1.0U 6.0 1.0U 1.0U MW-07DR 7/18/2008 GW -3 20 U 100 U IOU 20 U IOU IOU IOU IOU IOU 5.0 U MW -07S 7/1/1986 GW -3 ND ND NR ND ND ND ND ND NR ND MW -07S 7/1/1987 ND ND NR ND ND ND ND ND NR ND MW -07S 8/22/2007 1.0 U 5.0 U 1.0 U 5.0 U 0.50 U 0.75 U 0.75 U 0.50 U 2.5 U 1.0 U MW-07SR 7/18/2008 GW -3 2.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 0.50 U MW -08D 7/1/1986 GW 3 ND ND NR ND ND ND ND ND NR ND MW -08D 7/1/1987 ND ND NR ND ND ND ND ND NR ND MW -08D 7/1/1987 ND ND NR ND ND ND ND ND NR ND MW -08D 12/1/1996 ND ND NR ND ND ND ND ND NR ND MW -08D 12/12/1997 ND ND NR ND ND ND ND ND NR ND MW -08D 12/17/1998 ND ND NR ND ND ND ND ND NR ND MW -08D 12/10/1999 ND ND NR ND NDE ND ND NR ND MW -08D 12/13/2000 ND ND4 NR ND NDD ND ND NR ND G:MWECTS%11621839106M_and MonkminplG6M RaporlslDataTaEMSV.laN81TaEN].tls 20 of 88 n �r C Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration (µg/L) t d C C R d R d F u o e a o o ri I U U 0 1. 67 A u MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20,000 30,000 20,000 NL 50,000 10,000 NL 10,000 50 000 MW -08S 7/1/1986 GW -3 31 ND ND ND NR ND ND NR NR ND MW -08S 7/1/1987 12 ND ND ND NR ND ND NR NR ND MW -08S 12/1/1996 ND ND ND ND 50 U ND ND NR NR ND MW -08S 12/12/1997 ND ND ND ND 50 U ND ND NR NR ND MW -08S 12/17/1998 ND ND ND ND 50 U ND ND NR NR ND MW -08S 12/10/1999 ND ND ND ND 50 U ND ND NR NR ND MW -08S 12/13/2000 ND ND ND ND 50 U * ND ND NR NR ND MW -08S 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U 250 U IOU 2.0 U NR 2.0 U 2.0 U MW -08S 10/13/2003 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -08S 1/27/2004 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -08S 4/28/2004 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 1 2.0 U 1.0 U 1.0 U MW -08S 7/15/2004 0.51 J 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U LOU MW -08S 11/1/2005 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U * 1.0 U 2.0 U 1.0 U 1.0 U MW -08S 8/22/2007 0.50 U 0.75 U 0.50 U 0.50 U NR 5.0 U 0.50 U 1.0 U 0.75 U 0.50 U MW -09D 7/1/1987 GW -3 21 24 ND ND NR ND ND NR NR ND MW -09D 12/1/1996 3.0 100 44 1.2 NR ND ND NR NR 78 MW -09D 3/26/1997 3.5 110 51 1.0 NR ND ND NR NR 66 MW -09D 6/24/1997 2.8 93 32 ND NR ND ND NR NR 52 MW -09D 9/24/1997 2.7 93 33 ND NR ND ND NR NR 50 MW -09D 12/11/1997 2.9 93 33 ND NR ND ND NR NR 53 MW -09D 3/24/1998 ND 17 4.2 ND NR ND ND NR NR 3.9 MW -09D 6/22/1998 ND 8.2 1.6 ND NR ND ND NR NR 1.7 MW -09D 9/25/1998 ND 36 7.6 ND NR ND ND NR NR 7.6 MW -09D 12/16/1998 ND 39 8.2 ND NR ND ND NR NR 10 MW -09D 12/10/1999 ND 98 32 ND NR ND ND NR NR 73 MW -09D 3/9/2000 ND 88 33 ND NR ND ND NR NR 82 MW -09D 6/13/2000 ND 65 23 1.0 500 U ND ND NR NR 63 MW -091) 9/14/2000 ND 70 26 ND 250 U ND ND NR NR 52 MW -09D 12/13/2000 ND 26 6.7 ND 250 U ND ND NR NR 13 MW -09D 4/2/2001 ND 83 43 ND 50 U ND ND NR NR 83 MW -09D 12/19/2001 ND 14 3.0 ND 250 U ND ND NR NR 5.0 MW -09D 2/20/2003 2.0 U 100 57 2.0 U NR IOU 2.0 U NR 2.0 U 170 MW -09D 10/14/2003 IOU IOU IOU IOU NR 500 U IOU 20 U IOU 25 MW -09D 1/28/2004 5.0 U 5.0 U 5.0 U 5.0 U NR 250 U 5.0 U IOU 5.0 U 9.0 MW -09D 1/28/2004 5.0 U 5.0 U 5.0 U 5.0 U NR 250 U 5.0 U IOU 5.0 U 9.0 MW -091) 10/19/2004 1.0 U 1.0 U 1.4 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 22 MW -09D 4/21/2005 5.0 U 5.0 U 4.0 J 5.0 U NR 250 U 5.0 U IOU 5.0 U I55 I` +, G:%PRWECTS\11GL1M9%OSM end M,,R,ri,g\O&M_RepoMkl TabbsV ,e MTebWA, 21 of 88 W Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( g/L) w C d w � N d O a .0 c r °o a �+ '- Ca ffi a W+r O N E L i, � C ri 71 i a v i a = u E F F F F C 3 r V a > MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50,000 50,000 50,000 30 000 4 000 50 000 5 000 NL 50 000 MW -08S 7/1/1986 GW -3 ND ND NR ND ND ND 23 49 NR ND MW -08S 7/1/1987 ND ND NR ND ND ND 12 22 NR ND MW -08S 12/1/1996 ND ND NR ND ND ND ND 2.1 NR ND MW -08S 12/12/1997 ND 18 NR ND ND ND ND ND NR ND MW -08S 12/17/1998 ND ND NR ND ND ND ND 1.3 NR ND MW -08S 12/10/1999 ND ND NR ND ND ND ND ND NR ND MW -08S 12/13/2000 ND ND NR ND ND ND ND ND NR ND MW -08S 2/20/2003 2.0 U IOU 2.0 U 5.0 U 2.0 U 2.0 U 2.0 U 1.0 U 2.0 U 2.0 U MW -08S 10/13/2003 1.0 U IOU 1.0 2.0 U 1.0 U 1.0 U 1.0 U 0.70 J 2.0 U 2.0 U MW -08S 1/27/2004 1.0 U IOU 1.0 2.0 U 1.0 U 1.0 U 1.0 U 1.0 J V 2.0 U 0.30 U MW -08S 4/28/2004 1.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U MW -08S 7/15/2004 1.0 U IOU 0.75 J 2.0 U 1.0 U 1.0 U 1.0 U 1.3 1.0 U 1.0 U MW -08S 11/1/2005 2.0U IOU 0.63J 2.0U 1.0U 1.0U 1.0U 1.1 1.0U 1.0U MW -08S 8/22/2007 1.0 U 5.0 U 1.0 U 5.0 U 0.50 U 0.75 U 0.75 U 0.50 U 2.5 U 1.0 U MW -09D 7/1/1987 GW -3 ND ND NR ND ND ND ND 25 NR ND MW -09D 12/1/1996 ND ND NR ND ND ND ND 79 NR 2.0 MW -09D 3/26/1997 ND ND NR ND ND ND ND 68 NR 2.7 MW -09D 6/24/1997 ND ND NR ND ND ND ND 53 NR 1.1 MW -09D 9/24/1997 ND ND NR ND ND ND ND 54 NR 1.8 MW -09D 12/11/1997 ND 24 NR ND ND ND ND 57 NR 1.8 MW -09D 3/24/1998 ND ND NR ND ND ND ND 100 NR ND MW -09D 6/22/1998 ND ND NR ND ND ND ND 100 NR ND MW -09D 9/25/1998 ND ND NR ND ND ND ND 31 NR ND MW -09D 12/16/1998 ND ND NR ND ND ND ND 18 NR ND MW -09D 12/10/1999 ND ND NR ND ND ND ND 69 NR 5.9 MW -09D 3/9/2000 ND ND NR ND ND ND ND 72 NR 9.3 MW -09D 6/13/2000 ND ND NR ND ND ND ND 59 NR 5.1 MW -09D 9/14/2000 ND ND NR ND ND ND ND 42 NR 4.5 MW -09D 12/13/2000 ND ND NR 5.3 ND ND ND 23 NR ND MW -09D 4/2/2001 ND ND NR ND ND ND ND 74 NR 9.1 MW -09D 12/19/2001 ND ND NR ND ND ND ND 9.5 NR ND MW -09D 2/20/2003 2.0 U IOU 2.0 U 5.0 U 2.0 U 2.0 U 2.0 U 140 2.0 U 9.0 MW -09D 10/14/2003 IOU 100 U IOU 20 U IOU IOU IOU 220 20 U 20 U MW -09D 1/28/2004 5.0 U 50 U 5.0 U IOU 5.0 U 5.0 U 5.0 U 74 IOU 2.0 U MW -09D 1/28/2004 5.0 U 50 U 5.0 U IOU 5.0 U 5.0 U 5.0 U 68 IOU 2.0 U MW -09D 10/19/2004 1.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 70 1.0 U 1.0 U MW -09D 4/21/2005 5.0 U 50 U 5.0 U IOU 5.0 U 5.0 U 5.0 U 210 5.0 U 5.0 U G:\PROJECTS\118210]9\08M and Menilornp\OdM 0.eporb\GabTabYaVAaA9lTabb2.ds 22 of 88 n �y n �1 M �J l� V Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works 1 r GAM0JELT6\11621039=M end_M,,ft,, g=M_R,p tsl TebW,N-9\Tebblft 23 of 88 L� Concentration (µ /L) Well Location ID Sample Date MCP Ground- water Classif- ication d C R Z c H 4 C 0 0 =c, A C 0 0 Ad O C d 0 0 u Q a R o i 0 a r U o U � � = v MCP UCL 100,000 100,000 100,000 1009000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 2-0-,0-0-0- -30,000 2-0,00-0 NL 50 000 10 000 1 NL 10,000 50 000 MW -09S 7/1/1987 ND ND ND ND NR ND ND NR NR ND MW -09S 12/1/1996 ND ND ND ND NR ND ND NR NR ND MW -09S 3/26/1997 ND ND ND ND NR ND ND NR NR ND MW -09S 6/24/1997 ND ND ND ND NR ND ND NR NR ND MW -09S 9/24/1997 ND ND ND ND NR ND ND NR NR ND MW -09S 12/11/1997 ND ND ND ND NR ND ND NR NR ND MW -09S 3/24/1998 ND 2.3 ND ND NR ND ND NR NR ND MW -09S 6/22/1998 ND 1.0 ND ND NR ND ND NR NR ND MW -09S 9/25/1998 ND ND ND ND NR ND ND NR NR ND MW -09S 12/16/1998 ND ND ND ND NR ND ND NR NR ND MW -09S 12/9/1999 GW ND 1.8 ND ND NR ND ND NR NR ND MW -09S 3/9/2000 ND ND ND ND NR ND ND NR NR ND MW -09S 6/13/2000 ND ND ND ND NR ND ND NR NR ND MW -09S 9/14/2000 -3 ND ND ND ND 50 U ND ND NR NR ND MW -09S 12/13/2000 ND ND ND ND 50 U ND ND NR NR ND MW -09S 4/2/2001 ND ND ND ND 50 U ND ND NR NR ND MW -09S 4/2/2001 ND ND ND ND 500 U * ND ND NR NR ND MW -09S 12/19/2001 1.1 2.6 ND ND 50 U ND ND NR NR ND MW -09S 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U 50 U * IOU 2.0 U NR 2.0 U 2.0 U MW -09S 10/14/2003 1.0 0.60 J 1.0 U 1.0 U 50 U * 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -09S 1/26/2004 3.0 1.0 1.0 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -09S 10/19/2004 1.3 1.0 U 0.53 J 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -09S 11/1/2005 11 5.3 J IOU IOU NR 500 U * IOU 20 U IOU 43 MW -09S 5/8/2006 2.8 1.0 U * 0.53 J 1.0 U NR 50 U * 1.0 U 2.0 U 1.0 U 1.0 U MW -09S 11/3/2006 0.83 J 1.0 U 1.0 U 1.0 U * NR 50U 1.0 U 2.0 U 1.0 U 1.0 U MW -09S 10/28/2007 0.54 J 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.0 U 1 r GAM0JELT6\11621039=M end_M,,ft,, g=M_R,p tsl TebW,N-9\Tebblft 23 of 88 L� Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration (µ /L) d � y C C L .t. O U e r d w ,�, `o A o o a c -1 3 3 F F .�` F F C U > MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50,000 50,000 50,000 30,000 4 000 50 000 5 000 NL 50 000 MW -09S 7/1/1987 GW -3 ND ND NR ND ND ND ND 87 NR ND MW -09S 12/1/1996 ND ND NR ND ND ND ND ND NR ND MW -09S 3/26/1997 ND ND NR ND ND ND ND ND NR ND MW -09S 6/24/1997 ND ND NR ND ND ND ND ND NR ND MW -09S 9/24/1997 ND ND NR ND ND ND ND ND NR ND MW -09S 12/11/1997 ND 34 NR ND ND ND ND ND NR ND MW -09S 3/24/1998 ND ND NR ND ND ND ND 1.9 NR ND MW -09S 6/22/1998 ND ND NR ND ND ND ND ND NR ND MW -09S 9/25/1998 ND ND NR ND ND ND ND ND NR ND MW -09S 12/16/1998 ND ND NR ND ND ND ND ND NR ND MW -09S 12/9/1999 ND ND NR ND ND ND ND ND NR ND MW -09S 3/9/2000 ND ND NR ND ND ND ND ND NR ND MW -09S 6/13/2000 ND ND NR ND ND ND ND ND NR ND MW -09S 9/14/2000 ND ND NR ND ND ND ND ND NR ND MW -09S 12/13/2000 ND ND NR 5.1 ND ND ND ND NR ND MW -09S 4/2/2001 ND ND NR ND ND ND ND ND NR ND MW -09S 4/2/2001 ND ND NR ND ND ND ND ND NR ND MW -095 12/19/2001 ND ND NR ND ND ND ND ND NR ND MW -09S 2/20/2003 2.0 U IOU 2.0 U 5.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U MW -09S 10/14/2003 1.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.0 U 2.0 U 2.0 U MW -09S 1/26/2004 1.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.0 U 2.0 U 0.30 U MW -09S 10/19/2004 1.0U IOU 1.0U 2.0U 1.0U 1.0U 1.0U 1.0U 1.0U 1.0U MW -09S 11/1/2005 6.9 J 100 U IOU 20 U IOU IOU IOU 220 IOU IOU MW -09S 5/8/2006 2.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U * 1.0 U MW -09S 11/3/2006 2.0U IOU 1.0U 2.0U 1.8 1.0U I.0U* 18 I.0U* 1.0U MW -09S 10/28/2007 2.0 U 10 U 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 0.98 J 1.0 U 0.50 U GAPROJECT6\124 of 88 n 1s U ri Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground -`moo water Classif- ication Concentration ( L) c � � Z C C C O Z L . � 0 0 o F v u u o R ,. ; 012 c V L Q c0 e 0 _ o L' U U s O y� u 1 u MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20,000 30,000 20,000 NL 50,000 10,000 NL 10,000 50,000 MW -IOD 7/1/1987 GW -3 ND 21 ND ND NR ND ND NR NR ND MW -]OD 12/24/1996 ND 2.3 1.5 ND NR ND ND NR NR 89 MW -10D 3/26/1997 ND 2.1 1.2 ND NR ND ND NR NR 80 MW -101) 6/24/1997 ND 1.7 ND ND NR ND ND NR NR 81 MW -10D 9/24/1997 ND ND ND ND NR ND ND NR NR 92 MW -10D 12/11/1997 ND 2.1 ND ND NR ND ND NR NR 95 MW -101) 3/24/1998 ND 2.2 ND ND NR ND ND NR NR 100 MW -101) 9/25/1998 ND 2.4 ND ND NR ND ND NR NR 120 MW-lOD 12/14/1998 ND 2.0 ND ND NR ND ND NR NR 100 MW -101) 12/9/1999 ND 1.8 1.7 ND NR ND ND NR NR 150 MW -10D 3/9/2000 ND ND ND ND NR ND ND NR NR 120 MW -101) 6/13/2000 ND 1.6 ND ND 250 U ND ND NR NR 150 MW -101 9/13/2000 ND ND ND ND 250 U ND ND NR NR 150 MW-lOD 12/12/2000 ND ND ND ND 50 U ND ND NR NR 340 MW -IOD 4/2/2001 ND ND ND ND 50 U * ND ND NR NR 240 MW -101) 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U 50U IOU 2.0 U NR 2.0 U 76 MW -IOD 7/10/2003 2.0U 2.0U 1.0U 2.0U 50U* IOU 2.0U 2.0U 2.0U 79 MW -101) 1/26/2004 5.0 U 5.0 U 5.0 U 5.0 U NR 250 U 5.0 U IOU 5.0 U 120 MW -101) 2/24/2005 9.6 5.0 U 5.0 U 5.0 U NR 250 U 5.0 U IOU 5.0 U 85 MW -]OD 5/8/2006 1.0 U 1.0 U * 1.0 U 1.0 U NR 50 U * 1.0 U 2.0 U 1.0 U 30 MW -IOD 11/2/2006 1.0 U 1.0 1.0 U 1.0 U NR 50 U * 1.0 U 2.0 U 1.0 U 20 MW -IOD 4/26/2007 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U * 1.0 U 2.0 U 1.0 U 12 MW -101) 10/24/2007 1.0 U 0.97 J 1.0 U 1.0 U NR 50U 1.0 U 2.0 U 1.0 U 21 4 G:1PR0JECTS111621959106M-end MonAonn9MM_R,pw 0,tTobk,W, %TebQ.A, 25 of 88 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water71 Classif- ication Concentration ( /L) w � d c d = � d � y v 3o _ U u v 0 °o d w e c A c e '> a _`o o a ? ,°, a a a E F F .`� F F C U > MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 -50-0-0-0- 50 000 50,0()0 30 000 4,000 50 000 -5,000 NL 50,000 MW -10D 7/1/1987 GW -3 ND ND NR ND ND ND 274 102 NR 498 AM- 101) 12/24/1996 ND ND NR ND ND ND ND 110 NR 29 MW -101) 3/26/1997 ND ND NR ND ND ND ND 95 NR 23 MW-lOD 6/24/1997 ND ND NR ND ND ND ND 97 NR 12 MW -101) 9/24/1997 ND ND NR ND ND ND ND 130 NR 19 MW -]OD 12/11/1997 ND 35 NR ND ND ND ND 130 NR 16 MW -101) 3/24/1998 ND ND NR ND ND ND ND 130 NR 14 MW -10D 9/25/1998 ND ND NR ND ND ND ND 200 NR 16 MW -10D 12/14/1998 ND ND NR ND ND ND ND 170 NR 16 MW -IOD 12/9/1999 ND ND NR ND ND ND ND 94 NR 26 MW -IOD 3/9/2000 ND ND NR ND ND ND ND 53 NR 9.9 MW -101) 6/13/2000 ND ND NR ND ND ND ND 44 NR 18 MW -10D 9/13/2000 ND ND NR ND ND ND ND 42 NR 8.5 MW -101) 12/12/2000 ND ND NR ND ND ND ND 65 NR 16 MW -10D 4/2/2001 ND ND NR ND ND ND ND 51 NR 22 MW -101) 2/20/2003 2.0U IOU 2.0U 5.0U 2.0U 2.0U 2.0U 2.0U 2.0U 2.0U MW -IOD 7/10/2003 2.0U IOU 2.0U 5.0U 2.0U 2.0U 2.0U 2.0U 2.0U 4.0 MW -101) 1/26/2004 5.0 U 50 U 5.0 U IOU 5.0 U 5.0 U 5.0 U 2.0 J IOU 6.0 MW -IOD 2/24/2005 5.0 U 50 U 5.0 U IOU 7.0 5.0 U 5.0 U 56 5.0 U 4.4 J MW -10D 5/8/2006 2.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 0.56 J 1.5 1.0 U * 1.0 U MW-lOD 11/2/2006 2.0U IOU* 1.0U 2.0U 1.0U* 1.0U 1.0U 6.5 1.0U 5.7 MW -IOD 4/26/2007 2.0U IOU* 1.0U 2.0U 1.0U 1.0U 1.0U 2.6 1.0 U* 1.0U MW -]OD 10/24/2007 2.0 U 10 U 1.0 U 2.0 U 1.0 U 1.0 U 0.41 J 4.0 1.0 U 4.5 G:%PRWECT6111621069\0BM ,nd_M,,K,,Mg\06M_Rp ftp t T�bb,0.091T.bM2.A, 26 of 88 If -1 �I r� L4 v r� L n u L L i_ 1) Lj L3 F1 L 1-.-I Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Wellwater Location ID Sample Date MCP Ground- Classif- ication Concentration (µ /L) 3 `o `o e R E r` e a e c -• �? q A q $ °� a U _ V u q �! v MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20 000 20 000 30 000 20 000NL 50 000 10 000 NL 10 000 50,000 MW -]OS 7/1/1987 GW -3 28 25 ND ND NR ND ND NR NR ND MW -JOS 12/24/1996 ND 3.2 3.3 ND NR ND ND NR NR 130 MW -JOS 3/26/1997 2.1 2.8 5.4 ND NR ND ND NR NR 88 MW-IOS 6/24/1997 ND 1.9 2.1 ND NR ND ND NR NR 82 MW-lOS 12/11/1997 ND 1.3 ND ND NR ND ND NR NR 3.1 MW -JOS 3/24/1998 1.0 2.1 1.9 ND 50 U ND ND NR NR 87 MW-IOS 9/25/1998 ND 4.0 4.1 ND 250 U ND ND NR NR 210 MW -]OS 12/14/1998 ND 2.7 ND ND 50 U ND ND NR NR 60 MW-IOS 4/2/2001 ND ND ND ND 50 U * ND ND NR NR 14 MW -JOS 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U 50 U * IOU 2.0 U NR 2.0 U 2.0 U MW -]OS 7/10/2003 2.0 U 2.0 U 1.0 U 2.0 U 50 U IOU 2.0 U 2.0 U 2.0 U 65 AM -10S 1/27/2004 1.0 U 1.0 1.0 U 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 12 MW -]OS 2/24/2005 19 5.0 U 5.0 U 5.0 U 250 U * 250 U 5.0 U 2.5 J 5.0 U 3.8 J MW-IOS 5/8/2006 1.0 U 0.52 J * 1.0 U 1.0 U NR 50 U * 1.0 U 2.0 U 1.0 U 5.3 MW -10S 11/3/2006 1.0 U 1.0 U 1.0 U 1.0 U * NR 50 U * 1.0 U 2.0 U 1.0 U 1.0 U MW -JOS 11/3/2006 1.0 U 1.0 U 1.0 U 1.0 U NR 50U 1.0 U 2.0 U 1.0 U 1.0 U MW -JOS 4/26/2007 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U * 1.0 U 2.0 U * 1.0 U 4.5 MW -]OS 4/26/2007 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U * 1.0 U 2.0 U 1.0 U 4.9 MW -]OS 10/24/2007 5.0 U 5.0 U 5.0 U 5.0 U NR 250 U 5.0 U IOU 5.0 U 5.0 U MW -111) 7/1/1987 GW -3 ND ND ND ND NR ND ND NR NR ND MW -11D 12/1/1996 ND ND ND ND NR ND ND NR NR ND MW -IID 12/11/1997 ND ND ND ND 50 U * ND ND NR NR ND MW-JJD 12/17/1998 ND ND ND ND 50 U * ND ND NR NR ND MW -I11) 12/16/19991 ND ND ND ND 50U I ND ND NR NR ND MW -11D 12/13/2000 ND ND ND ND NR ND ND NR NR ND MW -IID 12/19/2001 1.0 ND 1.6 ND NR ND ND NR NR 1.2 MW -111) 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U 50 U * IOU 2.0 U NR 2.0 U 2.0-U MW -IID 11/2/2006 1.0 U 1.0 U 1.0 U 1.0 U * 500 U 50 U 1.0 U 2.0 U 1.0 U 1.2 MW -111) 10/25/2007 0.42 J 1.0 U 1.1 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -11D 7/18/2008 1.0 U 1.0 U 1.4 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -IIS 7/1/1987 GW -3 ND ND ND ND NR ND ND NR NR ND MW -IIS 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U NR IOU 2:0 U NR 2.0 U 2.0 U MW -IIS 11/2/2006 1.0U 1.0U 1.0U 1.0U NR 50U* 1.0U 2.0U 1.0U 1.0U MW -IIS 7/18/2008 IOU IOU IOU IOU NR 500 U IOU 20 U IOU 10 U 1 G:%MWECTG11/621039108M_end ManXoring\OdM_Repor6\➢ariTebbzVAeN9lTabk2 tls 27 of 88 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( L) d � y v C y a d � d r u ? d C y p C p i Er- u W ` A °' a = Nt o o i , i J y i a d d E F F F• F y 'O A _U 9 MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 1 500 50 000 50,000 50,000 30,000 4,000 50,000 5 000 NL 50 000 MW -JOS 7/1/1987 GW -3 ND ND NR ND ND ND 355 215 NR 60 MW-IOS 12/24/1996 ND ND NR ND ND ND 2.6 62 NR 140 MW-IOS 3/26/1997 ND ND NR ND ND ND 2.1 100 NR 150 MW-IOS 6/24/1997 ND ND NR ND ND ND 1.5 36 NR 41 MW-IOS 12/11/1997 ND 28 NR ND ND ND ND 2.6 NR 1.4 MW-IOS 3/24/1998 ND ND NR ND ND ND 1.6 35 NR 39 MW-IOS 9/25/1998 ND ND NR ND ND ND 2.9 7.7 NR 140 MW-IOS 12/14/1998 ND ND NR ND ND ND ND 1.5 NR 28 MW-IOS 4/2/2001 ND ND NR ND ND ND ND 2.0 NR ND MW -]OS 2/20/2003 2.0 U IOU 2,0 U 5.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U MW-IOS 7/10/2003 2.0 U IOU 2.0 U 5.0 U 2.0 U 2.0 U 2.0 U 2.0 2.0 U 16 MW-IOS 1/27/2004 1.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 0.60 J 1.0 2.0 U 5.0 MW -JOS 2/24/2005 5.0 U 50 U 5.0 U IOU 9.0 5.0 U 5.0 U 97 5.0 U 10 MW-IOS 5/8/2006 2.0 U IOU 1.0 U 2.0 U 0.82 J 1.0 U 1.0 U 3.1 1.0 U * 6.9 MW -JOS 11/3/2006 2.0U IOU* 1.0U 2.0U 1.7 1.0U 1.0U* 17 1.0U 1.0U MW-IOS 11/3/20061 2.0 U IOU 1.0 U 2.0 U 1.9 *1.0 U 1.0 U 16 1.0 U * 1.0 U MW -JOS 4/26/2007 2.0U IOU* 1.0U 2.0U 0.67J 1.0U 1.0U 1.8 I.0U* 1.0U* MW-IOS 4/26/2007 2.0 U IOU* 1.0 U 2.0 U 0.65 J LOU 1.0 U 1.9 1.0 U * 1.0 U MW -JOS 10/24/2007 IOU 50 U 5.0 U IOU 12 5.0 U 5.0 U 11 5.0 U 2.2 J MW -111) 7/1/1987 GW -3 1 GW3 1 ND ND NR ND ND ND ND ND NR ND MW -111) 12/1/1996 ND ND NR ND ND ND ND ND NR ND MW -111) 12/11/1997 ND 31 NR ND ND ND ND ND NR ND MW -111) 12/17/1998 ND ND NR ND ND ND ND 3.0 NR ND MW -111) 12/16/1999 ND ND NR ND ND ND ND 3.8 NR ND MW -111) 12/13/2000 ND ND NR ND ND ND ND ND NR ND MW -111) 12/19/2001 ND ND NR ND 9.2 ND ND 21 NR ND MW -111) 2/20/2003 2.0 U IOU 2.0 U 5.0 U 2.0 U 2.0 U 2.0 U 3.0 2.0 U 2.0 U MW -111) 11/2/2006 2.0U IOU 1.0U 2.0U 6.7 1.0U 1.0U* 13 1.0U* 1.0U MW -111) 10/25/2007 2.0 U IOU 1.0 U 2.0 U 1.7 1.0 U 1.0 U 4.6 1.0 U 0.50 U MW -111) MW -11S 7/18/2008 7/1/1987 2.0 U IOU 1.0 U 2.0 U 1.0 1.0 U 1.0 U 3.9 1.0 U ND ND NR ND ND ND ND 95 NR 0.50 U ND MW-JIS 2/20/2003 2.0U IOU 2.0U 5.0U 2.0U 2.0U 2.0U 2.0U 2.0U 2.0U MW -IIS 11/2/2006 2.0U 10U* 1.0U 2.0U 1.0U* 1.0U 1.0U ILO U 1.0U 1.0U MW -11S 7/18/2008 20 U 100 U I IOU 20 U IOU IOU IOU 13 IOU 5.0 U GAPRWECT-1621639%06M_wd M,,k,hg=M Rep ftZ,MT,b%,W,, 91Tab62.A, 28 Of 88 n n 4 u n' ILa n L1 L► n La Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works G'.\PROJECTS\116310]9%O&M end Mllh,lilg1O&M_Rep t6 mTebbzVAaM7,bb2.& 29 of 88 I'� Concentration ( g/L) C 5 p t O 5 t O MCP 3 0 L ° Ground- u 3 0 _ o o c R u Well water v uF v o c e o o A Location Sample Classif- ID Date ication „ �. Q U U MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20,000 30 000 20 000 NL 50,000 10,000 NL 10,000 50,000 MW -12D 12/1/1996 GW -3 ND ND ND ND NR ND ND NR NR ND MW -12D 3/26/1997 ND ND ND ND NR ND ND NR NR ND MW -12D 6/24/1997 ND ND ND ND NR ND ND NR NR ND MW -12D 9/25/1997 ND ND ND ND NR ND ND NR NR ND MW -12D 12/15/1997 ND ND ND ND NR ND ND NR NR ND MW -121) 3/26/1998 ND ND ND ND NR ND ND NR NR ND MW -12D 6/29/1998 ND ND ND ND NR ND ND NR NR ND MW -12D 9/25/1998 ND ND ND ND NR ND ND NR NR ND MW -12D 12/17/1998 ND ND ND ND NR ND ND NR NR ND MW -12D 12/15/1999 ND ND ND ND NR ND ND NR NR ND MW -12D 3/9/2000 ND ND ND ND NR ND ND NR NR ND MW -1219 6/13/2000 ND ND ND ND 50 U ND ND NR NR ND MW -12D 9/13/2000 ND ND ND ND 50 U ND ND NR' NR ND MW -1219 12/11/2000 ND ND ND ND NR ND ND NR NR ND MW -12D 3/12/2001 ND ND ND ND NR ND ND NR NR ND MW -121) 12/12/2001 ND ND ND ND NR ND ND NR NR ND MW-I2D 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U NR IOU 4.0 NR 2.0 U 2.0 U MW -12D 10/14/2003 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U 0.70 J 2.0 U 1.0 U 0.70 J MW -12D 7/17/2008 1.0 U 1.0 U 1.0 U 1.0 U NR 50U 1.0 U 2.0 U 1.0 U 1.0 U G'.\PROJECTS\116310]9%O&M end Mllh,lilg1O&M_Rep t6 mTebbzVAaM7,bb2.& 29 of 88 I'� Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works GAPROJECTS111S210S MM_Ild Mmk,k g\Mh R,poro UT�bW,%MaM9%Ta 2Ad 30 of 88 Concentration ( g/L) w C d O L y R t MCP U 5 °o C Ground- a d c ' A d a Well water i, i. a, r 'i _`o U Location Sample Classif- a A � r � �C o r �71 ID Date ication MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50,000 50,000 50 000 30 000 4,000 50,000 5,000 NL 50 000 MW -12D 12/1/1996 GW -3 ND ND NR ND ND ND ND ND NR ND MW -12D 3/26/1997 ND ND NR ND ND ND ND ND NR ND MW -12D 6/24/1997 ND ND NR ND ND ND ND ND NR ND MW -12D 9/25/1997 ND ND NR ND ND ND ND ND NR ND MW -12D 12/15/1997 ND 33 NR ND ND ND ND ND NR ND MW -121) 3/26/1998 ND ND NR ND ND ND ND ND NR ND MW -12D 6/29/1998 ND ND NR ND ND ND ND ND NR ND MW -121) 9/25/1998 ND ND NR ND ND ND ND ND NR ND MW -12D 12/17/1998 ND ND NR ND ND ND ND ND NR ND MW -1213 12/15/1999 ND ND NR ND ND ND ND ND NR ND MW -1213 3/9/2000 ND ND NR ND ND ND ND ND NR ND MW -12D 6/13/2000 ND ND NR ND ND ND ND ND NR ND MW -12D 9/13/2000 ND ND NR ND ND ND ND ND NR ND MW -121) 12/11/2000 ND ND NR 6.6 ND ND ND ND NR ND MW -12D 3/12/2001 ND ND NR ND ND ND ND ND NR ND MW -12D 12/12/2001 ND ND NR ND ND ND ND ND NR ND MW -121) 2/20/2003 2.0 U IOU 2.0 U 5.0 U 2.0 U 2.0 U 2.0 U 2.0 2.0 U 2.0 U MW -12D 10/14/2003 1.0U IOU 1.0U 2.0U 1.0U 1.0U 1.0U I.OJV 2.0U 2.0U MW -12D 7/17/2008 2.0U IOU 1.0U 2.0U 1.0U 1.0U 1.0U 1.0U 1.0U 0.50U GAPROJECTS111S210S MM_Ild Mmk,k g\Mh R,poro UT�bW,%MaM9%Ta 2Ad 30 of 88 n i V ri L n i-4 h Ly r U C Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works 1 G'.\PRWECM11-03MO&M a,d Monk,mgMM_ReparhVatatebkaW, %Tabk2.A, 31 of 88 Lj Concentration (µg/L) R V R y MCP o d u e 0 Ground- p Well water F� v u u o a a 0 o A Location Sample Classif- ID Date kation N ., - N O 0.i U U v MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20,000 30,000 20,000 NL 50,000 10,000 NL 10,000 50,000 MW -12S 12/1/1996 GW -3 ND ND ND ND NR ND ND NR NR 2.7 MW -12S 3/26/1997 ND ND ND ND NR ND ND NR NR 2.4 MW -12S 6/24/1997 ND ND ND ND NR ND ND NR NR 2.0 MW -12S 9/25/1997 ND ND ND ND NR ND ND NR NR 1.7 MW -12S 12/15/1997 ND ND ND ND NR ND ND NR NR 2.1 MW -12S 3/25/1998 ND ND ND ND NR ND ND NR NR 1.7 MW -12S 6/29/1998 ND ND ND ND NR ND ND NR NR 1.7 MW -12S 9/25/1998 ND 1.4 ND ND NR ND ND NR NR 1.9 MW -12S 12/17/1998 ND 4.0 ND ND NR ND ND NR NR 1.9 MW -12S 12/15/1999 ND 4.9 ND ND NR ND ND NR NR 1.2 MW -12S 3/9/2000 ND 5.0 ND ND NR ND ND NR NR 1.5 MW -12S 3/9/2000 ND 5.8 ND ND NR ND ND NR NR 1.2 MW -12S 6/13/2000 ND 2.5 ND ND 50 U ND ND NR NR ND MW -12S 9/13/2000 ND 2.4 ND ND 500 U ND ND NR NR 1.1 MW -12S 12/11/2000 ND 2.2 ND ND NR ND ND NR NR 1.2 MW -12S 3/12/2001 ND 2.1 ND ND NR ND ND NR NR ND MW -12S 12/12/2001 ND 3.0 ND ND NR ND ND NR NR 0.99 MW -12S 2/20/2003 2.0 U 3.0 1.0 U 2.0 U NR IOU 2.0 U NR 2.0 U 2.0 U MW -12S 10/14/2003 1.0 U 3.0 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 0.70 J MW -12S 7/17/2008 10 U IOU IOU IOU NR 500 U 10 U 20 U 10 U 7.5 J 1 G'.\PRWECM11-03MO&M a,d Monk,mgMM_ReparhVatatebkaW, %Tabk2.A, 31 of 88 Lj Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works GAPROJECTW IRI D39109M me MontorNOIOEM_Rpm M,l T�bk,N,,091Tab62.ds 32 of 88 Concentration (µ /L) C � O d MCP U u 0 d Ground- C y i A d C o Well water Location Sample Classif- s L a ID Date ication E F F b F F > MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50 000 50 000 50 000 30 000 4 000 50 000 5 000 NL 50 000 MW -12S 12/1/1996 GW -3 ND ND NR ND ND ND ND 3.8 NR ND MW -12S 3/26/1997 ND ND NR ND ND ND ND 3.1 NR ND MW -12S 6/24/1997 ND ND NR ND ND ND ND 7.7 NR ND MW -12S 9/25/1997 ND ND NR ND ND ND ND 4.0 NR ND MW -12S 12/15/1997 ND 75 NR ND ND ND ND 1.6 NR ND MW -12S 3/25/1998 ND ND NR ND ND ND ND 4.5 NR ND MW -12S 6/29/1998 ND ND NR ND ND ND ND 4.1 NR ND MW -12S 9/25/1998 ND ND NR ND ND ND ND 2.9 NR ND MW -12S 12/17/1998 ND ND NR ND ND ND ND 1.8 NR ND MW -12S 12/15/1999 ND ND NR ND ND ND ND 1.5 NR ND MW -12S 3/9/2000 ND ND NR ND ND ND ND 1.1 NR ND MW -12S 3/9/2000 ND ND NR ND ND ND ND 1.2 NR ND MW -12S 6/13/2000 ND ND NR ND ND ND ND 1.3 NR ND MW -12S 9/13/2000 ND ND NR ND ND ND ND 1.8 NR ND MW -12S 12/11/2000 ND ND NR 7.2 ND ND ND 1.6 NR ND MW -12S 3/12/2001 ND ND NR ND ND ND ND 1.8 NR ND MW -12S 12/12/2001 ND ND NR ND ND ND ND 0.96 NR ND MW -12S 2/20/2003 2.0 U IOU 3.0 5.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U MW -128 10/14/2003 0 U 10U 4.0 2.0 U 1.0 U 1.0 U 1.0 U 0.70 J 2.0 U 2.0 U 7/17/2008 H2'0U 100 U 89 20 U IOU IOU IOU IOU IOU 5.0 U GAPROJECTW IRI D39109M me MontorNOIOEM_Rpm M,l T�bk,N,,091Tab62.ds 32 of 88 n h n I l _1 u IN f L_r n Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works l� G1PRWELTS\116210]91G8M end Monlorinp108M_RepoM1SNataTahbsVAaN9lTabk2.ds 33 of 88 Concentration ( g/L) Well Location ID Sample Date MCP Ground- waterF Classif- ication C r O O - = .0 3 u A C _ v A C 3 u A R o A a° d c e r 0 U € O = U � � L u •; v MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20,000 30,000 20,000 NL 50,000 10,000 NL 10,000 50,000 MW -13D 12/1/1996 ND ND ND ND NR ND ND NR NR 48 MW -13D 3/26/1997 ND ND ND ND NR ND ND NR NR 50 MW -13D 6/24/1997 ND ND ND ND NR ND ND NR NR 41 MW -13D 9/25/1997 ND ND ND ND NR ND ND NR NR 44 MW -13D 12/15/1997 ND ND ND ND NR ND ND NR NR 40 MW -13D 3/26/1998 ND ND ND ND NR ND ND NR NR 36 MW -131) 6/30/1998 ND ND ND ND NR ND ND NR NR 43 MW -13D 9/25/1998 ND ND ND ND NR ND ND NR NR 9.2 MW -13D 12/17/1998 ND ND ND ND NR ND ND NR NR 46 MW -131) 12/15/1999 ND ND ND ND 2,500 U ND ND NR NR 62 MW -13D 9/13/2000 GW -3 ND ND ND ND 500 U ND ND NR NR 180 MW -13D 12/13/2000 ND ND ND ND 1,000 U ND ND NR NR 90 MW -13D 3/12/2001 ND ND ND ND 1,000 U * ND ND NR NR 130 MW -13D 12/12/2001 ND ND ND ND 500 U * ND ND NR NR 130 MW -13D 2/20/2003 IOU IOU 5.0 U IOU 500 U * 50 U IOU NR IOU 140 MW -13D 10/14/2003 50 U 50 U 50 U 50 U 500 U 2,500 U 50 U 100 U 50 U 620 MW -13D 10/20/2004 IOU 10 U IOU IOU NR 500 U IOU 20 U IOU 210 MW -13D 4/21/2005 20 U 20 U 20 U 20 U NR 1,000 U 20 U 40 U 20 U 620 MW -13D 11/2/2005 20 U 20 U 20 U 20 U NR 1,000 U * 20 U 40U 20 U 790 MW -13D 11/3/2006 IOU IOU IOU IOU NR 500 U * IOU 20 U IOU 520 MW -131) 10/26/2007 IOU IOU IOU 10 U NR 500 U IOU 20 U IOU 470 MW -13D 7/17/2008 10 U 10 U 10 U 10 U NR 500 U IOU 20 U IOU 650 l� G1PRWELTS\116210]91G8M end Monlorinp108M_RepoM1SNataTahbsVAaN9lTabk2.ds 33 of 88 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works G;"OJECTS\134 of 88 Concentration ( g/L) u 00 a ° u MCP SC r U u u Ground- a � u Well water a u Location Sample Classif- a a u u ID Date ication F F F 1~ > MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 509000 NL 1009000 MCP GW -2 99000 50,000 50,000 10,000 50 89000 90 30 NL 2 MCP GW -3 500 50,000 50,000 50,000 30,000 4,000 50,000 5 000 NL 50 000 MW -13D 12/1/1996 GW -3 ND ND NR ND ND ND ND 1,400 NR ND MW -13D 3/26/1997 ND ND NR ND ND ND ND 1,400 NR ND MW -13D 6/24/1997 ND ND NR ND ND ND ND 1,300 NR ND MW -13D 9/25/1997 ND ND NR ND ND ND ND 1,500 NR ND MW -13D 12/15/1997 ND 26 NR ND ND ND ND 1,100 NR ND MW -13D 3/26/1998 ND ND NR ND ND ND ND 1,000 NR ND MW -13D 6/30/1998 ND ND NR ND ND ND ND 1,100 NR ND MW -13D 9/25/1998 ND ND NR ND ND ND ND 210 NR ND MW -13D 12/17/1998 ND ND NR ND ND ND ND 1,100 NR ND MW -13D 12/15/1999 ND ND NR ND ND ND ND 930 NR ND MW -13D 9/13/2000 ND ND NR ND ND ND ND 880 NR ND MW -13D 12/13/2000 ND ND NR ND ND ND ND 800 NR ND MW -13D 3/12/2001 ND ND NR ND ND ND 16 930 NR ND MW -13D 12/12/2001 ND ND NR ND ND ND ND 200 NR ND MW -13D 2/20/2003 IOU 50 U IOU 20 U IOU IOU 20 1,400 IOU IOU MW -13D 10/14/2003 50 U 500 U 50 U 100 U 50 U 50 U 50 U 50 U 100 U 100 U MW -13D 10/20/2004 IOU 100 U IOU 20 U 10 U IOU IOU 120 IOU IOU MW -13D 4/21/2005 20 U 200 U 20 U 40 U 20 U 20 U 15 J 23 20 U 20 U MW -13D 11/2/2005 40 U 200 U 20 U 40 U 20 U 20 U 24 51 20 U 20 U MW -13D 11/3/2006 20 U 100 U * 10 U 20 U IOU* IOU 19 IOU IOU 70 MW -13D 10/26/2007 20 U 100 U IOU 20 U IOU IOU 26 3.5 J IOU 110 MW -13D 7/17/2008 20 U 100 U 10 U 20 U IOU IOU 22 12 IOU 55 G;"OJECTS\134 of 88 `4 F) Li Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( g/L) � C O 3 � F .. p C d d d o 0 o p R u u - e A �? O La .� N 4 ,. .. < v .0 p C o e o o 00 U U C � � G .0 MCP UCL 10Q000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20 000 30 000 20,000 NL 50,000 10,000 NL 10 000 50 000 MW -13S 12/1/1996 ND ND ND ND NR ND ND NR NR 74 MW -13S 3/26/1997 ND ND ND ND NR ND ND NR NR 87 MW -13S 6/24/1997 ND ND ND ND NR ND ND NR NR 87 MW -13S 9/25/1997 ND ND ND ND NR ND ND NR NR 86 MW -13S 12/15/1997 ND ND ND ND NR ND ND NR NR 77 MW -13S 3/26/1998 ND ND ND ND NR ND ND NR NR 82 MW -13S 6/29/1998 ND ND ND ND NR ND ND NR NR 120 MW -13S 9/25/1998 ND ND ND ND NR ND ND NR NR 99 MW -13S 12/17/1998 ND ND ND ND NR ND ND NR NR 95 MW -13S 12/15/1999 ND ND ND ND NR ND ND NR NR 100 MW -13S 3/9/2000 GW -3 ND ND ND ND NR ND ND NR NR 88 MW -13S 6/13/2000 ND ND ND ND 5,000 U ND ND NR NR 70 MW -13S 9/13/2000 ND ND ND ND 5,000 U ND ND NR NR 97 MW -13S 12/13/2000 ND ND ND ND 1,200 U ND ND NR NR 9.3 MW -13S 3/12/2001 ND ND ND ND 2,500 U ND ND NR NR 91 MW -13S 12/12/2001 ND ND ND ND 2,500 U * ND ND NR NR 120 MW -13S 2/20/2003 IOU IOU 5.0 U IOU 5,000 U * 50 U IOU NR IOU 160 MW -13S 10/14/2003 100 U 100 U 100 U 100 U 5,000 U * 5,000 U 100 U 200 U 100 U 68 J MW -13S 4/28/2004 100 U 100 U 100 U 100 U 5,000 U 5,000 U 100 U 200 U 100 U 250 MW -13S 10/20/2004 25 U 25 U 25 U 25 U NR 1,200 U 25 U 50 U 25 U 110 MW -13S 4/21/2005 50 U 50 U 50 U 50 U NR 2,500 U 50 U 100 U 50 U 210 MW -13S 11/2/2005 50 U 50 U 50 U 50 U NR 2,500 U * 50 U 100 U 50 U 100 MW -13S 11/2/2006 100 U 100 U 100 U 100 U NR 5,000 U * 100 U 200 U 100 U 100 MW -13S 10/26/2007 100 U 100 U 100 U 100 U NR 5,000 U 1 100 U 200 U 100 U 310 MW -13S 1 7/17/2008 100 U 100 U 100 U 100 U NR 5,000 U 100 U 200 U 100 U 200 nGAPRNECTS111621039\08M_entl Mon�tornplGBM_RaporlslGabTeEksVAaN81TaEb3.tls 35 of 88 11; ' l_ ] Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( g/L) d a L t y y F y O � O t = y O 151 o e v u F .R`. F F MCP UCL 100,000 100,000 1009000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 89000 90 30 NL 2 MCP GW -3 500 50,000 50,000 50,000 30,000 4 000 50,000 5,000 NL 50 000 MW -13S 12/1/1996 GW -3 ND ND NR ND ND ND ND 1,100 NR ND MW -13S 3/26/1997 ND ND NR ND ND ND ND 1,100 NR ND MW -13S 6/24/1997 ND ND NR ND ND ND ND 1,100 NR ND MW -13S 9/25/1997 ND ND NR ND ND ND ND 880 NR ND MW -13S 12/15/1997 ND 30 NR ND ND ND ND 790 NR ND MW -13S 3/26/1998 ND ND NR ND ND ND ND 940 NR ND MW -13S 6/29/1998 ND ND NR ND ND ND ND 1,300 NR ND MW -13S 9/25/1998 ND ND NR ND ND ND ND 790 NR ND MW -13S 12/17/1998 ND ND NR ND ND ND ND 1,200 NR ND MW -13S 12/15/1999 ND ND NR ND ND ND ND 1,400 NR ND MW -13S 3/9/2000 ND ND NR ND ND ND ND 2,000 NR ND MW -13S 6/13/2000 ND ND NR ND ND ND ND 1,000 NR ND MW -13S 9/13/2000 ND ND NR ND ND ND ND 1,000 NR ND MW -13S 12/13/2000 ND ND NR ND ND ND ND 94 NR ND MW -13S 3/12/2001 ND ND NR ND ND ND ND 1,400 NR ND MW -13S 12/12/2001 ND ND NR ND ND ND ND 1,400 NR ND MW -13S 2/20/2003 IOU 50 U IOU 20 U IOU IOU IOU 2,100 IOU IOU MW -13S 10/14/2003 100 U 1,000 U 100 U 200 U 100 U 100 U 100 U 2,000 200 U 200 U MW -13S 4/28/2004 100 U 1,000 U 100 U 200 U 100 U 100 U 100 U 2,500 100 U 100 U MW -13S 10/20/2004 25 U 250 U 25 U 50 U 25 U 25 U 25 U 3,000 25 U 25 U MW -13S 4/21/2005 50 U 500 U 50 U 100 U 50 U 50 U 50 U 3,000 50 U 50 U MW -13S 11/2/2005 100 U 500 U 50 U 100 U 50 U 50 U 50 U 1,700 50 U 50 U MW -13S 11/2/2006 200 U 1,000 U * 100 U 200 U 100 U * 100 U 100 U 21500 100 U 100 U MW -13S 10/26/2007 200 U 1,000 U 100 U 150 J 100 U 100 U 100 U 4,100 100 U 50 U MW -13S 7/17/2008 200 U 1,000 U 100 U 200 U 100 U 100 U 100 U 3,100 100 U 50 U G:%PRWEOT6\11621039%MM and M..k.,MgIO&M Rapo Det T.bWsW.A9\Te 62,As 36 of 88 ;1 G Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works G TROJECTV 1621039\O&M and_M,,i,,I,g\O6M R,p ft a Tebk,W,e MT,bW.As 37 of 88 Concentration (g/L) Well Location ID Sample Date MCP Ground- water Classif- I ication d C y y A R o O 0 R o _ � a ,a U U d O d C s 'u MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 509000 2,000 NL 400 100 MCP GW -3 20,000 20,000 30,000 20,000 NL 50,000 10,000 NL 10,000 50,000 MW -14S 12/1/1996 ND ND ND ND NR ND ND NR NR 29,000 MW -14S 3/26/1997 ND ND ND ND NR ND ND NR NR 29,000 MW -14S 6/24/1997 ND ND ND ND NR ND ND NR NR 22,000 MW -14S 9/25/1997 ND ND ND ND NR ND ND NR NR 21,000 MW -14S 12/12/1997 ND ND ND ND NR ND ND NR NR 20,000 MW -14S 3/27/1998 ND ND ND ND NR ND ND NR NR 20,000 MW -14S 6/29/1998 ND ND ND ND NR ND ND NR NR 19,000 MW -14S 9/25/1998 ND ND ND ND NR ND ND NR NR 22,000 MW -14S 12/17/1998 ND ND ND ND NR ND ND NR NR 18,000 MW -14S 12/8/1999 ND ND ND ND NR ND ND NR NR 4,900 MW -14S 3/10/2000 ND ND ND ND NR ND ND NR NR 6,500 MW -14S 3/10/2000 GW -2 ND ND ND ND NR ND ND NR NR 6,500 MW -14S 4/17/2000 ND ND ND ND NR ND ND NR NR 11,000 MW -14S 6/12/2000 ND ND ND ND NR ND ND NR NR 11,000 MW -14S 9/11/2000 ND ND ND ND NR ND ND NR NR 6,300 MW -14S 12/12/2000 ND ND ND ND NR ND ND NR NR 8,800 MW -14S 3/12/2001 ND ND ND ND 500,000 U ND ND NR NR 6,600 MW -14S 12/11/2001 ND ND ND ND 500 U ND ND NR NR 11,000 MW -14S 7/2/2002 ND ND ND ND 1,300 U ND ND NR NR 14,000 MW -14S 10/8/2002 5,000 U 7,500 U 5,000 U 5,000 U 250 U * 50,000 U 5,000 U NR 7,500 U 28,000 MW -14S 11/20/2002 5,000 U 7,500 U 5,000 U 5,000 U 500 U 50,000 U 5,000 U NR 7,500 U 15,000 MW -14S 2/20/2003 1,000 U 1,000 U 500 U 1,000 U NR 5,000 U 1,000 U NR 1,000 U 16,000 MW -14S 10/14/2003 10,000 U 10,000 U 10,000 U 10,000 U NR 500,000 U 10,000 U 20,000 U 10,000 U 12,000 MW -14S 11/2/2006 IOU IOU IOU IOU NR 500 U IOU 20 U IOU 12 MW -14S 4/26/2007 25 U 25 U 25 U 25 U NR 1,300 U * 25 U 50 U 25 U 25 U MW -14S 9/20/2007 2.6 J 5.0 U 5.0 U 5.0 U NR 250 U 5.0 U IOU 5.0 U 5.0 U MW -14S 7/17/2008 IOU IOU* IOU IOU NR 500 U IOU 20 U IOU IOU G TROJECTV 1621039\O&M and_M,,i,,I,g\O6M R,p ft a Tebk,W,e MT,bW.As 37 of 88 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works n w G:\PROJECT511162103MM wn M.ak,, gG 06M F�pw6lD TabW,kMaNBITabb2.ds 40 of 88 Concentration ( /L) u d u C � C a°. C7 b d O d MCP i U o C Ground- w o Well water a � = Location Sample Classif- ID Date ication MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000tND 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50,000 50,000 30 000 4 000 50 000 5 000 NL 50 000 MW -151) 8/7/1998 GW -3 ND NR ND ND 14 ND 660 NR ND MW -15D 9/25/1998 ND NR ND ND ND ND 720 NR ND MW -15D 12/16/1998 ND NR ND ND ND ND 610 NR ND MW -15D 12/8/1999 ND ND NR ND ND ND ND 2,900 NR ND MW -151) 3/8/2000 ND ND NR ND ND 72 ND 3,800 NR ND MW -15D 6/13/2000 ND ND NR ND ND 110 ND 6,900 NR ND MW -151) 9/11/2000 ND ND NR ND ND ND ND 7,800 NR ND MW -15D 9/11/2000 ND ND NR ND ND ND ND 9,300 NR ND MW -15D 12/12/2000 ND ND NR ND ND ND ND 8,700 NR ND MW -15D 4/2/2001 ND ND NR ND ND 200 ND 21,000 NR I ND MW -15D 12/11/2001 ND ND NR ND ND ND ND 18,000 NR ND MW -15D 6/27/2002 ND ND NR ND ND ND ND 52,000 NR ND MW -15D 2/20/2003 100 U 500 U 100 U 200 U 100 U 100 200 14,000 100 U 100 U MW -15D 10/14/2003 100 U 1,000 U 100 U 200 U 100 U 100 U 55 J 930 200 U 200 U MW -15D 4/28/2004 2,000 U 20,000 U 2,000 U 4,000 U 2,000 U 1,400 J 2,000 U 110,000 2,000 U 2,000 U MW -15D 10/4/2004 2,000 U 20,000 U 2,000 U 4,000 U 2,000 U 1,200 J 2,000 U 110,000 2,000 U 2,000 U MW -15D 10/19/2004 500 U 5,000 U 500 U 1,000 U 500 U 1,500 500 U 130,000 500 U 500 U MW -15D 10/19/2004 500 U 5,000 U 500 U 1,000 U 500 U 1,500 500 U 140,000 500 U 500 U MW -15D 12/29/2004 2,000 U 20,000 U 2,000 U 4,000 U 2,000 U 1,500 J 2,000 U 140,000 2,000 U 2,000 U MW -151) 4/6/2005 2,000 U 20,000 U 2,000 U 4,000 U 2,000 U 2,000 2,000 U 120,000 2,000 U 2,000 U MW -15D 6/30/2005 1,600 J 20,000 U 2,000 U 4,000 U 2,000 U 3,300 2,000 U 110,000 2,000 U 2,000 U MW -15D 11/2/2005 100 U 500 U 50 U 100 U 50 U 220 50 U 2,600 50 U 50 U MW -15D 5/8/2006 5,000 U 25,000 U 2,500 U 1 6,700 2,500 U 2,100 J 2,500 U 110,000 2,500 U * 2,500 U MW -15D 4/26/2007 1,000 U 5,000 U * 500 U 1,000 U 500 U 500 U 500 U 40,000 500 U * 500 U MW -15D 9/20/2007 5,000 U 25,000 U 2,500 U 5,000 U 2,500 U 2,500 U 2,500 U 140,000 2,500 U 1,300 U MW -15D 3/31/2008 5,000 U 25,000 U * 2,500 U 5,000 U 2,500 U 610 J 2,500 U 120,000 2,500 U 1,200 U n w G:\PROJECT511162103MM wn M.ak,, gG 06M F�pw6lD TabW,kMaNBITabb2.ds 40 of 88 u 0 G Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date 1 MCP Ground- waterA Classif- ication Concentration ( /L) v C d Z C F u44 o c Q co U U � y ` u MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20,000 30,000 20,000 NL 50,000 10,000 NL 10,000 50,000 MW -15S 8/7/1998 GW -3 ND ND ND ND NR ND ND NR NR ND MW -15S 9/25/1998 ND ND ND ND NR ND ND NR NR 68 MW -15S 12/16/1998 ND ND ND ND NR ND ND NR NR ND MW -15S 12/8/1999 ND ND ND ND NR ND ND NR NR ND MW -15S 3/8/2000 ND ND ND ND NR ND ND NR NR 28 MW -15S 6/13/2000 ND ND ND ND NR ND ND NR NR 18 MW -15S 9/11/2000 ND ND ND ND 500 U ND ND NR NR 14 MW -15S 12/12/2000 ND ND ND ND 50 U ND ND NR NR 17 MW -15S 3/12/2001 ND ND ND ND 250 U ND ND NR NR 11 MW -15S 12/11/2001 ND ND ND ND 250 U ND ND NR NR 19 MW -15S 6/27/2002 ND ND ND ND 250 U ND 7.6 NR NR 11 MW -15S 2/20/2003 2.0 U 2.0 U 1.0 U 2.91L 500 U IOU 2.0 U NR 2.0 U 9.0 MW -15S 10/14/2003 IOU IOU IOU IOU 50 U 500 U IOU 20 U IOU 8.0 J MW -15S 10/19/2004 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.O 1.0 U 0.98 J MW -15S 4/21/2005 .0 5.0 U 5.0 U 5.0 U 5.0 U NR 250 U 5.0 U IOU 5.0 U 4.2 J MW -15S 4/21/2005 5.0 U 5.0 U 5.0 U 5.0 U NR 250 U 5.0 U IOU 5.0 U 4.3 J MW -15S 11/1/2005 5.0U 5.0U 5.0U 5.0 U- NR 250 U5.0U IOU 5.0U 2.7J MW -15S 11/2/2006 IOU IOU IOU IOU NR 500 U IOU 20U IOU IOU MW -15S 10/28/2007 1 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.6 MW -16 8/7/1998 GW -3 ND ND ND ND NR ND ND NR NR ND MW -16 9/25/1998 ND ND ND ND NR ND ND NR NR ND MW -16 12/16/1998 ND ND ND ND NR ND ND NR NR ND MW -16 12/8/1999 ND ND ND ND NR ND ND NR NR ND MW -16 3/8/2000 ND ND ND ND NR ND ND NR NR ND MW -16 6/13/2000 ND ND ND ND NR ND ND NR NR ND MW -16 9/13/2000 ND ND ND ND NR ND ND NR NR ND MW -16 9/13/2000 ND ND ND ND NR ND ND NR NR ND MW -16 12/11/2000 ND ND ND ND NR ND ND NR NR ND MW -16 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U NR IOU 2.0 U NR 2.0 U 2.0 U G:\PRQIECTG\116]1939\06M end_Monborbp\08M Repor6\DepTabbsVAeN9lTabb].ds 41 of 88 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date 1 MCP Ground - water Classif- ication Concentration (It/L) d � d � c r 2 059 A c a - u = = E F F F F e a U MCP UCL 100,000 100,000 100,000 1009000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50 000 50,000 50,000 30 000 4,000 50,000 5,000 NL 50 000 MW -20 8/7/1998 GW -2 ND ND NR ND ND ND 200 U 20,000 NR ND MW -20 9/25/1998 ND ND NR ND ND 610 ND 22,000 NR ND MW -20 12/15/1998 ND ND NR ND ND 580 ND 24,000 NR ND MW -20 12/13/1999 ND ND NR ND ND ND I ND 15,000 NR ND MW -20 3/13/2000 ND ND NR ND ND ND ND 18,000 NR ND MW -20 6/13/2000 ND ND NR 1,900 ND ND ND 13,000 NR ND MW -20 12/14/2000 ND ND NR ND ND ND ND 1,200 NR ND MW -20 2/20/2003 100 U 500 U 100 U 200 U 100 U 100 U ND 22,000 100 U 100 U MW -20 10/14/2003 1,000 U 10,000 U 1,000 U 2,000 U 1,000 U 1,000 U 100 U 16,000 2,000 U 2,000 U MW -20 7/15/2004 50 U 500 U 50 U 100 U 50 U 50 U 1,000 U 3,700 50 U 50 U MW -20 10/20/2004 100 U 1,000 U 100 U 200 U 51 J 100 U 50 U 4,900 100 U 100 U MW -20 10/20/2004 100 U 1,000 U 100 U 200 U 100 U 100 U 100 U 4,600 100 U 100 U MW -20 11/2/2005 200 U 1,000 U 100 U 200 U 100 U 100 U 100 U 2,200 100 U 100 U MW -20 5/9/2006 100 U 500 U 50 U 100 U 50 U 50 U 100 U 3,200 50 U 50 U MW -20 5/9/2006 100 U 500 U 50 U 50 J 50 U 50 U 50 U 3,200 50 U 50 U MW -21 12/8/1999 GW -3 ND ND NR ND ND 12,000 50 U 320,000 NR ND MW -21 3/9/2000 ND ND NR ND ND 10,000 ND 340,000 NR ND MW -21 4/14/2000 ND ND NR ND ND 14,000 ND 540,000 NR I ND MW -21 6/12/2000 ND ND NR ND ND 18,000 ND 610,000 NR ND MW -21 9/11/2000 ND ND NR ND ND 13,000 ND 510,000 NR ND MW -21 12/12/2000 ND ND NR ND ND 17,000 ND 610,000 NR ND MW -21 2/20/2003 2,000 U 10,000 U 2,000 U 5,000 U 2,000 U 10,000 ND 470,000 2,000 U 2,000 U MW -21 10/15/2003 10,000 U 100,000 U 10,000 U 20,000 U 10,000 U 9,200 J 2,000 U 330,000 20,000 U 20,000 U MW -21 10/15/2003 10,000 U 100,000 U 10,000 U 20,000 U 10,000 U 9,600 J 10,000 U 350,000 20,000 U 20,000 U MW -21 4/28/2004 10,000 U 100,000 U 10,000 U 20,000 U 10,000 U 10,000 U 10,000 U 160,000 10,000 U 10,000 U MW -21 4/28/2004 10,000 U 100,000 U 10,000 U 20,000 U 10,000 U 10,000 U 10,000 U 190,000 10,000 U 10,000 U MW -21 8/9/2004 10,000 U 100,000 U 10,000 U 20,000 U 10,000 U 10,000 U 10,000 U 1 170,000 10,000 U 10,000 U MW -21 10/4/2004 5,000 U 50,000 U 5,000 U 10,000 U 5,000 U 4,000 J 10,000 U 200,000 5,000 U 5,000 U MW -21 12/16/2004 5,000 U 50,000 U 5,000 U 10,000 U 5,000 U 4,500 J 5,000 U 180,000 5,000 U 5,000 U GAPROJECT5111621039\O8M and Mmk,,ng\O&M_RportslD Tabb,WaN91TabM2.A, 46 of 88 F-, Table 2 Historical Groundwater Analytical Results for VOCs (gg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( g/L) d C Z p d � y R Y 00 c u u F A A A D .� N y `Q � `o � p � y c v MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 1009000 100,000 MCP GW -2 4,000 1,000 80 5 NL 509000 2,000 NL 400 100 MCP GW -3 20,000 20 000 30,000 20 000 NL 50 000 10 000 NL 10 000 50 000 MW -22 12/8/1999 GW -2 ND ND ND ND NR ND ND NR NR ND MW -22 3/10/2000 ND ND ND ND 500,000 U ND ND NR NR ND MW -22 4/17/2000 ND ND ND ND 5,000 U ND ND NR NR ND MW -22 6/12/2000 ND ND ND ND 10,000 U * ND ND NR NR ND MW -22 9/11/2000 ND ND ND ND 25,000 U ND ND NR NR 3,000 MW -22 12/12/2000 ND ND ND ND 50,000 U ND ND NR NR ND MW -22 2/20/2003 1,000 U 1,000 U 500 U 1,000 U 50,000 U 5,000 U 1,000 U NR 1,000 U 1,000 U MW -22 10/15/2003 10,000 U 10,000 U 10,000 U 10,000 U 250 U 500,000 U 10,000 U 20,000 U 10,000 U 10,000 U MW -22 10/4/2004 100 U 100 U 100 U 100 U 10,000 U * 5,000 U 100 U 200 U 100 U 110 MW -22 11/1/2005 200 U 200 U 200 U 200 U NR 10,000 U * 200 U 400 U 200 U 120 J MW -22 5/8/2006 500 U 500 U 500 U 500 U NR 25,000 U * 500 U 1,000 U 500 U 500 U MW -22 11/2/2006 1,000 U 1,000 U 1,000 U 1,000 U NR 50,000 U 1,000 U 2,000 U 1,000 U 1,000 U MW -22 11/2/2006 1,000 U 1,000 U 1,000 U 1,000 U NR 50,000 U 1,000 U 2,000 U 1,000 U 1,000 U MW -22 4/26/2007 5.0 U 5.0 U 5.0 U 5.0 U NR 250 U * 5.0 U IOU 2.4 J 150 MW -22 9/20/2007 200 U 200 U 200 U 200 U NR 10,000 U 200 U 400 U 200 U 200 U MW -23 12/8/1999 GW -2 L ND ND ND ND NR ND ND NR NR 14,000 MW -23 3/8/2000 ND ND ND ND 100,000 U ND ND NR NR 14,000 MW -23 4/17/2000 ND ND ND ND 50,000 U * ND ND NR NR 12,000 MW -23 6/12/2000 ND ND ND ND 10,000 U * ND ND NR NR 8,600 MW -23 9/11/2000 ND ND ND ND NR ND ND NR NR 7,500 MW -23 12/12/2000 ND ND ND ND NR ND ND NR NR ND MW -23 2/20/2003 400 U 400 U 200 U 400 U NR 2,000 U 400 U NR 400 U 81300 MW -23 10/15/2003 2,000 U 2,000 U 2,000 U 2,000 U NR 100,000 U 2,000 U 4,000 U 2,000 U 7,300 MW -23 1/22/2007 1,000 U 1,000 U 1,000 U 1,000 U NR 50,000 U *1 1,000 U 2,000 U 1,000 U 2,100 MW -23 9/20/2007 200 U 200 U 200 U 200 U NR 10,000 U 200 U 400 U 200 U 1,200 f G;IPRGJECTS\1167103M\ M_.n, M.k., gl�M Rep.ftZ,bTebesW.N91Tebk2 Ws 47 of 88 f Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works GAPRWECTfi\116]1039\OdM Intl MonMorinp\08M_RporlsV]abT�hMaVAei09\Tebb7.tls 48 of 88 Concentration ( /L) w a d u e o _ MCP x a = �j A e t -it °o C Ground- c [� y 9 N L L = Well water a Location Sample Classif- ID Date ication E 5 Epr' F F F > MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50 000 50 000 50,000 30,000 4 000 50,000 5 000 NL 50 000 MW -22 12/8/1999 GW -2 ND ND NR ND ND 4,300 5,000 U 240,000 NR ND MW -22 3/10/2000 ND ND NR ND ND 8,100 ND 430,000 NR ND MW -22 4/17/2000 ND ND NR ND ND ND ND 310,000 NR ND MW -22 6/12/2000 ND ND NR ND ND ND ND 340,000 NR ND MW -22 9/11/2000 ND ND NR ND ND 4,600 ND 280,000 NR ND MW -22 12/12/2000 ND ND NR ND ND 5,600 ND 310,000 NR ND MW -22 2/20/2003 1,000 U 5,000 U 1,000 U 2,000 U 1,000 U 2,000 ND 160,000 1,000 U 1,000 U MW -22 10/15/2003 10,000 U 100,000 U 10,000 U 20,000 U 10,000 U 10,000 U 1,000 U 150,000 20,000 U 20,000 U MW -22 10/4/2004 100 U 1,000 U 100 U 200 U 100 U 100 U 10,000 U 7,500 100 U 100 U MW -22 11/1/2005 400 U 2,000 U 200 U 400 U 200 U 200 U 100 U 6,000 200 U 200 U MW -22 5/8/2006 1,000 U 5,000 U 500 U 1,000 U 500 U 500 U 200 U 14,000 500 U 500 U MW -22 11/2/2006 2,000 U 10,000 U 1,000 U 2,000 U 1,000 U 1,000 U 500 U 16,000 1,000 U 1,000 U MW -22 11/2/2006 2,000 U 10,000 U 1,000 U 2,000 U 1,000 U 1,000 U 1,000 U 17,000 U 1,000 U 1,000 U MW -22 4/26/2007 IOU 50 U 5.0 U IOU 5.0 U 5.0 U 1,000 U 13,000 5.0 U 5.0 U MW -22 9/20/2007 400 U 2,000 U 200 U 400 U 200 U 200 U 5.0 U 13,000 200 U 100 U MW -23 12/8/1999 GW -2 ND ND NR ND ND ND 200 U 160,000 NR ND MW -23 3/8/2000 ND ND NR ND ND ND ND 230,000 NR ND MW -23 4/17/2000 ND ND NR ND ND ND ND 290,000 NR ND MW -23 6/12/2000 ND ND NR ND ND ND ND 180,000 NR ND MW -23 9/11/2000 ND ND NR ND ND ND ND 140,000 NR ND MW -23 12/12/2000 ND ND NR ND ND ND ND 260,000 NR ND MW -23 2/20/2003 400 U 2,000 U 400 U 1,000 U 400 U 400 U ND 56,000 400 U 400 U MW -23 10/15/2003 2,000 U 20,000 U 2,000 U 4,000 U 2,000 U 2,000 U 400 U 51,000 4,000 U 4,000 U MW -23 1/22/2007 2,000 U 10,000 U 1,000 U 2,000 U 1,000 U 1,000 U 2,000 U 18,000 1,000 U * 1,000 U MW -23 9/20/2007 400 U 2,000 U 200 U 400 U 200 U 200 U 1,000 U 9,900 200 U 100 U GAPRWECTfi\116]1039\OdM Intl MonMorinp\08M_RporlsV]abT�hMaVAei09\Tebb7.tls 48 of 88 r_� P, Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication~ Concentration (µg/L) v y R y 0a 3 e F u c e c c r' '" U U d Z y O A 'u MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20 000 20,000 30,000 20,000 NL 50,000 10,000 NL 10,000 50 000 MW -24 12/13/1999 GW -2 ND ND ND ND NR ND ND NR NR 14,000 MW -24 3/13/2000 ND ND ND ND NR ND ND NR NR 22,000 MW -24 4/17/2000 ND ND ND ND NR ND ND NR NR 19,000 MW -24 6/14/2000 ND ND ND ND NR ND ND NR NR 19,000 MW -24 9/14/2000 ND ND ND ND NR ND ND NR NR 20,000 MW -24 12/14/2000 ND ND ND ND NR ND ND NR NR 19,000 MW -24 3/13/2001 ND ND ND ND NR ND ND NR NR 17,000 MW -24 12/10/2001 ND ND ND ND 500,000 U ND ND NR NR 13,000 MW -24 7/1/2002 ND ND ND ND 1,200,000 U ND ND NR NR 181000 MW -24 7/1/2002 ND ND ND ND 25,000 U ND ND NR NR 18,000 MW -24 10/8/2002 2,500 U 3,800 U 2,500 U 2,500 U 500 U 25,000 U 2,500 U NR 3,800 U 19,000 MW -24 11/20/2002 5,000 U 7,500 U 5,000 U 5,000 U NR 50,000 U 5,000 U NR 7,500 U 19,000 MW -24 2/20/2003 2,000 U 2,000 U 1.0 U 2,000 U NR 10,000 U 2,000 U NR 2,000 U 19,000 MW -24 10/13/2003 41,600 10,000 U 7,400 J 10,000 U NR 500,000 U 10,000 U 20,000 U 10,000 U 17,000 MW -24 3/16/2004 19,000 J 25,000 U 25,000 U 25,000 U NR 1,200,000 U 25,000 U 50,000 U 25,000 U 70,000 MW -24 10/19/2004 500 U 500 U 500 U 500 U NR 25,000 U 500 U 1,000 U 500 U 280 J MW -24 7/17/2008 45 IOU IOU IOU NR 500 U IOU 20 U IOU IOU MW -25 12/14/1999 GW -2 ND ND ND ND NR ND ND NR NR 8,600 MW -25 3/13/2000 ND ND ND ND NR ND ND NR NR 7,600 MW -25 4/17/2000 ND ND ND ND 500,000 U ND ND NR NR 8,000 MW -25 6/14/2000 ND ND ND ND 500,000 U ND ND NR NR 9,100 MW -25 9/12/2000 ND ND ND ND 100,000 U ND ND NR NR 7,100 MW -25 12/14/2000 ND ND ND ND 1,000 U I ND ND NR NR 8,800 MW -25 12/10/2001 ND ND ND ND NR ND ND NR NR 13,000 MW -25 2/20/2003 2,000 U 2,000 U 1.0 U 2,000 U NR 10,000 U 2,000 U NR 2,000 U 11,000 MW -25 10/15/2003 10,000 U 10,000 U 10,000 U 10,000 U NR 500,000 U 10,000 U 20,000 U 10,000 U 12,000 MW -25 4/29/2004 10,000 U 10,000 U 10,000 U 10,000 U NR 500,000 U 10,000 U 20,000 U 10,000 U 11,000 MW -25 8/9/2004 2,000 U 2,000 U 2,000 U 2,000 U NR 100,000 U 2,000 U 4,000 U 2,000 U 12,000 MW -25 7/17/2008 20 U 20 U 20U 20 U NR 1,000 U 20 U 40 U 20 U 20 U G:\PROJECTS\11611038\06M_end MonRorM0106M_Repm6\DenaTebbsVA�N9\Tbk] ds 49 of 88 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( /L) v d w .. m ` a U Q o e w ,�, _ A o >, = ° -• 3 _ T S F H F F 0 A V c > MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50 000 50,000 50,000 30 000 4 000 50 000 5,000 NL 50 000 MW -24 12/13/1999 GW -2 ND ND NR ND ND ND 200 U 250,000 NR ND MW -24 3/13/2000 ND ND NR ND ND ND ND 340,000 NR ND MW -24 4/17/2000 ND ND NR ND ND I ND ND 380,000 NR ND MW -24 6/14/2000 ND ND NR ND ND ND ND 430,000 NR ND MW -24 9/14/2000 ND ND NR ND ND ND ND 290,000 NR ND MW -24 12/14/2000 ND ND NR 32,000 ND ND ND 290,000 NR ND MW -24 3/13/2001 ND ND NR ND ND ND ND 250,000 NR ND MW -24 12/10/2001 ND ND NR ND ND ND ND 200,000 NR ND MW -24 7/1/2002 ND ND NR ND ND ND ND 270,000 NR ND MW -24 7/1/2002 ND ND NR ND ND ND ND 270,000 NR ND MW -24 10/8/2002 2,500 U 25,000 U NR 25,000 U 2,500 U 3,800 U ND 360,000 NR 5,000 U MW -24 11/20/2002 5,000 U 50,000 U NR 50,000 U 5,000 U 7,500 U 3,800 U 250,000 NR 10,000 U MW -24 2/20/2003 2,000 U 10,000 U 2,000 U 5,000 U 2,000 U 2,000 U 7,500 U 260,000 2,000 U 2,000 U MW -24 10/13/2003 10,000 U 100,000 U 10,000 U 20,000 U 10,000 U 10,000 U 2,000 U 174,000 20,000 U 20,000 U MW -24 3/16/2004 25,000 U 250,000 U 25,000 U 50,000 U 25,000 U 25,000 U 10,000 U 380,000 50,000 U 7,500 U MW -24 10/19/2004 500 U 5,000 U 500 U 1,000 U 500 U 520 25,000 U 71,000 500 U 500 U MW -24 7/17/2008 20 U 100 U IOU 20 U IOU 10 U 500 U IOU IOU 5.0 U MW -25 12/14/1999 2 ND ND NR ND ND ND IOU 210,000 NR ND MW -25 3/13/2000 ND ND NR ND ND ND ND 160,000 NR ND MW -25 4/17/2000 ND ND NR ND ND ND ND 210,000 NR ND MW -25 6/14/2000 ND ND NR ND ND ND ND 200,000 NR ND MW -25 9/12/2000 ND ND NR ND ND ND ND 190,000 NR ND MW -25 12/14/2000GW ND ND NR 84,000 ND ND ND 180,000 NR ND MW -25 12/10/2001 ND ND NR ND ND ND ND 290,000 NR ND MW -25 2/20/2003 2,000 U 10,000 U 2,000 U 5,000 U 2,000 U 2,000 U ND 250,000 2,000 U 2,000 U MW -25 10/15/2003 10,000 U 100,000 U 10,000 U 20,000 U 10,000 U 10,000 U 2,000 U 310,000 20,000 U 20,000 U MW -25 4/29/2004 10,000 U 100,000 U 10,000 U 20,000 U 101000 U 10,000 U 10,000 U 250,000 10,000 U 10,000 U MW -25 8/9/2004 2,000 U 20,000 U 2,000 U 4,000U 2,000 U 2,000 U 10,000 U 110,000 2,000 U 2,000 U MW -25 7/17/2008 40 U 200 U 20 U 40 U 20 U 20 U 2,000 U 20 U 20 U IOU G:NROJECT51110210391O&M a,q M.,R., glM __R,p,MID.UT,bM,W,, 91T"2.As 50 of 88 Well Location ID MCP Ground. water Sample Classif- Date ication MCP UCL MCP GW -2 MCP GW -3 MW -26 12/13/1999 GW -2 MW -26 3/13/2000 MW -16 4/17/2000 MW -26 6/14/2000 MW -26 12/14/2000 MW -26 2/20/2003 MW -26 10/15/2003 MW -26 4/29/2004 MW -26 11/2/2006 MW -26 1/23/2007 MW -26 4/27/2007 MW -27 12/13/1999 GW -2 MW -27 3/13/2000 MW -27 6/14/2000 MW -27 9/14/2000 MW -27 12/14/2000 MW -27 3/13/2001 MW -27 3/13/2001 MW -27 12/10/2001 MW -27 7/1/2002 MW -27 10/8/2002 MW -27 11/20/2002 MW -27 2/20/2003 MW -27 10/14/2003 MW -27 5/3/2005 MW -27 5/8/2006 MW -27 10/7/2006 MW -27 4/27/2007 MW -27 7/4/2007 MW -27 9/26/2007 MW -27 10/28/2007 MW -27 4/1/2008 Table 2 Historical Groundwater Analytical Results for VOCs (pg/L) Merrimack Valley Works Concentration I u C ND ND R y d d L 3,800 ND L 12,000 ND ND ND 2,500 U * O L L ND ND 5,000 U * L Q ND ND ND 5,000 U 4,000 2,000 U 1,000 2,000 U NR 0,000 100,000 100,000 100,000 NL 1000 11000 80 5 NL 1,000 20,000 30,000 20 000 NL 5,600 ND ND ND 100,000 U 14,000 ND 3,800 ND 100,000 U 12,000 ND ND ND 2,500 U * 9,100 ND I ND ND 5,000 U * 8,700 ND ND ND 5,000 U 4,000 2,000 U 1,000 2,000 U NR 2,000 2,000 U 2,000 U 2,000 U NR 4,100 2,000 U 1,600 J 2,000 U NR 100 50 U 50 U 50 U NR 1,700 70 J 78 J 100 U NR 2,600 190 100 U 100 U NR ND ND ND ND NR ND ND ND ND NR ND ND ND ND NR ND ND ND ND NR ND ND ND ND NR ND ND ND ND NR ND ND ND ND 500,000 U ND ND ND ND NR ND ND ND ND 50,000 U 5,000 U 7,500 U 5,000 U 5,000 U 50,000 U 5,000 U 7,500 U 5,000 U 5,000 U 25,000 U 2,000 U 2,000 U 1.0 U 2,000 U 50,000 U 10,000 U 10,000 U 10,000 U 10,000 U 250,000 U* 19 U NR NR NR 100,000 U * 1,000 U 1,000 U 1,000 U 1,000 U 100,000 U* 1,000 U 1,000 U 1,000 U 1,000 U NR 1,000 500 U 500 U 500 U NR 1,000 U 1,000 U 230 J 1,000 U NR 5,000 U 5,000 U 5,000 U 5,000 U NR 2,000 U 2,000 U 2,000 U 2,000 U NR 2,000 U 2,000 U 2,000 U 2,000 U NR G'.TRWECTMilU103MOdM and_M,,k,,ng%MM_Rap0ft-TabbsV M9%TabW- 51 of 88 dJ C d d d R r v U � O sp, U a Z O � A u 100,000 100,000 NL 100,000 100,000 50,000 2,000 NL 400 100 50,000 10,000 NL 10,000 50,000 ND ND NR NR 24,000 ND ND NR NR 31,000 ND ND NR NR 29,000 ND ND NR NR 26,000 ND ND NR NR 20,000 10,000 U 2,000 U NR 2,000 U 28,000 100,000 U 2,000 U 4,000 U 2,000 U 9,500 100,000 U 2,000 U 4,000 U 2,000 U 24,000 1,000 J * 50 U 100 U 50 U 62 5,000 U * 100 U 200 U 100 U 140 5,000 U* 100 U 200 U 100 U 100 U ND ND NR NR 6,400 ND ND NR NR 8,800 ND ND NR NR 9,900 ND ND NR NR 9,100 ND ND NR NR 9,500 ND ND NR NR 7,800 ND ND NR NR 8,300 ND ND NR NR 23,000 ND ND NR NR 14,000 50,000 U 5,000 U NR 7,500 U 16,000 50,000 U 5,000 U NR 7,500 U 22,000 10,000 U 2,000 U NR 2,000 U 21,000 500,000 U 10,000 U 20,000 U 10,000 U 18,000 NR NR NR NR 19 U 50,000 U * 1,000 U 2,000 U 1,000 U 39,000 50,000 U * 1,000 U 2,000 U * 1,000 U 49,000 25,000 U * 500 U 1,000 U * 500 U 40,000 50,000 U 1,000 U 2,000 U 1,000 U 43,000 250,000 U 5,000 U 10,000 U 5,000 U 62,000 100,000 U 2,000 U 4,000 U 2,000 U 34,000 100,000 U 2,000 U 4,000 U * 2,000 U 51,000 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration (µ /L) w d � d e R Y A d O _ d O d ,O„ .0u d `o t a ` A d o o a w d r °' 17 ° .2i u C , a, >. y a u i ? Q E E✓ F F F V o V a 0 MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50 000 50 000 50 000 30 000 4,000 50,000 5.000 NL 50,000 MW -26 12/13/1999 GW -2 ND ND NR ND ND ND 20 U 190,000 NR ND MW -26 3/13/2000 ND ND NR ND ND ND ND 410,000 NR ND MW -26 4/17/2000 ND ND NR ND ND ND ND 410,000 NR ND MW -26 6/14/2000 ND ND NR 12,000 ND ND ND 330,000 NR ND MW -26 12/14/2000 ND ND NR ND ND ND ND 260,000 NR ND MW -26 2/20/2003 2,000 U 10,000 U 2,000 U 5,000 U 2,000 U 2,000 U ND 200,000 2,000 U 2,000 U MW -26 10/15/2003 2,000 U 1 20,000 U 2,000 U 4,000 U 2,000 U 2,000 U 2,000 U 82,000 4,000 U 4,000 U MW -26 4/29/2004 2,000 U 20,000 U 2,000 U 4,000 U 2,000 U 1,000 J 2,000 U 100,000 2,000 U 2,000 U MW -26 11/2/2006 100 U 500 U * 50 U 100 U 50 U * 50 U 2,000 U 1,300 50 U 50 U MW -26 1/23/2007 200 U 1,000 U 100 U 200 U 100 U 100 U 50 U 2,700 100 U * 100 U MW -26 4/27/2007 200 U 1,000 U 100 U 200 U 100 U 100 U 100 U 100 U 100 U 100 U MW -27 12/13/1999 GW -2 ND ND NR ND ND ND 100 U 190,000 NR ND MW -27 3/13/2000 ND ND NR ND ND ND ND 260,000 NR ND MW -27 6/14/2000 ND ND NR ND ND ND ND 290,000 NR ND MW -27 9/14/2000 ND ND NR ND ND ND ND 340,000 NR ND MW -27 12/14/2000 ND ND NR 28,000 ND ND ND 340,000 NR ND MW -27 3/13/2001 ND ND NR ND ND 2,000 ND 250,000 NR ND MW -27 3/13/2001 ND ND NR ND ND ND ND 220,000 NR ND MW -27 12/10/2001 ND ND NR ND ND ND ND 570,000 NR ND MW -27 7/1/2002 ND ND NR ND ND ND ND 350,000 NR ND MW -27 10/8/2002 5,000 U 50,000 U NR 50,000 U 5,000 U 7,500 U ND 270,000 NR 10,000 U MW -27 11/20/2002 5,000 U 50,000 U NR 50,000 U 5,000 U 7,500 U 7,500 U 290,000 NR 10,000 U MW -27 2/20/2003 2,000 U 10,000 U 2,000 U 5,000 U 2,000 U 2,000 U 7,500 U 250,000 2,000 U 2,000 U MW -27 10/14/2003 10,000 U 100,000 U 10,000 U 20,000 U 10,000 U 10,000 U 2,000 U 140,000 20,000 U 20,000 U MW -27 5/3/2005 NR NR NR NR 19 U NR 10,000 U 53 NR NR MW -27 5/8/2006 2,000 U 10,000 U 1,000 U 2,000 U 1,000 U 1,000 U 19 U 52,000 1,000 U 1,000 U MW -27 10/7/2006 2,000 U 10,000 U * 1,000 U 2,000 U 1,000 U 1,000 U 1,000 U 67,000 1,000 U * 1,000 U MW -27 4/27/2007 1,000 U 5,000 U * 500 U 1,000 U 500 U 500 U 700 J 41,000 500U* 500 U MW -27 7/4/2007 2,000 U 10,000 U 1,000 U 2,000 U 1,000 U 1,000 U 460 J 51,000 1,000 U 1,000 U MW -27 9/26/2007 10,000 U 50,000 U 5,000 U 10,000 U 5,000 U 5,000 U 510 J 84,000 5,000 U 2,500 U MW -27 10/28/2007 4,000 U 20,000 U 2,000 U 4,000 U 2,000 U 2,000 U 5,000 U 41,000 2,000 U 1,000 U MW -27 4/1/2008 4,000 U 20,000 U * 2,000 U 4,000 U 2,000 U 2,000 U 2,000 U 38,000 2,000 U 1,000 U G1PRWECTS111V1M9=M_.. Monitl,N910EM_RepoNnlO,hT,b ,WlNS%Tlbb2.tl 52 of 88 Well Location ID MCP Ground. water Sample Classif- Date ication MCP UCL MCP GW -2 MCP GW -3 MW -28 12/14/1999 GW -2 MW -28 3/14/2000 MW -28 6/14/2000 MW -28 12/15/2000 MW -28 3/14/2001 MW -28 12/10/2001 MW -28 6/28/2002 MW -28 2/20/2003 MW -28 10/14/2003 MW -28 5/27/2004 MW -28 12/29/2004 MW -28 11/1/2005 MW -28 11/2/2006 MW -28 10/28/2007 MW -28 7/17/2008 MW -28 7/17/2008 MW -29 12/13/1999 GW -2 MW -29 3/14/2000 MW -29 6/14/2000 MW -29 12/15/2000 MW -29 12/10/2001 MW -29 10/13/2003 MW -29 5/9/2006 MW -29 10/25/2007 Table 2 Historical Groundwater Analytical Results for VOCs (gg/L) Merrimack Valley Works Q 0 C C L O w H � C R � L Q 1 rl v C y Z L Q 0,000 ,000 100,000 1,000 100,000 80 1,000 20 000 30 000 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 400 U 400 U 200 U 200 U 200 U 200 U 500 U 500 U 500 U 200 U 200 U 200 U 5.0 U 5.0 U 5.0 U 25 U 25 U 25 U 100 U 100 U 100 U 100 U 100 U * 100 U 100U 110* 75J ,500 680 2,700 ,800 860 4,200 ,000 280 660 260 100 230 62 67 120 50 U 31 J 76 100 U 110 640 200 J 130 J 560 5 ),000 ND ND ND ND ND ND ND 400 U 200 U 500 U 200 U 5.0 U 25 U 100 U 100 U 100 U ND ND ND ND ND 50 U 100 U 200 U GIPRWE0T6\116]1039\O&M ,n MIIK"N9106M R.p MDIMT,bb W.MM1 Eb2.A. 53 of 88 Concentration I C R K 0 Q a NL NL NL NR NR 10,000 U 25,000 U 10,000 U 250 U * 1,300 U * 5,000 U * 5,000 U 5,000 U NR NR NR NR NR 2,500 U 5,000 U 10,000 U NR NR NR NR NR NR ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2,000 U 400 U 10,000 U 200 U 25,000 U 500 U 10,000 U 200 U 250 U* 5.0U 1,300 U * 25 U 5,000 U 100 U 5,000 U 100 U 5,000 U 100 U ND ND ND ND ND ND ND ND ND ND 2,500 U 50 U 5,000 U * 100 U 10,000 U 200 U NL NL NL NR NR NR NR NR NR NR NR 400 U ,000 U 400 U IOU 50 U 200 U 200 U 200 U NR NR NR NR NR 100 U 200 U 400 U C O V E O C � O A L N o ri y U v 10,000 100,000 400 100 0 000 50 000 NR ND NR ND NR 2,400 NR ND NR ND NR 2,300 NR 6,000 400 U 1,700 200 U 540 500 U 1,700 200 U 150 J 5.0 U 16 25 U 220 100 U 240 100 U 1,400 100 U 930 NR ND NR 110 NR 270 NR 120 NR 180 50 U 68 100 U 92 J 200 U 76 J Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works G,IMNECTMI 18210]81G8M Ana MonYwNp\GbM_R�porlslDabTeEMSVA�N81Tabb2.ds 54 of 88 Concentration (µ L w � R O d ;fl L d O V d MCP rYi o ^ U ice' c O a, � OL ° e u ° C Ground- ` O Well water a a 3 _ U Location Sample Classif- a 2 e ID Date ication E F F H F > MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50 000 50 000 50 000 30000 4,000 50 000 5 000 NL 50 000 MW -28 12/14/1999 GW 2 ND ND NR ND ND ND 540 J 33,000 NR ND MW -28 3/14/2000 ND ND NR ND ND ND ND 69,000 1 NR ND MW -28 6/14/2000 ND ND NR ND ND ND ND 100,000 NR ND MW -28 12/15/2000 ND ND NR 21,000 ND ND ND 71,000 NR ND MW -28 3/14/2001 ND ND NR ND ND ND ND 100,000 NR ND MW -28 12/10/2001 2,200 ND NR ND ND ND ND 75,000 NR ND MW -28 6/28/2002 ND ND NR ND ND ND ND 170,000 NR ND MW -28 2/20/2003 400 U 2,000 U 400 U 1,000 U 400 U 400 U ND 75,000 400 U 400 U MW -28 10/14/2003 200 U 2,000 U 200 U 400 U 200 U 200 U 400 U 12,000 400 U 400 U MW -28 5/27/2004 500 U 5,000 U 500 U 1,000 U 500 U 500 U 200 U 21,000 1 500 U 500 U MW -28 12/29/2004 200 U 2,000 U 200 U 400 U 200 U 200 U 500 U 3,300 200 U 200 U MW -28 11/1/2005 IOU 50 U 5.0 U IOU 5.0 U 5.0 U 200 U 150 5.0 U 5.0 U MW -28 11/2/2006 50 U 250 U * 25 U 50 U 25 U * 25 U 5.0 U 990 25 U 24 J MW -28 10/28/2007 200 U 1,000 U 100 U 200 U 32 J 100 U 25 U 3,600 100 U 50 U MW -28 7/17/2008 200 U 1,000 U 100 U 200 U 100 U 100 U 100 U 4,700 100 U 50 U MW -28 7/17/2008 200 U 1,000 U 100 U 200 U 100 U 100 U 100 U 4,900 100 U 50 U MW -29 12/13/1999 GW -2 ND ND NR ND ND ND 100 U 13,000 NR ND MW -29 3/14/2000 ND ND NR ND ND 430 ND 16,000 NR ND MW -29 6/14/2000 ND ND NR ND ND ND ND 3,800 NR ND MW -29 12/15/2000 ND ND NR ND ND ND ND 1,300 NR ND MW -29 12/10/2001 ND ND NR ND ND ND ND 1,300 NR ND MW -29 10/13/2003 50 U 500 U 50 U 100 U 50 U 50 U ND 1,500 100 U 100 U MW -29 5/9/2006 200 U 1,000 U 100 U 200 U 100 U 100 U 50 U 4,200 100 U 100 U MW -29 10/25/2007 400 U 2,000 U 200 U 400 U 200 U 200 U 100 U 4,300 200 U 100 U G,IMNECTMI 18210]81G8M Ana MonYwNp\GbM_R�porlslDabTeEMSVA�N81Tabb2.ds 54 of 88 Table 2 Historical Groundwater Analytical Results for VOCs (µg/l-) Merrimack Valley Works G1PROJECT-1621039\O6M end Monkorn910&M Replftl bTabbsWA O9lThbk2.d 55 of 88 I Lj Concentration ( g/L) C C MCP Ground- Well water Location Sample Classif- ID Date ication MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 29000 NL 400 100 MCP GW -3 20,000 20,000 30,000 20 000 NL 1 50,000 10,000 NL 10,000 50,000 MW -30 12/13/1999 ND ND ND ND NR ND ND NR NR 4,300 MW -30 3/13/2000 ND ND ND ND NR ND ND NR NR 3,600 MW -30 4/17/2000 ND ND ND ND NR ND ND NR NR 3,700 MW -30 6/13/2000 ND ND ND ND NR ND ND NR NR ND MW -30 9/14/2000 ND ND ND ND NR ND ND NR NR 5,300 MW -30 12/15/2000 ND ND ND ND NR ND ND NR NR ND MW -30 3/13/2001 ND ND ND ND 250,000 U ND ND NR NR ND MW -30 12/10/2001 35,000 ND 11,000 ND 1,200,000 U ND ND NR NR 5,000 MW -30 7/3/2002 2,200 ND ND ND 250,000 U ND ND NR NR 2,700 MW -30 10/8/2002 ND 7,500 U 5,000 U 5,000 U 250,000 U 50,000 U 5,000 U NR 7,500 U 6,700 MW -30 11/20/2002 GW -2 3,400 3,800 U 2,500 U 2,500 U 250,000 U 1 25,000 U 2,500 U NR 3,800 U 8,400 MW -30 2/20/2003 5,800 400 U 700 400 U NR 2,000 U 400 U NR 400 U 7,900 MW -30 10/14/2003 4,400 J 5,000 U 5,000 U 5,000 U 1,000 U * 250,000 U 5,000 U 10,000 U 5,000 U 5,700 MW -30 3/16/2004 20,000 J 25,000 U 25,000 U 25,000 U 2,500 U 1,200,000 U 25,000 U 50,000 U 25,000 U 72,000 MW -30 5/13/2004 5,000 U 5,000 U 5,000 U 5,000 U 2,500 U 250,000 U 5,000 U 10,000 U 5,000 U 5,000 U MW -30 7/15/2004 7,700 3,100 J 4,600 J 5,000 U NR 250,000 U 5,000 U 10,000 U 5,000 U 34,000 MW -30 10/4/2004 4,000 J 5,000 U 2,500 J 5,000 U NR 250,000 U 5,000 U 10,000 U 5,000 U 8,600 MW -30 5/3/2005 91 NR NR NR NR NR NR NR NR 16 U MW -30 11/10/2006 460 77 * 20 U 20 U NR 1,000 U 20 U 40 U 20 U 20 U MW -30 4/26/2007 870 50 U 32 J 50U NR 2,500 U * 50 U 100 U 50 U 43 J MW -30 4/26/2007 760 50U 50 U 50 U NR 2,500 U * 50 U 100 U 50 U 40 J G1PROJECT-1621039\O6M end Monkorn910&M Replftl bTabbsWA O9lThbk2.d 55 of 88 I Lj Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works GIMWEOTS\11621039\06M end Mont.,Ng\O6M_RwftMehT,b ,W,N91T�bM2 tl 56 of 88 Concentration ( g/L) V d 49, d C L d � � +t" y y L d MCP � x° A U yC o Ground- e =0 ° s Well water a r 151 Location Sample Classif- c u ' g ID Date ication E F F .` F F MCP UCL 100,000 100,000 1 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50 000 50,000 50,000 30,000 1 4 000 50 000 5 000 NL 50,000 MW -30 12/13/1999 GW -2 ND NR NR ND 4,700 ND 200 U 150,000 NR ND MW -30 3/13/2000 ND ND NR ND 11,000 ND ND 350,000 NR ND MW -30 4/17/2000 ND ND NR ND 14,000 ND ND 400,000 NR ND MW -30 6/13/2000 ND ND NR 43,000 12,000 ND ND 380,000 NR ND MW -30 9/14/2000 ND ND NR ND 7,200 ND ND 250,000 NR ND MW -30 12/15/2000 ND ND NR 46,000 12,000 ND ND 290,000 NR ND MW -30 3/13/2001 ND ND NR ND 11,000 ND ND 290,000 NR ND MW -30 12/10/2001 ND ND NR ND ND 4,200 ND 110,000 NR ND MW -30 7/3/2002 ND ND NR ND 720 ND ND 42,000 NR ND MW -30 10/8/2002 5,000 U 50,000 U NR 50,000 U 5,000 U 7,500 U ND 180,000 NR 10,000 U MW -30 11/20/2002 2,500 U 25,000 U NR 25,000U 2,500 U 3,800 U 7,500 U 100,000 NR 5,000 U MW -30 2/20/2003 400 U 2,000 U 400 U 1,000 U 1,400 21500 3,800 U 89,000 400 U 400 U MW -30 10/14/2003 5,000 U 50,000 U 5,000 U 10,000 U 5,000 U 3,200 J 400 U 210,000 10,000 U 10,000 U MW -30 3/16/2004 25,000 U 250,000 U 25,000 U 50,000 U 25,000 U 25,000 U 5,000 U 390,000 50,000 U 7,500 U MW -30 5/13/2004 5,000 U 50,000 U 5,000 U 10,000 U 5,000 U 5,000 U 25,000 U 100,000 5,000 U 5,000 U MW -30 7/15/2004 5,000 U 50,000 U 5,000 U 10,000 U 5,000 U 2,700 J 5,000 U 310,000 5,000 U 5,000 U MW -30 10/4/2004 5,000 U 50,000 U 5,000 U 10,000 U 5,000 U 5,000 U 5,000 U 140,000 5,000 U 5,000 U MW -30 5/3/2005 NR NR NR NR 16 U NR 5,000 U 7.0 NR NR MW -30 11/10/2006 40 U 200 U 20 U 40 U 20 U 20 U 16 U 20 U 20 U 20 U MW -30 4/26/2007 100 U 500 U 50U 100 U 42 J 50 U 20 U 1,700 50 U 50 U MW -30 I 4/26/2007 100 U 500 U 50U 100 U 48J 50 U 50 U 1,600 50 U 50 U GIMWEOTS\11621039\06M end Mont.,Ng\O6M_RwftMehT,b ,W,N91T�bM2 tl 56 of 88 n Li I' u M LJ n IU n u n u `l1 U I�I l� n LJ M u rI u n I Lj F u 4� Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works `1 G:TROJECTS11162103g10BM_entl Mansor'ng\OdM_Reporls\OataTabbsgAeN9\Tebb2.bs 57 of 88 U Concentration ( /L) Well Location ID Sample Date MCP Ground- water Classif- ication o y .� .; CQ y 3 A . Y s 3 A .wd R r S A N. e � A Q N C R � o U FF C o U fl y o u MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20 000 20,000 30,000 20 000 NL 50,000 10 000 NL 10,000 50,000 MW -31 12/13/1999 73,000 4,600 8,100 ND NR ND ND NR NR 13,000 MW -31 3/13/2000 58,000 5,800 12,000 ND 250,000 U ND ND NR NR 20,000 MW -31 4/17/2000 75,000 4,300 8,500 ND 250,000 U ND ND NR NR 26,000 MW -31 6/13/2000 88,000 5,500 9,600 ND 100,000 U ND ND NR NR 34,000 MW -31 12/15/2000 220,000 8,300 38,000 ND 10,000 U ND ND NR NR 56,000 MW -31 12/10/2001 120,000 4,700 46,000 ND 25,000 U * ND ND NR NR 14,000 MW -31 2/20/2003 350,000 2,000 U 12,000 2,000 U 100,000 U * 10,000 U 2,000 U NR 2,000 U 8,000 MW -31 10/15/2003 160,000 4,800 J 52,000 5,000 U 10,000 U 250,000 U 5,000 U 10,000 U 5,000 U 5,000 U MW -31 10/15/2003 GW -2 160,000 4,700 J 53,000 5,000 U 13,000 U 250,000 U 5,000 U 10,000 U 5,000 U 5,000 U MW -31 4/6/2005 150,000 8,100 90,000 2,000 U 100,000 U * 100,000 U 2,000 U 4,000 U 2,000 U 2,000 U MW -31 10/6/2006 7,500 200 U 290 200 U 100,000 U * 2,400 J 200 U 400 U 200 U 200 U MW -31 11/10/2006 6,100 2,100 * 360 J 500 U NR 25,000 U 500 U 1,000 U 500 U 9,200 MW -31 1/23/2007 10,000 2,000 U 3,800 2,000 U NR 100,000 U * 2,000 U 4,000 U 2,000 U 2,300 MW -31 4/26/2007 27,000 650 680 200 U NR 10,000 U * 200 U 400 U * 200 U 7,100 MW -31 7/4/2007 6,800 170 J 390 250 U NR 13,000 U 250 U 500 U 250 U 1,400 MW -31 9/26/2007 13,000 2,000 U 3,500 2,000 U NR100,000 U 2,000 U 4,000 U 2,000 U 2,000 U MW -31 3/31/2008 49,000 2,000 U 1,300 J 2,000 U NR 100,000 U 2,000 U 4,000 U * 2,000 U 11,000 MW -32 12/14/1999 GW -2 18,000 ND 5,100 ND NR ND ND NR NR 28,000 MW -32 3/13/2000 14,000 ND ND ND 500,000 U ND ND NR NR 37,000 MW -32 6/14/2000 19,000 ND ND ND 10,000 U * ND ND NR NR 21,000 MW -32 9/12/2000 17,000 ND ND ND 10,000 U ND ND NR NR 22,000 MW -32 12/14/2000 19,000 ND ND ND NR ND ND NR NR 19,000 MW -32 12/10/2001 22,000 ND 5,900 ND NR ND ND NR NR 15,000 MW -32 2/20/2003 12,000 2,000 U 4,000 2,000 U NR 10,000 U 2,000 U NR 2,000 U 18,000 MW -32 10/15/2003 21,000 10,000 U 81400 J 10,000 U NR 500,000 U 10,000 U 20,000 U 10,000 U 17,000 MW -32 9/26/2007 3,700 490 200 U 200 U NR 10,000 U 200 U 400 U 200 U 200 U MW -32 7/17/2008 1,700 160 J 200 U 200 U NR 10,000 U 200 U 400 U 200 U 200 U `1 G:TROJECTS11162103g10BM_entl Mansor'ng\OdM_Reporls\OataTabbsgAeN9\Tebb2.bs 57 of 88 U Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( /L) O �v W e W E u w d a d s y d 05 X U " = d is A C N i. IF d � t C L r °o d C V L F F Y C o a MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50,000 50,000 50 000 30,000 4,000 50,000 5,000. NL 50,000 MW -31 12/13/1999 GW -2 ND ND NR ND ND 6,500 50 U 100,000 NR ND MW -31 3/13/2000 ND ND NR ND ND 7,400 ND 100,000 NR ND MW -31 4/17/2000 ND ND NR ND ND 7,300 ND 110,000 NR ND MW -31 6/13/2000 ND ND NR 8,400 ND 7,700 ND 110,000 NR ND MW -31 12/15/2000 ND ND NR 23,000 ND 19,000 ND 190,000 NR ND MW -31 12/10/2001 ND ND NR ND ND 10,000 ND 97,000 NR ND MW -31 2/20/2003 2,000 U 10,000 U 2,000 U 5,000 U 2,000 U 18,000 ND 230,000 2,000 U 2,000 U MW -31 10/15/2003 5,000 U 50,000 U 5,000 U 10,000 U 5,000 U 21,000 2,000 U 170,000 10,000 U 10,000 U MW -31 10/15/2003 5,000 U 50,000 U 5,000 U 10,000 U 5,000 U 21,000 5,000 U 170,000 10,000 U 10,000 U MW -31 4/6/2005 2,000 U 20,000 U 2,000 U 4,000 U 2,000 U 17,000 5,000 U 81,000 2,000 U 2,000 U MW -31 10/6/2006 400 U 2,000 U 200 U * 400 U 200 U 160 J 2,000 U 1,800 200 U 200 U MW -31 11/10/2006 1,000 U 5,000 U 500 U 510 J 500 U 500 U 200 U * 2,600 500 U 500 U MW -31 1/23/2007 4,000 U 20,000 U 2,000 U 4,000 U 2,000 U 1,800 J 500 U 35,000 2,000 U * 2,000 U MW -31 4/26/2007 400 U 2,000 U * 200 U 400 U 200 U 750 2,000 U 8,500 200 U * 200 U MW -31 7/4/2007 500 U 2,500 U 250 U 500 U 250 U 250 J 200 U 3,700 250 U 250 U MW -31 9/26/2007 4,000 U 20,000 U 2,000 U 4,000 U 2,000 U 2,000 U 250 U 32,000 2,000 U 1,000 U MW -31 3/31/2008 4,000 U 20,000 U * 2,000 U 4,000 U 2,000 U 640 J 2,000 U 6,700 2,000 U 1,000 U MW -32 12/14/1999 GW -2 ND ND NR ND ND 3,900 2,000 U 360,000 NR ND MW -32 3/13/2000 ND ND NR ND ND ND ND 390,000 NR ND MW -32 6/14/2000 ND ND NR ND ND ND ND 340,000 NR ND MW -32 9/12/2000 ND ND NR ND ND ND ND 310,000 NR ND MW -32 12/14/2000 ND ND NR ND ND ND ND 300,000 NR ND MW -32 12/10/2001 ND ND NR ND ND ND ND 220,000 NR ND MW -32 2/20/2003 2,000 U 10,000 U 2,000 U 5,000 U 2,000 U 4,000 ND 250,000 2,000 U 2,000 U MW -32 10/15/2003 10,000 U 100,000 U 10,000 U 20,000 U 10,000 U 6,500 J 2,000 U 340,000 20,000 U 20,000 U MW -32 9/26/2007 400 U 2,000 U 200 U 400 U 200 U 200 U 10,000 U 200 U 200 U 100 U MW -32 7/17/2008 400 U 1 2,000 U 200 U 400_y J 200 U 200 U 200 U 410 200 U 100 U 0:1 ROIECT5111921MMM_Ind_M,,k,hg%MM_R,"ft h T,b ,V ,091T�bl,2d 58 of 88 F1 iMU Lj Table 2 Historical Groundwater Analytical Results for VOCs (pg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( g/L) e e a a v R p � � L d v d 0 0 w F, u '0 N V Y u 0 i d O ` u MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 100 MCP GW -3 20,000_ 20,000 30,000 20,000 NL 50,000 10,000 NL JNR 50,000 MW -33 12/13/1999 GW -2 60,000 ND ND ND NR ND ND NR ND MW -33 3/13/200 76,000 2,300 5,700 ND NR ND ND NR7,200 MW -33 4/17/2000 15,000 ND ND ND NR ND ND NR NR 7,700 MW -33 6/142000 14,000 3,400 3,800 ND NR ND ND NR NR 8,400 MW -33 12/14/2000 30,000 ND 4,200 ND NR ND ND NR NR 7,800 MW -33 3/13/2001 34,000 ND 5,200 ND NR ND ND NR NR 7,900 MW -33 12/10/2001 23,000 ND 8,600 ND 500,000 U ND ND NR NR 85,000 MW -33 12/10/2001 56,000 11,000 ND ND 500,000 U 600,000 ND NR NR 12,000 MW -33 7/1/2002 220,000 ND 15,000 ND NR ND ND NR NR 6,800 MW -33 10/8/2002 4,000 3,800 U 2,500 U 2,500 U 50,000 U 25,000 U 2,500 U NR 3,800 U 30,000 MW -33 11/20/2002 26,000 3,800 U 4,700 2,500 U 50,000 U 25,000 U 2,500 U NR 3,800 U 28,000 MW -33 2/20/2003 100,000 3,000 15,000 2,000 U 250,000 U * 10,000 U 2,000 U NR 2,000 U 12,000 MW -33 10/14/2003 84,000 10,000 U 15,000 10,000 U 250,000 U * 500,000 U 10,000 U 20,000 U 10,000 U 14,000 MW -33 10/14/2003 93,000 10,000 U 17,000 10,000 U NR 500,000 U 10,000 U 20,000 U 10,000 U 13,000 MW -33 5/3/2005 85,000 NR NR NR NR NR NR NR NR 100 U MW -33 1/23/2007 63,000 5,500 2,000 1,000 U NR 50,000 U 1,000 U 2,000 U 1,000 U 1,800 MW -33 7/4/2007 8,000 1,400 11,000 1,000 U NR 50,000 U 1,000 U 2,000 U 1,000 U 470 J MW -33 9/26/2007 15,000 5,000 U 26,000 5,000 U NR 250,000 U 5,000 U 10,000 U 5,000 U 5,000 U MW -33 4/2/2008 160,000 5,600 20,000 5,000 U NR 250,000 U *1 5,000 U 10,000 U 5,000 U 30,000 1 G:\PROJECTS\116210391p6M_antl Monilorm9�OdM_R�porlsWateTabbs\iri3f09\Teblel.ds 59 of 88 IIILJ Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works GAOJECTS111 R 103MO&M antl_M,IkllllglOBM Reports UT,bk,%M,Ng%T,bbl.A. 60 of 88 Concentration ( g/L v r u a a � r o °' MCP Ground- d Well water y Location Sample Classif- c a = L = e u u 1 ID Date ication £ F F F F MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50 000 50 000 -50,000 30 000 44,0000 50 000 5,000 NL 50000 MW -33 12/13/1999 GW -2 ND ND NR ND ND ND 200 U 110,000 NR ND MW -33 3/13/2000 ND ND NR ND ND 4,100 ND 190,000 NR ND MW -33 4/17/2000 ND ND NR ND ND ND ND 170,000 NR ND MW -33 6/14/2000 ND ND NR 6,200 ND 2,400 ND 190,000 NR ND MW -33 12/14/2000 ND ND NR ND ND ND ND 160,000 NR ND MW -33 3/13/2001 ND ND NR ND ND ND ND 160,000 NR ND MW -33 12/10/2001 ND 46,000 NR ND ND 14,000 ND 120,000 NR ND MW -33 12/10/2001 7,800 NR ND ND ND ND 380,000 ND NR ND MW -33 7/1/2002 ND NR ND ND 9,500 ND 300,000 ND NR ND MW -33 10/8/2002 2,500 U 25,000 U NR 25,000 U 2,500 U 3,800 U ND 180,000 NR 5,000 U MW -33 11/20/2002 2,500 U 25,000 U NR 25,000 U 2,500 U 3,800 U 3,800 U 200,000 NR 5,000 U MW -33 2/20/2003 2,000 U 10,000 U 2,000 U 5,000 U 2,000 U 7,000 3,800 U 300,000 2,000 U 2,000 U MW -33 10/14/2003 10,000 U 100,000 U 10,000 U 20,000 U 10,000 U 7,800 J 2,000 U 220,000 20,000 U 20,000 U MW -33 10/14/2003 10,000 U 100,000 U 10,000 U 20,000 U 10,000 U 7,800 J 10,000 U 210,000 20,000 U 20,000 U MW -33 5/3/2005 NR NR NR NR 100 U NR 10,000 U 100 U NR NR MW -33 1/23/2007 2,000 U 10,000 U 1,000 U 2,000 U 1,000 U 1,100 100 U 8,600 1,000 U * 1,000 U MW -33 7/4/2007 2,000 U 10,000 U 1,000 U 2,000 U 1,000 U 210 J 1,000 U 33,000 1,000 U 1,000 U MW -33 9/26/2007 10,000 U 50,000 U 5,000 U 10,000 U 5,000 U 5,000 U 1,000 U 94,000 5,000 U 2,500 U MW -33 4/2/2008 10,000 U 50,000 U * 5,000 U 10,000 U 8,400 8,800 5,000 U 54,0005,000 U 2,500 U GAOJECTS111 R 103MO&M antl_M,IkllllglOBM Reports UT,bk,%M,Ng%T,bbl.A. 60 of 88 In U n tJ n u n n u n Li r Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( g/L) C d R d R c e o o e d � `o o $ e `° e0 r o F uk° a o o ., Q U U C y Y ° u Ca u MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 1009000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20,000 30,000 20,000 NL 50000 10,000 NL 10,000 50 000 MW -34 12/8/1999 GW -2 ND ND ND ND NR ND ND NR NR ND MW -34 3/9/2000 ND ND ND ND NR ND ND NR NR ND MW -34 4/17/2000 ND ND ND ND NR ND ND NR NR ND MW -34 6/12/2000 ND ND ND ND NR ND ND NR NR ND MW -34 6/12/2000 ND ND ND ND NR ND ND NR NR ND MW -34 9/11/2000 ND ND ND ND NR ND ND NR NR ND MW -34 12/12/2000 ND ND ND ND NR ND ND NR NR ND MW -34 3/12/2001 ND ND ND ND 500,000 U ND ND NR NR ND MW -34 12/11/2001 ND ND ND ND 500,000 U ND ND NR NR ND MW -34 6/28/2002 ND ND ND ND 100,000 U ND ND NR NR 330 MW -34 10/8/2002 5,000 U 7,500 U 5,000 U 5,000 U 25,000 U 50,000 U 5,000 U NR 7,500 U 5,000 U MW -34 11/20/2002 5,000 U 7,500 U 5,000 U 5,000 U 120,000 U 50,000 U 5,000 U NR 7,500 U 5,000 U MW -34 2/20/2003 4,000 U 4,000 U 2,000 U 4,000 U NR 20,000 U 4,000 U NR 4,000 U 4,000 U MW -34 10/13/2003 10,000 U 10,000 U 10,000 U 10,000 U 10,000 U * 500,000 U 10,000 U 20,000 U 10,000 U 10,000 U MW -34 4/28/2004 10,000 U 10,000 U 10,000 U 10,000 U 2,500 U 500,000 U 10,000 U 20,000 U 10,000 U 10,000 U MW -34 7/15/2004 2,000 U 2,000 U 2,000 U 2,000 U 2,500 U 100,000 U 2,000 U 4,000 U 2,000 U 2,000 U MW -34 10/19/2004 500 U 500 U 500 U 500 U 13,000 U 25,000 U 500 U 1,000 U 500 U 500 U MW -34 12/16/2004 2,500 U 2,500 U 2,500 U 2,500 U 13,000 U F 120,000 U 2,500 U 5,000 U 2,500 U 21500 U MW -34 5/3/2005 1,000 U NR NR NR 5,000 U NR NR NR NR 1,000 U MW -34 11/1/2005 200 U 200 U 200 U 200 U 1,000 U * 10,000 U * 200 U 400 U 200 U 140 J MW -34 5/8/2006 50 U 50 U 50 U 50 U 1,000 U * 2,500 U * 50 U 100 U 50 U 42 J MW -34 5/8/2006 50 U 50 U 50 U 50 U 5,000 U 2,500 U * 50 U 100 U 50 U 47 J MW -34 11/2/2006 250 U 250 U 250 U 250 U 5,000 U * 13,000 U 250 U 500 U 250 U 250 U MW -34 11/2/2006 250 U 250 U 250 U 250 U 2,500 U 13,000 U 250 U 500 U 250 U 250 U MW -34 4/26/2007 100 U 100 U 100 U 100 U 13,000 U 5,000 U * 100 U 200 U 100 U 100 U MW -34 10/28/2007 20 U 20 U 20 U 20 U 100,000 U 1,000 U 20 U 40 U 20 U 29 MW -34 3/31/2008 20 U 20 U 20 U 20 U 13,000 U * 1,000 U 20 U 40 U * 13 J 14 J MW -341) 6/30/2005 GW -2 100 U 100 U 100 U 100 U 50,000 U 5,000 U 100 U 200 U 100 U 310 MW -341) 11/1/2005 100 U 100 U 100 U 100 U 250,000 U * 5,000 U * 100 U 200 U 100 U 630 MW -341) 3/6/2006 50 U 50 U 50 U 50 U NR 2,500 U * 50 U 100 U 50 U 380 MW -341) 5/8/2006 250 U 250 U 250 U 250 U NR 13,000 U * 250 U 500 U 250 U 430 MW -341) 10/6/2006 2,000 U 2,000 U 2,000 U 2,000 U NR 100,000 U 2,000 U 4,000 U 21000 U 2,100 MW -34D 11/3/2006 250 U 250 U 250 U 250 U NR 13,000 U * 250 U 500 U 250 U 500 MW -341) 1/23/2007 1,000 U 1,000 U 1,000 U 1,000 U NR 50,000 U 1,000 U 2,000 U 1,000 U 8,700 MW -34D 9/20/2007 5,000 U 5,000 U 5,000 U 5,000 U NR 250,000 U 5,000 U 10,000 U 5,000 U 5,000 U G:\PROJECTS\11811838108M entl_ManAorinB\O&M_RBporls UT,W,W.M8TOW2.& 61 of 88 LJ Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( /L � v C d d A C y C d „ E �i A C L U e a e d i L1 G r o is � V V Er F Fw F F d C MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50,000 50,000 50,000 30,000 4 000 5-0,00-0 5 000 NL 50,000 MW -34 12/8/1999 GW -2 ND ND NR ND ND ND 5,000 U 270,000 NR ND MW -34 3/9/2000 ND ND NR ND ND ND ND 79,000 NR ND MW -34 4/17/2000 ND ND NR ND ND ND ND 49,000 NR ND MW -34 6/12/2000 ND ND NR ND ND ND ND 57,000 NR ND MW -34 6/12/2000 ND ND NR ND ND ND ND 45,000 NR ND MW -34 9/11/2000 ND ND NR ND ND ND ND 50,000 NR ND MW -34 12/12/2000 ND ND NR ND ND ND ND 46,000 NR ND MW -34 3/12/2001 ND ND NR ND ND ND ND 40,000 NR ND MW -34 12/11/2001 ND ND NR ND ND ND ND 66,000 NR ND MW -34 6/28/2002 ND ND NR ND ND ND ND 38,000 NR ND MW -34 10/8/2002 5,000 U 50,000 U NR 50,000 U 5,000 U 7,500 U ND 100,000 NR 10,000 U MW -34 11/20/2002 5,000 U 50,000 U NR 50,000 U 5,000 U 7,500 U 7,500 U 510,000 NR 10,000 U MW -34 2/20/2003 4,000 U 20,000 U 4,000 U 10,000 U 4,000 U 5,000 7,500 U 460,000 4,000 U 4,000 U MW -34 10/13/2003 10,000 U 100,000 U 10,000 U 20,000 U 10,000 U 10,000 U 4,000 U 301,000 20,000 U 20,000 U MW -34 4/28/2004 10,000 U 100,000 U 10,000 U 20,000 U 10,000 U 10,000 U 10,000 U 130,000 10,000 U 10,000 U MW -34 7/15/2004 2,000 U 20,000 U 2,000 U 4,000 U 2,000 U 1,400 J 10,000 U 130,000 2,000 U 2,000 U M1Y-34 10/19/2004 500 U 5,000 U 500 U 1,000 U 500 U 500 U 2,000 U 40,000 500 U 500 U MW -34 12/16/2004 2,500 U 25,000 U 2,500 U 5,000 U 2,500 U 2,500 U 500 U 10,000 2,500 U 2,500 U MW -34 5/3/2005 NR NR NR NR 1,000 U NR 2,500 U 2,500 NR NR MW -34 11/1/2005 400 U 2,000 U 200 U 400 U 200 U 200 U 1,000 U 14,000 200 U 200 U MW -34 5/8/2006 100 U 500 U 50 U 100 U 50 U 50 U 200 U 2,400 50 U 50 U MW -34 5/8/2006 100 U 500 U 50 U 100 U 50 U 50 U 50 U 2,500 50 U 50 U MW -34 11/2/2006 500 U 2,500 U 250 U 300 J 250 U 250 U 50 U 6,600 250 U 250 U MW -34 11/2/2006 500 U 2,500 U 250 U 500 U 250 U 250 U 250 U 7,100 U 250 U 250 U MW -34 4/26/2007 200 U 1,000 U 100 U 200 U 100 U 100 U 250 U 2,600 100 U 100 U MW -34 10/28/200740 U 200 U 20 U 40 U 20 U 20 U 100 U 310 20 U IOU MW -34 3/31/2008 40 U 200 U * 20 U 40 U 20 U 20 U 20 U 1,200 20 U IOU MW -341) 6/30/2005 GW -2 100 U 1,000 U 100 U 200 U 100 U 97 J 20 U 3,700 100 U 100 U MW -34D 11/1/2005 200 U 1,000 U 100 U 200 U 100 U 1,000 100 U 110,000 100 U 100 U MW -34D 3/6/2006 100 U 500 U 50U 100 U 50 U 50 U 100 U 1,700 50 U 50 U MW -34D 5/8/2006 500 U 2,500 U 250 U 300 J 250 U 250 U 50 U 11,000 250 U 250 U MW -34D 10/6/2006 4,000 U 20,000 U 2,000 U * 4,000 U 2,000 U 1,500 J 250 U 150,000 2,000 U 2,000 U MW -34D 11/3/2006 500 U 2,500 U * 250 U 500 U 250 U * 250 U 2,000 U * 7,700 250 U 250 U MW -34D 1/23/2007 2,000 U 10,000 U 1,000 U 2,000 U 1,000 U 840 J 250 U 79,000 1,000 U * 1,000 U MW -34D 9/20/2007 10,000 U 50,000 U 5,000 U 10,000 U 5,000 U 5,000 U 1,000 U 230,000 5,000 U 2,500 U G:I WELTS\118318391G8M_�nd Mon8min8\06M_RepoiblDsbtTsbMSU1sr98\TsbM].ds 62 of 88 �1 u n U Li Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works GAPRWECTM11621039108M_ana MonXoring\08M Repor6lDemTabksVrlaN9\Tabb2.Ns 63 of 88 u Concentration ( /L) Well Location ID Sample Date MCP Ground- water Classif- ication e s o - e tQ 0 `O A c 0� 0 `o A e R o _ 1 = ° d e N C e R r o U p C U c d A d u v MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 49000 1,000 80 5 NL 50,000 29000 NL 400 100 MCP GW -3 20,000 20,000 30 000 20,000 NL 50 000 10 000 NL 10,000 50 000 MW -35 12/8/1999 ND ND ND ND NR ND ND NR NR ND MW -35 3/9/2000 ND ND ND ND NR ND ND NR NR ND MW -35 3/9/2000 ND ND ND ND NR ND ND NR NR ND MW -35 4/17/2000 ND ND ND ND NR ND ND NR NR ND MW -35 6/12/2000 ND ND ND ND 25,000 U ND ND NR NR ND MW -35 9/11/2000 ND ND ND ND 25,000 U ND ND NR NR ND MW -35 12/12/2000 ND ND ND ND 500 U * ND ND NR NR ND MW -35 12/11/2001 GW ND ND ND ND 500 U ND ND NR NR ND MW -35 6/27/2002 -3 ND ND ND ND 250 U * ND ND NR NR ND MW -35 2/20/2003 200 U 200 U 1.0 U 200 U 50 U 1,000 U 200 U NR 200 U 200 U MW -35 10/14/2003 500 U 500 U 500 U 500 U 100,000 U 25,000 U 500 U 1,000 U 500 U 500 U MW -35 10/14/2003 500 U 500 U 500 U 500 U NR 25,000 U 500 U 1,000 U 500 U 500 U MW -35 11/2/2006 IOU IOU IOU IOU* NR 500 U IOU 20 U 23 IOU MW -35 4/26/2007 IOU IOU IOU IOU NR 500 U * IOU 20 U IOU IOU MW -35 9/20/2007 5.0 U 5.0 U 5.0 U 5.0 U NR 250 U 5.0 U IOU 30 5.0 U MW -35 10/28/2007 3.2 13 2.1 1.0 U NR 50U 1.0 U 2.0 U 1.0 U 6.3 MW 35D 3/31/2008 GW -2 2,000 U 2,000 U 2,000 U 2,000 U NR 100,000 U 2,000 U 4,000 U 2,000 U 2,000 U MW -36 12/6/1999 GW -2 ND ND ND ND 200 U ND ND NR NR ND MW -36 12/14/1999 NR NR NR ND 50 U NR NR NR NR NR MW -36 3/14/2000 ND 1.5 ND ND 50 U ND ND NR NR ND MW -36 12/15/2000 ND ND ND ND NR ND ND NR NR ND MW -36 10/18/2002 NR NR NR NR NR NR NR NR NR NR MW -36 2/20/2003 2.0 U 2.0 U 3.0 2.0 U NR IOU 2.0 U NR 2.0 U 11 MW -36 10/13/2003 4.0 U 4.0 U 3.0 J 4.0 U NR 200 U 4.0 U 8.0 U 4.0 U 13 MW -36 4/26/2007 22 4.1 10 1.0 U NR 50 U * 1.0 U 2.0 U * 1.0 U 36 MW -36 7/17/2008 1.0 LLI 0.95 J * 2.6 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 19 GAPRWECTM11621039108M_ana MonXoring\08M Repor6lDemTabksVrlaN9\Tabb2.Ns 63 of 88 u Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( /L) d d �i 0 w a, a fi � Lam' a U " `o ? F E~ � d c v u �y�. C = A o c u .`�. EC F d C -A° a > MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 00,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 150000 MCP GW -3 500 50,000 50,000 50 000 30,000 4,000 50,000 5,000 NL MW -35 12/8/1999 GW -3 ND ND NR ND ND ND 5,000 U 260,000 NR ND MW -35 3/9/2000 ND ND NR ND ND ND ND 240,000 NR ND MW -35 3/9/2000 ND ND NR ND ND ND ND 270,000 NR ND MW -35 4/17/2000 ND ND NR 12,000 ND 7,500 ND 420,000 NR ND MW -35 6/12/2000 ND ND NR ND ND ND ND 360,000 NR ND MW -35 9/11/2000 ND ND NR ND ND 4,700 ND 290,000 NR ND MW -35 12/12/2000 ND ND NR ND ND 6,200 ND 340,000 NR ND MW -35 12/11/2001 ND ND NR ND ND ND ND 220,000 NR ND MW -35 6/27/2002 ND ND NR ND ND ND ND 89,000 NR ND MW -35 2/20/2003 200 U 1,000 U 200 U 500 U 200 U 200 ND 37,000 200 U 200 U MW -35 10/14/2003 500 U 5,000 U 500 U 1,000 U 500 U 500 U 200 U 7,600 1,000 U 1,000 U MW -35 10/14/2003 500 U 5,000 U 500 U 1,000 U 500 U 500 U 500 U 7,700 1,000 U 1,000 U MW -35 11/2/2006 20 U 100 U IOU 20 U IOU IOU 500 U 190 IOU* IOU MW -35 4/26/2007 20 U 100 U IOU 20 U IOU IOU IOU* 280 IOU IOU MW -35 9/20/2007 IOU 25 J 5.0 U IOU 5.0 U 5.0 U IOU 5.0 U 5.0 U 2.5 U MW -35 10/28/2007 2.0 U IOU 1.0 U 2.0 U 4.0 1.0 U 5.0 U 10 1.0 U 0.50 U MW -35D 3/31/2008 GW -2 4,000 U 20,000 U * 2,000 U 4,000 U 2,000 U 2,000 J 1.0 U 130,000 2,000 U 1,000 U MW -36 12/6/1999 GW -2 ND ND NR ND ND ND 2,000 U ND NR ND MW -36 12/14/1999 NR NR NR NR NR NR ND NR NR NR MW -36 3/14/2000 ND ND NR ND ND ND NR ND NR ND MW -36 12/15/2000 ND ND NR ND ND ND ND ND NR ND MW -36 10/18/2002 NR NR NR NR NR NR ND NR NR NR MW -36 2/20/2003 2.0 U IOU 2.0 U 5.0 U 2.0 U 2.0 U NR 19 2.0 U 95 4.0 U 40 U 4.0 U 8.0 U 4.0 U 4.0 U 2.0 U 12 8.0 U 110 L�310/13/2003 4/26/2007 2.0 U 10U* 1.0 U 2.0 U 1.0 U 0.94 J 4.0 U 32 1.0 U * 44 7/17/2008 2.0 U 10 U1.0 U 2.0 U 1.0 U 1.0 U 2.7 3.8 1.0 U 31 G:IPRQIELTS\11fi31039106M mtl Montlorinp\06M_RporlslD�gT�bMSVdW91TeEl�2.tls 64 of 88 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( g/L) u e e d ar e e u ice. C r 0 A e R E v r A s. 0 F v u _ c °a o o O A Ca A N � a ., r 7 u ,. ,_; ,., � pq U U u � t « o A u Ca 'u MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 1009000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20,000 30,000 20,000 NL 50,000 10,000 NL 10,000 50,000 MW -37 12/13/1999 GW -2 ND ND ND ND NR ND ND NR NR 2,100 MW -37 3/13/2000 ND ND ND ND NR ND ND NR NR 15,000 MW -37 6/14/2000 ND ND ND ND NR ND ND NR NR 9,600 MW -37 6/14/2000 ND ND ND ND NR ND ND NR NR 9,300 MW -37 9/14/2000 ND ND ND ND 2,500 U ND ND NR NR 3,300 MW -37 12/14/2000 ND ND ND ND 500 U ND ND NR NR 12,000 MW -37 3/13/2001 ND ND ND ND 50 U ND ND NR NR ND MW -37 12/10/2001 ND 1,300 820 ND 250 U * ND ND NR NR 11,000 MW -37 6/28/2002 ND 600 290 ND 50 U * ND ND NR NR 2,800 MW -37 2/20/2003 40 U 960 550 40 U 100 U h 200 U 40 U NR 40 U 3,400 MW -37 10/13/2003 50 U 579 166 50 U 50 U * 2,500 U 50 U 100 U 50 U 882 MW -37 5/27/2004 IOU 280 39 IOU NR 500 U IOU 20 U IOU 470 MW -37 10/19/2004 1.0 U 220 30 1.0 U NR 50 U 1.0 U 1.2 J 1.0 U 180 MW -37 11/1/2005 5.0 U 72 7.2 5.0 U NR 250 U * 5.0 U IOU 5.0 U 85 MW -37 11/2/2006 1.0 U 54 8.3 2.0 U NR 100 U 2.0 U 2.0 U 1.0 U 68 MW -37 11/2/2006 2.0 U 1 42 H * 5.7 H * 1.0 U * NR 50 U 1.0 U 4.0 U 2.0 U 52 U MW -37 7/17/2008 1.0 U 23 2.9 1.0 U NR 50 U*1 1.0 U 2.0 U 1.0 U 18 MW -38 12/6/1999 GW -2 7,400 9,400 5,100 ND NR ND ND NR NR 79,000 MW -38 3/13/2000 15,000 13,000 8,000 ND NR ND ND NR NR 110,000 MW -38 6/14/2000 67,000 16,000 17,000 ND NR ND ND NR NR 120,000 MW -38 9/14/2000 18,000 8,100 8,400 ND NR ND ND NR NR 79,000 MW -38 12/14/2000 57,000 12,000 13,000 ND 25,000 U ND ND NR NR 110,000 MW -38 12/14/2000 54,000 12,000 ND ND 25,000 U ND ND NR NR 110,000 MW -38 3/13/2001 18,000 6,200 8,700 ND 1,000 U * ND ND NR NR 94,000 MW -38 12/11/2001 9,900 5,700 5,500 ND 1,000 U ND ND NR NR 36,000 MW -38 12/11/2001 9,600 6,300 5,700 ND NR ND ND NR NR 38,000 MW -38 2/20/2003 6,700 3,200 3,700 100 U NR 500 U 100 U NR 100 U 18,000 MW -38 10/14/2003 2,800 1,400 1,600 500 U NR 25,000 U 500 U 1,000 U 500 U 8,000 MW -38 8/9/2004 1,100 1,400 11500 500 U NR 25,000 U 500 U 1,000 U 500 U 6,500 MW -38 11/2/2006 84 130 110 20 U NR 1,000 U * 20 U 40U 20 U 330 MW -38 7/17/2008 850 1,400 * 1,400 24 NR 1,000 U 20 U 40U 20 U 7,800 G: WRWECT6\11621039108M ,.d M,,A,,hg106M_Rwft%D,WTabb,W,a MT,bk2.A, 65 of 88 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( /L) w a u Cw a c A 01 a y y a u u 71 MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50,000 50,000 50,000 30,000 4 000 50 000 5 000 NL 50,000 MW -37 12/13/1999 GW -2 ND ND NR ND ND ND 0.95 J 53,000 NR ND MW -37 3/13/2000 ND ND NR ND ND ND ND 53,000 NR ND MW -37 6/14/2000 ND ND NR ND ND ND ND 100,000 1 NR ND MW -37 6/14/2000 ND ND NR ND ND ND ND 94,000 NR ND MW -37 9/14/2000 ND ND NR ND ND ND ND 32,000 NR ND MW -37 12/14/2000 ND ND I NR ND ND ND ND 92,000 NR ND MW -37 3/13/2001 ND ND NR ND ND ND ND 3,200 NR ND MW -37 12/10/2001 ND ND NR ND ND ND ND 35,000 NR 2,100 MW -37 6/28/2002 ND ND NR ND ND ND ND 7,300 NR 840 MW -37 2/20/2003 40 U 200 U 40 U 100 U 40 U 40 U ND 7,600 40 U 480 MW -37 10/13/2003 50 U 500 U 50 U 100 U 50 U 50 U 70 296 100 U 1,030 MW -37 5/27/2004 IOU 100 U IOU 20 U IOU IOU 35 J 450 IOU 700 MW -37 10/19/2004 1.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 19 140 1.0 U 490 MW -37 11/1/2005 IOU 50 U 5.0 U IOU 5.0 U 5.0 U 16 17 5.0 U 140 MW -37 11/2/2006 4.0 U IOU 2.0 U 4.0 U 2.0 U 1.0 U 6.4 4.5 2.0 U 130 MW -37 11/2/2006 2.0U 20U 1.0U 2.0U 1.0U 2.0U H 4.4U 4.2U 1.0U* 120U MW -37 7/17/2008 2.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 7.9 * 1.7 1.0 U 84 MW -38 12/6/1999 GW -2 ND ND NR ND ND 2,500 4.1 71,000 NR ND MW -38 3/13/2000 ND ND NR ND ND 4,000 ND 58,000 NR ND MW -38 6/14/2000 ND ND NR ND ND 6,800 ND 3,200 NR ND MW -38 9/14/2000 ND ND NR ND ND 3,200 ND 34,000 NR ND MW -38 12/14/2000 ND ND NR 14,000 ND 5,400 ND ND NR ND MW -38 12/14/2000 ND ND NR ND ND 5,900 ND 1,300 NR ND MW -38 3/13/2001 ND ND NR ND ND 3,200 1,500 58,000 NR ND MW -38 12/11/2001 ND ND NR ND ND 1,800 ND ND NR ND MW -38 12/11/2001 ND ND NR ND ND ND ND ND NR ND MW -38 2/20/2003 100 U 500 U 100 U 200 U 100 U 1,100 ND 100 100 U 100 U MW -38 10/14/2003 500 U 5,000 U 500 U 1,000 U 500 U 500 U 100 U 500 U 1,000 U 1,000 U MW -38 8/9/2004 500 U 5,000 U 500 U 1,000 U 500 U 500 U 500 U 500 U 500 U 500 U MW -38 11/2/2006 40 U 200 U * 20 U 40 U 20 U * 20 U 500 U 400 20 U 19 J MW -38 7/17/2008 40 U 200 U 20 U 40 U 20 U 190 20 U 620 20 U 420 GAPROJECTS111621039%06M ,, M,,kli V\06M R,p MQ UT&W W,N91T,E 2A, 66 Of 88 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works G:1PRWECT9\1162103910&M e , M.,K,m glO&M R,pMMV WT6k Wv 91Ta W.tl 67 of 88 Concentration ( g/L) Well Location ID Sample Date MCP Ground- water Classif- kation c 0 3 C F„ 0 _ s - O .; 0 3 s u A .; o 3 r u O x e o A a Q e a o U c o U I c u O v MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20 000 20 000 30,000 20,000 NL 50,000 10,000 NL 10,000 50,000 MW -39 12/6/1999 GW -2 ND ND ND ND 5,000 U ND ND NR NR 110 MW -39 3/14/2000 ND ND ND ND 10,000 U ND ND NR NR ND MW -39 6/14/2000 ND ND ND ND 10,000 U ND ND NR NR 200 MW -39 12/14/2000 ND ND ND ND 5,000 U * ND ND NR NR ND MW -39 3/13/2001 ND ND ND ND 10,000 U ND ND NR NR ND MW -39 2/20/2003 IOU IOU 5.0 U IOU 100,000 U 50 U IOU NR IOU 30U MW -39 10/14/2003 100 U 100 U 100 U 100 U NR 5,000 U 100 U 200 U 100 U 100 U MW -39 11/2/2005 200 U 200 U * 200 U 200U NR 10,000 U 200 U 400 U 200 U 270 MW -39 11/2/2005 200 U 200 U * 200 U 200 U NR 10,000 U 200 U 400 U 200 U 270 MW -39 11/2/2006 100 U 100 U 100 U 100 U NR 5,000 U * 100 U 200 U 100 U 96 J MW -39 4/27/2007 200 U 200 U 200 U 200 U NR 10,000 U * 200 U 400 U * 200 U 240 MW -39 4/1/2008 2,000 U 2,000 U 2,000 U 2,000 U NR 100,000 U 2,000 U 4,000 U 2,000 U 1,000 J MW -40 12/8/1999 ND ND ND ND 25,000 U ND ND NR NR ND MW -40 3/14/2000 GW -2 ND ND ND ND 10,000 U ND ND NR NR ND MW -40 6/14/2000 ND ND ND ND 25,000 U * ND ND NR NR ND MW -40 12/14/2000 ND ND ND ND 25,000 U ND ND NR NR 8,000 MW -40 12/10/2001 ND ND ND ND 25,000 U * ND ND NR NR 8,700 MW -40 2/20/2003 400 U 400 U 200 U 400 U 25,000 U * 2,000 U 400 U NR 400 U 400 U MW -40 10/15/2003 500 U 500 U 500 U 500 U NR 25,000 U 500 U 1,000 U 500 U 500 U MW -40 5/8/2006 200 U 200 U * 200 U 200 U NR 10,000 U * 200 U 400 U 200 U 380 MW -40 11/2/2006 500 U 500 U 500 U 500 U NR 25,000 U * 500 U 1,000 U 500 U 960 MW -40 4/27/2007 500 U 500 U 500 U 500 U NR 25,000 U * 500 U 1,000 U 500 U 930 MW -40 10/28/2007 500 U 500 U 500 U 500 U NR 25,000 U 500 U 1,000 U 500 U 2,200 MW -40 4/1/2008 210 J 500 U 180 J 500 U NR 25,000 U * 500 U 1,000 U 500 U 2,700 MW -41 12/15/1999 ND ND ND ND NR ND ND NR NR ND MW -41 3/9/2000 ND ND ND ND NR ND ND NR NR 3.3 MW -41 6/12/2000 ND ND ND ND 250 U ND ND NR NR 6.7 MW -41 9/13/2000 ND ND ND ND 50 U ND ND NR NR 7.1 MW -41 12/12/2000 GW -2 ND ND ND ND 50 U ND ND NR NR ND MW -41 12/11/2001 ND ND ND ND 1,000 U ND ND NR NR ND MW -41 6/27/2002 ND ND ND ND 1,000 U * ND ND NR NR 5.4 MW -41 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U 2,500 U IOU 2.0 U NR 2.0 U 2.0 MW -41 10/14/2003 5.0 U 5.0 U 5.0 U 5.0 U NR 250 U 5.0 U IOU 5.0 U 5.0 U MW -41 10/28/20071.0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 0.46 J F-,. 0.37 J MW -4/ 10/28/2007 0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 0.43 J 0.35 J G:1PRWECT9\1162103910&M e , M.,K,m glO&M R,pMMV WT6k Wv 91Ta W.tl 67 of 88 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration (µ /L) d c 07 u d � C U o A = �« C _ A e e a « i = a u u E3 i F F H F > MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50,000 50,000 50,000 30,000 4,000 50,000 5,000 NL 50,000 MW -39 12/6/1999 GW -2 ND ND NR ND ND ND 20 U 14,000 NR ND MW -39 3/14/2000 ND ND NR ND ND ND ND 17,000 NR ND MW -39 6/14/2000 ND ND NR 1,000 ND ND ND 27,000 NR ND MW -39 12/14/2000 ND ND NR ND ND ND ND 1,200 NR ND MW -39 3/13/2001 ND ND NR ND ND ND ND 12,000 NR ND MW -39 2/20/2003 IOU 50 U IOU 20 U IOU IOU ND 2,400 IOU IOU MW -39 10/14/2003 100 U 1,000 U 100 U 200 U 100 U 100 U IOU 2,100 200 U 200 U MW -39 11/2/2005 400 U 2,000 U 200 U 400 U 200 U 200 U 100 U 1 12,000 200 U 200 U MW -39 11/2/2005 400 U 2,000 U 200 U 400 U 200 U 200 U 200 U 12,000 200 U 200 U MW -39 11/2/2006 200 U 1,000 U * 100 U 200 U 100 U * 100 U 200 U 3,100 100 U 100 U MW -39 4/27/2007 400 U 2,000 U * 200 U 400 U 200 U 200 U 100 U 7,400 200 U * 200 U MW -39 4/1/2008 4,000 U 20,000 U * 2,000 U 4,000 U 2,000 U 2,000 U 200 U 12,000 2,000 U 1,000 U MW -40 12/8/1999 GW -2 ND ND NR ND ND 1,900 2,000 U 74,000 NR ND MW -40 3/14/2000 ND ND NR ND ND 4,200 ND 160,000 NR ND MW -40 6/14/2000 ND ND NR ND ND 4,000 ND 140,000 NR ND MW -40 12/14/2000 ND ND NR ND ND 4,300 ND 140,000 NR ND MW -40 12/10/2001 ND ND NR ND ND 4,900 ND 220,000 NR ND MW -40 2/20/2003 400 U 2,000 U 400 U 1,000 U 400 U 400 U ND 50,000 400 U 400 U MW -40 10/15/2003 500 U 5,000 U 500 U 1,000 U 500 U 500 U 400 U 14,000 1,000 U 1,000 U MW -40 5/8/2006 400 U 2,000 U 200 U 530 200 U 200 U 500 U 7,200 200 U * 200 U MW -40 11/2/2006 1,000 U 5,000 U * 500 U 1,000 U 500 U * 500 U 200 U 14,000 500 U 500 U MW -40 4/27/2007 1,000 U 5,000 U 500 U 1,000 U 500 U 500 U 500 U 8,700 500 U 500 U MW -40 10/28/2007 1,000 U 5,000 U 500 U 1,000 U 500 U 500 U 500 U 16,000 500 U 250 U MW -40 4/1/2008 1,000 U 5,000 U * 500 U 1,000 U 500 U 660 500 U 19,000 500 U 250 U MW -41 12/15/1999 GW -2 ND ND NR ND ND 11 340 J 250 NR ND MW -41 3/9/2000 ND ND NR ND ND ND ND 190 NR ND MW -41 6/12/2000 ND ND NR ND ND ND ND 480 NR ND MW -41 9/13/2000 ND ND NR ND ND ND ND 500 NR ND MW -41 12/12/2000 ND ND NR ND ND ND ND 420 NR ND MW -41 12/11/2001 ND ND NR ND ND ND ND 190 NR ND MW -41 6/27/2002 ND ND NR ND ND ND ND 400 NR ND MW -41 2/20/2003 2.0 U IOU 2.0 U 5.0 U 2.0 U 2.0 U ND 150 2.0 U 2.0 U MW -41 10/14/20031 1 5.0 U 50U 5.0 U IOU 5.0 U 5.0 U 2.0 U 110 IOU IOU MW -41 10/28/2007 2.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 5.0 U 14 1.0 U 0150 U MW -41 10/28/2007 2.0 U 10 U 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 15 1.0 U 0.50 U G:1 WELTS\11621N6106M Ind_MonkminplGBM R,poMM)sbT,b ,Wrt661T,bk2.d 68 of 88 n f u n i u u n Lj I (-1 L 7 L F, Lj Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works O:%PRO.IECTS\11621039108M_and_ManRorng\OeM Rapohs�DadTabksVAaN9\Tebk2.tls 69 of 88 1✓ Concentration (µg/L) Well Location ID Sample Date MCP Ground- water Classif- ication e w F - C eQ A ~ C g! A C R a c Q s o U o U � t d v MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20,000 30,000 20,000 NL 50 000 10 000 NL 10,000 50,000 MW -41D 6/30/2005 GW -2 20 U 20-U 20 U 20 U NR 1,000 U 20 U 40 U 20 U 1,200 MW -41D 11/2/2005 20 U 20 U 20 U 20 U NR 1,000 U * 20 U 40 U 20 U 1,400 MW -41D 5/8/2006 50 U 50U 50 U 50 U NR 2,500 U * 50 U 100 U 50 U 1,600 MW -42 12/17/1999 ND ND ND ND NR ND ND NR NR ND MW -42 1/5/2000 ND ND ND ND NR ND ND NR NR ND MW -42 3/8/2000 ND ND ND ND NR ND ND NR NR ND MW -42 4/17/2000 ND ND ND ND NR ND ND NR NR ND MW -42 6/12/2000 ND ND ND ND NR ND ND NR NR ND MW -42 9/13/2000 ND ND ND ND NR ND ND NR NR ND MW -42 12/11/2000 ND ND ND ND NR ND ND NR NR ND MW -42 3/12/2001 ND ND ND ND NR ND ND NR NR ND MW -42 3/12/2001 ND ND ND ND 1,000,000 U ND ND NR NR ND MW -42 12/12/2001 ND ND ND ND 1,000,000 U ND ND NR NR ND MW -42 7/2/2002 GW -3 ND ND ND ND 1,200,000 U ND ND NR NR ND MW -42 10/8/2002 5,000 U 7,500 U 5,000 U 5,000 U 500,000 U 50,000 U 5,000 U NR 7,500 U 5,000 U MW -42 11/20/2002 5,000 U 7,500 U 5,000 U 5,000 U 250,000 U 50,000 U 5,000 U NR 7,500 U 5,000 U MW -42 2/20/2003 4,000 U 4,000 U 2,000 U 4,000 U 250,000 U 20,000 U 4,000 U NR 4,000 U 4,000 U MW -42 10/14/2003 20,000 U 20,000 U 20,000 U 20,000 U 250,000 U 1,000,000 U 20,000 U 40,000 U 20,000 U 20,000 U MW -42 10/14/2003 20,000 U 20,000 U 20,000 U 20,000 U NR 1,000,000 U 20,000 U 40,000 U 20,000 U 20,000 U MW -42 3/16/2004 20,000 J 25,000 U 25,000 U 25,000 U 10,000 U 1,200,000 U 25,000 U 50,000 U 25,000 U 71,000 MW -42 4/28/2004 10,000 U 10,000 U 10,000 U 10,000 U 500 U 500,000 U 10,000 U 20,000 U 10,000 U 10,000 U MW -42 5/13/2004 5,000 U 5,000 U 5,000 U 5,000 U 5,000 U 250,000 U 5,000 U 10,000 U 5,000 U 5,000 U MW -42 7/15/2004 4,000 J 5,000 U 2,600 J 5,000 U NR 250,000 U 5,000 U 10,000 U 5,000 U 12,000 MW -42 7/15/2004 2,600 J 5,000 U 5,000 U 5,000 U NR 250,000 U 5,000 U 10,000 U 5,000 U 19,000 MW -42 5/3/2005 100 U NR NR NR NR NR NR NR NR 100 U MW -42 4/26/2007 200 U 200 U 200 U 200 U NR 10,000 U * 200 U 400 U * 200 U 200 U MW -42 4/1/2008 9.4 J IOU IOU IOU NR 500 U IOU 20 U 3.7 J IOU MW -42D 1 6/30/2005 GW -3 100 U 100 U 100 U 100 U NR 5,000 U 57 J 200 U 100 U 100 U O:%PRO.IECTS\11621039108M_and_ManRorng\OeM Rapohs�DadTabksVAaN9\Tebk2.tls 69 of 88 1✓ Table 2 Historical Groundwater Analytical Results for VOCs (gglL) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( g/L) v 00 u e A ° C c d Y � = a U -7 y w c A a, a y A d R E a " 0 r °o w e 0 3 a, C -A° U > MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50,000 50,000 50,000 30,000 4 000 -50-,0-0-0- 5,000 NL 50 000 MW -41D 6/30/2005 GW -2 20 U 200 U 20 U 40 U 20 U 35 1.0 U 950 20U 20 U MW -41D 11/2/2005 40 U 200 U 20 U 40 U 20 U 20 18 J 640 20U 20 U MW -41D 5/8/2006 100 U 500 U 50 U 100 U 50 U 50 U 12 J 700 50U 50 U MW -42 12/17/1999 GW -3 ND ND NR ND ND ND 50 U 450,000 NR ND MW -42 1/5/2000 ND ND NR ND ND ND ND 820,000 NR ND MW -42 3/8/2000 ND ND NR ND ND 19,000 ND 690,000 NR ND MW -42 4/17/2000 ND ND NR ND ND ND ND 340,000 NR ND MW -42 6/12/2000 ND ND NR ND ND 17,000 ND 950,000 NR ND MW -42 9/13/2000 ND ND NR ND ND 15,000 ND 610,000 NR ND MW -42 12/11/2000 ND ND NR ND ND 12,000 ND 530,000 NR ND MW -42 3/12/2001 ND ND NR ND ND ND ND 330,000 NR ND MW -42 3/12/2001 ND ND NR ND ND 26,000 ND 1,000,000 NR ND MW -42 12/12/2001 ND ND NR ND ND 11,000 ND 540,000 NR ND MW -42 7/2/2002 ND ND NR ND ND 4,400 ND 250,000 NR ND MW -42 10/8/2002 5,000 U 50,000 U NR 50,000 U 5,000 U 14,000 ND 840,000 NR 10,000 U MW -42 11/20/2002 5,000 U 50,000 U NR 50,000 U 5,000 U 14,000 7,500 U 850,000 NR 10,000 U MW -42 2/20/2003 4,000 U 20,000 U 4,000 U 10,000 U 4,000 U 12,000 7,500 U 840,000 4,000 U 4,000 U MW -42 10/14/2003 20,000 U 200,000 U 20,000 U 40,000 U 20,000 U 11,000 J 4,000 U 520,000 40,000 U 40,000 U MW -42 10/14/2003 20,000 U 200,000 U 20,000 U 40,000 U 20,000 U 10,000 J 20,000 U 550,000 40,000 U 40,000 U MW -42 3/16/2004 25,000 U 250,000 U 25,000 U 50,000 U 25,000 U 25,000 U 20,000 U 390,000 50,000 U 7,500 U MW -42 4/28/2004 10,000 U 100,000 U 10,000 U 20,000 U 10,000 U 10,000 U 25,000 U 140,000 10,000 U 10,000 U MW -42 5/13/2004 5,000 U 50,000 U 5,000 U 10,000 U 5,000 U 5,000 U 10,000 U 100,000 5,000 U 5,000 U MW -42 7/15/2004 5,000 U 50,000 U 5,000 U 10,000 U 5,000 U 5,000 U 5,000 U 230,000 5,000 U 5,000 U MW -42 7/15/2004 5,000 U 50,000 U 5,000 U 10,000 U 5,000 U 5,000 U 5,000 U 200,000 5,000 U 5,000 U MW -42 5/3/2005 NR NR NR NR 100 U NR 5,000 U 100 U NR NR MW -42 4/26/2007 400 U 2,000 U * 200 U 400 U 200 U 200 U 100 U 2,900 200 U * 200 U MW -42 4/1/2008 20 U 100 U * IOU 20 U 5.4 J IOU 200 U 8.0 J IOU 5.0 U MW -42D 6/30/2005 GW -3 100 U 1,000 U 100 U200 U 100 U 3,800 IOU 140 100 U 100 U G:IKOJECTSMU1039=Man, M,,K.,wgl0 M RW.ft .MT.bla W.A SITebM2.M 70 of 88 u F r Li n u i lJ I Lt I V n I r u n IJ r Lj Table 2 Historical Groundwater Analytical Results for VOCs (pg/L) Merrimack Valley Works 1 G:WROJECT81118I1838\08M end Monhomp108M Reporh\DaleTebbsV.1eN91Tabb2 ds 71 Of 88 Lf Concentration (pg/L) Well Location ID Sample Date MCP Ground- water Classif- ication C °7 o .w r 0 .� u A 0 .ti 00 Z 0 N R Q C a"1 U 0 U C r o u 'u MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20,000 30 000 20,000 NL 50 000 10 000 NL 10,000 MW -43 1/11/2000 ND ND ND ND 10,000 U ND ND NR NR __50.,000 ND MW -43 6/14/2000 ND ND ND ND 1,200 U ND ND NR NR ND MW -43 9/12/2000 ND ND ND ND 1,300 U * ND ND NR NR ND MW -43 12/15/2000 ND ND ND ND 500 U ND ND NR NR ND MW -43 3/14/2001 ND ND ND ND 50 U ND ND NR NR ND MW -43 2/20/2003 40 U 40 U 20 U 40 U 50 U 200 U 40 U NR 40 U 40 U MW -43 10/13/2003 200 U 200 U 200 U 200 U 50 U 10,000 U 200 U 400 U 200 U 200 U MW -43 4/21/2005 GW -2 25 U 25 U 25 U 25 U 1,000 U 1,200 U 25 U 50 U 25 U 25 U MW -43 11/2/2005 25 U 25 U 25 U 25 U 50 U 1,300 U * 25 U 50 U 25 U 25 U MW -43 5/9/2006 IOU IOU IOU IOU NR 500 U * IOU 20 U IOU IOU MW -43 11/2/2006 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.8 MW -43 11/2/2006 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.8 MW -43 4/27/2007 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U * 1.0 U 2.0 U * 1.0 U 0.96 J MW -43 10/25/2007 18 J 20 U 20 U 20 U NR 1,000 U 20 U 40 U 20 U 20 U MW -43 7/17/2008 1.0 U 1.0 U * 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 0.73 J MW -44 1/11/2000 ND ND ND ND NR ND ND NR NR ND MW -44 9/12/2000 ND ND ND ND 10,000 U ND ND NR NR ND MW -44 9/12/2000 ND ND ND ND 2,500 U ND ND NR NR ND MW -44 12/15/2000 ND ND ND ND 2,500 U * ND ND NR NR ND MW -44 3/14/2001 ND ND ND ND 100,000 U ND ND NR NR ND MW -44 3/14/2001 ND ND ND ND 500 U ND ND NR NR ND MW -44 2/20/2003 GW -2 IOU IOU 5.0 U IOU 500 U 50 U IOU NR IOU IOU MW -44 10/13/2003 200 U 200 U 200 U 200 U 50 U * 10,000 U 200 U 400 U 200 U 200 U MW -44 4/21/2005 50 U 50 U 50 U 50 U NR 2,500 U 50 U 100 U 50 U 50 U MW -44 11/2/2005 50 U 50 U 50 U 50 U NR 2,500 U * 50 U 100 U 50 U 50 U MW -44 5/9/2006 2,000 U 2,000 U 2,000 U 2,000 U NR 100,000 U * 2,000 U 4,000 U 2,000 U 2,000 U MW -44 4/27/2007 IOU IOU IOU IOU NR 500 U * IOU 20 U * IOU IOU MW -44 10/25/2007 7.6 J IOU IOU IOU NR 500 U IOU 20 U ]0 U IOU MW -44 7/17/2008 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U * 1.0 U 2.0 U 1.0 U 1.0 U 1 G:WROJECT81118I1838\08M end Monhomp108M Reporh\DaleTebbsV.1eN91Tabb2 ds 71 Of 88 Lf Table 2 Historical Groundwater Analytical Results for VOCs (pg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( g/L) a a y d d a o � a L ? o F F .`�. F H > MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50 000 50 000 50,000 30,000 4 000 50,000 5,000 NL 50 000 MW -43 1/11/2000 GW -2 ND ND NR ND ND ND 100 U 4,100 NR ND MW -43 6/14/2000 ND ND NR ND ND ND ND 21,000 NR ND MW -43 9/12/2000 ND ND NR ND ND ND ND 18,000 NR ND MW -43 12/15/2000 ND ND NR 6,900 ND ND ND 27,000 NR ND MW -43 3/14/2001 ND ND NR 1,200 ND ND ND 16,000 NR ND MW -43 2/20/2003 40 U 200 U 40 U 100 U 40 U 40 U ND 5,700 40 U 40 U MW -43 10/13/2003 200 U 2,000 U 200 U 400 U 200 U 200 U 40 U 3,400 400 U 400 U MW -43 4/21/2005 25 U 250 U 25 U 50 U 25 U 25 U 200 U 1,600 25 U 25 U MW -43 11/2/2005 50 U 250 U 25 U 50 U 25 U 25 U 25 U 260 25 U 25 U MW -43 5/9/2006 20 U 100 U IOU 12 J 2.0 J IOU 25 U 180 IOU IOU MW -43 11/2/2006 2.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U IOU 43 1.0 U 1.0 U MW -43 11/2/2006 2.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 44 1.0 U 1.0 U MW -43 4/27/2007 2.0 U 10 U * 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 46 1.0 U * 1.0 U MW -43 10/25/2007 40 U 200 U 20 U 7.1 J 20 U 20 U 1.0 U 460 20 U IOU MW -43 7/17/2008 2.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 20U 55 1.0 U 0.50 U MW -44 1/11/2000 GW -2 ND ND NR ND ND ND 1.0 U 5,900 NR ND MW -44 9/12/2000 ND ND NR ND ND ND ND 69,000 NR ND MW -44 9/12/2000 ND ND NR ND ND ND ND 57,000 NR ND MW -44 12/15/2000 ND ND NR 4,500 ND ND ND 62,000 NR ND MW -44 3/14/2001 ND ND NR ND ND ND ND 30,000 NR ND MW -44 3/14/2001 ND ND NR ND ND ND ND 36,000 NR ND MW -44 2/20/2003 IOU 50 U IOU 20 U IOU IOU ND 820 IOU IOU MW -44 10/13/2003 200 U 2,000 U 200 U 400 U 200 U 200 U IOU 5,200 400 U 400 U MW -44 4/21/2005 50 U 500 U 50 U 100 U 26 J 50 U 200 U 3,100 50 U 50 U MW -44 11/2/2005 100 U 500 U 50 U 100 U 130 50 U 50 U 20,000 50 U 50 U MW -44 5/9/2006 4,000 U 20,000 U 2,000 U 4,000 U 2,000 U 2,000 U 50 U 71,000 2,000 U 2,000 U MW -44 4/27/2007 20 U 100 U * IOU 20 U IOU IOU 2,000 U 140 IOU* IOU* MW -14 10/25/2007 20 U 100 U IOU 20U IOU IOU IOU 310 IOU 5.0 U MW 44 7/17/2008 2.0 U 10 U 1.0 U 2.0 U 1.0 U 1.0 U 10 U 73 1.0 U 0.50 U G1PROJECTS\11631 72 of 88 n Li U n u } u M u n 1J r LJ r Lr U l� n t n V Table 2 Historical Groundwater Analytical Results for VOCs (gg/L) Merrimack Valley Works 1 G'IPRQIEGT6111621MMMM_antl MonXarbB108M fteDor6lGadTebbsWaA9lTabb2tls 73 of 88 I -j Concentration (µ L) Well Location ID Sample Date MCP Ground- water Classif- ication C t 0 C 3 ,: C 3 t .; 10, _ r. N u R u d d oa 1. U q 1d U � t Ca I 'v MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20,000 30,000 20,000 NL 50,000 10,000 NL 10,000 50,000 MW -45 1/20/2000 ND ND ND ND NR ND ND NR NR ND MW -45 3/8/2000 ND ND ND ND NR ND ND NR NR ND MW -45 4/17/2000 ND ND ND ND NR ND ND NR NR ND MW -45 6/12/2000 ND ND ND ND NR ND ND NR NR ND MW -45 9/11/2000 ND ND ND ND NR ND ND NR NR ND MW -45 12/11/2000 ND ND ND ND NR ND ND NR NR ND MW -45 3/12/2001 ND ND ND ND 1,000,000 U ND ND NR NR ND MW -45 12/11/2001 GW ND ND ND ND 1,000,000 U ND ND NR NR ND MW -45 6/28/2002 ND ND ND ND 500,000 U ND ND NR NR ND MW -45 10/8/2002 2,500 U 3,800 U 2,500 U 2,500 U 250,000 U 25,000 U 2,500 U NR 3,800 U 3,200 MW -45 11/20/2002 -3 5,000 U 7,500 U 5,000 U 5,000 U 250,000 U 50,000 U 5,000 U NR 7,500 U 5,000 U MW -45 2/20/2003 4,000 U 4,000 U 2,000 U 4,000 U NR 20,000 U 4,000 U NR 4,000 U 4,000 U MW -45 10/13/2003 20,000 U 20,000 U 20,000 U 20,000 U 500 U * 1,000,000 U 20,000 U 40,000 U 20,000 U 20,000 U MW -45 10/13/2003 20,000 U 20,000 U 20,000 U 20,000 U 500 U * 1,000,000 U 20,000 U 40,000 U 20,000 U 20,000 U MW -45 4/28/2004 10,000 U 10,000 U 10,000 U 10,000 U NR 500,000 U 10,000 U 20,000 U 10,000 U 10,000 U MW -45 7/15/2004 6,700 2,500 J 4,200 J 5,000 U NR 250,000 U 5,000 U 10,000 U 5,000 U 30,000 MW -45 10/4/2004 3,600 J 5,000 U 5,000 U 5,000 U NR 250,000 U 5,000 U 10,000 U 5,000 U 8,300 MW -45 5/3/2005 25 U NR NR NR NR NR NR NR NR 60 MW -45 10/28/2007 IOU 10 U IOU IOU NR 500 U IOU 20 U IOU 380 MW -45 4/1/2008 10 IOU IOU IOU NR 500 U *1 IOU 20U IOU 170 1 G'IPRQIEGT6111621MMMM_antl MonXarbB108M fteDor6lGadTebbsWaA9lTabb2tls 73 of 88 I -j Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works G1PR0JECTSMR1939\06M_74 of 88 Concentration ( /L) o d MCP > U v a Ground- d Well water71 Location Sample Classif- Q ,��, = e ID Date ication S F F .R`. F F MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 RONDO 50 000 50 000 30 000 4 000 50 000 5,000 NL 50,000 MW -45 1/20/2000 GW -3 ND ND NR ND ND 11,000 1.0 U 1,000,000 NR ND MW -45 3/8/2000 ND ND NR ND ND ND ND 260,000 NR ND MW -45 4/17/2000 ND ND NR ND ND ND ND 700,000 NR ND MW -45 6/12/2000 ND ND NR ND ND ND ND 520,000 NR ND MW -45 9/11/2000 ND ND NR ND ND ND ND 820,000 NR ND MW -45 12/11/2000 ND ND NR 160,000 ND 33,000 ND 2,200,000 NR ND MW -45 3/12/2001 ND ND NR ND ND ND ND 860,000 NR ND MW -45 12/11/2001 ND ND NR ND ND ND ND 1,500,000 NR ND MW -45 6/28/2002 ND ND NR ND ND 6,300 ND 130,000 NR ND MW -45 10/8/2002 2,500 U 25,000 U NR 25,000 U 2,500 U 7,400 ND 500,000 NR 5,000 U MW -45 11/20/2002 5,000 U 50,000 U NR 50,000 U 5,000 U 21,000 3,800 U 1,200,000 NR 10,000 U MW -45 2/20/2003 4,000 U 20,000 U 4,000 U 10,000 U 4,000 U 13,000 7,500 U 760,000 4,000 U 4,000 U MW -45 10/13/2003 20,000 U 200,000 U 20,000 U 40,000 U 20,000 U 20,000 U 4,000 U 350,000 40,000 U 40,000 U MW -45 10/13/2003 20,000 U 200,000 U 20,000 U 40,000 U 20,000 U 20,000 U 20,000 U 330,000 40,000 U 40,000 U MW -45 4/28/2004 10,000 U 100,000 U 10,000 U 20,000 U 10,000 U 10,000 U 20,000 U 130,000 10,000 U 10,000 U MW -45 7/15/2004 5,000 U 50,000 U 5,000 U 10,000 U 5,000 U 2,500 J 10,000 U 290,000 5,000 U 5,000 U MW -45 10/4/2004 5,000 U 50,000 U 5,000 U 10,000 U 5,000 U 5,000 U 5,000 U 130,000 5,000 U 5,000 U MW -45 5/3/2005 NR NR NR NR 2.0 NR 5,000 U 150 NR NR MW -45 10/28/2007 20U 100 U IOU 20 U IOU IOU 32 280 IOU 5.0 U MW -45 4/1/2008 20U 100 U ` IOU 20 U 8.4 J 8.2 J 4.7 J 190 IOU 5.0 U G1PR0JECTSMR1939\06M_74 of 88 n r v Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works G %PfiGJEGTS\11621p39\06M_end_Moniloriny\G8M Repor6�DebTeEbsU1�N91Tabb2 tls 75 of 88 ll V Concentration (µ L) Well Location ID Sample Date MCP Ground- water Classif- ication C _ iv F _ 0 `o 00 00 _ u d R _ u e o e d Q 0 G 0 U pp o U C = iv A A MCP UCL 100,000 100,000 1009000 100,000 NL 100,000 1009000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20 000 30,000 20,000 NL 50 000 10 000 NL 10,000 50,000 MW -46 1/28/2000 ND ND ND ND NR ND ND NR NR 21 MW -46 3/8/2000 ND ND ND ND NR ND ND NR NR 4.0 MW -46 6/12/2000 ND ND ND ND 50 U ND ND NR NR 1.7 MW -46 9/11/2000 GW -3 ND ND ND ND 50 U * ND ND NR NR 1.0 MW -46 12/12/2000 ND ND ND ND 50 U * ND ND NR NR 1.8 MW -46 12/12/2000 ND ND ND ND 50 U ND ND NR NR 1.7 MW -46 3/13/2001 ND ND ND ND NR ND ND NR NR 1.4 MW -46 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U NR IOU 2.0 U NR 2.0 U 2.0 U MW -46 10/14/2003 1 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -46 11/2/2006 1.0 U 1.0 U 1.0 U 1.0 U * NR 50 U 1.0 U 2.0 U 1.0 U 6.6 MW -46 11/2/2006 1.0 U 1.0 U 1.0 U 1.0 U * NR 50 U 1 1.0 U 2.0 U 1.0 U 11 MW -46D 6/30/2005 1 GW -3 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.4 MW -47 7/26/2000 ND ND ND ND NR ND ND NR NR 110 MW -47 9/13/2000 GW -3 ND ND ND ND 500 U ND ND NR NR 160 MW -47 12/15/2000 ND ND ND ND 50 U ND ND NR NR 130 MW -47 12/15/2000 ND ND ND ND 50 U ND ND NR NR 110 MW -47 3/13/2001 ND ND ND ND NR ND ND NR NR 150 MW -47 12/19/2001 ND ND ND ND NR ND ND NR NR 200 MW -47 2/20/2003 IOU IOU 5.0 U IOU NR 50 U IOU NR IOU 120 MW -47 10/14/2003 IOU IOU IOU IOU NR 500 U IOU 20 U IOU 12 MW -47 10/20/20 41 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U LOU U 2.0 U 1.0 U 1.0 U MW -47 11/2/2005 1.0 U 1.0 U * 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -48 7/26/2000 ND ND ND ND NR ND ND NR NR 42,000 MW -48 12/14/2000 ND ND ND ND NR ND ND NR NR 37,000 MW -48 3/13/2001 ND ND ND ND 250,000 U ND ND NR NR 36,000 MW -48 12/10/2001 ND ND ND ND 25,000 U ND ND NR NR 64,000 MW -48 7/3/2002 ND ND ND ND 2,500 U ND ND NR NR 29,000 MW -48 10/8/2002 2,500 U 3,800 U 2,500 U 2,500 U 5,000 U 25,000 U 2,500 U NR 3,800 U 32,000 MW -48 11/20/2002 GW -2 2,500 U 3,800 U 2,500 U 2,500 U 250 U * 25,000 U 2,500 U NR 3,800 U 37,000 MW -48 2/20/2003 2,100 2,000 2,400 400 U 1,000 U * 2,000 U 400 U NR 400 U 41,000 MW -48 10/14/2003 15,000 5,000 U 2,700 J 5,000 U 50 U * 250,000 U 5,000 U 10,000 U 5,000 U 18,000 MW -48 4/29/2004 2,400 4,000 1,400 500 U 25,000 U 25,000 U 500 U 1,000 U 500 U 18,000 MW -48 7/15/2004 50 U 470 110 50 U 25,000 U 2,500 U 50 U 100 U 50 U 2,000 MW -48 4/21/2005 100 U 150 100 U 100 U 5,000 U 5,000 U 100 U 200 U 100 U 1,800 MW -48 11/1/2005 5.0 U 87 4.2 J 5.0 U 1 13,000 U * 250 U * 5.0 U IOU 5.0 U 230 MW -48 11/2/2006 20 U 68 20 U 20 U 12,000 U * 1,000 U * 20 U 40 U 20 U 180 MW -48 7/17/2008 1.0 U 35 1.0 U 1.0 U 2,500 U 50 U * 1.0 U 1.5 J 1.0 U 23 G %PfiGJEGTS\11621p39\06M_end_Moniloriny\G8M Repor6�DebTeEbsU1�N91Tabb2 tls 75 of 88 ll V Table 2 Historical Groundwater Analytical Results for VOCs (pg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( g/L � d a O d 7 d V d d 40, y U c u dL A '> w = r i , C �i a « « L ? a u u E FMCPUCL C 100,000 100,000 100,000 100,000 1 LOOO 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 8,000 90 30 NL 2 MCP GW -3 500 50 000 50 000 50000 3 4 000 50,000 5 000 NL 50 000 MW -46 1/28/2000 GW -3 ND ND NR ND ND ND 2.6 J 200 NR ND MW -46 3/8/2000 ND ND NR ND ND ND ND 43 NR ND MW -46 6/12/2000 ND ND NR ND ND ND ND 17 NR ND MW -46 9/11/2000 ND ND NR ND ND ND ND 12 NR ND MW -46 12/12/2000 ND ND NR ND ND ND ND 24 NR ND MW -46 12/12/2000 ND ND NR ND I ND ND ND 22 NR ND MW -46 3/13/2001 ND ND NR ND ND ND ND 22 NR ND MW -46 2/20/2003 2.0 U IOU 2.0 U 5.0 U 2.0 U 2.0 U ND 5.0 2.0 U 2.0 U MW -46 10/14/2003 1.0 U IOU 0.80 J 2.0 U 1.0 U 1.0 U 2.0 U 3.0 2.0 U 2.0 U MW -46 11/2/2006 2.0U IOU 1.0U 2.0U 1.0U 1.0U 1.0U 9.0 1.OU* 1.0U MW -46 11/2/2006 2.0U IOU 1.0U 2.0U 1.0U 1.0U 1.0U* 6.7 1.OU* 1.0U MW -46D 6/30/2005 GW -3 1.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U -1 3.0 1.0 U 1.0 U MW -47 7/26/2000 GW -3 ND ND NR ND ND ND 1.0 U 2,400 NR ND MW -47 9/13/2000 ND ND NR ND ND ND ND 5,800 NR ND MW -47 12/15/2000 ND ND NR ND ND ND ND 3,600 NR ND MW -47 12/15/2000 ND ND NR ND ND ND ND 3,400 NR ND MW -47 3/13/2001 ND ND NR ND ND ND ND 5,000 NR ND MW -47 12/19/2001 ND ND NR ND ND ND ND 6,200 NR ND MW -47 2/20/2003 IOU 50 U IOU 20 U IOU IOU ND 2,200 IOU IOU MW -47 10/14/2003 IOU 100 U IOU 20 U IOU IOU IOU 320 20 U 20 U MW -47 10/20/2004 1.0 U IOU 1.0 U 2.0 U 1.0 U 1.0 U IOU 0.60 J 1.0 U 1.0 U MW -47 11/2/2005 2.OU l0U 1.OU 2.0U 1.0U 1.0U 1.0U 1.0U 1.0U 1.0U MW -48 7/26/2000 GW -2 ND ND NR ND ND ND 1.0 U 160,000 NR ND MW -48 12/14/2000 ND ND NR ND ND ND ND 150,000 NR ND MW -48 3/13/2001 ND ND NR ND ND ND ND 150,000 NR ND MW -48 12/10/2001 ND ND NR ND ND ND ND 160,000 NR ND MW -48 7/3/2002 ND ND NR ND ND ND ND 160,000 NR ND MW -48 10/8/2002 2,500 U 25,000 U I NR 25,000 U 2,500 U 3,800 U ND 170,000 NR 5,000 U MW -48 11/20/2002 2,500 U 25,000 U NR 25,000 U 2,500 U 3,800 U 3,800 U 150,000 NR 5,000 U MW -48 2/20/2003 400 U 2,000 U 400 U 1,000 U 400 U 700 3,800 U 87,000 400 U 400 U MW -48 10/14/2003 5,000 U 50,000 U 5,000 U 10,000 U 5,000 U 5,000 U 400 U 160,000 10,000 U 10,000 U MW -48 4/29/2004 500 U 5,000 U 500 U 1,000 U 500 U 500 J V 5,000 U 4,700 500 U 290 J MW -48 7/15/2004 50 U 500 U 50 U 100 U 50 U 50 U 500 U 320 50 U 990 MW -48 4/21/2005 100 U 1,000 U 100 U 200 U 100 U 100 U 50 U 4,400 100 U 360 MW -48 11/1/2005 IOU 50 U 5.0 U IOU 5.0 U 2.6 J 100 U 96 5.0 U 190 MW 48 11/2/20 06 40 U 200 U * 20 U 40 U 20 U * 20 U 7.0 110 20 U 250 MW 48 7/17/2008 2.0U 10U 1.0U J 2.0U 1.0U 1.0U 20U 1.5 1.0U 41 GVRWECT6111621G39\08M antl_MonAorinp108M_p�porh�DslsTsbYSVASN91Tabls].ds 76 of 88 n U n I U I U n Li Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works FG:\PROJECTM116219391O&M end M.nko,ng% 6M_Raeorls UTeW,N,MIT,b 2- 77 of 88 Lj Concentration ( g/L) c Z O C C t d A t Z O MCP c v O v O u O d o Ground- � .L°. 3 y e °q E Well water F u u .�°_ v o e a o o G Location Sample Classif- ID Date ication m U U MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 1009000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20 000 20 00(1 30,000 20,000 NL 50,000 10,000 NL 10,000 50,000 MW -49 12/15/2000 GW -2 ND ND ND ND 50U ND ND NR NR ND MW -49 1/4/2001 ND ND ND ND NR ND ND NR NR ND MW -49 3/14/2001 ND ND ND ND NR ND ND NR NR ND MW -49 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U NR IOU 2.0 U NR 2.0 U 2.0 U MW -49 10/13/2003 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -49 10/19/2004 1.0 U 1.0 U 1.0 U 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -49 2/15/2006 1.0U 1.0U 1.0U 1.0U 50U* 50U* 1.0U 2.0U 1.0U 1.0U MW -50 1/24/2002 GW 2.0 U 2.0 U 1.0 U 2.0 U NR IOU 1.0 U NR 2.0 U 2.0 U MW -50 2/12/2002 NR NR NR NR NR NR NR NR NR NR MW -50 3/7/2002 NR NR NR NR NR NR NR NR NR NR -3 MW -50 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U NR IOU 2.0 U NR 2.0 U 2.0 U MW -50 1/27/2004 1.0 U 1.0 U 1.0 U 1.0 U 50 U 50 U 1.0 U 2.0 U 2.0 1.0 U MW -50 10/26/2007 1.0 U 1.0 U 1.0 U 1.0 U 50 U * 50 U 1.0 U 2.0 U 0.92 J 1.0 U MW -51 1/24/2002 GW 2.0 U 2.0 U 1.0 U 2.0 U NR IOU 1.0 U NR 2.0 U 7.9 MW -51 2/12/2002 NR NR NR NR 50 U NR NR NR NR NR MW -51 3/7/2002 NR NR NR NR 50 U NR NR NR NR NR -3 MW -51 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U 50 U IOU 2.0 U NR 2.0 U 2.0 U MW -51 1/27/2004 I.0U 1.0U I.0U 1.0U 50U 50U 1.0U 2.0U 1.0U 1.0U MW -51 10/26/2007 1.0 U 0.47 J 1.0 U 1.0 U 50 U 50U 1.0 U 2.0 U 1.0 U 2.3 FG:\PROJECTM116219391O&M end M.nko,ng% 6M_Raeorls UTeW,N,MIT,b 2- 77 of 88 Lj Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works G:W WECTS\11MW91G8M_78088 Concentration ( /L) d a d On MCP dC A ° U 40, A °' r i °o u C Ground- a r v i = A d W r C N V L A Well water T Z p .y � U Location Sample Classif-a « ? a u u a ID Date ication fi F F� EC F > MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50 000 50,000 50,000 30 000 4,000 50,000 5,000 NL 50,000 MW -49 12/15/2000 GW -2 ND ND NR 48,000 ND ND IOU 140,000 NR ND MW -49 1/4/2001 ND ND NR ND ND ND ND 250 NR ND MW -49 3/14/2001 ND ND NR ND ND ND ND 240 NR ND MW -49 2/20/2003 2.0 U 10 2.0 U 5.0 U 2.0 U 2.0 U ND 5.0 2.0 U 2.0 U MW -49 10/13/2003 1.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 2.0 U 1.0 2.0 U 2.0 U MW -49 10/19/2004 1.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U MW -49 2/15/2006 2.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U MW -50 1/24/2002 GW -3 2.0 U 10 NR 5.0 U 2.0 U 2.0 U 1.0 U 2.0 U NR 2.0 U MW -50 2/12/2002 NR NR NR NR NR NR 2.0 U NR NR NR MW -50 3/7/2002 NR NR NR NR NR NR NR NR NR NR MW -50 2/20/2003 2.0 U 10 8.0 5.0 U 2.0 U 2.0 U NR 2.0 U 2.0 U 2.0 U MW -50 1/27/2004 1.0 U 10 3.0 2.0 U 1.0 U 1.0 U 2.0 U 1.0 2.0 U 0.30 U MW -50 10/26/2007 2.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.2 1.0 U 0.50 U MW -51 1/24/2002 GW -3 2.0 U 10 NR 5.0 U 2.0 U 2.0 U 1.0 U 12 NR 3.0 MW -51 2/12/2002 NR NR NR NR NR NR 2.0 U NR NR NR MW -51 3/7/2002 NR NR NR NR NR NR NR NR NR NR MW -51 2/20/2003 2.0 U 10 2.0 U 5.0 U 2.0 U 2.0 U NR 2.0 U 2.0 U 2.0 U MW -51 1 /27/2004 1.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 2.0 U 2.0 2.0 U 0.30 U MW -51 10/26/2007 L 2.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 4.9 1.0 U 0.50 U G:W WECTS\11MW91G8M_78088 n U n Li F) Li n i U r L C F U Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID 1� Sample Date MCP Ground- water Classif- ication Concentration ( g/L) ° y R d R p t 3 0 0 o a 3 �°_ E a e o o G? �? Ca d Y u Q MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20,000 30,000 20,000 NL 50,000 10,000 NL 10,000 MW -52D 2/20/2003 GW -2 2.0 U 2.0 U 1.0 U 2.0 U 50 U IOU 2.0 U NR 2.0 U __50,000 2.0 U MW -521) 10/13/2003 1.0 U 1.0 U 1.0 U 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -52D 1/28/2004 1.0 U 1.0 U 1.0 U 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -521) 4/29/2004 1.0 U 1.0 U 0.82 J 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 0.83 J MW -52D 7/15/2004 1.2 1.0 U 3.2 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.3 MW -521) 4/21/2005 0.56 J 1.0 U 1.4 1.0 U 250 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -521) 11/2/2005 1.0 U 1.0 U * 1.0 U 1.0 U 250 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -521) 10/25/2007 1.0 U 1.0 U 1.0 U 1.0 U 250 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -52D 10/25/2007 1.0 U 1.0 U 1.0 U 1.0 U 250 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -52D 7/17/2008 1.0 U 1.0 U * 1.0 U 1.0 U 250 U 50 U 1.0 U 2.0 U 1.0 U LO U MW -52S 2/20/2003 GW -2 2.0 U 2.0 U 1.0 U 2.0 U 250 U IOU 2.0 U NR 2.0 U 2.0 U MW -52S 10/13/2003 5.0 U 5.0 U 2.6 J 5.0 U 250 U 250 U 5.0 U IOU 5.0 U 5.0 U MW -52S 10/13/2003 5.0 U 5.0 U 5.0 U 5.0 U 50 U 250 U 5.0 U IOU 5.0 U 5.0 U MW -52S 1/28/2004 5.0 U 5.0 U 5.0 U 5.0 U 250 U * 250 U 5.0 U IOU 5.0 U 5.0 U MW -52S 4/29/2004 5.0 U 5.0 U 6.6 5.0 U 1,000 U * 250 U 5.0 U IOU 5.0 U 5.0 U MW -52S 4/29/2004 5.0 U 5.0 U 5.0 J V 5.0 U 1,000 U 250 U 5.0 U IOU 5.0 U 5.0 U MW -52S 7/15/2004 5.0 U 5.0 U 5.5 5.0 U 1,000 U * 250 U 5.0 U IOU 5.0 U 5.0 U MW -52S 7/15/2004 5.0 U 5.0 U 6.0 5.0 U 1,000 U 250 U 5.0 U IOU 5.0 U 5.0 U MW -52S 10/19/2004 1.4 2.8 3.7 1.0 U 1,300 U 50 U 1.0 U 2.0 U 1.0 U 3.8 MW -52S 11/2/2005 3.7 J 5.0 U 5.0 U 20 U 1,200 U 1,000 U * 20 U IOU 20 U 20 U MW -52S 11/2/2005 20 U 20 U 101 5.0 U NR 250 U * 5.0 U 40 U 5.0 U 4.7 J MW -52S 5/9/2006 20 U 20 U 15 J 20 U 50 U 1,000 U * 20 U 40 U 20 U 20 U MW -52S 11/2/2006 20 U 20 U 20 U 20 U NR 1,000 U * 20 U 40 U 20 U 20 U MW -52S 4/26/2007 20 U 20 U 20 U 20 U 250 U 1,000 U * 20 U 40 U 20 U 20 U MW -52S 10/25/2007 25 U 25 U 15 J 25 U 50 U 1,300 U 25 U 50 U 25 U 25 U MW-S2S 7/17/2008 25 U 25 U * 41 25 U 50 U 1,200 U 25 U 50 U 25 U 25 U MW -53 2/20/2003GW 2 2.0 U 2.0 U 1.0 U 2.0 U 50 U IOU 2.0 U NR 2.0 U 2.0 U MW -53 10/15/2003 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -54D 2/20/2003 GW -2 1 2.0 U 3.0 1.0 U 2.0 U 50 U IOU 2.0 U NR 2.0 U 2.0 MW -54D 10/13/2003 5.0 U 5.0 U 5.0 U 5.0 U 500 U 250 U 5.0 U IOU 5.0 U 11 MW -54D 11/2/2005 1.0 U 1.0 U * 1.0 U 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 46 MW -54D 4/27/2007 1.0 U 1.6 1.0 U 1.0 U 50 U 50 U* 1.0 U 2.0 U * 1.0 U 51 MW -54D 7/17/2008 1.0 U 1.1 * 1.0 U 1.0 U 50 U * 50 U 1.0 U 2.0 U 1.0 U 52 G,TRWECTMi IQ 1039%0&M_,nd M,,R,,hglMM Repml D,G Tebl,,N,a 91TabM2.As 79 of 88 1✓ Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location 1D Sample Date MCP Ground- water Classif- ication Concentration ( /L) d d e d U d u C m aL A Z ON .�. y 7� 1 01 C MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50,000 50 000 50,000 30,000 4 000 50,000 5,000 NL 50,000 MW -52D 2/20/2003 GW -2 2.0 U 10 2.0 U 5.0 U 2.0 U 2.0 U 1.0 U 9.0 2.0 U 2.0 U MW -52D 10/13/2003 1.0 U ]0 1.0 U 2.0 U 1.0 U 1.0 U 2.0 U 5.0 2.0 U 2,0 U MW -52D 1/28/2004 1.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 6.0 2.0 U 0.30 U MW -52D 4/29/2004 1.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 15 1.0 U 1.0 U MW -521) 7/15/2004 1.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 54 1.0 U 1.0 U MW -52D 4/21/2005 1.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 35 1.0 U 1.0 U MW -52D 11/2/2005 2.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.9 1.0 U 1.0 U MW -52D 10/25/2007 2.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.3 1.0 U 0.50 U MW -52D 10/25/2007 2.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.2 1.0 U 0.50 U MW -521.) 7/17/2008 2.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 7.5 1.0 U 0.50 U MW -52S 2/20/2003 GW -2 2.0 U 10 2.0 U 5.0 U 2.0 U 2.0 U 1.0 U 57 2.0 U 2.0 U MW -52S 10/13/2003 5.0 U 50 5.0 U IOU 5.0 U 5.0 U 2.0 U 112 IOU IOU MW -52S 10/13/2003 5.0 U 50 5.0 U IOU 5.0 U 5.0 U 5.0 U 109 IOU IOU MW -52S 1/28/2004 5.0 U 50 5.0 U IOU 5.0 U 5.0 U 5.0 U 70 IOU 2.0 U MW -52S 4/29/2004 5.0 U 50 5.0 U IOU 5.0 U 5.0 U 5.0 U 250 5.0 U 5.0 U MW -52S 4/29/2004 5.0 U 50 5.0 U IOU 5.0 U 5.0 U 5.0 U 250 5.0 U 5.0 U MW -52S 7/15/2004 5.0 U 50 5.0 U IOU 5.0 U 5.0 U 5.0 U 250 5.0 U 5.0 U MW -52S 7/15/2004 5.0 U 50 5.0 U IOU 5.0 U 5.0 U 5.0 U 220 5.0 U 5.0 U MW -52S 10/19/2004 1.0 U 10 1.0 U 2.0 U 0.50 J 1.0 U 5.0 U 190 1.0 U 5.0 MW -52S 11/2/2005 40 U 50 5.0 U 40 U 20 U 5.0 U 0.56 J 560 5.0 U 5.0 U MW -52S 11/2/2005 10 U 200 20 U IOU 5.0 U 20 U 20 U 600 20 U 20 U MW -52S 5/9/2006 40 U 200 20 U 40 U 20 U 20 U 5.0 U 430 20 U 20 U MW -52S 11/2/2006 40 U 200 20 U 40 U 20 U * 20 U 20 U 430 20 U 20 U MW -52S 4/26/2007 40 U 200 20 U 40 U 20 U 20 U 20 U 670 20 U 20 U MW -52S 10/25/2007 50 U 250 25 U 7.6 J 25 U 25 U 20 U 730 25 U 13 U MW -52S 7/17/2008 50 U 250 25 U 50 U 25 U 25 U 25 U 1,400 25 U 12 U MW -53 2/20/2003 GW -2 2.0 U 10 2.0 U 5.0 U 2.0 U 2.0 U 25 U 2.0 U 2.0 U 2.0 U MW -53 10/15/2003 1.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 2.0 U 2.0 2.0 U 2.0 U MW -54D 2/20/2003 GW -2 2.0 U 10 2.0 U 5.0 U 2.0 U 2.0 U 1.0 U 18 2.0 U 2.0 U MW -54D 10/13/2003 5.0 U 50 5.0 U IOU 5.0 U 5.0 U 2.0 U 121 IOU IOU MW -54D 11/2/2005 2.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 5.0 U 78 1.0 U 1.0 U MW -54D 4/27/2007 2.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 0.56 J 78 1.0 U * 1.0 U MW -54D 7/17/2008 2.Ljj 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 68 1.0 U 0.50 U G1PROJECTSMU1009%O&M_,d Monis g%O&M 0.ryw 0.%TabkcV..MITab 2.Ma 80 Of 88 n U n Lj r u r U Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works en G:NROJECTS\116]16391O&M_,nd M-A.,M910&M_R, ortlD T.b ,W.N9Tebh2ds 81 of 88 11 .' V Concentration ( g/L) C G MCP Ground- _ _ 3 e Well water T g e € A Location Sample Classif- ID Date ication .. .r 1 c u MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 2-0,00-0 20,000 30,000 20 000 NL 50,000 10,000 NL 10,000 50,000 MW -54S 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U 50 U * IOU 2.0 U NR 2.0 U 62 MW -54S 10/13/2003 1.0 U 1.0 U 1.0 U 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 11 MW -54S 4/28/2004 IOU IOU IOU IOU 50 U 500 U IOU 20 U IOU 13 MW -54S 10/19/2004 GW -2 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 4.3 MW -54S 4/21/2005 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U I.0 U 5.7 MW -54S 11/2/2005 1.0 U 1.0 U 1.0 U 1.0 U 200 U 50 U * 1.0 U 2.0 U 1.0 U 0.84 J MW -54S 11/2/2005 1.0 U 1.0 U 1.0 U 1.0 U 250 U 50 U * 1.0 U 2.0 U 1.0 U 0.81 J MW -54S 4/27/2007 1.0 U 1.0 U 1.0 U 1.0 U 500 U 50 U * 1.0 U 2.0 U * 1.0 U 2.0 MW -54S 7/17/2008 1.0 U 1.0 U * 1.0 U 1.0 U 500 U * 50 U 1.0 U 2.0 U 1.0 U 0.74 J MW -55 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U 1,000 U IOU 2.0 U NR 2.0 U 90 MW -55 7/10/2003 2.0 U 2.0 U 1.0 U 2.0 U 2,500 U * IOU 2.0 U 2.0 U 2.0 U 2.0 U MW -55 10/14/2003 GW -2 4.0 U 5.0 4.0 U 4.0 U 1,300 U 200 U 4.0 U 8.0 U 4.0 U 100 MW -55 4/29/2004 5.0 U 7.2 5.0 U 5.0 U 1,300 U * 250 U 5.0 U IOU 5.0 U 140 MW -55 4/21/2005 10 U 40 IOU IOU 1,200 U * 500 U IOU 20 U IOU 380 MW -55 11/1/2005 IOU 45 8.0 J IOU NR 500 U * IOU 20 U IOU 940 MW -55 5/8/2006 20 U 130 20 U 20 U 50 U 1,000 U * 20 U 40 U 20 U 740 MW -55 11/2/2006 50 U 160 50 U 50 U NR 2,500 U * 50 U 100 U 50 U 460 MW -55 4/27/2007 25 U 96 25 U 25 U 50U 1,300 U * 25 U 50 U 25 U 820 MW -55 10/28/2007 25 U 93 12 J 25 U 50 U 1,300 U 25 U 50 U 25 U 1,000 MW -55 7/17/2008 25 U 28 25 U 25 U 50 U 1,200 U * 25 U 50 U 25 U 310 MW -56 2/20/2003 GW -3 2.0 U 2.0 U 1.0 U 2.0 U 50U IOU 2.0 U NR 2.0 U 2.0 U MW -56 5/27/2004 1.0 U 1 1.0 U 1.0 U 1.0 U 50 U * 50U 1.0 U 2.0 U 1.0 U 1.0 U en G:NROJECTS\116]16391O&M_,nd M-A.,M910&M_R, ortlD T.b ,W.N9Tebh2ds 81 of 88 11 .' V Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works G:\PROJECT5111621g3g%MM end M,,R,r glO&R_R,p Mb MTWW,W,A9\T,D 2.q 82 of 88 Concentration ( /L) d a u d MCP U Z r r Ground- `o A Q w ` o Well water al -°7 °' .. _2 _ U Location Sample Classif- p u u ID Date ication F F r F E~ MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL ]5L0OOOJ MCP GW -3 500 50 000 50 000 50 000 30,000 4,000 50 000 5 000 NL MW -54S 2/20/2003 GW -2 2.0 U 10 2.0 U 5.0 U 2.0 U 2.0 U 1.0 U 240 2.0 U 2.0 U MW -54S 10/13/2003 1.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 2.0 U 10 2.0 U 2.0 U MW -54S 4/28/2004 IOU 100 IOU 20 U IOU IOU 1.0 U 78 IOU IOU MW -54S 10/19/2004 1.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U IOU 7.4 1.0 U 1.0 U MW -54S 4/21/2005 1.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 22 1.0 U 1.0 U MW -54S 11/2/2005 2.0 U 10 0.78 J 2.0 U 1.0 U 1.0 U 1.0 U 2.7 1.0 U 1.0 U MW -54S 11/2/2005 2.0 U 10 0.81 J 2.0 U 1.0 U 1.0 U 1.0 U 2.7 1.0 U 1.0 U MW -54S 4/27/2007 2.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 12 1.0 U * 1.0 U MW -54S 7/17/2008 2.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 27 1.0 U 0.50 U MW -55 2/20/2003 GW -2 2.0 U 10 2.0 U 5.0 U 2.0 U 2.0 U 1.0 U 18 2.0 U 34 MW -55 7/10/2003 2.0 U 10 2.0 U 5.0 U 2.0 U 2.0 U 5.0 2.0 U 2.0 U 2.0 U MW -55 10/14/2003 4.0 U 40 4.0 U 8.0 U 4.0 U 4.0 U 2.0 U 11 8.0 U 42 MW -55 4/29/2004 5.0 U 50 5.0 U IOU 5.0 U 5.0 U 6.0 31 5.0 U 31 MW -55 4/21/2005 IOU 100 IOU 20 U IOU IOU 7.0 64 IOU 530 MW -55 11/1/2005 20 U 100 IOU 20 U IOU IOU 8.7 J 250 IOU 460 MW -55 5/8/2006 40 U 200 20 U 40 U 20 U 20 U 7.6 J 150 20 U 1,100 MW -55 11/2/2006 100 U 500 50 U 100 U 50 U * 50 U 12 J 43 J 50 U 1,100 MW -55 4/27/2007 50 U 250 25 U 50 U 25 U 25 U 50 U 190 25 U 700 MW -55 10/28/2007 50 U 250 25 U 50 U 25 U 25 U 25 U 94 25 U 670 MW -55 7/17/2008 50U 250 25 U 58 B 25 U 25 U 19 J 48 25 U 95 MW -56 2/20/2003 GW -3 2.0 U 10 2.0 U 5.0 U 2.0 U 2.0 U 25 U 2.0 U 2.0 U 2.0 U MW -5G 5/27/2004 1.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U G:\PROJECT5111621g3g%MM end M,,R,r glO&R_R,p Mb MTWW,W,A9\T,D 2.q 82 of 88 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works 1 G:IPRWECT611162103MO&M an M,,k,ng%MM_Repm-b6 WV M%TebW- 83 of 88 Concentration ( /L) Wellwater Location ID Sample Date MCP Ground- Classif- kationQ u e 0 y ° _ u Ev C R a+ d `o u u A C C7 t d 0 u A C R o A a o A a ° N 0 r o c U c U � e L' C P o A ^! 'u MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20 000 20 000 30,000 20,000 NL 50,000 10,000 NL 10,000 50,000 MW -57D 2/20/2003 2.0 U 2.0 U 1.0 U 2.0 U 500 U IOU 2.0 U NR 2.0 U 2.0 U MW -57D 10/13/2003 GW -3 1.0 U 1.0 U 1.0 U 1.0 U 250 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -571) 1/27/2004 1.0 U 1.0 U 1.0 U 1.0 U 250 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -57D 4/28/2004 1.0 U 1.0 U 1.0 U 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -57D 7/15/2004 1.0U 1.0U 1.0U 1.0U 50U* 50U U 2.0U 1.0U 1.0U MW -57D 11/2/2005 -1.0 1.0U 1.0U 1.0U 1.0U 500U* 50U* 1.0U 2.0U 1.0U 1.0U MW -57S 10/13/2003 IOU IOU IOU IOU 50U 1 500 U IOU 20 U IOU 53 MW -57S 1/28/2004 GW -3 5.0 U 5.0 U 5.0 U 5.0 U 50U 250 U 5.0 U IOU 5.0 U 10 MW -57S 4/28/2004 5.0 U 5.0 U 5.0 U 5.0 U 50 U 250 U 5.0 U IOU 5.0 U 14 MW -57S 7/15/2004 1.0 U 1.0 U 1.0 U 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 12 MW -57S 11/2/2005 1 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U * 1.0 U 2.0 U 1.0 U 4.1 MW -57S 10/28/2007 IOU IOU IOU IOU 50 U 500 U IOU 20 U IOU 8.5 J MW -58 10/13/2003 1.0 U 1.0 U 1.0 U 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -58 1/27/2004 GW -3 1.0 U 1.0 U 1.0 U 1.0 U 50 U* 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -58 4/28/2004 1.0 U 1.0 U 1.0 U 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -58 7/15/2004 1.0 U 1.0 U 1.0 U 1.0 U 5,000 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -59S 7/10/2003 GW -3 13 2.0 U 1.0 U 2.0 U 2,500 U IOU 2.0 U 2.0 U 2.0 U 2.0 U MW -59S 1/28/2004 10 1.0 U 1.0 U 1.0 U 1,000 U * 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -59S 2/23/2005 10 1.0 U 1.0 U 1.0 U 1,000 U * 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -59S 10/24/2007 6.4 3.0 0.49 J 1.0 U NR 50 U 1.0 U 2.0 U 1.0 U 0.94 J MW -60S 7/10/2003 4,000 640 640 40 U NR 200 U 40 U 40 U 380 MW -60S 1/28/2004 GW -3 920 100 U 160 100 U 250 U 5,000 U 100 U 2 100 U 500 MW -60S 2/23/2005 1,300 50 U 250 50 U 50 U 2,500 U 50 U 1 50 U qOU 200 MW -60S 10/24/2007 150 20 U 31 20 U 50 U * 1,000 U 20 U 7.7 J 23 MW -60S 4/1/2008 190 15 J 11 J 20 U NR 1,000 U * 20 U 20 U 16 J MW -61S 7/10/2003 NR NR NR 2.0 U 50U NR 2.0 U NR 2.0 U NR MW -61S 7/10/2003 95 2.0 U 8.0 NR 500 U IOU NR 2.0 U NR 2.0 U MW -61S 1/28/2004 GW -3 60 5.0 U 6.0 5.0 U 250 U 250 U 5.0 U IOU 5.0 U 5.0 U MW -61S 2/23/2005 52 1.0 U 3.9 1.0 U 250 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -61S 10/24/2007 261.0 U 3.5 1.0 U 500 U 50 U 1.0 U 2.0 U 1.0 U 0.84 J 1 G:IPRWECT611162103MO&M an M,,k,ng%MM_Repm-b6 WV M%TebW- 83 of 88 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( /L) d � a d O O u O O a d v a a, a 01 c .1 ° g a u C U W 5 FMCPUCL d U 100,000 100,000 100,000 100,000 100,000 L4O 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 90 30 NL 2 MCP GW -3 500 50000 50 000 50 000 30 000 50,000 5,000 NL 50,000 MW -57U 2/20/2003 GW -3 2.0 U 10 2.0 U 5.0 U 2.0 U 2.0 U 1.0 U 2.0 U 2.0 U 2.0 U MW -571) 10/13/2003 1.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 2.0 U 1.0 U 2.0 U 2.0 U MW -57D 1/27/2004 1.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.0 U 2.0 U 0.30 U MW -57D 4/28/2004 1.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U MW -57D 7/15/2004 1.0 U 10 1.0 U 2.0 U 0.81 J 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U MW -57D 11/2/2005 2.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U MW -57S 10/13/2003 GW -3 IOU 100 IOU 20 U 210 IOU 1.0 U 83 20 U 20 U MW -57S 1/28/2004 5.0 U 50 5.0 U IOU 92 5.0 U IOU 19 IOU 2.0 U MW -57S 4/28/2004 5.0 U 50 5.0 U IOU 58 5.0 U 5.0 U 21 5.0 U 5.0 U MW -57S 7/15/2004 1.0 U 10 1.0 U 2.0 U 47 1.0 U 5.0 U 14 1.0 U 0.63 J MW -57S 11/2/2005 2.0 U 10 1.0 U 2.0 U 82 1.0 U 1.0 U 5.9 1.0 U 1.0 U MW -57S 10/28/2007 20 U 100 10 U 20 U 260 10 U 1.0 U 17 10 U 5.0 U MW -58 10/13/2003 GW -3 1.0U 10 1.0U 2.0U Lo 1.0U IOU 1.0U 2.0U 2.0U MW -58 1/27/2004 1.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.0 U 2.0 U 0.30 U MW -58 4/28/2004 1.0 U 10 0.59 J 2.0 U 0.74 J 1.0 U 1.0 U 0.88 J 1.0 U 1.0 U MW -58 7/15/2004 1.0 U 10 0.67 J 2.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U MW -59S 7/10/2003 GW -3 2.0 U 10 2.0 U 5.0 U 2.0 2.0 U 1.0 U 16 2.0 U 2.0 U MW -59S 1/28/2004 1.0 U 10 1.0 U 2.0 U 2.0 1.0 U 2.0 U 13 2.0 U 0.30 U MW -59S 2/23/2005 1.0 U 10 1.0 U 2.0 U 2.2 1.0 U 1.0 U 15 1.0 U 1.0 U MW -59S 10/24/2007 2.0 U 10 1.0 U 2.0 U 5.0 1.0 U 1.0 U 19 1.0 U 0.93 MW -60S 7/10/2003 GW -3 40 U 200 40 U 100 U 1,000 40 U 1.0 U 8,800 40 U 40 U MW -60S 1/28/2004 100 U 1,000 100 U 200 U 370 100 U 40 U 2,800 200 U 30 U MW -60S 2/23/2005 50 U 500 50 U 100 U 500 50 U 100 U 4,100 50 U 50 U MW -60S 10/24/2007 40 U 200 20 U 40 U 210 20 U 50 U 490 20 U IOU MW -60S 4/1/2008 40 U 200 20 U 13 J 20U 24 20 U 17 J 20 U IOU MW -61S 7/10/2003 GW -3 NR NR NR 5.0 U NR NR 20 U 140 NR 2.0 U MW -61S 7/10/2003 20 U 10 2.0 U NR 65 2.0 U 2.0 U NR 2.0 U 2.0 U MW -61S 1/28/2004 5.0 U 50 5.0 U IOU 55 5.0 U NR 93 IOU 2.0 U MW -61S 2/23/2005 1.0 U 10 1.0 U 2.0 U 49 1.0 U 5.0 U 68 1.0 U 1.0 U MW -61S 10/24/20071 1 2.0 U 10 1.0 U 2.0 U 63 1.0 U 1.0 U 27 1.0 U 0.50 U O:WROJECT-16I10391OW Rtl_84 Of 88 n I� V i Lj r 1~J I� U U f Lj n tJ M +Ij tJ Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works rGAPROJECTS IM100g\08M_- M.,Ao g%O&M R,pOMh� T,bbEW.MS%TebM2.Az 85 of 88 L-1 Concentration ( g/L) Well Location ID Sample Date MCP Ground- water Classif- ication u y e F, � R v `0 A .; d d d 0 u A d o u G a o O r e Q e r. d o U € `' 0 U u y o a A u MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20,000 30,000 20 000 NL 50 000 10 000 NL 10 000 50,000 MW -631) 7/10/2003 GW -3 14 2.0 U 1.0 U 2.0 U 250 U * IOU 2.0 U 2.0 U 2.0 U 18 MW -63D 1/28/2004 2.0 1.0 0.80 J 1.0 U 450 * 50 U 1.0 U 1.0 J 1.0 U 60 MW -63D 2/23/2005 110 IOU IOU IOU 250 U * 500 U IOU 20 U IOU 15 MW -63D 8/9/2005 45 5.0 U 2.6 J 5.0 U 250 U * 250 U 5.0 U IOU 5.0 U 100 MW -63D 5/8/2006 26 5.0 U * 5.0 U 5.0 U NR 250 U * 5.0 U IOU 5.0 U 7.9 MW -63D 4/26/2007 IOU IOU IOU IOU NR 500 U * IOU 20 U IOU 5.1 J MW -63D 10/24/2007 21 5.0 U 1.5 J 5.0 U 2,500 U 250 U 5.0 U IOU 5.0 U 140 * MW -63D 10/24/2007 22 5.0 U 1.5 J 5.0 U 500 U 250 U 5.0 U IOU 5.0 U 140 * MW -63D 4/1/2008 41 5.0 U 5.5 5.0 U 2,500 U * 250 U * 5.0 U IOU 5.0 U 4.3 J MW -63D 4/1/2008 45 5.0 U 5.2 5.0 U 250 U 250 U * 5.0 U IOU 5.0 U 4.5 J MW -64S 7/10/2003 GW -3 1,100 70 IOU NR 50 U NR NR NR NR NR MW -64S 7/10/2003 NR NR 28 IOU 50 U 50 U IOU IOU IOU 90 MW -64S 1/29/2004 460 27 J 50 U 50 U 50 U 2,500 U 50 U 100 U 50 U 62 MW -64S 2/23/2005 230 5.9 J 9.3 J IOU 500 U * 500 U IOU 20 U IOU 24 MW -648 10/24/2007 360 42 J 22 J 50 U 50 U 2,500 U 50 U 100 U 14 J 980 MW -65S 1/27/2004 GW -3 34 5.0 U 5.0 U 5.0 U 50 U 250 U 5.0 U IOU 5.0 U 5.0 U MW -65S 2/23/2005 20 1.0 U 1.0 U 1.0 U 50 U * 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -65S 8/9/2005 8.9 1.0 U 1.0 U 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -65S 4/26/2007 4.8 1.0 U 1.0 U 1.0 U 50 U 50 U * 1.0 U 2.0 U 1.0 U 1.0 U MW -65S 10/24/2007 IOU IOU IOU IOU 250 U 500 U IOU 20 U 3.5 J 10 U MW -66S 1/28/2004 GW -3 2.0 1.0 U 1.0 U 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 0.90 J MW -66S 2/23/2005 1.9 1.7 1.0 U 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 3.9 MW -66S 10/24/2007 1.3 1.0 U 1.0 U 1.0 U 100 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -67S 1/28/2004 GW -3 2.0 1.0 U 0.60 J 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -67S 2/23/2005 1.2 1.0 U 0.60 J 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -68S 1/28/2004 GW 3 63 4.0 J 8.0 5.0 U 50 U 250 U 5.0 U IOU 5.0 U 53 MW -68S 2/23/2005 1 32 0.93 J 6.5 1.0 U 50 U * 50 U 1.0 U 2.0 U 1.0 U 7.5 MW -69S 1/28/2004 1.0 U 1.0 U 1.0 U 1.0 U 1,000 U 50 U 1.0 U 2.0 U 1.011 1.0 U MW -70S 4/28/2004 75 2.0 U 4.2 2.0 U 1,000 U 100 U 2.0 U 4.0 U 2.0 U 2.0 U MW -70S 7/15/2004 94 0.89 J 5.6 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -70S 10/20/2004 GW -3 74 0.68 J 4.1 1.0 U 50 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -70S 10/26/2007 19 1.0 U 2.2 1.0 U 140 * 50 U 1.0 U 2.0 U 1.0 U 1.0 U MW -70S 10/26/2007 18 1.0 U 1.8 1.0 U 2,500 U 50 U 1.0 U 2.0 U 1.0 U 1.0 U rGAPROJECTS IM100g\08M_- M.,Ao g%O&M R,pOMh� T,bbEW.MS%TebM2.Az 85 of 88 L-1 Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works Well Location ID Sample Date MCP Ground- water Classif- ication Concentration ( /L) d � C 14, d � t d L y U u W d C c �° ? a = £ F F F F 71 > MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50 000 50 000 50,000 30 000 4 000 50 000 5 000 NL 50,000 MW -63D 7/10/2003 GW -3 2.0 U 10 2.0 U 5.0 U 6.0 2.0 U 1.0 U 39 2.0 U 6.0 MW -63D 1/28/2004 1.0 U 10 1.0 U 2.0 U 1.0 1.0 U 2.0 U 10 2.0 U 19 MW -63D 2/23/2005 IOU 100 IOU 20 U 94 IOU 1.0 U 430 IOU IOU MW -63D 8/9/2005 5.0 U 50 5.0 U IOU 54 5.0 U IOU 210 5.0 U 9.2 MW -63D 5/8/2006 IOU 50 5.0 U 6.6 J 44 5.0 U 5.0 U 78 5.0 U * 5.0 U MW -63D 4/26/2007 20 U 100 IOU 20 U 29 IOU 5.0 U 230 IOU IOU MW -63D 10/24/2007 IOU 50 5.0 U IOU 22 5.0 U IOU 25 5.0 U 2.5 U MW -63D 10/24/2007 IOU 50 5.0 U IOU 26 5.0 U 5.0 U 30 5.0 U 2.5 U MW -63D 4/1/2008 IOU 50 5.0 U IOU 15 15 5.0 U 130 5.0 U 2.5 U MW -63D 4/1/2008 IOU 50 5.0 U 3.3 J 15 14 5.0 U 110 5.0 U 2.5 U MW -64S 7/10/2003 GW -3 NR 50 NR NR 420 IOU 5.0 U 2,100 NR NR MW -64S 7/10/2003 IOU NR IOU 30 U NR NR IOU NR IOU 20 MW -64S 1/29/2004 50 U 500 50 U 100 U 260 50 U NR 1,300 100 U 15 U MW -64S 2/23/2005 IOU 100 10 U 20 U 120 IOU 50 U 710 IOU IOU MW -64S 10/24/2007 100 U 500 50 U 100 U 320 50 U IOU 1,500 50 U 360 MW -65S 1/27/2004 GW -3 5.0 U 50 5.0 U IOU 64 5.0 U 50 U 32 IOU 2.0 U MW -65S 2/23/2005 1.0 U 10 1.0 U 2.0 U 44 1.0 U 5.0 U 25 1.0 U 1.0 U MW -65S 8/9/2005 1.0 U 10 1.0 U 2.0 U 25 1.0 U 1.0 U 8.7 1.0 U 1.0 U MW -65S 4/26/2007 2.0 U 10 1.0 U 2.0 U 23 1.0 U 1.0 U 5.7 1.0 U * 1.0 U MW -65S 10/24/2007 20 U 100 IOU 20 U 5.0 J IOU 1.0 U 2.3 J IOU 5.0 U MW -66S 1/28/2004 GW -3 1.0 U 10 1.0 U 2.0 U 6.0 1.0 U IOU 4.0 2.0 U 0.30 U MW -66S 2/23/2005 1.0 U 10 1.0 U 2.0 U 2.7 1.0 U 1.0 U 9.4 1.0 U 4.3 MW -66S 10/24/2007 2.0 U 10 1.0 U 2.0 U 1.2 1.0 U 1.0 U 1.0 1.0 U 0.50 U MW -67S 1/28/2004 GW -3 1.0 U 10 1.0 U 2.0 U 0.90 J 1.0 U 1.0 U 2.0 2.0 U 0.30 U MW -67S 2/23/2005 1.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U MW -68S 1/28/2004 GW -3 5.0 U 50 5.0 U IOU 15 5.0 U 1.0 U 140 IOU 2.0 U MW -68S 2/23/2005 1.0 U 10 1.0 U 2.0 U 7.8 1.0 U 3.0 J 85 1.0 U 1.0 U MW -69S 1/28/2004 1.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 1.0 U 2.0 U 0.30 U MW -70S 4/28/2004 GW -3 2.0 U 20 2.0 U 4.0 U 5.7 2.0 U 1.0 U 35 2.0 U 2.0 U MW -70S 7/15/2004 1.0 U 10 1.0 U 2.0 U 7.8 1.0 U 2.0 U 40 1.0 U 1.0 U MW -70S 10/20/2004 1.0 U 10 1.0 U 2.0 U 6.9 1.0 U 1.0 U 39 1.0 U 1.0 U MW -70S 10/26/2007 2.0 U 10 1.0 U 2.0 U 12 1.0 U 1.0 U 25 1.0 U * 0.50 U MW -70S 10/26/2007 2.0 U 10 1.0 U * 2.OL_j 8.4 1.0 U 1.0 U 27 1.0 U 0.50 U G:\MWECTMllU1G39%MM end Mnnlrorig=M Rap.ft�t TobW,WAa 9\Tebk2.A, 86 of 88 C r U r Table 2 Historical Groundwater Analytical Results for VOCs (µg/L) Merrimack Valley Works ' GAPRWECTS%11621039\08M_antl Monporing\06M_ReportslGafeTebksVAeN9lTebb2.ds 87 of 88 U Concentration (µ /L) c e O A i0' Z O MCP L ° Ground- 0 0 _ o 3 a .0 u Wellwater H .2 uv o c o o A Location Sample Classif- �? �? Ca P ID Date ication.. .. r W U U v MCP UCL 100,000 100,000 100,000 100,000 NL 100,000 100,000 NL 100,000 100,000 MCP GW -2 4,000 1,000 80 5 NL 50,000 2,000 NL 400 100 MCP GW -3 20,000 20 000 30 000 20 000 NL 50,000 10 000 NL 10,000 50 000 MW -71D 5/27/2004 GW -3 20 U 22 20 U 20 U 2,500 U 1,000 U U 40 U 20 U 1,100 20 U 22 101 20 U 1,300 U 1,000 U t2O �740U 20 U 1,100 MW -71D 5/27/2004 MW -72S 8/9/2005 1.0 U 1.2 1.0 U 1.0 U 1,300 U * 50 U 1.0 U 2.0 U 1.0 U 4.1 1.0 U 1.0 U 1.0 U 1.0 U 25,000 U * 50 U * 1.0 U 2.0 U 1.0 U 1.2 MW -72S 1/20/2006 GW -2 1.0 U 5.1 1.0 U 1.0 U 250,000 U * 50 U 1.0 U 4.3 1.0 U 0.90 J MW -72S 10/24/2007 MW -73S 8/9/2005 50 U 180 50 U 50 U NR 2,500 U 50 U 100 U 50 U 2,100 50 U 96 50 U 50 U NR 2,500 U 50 U 100 U 50 U 300 MW -73S 9/28/2005 GW -2 MW -73S 1/20/2006 25 U 92 25 U 25 U 50,000 U 1,300 U * 25 U 50 U 25 U 1,100 25 U 110 25 U 25 U 50,000 U 1,300 U 25 U 50 U 8.0 J 17 J MW -73S 10/24/2007 MW -74D 6/1/2006 GW -3 500 U 500 U 500 U 500 U 50,000 U 25,000 U 500 U 1,000 U 500 U 2,200 MW -75D 6/1/2006 GW -3 5,000 U 5,000 U 5,000 U 5,000 U 50,000 U 250,000 U 5,000 U 10,000 U 5,000 U 4,900 J ' GAPRWECTS%11621039\08M_antl Monporing\06M_ReportslGafeTebksVAeN9lTebb2.ds 87 of 88 U Table 2 Historical Groundwater Analytical Results for VOCs (µg/l-) Merrimack Valley Works Notes: Volatile organic compounds that have not been detected in any of the wells are not included in this table. Highlighted Values indicate an exceedance of the applicable MCP Method I Standard as follows: Exceeds applicable MCP Method I GW -2 or GW -3 standard Exceeds Upper Concentration Limit (UCL) MCP UCL = Massachusetts Contingency Plan Method 3 Upper Concentration Limits (310CMR 40 996) (Wave 2) MCP GW -2 = Massachusetts Contingency Plan Method I - GW -2 Standards (3 10 CMR 40 974) (Wave 2) MCP GW -3 = Massachusetts Contingency Plan Method 1 - GW -3 Standards (3 10 CMR 40 974) (Wave 2) NA = Not Applicable or Not Analyzed. ND = Not Detected Reporting limit not reported by previous environmental consultant. NR= Not reported by previous environmental consultant. J = Value estimated below laboratory reporting limit. U = Analyte not detected. Sample lower reporting limit is shown. * = LCS, LCSD, MS, MSD, MD, or Surrogate exceeds the control limits G: R WELTSF118]10]91G8M antl_ManNoim9\08M_RepotlslGahLbMeVAaN91Ta01al.da 88 of 88 Concentration ( /L) c d u MCP a U d Ground- a « 1= w i A v C o Well water '>, a, e o U Location Sample Classif- ID Date ication F F F F > MCP UCL 100,000 100,000 100,000 100,000 100,000 80,000 100,000 50,000 NL 100,000 MCP GW -2 9,000 50,000 50,000 10,000 50 8,000 90 30 NL 2 MCP GW -3 500 50,000 50 000 50,000 30,000 4,000 50,000 5,000 NL 50,000 MW -71D 5/27/2004GW 3 20 U 200 20 U 40 U 20 U 20 U 1.0 U 500 20 U 100 MW -71D 5/27/2004 20 U 200 20 U 40 U 20 U 20 U 74 520 20 U 100 MW -72S 8/9/2005 1.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 76 3.9 1.0 U 1.0 U MW -72S 1/20/2006 GW -2 2.0 U 10 1.0 U 2.0 U 1.0 U 1.0 U 1.0 U 2.4 1.0 U 1.0 U MW -72S 10/24/2007 2.0 U 10 1.0 U 2.0 U 3.0 1.0 U 1.0 U 3.2 1.0 U 0.50 U MW -73S 8/9/2005 50 U 500 50 U 100 U 50 U 50 U 0.77 J 50 U 50 U 1,500 MW -73S 9/28/2005 50 U 500 50 U 100 U 50 U 50 U 47 J 50 U 50 U 820 GW -2 MW -73S 1/20/2006 50 U 250 25 U 50 U 25 U 25 U 50 U 14 J 25 U 1,800 MW -73S 10/24/2007 50 U 250 25 U 50 U 25 U 25 U 38 7.0 J 25 U 590 MW -71D 6/1/2006 GW -3 1,000 U 5,000 500 U 1,000 U 500 U 1 500 U 5.9 J 21,000 500 U 500 U MW -75D 1 6/1/2006 GW -3 10,000 U 50,000 5,000 U 10,000 U 5,000 U 1 3,100 J 500 U 260,000 5,000 U 5,000 U Notes: Volatile organic compounds that have not been detected in any of the wells are not included in this table. Highlighted Values indicate an exceedance of the applicable MCP Method I Standard as follows: Exceeds applicable MCP Method I GW -2 or GW -3 standard Exceeds Upper Concentration Limit (UCL) MCP UCL = Massachusetts Contingency Plan Method 3 Upper Concentration Limits (310CMR 40 996) (Wave 2) MCP GW -2 = Massachusetts Contingency Plan Method I - GW -2 Standards (3 10 CMR 40 974) (Wave 2) MCP GW -3 = Massachusetts Contingency Plan Method 1 - GW -3 Standards (3 10 CMR 40 974) (Wave 2) NA = Not Applicable or Not Analyzed. ND = Not Detected Reporting limit not reported by previous environmental consultant. NR= Not reported by previous environmental consultant. J = Value estimated below laboratory reporting limit. U = Analyte not detected. Sample lower reporting limit is shown. * = LCS, LCSD, MS, MSD, MD, or Surrogate exceeds the control limits G: R WELTSF118]10]91G8M antl_ManNoim9\08M_RepotlslGahLbMeVAaN91Ta01al.da 88 of 88 r U I f u U a E d C y H N `o U '0' c -o 3 ch C .0 � F V 4110 R C 01 LL -0 C 7 nn am I I U I f u E E 0 U ryq c R y c s U c W c U o c U A C^y r P v1 O P -- 00 M ,O 7 M v C ,o P O O -- M M 7 r` r 00 P. -- N N M v, v, �p .p a0 00 P P. O -- N •� 00 N P N P N P N P N P N P N a, N 0 M 0 M 0 M 0 M 0 M 0 M 0 M 0 M 0 M 0 M _ M _ M .., M _ M _ M _ M _ M _ M _ M _ M _ M _ M _ M N M N M N N M N M 7 N M a E U O y 5. C, l- P 'D o0 O 7 O O O0 O O O _ P O, P P 1- 'D 'o 00 -S a o a r ao c r r d r v v v v v v v v v v v v v <r a a a c v eE— �, a 3 o « W a, a, a, a, r oo r D v e v v M y v v c N M o D v v v 02 P P P P P P P P P P P P P P P P a s A e ov a° L L R u e � c 0 •§ o s a y C6 � e a V B CL o 0 0 0 0 0 0 0 0 0 0 0 0 o 0 c 0 o 0 0 c 0 o 0 0 0 o 0 O 0 0 0 c 0 o 0 o 0 c 0 0 0= v o 00 0 �� 0o v � v v 0 ?_ 0 ao �+ 0 �` 0 0 �.i ri ao o• � o d e •c L GJ a v v a � o 0 0 0 0 o c o 0 o C c O o c o 0 0 0 0 o C o O c o c o 0 0 0 0 0 0 o 0 L C. O r o0 n `O n P b Q' ^- r C, ,O M 10 O ,O P V'1 00 V1 1� V1 P V, fV - V1 �� N Vl N Vt N V'1 N Vl N V1 N - N - N - 0 - 0 - 0 - 0 - 00 n n D; F a U C 0 O O r, ON N N N N N N N N N N N N N N N N N N N N N N P N v, P N 1O P N C, N a0 P N - O M ry O M O M 0 C M 0 O M O M •-- M M M C C L .+A M _ _ y, _ M _ yJ _ fJ M N - M _ _ M - - -� 7 7 Y M O M O M O M O M O M O M O M O M O M C M O M O M O M O M O M O M C M O M O M O M O M O M C M O M O M O M O M O M O M O M O M O M O M O M O M O 110, O i r D7 - N M 00 N 0 0 0 0 0 0 ,p O O O O O C O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O e E E 0 U U a U m 9 O N N N N ^ M Y M M m M m M m M M Y Y Y Y 7 Y Y Y Y Y Y Y Y Y Y Y Y �n �n v1 vi vi vi v1 vi vi vi � a s UU O � T A 7 � 00 Y 00 ^ O O O o0 O O O, 1- 00 a, O, 00 00 1- 00 00 O a0 w T l, O b M M N Y .O O C d Y N M M Y Y Y Y M Y Y M M M M M M M M M M Y M M M M M M M M M M M M M M o N N M N N ON, O� O� O� Q� O, O, T Q� O� O� O� O O� o a aL L a GZ 0 a o 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 a e �0 e 0 's r a s L a e a V 6 c o 0 0 0 0 0 0 0o h o^ o 0 0 o a M o o o 0 0 0 0 0 o c 0 0 0 0 c o 0 e W W a Be L d y L y G ; C O. 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N M 7 t� 00 O� O N M 4 � i 3 ._1 APPENDIX A MASSACHUSETTS DEPARTMENT OF ENVIRONMENTAL PROTECTION BUREAU OF WASTE SITE CLEANUP 108 TRANSMITTAL FORMS L71Massachusetts Department of Environmental Protection Bureau of Waste Site Cleanup BWSC108 COMPREHENSIVE RESPONSE ACTION TRANSMITTAL Release Tracking Number FORM & PHASE I COMPLETION STATEMENT Pursuant to 310 CMR 40.0484 (Subpart D) and 40.0800 (Subpart H) IA. SITE LOCATION: 11. Site Name: JFMR LUCENT TECHNOLOGIES MVW 12. Street Address: 11600 OSGOOD ST 3. City/Town: NORTH ANDOVER 4. ZIP Code: 018450000 © 5. Check here if a Tier Classification Submittal has been provided to DEP for this disposal site. ❑ a. Tier IA © b. Tier IB 0 c. Tier IC [:] d. Tier II I6. If applicable, provide the Permit Number: W016340 B. THIS FORM IS BEING USED (check all that apply) 1. Submit a Phase I Completion Statement, pursuant to 310 CMR 40.0484. 2. Submit a Revised Phase I Completion Statement, pursuant to 310 CMR 40.0484. ❑ 3. Submit a Phase II Scope of Work, pursuant to 310 CMR 40.0834. 4. Submit an interim Phase II Report. This report does not satisfy the response action deadline requirements in 310 CMR 40.0500. ❑ 5. Submit a final Phase II Report and Completion Statement, pursuant to 310 CMR 40.0836. 6. Submit a Revised Phase II Report and Completion Statement, pursuant to 310 CMR 40.0836. 7. Submit a Phase 111 Remedial Action Plan and Completion Statement, pursuant to 310 CMR 40.0862. 8. Submit a Revised Phase III Remedial Action Plan and Completion Statement, pursuant to 310 CMR 40.0862. 9. Submit a Phase IV Remedy Implementation Plan, pursuant to 310 CMR 40.0874. 10. Submit a Modified Phase IV Remedy Implementation Plan, pursuant to 310 CMR 40.0874. 11. Submit an As -Built Construction Report, pursuant to 310 CMR 40.0875. [� 12. Submit a Phase IV Status Report, pursuant to 310 CMR 40.0877. 13. Submit a Phase IV Completion Statement, pursuant to 310 CMR 40.0878 and 40.0879. Specify the outcome of Phase IV activities: (check one) Ea. Phase V Operation, Maintenance or Monitoring of the Comprehensive Remedial Action is necessary to achieve a Response Action Outcome. b. The requirements of a Class A Response Action Outcome have been met. No additional Operation, Maintenance or Monitoring is necessary to ensure the integrity of the Response Action Outcome. A completed Response Action Outcome Statement and Report (BWSC104) will be submitted to DEP. c. The requirements of a Class C Response Action Outcome have been met. No additional Operation, Maintenance or Monitoring is necessary to ensure the integrity of the Response Action Outcome. A completed Response Action Outcome Statement and Report (BWSC104) has been or will be submitted to DEP. d. The requirements of a Class C Response Action Outcome have been met. Further Operation, Maintenance or Monitoring of the remedial action is necessary to ensure that conditions are maintained and that further progress is made toward a Permanent Solution. A completed Response Action Outcome Statement and Report (BWSC104) has been or will be submitted to DEP. s 4/1/2009 Massachusetts Department of Environmental Protection Bureau of Waste Site Cleanup BWSC108 COMPREHENSIVE RESPONSE ACTION TRANSMITTAL Release Tracking Number FORM & PHASE I COMPLETION STATEMENT 31 -L] I 174 Pursuant to 310 CMR 40.0484 (Subpart D) and 40.0800 (Subpart H) B. THIS FORM IS BEING USED TO (cont.):(check all that apply) 14. Submit a Revised Phase IV Completion Statement, pursuant to 310 CMR 40.0878 and 40.0879. © 15. Submit a Phase V Status Report, pursuant to 310 CMR 40.0892. ❑✓ 16. Submit a Remedial Monitoring Report. (This report can only be submitted through eDEP.) a. Type of Report: (check one) R i. Initial Report Q ii. Interim Report iii. Final Report b. Frequency of Submittal: (check all that apply) i. A Remedial Monitoring Report(s) submitted monthly to address an Imminent Hazard. ii. A Remedial Monitoring Report(s) submitted monthly to address a Condition of Substantial Release Migration. F✓ iii. A Remedial Monitoring Report(s) submitted concurrent with a Status Report c. Status of Site: (check one) R i. Phase IV ✓❑ ii. Phase V ❑ iii. Remedy Operation Status F] iv. Class C RAO d. Number of Remedial Systems and/or Monitoring Programs: 4 A separate BWSC108A, CRA Remedial Monitoring Report, must be filled out for each Remedial System and/or Monitoring Program addressed by this transmittal form. ❑ 17. Submit a Remedy Operation Status, pursuant to 310 CMR 40.0893. El 18. Submit a Status Report to maintain a Remedy Operation Status, pursuant to 310 CMR 40.0893(2). Ei19. Submit a Transfer and/or a Modification of Persons Maintaining a Remedy Operation Status (ROS) , pursuant to 310 CMR 40.0893(5) (check one, or both, if applicable). a. Submit a Transfer of Persons Maintaining an ROS (the transferee should be the person listed in Section D, "Person Undertaking Response Actions"). b. Submit a Modification of Persons Maintaining an ROS (the primary representative should be the person listed in Section D, "Person Undertaking Response Actions"). c. Number of Persons Maintaining an ROS not including the primary representative: 20. Submit a Termination of a Remedy Operation Status, pursuant to 310 CMR 40.0893(6).(check one) a. Submit a notice indicating ROS performance standards have not been met. A plan and timetable pursuant to 310 CMR 140.0893(6)(b) for resuming the ROS are attached. b. Submit a notice of Termination of ROS. 21. Submit a Phase V Completion Statement, pursuant to 310 CMR 40.0894. Specify the outcome of Phase V activities: (check one) a. The requirements of a Class A Response Action Outcome have been met. No additional Operation, Maintenance or Monitoring is necessary to ensure the integrity of the Response Action Outcome. A completed Response Action Outcome Statement (BWSC104) will be submitted to DEP. b. The requirements of a Class C Response Action Outcome have been met. No additional Operation, Maintenance or ❑ Monitoring is necessary to ensure the integrity of the Response Action Outcome. A completed Response Action Outcome Statement and Report (BWSC104) will be submitted to DEP. c. The requirements of a Class C Response Action Outcome have been met. Further Operation, Maintenance or Monitoring of the remedial action is necessary to ensure that conditions are maintained and/or that further progress is made toward a Permanent Solution. A completed Response Action Outcome Statement and Report (BWSC104) will be submitted to DEP. 22. Submit a Revised Phase V Completion Statement, pursuant to 310 CMR 40.0894. [� 23. Submit a Post -Class C Response Action Outcome Status Report, pursuant to 310 CMR 40.0898. Revised: 4/1/2009 Page 2 of 5 4-j C r L71Massachusetts Department of Environmental Protection Bureau of Waste Site Cleanup BWSC108 COMPREHENSIVE RESPONSE ACTION TRANSMITTAL Release Tracking Number FORM $ PHASE I COMPLETION STATEMENT 3� - 174 Pursuant to 310 CMR 40.0484 (Subpart D) and 40.0800 (Subpart H) C. LSP SIGNATURE AND STAMP: I attest under the pains and penalties of perjury that I have personally examined and am familiar with this transmittal form, including any and all documents accompanying this submittal. In my professional opinion and judgment based upon application of (i) the standard of care in 309 CMR 4.02(1), (ii) the applicable provisions of 309 CMR 4.02(2) and (3), and 309 CMR 4.03(2), and (iii) the provisions of 309 CMR 4.03(3), to the best of my knowledge, information and belief, > if Section B indicates that a Phase 1, Phase It, Phase Ill, Phase IV or Phase V Completion Statement and/or a Termination of a Remedy Operation Status is being submitted, the response action(s) that is (are) the subject of this submittal (i) has (have) been developed and implemented in accordance with the applicable provisions of M.G.L. c. 21 E and 310 CMR 40.0000, (ii) is (are) appropriate and reasonable to accomplish the purposes of such response action(s) as set forth in the applicable provisions of M.G.L. c. 21 E and 310 CMR 40.0000, and (iii) comply(ies) with the identified provisions of all orders, permits, and approvals identified in this submittal; > if Section B indicates that a Phase H Scope of Work or a Phase 1V Remedy Implementation Plan is being submitted, the response action(s) that is (are) the subject of this submittal (i) has (have) been developed in accordance with the applicable provisions of M.G.L. c. 21 E and 310 CMR 40.0000, (ii) is (are) appropriate and reasonable to accomplish the purposes of such response action(s) as set forth in the applicable provisions of M.G.L. c. 21 E and 310 CMR 40.0000, and (iii) comply(ies) with the identified provisions of all orders, permits, and approvals identified in this submittal; > if Section B indicates that an As -Built Construction Report a Remedy Operation Status, a Phase IV, Phase V or Post -Class C RAO Status Report, a Status Report to Maintain a Remedy Operation Status, a Transfer or Modification of Persons Maintaining a Remedy Operation Status and/or a Remedial Monitoring Report is being submitted, the response action(s) that is (are) the subject of this submittal (i) is (are) being implemented in accordance with the applicable provisions of M.G.L. c. 21 E and 310 CMR 40.0000, (ii) is (are) appropriate and reasonable to accomplish the purposes of such response action(s) as set forth in the applicable provisions of M.G.L. c. 21 E and 310 CMR 40.0000, and (iii) comply(ies) with the identified provisions of all orders, permits, and approvals identified in this submittal. I am aware that significant penalties may result, including, but not limited to, possible fines and imprisonment, if I submit information which I know to be false, inaccurate or materially incomplete. 1. LSP #: 15888 2. First Name: JAMES J 3. Last Name: ISOUKUP 4. Telephone: 6036565480 5. Ext.: 6. FAX: 7. Signature: liames J Soukup 8. Date: 09/29/2009 9. LSP Stamp: (mm/dd/yyyy) f<e � Of Electronic site r", Revised: 4/1/2009 Page 3 of 5 L71Massachusetts Department of Environmental Protection Bureau of Waste Site Cleanup BWSC108 COMPREHENSIVE RESPONSE ACTION TRANSMITTAL Release Tracking Number FORM & PHASE I COMPLETION STATEMENT 3❑ - 174 Pursuant to 310 CMR 40.0484 (Subpart D) and 40.0800 (Subpart H) D. PERSON UNDERTAKING RESPONSE ACTIONS: 1. Check all that apply: ❑ a. change in contact name ❑ b. change of addressEl c. change in the person undertaking response actions 2. Name of Organization: ALCATEL-LUCENT 3. Contact First Name: GARY 4. Last Name: FISHER 5. Street: 600 MOUNTAIN AVENUE 6. Title: 7. City/Town: NEW PROVIDENCE 8. State: NJ 9. ZIP Code: 10. Telephone: 9085825771 ^� 11. Ext.: 1 12. FAX: 9085825771 E. RELATIONSHIP TO SITE OF PERSON UNDERTAKING RESPONSE ACTIONS: ❑ Check here to change relationship ❑✓ 1. RP or PRP ❑ a. Owner ❑ b. Operator ❑ c. Generator d. Transporter ✓❑ e. Other RP or PRP Specify: OTHER PRPS ❑ 2. Fiduciary, Secured Lender or Municipality with Exempt Status (as defined by M.G.L. c. 21 E, s. 2) ❑ 3. Agency or Public Utility on a Right of Way (as defined by M.G.L. c. 21 E, s. 50)) 10 4. Any Other Person Undertaking Response Actions Specify Relationship: . REQUIRED ATTACHMENT AND SUBMITTALS: 1. Check here if the Response Action(s) on which this opinion is based, if any, are (were) subject to any order(s), permit(s) ❑ and/or approval(s) issued by DEP or EPA. If the box is checked, you MUST attach a statement identifying the applicable provisions thereof. z. Check here to certify that the Chief Municipal Officer and the Local Board of Health have been notified of the submittal of any Phase Reports to DEP. 3. Check here to certify that the Chief Municipal Officer and the Local Board of Health have been notified of the availability of a Phase III Remedial Action Plan. ❑4. Check here to certify that the Chief Municipal Officer and the Local Board of Health have been notified of the availability of a Phase IV Remedy Implementation Plan. ❑5. Check here to certify that the Chief Municipal Officer and the Local Board of Health have been notified of any field work involving the implementation of a Phase IV Remedial Action. ❑6. If submitting a Transfer of a Remedy Operation Status (as per 310 CMR 40.0893(5)), check here to certify that a statement detailing the compliance history for the person making this submittal (transferee) is attached. ❑7. If submitting a Modification of a Remedy Operation Status (as per 310 CMR 40.0893(5)), check here to certify that a statement detailing the compliance history for each new person making this submittal is attached. ❑8. Check here if any non-updatable information provided on this form is incorrect, e.g. Site Name. Send corrections to: BWSC.eDEP@state.ma.us. © 9. Check here to certify that the LSP Opinion containing the material facts, data, and other information is attached. Revised: 4/1/2009 Page 4 of 5 - 1 _J E `r` L '41 Massachusetts Department of Environmental Protection Bureau of Waste Site Cleanup BWSC108 COMPREHENSIVE RESPONSE ACTION TRANSMITTAL Release Tracking Number FORM & PHASE I COMPLETION STATEMENT Pursuant to 310 CMR 40.0484 (Subpart D) and 40.0800 (Subpart H) G. CERTIFICATION OF PERSON UNDERTAKING RESPONSE ACTIONS: 1. I Gary Fisher , attest under the pains and penalties of perjury (i) that I have personally examined and am familiar with the information contained in this submittal, including any and all documents accompanying this transmittal form, (ii) that, based on my inquiry of those individuals immediately responsible for obtaining the information, the material information contained in this submittal is, to the best of my knowledge and belief, true, accurate and complete, and (iii) that I am fully authorized to make this attestation on behalf of the entity legally responsible for this submittal. I/the person or entity on whose behalf this submittal is made am/is aware that there are significant penalties, including, but not limited to, possible fines and imprisonment, for willfully submitting false, inaccurate, or incomplete information. >if Section B indicates that this is a Modification of a Remedy Operation Status (ROS), I attest under the pains and penalties of perjury that I am fully authorized to act on behalf of all persons performing response actions under the ROS as stated in 310 CMR 40.0893(5)(d) to receive oral and written correspondence from MassDEP with respect to performance of response actions under the ROS, and to receive a statement of fee amount as per 4.03(3). I understand that any material received by the Primary Representative from MassDEP shall be deemed received by all the persons perform ing response actions under the ROS, and I am aware that there are significant penalties, including, but not limited to, possible fines and imprisonment, for willfully submitting false, inaccurate or incomplete information. 2 By: Gary Fisher 3. Title: Signature 4. For: ALCATEL-LUCENT 5. Date: 09/29/2009 (Name of person or entity recorded in Section D) (mm/dd/yyyy) 6. Check here if the address of the person providing certification is different from address recorded in Section D. rT 7. Street: — L8. City/Town: I 11. Telephone: U 9. State: 10. ZIP Code: 12. Ext.: 13. FAX: YOU ARE SUBJECT TO AN ANNUAL COMPLIANCE ASSURANCE FEE OF UP TO $10,000 PER BILLABLE YEAR FOR THIS DISPOSAL SITE. YOU MUST LEGIBLY COMPLETE ALL RELEVANT SECTIONS OF THIS FORM OR DEP MAY RETURN THE DOCUMENT AS INCOMPLETE. IF YOU SUBMIT AN INCOMPLETE FORM, YOU MAY BE PENALIZED FOR MISSING A REQUIRED DEADLINE Date Stamp (DEP USE ONLY:) Received by DEP on 9/29/2009 4:18:08 PM r Revised: 4/1/2009 Page 5 of 5 L71Massachusetts Department of Environmental Protection Bureau of Waste Site Cleanup BWSC108A CRA REMEDIAL MONITORING REPORT Release Tracking Number Pursuant to 310 CMR 40.0800 (SUBPART H) El - 174 Remedial System or Monitoring Program: of: A. DESCRIPTION OF ACTIVE REMEDIAL SYSTEM OR ACTIVE REMEDIAL MONITORING PROGRAM: 1. Type of Active Remedial System or Active Remedial Monitoring Program: (check all that apply) 0 a. Active Remedial System: (check all that apply) ❑ i. NAPL Recovery ❑✓ ii. Soil Vapor Extraction/Bioventing [2] iii. Vapor -phase Carbon Adsorption ❑ iv. Groundwater Recovery ❑ v. Dual/Multi-phase Extraction ❑ vi. Aqueous -phase Carbon Adsorption ❑ vii. Air Stripping ❑ viii. Sparging/Biosparging ix. Cat/Thermal Oxidation ❑ x. Other Describe: 0 b. Application of Remedial Additives: (check all that apply) ✓❑ i. To the Subsurface ❑ ii. To Groundwater (Injection) ❑ iii. To the Surface ❑ c. Active Remedial Monitoring Program Without the Application of Remedial Additives: (check all that apply; Sections C, D and E are not required; attach supporting information, data, maps and/or sketches needed by checking Section F5) ❑ i. Reactive Wall ❑ ii. Natural Attenuation ❑ iii. Other Describe: 2. Mode of Operation: (check one) ❑ a. Continuous ❑✓ b. Intermittent ❑ c. Pulsed ❑ d. One-time Event Only ❑ e. Other: 3. System Effluent/Discharge: (check all that apply) ❑ a. Sanitary Sewer/POTW ❑ b. Groundwater Re-infiltration/Re-injection: (check one) ❑ i. Downgradient ❑ ii. Upgradient Q c. Vapor -phase Discharge to Ambient Air: (check one) ✓0 i. Off -gas Controls ❑ ii. No Off -gas Controls d. Drinking Water Supply ❑ e. Surface Water (including Storm Drains) ❑ f. Other Describe: B. MONITORING FREQUENCY: 1. Reporting period that is the subject of this submittal: From: 6/1/2006 -� To: 12/31/2008 (mm/dd/yyyy) (mm/dd/yyyy) 2. Number of monitoring events during the reporting period: (check one) ❑ a. System Startup: (if applicable) ❑ i. Days 1, 3, 6, and then weekly thereafter, for the first month. ❑ ii. Other Describe: o b. Post -system Startup (after first month) or Monitoring Program: ❑ i. Monthly ❑✓ ii. Quarterly ❑ iii. Other Describe: �✓ 3. Check here to certify that the number of required monitoring events were conducted during the reporting period. C. EFFLUENT/DISCHARGE REGULATION: (check one to indicate how the effluent/discharge limits were established) 1. NPDES: (check one) ❑ a. Remediation General Permit ❑ b. Individual Permit ❑ c. Emergency Exclusion Effective Date of Permit: Q 2. MCP Performance Standard MCP Citations(s): 140.0046 ❑ 3. DEP Approval Letter Date of Letter: ❑ 4. Other Describe: lr Revised: 2/9/2005 Page 1 of 3 L� L71Massachusetts Department of Environmental Protection Bureau of Waste Site Cleanup BWSC108A CRA REMEDIAL MONITORING REPORT Release Tracking Number Pursuant to 310 CMR 40.0800 (SUBPART H) 3l - 174 Remedial System or Monitoring Program: of: D. WASTEWATER TREATMENT PLANT OPERATOR: (check one) f7 1. Required due to Remedial Wastewater Treatment Plant in place for more than 30 days. a. Name: (�b. Grade: c. License No.: l d. License Exp. Date: 2. Not Required (mm/dd/yyyy) 4J Q 3. Not Applicable E. STATUS OF ACTIVE REMEDIAL SYSTEM OR ACTIVE REMEDIAL MONITORING PROGRAM DURING REPORTING PERIOD: (check all that apply) 0✓ 1. The Active Remedial System was functional one or more days during the Reporting Period. a. Days System was Fully Functional: 184 b. GW Recovered (gals): 10 4 c. NAPL Recovered (gals): 0 d. GW Discharged (gals): 10 r1 e. Avg. Soil Gas Recovery Rate (scfm): 1185 f. Avg. Sparging Rate (scfm) : 10 2. Remedial Additives: (check all that apply) Q a. No Remedial Additives applied during the Reporting Period. f i b. Enhanced Bioremediation Additives applied: (total quantity applied at the site for the current reporting period) F] i. Nitrogen/Phosphorus: 11 ii. Peroxides: , Name of Additive Date Quantity Units Name of Additive I Date Quantity JUnits f, iii. Microorganisms: iv. Other: rN Name of Additive Date Quantity Units Name of Additive Date Quantity jUnits I N c. Chemical oxidation/reduction additives applied: (total quantity applied at the site for the current reporting period) r-., i. Permanganates: El ii. Peroxides: Name of Additive Date Quantity Units Name of Additive Date Quantity Units r' �J I F] iii. Persulfates: F] iv. Other: Name of Additive Date Quantity Units Name of Additive Date Quantity Units n Revised: 2/9/2005 rti Page 2 of 3 r i 4--, F41 r. Massachusetts Department of Environmental Protection Bureau of Waste Site Cleanup BWSC108A CRA REMEDIAL MONITORING REPORT Release Tracking Number Ll Pursuant to 310 CMR 40.0800 (SUBPART H){{�� 3] - 174 Redial System or Monitoring Program: t! � of:® emof: E. STATUS OF ACTIVE REMEDIAL SYSTEM OR ACTIVE REMEDIAL MONITORING PROGRAM DURING REPORTING PERIOD: (cont.) (check all that apply) nd. Other additives applied: (total quantity applied at the site for the current reporting period) Name of Additive Date lQuantity Units Name of Additive Date Quantity Units e. Check here if any additional Remedial Additives were applied. Attach list of additional additives and include Name of Additive, Date Applied, Quantity Applied and Units (in gals. or lbs.) F. SHUTDOWNS OF ACTIVE REMEDIAL SYSTEM OR ACTIVE REMEDIAL MONITORING PROGRAM: (check all that apply) ❑ 1. The Active Remedial System had unscheduled shutdowns on one or more occasions during the Reporting Period. a. Number of Unscheduled Shutdowns: b. Total Number of Days of Unscheduled Shutdowns: c. Reason(s) for Unscheduled Shutdowns: 0 2. The Active Remedial System had scheduled shutdowns on one or more occasions during the Reporting Period. a. Number of Scheduled Shutdowns: 16 1 248 b. Total Number of Days of Scheduled Shutdowns: c. Reason(s) for Scheduled Shutdowns: PULSED OPERATION BECAUSE CONTAMINANT REMOVAL VIA SVE IS VERY LOW. c3. The Active Remedial System or Active Remedial Monitoring Program was permanently shutdown/discontinued during the Reporting Period. a. Date of Final System or Monitoring Program Shutdown: b. No Further Effluent Discharges. (mm/dd/yyyy) ❑c. No Further Application of Remedial Additives planned; sufficient monitoring completed to demonstrate compliance with 310 CMR 40.0046. d. No Further Submittals Planned. e. Other: Describe: G. SUMMARY STATEMENTS: (check all that apply for the current reporting period) 1. All Active Remedial System checks and effluent analyses required by the approved plan and/or permit were performed when applicable. Q2. There were no significant problems or prolonged (>25% of reporting period) unscheduled shutdowns of the Active Remedial System. Q3. The Active Remedial System or Active Remedial Monitoring Program operated i n conformance with the MCP, and all applicable approval conditions and/or permits. 4. Indicate any Operational Problems or Notes: BUILDING 30 SOIL VAPOR EXTRACTION SYSTEM 5. Check here if additional/supporting Information, data, maps, and/or sketches are attached to the form. Revised: 2/9/2005 Page 3 of 3 n 4 n �r rl V n t 4 F-4 F f�T U M ti �L n Massachusetts Department of Environmental Protection Bureau of Waste Site Cleanup BWSC108A CRA REMEDIAL MONITORING REPORT Release Tracking Number Pursuant to 310 CMR 40.0800 (SUBPART H)17LI Remedial System or Monitoring Program: of: A. DESCRIPTION OF ACTIVE REMEDIAL SYSTEM OR ACTIVE REMEDIAL MONITORING PROGRAM: 1. Type of Active Remedial System or Active Remedial Monitoring Program: (check all that apply) ❑✓ a. Active Remedial System: (check all that apply) ❑ i. NAPL Recovery ❑ ii. Soil Vapor Extraction/Bioventing iii. Vapor -phase Carbon Adsorption ❑✓ iv. Groundwater Recovery ❑ v. Dual/Multi-phase Extraction ❑ vi. Aqueous -phase Carbon Adsorption Q vii. Air Stripping ❑ viii. Sparging/Biosparging ix. Cat/Thermal Oxidation ❑ x. Other Describe: 17 b. Application of Remedial Additives: (check all that apply) ❑ i. To the Subsurface ❑ ii. To Groundwater (Injection) ❑ iii. To the Surface ❑ c. Active Remedial Monitoring Program Without the Application of Remedial Additives: (check all that apply; Sections C, D and E are not required; attach supporting information, data, maps and/or sketches needed by checking Section 175) ❑ i. Reactive Wall ❑ ii. Natural Attenuation ❑ iii. Other Describe: 2. Mode of Operation: (check one) ❑ a. Continuous Q b. Intermittent ❑ c. Pulsed ❑ d. One-time Event Only ❑ e. Other: 3. System Effluent/Discharge: (check all that apply) ❑ a. Sanitary Sewer/POTW ❑ b. Groundwater Re-infiltration/Re-injection: (check one) ❑ i. Downgradient ❑ ii. Upgradient ❑✓ c. Vapor -phase Discharge to Ambient Air: (check one) 0 i. Off -gas Controls ❑ ii. No Off -gas Controls r7 d. Drinking Water Supply ❑✓ e. Surface Water (including Storm Drains) ❑ f. Other Describe: B. MONITORING FREQUENCY: 1. Reporting period that is the subject of this submittal: From: 6/1/2006 To: 12/31/2008 (mm/dd/yyyy) (mm/dd/yyyy) 2. Number of monitoring events during the reporting period: (check one) ❑ a. System Startup: (if applicable) ❑ i. Days 1, 3, 6, and then weekly thereafter, for the first month. ❑ ii. Other Describe: b. Post -system Startup (after first month) or Monitoring Program: ❑ i. Monthly ❑ ii. Quarterly © iii. Other Describe: MONTHLY WHEN SYSTEM WAS IN OPERATION ❑ 3. Check here to certify that the number of required monitoring events were conducted during the reporting period. C. EFFLUENT/DISCHARGE REGULATION: (check one to indicate how the effluent/discharge limits were established) Q 1. NPDES: (check one) Z a. Remediation General Permit L__I b. Individual Permit F -1c. Emergency Exclusion Effective Date of Permit: 8/1/2006 ❑ 2. MCP Performance Standard MCP Citations(s): ❑ 3. DEP Approval Letter Date of Letter: ❑ 4. Other Describe: Revised: 2/9/2005 Page 1 of 3 L�, L71Massachusetts Department of Environmental Protection Bureau of Waste Site Cleanup CRA REMEDIAL MONITORING REPORT Pursuant to 310 CMR 40.0800 (SUBPART H) Remedial System or Monitoring Program: of: D. WASTEWATER TREATMENT PLANT OPERATOR: (check one) 0✓ 1. Required due to Remedial Wastewater Treatment Plant in place for more than 30 days. a. Name: ROBERT RICARD I b. Grade: 6-C c. License No.: 10524 12/31/2009 d. License Exp. Date: ❑ 2. Not Required (mm/dd/yyyy) F1 3. Not Applicable BWSC108A Release Tracking Number 33 - 174 E. STATUS OF ACTIVE REMEDIAL SYSTEM OR ACTIVE REMEDIAL MONITORING PROGRAM DURING REPORTING PERIOD: (check all that apply) 1. The Active Remedial System was functional one or more days during the Reporting Period. a. Days System was Fully Functional: 16 b. GW Recovered (gals): 3840 c. NAPL Recovered (gals): 0 d. GW Discharged (gals): 13840 e. Avg. Soil Gas Recovery Rate (scfm): I f. Avg. Sparging Rate (scfm) : Z 2. Remedial Additives: (check all that apply) El a. No Remedial Additives applied during the Reporting Period. 0 b. Enhanced Bioremediation Additives applied: (total quantity applied at the site for the current reporting period) F] i. Nitrogen/Phosphorus: 11 ii. Peroxides: Name of Additive Date Quantity Units Name of Additive Date Quantity Units iii. Microorganisms: iv. Other: Name of Additive Date Quantity Units Name of Additive Date Quantity Units Q✓ c. Chemical oxidation/reduction additives applied: (total quantity applied at the site for the current reporting period) Iv l i. Permanganates: Iv(] ii. Peroxides: F] iii. Persulfates: Name of Additive Date Quantity Units iv. Other: Name of Additive I Date l Quantity j Units Revised: 2/9/2005 Page 2 of 3 Name of Additive Date Quantity Units Name of Additive Date Quantity Units 20% SODIUM PERMANGerrrtow 38000 LBS MODIFIED FENTON'S 9116!2006 25500 LBS 5111/2007 16000 LBS 20% SODIUM PERMANG 10/7/2006 34000 LBS MODIFIED FENTON'S 20% SODIUM PERMANG 10i612ooe 68900 LBS MODIFIED FENTON'S 101512007 16000 LBS F] iii. Persulfates: Name of Additive Date Quantity Units iv. Other: Name of Additive I Date l Quantity j Units Revised: 2/9/2005 Page 2 of 3 F, I u- f 4 G r ki Massachusetts Department of Environmental Protection Bureau of Waste Site Cleanup BWSC108A 17LICRA REMEDIAL MONITORING REPORT Release Tracking Number Pursuant to 310 CMR 40.0800 (SUBPART H)�---� 3❑ - 174 Remedial System or Monitoring Program: l2 _1 of: E. STATUS OF ACTIVE REMEDIAL SYSTEM OR ACTIVE REMEDIAL MONITORING PROGRAM DURING REPORTING PERIOD: (cont.) (check all that apply) ❑ d. Other additives applied: (total quantity applied at the site for the current reporting period) Name of Additive Date Quantity Units Name of Additive Date Quantity Units ❑ e. Check here if any additional Remedial Additives were applied. Attach list of additional additives and include Name of Additive, Date Applied, Quantity Applied and Units (in gals. or lbs.) F. SHUTDOWNS OF ACTIVE REMEDIAL SYSTEM OR ACTIVE REMEDIAL MONITORING PROGRAM: (check all that apply) ❑ 1. The Active Remedial System had unscheduled shutdowns on one or more occasions during the Reporting Period a. Number of Unscheduled Shutdowns: b. Total Number of Days of Unscheduled Shutdowns: c. Reason(s) for Unscheduled Shutdowns: ❑ 2. The Active Remedial System had scheduled shutdowns on one or more occasions during the Reporting Period. a. Number of Scheduled Shutdowns: b. Total Number of Days of Scheduled Shutdowns: c. Reason(s) for Scheduled Shutdowns: Fi 3. The Active Remedial System or Active Remedial Monitoring Program was permanently shutdown/discontinued during the Reporting Period. a. Date of Final System or Monitoring Program Shutdown: (]b. No Further Effluent Discharges. (mm/dd/yyyy) ❑c. No Further Application of Remedial Additives planned; sufficient monitoring completed to demonstrate compliance with 310 CMR 40.0046. ❑ d. No Further Submittals Planned. ❑ e. Other: Describe: G. SUMMARY STATEMENTS: (check all that apply for the current reporting period) 0 1. All Active Remedial System checks and effluent analyses required by the approved plan and/or permit were performed when applicable. 2. There were no significant problems or prolonged (>25% of reporting period) unscheduled shutdowns of the Active Remedial System. Q3. The Active Remedial System or Active Remedial Monitoring Program operated i n conformance with the MCP, and all applicable approval conditions and/or permits. 4. Indicate any Operational Problems or Notes: BUILDING 71. PLEASE REFER TO ATTACHED PHASE V REPORT. THE SYSTEM HAS NOT BEEN OPERATED CONTINUOUSLY SINCE COMMENCEMENT OF ISCO PROGRAM IN DEC. 2003. Cj5. Check here if additional/supporting Information, data, maps, and/or sketches are attached to the form. Revised: 2/9/2005 Page 3 of 3 w u a� C-. t uNi .Y Z E E } N N N N N tl► N N N N N N N N N N N N N N m .E a J } } } 00 C U ~ C Wo N i m tr C ` CL jo` o 0�`o co o o N P- M "' Vol M0 In N C f0 w J .Y a) CO oaaoao51 ElS0oao❑oo❑o m U L Z w 0 °o c c 0 °cc N L U U O` L U C v� UU U �❑ r L1') O V OLnM d O _ O cf~`0 O c O 4) c0 a c L U C rn 3 c a O ° ca U m �E ami 4� .0 O a c `) L. ra c _ °_� m r_ aC 7 CU L ._ LL c C o c 3 a c O O m o E H m U m C GC N U C 0 A= a c > W F- N c ° ° cm 0 4 Z Zm a) Z H W W J c V Q o C E = z z z a~ J O 0Q a d 0 `�° cc W Q W Q .j W p UJ Z U a. `o W W W 0Q Q m m Z W o 0 rn 15 G' 0 0 0 0 W Z W Z LU LLI �o o m ccu•v c v = O O O �,, J= V O H W W J a N O c o0 J Q Ml w � E V Z== Z V W i P G a' �- J= Q U) U) M J 00 Q= '+ V (D t/) U E m v c H V V V Q Z Z W LLJ N W Lu F- J W Z J = V U O N 3 W C c ci .' O G G W v) N Z N r d a Z Q Z 2 Q I (L Y v J m � �� T .' N Z m W y N O O W W Q V W O �' Z m t p W Z o c .= Q Q m m V V U- J Z Z > c y QW j �, m co so to co so so o co m so m so so so co co 0 v� 0 so 0 W � N N N N N N N N N N m UW d i• ti N ti N N N N N N N N N c ti r� ti i ti ti ti i ti 1 ti m ° 00 00 00 00 00 00V. J1 00 00 00 00 W 00 O 00 00 O - O 00 O N C C N L a° o f 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 L a @ (7 U C7 C7 (� C9 U C7 U t') C9 C7 U U C7 U t9 C9 G CLACD IL21 LL m F1 L C I� Massachusetts Department of Environmental Protection Bureau of Waste Site Cleanup BWSC108A CRA REMEDIAL MONITORING REPORT Release Tracking Number Pursuant to 310 CMR 40.0800 (SUBPART H) — 3❑ - 174 7L __ Remedial System or Monitoring Program: l3 of: A. DESCRIPTION OF ACTIVE REMEDIAL SYSTEM OR ACTIVE REMEDIAL MONITORING PROGRAM: 1. Type of Active Remedial System or Active Remedial Monitoring Program: (check all that apply) ❑✓ a. Active Remedial System: (check all that apply) ❑ i. NAPL Recovery ii. Soil Vapor Extraction/Bioventing iii. Vapor -phase Carbon Adsorption ❑ iv. Groundwater Recovery ❑ v. Dual/Multi-phase Extraction ❑ vi. Aqueous -phase Carbon Adsorption ❑ vii. Air Stripping ® viii. Sparging/Biosparging ❑ ix. Cat/Thermal Oxidation ❑ x. Other Describe: b. Application of Remedial Additives: (check all that apply) ❑ i. To the Subsurface ❑ ii. To Groundwater (Injection) ❑ iii. To the Surface ❑ c. Active Remedial Monitoring Program Without the Application of Remedial Additives: (check all that apply; Sections C, D and E are not required; attach supporting information, data, maps and/or sketches needed by checking Section F5) ❑ i. Reactive Wall ❑ ii. Natural Attenuation ❑ iii. Other Describe: 2. Mode of Operation: (check one) _ Q✓ a. Continuous ❑ b. Intermittent ❑ c. Pulsed ❑ d. One-time Event Only ❑ e. Other: 3. System Effluent/Discharge: (check all that apply) ❑ a. Sanitary Sewer/POTW ❑ b. Groundwater Re-infiltration/Re-injection: (check one) ❑ i. Downgradient ❑ ii. Upgradient W c. Vapor -phase Discharge to Ambient Air: (check one) i. Off -gas Controls ❑ ii. No Off -gas Controls d. Drinking Water Supply ❑ e. Surface Water (including Storm Drains) ❑ f. Other Describe: 1. MONITORING FREQUENCY: �� �� 1. Reporting period that is the subject of this submittal: From: 6/1/2006 To: 12/31/2008 (mm/dd/yyyy) (mm/dd/yyyy) 2. Number of monitoring events during the reporting period: (check one) ❑ a. System Startup: (if applicable) ❑ i. Days 1, 3, 6, and then weekly thereafter, for the first month. ❑ ii. Other Describe: Qb. Post -system Startup (after first month) or Monitoring Program: © i. Monthly ❑ ii. Quarterly ❑ iii. Other Describe: ❑✓ 3. Check here to certify that the number of required monitoring events were conducted during the reporting period. C. EFFLUENT/DISCHARGE REGULATION: (check one to indicate how the effluent/discharge limits were established) 1. NPDES: (check one) ❑ a. Remediation General Permit ❑ b. Individual Permit ❑ c. Emergency Exclusion Effective Date of Permit: ❑✓ 2. MCP Performance Standard MCP Citations(s): 140.0049 ❑ 3. DEP Approval Letter Date of Letter: ❑ 4. Other Describe: h Kevisea: z191zuo5 Page 1 of 3 i u 71 Massachusetts Department of Environmental Protection Bureau of Waste Site Cleanup BWSC108A CRA REMEDIAL MONITORING REPORT Release Tracking Number Pursuant to 310 CMR 40.0800 (SUBPART H) Q Remedial System or Monitoring Program: of: D. WASTEWATER TREATMENT PLANT OPERATOR: (check one) 1. Required due to Remedial Wastewater Treatment Plant in place for more than 30 days. a. Name: b. Grade: c. License No.: d. License Exp. Date: 2. Not Required (mm/dd/yyyy) 0 3. Not Applicable E. STATUS OF ACTIVE REMEDIAL SYSTEM OR ACTIVE REMEDIAL MONITORING PROGRAM DURING REPORTING PERIOD: (check all that apply) 1,171 1. The Active Remedial System was functional one or more da s during the Reporting Period. a. Days System was Fully Functional: 904 b. GW Recovered (gals): 10 c. NAPL Recovered (gals): 0 d. GW Discharged (gals): Fo- e. e. Avg. Soil Gas Recovery Rate (scfm): 11080 f. Avg. Sparging Rate (scfm) : 1 2. Remedial Additives: (check all that apply) Z✓ a. No Remedial Additives applied during the Reporting Period. r b. Enhanced Bioremediation Additives applied: (total quantity applied at the site for the current reporting period) El i. Nitrogen/Phosphorus: Name of Additive Date Quantity Units J iii. Microorganisms: Name of Additive Date I Quantity I Units ii. Peroxides: I Name of Additive I Date I Quantity I Units I c. Chemical oxidation/reduction additives applied: (total quantity applied at the site for the current reporting period) Eli. Permanganates: F ii. Peroxides: Name of Additive Date I Quantity I Units I Name of Additive I Date lQuantity JUnits iii. Persulfates: Name of Additive Date Quantity Units U iv. Other. Name of Additive jDate Quantity Units Revised: 2/9/2005 Page 2 of 3 F P LJ El Fj' r r r i I u L C C F U Massachusetts Department of Environmental Protection Bureau of Waste Site Cleanup BWSC108A CRA REMEDIAL MONITORING REPORT Release Tracking Number Pursuant to 310 CMR 40.0800 (SUBPART H) F3] 8] - 174 Remedial System or Monitoring Program: t� 1 of:® E. STATUS OF ACTIVE REMEDIAL SYSTEM OR ACTIVE REMEDIAL MONITORING PROGRAM DURING REPORTING PERIOD: (cont.) (check all that apply) d. Other additives applied: (total quantity applied at the site for the current reporting period) Name of Additive Date Quantity Units Name of Additive Date Quantity Units F e. Check here if any additional Remedial Additives were applied. Attach list of additional additives and include Name of Additive, Date Applied, Quantity Applied and Units (in gals. or lbs.) F. SHUTDOWNS OF ACTIVE REMEDIAL SYSTEM OR ACTIVE REMEDIAL MONITORING PROGRAM: (check all that apply) 1. The Active Remedial System had unscheduled shutdowns on one or more occasions during the Reporting Period. a. Number of Unscheduled Shutdowns: 2 b. Total Number of Days of Unscheduled Shutdowns: 18 c. Reason(s) for Unscheduled Shutdowns: REPAIRS TO CONTROL SYSTEM. 0 2. The Active Remedial System had scheduled shutdowns on one or more occasions during the Reporting Period. a. Number of Scheduled Shutdowns: 16 122 b. Total Number of Days of Scheduled Shutdowns: c. Reason(s) for Scheduled Shutdowns: ROUTINE MAINTENANCE OF SVE BLOWER INCLUDING OIL CHANGES AND BELT ADJUSTMENT 3. The Active Remedial System or Active Remedial Monitoring Program was permanently shutdown/discontinued during the Reporting Period. a. Date of Final System or Monitoring Program Shutdown: b. No Further Effluent Discharges. (mm/dd/yyyy) ❑c. No Further Application of Remedial Additives planned; sufficient monitoring completed to demonstrate compliance with 310 CMR 40.0046. d. No Further Submittals Planned. e. Other: Describe: G. SUMMARY STATEMENTS: (check all that apply for the current reporting period) a 1. All Active Remedial System checks and effluent analyses required by the approved plan and/or permit were performed when applicable. 2. There were no significant problems or prolonged (>25% of reporting period) unscheduled shutdowns of the Active Remedial System. a3. The Active Remedial System or Active Remedial Monitoring Program operated in conformance with the MCP, and all applicable approval conditions and/or permits. 4. Indicate any Operational Problems or Notes: THIS SYSTEM IS CONNECTED TO THE BUILDING 70/71 GWTP DETAILED AS SYSTEM 2 OF 4. 5. Check here if additional/supporting Information, data, maps, and/or sketches are attached to the form. ERevised: 2/9/2005 Page 3 of 3 C O () rn cc a a� °QC'. yyz :E yE } 7 Z > E J d m rn d pp c > Y r m P_ C) > E a a N y �p ca C O mD _y N N M � o y c y C E a) E a) U to O 4) O a U N M C m Y w J _p 0o ❑❑ DID ❑❑❑❑❑❑❑❑❑❑❑❑❑❑❑❑ o U L Z E U) (D a) CO D O O '0 O U .` L U O U cc L v y O p (7 co �❑U � eh m a� w 0 c 0 � 0 'c o m acLm LM) 3 C c C ° v V r U ° � O a c O c N I- a Q) _ m C - w E m C .0 7 C N U L ._ LL C o c 3 a — c E H O N U %-° N m O Z a) .: ap o U 0 c W M O � U � as m O 4 _ZZ x LU c c 0 a) m c C C 120 a o O QZ c w E o F y n CL c Vcc t U Z m m } Rf W g o o, i° m E d� 2� o o C a) mL U m c ; o _j o j3y 4 U E v c Q H W G!- .0 p W Z o U) F- m c ti w cu c:5 a) E o y QLL N E R y m o N m LL :3a) op t) a w(o cn p M W E E N o w O v m o E�y cw a r ci V C d L a a° N c0 (L U 0 ❑ 11 LL 1 ( O () rn cc a ri u ri u I, u u n i L, 71 i U IL71Massachusetts Department of Environmental Protection Bureau of Waste Site Cleanup BWSC108A CRA REMEDIAL MONITORING REPORT Release Tracking Number Pursuant to 310 CMR 40.0800 (SUBPART H) F3] - 174 Remedial System or Monitoring Program: ® of: A. DESCRIPTION OF ACTIVE REMEDIAL SYSTEM OR ACTIVE REMEDIAL MONITORING PROGRAM: 1. Type of Active Remedial System or Active Remedial Monitoring Program: (check all that apply) ❑✓ a. Active Remedial System: (check all that apply) ❑ i. NAPL Recovery ❑ ii. Soil Vapor Extraction/Bioventing iii. Vapor -phase Carbon Adsorption ❑✓ iv. Groundwater Recovery ❑ v. Dual/Multi-phase Extraction ❑ vi. Aqueous -phase Carbon Adsorption 0 vii. Air Stripping viii. Sparging/Biosparging ix. Cat/Thermal Oxidation x. Other Describe: 17 b. Application of Remedial Additives: (check all that apply) ❑ i. To the Subsurface ❑ ii. To Groundwater (Injection) ❑ iii. To the Surface ❑ c. Active Remedial Monitoring Program Without the Application of Remedial Additives: (check all that apply; Sections C, D and E are not required; attach supporting information, data, maps and/or sketches needed by checking Section F5) ❑ i. Reactive Wall ❑ ii. Natural Attenuation ❑ iii. Other Describe: 2. Mode of Operation: (check one) ❑ a. Continuous Q b. Intermittent ❑ c. Pulsed ❑ d. One-time Event Only ❑ e. Other: 3. System Effluent/Discharge: (check all that apply) ❑ a. Sanitary Sewer/POTW ❑ b. Groundwater Re-infiltration/Re-injection: (check one) ❑ i. Downgradient ❑ ii. Upgradient ❑ c. Vapor -phase Discharge to Ambient Air: (check one) i. Off -gas Controls ❑ ii. No Off -gas Controls ❑ d. Drinking Water Supply ❑✓ e. Surface Water (including Storm Drains) ❑ f. Other Describe: B. MONITORING FREQUENCY: 1. Reporting period that is the subject of this submittal: From: 6/1/2006 To: 112/31/2008 (mm/dd/yyyy) (mm/dd/yyyy) 2. Number of monitoring events during the reporting period: (check one) ❑ a. System Startup: (if applicable) ❑ i. Days 1, 3, 6, and then weekly thereafter, for the first month. ❑ ii. Other Describe: Qb. Post -system Startup (after first month) or Monitoring Program: ❑ i. Monthly ❑ ii. Quarterly © iii. Other Describe: MONTHLY WHEN IN OPERATION. �✓ 3. Check here to certify that the number of required monitoring events were conducted during the reporting period. C. EFFLUENTIDISCHARGE REGULATION: (check one to indicate how the effluent/discharge limits were established) f7✓ 1. NPDES: (check one) ❑V a. Remediation General Permit ❑ b. Individual Permit ❑ c. Emergency Exclusion Effective Date of Permit: 8/1/2006 ❑ 2. MCP Performance Standard MCP Citations(s): ❑ 3. DEP Approval Letter Date of Letter: ❑ 4. Other Describe: Revised: 2/9/2005 Page 1 of 3 Massachusetts Department of Environmental Protection L71 Bureau of Waste Site Cleanup BWSC108A CRA REMEDIAL MONITORING REPORT Release Tracking Number Pursuant to 310 CMR 40.0800 (SUBPART H) Remedial System or Monitoring Program: !w 1 of: D. WASTEWATER TREATMENT PLANT OPERATOR: (check one) 1. Required due to Remedial Wastewater Treatment Plant in place for more than 30 days:__ a. Name: ROBERT R1 ARD I b. Grade: 6-C c. License No.: 10524 12/31/2009 d. License Exp. Date: 2. Not Required (mm/dd/yyyy) ❑ 3. Not Applicable E. STATUS OF ACTIVE REMEDIAL SYSTEM OR ACTIVE REMEDIAL MONITORING PROGRAM DURING REPORTING PERIOD: (check all that apply) Q1. The Active Remedial System was functional one or more days during the Reporting Period. a. Days System was Fully Functional: 1718 b. GW Recovered (gals): 120678400 c. NAPL Recovered (gals): 10 d. GW Discharged (gals): 20678400 e. Avg. Soil Gas Recovery Rate (scfm): 1 f. Avg. Sparging Rate (scfm) : 2. Remedial Additives: (check all that apply) Q✓ a. No Remedial Additives applied during the Reporting Period. b. Enhanced Bioremediation Additives applied: (total quantity applied at the site for the current reporting period) F] i. Nitrogen/Phosphorus: ❑ ii. Peroxides: Name of Additive I Date I Quantity I Name of Additive I Date lQuantitv Units J iii. Microorganisms: Name of Additive I Date I Quantity I Units 1-1 c. Chemical oxidation/reduction additives applied: (total quantity applied at the site for the current reporting period) Eli. Permanganates: Name of Additive Date Quantity Units iii. Persulfates: Name of Additive Date Quantity Units Fii. Peroxides: Name of Additive Date Quantity Units iv. Other: Name of Additive jDate Quantity Units Revised: 2/9/2005 Page 2 of 3 n W u Lj n n Li Massachusetts Department of Environmental Protection Bureau of Waste Site Cleanup BWSC108A I j CRA REMEDIAL MONITORING REPORT Release Tracking Number Pursuant to 310 CMR 40.0800 (SUBPART H) 3] 3] - 174 Remedial System or Monitoring Program: L'* 1 of: E. STATUS OF ACTIVE REMEDIAL SYSTEM OR ACTIVE REMEDIAL MONITORING PROGRAM DURING REPORTING PERIOD: (cont.) (check all that apply) d. Other additives applied: (total quantity applied at the site for the current reporting period) Name of Additive Date Quantity Units Name of Additive Date Quantity Units e. Check here if any additional Remedial Additives were applied. Attach list of additional additives and include Name of Additive, Date Applied, Quantity Applied and Units (in gals. or lbs.) F. SHUTDOWNS OF ACTIVE REMEDIAL SYSTEM OR ACTIVE REMEDIAL MONITORING PROGRAM: (check all that apply) Q✓ 1. The Active Remedial System had unscheduled shutdowns on one or more occasions during the Reporting Period. a. Number of Unscheduled Shutdowns: 3 b. Total Number of Days of Unscheduled Shutdowns: 4 c. Reason(s) for Unscheduled Shutdowns: ELECTRICAL POWER OUTAGE 2. The Active Remedial System had scheduled shutdowns on one or more occasions during the Reporting Period. a. Number of Scheduled Shutdowns: 2b. Total Number of Days of Scheduled Shutdowns: 222 c. Reason(s) for Scheduled Shutdowns: DEC. 2007 - WELL PUMP REPAIR. JULY - DEC. 2008 - EVALUATING CHANGES TO PLUME. 3. The Active Remedial System or Active Remedial Monitoring Program was permanently shutdown/discontinued during the Reporting Period. a. Date of Final System or Monitoring Program Shutdown: 11 b. No Further Effluent Discharges. (mm/dd/yyyy) ❑c. No Further Application of Remedial Additives planned; sufficient monitoring completed to demonstrate compliance with 310 CMR 40.0046. d. No Further Submittals Planned. e. Other: Describe: G. SUMMARY STATEMENTS: (check all that apply for the current reporting period) a1. All Active Remedial System checks and effluent analyses required by the approved plan and/or permit were performed when applicable. 2. There were no significant problems or prolonged (>25% of reporting period) unscheduled shutdowns of the Active Remedial System. 3. The Active Remedial System or Active Remedial Monitoring Program operated i n conformance with the MCP, and all applicable approval conditions and/or permits. 4. Indicate any Operational Problems or Notes: THIS IS THE BUILDING 51 SYSTEM DETAILED IN THE ATTACHED PHASE V REPORT. Ej 5. Check here if additional/supporting Information, data, maps, and/or sketches are attached to the form. nevisea: ZiaiZuva Page 3 of 3 f"l r, u n V A V 7 D n D C a� (D �_ C'• V1 .- :3 Z E } J N N N d N d N N N 0 N 01 N y N N N 0) N 01 N 01 N d N d N d N d N d N d0) N N N 01 d m } } } } } } } } } } } } } } } } } } } Go c a .w � Ua) J J J J —0 J J —(Da J 1 J J J J J J J J J J J J f0 r ? m C'._ 0 _.. CEJ} z m°' rn (L _c C) U d N J 0 Y w V r to 'ccC rp O m N _ -9 N a7 M a O N N C E E m N o (D C a O U O ti v Y �.. J C a) cu �rZ D❑❑❑❑DDD❑❑❑❑❑❑❑❑D❑❑❑ 16 co O N d O O O" O U2 N m C C L U 2 U ca L to C Q (9 O r_ co a7 0 -6�=�� 0 0o C a7 ca n c L L) CL G c c3 0 �+ U O a c ate+ O L. CL a) O ca a): € (Q C7 O C O U L -- LL C o c C 3 a c CD v O m o E F. U 0 oz U •—> a ° o 0 c Wg o U W E C w CU +•+ 4 Z Zc 0E� ~ Z � C 0� o a s c a7 E u7 E N o Q cm .7 c0D Ma c V Z '= L > Cl LU CL a? o c rc o v F w 4) � � o o m cow m O Qw J= o c E— co o co C Cy U E u 2 c 0 U) H Lu FS m 5 c o U w 3: cn i = 00 V O wZ o V c ev w aci E o y �JE a, o LL � LLca N LU N !0 O N t0 E Ew O cco `m c c L d O E I U a7 C j O d L d M y V' O U 0 D Im APPENDIX B GROUNDWATER TREATMENT SYSTEM EFFLUENT MONITORING REPORTS Appendix B is located within the accompanying compact disc. APPENDIX C LABORATORY DATA FOR INDOOR AIR SAMPLES Appendix C is located within the accompanying compact disc. r; APPENDIX D LABORATORY DATA FOR GROUNDWATER SAMPLES Appendix D is located within the accompanying compact disc. APPENDIX E r ' LABORATORY DATA FOR REMEDIATION SYSTEM : INFLUENT AND EFFLUENT SAMPLES r� Appendix E is located within the accompanying compact disc i r UILpINGS R RRI&C. A7 -161V S S1'E 70/71 NORTH K Vq��EY MS gNp�VER, MASSgCHRKS USET7-S 4 HAS r 'NSPAPR O 20 N� MONITp O6 - DEC EMB R 20 SPORT RTN. 3-00174 E 09 l `? October200g