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HomeMy WebLinkAboutMiscellaneous - 306 HILLSIDE ROAD 4/30/2018 306 HILLSIDE ROAD t 210/025.0-0018-0000.0 do i I I 1 I I Town of North Andover AORTk OFFICE OF COMMUNITY DEVELOPMENT AND SERVICES ° . p 27 Charles Street North Andover, Massachusetts 01845 s�ceNaS�t�y WILLIAM J. SCOTT Director (978)688-9531 Fax(978)688-9542 March 24, 2000 Mr. Philip Coppola 306 Hillside Road No. Andover, MA 01845 Re: Sewer Tie-in Dear Mr. Coppola: The Health Department has been supplied with a list of all residences, currently on septic, which have access to the municipal sewer system. As previously published at a Public Hearing on March 17, 1994, the Board of Health has adopted regulations concerning the required sewer tie-in. The following timetable concerning your property status was adopted: 4.1 All establishments that currently do not have municipal sewer available to them must connect to the sewer as soon as it becomes available, with a maximum time limit of six months. The purpose of these regulations is to safeguard North Andover's drinking water, surface waters, groundwater and surrounding environment. Sanitary sewer is believed to be the most effective form of wastewater treatment. A copy of the entire regulation can be obtained at our office. Your property is in violation of this Board of Health regulation. Please contact the Health Department regarding this matter immediately. If we do not hear from you by May 10, 2000 your name will be placed on the regularly scheduled Board of Health meeting agenda and placed on public notice. The meeting will be held on May 25, 2000 for discussion of legal action including court hearings. BOARD OF APPEALS 688-9541 BUILDING 688-9545 CONSERVATION 688-9530 HEALTH 688-9540 PLANNING 688-9535 Sewer Tie-In 306 Hillside Road Page 2 Any questions concerning this regulation should be directed to the Board of Health at (978) 688-9540. Additional inquiries regarding the physical tie-in and permitting process should be directed to the Department of Public Works at (978) 685-0950. Please be advised this Board intends to persevere in this regulation. Yours truly, Gayton Osgood, Chairman Francis P. MacMillan,M.D., Member John S. Rizza, D.M.D., Member SF/smc i 1590 APPLICATION FOR SEWER SERVICE CONNECTION j North Andover, Mass. Application by the undersigned is hereby made to connect with the town sewer main in I` /� Street, subject to the rules and regulations of the Division of Public Works. The premises are known as No. �2 Street or subdivision lot no. Owner Address 12 L9 C Contractor Address Applicant's Signature I?V G 'g� e'->&e vA�ll, r PERMIT TO CONNECT WITH SEWER MAIN i The Division of Public Works hereby grants permission to to make a connection with the sewer main at Street subject to the rules and regulations of the Division of Public Works.. Division of Public Works By Inspected by Date See back for rules and regulations i �of of jpW gOPRD commonwealth of Massachusetts3 o Executive Office of Environmental Affairs f30 ` ®ep�artment ®f Environmental ental Protection William F. Weld Govemor Trudy Coxe Secretory,EOEA David B. Struhs commissioner SUBSURFACE SEWAGE DISPOSAL SYSTEM INSPECTION FORM PART A CERTIFICATION DieProperty Address: 3 0 �' 14 r(- ��9 !? N � m Address of Owner: c2 1 S' (If different) A.) 60 V V- 14 b Date of Inspection: l.Q G i Name of Inspector: t ,Po j A t19SC-000 J� Company Name, Address and Telephone Number: N IvN v�h b )zh h B p�,'rr(, Sff���0 S r44C , pit, Kevt 6vvert CERTIFICATION STATEMENT C° & U h(' I certify that I have personally inspected the sewage disposal system at this address and that the information reported below is true, accurate and complete as of the time of inspection, The inspection was performed based on my training and experience in the proper function and maintenance of on-site sewage disposal systems. The system: r' Passes Conditionally Passes _ Needs Further Evaluation By the Local Approving Authority Fails Inspector's Signature: Date: J D A0`5S/ The Svstern Inspector shall submit a copy of this inspection report to the Approving Authority within thirty (30) days of completing this nspection If the system is a shared systerr, or has a design flow of 10,000 gpd or greater, the inspector and the system o%%ner shall submit the report to the appra^ n �iate ree;onal office of the Depament of Environmental Protection The original shouid t)e seri (c u,f. :�stern o::nc:r anti copie, sen: to tier super, ( <:j:,p! jaitic annd th. app-o" r'g INSPECTION SUMMARY: Check C, or D Aj SYSTEM PASSES: have not found any information which indicates that the system violates any of the failure criteria as defined in 310 CMR 15.303. Any failure criteria not evaluated are indicated below. 81 SYSTEM CONDITIONALLY PASSES: One or more system components need to be replaced or repaired. The system, upon completion of the replacement or repair, _ passes inspection, Indicate yes, no, or not determined (Y, N, or ND). Describe basis of determination in all instances. If"not determined", explain why not) The septic tank is metal, cracked, structurally unsound, shows substantial infiltration or exfiltration, or tank failure is imminent. The system will pass inspection if the existing septic tank is replaced with a conforming septic tank as approved by the Board of Health. (revised B/15/95l One Winter Street • Boston, Massachusetts 02108 • FAX(617) 556 1049 • Telephone (617)292-5600 i C.T Printed on RecyticKi Pape, ,� .. '�--. ' . t A. � e SUBSURFACE SEWAGE DISPOSAL SYSTEM INSPECTION FORM PART A CERTIFICATION (continued) Property Address: Owner: 111 i K 4 C O y n Date of Inspection{ B] SYSTEM CONDITIONALLY PASSES (continued) x is due to _ Sewage backup or breakout or h'gor unevenh static ter distebut dvel istribution The sysin the dtem{bution will pas�inspection broken(wh approval of he pipe(s) or due to a broken, settled Board of Health): broken pipe(s) are replaced obstruction is removed distribution box is levelled or replaced _ The s.ste^i required pumping more than four times a year due to broken or obstructed pipe(s). The system will pass inspectiorl if nvittl approval of the Board of Health): broken pipe(5) are replaced obstruction Is removed C] FURTHER EVALUATION 15 REQUIRED BY THE BOARD OF HEALTH: Conditions e\:ist which reouire further evaluation by the Board of Health in order to determine if the system is failing to protect the public health, s,:fei; and the environment. ES THAT 11 HEAL AND SAFETY AND THETHE SYSTEM IS ENVIRON'MEN7 NOT FUNCTIONING IN A MANNER SYSTEM VVILL PASS UNLESS BOARD Of TH DETERMIN WHICH WILL PROTECT THE PUBLIC HEALTH Cesspo ! or ;:n \ ;< ',Yit`'in 50 feet of a surface water T Cess,oo-, of prep s \,:thin 50 feet of a bordering vegetated wetland or a salt marsh 2) SYSTEM WILL FAIL UNLESS THE BOARD OF HEALTH (AND E PUBLICLIC WATER SHEALTH AND SAFETY AND UPPLIER, IF APPROPRIATE) DEE ERMINES THAT THE SYSTEM 15 FUNCTIONING IN A MANNER THAT PROTECT EN�'IROti,StEtiT: - � ' t ii lliJi�r'p iv a Thr cvSIP hd a S@DUC tanK dnG $Olt absorption system and is -10"11 1E00 feet to d svriace writer supply ha. a se{aur tanl, and sol! absorption system and is within a Zone I of a public water supply`�ell l in eet of The syslem has a septic tank and soil absorption system and is nd soil absorption system and is it th,a501f 00 feetabut 50efeet or more water from a private water f ile ?1`il"'� ''a> d ce(�i�� to is is suppiv , ell, unless a well water anal Bland the cpresoence of ammo and a nt ysis forolifrm itogeile onrand nitrate n gen df equalrganic compounds inatess totorlle setlhan 5 free from pollution front thatfacility pprn. D] SYSTEM FAILS: is I have determined that the system !loaves one The or more of the Health following lshouldingbe ilu tactedr to determiia as ne twhat Owill�be necessary to R 15.303. The ccorrect for this determination is identified the failure. Backup of sewage into facility or system component due to an overloaded or clogged SAS or cesspool. or clogged SAS or Discharge or ponding of effluent to the surface of th6 ground or surface waters clue-too a t ovE;,;,,acled cesspool. Z tiev sed 8/15/95; SUBSURFACE SEWAGE DISPOSAL SYSTEM INSPECTION FORM PART A ' I CERTIFICATION (continued) Property Address: OG 144 LGsio17eo �oveoe, kn4 Owner: frl k x Co IF - Date of Inspections DJ SYSTEM,FAILS (continued): Static liquid level in the distribution box above outlet invert due to an overloaded or clogged SAS or cesspool. Liquid depth in cesspool is less than 6" below invert or available volume is less than 112 day flow. T Required pumping more than 4 times in the last year NOT due to clogged or obstructed pipe(s). Number of times pumped Any portion of the Soil Absorption System, cesspool or privy is below the high groundwater elevation. Any portion of a cesspool or privy is within 100 feet of a surface water supply or tributary to a surface water supply. , Any portion of a cesspool or 11 vy is within a Zone I of a public well. Any portion of a cesspool or privy is within 50 feet of a private water supply well. .Any portion of a cesspool or privy is less than 100 feet but greater than 50 feet from a private water supply well with no acceptable water quality analysis. If the well has been analyzed to be acceptable, attach copy of well water analysis for Coliform bacteria, volatile organic compounds, ammonia nitrogen and nitrate nitrogen. EJ LARGE SYSTEM FAILS: The following criteria apply to large systems in addition to the criteria above: The design iic„', of system is 10,000 gpd or greater (Large System� and the system is a significant threat to public health and safety and the environment because one or more of the following condtions exist: the system is within 400 feet of a surface drinking water supply the system is within 200 feet of a tributary to a surface drinking water supply the system is located in a nitrogen sensitive area (Interim Wellhead Protection Area (IWPA) or a mapped Zone 11 of a pubic \%ater supply well' The owner or operator of any such system shall bring the system and facility into full compliance with the groundwater treatment program requirements of 314 CMR 5.00 and 6.00. Please consult the local regional office of the Department for further information. (revised 8/:5/95) 3 SUBSURFACE SEWAGE DISPOSAL SYSTEM INSPECTION FORM 1 PART B CHECKLIST Property Address: (� 41* L(Si4r Owner: . rio ; (Ce Cvyh V Date of Inspection: Check if the following have been done: r Pumping nformation was requested of the owner, occupant, and Board of Health. None of the system components have been pumped for at least two weeks and the system has been receiving normal flow rates during that period. Large volumes of water have not been introduced into the system recently or as part of this inspection. As built plans have been obtained and examined. Note if they are not available with N/A. The facih*,,v or dwelling was inspected for signs of sewage back-up. v The systern does not receive non-sanitary or industrial waste flow The site was inspected for signs of breakout. All system components, excluding the Soil Absorption System, have been located on the site. 1/The septic tank manholes were uncovered, opened, and the interior of the septic tank was inspected for condition of baffles or tees, material of construction, dimensions, depth of liquid, depth of sludge, depth of scum, V7he size and location of the Soil Absorption System on the site has been determined based on existing information or apprcxirno-ed b,, nof-.-!ntrusne methods _4z'fhe fpiilil, r ;d:1 occ'.,,Pa^;s i' d'ffe'e^' ;'c-' 0 ,. we!e provided with information on the proper maintenance of Sub- Surface Qisoosai System. (revised 8/15/9:' 4 95- �0 SUBSURFACE SEWAGE DISPOSAL SYSTEM INSPECTION FORM PART C SYST>_'M INFORMATION Property Address: 3 o C, Ick J L�-S; C ��' ��Cr JU C1 r 414 Owner: M ;ke COYH 2 Date of inspection: i �a FLOW CONDITIONS RESIDENTIAL: Design flow:. Rallons Number of bedrooms: Number of current residents: p Garbage grinder (yes or no), / Laundry connected to system (yes or no):-Y— Seasonal use (yes or no): 4 Water meter readings, if available: /Zed 40so E 4,s C, Last date of occupancy- `/l/5�r COMMERCIAUINDUSTRIAL: Type of establishment: Design flow: gallons/day Grease trap present: (yes or no)____ Industrial Waste Holding Tank present: (yes or no)-___., Non-sanitary waste discharged to the Title 5 system: (yes or nc) Water meter readings, if available: Last date of occupancy: OT}IER: "Describe) Last date of occupancy._e_____ GENEAL INFORMATION PUMPING RECORDS and source of information; 3 years !,G-0 r,p- oLo-,nese System pumped as pan of inspeclion. (yes or no)�[ If yes, \OIurne p..!r',ppd /t 1-10 p,allons Reason for pumping T-'A5PeC 4 k TYPE OF SYSTEM Septic tankddistribution box,soil absorption system Single cesspool Overflow cesspool Privy Shared system (yes or no) (if yes, attach previous insp,.,ction records, if any) Other (explain) APPROXIMATE AGE of all components, date installed (if know-1 and source of information: k.S o¢ j.- 0.f .-o.r rZ p bv4 /S70 Sewage odors detected when arriving at the site: (yes or no)14) (revised 6/15/95; 5 SUBSURFACE SEWAGE DISPOSAL SYSTEM INSPECTION FORM PART C ,/ SYSTEM INFORMATION (continued) Property Address: 30�o rt L L `�o V`ne, !M g Owner: YYt ' le t_. C 0 y Date of Inspection: SEPTIC TANKi_,,, (locate on site plan) Depth below grade: Material of construction: ✓concrete _,metal _FRP _other(explain) Dimensions: 7 So 644- Tiii,"`k w Sludge depth: Q wtie�su�rC Distance from,top of sludge to bottom of outlet tee or baffle: Co-Cd kvs Scum thickness:--e— t'Yl00,xueir- Distance from top of scum to top of outlet tee or baffle: C out k Distance from bottom of scum to bottom of outlet tee or baffle:�,,tj, t<..4- W%e0 su'r`f-- Comments: (recommendation for pumping, condition of inlet and outlet tees or baffles, depth of liquid level in relation to outlet invert, structural ntegrity, evidence of leakage, etc.) 1&« TA, Crv0+o �'c�hoR�aow Zt Ana �vf +C Tees k'a CeraeQdE•c ►i,, d ti OK 0-1;��Q% S GREASE TRAP (locate on.site plan? Depth below grade Material of construction: _concrete __metal FRP other(explain) Dirnenston� Scum ihiCkne:s. Distance from top of scum to tao of outlet tee or baffle: fro -, hpt1('^" c)t otttla' to«, or bati!e' Cornmert; (recommendation for pumping, conu tion of inlet and outlet tees or baffles, depth of liquidlevel in relation to outlet invert, structural integrity, evidence of leakaee e,c.: re✓ise<i Ai:5!95, 6 i I Y. �a 12e I air SUBSURFACE SEWAGE DISPOSAL SYSTEM INSPECTION FORM PART C SYSTEM INFORMATION (continued) Property Address: . `��' /*r �S' r Cry �U Vag , ni Owner: Y)h Ic e (Toy M rL Date of Inspection: TIGHT OR HOLDING TANK:,_,_ (locate on site plan) Depth below grade: 'Material of construction: „concrete metal _FRP _other(explain) Caoaclty; gallons Design flow- gallons/day, Alarm level: Comments: lcond tion of inlet tee, condmon of alarm and float switches, etc, DISTRIBUTION BOX: _ Joc<ite on site plan: Depth of liquid level ahove outlet men: Con:;ie:ns: ;f le`cl and d'str'.ti'_:' eql:' e'.idence of cnl!d< ca'n'nve, evidence of leakage into or out of box, etc) 1'S '�o �� 6� d AS TryH I( $vx sS Tw �k.Qo2 �AnO.}iGw, So,*, 1syr'beN��L o� �tE'?yoUta' PUMP CHAMBER:— (,locate on site plan; Pumps in working order.(yes or no) Comments: (note condition of pump chamber, condition of pumps and appurtenances, etc,) trz.:sed 0i 15/c. 7 SUBSURFA CE SEWAGE DISPOSAL SYSTEM INSPECTION FORM PART C SYSTEM INFORMATION (continued) re 36 (o l�'��`G$�gB' & � f�p /'p N�Od�P�Cr pyj19- Property Address:s P Owner: rYl ; IC e Cv y en It- Date of Inspection: SOIL ABSORPTION SYSTEM (SAS): r approximated by non intrusive methods) (locate on site plan, if possible; excavation not required, but may be app If not determined to be present, explain: 7YPr leaching pits, number: leaching chambers, number— leaching galleries, number: leaching trenches, number,length:___:___�__ leaching fields, number, dimensions: overflow cesspool, number, cor;ments (note condinon of soil, signs of hydraulic failure, level of ponding, condition of vegetation,etcJ eLp r+ of LAS �- k CESSPOOLS: ilocate on site plan! ,;umber and configuraron. Ge.an•toc of liquid to iniet invert Depth of solids layer. Depth of scum la}er. D mensions of cesspool loaterials of construction np cation of grouniwair- inflow (cesspool must be pumped as part of inspection)_ Comments (note conci non of soil, signs of hydraulic failure, level of ponding, condition of vegetation, et6 PRIVY: 'locate on site plan) Dimensions: Materials of construction: Depth of solids:___ __ Comments: (note condition of soil, signs of hydraulic failure, level of ponding, condition of vegetation, etc.) 8 (revised 8/!5/95) II SUBSURFACE SEWAGE DISPOSAL SYSTEM INSPECTION FORM PART C SYSTEM INFORMATION (continued) Property Address: 3 0 L L S;p u (�H djp t/+Z 12, Owner:, M Date of Inspection: ) / )of6 I � < SKETCH OF.SEWAGE DISPOSAL SYSTEM: include ties to at least two permanent references landmarks or benchmarks locate all wells within 100' fi to p 9� s �J � 1 �Kh��rg N 1 , w DEPTH TO GROUNDWATER Depth to groundwater: feet _ _ method of determination or approximation �(.Z lfOG!T cps &I?rt . (revised 8/15/95) 9 Commonwealth of Massachusetts ! Executive Office of Environmental Affairs Department of Environmental Protection Metro Boston/Northeast Regional Office William F. Weld Governor Trudy S.Coxe Secretary,EOEA Thomas B. Powers Ailing Commissioner � By CERTIFIED MAIL ' January 9, 1995 The Southland Corporation RE: NORTH ANDOVER - 3.618 Hardy cash Road Former Citgo Station Hampton, VA 23666 , Rte. 125 @ Hillside Avenue RTN 3-0400 ATTN: Mr. Gary Blair MGL Chapter 21E & 310 CMR 40. 0000 TIER II CLASSIFICATION EXTENSION FOR SITES WITH EXPIRED WAIVERS; DESIGNATION OF INTERIM DEADLINES Dear Mr. Blair: The Department of Environmental Protection (DEP or Department) is in receipt of your December 5, 19.94 submittal requesting a Tier II Classification Extension. This submittal was made for the subject site which has a DEP Waiver of Approvals that expires on February 5, 1995. As you are aware, the site is now classified as a Tier II site, as described in 310 CMR 40. 0630 (4) of the 1993 Massachusetts Contingency Plan, and is subject to all requirements and fees applicable at Tier II sites. Upon review, the Department has determined that your submittal meets the requirements of 310 CMR 40. 0560 and thus is complete. q P The purpose of this letter is to inform You that, per 310 CMR 40. 0560 (7) (b) , you are authorized to conduct continued response actions at this site. This requested extension is considered effective immediately, and shall not be subject to the sixty (60) day waiting period specified in 310 CMR 40. 0560 (7) (c) . This Tier II classification extension will be in effect for a period of one year beyond the expiration date of the approved Waiver (i.e. , until February 5, 1996) . You should also be aware that, per 310 CMR 40. 0560 (7) (d) , DEP reserves the right to reconsider the need for Department oversight or to initiate enforcement actions upon audit of any response actions at the site or when any timeline for achieving an RAO (Response Action Outcome) pursuant to 310 CMR 40. 0560 is exceeded. 10 Commerce Way • Woburn,Massachusetts 01801 • FAX(617)932-7615 • Telephone(617)932-7600 it The Southland Corporation Page 2 Designation of Interim Deadline In a letter from the Department to the Southland Corporation dated September 22 , 1994 entitled Notice of Audit Findings, the Department outlined it's concerns regarding the migration of contamination from the former Citgo Station property, and stated that additional response actions would be necessary to demonstrate a condition of No Significant Risk at the site. Pursuant to 310 CMR 40. 0167, the Department may establish and enforce reasonable Interim Deadlines consistent with M.G.L. c. 21E and 310 CMR 40. 0000 for the performance of response actions at a disposal site. Therefore, the Southland Corporation is required to submit to the Department a completed Phase II Report prepared in accordance with the requirements of 310 CMR 40. 0830, by no later than July 5, 1995. The Department's decision to establish Interim Deadlines in accordance with 310 CMR 40. 0167 shall not be subject to M.G.L. c. 30A, or. any other law, governing adjudicatory proceedings. ` All further communications regarding this matter should be directed in writing to the letterhead address, attention "BWSC Site Management/Permits Section" , and should reference the Release Tracking Number (RTN) designated in the subject heading. If you have any further questions on this matter, please contact Edward �I Weagle by calling '(617) 932-7600. Very truly your �y 1 7; Al Edward JU Weag1e Stephen M. Johnon Environmental Geologist Chief, Site Management/ Permits Section cc: North Andover Board of Health, Elaine Jonnet, 1 Winter St. , 5th floor, DEP BOSTON Mr. Stephen Lombardi, Fugro East, Inc. , 6 Maple Street, Northborough, MA 01532-1662 DEP NERO Data Entry d Commonwealth of Massachusetts Executive Office of Environmental Affairs Department of Environmental - Protection; Metro Boston/Northeast Regional Office William F. Weld Govemor Trudy S.Coxe FOEA-- Thomas B. Powers - - - Acting Commissioner SEP 2 2 1994 The Southland Corporation 1618 Hardy Cash Road RE: NORTH ANDOVER - Former Citgo Hampton, VA 23666 Service Statior. ATTN: Garry Blair Rte. 125 @ Hillside Avenue RTN 3-0400 NOTICE OF AUDIT FINDINGS Dear Mr. Blair: On August 15, 1994 , the Massachusetts Department of Environmental Protection (the Department) issued a Notice of Audit informing you that the Department was conducting an audit of certain activities related to the above-referenced disposal site pursuant to 310 CMR 40. 1100. That audit is now complete. The purpose of this notice is to explain the results of the audit. The audit included a review of the following: ■ waiver Activities The audit consisted of the following activities: ■ A review of the documents in Department files. ■ A Notice of Audit (NOA) dated August 15, 1994 . ■ A written Request for Information (RFI) dated August 15, 1994 . ■ A review of the documentation provided by your environmental consultant, Fugro-McClelland (East) , Inc. (FME) in response to the Department ' s RFI; including recent groundwater monitoring data, BTEX influent and effluent concentrations, and status reports which justify the termination of the groundwater recovery and treatment system. 10 Commerce Way • Woburn, Massachusetts 01801 • FAX(617)932-7615. • Telephone(617) 932-7600 A Notice of Audit Findings g Page 2 SITE SUMMARY The Phase I investigation reports that six (6) underground -storage-- -tanks (USTs) -- containing - gasoline-- -and--- fuel oil---were-- --- - excavated and removed from the site in April 1985. Approximately 1, 000 cubic yards of petroleum contaminated soil generated by the tank pull activities remained stockpiled on-site until its disposal in 1988. Moderate levels of benzene, toluene, ethylbenzene, and xylenes (BTEX) were detected in groundwater samples collected from the on- site monitoring wells. The maximum total BTEX concentration detected was 7, 600 ug/l in the March 1986 sample taken from monitoring well OW-2 . The depth to groundwater ranges from 5 - 7 feet below grade across the site. Sandy fill was observed to depths of 5 feet below grade, at which point glacial till was encountered. The site was granted a Waiver by the Department on December 20, 1989 . A groundwater treatment/vapor recovery system was subsequently installed and activated in October 1991. The system consists of a recovery well and trench located on the eastern portion of the site intersecting the area of the former pump island. Historically,' elevated levels of BTEX contamination were detected in this area. In November 1992 , five air injection points were installed in conjunction with an air sparging system to further expedite the clean-up of the site. Two additional groundwater monitoring wells, OW-11D and OW-12 , were also installed in December 1992 in an effort to provide further groundwater data pertaining to BTEX concentrations. Both OW-11 and OW-11D are located downgradient of the recovery trench; OW-12 lies upgradient of the recovery trench. AUDIT SUMMARY The Department was notified on June 27 , 1993 by FME that the soil venting/groundwater recovery and treatment system had been deactivated on June 1, 1993 based on " . . .recent and historical laboratory data which indicated that the system had achieved its goals of reducing the BTEX concentrations in the groundwater to levels that do not pose an unacceptable risk to human health, safety, public welfare, and the environment. " Since the Department was not in receipt of any post-May 1992 groundwater data to justify the termination of the system at the site, the NOA/RFI was issued to the Southland Corporation. The information requested in the NOA/RFI was tsubmitted to the f Notice of Audit Findings Page 3 Department within the two week Interim Deadline set by the Department. The groundwater monitoring results from March 1991 through December 1993 indicate that BTEX levels have decreased to method _detection.-.-limits-- _1 u 1 for- BTEX components)( g/ p ) --in--a1-1---------- groundwater monitoring wells except OW-11, OW-11D, and OW-12 . The total BTEX concentrations detected in groundwater samples collected from these wells during the December 1993 sampling round were 1, 429 ug/l, 3 , 300 ug/1, and 223 ug/1, respectively. The results of a Hydropunch Survey conducted at the site on July 20, 1994 were also submitted to the Department in response to the NOA/RFI . The survey involved the installation of five groundwater sampling points (HP - 1, 2 , 3 , 4 , and 5) along Route 125 beyond the underground water and sewer lines which run parallel to the eastern property line. Elevated BTEX levels were detected in HP-3 and HP-4 (total BTEX 2 , 353 ug/l and 13 , 390 ug/l, respectively) . HP-3 and HP-4 lie hydrologically downgradient of monitoring wells OW-11 and OW-11D. Due to this fact, the Department disagrees with FME's statement that monitoring wells OW- 11 and OW-11D simply represent localized "hot spots" at the site. The system was re-activated at the site on April 21 and May 6, 1994 for the performance of two pump tests on monitoring wells OW- 11 and OW-11D. The purpose of these tests was to meet the National Pollutant Discharge Elimination System (NPDES) permit requirements for the site. The results indicated the total BTEX system influents to be 217 ug/l (with 210 ug/l as benzene) and 74 ug/l (with 69 ug/l as benzene) , respectively. AUDIT FINDINGS No deficiencies or violations were identified during the audit. On the basis of the information reviewed during the audit, and in reliance upon the accuracy of that information, the Department believes that the current groundwater recovery and treatment system would not be effective in further reduction of the on-site contaminant concentrations. ADDITIONAL COMMENTS The following section contains the Department ' s observations and recommendations pertaining to the current site conditions. These observations and recommendations do not constitute deficiencies or violations. Instead, they represent shortcomings in meeting general performance standards under Chapter 21E and the Massachusetts Contingency Plan (MCP) and are included to assist you and your environmental consultant in completing the Phase II r' Notice of Audit Findings Page 4 i investigation and determining the appropriate response actions to address the remaining on-site contamination. The historical groundwater data submitted to the Department indicates that the groundwater recovery and treatment system has been relatively ineffective in lowering BTEX levels in the area downgradient of the recovery trench. Consequently, the Department has identified the following concerns which should be evaluated and addressed in accordance with 310 CMR 40. 000 and/or 310 CMR 40. 0000 during the Phase II site investigation and prior to submitting a Remedial Response Completion Statement or Response Action Outcome (RAO) for the site: Elevated BTEX concentrations still remain in recent groundwater samples collected from downgradient monitoring wells OW-11 and OW-11D; and from Hydropunch monitoring points HP-3 and HP-4 . Additionally, the GW-2 standard for xylenes (6, 000 ug/1) was exceeded at HP-4 (7 , 970 ug/1) . This indicates that the gasoline plume has migrated beyond the recovery trench toward Route 125. This situation poses a potential vapor threat to the residences located on the opposite side of Route 125, as well as to the underground water and sewer lines which lie beneath Route 125. Therefore, the .Department disagrees with FME' s June 27th conclusion that an unacceptable risk to human health, safety, public welfare, or the environment no longer exists at the site. Pursuant to 310 CMR 40. 545 (g) , (h) , and (i) , a demonstration of No Significant Risk is required relative to the potentials for volatilization of BTEX vapors into the residences, and infiltration to the underground utility lines. Accordingly, the extent of the gasoline plume must be defined in order to fully characterize the potential risks at the site. Additional investigations may include, but are not limited to, the proposed installation of additional Hydropunch groundwater monitoring points as noted in the August 26, 1994 FME response to the Department ' s NOA/RFI. If the investigations and response actions conducted at the site cannot reach a condition of No Significant Risk prior to the expiration of the Waiver on December 20, 1994 , then the site must be evaluated and addressed pursuant to the revised Massachusetts Contingency Plan 310 CMR 40. 0000, effective October 1, 1993 . CONCLUSION These findings do not apply to response actions or other aspects of the site that were not reviewed in the audit. The audit focused primarily on compliance with certain requirements of M.G.L. c. 21E and the MCP and, to a limited extent, on other applicable i I i i Notice of Audit Findings Page 5 i requirements. This audit does not preclude future audits of past, current, or future response actions or activities at the site or inspections to confirm compliance with applicable requirements of other laws or regulations enforced by the Department. These findings do not 'in any way constitute a release from liability under M.G.L. c. 21E, the MCP, or any other law, regulation, or requirement. No portion of this Notice shall be construed to relieve any person from an obligation for Response j Action Costs or damages related to a site or disposal site for which that person is liable under M.G.L. c. 21E or from any obligation for any administrative, civil or criminal penalty, fine, settlement, or other damages. No portion of this Notice shall be construed to limit the Department' s authority to take or arrange, or to require any Responsible Party or Potentially Responsible Party to perform, any response action authorized by M.G.L. c. 21E which the Department deems necessary to protect health, safety, public welfare or the environment. If you have any questions regarding this notice or any requirements contained in it, please contact Nancy Fitzpatrick or John Duggan at 617-932-7600. Please reference the Release Tracking Number identified in the subject heading . in any future correspondence, regarding the site. Very truly yours, Nancy A. Fitzpatrick Env' onmental Analyst Patricia M. Donahue Chief, Compliance/Risk Reduction Bureau of Waste Site Cleanup cc: Stephen Lombardi, Fugro-McClelland (East) , Inc. , 6 Maple Street, P.O. Box 1130, Northborough, MA 01532 DEP/BWSC/Woburn, Data Entry/Files DEP/BWSC/Boston, c/o Larissa Drennan DEP/Boston, Steve Winslow North Andover Board of Health Mr. John Favafstano, Chairman, Board of Selectmen, Town Building, North Andover, MA 01845