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2019-07-16 Stormwater Review
I 9 6/4/2019 Town of North Andover Mail-630 Turnpike Street NOR 0 AN'60VER hAassachus��ls Monica Gregoire<mgregoire@northandoverma.gov> E 630 Turnpike Street i Janet Bernardo <jbernardo@horsleywitten.com> Tue, Jun 4, 2019 at 10:24 AM To: Monica Gregoire <mgregoire@northandoverma.gov> Cc: Jean Enright<jenright@northandoverma.gov>, Jennifer Hughes <jhughes@northandoverma.gov>, Benjamin Curell <bcurell@northandoverma.gov> i Hi Monica, The Applicant has accepted our recommendations for increasing the size of the system. I am comfortable with the design at this time. Do you need anything more formal from me or is this email sufficient? Thanks, Janet Janet Carter Bernardo, P.E. Horsley Witten Group Office: 857-263-8193 Direct: 774-413-2999 x 202 [Quoted text hidden] All email messages and attached content sent from and to this email account are public records unless qualified as an exemption under the Massachusetts Public Records Law. Visit us online at www,northandaverma.gov. https:l/mai l.googl e.com/mail/u/0?ik=dadd 1872e7&view=pt&search=all&permmsgid=m sg-f°/o3A1635420242746660616&slmpl=msg-f°/o3A16354202427... 111 i i i I Horsley Witten Group Sustainable Environmental Solutions 294 Washlogion Street•Suite 801•Boston,MA 02108 857-283-SM•horaley vitten.com r� .. June 3, 2019 Ms. Monica Gregoire, Staff Planner Planning Department i Town of North Andover 120 Main Street North Andover, Massachusetts 01845 Ref: Stormwater Peer Review Proposed Expansion 630 Turnpike Street, North Andover, MA 01845 Dear Ms. Gregoire and Board Members: The Horsley Witten Group, Inc. (HW) is pleased to provide the North Andover Planning Board with this letter report summarizing our review of the Drainage Mitigation calculations and Site Plan for the proposed building expansion of an elevator and access lobby at 630 Turnpike Street in North Andover, MA. The stormwater calculations and site plan were prepared by Merrimack Engineering Services for Blue Cod Holdings, LLC (Applicant). HW understands that the Applicant is proposing to expand the existing 7,539 square foot (sf) building with an elevator room and access lobby by 295 sf. There is a wetland on the southeastern portion of the parcel, however it appears that the proposed work will be outside the 100-foot buffer zone. The following documents and plans were reviewed by HW: • Letter to Ms. Jean Enright, regarding 630 Turnpike Street, North Andover, MA, Application for Special Permit and Site Plan Review, prepared by Blue Cod Holdings, LLC, dated April 29, 2019 (4 pages); • Drainage Mitigation calculations for Blue Cod Holdings, 630 Turnpike St, No. Andover, MA, prepared by Merrimack Engineering Services, dated April 15, 2019 (5 pages); and • Site Plan #630 Turnpike Street Land in North Andover, Massachusetts, prepared for and entitled Blue Cod Holdings LLC, prepared by Merrimack Engineering Services, dated February 20, 2019 (1 sheet). Stormwater Management Design Peer Review HW offers the following comments concerning the drainage mitigation calculations and the sizing of the cultic chambers as directed in an email dated May 30, 2019 from Michael Dorrington, which stated: The Town Engineer, John Borgesi, has your application submission and provided the following comment: Looking at this quickly I do think a peer review should be performed just to check the infiltration calculations/Cultec chamber sizing calculations submitted. HorsleyWitten,coin Cc)HorsleyWitfenGroup Horsley Wiffen Group, Inc:. Town of North Andover June 3, 2019 Page 2 of 3 HW agrees with the following components of the mitigation calculations: 1. Area of proposed building = 295 sf 2. Area of proposed walkway-existing walkway to be removed = 580 sf-70 sf= 510 sf 3. Hydrologic Soil Group (HSG) per Natural Resources Conservation Services (NRCS) are CID, therefore the soil has a slow infiltration rate. 4. Precipitation for a 100-year 24-hour rainfall event for North Andover is 6.4 inches. 5. Area of the existing building is 2,513 sf. Therefore, a quarter of the existing building = 628.25 sf. 6. It is reasonable to capture one corner of the building to mitigate for the proposed elevator and lobby area. 7. A Cultec Recharger 180HD chamber can store 25.2 cf/unit, two chamber= 50.4 cf. 8. Storage provided with 6 inches of stone below and 2 feet on sides assuming 30% voids plus two chambers = 121.88 cubic feet (cf). 9. With the bottom of the system at elevation 248.74 it will probably have two feet of separation from the estimated seasonal high ground water (ESHGW)table based on the wetland elevation. HW disagrees with the following components of the mitigation calculations: 10. Curve number(CN)for an impervious area (building and walkway) is 98. The Applicant utilized 95 and adjusted the depth of precipitation per Table B-9. Table B-9 does not include a CN values higher than 90. Interpolation is not realistic for CNs greater than 90. 11. Applicant has utilized an infiltration rate of 3 inches/hour. Soils listed as HSG CID have an infiltration rate of 0.17 inches/hour, per the Massachusetts Stormwater Handbook (MSH)Volume 3, Chapter 1, Page 22. 12. It is HW's opinion that the required volume that should be captured is 510 sf x 6.4 inches112 in/foot = 272 cf. 13. The infiltration rate is minimal and should not be included in the provided storage, unless a permeability test is conducted at the site. 14. In accordance with the manufacturer a Cultec Recharger 18OHD chamber requires 6 inches of stone above the chamber, which would provide an additional 19.6 of of storage for the proposed layout. If include 6 inches of stone above the chambers the design would provide 121.88 cf+ 19.6 cf= 141.48 cf. HW has the following recommendations: 15. Provide additional 6 inches of stone above the chamber. 16. Double the size of the chambers, 4 chambers with 6 inches of stone above and below and 2 feet of stone on all four sides will provide 282.96 cf of storage which is greater than the required 272 cf. Ii'A1rny'(ts11U1M 18065 N Andovt'.r On-CWH 8065G G30'Nrnpike SIT ee-Meptx[sMO603_I sf f'eei Review 630 Turnpike St.docx i j Town of North Andover June 3, 2019 Page 3 of 3 17. Alternatively, the Applicant may conduct a deep test hole and perform a permeability test to determine the actual infiltration rate in the location of the proposed system and provide revised calculations for review. N 18. At the time of construction excavate a deep test hole to verify that the ESHGW is below elevation 246.74. The results should be provided to the Building Inspector and Planning Board, 19. Provide a bong-Term Operation & Maintenance Plan signed by the property owner for 3 future inspections and maintenance of the subsurface system and provide to the Building Inspector and Planning Board. Conclusions HW recommends that the Planning Board require the Applicant to address these comments as part of the Board's review process. The Applicant is advised that provision of these comments does not relieve him/her of the responsibility to comply with all Town of North Andover Codes and By-Laws, Commonwealth of Massachusetts laws, and federal regulations as applicable to this project. Please contact Janet Bernardo at 774-413-2999 ext 202 or at jernardo@horsleywitten.com if you have any questions regarding these comments. Sincerely, HORSLEY WITTEN GROUP, INC. Janet Carter Bernardo, P.E. Senior Project Manager I i 1 i I I I;11'I(1i("d"XMI8\IW('i)N l ndov(,,i On U'dh 180W)0,630 1 1pikes 190(103 fst I'wii Ir eviriw 630 I urmike, it,iiry X, i I 6/4/2019 Town of North Andover Mail-630 Turnpike St, North Andover-Special Permit-Site plan Review NoltT.1t AN'r),OVE R Monica Gregoire <mgregoire@northandoverma.gov> i 7. 630 Turnpike St, North Andover -.Special Permit - Site Plan Review 1 message _. ....._.... . Michael Dorrington <mdorrington@bluecodhoidings.com> Tue, Jun 4, 2019 at 9:40 AM To: Monica Gregoire <mgregoire@northandoverma.gov> Monica, Please find attached letter to you accepting consultants stormwater recommendations along with a signed operation and maintenance ptan for the CULTIC system. Regards, Mike Blue Cod UC Kchael A,Dorrington Chief Executive Officer T:978-930-6662 E:mdorring(on@hluecoclP�oldings.co# This message and Its contents are confidential. If you have received It by mistake, please inform us by an email reply and then delete the message. IMG_20190604 0001.pdf 4448K https,flmall.google.cornlmail/u/0?ik=daddl872e7&view=pt&search=all&perrnthid=thread-f%3A1635417522281249947&simpl=msg-f*/u3A1 6354 1 752 22... 1/1 ................ JOB 13 u L)G 6!2)o 42\-ou 0 1 o 6 1, MERRIMACK ENGINEERING SERVICES SHEETNO. - OF Peofessional Eggincers. # Land Surveyors a Planners 66 Park Street CALCULATED B Y DATI A-1 ANDOVER, MASSACHUSETTS 01810 (508) 475.3555 CHECKED BY DATE SCALE A t.d J k_1 ...... 6S),.IH b_'.01 LJI T I -rd T. L4 0 or ITT.. AAp-e _1L. 14i U j"CL�.V= -7J eq 1---lv x. PL6 JU, U V14 W_ tl .......... J le tz iu.AOUL Nl___ ed 4 +A1 LA 14 e. . ........ 1 1. A. Clio, Vi k Viet !��j 4 V 4 i\A OF 4-1 Lc b W q Nr2mcHENOK, A-A -Aud o"iL, A. tA V_ 3 A"Nk V JOB- MERRIMACK ENGINEERING SERVICES SHEET NO. OF Peofessloinal Engineers # Land Surveyors * Planners CALCULATED 13, 11TElkrt i!7 66 Park Street ANDOVER I MASSACHUSETTS 01810 GHE"ED BY DATE (508) 475-3555 SCALE r akwr _c; +( i A2_ �T (J 41! �14 lw�I u 1 1 .7T r e� L L. V1 Au I.- i AA 5; e', z 60 44 -(A v -Aid 1A �2 _T -F e oe e13 114- A N_j a A-1 41-- T_ L I AA C P t _h. J_ a qu Qf�lt-jjo_ tuir Iro ........ ........... 4 — .............. e A., ---------- ll - cv to 5 v j ZjtJ c V4 h 4(7— -,4 �aA I'A I,--- F Vj&VFA Tv I 4-- L vi\A mwrwi f�a vow)w PAO,*6W.im.ww,,LUMMI.Ttwptm ratite 14MM'" JOB Cmb 1p1 t��S MERRIMACK ENGINEERING SERVICES SHEErNO. or Ptofessional Engineers • Land Surveyors • Planners 66 Park Street CALCULATED DATE ANDOVER, MASSACHUSETI'S 01810 (508) 475.3555 CNECKEOnY GATE SCALE I ppt u ' i _ i s w�..__� •iQ e Du �� �U% -I.w'�1 ; �'Yt ti a 4 f I 'tul��? t1L - ! •, � � UrJ It IUf� i�'Ji+lo r N�� �S� _. l+^!. �Q �l�C!"rUSL� CvL'�rS�f� A L { 1 i Cry! �c5►"-Idr�►�u j.hPybcl+(� >91r I _, 1 V _ E ! y, : : i 1 --- -..._ : P I E ' E I 1 I � r I ! I I I .I._.. _. : E ; I j i RIOWCT201-I(SNpYSMRs)2dSl )®eb�,6rvb44rixQAT1.700* WNET9UfMIZG-U$�W i 5.8" ,. 5.6 5.711 ESSEX FRANKLIN 6. 0 II MIDDLESEX SUFFOLK 11 $ HAMPSHIRE WORCESTEfl / 6 I Y W HAMPDEN N4�4oL 6.311 {� �G NO RAINFALL DATA MAP BARN57ABL 6.4' 50-YEAR,24 HOUR PRECIPITATION (INCHES) v 6.511 OUK NANTUCKET TP-40 V.G" 6.411 ESSEX FRANKLIN 1 6.611 ORCESTER MIDDLESEX SUFFOLK $ HAMPSHIRE 6.811 ca PF OV HAMPUEN 'y it .7 O f RAINFALL DATA MAP BARNS A8L 7.2't 100-YEAR,24-HO U.R PRECIPITATION (INCHES) d DUK t 0 NANTUCKET TP--40 FIGURE B-I ,SHEET 3 OF 3 ) B-24 _ Fes, i Table B-9 Runoff depth in inches i i Rainfall ¢ (inches) Curve Number (CW 6o 65 70 75 8o 85 e� ga 1.0 0 0 0 0.03 o.o8 0.17 0.32 1 1.2 0 0 0.03 0.07 0.15 0.28 o.46 1.4 o 0.02 o.o6 0.13 0.24 0.39 o.61 1.6 0.01 0.05 0.11 0.20 0.34 0.52 o.76 1.8 _0.03 0.09 0.17 0.29 0.44 o.65 0.93 2.0 m6 o.•14 0.24 0.38 o.56 o.8o 1.09 2.5 0.17 0.30 o.46 M. o.89 1.18 1.53 3.0 0.33 0.51 0.72 `'o.96 1.25 1.59 1.98 4.o 0.76 1.05 1.33 1.67 2.o4 2 .46 2.92 5.0 1,30 1..�5 2.o4 2.45 2.89 3.37 3.8.8 6.0 1.92 2.3 2.80, 3.28 3.78 4.31. 7.0 2:60 1..3.1 1" 3.62 4.15 „ 4.69 5.26, 5.82 r 8.0 3.33 3 '90 4;47 5.o4' 5.62 6.22 6.81 9.0 4.10 4.72 5.34 5.95 6.57 7.19 7.79 10.0 4.90 5.57 6.23 6.88 7.52 8.16 8.78 11.0 5.72 6.44 7.13 7.82 8.48 9.14 9.77 12.0 6.56 7.32 8.05 8.76 9.45 10.12 10.76 To obtain runoff depths for CN's' and other rainfall amounts not shown in this table, use an arithmetic interpolation. 1 B25 I I Mm e �MM i d III mom a. �, .1 ..�f'r'�1`•• � vriyi ti )�ivda:`�.,, � ti" -•„u �y / f�-tr"�' nAry�Y .� J ,�y,,,;, ,,`?'�N.`�i' ?f•T�'y� �'� x �y"' M2 i Blue Cod HOLDINGS,UC 5 Oscars Way North Reading,Massachusetts 01864 (978)930-6662 mdorrington@bluccodholdings.com June 4, 2019 Ms. Monica Gregoire Staff Planner Town of North Andover Town Hall 120 Main Street North Andover, MA 01845 Re: 630 Turnpike Street, North Andover, MA Application for Special Permit and Site Plan Review Dear Ms. Gregoire: Thank you for forwarding Horsley Witten Croup's Stormwater Peer Review dated June 3,2019 in connection with the above-referenced property. I accept their recommendations to: • Provide additional 6 inches of stone above the chamber; • Double the size of the chambers,4 chambers with 6 inches of stone above and below and 2 feet of stone on all four sides will provide 282.96 cf of storage which is greater than the required 272 cf; • At the time of construction excavate a deep test hole to verify that the ESHGW is below elevation 246.74.The results should be provided to the Building Inspector and Planning Board; and • Provide a Long-Term Operation&Maintenance Plan signed by the property owner for future inspections and maintenance of the subsurface system and provide to the Building Inspector and Planning Board. I enclosed a signed Operation and Maintenance Plan. This plan is designed and recommended by the manufacturer for its systems. Please contact me should you have any questions regarding the plan or anything else contained in this letter. Sincerely yours, Michael A. Dorrington Chief Executive Officer and Manager Enclosures i Operations andMaintenance Guidelines LTEC i 7 1 Published by CULTIC, Inc. P.O. Box 280 878 Federal Road Brookfield, Connecticut 06804 USA www.cultec.com Copyright Notice CO 2017 CULTEC, Inc. All rights reserved. Printed in the USA. This document and any accompanying CULTEC products are copyrighted by CULTEC, Inc. Any reproduc- tion and/or distribution without prior written consent from CULTEC, Inc, is strictly prohibited. Disclaimers: The drawings, photographs and illustrations shown in this document are for illustrative purposes only and are not necessarily to scale. Actual designs may vary. CULTEC reserves the right to make design and/or specification changes at any time without notice at CULTEC's sole discretion. CULTEC is not responsible for typographical errors. Protected by one or more of the following patents: Protected by one or more of the following patents: U.S. Patents 6,129,482; 6,322,288; 6,854,925; 7,226,241; 7,806,627; 8,366,346; 8,425,148; and oth- ers; U.S. Designs D613819; D638,095; D668,318 and others; Canadian Patent 2,591,255 and others; Community Designs 1092191; 1745209; and others. CULTEC, the CULTEC logo, RECHARGER, CONTACTOR, HVLV, PAC, STORMFILTER, STORMGENIE and The Chamber with The Stripe are registered trademarks of CULTEC, Inc. Chamber of Choice, 902, HD, 100, 125, 150, 150XL, 180, 280, 330, 330XL, V8, 902, Field Drain Panel, C-1, C-2, C-3, C-4, EZ-24, Landscape Series are trademarks of CULTEC, Inc. All rights reserved. Contact Information: For general information on our other products and services, please contact our offices within the United States at (800)428-5832, (203)775-4416 ext. 202, or e-mail us at custservice@cultec.com. i For technical support, please call (203)775-4416 ext. 203 or e-mail tech@cultec.com. Visit www.cultec.com/downloads.html for Product Downloads and CAD details. i Doc ID; CULG008 05-17 May 2017 These instructions are for single-layer traffic applications only. For multi-layer applications, contact CULTEC. All illustrations and photos shown herein are examples of typical situations. Be sure to follow the engineer's drawings. Actual designs may vary. 2 For more Information, contact CULTEC at(203) 775-4416 or visit www.cultec.com. i CULTEC Stormwater Chainbers This manual contains guidelines recommended by CULTEC,Inc. and may be used in conjunction with, but not to supersede, local regulations or regulatory authorities. OSHA Guidelines must be followed when inspecting or cleaning any structure. Introduction The CULTEC Subsurface Stormwater Management System is a high-density polyethylene (HDPE) chamber system arranged in parallel rows surrounded by washed stone. The CULTEC chambers create arch-shaped voids within the washed stone to provide stormwater detention, retention, infiltration, and reclamation. Filter fabric is placed between the native soil and stone interface to prevent the intrusion of fines into the system. In order to minimize the amount of sediment which may enter the CULTEC system, a sediment collection device (stormwater pretreat- ment device) is recommended upstream from the CULTEC chamber system. Examples of pretreatment devices include, but are not limited to, an appropriately sized catch basin with sump, pretreatment catchment device, oil grit separator, or baffled distribution box. Manufactured pretreatment devices may also be used in accordance with CULTEC chambers. Installation, operation, and maintenance of these devices shall be in accordance with manufacturer's recommendations. Almost all of the sediment entering the stormwater management system will be collected within the pretreatment device. Best Management Practices allow for the maintenance of the preliminary collection systems prior to feeding the CULTEC chambers. The pretreatment structures shall be inspected for any debris that will restrict inlet flow rates. Outfall structures, if any, such as outlet control must also be Inspected for any obstructions that would restrict outlet flow rates. OSHA Guidelines must be followed when inspecting or cleaning any structure. Operation and Maintenance Requirements I. Operation CULTEC stormwater management systems shall be operated to receive only stormwater run-off in accordance with applicable local regulations. CULTEC subsurface stormwater management chambers operate at peak performance when installed in series with pretreatment. Pretreatment of suspended solids is superior to treatment of solids once they have been introduced into the system. The use of pretreatment is adequate as long as the structure is maintained and the site remains stable with finished impervious surfaces such as parking lots, walkways, and pervious areas are properly maintained. If there is to be an unstable condition, such as improvements to buildings or parking areas, all proper silt control measures shall be implemented according to local regulations. II, Inspection and Maintenance Options A. The CULTEC system may be equipped with an inspection port located on the inlet row. The Inspection port Is a circular cast box placed in a rectangular concrete collar. When the lid is removed, a 6-inch (150 mm) pipe with a screw-in plug will be exposed. Remove the plug. This will provide access to the CULTEC Chamber row below. From the surface, through this access, the sediment may be measured at this location. A stadia rod may be used to measure the depth of sediment if any in this row. if the depth of sediment Is in excess of 3 inches (76 mm), then this row should be cleaned with high pressure water through a culvert cleaning nozzle. This would be carried out through an upstream manhole or through the CULTEC StormFilter Unit (or other pre- treatment device). CCTV inspection of this row can be deployed through this access port to deter mine if any sediment has accumulated in the inlet row. B. If the CULTEC bed is not equipped with an inspection port, then access to the inlet row will be through an upstream manhole or the CULTEC StormFilter. 1. Manhole Access This Inspection should only be carried out by persons trained in confined space entry and sewer inspection services. After the manhole cover has been removed a gas detector must be lowered into the manhole to ensure that there are not high concentrations of toxic gases present. The Inspector should be lowered Into the manhole with the proper safety equipment as per OSHA requirements. The inspector may be able to observe sediment from this location. If this is not possible, the inspector will need to deploy a CCTV robot to permit viewing of the sediment. For more information, contact CULTEC at(203) 775-4416 or visit www.cultec.com. 3 Operations and Maintenance Guidelines TEr E i i I 2. 5tormFiiter Access Remove the manhole cover to allow access to the unit. Typically a 30-inch (750 mm) pipe is used as a riser from the StormFllter to the surface, As in the case with manhole access, this access point requires a technician trained in confined space entry with proper gas detection equipment. This individual must be equipped with the proper safety equipment for entry into the StormFllter. The technician will be lowered onto the StormFilter unit. The hatch on the unit mast be removed, Inside the unit are two filters which may be removed according to StormFilter maintenance guidelines. Once these filters are removed the Inspector can enter the StormFlter unit to launch the CCTV camera robot. E i C. The Inlet row of the CULTIC system is placed on a polyethylene liner to prevent scouring of the ' washed stone beneath this row. This also facilitates the flushing of this row with high pressure water through a culvert cleaning nozzle. The nozzle is deployed through a manhole or the StormFllter and extended to the end of the row, The water is turned on and the inlet row Is back-flushed into the manhole or StormFilter. This water is to be removed from the manhole or StormFilter using a vacuum truck. III. Maintenance Guidelines The following guidelines shall be adhered to for the operation and maintenance of the CULTEC stormwater management system; A. The owner shall keep a maintenance log which shall include details of any events which would have an effect on the system's operational capacity. B. The operation and maintenance procedure shall be reviewed periodically and changed to meet site conditions. C. Maintenance of the stormwater management system shall be performed by qualified workers and shall follow applicable occupational health and safety requirements. D. Debris removed from the stormwater management system shall be disposed of in accordance with applicable laws and regulations. IV. Suggested Maintenance Schedules A. Minor Maintenance The following suggested schedule shall be followed for routine maintenance during the regular operation of the stormwater system., Monthly in first year Check inlets and outlets For clogging and remove any debris, as required. Spring and Fall Check inlets and outlets for clogging and remove any debris, as required. One year after commissioning and every third Check inlets and outlets for clogging and remove any debris, as required. year following B. Major Maintenance The following suggested maintenance schedule shall be followed to maintain the performance of the CULTEC stormwater management chambers. Additional work may be necessary due to insufficient performance and other Issues that might be found during the Inspection of the stormwater management chambers. (See table on next page) 4 For more information,contact CULTEC at (203) 775-4416 or visit www.cultec.com. StormwaterCULTEC r Inlets and Outlets Every 3 years 0 Obtain documentation that the inlets, outlets and vents have been cleaned and will function as intended. Spring and Fail Check Inlet and outlets for clogging and remove any debris as re- quired. CULTEC Stormwater 2 years after commis- • Inspect the interior of the stormwater management chambers Chambers s€oning through Inspection port for deticiencies using CCTV or comparable technique, • Obtain documentation that the stormwater management chambers and feed connectors will function as anticipated. 9 years after commis- • Clean stormwater management chambers and feed connectors of sioning every 9 years any debris. following • Inspect the Interior of the stormwater management structures for deficiencies using CCN or comparable technique, • Obtain documentation that the stormwater management chambers and feed connectors have been cleaned and will function as intend- ed, 45 years after com•- Clean stormwater management chambers and feed connectors of missioning any debris. Determine the remaining life expectancy of the stormwater man- agement chambers and recommended schedule and actions to reha- bil€take the stormwater management chambers as required. • Inspect the interior of the stormwater management chambers for deficiencies using CCTV or comparable technique. • Replace or restore the stormwater management chambers in accor- dance with the schedule determined at the 45-year inspection. Attain the appropriate approvals as required. • Establish a new operation and maintenance schedule. Surrounding Site Monthly in istyear 0 Check for depressions in areas over and surrounding the stormwater management system. Spring and Fall • Check for depressions in areas over and surrounding the stormwater management system. Yearly 0 Confirm that no unauthorized modifications have been performed to the site. For additional information concerning the maintenance of CULTEC Subsurface Stormwater Management Chambers, please con- tact CULTEC, Inc. at 1-800-428-5832. For more information, contact CULTEC at (203) 775-4416 or visit www.cultec.com. 5 i Operations r Maintenance LTEC i WQ MP Operation & Maintenance (O&M ) Plan Project Name: 630 Turnpike St. i Prepared for: Project Name. Blue Cod Holdings, LLC Address: 5 Oscars Way City, State Zip: North Reading, MA 01864 Prepared on: Date:June 4, by Michael Dorrington, Its Manager 6 For more information,contact CULTEC at(203) 775-4416 or visit www.cultec.com. Chambers CUL This O&M Plan describes the designated responsible party for implementation of this WQMP, including: operation and maintenance of all the structural BMP(s), conducting the training/educational program and duties, and any other necessary activities, The O&M Plan includes detailed inspection and maintenance requirements for all struc- tural BMPs, including copies of any maintenance: contract agreements, manufacturer's maintenance requirements, permits, etc. 8.1.1 Project Information Project name 630 Turnpike St, Address 630 Turnpike St. City, State Zip North Andover, MA Site size List of structural BMPs, number of each Other notes 8.1.2 Responsible Party The responsible party for implementation of this WQMP is: Name of Person or HOA Property Manager Michael Dorrington Address 5 Oscars Way City, State zip North Reading, MA 01864 Phone number 978-930-6662 24-Hour Emergency Contact number same as above Email mdorrington@bluecodholdings.com 8.1.3 Record Keeping Parties responsible for the O&M plan shall retain records for at least 5 years. All training and educationai activities and BMP operation and maintenance shall be documented to verify compli- ance with this O&M Plan. A sample Training Log and Inspection and Maintenance Log are Included in this docu- ment. 8.1.4 Electronic Data Submittal This document along with the Site Plan and Attachments shall be provided in PDF format. AutoCAD flies and/or GIS coordinates of BMPs shall also be submitted to the City. For more information, contact CULT6C at(203) 776-4416 or visit www.cultec.com. 7 3 3 Operations / Maintenance Guidelines 1 LTEC EIi I Appendix BMP SITE PLAN Site plan is preferred on minimum 11" by 17 colored sheets, as long as legible, i 8 For more Information, contact CULTEC at(203) 775-4416 or visit www.cultec.com. BMP OPERATION & MAINTENANCE LOG Project Dame: 630 Turnpike St, Today's Date: Name of Person Performing Activity (Printed): Signature: r . ps, • : . , For more information, contact CULTIC at(203) 775-4416 or visit www.cultec.com. 9 V 1 I Operations CTFC Minor Maintenance Monthly in first year Check inlets and outlets for clogging and remove any debris, as required. Notes t3 Month 1 Date: ❑ Month 2 Date: ❑ Month 3 Date: i ❑ Month 4 Date ❑Month 5 Date: ❑ Month 6 Date: • Month 7 Date; ❑ Month 8 Date: ❑ Month 9 Date: a Month 10 Date: ❑ Month 11 Date: ❑ Month 12 Date: Spring and Fall Check inlets and outlets for clogging and remove any debris, as required. Notes ❑Spring Date: ❑ Fall Date: n Spring Date: ❑ Fail Date: ❑Spring Date: ❑ Fall Date: ❑Spring Date: ❑ Fall Date; ❑Spring Date: ❑Fall Date: ❑Spring hate: ❑ Fall Date: One year after commissioning Check inlets and outlets for clogging and remove any debris, as required. and every third year following Notes ❑Year 1 Date: ❑Year 4 Date: ❑Year 7 Date: ©Year 10 Date; ❑Year 13 Date: •Year 16 Date: ❑Year 19 Date: ❑Year 22 Date: 10 For more information, contact CULTEC at(203) 775-4416 or visit www.cultec.com. Major Maintenance Every 3 years obtain documentation that the inlets, outlets and vents have been cleaned and will function as intended. Notes ❑Year 1 Date: o Year 4 Date: ❑Year 7 Date: ❑Year 10 Date: ❑Year 13 Date: ❑Year 16 Date: N y ❑Year 19 Date: 4' n Year 22 Date: a 0 .a Spring and Fall Check inlet and outlets for clogging and remove any debris, as required. tC Notes Q� c n Spring Date: N ❑ Fall Date: ❑Spring Date: ❑Fall Date: ❑Spring Date: ❑ Fall Date: ❑Spring Date: ❑Fall Date: a Spring Date: ❑Fall Date: ❑Spring Date: n Fall Date: 2 years after commissioning n Inspect the Interior of the stormwater management chambers through inspection port for deficiencies using CCTV or comparable technique. M n Obtain documentation that the stormwater manage- ment chambers and feed connectors will function as U anticipated. 0 Notes 3 ❑Year 2 Date: E V W M U 1� For more information, contact CULTEC at(203) 775-4416 or visit www.cultec.com. Operations r • Maintenance LTEC Major Maintenance 9 years after commissioning n Clean stormwater management chambers and feed every 9 years following connectors of any debris, ❑ Inspect the Interior of the stormwater management structures for deficiencies using CCN or comparable technique, a Obtain documentation that the stormwater man- agement chambers and feed connectors have been cleaned and will function as intended. Notes ❑Year 9 Date; a Year 18 Date; ❑Year 27 Date; U1 n Year 36 Date; iw tlJ .O 45 years after commissioning ❑ Clean stormwater management chambers and feed ,C connectors of any debris. U �- ❑ Determine the remaining life expectancy of the stormwater management chambers and recommended M schedule and actions to rehabilitate the stormwater management chambers as required. D n Inspect the interior of the stormwater management *' chambers for deficiencies using CCTV or comparable U technique, W ❑ Replace or restore the stormwater management chambers In accordance with the schedule determined U at the 45-year Inspection. ❑Attain the appropriate approvals as required. ❑ Establish a new operation and maintenance sched- ule. Notes o Year 45 Date: 12 For more Information, contact CULTEC at(203) 775-4416 or visit www.cultec.com. Major Maintenance Monthly in Ist year ❑ Check for depressions in areas over and surrounding the stormwater management system. Notes ❑Month 1 Date. ❑ Month 2 Date: ❑ Month 3 Date: ❑ Month 4 Date: ❑ Month 5 Date: n Month 6 Date: ❑ Month 7 Date: ❑ Month 8 Date: ❑ Month 9 Date: ❑ Month 10 Date: *Month 11 Date: ❑ Month 12 Date: Spring and Fall ❑Check for depressions in areas over and surrounding the stormwater management system. a; Notes p Spring Date: ❑ Fall Date: ❑Spring Date: D o Fall Date: 3 ❑Spring Date: o Fall Date: ❑Spring Date: ❑Fall Date: ❑ Spring Date: ❑ Fail Date: ❑Spring Date: a Fall Date: Yearly ❑Confirm that no unauthorized modifications have been performed to the site. Notes ❑Year 1 Date: ❑Year 2 Date: ❑Year 3 Date: a Year 4 Date: a Year 5 Date: ❑Year 6 Date: ❑Year 7 Date: For more information, contact CULTEC at (203) 775-4416 or visit www.cultec.com. r 76 k i 3s. Q 3 r !� e f ... � C L,L i } F' " " r � 1 , 16 Blue Cod HOLDINGS.LIC y Oscars Way North Reading,Mx,ovnb"voux 01864 (978)930-6662 modorrh`gmu@hlovoodhn/dium».00m June 4, ZU19 Ms. Monica Gregoire Staff Planner Town of North Andover Town Hall 120 Main Street North Andover, W4A 01845 Re: 630 Turnpike Street, North Andover, k4A Application for Special Permit and Site Plan Review Dear Ms. Gregoire: Thank you for forwarding Horsley Witten Group's Stormwater Peer Review dated June 3, 2019 in connection with the above-referenced property. |accept their recommendations to: • Provide additional 6 inches of stone above the chamber; ' | m Double the size of the chambers,4 chambers with 6 inches of stone above and below and 2 feet of stone on all four sides will provide 282.96 cf of storage which Is greater than the required 272 cf, i • At the time of construction excavate a deep test hole to verify that the ESHGW is below elevation 246.74.The results should be provided to the Building Inspector and Planning Board; and m Provide a Long-Term Operation& Maintenance Plan signed by the property owner for future inspections and maintenance ofthe subsurface system and provide to the Building Inspector and Planning Board. | enclosed a signed Operation and Maintenance Plan. This plan b designed and recommended bythe manufacturer for its systems. Please contact me should you have any questions regarding the plan or anything else contained in this letter. Sincerely yours, Michael A. Don|nAtnn Chief Executive Officer and Manager Enclosures lip - + rl - LV L;) 'A M 0 1 Rs a Boman :`°�r, -� RNs-t�-tqv*y .ham :;. ' ~ .y,,,�€ �."1� r firJ`yy� N y. ;:.,•'wr+{yy'y' 'N'Yr-�,t '�tJ}n f - .}< _r�fi. ti, { a-5 sal JA a �r 4Kk $ s x 5 1 E Operations and Maintenance Guidelines LTEC Published by CULTEC, Inc. P.O. Sox 280 878 Federal Road Brookfield, Connecticut 06804 USA www.cuitec.com Copyright Notice © 2017 CULTEC, Inc. All rights reserved. Printed in the USA. This document and any accompanying CULTEC products are copyrighted by CULTEC, Inc. Any reproduc- tion and/or distribution without prior written consent from CULTEC, Inc. is strictly prohibited. Disclaimers; The drawings, photographs and illustrations shown in this document are for illustrative purposes only and are not necessarily to scale. Actual designs may vary. CULTEC reserves the right to make design and/or speclFication changes at any time without notice at CULTEC's sole discretion, CULTEC is not responsible for typographical errors. Protected by one or more of the following patents: Protected by one or more of the following patents: U.S. Patents 6,129,482; 6,322,288; 6,854,925; 7,226,241; 7,806,627; 8,366,346; 8,425,148; and oth- ers; U.S. Designs D613819; D638,095; D668,318 and others; Canadian Patent 2,591,255 and others; Community Designs 1092191; 1745209; and others. CULTEC, the CULTEC logo, RECHARGER, CONTACTOR, HVLV, PAC, STORMFILTER, STORMGENIE and The Chamber with The Stripe are registered trademarks of CULTEC, Inc. Chamber of Choice, 902, HD, 100, 125, 150, 150XL, 180, 280, 330, 330XL, V8, 902, Field Drain Panel, C-1, C-2, C-3, C-4, EZ-24, Landscape series are trademarks of CULTEC, Inc. All rights reserved. Contact Information: For general information on our other products and services, please contact our offices within the United States at (800)428-5832, (203)775-4416 ext. 202, or e-mail us at custservice@cultec.com. For technical support, please call (203)775-4416 ext. 203 or e-mail tech@cultec.com. Visit www.cultec.com/downtoads,htmi for Product Downloads and CAD details. i Doc ID: CULGO08 05-17 May 2017 I These instructions are for single-layer traffic applications only. For multi-layer applications, contact CULTEC, All Illustrations and photos shown herein are examples of typical situations. Be sure to follow the engineers drawings, Actual designs may vary. 2 For more information, contact CULTEC at(203) 775-4416 or visit www.cultec.com. CULTEC Stormwater Chambers This manual contains guidelines recommended by CULTEC, Inc. and may be used in conjunction with, but not to supersede, local regulations or regulatory authorities. OSHA Guidelines must be followed when inspecting or cleaning any structure. Introduction The CULTEC Subsurface Stormwater Management System is a high-density polyethylene (HDPE) chamber system arranged in parallel rows surrounded by washed stone. The CULTEC chambers create arch-shaped voids within the washed stone to provide stormwater detention, retention, infiltration, and reclamation. Filter fabric is placed between the native soil and stone interface to prevent the intrusion of fines into the system. In order to minimize the amount of sediment which may enter the CULTEC system, a sediment collection device (stormwater pretreat- ment device) is recommended upstream from the CULTEC chamber system. Examples of pretreatment devices include, but are not limited to, an appropriately sized catch basin with sump, pretreatment catchment device, oil grit separator, or baffled distribution box. Manufactured pretreatment devices may also be used in accordance with CULTEC chambers. Installation, operation, and maintenance of these devices shall be in accordance with manufacturer's recommendations. Almost all of the sediment entering the stormwater management system will be collected within the pretreatment device. Best Management Practices allow for the maintenance of the preliminary collection systems prior to feeding the CULTEC chambers. The pretreatment structures shall be inspected for any debris that will restrict inlet flow rates. Outfall structures, if any, such as outlet control must also be inspected for any obstructions that would restrict outlet flow rates. OSHA Guidelines must be followed when inspecting or cleaning any structure. Operation and Maintenance Requirements I. Operation CULTEC stormwater management systems shall be operated to receive only stormwater run-off in accordance with applicable local regulations. CULTEC subsurface stormwater management chambers operate at peak performance when installed in series with pretreatment. Pretreatment of suspended solids is superior to treatment of solids once they have been introduced into the system. The use of pretreatment is adequate as long as the structure is maintained and the site remains stable with finished impervious surfaces such as parking lots, walkways, and pervious areas are properly maintained. If there is to be an unstable condition, such as improvements to buildings or parking areas, all proper silt control measures shall be implemented according to local regulations. II. Inspection and Maintenance Options A. The CULTEC system may be equipped with an inspection port located on the inlet row. The inspection port Is a circular cast box placed in a rectangular concrete collar. When the lid is removed, a 6-inch (150 mm) pipe with a screw-in plug will be exposed. Remove the plug. This will provide access to the CULTEC Chamber row below. From the surface, through this access, the sediment may be measured at this location. A stadia rod may be used to measure the depth of sediment If any in this row. If the depth of sediment is in excess of 3 inches (76 mm), then this row should be cleaned with high pressure water through a culvert cleaning nozzle. This would be carried out through an upstream manhole or through the CULTEC StormFilter Unit (or other pre- treatment device). CCTV inspection of this row can be deployed through this access port to deter mine if any sediment has accumulated In the Inlet row. B. If the CULTEC bed is not equipped with an inspection port, then access to the inlet row will be through an upstream manhole or the CULTEC StormFilter. 1. Manhole Access This inspection should only be carried out by persons trained in confined space entry and sewer Inspection Services. After the manhole cover has been removed a gas detector must be lowered into the manhole to ensure that there are not high concentrations of toxic gases present, The Inspector should be lowered Into the manhole with the proper safety equipment as per OSHA requirements. The inspector may be able to observe sediment from this location. If this is not possible, the Inspector will need to deploy a CCTV robot to permit viewing of the sediment. For more information, contact CULTEC at (203) 775-4416 or visit www.cultec.com. 3 i Operations / Maintenance Guidelines 2. StormFilter Access Remove the manhole cover to allow access to the unit. Typically a 30-inch (750 mm) pipe Is used as a riser from the StormFilter to the surface. As In the case with manhole access, this access point requires a technician trained in confined space entry with proper gas detection equipment. This individual must be equipped with the proper safety equipment for entry into the StormFilter. The technician will be lowered onto the StormFilter unit, The hatch on the unit must be removed. Inside the unit are two filters which may be removed according to StormFilter maintenance guidelines. Once these filters are removed the inspector can enter the StormFilter unit to launch the CCTV camera robot. C. The inlet row of the CULTEC system Is placed on a polyethylene finer to prevent scouring of the washed stone beneath this row. This also facilltates the flushing of this row with high pressure water through a culvert cleaning nozzle, The nozzle is deployed through a manhole or the StormFilter and extended to the end of the row. The water is turned on and the inlet row is back-Hushed into the manhole or StormFilter. This water is to be removed from the manhole or StormFilter using a vacuum truck, III. Maintenance Guidelines The following guidelines shall be adhered to for the operation and maintenance of the CULTEC stormwater management system: A. The owner shall keep a maintenance log which shall include details of any events which would have an effect on the system's operational capacity. B. The operation and maintenance procedure shall be reviewed periodically and changed to meet site conditions. C. Maintenance of the stormwater management system shall be performed by qualified workers and shall foliow applicable occupational health and safety requirements. D. Debris removed from the stormwater management system shall be disposed of in accordance with applicable laws and regulations. IV. Suggested Maintenance Schedules A. Minor Maintenance The following suggested schedule shall be followed for routine maintenance during the regular operation of the stormwater system: Monthly In first year Check inlets and outlets for clogging and remove any debris, as required. Spring and Fall Check inlets and outlets for clogging and remove any debris, as required. One year after commissioning and every third Check inlets and outlets for clogging and remove any debris, as required. year following B. Mayor Maintenance The following suggested maintenance schedule shall be followed to maintain the performance of the CULTEC stormwater management chambers. Additional work may be necessary due to insufficient performance and other issues that might be found during the inspection of the stormwater management chambers. (See table on next page) 4 For more Information, contact CULTEC at(203) 775-4416 or visit www.cultec.com. ....................... CULTEC Stormwater Chambers Inlets and Outlets Every 3 years Obtain documentation that the inlets, outlets and vents have been cleaned and will function as intended. Spring and Fall • Check Inlet and outlets for clogging and remove any debris as re- quired. CULTEC Stormwater 2 years after commis- • Inspect the Interior of the stormwater management chambers Chambers sion€ng through Inspection port for deficiencies using CCTV or comparable technique. • Obtain documentation that the stormwater management chambers and feed connectors will function as anticipated. 9 years after commis- Clean stormwater management chambers and feed connectors of sloning every 9 years any debris. following • Inspect the Interior of the stormwater management structures for deficiencies using CCTV or comparable technique. • Obtain documentation that the stormwater management chambers and feed connectors have been cleaned and will function as Intend- ed. 45 years after com- Clean stormwater management chambers and Feed connectors of mission€ng any debris. • Determine the remaining life expectancy of the stormwater man- agement chambers and recommended schedule and actions to reha- bilitate the stormwater management chambers as required. • Inspect the Interior of the stormwater management chambers for deficiencies using CCTV or comparable technique. • Replace or restore the stormwater management chambers in accor- dance with the schedule determined at the 45-year Inspection. • Attain the appropriate approvals as required. • Establish a new operation and maintenance schedule. Surrounding Site Monthly in i$tyear Check for depressions in areas over and surrounding the stormwater management system. Spring and Fall Check for depressions in areas over and surrounding the stormwater management system. yearly Confirm that no unauthorized modifications have been performed to the site. For additional information concerning the maintenance of CULTEC Subsurface Stormwater Management Chambers, please con- tact CULTEC, Inc. at 1-800-428-5832. For more Information, contact CULTEC at (203) 775-4416 or visit www.cultec.com. 5 E d E i i Operations and Maintenance Guidelines 1 WQMP Operation & Maintenance (O&M ) Plan Project Name. 630 Turnpike St. Prepared for: Project Name: Blue Cod Holdings, LLC Address.- 5 Oscars Way City, state zip: North Reading, MA 01864 Prepared on: Date:June 4, by Michael Dorrington, Its Manager w 0 6 For more information,contact CULTEC at(203) 775-4416 or visit www.cultec.com. i CULTEC Stormwater Chambers CL This O&M Plan describes the designated responsible party for Implementation of this WQMP, including: operation and maintenance of all the structural BMP(s), conducting the training/educational program and duties, and any other necessary activities. The O&M Plan includes detailed Inspection and maintenance requirements for all struc- tural BMPs, including copies of any maintenance contract agreements, manufacturer's maintenance requirements, permits, etc. 8.1.1 Project Information Project name 630 Turnpike St, Address 630 Turnpike St. City, state zip North Andover, MA Site size List of structural BMPs, number of each Other notes 8.1.2 Responsible Party The responsible party for implementation of this WQMP is: Name of Person or HOA Property Manager Michael Dorrington Address 5 Oscars Way City, State Zip North Reading, MA 01864 Phone number 978-930-6662 24-Hour Emergency Contact number same as above Email mdorrington@bluecodholdings.com 8.1..3 Record Keeping Parties responsible for the O&M plan shall retain records for at least 5 years. All training and educational activities and BMP operation and maintenance shall be documented to verify compli- ance with this O&M Plan, A sample Training Log and Inspection and Maintenance Log are included in this docu- ment, 8.1.4 Electronic Data Submittal This document along with the Site Plan and Attachments shall be provided in PDF format. AutoCAD files and/or GIS coordinates of BMPs shall also be submitted to the City. For more information, contact CULTEC at (203) 775-4416 or visit www.cultec.com. 7 Operations rGuidelines LTEC Appendix BMP SITE PLAN Site plan is preferred on minimum 11" by 17" colored sheets, as long as legible, i 8 For more information,contact CULTEC at(203) 775-4416 or visit www.cultec.com. Chambers BMP OPERATION & MAINTENANCE LOG Project Name: 630 Turnpike St, Today's Date: Name of Person Performing Activity (Printed): Signature: For more information, contact CULTEC at(203) 775-4416 or visit www.cultec.com. 9 Operations and Maintenance Guidelines III LTEC i i i Minor Maintenance Monthly in first year Check inlets and outlets for clogging and remove any debris, as required. Notes ❑ Month 1 Date- i ❑Month 2 Date: ❑ Month 3 Date: ❑ Month 4 Date j ❑ Month S Date: ❑Month 6 Date: i ❑ Month 7 Date: ❑ Month 8 Date: ❑Month 9 Date: ❑Month 10 Date: a Month 11 Date: ❑Month 12 Date: Spring and Fall Check inlets and outlets for clogging and remove any debris, as required. Notes n Spring Date: a Fall Date: ❑Spring Date: ❑ Fall Date: n Spring Date: a Fall Date: ❑Spring Date: ❑Fall Date: ❑ Spring Date: ❑ Fall Date: n Spring Date: ❑Fall Date: One year after commissioning Check inlets and outlets for clogging and remove any debris, as required. and every third year following Notes ❑Year 1 Date: ❑Year 4 Date: a Year 7 Date: ❑Year 10 Date: ❑Year 13 Date: ❑Year 16 Date: ❑Year 19 Date: a Year 22 Date: 10 For more information,contact CULTEC at(203) 775-44:L6 or visit www.cultec.com. Chambers CUL Major Maintenance IRENE Every 3 years Obtain documentation that the inlets, outlets and vents have been cleaned and will function as intended. Notes ❑Year 1 Date: ❑Year 4 Date: ❑Year 7 Date: ❑Year 10 Date: ❑Year 13 Date: ❑Year ib Date: +' ❑Year 19 Date: C7 P ❑Year 22 Date: a Spring and Fait Check Inlet and outlets for clogging and remove any debris, as required. +, Notes ❑Spring Date; 1-4 o Fall Date: ❑Spring Date: ❑ Fall Date: ❑Spring Date: ❑ Fail Date: n Spring Date: ❑Fall Date: ❑Spring Date: ❑ Fall Date: ❑Spring Date: ❑Fall Date.- 2 years after commissioning n Inspect the interior of the stormwater management L, chambers through inspection port for deficiencies using CCTV or comparable technique. P Obtain documentation that the stormwater manage- ment chambers and feed connectors will function as U anticipated. d Notes ❑Year 2 Date: E O U _J U For more information, contact CULTEC at(203) 775-4416 or visit www,cuitec.com, Operations fi I Mayor Maintenance MEMO i� 9 years after Commissioning ❑Clean stormwater management chambers and feed every 9 years following connecters of any debris. I n Inspect the Interior of the stormwater management structures for deficiencies using CCTV or comparable technique, ❑Obtain documentation that the stormwater man- agement chambers and feed connectors have been cleaned and will function as Intended. Notes o Year 4 Date: i i ❑Year 18 Date; i ❑Year 27 Date: Vl ❑Year 36 Date: E11 M45 years after commissioning ❑ Clean stormwater management chambers and feed connectors of any debris. U �^ ❑ Determine the remaining life expectancy of the stormwater management chambers and recommended schedule and actions to rehabilitate the stormwater management chambers as required. 0 ❑ Inspect the interior of the stormwater management chambers for deficiencies using CCTV or comparable U technique. W a Replace or restore the stormwater management chambers in accordance with the schedule determined U at the 45-year Inspection. •Attain the appropriate approvals as required. i ❑ Establish a new operation and maintenance sched- ule. Notes ❑Year 45 Date: i 12 For more information, contact CULTEC at(203) 775-4416 or visit www.cultec.com. CULTEC Stormwater Chambers Major Maintenance Monthly in 161year ❑ Check For depressions in areas over and surrounding the stormwater management system, Notes ❑ Month 1 Date: ❑ Month 2 Date: n Month 3 Date: ❑ Month 4 Date. ❑ Month 5 Date: ❑Month 6 Date: ❑Month 7 Date: ❑Month 8 Date: ❑Month 9 Date: ❑Month 10 Date: ❑ Month 11 Date: ❑ Month 12 Date: Spring and Fall ❑ Check for depressions In areas over and surrounding the stormwater management system, .s+ Notes (A ❑Spring Date: C ❑ Fall Date: C ❑Spring Date: 7 O ❑ Fall Date: ❑ Spring Date: ❑ Fail Date: ❑Spring Date: ❑ Fall Date: ❑ Spring Date: ❑ Fall Date: ❑ Spring Date: ❑ Fall Date: Yearly ❑Confirm that no unauthorized modifications have been performed to the site. Notes ❑Year 1 Date: o Year 2 Date: ❑Year 3 Date: ❑Year 4 Date: o Year 5 Date: a Year 6 Date: ❑Year 7 Date: For more information, contact CULTEC at (203) 775-4416 or visit www.cultec.com. y 4 r Il;'TA�i � - "�' - .; r The Founder of Plastic Chamber Technology p CULTEC �`, .