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HomeMy WebLinkAbout2023-11-21 Recorded Decision WSP 2 :U',l): 0 2 Kh F� -Ll;L- r,Lo ttORTH 0 �7 R, Town of North Andover 0 Office of the Planning Department, 120 Main Street North Andover,Massachusetts 01845 ITS C T NOTICE OF DECISION 7-S Watershed Special Permit T Any appeal shall be filed This Is certify that w1eoty(20)days 'foly,QIte of doc-1,00n within (20) days after the have elaP50 I f,n oppeal. Without Ming 0 a j�A 'ling this notice in OL- `date of fi _5_4 Carla awnsWarren the office of the Town Clerk, Town clerk Date: November 21, 2023 Date of Hearings: November 21,2023 Date of Decision: November 21,2023 Petition of: Christopher&Katherine Hughes,173 Johnson Street,North Andover, Massachusetts,01845 Premises Affected: 173 Johnson Street,North Andover,Massachusetts,01845 Assessor's Map 97 Lot 23 and located in the Residential 3 Zoning District. Referring to the above petition for a Watershed Special Permit from the requirements of the North Andover Zoning Bylaw, Chapter 195 Article 4, Part 5 Watershed Protection District Section 195-4.19(B) and Article 10 Section 195-10.7, So as to allow the construction of a 13.08' x 20.83' addition to a single family house outside of the 100' Non- Disturbance buffer zone, but inside the 325' Non-Discharge buffer zone of the Watershed Protection District. The Project is located within the Residential 3 zoning district, After a public hearing given on the above date, and upon a motion by P. Boynton and 2,d by C. Koskores to APPROVE the Watershed Special Permit, as amended, and based upon the following conditions, Vote was 5-0 in favor of the application, Jean Enright On Behalf of the North Andover Planning Board Joh 11'skqont 1-ter oyn,� ' Gemmq,'Wilken§ 1-bris Koskores',, rf A Trig!c6ply rowel,cleric i 173 Johnson Street Watershed Special Permit—Construct addition November 21,2023 The public hearing on the above referenced application was opened on November 21, 2023 and closed by the North Andover Planning Board on November 21, 2023. On November 21, 2023, Upon a motion made by P. Boynton and seconded by C. Koskores to GRANT a Watershed Special Permit for the construction of a 13.08' x 20.83' addition to a single family house outside of the 100' Non-Disturbance buffer zone, but inside the 325' Non-Discharge buffer zone of the Watershed Protection District under the requirements of Article 4 Part 5 Section 195-419(B) and Article 10, Section 195-10.7 of the North Andover Zoning Bylaw, This Special Permit was requested by Christopher & Katherine Hughes, 173 Johnson Street,North Andover,MA 01845 on November 2,2023. The Applicant submitted a complete application, which was noticed and reviewed in accordance Town of North Andover Zoning Bylaw and MGL Chapter 40A, Section 9. The motion to approve was subject to the FINDINGS OF FACTS and SPECIAL CONDITIONS set forth in this decision. The Planning Board vote was 5-0, unanimous, in favor. A Special Permit issued by the special permit granting authority requires a vote of at least four members of a five member board. The Applicant is hereby notified that should the Applicant disagree with this decision, the Applicant has the right,under MGL Chapter 40A, Section 17,to appeal to this decision within twenty days after the date this decision has been filed with the Town Clerk. The Planning Board makes the finding that the intent of the Bylaw, as well as its specific criteria are met. This decision specifically stated by the Planning Board makes the following FMINGS OF FACT: 1) That as a result of the proposed construction in conjunction with other uses nearby,there will not be any significant degradation of the quality or quantity of water in or entering Lake Cochichewick. The Planning Board bases this finding on the following facts: a) The Project is located within an extremely environmental sensitive area and in close proximity to a wetland resource area that drains to Lake Cochichewick. The final design reflects discussions between the Town and Applicant to ensure the continued protection of Lake Cochichewick and the safety and welfare of the residents of North Andover. b) The construction has been reviewed by Town Staff and the Town's stormwater management consulting engineer, Horsley Witten, and with the application of the erosion control measures and drainage and`-stormwater management designs, the consultant concluded that there will not be significant degradation to the quality or quantity of water in or entering Lake Cochichewick. The Site drainage system and stormwater management design are designed in accordance with the Town Bylaw requirements and Best Engineering and Management Practices. The plan has been reviewed by the outside consulting engineer, Janet Carter Bernardo, P.E., as evidenced by letters dated November 16, 2023 and response correspondence from Sullivan Engineering Group, LLC dated November 20,2023.Further, adequate safeguards have been provided to mitigate pollutants from entering Lake Cochiclewick through the instal lationlimplementation of the following Best Management Practices relative to an addition to a single-family dwelling: i) Stormwater mitigation has been provided to account for increases in impervious areas. Proposed drainage infiltration field consisting of cultic units has been provided to capture the 100 year rain event(8.6"per Town of North Andover Stormwater Bylaw). ii) The drainage infiltration system is proposed to collect the entire roof area of the proposed addition roof. 2 173 Johnson Street Watershed Special Permit—Construct addition November 21,2023 iii) Roof runoff will be collected by gutters and 4 inch HPDE roof drains and conveyed to a drainage infiltration field consisting of cultec recharge units and washed crushed stone. iv) The drainage field has been sized to store/infiltrate the 2, 10, 25, and 100 year storm event. v) The infiltration field is sited 5.2 feet above the seasonal high groundwater table (2 feet required). vi) The existing dwelling is connected to the municipal sewer system; therefore, there will be no potential increase in nitrogen levels over the existing background levels of the property. vii) Natural wooded buffers will be retained, No trees are to be out/removed as part of this Project. The entirety of the Project is on an existing lawn area. viii) Grading changes have been limited on Site. Existing drainage watercourses will continue to function as in the undeveloped state. ix) Fertilizers are limited to those which are either organic or slow-release nitrogen and phosphorous-free. This restriction will be noted in a deed restriction. c) The existing structure is connected to the Town sewer and water systems. d) The Stormwater Report dated November 1,2023 includes a signed Illicit Discharge Statement. e) The application was reviewed by Town staff. No department review continents were received. f) Erosion control, consisting of a silt fence with wood stakes and 6"x 6"trench with backfill in place, will be installed prior to construction and will remain in place throughout construction. The location of these controls is noted on the Plan. 2) There is no reasonable alternative location outside the General, Non-Disturbance, and the Non- Discharge Zones for any discharge, structure or activity as the entire parcel is located the Non-Discharge Zone. In accordance with Section 195-10.7 of the North Andover Zoning Bylaw, the Planning Board makes the following FINDINGS OF FACT. 3) The specific Site is an appropriate location for the proposed use as all feasible storrnwater and erosion controls have been placed on the Site; 4) The use will not adversely affect the neighborhood as the lot is Iocated in a Residential 3 Zoning District; 5) There will be no nuisance or serious hazard to vehicles or pedestrians; 6) Adequate and appropriate facilities are provided for the proper operation of the proposed use; 7) The Planning Board also makes a specific finding that the use is in harmony with the general purpose and intent of the North Andover Zoning Bylaw. Upon reaching the above findings,the Planning Board approves this Special Permit based upon the following SPECIAL CONDITIONS: 8) Permit Definitions: 3 i 173 Johnson Street Watershed Special Permit Construct addition November 21,2023 a) The"Locus"or"Site"refers to the 42,758 SF parcel of land with frontage on Johnson Street as shown on Assessors Map 97,Parcel 23, and also known as 173 Johnson Street,North Andover, Massachusetts. b) The"Plans"refer to the Plans prepared by Sullivan Engineering Group,LLC, dated October 19, 2023 and revised to November 20,2023, entitled"173 Johnson Street, Plot Plan of Land, located in located in North Andover,Massachusetts(Essex County)",prepared for Christopher J. Hughes, Sheets 1 of 1. c) The "Project" or "173 Johnson Street" refers to the construction of a 13.08' x 20.83' addition to a single family house outside of the 100' Non-Disturbance buffer zone, but inside the 325' Non-Discharge buffer zone of the Watershed Protection District. The project is located within the Residential 3 zoning district. d) The"Applicant"refers to Christopher&Katherine Hughes, the Applicant for the Special Permit. e) The"Project Owner"refers to the person or entity holding the fee interest to the title to the Locus from time to time,which can include but is not limited to the Applicant, developer, and owner. 9) The Town Planner shall approve any changes made to these Plans. Any changes deemed substantial by the Town Planner would require a public hearing and modification by the Planning Board. 10) In no instance shall the Applicant's proposed construction be allowed to further impact the Site than as proposed on the Plan referenced in Special Condition##1. 11) Prior to issuance of building permit; a) A performance guarantee bond of four thousand dollars ($4,000.00) made out to the Town of North Andover must be posted to ensure that the construction, erosion control, measures, and performance of any other condition contained herein will take place in accordance with the Plans and the conditions of this decision and to ensure that the as-built plans will be submitted. b) In consultation with the Planning Director, the Applicant shall designate an independent environmental monitor. The monitor shall read, sign, and return to the Town Planner the Letter of Agreement for Independent Monitors. Upon the start of Site work the monitor shall make weekly inspections of the Project(any suspension in monitoring due to inactivity on the Site shall be pre-approved by the Planning Director), provide monthly reports to the Planning Department, and detail any areas of non-compliance and corrective actions. The monitor will also provide reports following heavy rain events. The monitor must also be available upon notice to inspect the Site accompanying a Planning Department designated official. c) All erosion control measures as shown on the Plan must be in place and reviewed by the Town Planner. d) A pre-construction meeting must be held with the developer, their construction employees, and Planning Department (and other applicable departments) to discuss scheduling of inspections to be conducted on the Project and the construction schedule. e) The Applicant will provide copies of all Decisions, Notification and Orders of Conditions from the North Andover Conservation Commission. 4 173 Johnson Street Watershed Special Permit—Construct addition November 21,2023 f) The Applicant shall incorporate the following conditions as a deed restriction and a copy of the recorded deed restriction shall be submitted to the Town Planner and included in the file. i. Fertilizers are limited to those which are either organic or slow-release nitrogen and phosphorous-free. ii. The use of coal tar-based pavement sealants is prohibited. 12) Prior to release of the Performance Bond: a) The Applicant shall submit an as-built plan stamped by a Registered Professional Engineer in Massachusetts that shows all construction, including stormwater mitigation trenches and other pertinent Site features. This as-built plan shall be submitted to the Town Planner for approval. The Applicant must submit a certification from the design engineer that the Site was constructed as shown on the approved Plan. b) The Planning Board must by a majority vote make a finding that the Site is in conformance with the approved Plan. 13) No open burning shall be done except as is permitted during burning season under the Fire Department regulations. 14) The Conb-actor shall contact Dig Safe at least 72 hours prior to commencing excavation. 15) The provisions of this conditional approval shall apply to and be binding upon the Applicant, it's employees and all successors and assigns in interest or control. 16) This Special Permit approval shall be deemed to have lapsed November 21,2025(two years from the date of issuance) exclusive of the time required to pursue or await determination of any appeals, unless substantial use or construction has commenced within said two-year period. Substantial use or construction will be determined by a majority vote of the Planning Board. 17) This decision must be filed with the North Essex Registry of Deeds. The following information is included as part of this decision: Plan titled: 173 Johnson Street, Plot Plan of Land, located in located in North Andover, Massachusetts(Essex County) a) Prepared for: Christopher&Katherine Hughes 173 Johnson Street North Andover,MA 01845 Prepared by: Sullivan Engineering Group,LLC PO Box 2004 Woburn, MA 01888 Scale: 1"=20' Date: October 19, 2023 and revised to November 20, 2023 Sheets: 1 b) Report Titled: Stormwater Report Prepared by: Sullivan Engineering Group,LLC PO Box 2004 Woburn,MA 01888 Date: November 1,2023 5 173 Johnson S(reet Watershed Special Permit—Construct addition November 21,2023 c) Report Title: Long-Term Stormwater Operation&Maintenance Plan Prepared for: Christopher Hughes and Katherine Hughes Prepared by: Sullivan Engineering Group,LLC Date: November 20,2023 cc: Town Departments Applicant Engineer Abutters Assessor � Ilk �a;�r�a(.,.aua.(r+cna+r•cr.lmaaaa.�+a+•� awr[r..LC � � ��,bD N snlwirct nuo �Cw.Run[F-0CrAFlavr a•�wwaeS m�ara PTreOr �:rreE w+m*•ac Rc R� ���w�uc(•+nr�a.uw eainx� ac anmmrs j �ur.� � � TF,�pf7RARY BfNCMMARX CNART.• p es ve arx:r I 8 �' Y j nw/ Do;.PTIAY a P ! 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An updated Site Plan is provided as well with a revision date on 11/20/2023. Items requiring comment are numbered in the same numbering sequence in the 11/16/23 peer review letter for ease in cross referencing. 2b. Summary of Impervious Area(Existing&Proposed) &Land Area to be disturbed Total Land Disturbance: 1,110 s.f. (Permanent Disturbance: 272 s.f., Temp. Disturbance: 838 s.f.) Impervious Areas: Item: Existing: Proposed: House 1,480 1,480 Shed 160 160 Paved Driveway 1,720 1,720 Other Pavement Areas 98 98 Retaining Wall 18 18 Slate Walk 300 300 Paver Patio 396 396 Bulkhead 30 30 Addition n/a 272 Total: 4,202 sf 4,474 sf 8a. A separate LOW line was added to the plan for the construction entrance and tree protection. 8b. A note was to the design plan that the developer shall clearly mark limits of no land disturbance prior to any land disturbance. Sc. One tree is to be protected during construction. A tree protection construction detail was added to the plan with a note. 9. A standalone, signed 0&M Plan has been prepared per the reviewer recommendations. P.O. Box 2004 Woburn, MA 01888 (781) 854-8644 e-mail:jacksu1153@comeast.net 1 I l believe this address's all cbncems and wmumntsper the peer 3review, letter and:Pla�n pg Bogrd comrr�erits: If you have:any qu .bons.please:eiax�or call me. J„W D ,1 c� i'.k 7a' S Jtwan,RE tdo. 49:�86 a' Attachznents: 1} S.tandalona,sgneci.`Q&1VS plan,aiicl skatcli o�:BMP's� 2) i?lotTIP Of Laud—.113 Johiisazz Street,Noxth Andover;f&Ws:ed 11124123, si%16: l"�20' P.O. 3'ox 2U04 Woburn; Iv1A 0' ,888 (78 ) $544.04 e;maxi..j"aelcsu1153@coziacast.riet Sullivan Engineering Group, LLC Civil Engineers&Land Development Consultants Long-Term Stormwater Operation & Maintenance Plan 173 Johnson Street, North Andover Current Owners: Christopher and Katherine Hughes Reponsible Parties for O&M: Christopher and Katherine Hughes Beginning with the construction of the drainage system, and continuing in perpetuity thereafter, the owner(s) of the site shall maintain in accordance with the following schedule: a. Pavement and walkways shall be swept in the early spring immediately after snow melt b. Roof drain inlets, downspouts, and roof drain pipes - All components of the roof drain collection system shall be inspected at least 2 times per year. Sediments and debris shall be removed and disposed of in accordance with all applicable federal, state, and local laws. Any components that become damaged shall be repaired or replaced immediately upon discovery to assure proper conveyance of stormwater runoff into the drywell systems. Leaves shall be removed from gutters. c. Infiltration Chambers--The level of water in the infiltration chambers shall be monitored during and after heavy rain storms at least 2 times per year during the first year of operation and at least twice annually thereafter for evidence of clogging or other problems. If water does not leave the chambers within 72 hours after the storm, or if water breaks out on the surface above the system, or if the roof collection system begins to overflow frequently (for the 10 year storm intensity or less intense storms), the infiltration bed is likely clogged. The infiltration bed shall be cleaned and repaired or replaced as needed to maintain proper functioning. d. Vegetation shall be maintained in healthy condition to prevent erosion and sedimentation in the drainage system and wetland resource areas. e. Infiltration Chamber Inspection Port—The inspection port should be opened to complete the water level inspection and general inspection within the chambers (see item"c" above) 11/20/2023 Owner: Date Katherine Hughes Estimated Operation and Maintenance Cost: $0 if performed by owner; $500/yr if performed by contractor Attached: • Inspection Log • Sketch Plan of Stormwater Inspection Components • Cultee Operation and Maintenance Guidelines P.O. Box 2004 Woburn, MA 01888 (781) 854-8644 e-mail;jacksu1153@comeast.net I i 173 Johnson Street--Inspection Log Inspection and Maintenance Report Form To be completed per the Operation and Maintenance schedule Inspector: Date: Inspection Checklist Item: Pavement and Walkways Accumulated sand, sediment, leaves Yes or No (circle one) Sweeping took place Yes or No (circle one) Roof drains inlets and downspouts Any signs of sediment or debris at outlets Yes or No (circle one) Condition of drain inlets/downspouts Good or Poor (circle one) Any piping need replacement Yes or No (circle one) Remove leaves from gutters Yes or No (circle one) Infiltration Chambers Any signs of water breakout Yes or No (circle one) Any water in chambers Yes or No (circle one) If water in chamber, is it empy after 72 hrs Yes or No (circle one) Vegetation Does site vegetation, including grass look health Yes or No (circle one) Inspection Port Did inspection port open Yes or No (circle one) Is Inspection port in good condition Yes or No (circle one) Additional Notes or Corrective measures taken: P.O. Box 2004 Woburn, MA 01888 (781) 854-8644 e-mail:jacksu1153@comcast.net f� S KE� CH P�AN bF 001 MAINT4= ' I SC 85xo J — } 89x y 1 11N. DUILDINGI� ETSACK L(r� raj �1 << Items a - 8 refer to notation i � ,X9 o f MA.°1 nti'1e nan c S A&d 1, rap. Drai age Field O /P a / 1 / 88x7 7.5 x23�59See detail) / 86x4 / / Prop. 4" HDPE / inspection Port / / r to GradOfass e. 89x4 Area / Limit of Work x5 4x5 Prap.95x0 / asxi / / C J Soil � / /i / —1 7 r Stockpile / 86x2 Area / be Removed rXs / rr / 94 8 95x ��� 9zX /1 a + r3o8. ssx Grass Area M / 95x8 / J 9oX6 92X3 96k 96 9s RQo i° S 53.2' 98x4 ov / ma` s 90/0 o 98x7 95X8 1 tip R A ! i / 4 j Quo f Grass Grass ti a �iy N o Area l�rea ; �� 95x4 ! Qp x2 / ' I Ccr 5econdar Limit of 95x8 j CQr Ex Slate j Work I ne depicting Walkway const ction access 96 ' Wig) ` & egr ss route, te „� . Q, \ 95x1 x3 / 97x8 1 } hrass 9ox4 9 x ~T �, A!`ea 98x7 f I 950 \ V 97X2' 92xi ' C 97x1 °� 98x4 I _��,( // 301, �r��e o\\� 38.3' JG'�yy 1-197x8 y �' J 95 4 ry \1 G F ^' 94x2 43.47 95X5 �-DH 520 34'29"E l FND 97x 97x8 R=15.00 101.�q s8x3 L=4.6 7' / S1S 39,09„E L ` 98x1 C{O s6x2 S� � OP o HIV O o 9�k8 S T��� 97xO � . o r STORMINATER MANAGEMENT SOLUTIONS � � �� :�+ Ali7lLlRrt}�9}Im � :; ;• s A� -*S I T. m r2� �R� D s. V� `1� K ���_ �,l 11 �Fcyt�illT� I.` �"' F ' •�. is a�°rr'" ,� � y, Y5� -:.I - `/ � � �. �� -�3���i+As�/'�"�' i 'e'er �V���r�r+�C�"'"Gi•�"�'.�"R'`"w� °�Y,o'� G��i.h�s, t ti� „s +'!s-6? � � i ;III I�r>/.�, C rS .'•av� ..�ytr� t `��...-£sr•K•r,�'a �a `�r�,sv ID Sa #IvF AV �'t W- W,* ..4' d ".-+F ° dn .%_ ��ir{+ Garr _�?4 F ' µ� 4 Fry�O�wvi19 ' 3d. l + r fi y f a r 1 , r� FOR CULTEC STORMWATERMANAGEMENT SYSTEMS i r a 7 4 � st ➢ i i r3 `. STORMWATER MANAGEMENT SOLUTIONS CULTEC �i S„ r „�V�.h�"4c�.;` N.S,i-wr..a 1,r,. :':. _ -• .. ': ,. .:: :: :.'. _' :: - - - - OPERATIONS AND A . GUIDELINES Published by CULTEC P.O. Box 280 878 Federal Road Brookfield, Connecticut 06804 USA www.cultec.com Copyright Notice @ 2023 CULTEC All rights reserved. Printed in the USA, This document and any accompanying CULTEC products are copyrighted by CULTEC. Any reproduction and/or distribution without prior written consent from CULTEC Is strictly prohiblted, Disclaimers: The drawings, photographs and Illustrations shown In this document are for Illustrative purposes only and are not necessarily to scale. i Actual designs may vary. CULTEC reserves the right to make design and/or speciflcaticn changes at any time without notice at CULTEC's sole discretion. CULTEC, the CULTEC logo, RECHARGER, CONTACTOR, HVLV, PAC, STORMFILTER, STORVIGENIE and The Chamber with The Stripe are registered trademarks of CULTEC, Chamber of Choice, HD, 100, 125, 150, 150XL, 180, 280, 330, 330XL, 360, V8, 902, Field Drain Panel, C-1, C-2, C-3, C-4, EZ-24, Landscape Series are trademarks of CULTEC. ® Copyright on all drawings, illustrations, photos, charts - CULTEC, All rights reserved. Protected by one or more of the following patents owned by Cuitec: US, Patents 6,129,482; 6,322,288; 6,854,925; 7,226,241; 7,806,627; 8,366,346; 8,425,148; U.S. Designs D613,819; D638,095; D668,318; Canadian Patent 2,450,565, 2,591,255; Canadian Designs 129144; 135983; 159073; 160977; and/or other U.S, or Foreign Patent(s) or Patent(s) Pending. 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 CT-CustomerService@cultec.com. For technical support, please call (203)775-4416 ext. 203 or e-mail CT-Tech@cultec.com. Visit www.cultec.com/downloads.htmi for Product Downloads and CAD details, Doc ID: CLT057 11-23 November 2023 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.cultee.com. 0 CULTEC CLT057 11-23 CULTEC r j w CHAMBERS CULTEC This manual contains guldellnes recommended by CULTEC 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. IL 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 (ISO 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. 13. 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 p CULTEC CLT057 I1-23 OPERATIONS ► 1 MAINTENANCE7GUIDELINES 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 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 StormFilter 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 StormFllter 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: .frequency ion Monthly in first year Check inlets and outlets for clogging and remove any debris, as required, Spring and Fail 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. ©CULTEC CL7057 11-23 CULTEC r r CHAMBERS CKTEr frequency. Action Inlets and Outlets Every 3 years # Obtain documentation that the Inlets,outlets and vents have been cleaned and will function as Intended, Spring and Fail 0 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 sioning 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 sioning 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- 0 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- 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 15tyear • Check for depressions In areas over and surrounding the stormwater management system, Spring and Fall 0 Check for depressions in areas over and surrounding the stormwater management system, Year[ # Confirm that no unauthorized modifications have been performed to the site. For additional Information concerning the maintenance of CULTEC Subsurface Stormwater Management Chambers, please contact CULTEC at 1-800-428-5832, For more information, contact CULTEC at (203) 775-4416 or visit www.cultec.com. 5 O CULTEC CLT057 11-23 OPERATIONS AND MAINTENANCE CULTIEG W Q N P Operation & Maintenance (O&M ) Plan Project Name: � m Prepared for: Project Name: Address: City, State Zip: Prepared on. Date: 6 For more information, contract CULTEC at(203) 775-4416 or visit www.cultec.com. ©CULTEC CLT057 11-23 E i CULTEC ■ A r CHAMBERS CULTEC i 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 Address City, State Zip Site size List of structural 5MPs, 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 Address City, State Zip Phone number 24-Hour Emergency Contact number Email 8.1.3 Record Keeping Parties responsible for the O&M plan shall retain records for at least S years. All training and educational activities and 13MP 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 P©F format. AutoCAb files and/or GIS coordinates of 13MPs shall also be submitted to the City. For more information, contact CULTEC at (203) *775-4416 or visit www.cultec.com. 7 ©CULTIC CLT057 11.23 i OPERATIONS AND MAINTENANCE GUIDELINES Appendix BMP SXTE PLAN Site plan Is preferred on minimum 11" by 17"colored sheets, as long as legible. 8 For more information, contact CULTEC at(203) 775-4416 or visit www.cultec.com. (P CULTEC CLT057 11-23 CHAMBERS CULUG BMP OPERATION & MAINTENANCE LOG Project Name: Today's Date: Name of Person Performing Activity (Printed): Signature: Description.BMP;Name Brief of Implementation, (As Shown • Maintenance, and Inspection Activity Performed For more information, contact CULTFC at(203) 775-4416 or visit www.cultec.com. 9 ©CULTEC CLT057 11-23 OPERATIONS AND MAINTENANCE CULTEG Minor Maintenance :!:Freq6ency ; Action Monthly in first year Check Inlets and outlets for clogging and remove any debris, as required. ❑ Month 1 Date: ❑ Month 2 Date: Li Month 3 Date: ❑ Month 4 Date * Month 5 Date: 4 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 Inlets and outlets for clogging and remove any debris,as required. a r ❑Spring Date: ❑ Fall Date: ❑Spring Date; ❑Fall Date: ❑Spring Date: ❑Fall Date; ❑Spring Date; ❑ Fall Date: ❑Spring Date: ❑Fall Date: ❑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 ❑Year 1 Date; ❑Year 4 Date: ❑Year 7 Date: ❑Year 10 Date: ❑Year 13 Date: ❑Year 16 Date; ❑Year 19 Date: ❑Year 22 Date: iQ For more information, contact CUL7EC at(203) 775-441.6 or visit www.cuitec.corn. ©CULTEC CLT057 11-23 CHAMBERSCULTEC STORMWATER CULUG Major Maintenance Frequency Action : Every 3 years Obtain documentation that the inlets,outlets and vents have been cleaned andwill Function as intended. ❑Year 1 Date: ❑Year 4 Date: n Year 7 Date: ❑Year 10 Date: ❑Year 13 Date: ❑Year 16 Date: 4T ❑Year 19 Date: 47 ❑Year 22 Date: O V Spring and Fall Check Inlet and outlets for clogging and remove any debris, as required. w ❑Spring Date: ❑ Fall Date: ❑Spring Date: ❑ Fall Date: ❑Spring Date: ❑ Fall Date: n Spring Date: ❑ Fail Date: n Spring Date: ❑ Fall Date: o Spring Date: ❑ Fall Date: 2 years after commissioning n inspect the Interior of the stormwater management W chambers through inspection port for deficiencies using CCTV or comparable technique. M ❑Obtain documentation that the stormwater manage- ment chambers and feed connectors will function as anticipated. o Year 2 Date: L O U UJ E— .J U For more information, contact CULTEC at (203) 775-4416 or visit www.cultec.com. x ' ©CULTEC CLT057 11-23 { OPERATIONS 1 • MAINTENANCE GUIDELINES CULT FO Major Maintenance Frequency Action 9 years after commissioning o Clean stormwater management chambers and feed every 9 years following connectors of any debris. n Inspect the Interior of the stormwater management structures for deficiencies using CCTV or comparable technique, o Obtain documentation that the stormwater man- agement chambers and feed connectors have been cleaned and will function as Intended. 0 Year 9 Date: ❑Year 18 Date: ❑Year 27 Date: ❑Year 36 Date: N 45 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 S management chambers as required. 4 ❑ Inspect the Interior of the stormwater management V) chambers for deficiencies using CCTV or comparable {] technique. lu a Replace or restore the stormwater management U chambers In accordance with the schedule determined at the 45-year inspection, •Attain the appropriate approvals as required, ❑ Establish a new operation and maintenance sched- ule. nF �. ❑Year 45 Date: 12 For more information, contact CUi_TEC at (203) 775-4416 or visit www.cultec.com. 0 CULTEC CLT057 1.1-23 CULTEC • y r CHAMBERS CULTEO Major Maintenance Monthly in 1st year ❑Check for depressions In areas over and surrounding the stormwater management system. ❑ Month 1 Date: p Month 2 Date: ❑ Month 3 Date: o Month 4 Date; ❑ Month 5 Date: ❑ Month 6 Date; o Month 7 Date; ❑Month 8 Date: o Month 9 Date: o Month 10 Date: o Month 11 Date;: ❑ Month 12 Date: Spring and Fall o Check for depressions in areas over and surrounding the stormwater management system, ❑Spring Date: i71 ` ❑ Fall Date; V ❑Spring Date: O o Fall Date; L N ❑Spring Date; ❑Fall Date; I ❑Spring Date: ❑ Fall Date; ❑Spring Date; o Fall Date: o Spring Date: ❑ Fall Date: Yearly o Confirm that no unauthorized modifications have been performed to the site. ti ".,C ❑Year 1 Date: o Year 2 Date: ❑Year 3 Date: •Year 4 bate: o Year 5 Date: ❑Year 6 Date: ❑Year 7 Date; For more information, contact CULT£C at(203) 775-4416 or visit www.cu€ter.com. 13 O CULTEC CLT057 11-23 I fi I 1 M d m CULTEC 878 Federal Road • P.O. Box 280 • Brookfield, CT 06804 USA P; (203) 775-4416 + Toll Free; 1(800) 4-CULTEC • www.cu[tec.com CULTEC RETENTION DETENTION INFILTRATIONQUALITY