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Home My WebLink About2022-01-04 Pool Maintenance & BMP Plan WSP Sul/,Nan .EngineePrng Croup, LLC CYrr11 ErlginooTs&Land Development CovsuAgnts Pool. Maintenance and BMP Plan 212 Brentwood Clecle North Andover, MA 01846 Dec, 27, 2021 Storage of Chemicals Pool chemicals will be stored inside the new shed and according to their presoribed storage environments, in order to ensure containment of spills. D indown a0d Malntenance Prior to seasonal closure. or draining of the pool for maintenance, chlorine levels will be reduced to undetectable levels of<0.1 mg/1 i either by: I) eliminating chlorine usage for approximately ten days to allow chlorine levels to dissipate, or 2) utilizing sodium thiosulphate or other pool dechlorination chemicals. approved by DEP for use in watershed areas. Vllater will only be discharged into the river rock trench on the backside of the pool:pato, which will allow further filtration and infiltration of the water. The trench has sufficient storage to prevent any overflow of water. Overflow ProtectIQ Whenever a severe or 190-year storm .event is predicted, the pool water level will be drained, pursuant to the above methods, to a level.to permit 8 inches of rain to be colleckod in the pool Infiltration Reach h ainte ancg Infiltration trenches will be inspected at the seasonal opening acid closing of the pool, and after major storm events per.above. Debris will be removed, and any 'silted or clogged stone will be replaced .as needed to maintain the design performance of the trenches. Engineer's Certification --212 Brentwood Circle 1, John D. Sullivan III, P.E., certify by..signirig below that the work as depicted on the plan titled 'Plot Plan of Land—212 Brentwood Circle, NA, dated 9/24/2021, revised 12/6/21 prepared by Sullivan Engineering Group, LLC Will not result in the significant degradation of the duality or quantity of water in or entering l_ako Cochichewick. In accordance with Sta.bdaard 9 in the Massachusetts StoXmwater Randbook a Long Tehn O&M drainage plan is being pxovicled to aecoinpany the pool/patio/shed ns lation�at the above propcity. The owner selected a low-impact,drainage design(river rock none tration tFemhes)which wM roqui�d little to no maintenance. In-order to detor,wi -e if the i.7-rer rodk 16 functioning as designed.the following haspeaf Oxis.shall occur at least once a year and after any storm event(3" or gteater). R0'. Box.2004 Wobuzn,M A.:b1888 (181) g54�4644 e-xa affjacksWI53@conica$t.net a, .Site vegetation and onsite landscaping shah be maintained.in healthy condition to prevent erosion and sedimentation in the two river rock infiltration trenches. b. River Rock trenches---$hall be inspected trice annually. Sediment and debris (including leaves) shall be removed and disposed of in accordance with all applicable federal, state, and local_laws. In the eventthat water does not leaw the trench within.72 hours this is a sign of failure and the trench should be repaired,including excavating and replacing stone,to insure proper functioning. Submitted by: j E. 12--27-2021 ro 8u an : Date: J 2-27-202I John To o,Property Owner Date: P.O. Bok 2004 Woburn,MA 01.888 (781) 854-5.644 e-mail.:jacksu1153@egmcast.net. i i i Sullivan .Engineering Group, LLC Civil Englneers&Land Development Consultants Pool Maintenance and BMP Plan 212 Brentwood Circle North Andover, NIA 01845 December 8, 2021 Storage of Chemicals Pool chemicals will be stored inside the new shed and according to their prescribed storage environments, in order to ensure containment of spills. Draingkown and intenance Prior to seasonal closure or draining of the pool for maintenance, chlorine levels will be reduced to undetectable levels of <0.1 mg/1, either by: 1) eliminating chlorine usage for approximately ten days to allow chlorine levels to dissipate, or 2) utilizing sodium thiosulphate or other pool dechlorination chemicals approved by DEP for use in watershed areas. Water will only be discharged into the river rock trench on the backside of the pool pato, which will allow further filtration and infiltration of the water. The trench has sufficient storage to prevent any overflow of water. Overflow Protection Whenever a severe or 100-year storm event is predicted, the pool water level will be drained, pursuant to the above methods, to a level to permit 8 inches of rain to be collected in the pool InfiltEa_tion Trench Maintenance Infiltration trenches will be inspected at the seasonal opening and closing of the pool, and after major storm events per above. Debris will be removed, and any silted or clogged stone will be replaced as needed to maintain the design performance of the trenches. Engineer's Certification --212 Brentwood Circle 1, John D. Sullivan ill, P.E., certify by signing below that the work as depicted on the plan titled "Plot Plan of Land — 212 Brentwood Circle, NA, dated 9/24/2021, revised 1216/21 prepared by suliivan Engineering Group, LLC will not result in the significant degradation of the quality or quantity of water in or entering Lake Cochichewick. In accordance with Standard 9 in the Massachusetts Stormwater Handbook a Long Tenn O&M drainage plan is being provided to accompany the pool/patio/shed installation at the above property. The owner selected a low-impact drainage design(river rock stone infiltration trenches) which will require little to no maintenance. In order to dete>inine if'the river rock is functioning as designed the following inspections shall occur at least once a year and after any storm event(37'or greater). P.O. Box 2004 Woburn, MA 01888 (781) 854-8644 e-mail:jacksu1153@comeast.net ;I' a, Site vegetation and onsite landscaping shall be maintained in healthy condition to prevent erosion and sedimentation in the two river rock infiltration trenches. b. River Rock trenches—shall be inspected annually. Sediment and debris (including leaves) shall be removed and disposed of in accordance with all applicable federal, state, and local laws, In the event that water does not leave the trench within 72 hours this is a sign of failure and the trench should be repaired, ' uding excavating and replacing stone,to insure proper functioning. Submitted b ) W. y: 12-8-2021 Jolt . Surgr Date: • Z 12-8-2021 John Te ullo,Property Owner Date: P.O. Box 2004 Wobum,MA 01888 (781) 854-8644 e-mail:jackst11153@comeast.net