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Home My WebLink About- Consultant Review - 87 FOSTER STREET 8/23/2018 North Andover Health Department Community and Economic Development Division ONSITE WASTEWATER SYSTEM CONSTRUCTION NOTES LOCATION INFORMATION ADDRESS: 87 Foster Street MAP: 104.D LOT: 48 INSTALLER: Warren Pearce Jr. 978-664-5264 DESIGNER: James Kavanaugh 978-375-9781 PLAN DATE: February 22, 2018 w/ Final Revision March 19, 2018 BOH APPROVAL DATE ON PLAN: March 22, 2018 INSPECTIONS TANK INSPECTION: 5/15/2018 DATE OF BED BOTTOM INSPECTION: 5/2/2018 DATE OF FINAL CONSTRUCTION INSPECTION: 6/13/18 DATE OF FINAL GRADE INSPECTION: *see email from William Phillips 6/12/2018 to Michele Grant Plumbing Permit # 36250 5/30/2018 SITE CONDITIONS Contractor reports any changes to design plan Existing septic tank properly abandoned Internal plumbing all to one building sewer Topography not appreciably altered Comments: 6/13/18 IR - Rotated septic tank due to ledge encountered during excavation, installer indicated he reviewed this change with B. LaGrasse at Health Dept. SEPTIC TANK Building sewer in continuous grade, on compacted firm base N/A Cleanouts per plan Bottom of tank hole has 6” stone base Weep hole plugged 1500 gallon tank has been installed H-10 loading Monolithic tank construction Water tightness of tank has been achieved by visual testing Inlet tee installed, centered under access port Outlet tee installed, centered under access port (effluent filter) 24" inch cover to finish grade installed over outlet access port Neoprene cement around inlet & outlet Comments: 6/13/18 IR – installer will install 24” manhole cover over outlet access port during finish grading 5/15/2018 Installer wants to make changes on pipe and tank. He was told to stick to the plan. 5/2/2018 Wants to move the tank slightly closer to the bed. Engineer approved via email. DISTRIBUTION-BOX Installed on stable stone base H-20 D-Box N/A Inlet tee (if pumped or >0.08’/foot) Hydraulic cement around inlet & outlets Observed even distribution Speed levelers provided (not required) Schedule 40 PVC Pipe Comments: SOIL ABSORPTION SYSTEM (General) Bottom of SAS excavated down to C soil layer, as provided on plan Size of SAS excavated as per plan Title 5 sand installed, if specified on plan 40 Mil HDPE barrier installed Laterals installed and ends connected to header (and vented if impervious material above) Elevations of laterals and chambers installed as on approved plan N/ARetaining wall (boulder / concrete / timber/ block) Final cover as per plan Comments: 35’widex 60.7 FINAL GRADE **see email from William Phillip\[s dated 6/12/2018 to M. Grant Loamed Seeded Cover per plan Comments: Spoke to William Phillips - T-V requires 9 “ of loom for cover (at least) DOCUMENTS NEEDED Certification of Installation Form submitted By engineer and signed and dated by Engineer and installer As-Built Plan BM = 100.00 HR = 2.50 HI = 102.50 SYSTEM ELEVATIONS ROD AS-BLT INVERT DESIGN INVERT ELEVATION ELEV ELEV Benchmark Building Sewer OUT 7.45 94.70 94.70 Septic Tank IN 7.86 94.29 94.20 Septic Tank OUT 8.03 94.12 93.95 Distribution Box IN 8.66 93.49 93.50 Distribution Box OUT 8.33 93.32 93.33 Lateral 1 TOP 8.94 / 9.17 Lateral 1 INVERT 93.21 / 92.98 93.25 / 93.00 Lateral 2 TOP 8.94 / 9.17 Lateral 2 INVERT 93.21 / 92.98 93.25 / 93.00 Lateral 3 TOP 8.94 / 9.17 Lateral 3 INVERT 93.21 / 92.98 93.25 / 93.00 Lateral 4 TOP 8.94 / 9.17 Lateral 4 INVERT 93.21 / 92.98 93.25 / 93.00 Bottom of Bed 10.03 92.47 92.50 CRITICAL SETBACK DISTANCES Mark those distances checked in the field against the design plan and regulatory setback Tank SAS Sewer Property line 10 10 -- Cellar wall 10 20 -- Inground pool 10 20 -- Slab foundation 10 10 -- Deck, on footings, etc 5 10 -- 1 Waterline 10 10 10 2 Private drinking well 75 100 50 Irrigation well 75 100 Surface Water 25 50 Bordering Vegetated Wetland , 3 Salt Marsh, Inland / Coastal Bank 75 100 Wetlands bordering surface water supply or trib. (in Watershed) 150 150 Trib. to surface water supply 325 325 Public well 400 400 Interim Wellhead Prot. Area Reservoirs 400 400 Drains (wat. supply/trib.) 50 100 Drains (intercept g.w.) 25 50 Drains (Other) Foundation 10 (5) 20 (10) Drywells 20 25 1 Suction line 222(2) 2 100 feet is a minimum acceptable distance and no variance is allowed for a lesser distance (NA 5.02). 3 As defined in 310 CMR 10.55, 10.32, 10.54, and 10.30, respectively, pursuant to 15.211(3), also by NA wetland bylaws