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Home My WebLink About- Consultant Review - 1 PENNI LANE 11/20/2019 North Andover Health Department Community and Economic Development Division ONSITE WASTEWATER SYSTEM CONSTRUCTION NOTES LOCATION INFORMATION ADDRESS: 1 Penni Lane MAP: 107.D LOT: 57 INSTALLER: Dean Dynan DESIGNER: James M. Kavanaugh P.E. PLAN DATE: 3/26/2019, revision 4/25/2019 BOH APPROVAL DATE ON PLAN: 6/4/2019 INSPECTIONS TANK INSPECTION: DATE OF BED BOTTOM INSPECTION: 6/26/2019 DATE OF FINAL CONSTRUCTION INSPECTION: 8/1/19 DATE OF FINAL GRADE INSPECTION: 11/20/2019 S. Casey 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 – per plan Comments: Dean hit ledge in middle of field. Called Health Department and Engineer. Needs to adjust location of leaching field. 8/1/19 – Building sewer not exposed, could not examine. SEPTIC TANK Building sewer in continuous grade, on compacted firm base 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) 20 inch cover to within 6” of finish grade installed over one access port Hydraulic cement around inlet & outlet Comments: 8/1/19 – Outlet tee not centered in access hole, but effluent filter is accessible. PUMP CHAMBER Bottom of tank hole has 6" stone base Weep hole plugged 1000 gallon Pump Chamber installed H-10 loading Monolithic tank construction Inlet tee installed, centered under access port Pump(s) installed on stable base Alarm float working Pump On/Off floats working Separate on/off floats Drain hole in pressure line 24” cover at final grade installed over pump access port Water tightness of tank has been achieved by visual testing Hydraulic cement around inlet & outlet Comments: 8/1/19 – Pump different than one on plan, floats not set per plan. CONTROL PANEL Alarm & Pump are on separate circuits Alarm sounds when float is tripped Location of control panel: basement Alarm signal located inside: basement Comments: DISTRIBUTION-BOX Installed on stable stone base H-20 D-Box 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 Retaining wall (boulder / concrete / timber/ block) Final cover as per plan Comments: FINAL GRADE Loamed Seeded Cover per plan Comments: DOCUMENTS NEEDED Certification of Installation Form submitted By engineer and signed and dated by Engineer and installer As-Built Plan BM = 100.00 HR = 2.05 HI = 102.05 SYSTEM ELEVATIONS ROD AS-BLT INVERT DESIGN INVERT ELEVATION ELEV ELEV Benchmark Building Sewer OUT 95.75 Septic Tank IN 5.35 96.82 95.40 Septic Tank OUT 5.65 96.52 95.15 Pump Chamber IN 95.10 Pump Chamber OUT 5.55 96.78 94.95 Distribution Box IN 4.26 97.91 97.35 Distribution Box OUT 4.46 97.71 97.18 Lateral 1 BEGINNING 4.49 97.23 97.10 Lateral 1 END 4.72 97.00 96.85 Lateral 2 BEGINNING 4.43 97.29 97.10 Lateral 2 END 4.70 97.02 96.85 Lateral 3 BEGINNING 4.52 97.20 97.10 Lateral 3 END 4.77 96.95 96.85 Lateral 4 BEGINNING 4.56 97.16 97.10 Lateral 4 END 4.78 96.97 96.85 SKETCH PLAN 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