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Home My WebLink AboutMiscellaneous - 11 PURITAN AVENUE 10/26/2017 North Andover Wealth Department Community and Economic Development Division ONSITE WASTEWATER SYSTEM CONSTRUCTION NOTES LOCATION INFORMATION ADDRESS: 11 Puritan Ave MAP: 107 LOT: 0132 INSTALLER: James Kellett DESIGNER: Hayes Engineering — Gordie Rogerson PLAN DATE: August 3, 2017 BOH APPROVAL DATE ON PLAN: August 24, 2017 INSPECTIONS TANK INSPECTION: DATE OF BED BOTTOM INSPECTION: DATE OF FINAL CONSTRUCTION INSPECTION: 9/29/2017 DATE OF FINAL GRADE INSPECTION:10/12/2017 SITE CONDITIONS ® Contractor reports any changes to design plan N/A Existing septic tank properly abandoned N/A Internal plumbing all to one building sewer ® Topography not appreciably altered Comments: Existing leach trenches to remain in use 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 t ❑ Water tightness of tank has been achieved by visual testing ❑ Inlet tee installed, centered under access port ❑ Outlet tee installed, centered under access port (gas baffle/effluent filter) ❑ inch cover to within 6" of finish grade installed over one access port ❑ Hydraulic cement around inlet & outlet Comments: Existing Septic tank to remain in use PUMP CHAMBER ❑ Bottom of tank hole has 6" stone base ❑ Weep hole plugged ❑ 1500 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 ❑ cover at final grade installed over pump access port ❑ Watertightness of tank has been achieved by testing ❑ Hydraulic cement around inlet & outlet Comments: 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 N/A Inlet tee (if pumped or >0.08'/foot) Hydraulic cement around inlet & outlets Observed even distribution Speed levelers provided (not required) Z Schedule 40 PVC Pipe Comments: New D-Box Installed 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 N/A 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) F-1 Final cover as per plan Comments: Sludge in the existing (2) leach trenches have been removed and remain in use. (2) new additional leach trenches have been installed in the original reserve area and are also in use. There are currently (4) leach trenches being used for the existing dwelling The new leach trenches were set at the same elevation as the existing leach trenches which are about 0.09-0.15" low compared to the design plan elevation. SOIL ABSORPTION SYSTEM (Gravel-less Chambers) M Brand and Model of Chamber: Standard Quick 4 Infiltrator Chambers F-1 Number of chambers per row: F-1 Number of rows (trenches): Comments-, Total Chambers FINAL GRADE Loamed Seeded Z 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 = HR = HI SYSTEM ELEVATIONS _-------- —.__.. _.._.. ROD ------------- ROD AS-BLT INVERT DESIGN INVERT ELEVATION ELEV ELEV Benchmark ITmIT —---------- Buildinq Sewer OUT —--- ---------- Septic Tank IN Septic Tank OUT Pump Chamber IN,—------- -------------- Pump Chamber OUT ------------ Distribution Box IN Distribution Box OUT Lateral 1 TOP Lateral 1 INVERT Lateral 2 TOP Lateral 2 INVERT Lateral 3 TOP Lateral 3 INVERT Lateral 4 TOP Lateral 4 INVERT Lateral 5 TOP Lateral 5 INVERT Lateral 6 TOP Lateral 6 INVERT ---------------- ............... —--------- Top of Chamber Bottom of Bed/Chamber SKETCH PLAN BM = 170.04 HR = 5.37 HI = 175.41 SYSTEM ELEVATIONS ROD AS-BLT INVERT DESIGN INVERT ELEVATION ELEV ELEV Benchmark Building Sewer OUT Septic Tank IN ---- Septic Tank OUT 6.22 168.64 ---- Distribution Box IN 6.50 168.56 168.58 Distribution Box OUT 6.66 168.40 168.41 Lateral 1 TOP 6.83 / 7.10 168.23 / 167.96 168.32 168.08 Lateral I INVERT Lateral 2 TOP 6.83 / 7.13 168.23 / 167.93 168.321 168.08 Lateral 2 INVERT Lateral 3 TOP 6.83 / 7.13 168.23 / 167.93 168.32 168.08 Lateral 3 INVERT Lateral 4 TOP 6.83 / 7.13 168.231 167.93 168.321 168.08 Bottom of Trench]_____ 9.25 166.2 166.3 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 -- Waterline 10 10 101 Private drinking well 75 1002 50 Irrigation well 75 100 Surface Water 25 50 Bordering Vegetated Welland Salt Marsh,inland/Coastal Bank3 75 100 Wetlands bordering surface water supply or trib. (in Watershed) 150 150 Trib. to surface water supply 325 325 Z Public well 400 400 Interim Wellhead Prot, Area Reservoirs 400 400 Z Drains (wat. supply/trib.) 50 100 Drains (intercept g.w.) 25 50 Drains (Otber) Foundation 10(5) 20(10) Drywells 20 25 1 Suction line 222(2) 2 100 feet is a minirrilarn acceptable distance and no variance is allowed for a lesser distance(NA 5.02). 3 As defined in 310 CMR 10.55, 1032, 10.54,and 10,30,respectively,pursuant to 15.211(3),also by NA wetland bylaws