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Home My WebLink AboutConstruction Notes - Septic Full Repair - Consultant Review - 288 FOSTER STREET 11/7/2022 North Andover Health Department Community and Economic Development Division ONSITE WASTEWATER SYSTEM CONSTRUCTION NOTES LOCATION INFORMATION ADDRESS: 288 Foster Street MAP: 104.D LOT: 0068 INSTALLER: Chad Jablonski – 978-360-9358 DESIGNER: Vladimir Nemchenok / Bill Dufresne – 978-475-3555 PLAN DATE: 10.08.2021 BOH APPROVAL DATE ON PLAN: 12.06.2021 INSPECTIONS TANK INSPECTION: 6.14.2022 - S. Casey DATE OF BED BOTTOM INSPECTION: 6.28.2022 – S. Casey DATE OF FINAL CONSTRUCTION INSPECTION: 7/29/22 – D. Ottenheimer DATE OF FINAL GRADE INSPECTION: 8/23/2022 SITE CONDITIONS Contractor reports any changes to design plan Existing septic tank properly abandoned, if present Internal plumbing all to one building sewer Topography not appreciably altered Comments: 7/29/22 – Existing cast iron building sewer pipe remains in place for most of the length to preserve vegetation in front of house. D. Ottenheimer SEPTIC TANK Building sewer in continuous grade, on compacted firm base Cleanouts per plan Bottom of tank hole has 6” stone base Tank size and loading per plan Monolithic tank construction If monolithic, water tightness of tank has been achieved by visual testing If 2-piece, water tightness of tank has been achieved by water / vacuum test (circle one) Inlet tee installed, centered under access port Outlet tee installed, centered under access port Effluent filter installed If effluent filter, riser to finished grade over filter Riser with cover to within 6” of finish grade installed over one access port Manhole and riser minimum ___ inch diameter Pipe penetrations appear watertight using rubber boot on inlet and hydraulic cement on outlet Comments: 6.14.2022 @ 12:30 pm Tank and pump chamber good to go, >6” across both - S. Casey 7/29/22 – Outlet tee centered well inside of outlet opening however the filter is accessible and was demonstrated to be able to be removed. Reminded installer of need for manhole cover to finished grade over effluent filter. D. Ottenheimer 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 Drain hole in pressure line __” cover at final grade installed over pump access port Water tightness of tank has been achieved by Visual or watertightness testing Neoprene boots around inlet & outlet Comments: 7/29/22 – Contractor installed o.5 hp pump instead of 0.4 hp pump specified on design plan, same model. Pump is adequate however is considerable force of water at distribution box. Reminded installer of need for manhole cover to finished grade over pump. D. Ottenheimer CONTROL PANEL Alarm & Pump are on separate circuits Visual & audible alarm works as intended Location of control panel: Front wall of house Comments: DISTRIBUTION-BOX Installed on stable stone base H-20 D-Box Inlet baffle Hydraulic cement around inlet & outlets Even distribution observed Schedule 40 PVC Pipe Comments: 7/29/22 – Effluent leaking out of top of d-box when pumped turned on, contractor to install gasket to prevent this from occurring. D. Ottenheimer SOIL ABSORPTION SYSTEM (General) Bottom of SAS excavated down to specified soil layer, as provided on plan Size of SAS excavated as per plan Sand installed, if specified on plan Sand displays few fines when handled 40 Mil HDPE barrier installed, if specified on design plan Laterals installed and ends capped or connected to header (and vented if impervious material above) Retaining wall material, location and height if specified on plan Comments: 6.28.2022 @ 12:30 pm – no pass wrong size (58 x 25), depth good, will meet designer on size later today 6.29.2022 Field Size 62-63’ long bed bottom verified yesterday by designer and S.Casey. FINAL GRADE Final cover as per plan Loamed Seeded Cover per plan Comments: 08/23/2022 cover to grade, hydroseeded noted S.Casey DOCUMENTS NEEDED Certification of Installation Form submitted by designer and signed and dated by designer and installer As-Built Plan by designer BM = 100.00 HR = 3.28 HI = 103.28 SYSTEM ELEVATIONS ROD AS-BLT INVERT DESIGN INVERT ELEVATION ELEV ELEV Benchmark Building Sewer OUT 97.50 Septic Tank IN 5.75 97.20 97.25 Septic Tank OUT 6.01 96.94 97.00 Pump Chamber IN 6.11 96.84 96.95 Pump Chamber OUT Distribution Box IN 3.75 99.20 99.10 Distribution Box OUT 3.89 99.06 98.93 Lateral 1 BEGINNING 3.95 99.00 98.85 Lateral 1 END 4.24 98.71 98.60 Lateral 2 BEGINNING 3.95 99.00 98.85 Lateral 2 END 4.23 98.72 98.60 Lateral 3 BEGINNING 3.97 98.98 98.85 Lateral 3 END 4.23 98.72 98.60 SKETCH PLAN