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Home My WebLink AboutConstruction Notes - Consultant Review - 740 FOREST STREET 8/12/2021 � �tiT'CLED i6q� • North Andover Health Department Community and Economic Development Division ONSITE WASTEWATER SYSTEM CONSTRUCTION NOTES LOCATION INFORMATION ADDRESS: 740 Forest Street MAP: 105.D LOT: 0034 INSTALLER: Mark Finn - 978-857-5161 permit # 59011 vp DESIGNER: John Morin — Morin-Cameron Group Inc 978-777-8586 PLAN DATE: 12.18.2020, revised 03.17.2021 BOH APPROVAL DATE ON PLAN: 04.02.2024 INSPECTIONS TANK INSPECTION: tank existing see attached letter DATE OF BED BOTTOM INSPECTION-4/20/2021 , 04/23/2021 DATE OF FINAL CONSTRUCTION INSPECTION: 5/24/21 DATE OF FINAL GRADE INSPECTION:6/7/2021 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: 5/24/21 — D. Ottenheimer: Laundry waste pipe was intercepted and tied into the main building sewer pipe just outside the septic tank. Contractor reports water service line does not ru where shown on the design plan and was not encountered during installation. Contractor was informed of plan requirement to have existing septic tank examined by a System Inspector to determine if it can be re-used or not. 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 (gas baffle) ❑ inch cover to within 6" of finish grade installed over one access port ❑ Hydraulic cement around inlet & outlet Comments: 5/24/21 — D. Ottenheimer: If current tank is to remain, required installation of riser to grade over inlet, examination of tank by System Inspector, and hydraulic cement around outlet pipe 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 - Monday 4/26 ® 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: S. Casey — 4.20.2021 LxW of bottom of bed @ 53x24, needs to be 56x26. Rocks/tree branches/limbs in bottom of bed. Hole needs to be fixed for inspection. John Morin verified enginee had been out. S. Casey — 04.23.2021 — 56 '12' x 27', rocks pulled, Will on site. Sand coming Monday. 5/24/21 — D. Ottenheimer: SAS authorized to be backfilled FINAL GRADE 6.7.2021 S. Casey ® Loamed ® Seeded ❑ Cover per plan Comments: Noted rock wall on site — not on plan. John Morin noted not a retaining wall. DOCUMENTS NEEDED ® Certification of Installation Form submitted By engineer and signed and dated by Engineer and installer ® As-Built Plan BM = 97.00 HR = _2.88 HI = 99.88 SYSTEM ELEVATIONS ROD AS-BLT INVERT DESIGN INVERT ELEVATION ELEV ELEV Building Sewer OUT Septic Tank IN Septic Tank OUT Distribution Box IN 3.96 95.59 95.47 Distribution Box OUT 4.15 95.40 95.30 Lateral 1 TOP 4.36 95.19 95.22 Lateral 1 INVERT 4.56 94.99 95.00 Lateral 2 TOP 4.35 95.20 95.22 Lateral 2 INVERT 4.58 95.01 95.00 Lateral 3 TOP 4.35 95.20 95.22 Lateral 3 INVERT 4.58 94.97 95.00 Lateral 4 TOP 4.36 95.19 95.22 Lateral 4 INVERT 4.58 94.97 95.00 NORTH ANDOVER Massachusetts Toni Wolfenden <twolfenden@northandoverma.gov> Final Construction Inspection - 740 Forest Street 3 messages Daniel Ottenheimer<dano@millriverconsulting.com> Mon, May 24, 2021 at 5:08 PM To: 'Brian Lagrasse (blagrasse@northandoverma.gov)"<baagrasse@northandoverma.gov>, Stephen Casey <scasey@northandoverma.gov>, "Toni Wolfenden (twolfenden@northandoverma.gov)" <twolfenden@northandoverma.gov> Brian, Steve, Toni - The final construction inspection form is attached to this email. The soil absorption system and distribution box construction was found to be acceptable and the installer was authorized to backfill around that area. Several issues were noted around the septic tank, as follows: • The design plan calls for System Inspector to examine the existing tank to determine if it is acceptable to remain in use or if it needs to be replaced. This was never completed and the installer just assumed the existing tank could be re- used. I explained to the installer that a System Inspector would need to make that determination. He reports he will make that happen. • If the current tank is to remain in use there are several items in need of attention: o A manhole to grade is needed over the inlet side of the tank because there are two pipes tied in together outside the tank and this is a risk point for clogging o The pipe exiting the tank did not appear to be a fully watertight connection with the tank and will need to be secured with hydraulic cement Additionally, the water line was reported to not run in the location shown on the design plan. I have let the engineer know to depict the water line location correctly on the as-built and to depict the two building sewer pipes on the as-built plan, if they are not already shown. I know Steve is out for the week so I have instructed the installer to keep me apprised. Best, Dan Daniel Ottenheimer, PE President m f MILL RIVER CONSULTING Creative Solutems for Laid DevOopment 6 Sargent Street Gloucester, MA 01930-2719 Phone: 978-282-0014 ext.802 www.miliriverconsulting.com Member: National Society of Professional Engineers, New England Water Environment Association, Yankee Onsite Wastewater Association, Massachusetts Environmental Health Association ,i Construction Notes -740 Forest Street.doc 375K Brian LaGrasse <blagrasse@northandoverma.gov> Tue, May 25, 2021 at 8:17 AM To: Daniel Ottenheimer<dano@millriverconsulting.com> Cc: Stephen Casey<scasey@northandoverma.gov>, "Toni Wolfenden (tolfenden@northandoverma.gov)" <tolfenden@northandoverma.gov> Thanks Dan [Quoted text hidden] Brian J. LaGrasse, CEHT Director of Public Health Town of North Andover 120 Main Street North Andover, MA 01845 Phone 978.688.9540 Fax 978.688.8476 Email blagrasse@northandoverma.gov Web www.northandoverma.gov Toni Wolfenden <tolfenden@northandoverma.gov> Tue, May 25, 2021 at 8:17 AM To: Brian LaGrasse <blagrasse@northandoverma.gov> Cc: Daniel Ottenheimer<dano@millriverconsulting.com>, Stephen Casey<scasey@northandoverma.gov> received. Thank you, Toni K. Wolfenden Health Department Assistant 978-688-9540 (;acid Jrnage002.jpg@O1 CD02A1.85A49B40 [Quoted text hidden] image001.jpg 4K R. JENKINS & SONS Title V Inspections / Mini Backhoe Services 58 PLEASANT ST. ROWLEY MA. 01969 978-314-0503 To whom it may concern, The Se,t;c tank located at ? ^ rest, Street North Anal ., J r 4v Forest, t ItiGr�h r�iiu�JJc Eii good condition with no evidence of leakage. Tank size is 1,500 in volume (10'x5'x5'dp.) It is 4' below grade with risers to grade,24'' Dia. Plastic domed Covers are screwed down for safety. Tank is a H2O (heavy duty) tank Inlet baffle in good condition, outlet tee is new . Liquid was level with bottom of outlet invert. 'e7 e Ron Jenkins qeQ SI4268 �'` 0�1 OF EPP� Y d, �� - � - �.-=