HomeMy WebLinkAboutConstruction Notes - Consultant Review - 1230 SALEM STREET 9/8/2022 SETTLED 6ya •
North Andover Health Department
(ommunity and Economic Development Division
ONSITE WASTEWATER SYSTEM CONSTRUCTION NOTES
LOCATION INFORMATION
ADDRESS: 1230 Salem St MAP: 106.A LOT: 0041
INSTALLER: Chad Jablonski — permit # 59749
DESIGNER: Erich Nitzsche, P.E. — 978-578-1352
PLAN DATE: final revision date — 05.16.2017
BOH APPROVAL DATE ON PLAN: - 08.22.2017, plan extension date
08.22.2021
INSPECTIONS
TANK INSPECTION: 10.25.2021
DATE OF BED BOTTOM INSPECTION: 10/18/2021, re-inspection 10.19.2021
DATE OF FINAL CONSTRUCTION INSPECTION: 11-13-21
DATE OF FINAL GRADE INSPECTION:9/8/2022 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
Comments: 11-13-21 — Bend in building sewer pipe just outside the dwelling.
Confirmed presence of cleanout inside basement wall so no need for a cleanout
outside. Benchmark set in tree, need memo from design engineer to confirm it is
accurate to use this benchmark D. Ottenheimer
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-20 loading
® Monolithic tank construction
® Watertightness of tank has been achieved by
visual testing
® Inlet tee installed, centered under access port
® Outlet tee installed, centered under access port
(effluent filter)
❑ inch cover to within 6" of finish grade
installed over one access port
® Boots on inlet & outlet
Comments: S. Casey 10.25.2021 — 6" + stone in hole, tank location moved to
side of house (design called for front of house) Chad Stated engineer ok— verify
11-13-21 —Tank provided is a 2-compartment tank, baffle wall has tees. Tank
needs 9" of cover and a manhole to finished grade over the effluent filter. D.
Ottenheimer
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: 11-13-21 — Risers on d-box needed to bring cover within 6" of
finished grade. D. Ottenheimer
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
® Elevations of laterals and chambers installed as on
approved plan
❑ Retaining wall (boulder/ concrete /timber/ block)
❑ Final cover as per plan
Comments: 10.18.2021 S. Casey —fail large rocks, boulders encroaching on
field. 10.19.2021 S.Casey — boulder broken up, 1 overdig only ok, one pocket Ig
stones in bed face noted 18' from fare side of field removed. Engineer to return
to site today as well.
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 = 114.00
FIR = 1.65
HI = 115.65
SYSTEM ELEVATIONS
ROD AS-BLT INVERT DESIGN INVERT
ELEVATION ELEV ELEV
Benchmark
Building Sewer OUT 6.39 108.93 110.19
Septic Tank IN 6.75 108.57 109.92
Septic Tank OUT 7.05 108.27 109.67
Distribution Box IN 7.95 107.37 107.02
Distribution Box OUT 8.14 107.18 106.85
Lateral 1 BEG 8.22 107.10 106.80
Lateral 1 END 8.63 106.69 106.50
Lateral 2 BEG 8.14 107.18 106.82
Lateral 2 END 8.59 106.73 106.50
Lateral 3 BEG 8.26 107.06 106.80
Lateral 3 END 8.63 106.69 106.50
SKETCH PLAN
11-13-21 - Confirmed soil absorption system is > 100' from wetland flag
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