HomeMy WebLinkAbout- Consultant Review - 30 MILL ROAD 6/6/2024 North Andover Health Department
Community and Economic Development Division
ONSITE WASTEWATER SYSTEM CONSTRUCTION NOTES
LOCATION INFORMATION
ADDRESS: 30 Mill Road MAP: 98B LOT: 8
INSTALLER: David Chandler, Sewerworks
DESIGNER: John Sullivan
PLAN DATE: 7/19/23
BOH APPROVAL DATE ON PLAN: August 2023
INSPECTIONS
TANK INSPECTION:
DATE OF BED BOTTOM INSPECTION.-
DATE OF FINAL CONSTRUCTION INSPECTION: 10/3/23
DATE OF FINAL GRADE INSPECTION:6/4/2024
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: 10/3/23 — Water line re-routed around leach area, building sewer to
be raised, temporary construction benchmark to be confirmed by designer.
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 / 2-piece
(circle one)
❑ 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
❑ Gas baffle / effluent filter installed (circle one)
❑ 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 boots / hydraulic cement (circle one)
Comments: 10/3/23 — Existing tank re-used. (3) risers with manholes installed.
Effluent filter installed. Possible weeping at outlet penetration. D. Ottenheimer
line
DISTRIBUTION-BOX
® Installed on stable stone base
® H-20 D-Box
® Inlet tee (if pumped or >0.08'/foot)
❑ Hydraulic cement around inlet & outlets
® Even distribution observed
® Schedule 40 PVC Pipe
Comments: 10/3/23 — Contractor to place hydraulic cement at pipe penetrations.
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 connected to
header
❑ Retaining wall material, location and height if
specified on plan
Comments:
FINAL GRADE
® Final cover as per plan
® Loamed
® Seeded
® Cover per plan
Comments:
DOCUMENTS NEEDED
® Certification of Installation Form submitted
by designer and signed and dated by
designer and installer
® As-Built Plan by designer
BM = 87.37
HR = 2.12
HI = 89.49
SYSTEM ELEVATIONS
ROD AS-BLT INVERT DESIGN INVERT
ELEVATION ELEV ELEV
Benchmark
Building Sewer OUT
Septic Tank IN
Septic Tank OUT
Pump Chamber IN
Pump Chamber OUT
Distribution Box IN 3.98 Top 85.18 85.10
Distribution Box OUT 4.19 Top 84.97 84.93
Lateral 1 BEGINNING 4.24 Top 84.92 84.90
Lateral 1 END 4.50 Top 84.66 84.65
Lateral 2 BEGINNING
Lateral 2 END
Lateral 3 BEGINNING
Lateral 3 END
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