HomeMy WebLinkAbout- Consultant Review - 62 BANNAN DRIVE 12/13/2023
North Andover Health Department
Community and Economic Development Division
ONSITE WASTEWATER SYSTEM CONSTRUCTION NOTES
LOCATION INFORMATION
ADDRESS: 62 Bannan Drive MAP: 38 LOT: 112
INSTALLER: Chad Jablonski – 978-360-9358
DESIGNER: Bill Dufense – 978-502-6206 or 978-475-3555 x 20
PLAN DATE: 06.03.2022
BOH APPROVAL DATE ON PLAN: 11.01.2022
INSPECTIONS
TANK INSPECTION:
DATE OF BED BOTTOM INSPECTION: 08.02.2023
DATE OF FINAL CONSTRUCTION INSPECTION:
DATE OF FINAL GRADE INSPECTION:
SITE CONDITIONS
Contractor reports any changes to design plan
Existing septic tank properly abandoned, if
present
Internal plumbing all to one building sewer
Comments: Tank Shifted – B. LaGrasse
SEPTIC TANK
Building sewer in continuous grade, on
compacted firm base
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
Inlet tee installed, centered under access port
Outlet tee installed, centered under access port
Gas baffle / effluent filter installed (circle one)
Riser with cover to within 6” of finish grade
installed over one access port
Manhole and riser minimum _20__ inch
diameter
Pipe penetrations appear watertight using
rubber boots / hydraulic cement (circle one)
Comments:
DISTRIBUTION-BOX
Installed on stable stone base
H-20 D-Box
Hydraulic cement around inlet & outlets
Even distribution observed
Schedule 40 PVC Pipe
Comments:
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
Laterals installed and ends capped or
connected to header (and vented if impervious
material above)
Comments:
Bed bottom needs to be done in stages due to site constraints and dewatering
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 =
HR =
HI =
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
Distribution Box OUT
Lateral 1 BEGINNING
Lateral 1 END
Lateral 2 BEGINNING
Lateral 2 END
Lateral 3 BEGINNING
Lateral 3 END
Lateral 4 BEGINNING
Lateral 4 END
Lateral 5 BEGINNING
Lateral 5 END
Lateral 6 BEGINNING
Lateral 6 END
Top of Chamber
Bottom of Bed/Chamber
SKETCH PLAN
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 --
1
Waterline 10 10 10
2
Private drinking well 75 100 50
Irrigation well 75 100
Surface Water 25 50
Bordering Vegetated Wetland ,
3
Salt Marsh, Inland / Coastal Bank 75 100
Wetlands bordering surface
water supply or trib. (in Watershed) 150 150
Trib. to surface water supply 325 325
Public well 400 400
Interim Wellhead Prot. Area
Reservoirs 400 400
Drains (wat. supply/trib.) 50 100
Drains (intercept g.w.) 25 50
Drains (Other) Foundation 10 (5) 20 (10)
Drywells 20 25
1
Suction line 222(2)
2
100 feet is a minimum acceptable distance and no variance is allowed for a lesser distance (NA 5.02).
3
As defined in 310 CMR 10.55, 10.32, 10.54, and 10.30, respectively, pursuant to 15.211(3), also by NA
wetland bylaws