HomeMy WebLinkAboutMiscellaneous - 45 WELLINGTON WAY 10/18/2017 (2) Forth Andover Health Department
Community and Economic Development Division
ONSITE WASTEWATER SYSTEM CONSTRUCTION NOTES
LOCATION INFORMATION
ADDRESS: 45 Wellington Way Lot 5 MAP: 105,C LOT: 88
INSTALLER: Dave Maynard
DESIGNER: Christiansen and Sergi
PLAN DATE: February 22, 2016
BOH APPROVAL DATE ON PLAN: April 6, 2017
INSPECTIONS
TANK INSPECTION: 9/12/2017
DATE OF BED BOTTOM INSPECTION:9/12/2017
DATE OF FINAL CONSTRUCTION INSPECTION: 9/22/2017
DATE OF FINAL GRADE INSPECTION:10/11/2017
SITE CONDITIONS
® Contractor reports any changes to design plan
N/A Existing septic tank properly abandoned
® Internal plumbing all to one building sewer
® Topography not appreciably altered
Comments: Mill River
SEPTIC TANK
® Building sewer in continuous grade, on
compacted firm base j
N/A 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
® Watertightness of tank has been achieved by
visual testing
® Inlet tee installed, centered under access port
M Outlet tee installed, centered under access port
(gas baffle/effluent filter)
® 24" inch cover to finish grade infinish grade
installed over access port
® Neoprene boots around & outlet
Comments: 9/12/2017 B. LaGrasse 9/22/2017 Mill River
DISTRIBUTION-BOX
® Installed on stable stone base
® H-20 D-Box
❑ Inlet tee (if pumped or >0.08'/foot)
® Hydraulic cement around inlet & outlets
Z Observed even distribution
® Speed levelers provided (not required)
® Schedule 40 PVC Pipe
Comments:
M. Grant
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 if impervious material
above)
® Elevations of laterals and chambers installed as on
approved plan
NIA Retaining wall (boulder/ concrete 1 timber/ block)
❑ Final cover as per plan
Comments: 9112/17 39' x 36' B. LaGrasse
FINAL GRADE
® Loamed
® Seeded
® Cover per plan
Comments:
M. Grant
DOCUMENTS NEEDED
® Certification of Installation Form submitted
By engineer and signed and dated by
Engineer and installer
® As-Built Plan
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 TOP
Lateral 1 INVERT
Lateral 2 TOP
Lateral 2 INVERT
Lateral 3 TOP
Lateral 3 INVERT
Lateral 4 TOP
Lateral 4 INVERT
Lateral 5 TOP
Lateral 5 INVERT x
Lateral 6 TOP
Lateral 6 INVERT
Top of Chamber
Bottom of Bed/Chamber
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 --
® Waterline 10 10 10'
® Private drinking well 75 100, 50
Irrigation well 75 100
® Surface Water 25 50
® Bordering Vegetated Wetland ,
Salt Marsh, Inland/Coastal Banka 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
° Suction line 222(2)
z 100 feet is a minimum acceptable distance and no variance is allowed for a lesser distance(NA 5.02).
s 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