HomeMy WebLinkAboutMiscellaneous - 49 WINDSOR LANE 7/10/2014 i
I
North Andover Health Department
Community Development Division
ONSITE WASTEWATER SYSTEM CONSTRUCTION NOTES
LOCATION INFORMATION
ADDRESS: 49 Windsor Lane MAP: 106D LOT: 65
INSTALLER: Todd Bateson
DESIGNER: Merrimack Engineering
PLAN DATE: 5/8/14, rev. 6/16/14, 6/17/14
BOH APPROVAL DATE ON PLAN: 6/23/14
INSPECTIONS
TANK INSPECTION: 7/10/14
DATE OF BED BOTTOM INSPECTION: 7/9/14
DATE OF FINAL CONSTRUCTION INSPECTION: 7/16/14
DATE OF FINAL GRADE INSPECTION: - 2
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:
SEPTIC TANK
X Building sewer in continuous grade, on
compacted firm base
❑ Cleanouts per plan
X Bottom of tank hole has 6" stone base
X Weep hole plugged
X 1500 gallon tank has been installed
H-10 loading
X Monolithic tank construction
® Water tightness of tank has been achieved by
visual testing
® Inlet tee installed, centered under access port
1
1
® Outlet tee installed, centered under access pork
(gas baffle/eff luent filter)
X inch cover to within 6" of finish grade
installed over one access port
X Hydraulic cement around inlet & outlet
Comments: MRC —Tank had rubber boots cast in place so no hydraulic cement
needed
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
i
Comments:
SOIL ABSORPTION SYSTEM (General)
X Bottom of SAS excavated down to C soil layer,
as provided on plan
X Size of SAS excavated as per plan
X 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
❑ Retaining wall (boulder/ concrete /timber/ block)
❑ Final cover as per plan
Comments: very deep hole, soil changed in the hole, had to dig 8'deep, 60'Lx25',
50' from corner of the house
FINAL GRADE
Loamed
Seeded
Cover per plan
Comments:
DOCUMENTS NEEDED
a 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
Lateral 6 TOP
Lateral 6 INVERT
Top of Chamber
Bottom of Bed/Chamber�
MRC — all components built to proper elevation
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
Waterline 10 10 to,
Private drinking well 75 loo, 50
Irrigation well 75 100
Surface Water 25 50
Bordering Vegetated Wetland
Salt Marsh, Inland/Coastal Bank3 75 100
Wetlands bordering surface
water supply or trio. (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)
2 100 feet is a minimum acceptable distance and no variance is allowed for a lesser distance(NA 5.02).
'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
1
i
i
1