HomeMy WebLinkAboutMiscellaneous - 185 BRIDGES LANE 11/14/2017
North Andover Health Department
Community and Economic Development Division
ONSITE WASTEWATER SYSTEM CONSTRUCTION NOTES
LOCATION INFORMATION
ADDRESS: 185 Bridges Lane MAP: LOT:
INSTALLER: Bateson Enterprises
DESIGNER:
PLAN DATE:
BOH APPROVAL DATE ON PLAN:
Component Repair: D-Box – Pipe to Tank Inspection November 9, 2017 –
Michele Grant
INSPECTIONS
TANK INSPECTION:
DATE OF BED BOTTOM INSPECTION:
DATE OF FINAL CONSTRUCTION INSPECTION:
DATE OF FINAL GRADE INSPECTION:
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
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-10 loading
Monolithic tank construction
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)
_____ inch cover to within 6” of finish grade
installed over one access port
Hydraulic cement around inlet & outlet
Comments:
PUMP CHAMBER
Bottom of tank hole has 6" stone base
Weep hole plugged
1500 gallon Pump Chamber installed
H-10 loading
Monolithic tank construction
Inlet tee installed, centered under access port
Pump(s) installed on stable base
Alarm float working
Pump On/Off floats working
Separate on/off floats
Drain hole in pressure line
_____ cover at final grade installed over pump
access port
Water tightness of tank has been achieved by
_______ testing
Hydraulic cement around inlet & outlet
Comments:
CONTROL PANEL
Alarm & Pump are on separate circuits
Alarm sounds when float is tripped
Location of control panel: basement
Alarm signal located inside: basement
Comments:
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: Also Replaced a pipe and put in a “T”
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
Retaining wall (boulder / concrete / timber/ block)
Final cover as per plan
Comments:
SOIL ABSORPTION SYSTEM (Gravel-less Chambers)
Brand and Model of Chamber: Standard Quick
4 Infiltrator Chambers
Number of chambers per row:
Number of rows (trenches):
Comments: Total Chambers = ____
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 = ______
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
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