HomeMy WebLinkAboutConstruction Notes - DWC Repair outlet line and Dbox - Consultant Review - 151 OLYMPIC LANE 4/1/2021
North Andover Health Department
Community and Economic Development Division
ONSITE WASTEWATER SYSTEM CONSTRUCTION NOTES
LOCATION INFORMATION
ADDRESS: 151 Olympic Lane MAP: 106.B LOT: 0133
INSTALLER: Robert Herrick – Wind River 774-545-6229
DESIGNER:
PLAN DATE:
BOH APPROVAL DATE ON PLAN:
INSPECTIONS
Outlet Line 3/25/2021 S. Casey
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: Installer noted there was “negative” pitch from d-box to pipe out of
box. Tried to raise box slightly to fix this. Images attached. Large rocks located
under box were removed, couple feet of stone installed instead of 6 inches.
Further repairs needed to address and properly repair dbox, water still flowing
back into d-box at least 1 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
Observed even distribution 3/31/2021 S.
Casey
Speed levelers provided (not required)
Schedule 40 PVC Pipe
Comments:
Pipes leaning box dug up roughly 5-6 feet, box raised a couple inches to fix pitch.
Water no longer flows back into box. Pitch into box less steep than before. Flow
looks good, even distribution.