HomeMy WebLinkAbout- Consultant Review - 101 FOSTER STREET 10/18/2021
North Andover Health Department
Community and Economic Development Division
ONSITE WASTEWATER SYSTEM CONSTRUCTION NOTES
LOCATION INFORMATION
ADDRESS: 101 Foster Street MAP: 104.D LOT: 0037
INSTALLER: James Boracezk – 978-479-5236
DESIGNER: Benjamin Osgood Jr. – 978-435-1324, bosgood@rangereng.com
PLAN DATE: July 24, 2020
BOH APPROVAL DATE ON PLAN: revised August 24, 2020
INSPECTIONS
TANK INSPECTION: 12.21.2020 S. Casey – 12:30pm pump and tank
DATE OF BED BOTTOM INSPECTION:
DATE OF FINAL CONSTRUCTION INSPECTION: 12.31.2020 D. Gallant
DATE OF FINAL GRADE INSPECTION: 1/13/2021
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: 12/31/20 – Liberty 4/10hp pump installed instead of Hydromatic
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
(effluent filter)
24 inch cover to within 6” of finish grade
installed over one access port
Rubber boots installed around inlet & outlet
Comments:
PUMP CHAMBER
Bottom of tank hole has 6" stone base
Weep hole plugged
1000 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
24” cover at final grade installed over pump
access port
Water tightness of tank has been achieved by
visual testing
Rubber boots installed around inlet & outlet
Comments: 12/31/20 – Liberty 4/10hp pump installed instead of Hydromatic
CONTROL PANEL
Alarm & Pump are on separate circuits
Alarm sounds when float is tripped
Location of control panel: side of house
Alarm signal located inside: side of house
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:
SOIL ABSORPTION SYSTEM (General)
Bottom of SAS excavated down to C soil layer,
as provided on plan – hit fill on side opposite of
pool, removed to natural soil
Size of SAS excavated as per plan 25x50’
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: large rock removed from bottom while on site, field expanded to
meet 50x25’ requirment
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 = 108.60
HR = 2.26__
HI = 110.86_
SYSTEM ELEVATIONS
ROD AS-BLT INVERT DESIGN INVERT
ELEVATION ELEV ELEV
Benchmark 2.26 108.60 108.60
Building Sewer OUT
Septic Tank IN 10.25 100.28 99.60
Septic Tank OUT 10.50 100.03 99.35
Pump Chamber IN 10.55 99.98 99.30
Pump Chamber OUT 10.40 100.13 99.05
Distribution Box IN 5.06 105.47 105.47
Distribution Box OUT 5.20 105.33 105.30
Lateral 1 BEGINNING 5.24 105.29 105.20
Lateral 1 END 5.57 104.96 105.00
Lateral 2 BEGINNING 5.30 105.23 105.20
Lateral 2 END 5.59 104.94 105.00
Lateral 3 BEGINNING 5.30 105.23 105.20
Lateral 3 END 5.59 104.94 105.50
12/31/20 – Building Sewer Out not able to be measured due to existing fill. Pitch into
septic tank visually confirmed. Distance to wetlands confirmed to be >100’