HomeMy WebLinkAboutConstruction Notes - Consultant Review - 487 WINTER STREET 9/4/2019
North Andover Health Department
Community and Economic Development Division
ONSITE WASTEWATER SYSTEM CONSTRUCTION NOTES
LOCATION INFORMATION
ADDRESS: 487 Winter Street MAP: 104.A LOT: 0071
INSTALLER: Todd Bateson 978-815-2703
DESIGNER: Joe Serwalka 978-314-8731
PLAN DATE: 6/5/2019, revision 6/10/2019, 6/21/2019, 7/3/2019
BOH APPROVAL DATE ON PLAN: 7/10/2019
INSPECTIONS
TANK INSPECTION: 7/29/2019
DATE OF BED BOTTOM INSPECTION:
DATE OF FINAL CONSTRUCTION INSPECTION: 8/5/19
DATE OF FINAL GRADE INSPECTION: 9/4/2019
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
(effluent filter)
24 inch cover to within 6” of finish grade
installed over one access port
Hydraulic cement around inlet & outlet
Comments: 8/5/19 – tanks with boots, no hydraulic cement needed
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
Hydraulic cement around inlet & outlet boots
Comments: 8/5/19 – tanks with boots, no hydraulic cement needed
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:
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: 29’x40’ 7/29/2019
SOIL ABSORPTION SYSTEM (Gravel-less Chambers)
Brand and Model of Chamber: Standard Quick
4 Low Profile Infiltrator Chambers
Number of chambers per row: 7
Number of rows (trenches): 5
Comments: Total Chambers = 35
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 = 100.
HR = 0.97
HI = 100.97
SYSTEM ELEVATIONS
ROD AS-BLT INVERT DESIGN INVERT
ELEVATION ELEV ELEV
Building Sewer OUT 6.02 94.62 94.67
Septic Tank IN 6.28 94.36 93.88
Septic Tank OUT 6.69 93.95 93.53
Pump Chamber IN 6.77 93.87 93.50
Pump Chamber OUT 7.32 93.48 93.30
Distribution Box IN 4.10 96.70 96.60
Distribution Box OUT 4.12 96.52 96.43
Lateral 1 TOP 4.23 96.41 96.38
SKETCH PLAN