HomeMy WebLinkAboutConstruction Notes - Consultant Review - 0 BOXFORD STREET 12/18/2021
North Andover Health Department
Community and Economic Development Division
ONSITE WASTEWATER SYSTEM CONSTRUCTION NOTES
LOCATION INFORMATION
ADDRESS: 734 Boxford Street MAP: 105.A LOT: 24
INSTALLER: Robert Innis – 978-663-6006 permit # 59892 vp, William “Tom”
Sawyer – 603-895-0111
DESIGNER: John Morin – 978-777-8586, Ben Osgood 978-777-8586
PLAN DATE: final revision date – 03.31.2021
BOH APPROVAL DATE ON PLAN: 04.14.2021
INSPECTIONS
TANK INSPECTION: 11.09.2021
DATE OF BED BOTTOM INSPECTION: 11.15.2021 & 11.16.2021 – S. Casey
DATE OF FINAL CONSTRUCTION INSPECTION: 11-23-21- Mill River
DATE OF FINAL GRADE INSPECTION: 12.16.2021 & 12.18.2021 S. Casey
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)
_____ inch cover to within 6” of finish grade
installed over one access port
Boot on inlet Hydraulic cement on outlet
Comments: 10.18.2021 S. Casey – 6” + stone. 11-23-21 – Two compartment
tank provided. Manhole to within 6” of finished grade required D. Ottenheimer
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: 11-23-21 – Riser to within 6” of finished grade required D.
Ottenheimer
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
Elevations of laterals and chambers installed as on
approved plan
Retaining wall (boulder / concrete / timber/ block)
Final cover as per plan
Comments:
11.15.2021 – S. Casey 72x22’ Noted large stones towards foundation – removed
and scarified bed bottom.
FINAL GRADE
Loamed
Seeded
Cover per plan – 2 covers to grade
Comments: Riser on dbox noted 12.6.2021 tank covers also raised – see images
will call for final grade
DOCUMENTS NEEDED 12.08.2021
Certification of Installation Form submitted
By engineer and signed and dated by
Engineer and installer
As-Built Plan
BM = 120.16
HR = 6.33
HI = 126.49
SYSTEM ELEVATIONS
ROD AS-BLT INVERT DESIGN INVERT
ELEVATION ELEV ELEV
Building Sewer OUT 3.96 122.20 122.20
Septic Tank IN 4.19 121.97 121.90
Septic Tank OUT 4.42 121.74 121.75
Distribution Box IN 4.45 121.71 121.71
Distribution Box OUT 4.59 121.57 121.54
Lateral 1 BEG 4.83 121.33 121.28
Lateral 2 BEG 4.82 121.34 121.28
11-23-21 – Confirmed beginning and end of Enviro-Septic leach field was level
D. Ottenheimer
SKETCH PLAN