HomeMy WebLinkAboutConstruction Notes - Consultant Review - 218 LACY STREET 10/13/2020 •
North Andover Health Department
Community and Economic Development Division
ONSITE WASTEWATER SYSTEM CONSTRUCTION NOTES
LOCATION INFORMATION
ADDRESS: 218 Lacy Street MAP: 105.0 LOT: 29
INSTALLER: Todd Bateson
DESIGNER: John D. Sullivan (Sullivan Engineering Group, LLC)
PLAN DATE: 7/10/2020
BOH APPROVAL DATE ON PLAN: 9/2/2020
INSPECTIONS
TANK INSPECTION:
DATE OF BED BOTTOM INSPECTION: S. Casey — 9.9.2020 @ 12pm
DATE OF FINAL CONSTRUCTION INSPECTION: 9/15/2020
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: 9/15/20 — Tree removed near distal end of leach field (eastern end),
boulder wall replaced with grading.
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)
® 20" inch cover to within 6" of finish grade
installed over one access port
® Neoprene boots around inlet & outlet
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: 9/15/20 — No inlet tee needed.
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
N/A Retaining wall (boulder/ concrete /timber/ block)
❑ Final cover as per plan
Comments:
S. Casey— Bottom of SAS >18" around bed bottom, Size of SAS 22 x 60, Hit
Boulder Deposit in Bed Bottom
FINAL GRADE
® Loamed
® Seeded
® Cover per plan- to grade
X Inspection Port
Comments: 9/15/20 - Final grade to be inspected during Final Grade Inspection.
9.24.2020 S. Casey Inspection @ 2:30pm
DOCUMENTS NEEDED
® Certification of Installation Form submitted
By engineer and signed and dated by
Engineer and installer
® As-Built Plan
BM = 93.16
H R = 8.46
HI = 101.62
SYSTEM ELEVATIONS
ROD AS-BLT INVERT DESIGN INVERT
ELEVATION ELEV ELEV
Benchmark 8.46 93.16 93.16
Building Sewer OUT 5.33 95.96 96.00
Septic Tank IN 5.65 95.64 95.64
Septic Tank OUT 5.89 95.40 95.39
Distribution Box IN 6.09 95.20 95.17
Distribution Box OUT 6.25 95.04 95.00
Lateral INVERT 6.65 94.97 94.95
Lateral 2 INVERT 6.66 94.96 94.95
Lateral 3 INVERT 6.66 94.96 94.95
Top of Chamber 6.57
Bottom of Bed/Chamber 6.90 94.72 94.70
Note: Building Sewer OUT measured approx. 5' from dwelling due to restriction from
existing front porch.