HomeMy WebLinkAboutMiscellaneous - 9 TURTLE LANE 3/22/2018 i
North Andover Health Department
Community and Economic Development Division
ONSITE WASTEWATER SYSTEM CONSTRUCTION NOTES
LOCATION INFORMATION
ADDRESS: 9 Turtle Lane MAP: 106.8 LOT: 104
INSTALLER: Kellett
DESIGNER: Ben Osgood Jr.
PLAN DATE: October 16, 2017 final revision date of November 6, 2017
BOH APPROVAL DATE ON PLAN: 11/22/2017
INSPECTIONS
TANK INSPECTION: 12/1/2017
DATE OF BED BOTTOM INSPECTION: 12/5/2017
DATE OF FINAL CONSTRUCTION INSPECTION: 12/14/17
DATE OF FINAL GRADE INSPECTION:
SITE CONDITIONS
N/A 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
N/A Cleanouts per plan
® Bottom of flank hole has 6" stone base
Weep hole plugged
1500 gallon tank has been installed
H-10 loading
Monolithic tank construction
Watertightness of tank has been achieved by
visual testing
® Inlet tee installed, centered under access port j
F71 Outlet tee installed, centered under access port
(effluent filter)
® 24" inch cover to within 6" of finish grade
installed over one access port
® Neoprene boots 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
Neoprene boots around inlet & outlet
Comments:
CONTROL PANEL
® Alarm & Pump are on separate circuits
® Alarm sounds when float is tripped
® Location of control panel: outside
® Alarm signal located inside: outside
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
N/A Speed levelers provided (not required)
M Schedule 40 PVC Pipe
Comments: 2" x 4" coupling about 4'-5' from D-box to transition from 2" force
main to 4" SCH 40 PVC
i
f
SOIL ABSORPTION SYSTEM (General)
® Bottom of SAS excavated down to C soil layer,
as provided on plan
® Size of SAS excavated as per plan f
® 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:
20 x 30, 30 x 38 w/over dig
FINAL GRADE
M 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 = 100.00
HR = 2.57
HI = 102.57
SYSTEM ELEVATIONS
--------------------
ROD AS-BLT INVERT DESIGN INVERT
ELEVATION ELEV ELEV
Benchmark
Building Sewer OUT 94.5
Septic Tank IN 7.10 95.12 94.30
Septic Tank OUT 7.35 94.87 94.05
Pump Chamber IN 7.3794.85 94�00
.......------
Pump Chamber OUT 7.19 95.21 93.75
Distribution Box IN 5.61 96.61 96.54 ----------
Distribution Box OUT 5.80 96.42 96.37
Lateral 1 TOP 5.95 / 6.09
---------------
Lateral 1 INVERT 96.27 / 96.13 96.27 96.12
Lateral 2 TOP 5,89 / 6.08
Lateral 2 INVERT 96.33 / 96.14 96.27 96,12
Lateral 3 TOP 5.96 /6.08
Lateral 3 INVERT 96.26 / 96.14 96.27 96.12
Lateral 4 TOP 5,95 / 6.08
Lateral 4 INVERT 96.27 / 96.14 96.27 96.12
------------- -------
-------------
..........
-----------------
Bottom of Bed 6.96 95.61 95.62
CRITICAL SETBACK DISTANCES
Mark those distances checked in the field against the design plan and regulatory
setback j
Tank SAS Sewer
® Property line 10 10 --
® Cellar wall 10 20 --
® Inground pool 10 20 --
® Slab foundation 10 10 --
Deck, on footings, etc 5 10 --
® Waterline 10 1.0 10'
® Private drinking well 75 1.00, 50
Irrigation well 75 100
® Surface Water 25 50
® Bordering Vegetated Wetland ,
Salt Marsh, Inland/Coastal Batik 75 100
® Wetlands bordering surface
water supply or trib. (in Watershed) 150 150
® Crib. to surface water supply 325 325
Public well 400 400
® Interim Wellhead Prot. Area
® Reservoirs 400 400
® Drains (wat. supply/trib.) 50 100
® Drains (intercept g.w.) 25 50
® Drains (Other) Foundation 10(5) 20(10)
® Drywells 20 25
1 Suction line 222(2)
z 100 feet is a minimum acceptable distance and no variance is allowed for a lesser distance(NA 5.02).
3 As defined in 310 CMR 10.55, 10.32, 10.54, and 10.30,respectively,pursuant to 15.211(3), also by NA
wetland bylaws