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COBB AVENUE
MAP ID: 125-172
G zo
PROPOSED SEPTIC SYSTEM
UPGRADE PLAN
Date
17 COBB AVENUE YARMOUTH PORT MA
NOTES:
OWNER OF RECORD
Prepared for: Cape Cod Septic Services, 350
Main St., West Yarmouth, MA 02672
1) HOUSE LOCATION TAKEN FROM CERTIFIED PLOT
PLAN BY
SPENCER, JOHN JR
Engineering by:
SCALE DRAWN JOB. N0.
ELDREDGE ENGINEERING, INC, HYANNIS, MA, DATED 11/26/85
SPENCER, KAREN C
Engineering Works, Inc.
1"=30' P.T.M. 308-19
2) PLAN REFERENCES: PLAN BK 396 PG 73 & PLAN
BK 129 PG 147
17 COBB AVENUE
12 West Crossfield Road, Forestdale, MA 02644
DATE CHECKED SHEET NO.
3) FLOOR PLAN TO BY PROVIDED BY HOMEOWNER
YARMOUTH PORT, MA
02675 (508) 477-5313
1/8/20 P.T.M. 1 Of 2
NOTE: TO PREVENT BREAKOUT, THE PROPOSED
FINISH GRADE SHALL NOT BE < EL:85.0
SEPTIC TANK FOR A DISTANCE OF 15' AROUND THE
�2
INSTALL RISERS & COVERS OVER INLET
PROPOSED D -BOX PERIMETER OF THE S.A.S.
AND SET TO 6" OF FINISH GRADE, PROPOSED S.A.S.
INSTAL! WATERTGHT RISER & PROVIDE TWO ACCESS MANHOLES TO WITHIN 3"
OF FINISH GRADE FOR INSPECTION PURPOSESrV
•F
COVER SET TO 6" OF GRADE
: h
T.O.F.=100.9+ CHARCOAL
F.G. EL. -95.01 F.G. EL=94.31 F.G. EL.=90.0± F.G. EL.=91.0± VENT
T-. �-
DE ..
0
CK (above) 28 8;5'
walkout bsmnt�
(BACK YARD)
) ' / / ,' //
MAINTAIN 2% GRADE (MIN.) OVER S.A.S.
;�,
i
L = 46' L = 5'
"T O F =100.91 §
® S=1% (MIN.) ® S-1% (MIN.)
4"SCH40 PVC 4'SCH40 PVC
V
10'I 8 as Ba
14" B®®a®®®
EXISTING 48" uaul0 ®assess
LEVEL 4' 4.8' 4'
SEPTIC LAYOUT
ADD
cas BAFFLE INV.=86.17 PROPOSED INV.=86.00
INV.=89.60 D -BO EFFECTIVE WIDTH
INV.=84.50
EXISTING SEPTIC TANK 2-500 GALLON LEACHING CHAMBERS
STONE AS SHOWN
GENERAL NOTES:
1. ALL CHANGES TO THIS PLAN MUST BE APPROVED BY THE LOCAL
H-20 ED
BOARD OF HEALTH AND THE DESIGN ENGINEER.
NOTES: TOP CONC. ELEV.=85.6±
2. ALL WORK AND MATERIALS SHALL CONFORM TO THE REQUIREMENTS
f BREAKOUT ELEV.=85.00WE
OF THE STATE ENVIRONMENTAL CODE, TITLE V, AND ANY APPLICABLE
1) CONTRACTOR SHALL VERIFY ALL. EXISTING PIPE INV. ELEV.=84.50 ®®®®
INVERTS, PRIOR TO INSTAL.TION. ases eases
LOCAL RULES AND REGULATIONS, EXCEPT AS REQUESTED BELOW:
aaa aaaaa
2) D -BOX SHALL BE SET LEVEL AND TRUE TO GRADE BOTTOM ELEV.=82.50
CMR 15.405(1)(b): CONTENTS OF LOCAL UPGRADE APPROVAL
1) A 3' variance to the 3' maximum cover requirement, for up to
ON A MECHANICALLY COMPACTED SIX INCH CRUSHED 4' 2 X 8.5=17.0 4'
6' of max. cover. S.A.S. shall be H-20 and vented.
STONE BASE, AS SPEC FLED IN 310 CMR 15.22', (2). 4' MIN. OF NATURALLY OCCURRING EFFECTIVE LENGTH = 25.0'
3. THE SEWAGE DISPOSAL SYSTEM SHALL NOT BE BACKFILLED PRIOR
PERVIOUS MATERIAL
3) INSTALL INLET & OUTLET TEES AS REQUIRED.
TO INSPECTION AND APPROVAL BY THE BOARD OF HEALTH AND THE
4' VA. ABOVE GROUNDWATER LEACHING SYSTEM SECTION
DESIGN ENGINEER.
4) CONTRACTOR SHALL INSTALL A GAS BAFFLE ON BOTT. OF TP -1, EL.=78.0 -
THE OUTLET TEE.
4. ANY CONDITIONS ENCOUNTERED DURING CONSTRUCTION DIFFERING
3/4" 70 t-1/2' DOUBLE
FROM THOSE SHOWN HEREON SHALL BE REPORTED TO THE DESIGN
WASHED STONE
ENGINEER BEFORE CONSTRUCT'ON CONTINUES,
5. ALL ELEVATIONS BASED ON AN ASSUMED DATUM.
LAYER OF ED
3o0UBLE
6. THE DESIGN ENGINEER IS NOT RESPONSIBLE FOR THE FAILURE OF
WASH- STO1/2"
SEPTIC SYSTEM PROFILE
THE CONTRACTOR OR OWNER TO NOTIFY THE LOCAL BOARD OF
(OR APPROVED FILTER FABRIC)
HEALTH FOR PROPER 'INSPECTIONS DURING CONSTRUCTION.
7. WATER SUPPLY PROVIDED BY TOWN WATER SERVICE.
DESIGN CRITERIA
SOIL LOG
8. THERE ARE NO WELLS WITHIN 100' OF THE PROPOSED S.A.S. V
9. ALL AREAS CLEARED FOR CONSTRUCTION SHALL BE RESTORED AS
DATE: JANUARY 2, 2020
AGREED UPON BY OWNER AND CONTRACTOR OR AS OTHERWISE
NUMBER OF BEDROOMS: 2
SOIL EVALUATOR: PETER McENTEE (SE#1542)
DIRECTED BY THE APPROVING AUTHORITIES.
SOIL TEXTURAL CLASS: CLASS I
WITNESS: PHIL RENAUD - HEALTH AGENT
10. IT SHALL BE THE RESPONSIBILITY THE CONTRACTOR TO VERIFY
DESIGN PERCOLATION RATE: <5 MIN/IN
Elev. TP Depth
� PERC TEST
THE LOCATION OF ALL UNDERGROUND UTILITIES, PRIOR TO BEGINNING
(0.74 GPD/SF LOADING RATE)
90.5 0" ELEV,
CONSTRUCTION.
DAILY FLOW: 220 GPD
DEPTH
FILLo"
1'.. WHERE REQUIRED, CONTRACTOR SHALL REMOVE ALL UNSUITABLE SOILS
DESIGN FLOW: 330 GPD
85.0 66" 880
IN THE AREA BENEATH AND FOR 5' ON ALL SIDES OF THE S.A.S. AND
A FILL
REPLACE WITH CLEAN SAND AS SPECIFIED IN 310 CMR 255(3).
GARBAGE GRINDER: NO
LODAMRY SAND 84 5
LEACHING AREA REQUIRED: (330 GPD) = 445.9 SF
A 42"
12. AREAS REQUIRING STRIPOU7 OF UNSUITABLE MATERIALS SHALL BE
843 72" LOAMY SAND
B
INSPECTED BY HEALTH DEPARTMENT PRIOR TO BACKFILL.
.74 GPD/SF
10YR 4/2
13. THIS PLAN IS TO BE USED FOR SEPTIC SYSTEM PURPOSES ONLY AND
EXISTING SEPTIC TANK: 1000 GALLON CAPACITY
( LOAMY SAND 84.0 48"
IS NOT TO BE CONSIDERED A PROPERTY LINE SURVEY.
PROPOSED DISTRIBUTION BOX: INLET, 3 OJTLETS
B
10YR 5/6 PERC
USE 2-500 GALLON LEACHING CHAMBERS IN SERIES
54"/72"
PROPOSED SEPTIC SYSTEM UPGRADE PLAN
82.7 94" LOAMY SAND
SURROUNDED BY DOUBLE WASHED STONE ON ALL SIDES
17 COBB AVENUE, YARMOUTH PORT, MA
10YR 5/6
SIDEWALL AREA: 2(12.8' + 25.0') X 2 = 151.2 S.F.
FINE SAND
2.5Y5/3 81.0 84"
Prepared for: Cape Cod Septic Services, 350 Main St., West Yarmouth, MA 02672
BOTTOM AREA: 12.8' x 25.0' = 320.0 S.F.
PERC TEST WAS PERFORMED DOWN
En Ineerin b
9 9 Y•
SCALE
DRAWN
JOB. N0.
TOTAL AREA:..............................................................471.2 S.F.
SLOPE FROM TP -1 WITH LESS FILL
78.0 150' AND LESS DEPTH TO "B" HORIZON
Engineering Works, Inc.
NTS
P.T.M.
308-19
DESIGN FLOW PROVIDED: 0.74 GPD/SF(471.2 SF) = 348.7 GPD
NO GROUNDWATER ENCOUNTERED PERC RATE: 3 MIN/IN ("B" HORIZON)
12 West Crossfield Road, Forestdole, MA 02644
DATE
CHECKED
SHEET NO.
(508) 477-5313
1/8/20
P.T.M.
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