HomeMy WebLinkAboutSeptic System Design Decision 3168G�
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6a
LOCUS
ROUTE 6
LOCATION MAP
LOT 4
20,322 SF
PROPOSED
FENCE
1
I
1
ASSESSORS HAP: 94
PARCEL: Z4
CURRENT ZONING: R-40 (1980 SUBDIVISION)
BUILDING SETBACKS:
F: 30' S: 15' R: 20'
FLOOD ZONE: C
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r
,I
j
1
FENCE LINE
j+17. f �
WW�STING
a
Og, 18 20 21
19
1 z1.8
KEY:
EXISTING CONTOUR: -
PROPOSED CONTOUR: ........................ • • • • • .
EXISTING SPOT ELEVATION: 25.5
PROPOSED SPOT ELEVATION: 25
TEST HOLE: -
UT ILITY POLE: --o-
FENCE
-o-FENCE LINE:
HYDRANT: -6
DM # 94_108_
+ i
16.2 17-
�18
` 19
'0. 1
TEST HOLE LOGS
ENGINI,'ER: THOMAS MCLELLAN, P.E.
WITNESS: AMY VON HONE, R.S.
DATE: 9-28-94
PERCOLATION RATE: < 2 MIN/IN
TH"-1 TH-2
18.7
TOP ELEV
24" SUBSOIL 16.7
MEDIUM
-FINE
SAND
......
.............
.14J
78"
i
122
10.7
8.7
211
TOP & ELEV
SUBSOIL I n.
FINE
SAND
," ..14.5
114" 1 111.6
120" 11.1
COARSE
SAND
NOTES:
1. VERTICAL DATUM: ASSUMED FROM QUAD (NGVD +�,)
2. MUNICAPAL WATER IS AVAILABLE.
3. SCHEDULE 40 - 4" PVC PIPE TO BE USED THROUGHOUT SEPTIC SYSTEM.
4. ALL PRECAST UNITS TO CONFORM WITH AASHTO H-10 & H-20
LOADING SPECIFICATIONS.
5. PIPE PITCH = 114" PER FOOT, (UNLESS NOTED OTHERWISE).
6. FIRST 2' OF PIPE OUT OF D -BOX TO BE LAID LEVEL.
7. THE SEPTIC SYSTEM HAS NOT BEEN DESIGNED TO ACCOMODATE THE
ADJUSTED USE OF A GARBAGE DISPOSAL.
GROUNDWATER 8. ALL CONSTRUCTION DETAILS ARE TO BE IN CONFORMANCE WITH THE
ELEV = 14S
STATE OF MASS. ENVIRONMENTAL CODE (TITLE FIVE) AND LOCAL
HEALTH REGULATIONS.
9. CONTRACTOR TO VERIFY LOCATIONS OF ALL UTILITIES PRIOR
TO CONSTRUCTION.
10. D -BOX TO BE WATER TESTED TO ENSURE LEVELNESS AND EQUAL FLOW.
11. PROPOSED WATER SERVICE TO BE, 10' (MINIMUM) FROM SEPTIC SYSTEM,
SGS GROUNDWATER ADJUSTMENT:
WELL: A1W-230, ZONE. C, ADJUSTMENT. 3.4'
SEPTIC SYSTEM DESIGN
FLOW ESTIMATE:
EDROOMS AT 110 GAL/DAY/BEDROOM = 330 GAL/DAY
SEP IC TANK:
330 GAL/DAY * 1.5 DAYS = 495 GAL
USE 1000 GALLON SEPTIC TANK
UTILITY
CLUSTER LEAC'YING AREA:
TTCv ? L Tl1TArnTDL'TTC/1DC TITTT:I Inv nr C,-rnuTi'
y-� �z1.s
EDGE OF PAVE
21121-0
�- CATCH BASIN
TEMPORARY
CUL-DE-SAC
BENCHMARK AT
CONC. BOUND
ELEV = 20.6
�2& x & x 0.96' DEEP)
SIDE AREA: 128 + 8)2 x.96 = 69 SF (2.5) = 172 GAL/ DAY
jBOTTOM AREA: 28 x• 8 = 224 SF (1.0) = 224 GAL/DAY
TOTAL CAPACITY = 396 GAL/DAY
h
d
SEPTIC SYSTEM SECTION
COVERS WITHIN 12"
24,5 OF FINISHED GRADE
TOP OF FOUNDATION
7rr-oUT
SCREEN
PORCH 114'
PROPOSED
3 BEDROOM
2811 DWELLING
GAR.
1�®
28'
PROPOSED DWELLING
28'
2" PEASTONE
OF 3/4" - 1 1/2"
WASHED STONE
J_
M
IL
r
\v2-0-55 11, F 18.5
I 20.8 1000 GAL ELEV. D -BOX 19.76 <2 ELEV.
ELEV. SEPTIC TANK 19.93 ELEV,
28'
21.0 4 ELEV.
ELEV.'1, TEE SIZES: f9,4g 3 FLOWDIFFUSORS WITH 2' OF 4.0'
INLET: 6" UP, 10" DOWNELEV. STONE (28' x 8' x 0.96' DEEP)
OUTLET: 6" UP, 19" DOWN
ADJUSTED
GROUNDWATER
ELEV = 14.5'
DM �_
DEMAREST-McLELLAN ENGINEERING
24 SCHOOL STREET P.O. BOX 463
WEST DENNIS, MASSACHUSETTS 026%0
I
SITE AND SEWAGE PLAN
LOCATION.
•
20 DEV EAU LANE
I YARMOUTHPORT, MA
PREPARED FOR -
JOANNE WHITE
SCALE: 1" = 30' DATE: 11-9-94
REFERENCE: PLAN BOOK: 347 PAGE: 44
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