HomeMy WebLinkAboutSite and Sewage Design PlanGENERAL NOTES:
A.) NEITHER DRIVEWAYS NOR PARKING AREAS ARE ALLOWED OVER SEPTIC SYSTEM
UNLESS H-20 COMPONENTS ARE USED.
B.) THE DESIGNER WILL NOT BE RESPONSIBLE FOR THE SYSTEM AS DESIGNED UN-
LESS CONSTRUCTED AS SHOWN. ANY CHANGES SHALL BE APPROVED IN WRITING.
C.) CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFYING THE LOCATION OF ALL
UNDERGROUND AND OVERHEAD UTILITIES PRIOR TO COMMENCEMENT OF WORK.
CONSTRUCTION NOTES:
1.) ALL CONSTRUCTION SHALL CONFORM TO THE STATE ENVIRONMENTAL CODE,
TITLE 5,AND THE REQUIREMENTS OF THE LOCAL BOARD OF HEALTH.
2.) SEPTIC TANK(S), GREASE TRAP(S), DOSING CHAMBER(S) AND DISTRIBUTION
BOX(ES) SHALL BE SET ON A LEVEL STABLE BASE WHICH HAS BEEN MECHANICALLY
COMPACTED, OR ON A 6 INCH CRUSHED STONE BASE.
3.) SEPTIC TANK(S) SHALL MEET ASTM STANDARD C1127-93 AND SHALL HAVE
AT LEASTTHREE 20" DIAMETER MANHOLES. THE MINIMUM DEPTH FROM THE BOT-
TOM OF THE SEPTIC TANK TO THE FLOW LINE SHALL BE 48".
4.) SCHEDULE 40 PVC INLET AND OUTLET TEES SHALL EXTEND A MINIMUM OF 6"
ABOVE THE FLOW LINE OF THE SEPTIC TANK AND SHALL BE INSTALLED ON THE
CENTERLINE OF THE TANK DIRECTLY UNDER THE CLEANOUT MANHOLE.
5.) RAISE COVERS OF THE SEPTIC TANK AND DISTRIBUTION BOX WITH PRECAST
CONCRETE WATER TIGHT RISERS OVER INLET AND OUTLET TEES TO WITHIN 6" OF
FINISH GRADE, OR AS APPROVED BY THE LOCAL BOARD OF HEALTH AGENT.
6.) PIPING SHALL CONSIST OF 4" SCHEDULE 40 PVC OR EQUIVALENT, PIPE SHALL
BE LAID ON A MINIMUM CONTINUOUS GRADE OF NOT LESS THAN 1%.
7.) DISTRIBUTION LINES FOR SOIL ABSORPTION SYSTEM (AS REQUIRED) SHALL BE
4" DIAMETER SCHEDULE 40 PVC LAID AT 0.005 FT/FT. LINE SHALL BE CAPPED
AT END OR AS NOTED.
8.) OUTLET PIPES FROM DISTRIBUTION BOX SHALL REMAIN LEVEL FOR AT LEAST
2' BEFORE PITCHING TO SOIL ABSORPTION SYSTEM, WATER TEST DISTRIBUTION
BOXTOASSURE EVEN DISTRIBUTION.
9.) DISTRIBUTION BOX SHALL HAVE A MINIMUM SUMP OF 6" MEASURED BELOW
THE OUTLET INVERT.
10.) BASE AGGREGATE FOR THE LEACHING FACILITY SHALL CONSIST OF 3/4" TO
1-1/2" DOUBLE WASHED NATIVE STONE FREE OF IRON, FINES AND DUST AND SHALL
BE INSTALLED BELOW THE CROWN OF THE DISTRIBUTION LINE TO THE BOTTOM OF THE
SOILABSORPTION SYSTEM. BASE AGGREGATE SHALL BE COVERED WITH FILTER FABRIC
OR APPROVED EQUIVALENT.
11.) VENT SOILABSORPTION SYSTEM WHEN DISTRIBUTION LINES EXCEED 50 FEET,
WHEN LOCATED EITHER IN WHOLE OR IN PART UNDER DRIVEWAYS, PARKING AREAS,
TURNING AREAS OR OTHER IMPERVIOUS MATERIAL,- OR WHEN PRESSURE DOSED.
12.) SOIL ABSORPTION SYSTEM SHALL BE COVERED WITH A MINIMUM OF 9" OF
CLEAN MEDIUM SAND (EXCLUDING TOPSOIL).
13.) FINISH GRADE SHALL BE A MAXIMUM OF 36" OVER THE TOP OF ALL SYSTEM
COMPONENTS, INCLUDING THE SEPTIC TANK, DISTRIBUTION BOX, DOSING CHAMBER
AND SOILABSORPTION SYSTEM. SEPTIC TANKS SHALL HAVE A MINIMUM COVER
OF 9".
14.) FROM THE DATE OF INSTALLATION OF THE SOIL ABSORPTION SYSTEM UNTIL
RECEIPT OF A CERTIFICATE OF COMPLIANCE, THE PERIMETER OF THE SOIL ABSORP-
TION SYSTEM SHALL BE STAKED AND FLAGGED TO PREVENT THE USE OF SUCH
AREA FOR ALL ACTIVITIES THAT MIGHT DAMAGE THE SYSTEM.
SAS DETAIL:
SCALE: 1" = 10'
SO L TEST LOGS:
TCCT Urll C 'I . CI -C7 7-L
DEPTH FROM
SURFACE
(INCHES)
SOIL
HORIZON
SOIL
TEXTURE
(USDA)
SOIL
COLOR
(MUNSELL)
SOIL
MOTTLING
OTHER
0-10
A
Fine Loamy Sand
10YR3 2
NONE
10-26
B
Loa mV Sand
10YR6 8
NONE
26-132
Cl
Coarse Sand
10YR7 6
NONE
PERC @ 68"• <2 MIN IN
r' 1. 11 _C7 71
DEPTH FROM
SURFACE
(INCHES)
SOIL
HORIZON
SOIL
TEXTURE
(USDA)
SOIL
COLOR
(MUNSELL)
SOIL
MOTTLING
OTHER
0-8
A
Fine LoamV Sand
10YR3 2
NONE
8-24
B
Loamy Sand
10YR6 8
NONE
24-132
C1
Coarse Sand
10YR7 6
NONE
TILT 11/11 I I. CI -CC 01
DEPTH FROM
SURFACE
(INCHES)
SOIL
HORIZON
SOIL
TEXTURE
(USDA)
SOIL
COLOR
(MUNSELL)
SOIL
MOTTLING
OTHER
0-8
A
Fine Loamy Sand
10YR3 2
NONE
8-22
B
Loamy Sand
10YR6 8
NONE
22-132
Cl
Coarse Sand
10YR7 6
NONE
PERC @ 76"; <2 MIN IN
TCCT IJr l C A. Cl -Cr Q4.
DEPTH FROM
SURFACE
(INCHES)
SOIL
HORIZON
SOIL
TEXTURE
(USDA)
SOIL
COLOR
(MUNSELL)
SOIL
MOTTLING
OTHER
0-9
A
Fine Loamy Sand
10YR3 2
NONE
9-24
B
Loamy Sand
10YR6 8
NONE
24-132
Cl
Coarse Sand
10YR7 6
NONE
DATE OF TESTING: 10/25/2023
PERCOLATION RATE: LESS THAN 2 MIN/INCH IN'C1' LAYER.
WITNESSED BY: ROBERT REEDY, P.E., J.M. O'REI-LY & ASSOCIATES, INC.
BARRY LEWIS, YARMOUTH HEALTH DEPARTMENT
NO WATER ENCOUNTERED
USE A LOADING RATE OF 0.74 GPD/SF FOR SIZING OF SOIL ABSORPTION SYSTEM,
SYSTEM DESIGN CALCULATIONS:
EWAGE DESIGN F�REQUII
€f2�0 M D E GP 440�
LEACHING CAPAM
4 BEDROOMS (MAX.)@ 110 GPD = 0 GPD RE IRED
SEPTIC TANK CAPACITY REQUIRED.
DAILY FLOW = PD 0% = 880 GA . REQUIRED
SEPTIC TANK CA ACITY PROVIDEM
1500 GLLON SEPTIC TANK MIN.ALLOWED)
LEACH NGA'PACITY PROVIDEDi
ONE .5 1 X 2.0 LEACHING CHAMBER CAN LEACH:
Vt=[(33.5 X 12.83) + (33.5 X 2.0)2 + (12.83 X 2.C)2) X 0.74 GPD/SF=455.10 GP
455 GPD>440 D RE IRED
NOTE: A(GARBAGE DISPO)5 L NOT PERMITTED WITH THIS DESIGN.
INSTALLL__ `
ONE 1-156�4flf�1SEPTICTANK
ONE (1), 3 0)1.ITLET DISTRIBUTION BOX (H-20 RATED)
THREE (300 GALLON LEACH CHAMBERS WITH 4' OF NATIVE STONE ALL AROUND
ROOF RUNOFF DOWNSPOUT SECTION:
NOT TO SCALE
PROPOSED 6" ADS H DPE 'T' CONNECTION
PROPOSED 6" ADS HDPE 9C
PROPOSED DOWNSPOUT
(SEE ARCHITECTURAL PLANS
FOR DETAILS AND LOCATIONS)
ADS DOWNSPOUT ADAPTER
FINISH GRADE
MINIMUM 0% PITCH
6" ADS HDPE TO LEACHING -_
DRIVEWAY PAVEMENT SECTION:
6" ADS HDPE FROM ROOF
PIPE SHALL EXTEND
12" INSIDE CHAMBERS
NOT TO SCALE
_REQ_Ul_RED_ACCE_SS_PRUN/NG_ZO_NE_
(12' TALL X 14' W/DEJ
I
I I
i 10' (ACCESS) ! ��
2, 20' (PARKING) 21
SRO
1/4" PER FOOT PITCH
1" FINISH COVER (ROLLED)
1.5 BINDER COURSE (ROLLED)
4" DENSE GRADE CRUSHED STONE BASE (14' WIDE)
(MIN) 4" CLEAN SAND (SUB -BASE)
ALL DRIVEWAY FILL SHALL BE CLEAN SAND PLACED IN
(MAX) 6" LIFTS AND COMPACTED TO 95% DENSITY AS
DETERMINED BY THE MODIFIED PROCTOR TEST
SWALE DETAIL:
NOT TO SCALE
FLOW PROFILE:
NOT TO SCALE
[ TOTAL OF (4): (2) ST, (1) DB, (1) SAS )
21" DIAMETER CONCRETE COVERS
RAISED TO WITHIN 6" OF
TOP OF FOUNDATION FINISH GRADE (OR AS NOTED)
1 � EL=59.0± (SEE NOTE #5)
f Proposed EL=57.0±
U-I3UA
) COVER TO BE BUILT UP TO
WITHIN 6" OF FINISH GRADE
INSPECTION NOTE:
PRIORTO FINAL INSPECTION BY THE ENGINEER, SYSTEM NEEDS TO
BE COMPLETE INCLUDING BUILDUP FOR COVERS.
sed EL=57.0± \ r- Proposed EL=57.0±
PERMEABL
(50% SAND, 50% [
FILTER F
3/4" TO 1-1/2".
NATIVE SOIL SUB -BASE -
FREE FROM LOAM / ORGANIC MATERIAL
q 55 7+ 36" Proposed
(9" Min- 36" Max)
54.0±
FILTER FABRIC
56.00 4.50 10" 14" 54.2 53.25 3/4"- 1-1/2" NATIVE STONE
3" T T 53.75 53.58 ^' r-i
4'0" I 2" DROP
GAS BAFFLE 51.25
USE THREE (3) SHOREY PRECAST
500GALLON LEACH CHAMBERS
Longest Run WITH 4' OF NATIVE STONE AROUND
31' 15' 15 (END VIEW)
1500 GALLON DB-3 iEL=20.4± PERCHED GROUNDWATER,
SEPTIC TANK D-BOX LEACHING CHAMBER TEST HOLES 3 AND 4, LOT 14 (8 FAITH ROAD)
33.5' x 12.83' x 2.0'
H-20
ROOF RUNOFF LEACHING SECTION:
NOT TO SCALE
1-1/2" WASHED STONE
SURROUNDING CHAMBERS
FINISH GRADE
CULTEC NO. 410 NON -WOVEN GEOTEXTILE
(ORAPPROVED EQUAL) AROUND TOP AND
SIDES OF STONE.
6" MINIMUM
NATURALLY COMPACTED FILL
�-10.5' x 6.33' LEACHING FACILITY -
ONE (1) CULTEC RECHARGER 330XLHD
HEAVY DUTY CHAMBER WITH 1' STONE
AROUND AND 6" STONE ABOVE AND BELOW..
CULTEC NO.4800 WOVEN GEOTEXTILE TO BE PLACED
BENEATH ALL INLET PIPES (FOR SCOUR PROTECTION)
ROOF RUN-OFF NOTES:
1.) ALL ROOF GUTTERS SHOULD BE DIRECTLY CONNECTED TO
LEACHING FACILITIES USING 6" ADS PIPE.
2.) DWELLING SHALL UTILIZE A TOTAL OF (2) CULTEC
RECHARGER 330XLHD STORMWATER LEACHING UNITS, SPLIT
INTO (2) 10.5' x 6.33' LEACHING FACILITIES.
3.) LEACHING FACILITIES SHALL BE SET WITHIN A CLEAN SAND
BASE WITH ANY UNSUITABLE SOILS AND/OR ORGANIC
MATERIAL REMOVED. CHAMBERS SHALL BE SURROUNDED BY
6" STONE ON TOP AND BOTTOM, 12' STONE ON SIDES,
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