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Home My WebLink AboutSEPTIC 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.) SEPTICTANK(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.) SEPTICTANK(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.) SOILABSORPTION 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 SOIL ABSORPTION 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 ALLACTIVITIES THAT MIGHT DAMAGE THE SYSTEM. 15.) SOIL REMOVAL: ALL LOAMY SAND SOIL LAYERS SHALL BE REMOVED FOR A DISTANCE OF 5' FROM THE SOIL ABSORPTION SYSTEM DOWN TO THE 'C2' SAND LAYER. AREA TO BE BACKFILLED WITH CLEAN SAND AND COMPACTED TO MINIMIZE SETTLING. E SAS TRENCH - - - - - - - - - - ZEEE 4" PVC INSPECTION PORT FLOW PROFILE: NOT TO SCALE [ TOTAL OF (3): (2) ST, (1) DB ] 21" DIAMETER CONCRETE COVERS RAISED TO WITHIN 6" OF FINISH TOP OF FOUNDATION GRADE (OR AS NOTED) -v EL=46.0± (SEE NOTE #5) Proposed EL=43.0± SO L TEST LOGS: TEST HOI F l- FL=31.0± DEPTH FROM SURFACE (INCHES) SOIL HORIZON SOIL TEXTURE (USDA) SOIL COLOR (MUNSELL) SOIL MOTTLING OTHER 0-8 A Fine Loamy Sand 10YR3 2 NONE 8-19 B Loamy Sand 10YR7 4 NONE 19-42 Cl Loamy Sand 10YR7 6 NONE PERC @ 59"• <2 MIN IN 42-128 C2 Coarse Sand 10YR5 8 I NONE GW PERCHED @ 127" TEST Hnl F 2- FI =31.0± DEPTH FROM SURFACE (INCHES) SOIL HORIZON SOIL TEXTURE (USDA) SOIL COLOR (MUNSELL) SOIL MOTTLING OTHER 0-8 A Fine LoamV Sand 10YR3 2 NONE 8-20 B LoamV Sand 10YR7 4 NONE 20-44 Cl Loamy Sand 10YR7 6 I NONE 44-128 C2 Coarse Sand 10YR5 8 I NONE GW PERCHED 127" TEST HOLE 3: EL=30.8± DEPTH FROM SURFACE (INCHES) SOIL HORIZON SOIL TEXTURE (USDA) SOIL COLOR (MUNSELL) SOIL MOTTLING OTHER 0-8 A Fine Loamy Sand 10YR3 2 NONE 8-30 B Loamy Sand 10YR7 4 NONE 30-62 Cl LoamV Sand 10YR7 6 NONE PERC @ 52"• <2 MIN IN 62-132 C2 Coarse Sand 10YR5 8 I NONE GW PERCHED 125" TEST HOLE 4- FL=30.8± DEPTH FROM SURFACE (INCHES) SOIL HORIZON SOIL TEXTURE (USDA) SOIL COLOR (MUNSELL) SOIL MOTTLING OTHER 0-8 A Fine Loamy Sand 10YR3 2 NONE 8-31 B Loamy Sand 10YR7 4 NONE 31-60 Cl I Loamy Sand I 10YR7 6 I NONE 60-132 C2 I Coarse Sand I 10YR5 8 I NONE I GW PERCHED @ 125" DATE OF TESTING: 10/26/2023 - `- PERCOLATION RATE: LESS THAN 2 MIN/INCH IN 'C2' LAYER. \ WITNESSED BY: ROBERT REEDY, P.E., J.M. O'REILLY & ASSOCIATES, C. BARRY LEWIS, YARMOUTH HEALTH DEPARTMENT GR UNDWATER ENCOUNTERED, PERCHED @ 125", EL=20.4 IN TH3 TH4. USE OADING RATE OF 0.74 GPD/SF FOR SIZING OF SOIL ABSORPTI N SYSTEM. S STEM ALCU LATIONS: SWAGE DESIGN FLOW 4A3EDROUM D E LING @ 110 GPD = 440 GPC LEAb*NG-eA�ITY RE UIREDI 4 BEDROOMS (MAX.)PD 440 GPD REQUIR D �, SEPTIC TANK CAPACITY REQUIREDI DAILY FL = 40 GPD 0 = 8 0 GA .REQUIRED SEPTIC TANK CAPACITY PROVIDED, 1500 GALLON SEPTIC TANK MIN. LLO ) LEACHING CAPACITY -PROVIDED, TWO 2 41. X 3. .0 LE CHING TRENCHES CAN LEACH: \ Vt=[2][(41.0 X 3.0 +{41-0 X-2-.Q)2 + (3.0 X 2.0)2] X 0.74 GPD/SF=442.52 GPD 44 GPD EQUIRED NOTE: A ARBAGE D NO PERMITTED WITH THIS DESIGN. STALL, -- ONE 1 - 1500 GALLON SEPTIC TA K NE (1)- 3 OUTLET DISTRIBUTION OX (H-20 RATED) T�A(0 (2)- 41.0' X 3.0' X 2.0' LEACHING TRENCHES SAS DETAIL: SCALE: 1" = 10' 1 SAS TR _ _----- --------- - - - - - - -El-- O D-BOX -� 4" SCHED 40 PERFORATED PVC PIPE INSPECTION NOTE: PRIOR TO FINAL INSPECTION BY THE ENGINEER, SYSTEM NEEDS TO BE COMPLETE INCLUDING BUILDUP FOR COVERS. TWO (2) 4" PVC INSPECTION PORTS BUILT UP TO WITHIN 3" OF FINISH GRADE EL=31.0± j _.--Proposed EL=31.0± o 42.2± PVC TEE 12" Proposed (12" Min- 36" Max) 30.0± 43.00 41.00 10" 14" 0.75 3"T 4 0 T 9.90 9.73 3/4" -1/2" 2" DROP GAS BAFFLE 27.45 LEACHING TRENCH Longest Run (2) 41.0' x 3.0' x 2.0' TRENCHES TO BE END LOADED 26'---186' 3' 1500 GALLON DB-3 TWO RUNS @ 41'± SEPTIC TANK D-BOX SLOPE = 0.005 FT/FT H-20 29 FILTER FABRIC 4" PVC INSPECTION PORT ROOF RUNOFF DOWNSPOUT SECTION: NOT TO SCALE PROPOSED 6" ADS HDPE'T' CONNECTION 27.45 7.0'± EL=20.4± PERCHED GROUNDWATER, TEST HOLES 3 AND 4, LOT 14 (8 FAITH ROAD) PROPOSED 6" ADS HDPE OPEN SPACE STORMWATER SWALE (SEE DETAIL) PROPOSED DOWNSPOUT (SEE ARCHITECTURAL PLANS FOR DETAILS AND LOCATIONS) ADS DOWNSPOUT ADAPTER FINISH GRADE MINIMUM 0% PITCH 6" ADS HDPE TO LEACHING -� .1 �: •lll (50% SAND, 50% LOAM) FILTER FABRIC 3/4" TO 1-1/2" STONE NATIVE SOIL SUB -BASE - FREE FROM LOAM / ORGANIC MATERIAL 6" ADS HDPE FROM ROOF PIPE SHALL EXTEND 12" INSIDE CHAMBERS 5' SOIL REMOVAL SEE NOTE 15 SWALE DETAIL: NOT TO SCALE 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 AROUNDAND 6" STONE ABOVE AND BELOW.. CULTEC NO.4800 WOVEN GEOTEXTILE TO BE PLACED BENEATH ALL INLET PIPES (FOR SCOUR PROTECTION) k\ k\ k \ k �k \ k, 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, DRIVEWAY PAVEMENT SECTION: NOT TO SCALE REQ UIRED A CCE_SS_PR UN/NG_ZO_NE_ r �12' TALL X 14' WIDE) I � 10' (ACCESS) ! �� 2' 20' (PARKING) 21 P 1/4" PER FOOT PITCH I 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 on a rn rn Y 0 0 m c a OPEN SPACE ROOF RUN-OFF LEACHING FACILITY, TYPICAL (SEE DETAILS AND NOTES) PLAN_ SCALE =20' 0 20 40 60 SCALE 1"=20' G:\AAlobs\THE DAVENPORT COMPANY -ROUTE 6A-YARMOUTHPORT\DWG\8807.SDS Plans.dwg