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Home My WebLink AboutEngineered Plan - Rev. 2017TOP OF FOUNDATION MINIMUM 20" DIAMETER CONCRETE EL = 13.4 COVERS RAISED TO WITHIN 6" OF FINISH GRADE (OR AS NOTED) EXISTING EL 12.5+____ /\// MINIMUM 9 OF C ' A/i , F=9° 1.7f AST F 11.15 _LIQUID LEVEL_ t INVERT EL) 10.60 - - (Proposed INVERT EL 10 14" 10.5 TEE INSTALL TEE INVERT EL AND GAS BAFFLE (Existing) 1500 Gal' 750 Gal 27± I 2250 , GALLON 2 -COMPARTMENT SYSTEM DESIGN CALCULATIONS SEPTIC TANK SEWAGE DESIGN FLOW REQUIRED: 5 BEDROOM DWELLING @ 110 GPD / BEDROOM = 550 GPD REQUIRED SEWAGE DESIGN FLOW PROVIDED: THIRTY TWO (32) ADS ARC36LP UNITS IN BED CONFIGURATION IN FOUR (4) ROWS OF EIGHT (8) UNITS. CAPCITY = 32 UNITS X 5' LONG X 4,73 SF/LF = 756.80 SF/LF (MINIMUM 31 UNTIS) 756.80 X 0.74 GPD = 560 GPD 560 GPD PROVIDED > 550 GPD REQUIRED MULTI FAMILY (3 UNITS) MINIMUM TWO COMPARTMENT TANK FIRST COMPARTMENT CAPACITY REQUIRED: 550 GPD X 200% = 1100 GPD REQUIRED SECOND COMPARTMENT CAPACITY REQUIRED: 550 GPD REQUIRED PROPOSED: 2250 GAL TWO COMPARTMENT SEPTIC TANK PROPOSED: 1500 GAL FIRST COMPARTMENT - 750 GAL SECOND COMPARTMENT A GARBAGE DISPOSAL IS NOT PERMITTED WITH THIS DESIGN CONSTRUCTION NOTES 1.) ALL WORK SHALL CONFORM TO THE STATE ENVIRONMENTAL CODE, TITLE 5 (310 CMR 15.000): STANDARD REQUIREMENTS FOR THE SITING, CONSTRUCTION, INSPECTION, UPGRADE, AND EXPANSION OF ON-SITE SEWAGE TREATMENT AND DISPOSAL SYSTEMS AND FOR THE TRANSPORT AND DISPOSAL OF SEPTAGE, AND THE LOCAL BOARD OF HEALTH REGULATIONS. 2.) ANY SEPTIC SYSTEM COMPONENT INSTALLED IN A LOCATION WHERE THERE IS POTENTIAL FOR VEHICLES OR HEAVY EQUIPMENT TO PASS OVER IT SHALL BE DESIGNED TO WITHSTAND AN H-20 LOADING. IF UNDER AN IMPERVIOUS SURFACE, SYSTEM SHALL BE VENTED TO THE ATMOSPHERE. 3.) TO MINIMIZE UNEVEN SETTLING, SEPTIC TANKS AND D -BOX SHALL BE INSTALLED ON A STABLE MECHANICALLY -COMPACTED BASE ON SIX INCHES OF CRUSHED STONE. 4.) COVERS OVER THE INLET AND OUTLET TEES OF THE SEPTIC TANK, THE DISTRIBUTION BOX, AND THE SOIL ABSORPTION SYSTEM SHALL BE RAISED TO WITHIN 6" OF FINAL GRADE. LEACHING FIELDS, TRENCHES, AND OTHER SOIL ABSORPTION SYSTEMS WITHOUT ACCESS MANHOLES SHALL HAVE AT LEAST ONE (1) INSPECTION PORT CONSISTING .OF PERFORATED 4" PVC PIPE PLACED VERTICALLY TO THE BOTTOM OF THE SOIL ABSORPTION SYSTEM WITH A CAP, TIED WITH MAGNETIC MARKING TAPE, ACCESSIBLE TO WITHIN 3" OF FINAL GRADE. 5.) PIPING SHALL CONSIST OF 4" SCHEDULE 40 PVC OR EQUIVALENT, PIPE SHALL BE LAID ON A MINIMUM CONTINUOUS GRADE OF NOT LESS THAN 2% FROM THE BUILDING TO THE SEPTIC TANK, AND NOT LESS THAN 1% OTHERWISE. 6.) DISTRIBUTION LINES FOR THE SOIL ABSORPTION SYSTEM SHALL BE 4" DIAMETER SCHEDULE 40 PVC (OR EQUIVALENT) LAID AT 0.005 FT/FT, UNLESS OTHERWISE NOTED. LINES SHALL BE CAPPED AT END OR AS NOTED. 7.) LINES FROM THE DISTRIBUTION BOX TO BE LEVEL FOR THE FIRST TWO (2) FEET BEFORE PITCHING TO THE SOIL ABSORPTION SYSTEM. DISTRIBUTION BOX SHALL BE WATER TESTED TO ASSURE EVEN DISTRIBUTION. 8.) GROUT TO BE USED AT ALL POINTS WHERE PIPES ENTER OR LEAVE ALL CONCRETE STRUCTURES IN ORDER TO PROVIDE A WATERTIGHT SEAL. 9.) HEAVY EQUIPMENT SHALL NOT BE ALLOWED TO OPERATE OVER THE LIMITS OF THE SEWAGE DISPOSAL FIELD DURING THE COURSE OF CONSTRUCTION OF THE SYSTEM. 10.) IN ACCORDANCE WITH 310 CMR 15.221, ALL SYSTEM COMPONENTS SHALL BE MARKED WITH MAGNETIC MARKING TAPE. 11.) THERE ARE NO KNOWN WELLS WITHIN 100' OF THE PROPOSED SOIL ABSORPTION SYSTEM. 12.) FROM THE DATE OF THE INSTALLATION OF THE SOIL ABSORPTION SYSTEM UNTIL RECEIPT OF THE CERTIFICATE OF COMPLIANCE, THE PERIMETER SHALL BE STAKED AND FLAGGED TO PREVENT USE OF THE AREA THAT MAY CAUSE DAMAGE TO THE SYSTEM. 13.) THE DESIGNER WILL NOT BE RESPONSIBLE FOR THE SYSTEM AS DESIGNED UNLESS CONSTRUCTED AS SHOWN ON PLAN. ANY CHANGES SHALL BE APPROVED IN WRITING BY THE DESIGNER. 14.) THE BOARD OF HEALTH REQUIRES INSPECTION OF ALL CONSTRUCTION BY AN AGENT OF THE BOARD OF HEALTH AND THE DESIGNER. THE DESIGNER SHALL CERTIFY IN WRITING THAT THE SEWAGE DISPOSAL SYSTEM WAS INSTALLED IN ACCORDANCE WITH THE TERMS OF THE PERMIT AND THE APPROVED PLANS. 48 HOURS ADVANCE NOTICE IS REQUESTED. 15.) LOCATION OF UTILITIES IS APPROXIMATE AND CONTRACTOR SHALL BE RESPONSIBLE FOR DETERMINING THE LOCATION OF ALL UNDERGROUND AND OVERHEAD UTILITIES PRIOR To COMMENCEMENT OF ANY WORK. THIS INCLUDES, BUT IS NOT LIMITED TO, REQUESTS TO DIGSAFE, ANY PRIVATE UTILITY COMPANIES, AND THE LOCAL WATER DEPARTMENT. , 16.) CONTRACTOR SHALL VERIFY THAT ALL WASTELINES ARE CONNECTED BY WATER TESTING WITHIN THE DWELLING PRIOR TO INSTALLATION OF ANY SEPTIC COMPONENTS. 17.) CONTRACTOR SHALL VERIFY EXISTING INVERT ELEVATIONS PRIOR TO INSTALLATION OF ANY SEPTIC SYSTEM COMPONENTS. 18.) TEST HOLES COMPLETED PER STATE ENVIRONMENTAL CODE, TITLE 5. SOILS CAN BE VARIABLE AND TEST HOLE DATA IS NO GUARANTEE OF SOIL CONDITIONS IN OTHER AREAS. IF SOILS DIFFER FROM THOSE SHOWN IN THE SOILS LOGS, DESIGN ENGINEER IS TO INSPECT THE SOILS PRIOR TO PROCEEDING WITH INSTALLATION OF ANY SEPTIC COMPONENTS. 19.) EXISTING SEPTIC COMPONENTS TO BE LOCATED, PUMPED DRY, FILLED WITH CLEAN SAND AND ABANDONED IN PLACE OR REMOVED AS REQUIRED. AREA TO BE COMPACTED TO MINIMIZE SETTLING. 20.) 4" PVC WASTELINE SHALL BE SLEEVED WITH A 6" PVC PIPE WHEN WASTE PIPE IS WITHIN 10' OF WATER LINE. EXCAVATION NOTES 1) EXCAVATE ALL MATERIAL ABOVE SOIL HORIZON C (SEE DEEP OBSERVATION HOLE LOG) AT APPROXIMATE ELEVATION 9.1, FOR A LATERAL DISTANCE OF 5' (WHERE POSSIBLE) IN ALL DIRECTIONS BEYOND THE OUTER PERIMETER OF THE LEACHING AREA. 2) FILL MATERIAL SHALL CONSIST OF CLEAN GRANULAR SAND, FREE FROM ORGANIC MATTER AND OTHER DELETERIOUS SUBSTANCES, WHICH MEETS THE TEXTURAL CRITERIA PUT FORTH IN SECTION 15.255(3) OF TITLE 5. 3) SCARIFY THE BOTTOM SURFACE OF THE EXCAVATION PRIOR TO PLACEMENT OF FILL INTO THE RETAINING STRUCTURE. 4) PLACE FILL ONLY WHEN BOTTOM SURFACE IS DRY. D -Box Riser Extension to within 6" of grade PROVIDE INSPECTION PORTS TO WITHIN 3" OF FINAL GRADE 9" Minimum Cover to octuol D -box 10.35 INVERT EL 10,17 1 INVERT EL 6" STONE BASE INVERT EL 9 85 Proposed g,53 (DB 6) l 15'± l 15'± Longest Run FLOW PROFILE NOT TO SCALE NOTE: No existing abutting foundations within 20' of Leach Chambers Bed #5 `Bot Living coed #4 _.- Kitchen BeUnit 3 d #3 Kitchen Bot /Down Living Unit 2 Floor Plan Second Floor N. T. S. JUnitl Both Bed l#"�-�tBed#2 First Floor 11.9± Filter Fabric 12.5" THIRTY TWO (32) ADS ARC36LP LEACH CHAMBERS UNITS IN BED CONFIGURATION IN FOUR (4) ROWS OF EIGHT (8) UNITS - LEACH CHAMBERS THIRTY TWO (32) ADS ARC36LP UNITS 5.03' Top Concrete Bound EL= 4.5 Adjusted Ground Water EL= 1.9 Observed Ground Water EL= 1.4 Bottom Test Hole Leaching Field Detail N. T. S. 42.0" N O INSPECTION PORTS 3 Estimated High Groundwater Calculation Index Well # MIW - 29Zone A Date of Reading 8/16 Depth to Groundwater 9.63 Groundwater Adjustment 2.6 Actual Groundwater Level 1.9 Estimated High Groundwater 4.5 oa 01 ,e 0s cpo °c°' R°� Old Ma `, --- -- -----r Yarmouth, MA i; 0 Street 31 TBM EL = 11.74 S 86'05'30" E Pleasant 79.50' 11.7 1n 12 11.7 Willow Street Street Proposed "c) See _ _ 32 Infiltrator ARC 36LP / L- Note ° Leach Chambers o 1p 0, #t 9 �2.0 '4 occas�;