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Home My WebLink About25-271 Griffin T5 Site Plan rev 9-11-25LEGEN D --- 99 - EXISTING CONTOUR X 99.1 EXIST. SPOT ELEV. -[99_- PROPOSED CONTOUR 198.41 PROPOSED SPOT EL. TH1 TEST HOLE SLOPE OF GROUND Q> UTILITY POLE FIRE HYDRANT NOTE: NOT ALL SYMBOLS MAY APPEAR IN DRAWING TOWARD SITE EXCAVATION 2" X 2" X 36" WOOD POST 8' MAX. C.C. MIRIFI SILT FENCE OR EQU PROVIDE INSPECTION PORT TO GRADE 4" SCH40 PERFORATED PVC DOWN TO PROFILE SAND AT BOTTOM LEACHING FIELD, SYSTEM PROFC PROVIDE 4" THREADED COVER AND 4" VENT, PERF. 41 CHRISTY G03 CAST IRON ACCESS RUNS ABOVE 2" ALARM AND CONTROL PANEL (NOT TO SCALE) PORT H-20 CONSTRUCTION. PROVIDE CHARCOAL FILTER TO BE INSTALLED INSIDE ALL SYSTEM COMPONENTS SHALL BE AND INSECT SCREEN TOP FOUND. EL. 9.7' BUILDING. ALARM TO BE ON MARKED WITH MAGNETIC TAPE OR DRILL LAST HOLE IN EACH SEPARATE CIRCUIT FROM PUMP --_,_COMPARABLE MEANS FOR FUTURE LOCATION. FEMALE ADAPTOR & THREADED PLUG ALL WIRING TO CODE.PRECAST H-10 LATERAL ON TOP TO VENT 2 0°'0 THREADED END CONNECTION 8.4' MINIMUM .75' OF COVER OVER PRECAST $ 5' R2so Rs (Trn.) 2% SLOPE REQUIRED OVER SYSTEM AIR WHILE LATERAL FILLS SCH 40 PVC 8W PROVIDE QUICK DISCONNECT FOR PUMP 1 4 SHIELDED INV. IN 5.98' ORIFICES 7.84' _ FLOAT SWITCH 1500 GAL. H-10 S T "2 PRESSURE LINE INV. 7.67' o I SETTINGS: 550 GAL.+ SLOPE TO DRAIN BACK o 0 0000 0 00 0 , 10" EXISTING 14" ALARM ON 2" PRESSURE LINE �0-- -- - _ �� _ _- a of TEE 1000 GAL. TEE t*6 0' RESERVE 0.25" WEEP HOLE 2.0" INVERTS LEVEL AT 7.67' SEPTIC TANK** PUMP ON CHECK VALVE \ ZABEL FILTER A180O 4" WORKING RANGE BOTTO3 I 2" CENTRAL FED MA FOMD LEACHING LEVEL AT EL. 7.17' ( ) - MYERS SRM 4 OUTLET TEE W/EXTENSION 4 SUBMERSIBLE 4/10 HP PITCH TO DRAIN BACK TO CONNECT ENDS PUMP OFF 18" SYSTEM (OR EQUAL) PUMP CHAMBER- NO LOW SPOTS. 4.0' SEE NOTE 16 °°°°°°°°°°°° ° °°° ° °°°°°° °°°°°°°°°°°°°°°O°°°°°°°°°°°°°°°°°°°°° °°°°° ° 3/4" TO 1 1/2" DOUBLE WASHED STONE ° °°°°°°°°°°°°°°°°°°°°°°°°° °°°°°°°°°° **INSTALLER SHALL CONFIRM MINIMUM SEPTIC SIDE ELEVATION VIEW TANK SIZE AT 1000 GALLONS AND ITS SUITABILITY FOR RE -USE. REPLACE WITH 6" CRUSHED STONE OR MECHANICAL 1500 GALLON SEPTIC TANK APPROPRIATE TO COMPACTION. (15.221 [2]) ADJUSTED GROUNDWATER EL. 3.17' SITE CONDITIONS IF NOT SUITABLE ( 1 % SLOPE MIN.) LEACHING BUOYANCY CALCS: WD. POST FOUNDATION EXIST. SEPTIC TANK 2' PUMP CHAMBER 14' FACILITY H-10 1500 GAL. PUMP CHAMBER WEIGHS 12,000 LBS *THE INSTALLER SHALL VERIFY THE 10.5' x 5.67' x 0.9' x 62.4 = 3,344 LBS UP (OK) LOCATIONS OF ALL UTILITIES AND ALL BUILDING SEWER OUTLETS AND ELEVATIONS PRIOR TO INSTALLING ANY PORTION OF SEPTIC SYSTEM Y'jl,j PLAN VIEW 0 f !ij 1'0 COIR FIBER WATTLE NTS ll 10 METHOD FOR JOINING SILT FENCE SECTIONS I!! POSITION END POSTS TO OVERLAP AS SHOWN 777,7777 Ii� / �� ABOVE, MAKING CERTAIN THAT FABRIC FOLDS AROUND EACH POST AT LEAST ONE TURN NATURAL GRADE DRIVE POSTS TIGHTLY TOGETHER AND SECURE TOPS OF POSTS WITH CHORD OR WIRE TO PREVENT FLOW -THROUGH OF BUILT-UP EXCAVATED TRENCH SEDIMENT AT JOINT. COMPACTED BACKFILL NOTE: 1. EXCAVATE A 6" x 6" TRENCH ALONG SPECIFIED SILT FENCE LINE IMMEDIATELY AFTER CLEARING AND GRUBBING IS COMPLETE AND INSTALL SILT FENCE. 2. UNROLL SILT FENCE ONE SECTION AT A TIME. POSTS SHOULD BE POSITIONED ON DOWNSTREAM SIDE OF FENCE. 3. DRIVE POST INTO GROUND AND LAY THE TOE -IN FABRIC IN BOTTOM OF TRENCH. BACKFILL TRENCH, AND TAMP GROUND AS SHOWN IN DIAGRAM ABOVE. 4, REMOVE SILT AND DEBRIS BEFORE ONE FOOT ACCUMULATION OCCURS AT THE FENCE LINE. SILT FENCE INSTALLATION 1'- 0" Yarmouth Conservation Conditions: 1. A hard copy of the plan shall be provided to the Conservation Administrator for review. An electronic copy of the final plan shall be provided to bdirienzo@yarmouth.ma.us 2. The proposed sewage disposal system shall meet the applicable Title 5 wetlands setbacks as set forth by the Health Department. 3. A work limit line shall be established with Erosion Controls (Le straw bales, staked filter fabric, bark mulch, silt sacks, products made with rice straw, and other weed -free products or approved by the Commission.) Hay bales are not allowed. It is the applicant's responsibility to implement and maintain appropriate and adequate erosion controls measures throughout the construction process. 4. No work of any kind shall occur on the Resource Area side of the work limit line. This line shall be established prior to any construction or work. 5. All imported fill shall be clean and not contain any foreign debris such as cement, bituminous concrete, rubber, metal, trash, boulders, etc. 6. Debris, including litter, shall be picked up immediately. Any excess material that is excavated from the job site shall be disposed of at a location approved by the Conservation Administrator or in a covered dumpster. No debris shall be allowed in a Wetland or Waterway. 7. Washing of equipment/tools shall be done OFF -SITE or handled in a manner approved by the Conservation Administrator. 8. No equipment shall be refueled, nor shall fuel be stored within 100 feet of a resource area. 9. The cesspool is to be pumped dry, the connection broken, and filled with clean sand. 10.Any area that is disturbed during construction shall be revegetated immediately or as soon after as the growing season commences. Permanent stabilization shall be carried out in order to minimize erosion. 1 /4" 0 HOLE AT 5' O.C. ALTERNATE BETWEEN TOP & BOTTOM OF PIPE. EXACT DIAMETER HOLES SHOULD BE SHOP DRILLED WITH A DRILL PRESS TO ENSURE UNIFORMITY. REMOVE BURRS PRIOR TO PLACING PIPE. EXISTING 1ST FLOOR PLAN (NOT TO SCALE) 2.0"0 SCH-40 PVC LATERAL SNAP -ON l C SHIELD DRAINAGE SLOTS ORIFICE SHIELD OS200 ORENCO SYSTEMS INC PH. 1-800-348-9843 OR EQUAL. ORIFICE SHIELD DETAIL, NOT TO SCALE EXISTING 2ND FLOOR PLAN (NOT TO SCALE) NDER MAX. FEASIBLE COMPLIANCE 15.405: 1a): REDUCTION IN SETBACK, SAS TO PROPERTY LINE (10' TO 6.2' 1b): REDUCTION IN SETBACK, SAS TO FOUNDATION (20' TO 13.7') 1c): 25% REDUCTION IN REQUIRED SUBSURFACE DISPOSAL AREA 744 S.F. TO 570 S.F.) 1h): REDUCTION IN THE REQUIRED SEPARATION DISTANCE FROM HE BOTTOM OF THE SAS TO HIGH GROUNDWATER (5' TO 4') 'ARIANCES REQUESTED: NDER TOWN OF YARMOUTH SEWAGE DISPOSAL REGULATIONS: Z 7N. or-miIf-Tl/lAI Ill f`CT0Ar L/ CAC muw f4nr%l Tn CIA C"\ WORK-11MIT/ SEE LINE SILT NOT INSPECTION PORT FENCE LEAVE OPENING FOR WALKWAY �\ .' ! �� 38.0' f/ L CAP (TYP.) SYSTEM DESIGN: GARBAGE DISPOSER IS NOT ALLOWED EXISTING 5 BEDROOM DWELLING DESIGN FLOW: 5 BEDROOMS @ 110 GPD = 550 GPD USE A 550 GPD DESIGN FLOW SEPTIC TANK: 550 GPD (2) = 1100 USE EXISTING 1000 GAL. SEPTIC TANK & USE A 1500 GAL. PUMP CHAMBER LEACHING: 550 GPD (.74) = 744 SF REQUIRED 744 SF x 0.75 = 558 SF (25% REDUCTION VARIANCE) 15' X 38' = 570 SF OK 570 SF X .74 = 421 GPD OK (25% REDUCTION VARIANCE) USE A 15' X 38' PRESSURE DOSED LEACHING FIELD VENT LEACHING DETAIL \�0 (SCALE: 1 "=10') NOTES 1. DATUM IS NAVD 88 2. MUNICIPAL WATER IS EXISTING 3. MINIMUM PIPE PITCH TO BE 1 /8" PER FOOT. 4. DESIGN LOADING FOR ALL PROPOSED PRECAST UNITS TO BE AASHO H-Q 5. PIPE JOINTS TO BE MADE WATERTIGHT. 6. CONSTRUCTION DETAILS TO BE IN ACCORDANCE WITH 310 CMR 15.000 (TITLE 5.) 7. THIS PLAN IS FOR PROPOSED WORK ONLY AND NOT TO BE USED FOR LOT LINE STAKING OR ANY OTHER PURPOSE. 8. PIPE FOR SEPTIC SYSTEM TO SCH. 40-4" PVC. 9. COMPONENTS NOT TO BE BACKFILLED OR CONCEALED WITHOUT INSPECTION BY BOARD OF HEALTH AND PERMISSION OBTAINED FROM BOARD OF HEALTH. 10. CONTRACTOR SHALL BE RESPONSIBLE FOR CALLING DIGSAFE (811) AND VERIFYING THE LOCATION OF ALL UNDERGROUND & OVERHEAD UTILITIES PRIOR TO COMMENCEMENT OF WORK. 11. ANY UNSUITABLE MATERIAL ENCOUNTERED SHALL BE REMOVED BENEATH AND 5' AROUND THE PROPOSED LEACHING FACILITY. 12. EXISTING LEACHING FACILITY SHALL BE PUMPED AND REMOVED OR PUMPED AND FILLED WITH CLEAN SAND, 13. OWNER'S ENGINEER TO PERFORM INSPECTIONS OF THE FINAL INSTALLATION. MINIMUM OF 24 HOURS NOTICE REQUIRED. 14. WETLAND FLAGGED BY BRAD HALL OF BLH ENVIRONMENTAL CONSULTING ON 8/7/2025. 15. INSTALLER TO VERIFY THE ELECTRICAL SYSTEM IS SUITABLE FOR PUMP CONNECTION. ELECTRICAL PERMIT REQUIRED. 16. ZABEL FILTER TO BE INSTALLED IN EXISTING SEPTIC TANK OUTLET TEE, ACCESS FOR ROUTINE MAINTENANCE MUST BE PROVIDED FOR ZABEL FILTER. INSTALLER MUST FOLLOW MANUFACTURER'S SPECIFICATIONS FOR PROPER FILTER INSTALLATION, INSTRUCT OWNER ON MAINTENANCE. 17. 5' REMOVAL OF UNSUITABLE SOIL REQUIRED AROUND PERIMETER OF LEACHING FACILITY, DOWN TO SUITABLE SOIL LAYER. REPLACE WITH CLEAN MED. SAND, TO MEET SPECIFICATIONS OF 310 CMR 15.255(3). 18. PROVIDE 142' OF 40 MIL LINER AT 5' OFF SAS IN AREA SHOWN. TOP AT ELEV. 7.9', BOTTOM AT EL. 3.9't. 19. PROPOSED VENT WITH CHARCOAL FILTER AND BUGSCREEN (FINAL PLACEMENT BY CONTRACTOR WITH HOMEOWNER CONSULTATION). 20. 10' OF SEPARATION REQUIRED BETWEEN WATERLINE & SEPTIC SYSTEM COMPONENTS, SLEEVE SEPTIC LINES WITHIN 10' OF WATERLINES. 21. EXISTING 1000 GAL. SEPTIC TANK TO REMAIN. �e o�nPs Q 0 r a �o or Lewis Lewis pond Bay �'odTo Power Locus Nantucket \Or � \5 Sound f/ LOCUS MAP SCALE 1 "=2000't ASSESSORS MAP 14 PARCEL 4 LOCUS IS WITHIN FEMA FLOOD ZONE AE (EL. 11) & FLOOD ZONE AE (EL. 13) AS SHOWN ON COMMUNITY PANEL #25001CO588J DATED 7 /16 /2014 SITE IS WITHIN MASSDEP DESIGNATED NSA SITE IS NOT WITHIN STATE DESIGNATED ZONE II TEST HOLE LOGS ENGINEER: PHELLYP T. TONIAL, SE #14955 WITNESS: BARRY LEWIS DATE: 8/22/2025 PERC. RATE = < 2 MIN/INCH CLASS I SOILS F7 UNSUITABLE SOIL 25 50 75 100 CAPACITY - GPM PUMP CURVE FOR MYERS SRM4 4/10 NP PUMP 2" PRESSURE LINE BACK Tn DI IAAD • 9 DATE DANIEL A. OJALA, P.E., P.L.S. PEF 4 ELEV. 1 0" 7.2' G-W ADJ. DATA: WELL: MIW-29 ZONE: A ADJ: 2.3' AUG 2025 100" 1 I -1.1 ' GROUNDWATER ENCOUNTERED @ 76" EL. 0.87' -70 f" _ kkk I T E 11 AN DATE: SEPTEMBER 9, 2025 DATE: SEPTEMBER 11, 2025 (BUOYANCY CALCS) Scale: 1 "= 20' 0 20 30 40 50 FEET 508-362-4541 downcape.com @ down cape engineering, Inc. civil engineers land surveyors 939 Main Street (Rte l YARMOU THPOR T MA 02675 SURVEY: NHO DRAFTED BY: PTT CHECKED BY: 25-271.DWG J DCE #25-27