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HomeMy WebLinkAbout1149 Great Island Road Proposed Sewage Disposal SystemPROFILE OF SYSTEM - NO SCALE PROVIDE 20" MIN. DIA. WATERTIGHT ACCESS MANHOLE AND COVER CONSTRUCTED OF DURABLE MATERIAL BROUGHT TO WITHIN 3" OF FINISHED GRADE. THE SEPTIC TANK INLET AND OUTLET COVERS MUST NOTE WITH PERMANENT MARKINGS THAT THE SYSTEM IS EQUIPPED WITH A ZABEL FILTER. FG ® SP1 = EXISTING FG ® SP2 = 10x6 FG= 3" MIN. �I AIR SPACE F _ ,.- 9x5 MIN. SPY EXISTING INV -6.2 (SEE NOTE 19) SP2 PROPOSED INV=8.0 INV. = 4" SCH.-40 PVC VENTED INVERTED "U' 25' SPI 4 53' SP2 6"MIN. I L I I 6" MIN. 6" OF' 300 DOp DO Do pQ 00000,QD�oC13 Do 000006 S ONE 61OWV0000 SEPTIC TANK (H-20) gOoQoo&"DQ CAPACITY = y00- GALLONS PRECAST REINFORCED CONCRETE NOTE: UNLESS OTHERWISE NOTED, ALL PIPE TO BE 4" DIAM. PVC TIGHT JOINT SCH. 40 3.67' OF STORAGE FG= 9x6 MAX. EXISTING = 1,372 GALS. (1.2 DAYS t) J'ITY'=�IIr', Lu INV. _ --'�4�-- INLET INV. = 5.37 ._ RAIL SYSTEM PROVIDE ZABEL EFFLUENT f TEE OR APPROVED EQUAL ALARM ON ELEV. = 1.73 10 PUMP ON ELEV. = 1.56 �.� DRAW DEPTH = 0.74' (3) MERCURY 278 GALS. FLOAT SWITCHES TYPICAL PUMP OFF ELEV. = 0.82 Z 5' �- BOTTOM OF PUMP o CHAMBER ELEV. = -0.18 6" OF doo oodo oa 0Q0 oovoado$oca oo$oc STONE vvoFROPOSED H-20 PUMP CHAMBER-'( BELOW vo CAPACITY = -244Q- GALLONS "c" DIMENSIONS SHOWN ARE BASED ON SHOREY PRECAST CONCRETE PRODUCTS. ITEM # ST -2,000-H-20 (OR APPROVED EQUAL). PLOT PLAN FG=12.6 MIN. PROVIDE RISER AND COVER TO r-�uli I� WITHIN 6" OF FINISHED GRADE PROVIDE INV. _ TEE f�F­2' • l 1 nn 2" PVC QUICK o s _� Z .•.. - :. _• FLOW - 6. OF Ge DO STONE 2" SDR -21 PVC, FORCE MAIN pp po aosELowo$) / TO D -BOX 57, LINE DISTRIBUTION BOX (H-20) DEPTH FROM 2"MIN. 2" PVC BALL VALVE _9__ INVERT ELEVATIONS OF ALL 1/4" WEEPHOLE OUTLETS TO BE THE SAME 2" PVC, BALL CHECK VALVEUNUSED 3" MAX SURFACE (IN) a, BAFFLE OUTLET PIPES SHALL BE LEVEL SUBMERSIBLE SEWAGE FOR AT LEAST TWO FEET EJECTOR PUMP 11.7-10.9 0-10 A SANDY LOAM COMP. J/1 NO SANDY LOAM COMP /f2 10.9-9.4 10-27 =2200 GAL SANDY LOAM 10 YR 5/6 =1212 GAL 10 YR 6/6 MASSIVE, FRIABLE 9.4-8.2 27-42 CI SANDY LOAM •� 10' INLET NO 5.5' OUTLET 8.2-3.7 42-96 C2 SANDY LOAM 6" OF' 300 DOp DO Do pQ 00000,QD�oC13 Do 000006 S ONE 61OWV0000 SEPTIC TANK (H-20) gOoQoo&"DQ CAPACITY = y00- GALLONS PRECAST REINFORCED CONCRETE NOTE: UNLESS OTHERWISE NOTED, ALL PIPE TO BE 4" DIAM. PVC TIGHT JOINT SCH. 40 3.67' OF STORAGE FG= 9x6 MAX. EXISTING = 1,372 GALS. (1.2 DAYS t) J'ITY'=�IIr', Lu INV. _ --'�4�-- INLET INV. = 5.37 ._ RAIL SYSTEM PROVIDE ZABEL EFFLUENT f TEE OR APPROVED EQUAL ALARM ON ELEV. = 1.73 10 PUMP ON ELEV. = 1.56 �.� DRAW DEPTH = 0.74' (3) MERCURY 278 GALS. FLOAT SWITCHES TYPICAL PUMP OFF ELEV. = 0.82 Z 5' �- BOTTOM OF PUMP o CHAMBER ELEV. = -0.18 6" OF doo oodo oa 0Q0 oovoado$oca oo$oc STONE vvoFROPOSED H-20 PUMP CHAMBER-'( BELOW vo CAPACITY = -244Q- GALLONS "c" DIMENSIONS SHOWN ARE BASED ON SHOREY PRECAST CONCRETE PRODUCTS. ITEM # ST -2,000-H-20 (OR APPROVED EQUAL). PLOT PLAN FG=12.6 MIN. PROVIDE RISER AND COVER TO r-�uli I� WITHIN 6" OF FINISHED GRADE PROVIDE INV. _ TEE f�F­2' • l 1 nn 2" PVC QUICK INV. 6' 1p- / DISCONNECT UNION _� Z .•.. - :. _• JOB: 0-10552 6. OF Ge DO STONE 2" SDR -21 PVC, FORCE MAIN pp po aosELowo$) / TO D -BOX 57, BOH DISTRIBUTION BOX (H-20) DEPTH FROM OUTLETS 2" PVC BALL VALVE _9__ INVERT ELEVATIONS OF ALL 1/4" WEEPHOLE OUTLETS TO BE THE SAME 2" PVC, BALL CHECK VALVEUNUSED OUTLETS SHALL BE SURFACE (IN) PLUGGED WITH HYDRAULIC CEMENT 0.5 H.P. HEAVY DUTY OUTLET PIPES SHALL BE LEVEL SUBMERSIBLE SEWAGE FOR AT LEAST TWO FEET EJECTOR PUMP 11.7-10.9 SCALE: 1 in. = 30 ft. ASSESSOR'S MAP 4 PARCEL 10 LEGEND LOT AREA: 3.339 ACRES± 1' PROPOSED CONTOUR LINE I SP � 1 EDGE OF 2 ---XX--- EXISTING CONTOUR MARSH © EXISTING CESSPOOL m W - WATER LINE 0o PROPOSED 2000 GALLON SEPTIC TANK Qoo PROPOSED 2000 GALLON PUMP CHAMBER FLAG O PROPOSED DISTRIBUTION BOX ® PROPOSED LEACHING BED \ 11 x ! EXISTING SPOT ELEVATIONS _ __-- Lft TEST HOLE LOCATIONS P PROPERTY LINE !1 x ! PROPOSED SPOT ELEVATION "--- / -OH- OVERHEAD UTILITIES `� "'- ' ( �T sl. -UGI- iiL UNDERGROUND UTILITIES - -��I I I \ FG FINISHED GRADE ( UP UTILITY POLE COAOALBp1yK' PATIO J PATIO,'• TOF TOP OF FOUNDATION ELEVATION r \ / *IP INSPECTION PORT �j ( /1149 ;\, EDGE OF / O EXISTING \ MARSH L r)WrLLING -CO TOP �p.Lr'� N LAMPw. SILL=112 ASTgL B N�� SILL 8.3 1n =1- __ I RELt�CATE �Q�- FL000 ZONE �/ UNDERGROUNDS "Al:1 UTILITIES PROPOSED / o :. o' \ aF N / \ I l Q X. EROSION I r - \ \ O/ h yt j1 )- CONTROL -- 150' FROM WELL o� ? LAMP, STE S /x'100' FROM THE TOP �h ••�.. \C.. # d OF COASTAL BANfV ELEC. BOX ,,, S '�.., \: \yam \ 1 I afr I RESERVE_- ;w o n D.� s o•I / AREA L 17' MAX. BEGINNING OF LEACH LINE SEE DETAIL 'REINFORCED GRASS ACCESS ROAD" FOR ANY PORTION OF THE LEACHING AREA EXPECTED TO BE USED FOR PARKING MIRAFI 60OX STABILIZATION FABRIC 4" MIN LOAM AND SEED WITH CONSERVATION MIX GRASS SEED DEEP TEST HOLE OBSERVATION LOG #1 DATE: 2/20/08 DATE: 2/20/08 JOB: 0-10552 JOB: 0-10552 PERFORMED BY: LAURA SCHOFIELD WITNESSED BY: PERFORMED BY: LAURA SCHOFIELD WITNESSED BY: AMY VON HONE, YARMOUTH BOH ELEVATION DEPTH FROM SOIL SOIL TEXTURE SOIL COLOR SOIL SURFACE (IN) HORIZON (FT) SURFACE (IN) HORIZON (USDA) (MUNSELL) MOTTLING A OTHER 11.7-10.9 0-10 A SANDY LOAM 10 YR 3/3 NO SANDY LOAM MASSIVE. FRIABLE 10.9-9.4 10-27 B SANDY LOAM 10 YR 5/6 NO 10 YR 6/6 MASSIVE, FRIABLE 9.4-8.2 27-42 CI SANDY LOAM 10 YR 5/4 NO NO MASSIVE, FRIABLE 8.2-3.7 42-96 C2 SANDY LOAM 10 YR 5/3 NO SGP, LOOSE SPK, EX. FIRM 3.7-(-0.3) 96-144 C3 SAND, MED NO PARENT GEOLOGICAL MATERIAL GLACIAL OUTWASH SGR, LOOSE WEEPING FROM FACE: DEPTH TO BEDROCK.: N/A ESTIMATED SEASONAL HIGH GROUNDWATER AT EL . 3.5 (INCLUDES A 1.6' CORRECTION FACTOR) 10 YR 6/3 MED. - COARSE PARENT GEOLOGICAL MATERIAL: GLACIAL OUTWASH STANDING WATER IN HOLE: 123" WEEPING FROM FACE: DEPTH TO BEDROCK: N/A ESTIMATED SEASONAL HIGH GROUNDWATER AT EL. a 3.1 (INCLUDES A 1.6' CORRECTION FACTOR) PERCOLATION TEST: PERC. RATE < 2 MPI (ASSUMED) SEE DETAIL 'REINFORCED GRASS ACCESS ROAD" FOR ANY PORTION OF THE LEACHING AREA EXPECTED TO BE USED FOR PARKING MIRAFI 60OX STABILIZATION FABRIC 4" MIN LOAM AND SEED WITH CONSERVATION MIX GRASS SEED ` c ' a ---- 7- - 49.0' PROFILE VIE1Y 2" CLEAN SAND .. ,.. ,.. ,.:; 4" CLEAN SAND 45' 12" MIN. 8" COMPACTED GRAVEL BASE CLEAN SAND BOTH SIDES NOTES: THE COMPACTED GRAVEL BASE SHALL CONFORM TO MASS. HIGHWAY DEPT. EC. M1.03.1 FOR DENSE GRADE BASE GRAVEL, WITH NO STONES LARGER THAN INCHES AND SHALL BE COMPACTED IN TWO FOUR INCH LIFTS. REINFORCED GRASS ACCESS ROAD TEL. RISER UGu `••� Oma`' -- - -=z .;y`� '�� \�`� i.. 23' I•• oti4� _ �' li •�.. _ _ I /\ �� �, P, a o FLOOD ZONE O _ - - -81.27'-W _ �W _ i ; -E� ���� , .' o /�"Al2" (EL:12) //3wN/ 1 �/ Y 100' FROM THE EDGE 1 O' FROM BORDERING '•�� / \ •\•/ i OF SALT MARSH PROPOSED - PROPOSED �VEGETATED WETLAND �- WELL / WATER LIN \ DRIVEt AY 3 /- --E DRI OUSE LIMIT OF /PROPOSED � I' OVERDIGEROSION/ .,�•' PROPOSED\SQUARE CONTROL U _ ---�� �- EROSION STONE 1 I, CONTROL % •� ��' \ LIMIT OF FLOOD / / / �tibe\: \ ` , z PROPOSED - _ F _ / ZONE "V15" _ A EROSION �� / C• A- �_ i CONTROL FLOOD ZONE BENCiMARK: TOP OF /PROPOSED "Al2" ._ "Al2" (EL: 10) > 12" GALVANIZED SPIKE. _ DRIVEWAY i_- _ \�, // _ I ` EL: =10.91 NGVD 1929 EDGE OF - _WF 1 "�! VEGETATED WETLAND' ls- / -- - ---WF-2 _-WF 3 NATURAL GRADE -1 II I1 WATER SURFACE EDGE Or \ WF 4 j ELEVATION = 5.7' POND \ ----- / �` ~ ^_ 'I / (2/04/08) �.\\'•\ -. '\t/,_, _ F1NiSHED GRADE POND _ 4 )x- �'i1F1�'ilGi'-11F1+91F1•+>11F1 PROVIDE •.� 63'29' ;�\. -- - - L. -! - - - -_ _ / % / / / 1 ERO 4" PERFORATED PVC RE -BAR FOR ''� �,� I f l J )�- THE WITH SCREW TYPE DETECTION .. J,. -�" i I _.'. CON CAP. RAISE TO WITHIN (TOP OF BAR ' I /"- �, i I T 3" OF FINISHED FLUSH WITH '\ / %/ ~� BY T GRADE 0 o PVC CAP) \ J / •' / -'t ` U Q r 2. P EXTEND PORT TO o o ,.__ LEACH FIELD 1 / 3. O Y A. U ` . BOTTOM OF LEACH o o� •\ { " I it ALL FIELD �oo \ 4. A OR TYPICAL INSPECTION PORT DETAIL \ I i " , =LL' ALL NO SCALE '�; z� I1 / 6. u VEG 4" L,,.,, (NO SCALE) H- z w m w Q D w w 0 1.5" BIT. CONC. SURFACE COURSE 2" BIT. CONC. BASE COURSE 12" GRAVEL BASE PREPARED SUBGRADE COMPACTED BACKFILL COMPACTED SELECT BACKFILL FORCE MAIN COMPACTED APPROVED GRAVEL BACKFILL 18" MIN. TYPICAL FORCE MAIN BEDDING DETAIL STAKED HAYBALE EROSION CONTROL BARRIER DETAIL HAY OR 5rnaw i STAKED HAYBALES (NO SCALE) PSp pRBp�.F. TAMPED / -\� FLOW SOIL --`\ 2" x 2" STAKES DRIVEN 12" MIN. INTO THE GROUND TAMPED J SION CONTROL NOTES SOIL FOLLOWING ARE GENERAL EROSION CONTROL SPECIFICATIONS TO BE EMPLOYED WHEN CONS WORK IS TO TAKE PLACE ON SITE HE CONTRACTOR SHALL OBTAIN AND BECOME FAMILIAR WITH THE ORDER OF CONDITIONS ISSUED HE TOWN OF YARMOUTH CONSERVATION COMMISSION REGARDING WORK IN AND AROUND THE VS PROPERTY. Pi TO ANY DISTURBANCE OR ALTERATIONS OF ANY AREA ON THE SITE, A STAKED HAYBALE MENT BARRIER OR SILT FENCE SHALL BE INSTALLED AS SHOWN HEREON. NCE INSTALLED, THE STAKED HAYBALE SEDIMENT BARRIER SHALL BE MAINTAINED IN PLACE UNTIL AREAS UPGRADIENT FROM THE BARRIER HAVE BEEN STABILIZED AS SPECIFIED HEREIN. LL DISTURBED AREAS NOT OTHERWISE DEVELOPED OR WHERE SPECIAL STABILIZATION MEASURES LANDSCAPE PLANTINGS ARE NOT PROPOSED SHALL BE LOAMED AND SEEDED OR SODDED. APPLY R INCHES OF LOAM TOPSOIL (MIN.), UNLESS OTHERWISE SPECIFIED. LL AREAS OUTSIDE THE LIMIT OF WORK ARE TO BE LEFT UNDISTURBED. DURING THE SITE WORK, PERSONS AND EQUIPMENT SHALL STAY OUT OF THESE AREAS AND PRESERVE THE EXISTING ETATION. PON FINAL GRADING, DISTURBED AREAS SHALL BE SEEDED WITH AN APPROPRIATE SEED MIX. FILE 4" SCH-40 PERFORATED PVC DISTRIBUTION LINES - PERFORATIONS TO BE EVENLY SPACED ALONG NINE ROWS RUNNING THE LENGTH OF THE PIPE ON EACH SIDE BETWEEN THE INVERT AND THE CENTERLINE WHICH SEPARATES THE UPPER AND LOWER HALVES OF THE PIPE. PERFORATIONS SHALL HAVE A DIA. OF 3/8" TO 5/8" FG=VARIES FG= 12x0 2" LAYER OF 1/8" - 3/8" DOUBLE WASHED STONE I END OF '_ , LEACH IN I L E INV=9.50 r •-� ^` ',, TO BE CAPPED 1.5' 3.5' 3S' 3.5' 3/4" - 1.5" DOUBLE WASHED STONE BOTTOM OF BED ELEV=8.5 A VARIANCE IS REQUESTED FROM THE YARMOUTH BOARD OF HEALTH REQUIREMENTS AS FOLLOWS: (3.7) FOUNDATION OF DWELLINGS SHALL NOT BE LESS THAN 2 FEET ABOVE THE HIGHEST POINT OF THE ROAD AFFRONTING EACH LOT. THE HIGH POINT IN THE ROAD IS EL 17.2, APPROX. 560 FEET WEST OF THE PROPCSED BUILDING. THE PROPOSED TOP OF FOUNDATION ELEVATION VARIES BETWEEN 12.1 TO 11.1. FINISHED GRADING IS TO SLOPE AWAY FROM BUILDINGS FOR A DISTANCE OF TEN FEET, MINIMUM. 1. GENERAL FURNISH AND INSTALL ONE COMPLETE PUMPING SYSTEM CONSISTING OF ONE SUBMERSIBLE SEWAGE PUMP AND MOTOR, DISCHARGE PIPING AND VALVES, MERCURY FLOAT SWITCHES LEVEL CONTROLS, HIGH WATER ALARM, SIMPLEX CONTROL PANEL AND A PRECAST CONCRETE TANK. ALL EQUIPMENT SHALL BE INSTALLED IN ACCORDANCE WITH THE MANUFACTURER'S SPECIFICATIONS AND. WARRANTED FOR A PERIOD OF AT LEAST ONE YEAR. UPON COMPLETION OF THE INSTALLATION, THE CONTRACTOR SHALL PROVIDE A SUFFICIENT QUANTITY OF CLEAN WATER TO CONDUCT PUMP OPERATION TESTS. 2. DOSING CHAMBER (PUMP STATION) - THE PUMP CHAMBER SHALL BE A PRECAST CONCRETE STRUCTURE AS SHOWN ON THE DETAIL. USE A 2000 GALLON SEPTIC TANK. USE ST -,2000-H-20 _•(H, 20 MIN. LOADING) AS MANUFACTURED BY SHOREY OR AN APR.ROVED EQUAL. 3. PUMP AND MOTOR PUMP AND MOTOR SHALL BE HEAVY DUTY SEWAGE -TYPE EJECTOR WITH A 2 -INCH DISCHARGE. PUKP AND MOTOR SHALL BE FULL" - SUBMERSIBLE AND SHALL OPERATE AT 1750 RPM WITH A 115V, 60 CYCLE, SINGLE PHASE AC POWER SOURCE. THE ELECTRICAL CONTRACTOR SHALL VERIFY THAT PROPER VOLTAGE IS AVAILABLE AT THE CONTROL. PANEL. USE A MYERS WHR5 OR AN APPROVED EQUIVALE Yarmouth Health THE PUMP SHALL BE RATED AS FOLLOWS: A) 0.50 HP A n 7•f R 8 71 GALLONS PER MINUTE Lim C 17.0 FEET TOTAL DYNAMIC HEAD 4. LEVEL CONTROLS me SEALED FLOAT -TYPE MERCURY SWITCHES SHALL S r u v CONTROL THE SUMP LEVEL AND ALARM SIGNAL. TWO FLOAT SWITCHES SHALL BE USED TO CONTROL THE SUMP LEVEL: ONE FOR FOR PUMP "OFF" AND ONE FOR PUMP "ON". A THIRD SWITCH SHALL BE PROVIDED WITH A POWER SOURCE SEPERATE FROM THE PUMP POWER AND SHALL BE FOR THE ALARM UNIT. A NEMA -4 JUNCTION BOX FOR THE FLOAT SWITCHES SHALL BE INSTALLED ABOVE THE HIGH WATER LEVEL. THE FLOAT LEVEL CONTROLS SHALL BE SET TO OPERATE AT THE ELEVATIONS INDICATED ON THE PLINS. 5. CONTROL PANEL THE SIMPLEX CONTROL PANEL SHALL BE EQUIPPED WITH A RUN LIGHT FOR THE PUMP, PROPERLY SIZED CIRCUIT BREAKERS, A TRANSFORMER TO GIVE PROPER VOLTAGE TO THE CONTROL CIRCUITS AND A THREE-WAY PUMP CONTROL SWITCH. THE SWITCH POSITIONS ARE AS FOLLOWS: 1) PUMP OFF, 2) AUTOMATIC PUMP ON, AND 3) MANUAL PUMP ON. THE SIMPLEX CONTROL PANEL SHALL BE FOR A 115 V, 60 CYCLE, SINGLE PHASE AC POWER SUPPLY AND HOUSED IN A NEMA -1 ENCLOSURE. THE PANEL SHALL BE INSTALLED IN A SUITABLE LOCATION INSIDE THE BUILDING APPROVED BY THE HOMEOWNER. 6. ALARM A HIGH WATER ALARM SHALL BE SUPPLIED WITH BOTH AN AUDIBLE AND VISUAL ALARM WITH A SEPARATE POWER SUPPLY FROM THE PUMP. THE ALARM SHALL BE MOUNTED IN A NEMA -4 ENCLOSURE SEPARATE FROM THE MAIN PUMP CONTROL PANEL. AN ALAPM SILENCER BUTTON SHALL BE PROVIDED TO SILENCE THE AUDIBLE ALARM WHILE THE VISUAL ALARM REMAINS LIT UNTIL MANUALLY RESET. THE PAWL SHALL BE LOCATED ON THE OUTSIDE OF THE BUILDING AT A LOCATION APPROVED BY THE HOMEOWNER 7. PIPING THE PUMP STATION DISCHARGE PIPING, FITTINGS AND SEWAGE FORCE MAIN SHALL BE 2 -INCH 200 PSI SDR -21 PVC. WITHIN THE PUMP CHAMBER, THE DISCHARGE PIPING SHALL INCLUDE THE FOLLOWING: 1) IN THE VERTICAL POSITION: A 2 -INCH BALL - TYPE, CHECK VALVE; AND 2) IN THE HORIZONTAL POSITION: A 2 -INCH BALL VALVE, AND A 2" QUICK DISCONNECT UNION. PIPING AND VALVES SHALL BE ARRANGED SO THAT THEY ARE EASILY ACCESSIBLE FROM THE PU14P CHAMBER MANHOLE COVER. FORCE MAIN SHALL BE LAID IN A "CLASS B" TRENCH BEDDING . ALL PIPING OUTSIDE THE PUMP CHAMBER WHICH IS LESS THAN FOUR (4) FEET BELOW FINAL FINISHED GRADE SHALL BE SURROUNDED WITH A MINIMUM OF TWO (2) INCHES OF RIGID STYROFOAM INSULATION. PROVIDE CONCRETE THRUST BLOCMNG AT ALL -FORCE MAIN BENDS WITH MINIMUM SOIL BEARING SURFACE AREA OF ONE SQUARE FOOT. 8. DOSING REQUIREMENTS PURSUANT TO 310 CMR 15.254 DOSING: THE SYSTEM HAS BEEN DESIGNED TO PROVIDE 4 DOSES PER DAY EQUAL TO 278 GALLONS PER DOSE. THIS VOLUME IS BASED ON A DESIGN FLOW OF 1100 GALLONS PER DAY DIVIDED BY 4, AND A FORCE MAIN FLOW -BACK VOLUME OF 12 GALLONS PER DOSE. ADDITIONAL STORAGE PROVIDED IN THE PUMP CHAMBER, ABOVE THE HIGH WATER LEVEL IS APPP.OPAATELY 1372 GALLONS. IN THE EVENT OF A POWER FAILURE, THIS IS SUFFICIENT CAPACITY TO PROVIDE FOR APPROXIMATELY 28 HOURS Oi' STORAGE, BASED ON ESTIMATED PEAK DAILY FLOW. 9. CONCRETE SEALANT EXTERIOR SURFACES OF THE PUMP CHAMBER, AND SEPTIC TANK SHALL BE SEALED WITH KAPPER'S BITUMASTIC TAR EPDXY OR APPROVED EQUAL. THICKNESS OF THE EPDXY SHALL BE 6 MIL (TWO COATS). LOCUS MAP SCALE: 1 in. = 2000 ft. FG=12x3 BREAKOUT FG= 12xO ELEV= 10.25 A r J. 3.5' 1 3.5' 1 3.5 31' CROSS-SECTION VIEW YARMOUTH BOARD OF HEALTH DATE: _ GENERAL NOTES I. ELEVATIONS REFER TO NGVD 1929, SEE BENCHMARK ON PLAN 2, ALL CONSTRUCTION AND MATERIALS TO CONFORM TO TITLE 5 OF THE MASSACHUSETTS STATE ENVIRONMENTAL CODE AND THE BOARD OF HEALTH REQUIREMENTS FOR THE TOWN OF YARMOUTH, 3. ANY CHANGES TO THIS PLAN MUST BE APPROVED BY THE BOARD OF HEALTH AND SCHOFIELD BROTHERS OF CAPE COD. 4_ FOR PROPER PERFORMANCE, THE SEPTIC TANK SHOULD BE INSPECTED AT LEAST ONCE PER YEAR. THE TANK SHOULD BE PUMPED WHEN THE TOTAL DEPTH OF SCUM AND SOLIDS EXCEEDS 1/3 OF ITS LIQUID DEPTH. 5. SCHOFIELD BROTHERS OF CAPE COD DOES NOT ASSUME RESPONSIBILITY FOR MATERIALS ENCOUNTERED DURING EXCAVATION. 6. ALL UNSUITABLE OR DELETERIOUS MATERIAL ENCOUNTERED MUST BE EXCAVATED AND REMOVED TO A HORIZONTAL DISTANCE OF 5' FROM ALL SIDES OF THE SOIL ABSORPTION SYSTEM. BACKFILL MUST BE CLEAN SAND MATERIAL MEETING TITLE 5 SPECIFICATIONS TO AN ELEVATION OF 10.25. CONTACT SCHOFIELD BROTHERS IF ANY DOUBT OR QUESTIONS Departmen ARISE REGARDING SOIL QUALITY. 1�,.,INSTALLATION CONTRACTOR SHALL CONTACT SCHOFIELD BROTHERS FOR �/D EXCAVATION INSPECTION AND PRIOR TO BACKFILLING FOR SYSTEM CERTIFICATION. (f EXISTING CESSPOOL IS TO BE PUMPED, ABANDONED AND COLLAPSED OR FILLED WITH CLEAN SAND. Date EXISTING & PROPOSED BUILDING SEWER INVERTS SHALL BE VERIFIED FIELD PRIOR TO COMPONENT INSTALLATION. CONFIRM PLUMBING CHANGES WITH PLUMBER PRIOR TO INSTALLATION OF ANY COMPONENTS. CONTACT SCHOFIELD BROTHERS IF SIGNIFICANT DISCREPANCIES EXIST. 10. SITE RESTORATION REQUIRES ALL STRIPPED TOPSOIL AND SUBSOIL TO BE STOCKPILED AND REUSED AT OWNERS OPTION. RE -SPREAD OVER DISTURBED AREAS TO PROMOTE OPTIMAL GROWTH. 11. ALL SEPTIC SYSTEM COMPONENTS ARE DESIGNED FOR A MINIMUM H-20 LOADING. ANY COMPONENT THAT WILL BE SUBJECT TO VEHICLE OR OTHER HEAVY EQUIPMENT TRAFFIC SHALL BE INSTALLED WITH H-20 LOADING CAPACITY. 12. UNDERGROUND UTILITIES SHOWN ARE APPROXIMATE. CONTRACTOR SHALL VERIFY ALL UNDERGROUND UTILITIES PRIOR TO ANY EXCAVATION, 13. NO KNOWN WELLS EXIST WITHIN 200' OF THE PROPOSED LEACHING AREA EXCEPT THOSE THAT ARE SHOWN. 14. CONTRACTOR SHALL REFER TO THE ORDER OF CONDITIONS ISSUED BY THE YARMOUTH CONSERVATION COMMISSION DESIGN CALCULATIONS 1. ESTIMATED HYDRAULIC LOADING: 10 - BEDROOMS AT 110 GPD PER BEDROOM = 1100 GPD GARBAGE GRINDER IS NOT ALLOWED WITH THIS DESIGN 2. SEPTIC 'TANK SIZE: AVERAGE DAILY FLOW .= 1100 GPD X 2 DAYS = 2200 GALLONS 3500 TWO COMPARTMENT SEPTIC TANK PROVIDED 1100 GPD x 2 DAYS = 2200 GALLON FIRST COMPARTMENT 1100 GPD x i DAY = 1100 GALLON SECOND COMPARTMENT (MIN) 3. DESIGN PERCOLATION RATE = < 2 MINUTES PER INCH SOIL TEXTURE SANDS, CLASS 1 310 CMF 15.242 EFFLUENT LOADING RATE = 0.74 GPD/SF 4. LEACHING AREA TOTAL SQUARE FOOTAGE REQUIRED BY TITLE 5 - 1100 GPD + 0.74 GPD/SF 1487 SF REQUIRED. LEACHING AREA = 49' x 31' LEACHING BED, BOTTOM AREA ONLY = 1519 SF PROVIDED. 5. ACTUAL HYDRAULIC LOADING = 1100 GPD (SEE 1.) DESIGNED LEACHING AREA EXCEEDS LEACHING AREA REQUIRED UNDER BOTH TITLE 5 AND THE TOWN OF YARMOUTH BOARD OF HEALTH REGULATIONS FOR TEN BEDROOMS. 6. RESERVE AREA = 256 LINEAR FEET OF PRESSURE DOSED 2x2 LEACHING TRENCHES - 247' REQUIRED. PROPOSED SEWAGE DISPOSAL SYSTEM FOR: AN EXISTING 8 BEDROOM DWELLING AND PROPOSED 2 BEDROOM GUEST HOUSE (10 BEDROOMS, TOTAL) AT: 1149 GREAT ISLAND ROAD YARMOUTH, MASSACHUSETTS ASSESSOR'S MAP: 4 PARCEL: 10 APPLICANT: ROBERT & LYNN NICHOLAS TEL. NO.: (508) 775-1543 1405 29TH STREET WASHINGTON, DC 20007 JOB #:0-10552 utNosk ^st, DATE: JUNE 20, 2008 DESIGNED BY: REV: JULY 22, 2008 LAS DRAWN BY: REV: SEPTEMBER 11, 2008 RJF / LAS :CHELAS D/BRJF y t�uw SCHOFIEL57 BROTHERS OF CAPE COD �h 'Ih/TACIAW a1'f ENGINEERING - SURVEYING - PERMITTING 'wvywse P.O. BOX 101, 161 CRANBERRY HIGHWAY ORLEANS, MA (508L255-2098 FILE COPi" DEEP TEST HOLE OBSERVATION LOG #2 DATE: 2/20/08 JOB: 0-10552 PERFORMED BY: LAURA SCHOFIELD WITNESSED BY: AMY VON HONE, YARMOUM BOH ELEVATION DEPTH FROM SOIL SOIL TEXTURE SOIL COLOR SOIL (FT) SURFACE (IN) HORIZON (USDA) (MUNSELL) MOTTLING OTHER 12.6-11.9 0-8 A SANDY LOAM 10 YR 3/3 NO MASSIVE, V FRIABLE 11.9-9.6 B-36 B SANDY LOAM 10 YR 5/8 NO MASSIVE, FRIABLE 9.6-8.1 36-54 CI SAND 10 YR 6/6 NO SGR, LOOSE 8.1-4.8 54-93 C2 SANDY LOAM 10 YR 5/4 NO SISK, EX. FIRM 4.8-0.6 93-U4 C3 SAND 10 YR 6/4 NO SGP, LOOSE COARSE PARENT GEOLOGICAL MATERIAL GLACIAL OUTWASH STANDING WATER IN HOLE: 128' (ELEV - 1.9) WEEPING FROM FACE: DEPTH TO BEDROCK.: N/A ESTIMATED SEASONAL HIGH GROUNDWATER AT EL . 3.5 (INCLUDES A 1.6' CORRECTION FACTOR) PERCOLATION TEST: PERC. RATE < 2 WI (ASSUMED) ` c ' a ---- 7- - 49.0' PROFILE VIE1Y 2" CLEAN SAND .. ,.. ,.. ,.:; 4" CLEAN SAND 45' 12" MIN. 8" COMPACTED GRAVEL BASE CLEAN SAND BOTH SIDES NOTES: THE COMPACTED GRAVEL BASE SHALL CONFORM TO MASS. HIGHWAY DEPT. EC. M1.03.1 FOR DENSE GRADE BASE GRAVEL, WITH NO STONES LARGER THAN INCHES AND SHALL BE COMPACTED IN TWO FOUR INCH LIFTS. REINFORCED GRASS ACCESS ROAD TEL. RISER UGu `••� Oma`' -- - -=z .;y`� '�� \�`� i.. 23' I•• oti4� _ �' li •�.. _ _ I /\ �� �, P, a o FLOOD ZONE O _ - - -81.27'-W _ �W _ i ; -E� ���� , .' o /�"Al2" (EL:12) //3wN/ 1 �/ Y 100' FROM THE EDGE 1 O' FROM BORDERING '•�� / \ •\•/ i OF SALT MARSH PROPOSED - PROPOSED �VEGETATED WETLAND �- WELL / WATER LIN \ DRIVEt AY 3 /- --E DRI OUSE LIMIT OF /PROPOSED � I' OVERDIGEROSION/ .,�•' PROPOSED\SQUARE CONTROL U _ ---�� �- EROSION STONE 1 I, CONTROL % •� ��' \ LIMIT OF FLOOD / / / �tibe\: \ ` , z PROPOSED - _ F _ / ZONE "V15" _ A EROSION �� / C• A- �_ i CONTROL FLOOD ZONE BENCiMARK: TOP OF /PROPOSED "Al2" ._ "Al2" (EL: 10) > 12" GALVANIZED SPIKE. _ DRIVEWAY i_- _ \�, // _ I ` EL: =10.91 NGVD 1929 EDGE OF - _WF 1 "�! VEGETATED WETLAND' ls- / -- - ---WF-2 _-WF 3 NATURAL GRADE -1 II I1 WATER SURFACE EDGE Or \ WF 4 j ELEVATION = 5.7' POND \ ----- / �` ~ ^_ 'I / (2/04/08) �.\\'•\ -. '\t/,_, _ F1NiSHED GRADE POND _ 4 )x- �'i1F1�'ilGi'-11F1+91F1•+>11F1 PROVIDE •.� 63'29' ;�\. -- - - L. -! - - - -_ _ / % / / / 1 ERO 4" PERFORATED PVC RE -BAR FOR ''� �,� I f l J )�- THE WITH SCREW TYPE DETECTION .. J,. -�" i I _.'. CON CAP. RAISE TO WITHIN (TOP OF BAR ' I /"- �, i I T 3" OF FINISHED FLUSH WITH '\ / %/ ~� BY T GRADE 0 o PVC CAP) \ J / •' / -'t ` U Q r 2. P EXTEND PORT TO o o ,.__ LEACH FIELD 1 / 3. O Y A. U ` . BOTTOM OF LEACH o o� •\ { " I it ALL FIELD �oo \ 4. A OR TYPICAL INSPECTION PORT DETAIL \ I i " , =LL' ALL NO SCALE '�; z� I1 / 6. u VEG 4" L,,.,, (NO SCALE) H- z w m w Q D w w 0 1.5" BIT. CONC. SURFACE COURSE 2" BIT. CONC. BASE COURSE 12" GRAVEL BASE PREPARED SUBGRADE COMPACTED BACKFILL COMPACTED SELECT BACKFILL FORCE MAIN COMPACTED APPROVED GRAVEL BACKFILL 18" MIN. TYPICAL FORCE MAIN BEDDING DETAIL STAKED HAYBALE EROSION CONTROL BARRIER DETAIL HAY OR 5rnaw i STAKED HAYBALES (NO SCALE) PSp pRBp�.F. TAMPED / -\� FLOW SOIL --`\ 2" x 2" STAKES DRIVEN 12" MIN. INTO THE GROUND TAMPED J SION CONTROL NOTES SOIL FOLLOWING ARE GENERAL EROSION CONTROL SPECIFICATIONS TO BE EMPLOYED WHEN CONS WORK IS TO TAKE PLACE ON SITE HE CONTRACTOR SHALL OBTAIN AND BECOME FAMILIAR WITH THE ORDER OF CONDITIONS ISSUED HE TOWN OF YARMOUTH CONSERVATION COMMISSION REGARDING WORK IN AND AROUND THE VS PROPERTY. Pi TO ANY DISTURBANCE OR ALTERATIONS OF ANY AREA ON THE SITE, A STAKED HAYBALE MENT BARRIER OR SILT FENCE SHALL BE INSTALLED AS SHOWN HEREON. NCE INSTALLED, THE STAKED HAYBALE SEDIMENT BARRIER SHALL BE MAINTAINED IN PLACE UNTIL AREAS UPGRADIENT FROM THE BARRIER HAVE BEEN STABILIZED AS SPECIFIED HEREIN. LL DISTURBED AREAS NOT OTHERWISE DEVELOPED OR WHERE SPECIAL STABILIZATION MEASURES LANDSCAPE PLANTINGS ARE NOT PROPOSED SHALL BE LOAMED AND SEEDED OR SODDED. APPLY R INCHES OF LOAM TOPSOIL (MIN.), UNLESS OTHERWISE SPECIFIED. LL AREAS OUTSIDE THE LIMIT OF WORK ARE TO BE LEFT UNDISTURBED. DURING THE SITE WORK, PERSONS AND EQUIPMENT SHALL STAY OUT OF THESE AREAS AND PRESERVE THE EXISTING ETATION. PON FINAL GRADING, DISTURBED AREAS SHALL BE SEEDED WITH AN APPROPRIATE SEED MIX. FILE 4" SCH-40 PERFORATED PVC DISTRIBUTION LINES - PERFORATIONS TO BE EVENLY SPACED ALONG NINE ROWS RUNNING THE LENGTH OF THE PIPE ON EACH SIDE BETWEEN THE INVERT AND THE CENTERLINE WHICH SEPARATES THE UPPER AND LOWER HALVES OF THE PIPE. PERFORATIONS SHALL HAVE A DIA. OF 3/8" TO 5/8" FG=VARIES FG= 12x0 2" LAYER OF 1/8" - 3/8" DOUBLE WASHED STONE I END OF '_ , LEACH IN I L E INV=9.50 r •-� ^` ',, TO BE CAPPED 1.5' 3.5' 3S' 3.5' 3/4" - 1.5" DOUBLE WASHED STONE BOTTOM OF BED ELEV=8.5 A VARIANCE IS REQUESTED FROM THE YARMOUTH BOARD OF HEALTH REQUIREMENTS AS FOLLOWS: (3.7) FOUNDATION OF DWELLINGS SHALL NOT BE LESS THAN 2 FEET ABOVE THE HIGHEST POINT OF THE ROAD AFFRONTING EACH LOT. THE HIGH POINT IN THE ROAD IS EL 17.2, APPROX. 560 FEET WEST OF THE PROPCSED BUILDING. THE PROPOSED TOP OF FOUNDATION ELEVATION VARIES BETWEEN 12.1 TO 11.1. FINISHED GRADING IS TO SLOPE AWAY FROM BUILDINGS FOR A DISTANCE OF TEN FEET, MINIMUM. 1. GENERAL FURNISH AND INSTALL ONE COMPLETE PUMPING SYSTEM CONSISTING OF ONE SUBMERSIBLE SEWAGE PUMP AND MOTOR, DISCHARGE PIPING AND VALVES, MERCURY FLOAT SWITCHES LEVEL CONTROLS, HIGH WATER ALARM, SIMPLEX CONTROL PANEL AND A PRECAST CONCRETE TANK. ALL EQUIPMENT SHALL BE INSTALLED IN ACCORDANCE WITH THE MANUFACTURER'S SPECIFICATIONS AND. WARRANTED FOR A PERIOD OF AT LEAST ONE YEAR. UPON COMPLETION OF THE INSTALLATION, THE CONTRACTOR SHALL PROVIDE A SUFFICIENT QUANTITY OF CLEAN WATER TO CONDUCT PUMP OPERATION TESTS. 2. DOSING CHAMBER (PUMP STATION) - THE PUMP CHAMBER SHALL BE A PRECAST CONCRETE STRUCTURE AS SHOWN ON THE DETAIL. USE A 2000 GALLON SEPTIC TANK. USE ST -,2000-H-20 _•(H, 20 MIN. LOADING) AS MANUFACTURED BY SHOREY OR AN APR.ROVED EQUAL. 3. PUMP AND MOTOR PUMP AND MOTOR SHALL BE HEAVY DUTY SEWAGE -TYPE EJECTOR WITH A 2 -INCH DISCHARGE. PUKP AND MOTOR SHALL BE FULL" - SUBMERSIBLE AND SHALL OPERATE AT 1750 RPM WITH A 115V, 60 CYCLE, SINGLE PHASE AC POWER SOURCE. THE ELECTRICAL CONTRACTOR SHALL VERIFY THAT PROPER VOLTAGE IS AVAILABLE AT THE CONTROL. PANEL. USE A MYERS WHR5 OR AN APPROVED EQUIVALE Yarmouth Health THE PUMP SHALL BE RATED AS FOLLOWS: A) 0.50 HP A n 7•f R 8 71 GALLONS PER MINUTE Lim C 17.0 FEET TOTAL DYNAMIC HEAD 4. LEVEL CONTROLS me SEALED FLOAT -TYPE MERCURY SWITCHES SHALL S r u v CONTROL THE SUMP LEVEL AND ALARM SIGNAL. TWO FLOAT SWITCHES SHALL BE USED TO CONTROL THE SUMP LEVEL: ONE FOR FOR PUMP "OFF" AND ONE FOR PUMP "ON". A THIRD SWITCH SHALL BE PROVIDED WITH A POWER SOURCE SEPERATE FROM THE PUMP POWER AND SHALL BE FOR THE ALARM UNIT. A NEMA -4 JUNCTION BOX FOR THE FLOAT SWITCHES SHALL BE INSTALLED ABOVE THE HIGH WATER LEVEL. THE FLOAT LEVEL CONTROLS SHALL BE SET TO OPERATE AT THE ELEVATIONS INDICATED ON THE PLINS. 5. CONTROL PANEL THE SIMPLEX CONTROL PANEL SHALL BE EQUIPPED WITH A RUN LIGHT FOR THE PUMP, PROPERLY SIZED CIRCUIT BREAKERS, A TRANSFORMER TO GIVE PROPER VOLTAGE TO THE CONTROL CIRCUITS AND A THREE-WAY PUMP CONTROL SWITCH. THE SWITCH POSITIONS ARE AS FOLLOWS: 1) PUMP OFF, 2) AUTOMATIC PUMP ON, AND 3) MANUAL PUMP ON. THE SIMPLEX CONTROL PANEL SHALL BE FOR A 115 V, 60 CYCLE, SINGLE PHASE AC POWER SUPPLY AND HOUSED IN A NEMA -1 ENCLOSURE. THE PANEL SHALL BE INSTALLED IN A SUITABLE LOCATION INSIDE THE BUILDING APPROVED BY THE HOMEOWNER. 6. ALARM A HIGH WATER ALARM SHALL BE SUPPLIED WITH BOTH AN AUDIBLE AND VISUAL ALARM WITH A SEPARATE POWER SUPPLY FROM THE PUMP. THE ALARM SHALL BE MOUNTED IN A NEMA -4 ENCLOSURE SEPARATE FROM THE MAIN PUMP CONTROL PANEL. AN ALAPM SILENCER BUTTON SHALL BE PROVIDED TO SILENCE THE AUDIBLE ALARM WHILE THE VISUAL ALARM REMAINS LIT UNTIL MANUALLY RESET. THE PAWL SHALL BE LOCATED ON THE OUTSIDE OF THE BUILDING AT A LOCATION APPROVED BY THE HOMEOWNER 7. PIPING THE PUMP STATION DISCHARGE PIPING, FITTINGS AND SEWAGE FORCE MAIN SHALL BE 2 -INCH 200 PSI SDR -21 PVC. WITHIN THE PUMP CHAMBER, THE DISCHARGE PIPING SHALL INCLUDE THE FOLLOWING: 1) IN THE VERTICAL POSITION: A 2 -INCH BALL - TYPE, CHECK VALVE; AND 2) IN THE HORIZONTAL POSITION: A 2 -INCH BALL VALVE, AND A 2" QUICK DISCONNECT UNION. PIPING AND VALVES SHALL BE ARRANGED SO THAT THEY ARE EASILY ACCESSIBLE FROM THE PU14P CHAMBER MANHOLE COVER. FORCE MAIN SHALL BE LAID IN A "CLASS B" TRENCH BEDDING . ALL PIPING OUTSIDE THE PUMP CHAMBER WHICH IS LESS THAN FOUR (4) FEET BELOW FINAL FINISHED GRADE SHALL BE SURROUNDED WITH A MINIMUM OF TWO (2) INCHES OF RIGID STYROFOAM INSULATION. PROVIDE CONCRETE THRUST BLOCMNG AT ALL -FORCE MAIN BENDS WITH MINIMUM SOIL BEARING SURFACE AREA OF ONE SQUARE FOOT. 8. DOSING REQUIREMENTS PURSUANT TO 310 CMR 15.254 DOSING: THE SYSTEM HAS BEEN DESIGNED TO PROVIDE 4 DOSES PER DAY EQUAL TO 278 GALLONS PER DOSE. THIS VOLUME IS BASED ON A DESIGN FLOW OF 1100 GALLONS PER DAY DIVIDED BY 4, AND A FORCE MAIN FLOW -BACK VOLUME OF 12 GALLONS PER DOSE. ADDITIONAL STORAGE PROVIDED IN THE PUMP CHAMBER, ABOVE THE HIGH WATER LEVEL IS APPP.OPAATELY 1372 GALLONS. IN THE EVENT OF A POWER FAILURE, THIS IS SUFFICIENT CAPACITY TO PROVIDE FOR APPROXIMATELY 28 HOURS Oi' STORAGE, BASED ON ESTIMATED PEAK DAILY FLOW. 9. CONCRETE SEALANT EXTERIOR SURFACES OF THE PUMP CHAMBER, AND SEPTIC TANK SHALL BE SEALED WITH KAPPER'S BITUMASTIC TAR EPDXY OR APPROVED EQUAL. THICKNESS OF THE EPDXY SHALL BE 6 MIL (TWO COATS). LOCUS MAP SCALE: 1 in. = 2000 ft. FG=12x3 BREAKOUT FG= 12xO ELEV= 10.25 A r J. 3.5' 1 3.5' 1 3.5 31' CROSS-SECTION VIEW YARMOUTH BOARD OF HEALTH DATE: _ GENERAL NOTES I. ELEVATIONS REFER TO NGVD 1929, SEE BENCHMARK ON PLAN 2, ALL CONSTRUCTION AND MATERIALS TO CONFORM TO TITLE 5 OF THE MASSACHUSETTS STATE ENVIRONMENTAL CODE AND THE BOARD OF HEALTH REQUIREMENTS FOR THE TOWN OF YARMOUTH, 3. ANY CHANGES TO THIS PLAN MUST BE APPROVED BY THE BOARD OF HEALTH AND SCHOFIELD BROTHERS OF CAPE COD. 4_ FOR PROPER PERFORMANCE, THE SEPTIC TANK SHOULD BE INSPECTED AT LEAST ONCE PER YEAR. THE TANK SHOULD BE PUMPED WHEN THE TOTAL DEPTH OF SCUM AND SOLIDS EXCEEDS 1/3 OF ITS LIQUID DEPTH. 5. SCHOFIELD BROTHERS OF CAPE COD DOES NOT ASSUME RESPONSIBILITY FOR MATERIALS ENCOUNTERED DURING EXCAVATION. 6. ALL UNSUITABLE OR DELETERIOUS MATERIAL ENCOUNTERED MUST BE EXCAVATED AND REMOVED TO A HORIZONTAL DISTANCE OF 5' FROM ALL SIDES OF THE SOIL ABSORPTION SYSTEM. BACKFILL MUST BE CLEAN SAND MATERIAL MEETING TITLE 5 SPECIFICATIONS TO AN ELEVATION OF 10.25. CONTACT SCHOFIELD BROTHERS IF ANY DOUBT OR QUESTIONS Departmen ARISE REGARDING SOIL QUALITY. 1�,.,INSTALLATION CONTRACTOR SHALL CONTACT SCHOFIELD BROTHERS FOR �/D EXCAVATION INSPECTION AND PRIOR TO BACKFILLING FOR SYSTEM CERTIFICATION. (f EXISTING CESSPOOL IS TO BE PUMPED, ABANDONED AND COLLAPSED OR FILLED WITH CLEAN SAND. Date EXISTING & PROPOSED BUILDING SEWER INVERTS SHALL BE VERIFIED FIELD PRIOR TO COMPONENT INSTALLATION. CONFIRM PLUMBING CHANGES WITH PLUMBER PRIOR TO INSTALLATION OF ANY COMPONENTS. CONTACT SCHOFIELD BROTHERS IF SIGNIFICANT DISCREPANCIES EXIST. 10. SITE RESTORATION REQUIRES ALL STRIPPED TOPSOIL AND SUBSOIL TO BE STOCKPILED AND REUSED AT OWNERS OPTION. RE -SPREAD OVER DISTURBED AREAS TO PROMOTE OPTIMAL GROWTH. 11. ALL SEPTIC SYSTEM COMPONENTS ARE DESIGNED FOR A MINIMUM H-20 LOADING. ANY COMPONENT THAT WILL BE SUBJECT TO VEHICLE OR OTHER HEAVY EQUIPMENT TRAFFIC SHALL BE INSTALLED WITH H-20 LOADING CAPACITY. 12. UNDERGROUND UTILITIES SHOWN ARE APPROXIMATE. CONTRACTOR SHALL VERIFY ALL UNDERGROUND UTILITIES PRIOR TO ANY EXCAVATION, 13. NO KNOWN WELLS EXIST WITHIN 200' OF THE PROPOSED LEACHING AREA EXCEPT THOSE THAT ARE SHOWN. 14. CONTRACTOR SHALL REFER TO THE ORDER OF CONDITIONS ISSUED BY THE YARMOUTH CONSERVATION COMMISSION DESIGN CALCULATIONS 1. ESTIMATED HYDRAULIC LOADING: 10 - BEDROOMS AT 110 GPD PER BEDROOM = 1100 GPD GARBAGE GRINDER IS NOT ALLOWED WITH THIS DESIGN 2. SEPTIC 'TANK SIZE: AVERAGE DAILY FLOW .= 1100 GPD X 2 DAYS = 2200 GALLONS 3500 TWO COMPARTMENT SEPTIC TANK PROVIDED 1100 GPD x 2 DAYS = 2200 GALLON FIRST COMPARTMENT 1100 GPD x i DAY = 1100 GALLON SECOND COMPARTMENT (MIN) 3. DESIGN PERCOLATION RATE = < 2 MINUTES PER INCH SOIL TEXTURE SANDS, CLASS 1 310 CMF 15.242 EFFLUENT LOADING RATE = 0.74 GPD/SF 4. LEACHING AREA TOTAL SQUARE FOOTAGE REQUIRED BY TITLE 5 - 1100 GPD + 0.74 GPD/SF 1487 SF REQUIRED. LEACHING AREA = 49' x 31' LEACHING BED, BOTTOM AREA ONLY = 1519 SF PROVIDED. 5. ACTUAL HYDRAULIC LOADING = 1100 GPD (SEE 1.) DESIGNED LEACHING AREA EXCEEDS LEACHING AREA REQUIRED UNDER BOTH TITLE 5 AND THE TOWN OF YARMOUTH BOARD OF HEALTH REGULATIONS FOR TEN BEDROOMS. 6. RESERVE AREA = 256 LINEAR FEET OF PRESSURE DOSED 2x2 LEACHING TRENCHES - 247' REQUIRED. PROPOSED SEWAGE DISPOSAL SYSTEM FOR: AN EXISTING 8 BEDROOM DWELLING AND PROPOSED 2 BEDROOM GUEST HOUSE (10 BEDROOMS, TOTAL) AT: 1149 GREAT ISLAND ROAD YARMOUTH, MASSACHUSETTS ASSESSOR'S MAP: 4 PARCEL: 10 APPLICANT: ROBERT & LYNN NICHOLAS TEL. NO.: (508) 775-1543 1405 29TH STREET WASHINGTON, DC 20007 JOB #:0-10552 utNosk ^st, DATE: JUNE 20, 2008 DESIGNED BY: REV: JULY 22, 2008 LAS DRAWN BY: REV: SEPTEMBER 11, 2008 RJF / LAS :CHELAS D/BRJF y t�uw SCHOFIEL57 BROTHERS OF CAPE COD �h 'Ih/TACIAW a1'f ENGINEERING - SURVEYING - PERMITTING 'wvywse P.O. BOX 101, 161 CRANBERRY HIGHWAY ORLEANS, MA (508L255-2098 FILE COPi"