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93.4.18 - Septic System DesignB. TCH LOCUS INFORMATION �/ /@DMHBBAASSININ DRAIN E n \ CURRENT OWNER: JAMES A. ROBERTSON MIN LOT AREA: 40,000 S.F. EAS ENT \ D K OCKOUTTS LIVING TRUST EXISTING LOT AREA: 43,702± S.F. O REMOVABLE TYP, COVER . TITLE REFERENCE: DEED 21465-9 ' FOUND 4" D 5 FEMA FLOOD 85 / \ •. r - �•' PLAN REFERENCE: PLAN 620-27 ZONE DISTRICT. "C" DATED 6/17/86 ti m r PANEL # 250015 0003 CGAL p ` LEACHING CHAMBER 11" ".I I ASSESSORS MAP: 93 PROP. BLD. COVERAGE: 3,200± S.F. (7 %) OO 24" I I PARCEL: 4.18 I13' rl RESERVE -AREA-,- -� ZONING DISTRICT: R-40 m \ b" 42:0'x12.83' \ 12' DIA. COVER SETBACKS: SIDE 20' �' 3" Lam. BOTTOM ON LEVEL ' • REAR 20 / / HIGHPOINT IN ROAD BENCHMARK TAG BOLT ON HYDRANT. ELEV=84.70 ASS CONCRETE BOUND WITH DRILLHOLE FOUND AND HELD (CBDH) S 1 ` TABLE BASE L 6" MINIMUM I c` /Z / /2000 r i �� ` 3/4" TO 1-1/2" I� 24" NITROGEN SENSITIVE ' ! / X2586 TP PLAN VIEW SECTION VIEW CRUSHED STONE ZONE: ZONE II / / X39 i •'• •'•'' NOTES: OVERLAY DISTRICTS: O.K.H. 1. CONTRACTOR SHALL INSTALL A SCH. 40 PVC INLET TEE INSIDE THE DISTRIBUTION BOX. !(/ PROPOSED :::: •' :.:':' \ \ ` CBDH 2. DISTRIBUTION BOX SHALL BE CAPABLE OF WITHSTANDING H-20 LOADING. J ED / `:' 'I : •' \ \ o 3. ALL PIPE CONNECTIONS AND CONCRETE CONSTRUCTION SHALL BE WATERTIGHT. I I 92 ::' \ �'EMH E 4. FIRST TWO FEET OF PIPES OUT OF DISTRIBUTION BOX SHALL BE LAID LEVEL 5. FILL ALL UNUSED KNOCKOUTS WITH MORTAR. �/ /( /� 6. CONCRETE COVER SHALL BE SET WITHIN 6 INCHES OF FINISHED GRADE. LOT 1 T I ` /� _ 79• ® ®O ® / x f9.4 / ` \ \ CPO �\\ /\ V�� VARIANCES REQUESTED 1� PRQPQSED / ��-� �� vv` ,\ r OP l r ^ Q LOT 1 ri / UY � b/ OX CBDH TITLE 5: NONE TOWN OF YARMOUTH: / \ \ �� / �1.500 GAALLON Y TO ALLOW THE TOP OF FOUNDATION TO BE 1' BELOW THE HIGH POINT IN ROAD IN LIEU OF 2' ABOVE. \ X I �� 500 G / \ � � 81.8 m SEPTIC TAN � �\ � \ \ \ r ^ 7 I ` j w CBDH m 31 V , 1,500 GALLON SEPTIC TANK (H -10l \ .... �/Q \ v� NOT TO SCALE CO \ \ ` LOT ! V x P72.8 I m 1 E❑ �. \ 81.4 NOTES MIN. 20" DIA. COVER, TYP. 9s p c9 O`er -4 F. , 702t S. 1. SEPTIC TANK SHALL BE STEEL REINFORCED CONCRETE RAISE (2) TO WITHIN 6" OF FINISHED 2. SEPTIC TANK SHALL BE CAPABLE OF WITHSTANDING H-20 GRADE USING SEWER BRICK AND \ \ I I I W LOADING. MORTAR AS NECESSARY I W 3. ALL PIPE CONNECTIONS AND CONCRETE CONSTRUCTION `" ' PROP. PROPOSED \ •� SHALL BE WATERTIGHT. 6" MAX \ \ EL=835 4DWmwONOGM 4. TEES SHALL BE SCH. 40 PVC AND SHALL BE LOCATED ` 'i \ 1 WITHIN 12" OF TANK WALL AND ACCESSIBLE FROM TANK83.0- TOF ` � TOF83.00 COVER. \. ` ` \ - ` 5. FILL ALL UNUSED KNOCKOUTS WITH HYDRAULIC CEMENT. G F.F.E.=84.00 CATCH 10'-6" -T- � I � \ x 81:8 \ .r � / OASVI 10" - " r \ 85 \ DO x 82 N • � a_ r `` 7 \ LIQUID 5 -8" \ g \ Ci \ - - - 4'-6- ?e ILOCATE DEPTH , LOT 16� . \ \ O 8� x 81 9, PROPOSED \ INLET TEE OUTLET TEE 5' H \I -8" UNDER COVER lO O - W/GAS BAFFLE CBDGARAGE 3 r" \ `� SLAB=82.244 j 6" MINIMUM 1 PLAN VIEW 3/4" To 1-1/2" CROSS-SECTION VIEW CRUSHED STONE U \ O \ 81 / PROPOSED I'l, POINT\ �BDRMNE}A,AYS ' SYSTEM PROFILE I i NOT TO SCALE 4" SCH. 40 PVC ,PROPOSED STONE WALL 44, W � B L=14 FT. INSTALL -WHEN REQUIRED EL=A S=0.015 I ?3?3A 1 x 81.4\ Gyp TOP FOUNDATION FIRST PIPE LENGTH LOT 17ul TO BE SET LEVEL EL=82.0f 4" SCH. 40 PVC FOR MIN. 2' L=14 FT, FINISH GRADE co S=0.024" SCH. 40 PVC E-= 79.7 - 79.4 r SCHEDULE OF ELEVATIONS CRAWL LEACHING CHAMBER \ \1 o00000000o t SPACE 1=6 G o 0 0 0 0 0 0 0 0 o TOP OF OF FOUNDATION $3.00 A ` I=D 0000000000 1 i=C 1=E I=F H 4" INVERT AT BUILDING 77.13 B 6 OUTLET I 4" INVERT AT SEPTIC TANK (IN) 76.85 C D -BOX H-20 8.9' SEPARATION /J 1,500 GAL 4" INVERT AT SEPTIC TANK (OUT) 76.60 D J 1 / SEPTIC TANK 1 / EST. HIGH GROUNDWATER 4" INVERT AT D -BOX (IN) 76.38 E NO OBSERVED GROUNDWATER 4" INVERT AT D -BOX (OUT) 76.21 F / MAGNETIC REFLECTIVE TAPE SHALL BE PROVIDED IN THE TRENCH OVER ALL PVC PIPING. ELEVATIONS AT LEACHING FACILITY: 4" INV. AT LEACHING CHAMBERS 76.00 G (BRKOUT 76.8) BOTTOM OF LEACHING CHAMBERS 74.00 H ESTIMATED SEASONAL HIGH GROUNDWATER 65.10 J SOIL TEST PIT DATA SEPT. 4, 2013 NOT TO SCALE X En w1� 0 Bio N )> cn Co1 1 TEST PIT TP -1 TEST PIT TP -2 GRD. EL 75.1 GRD. EL 81.7 SHGW EL 65.1 SHGW EL - EL 74.4 EL. 71.5 EL 65.1 i A / / LOAMY SAND / i i 10YR 3/1 i B i i LOAMY SAND / i 10YR 5/6 i Cl MEDIUM SAND 10YR 6/4 20% BOULDERS NO G.WATER 8" EL 81.2 44" EL 78.7 120" EL 68.7 i A / / LOAMY SAND / / 10YR 3/1 / ' B i i LOAMY SAND / j IOYR 5/6 i Cl IM MEDIUM SAND 10YR 6/4 10% BOULDERS NO G.WATER 6" EL 79.5 36" EL 77.1 68" 156" EL 69.6 TEST PIT TP -3 GRD. EL 79.6 SHGW EL. LOAMY SAND i 10YR 3/1 � B i % LOAMY SAND / j 1018 5/6 i Cl MEDIUM SAND 10YR 6/4 10% BOULDERS NO G.WATER 6' EL 78.9 30" EL 76.9 120" EL 69.4 TEST PIT TP -4 GRD. EL 79.4 SHGW EL i i A / LOAMY SAND 10YR 3/1 i � e i LOAMY SAND IOYR 5/6 i Cl MEDIUM SAND 10YR 6/4 10% BOULDERS NO G.WATER ONSITE SOIL EVALUATION DATE: SEPTEMBER 4, 2013 TEST BY: BSC GROUP, INC. WITNESSED BY: AMY VON HONE LICENSED SOIL EVALUATOR: KIERAN J. HEALY, PLS SE. 6" PERCOLATION RATE: < 2 MINS./INCH SOIL CLASS: CLASS 1 L.T.A.R.: 0.74 GPD/S.F. 30" LEGEND UNSUITABLE - ESTIMATED MATERIALS � SEASONAL HIGH (TO BE REMOVED) GROUNDWATER PERCOLATION v OBSERVED TEST RANGE GROUNDWATER 120" 4f I 00 11p�� J 0 CATCH I --.DRAINAGE (BASIN 16 EASEMENT s " LD 0 O I 1 _0 N \ . oo m �A / � n / EMH / CBDH. / DRAINAGE EASEMENT D f / CAT H BASIN \ CATCHY// \ BASIN�9 CBDH YARfi�^,GUTH FNGINEEP+i;1G DEPART4� IJ46 ROUTE 28 SOUTH YARMOUTH, MA 0I GENERAL NOTES 1. THIS PLAN IN ONLY INTENDED FOR THE DESIGN AND CONSTRUCTION OF THE DWELLING do SEWAGE DISPOSAL FACILITIES. 2. ALL CONSTRUCTION METHODS AND MATERIALS SHALL CONFORM TO 310 CMR 15.000 AND BARNSTABLE BOARD OF HEALTH REGULATIONS. 3. THERE ARE NO KNOWN OR PROPOSED PRIVATE WELLS LOCATED WITHIN 150 FEET OF THE PROPOSED LEACHING FACILITY. 4. IF AN OVERDIG IS SPECIFIED, REMOVE ALL TOPSOIL, SUBSOIL AND OTHER UNSUITABLE MATERIALS. 5. IF AN OVERDIG IS SPECIFIED, REPLACE ALL EXCAVATED MATERIALS WITHIN THE LIMIT OF EXCAVATION PATH CLEAN GRANULAR SAND, FREE FROM ORGANIC MATERIAL AND DELETRIOUS SUBSTANCES. MIXTURES AND LAYERS OF DIFFERENT CLASSES OF SOIL SHALL NOT BE USED. FILL SHALL NOT CONTAIN ANY MATERIAL LARGER THAN 2 INCHES. A SIEVE ANALYSIS USING A #'4 SIEVE SHALL BE PERFORMED ON A REPRESENTATIVE SAMPLE OF FILL. UP TO 45% BY W,GHT MAY BE RETAINED ON THE #4 SIEVE. SUCH ANALYSES MUST DEMONSTRATE THAT THE MATERIAL MEETS EACH OF THE FOLLOWING SPECIFICATIONS: 100% MUST PASS #4 SIEVE 10% MUST PASS #50 SIEVE 0-20% MUST PASS #100 SIEVE 0-5% MUST PASS #200 SIEVE 6. EXISTNG UTILITIES WHERE SHOWN ON THE PLANS ARE APPROXIMATE. THE ENGINEER DOES NOT GUARANTEE THEIR ACCURACY OR THAT ALL SUBSURFACE STRUCTURES ARE SHOWN. CONTRACTOR SHALL VERIFY THE SIZE, LOCATION AND ELEVATION OF INVERTS OF UTILITIES AND STRUCTURES, WITHIN THE LIMIT OF WORK, PRIOR TO THE START OF CONSTRUCTION. IF ANY DISCREPANCIES ARE DISCOVERED OR FIELD CHANGES REQUIRED, THE CONTRACTOR SHALL NOTIFY THE ENGINEER IMMEDIATELY. 7. THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROPERLY COORDINATING THE PROPOSED CONSTRUCTION ACTIVITIES WITH DIG -SAFE AND THE APPLICABLE UTILITY COMPANIES, AND SHALL COMPLETE THE PROPOSED WORK WITHOUT ANY INTERRUPTIONS IN SERVCE. 8. CONTRACTOR IS REQUIRED TO NOTIFY DIG -SAFE, PER MASS. STATUTE CHAPTER 82; SECTION 40 (1-888-344-7233) A MINIMUM OF 72 HOURS PRIOR TO THE START OF CONSTRUCTION. 9. THIS SYSTEM IS NOT DESIGNED FOR THE USE OF A GARBAGE GRINDER. INSTALLATION OR USE OF A GARBAGE GRINDER AT THIS PROPERTY IS NOT ALLOWED PER 310 CMR 15.240(4). DESIGN. CALCULATIONS DESIGN FLOW 4 BEDROOMS ® 110 GPD/BEDROOM = 440 GPD REQUIRED SEPTIC TANK 440 GPD X 200% = 880 GALLONS USE 1,500 `GALLON SEPTIC TANK SIZE OF REQUIRED LEACHING FACILITY DESIGN PERC. RATE: <2 MIN/INCH LONG TERM APPL. RATE: 0.74 GPD/SF 440 GPD = 0.74 GPD/SF = 595 SF SIZE OF LEACHING FACILITY PROVIDED USE (4) 500 GALLON CONCRETE LEACHING CHAMBERS IN TRENCH CONFIGURATION WITH 4' STONE SURROUNDING. BOTTOM AREA: 42' X 12.83' = 538.8 S.F. SIDEWALL AREA: 2 X (2 X (42' + 12.83')) = 219.3 S.F. EFFECTIVE LEACHING AREA = 758 S.F. 758 S.F. X 0.74 GPD/S.F. = 560 GPD (INSTALLED) 560 GPD > 440 GPD (120 GPD RESERVE CAPACITY) Imo. Yarmout% health rn:zrtment a PE ED me Date ,&-e z-10ar 4 ku AKAPPP (W-10) NOT TO SCALE 20" ACCESS COVER SET A MAX. OF 3" BELOW FINISH GRADE 12-36" COVER LOAM AND SEED 5" DIA. KNOCKOUT (TYP.)F f L ISTURBED AREAS 1-1/2" TAPER i'/////I [-] r1111111111z111111111111 CONC. RISER �� �� EL 76.8 2" LAYER OF 1/8- TO �� �� / 1/2" DOUBLE WASHED I 1 = O = STONE ABOVE CROWN .1" al MASE C1 =1 34" CD O O = C1 OF PIPE (SEE NOTE 3) Boz yNm o0 00 000 00 00 EFFECTIVE 3/4" TO 1-1/20 HenIY N DOUBLE WASHED 9 No.�eus p STONE TO CROWN p�T �o ► iin��� OF PIPE �ss'ONa s�na�o 8'-6" 4'-10" FRONT VIEW SIDE VIEW NOTES: 1. ONE ACCESS COVER PER SYSTEM SHALL BE RAISED TO FINISH GRADE. 2. CHAMBERS SHALL BE 500 GALLON LEACHING DRYWELL, MANUFACTURED BY SHOREY OR APPROVED EQUAL 3. GEOTEXTILE FABRIC MAY BE USED IN LIEU OF DOUBLE WASHED STONE �1� 6A 010 r. a3 X En w1� 0 Bio N )> cn Co1 1 D 1 z rrI 1 DESERT SANDS LN. HAMSTEAD LANE 1 LOCUS '1 'SISTERS CIRCLE 6 1 LOCUS MAP: NOT TO SCALE �~;WAf4fq S�OyG O�� BRIAN p YERGATIAN / CIVIL Na. 6 6 OF9FGrS V, Fgs� L ENG qIg/►3 BRIAN G. YERGATIAN DTE PROFESSIONAL ENGINEER SEPTIC SYSTEM DESIGN 94 SISTERS CIRCLE IN YARMOUTH PORT MASSACHUSETTS (BARNSTABLE COUNTY) SITE PLAN SEPTEMBER 9, 2013 REVISIONS - NO. DATE DESC. NOV 01 2G13 r3U'_6ii ,':.I:i P13PJT . PREPARED FOR: MR. SEAN ENRIGHT 70 LONGFELLOW DRIVE YARMOUTH PORT, MA 02675 (508) 776-0845 BSC GROUP 349 Route 28, Unit D W. Yarmouth, Massachusetts 02673 508 778 8919 © 2013 BSC Group, Inc. SCALE: 1 " = 20' 0 10 20 40 v¢T FILE: CIVIL\DRAWINGS\4979000-SP.DWG DWG. NO: 6212-01 SHEET 1 OF 1 JOB. N0: 4-9790.00