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HomeMy WebLinkAbout83-1486 - Parking Lot - DetailsDING 6` HiGH CHAIN LINK FENCE ' ;. ...:, - _ ,.. >EXCAVATOR: ' BORTOLOTTI : CONSTRUCTION FROM O LEN. SiRI1CTLTE SLO^r 5St MA TO EXtS, NO Ge DATE: APRIL 12, 1999 ., -•. :. :. - 12' PIPE ;. ...:, - _ ,.. >EXCAVATOR: ' BORTOLOTTI : CONSTRUCTION FROM O LEN. SiRI1CTLTE B.O.H. AGENT: INV TO : ENGiNEER: '' D. OJALA, DOWN CAPE ENGINEERING CBi 24.20 LOCATION: TH1 LOCATION:HJR LTi ; " WJ1RAP -"E.EV. DEPTH : `.:: ELEV. - DEPTH 65 OB2 23.40 200 0.0 ° -20.2 0.0 AP - LOAMY SAND '19.4 : 0.8 -Tp-- LOAMY SAND AP LT2 19 0 1.0 100 " - B - LOAMY SAND' 2230 17.50 - 8 - LOAMY SAND LT5 CB3->MH2 17C 3.0 .. -.17.2 3.0 C1 - M/C SAND -16.2 - 4.0 Cl - M/CSAND 17.50 LT6 T7 "' W I= GRAVEL - PERC 24 GAL 6.5 MIN CB4-X87 1DO CB5 9.7 10.5 17.50 LT4 .' W SLO 11.0 ' LT4 BOTTOM 44 BOTTOM - -NO GROUNDWATER FB.t 76.9 3.5 z W w�7 A RIM' ., -•. :. :. - 12' PIPE ;. ...:, - _ ,.. PIPE - FROM O LEN. SiRI1CTLTE ELEV.` INV TO : TRENCH STCT. ^:; CBi 24.20 17.50 LTi ; " WJ1RAP LTI 081-7082 65 OB2 23.40 `17.50 LT1 T2 - W AP LT2 C82->WHV 100 " C83 2230 17.50 U4 T5 ' ' WIMAP LT5 CB3->MH2 100 C84 "'.2 20 17.50 LT6 T7 "' W AP - LT7 CB4-X87 1DO CB5 21.50 17.50 LT4 .' W AP LT4 CB5->M3 44 17.50 C86 FB.t 76.9 3.5 Cl - M/C SAND ' CBS 21.50 17.50 ' - LT6 W AP LT6 C86-XB4 ' 67 17.50 C85 C87 21.80 17.50 LT7 W AP 18.00 MH3 The destination of runoff form the portion of this site to be affected by' construction is 17.50' C88 1`.ft 3.5 cm 20.50 1&00 C87 _ &1 24.10 17.50 LT2 T3 ' ` LT3 MHi->MH2. ,, 60 M42 22.70 17.50 LT3 T5 RV BtE/STUMPS 71.4 9.0 .BOTTOM f. . . required. --Tr:eatment of st'o'-rmw-. ater runoff from impervious areas prior to discharge 18.00 MH3 1C 3 7.0:::. Cl - M/C SAND NO GROUNDWATER MM3 22.30 16.20 c 1611-12 06 15.30 18'->FES1 z W w�7 A NO GPOUNDWAT'ER ; - ., -•. :. :. - ;. ...:, - _ ,.. .: :� •�'.- ,. LOCATION: TH4 ..ELEV. DEPTH LQCA.1i0tr': TIiy3 20.4 0.D FILL ELEV. OEPTH LOAM/METAL/WOOD ,_ ,. STORM WATER' MANAGEMENT COMPLIANCE DATA: FB.t 76.9 3.5 Cl - M/C SAND -. o 2' LOAM STANDARD No discharge of stormwater to wetlands The destination of runoff form the portion of this site to be affected by' construction is 1`.ft 3.5 vegetated wetland bordering on drainage ditched and cranberry bog drainage systems, and �. STUMPS/CARS/WRE - - ' ` ', ultimately, Lewis Bay. .. RV BtE/STUMPS 71.4 9.0 .BOTTOM f. . . required. --Tr:eatment of st'o'-rmw-. ater runoff from impervious areas prior to discharge 1C 3 7.0:::. Cl - M/C SAND NO GROUNDWATER .is STANDARD ®2: Post development peak runoff rotes must not exceed pre -development runoff ` rates: '.. BOTTOM NO GPOt1NDwAlER - :. 'Town of Yarmouth Regulations require recharge of 100% of stormwater runoff generated on LOCATiOfJ: L� LOCATION: TFi6 site during a 25yr, storm. Therefor, the peak rate of runoff will remain approximately the^ ; EV' DEPTH ELEV. same or less than ;pre -development conditions from storms with a return frequency of 25 ars or less. The 100 storm will Ike( be accompanied b coastal flooding to the margins ye Yr Y P Y 9alb 0t a ELEV. DEPTH 17.5 0.0 of the proposed parking area. ( ', 0 E ` nLL L�� ENT h ASPHALT �, STANDARD {t3: Loss of annual recharge 1_.6 OJ -- - LOAMY SAND �. ;. 8 - LOAMY SAND - METAL •. The proposed drainage system w11 infitrate all runoff from storm with b return frequency of 14 3 2.0 Ct - M/CSAND 25yr of less. The recharge capacity of the drainage system is therefor. greaterthan required to" ` r8 _ 12.5 &0 meet this standard. C1 - M/C SAND ' STANDARD #4: TSS removal This project will incorporate water quality inlets of each of the infiltration units to be placed 9.3 7.0 BOTTOM 8.5 9.0 under the pavement of the proposed parking ,area. NO GROUNDWATER BOTTOM NO GROUNDWATER Each infiltration unit consisting of'o stone trench 4.8' wide and four foot deep 'is considered - equivalent to on infiltration basin yielding an 80% TSS removal. .Pretreatment in water :.- LOCATiON: TH7 quality inlets is considered to provide 25 % removal of TSS ELEV. DEPTH ..... EFFECTIVE TSS REMOVAL 859. .✓ . `25.6 ' '0:D SANDY LOAM - 25.9 0:7.,.. '- : ;:. - _ -.. " �STANDARD 9 Operation and Maintenance Plan _ ` P -:- 8- SANDY LOAM Maintenance of this drainage system will include annual inspection of each catch basin, and 2+t 25 23.4 3.2 C1 - M/C BANDperiodic removal of accumulated sediments'when the level of accumulation is within one foot LOS GRAVEL of the Outlet trop.. " .. PERO 24GAL fN 7.8 MIN In addition, the overflow basin (FESi) will be annually inspected and sediments removed as ' - required. , Drainage inlets v7l be kept free of leaves and debris which would decrease inlet capacity. The parking lo', wal be swept fee of sand and debris annually after the last snowfall. 76.6 70.0 BOTTOM NOTE: < ... NO GPOUNOWATER 1. .: OPG. LOAM (TOPSOIL) MAY BE STRIPPED, STOCKPILED AND RE -USED AS PLANTING SOV_ FOR (AWNS PROVIDED iT IS PROCESSED TO MEET THE REQUIREMENTS OF THE SP= �9 CATIONS. 2., LOAMY SAND OR LOAMY SAND AND GRAVEL (SUBSOIL) SHAH BE.REMOVED FROM TO 3 FT BELOW PAVEMENT AND BELOW AND 10' LATERALLY FROM DRAINAGE STR'JCTURES TO ITS MAXIMUM DEPTH. `LOAMY SAND AND GRAVEL MAY BE USED FOR FILL OUTSIDE OF THE PAVEMENT AREA. 3. MEDPJIA SAND MAY BE USED AS FiLL 1N ALL AREAS.O 0 UJ 0) - ' �p F-- p O 0) 4. ALL EXCESS SOIL- MATERIALS SHALL BE REMOVED FROM SITE. _ = -Q •- 1+J OQ ;co W = W Z UJ ¢ ¢ J U) U 0 �p C.T. FRAME AND COVER 6'HIGH CHAIN-LINK FENCE ' �3 ' LEVEL SECTION 22� Z ;� ¢ t Z, - -- - 21 a-= >< ¢ >- -X 2. Artn fiFFn nNcny_ 0 20 w O O n_ w O ,� ELEV. }8.00 : f� 17 Z.. r) 0 CK _ Y Q w a , < HDPE PIPE SOT M. LEVEL 0 `ELEV. 15.00 . ' 15 Y d '. N, Q 4T ' t D SEEDAM D SEED O w U o ON COMPACTED FILL � (J 5 Of � F n O MANHOLE (MH3) NON -WOVEN FILTER FABRIC SECTIOf� A A 3�4" WASHED STONE BEDDING `, O- p .� m r;�TES: REMOVE ANY UNSUITABLE MATERIALS AND REPLACE WITH CLEAN U STOP.- r^- THIS STR'JCT,,r- SHALL PE'DURAQLE BROKEN SAND AND GRAVEL TO AT LEAST iO FT LATERALLY FROM THE �- ROC^: 'V' 3 A SIX IN> M-1 DIVENSION.L EACH STONE ��. LIMITS OF THIS STRUCTURE. `,,(SEE TH3) SHA _L V'r1_.N. NOT LESS THAN 15 POUNDS 'NOP MOPE THA'v 75 POUNDS. AT LEAST 757, OF THE VOLUME SHALL U COP: >C' r STONES YE',1 ^:G NOT"LESS THAN 50 POUNDS EACH, DETAIL =-- FLARED END'L SECTi©N (FS1) 99f� t SHEET 2:'OF, 5 .. n DCT JOB N0 99-031