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Home My WebLink About20001449 Ver 2_Site Plan_20060907 N r ~ O N CD rx.-• , N rv/~ ~ ~ r i ~ I __~I_ - r"' 1 ~ ~ I, 1 i 'o I f` ~ I ~ ~ 11 ~ I ~ ~ y. _..._z . F . i ~ ~ ~ _ . . ~ r. ~ y....... - N f M WETLAND #I SPILLWAY (50-YR EVENT) / r' ; U!'r ~ i ~ ~ ~ ~ 1 ~ ; ~ k. E, O eV 1 ~5 TOP OF DAM ELEV = 631.5 ~ ~ , i" f j I ~ } ~ j" 1 `3. i I l f ~ f 1. ago ~ ~ TOP OF SPILLWAY ELEV = 628.6 Y rj ~ I ! , I i -j- ~ r- ~ U O LENGTH OF WEIR = 20' t ~ Q ~ ~ ~ ~ I j . ~ r.. ~ ! i E I.L O s. *~*RIP RAP APRON AND SPILLWAY TO BE ` / ;l cX Ln N ARMORED WITH d50 = 6" STONE ~ .t , 4, APRON DIMENSION MIN. 10'L X 20'W X I'D + ; ~ ~ . B ~ . f ~ / I 46 47 i M M i I _ _ r~1 ~ ! t ,M ) . ~ { , { p` Z O J 1 ~ ~i ~ ~ - ~ ~ ~ M ~ ~ - ~ F.F. ELEV. F F.F. ELEV. I { F.F. ELEV. ~ F.F. ELEV. F.F. ELEV. F.. i.... o m ~ 1 N a i 638.00 638.00 . - - o r~.. i 63.00 640.00 640.00 642.00 a°~ ~ F ~ ~ f i` J _ / ~ / ~ ~ - i~; . i ' i ..........M....... - .-..._..A; - - - ~ ._1 ~,~11{{!1111/,, - ~ , M. ~ ~ r ~ r^ I ~I • 1 J.. ~ t ~ t'. . - : i . ; ~ CORPORATE ALL 3:1 SLOPES ON OUTSIDE BERM OF n~ur,s , { ~ / e (621.00) ~ ~ ~ I ~ ~ ~ SEAL _ WETLANDS & BIORETENTION AREAS 3 `"r~~ ~ ~ ~h o ~ ~ \ ~ . ti > - _ j SHALL BE REINFORECED WITH NAG SI50 ' 1/ I ` J /"T'~~~ ~ _ _ _ _ _ _ _ _ _ ~ _ OR APPROVED E UAL F ~j t i _ ~ ~ ~ I a 1 y ' e ~l '13A[? 6 0 61475 1 .I • ..,.,.,,_...,m,.,, _ C A.g \ ~ - /y t4 613 50 \ ~~ti ~ .-;'~ti. ` - i ' ~ ...f „R ~ ~ ~ ~ ~ ~ ~ ~ y I ~ ~ ` 1 G~ ~ ~ / , , ~ / / 6225 v~ i ® ~ '~6 ti 63p , . ®R8 ~ ~ L 1164 i , ° 628 ~bz..flo> d ~ • 6. . , , WETLAND #I OUTLET STRUCTURE e 3'X3' BOX .TOP ELEV = 6275 I = i I r B I ( , ' I bza 24 < 61 - {'W 6" ROUND ORIFICE; INV ELEV = 626.4 ` I ` ~ ~ l / ^ ~ ~ 2.0" WQ DEWATERING PIPE; ELEV = 624A x 6 x ! ~ 672:Sti ~ ~ ~ ~ .1'1 6" PERM. POOL DEWATERING PIPE WITH ` % \ \ ~ ` I / GATE VALVE & LIFE ROD; INV ELEV 622.5 ~ ~ O bz415 ~ - . . _ - . _ . arm, 8x2.5 y t , ~ ~ , \ v " . \ Y. \ ~ 61425 MICRC?POC~L , - J it 1:00 ~ ~ . _ l t. f,. ~ 1 , . S ~ ~ \ ~ FOREBAY ~ ~ I ' ~ ' ~ . a , 3 , pp ~ ( (621.00) ~ ~~u -i ' ~ ~ ~OREBAY %O , \ ~ ~ ~ / ~ ~ ~ / - 10 (6Z . 0} . , ~ \ I , ALL 3:1 SLOPES ON OUTSIDE BERM OF \ ~ ~ l....- WETLANDS & BIORETENTION AREAS i,. ~ • g3 6 V / ~ \ , - \ ~ \ , y R 2 SHALL BE REINFORECED WITH NAG SI50 6 S 9 ti, . ` ~ 9x9 ~ OR APPROVED E UAL 6 89 ~ e ~ - _ _ ~ / _ : ~ j: WETLAND #2 OUTLET STRUCTURE ' . 3'X3' BOX ;TOP ELEV = 625.3 i y. f~ ~ : i ~ _ ~ „ / 6" ROUND ORIFICE; INY ELEV = 624.75 ~ ~ _ r ' I.0" WQ DEWATERING PIPE; ELEV = 624.0 j ~ ~ / ~ ~ ~ / o~ b" PERM. POOL DEWATERING PIPE WITH y.;~t ~ \ ` \ ' GATE VALVE & LIFE ROD; INV ELEV= 622.5 - HARD EDGE LEVEL 5PRE LEVEL SPREADER I/ . ~ ~ ~ 0 0 ~ . ` ELEV = 62.5 ~ ~ ~ LENGTH = 70 LF LF ! . j~ . 60' - 12" RCP AT I.00% SLOPE WITH FES; \ ~ o a ~ o 20'L X 12'W X I'D RIP RAP APRON _ / (SEE DETAIL) ~ ~ . a s ~m , ~ . o r ®m . '0 \ 60' - 12" RCP AT I.00% SLOPE WITH FES; . 'Q . , j 20'L X 12'W X I'D RIP RAP APRON . _ ~ o UNDERDRAIN SYSTEM FAR ~ (SEE DETAIL) ' ~ ~ .y ~ / C~ . ~ R~ NT!® y \ \ r' ~ _ . ; SEE ~ETA1L ON C-17b ~ ) ,.;-,,.,,e, (A J= G - ,.1 ~~~~11 ~ j~ o+ ~ ~ p ~ ~ 0 ME= cn - ® . r rr . ~ ~ r ~ V~ WETLAND #2 SPILLWAY (50-YR EV S~Q~~ \ - TOP OF DAM ELEV = 628.0 i ~ : ~ ALL 3:1 SL®PES t~N QUTSIDE BERM ~F ~ X50 YR EVENT) ~ ' WETLANDS ~ ~I®RETENTI®N AREAS , ` -~Q y _ 8.0 TOP OF SPILLWAY ELEV = 625.5 SHALL ~E RLINF~RECEC~ WITH NAG SI50 _ _ C~ = 625.5 70 Nk. { ~QO - _ / LENGTH OF WEIR = 10' ~R APPR®VED E UAL i r ~ ,f'' ~ ; i ~ / ~ ` \ ` . **RIP RAP APRON AND SPILLWAY ~ \ ~ ~ _w \ ARMORED WITH d50 = 6" STONE SPIL VV Y TO ~E ~ ~ L A a '`C~ ~ / / ~ AlTD llwl I1IMCAICIf1AI MIAI I!1'1 V 7A' 6 STONE ~ . _ ~ taa - ~i s n E v 7n r,or v a n 4 < ct; q oA b i6 n MAWTENANCE REQUIREMENTS 1. WETLAND WILL NEED TO BE CLEANED OUT WHEN SIX (6) EXTENDED DETENTION WE ~"~AND #1 EATENNU INCHES OF DEPOSITION HAVE ACCUMULATED. ENDED DETENTION WETLAND #2ft BIUMETENTION #1 cn cn cn s www. 2. SEDIMENT REMOVAL MAY BE ACCOMPLISHED WITH A LU 7 3- 37 PORTABLE MACHINE SUCH AS A MuDCAT OR BACKHOE. 0 0 0 THE TOP FEW INCHES OF SEDIMENT SHOULD BE STOCKPILED PERMANENT POOL REQUIREMENTS (EXTENDED DETENTION WETLAND 40): PERMANENT PI ANENT POOL REQUIREMENTS (EXTENDED DETENTION WETLAND #2): REQUIREMENTS (BIORETENTION #1): U<<< SO THAT IT CAN BE RESPREAD OVER THE SURFACE OF THE ZZZZ WETLAND AFTER SEDIMENT REMOVAL Opp REQUIRED REQUIRED PROVIDED REQUIRED PROVIDED ~QQQ 3. REMOVE TWICE (2) ANNUALLY DEBRIS THAT HAS COLLECTED IN THE WETLAND. SURFACE AREA: 8,530.24 SF 9,055.84 SF SURFACE 4. INSPECT THE WETLAND ANNUALLY AFTER A RAIN EVENT HIGH MARSH PLANTS: 31110.18 SF 3,200.25 5F HIGH MA TO INSURE THAT THE FACILITY IS OPERATING AS DESIGNED. af, Lu Uj Lu SURFACE AREA: 7,79071 SF 31977.24 SF SURFACE AREA: 769 SF 1,527.81 SF is w0- o- CL .a Q LIJ Q ® o LLJ w cn (n V) iIGH MARSH PLANTS: 626.75 SF 1,397.25 SF V)- ?n j ~ C.LI CLI o r*" af, 1C Z o_ 5. THE FOLLOWING ITEMS SHOULD BE INCLUDED IN THE LOW MARSH PLANTS: 3,110.18 SF 31175.54 SF LOW MAF OW MARSH PLANTS: 626.75 SF 11395.95 SF ® 1 ,G .f) .o .a vwooo z INSPECTION: e N ` z CLOGGING OF THE OUTLET OR TOO RAPID A RELEASE, MICROPOOL: 31332.94 SF 086.38 SF MICROPO( EROSION ON THE BANKS, 4ICROPOOL: 268.60 SF 600.55 SF ---NNd' W Ew EROSION AT THE INLET AND OUTLET, 4 A SEDIMENT ACCUMULATION AND THE NEED FOR REMOVAL, VOLUME REQUIREMENTS (PROVIDED) VOLUME RE( cn A CONDITION OF THE EMERGENCY SPILLWAY, AND LUME REQUIREMENTS (PROVIDED) cJ A WOODY VEGETATION IN THE EMBANKMENT. 00 d CL O PERMANENT POOL VOLUME: 14,327 CF PERMAN PERMANENT POOL VOLUME: 7,792 CF _ SAP ~ 2006 TEMPORARY BENCH MARK dr O =."Iw,4NAIL IN PC+WER POLE Awl A AV Om Ln C. ON GRAPHIC SCALE IN FEET TEMPORARY POOL VOLUME: 191#057 CF TEMPOR TEMPORARY POOL VOLUME: 5,416 CF WEST OF COLVARD DRIVE ~Qco 20 0 20 40 60 ON z Z ED w M ° FOREBAY VOLUME (20% OF P.P.): 21865 CF FOREBA FOREBAY VOLUME (20% OF P.P.): 11558 CF ELEV. 659.89 Q W t = U O w o SEE SHEET C-3 FOR LOCATION r) r) r) u Ov) CL V) U J