20001449 Ver 2_Site Plan_20070308

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1. PLANTING SOIL BED TO BE A MINIMUM OF 4 FT. !N DEPTH. SOIL MUST BE SANQY LOAM LOAMY SAN D
OR.LOAM TEXTURE WITH A CLAY CONTENT RATING FROM 10 TO 15 PERCENT: THE SOIL MUST HAVE AN O N
INFILTRATION RATE OF AT LEAST 1 WCH PER HOUR AND A PH BETWEEN 5,5 AND 6.5. IN ADDITION, i. M N M
THE PLANTWG SOIL SHOULD HAVE A i.5 TO 3 PERCENT .ORGANIC CONTENT AND A MAXIMUM 500-PPM CONCENTRATION OF SOLUBLE SALTS. Vo
2. THE MAXIMUM PONDING DEPTH IN THE BIO-RETENTION AREA SHALL BE 6 TO 9 INCHES. ii o
3. A MULCH LAYER SHALL BE PROVIDED CONSISTING OF 2 TO 4 INCHES OF COMMERCIALLY AVAILABLE u ti Ln
.FINE SHREDDEQ HARQWOOQ MULCH OR SHREQQEQ HARDWOOD CHIPS.
4. THE UNDERDRAW COLLECTION SYSTEM SHALL BEE UIPPEQ WITH A 6-INCH PERFORATED PVC PIPE IN Q AN 12-INCH GRAVEL LAYER. THE PIPE SHOULQ HAVE 3/8-INCH PERFORATIONS, SPACEQ ON 6-INCH M C
CENTERS WITH A MWIMUM OF 3 HOLES PER ROW. THE PIPE IS SPACED AT A MAXIMUM OF 10 FT. ON
. S PE HA ` ~E CENTER,. AND A MINIMUM OF 0 5 / LO S LLB MAINTAINED. A PERMEABLE FILTER FABRIC IS M
PLACED BETWEEN THE PLANTING SOIL BED AND. THE GRAVEL LAYER, N N ' v
5. THE FILLBERM OVERFLOW WEIR SHALL BE COMPACTED TO 95% STANDARQ PROCTOR WITH SOIL THAT 1 IS NOT HIGHLY PERMEABLE 0R WHICH DOES NOT EXHIBIT SIGNIFICANT SHRWK SWELL OR DISPERSION
PROPERTIES.
6. PERMANENT GROUND COVER SHALL BE ESTABLISHED ON THE BERM WITH A PERMANENT EROSION CONTROL
MATTWG BEING UTILIZED, 7. A RIP-RAP APRON SHALL BE ESTABLISHED AT THE FLARED END SECTION DISCHARGING TO THE BIORETENTION tttJllllllll/,~
FACILITY TO REDUCE VELOCITY AND PREVENT EROSION.
8. SLOPES SHALL BE GRADED NO STEEPER THAN 2:1.
' 9. STRUCTURES OR FLARED END SECTIONS AT ALL INLETS AND OUTLETS OF ALL PIPE SYSTEMS (NO CMP CORPORATE '
OR HDPE FES ALLOWED) CSWDM 6.5.91 i0. MINIMUM 2' COVER ON PIPES.
11. RIPRAP FOR ALL PIPE OUTFACES. (0% SLOPE MW. C=10' MIN. DEPTH=10" CMLDS # 20.23 I l SEA'L.-*
CAg
2" - 3" DOUBLE HAMMERED HARDW001 ousLE HARDWOOD PONDING AREA ~lllrltlitltt .
UNDERDRAIN COLLECTION MULCH SYSTEM (5" PERF. PVG CLEANOUT fT0 BE 6" - 9" MAX. CONSTRUCTION SE UENCE.
INSTALLED EVERY 50') g `\tt tt III 1 1~~
AMMENDED SOIL CONSISTS ° THE CONTRACTOR SHALL FOLLOW THE BELOW CONSTRUCTION SEQUENCE. IT IS ABSOLUTELY REQUIRED OF 80 CREEK SAND AND ® A oL .'ESA .•,l
' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' 20% COMPOST. THAT ONCE THE PLANTING SOIL IS INSTALLED NO SEDIMENTATION BE ALLOWED TO CONTAMINATE THE r3 ` •V7
(TO BE CERTIFIED FOR i YR.) DEVICE, lF CONTAMINATION OCCURS THE CONTRACTOR WILL BE REQUIRED TO REMOVE AND REPLACE THE 1 AT HIS T. PLANTING SO L COS Q _ SEAL
6» SOLID PVC DISCHARGE END OF RIP RAP l.E. SHOWN ON PLAN no ; 211'64
CHANNEL ' ' ' ' . , , 5 0 (FOR BIORETENTION 1, 2 & 3 ONLY) i. ROUGH GRADING. Q
PROVIDE A 5'x3'x5" RlP-RAP - ~ ~ "r" m~ APRON AT ALL PVC SUBDRAIN NON WOVEN 2. EXCAVATION OF RETENTION AREA. JON-WOVEN . . . 3. NO ADDITIONAL WORK WILL BE PERFORMED IN THE CONSTRUCTION OF THE RETENTION AREA UNTIL FNGINE~:•~
FILTER FABRIC OUTLETS. 1LTER FABRIC ; x , ~ , ; ' , _ L ~ ; . ~ 1' LATERAL. SANq BED r r , , , CONTRIBUTING DRAINAGE AREA i5 GRADED AND STABILIZED. t (BIORETENTiON FACILITIES ~ 111111Iii111t~
` 4. IF RETENTION AREAS ARE USED FOR SEDIMENT AND EROSION CONTROL DURING SITE CONSTRUCTION ' -s , 1;2,&3ONLY) , . , , . A. .
BERM/OVERFLOW WEIR ACTIVITIES,. ANQ AFTER THE SITE IS STABILIZEQ, THE RETEN?EON AREA SHALL BE UNDER CUT TO 0 0
GRAVEL l REMOVE ALL SEDIMENT. a 5. FINAL GRADING AND EXCAVATION OF RETENTION AREA. GRAVEL LAYER
#57 SIZE #57 SIZE STONE 6. UNDERQRAlN PIPING AND GRAVEL INSTALLATION. ~r
- 8" MWIM~ 8" MWIMUM 7, GRADED SLOPES ADJACENT TO RETENTION AREAS SHALL BE TREATED WITH POLYECRiIMIDES TO
UNDERDR COLLECT! STABILIZE S01L EROSION CONTROL MATTING INSTALLED AND SLOPES SEEDED. UNDERDRAW , COLLECTION 8. INSTALLATION OF ENGINEERED SOIL IN RETENTION AREA.
PONDER AREA 6" PERFO I (6" .PERFORATED PIPE) 9. INSTALLATION OF LANDSCAPING AND MULCH.
APING: LANDSC
1
-1 FOR BIORETENTiON LANDSCAPING .NOTES AND DETAIL SEE SHEET C 6
ETENTiON FACILITIES OPERATION AND .MAINTENANCE AGREEMENT: BIOR
` THE HOMEOWNERS ASSOCIATION IS RESPONSIBLE T4 PERIODICALLY C! EAN THE FACILITY REMULCH AND REPLACE DEAD, QYING OR DISEASED PLANT MATERIAL. UNDER NO CIRCUMSTANCES WILL THERE BE
HARD SURFACE LEVEL SPREADER TO EXTEND APPROX. 1 INCH ABOVE ALLOWED TO HAVE ANY SEDIMENT OR EROSION TRANSPORTED TO THE BIORETENTION FAC~ITIES OR r
' iii i GRADE TO DETER .EROSION OF BERM. ' ~I J SUGGEST 5x6 OLM W AN ZED ANY OTHER WFLUENT WHICH MAY CREATE AN IMPERMEABLE LAYER ON .THE FACILITIES.
_I I TIE ANCHORED WITH 4' LONG REBAR I-' i _ SECTIONS 0 6' CENT
L 3 N ERS TIO SYSTEM 1S DEFINED AS THE RETENTION AREA (PONDWG AREA) MULCH AND THE BIORETEN N , LANDSCAPING WITMN THE RETENTION AREA, AMENDED SOIL OR PLANTING SOIL SUBGRADE AND
1 ET TI BI SUBDRAW WITH GRAVEL BED AND FILTER FABRIC.
STABILZE FILL BERM W/ IP-RAP APRON ,
!LEVEL) PERMANENT MATTING S150 PER NORTH AMERICAN GREEN ' FOR .THE FIRST. COUPLE YEARS PLANTS AND TREES MAY NEED WATER UNTIL THEY BECOME ESTABLISHED. • a~~
PONDWG AREA » ESTABLISH GRASS PER 6
SEEDWG SPECIFICATIONS . - III-1 i l~ MAINTENANCE AC11VlTIES SHALL BE PERFORMED AS FOLLOWS:.
6" 1. AFTER EVERY SIGNIFICANT RUNOFF PRODUCING RAINFALL EVENT ANQ AT LEAST MONTHLY:
~'I~II~II~ - III-11 III =11 _ . . . 3 - A. VISUALLY WSPECT ANQ REPAIR ANY ERODED AREAS, REMOVE TRASH AND DEBRIS.
,II~II~ I~II~ II=T~Ii ~ , , . , il~Tl~ll II~III-II I ~ . . B. RE-MULCH ANY VOID AREAS BY HAND AS NEEDED.
-il III=I-III_T~I - - - C. AFTER RAINSTORMS INSPECT THE RETENTION CELL AND MAKE SURF DRAINAGE PATHS ARE CLEAR V J
~ 3 AND THAT PONDiNG WATER DISSIPATES OVER 4-6 HOURS. KEEP IN MIND, THE BIORETENTION CELL IS NOT A POND. IT SHOULD NOT PROVIDE A BREEDING GROUND FOR MOS UITOS: MOS UITOS Q Q J
_ BERMIOVERFLOW WEIR NON WOVEN NEED AT LEAST 4 DAYSOF STANDING WATER TO DEVELOP AS LARVA.
COMPACTED TO 95% FILTER FABRIC F ~ ~ ~ ~ STANDARD PROCTOR ,r. 1 ti . D. WEED REGULARLY iF NEEDED, ® Q
P LATERAL SAND BED : 2: EVERY 6 MONTHS: W
CLEANOUT ° B ELE a° ~ a o 0 0 A. ADD A FRESH LAYER OF MULCH AS NEEDED: THE PREVIOUS .MULCH MAY BE REMOVED AND DISCARDEDTO AN APPROPRIATE DISPOSAL AREA OR RETAINEQ IF 1T 15 DECAYED. THE MULCH SHOULD
° p BE PLACED TO DEPTHS NOT TO EXCEED 3". SEEDED GROUND COVER OR GRASS AREAS SHOULD NOT ea
~ RAVE A E G LL YR #57 SIZE STONE RECEIVE MULCHING.
8" MWIMUM B. VISUALLY WSPECT VEGETATION FOR .DECEASE OR PEST PROBLEMS, IF TREATMENT IS WARRANTED. USE LEAST TOXIC APPROACH. REMOVE AND REPLACE ALL DEAQ AND DECEASED VEGETATION O
6" SOLID PVC UNDERDRAIN CONSIQERED BEYOND TREATMENT.
COLLECTION f 5" PERFORATED PIPE) 3. ANNUALLY: . nn.. a nn..e a a r a ..i a . r. rr nn ~r~..n•r m me e a n r .a arn•r~a.r
A. (.hitt-K I Ht Phi UI- I Ht MAN i INU SuIL. ArrL v AN ALKAuNt rKUUUI, l , 3LA r1 A3 LIMC3I UNt, L.j U) LU
IF NEEDED. B. PRUNE EXCESS GROWTH, I RIMMED MATERIALS MAY BE RECYCLED BACK IN THE REPLENISHED
MULCH OR LAND FILLED IF THERL IS A CONCERN OF HEAVY METALS ACCUMULATION. cc3 ~ W W. _ ~ w
C. CORE AERATION OR CULTIVATING OF UNVEGETATED AREAS MAY BE REQUIRED TO ENSURE 4mJ
SECTION-, -TYPICAL ADEQUATE FILTRATION. t'C3 cd °C Q
D. THE OVERFLOW STRUCTURE SHOULD BE INSPECTED TO ENSURE THAT IT IS FUNCTIONING. ACCUMULATED TRASH AND DEBRIS SHOULD BE REMOVED AS NECESSARY. U co
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CLASS B CONCRETE
' TO BE USED
UTILITY BRICK OF TY BRICK
Y PERATION AND "MAINTENANCE 0
MK B ~ SEEDBED PREPARATION NOTES N O s. N
~ aass aR MEDUW StLE OF RPRAP AND , WoTH AND n~ of APRON INSPECTION EVERY MONTH TO INCLUDE THE FOLLOWING: co
TO DESIC>~ID BY THE EN(~FR. 1. SURFACE WATER CONTROL MEASURES TO BE INSTALLED ACCORDING 1 1. CHECK AND CLEAR THE ORIFICE OF ANY OBSTRUCTIONS. ACCORDING TO P IR ERODED AREAS BEFORE THE NEXT 2. CHECK THE WETLAND SIDE SLOPES; REMOVE TRASH AND RE A 3' u
2 RPRAP SHOUD IXTEAD UP BOTH SaDES OF TFE APRON AND AROUP~ THE END PLAN.' COMPLETE GRADING BEFORE PREPARING SEEDBED. RAINFALL EVENT. -1 AVAILABLE Z .o
OF THE PPE OR CULVERT AT TFE D15t~lARGE OtTTttrT AT A MAXIMUM SLOPE OF 2. AREAS TO BE SEEDED SHALL BE RIPPED AND. SPREAD WITH AVAILABLE ~1 AND A HEIGFi~' NOT LESS THAN TWO THRDS TIC PPE DIAME7'1Bt OR TOPSOIL 3" DEEP ON SLOPES 2:1 OR FLATTER. TOTAL SEEDBED :DBED INSPECTION EVERY 3 MONTHS TO INCLUDE THE. FOLLOWING: M O C4
CULVERT PREPARED DEPTH SHALL BE 4" TO 6" DEEP. IF SOILS ARE COMPACTED DURING GRADING LOOSEN TO A DEPTH OF b" TO 8". . i SPECT THE COLLECT{ON SYSTEM (LE. CATCH BASINS PIPING .GRASSED SWALES) FOR 12" RCP 1 N , b" TO 8". PROPER FUNCTIONING. CLEAR ACCUMULATED TRASH FROM BASW GRATES AND BASIN M (WATERTIGHT) L M
3, THERE SHALL. BE NO OVBtfl.OW I~tOM THE END OF THE APRON TO 7FE SURFACE OF THE RECHVNG CHAMEI. TFR AREA Ta BE PAVED OR RPRAPPED 3. LOOSE ROCKS, ROOTS AND OTHER OBSTRUCTIONS SHALL BE REMOVE .L BE REMOVED ~ BOTTOMS, AND CHECK PIPING FOR OBSTRUCTIONS. LIGHT) = s uo
3 UNDERCUT SO THAT THE NVEitT OF THE APRON SHALL BE AT THE , FROM THE SURFACE TO PREVENT INTERFERENCE WITH ESTABLISHMENT SHALL l~ SAME c~ADE ~usHO wrrH THE SUtFACE OF THE Rl~c~vlNC CHAMB. THIi AND MAINTENANCE OF VEGETATION. 'ABLISHMENT RIPRAP AND REPAIR BROKEN"PIPES. 1.0" DIA. WQ 2. CHECK WETLAND INLET PIPES FOR UNDERCUTTWG, REPLACE , E a~ ~ O
APRON SHALL HAVE A CUTt)FF OR TOE WALL AT THE DOW~NS'fREAM EhD. 4. APPLY LIME ACCORDING TO SOIL TEST RECOMMENDATIONS. SOILS RELEASE )NS. SQ1LS 3. RESEED GRASS SWALES TWICE A YEAR AS NECESSARY. REPAIR ERODED AREAS IMMEDIATELY. ~ u cn Ln ao
WITH H HIGHER THAN 6 NEED NOT BE LIMED. IF H 1S NOT a. THE WDTH OF THE EI~D THE APRON SHALL BE EQUAL TO THE t~OT?OM p ~ NOT INSPECTION EVERY 6 MONTHS TO INCLUDE THE FOLLOWING: 'IONS BELOW. S. I DEPTH IS 6" OR N •y
TH OF THE R[{811NG QiANNH. MAXIMUM TAPER TO REC811NG QiAI'~. 5~t KNOWN, APPLY LIME ACCORDING TO SEEDING SPECIFICATIONS BELOW. VVID 0 APPLY LIMESTONE AND INCORPORATE INTO TOP 4" TO 6" OF SOIL. 1. CHECK SEDIMENT DEPOSITION DEPTH AT VARIOUS POINTS IN THE WETLAND F , i' OF SOIL. ~ ~ GREATER, SEDIMENT SHALL BE REMOVED AND WETLAND SHALL BE RESTORED TO ORIGINAL DESIGN t o
S. ALL SUBQtADE FOR STRUCTURE TO BE COMPACTED TO 9546 OR GREATER. 5. APPLY FERTILIZER ACCORDING TO S01L TEST RECOMMENDATIONS. 1F NO SOIL TEST HAS BEEN PERFORMED, APPLY FERTILIZER ACCORDING CATIONS. 1F CCORDING DEPTH. M ro
O 6. TtE PLACNG OF FLL, ETIHBt LOOSE OR COMPACtED N THE RI:CBVNG S OW. PLAN TO SEEDING SPECIFICATION BEL GHANi~B. SHALL NOT BE ALLON?ED, 2; OWNER IS RESPONSIBLE FOR PROVIDING A PUMP TO DRAIN THE POND AND FOREBAYS FOR ROUTINE z
6. ROUGHEN SEEDBED SURFACE PRIOR TO APPLICATION. GROOVE OR B 7. NO BENDS OR CUtVES N THE HORQONTAL }OLI(~IT OF TI•E APRON WEl. FURROW SLOPES STEEPER THAN 3:1. t00VE OR MAINTENANCE AND CLEAN OUTS, IF NEEDED. ANTIFLOATATION BLOCK TO 3. OWNER IS RESPONSIBLE FOR TREATING .THE POND WITH POLYACRYLAMiDE PER MANUFACTURER K TO N
L BE PBiA~TI'TED 7. FOR TEMPORARY SEEDING OF AREAS WHICH WILL NOT BE BROUGHT BE 4'x4'x1.1' CONCRETE PAD 3E BROUGHT TO SPECIFICATIONS AND CONTACTING THE CITY OF CHARLOTTE EROSION CONTROL OFFICE PRIOR TO PAD
FINAL GRADE FOR MORE THAN 15 WORKING DAYS, FOLLOW THE (1D' MW TEMPORARY SEEDING SPECIE{CATIONS BELOW. OW THE (SEE CALCULATIONS) DRAINWG THE POND FOR ROUTINE MAINTENANCE AND CLEANOUTS,
S C S TLANDS TO ENSURE THAT THE BASIN IS 4. AFTER A RAINFALL EVENT, iN PET TORMWATER WE 4,
W NATURAL GRADE OPERATING AS DESIGNED. A D SIDE SLOPES" AND REMOVE ANY WOODED VEGETATION. 5. INSPECT WETL N
III . COAT INSIDE & OUTSIDE MAWTENANCE AS REQUIRED: OF BRICK RISER -WITH TYPE
- PERMANENT .SEEDING SPECIFICATIONS PS 'S 1. MOW. THE SIDE SLOPES ACCORDING TO THE SEASON. MAXIMUM GRASS HEIGHT WILL BE 6". "S" WATER PROOF CEMENT
RP RAP I H III I II- LOW MAINTENANCE AREAS 2. THE ORIFICE IS DESIGNED" TO DRAW DOWN THE POND W 4-6 DAYS. iF DRAWDOWN IS NOT WE CLOGGING / CORPORATE
II 51RUCTURE 0-F10W lAMElfR OF OUTLET' APRON APRON APRON STON£ I - ICES} P1Pf VELOCITY LENGTH W1O1H THICKNESS CLASS STEEP. SLOPES OR STONY, SHALLOW OR DRY SOILS ACCOMPLISHED IN THAT TIME, THE SYSTEM .MAY BE CLOGGED. THE SOURCE OFT ~ , )TLS MUST BE FOUND AND ELIMINATED.. ~ ~
(tn!} (FPS.) (~N.) DATES TYPE RATE / / RATE MUST BE KEPT IN GOOD WORKING ORDER. / / 3. ALL COMPONENTS OF THE STORMWATER WETLAND SYSTEM TOP OF WEIR = 625.3 SEAL
- 12" 2 AUG. 25 -SEPT. 15 TALL FESCUE 100 LB WET.1 9.33 1 4.54 20 12 i 4. ALL NOXIOUS OR INVASIVE PLANTS SUCH AS CATTAIL, SHALL BE REMOVED TO -AVOID 100 LB/ACRE r
FEB: 15 -MAR, 21 5ERICEA LESPEDEZA 30 LBO 4' fS WASIfO STONE 12" 2 A WET. 2 1.16 1 4.45 20 12 KOBE LESPEDEZ 10 LBO 30 LB/ACRE MONOPOLIZATION AND CREATION OF MONO-CULTURE SYSTEM." 10 LB/ACRE
LAYER OF RTER FABRIC NOTEi UM H-2/3 GENTLE SLOPES, AVERAGE SOILS 6„ DIA. ORIFlCE 1
~ DATES TY E P RATE 624.75 RATE
SECTION B-B AUG. 25 -SEPT. 15 TALL FESCUE $0 LB, $0 LB/ACRE
FEB. 15 -MAR. 21 SERICEA LESPEDEZA 7.0 LB, 7.o LB/ACRE 1.0 DIA. W " Q
• KOBE LESPEDEZA 10 LB i NIGH MAINTENANCE AREAS 10 LB/ACRE ~ 624.0 RELEASE ~ • °F 'lam
GENTLE SLOPES, SOILS WITH AVERAGE OR BETTER MOISTURE, Y MY S G U E B OW THAT I AM RESPONSIBLE 623.25 GATE VALVE I ACKNOWLEDGE AND AGREE B I NA? R EL PERMANENT .R MOISTURE, COOL SITES FOR THE PERFORMANCE OF THE MAINTENANCE PROCEDURES LISTED ABOVE. 1 AND LIFT @g _ AL
DATES TYPE RA POOL GROUT WATER RATE AGREE TO NOTIFY DWQ OF ANY PROBLEMS WITH THE SYSTEM OR PRIOR TO ANY ROD TIGHT WATER - 21 i 64
AUG. 25 -SEPT. 15 BLEND OF TWO .TURF-TYPE 200 CHANGES TO THE SYSTEM OR RESPONSIBLE PARTY. POND BOTTOM = 622.5 tYPE 200 - 250 LB/ACRE
TALL FESCUES (90%) AND AND . r I ccNGINEE~.
TWO OR MORE KENTUCKY TOP OF DAM ELEV. WEIR ELEV. BLUEGRASS VAR1ETiES (10%) KY 10% 6" FLG x PE 'JJALL I - 12" RCP ( ) ~i I
631.50 628.60, GENTLE SLOPES, DRIER SOILS, PHYSICAL LIMITATIONS WETLAND ~ ~ INV OUT. PIPE -GROUT 620.1 WATERTI T rloNS hE~ r~.-u ~~..a.w.... . . . GH WATER TIGHT 16
DATES ~S~ TYPE RA WETLAND #2 628.00. 625.50 RATE ~.L i
AUG: 25 -SEPT. 15 BLEND OF 50% KY-31 TALL 200 TALL 200 - 250 LB/ACRE „i. ~ ;,,<M. ..n..M.. ,.~..n ...,.r.....,~ 62a.1 ,,.a~.4tt;,,., ..,..m
FESCUE AND 50% MIXTURE OF TWO OR MORE TURF TYPE 'LIRE . • . ' F TYPE
P F DAM TALL FESCUES F DAM ~ EIR VARIES TO O TOP 0 I _ L,' S . r. N I
i J . ~°°~.°M°°m°~~°~,.,. ~1, GRASS-LINED CHANNELS, AVERAGE SOILS SEE PLAN S''•' I . t, - ,'L.
I I DATES TYPE RE i ~ RATE - r I ~ ANTIFLOATATION BLOCK TO 3CK TO
/ / / / ~."'~°.'"°'I 1~ ~ ~ C ~ AUG. 25. - OCT. TALL FESCUE 20C ~ I \i\\~\~\~\\ } , i r - \ ~ 1 , GRASS-LINED CHANNELS, DRY SOILS 4 4 B 4'x ' ' 200 LB/ACRE OR . , ~ , . t ~ ~ 1'-0" E 4X1.1 CONCRETE PAD ~.{,}f.~ ~li ia.~'ti~.~ ! 1-:~:ip...iI'.)~.71~ ~..t~. .4{ .~;t{!{.1if.~ t~f:~. ~,c~ .,i flc..~.......,i~..l _ i..:,..".1. _.~.ii ,...3...,.... 4 - 5 LB/1000 5F E r (SEE CALCULATIONS) PE PAD
? ~ ~ ~ . 3 TYP. ~ I ArVA/VA/ . I~ ..~.wu . ~ ~ DATES ~ TYPE RF r/ t~9~: I.. I .~i;ll ..;'Ji+,. f.t,{~i `a IFu:1~ G '.,r' ;,~41t_ .,.a~(..~ ...t,+ .331~~~.., ~J _ ~ _ RATE
\ i i EMERGENCY SPILLWAY I ® _ r / ~ ~ APRIL 15 JUNE 30 COMMON BERMUDA GRASS 40 ASS 40 - 80 LB/ACRE OR _ .
1 - 2 LB/1000 SF i ' ~ '
r\//\ \ \ \ \ \ \ Y~':Y . r\\ ~\r AMENDMENTS SHALL BE APPLIED AT THE RATE OF 4000 LB ACRE OF r// / LB/ACRE OF GROUND = ,..3 f , c ~f ~ , ~ . _ N.T.S. -10 FERTILIZER. . , .,..r.. . .
- • AGRICULTURAL~LIMESTONE. AND 1000 LB/ACRE OF 10-10-10 FERTILIZ4 DRY SOIL GRASS-LINED CHANNELS SHALL USE 3000 LB ACRE OF GR ~ / ACRE OF GROUND / ~ ! il,." s ;`Jk ~'d/ri.~..~.14! ,.~.,.C;.!~r. Jt.: !~1'~!It'~C."..r'.L~i; !r:C.l1.!~r.1;:;F` (i i r- JCRETE
~~--~--P~ ptO~ON AGRICULTURAL LIMESTONE AND 500 LB/ACRE OF 10-10-10 FERTILIZEI MULCH SHALL BE APPLIED AT THE RATE OF 4000 LB/ACRE OF STRA1 -10 FERTILIZER. CLASS B CONCRETE ~RE OF STRAW. i~-~-~ - TO BE USED
CONTROt MATTWG STRAW SHALL BE ANCHORED BY, TACKING WITH ASPHALT. NETTING 01 ANCHORING T40L. JUTE OR EXCELSIOR MATTING SHALL BE USED IN t NETTING OR MULCH BE USED IN GRASS UT i UTILITY BRICK
LINED CHANNELS TO CALCULATED HIGH .WATER DEPTH. I ~ ,
1
.S. _ N.T
TEMPORARY SEEDING SPECIFICATIONS S rs 1
. DATES TYPE RATE A~ i 3' AMENDMENTS I
JAN. 1 -MAY 1 RYE GRAIN y 120 LB ACRE ( ) / /ACRE
FEB. 15 -MAR. 21 ANNUAL LESPEDEZA 50 LB/ACRE A( , i2„ RC /ACRE AGRICULTURAL LIME- ` STONE AND 750 L6/ 12" RCP
OR LOBE ST A( FE ACRE OF 10 0 0 FERTILIZER _ (WATERTIGHT)
DATES TYPE RATE A~ 2 DIA. W AMENDMENTS
RELEASE V)
MAY 1 -AUG. 15 GERMAN MILLET 40 LB/ACRE A( /ACRE . GENERAL NOTES AGRICULTURAL LIME- .
S1 A( STONE AND 750 LB/ ACRE OF 10-10-10
FE ' CLAYTON SHALL BE RESPONSIBLE FOR ROUTINE OPERATION AND MAINTENANCE.. FERTILIZER 1. HOMEOWNER S ASSO
DATES TYPE RATE A~ ESTABLISH GRASS ALONG THE WETLAND BANKS" AS SOON AS GRADING OPERATIONS 2. CONTRACTOR SHALL AMENDMENTS DICTATE. SEE PERMANENT SEEDING SPECIFICATIONS FOR SEEDING SCHEDULE, W
AUG. 15 =DEC. 30 RYE (GRAIN) 120 LB/ACRE E ER'S LANDSCAPE ARCHITECT ANTIFLOATATION BLC /ACRE 3. CONTRACTOR SHALL COORDINATE WITH THE OWNER AND TH OWN ATATION BLOCK TO Q
A( S. AGRICULTURAL LIME- BE 4'x4'x1.6' CONCRE7 FOR THE SELECTION OF PERMANENT AQUATIC PLANTS. STONE AND 1000 LB/ (SEE CALCULATIONS) (1.6' CONCRETE PAD .CULATIONS)
A( FE ACRE OF 10-10-10 4. 'THE GOVERNMENT OFFICE HAVWG JURISDICTION FOR WATERSHED PROTECTION AND THEIR- FERTILIZER POND FOR INSPECTIONS AND ASSIGNS SHALL HAVE RIGHT OF ACCESS TO THE PERMANENT
MAWTENANCE ENFORCEMENT. 4'
MULCH SHALL BE APPLIED AT THE RATE OF 4000 LB/ACRE STRAW. STRAW SHALL BE ANCHORED BY TACKING WITH ASPHALT. NETTING 0 CRE STRAW. NETTING OR MULCH
ANCHORING TOOL. COAT INSIDE & OUTSIDE OF BRICK RISER WITH TYPE 0
GRADED SLOPES AND FILLS -THE ANGLE FOR GRADED SLOPES AND SLOPES AND FILLS "S" WATERPROOF CEMENT W
SHALL BE NO GREATER THAN THE ANGLE WHICH CAN BE RETAINED B VEGETATIVE COVER OR OTHER ADEQUATE EROSION CONTROL DEVICES RETAINED BY ROL DEVICES OR e~
STRUCTURES. IN ANY EVENT, SLOPES LEFT EXPOSED SHALL, WITHIN WORKING DAYS OF COMPLETION OF ANY PHASE OF GRADING BE PLAN 1A L WITHIN 15 ~ / ~ L, / )LNG BE PLANTED OR ~ ~
OTHERWISE PROVIDED WITH GROUND COVER, DEVICES OR STRUCTURES SUFFICIENT TO RESTRAIN EROSION. STRUCTURES ! / 627.5. TOP OF WEIR
GROUND COVER -WHENEVER LAND DISTURBING ACTIVITY IS UNDERTA ( IS UNDERTAKEN ON vi
A TRACT COMPRISING MORE THAN ONE ACRE, IF MORE THAN ONE CONTIGUOUS ACRE IS UNCOVERED A GROUND COVER SUFFICIENT TO tHAN ONE M 6" DIA. ORIFICE 1i FFiCIENT TO - - 1
RESTRAIN EROSION MUST BE PLANTED OR OTHERWISE PROVIDE WITHIN 20VIDE WITHIN tS 626.4 L.J
WORKING DAYS ON THAT PORTION. OF THE TRACT UPON WHICH FURT ACTIVE CONSTRUCTION IS NOT BEING UNDERTAKEN, PROVIDED THAT T WHICH FURTHER - VIDED THAT THIS
SHALL NOT APPLY TO CLEARED LAND FORMING THE BASIN OF A RES LATER TO BE INUNDATED. SIN OF A RESERVOIR 2.0" DIA. WQ c
624A RELEASE. WETLAND #1 WETLAND #2
PERMANENT 623.25 GATE VALVE
ei, . I . AND LIFT POOL ceo TOP OF OVERFLOW POND BOTTOM 6225 TIGHT GROUT WATER 0 ~
TIGHT
OVERFLOW (BROADCRESTED) WEIR TO PASS WEIR ELEVATION 628.6 625.5 i . .
THE 50-YR STORM (SEE PLAN VIEW FOR 12" RCP (n Ln cn
DETAIL 6" RG x PE WALL i - INV OUT 12" RCP r=q TOP OF DAM 631.5 628A PIPE -GROUT bap (WATEtTlcr ELEVATION wnTea TIGHT (WATERTIGHT) Z Z Z
w w w UJZ5 37
15% OF TOTAL 70% OF TOTAL 15% OF TOTAL SURFACE AREA SURFACE AREA SURFACE AREA ~ STABILZE FILL BERM W/ PERMANENT MATTING e220
(FOREBAY) (MARSH) (MICROPOOL) S150 PER NORTH AMERICAN GREEN PERMANENT POOL Qooo UVU
'ICU ESTABLISH GRASS PER SEEDING 624.0 624A U<<<
207, OF TOTAL VOLUME SPECIFICATIONS ORIFICE INVERT ELEVATION 8000
(FOREBAY) 35% OF TOTAL 35% OF TOTAL 192„ ATATION BLOCK TO w Q Q Q
SURFACE -AREA- SURFACE AREA (9" TO 18" DEEP) (0" TO 9" DEEP) TOP OF OVERFLOW WEIR ORIFICE DIAMETER 1.5 0.75" ANT~FLOATA71oN st BE 4'x4'x1.6' CONCRE - - - (SEE CALCULATIONS) c1.6' CONCRETE PAD 1- 0 (D U
.CULATIONS) r~ w w w wMfl- CL
PROVIDE A 5'x3'x6° RIP.-RAP ~UjLuUj
STORM ~ BERM/OVERFLOW ~ APRON AT ALL PVC ORIFICE HIGH MARSH 623.25 623.25 WETLAND ski OUTLET STRUCTURE L, ryTURE Ln ~n ~n ~n
DRAINAGE WEIR coMPacrEn OUTLETS. ELEVATION N.T.S. zi~~~
PIPE //TO 95% STANDARD Z PROCTOR PERMANENT POOL / ORIFICE INVERT of 0 \0.0"o
LOW MARSH 622.5 622.5 N X000
ELEVATION t~Lr) NN
~~1----~ HIGH MARSH
LOW MARSH BOTTOM FOREBAY / 621.0 621.0
MICROPOOL BOTTOM FOREBAY ~ MICROPOOL ELEVATION
00
to O ?n`am - O
R/P-RAP APRON
(GRADE FLAT) om N
ZZ~mwu t
STO.RMWATE.R WETLANDS TYPICAL CROSS-SECTION
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. - is • • " t 24! ' ~"xx x~~ x~ x 0 ~ 0 0 256st 245st 510st 453sf 135st 325sf ~ l ~ IIO st ~ 000000000 ~i I
f •xx".%x• 00 sc ` 000 a f x,,xYKx, 0 0 0 SALA PAVI { t~ y`' I ~1"" I A~.$~ PCCO SACS ~ 5 T" DECD i 0 , IV,D ~ I o~ o
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~ 00 p 0 ' 6 s T,-.V..,, 4 ~ - j
0 a o D X:: ~ ; ; , ; ; , t 4 1 r i ~~:b23;1S~:~:~:~:~:~:~ ~ ~ 1 ~ I 1'' '/~i~ ~ oooOOOOOOOpO o° t t
o - 0 D 105 f D DD D D - _ 124st J i I vl~ j? j :X
0 D - .5 D D ~ D C62~ D _ 0 D D D D A D D p - - - - , Porn j ' ° - ;1.,.._,.., r,.- ,s Y
00 D DD ~ D D D r ICROPOO 0 0 0 D 325s D D 0000 - D , D x ~F PO 4 ~ 1 MICRO - x a . t
6~ ~ .Qd 0 p D - D 4 ) o D 0 D--- -D / 000 Dx - DD ~ 6 ~ f 1 (621.00} ~ D ~ ' , . ~
0 b - - D D 305f ~ 0 - 0 D D D ~ 467sf 1, • e• D ~J i
0 D - DD g ~I D - D D D 496st D - - ,p 0 D 54 st r ~ }y 0 0 D D ~ ~ 0 0 0 0 D D ~ VIMA ~ ` '
a D - D A`'`- f' ~ sAC~ D D D 87b f D D _ 0 0 DD D I l ` 0 D D 0 0 kt `i t
f D DD - D D D - .4' ~ D D 000 f 0 D ~3 s D ~ r' 4 .470st D I r t
• D 00 ry _ 0 D D 0 0 1 b ~ ACCA D D 0 .r ~ ,r ';k`~%34w-sr:. D p 0 0 Q A IvRS ® w, 7Q sf
- 0 0 - 00 - 000 .>i~ 't4i'1.i 0 • 234sf ? ~
000. 00 0 0 - 00p 280f t 6~2~4.~$ E ,r-~ J~ 187 sf t
~ ~ OOOp X0000 ' 0 0 ~@~ 0
~ 00 00 . 0 00 000 56 x~;,~r r 143sf { { r r / CIAL
~ 000000Q 00000 SA 192sf / ; r _ ` Fes," 5 ANq,. `~.~w
0000 t 0 0 „ ~ ~ ~ 1 r .
' ~ 0 0 ~ W ~ ~ 123 sf
0 I `'4 d' 230sf ' ~ rr DEC6 0 ` ~ I , s Poco 1 f p
y ~ ~'y1 2q i ~ 1y . ' t 1'~•~t V J
1 r ( E y Et } t ~a - rt 123 sf 3b8sf ; , . ~ i 133 sr `i`'
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1405sf ~ 4 i~ ~ << t
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PLANT SCHEDULE; EXTENDED DETENTION WETLAND #2 PLANT SCHEDULE; EXTENDED DETENTION WETLAND # I PLANT SCHEDULE. BIORETENTION # I
HIGH MARSH PLANTS HIGH MARSH PLANTS TREES
Symbol Code Quantity Scientific Name Common Name Size Comments Common Name Size Comments Symbol Code Qnty. Scientific Name Common Name Size Comments
a ° AN o ° ANGL 143 sf Andre lomeratus atus Bushy Bluestem I gal. min. T o.c. Q ACRU 2 Acer rubrum Red Maple 3" cal. min. Matched Specimen
GL 1,290sf Andropogon glomeratus Bushy Bluestem I gal, min. 3 ac. pogon $ JUEF 368 sf Common Rush I gal, min. 3' o.c. 0 BENH 3 Betula nigra River Birch 3" cal, min. Matched Specimen pppp zzzz
JUEF 1,405 sf Juncus effusa Common Rush I al. min. Juncus of{usa g 3 o.c.
PAVI 630 sf panicum vi Switch Grass I gal. min. T o,c. Switch Grass I gal. min. 3' o.c. JUVI 7 Juniperus virginiana Red Cedar 6-7' ht min. Matched Specimen 0000 UVuu
PEVI 844 sf Peftranda virginica Arrow Arum I gal, min. 2-2.5' o,c, PEVI 558 sf Peltranda virginica ~ Arrow Arum I gal, min. 2-2.5' o.c, SHRUBS ~~DI) D zzzz
fl 5ALA 630 sf Sa ittaria latifolia p SALA 550 sf Sagittaria latifolia o g Arrowhead I gal, min, 3 o,c, Arrowhead I gal. min. T o.c, Symbol Code Qnty. Scientific Name Common Name Size Comments 0000
1058 s{ SACE 559 sf Saururus cemuus SACS Saururus cemuus Lizard Tail I gal. min. 3 o.c. Lizard Tail I gal. min. 3' o.c. CLAL 7 Clethra alnifolia Summersweet Clethra 4' ht, min. Full, Matched SPecimen B&B 6' o.c. O.C. O.C. 0009
LOW MARSH PLANTS ILGS 14 Ilex glabra'SFamrnck' Shamrock InkberTy T ht. min. Full, Matched Specimen, B&B, 4' o.c.
LOW MARSH PLANTS Symbol Code Quantity Scientific Name Common Name Symbol Code Quantity Scientific Name IVJD 2 Ilex verticillata'Jim Dandy' Jim Dandy Winterben' 3' ht, min. Full, Matched Specimen, B&B, see Common Name Size Comments Y ~ ~ e plan ;ee plan Z F Z Z
~Y Size Comments
ACCA 56 sf Acorus calamus Sweet Flag ! gal, min. 3' o,c, ACCA 470 sf Acorus calamus , Sweet Flag I gal, min. 3 o.c. MRS 11 Ilex verticillata'Red Sprite' Red Sprite Winterben 3' ht. min. Full, Matched Specimen, B&B 4'o.c. Y 4'o.c. a_ a_ a_ n-
ALSU 453 sf Alisma subcordatum '"M ALSU 876sf Aiisma subcordatum Water Plantain I gal. min, 3' o,c, Water Plantain I a1, min. 3' o,c. VIDE 4 Viburnum dentatum Arrowwood Viburnum 4' ht min. Full, Matched Specimen, B&B, 8' o.c. g 3' O.C. w LU Ui W cncnc_nu_)
NYOD 1,496 sf N m haea odorata White W r i NYOD 467 sf Nymphaea odorata Y p ate L ly I gal. min. 3 o.c. White Water Lily I gal. min. T o.c, HERBACEOUS GROUND COVERS cn ~~j
POCO 728 sf P POLO 489 sf Pontaderia cordata ontadena cordata Pickerelweed I gaL min. 3 o,c, Symbol Code Qnty. Scientific Name Common Name Size Comments Pickerelweed i gal. min. 3 o.c. z
} TYPH 262 sf T ha s . Cattail YP PP i gal, min, 3 o.c. DECG 235sf Deschampsia caespitosa'Goldstaub' Golden Hair Grass 2 gal. min. Full, T o.c. O t~O 1 " c~ooo
• y' . PAVI 320sf Panicum virgatum Switch Grass 2 gal. min. Full, 4' o.c. q(-INO
VIMA 507sf Vinca major Large Periwinkle 18" o.c, ~ N000
a v z
0 a
00
TEMr WRARY BENCH MARK = F- 37 O g Q = w o
GRAPHIC SCALE IN FEET NAIL IN POWER F-%jLE Q O p °w ONO O~mm~N~ c
20 0 20 40 60 WEST OF COLVARD DRIVE J Q ~ J W 5
Lij U
0; w QW~=~
E SHEET C-3 FOR LOCATION _U C]~~VO'in CL Ln C)
L:110010031DWGS VILLAGER1CDS1WETLAND PLNT.dw 3/7/2 J
1 g, 007 9:03:19 AM, Iraberts, LandDesrgn? Inc.

Q
~ ~ ~ : ~ ~ j ti~
. ; t ti r1 { t ~ ~ 1 t , N
~ ~ . ~ Fhb i ' y= 1 ~ ~2..._ I r:::: 4:::;~. ~;f t... - - ~ ~ , ~ ~ ~ i ~ t co N
7:::. p<~ 1 t . iy;: c I
WETLAND #I SPILLWAY 50-YR EVENT l , , i ~ ~ Tk... ~.J i I r Zap
TOP OF DAM ELEV = 631.5 , .t _ P OF SPILLWAY ELEV 628.6 a~ ~ ' 1 i ~ ~ 'fl' ' ft M O cV f
, ~d, _ti- . ~ , ~ LENGTH OF WEIR = 20 1 , i w f ,,.~„M....,.. b3 t ~ r r -c rn
~ RIP RAP APRON AND SPILLWAY TO BE ~ V O
ARMORED WITH d50 = 6 TO ` ~ } _ F' S NE ~ t: j O E
i i 1 ~ ~ ~ ~ sj ~ APRON DIMENSION MIN. 10! X 20 W X I D ,i` ~fF;_ ~ ° 1 1 ~x ~ i f j ~ - _ ~ 1 if t~,. j L~ F L LL V
~ ;t ~ ~ ~ i 1 N
r.. t i " ~'-°E i f t _ ~ •,y` , _ :rt = O 0
. - i ~ amm
~ F F. '`F.F. ELEV. .ELEV. 7 • ~ ti ~ F. w . ELEV. F.F• ELEV. F.F. ELE 0
: _ i b~s.oa ~:63a.oo ~ , • F.F. ELEV. ~j a~ ! f 638.00 640.00 ~ f _ _ o m ~ 640.00 yr f N
art 642.00 o r 1 1T1 'J r
.t, ..~1. ~ '`R •'4 r ~ .,.r. i : ~i: 1
r • . ~f ~ f.t ~ I I
1 p.:°~ b 1 1 ~ ~ ~ b Sid
f J x;. F:£ ~ : ~ ~ ~r fit. . . 1 t ~ ,
j .-~-5-::~nh i n r ~ r i 3k t` - r... ~ - r
ALL 3:1 SLOPES ON OUTSIDE BERM OF - ~ ~r~ 6~1:Q0 _ ~ WETLANDS & BIORETENTION AREA ~ ~,~;4 ~ - - \ ' 5 4~ . v3i~f c \ •"T1 , ~ i / C1 ~ 1 r . n I = CORPORATE "
SHALL BE REINFORECED WITH NAG S650 ~ ° .~g~ r ~ f o r- N I
OR APPROVED E UAL ~-E ~ ~ __.l ~ a f } -V;~*..SEAL Nn't
m _ a , 'r. ` , . ,i ~ _ ~ 6?z.~o t~ . M ! , J r.,,`i>i t
t 1...... - fi : ~,..,.~„_t. i
I ~ W f 6' F'n ~~e s.
tT ~ \ A: 1 ~ f ~
' ~ 1 ~ j R,'-.3 \ 1 ~ ~ - N - t x "11 ~
~ ~ 622.50 f~:t t fit-. ~.3 ~ ~ n,~ t ~ v ~ i w
i : i ~ I Rj IC ! 00 ~ (T ~ ~ - m 630 ® r f N
~ ~6d 1.40) 'w. .,r i l L
b2325 ; } ~ 628 E` ~ 1 ~ ~ I j 1 0 21164 ° 03 1 8 ' ~r•••FNG INEE~.•~~~
~ 623,25 ! 'a `C . WETLAND #I OUTLET STRUCTURE , ; . s ~
3X3 BOX ,TOP ELEV - 627.5 , , ~ ~ f n 4 { ~a 6 ROUND ORIFICE°INV ELEV = 626.4 e b23,25~ ~ ~ ._.x._ .W......
2A WQ DEWATERING PIPE; ELEV = 624.0 ` x _ ..r.. , y_ y, :a-~.. w,1111 ~ ~/rtt?
sz~,2s X . POOL DEWATERING PIPE WITH ~ : r.::: 622.SQ y ; 6 3.25 _ ~..>3 ~ x ~ , ~
GATE VALVE & LIFE ROD°INV ELEV= 622.5 x s ~ 622.5Q , 1 ~ MICROPC? ~ 62250 F ~ w i
~ ~ ~ ~ ~:<-s t~. ti x 1 x t....:.a , 6 622,50 11 ! .p ~ _ /21.00 / ~
/ _ -:~9: ~ n 'd r t, _.~r w, ~ .ti ~ ~ 7
~ ® • ti ' 622.50 i ~ . r 10 W - _
i : .r.vu. b23.2S ~ - /l ~f
r A 1 -..r ' ~ ~ '=ivji'v]]~ d23~5 f ~ - ~ _
~ - ~ - ~ I ~ 623:?5 ~ r' "tom>z:~ . _ ~ , ~ f
psi 1.44 k _ '^sa~-::_:c } k.: T~;,_ ; f}>t is J~,,,. ~ b~ f ~ ~ f 3 C.: it ~ ~ ~-wti ~ t
® z-. t s f.- Buz, t~. <<,.~- f --....t ,.a«t4h .3 ~v:=i:= r.; x~ ~ ~ ~O REBAY
ate' t < ~ ~5;,~3~;a;~ $ 21.00 ~ , ~ ' } = u ~ e~ l f
\ ~ i _ i. G ..v r t
~ r / ALL 3.I SLOPES 0 N OUTSIDE BERM OF "~+Kyj3 ~ it ~ ~ - ~ , s~. ~ < ~ ~
: ~ ,5 ` WETLANDS & BIORETENTIO ,a s AREAS ` N ::.v.. 6 ~
, g~ ~ ; SHALL BE REINFORECED WITH NAG S150 - ~"~2r ; F.~ ~ 9 3 ,3:::::::::,
OR APPROVED E UAL Try - ,,y,,~ g 9 4,~. ~ j
' : _ ,r' Cam,.; % v Ile
i a a ! : ci: : ,1 i~a t p ! f: of=-
~:..t. ' ~ ~ ` ETLAND #2 NUTLET STRUCTURE r.. .::v. -3'X3' BOX ;TOP ELEV = 625.3 t i. . :.,x j ~
- , I , " 6" ROUND ORIFICE° 1NV ELEV = 624.75 _ t:ti i w i - , f
gym= ~ W DEWATERING PIP ° - Q E, ELEV 624.0 ' f , sm
~ ` 6" PERM. PO p - - . OL DEWATERING PIPE WITH ; f ~ ~ - fr _ -
~ i `i GATE VALVE & LIFE ROD; INV ELEV= 622.5 - { .,~,.x ra t J r 1 fr
t i~~ ~ T O ~ . .m..,,. L_: E=`: ~ ~ ~ ~ - 0 ~ ~ y~ HARD EDGE LEVEL SPRE
~r>~v . ( f ~ - ELEV - , 6zss . _ LEVEL SPREADER
E' . v T 60 - i 2 RCP AT I.00~ SLOPE WITH FES ~ " ' i ~ ~ : . f LENGTH - 70 LF .7 0 LF Z
, L X 12 W X I D RIP RAP APRON t • ~ ~v?= ~ ;t ¢ s. a -
#:[i (SEE DETAIL} ~w , i f ~ y,; r''. z f
~ ! 7 f" i ~ ~-z} 1 ~ .s i3 .;rte w . 1 -.::.g t ~ f ~ i/ 1 m r
: , : ~Ji , ' F rr.: : ~ S c::t.:t l F; eft _ r a ) 1 f~::z r Yr=.... ~ J m :..tom C) V
n:na I II ~ ' ti.'~ 5 b0 - 12 RCP AT I.00% SL OPE WITH FES; - I . : y..• ~ r ~3 Z
~ ` ' , 20'L X i 2'W X I `D RIP RAP APRON a~; ~M ~v: ~ it J.~ r ~ V . 4 ~ r r ~ ~i
<<T~ SEE DETAIL J ~4: ,,:.n,,., t i ..F:_ ~e l~~ ~..:F: r i UNDERDRAIN SYSTE F R 1 _ . -
4~ E .+`j ~ : t / f. .3 N ~f` BIORETENTIO t~ ' .:3:..:~ .
k l I 1 i ~T~Q . . f ~ - ::.i- - SEE DETAlL ON C-17b ~~N~; - , f - , ,Ty
. ~ , ..r. C f m.~.. r~
~ , f ~ ~ W . m f~. ~ r - - ~ n.... C
- ~ = I , / k - e . ~ ; , . r~,:=~ o ®m i
1 s t . _ ~ WETLA .:f...... - ~ ND #2 SPILLWAY 50-YR EV ~ / ~a l • V ,Y 50-YR EVENT - /
, : TOP OF DAM ELEV = 628.0 , ALL 3:1 SLOPES ON OUTSIDE BERM OF C .8.0 ~ -
/ ~ -r~ TOP 0 F SPILLWAY ELEV = 625.5 ~ WETLANDS & BIORETENTION AREAS , ~ / C, = 6z5,5 CLIAI I DC D[It?len7fP/~Pn temri ~ u... n~
LENGTH OF WEIR = 10' ncivrvn«.cv YYI I A IV/1U 'j IJU
/ i - **RIP RAP APRON AND SPILLWAY r b OR APPROVED EQUAL 'SPILLWAY TO BE
1 ~ ~ t ~ J << ARMORED WITH d50 = 6" STONE ..0 c = 6" STONE •
APRON DIMENSION MIN. 101 X 20 N. 101 X 20'W X I'D A cp tc3 cri w
Q
MAINTENANCE REQUIREMENTS ss U
M
1. WETLAND WILL NEED TO BE CLEANED OUT WHEN SIX (6) EXTENDED DETENTION WETLANDol EXTEND
INCHES OF DEPOSITION HAVE ACCUMULATED. 'ENDED DETENTION WETLAND #21 B#1
2. SEDIMENT REMOVAL MAY BE ACCOMPLISHED WITH A PoRrnBie MncMNe SUCH as A MuDcnr OR aacxHOe. PERMANENT POOL REQUIREMENTS (EXTENDED DETENTION WETLAND #1)• PERMANENT P, ~ ~ W W W tZt! z
THE TOP FEW INCHES OF SEDIMENT SHOULD BE STOCKPILED
SO THAT IT CAN BE RESPREAD OVER THE SURFACE OF THE ANENT POOL REQUIREMENTS (EXTENDED DETENTION WETLAND #2): REQUIREMENTS (BIORETENTION #1): e s z~ <008-
WETLAND AFTER SEDIMENT REMOVAL. UQ¢Qu
REQUIRED PROVIDED -rv
3. REMOVE TWICE (2) ANNUALLY DEBRIS THAT HAS REQUIRED PROVIDED 8000§p
COLLECTED IN THE WETLAND. SURFACE 'AREA: 81530 SF 8,856 SF SURFACE 4. INSPECT THE WETLAND ANNUALLY AFTER A RAIN EVENT REQUIRED PROVIDED C- c~ntt-n- b; W QQ
SURFACE AREA: 11790 SF 41867 SF SURFACE AREA: 769 SF 1,527.81 SF (.9 6 U
TO INSURE THAT THE FACILITY IS OPERATING AS DESIGNED. HIGH MARSH PLANTS: 21985 SF 31126 SF HIGH MAF cxf w w w a: WCL CL CL w CL (100 CL
iIGH MARSH PLANTS: 626 SF 11763 SF wLncncnW
5. THE FOLLOWING ITEMS SHOULD BE INCLUDED IN THE LOW MARSH PLANTS: 2,985 SF 31049 SF LOW MA INSPECTION:
OW MARSH PLANTS: 626 SF 1,628 SF E0: L>U
CLOGGING OF THE OUTLET OR TOO RAPID A RELEASE, MICROPOOL: 1,280 SF 11340 SF MICROPO( O in 00000
EROSION ON THE BANKS, AICROPOOL: 268 SF 740 SF ~ ~``'-r~~ ~d
EROSION AT THE INLET AND OUTLET,
SEDIMENT ACCUMULATION AND THE NEED FOR REMOVAL,
CONDITION OF THE EMERGENCY SPILLWAY, AND VOLUME REQUIREMENTS (PROVIDED) VOLUME RE( LUME REQUIREMENTS (PROVIDED)
WOODY VEGETATION IN THE EMBANKMENT.
PERMANENT POOL VOLUME: 14,961 CF PERMAN GRAPHIC SCALE IN FEET TEMPORARY POOL VOLUME: 19,051 CF TEMPOR PERMANENT POOL VOLUME: 8,92 CF TEMPORARY BENCH MARK 00
CL g 0 CL
zo 0 20 ao so NAIL IN POWER POLE 0 o `n -m Ln CD o0 >r r14
TEMPORARY POOL VOLUME: 5146 CF WEST OF COLVARD DRIVE
FOREBAY VOLUME (20% OF P.P.): 2,992 CF FOREBAN a,ZZLU wU Um~
FOREBAY VOLUME (20% OF P.P.): 1,638 CF ELEV. 659.89 W (j 6 o QO~T
SEE SHEET C-3 FOR LOCATION OQQUa(ncL
L:\1001003\DWGS\VILLAGED\CDS\VD-DEfENTtON.dwg, 3/7/2007 9:08:22 AM, jroberts, LandDesign, Inc.

CLASS B CONCRETE
TO BE USED
UTILITY BRICK Q BRICK
r TIC}N AND MAINTENANCE ®PERA
MIrL ~ SIEEDBED PREPARATION NOTES N r O
Vf ISi"M1/1f A~ I.LIR~1„/ 7.TI IfI ~ NR~ 1 Q,AS$ l/f4 MEDUW T 0 EVERY MONTH TO INCLUDE THE FOLLOWING: INSPEC I N 0 N
TQ ~ BY T~ ~ ATER CONTROL MEASURES TO BE INSTALLED ACCORDING TO 1. SURFACE W CLEAR THE ORIFICE OF ANY .OBSTRUCTIONS: r 1. CHECK AND CORDING TO ETLAND SIDE SLOPES REMOVE TRASH AND REPAIR ERODED AREAS BEFORE THE NEXT 2. CHECK THEW 3' V Z
PLAN.' COMPLETE GRADING BEFORE PREPARING SEEDBED. 2 RPRAP SHOUTA EXTEND UP BOTH SDES OF Tl"E APRON AND AROUA® TFE END RAINFALL EVENT. AVAILABLE clq
OF THE PpE OR CULVERT AT THE DLSQiARGE OUTLET AT A MA7QMUM SLOPE OF 2. AREAS TO BE SEEDED SHALL BE RIPPED AND SPREAD WITH AVAILABLE x1 AND A HEKi~tf NOT LESS THAN TWO TFBtDS THE PpE DWutEl~t OR TOPSOIL 3" DEEP ON SLOPES 2:1 OR FLATTER: TOTAL SEEDBED LED INSPECTION EVERY 3 MONTHS TO INCLUDE THE. FOLLOWING: M j O C4
CULVERT HBGHi: DEPTH SHALL BE 4" TO 6" DEEP. IF SOILS ARE PREPARED MPACTED DURING GRADING LOOSEN TO A DEPTH OF 6" TO 8". A I PIPING .GRASSED SWALES) FOR 12" RCP 1. 1NSPEGT THE COLLEGTfON SYSTEM (LE. CATCH B S NS, , n ' TO 8 . PROPER FUNCTIONING. CLEAR ACCUMULATED TRASH FROM BASW GRATES AND BASIN ' M (WATERTIGHT) IT) en f
THE END of THE APRON TO THE CO 3 THERE SHALL BE NO OVERROW PROM 005 ROCKS R40TS AND OTHER OBSTRUCTIONS SHALL BE REMOVED SURFACJ: OF THE RECEIUNG CIiAMEt. THE AREA TO BE PAVED OR WRAPPED 3. L E , 3E REMOVED BOTTOMS, AND CHECK PIPWG FOR OBSTRUCTIONS. Vo
3 BE UNDBtt~T SO THAT Tlf NVERT OF TtiE APRON SHAD. BE AT THE FROM THE ,SURFACE TO PREVENT INTERFERENCE WITH ESTABLISHMENT SHALL SAME QWDE Q~USH) WICH THE SURFACE OF THE R1rCHVNG CNAi~~B,. TIC AND MAINTENANCE OF VEGETATION. ~USHMENT R BROKEN PIPES. 7.0" DIA. WQ 2. CHECK WETLAND INLET PIPES FOR UNDERCUTTING, REPLACE RIPRAP, AND REPAI
APRON SHALL HAVE A CUTOFF OR TOE WALL AT THE DOWTJSTRFAM EN3. 4. APPLY LIME ACCORDING TO SOIL TEST RECOMMENDATIONS. SOILS - ED AREAS IMMEDIATELY. RELEASE SOILS 3. RESEED GRASS SWALES TWICE A YEAR AS NECESSARY. REPAIR EROD t% N o
. WITH H HIGHER THAN 6 NEED NOT BE LIMED. 1F HIS NOT END OF THE APRON SHALL BE EQUAL TO THE ItiOTTOM p ~ ~ VYDTH ~ ~ KNOWN, APPLY LIME ACCORDING. TO SEEDING SPEC~ICATIONS BELOW. ?T S ON EVERY 6 MONTHS TO INCLUDE THE FOLLOWING: IN PECTI NS BELOW. 1. CHECK SEDIMENT DEPOSITION DEPTH AT VARIOUS POINTS IN THE WETLANDS. IF DEPTH IS 6" OR
. WDTH OF .THE RECElVN(i CFIAt'~PIfI. ~ TAPER TO RI:CBVlVG CHAN!~. SrI INTO TOP 4" TO 6" OF SOIL. APPLY LIMESTONE AND INCORPORATE OF SOIL. GREATER, SEDIMENT SHALL BE REMOVED AND WETLAND SHALL BE RESTORED TO ORIGINAL DESIGN t CD 0
S, ALL SUBf~tADE FOR STRUCTURE TO BE COMPACfH) TO 4596 OR GREATER. 5, APPLY FERTILIZER ACCORDING TO SOIL TEST RECOMMENDATIONS, lF NO 5011 TEST HAS BEEN PERFORMED, APPLY FERTILIZER ACCORDING TIONS, lF ORDING DEPTH. Ue M ~ t e4' J { i
~ S. 'trE PLACING OF FLL; ElII~Bt LOOSE OR COMPACTS? N THE RE(~VNG TO SEEDING SPECIFICATIONS BELOW. PLAN SHALL NOT BE ALLOWED. CHANNEL ~ 6. ROUGHEN SEEDBED SURFACE PRIOR TO APPLICATION. GROOVE OR 2: OWNER IS RESPONSIBLE FOR PROVIDING A PUMP TO DRAIN THE POND AND FOREBAYS FOR ROUTINE z
B VES N THE HORIZONTAL ALIGNMENT (;J: APRON W!1 FURROW SLOPES STEEPER THAN 3:1. MAI NANCE AND CLEAN OUTS fF NEEDED. . OVE OR NTE ANTIFLOATATION BLOCK TO . 0 ER IS RESPONSIBLE FOR TREATING THE POND WITH POLYACRYLAMIDE PER MANUFACTURER 3 WN BE 4'x4'x1.1' CONCRETE PAD D
7. NO BEPDS OR CUR BE PEttMii'ItT). 7. FOR TEMPORARY SEEDING OF AREAS WHICH WILL NOT BE BROUGHT TO L BROUGHT TO ATIONS AND CONTACTING THE ~ CITY OF CHARLOTTE EROSION CONTROL OFFICE PRIOR TO SPECIFIC (SEE CALCULATIONS) E
FINAL GRADE FOR MORE THAN 15 WORKING DAYS, FOLLOW THE I~ ~ TEMPORARY SEEDING SPECIFICATIONS BELOW. V THE THE POND FOR ROUTNE MAINTENANCE AND CLEANOUTS. DRAINWG
A RAINFALL EVENT INSPECT STORMWATER WETLANDS TO ENSURE THAT THE BASIN 15 4. AFTER 4, OPERATING AS DESIGNED.
W NATLiRAI. QtADE D SIDE SLOPES AND REMOVE ANY WOODED VEGETATION. 5. INSPECT WETLAN \,•````Tj SIG
III COAT INSIDE & OUTSIDE MAINTENANCE AS REQUIRED: OF BRICK RISER WITH TYPE
I _ PS - PERMANENT .SEEDING SPECIFICATIONS 111= 1. MOW THE SIDE SLOPES ACCORDING TO THE SEASON. MAXIMUM GRASS HE{GHT WILL BE 6". " " W ER PROOF CEMENT S AT
RP RAP = I J LOW MAINTENANCE AREAS H III 11- 2. THE ORIFICE iS DESIGNED TO DRAW 1a0WN THE POND W 4-6 DAYS. IF DRAWDOWN IS NOT SOURCE OF THE CLOGGING ~ ACCOMPLISHED IN THAT 11ME, THE SYSTEM. MAY BE CLOGGED. THE / CORPORATE
l) STRUCTURE O-FLOW IAME~ER Of OUItET APRON APRON APRON STON£ STEEP. SLOPES OR STONY, SHALLOW OR DRY SOILS (CFS) PIPE VELOGIY LEN61H WfD7H THICKNESS CLASS ' BE FOUND AND ELIMINATED. MUST SEAL
{~N.) (FPS) (~N) DATES TYPE RATE ORDER. _ / RATE 3. ALL COMPONENTS OF THE STORMWATER WETLAND SYSTEM MUST BE KEPT !N GOOD WORKING - 53 TOP OF WEIR 62 .
" 2 AUG. 25 -SEPT. 15 T>~=ALL FESCUE 100 LB/A( WET.1 9.33 1 4.54 20 12 12 4. ALL NOXIOUS OR INVASNE PLANTS, SUC~-I. A5 CATTAIL, SHALL BE REMOVED TO AVOID 100 LB/ACRE
FEB: 15 -MAR. 21 SERICEA LESPEDEZA 30 LB/A( 4s #5 WASI~ STONE 12" 2 KOBE LESPEDEZA 10 LB AC WET.2 1.16 1 4.45 20 12 / 30 LB/ACRE MONOPOLIZATION AND CREATION OF MONO-CUL?LIRE SYSTEM." 10 LB ACRE / ~ 6„ DIA: ORIFICE
LAYER OF H.TER FABRIC GENTLE SLOPES, AVERAGE SOILS 0
NOTE; MO'+1kiUM H¦2/3 PpE ~ DATES TYPE RATE 624.75 RATE 1011111
SECTION B-~ AUG. 25 -SEPT. 15 TALL FESCUE 80 LB/At 80 LB/ACRE
FEB. 15 -MAR. 21 SERICEA LESPEDEZA 20 LB/A( 20 LB/ACRE 1.0" DIA. W Q
KOBE LESPEDEZA 10 LB A( / HIGH MAINTENANCE AREAS 10 LB ACRE ~ RELEASE / 624.0 ° ~ Q K7 I
GENTLE SLOPES SOILS WITH AVERAGE OR BETTER MOISTURE, C( AT I AM RESPONSIBLE ERMANENT b23.25 GATE VALVE , I ACKNOWLEDGE AND AGREE BY MY SIGNATURE BELOW TH P MOISTURE, CQOL SITES I AND LIFT A 09 Q ~ AL
DATES TYPE RATE FOR THE PERFORMANCE OF THE MAINTENANCE PROCEDURES LISTED ABOVE. I POOL i GROUT WATER RATE AGREE TO NOTIFY DW OF ANY PROBLEMS WITH THE SYSTEM OR PRIOR TO ANY ROD Q TIGHT - 21164 ATER 9 @3
AUG. 25 = .SEPT. 15 BLEND OF TWO .TURF-TYPE 200 - E S STEM OR RESPONSIBLE PARTY. POND BOTTOM = 622.5 'E zoo - 250 LB ACRE CHANGES TO TH Y _ / ~
TALL FESCUES (90%) AND ~ r i- i N
TWO OR MORE KENTUCKY TOP OF DAM ELEV. WEIR ELEV. BLUEGRASS VARIETIES (10%) ~i _ i2" RCP 6 FLG x PE WALL 1i i 1NV OUT '11,1,111110 's,
GENTLE SLOPES, DRIER SOILS, PHYSICAL LIMITATIONS WETLAND #1 631.50 628.60. PIPE -GROUT - (WATERTIGHT) NS I i ~,a:.~~, ~ . . . . . 620.1 - WATER TI HT
DATES TYPE RATE LAND #2 628.00. 625.50 WET RATE i
AUG. 25 -SEPT. 15 BLEND OF 50% KY-31 TALL 200 - , : ~ T 200 - 250 L8 ACRE " ALL / r„ , t ~ ~ . b20.1
FESCUE AND 50% MIXTURE OF TWO OR MORE TURF TYPE ' ~ t.. TYPE ; ~ ~ , . ~ ~ • , R
TALL FESCUES TOP OF DAM. TOP OF DAM , WEIR VARIES j i ~ N S••••
a.,n,~,.,uN„~,..~.,.,~_~.~,.,.,.„~.o_.w.,.m.-M..,~_w._....... e ~ GRASS-LINED CHANNELS, 'AVERAGE S IL ~ SEE PLAN , R ~
DATES TYPE RATE i 3 err®®~ ATE T I ~ i~ i ANTIFLOATATION BLOCK TO _ K TO PAD
\ / / / / ~°°~°°°'°°'.~I I ~ ~ I ~ E ~ AUG. 25, - OCT. TALL FESCUE 200 L \ \ \ \ \ ~ I 1 ~ GRASS-LINED CHANNELS, 1~RY SOILS /i,//,~// ~ 1 ~ 3' TYP. B ACRE oR 1'-0" BE 4'x4'x1.1' CONCRETE PAD zoo L / : . ~ ~ 4 - 5 LB/1000 SF _ , ; ~ 'r-,.~;.; - , : , A : ~ ~ (SEE CALCULATIONS)
! ® L.-, i DATES TYPE RATE RATE
\ i \ I. Y PlLLWAY ( ® - MUDA GRASS - , EMERGENC S APRIL 15 JUNE 30 COMMON BER 40 r,.: S 40 - 80 LB/ACRE OR
r~//\/ ~r~~® 1 - 2 LB/1000 SF l f . ..~.r 1 . , _ . ~ ~ ~ . ' ..1 ~ . .e..
AMENDMENTS SHALL BE APPLIED AT THE RATE OF 4000 LB/ACRE OF GI 3/ACRE OF GROUND ~ . ~ . ~ N.T.S. I I ER. ~ , r,, 0 FERT L Z
AGRICULTURALLIMESTONE AND i000 LB/ACRE OF 10-10-10 FERTILIZER. DRY SOIL, GRASS-LINED CHANNELS SHALL USE 3000 L8/ACRE OF GROU CRE OF GROUND ~ ~ t . : ' ' i'..' , ."Jz:. $+;,t.hil,lt<, ~...~.,.l,a t .l t.: ,:l:. 1~,..I3t~S~3~:~.i;~t;~. lt;`11;.f~`.tl..f'._- i`. I'::,., ;'°y~ i~:~ ,.i r'~'; :~a , 'ETE
,.._.:_PERMANENT EROSION AGRICULTURAL LIMESTONE AND 500 LB/ACRE OF 10-10-10 FERTILIZER, MULCH SHALL BE APPLIED AT THE RATE OF 4000 LB/ACRE OF STRAW. )FERTILIZER. ~ _ CLASS B CONCRETE of STRAW. ~ TO BE USm
CONTROL MATTWG STRAW SHALL BE ANCHORED 8Y, TACKING WITH ASPHALT. NETTING OR I ANCHORING TOOL. JUTE OR EXCELSIOR MATTING SHALL BE USED IN GR, NETTING OR MULCH USED IN GRASS UTp.CI i , UTILITY BRICK
LINED CHANNELS TO CALCULATED HIGH .WATER DEPTH. I
!
N.T.S.
F LNG SPECIFlCATIJNS S TEMPORARY S~ED 3'
DATES TYPE RATE AMEP AMENDMENTS
a JAN. 1 -MAY 1 RYE GRAIN)y 120 LB/ACRE ( CRE
FEB. 15 -MAR. 21 ANNUAL LESPEDEZA 50 LB/ACRE AGRI CRE AGRICULTURAL LIME- ! 12" RCP STONE AND 750 LB cn 12" RCP (WATERTIGHT)
OR LOBE STOP ACRE FER1 / ~t (WATERY ACRE OF 10-10-10 FERTILIZER
DATES TYPE RATE AMEi ii;;;:~; i :m; ::,ir~r~ _ ~ 2.0" DIA. W AMENDMENTS RELEASE
CRE AL N®TES
MAY 1 -AUG. 15 GERMAN .MILLET 40 LB/ACRE AGRI GENER . AGRICULTURAL LIME-
' STOP ACRE STONE AND 750 LB/ ACRE 4F 10-10-10
FER1 FERTILIZER 1. HOMEOWNER'S ASSOCIATION SHALL BE RESPONSIBLE FOR ROUTINE OPERATION AND MAINTENANCE. NKS AS SOON AS GRADING OPERATIONS
DATES TYPE RATE AMEI 2. CONTRACTOR SHALL ESTABLISH GRASS ALONG THE WETLAND BA AMENDMENTS F R SEEDING SCHEDULE, DICTATE. SEE PERMANENT SEEDING SPECIFICATIONS 0 W
AUG. 15 -DEC. 30 RYE (GRAIN) 120 LB/ACRE Dl ATE ITH THE OWNER AND THE OWNER`S LANDSCAPE ARCHITECT ANTIFLOATA110N BLOCk CRE 3. CONTRACTOR SHALL COOK N W ATION BLOCK TO CONCRETE PAD
AGRI ST01 AGRICULTURAL LIME- A ATI PLANTS BE 4'x4'x1.6` CONCRETE I FOR THE SELECTION OF PERMANENT QU C STONE AND 1000 LB/ (SEE CALCULATIONS) )LATION5)
ACRI FERT ACRE OF 10-10-10 4. THE GOVERNMENT OFFICE HAVWG JURISDICTION FOR WATERSHED PROTECTION AND THEIR ERTIUZER ND FOR {NSPECTIONS AND F ASSIGNS SHALL HAVE RIGHT OF ACCESS TO THE PERMANENT PO
4' MAINTENANCE ENFORCEMENT.
MULCH SHALL BE APPLIED AT THE. RATE OF 4000 LB/ACRE STRAW. STRAW SHALL BE .ANCHORED BY TACKING WITH ASPHALT. NETTING OR E STRAW. NETTING OR MULCH
ANCHORING TOOL. COAT INSIDE & OUTSIDE OF BRICK RISER WITH TYPE
GRADED SLOPES AND FILLS -THE ANGLE FOR GRADED SLOPES AND FII OPES AND FILLS "5" WATER PROOF CEMENT
SHALL BE NO GREATER .THAN THE ANGLE WHICH CAN BE RETAINED BY VEGETAl1VE COVER OR OTHER ADEQUATE EROSION CONTROL DEVICES OF DETAINED BY iL DEVICES OR ~ • ar
STRUCTURES. IN ANY EVENT, SLOPES LEFT EXPOSED SHALL, WITHIN 15 WORKING DAYS OF COMPLETION OF ANY PHASE OF GRADING BE PLANTS LL WITHIN 15 IG BE PLANTED OR
OTHERWISE PROWIDED Wi11~ GROUND COVER, OEVECES OR STRUCTURES / TRUCTURES ~ TOP OF WEIR .627.5
SUFFICIENT TO RESTRAIN EROSION. W CC3 f V
ND COVER -WHENEVER LAND DISTURBING ACTIVITY IS UNDERTAKE GROU S UNDERTAKEN ON ~ „
A TRACT COMPRISING MORE THAN ONE ACRE, IF MORE THAN ONE CONTIGUOUS ACRE IS UNCOVERED A GROUND COVER SUFFICIENT TO AN oNE ~ I 6 DIA. ORIFICE ICIENT TO . ~
RESTRAIN EROSION MUST BE PLANTED OR OTHERWISE PROVIDE WITHIN 1 VIDE WITHIN 15 b~d•w
WORKING DAYS ON THAT PORTION 'OF THE TRACT UPON WHICH FURTHEF ACTIVE CONSTRUCTION IS NOT BEING UNDERTAKEN, PROVIDED THAT THI SHALL NOT APPLY TO CLEARED LAND FORMING THE BASIN OF A RESER' HICH FURTHER iED THAT THIS -
LATER TO BE INUNDATED. OF ARESERVOIR 2.W DIA. WQ
624A RELEASE WETLAND #1 WETLAND #2 ~ W ~
PERMANENT 623.25 GATE VALVE tt3 ~ ~ Q
POOL ' AND LET cGROUT GROUT WATER
TIGHT TOP OF OVERFLOW POND BOTTOM'- 622.5 TIGHT
OVERFLOW (BROADCRESTED) WEIR TO PASS WEIR ELEVATION 628.6 625.5 - i ~
THE 50-YR STORM (SEE PLAN VIEW FOR 6" FL x PE 12" RCP 2" RCP !u'- ~ ~-WATERTIGHT) Z Z Z
PE cGROUWALL i i INV OUT. (WATERTIGHT) / DETAIL PI TOP OF DAM 631.5 628.0 WATER TIGHT 622.0
ELEVATION www
15% OF TOTAL 70Y OF TOTAL 759, OF TOTAL ZZZZ =000
SURFACE AREA SURFACE AREA SURFACE AREA (FOREBAI) (MARSH) (MICROPOOL) STABILZE FILL BERM W/ PERMANENT MATTING 622.0 S150 PER NORTH AMERICAN GREEN PERMANENT POOL
ESTABLISH GRASS PER SEEDING ORIFICE INVERT ELEVATION 624.0 624A UQ_QQ_ ZZZZ
20% OF TOTAL VOLUME SPECIFICATIONS N ^ goon
(FOREBAY) 3596 OF TOTAL 35% OF TOTAL 19.2 "AT10N BLOCK TO w Q Q Q
SURFACE AREA SURFACE AREA (9" TO 18" DEEP) (0° l0 9" DEEP) TOP OF OVERFLOW WEIR ORIFICE DIAMETER 1.5 0.75° nr~r~~onrAnoN eioc BE 4'x4'x1.6' CONCRETE V CONCRETE PAD 1=
IMP Z 3 (SEE CALCULATIONS) JLATIONS) cl~ www wa.CL CL
PROVIDE A 5'x3'x6° RIP.-RAP WETLAND ~r~n ~ APRON AT ALL PVC ORIF/CE HIGH MARSH 623.25 623.25 OV 1 t,.~ T STRUCTURE 0Ono
STORM BERM/OVERFLOW r TORE Wun (n tn
DRAINAGE WEIR COMPACTED TO 95% STANDARD OUTLETS. ELEVATION N.T.S. N ~ 2u u
PIPE PROCTOR PERMANENT POOL / ORIFICE INVERT 0~
LOW MARSH 622.5 622.5 ELEVATION N 0000. 00 Q4
d-
~ HIGH MARSH
LOW MARSH BOTTOM FOREBAY / 621.0 621.0
MICROPOOL
X, /xx BOTTOM FOREBAY / MlCROPOOL ELEVATION 00
o mm r o Lr)
RIP-RAP APRON o -
(GRADE FLAT) N°
LIJ
STORMWATE.R WETLANDS TYPICAL CROSS-SECTION ~0U w
Qui I -F C~ 0 0 U CY cn ~ cr}
N.T.S.

G
N
i t O N
~ , ~ - ~ r . _ : s sr® r.- sr~~ ' N
rr~ Y ~ ~ ~ ~ i , ~ Z %0
~ _J. - , ~ - - - - - -j-r - -T t W~.. i
a i , j i i ~ ~ ; ; G ~ i 4~ M oN
I WETLAND #I SPILLWAY (50-YR EVENT) ~s~ / r I , \5 ~ ; I .m I i i , ~ i M
j -TOP OF DAM ELEV = 631 S ~ I W 1 ~ ~ ..,.u....~ ~ m t Ca U^
TOP OF SPILLWAY ELEV = 628.6 r om f i ,i . I i ~ E V- U L
LENGTH OF WEIR = 20' / ,%t ` ~ i j ~ j + , i ; ! . to N b0
**RIP RAP APRON AND SPILLWAY TO BE k f ~ . M tli
ARMORED WITH d50 = 6" STONE ~ . ~ BL APRON DIMENSION-MIN. 10'L X 20'W X I'D j' ~f~ 'r ~ I ..,E }i t M ®s ~ M C
• I w z~
I ~ ~ ~ _ ~ 46 47 ~ ray _ _ ~1 ~h!
/ I ! , t..= ~ :r . ®n, q~ F .ELEV. ' ` ` F.F. ELEV. , r !NV , i
. _ ~ I ~ - - ~ a~: F.F. ELEV. F.F. ELEV. F.F. ' ~ _ ; ~ ! / ~ / ~ 638.00 638.00 6 ~1 - l ' / F.F. ELEV. F.F. ELEV. , ~ Q r
b40.00 642.00 638.00 640.00 . , t ~ ~ ?
, r" I .
t 1 < 1 ~ _
\ ~ t f . t . ~ '
6~ ~ ! = t t J' 00 . ~ ..ti ,
' ~ \ ' ..s i ,i' Ve • CORPORATE
1 e~ 1 t - ~ t V~ ~ ~ - ~ . m _ , SEAL
ALL 3:1 SLOPES ON OUTSIDE BERM OF ~ t (621:00} ~ ` ~ - mm„ ' WETLANDS & BIORETENTION AREAS ~ I ~h~ ~ _ - - o N I. , . _ _ e~
i . _J ~ ~ _ ~ •
SHALL BE REINFORECED WITH NAG SI50 ~ ~ ~ \ _l - ~ - ~ ...i i ~ . . J
ORAPPROVED E UAL y "qs / ~ I - - - - - - - - - - -1 - - 1 ,^d^/. cP 62350 1 1
/ ; •y3.0~J fi . D62915 ~ j
r ; ,
i ~ _'7 ~1 r a~
f ~ I ~ ~ V~ t t t . ~ , .
- ~ ~ ' 63 .,r ~ ` - ~ , AL. - 21164
_ I l l ~ ~ I ~i / MICROPOOL i
618 ' , ; 4~
6
, ~ 6R3 WETLAND #f OUTLET STRUCTURE i4' I ~ ' (621 AO) I I ' ' bza > 1 ~
3'X3' BOX ,TOP ELEV 627.5 - ~ / ' 6" ROUND ORIFICE; INV ELEV = 626.4 ' 1 I J , ~ I ~ ~
, .n _ 622. ~ x 6 W •n is
2.0" WQ DEWATERING PIPE; E~EV = 624.0 ~ ~ ~jf t ~ <62250 ~ ~ ~ ' ~ , s;
6" PERM. POOL DEWATERING PIPE WITH ` ~ ~ ~ / ~ ~ - o r- ,p ,,v va,~„ t , r, , ~
GATE VALVE & LIFE ROD; INV ELEV= 622.5 exais ~ \ \ x y ~~r
1 ~ ~~,o \~es \ \ fiM15 ~ I I ? ; W w , 62 i .OQ) ~ t
- = ~ .
;
titii~~ ~ Plc/ ~ ~ \ 4 \ ~ \ / ai. F ; ~ ,
~ / i` ~ ? J NOV 2006
1 POREBAY - r.: Y FOREB
/ ~j ~ _ - r ; (621,00) , ~ - ®EtNR - WATER QUALITY ftTW= AND ST ATER PZANC
'N O \ ~ ~ i ~ ~ , . , - .
/ ~ \ ~ \ ` ~ . ( . 1 ~ . , ~ V' 1
~ 1~ ~ t ~ - ALL 3 I SLOPES ON OUTSIDE BERM OF i~ ~ ~6 , , 9,~ . ~ -
/ / ~ WETLANDS & BIORETENTION AREAS =E . ~ f r r } i ;
~ SHALL BE REINFORECED WITH NAG SI50 =~r~ c t 5 9 ~ a . ~ r 9 g ~ t ~ , d. ~
, \ J r -==Y ~ R l- OR APPROVED E UAL . , ~ .`e I B 9 _ _ ,
/ d ~ i / r ,....t., f C, ~ _
•+4 1 „ - _ a 'ti ji WETLAND #2 OUTLET STRUCTURE r ~f'
_ , ' A j 3'X3' BOX ;TOP ELEV = 625.3 t ' t ~ '
6" ROUND ORIFICE; INV ELEV = 624.75 ; ~ ~
• ' ~ ' f ~ I.0" WQ DEWATERING PIPE. ELEV = 624.0 i _ ~ i ~a r:
i 6" PERM. POOL DEWATERING PIPE WITH D ~ \ ~ ~ ` GATE VALVE & LIFE ROD; INV ELEV= 6225 ~ . t . # ~ ' , i
' ` HARD EDGE LEVEL SPREA[ ; ~ 0 :E , 0 ~ ~ ELEV = 628.5 YEL SPREADER z
0 j LENGT ' H-70LF .F
, ; , . ~ _ 0 -
60' - 12" RCP AT I.00% SLOPE WITH FES; \ ' ~ _ - 20'L X 12'W X I'D RIP RAP APRON i \ ~ ~ ~ p~ -n 0 _ , r ~ ~ '
i i z i ~ , i m ~ I... r -
(SEE DETAIL) \ i • , o _ ~ m 0
. i _ '0
S• - ~ ~ 60' 12 RCP AT 100% StOPf WITH F f _ , r r r
~ \ i ~ , 20'L X 12'W X I'D RIP. RAP APRON E ~ ~ f (SEE DETAIL) UNDERDRAIN SYSTEM FOR ,
~Y . r (A Jr- G-
t \ ~ _ , % / . (SEE DETAi~- ON G 17b) , , '
. ~1 0
f cn m
o om / , ~ ~
~ ~ \ \ eC G
" 1, •S'~P~ S•v ' • ~ WETLAND #2 SPILLWAY (50-YR EVE x'~' ' TOP OF DAM ELEV = 629.0 ALL 3:I SLOPES ON OUTSIDE BERM OF / ~ 50-YR EVENT WETLANDS & BIOI~ETENTION AREA ~
0 ~ (~1 ~ SHALL BE REINFORECED VYITH NAG S150 ~ , cy
TOP OF SPILLWAY tLtV = 6Lb.b OR APPROVED EQUAL PILLWAY TO BE ~cp (n
LENGTH OF WEIR 10'
~-4 **RIP RAP APRON AND SPILLWAY T( 401 Cd
ARMORED WITH d50 = 6" STONE APRON DIMENSION MIN. 101 X 20'V 6" STONE 101 X 20'W X I'D
U
MAINTENANCE REQUIREMENTS
L~U0
1. WETLAND WILL NEED TO BE CLEANED OUT WHEN SIX (6) EXTENDED DETENTION WETLAND 114" IA EXTEND INCHES OF DEPOSITION HAVE ACCUMULATED. ENDED DETENTION WETLAND #2 BNORETENTION #1 zzz U-i ui u,
L'i
2. SEDIMENT REMOVAL MAY BE ACCOMPLISHED WITH A =ooo n
PORTABLE MACHINE SUCH AS A MUDCAT OR BACKHOE. PERMANENT POOL REQUIREMENTS (EXTENDEDDETENTION WETLAND #1): PERMANENT P THE TOP FEW INCHES OF SEDIMENT SHOULD BE STOCKPILED ANENT POOL REQUIREMENTS (EXTENDED DETENTION WETLAND #2): REQUIREMENTS (BIORETENTION #1): UQQQ
zzzZ m
SO THAT IT CAN BE 'RESPREAD OVER THE SURFACE OF THE go00
WETLAND AFTER SEDIMENT REMOVAL RE UhRED PROVIDED REQUIRED PROVIDED REQUIRED PROVIDED ~~0U
Q~ www
3. REMOVE TWICE (2) ANNUALLY DEBRIS THAT HAS JRFACE AREA: 11290.71 SF 31977.24 SF SURFACE AREA: 769 SF 11527.81 SF LU CL 0- C
COLLECTED IN THE WETLAND. SURFACE AREA: 81530.24 SF 91055.84 SF SURFACE 4. INSPECT THE WETLAND ANNUALLY AFTER A RAIN EVENT HIGH MARSH PLANTS: 3,110.18 SF 3,200.25 SF HIGH MAR TO INSURE THAT THE FACILITY IS OPERATING AS DESIGNED: 0000 w Un Un cn
IGH MARSH PLANTS: 62675 SF 11397.25 SF j Z
0 ' .D .D :D N Dopy
5. THE.. FOLLOWING ITEMS SHOULD BE INCLUDED IN THE LOW MARSH PLANTS: 3,110.18 SF 31175:54- SF LOW MAR INSPECTION:. )W MARSH PLANTS: 626.75 SF 1,395.95 SF LO 00 N ?U
0 -NNV
CLOGGING Of THE OUTLET OR TOO RAPID A RELEASE, MICROPOOL: 11332.94 SF 11386.38 SF MICROPO EROSION ON THE BANKS, ICROPOOL: 268.60 SF 600.55 SF
EROSION AT THE INLET AND OUTLET, SEDIMENT ACCUMULATION AND THE NEED FOR REMOVAL,
CONDITION OF THE EMERGENCY SPILLWAY, AND VOLUME REQUIREMENTS (PROVIDED) VOLUME RE WOODY VEGETATION IN THE EMBANKMENT. UME REQUIREMENTS (PROVIDED) 00
CL 2
PERMANENT POOL VOLUME: 14,327 CF PERMANE PERMANENT POOL VOLUME: 71792 CF TEMPORARY BENCH MARK NAIL IN POWER POLE Q m 7);-: N
o m 0 I l k
GRAPHIC SCALE IN FEET TEMPORARY POOL VOLUME:. 19,051 CF TEMPOR 20 0 20 40 60 TEMPORARY POOL VOLUME:'. 5,416 CF WEST OF COLVARD DRIVE ZI\/ L_jj
ELEV. 659.fs9 tii (D~U ~ w Qw~=~6~ _
FOREBAY VOLUME (20% OF P.P.): 21865 CF FOREBAY FOREBAY VOLUME (20% OF P.P.): :11558 CF 000Uatncl-
SEE SHEET C-3 FOR LOCATION