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HomeMy WebLinkAbout20030989 Ver 2_More Info Received_20070307Environmental Consultants, PA ;Road Raleigh, North Carolina 27614 Phone: (919) 846-5900 Fax: (919) 846-9467 www.SandEC.com ;, t~~ ~ ~,~i i March 7, 2007 rz,~~~~t~~ ~•~~ . ~ S&EC Project # 3822.W1 DWQ No. # 03-0989, Ver. 2 Division of Water Quality Attn: Cyndi Karoly /Ian McMillan 2321 Crabtree Boulevard Suite 250 Raleigh, NC 27604 Re: Reply to the Division of Water Quality's 02/20/07 request for additional information Farmington Woods -Phases 13-15 Wake County, North Carolina Dear Ms. Karoly and Mr. McMillan: This letter is in response to your letter dated February 20, 2007, which requested additional information for the proposed Farmington Woods -Phases 13-15. The following restates your questions/comments and is then followed by our response. Of the 11 questions asked, eight (8) were either addressed in the initial submittal or were not included in the initial submittal because they are not relevant to this project. Specifically, questions five (5) through eight (8) were about Stormwater Management; the proposed impervious surface for this project is 25.24%, which is well below the 30% threshold under Condition No. 4 of the GC #3402. Additional Information Requested 1. Please show all stream impacts including fill slopes on the site plan. The limits of the proposed fill impacts to the two UT's to Big Branch were shown on the detailed impact map. No other areas are proposed. If you have a particular area of concern in mind, please be more specific. Charlotte Office: 236 LePhillip Court, Suite C Concord, NC 28025 Phone: (704) 720-9405 Fax: (704)720-9406 Greensboro Office: 3817-E Lawndale Drive Greensboro, NC 27455 Phone: (336) 540-8234 Fax: (336) 540-8235 2. Please indicate the location of the protected buffers as overlays on your site plan, clearly showing Zone 1 and Zone 2. The two UT's to Big Branch are un-buffered streams as they do not appear on the NRCS Soil Survey maps and they do not appear on the USGS topographic quadrangle maps. Therefore the above request does not apply (i.e. all buffers are shown as per the DWQ site determination). 3. Please show cross section details showing the provisions for aquatic life passage. The proposed impacts to the two UT's to Big Branch are lot fill not culverted corssings. Additionally, these two drainages are at the top of the system and therefore there is no aquatic life passage further upstream, so therefore, the above request does not apply. 4. Please provide documentation that DWQ or Forest Resources has made intermittent/perennial stream determinations on the site or contact DWQ to schedule intermittent/perennial stream determinations on the site. It is our understanding that part of your review process would include a site visit if you determine one is necessary. As part of the original delineation, both the USAGE and DWQ staff were out to the subject property to review the streams and wetlands on site as well as making buffer determinations. S. Under Condition Number 4 of GC 3402, the DWQ can require Stormwater management plans for developments that have, or are anticipated to have, 30% or greater of impervious surface area within an NSW watershed. Furthermore, it is the DWQ's policy that areas of concentrated development with a project must treat Stormwater runoff. Please provide calculations showing the percent imperviousness of the drainage areas to each of the proposed dry detention basins. The impervious surface coverage given in the Diehl & Phillips, PA letter of January 31, 2007 allows only an average of 1,225 square feet per lot for houses and patios and only 450 square feet per lot for driveways or walks. If these limits are necessary to keep impervious surface below 30 percent, then each lot will be required to have impervious surface limits formalized in a deed restriction. The total impervious surface for this phase of the development is 25.24% (i.e. well below 30%), as documented in the letter from Diehl & Phillips, PA which was provided in the application submittal. Therefore, Condition Number 4 of GC #3402 does not apply. Additionally, this is asingle-family, residential subdivision and with the exception of the roadway infrastructure, there are no concentrated areas of impervious (e.g. recreation areas, clubhouse areas, townhomes, etc.). As such, the above comment does not apply. And finally, we are not aware of any 401 regulations that stipulate formalized deed restrictions for impervious surface limits. Please advise us where these deed restrictions are specified within the 15A NCAC 2H 0.500 rules. 6. If any of the drainage areas to the proposed dry detention basins exceed 30% imperviousness, then the DWQ will require those drainage areas be treated by Stormwater BMPs appropriate for NSW watersheds in accordance with GC 3402. This means that the dry detention basin will need to be replaced by either an extended detention Stormwater wetland, a bioretention area, or a wet detention pond followed by a level spreader and forested filter strip. As stated in the previous response, the total impervious surface for this phase of the development does not exceed the 30% threshold and therefore, Condition Number 4 of GC #3402 does not apply. 7. Please show detailed plans and profiles for all proposed Stormwater management devices. A Stormwater Management Plan is not required for this development as the impervious surface is well below the 30% threshold and therefore, no Stormwater management devices are necessary for the 401 Water Quality Certification review and approval. 8. Please submit worksheets for all dry detention basins that are proposed on the site. The worksheet forms can be found on the DWQ's web site at: http://h20.enr.state.nc.us/ncwetlands/drvdetwk.pdf A Stormwater Management Plan is not required for this development as the impervious surface is well below the 30% threshold and therefore, no Sto~nwater management devices are necessary for the 401 Water Quality Certification review and approval. The dry detention basins on the site are for peak flow reduction only. They are designed to control the pre /post peak for the two year and ten year storm per the City of Raleigh. Nitrogen loading for the project does not require anything other than buydown. 9. The slopes in the vicinity of the scour holes proposed at the outlets of dry detention basins S and 6 are too steep for this BMP. Please replace these scour holes with properly designed level spreaders. The level spreader worksheets and pictures supplied for the pre-formed scour holes proposed at the outlets of dry detention basins 5 and 6 clearly depict that the area in question is flat. However, level spreaders have been added in lieu of scour holes for 5 & 6 even though the slopes are flat. The level spreaders discharge to a small tributary before they discharge into the buffer. 10. The slopes in the vicinity of the level spreaders proposed at the outlets of dry detention basins 7, 8, and 9 are too steep for a single level spreader. Please either place level spreaders in series to achieve diffuse flow or a properly designed Stormwater management facility to control nitrogen and attenuate flow before Stormwater is discharged. Level spreaders in series have been added for Detention Basins 8 & 9. The discharge from Detention Basin 7 will be routed to Detention Basin 8 via a surface channel above the buffer. Detention Basin 8 will discharge the combined flow from 7& 8 onto the level spreaders in series. Two level spreaders in series are provided for Detention Basin 9. 11. The existing buffer conditions for the level spreaders proposed at the outlets of dry detention basins 7 and 9 appear to be wooded, requiring 65 of level spreader length per cfs of flow. No photo of existing conditions has been included for level spreader 8. The DWQ cannot complete its review of level spreader 8 without a photo showing the existing condition of the buffer. The photograph that was included for level spreader 9 covers the area that will also include level spreader 8. The length of level spreader for all discharges has been adjusted for 65 feet per cfs for the 1" storm discharge. Note that the detention basins attenuate flow in all cases except Detention Basin 6 to reduce the length of level spreader required. An additional photo is included in the revised submittal package. Note that there is an existing established sewer easement just downstream of Detention Basins 8 & 9 that has thick ground cover not forest. Please call if you have any questions or require further explanation. Sincerel y, , ~~, ~ ~- ~ ~~-~ ~-~~~c~~~ Nicole J: Thomson Regulatory Specialist Attachments: 5 copies of Response letter CC: Mr. Jamie Shern (USAGE) Mr. Mike Horan, DWQ Raleigh Regional Office DWQ Project No. O 3 " ~~ g ~ V DIVISION OF WATER QUALITY -LEVEL SPREADER WORKSHEET (112007) I. PROJECT INFORMATION (please complete the following information): Project Name Contact Person: Level Spreader ID: Level Spreader Length X1-3 ft. Drainage Area 1, S'( ac. Impervious Area ac. Forebay Area ~'7D cu ft. Maximum Filter Strip/Buffer Slope ~-'~~ grass (perpendicular to flow) (on-site and off-site drainage to the level spreader) (on-site and off-site drainage to the level spreader) (0.2% of the contributing impervious surface area) (6% for forested, leaf littler cover, 8% for thick ground cover Max. Discharge from 1 "/Hr Storm ~, (o (,a cfs (LO z.r"t o ?N.2~,~ !3 ~~ t,,~1 Max. Discharge to Level Spreader ~~ cfs Filter Strip/ Zone 2 Buffer Vegetation rr,2~~~ (thick ground cover or grass; canopied forest with leaf litter groundcover) Pre-treatment or Bypass Method Used Q(~ Y +~~~ C~l~,~ ~. A.4y l~~ ~.,. ~.r«~:,~ II. REQUIRED ITEMS CHECKLIST Uc1~.v~.t~ ;~,-t. ~ ~ ~~J~~tw Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project. Applicants Initials fi~,~ Project Site was visited prior to designing level spreader. ~111.1~ Date of the Site visit. PLEASE ATTACH TIME-DATED DIGITAL PHOTO OF EXISTING BUFFER CONDITIONS. J~,I7-.t+.~ Level spreader is at least 13 ft. per cfs for thick ground cover or grass or 65 ft per cfs in canopied forest;with leaf litter for 50-foot buffer; 50 ft per cfs for 100-foot buffer, or 40 ft. per cfs for 150-foot buffer. N ~~1 Pre-Formed Scour Holes are on flat slopes only. d4/UC., No structures are located in protected buffers (must meet no practical alternatives criteria). Design Alternative (if any) and Bypass method used: Bypass conveyance method is specified and plan details and calculations are provided Alternative design option is specified and plan details and calculations are provided. Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the bypass discharge. No structures are located in protected buffers. Plan details for the bypass and outlets are provided. The operation and maintenance agreement includes annual erosion and vegetation repair. The operation and maintenance agreement signed and notarized by the responsible party is provided. l w-~~ DWQ Project No. R~.Ji t~Q `~~~" - ~ DIVISION OF WATER QUALITY -LEVEL SPREADER WORKSHEET (112007) I. PROJECT INFORMATION (please complete the following information): Project Name : f ,q r~._ryt ~nJ~T, 0 ~ t~C>O!~J Sr~.?~it yiSlOn1 I'~l~lA SG.S ~~ -lS~ Contact Person: ~;1_q,~J 1 ~=,1Ztb . ~~: Phone Number: ~~~) ~ 7 -y~Td.. Level Spreader I D: n C~ ! n r.J f,~y, t~,d,1 L~ _ ~j Level Spreader Length .7 S~ ft. Drainage Area ~~(~ ac. Impervious Area ~ (~, L~ ac. Forebay Area i4C(- ~' cu ft. Maximum Filter Strip/Buffer Slope ~~4T grass (perpendicular to flow) (on-site and off-site drainage to the level spreader) (on-site and off-site drainage to the level spreader) (0.2% of the contributing impervious surface area) (6% for forested, leaf littler cover, 8% for thick ground cover Max. Discharge from 1"/Hr Storm (, IJ cfs Max. Discharge to Level Spreader S, ~- cfs Filter Strip/ Zone 2 Buffer Vegetation t~p rLa~ SY (thick ground cover or grass; canopied forest with leaf litter groundcover) Pre-treatment or Bypass Method Used ipc~.~ ~ t-Z.FrtJ't'I,C~,~ II. REQUIRED ITEMS CHECKLIST Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project. Applicants Initials /1.11.. Project Site was visited prior to designing level spreader. ~ 1Lr~ Date of the Site visit. PLEASE ATTACH TIME-DATED DIGITAL PHOTO OF EXISTING BUFFER CONDITIONS. e4.h.d~, Level spreader is at least 13 ft. per cfs for thick ground cover or grass or 65 ft per cfs in canopied forest,with leaf litter for 50-foot buffer; 50 ft per cfs for 100-foot buffer, or 40 ft. per cfs for 150-foot buffer. Nh4 Pre-Formed Scour Holes are on flat slopes only. ~~ No structures are located in protected buffers (must meet no practical alternatives criteria). Design Alternative (if any) and Bypass method used: Bypass conveyance method is specified and plan details and calculations are provided. Alternative design option is specified and plan details and calculations are provided. Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the bypass discharge. No structures are located in protected buffers. Plan details for the bypass and outlets are provided. The operation and maintenance agreement includes annual erosion and vegetation repair. The operation and maintenance agreement signed and notarized by the responsible party is provided. F~ ~6 R~~~st:~ ~~~~~ DWQ Project DIVISION OF WATER QUALITY -LEVEL SPREADER WORKSHEET (112007) I. PROJECT I~ Project Name Contact Person: Level Spreader ID: TION (please complete the following information): ,(~ ~_g~J IG5(7.l-e ~F Phone Number: Fjf~) ~tC? y`I'I}~ ~~r;~r-1a~ 13.~~iry nl~ a ~r~~c:~.~q~s c:~:~-t~tc3r~r~;,~3 /~~~'c.~ h~6~ ~~~:~.,, ~J~.6.~.1"f~~~~ t Level Spreader Length T(.~O,~I SLJ'~1~g~, ~b ft. ~.A~ (perpendicular to flow) Drainage Area 5` Fey ac. (on-site and off-site drainage to the level spreader) Impervious Area .f. ac. (on-site and off-site drainage to the level spreader) Forebay Area ~. y IL>O cu ft. (0.2% of the contributing impervious surface area) Maximum Filter Strip/Buffer Slope _~,__ % (6% for forested, leaf littler cover, 8% for thick ground cover grass Max. Discharge from 1"IHr Storm J. ~ cfs (:~c~..)'~"r,t ~ ~tP..v i~ C lZ ~ i ~-4,~~^~ p,~ ~; Max. Discharge to Level Spreader (~. ~ cfs , Filter Strip/ Zone 2 Buffer Vegetation r ~,/L~ T;' (Sr~~.Z}tv~.- (thick ground cover or grass; canopied forest with leaf litter j= .s~.TEM~•ti.r ~~;-~ groundcover) Pre-treatment or Bypass Method Used ~/2~ ,~~rv~~~l~:~ ~~ n: ~ -? ~ ~ ~ ~ Tj fey ~ c:Ti~:.rtz~,,.~ Jc~L-U~'~l.£ I~7 ( ~~i~"~%X~-t II. REQUIRED ITEMS CHECKLIST Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project. Applicants Initials ~~ Project Site was visited prior to designing level spreader. rAfi-aL Date of the Site visit. PLEASE ATTACH TIME-DATED DIGITAL PHOTO OF EXISTING BUFFER CONDITIONS. A lu t~ Level spreader is at least 13 ft. per cfs for thick ground cover or grass or 65 ft per cfs in canopied forest with leaf litter for 50-foot buffer; 50 ft per cfs for 100-foot buffer, or 40 ft. per cfs for 150-foot buffer. ~`~~ Pre-Formed Scour Holes are on flat slopes only. ILtt~ No structures are located in protected buffers (must meet no practical alternatives criteria) Design Alternative (if any) and Bypass method used: Bypass conveyance method is specified and plan details and calculations are provided. rnative design option is specified and plan details and calculations are provided. Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the bypass discharge. No structures are located in protected buffers. Plan details for the bypass and outlets are provided. The operation and maintenance agreement includes annual erosion and vegetation repair. The operation and maintenance agreement signed and notarized by the responsible party is provided. ~~ ,~,~ ~.i~s~ ~31~.,~a i DWQ Project No DIVISION OF WATER QUALITY -LEVEL SPREADER WORKSHEET (112007) I. PROJECT INFORMATION (please complete the following information): Project Name : ~~~nf s~.,r~~r;ts:nJ (70~C1 ~ SJ~ ~l c.~~ ~1 d~ la~L~.~~S ~ S Contact Person: 4 ,~J,~J t'~~r` 1Tt~-6 : lQ~' Phone Number: 1`il~'1) ~i-b) `~} I Level Spreader ID: I~~F~1;i~i~'V (.~,~;,f ~~1 1Up~ j Level Spreader Length ~ °UJ,^ ,r] ; i:./1,ItrS p~ ~,4 ft. ~'=~d (perpendicular to flow) Drainage Area ~ ,~1~ ac. (on-site and off-site drainage to the level spreader) Impervious Area E ~ ac. (on-site and off-site drainage to the level spreader) Forebay Area ~,'1C, ~ cu ft. (0.2% of the contributing impervious surface area) Maximum Filter Strip/Buffer Slopes r~. % (6% for forested, leaf littler cover, 8% for thick ground cover grass Max. Discharge from 1"/Hr Storm t'~> ~ ~ cfs 1~ ~A Tyr`-v i~:'~ 4) Max. Discharge to Level Spreader ,~' cfs Filter Stripl Zone 2 Buffer Vegetation ~~ A F - 5~=~~ (thick ground cover or grass; canopied forest with leaf litter F-~~ir~~%~t ~~.>d~'" groundcover) i3 ~~~ Pre-treatment or Bypass Method Used ~.2~/ t~irT`i~ ~(c;+tiJ REQUIRED ITEMS CHECKLIST Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not heen met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project. Applicants Initials .• n~L Project Site was visited prior to designing level spreader. AJl.ll. Date of the Site visit. PLEASE ATTACH TIME-DATED DIGITAL PHOTO OF EXISTING BUFFER CONDITIONS. ABU ~- Level spreader is at least 13 ft. per cfs for thick ground cover or grass or 65 ft per cfs in canopied forest with leaf / litter for 50-foot buffer; 50 ft per cfs for 100-foot buffer, or 40 ft. per cfs for 150-foot buffer. ~/~4 Pre-Formed Scour Holes are on flat slopes only. ,~,Mc~ No structures are located in protected buffers (must meet no practical alternatives criteria). Design Alternative (if any) and Bypass method used: Bypass conveyance method is specified and plan details and calculations are provided. Alternative design option is specified and plan details and calculations are provided. Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the bypass discharge. No structures are located in protected buffers. Plan details for the bypass and outlets are provided. The operation and maintenance agreement includes annual erosion and vegetation repair. The operation and maintenance agreement signed and notarized by the responsible party is provided. l ~J D3- o~8q V2 LEGEND ] r( ;~`.'',~ ~ ~1. ] ~~;;,~' -- ~ arv R~ I 1 ,~ ' ~ '= = yIp ,_ -___ c v~ eRaL N°TES ized_( -~© case .mgr - LNE( "' / , / ~f~ dapr en~a'lfr~j ~'R. C&EECH- '~'- ~- Z\ ~ae 6~Ir ayo,oGzw~d i g, ~]1 ~ Eus,o no secrion i ~ ~ A, ' ~~ ~ '~~.~~~ _ _ _ ~ r„m I I ]'~~ ~ 1 ~ 5 , / ,- ~, .~` ' 1~:-. ;.'. 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(vsJrI I W oe ~ cuss ~ P ~ - i r `~ ''a ~cL AR111'kCT01 WOODS ~u, 192 e.`V ` PRASE 7 ~ a°' 160 c c - me eR E sA re e6 (el o iz r z e ~ e6a zfis.v C. N ASWE C S 319511) P25 ~ 0 a6 ^ 26~A0'~ a ~ z< o ~'T1 F-}2 19 5 ° 22 ~ ~ ~A" "°` ~`EXIS7'I'~ C ( 1 EVELOPh1P' N'~~ ~ \` s U x_ ASYE L S '1.10 ([]S) ' ° ~ y }< y5 50 25] a0 ~ B fi v-}6 12 B I B 4 22' I B ~ ' A ] A + 1c Z~!\E' R-6 LZ , c ~ n. oprrt sF ,u a B.ie 1 a i o9 1ivs,ro c. ~ omvE s m+fi (1) a 3s ~ zz '! a-~ ins ns z< . fi ] sa ~ 6 zr a ~ s' ~ °- B ~ 2 az' B ' e' I 5 'IA'A 5 N 0~ _R PJ5~C ul s Bc ~cxe s Ew 1 s A ~o swowP Rauvs ARE ro BE c sra c Au srvEr-rs RESIPENT]AP C ~ x U rl c- M o s s b..6 IL) aso i e a.o z ado ~ s 6 - Fs SPEC. Eo arc. DoE s` E r r~ES yr B n~ea+EB 3/ ~~ c a &- ~ 129 n z c._ . c s, 6-06..e ~ 53e ~. zn~e Z ~c s aE s s Ess c AwE ~ O MARL OAM 51. e.aa51 (A¶ PI t2 0.6 ]660 214b0i 00 G Wgrilf peM P 5 ~n0.iiZE0 BY R,EY APPgWA.. IIBLiC 5AN FRY SEWEA FASEMENrs ARE r0 BE RECOUOF- vCn A. 2 , a 5 (L1, 053 fi °6 Z 1 50 a i3ai c. c6s c. ~. ~, 2 ' c 6 aan'. ERG ~c ErwL ACCEP-FYC~ GRA?:aC SCALE O O ' . -3 co c sn vs3 cs s+c z zr5 4~ unsaoR Aa sxa c b 6 ~ _.. -~T- . 012'./att I U~By l 0 aP 99 2r]89i 55 ~ , WAfiIL ORM SI,I a-.~3.r5 t5~~~ 1.19 0 a]5 i0 ZiSW' s,RUa: -zv a54 o c I zsam ~ vc' ~ Y s PRBLL U! r~5 ~r":~ - - _ - z , a.eae.orzosn°, ~c ~ _ - _ - I I ^ II ~~ I/ ~ anrola~asrv~M'd ~ "~, ~S{f.-C>~~CFt ,, ~ sTaeeT TREes _ nRK h r ~ cD D uue E 1 l i 11 ~ I l r , ~ - ~ ~ R R D S NS N" E KC u9R REDS 5 l0 849 t Ar.Ac r~/,ry{ .p~T 5 S4W1001 G D E~tC 5 CIPIS9MA 1p Bk3 2 1'~ ~~ ,\ 1 r' IIi IIr ~ ~p L roc ~ 'i.}yfDn~*~an2jTM / IFS RLI'I£ SWEE'G'JM D HpR ttAC 'RDi & .S BY3T1 ~ ARK I I r ~r )I~yj /'y~ rM r .~ r , U/lV }~.Y L-}L` C`Li \M - ~ ~ I ' 0 I iLPN W _ D EiC S (LLOS l.0' 849 2 ~~ ~ ~/~I Y ~ , ~ II ~ i ~ Y ~ ' ~ I ~ rr 1 R _ ~ - _ ~ '- ,' ~i/ ~ _ Si.4AiC DVY ~" h /;J~ A,Y C~ ~ rh/ii~il ~ ~n~ Ali ~l~ I r~ - _,'-~Fc- 'i-V l I ! ~,o xss-uua, i>~a 6', ~=ao. Ir r~~r ~ r~~/i , 1 s-J ~I I f~ r v-ryi ~ ~ - ~~'a6€ 5 /i `. ~. ~ ~ / fWan1115-LP rir~rr r,'q,~ir%,~'%`~' yCv` I r(tii `~~t `M F~ / LANDSCAPE NOTES IlN r~ ri ~I-' ~ ~°,~A~~rt~r I '' ~'%~~ ' I ``fir ' 1~ Ir 'ir`rl~Ir\~lilr~,',~p~r~ ~ J r i~r I '~~ ~~r ~~. / ~'agxwwn ore Gu.o 'D _D ~,a /lr~p~!/irj~''%~~/ ~~ ~ ~ ~r~~~' ,%/%r~ r~ l ~~~r%~,Q"~~~~'~ ~ r ~_ __ !i~~ rY~i / ~~' /; ~:. i~auECOiviars aeouieeD aLwnnus ReouiRa ar .xE Gm i.l~"'/hr rr%i,'~/~'/'~I ~; ~' ~ ~; % % "' ~ _ ~' - I I --- _ _~~~ _~ ~ L r 'r~ /, T'E~R'.vIINGTO~ WOOS i'~ "uRSE~ sacx"~ i°ECOnuESeey'nssoauna a v~,~~°-.w`06~. CARb~; ~~ (~ ~ r ~p'rrf%yy~ ~~ ~y r ;~ ~raar5reeiyia v ~ '' ~ / ~ r ~ r I ' ' I i ' 2~ i~ il` ~ ii i ~ _ _ _ ~~'-` f +- - - - L-' ~` '' % F~l}SE'" 5,'& 6 a io°anax a cuxr ualERwE ra eE eninED e~ urvoscnrc t~~r4~ y ! MJ~ c4ZnR}50 uu~ 5 r A rr I ~~ ~ ~ ~ '- ~ ~ ° ~ i_- ' '~ a " ~ • 1 ~ ~RCn [cr eoe D su~nrD {~,~(.,~(4 ~' ~ ,-~ r- s.R ~ [*; ;~-~ `~ ~~~tEXIST]NG D~WELOPMENT SALL LD Lb' D"LDNW D S 'pAAx ~/inu~1,7'/~'4'~'~ r~ ~ ~ i r~ ~~ r ~ ~ L ~ ~ ~ i ' W, _ _ 9Ec a ^ns a ~n_ Gn a wa.,c. _ ZOtiE 0 ''I I ~~ ~' ~ 1 ~ ~i i ~ I r we I i _ ~-~ ~ li 1 I '~` s ~I~An~~ DRIVE ~~ -' _ ZONE:--ICS 6 v ~ 6 u4 ~x v0 ams w rD ae uuEaED ~D a"NU D_orR~ '~ r~ll,~~ ~ ~ II D v - itESID DG DE r CEhf~~ ~ rrr% I'r~ ~~ I~-~ ~I I _, ~~I~ ~ ~~ E T[~T. ~~I ~lA II r ~ T-~y J D I I A E. ALL UW ARFPS DBE 5®ED AS PER SEfp NO i'~ii ~~~ y~ r ~ ~ ~ ~ ~ ~-j I I ~ ~ f l~ 1j D IIr ~ II ^ A ROi' ~ - _ ~~ 6 REV G IJND 9E COUaAC' DM1 ~DRN AND WE , LiCY'V. _ `r r ( v I` ~ r r J I, 3 it ~ ., ~ FC~om ; 2 ~ Len.ea coenre w ~ t I ' v /~~i': i i I A~ 3Q I ~ li I 1231 ~1l ` I~ ~_- ~I~' w r i'I fEr~es_tii~ 27 ~i ~ ~ - r,/r,'. 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LIJ \~~ ~~~ '-`~,~ -~-- ___'_ - =; - %.r_ I~~- __'~-= 5 -;__- _- _- _-~ of " ` _ .`c t 'n ,'~\ rd~~ _exlsuvc /\ - `c,_ _~ ~ _l- ~s~~wa \' _- -_ ,ll,,;,'~i ~,HASE 13-_ __~___,__ ==a-',~ BRANC~~~ ,a\SPACE ~` -- ~~`.'~:` \\`i`• ~, ~~ '~\4'V:'q `, Peaseum ' ~ _ ~ ~ ~,, h~,15 ~ZS} _,t a , ., ~~~ - - ~ I ' "a ~~;% RESTFU6 PINES SAD ~~ ~ I' ~ 4n ~~,,~ "`'~•-`~ ~~~'"-~ H,,4` ~ ~`, A~~` ,~1 B.O.M. 1962 PG. 118 I _ _ I ~ v I a« aac rc dti Evcr - ~o ~ 'V L-!,~i~'~!~- ~ , , ~rlr, _ -- - ~ ?`3PCx ~S~AC~~~; ~' ~ ' /; r r^~, ''.,'~ 1 ~ ~"~,~,w ~ ZONE R-6 ~ _ _ ,_ - _, ; ~ I ,,I - "(noc;,~vduw7i~' -,i ~l, 4~r''' -;__~= ;-___ ~~- = ~,-__ . ~_ 0 5 9bEN S~A~F ~ I ~~~ \`2 -~ ' ~ ~~~ _ ~ ' ~ _ ~ 255 ~`J~N ~, Y. ~ i ~~` ~ 1 A ;;_::~ ~ V ~{ RESIDENTIAL ~ -aww -~,~ ~ ' -'~_ - _ ~ ;~ 6 00' v y I ,,, ~` (U ~ --- Vii`---- t; t`~'-%n~i_=~, __ __- ~ -____ _ ~~-~`-~; ~~~ ~r 'i1149 ~I ~" _ _-~~_'~- -~`~a`~.~ 1 F ~- _ ~~~ ~ ~; v~'~r' ~ OPEN S?A ~~-l ~ '-~- ~- =_- i~ i ~%~-- ~ t A5 n~ ~I 4A I I~ a i 142`~II'_rr _ -_ ~ ~;--3 ~`~~ ~~,~~;.,-; ~l ~ Ilii~ ~I / I ~ , Gf ~ , ~ ~~' ~>_^v„ " , ~ '= ~~ ~~ ~ ~ I ~ 'i 146 i.~`i a ~ I -~- Q ~~ ~°,-,._" ~_ ~~ k ~ PA er +idt' ~ `y ~ i ` 1 4` ~~ 7`1~ / ~ f~w x , _ _ ~~ ~ r 148 I I' ~' ~/ ~ I ~ ,-~~ ~ ~ ~ ~~I I~ `' - <<~ ~ ~`~ ~~h; ` 'm ~~~~~~~~ \ =K ~ y`4 "i Anp c~FPRM M~'~j'I ~ ~ I ,,.e_ ~ I ~ ~~~~ 149 I i ~ v _ o ~ ~ ~~ 3Y4~ ~~~,µa1~~~, -- '{ I r I /~ i ~_';;' ~L // ~ / ~ l -~,~ ~_ -_ '(1151 150 ~ _~ __ " -- ~ I' I I ~ ~ I ~ G ~ _' 'v!4C' -T ?~~ :.,ry11'~r'` : P ,` ~ ==pty (y ~i I'UP~1~~~~~C! i,'r ~~ I _ I , ~ ~ ~ ,~ ~ ~ ~ L52 I _ I r _~,~V ~`; ~'-~J,-_ r I ~,~,~_- ~ _ ___ _ ~ ail; ~ ' '' i I ~l ~ I I` --_ ~ _ II -_ - - - ~ - __ = ------ - ~ I I i I r yA ` ~ _ I 163 ` ` ryrye~,,,,, I I ~i / l ~ ~ I\ 154 11i _II t",'', _" :+~_I~r~ ~1~. ~~~i __I - -- i '~ -` _ - ~L~~4 L~i ~ f jli ~ 11~\yl`~\\~l `I\~I III 1 Q y 155 ~ ~ ~ ~ P it ~ ; ' I+-~"~' ~ ~ I ~ V `~-°-~i E~ ~ ~ -, 1 ' 1 1 11 'y ` \ \ y~i} `~ II II O r' r I~,_ / l yy~' ~ i~l~ 1.'y 17 ~ ~ ~ I 1~1'~8,~ 17 ~ ~ i'L80. - '~~ ~ ~ - ~~T ~- A`, `, Ilyl ;'I ~ O I ~~ i I I l I' 177 ; (81/ _-g -~ 3 I I~ I I r' 1 ~-'~ ~ 751r~ ~d761 1 I'll 6 ~'I',;I~I I~`, 'I~ ,~! 14® ~ _ ->..- - ~~;` ^•I" ~`.`y,',1 r,z l ---'=-, ~~ i II II L I ~ I~ II ~ ' '~r ~ ~ Y~~- „~ --~'a~--- ~ 6.~`~`, 'I A11i 'i I I 1 I I I ~ i ~,-- ------ ---'~~ ~ _-- -_- ~ I~ I i I~~ li ~ 1 ~~U I 'I I ~ ~ NCR ur .aDER ~-~ 1 I r" W C=7 ~FEr&u ~~rcE ,: ~~ I z ~ d 'REE aD ~L LLdE IkXSP.WrtD A~>N[ ~+ Rc ~~ ~x ~MN VJ LNRD DI wDDI c~ on ~' :~ - ~~~ ~I 6~,u ~ ~m~.mAl „6 ~3 s,urea ~v~ De .a~ a RDar au. u sro.y. ~ ~ - ~-"~ D (Waal MN w4 ~Y~<'~ _ nu Y.3Ye f[ TkgpYiKV 6fn~f viy w~rzw. 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VARIABLE AS DIRECTED BY THE ENGINEER MiN. 10 GA. LINE WIRES * FOR REPAIR OF SILT FENCE FAILURES, USE No. 57 WASHED STONE. FOR ANCHOR WMEN SILT FENCE IS PROTECTING CATCH BASIN. 12-t/2 GA. MEDIATE GRADE STEEL POST -WOVEN WIRE FABRIC ~--WARNING SIGN , ,~--~ SILT FENCE GEOTEXTILE FABRIC R ~ ° ~ ~ FlLL SLOPE I ~ z . ~, ,; n ' ~~'° "' GRADE 6" MIN. COVER ~ OVER SKIRT ~ iv EXTEND WIRE 6" MIN. INTO TRENCH AND ANCHOR SKIRT A5 DIRECTED BY ENGINEER sIDE vlEw NOTE: 40" TREE PROTECI'IQN AREA ~ g" ±~ DO NOT ENTER :r ~vor~s: WARNING SIGN DETAIL WARNING SIGNS TO 8E MADE OF DURABLE, WEATHERPRDOF MATERIAL. LETTERS TO $E 3" NIGN MlNtMUM, CLEARLY LEGI$LE AND SPACED AS DETAILED. SIGNS SHALL BE PLACED AT 5D' MAXIMUM lNTERYALS. PLACE A SIGN AT EACH END OF LINEAR TREE PROTECTION AND 50" ON CENTER THEREAFTER. FOR TREE PROTECTION AREAS LESS THAN 200 tN PERIMETER, PROVIDE NO LESS TNAN ONE SIGN PER PROTEGTlOht AREA. -USE SILT FENCE ONLY WHEN DRAINAGE AREA ATTACH SIGNS SECURELY TO FENCE POSTS AND FA$RlC. DOES NOT EXCEED 1/4 ACRE. AND NEVER IN MAtNTAIN TREE PROTECTION FENCE THROUGHOUT DURATION pF PROJECT. AREAS OF CONCENTRATED FLOW ADDITIONAL SIGNS MAY $E REQUIRED 8Y CITY OF RALEIGH INSPECTIONS DEPARTMENT BASED ON ACTUAL FIELD CONDtTlONS: PLACE A SIGN AT EACH ENO OF LINEAR TREE PROTECTION ANO 50' ON CENTER THEREAFTER. -END QF SILT FENCE NEEDS TO BE TURNED UPHILL. STAf~1DARD TEIi~P~RAR Y SIFT TREE PR~T~CTI0~1 F~Ef~~E 1A FRONT VIEW 8' MAX. VARIABLE AS DIRECTED BY THE ENGINEER MIN. 10 GA. LINE WIRES .STEEL POST WOVEN WIRE FABRIC WARNING SIGN ORANGE, UV RESISTANT, ~ HIGH -TENSILE STRENGTH, o ~ POLY BARRICADE FABRIC (TYPICAL) i ~ ~ r---GRADE `.'-: '~ NOTES: WARNING SIGNS TO $E MADE OF DURA$LE, 4YEATHERPROOF MATERIAL. I LETTERS TO $E 3" HIGH MINIMUM, CLEARLY tEGI$LE AND SPACED A5 DETAILED. "' SIGNS SHALL $E PLACED AT 5Q' MAXIMUM INTERVALS. 12-1 /2 GA. MEDIATE GRADE M :t :r 40" TREE PROTECTION AREA DO NOT ENTER ~tlk WARNING SIGN DETAIL PLACE' A SIGN AT EACH END OF LINEAR TREE PROTECTION AND 50' ON CENTER THEREAFTER. FOR TREE PROTECTION AREAS LESS THAN 200 IN PERlMErER, PROYfDE NO LESS THAN ONE SIGN PER PROTECTION AREA. ATTACH SIGNS SECURELY TD FENCE POSTS AND FABRIC. MAINTAIN TREE PROTECTJON FENCE THROUGHOUT DURATION OF PROJECT. SIDE VIEW ADDITIONAL SlCNS MAY $E REQUIRED $Y CITY OF RALEIGH iNSPECT10N5 DEPARTMENT $ASED ON ACTUAL FIELD CONaITlONS. PLACE A SIGN AT EACH END OF LINEAR TREE PROTECTION AND 50~ ON CENTER THEREAFTER. N~'~E: FOR T:E ~~QTECTItJN UNG~' CTACAC TRCC CCCCTIC ~CTAI~ 1B HIGH -TENSILE STRENGTH, POLY EtARRlCADE FABRIC .(TYPICAL) 1 FRONT VIEW