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HomeMy WebLinkAbout20071466 Ver 2_More Info Received_20091229IDI - \ ? Lot* VS- Site & Utility Design Services, PA ITE & UTILITY DESIGN 170 Worth Street • Asheboro, North Carolina 27203 ? 43ERV"X?ES Post Office Bog 2151 • Asheboro, North Carolina 27204 (336) 636-5422 • Fag: (336) 636-5421 TRANSMITTAL To: NC Division of Water Quality Date: 12-28-09 401 Oversight/Express review Permitting Unit 1650 Mail Service Center Project: Westerfield Farms Subdivision Phase 1 Section 3 - DWQ # 07-1466 Ver2 Raleigh, NC 27699-1650 Regarding: Permit Application Fee Attn: Ms. Annette Lucas, Mr. Ian McMillan Carbon Copy: We Transmit the following: iV per your request V prints under separate cover I specifications _4 by mail F' change order by messenger F shop dwgs w... by pickup reproducibles by overnight carrier computations - F Application Fee for: V your approval r_ your review & comment your file / use F revision / submission distribution 3 295 sH 9 D EC 2 a 2009 WETLANDS AND STpp W,-.ATE'R 8.°JWCH Copies Date Number Description 2 Plan Sheets 1, 2, 3, 4, 4-A, & 7 Comments: Please let us know if you have questions or require additional information. If enclosures are not as noted, please notify us at once. S:\PROJECTS\ETOWSKI-WESTERFIELD\REGULATORY\USACE\SUDS Tmttl-12-28-09.doc Site & Utility Design Services, PA IT Surveyors • Engineers • PlannersCj & UTILITY E 170 Worth Street • Asheboro, North Carolina 27203 t.S DESIGN EMMS Post Office Box 2151 • Asheboro, NC 27204 DEC 2 j 2009 Voice:(336) 636-5422 a E-mail: contactus@siteandutility.com ftTV? 0 $ 'rE* JAU)Y Thursday, December 17, 2009 jjR 9,,gMC.4 NCDENR - Division of Water Quality Re: Westerfield Farms S/D - Phase 3 401 Oversight / Express Review Permitting Unit DWQ Project # 07-1466, Ver. 2 1650 Mail Service Center Harnett County, NC Raleigh, NC 27699-1650 Attention: Ms. Annette Lucas, Mr. Ian McMillan We are in receipt of your review letter of December 1, 2009 for the referenced project. The revised project plans are enclosed. The revisions are specific to Sheet 4-A, delineating the sub- basin drainage areas and the calculated allowable impervious areas per lot given a maximum impervious percentage of 23.99%. The "Allowable Impervious Area Per Lot" calculations do account for the impervious street areas contained within the sub-basin. Additional Information Requested. The following responses are given and numbered in the order of requests appearing in your December 1, 2009 review: l.) The Project Drawing Sheets remain at a 1"=60 Scale per our telephone conversation of December 17, 2009. The contours shown are from field surveys performed by our office and can be visually extrapolated for drainage sub-basin interpretation. 2.) The US Army Corps. of Engineers has issued their standing on this project in an e-mail to our office dated December 15, 2009: "Jesse, I was thinking about our conversation regarding DWQ's need to clarify the single and complete project for the Westerfield Farms Subdivision. I do consider the subdivision located within the entire parcel with PIN #0514-70-7003 a single and complete project. I have not requested the plans for the whole neighborhood because I can see from aerial photographs and other maps that the rest of the development was constructed in uplands. The permit area, for our purposes, is only the road crossing in Section 3. If you have any questions regarding this, feel free to give me a call. Thanks, Crystal C. Amschler Regulatory Specialist Wilmington Regulatory Field Office 69 Darlington Ave, Wilmington, NC 28403 (910)-251-4170" 3.) The building setbacks, and the proposed stream setback lines are identified on Sheet 4-A of the Plan Set in order to delineate the building envelopes in the culvert construction areas. The project is located in the Cape Fear River Basin, Waterbody Stream Index Number 18-23-(24), Waterbody Classification "C", and is not currently subject to stream setbacks. We are showing a proposed stream setback of 25-feet, however the owner may wish to reduce this setback (suggested minimum of 20-feet) in some areas to facilitate building potential. 4.) We are unaware of any wetland areas located in Section III other than those potentially located along the stream bank, but none of which will extend beyond the proposed stream setback line. 5.) The Lots identified in the Section III sub-basins are identical to the Lots in Sections I and II, in terms of zoning (minimum lot areas 15,000 sf), road construction (20' ribbon pavement - non-collecting storm system), and residence size (1,200 to 1,800 sf - Two Story). The existing residences in Sections I and II represent the impervious footprint that will be typical of the residences built in Section 111. The available footprint areas in Section III have been calculated to support impervious residential construction areas ranging from 3,066 sf to 4,981 sf without exceeding the 24% impervious ceiling that would otherwise require Stormwater BMPs. From aerial photographs, the larger existing residences in Sections I and 11 do not represent impervious construction exceeding around 2,600 sf. Several questions were raised in our telephone conversations with Crystal Amshler, US Army Corps. of Engineers, and you regarding the future road easements identified on the northern portion of the subdivision. To clarify, Mr. Etowski does not own the property north of the Westerfield subdivision, however Harnett County and the NC DOT (taking over the subdivision road maintenance) required that we show the potential for this future connection in the event the property owner north of the Westerfield Subdivision wishes to make the road connection in the future. Please contact us if you have questions or require additional information. Sincerely, Se & tlity esi n Services, P.A. se W. Wilson, P.E. ~~~Wb ~ 0~~yna 0em d„d$Q~~~® ~ ~ ®~4 ~ ~3 ~ m a °a f!! a ~~9 ® ~ a B B~ ® k ' \v _ 3 6+ ~ ~ i ~ - ~ , - ~ ~ ~ aka ~ ~ ~e s ~ ~ ~ i/ E~~~~~4@PW db _ - ~ ~bt_ ! _ i _ ~ ~ ~ i i a.~...~ i ~ i ~ ~ ~a (yc~~~ i ~ _ ~ f ~ yiR t- i ~ i try , ~ s _ oN m - i ~ ~ ~ ~ . ~ i 4 i` r~~ ~ ~ i ~ ~ d ~ ~ ~i$~Z 4 ~ , ~J ~ 0 L~: ~ ` r d Q° ~ ~ ~ ~ 1 ~ - i~~ ~ ~ ~ ~ I i o e ~ ~ ~ { ~ ~ 5 ~ E I i ~ i ~ ~ _ ~ ~ i ,Sf ~ l o / \ r~ l ~ \ ,...Xt~/7S/ i , ~ ~ ~ 3 ~ ~ j ~ ~ ~ Qi7 1' a e ~ ,e ~ ~ a w ~ J ~t'~p e~~ r~s , I ~ r / 1 i ~ ~ i ~ \ i _e~ e , - ~ ~ A i t~ i ~ - ti _t s ~ ~ ~ , / - - ~ - ~ _ n' 1 1 E" i I ~ I ~ CV i ~ / l! i ~ ~ ~ ~ t ~ J ~ ~ ~ ~ I ~ ~ ~ ~ ~ r dl) o O ~t O ~ ~ 4 ~ \ 1 MOSS as ~ s ua 11 I! M i ~ a ~ ~ ~ ~ ~a~ ` f ~ Stonewall Ct. ~ ~ ~ ~ ft i ~ ~ _ She/~ ~~~~•aw 1 ~ .>r. 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BOX ' ~ - I + ' 6 INSTALLATION , ' - . 1 /4" PER FT. 1 /4" PER FT. 1 „ P sl ®~®'®fj®e e'®e S 5+ ! I` I , ~ `'t,~'~. 1-6" GATE VALVE ` ~ 1 " PER FT. ER F7. ® I I { ' ® ' I ~,~,,j & C.I. BOX ~ I _ _ HYDRANT C + ~ 2 ~ f,, I I ' t i ' ` • ~ 8" COMPACTED AGGREGATE 6°° } I ¢ ' INSTALLATION 6 + I + 14 TYPICA ROAD _ , BASE COURSE UNDER ROAD I F ~ ®t 5 I I I ~ ~ ~ SECTI •MH ' I ; + + , .l ~ ~ • ` HYDRANT C NT C ~ ~ w I I 1-6 X6 TEE + 1 , ~ INSTALLATION 6 ~ ® 91 + ® ~ ~ ~t / e ~ rloN 6 ~ I OA SECTION A ° I I, I 2-6 GATE VALVES ~ + 1, ~ ' C.I. BOXES + ~ l ~ ~ I NO SCALE - I I ~ ! snits Of ` + Approx~rnate L~ ti., ~ L i 60'-0" MIN. I I 40 CONSTRUCTION V. 171.0 B SEWER + ~ PIPE L ~ a+ IN 100-Year Flood Per , I I ~ SEMENT ~ 5 MANHOLE (TYP. ~ MBEDMENT TYP. ~ 5 EXIST. MH + 051300E E { FIRM Panel 3720 5 I I I ~ ~ , ! i I i= ~ ~ ~ - ' BFE 168E ~ ~ , ~ z I _ + I ~ , - SEWER _ ~ ~ • ~ ~ ~ I ~ OPOSE~ _ + 40 LF 8 D.LP. pR ~ I HERS _ 5 TYP. SEWER LINE a o i Y OT _ - II ° + N 55 { 48 L.F. 18 RCP RRA_1 ~ _ --_..1 MH-9 - 2-48 CMP(54 L.F. EACH)-VERTICALLLY ~VERTICALLLY OFFSET I ~ I C~ 1.00% w MH-10 It., INSTREAM CULVERT INV. IN 161.02 161.02 ~ I ANENT ' INV. 170.5 ~ I 20 PERM RRA-2 INSTREAM CULVERT INV. OUT 160.52 I tD ~'lrb - ~ , f 160.52 d' I ~ ° ° ~ IN 162.02 I ~ EASEMENT 3+ jt.~ ~ ~ ~ ON-GRADE CULVERT INV. 1162.02 ti ~ I i ' Cle 5 ' _ ON-GRADE CULVERT INV. OUT 161.52 UT 161.52 PAVEMENT N 1 'G M ¢ t I " ~ WIDTH I p l y 3 92 LF 6 D.LP. ~ PER TYPICAL Q I SECTION Z N ~ i ~ ® I I ' a WATER LINE ` I pr I ' + J I ' , ! LIMITS 0 F ' O ~ N TO J I C NNECTIO ~ H I ~ ~ ~ SEWER ~ ~ N I ° I E IST, MANHOLE 5 r CONSTRUCTION 4t I ~ ? I r SERVICE (TYP.) 5 ti 4,, (1 I I nt ' I ' + ~ 4y~ ` I ~ I I V ! ®F I I ~ I', i ti. ~ ~ Q° { I i t4 I i - r•~ ~ ENO IXIST. ® ~ : 1 ~ ""`r ~ I I PAVEMENT I ! ti~y 1 ~zM a~ I a ! ! + I ~ ~ I I t NAR B I ~ I _ m I ~ ® } ~ NO SCALE W i = I }'I t ~ ! ~ NOTES: ® Q I ~ I - + I , I I. PIPE D _ 3 i I ~ I! I EMBEDMENT ( P. 5 ! ®1. THE CONTRACTOR SHALL MAINTAIN MIN. 24" VERTICAL SEPARATION BETWEEN THE WATER i ~ . + I .4 MAIN & 18" RCP NEAR STA. 10+15 AS WELL AS THE SANITARY SEWER MAIN & SERVICE I OI P I ! + ~~~.t I r Q + LATERALS. IF 24" VERTICAL SEPARATION CANNOT BE ACHIEVED, DUCTILE IRON PIPE SHALL BE I ~ VALVE A I y 1 I III + ' ` 1~ USED FOR THE PROPOSED WATER MAIN & MAINTAIN MIN. 18°° VERTICAL SEPARATION. THE ~ ~ n ~ ~ ~ ~ INSTALLATION 6 r I I I ~I 1 , ! PROPOSED 6°° WATER MAIN SHALL HAVE 10' MIN. HORIZONTAL SEPARATION FROM THE 1 ~ ~ I I ~ CONNECT N 6" PVC + + , I PROPOSED SANITARY SEWER MAIN. DUCTILE IRON PIPE SHALL BE USED FOR THE WATER MAIN I I WATER LINE TO EXIST. ~ Approximate Limits Of 4 I ' , I ~ ~ + 100-Year Flood Per WITH A MIN. 5' HORIZONTAL SEPARATION IF THE 10' SEPARATION CAN NOT BE MAINTAINED. ~ ~ m ~ ~ ~ ~ ~ I i I I 6X6 TEE ITH 6 ~ IF NIETHER 18°° OF VERTICAL SEPARATION{WATER ABOVE SEWER) NOR 10' OF HORIZONTAL I TYPE ~ FIRM Pane/ 3720051304E I ~ I RESILIENT V~EDGE , i I + , i ~ I GATE VALV & C.I. BOX + SEPARATION CAN BE ACHIEVED, BOTH WATER 8c SEWER LINES SHALL BE REQUIRED TO BE OF I I II ~ ! + FERROUS MATERIALS. N ~ c I 1 ' III I 2. THE CONTRACTOR SHALL PROVIDE MEASUREMENTS ON EACH SANITARY SERVICE LATERAL ~ i 1 ~ , / I I W E;US7, g^ PVC _ ~ I { WATER FROM THE DOWNSTREAM MANHOLE TO THE WYE FITTING AND FROM THE WYE FITTING TO THE w z w o w w U ~ ~ 1 I { ~ EXIST. 6 x6 TEE W ~ ~ ' CLEANOUT. ~ Q z Z W x o I I 50 0 50 100 150 3. NOTE: ALL WATER & SEWER CONSTRUCTION AND TESTING SHALL CONFORM IN-METHOD, ~ nF. W 5 ° o o ~ Q MATERIAL, AND RESULTS TO HARNEfT COUNTY WATER ~ SEWER SPECIFICATIONS MOST w ~ x Q ~ ~ ~ RECENT EDITION. Q a o v~i x r~ > a w ~ ~ W 91 ' ca e = + o® fA r w~~ z a z a_ ~ ° Z ~ °w a o° Z W x w °w ~ a U oc easures or~zon ac ~ ~ ~ ~ ~ a o o x ~ ~ Q U n{ ~ 4 d ~ Z_ en th = 200.00 Curve ength = 2 0.00 Cu e L g _ 1 ~ ~a a K=20.8 K-20.0 ~ as ~ TIE-IN 0 EXIST J E_ _2• g B E= 3.30 SEWER MA HOLE 5 MANHOLE 5 + 185 185 i 1' ~ 185 ~ SEWER B ~ W 5 ~ N ~ ® J MA HOLE ~ ~ ~ MANHOLE 5 ~ ~ N ~ N 4 \ ~ w ~ ~ ~ ~ Sgg r r ~ r W c~ o ~ + N N ~ ~ 180 180 ~ ~ ~ ~ a 180 ~ ~ ~ \G ~ f ~ ~ ~ II II ~ cc0o SEWER Q > ~ 5i ~ Q> OLE ~ ~ II II ~ ~ J a MANN o ~wF-~ ~ ~jr N00 Q> +p GR ~ +O » W +a~ U.w moo ~qO~ vv `r°~ Q> 175 175 175 i ~ u ii a~ ~ II II Q> z= II II ~ II ~ 92 LF 6" D.LP.Q > ~ ~ Ul W Q > > > Z ~ _ Q > ~ pp WATER LINE ~ w 9 c~nw a.~ ~w OS ~ W » I- FQ ~ ~ ~ ~ Q. s J J Q 18" RCP ~ d > > qT \ ~ ~ 170 EL 170.8E > > F - 170 170 N `4 65 32 g3% _ F 1 • S ! ®2 STA - 17+ 0.00 40 LF 8 D.I.P. eg 167,9r~' 8 vc _ J ' R TYP. _1. _ RIM EL - 7175.32 3 COVE ( ) SEWER LINE t~ Z INVERT OUT = 169.00 II ~ 1 I ~ II Q ° \ STA = 16+84.6 165 165 ~ N ~ 130.40' s" vc @ o.4aq RIM EL = 171.6 165 II Q W MH 10 ~ INVERT IN = 167.15 Q ~ MH 9 STA = 15+17.15 INVE T OUT = 1 6.95 II ~ STA = 13+88.17 Z ~ RIM EL = 171.91 I Q ~ ~ 1.~1~ RIM EL = 177.71 NVERT OUT = 166.08 ~ ~ " p ~ RT OUT = 165.6 I I I ~ a g7 s INVE INVERT IN = 166.28 160 ~ 38 INVERT IN = 165.5 TW (2} 48 R P 160 „ li W 160 8 pvC ~ IN-S REAM EL 16 .77 PROJECT NUMBER L 158,71 ~ ON- RADE EL 16 .77 E 1 EXISTING M 8 DESIGNED BY STA = 10+00.00 RIM EL = 173.51 155 155 ,1WW 155 INVERT OUT = 158.51 DRAWN BY INVERT IN 158.71 JW1N CHECKED BY 150 150 ,JWW 150 17+00 18+00 s~cA~E . _ _ , ~ . ~ d~nn 1 ti+~10 16+00 10+00 11+00 1 z+vu 150 AS NOTED DATE CIRCLE 50 0 50 100 150 ITH si W- Scale 1 50' OCTOBER 2009 Each Block Measures 50' Horizont Each Block Measures 5' Vertical rizontal 2 7 ~rtica ®®®++eeeeoeeeee®e®®ee WATERLINE & SEWER: INSTALLATION / AS-BUILT NOTES: ®•®•••`~®aP~ hM®~••• q~ 1. THE CONTRACTOR SHALL MAINTAIN :®~®i° °~s;•® o ---E MIN. 24" VERTICAL SEPARATION BETWEEN '"N Ra~tabeaut Road 1~.C.SR 11,24 THE WATER MAIN & THE SANITARY SEWER ®.y ~~v w Y THE MAIN & SERVICE LATERALS. IF 24 VERTICAL r ~ $ SEPARATION CANNOT BE ACHIEVED, DUCTILE ®®•,.~®~e , - - - ~ . , ~ . - . I IRON PIPE SHALL BE USED FOR THE PROPOSED ®°•®•ee1e// a . . , N_.__... ~~___3xo_.------ i i 40' TEMPORARY WATER MAIN & MAINTAIN MIN. 18" VERTICAL a___-----moo I i ~______----3N ~ I I ~ CONSTRUCTION I ~ SEPARATION. + + EASEMENT + ~ I I I 2. THE PROPOSED 6" WATER MAIN SHALL HAVE a ~ I 10' MIN. HORIZONTAL SEPARATION FROM THE PROPOSED SANITARY SEWER MAIN. DUCTILE VALVE A I I 6 ~ i i ° IRON PIPE SHALL BE USED FOR THE WATER ~ ~ ~ INSTALLATION I + ® + ~ MAIN WITH A MIN. 5' HORIZONTAL SEPARATION 5 ~ 6" PVC i I I I ~ CONNECT NEW IF THE 10' SEPARATION CAN NOT BE MAINTAINED. ATER LINE TO EXIST. H SEWER SERVICE I 20 PERMANENT W " ° I ~ ~ 3. THE CONTRACTOR SHALL PROVIDE MEASUREMENTS ~ 6"X6' TEE WITH 6 5 TYP. ALL LOTS 13 I EASEMENT E TYPE + Iw ~I RESILIENT WEDG ~ ON EACH SANITARY SERVICE LATERAL FROM THE I I ~ I GATE VALVE & C.I. BOX ~ , wl DOWNSTREAM MANHOLE TO THE WYE FITTING AND I~ =I FROM THE WYE FITTING TO THE CLEANOUT. E&J WATER SERVICE iw ~i > » ~ TEMPORARY 'T B 6 TYP, ALL LOTS I~ I i ~ I ~ I~- >'I ~ TURNAROUND 2 10 ml EXISL MANHOLE I~ I I I N o _ _ - - - -~a-- - - - - - - - - - - - - - - - - ~ SEWER B 0 ° EXIST. MH - MANHOLE EXIST 8" PVC S LINE--~ e e 1 - w MH-14 ~,1 - - - ~M ~a ~ M - --------o----------~ M ~ RRA-1 M M d~ - - _ _ _ _ - - - - - _ - BLOWOFF B cV ~ 1-6"X6" TEE ` " 5' TYP. 6 ~ 2-6 GATE VALVES ~ EXIST. 6"x8" TEE END EXIST. & C.I. BOXES INV. 171.0 ~ 0 ® N PAVEMENT PIPE L VALVE A INV. 170.5 , INSTALLATION 6 4 ~ EMBEDMENT (TYP. 5 „ Z JN ~ , 1-6 GATE VALVE ~ D PIPE ~ 48 L>F. 18 RCP i & C.I. BOX N~~ i 5 MBEDMENT (TYP.) ~ ®1.00 z ~ T " U~ X=M O~~p ~ 1 V ` ~l Q _ LIMITS OF '1-~~ CONSTRUCTION ~ ~ n ~ ~ M 0 ' O~ i ~ ~ r R CONSTRUCTION AND TESTING SHALL ~ . , NOTE: ALL WATER & SEWS _ O ® ~ + CONFORM IN METHOD, MATERIAL, AND RESULTS TO HARNETT COUNTY UNTY W ® \ ~ ~ T R & SEWER SPECIFICATIONS -MOST RECENT EDITION. ~ + , ~J WA E ~ ~ ~ i d 4 1 ~ r ~ ~ ~ ti , , ~ ~ ~ 0 ~ ( °h a i ~ 50 0 50 100 150 ~ ~ } ~ ~ ! ~ ® ~ e~ j ~ o 99 9 m, ~ ~ ca e ~ , i F ® 9 'I t or~zon a . ~ ac oc easures ~ ~ a ~ ~ 1 ~ a 0 0 F V a z ~ a V = Z _ o VI w m a ~ ww o °w w ~ ~U o ~ U ~ ~ Cu e Len th 185 185 _ o _ ~ - 66.03 ~a w~~ ~ K 20.00 Z ~ + o ~ c° E -0,27 ~~M p ~ N d- ~ F } p r~ ~ Z m a d' I`, 180 w~~ ~ ~ ~ Il ii W A 180 " ~ I II II II I~- ~ 1.00% CONNECT NEW 6 PVC ~ cn w ~ - WATER LINE TO EXIST. o ? ~ ~ ~ 34 ° „ + w cn w w n. 6 X6 TEE WITH 6 N > > RESILIENT WEDGE TYPE r U ~ ~ TE VALVE & C.I. BOX a > > 175 175 GA _ w ~ ~ 3 COVE TYP. 1.54% ~ o ~ rn + 170 I- J *j 170 00 00 ~ ~ ~ OC Z G' ~ Curve Leng h +co ~ ~ II I 'Q " ` = 55.25 ~ ii ii IL ~ I° K = 20,0 ~ ~ SEWE B E = 0.1 a II ~ J MANH LE 5 • F. ER LVNE cn w ®y " ~•C• W 8" PV EL 163.80 Q> _ _ ~ 165 165 6 P Tn w > > UU Manh le 14 ~ a. STA= 5+50.00 EXIST 6"X6" TEE » RIM= 178.53 OC INVE T OUT=164. 6 ~S, 8 fig. 160 160 I- Exist. anhole W 10" PVC EL 158.51 ~ STA=13 71.52 RIM=17 .50 INVERT IN=158.71 155 155 PROJECT NUM®ER INVERT OUT=158.51 09- OWSKI-01 DESIGNED BY JWW 150 150 DReeeWN BY 12+00 13+00 14+00 15+00 16+00 17+00 10+00 11+00 JWW CHECKED BY JWW 5~ 0 50 100 150 sc,4I.E AS NOTED on,M Scale 1 " = 50 nta OCTOBER 2009 Each Block Measures 50' Horizontal Each Block Measures 5' Vertical a 3 OF 7 i I r ! ! n, t I ~ r r I 1 ! 1 0 , 1 ' ~ ! ! 0~! v`ryea. `®~O / ! ~ Jv_] 1 r r Q = ®ws° 07 1 5 ~ r ! ~Q 0 ~ + 1 0 ! SAW CUT EXIST. PAVEMENT g ~W ~ ~ ~3~ ~;~~~VV C' ` r ~ r r ! I ! ~ ~ Q °oAe1r . f ~j~'• ~ I . (`]y~~ r ! ~'yV 1 d , 'Y ~ 1 ! ~ r 3' ~8 h 5 b. . ~ ' 1 ! i~ Q 6" ASPHALT BA5E COURSE fA8f0e/ 1 / N d EXIST. EXIST. PAV'T. ~~l~ ! 1 I~ ° r ! P 1 - r i ~ ~ STONE MEETING N,C,D,O.T. ~ a - - ` y ~ ~ i ~ ~,1 _ _ - _ , / - - SPECIFICATIONS FOR A.B.C. ~o ~ 1f _ °",o~~P~.4~4.a~.~o,.po. ~ ~ STONE, TYPE B OR C, TO ~ -z BE COMPACTED TO 100 ~ ~ s 1 a v ~ t ' ~ ~ ~ MAXIMUM DRY DENSITY W~~ ~ b - ~ ~ ! ~ a I ~ ~ _ h , ~ z 20 PERMANENT i /a ° _ _ helb _ _ - _ _ w y r W EASEMENT 1 ~ r ~ t, - Q - _ / ~ _ b ° a _ - ~ ~ U S&UDS ADDED MANHOLE 3 v a ° _ _ ~ ~ TO M~CM 2-17-09 PLAN - ° ~ ~ a > TEMP. CO S~ UCTION A _ - _ ~ , - _ 1 ~ SET TO SERVE PROPOSED r ` / 11 a / NTRANC ~ 1 1 ti , ~ r COLLECTOR SECTION 1, ° ; ~ ~ ° ^ / a lr ! ~ _ _ _ - ~ 1 ` ~ 5 EMBEDMENT ~ PAP COMPACTED BACKFILL WESTERFIELD S D ~ ~ , > a m_ - ~ ~ ~ / ~ 1 ! / r. ~ ~ , ~ ~ rid i r + ~ ~ I o 20 PERMANENT `F / PIPE O, D. PLUS 18" FOR PIPES UNDER 33" O.D. PIPE O.D. PLUS 24" FOR PIPES OVER 33" O.D. ' i I r 1 EASEMENT (TYP.) , ! : ~ ! ® ^t t r r \ ~ + e ~ w~~~ ~ ~ r~~' r ~ r ~ NOTES: i ~ ~ ~ 1. PAVEMENT SHALL BE CUT TO TRUE LINE AND REMOVED BEFORE ` TRENCH IS CUT. ~ ~ 1 ~ z - ~ MITS OF - ! ~ . r / ' ~ ' SEWER H ~ 2. STONE AND PAVEMENT TO BE PLACED WITH LEAST INTERFERENCE f I A SEDIMENT t ( , CONSTRUCTION \ TO TRAFFIC. ® ~ 1 3 FENCE ~ , ~ ° ~ ! ~S RVICE (TYP.) 5 ! ! ~ 3. STABILIZED AGGREGATE TO BE SECURED FROM AN APPROVED N 1 1 r ` ~ I ~ QUARRY. ~ t ~ \ 1~ f / 4 ; ~ 4. ALL PAVEMENT REPAIRS TO BE IN ACCORDANCE WITH N.C.D.O.T. ~ 1 ~ 1 I ! ~ SPECIFICATIONS. J N ` 5. IN CASES OF CONCRETE DRIVEWAY CUTS, CONTRACTOR SHALL ~ D ~ ~ ~ °o .~a ~r ~ ~ ! v ~ , ~ SEWER B ! \ PLACE 12" MIN. CABC. AND 6" MIN. 3000 PSI. CONCRETE Q ~ F STONE CHECK ! i ~ 1 t 1r NH LE ( ) ~ FINISHED TO MATCH ORIGINAL. N ~ ~ l ' 7 DAM (TYP.) ! ® ~ 1 r ; ' . 6. IF PAVEMENT SETTLEMENT OCCURS, THE CONTRACTOR SHALL ~ \ REPATCH AT NO ADDITIONAL EXPENSE TO THE OWNER. m ~ ~ rY ~ TE I I I SURF E A a Z M NO SCALE - ® u ~ ~ ~ t ~ ~ ~ A PAVEMENT ~ ! ; ! ! z - REPAIR E SEDIMENT \ r ! ® OD W ~ ~ 2 7 FENCE (TYP,) PIPE D EMBEDMENT TYP. 5 ( 50 0 50 100 1 )0 150 ` ~ NOTE: ALL WATER & SEWER CONSTRUCTION AND TESTING SHALL CONFORM IN METHOD, MATERIAL, AND RESULTS TO HARNETT COUNTY m 9 ~ WATER & SEWER SPECIFICATIONS -MOST RECENT EDITION. c a e = 9 ac oc easures ori, ~ Horizontal ®o NOTE; THE CONTRACTOR SHALL PROVIDE MEASUR ON EACH SANITARY SERVICE LATERAL FROP VIDE MEASUREMENTS r ATERAL FROM THE a ~ DOWNSTREAM MANHOLE TO THE WYE FITTI~ iE WYE FITTING AND - FROM THE WYE FITTING TO THE CLEANOUT 1E CLEANOUT. ~ v H ~ m z 0 0 w 0 0 a DOG H USE MH OR G B ~a STD, EWER MH 5 5 SEWER B DEPE DING ON MANHOLE TYP.) 5 165 CONS RUCTION TIM NG 165 Z COLL CTOR, 0 _ EXI TING GRA 0~' _ _ DE ~Pi ~ i ` V ~G~ 160 ~~i 160 ~W i ~ ~ t 155 8" PVC E 153.58 155 307.86 ~ ° MH 13 ' 8" PVC ®0.46% MH 12 STA=15+13.68 205.82 STA=12+05.82 RIM=165.Ot ® - MH 2 RIM=162.1 t INVERT OUT=156,03 STA=10+00.00 INVERT OUT=154,60 150 STA 2+65,30 RAMBEAUT D. SEWER INVERT IN=154.80 150 RIM=162.8f INVERT OUT=153.58 J NVERT IN=1 3.78 145 145 10+00 11+00 12+00 13+00 14+00 15+00 W P CT NUMBER 09- OWSKI-01 DESIGNED 8Y JWW DRAWN 8Y JWW CHECKED 8Y 50 0 50 100 150 ~ 5o JWW SCALE AS NOTED Scale 1 50' DATE Horizon t a OCTOBER 2009 Each Block Measures 50' Horiz( Each Block Measures 5' Vert Vertical 4 OF 7 1. THE CONTRACTOR SHALL TAKE ALL REASONABLE PRECAUTIONS TO AVOID THE SILTING OF STREAMS, LAKES OR OTHER WATER COURSES DUE TO THE CONSTRUCTION OF THIS PROJECT. 2. EFFECTIVE EROSION CONTROL MEASURES SHALL BE INITIATED PRIOR TO THE COMMENCEMENT OF CLEARING, GRADING, EXCAVATION, OR OTHER OPERATIONS THAT WILL DISTURB THE NATURAL PROTECTION. eeeebbl/611101//1tt`R'tt°°°°° . THE ROSION CONTROL DETAILS SHOWN HEREIN ARE FOR THE CONTRACTOR'S REFERENCE. THE DETERMINATION OF WHICH DETAIL IS APPLICABLE AS THE WORK PROGRESSES SHALL BE AS SHOWN ON THE PLANS OR MADE BY THE ENGINEER. 3 E 4. ALL DITCHES SHALL BE STABILIZED AS SOON AS IS PRACTICABLE TO MINIMIZE EROSION. EXCELSIOR MATTING SHAD BE PLACED IN DITCHES AND OTHER AREAS THAT EXHIBIT MULCH DISPLACEMENT FROM VELOCITY SCOUR. • ~ N® ° . THE ANGLE FOR GRADED SLOPES AND FILLS SHALL BE NO GREATER THAN THE ANGLE THAT CAN BE RETAINED BY VEGETATIVE COVER OR OTHER ADEQUATE EROSION-CONTROL DEVICES OR STRUCTURES. IN ANY EVENT, SLOPES LEFT 5 eee0®v My~V~~0°•° e ~s~ i WITHIN 21 CALENDAR DAYS OF COMPLETION OF ANY PHASE OF GRADING BE PLANTED OR OTHERWISE PROVIDED WITH TEMPORARY OR PERMANENT GROUND COVER, DEVICES, OR STRUCTURES SUFFICIENT TO RESTRAIN EROSION. EXPOSED WILL T ROUND COVER SUFFICIENT TO RESTRAIN EROSION MUST BE ACCOMPLISHED FOR ALL DISTURBED AREAS WITHIN 15 WORKING DAYS OR 90 CALENDAR DAYS (WHICHEVER IS SHORTER} FOLLOWING COMPLETIONS • ` i i ~ ~ 6. PROVISIONS FOR PERMANEN G OF CONSTRUCTION OR DEVELOPMENT. ~ °,'~b11"" I3.4 AINTAIN ALL EROSION CONTROL DEVICES IN A GOOD, WORKING STATE OF REPAIR UNTIL THEIR USE IS NO LONGER WARRANTED. AT THAT TIME, THE EROSION CONTROL DEVICES SHALL BE REMOVED AND DISPOSED OF 7, THE CONTRACTOR SHALL M A -a p~ ~G~VeOe SO AS TO CAUSE NO STREAM SILTATION. ~ "'"'~~L~``~ ~ ~ R A RAPIDLY AS IS PRACTICAL BACK FILL IMMEDIATELY AND RIP RAP THE UPSTREAM AND DOWNSTREAM SIDES OF THE STREAM ~ CONSTRUCTION ENTRANCE/EXIT, TH CULVE TS S ~ 8. WHERE CULVERT PIPES ARE TO BE INSTALLED UNDER ROADWAY, THE CONTRACTOR SHALL INSTALL E JTRANCE/EXIT, •.°p1~ilftt ~ ,~~,e°e EVERT THAT IT PASSES UNDER OR OVER IF THE CULVERT AREA IS DISTURBED. ~ " ~ ~ RIP-RAP CHANNEL T OUTLET PROTECTION SHALL BE PROVIDED AT ANY CU ~ CHANNEL. PERMANEN nl a 9. ALL DISTURBED ROAD DITCHES OVER 3% WILL BE LINED WITH HIGH VELOCITY EXCELSIOR MATTING AND PERMANENT SEEDING UNLESS OTHERWISE NOTED. 10. SEE EROSION CONTROL DETAIL SHEET FOR TEMPORARY SEDIMENT TRAP SIZING AND CULVERT OUTLET STABILIZATION. k~,t ,n?cv v'`utyY ~.it X~~./.~e Y *h` JG T ~ k,~'d K re`~/•`^•Y XhY~Vi'v~ ~ P : Y E EXISTING TREE LINE ~r,,.x A;s„xa,= xv,A::.,,~.. Y-xUxT EXCELSIOR MATTING NTROL ~ k o 10 os R RAL ~ E E G ~ J Z i ~ \ EXISTING FENCES TEMPORARY SEDIMENT TRAP (TST Approximate L~m~ts Of ~ ~ RENT TRAP (TST) I ~ \ ~5~ + + i o - - - - - - 100-Year Flood Per ~C' FIRM Panel 3720051300E ' ~ ~ / • ~ i DR4INAGE COURSE ` + ~ I ~ ~ BFE 168E _ 1 ~ / r ' + / W + t ~ ~ , • ~ l ~ ~'ra ROCK DAM ~4 a~, ~ / _ T • ~ ° ING GROUND CONTOUR 1 ~ F,{, EXIST t ' 1 e I 11~ t f ~ ~ 1 O ~ ~ ' t ~ ~ ~ h R~' f f ~ ~ / ~ TEMP. SEDIMEN C J ~ l f-~„j ~ / W % ~ PROPOSED GRADE CONTOUR ~ + t i l ~ f / ~ 0 ~ ~ ~ BLOCK AND GRAVEL INLET PROTE r ; I ~ TRAPS (TYPICAL) ~ 7 B "EL INLET PROTECTION I ~ ~ \ 0 1 i~/ ti g b F` / ' , o G utUrB ~ ~ h ~ C....®®®~ CULVERT C rr / R O RRA-1 S~~"ee ;Y Sw , ~C"~,t ~ ~ ~ RIP RAP APRON OUTLET PROTEC t ~ - l ~r V ~ yr OUTLET PROTECTION (RRA) 1 ~ , s ~«y ' e/7S/©n / I I / CONSTRUCTION/CLEARING LIMITS t 54 - _ ~ I f ~ + 44 19.3 S.F. -2 _ _ CULVERT INLET PROTECTION (CIP ROTECTION (CIP) + ~ \ / ~ ~r - ~ N \ ~ ~ - - - - CENTER LINE 4' / , ~ ~ ~ ~ 1 ~ cv v / % f ~i "J ~ Approx~mote L~m~ts Of r / Z 9~. . 100-Year Flood Per STANDARD DOT ROCK SILT SCREE "J OCK SILT SCREEN, ~ ,j / t ~ ~ J N ti ® ~ V - - - - - - PROPERTY LINE R STONE CHECK DAM . -PIPRAP G lRM Panel 3720051300E ~ ~M i ~ I ( / s t roN 0 i i ~ ~ APRON ~ BFE 168E ~ I I~ ,1 1 ~ W N Q~ ~ ~ ~ ~ j ' U ~ " ` -~'~D® TEMPORARY DIVERSION DITCH (TDD} 8 ~®-3 CATCH-BASIN/DROP-INLET (CB) OP-INLET (CB) ~ ~ t -I ~ ~ t4 F ~ Lot 53 w ' I ~ \ m ~ 5~ r 18,354.6 5,~: • ~ I I ~I E SEDIMENT ~ t' r - r ~ - ~ i ~ PERMANENT DIVERSION DITCH PDD) O MIH 5 MANHOLE CATCH-BASIN (MH) g~ PDD ( l ~ -BASIN (MH) + I dZl~ v ~ ! ~ ~ 7 FENCE tih~ f , + ~ I I y 1 t a~i I ~ ~ t INSTALL ON , ~ ~ _ _ - _ _ _ p of 58 - + SHOULDER N TBM TEMPORARY BENCH MARK ;H MARK ~ I I t 1 \ ~ O/~y~ • 15, 0 9.5 S,F. J SEDIMENT FENCE ABOVE ~ W ~ k ~ W + m. ~ CULVERT ' ~ ' Y+ w INSTALLATION G~ ' Lot 5~ ~ i SECTION NUMBER OR DETAIL LEFfE _ H 7R DETAIL LEI"fER I i ; ~ t ~ ~ - BOTH - - - 1 145.7 S. F. o~ Tso-2 l~ ? ~ f;. ~ L~ ~ TEMPORARY SLOPE DRAIN (TSD) ABC ~ ~ I ENDS 5 f ~ ~ 0 ~a y W Q + I~I ~ I ~ ; _ _ - _ _ _ _ 0 123 ~I i ~ ~ ~'f ~ SECTION/DETAIL APPEARS I I ~ Lot TONE CHECK F ~ SHEEi NUMBER (WHERE SECTION/DETAIL F 59 ~ r' • i OR WHERE SECTION/DETAIL WAS TAKEN F IL WAS TAKEN FROM) ~ I .f~ ~ I ~ ~ ,r' 15, 56,1 S. ° . ~ DAM (TYP.) . ~ F. ~ ~ I ` s .~r i t p q,„ t a ` _ D ROL NT CO 1 OS R AND I I ~ I } ~ N ~ . ~ Lot 51 r ~ ~ i r` ~ 15, 050. [y{~--' :F.-.. + q ~ ~ ~ ~ ~ 'f ~ l Lo y o t 60 f 1 5, 526.3 5..~ + ~ - a, ~ ) ~ + ti ~ / ' i ~ ~ ~ .h ~ V \ ~ tai + 3 i i ~ O Lot 61 w ~ ~ ~ ~ E ~ ~ ~ 15, 526.3 S.F I---------------- ~ ~ l / 6`~ii , i i~ E ~ g o ~ ~ ~ ~ M Lot 50 I I l~ ~ ~ SEDIMENT E ~ ~ ~ ~ _ ~ } Y ~ _ _ _ a~ 15, 053.3 S, F ~ f ~ I I ~ ~ / i / ~ i'i ~ FENCE 7 m w Z ~ Y a Li m its - - a i - Lot 6~ ~ is ur ance ~ ~ YP _ _ Lo Ac. , 1. ,203.9 S.~ w L~~ CULVERT INLET ~ _ .-~-r.; f-~' „~---'"r,- + p~o~ pro µ s RRA 1 , , , ~ , J/,.-- PROTECTION ,r + + ~ - ~ ~ ' ' _ _ '~`~a8 ~ r TEMPORARY CONST. A U~ Z ~f - ~D + ~ ~ ~ _ ~ ~ ~ f ~ ~ ~ ENTRANCE 7 ~ Qi by~ . ~i - r.--- _ - oad o ~ ~ d , or + 35 ~ ~ + I ~ ~ m ~ V 5, Q ~ ~ ~ ti + I t ~ • it 1 ~ ~ Z + ~ ~ i i ~ ' ~ STONE CHECK F ® y 17 ~ / TEMP ARY C NST. A ! ~ ~ ~ , + + ~ + 1~ o ~ `.~AM (TYP.) 7 ~ ~ W J 1 ~ RIP G ~NCE ~ 7 ~ r ~ ` ~ " ~ f r ~ , TPA ~ti 1 ~ ,.r ~ ° ~ ti, + ~ i- + ~ ~ ~ F r - l h f tir Sire , { ~ ~ T s ~ t - ~3 ~ ~ + i ~ i + ~ ' ,(,'r~~ 0 W + + \ f ~ \ t ~ V a_ I°°' _ + ~ ~ ---_L ~ i j ' SEDIMENT E Q ~ + ' W ~ i-1~...,. + FENCE 7 + ~ ~ C7 LL ~b ~ ~ i,., ~ . - _ _ - - t' 1 r Limits Of - ~ eau n~p~ 3~Jgaq~~~ '~1 _ r W ,t 1 / ,r , r Road ^ 1 ~ Stu ~ Disturbance (Typ., z0'~ S _ ~Wr I - - , - ~ ~ - - ~'qUl~ Cam' ~"E~ls'NT - _ r7 1 R~ , I 0.43 Ac. ~~D pN ~ . *_w . PROJECT NUMBER ~ ~ - -~~~TM° ~ ~ - , SUB°BASIN AREA (SFj MAXIMUM ALLOWABLE IMPERVIOUS . - ' - CONSTRUCTION PER LOT TO ACHIEVE ~ g~ T A TEMPORARY CONST, STONE CHECK F O9-ETOWSKI-O1 - ~ ON LO V S AREA IN. r / g sA~ ~ g8 <24$ IMPER IOU - ~ Sit, t~ gy do 7 ENTRANCE DAM (TYP.) 7 DE51GN® eY 20 p CE LOq'S SUB-BASIN (SF PER LOTy Qvr~ ~ww r ' gE B - - L~ 1 518705 38066 SF/LOT DRAMM ®Y ' 2 568 934 38 071 SF/LOT JWW 3 398753 38550 SF/LOT CHECKED 8Y 4 758684 48981 SF/LOT JWW 5 648332 48516 SF/LOT 6 22.298 3n461 SF/LOT ~n t~ 60 120 180 SCALE I 7 69,171 91280 SF/LOT I AS NOTED DATE D SUB-BASIN SUMMARY FOR DWQ Scale 1 60' OCTOBER 2009 Each Block Measures 60' Horizontal 4-A c 7 SURFACE LENGTH 98' 6'-0" ®0e`®e"®eee®eeAt®®®® NTH 98' A FLS J , • ® roe e ® 2' MIN. / • ~s m •I LEVEL / COMPACTED SOIL CROWN ~ . alp ~ 4" THICK a J : `e : a® \v~/ ~sd, FROM DITCH #57 STONE 3' BERM : i3 . , FINISH o 9W ~ a° QJ~~ ~~2 EXCAVATION BERM BA LENG i' H / (PLACE ON A ~ H A FLOOD STORAGE ZONE 1.5 GRADE : ~ add ~w°~° ~ / LOWER SIDE p I ~ ~1~~~ OF DITCH) ~;~~S;~y` g I / ~r .r`~,~~`. SEDIMENT STORAGE ZONE ~ _ l ®••I®~®H e,~~®°°• ~P180 ~ ~l ~ tip' i FLOW 2:1 SLOPE `/,~~/~~~ti~~,T%/~'i~. ~ Q 6 THICK MIN. OF OR FLATTER ~,,~,,,..i~i.iv/~/~~.~ ~ m 2-3 COARSE STONE ~'l ~.,~~h ~ INVERT PIPE ~,~f~~i` SURFACE WIDTH 49 ~ 1 r~ 8' 5' MINA } NOTE: THE DIVERTED RUNOFF SHOULD BE RELEASED THROUGH A B SECTION A-A ~ STABILIZED OUTLET, SLOPE DRAIN, OR SEDIMENT TRAPPING MEASURE. 1.5' ' 5.0 5.0' NOTES: MAINTENANCE REQUIREMENTS: I, MIN. MIN. INSTALL AROUND FULL I INVERT PIPE 1 A STABILIZED PAD OF CRUSHED STONE SHALL BE LOCATED WHERE TRAFFIC WILL INSPECT TEMPORARY DIVERSIONS ONCE A WEEK AND AFTER EVERY RAINFALL. 3600 CU FT/ACRE ; BE ENTERING OR LEAVING A CONSTRUCTION SITE TO OR FROM A PUBLIC STREET. IMMEDIATELY REMOVE SEDIMENT FROM THE FLOW AREA AND REPAIR THE BAFFLED i ~ 5.0 MAX. PERIMETER OF DROP INLETS. `r IF THIS LOCATION IS SUBJECT TO SEEPAGE OR HIGH WATER TABLE STABILIZE DIVERSION RIDGE. CAREFULLY CHECK OUTLETS AND MAKE TIMELY REPAIRS ~ CLASS B RIP-RAP e~ - A A FOUNDATION WITH GEOTEXTILE FABRIC. AS NEEDED. WHEN THE AREA PROTECTED IS PERMANENTLY STABILIZED, REMOVE THE RIDGE AND THE CHANNEL TO BLEND WITH THE NATURAL p ' 2 THI5 ENTRANCE SHALL BE MAINTAINED IN A CONDITION WHICH WILL PREVENT GROUND LEVEL AND APPROPRIATELY STABILIZE IT. 12 THICK LAYER OF FILTER FABRIC TRACKING OR FLOWING OF SEDIMENT ONTO PUBLIC STREETS OR EXISTING #57 WASHED STONE PAVEMENT. THIS MAY REQUIRE PERIODIC TOP DRESSING WITH ADDITIONAL STONE ~f SECTION A-A AS CONDITIONS DEMAND AND REPAIR AND/OR CLEANOUT OF ANY MEASURES T P E T IV I I aECTiON A-A Y n FLOW USED TO TRAP SEDIMENT. B " - DESIGN 21 MIN. 21" MIN. ~ ` _ ~ NO SCALE ALL S IMENT SPILLED DROPPED WASHED OR TRACKED ONTO PUBLIC STREETS SETTLED 3 ED ~ TOP OVERFILL 6" MUST BE REMOVED IMMEDIATELY. 1.5' 10.0' MIN. FOR SETTLEMENT ` 0.0' MIN. ~ ~ ~ ~ CLASS "B" T PRIOR T 4 WHEN NECESSARY, WHEELS MUST BE CLEANED TO REMOVE SEDIMEN 0 WEIR RIP-RAP ENTERING A PUBLIC STREET. WHEN WASHING IS REQUIRED, Cf SHALL BE DONE ON AN AREA STABILIZED WITH CRUSHED STONE WHICH DRAINS INTO AN 5.0 MAX. ~ ~ ~ ~ r 2:1 sID APPROVED SEDIMENT BASIN. SLOPE 2:1 SIDE ~ ~ ~ ~ ~ SLOPE EMERGENCY BY-PASS N CLASS 1 OR B FILL ~ _ Max. c` ~x• 6" BELOW SETTLED NOTE: DIMENSIONS ARE MINIMUM UNLESS I® MAINTENANCE REQUIREMENTS: EROSION CONTROL f~ STONE, 2:1 SLOPE 24" MAX. ~ TOP OF DAM OTHERWISE SPECIFIED BY THE ENGINEER. ® N INSPECT CONSTRUCTION ROADS AND PARKING AREAS PERIODICALLY FOR CONDITION OF FILTER FABRIC 1:1 SIDE ~ SLOPEDMAX. NATURAL GROUND PLAN d SURFACE. TOPDRESS WITH NEW GRAVEL AS NEEDED. CHECK ROAD DITCHES AND OTHER SEEDED AT CENTER 3.0' SLOPE MAX. AREAS FOR EROSION AND SEDIMENTATION AFTER RUNOFF-PRODUCING RAINS. MAINTAIN ALL MIN. Z ~ N VEGETATION IN A HEALTHY, VIGOROUS CONDITION. SEDIMENT-PRODUCING AREAS SHOULD BE - MAINTENANCE REQUIREMENTS; TREATED IMMEDIATELY. FILTER FABRIC MAINTENANCE REQUIREMENTS: 1. INSPECT THE BARRIER AFTER EACH RAIN AND MAKE REPAIRS AS NEEDED. ~ ~ I Y T AFT CH A INSPECT TEMPORARY SEDIMENT TRAPS AT LEAST WEEKLY AND ER EA SIGNII 2. REMOVE SEDIMENT AS NECESSARY TO PROVIDE ADEQUATE STORAGE VOLUME N U I FTER EACH SIGNIFICANT (1/2'~ OR GREATER RAINFALL FOR SUBUENT RAINS. SECTION A-A REMOVE SEDIMENT AND RESTORE THE TRAP TO ITS ORIGINAL DIMENSIONS WHEN t0 MENSIONS WHEN THE SEDIMENT HAS ACCUMULATED TO 3. WHEN THE CONTRIBUTING DRAINAGE AREA HAS BEEN ADEQUATELY STABILIZED, X NO SCALE - ONE-HALF THE DESIGN DEPTH OF THE TRAP. PLACE THE SEDIMENT THAT IS RE6 AND REPLACE THE CONTAMINATED PART OF THE GRAVEL FACING THAT IS IMPAIRS PENT THAT IS REMOVED IN THE DESIGNATED DISPOSAL AREA REMOVED ALL MATERIALS AND ANY UNSTABLE SOIL, AND EITHER SALVAGE OR ~ = f~ THAT IS IMPAIRED BY SEDIMENT. DISPOSE OF IT PROPERLY. BRING THE DISTURBED AREA TO PROPER GRADE, ~ ~ 9„ MIN. CHECK THE STRUCTURE FOR DAMAGE FROM EROSION OR PIPING. PERIODICALLY I 1.5' ENSURE IT IS A MINIMUM OF 1.5 FT BELOW THE LOW POINT OF THE EMBANKME THE IEMBANKMENTECIMMEDIATELYFILLFANY SETTLEMENT OF THEN SMOOTH AND COMPACT IT. APPROPRIATELY STABILIZE ALL BARE AREAS ~ AROUND THE INLET, P RAP DISPLACED FROM THE SPILLWAY MUST BE REPLACED a ~ M MIN. THE EMBANKMENT TO SLIGHTLY ABOVE DESIGN GRADE. ANY RIP RAP DISPLACEC A IMMEDIATELY. AFTER AlL SEDIMENT PRODUCING AREAS HAVE BEEN PERMANENTLY .N PERMANENTLY STABILIZED, REMOVED THE STRUCTURE AND aMi ALL UNSTABLE SEDIMENT. SMOOTH THE AREA TO BLEND WITH THE ADJOINING A THE ADJOINING AREAS AND STABILIZE PROPERLY. L INL ! D ~ ' • r ~ - SEDIMENT TRAP SCHEDULE EDULE NO SCALE 2 ® ~ T DRAINAGE DISTURBED REO.'D REQ.'D REO.'D REO.'D ITERATNE ITERATNE OESIGN SE TRAP N0. AREA AREA 010 TRAP STORAGE SURFACE TOP SA W TOP SA ~ TOP SA TOP SA SURFACE ST E OESIGN SEDIMENT SIDE WEIR pESION DESIGN DESIGN DESIGN DESIGN TOP DESIGN 1 SURFACE STORAGE SLOPES LENGTH SURFACE SURFACE BASE BASE OF BERM VOLUME N (AC.) (AC,) (CFS) VOL. (CU. FT.) AREA (SQ. FT.j (FT.) (FT.) OESIGN WIDTH (FT.) DESIGN LENGTH (FT.) AREA (SF} EF M (FT.} AREA (SF} EPTH (Fn FT/Fi (FT.) ELEV. AREA (SF) ELEV. AREA (SF) ELEV. (CF) FILTER FABRIC TfiT-~ 0.20 0.20 0.48 720 207.5 X0.2 20.4 94.0 z5.o 392 TST-2 0.20 0.20 0.48 720 207.8 10.2 20.4 14.0 26.0 392 392 2,5 1 4 188.0 392 183.5 2,198 187.5 178 392 25 1 ~ 16&0 392 183,5 1,824 167.5 178 Disc the area t0 be seeded t0 a minimum depth Of 4-6 inches. A TST-3 0.17 0.19 0.41 396 176.8 9.4 18.8 12.0 24.0 285 266 3,5 1 4 164.5 288 182.0 1,400 168.0 162 TST-4 0.12 0.15 0.29 540 124.7 7.9 15.8 12.0 24.0 288 288 3.0 1 < 1s4.5 z66 1sz.o ,,352 1ss.o 1sz Remove all loose rock, roots, etc., leaving surface smooth and uniform. F 1 I I T T Apply lime and fertilizer evenly and incorporate into the top 4-6 inches a I~ C of soil by disking or other suitable means. Operate machinery on the contour. STEEL NO SCALE - SUPPORT POST NO SCALE WITH HOG WIRE BACKING X Seed on a freshly prepared seedbed and cover the seed lightly by raking or m ~ Q COMPACTED FILL chain dragging; then firm the surface with a roller or cultipacker to provide ~ good seed contact. ~ _ ~ La z 0 ~ DO FLOW a Seeding Mixture Species. Rate (Ibs/acre) Mulch all seeded areas immediately and anchor mulch. ° N ~ , , o IN CHANNELS, ROLL OUT STRIPS OF MATTING PARALLEL TO Seeding Mixt ~ ~ ~ THE DIRECTION OF FLOW AND OVER THE PROTECTIVE MULCH ~ i~ /.art ~ f9 .~/~~k. PLANTS & MIXTURES PLANTING RATES/ACRE PLANTING DATES Rye (Grain) .................................120 a 8 MIN. ~ ~Ti~, Rye (Grain).. (I ~~t4 ~ MATTING NORTH Tall Fescue 80 - 150 Ibs/acre Aug. 15-Oct. 15 Z AMERICAN GREEN ~ (I Seeding Date II MODEL C-125 Seeding Dates Feb. 15-May 4 oR EQUAL Mountains A~ Mountains Aug. 15 -Dec. 15 d FENCE FABRIC FILTER FABRIC Coastal Plair IN. SECTION A®A Coastal Plain And Piedmont Aug. 15 -Dec. 30 Tall Fescue 8c 50 Ibs/acre Feb. 15-Apr. 30 Scar. d ~ ~ Sericea Lespedeza 60 Ibs/acre Nov. 1-Feb. Unscar, ~ °w W - RIP-RAP FLUSH WITH $oll Amendn Soil Amendments ~ ~ S SECTION END OF STORM PIPE OR FOLLOW S01) 1 G, TYPICAL CROS FLARED END SECTION Follow Soil Tests Or Apply 2000 Ib/acre Ground Agricultural Limestone And 1000 Ib/acre Tall Fescue & 60 Ibs/acre July-August ~ m ~ N p• 10-10-10 FI 10-10-10 Fertilizer. Browntop Millet or 30 Ibs/acre w 5 SEPARATE DOUBLE ROW Sorghum-Sudan (Millet & Sorghum must o ° o ~ INSTALLATI NS ON 3'-5' CENTERS 5Q, Mulch Mulch Hybribs be kept 10-12" max. height) ~ w ~ O.C. A ~ A Apply 4000 Mqx. .d ~ y Apply 4000 Ib/acre Straw, Anchor Straw By Tacking With Asphalt Netting Or A Mulch ~ ~ a ~ ~ Anchoring T~ FENCE STEEL ~ ~ ~ Anchorin Tc Anchoring Tool. A Disc With Blades Set Nearly Straight Can Be Used As A Mulch Tall Fescue & 70 Ibs/acre Nov.1-Jan. ~ I SUPPORT POST ~ i ~ INSTALL STAPLES STAPLES ACCORDING TO g FABR C WITH HOG WIRE BACKING ~ ~ Anchoring Tool. Ryegrain 25 Ibs/acre (Keep annuals cut NORTH AMERICAN GREEN STAPLE (TYPICAL) ~ ~ MA A Maintenance Maintenance to 10-12") 4 STAPLE PATTERN NUFACTURER S EQU L. , TYP Repair And 0 Repair And Refertilize Damaged Area's Immediately. Topdress With 54 Ib/acre Of Nitrogen Z ( ) o M ~ ~ In March. If "G' ~ r „ In March. If It Is Necessary To Extend Temporary Cover Beyond June 15, Overseed With Weeping Lovegrass 5 Ibs/acre Nov.1-Jan. - : 18 OVERLAP (TYP) 50 Ib/acre i v~ 50 Ib/acre Kobe (Piedmont And Coastal Plain) Or Korean {Mountains) Lespedeza In Late ' cuss "B" RIP-RAP ~ r~'~i February Or February Or Early March. Common Bermudagrass 8-12 Ibs/acre (hulled) April 15-June 30 15-20 Ibs/acre (unhulled) Feb. 1- March Tempora Seeding Schedule For Fall. ,t,.r v~.f~~~ti~~~~ ~ ~,ti DIMENSIONS STONE WEIGHT RANGES Ibs / ~Y,~.i,~,;~~~!~~~, ~ ~ APRON ',%'l~hJ~ %~y. Seedbed Preparation Soil Amendments p ~ ~ rr,Y NG' do (in} ado (ft} w (ft) t (in) Lo (ft) d50 (in) MIN. -MAX. 759' RANGE JOIN STRIPS BY ANCHORING J Seeding Mixture Species. Rate {Ibs/acre) ~ ~ 4" x 8" TRENCH RRA-1 18 4.5 5.5 13 10 6.0 25 - 150 50 - 100 AND OVERLAPPING AS SHOWN ANCHOR MATTING IN Tall Fescue 80 ~ N' F' 1 RRA-2 48 24 CHANNEL 21 20 9.0 35 - 160 60 - 110 6" TRENCH (TYP) NOTES: Sericeo Lespedeza ..........................20 ~ Z ~ 1.SUPPORT POST: 1.33 POUND/LINEAR FEET STEEL WITH HOG WIRE BACKING. Kobe Lespedeza ..............................10 2. FENCE FABRIC: EXTRA STRENGTH SYNTHETIC FILTER FABRIC OR PERVIOUS SHEET OF NOTE: d50 =MEDIAN STONE DIAMETER POLYPROPYLENE, NYLON, POLYESTER OR POLYETHYLENE YARN MEETING SPECIFICATIONS AS SHOWN THE STRUCTURE SHALL BE MAINTAINED AND IS TO BE INSPECTED AFTER HEAVY RAINS TO R I I C IN TABLE 6.626 OF N.C. EROSION AND SEDIMENT CONTROL PLANNING AND DESIGN MANUAL. SEE IF ANY EROSION AROUND OR BELOW THE RIP RAP HAS TAKEN PLACE OR IF STONES H Seeding Notes 3. IF FENCE FABRIC JOINTS ARE NECESSARY, SECURELY FASTEN THE FABRIC ONLY AT A SUPPORT HAVE BEEN DISLODGED. IMMEDIATELY MAKE ALL NEEDED REPAIRS TO PREVENT FURTHER DAMAGE, NO SCALE - POST WITH OVERLAP TO THE NEXT POST. (1) After Aug. 15, Use Unscarified Sericea Seed. Z 4. ANCHOR BOTTOM OF FENCE FABRIC IN TRENCH WITH BACKFILL OF COMPACTED SOIL OR P T TETI I A UL (2) Where Periodic Mowing Is Planned Or A Neat Appearance Is Desired, Omit Sericea ~ G BAFFLE GRAVEL. BAFFLE (TYP) INLET FLOW And Increase Kobe Lespedeza To 401b/acre. HEN ~ (3) To Extend Spring Seeding Dates Into June, Add 95 Ib/ocre Hulled Bermudagrass. J NCE A WEEK AND AFTER EACH NO SCALE (PIPE OUTLET TO FLAT AREA) - F EARTHEN MAINTENANCE REQUIREMENTS: INSPECT SEDIMENT FENCES AT LEAST 0 CMENT However, after Mid-april, It Is Preferable To Seed Temporary Cover. NY RE UIRED REPAIRS IMMEDIATELY. SHOULD THE FABRIC OF A SEDIMENT FENCE EMBANKMENT RAINFALL. MAKE A 0 COLLAPSE, TEAR, DECOMPOSE, OR BECOME INEFFECTIVE, REPLACE IT PROMPTLY. REMOVE SEDIMENT DEPOSITS ~ ~ ~ AS NECESSARY TO PROVIDE ADUQUATE STORAGE VOLUME FOR THE NEXT RAIN AND TO REDUCE PRESSURE INLET OUTLET Nurse Plants ~ ON THE FENCE. TAKE CARE TO AVOID UNDERMINING THE FENCE DURING CLEANOUT. REMOVE ALL FENCING MATERIALS AND UNSTABLE SEDIMENT DEPOSITS AND BRING THE AREA TO GRADE AND STABILIZE IT AFTER u Between May 1 And Aug. 15, Add 10 Ib/acre German Millet Or 15 Ib/acre Sundagrass. THE CONTRIBUTING DRAINAGE AREA HAS BEEN PROPERLY STABLIZED. ! S' CREST ~ ;T Prior To May 1 Or After Aug. 15 Add 40 Ib/acre Rye (Grain), ~ WIDTH 1; INLET ZONE 357 OF SURFACE AREA Seeding Dates W SUPPORT POST, OVERFLOW OUTLET FIRST CHAMBER Best Possible E 24" INTO SUPPORT ROPE TO BOTTOM OR SIDE. STAKE TO CLASS I RIPRAP 257 OF SURFACE AREA fall: Aug. 25 -Sept. 15 Aug. 2Q -Oct. 25 NO SCALE - WIRE TO PREVENT SUPPORT WIRE SECOND CHAMBER Late Winter. Feb. 15 -Mar, 21 Feb. 1 -Apr. 15 SAGGING 6" Dso RIP-RAP APRON (5'x10') OUTLET ZONE 257 IF SURFACE AREA Fall Is The Best For Tall Fescue And Late Winter For Lespedeza. Overseeding Of Kobe R 0 H R WATER COURSES DUE TO THE CONSTRUCTION AT SKIMMER OUTLET 15 157 OF SURFACE AREA Lespedeza Over Fall Seeded Tall Fescue Is Very Effective. PRAJECT NUMBER 1. THE CONTRACTOR SHALL TAKE ALL REASONABLE PRECAUTIONS TO AVOID THE SILTING OF STREAMS, LAKES 0 T E - r OF THIS PROJECT, RES SHALL BE INITIATED PRIOR TO THE COMMENCEMENT OF CLEARING, GRADING, EXCAVATION, OR OTHER OPERATIONS THAT WILL PICAL POND DA 2. EFFECTIVE EROSION CONTROL MEASU POND DAFFLE INSTALLATION DETAILS soli Amendments DISTURB THE NATURAL PROTECTION. COIR MESH OR SIMILAR, STAPLED OR ROSION CONTROL DETAILS SHOWN HEREIN ARE FOR THE CONTRACTOR'S REFERENCE, THE DETERMINATION OF WHICH DETAIL IS APPLICABLE AS THE WORK TRENCHED INTO BOTTOM OR SIDE 3. THEE Apply Lime And Fertilizer According To Soil tests Or Apply 4000 Ib/acre Ground DESIGNED BY PROGRESSES SHALL BE AS SHOWN ON THE PLANS OR MADE BY THE ENGINEER. MAINTENANCE REQUIREMENTS: Agricultural Limestone And 1000 Ib/acre 10-10-10 Fertilizer. JWW 4. ALL DITCHES SHALL BE STABILIZED AS SOON AS IS PRACTICABLE TO MINIMIZE EROSION. EXCELSIOR MATTING SHALL BE PLACED IN DITCHES AND OTHER AREAS THAT INSPECT BAFFLES AT LEAST ONCE A WEEK AND AFTER EACH RAINFA EXHIBIT MULCH DISPLACEMENT FROM VELOCITY SCOUR. EACH RAINFALL. MAKE ANY REQUIRED REPAIRS Mulch DRAWN BY 5. THE ANGLE FOR GRADED SLOPES AND FILLS SHALL BE NO GREATER THAN THE ANGLE THAT CAN BE RETAINED BY VEGETATIVE COVER OR OTHER ADEQUATE IMMEDIATELY. Apply 4000 Ib/acre Straw. Anchor Straw By Tacking With Asphalt Netting Or A Mulch JWW EROSION-CONTROL DEVICES OR STRUCTURES. IN ANY EVENT, SLOPES LEFT EXPOSED WiIL WITHIN 21 CALENDAR DAYS OF COMPLETION OF ANY PHASE OF GRADING BE SURE TO MAINTAIN ACCESS TO THE BAFFLES. SHOULD THE FABF 'LD THE FABRIC OF A BAFFLE COLLAPSE, TEAR, Anchoring Tool. A Disc With Blades Set Nearly Straight Can Be Used As A Mulch cHEOKED BY BE PLANTED OR OTHERWISE PROVIDED WITH TEMPORARY OR PERMANENT GROUND COVER, DEVICES, OR STRUCTURES SUFFICIENT TO RESTRAIN EROSION. DECOMPOSE, OR BECOME INEFFECTIVE, REPLACE IT PROMPTLY. 6. PROVISIONS FOR PERMANENT GROUND COVER SUFFICIENT TO RESTRAIN EROSION 1~iUST BE ACCOMPLISHED FOR ALL DISTURBED AREAS WITHIN 15 WORKING DAYS REMOVE SEDIMENT DEPOSITS WHEN IT REACHES HALF FULL TO PRO' )MPTLY. Anchoring Tool. "ULL TO PROVIDE ADEQUATE STORAGE VOLUME J OR 90 CALENDAR DAYS (WHICHEVER IS SHORTER) FOLLOWING COMPLETIONS OF CONSTRUCTION OR DEVELOPMENT. HE BAFFLES. TAKE CARE TO AVOID-DAMAGING Maintenance 7. THE CONTRACTOR SHALL MAINTAIN ALL EROSION CONTROL DEVICES IN A GOOD, WORKING STATE OF REPAIR UNTIL THEIR USE IS NO LONGER WARRANTED. AT THAT FOR THE NEXT RAIN AND TO REDUCE PRESSURE ON THE BAFFLES. TIME, THE EROSION CONTROL DEVICES SHALL BE REMOVED AND DISPOSED OF SO AS TO CAUSE NO STREAM SILTATION. THE 13AF FLES UUKINU ULEANUU I . StUIMEN I Utt' I H SHUULU NtVEK )ULU NtVt.K LAULLU HALT 1 Ht Ut5ltiNW Refurtelize In The Second Year Unless Growth Is Fully Adequate. May Be Mowed Once Or 8. WHERE CULVERT PIPES ARE TO BE INSTALLED UNDER ROADWAY, THE CONTRACTOR SHALL INSTALL THE CULVERTS AS RAPIDLY AS IS PRACTICAL, BACK FILL STRORAGE DEPTH. Twice A Year,But Mowing Is Not Necessary. Reseed, Fertilize, And Mulch Damaged Areas AS NOTED IMMEDIATELY AND RIP RAP THE UPSTREAM AND DOWNSTREAM SIDES OF THE STREAM CHANNEL. PERMANENT OUTLET PROTECTION SHALL BE PROVIDED AT ANY CULVERT AFTER THE CONTRIBUTING DRAINAGE AREA HAS BEEN PROPERLY STS 'ROPERLY STABLIZED, REMOVE ALL BAFFLE 9. THAT ALL IT PASSES DISTURBED UNDER ROAD OR DITCHES OVER IF OVER THE 3% WILL LL CULVERT BE AREA LINED Is WITH HIGH DISTURBED. VELOCITY EXCELSIOR MATTING AND PERMANENT SEEDING UNLESS OTHERWISE NOTED. MATERIALS AND UNSTABLE SEDIMENT DEPOSITS, BRING THE AREA TO THE AREA TO GRADE, AND STABILIZE IT. Immediately. DATE 10. SEE EROSION CONTROL DETAIL SHEET FOR TEMPORARY SEDIMENT TRAP SIZING AND CULVERT OUTLET STABILIZATION. Permanent Seedina OCTOBER 2009 BAFFLES Gentle Slopes, Average Soil, Low Maintenence OF 7 GENERAL EROSION CONTROL NOTES 1 J NO SCALE -