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HomeMy WebLinkAbout20001440 Ver 1_COMPLETE FILE_20020531..c- ~ x - ~ ; I 1 ~ v P C T RM .W"AT ~R , 1,~~ ~ ~ / J,... , , UBL I S O E / - MATCHLINE MATCHLINE n ~ , m I , I \ / MATC NE ~ , f ~ - ~ s # _ , I I-- I 50 NEUSE RIVER - , / ~ 1 \ 3g - - m I ~ ~ , ~ ~.4 , _ f.-.._.. ~ ~ r ~ , ~ I RIPAR B~JFFER vv - - , 1 v ~ r, I _ ~ _ ~ q I \ c: / \ 0 1 ~ v ~ ) I \ ~ / \ / z 1 ~ 3,3 ' _ ' i ~ I , ~ ~ ~ - a I \ ~ / , _ 1 \ ? m I ~ ~ 1 , ~ ~ I Y- ! ` \ ` o ~ , \v SILT n I - . FENCING ~ i` J-' 1 I I TSB _ _ - k---r---~_ ' 7 / ~ c I ~ V ~ ' ~ - - 5 - _ t~- ~ 1 I ~ ~ - ° I ` \ ~ I 1.___.. mrn n I \ i ofZO r ~ 50 CI OF \ - I I - - ~ ~ - ~ - ~ I 50 . NEUSE • R I VER , - - _ _ / I ~ ~ h I I ~ ~ 3 n~. I ~ 1 ,P I C~ STOR R ~ • ~ ~ ~ R I R I A B _-,--r - ~ , ? , .DURHAM B ,,FER 1 Y~VAGE EASE` 1 ~ ~ 1 ~ ~ I __v-- n ~ r v ~ S. 1 ~ ~ ^~..1, I , I / 1 ~ -'~T ~ r ~ I I ....12.2. r"'', ` - - - n _ U ~ ~ , _ . N I 1 1 121 ~ ~ I 1 d Z _ ~ ~ 30 I ~ a I I 1 ` I I ` ~ Z r t 1 > ~ ~ N , \ \ ,1 ~ ~ N i / \ \ \ \ -1 j. ~ \ ~ r~. rrt- \ . _ i ~ ` ~ . I I Q . ~a I 0 1 ~ i I V ~ _ - i ~ ~ SILT 1 ~ I , W ~ _ - ' ~....F E C.I#G. _ ~ , ~ \ I I I W 0 I- - - ~ , , 1 ~ cc oc _ \ , I I c~- - (TYP.) ~ TSB 1 ~ - I W a 0 TEMPORARY _ , , : ~ ' 3 3 , ~ ~ ` 1 \ I I Z ODZN 1 . - ~ _ ~-~3 - TSB 7 { , _ Q, 119 ~ ,r,` 1 I olvERSION 6 (SEA SHT I ~ , I ~ .m L I'. ~ - ~ _ _ DIT TYP) N . W~ ~ y y.- - i cJ, r ~ `v I I ~ r W I ~ ~ - ~ ~ ur oG n I \ ~ , i 1 s I --I r r ~ ` ~ ~ I r I ~ ~ ? ~ Z W ~ os• I m , ~ - x l'til .I ' ~ ~J i I / W ' ~ ~ - ,f 118 ~ ~ ~ - - , , , . , . , , , 3 PI4, 1. - ~ _ EMPOR~ki~Y ~ ~ ~ I • ~ ~ r , ~ r, ~ ~ 3 I V - - ? v I I I ~2 7, ' DIVERSI'QN' \ , ~ 1 r .,,y`Ifi ~ ~ I , v 1 \ ` \ , r , ~ . _ _ - ~ ~ 1 72 7.1 70. 69-- 8._ . N ~,_~~.1~ ~ • ~ /I , .N o ~ , I ~ GN~tD ~ ~ ~ ~ ~ I ~ ; ~ I t t ~ q~rOr oc ~ i ~ ~ I ~ I , ~ ;I ..p~' ~ 1 , ~ ~ I oC r r... T ~ - ~ I \ ~ I ~ ~ / ' t , 1 i ( ~ 1 ~ ~ J~~a I I C I J- r ~i ~ I ~ , ~ I ~ ~ _ ~ o~ 117 3 ~ 1 1. , s ? O i i i v ti , ~ , I I i ~ 1 O Z i ~ I ;rt1. I i 1 ~ 1 1I N aW 411 i i / \ \ 1 Z 1 } ~ I ~ ~ ~ ~ 1' ~ ~ ' , I 137 I~~ t H Y+ ZOZ ~ ~ ~ c'~ 1 I V J ~j i ~ us ~~~.o 1 I i 1- ( ~0~0 ~ .y ~ 1 124 ~ ~ I < 1 i t U' , ~ I~ Ll~ ~ V ~ I - _ . r ND WALL i I I ~ m J J 5 ~ _ ' - - - ~ - - ~ I .I r W UJ EL 326.0 ~ I ~ , I. z m n H r F- I 116 ~ ~ 1 ~ ' II W Q 125- a _ I F OX r, --7_ ~ . . . 11 X60"";"./, I n 2 , ,,cc~~ ~ ~ I ,I~ Q F I > OX V 64 , r. , , r - ~ z > ~ v v 1 1 0` W~~ D~E 1 i I~ .1 7 `'I' ~ \ ~ , 1 1 I ~ ~ 'WAG = 332. - ' - ~ z I - I , ~ 1 a~ - - _ J f i 1 I `a-•-- - 'WAG = 326. i I r r. I ~ ~ ~i ~ - - - ~ AN. SEWER PASEC~E + i I' I w~' , ~ ~ 63 M~ I ~ / - I ~I. I 0 ~ ~ I ?n ~ ' ! s ' l c `ems ---,1 1 ~ I V ° TEMPORARY CONSTRUCTION I r I r ) ~ 1 , r- \ --1 ~ r-~--z- 1 f, .,_.:_;_,1; ,.'r _r_~. J_.~ I , , n I r ~ I ~ 1 ~`a~ II 1 I ~ 1 j; ' 4 III ~ I ~1 I r I } I, I! I ~Itl EASEMENT TO BE PROVIDE I 1 I 1 I r 1 INLET; P~t k~ 'I(k,N, rl ' II' ~ r' ~ ~ ~ ' 1 ~ ' 1 ~ \w ~ ~ II 1 I 35 ~ 1 z I I ~ ~ W + ~ I I I i ' I { ~ . 1 FOR REQUIRED GRADING Q I t: I I ~ I 4 EVIQ I( ~(bb I 'I I u I' _-r-~--~ _ ~ I ~ -J ~ I I I ~ t V 4 Q ! 1 i ~ 11 ~I 1 ~ 1a. - - -----1 -f'---- - o / 1---r- ~ I I I h I~ I' I i ~ I 'l l; i 1 1 6 ~ 1 I, I i 1 I r , 1 TW 330.0 1 - " LL ~ I = - BW = 325.5 `I ~ I ~ ~ ~ 1rJ' ~ 1. ~ ~ a4! Mi r f ~ h ) I; 1 ~ f t I I 1 P 1 1~ I I I ~ L ~ _J_._ I I± I .I I j h ' I 1 i I II I` I' 1 1 I + I' I ~ 1 ~ Q I l%~ I I I I I. ~ I 1 i~ l 1 H I` I~,11. 1 I 'I ~ ~'l i I I 1 I n i ~j' _ 'd I I I I 11 9 6 1~'.3~0~ 1 I 1: '1 I, ~ I 1' ,I ' I I , I I cD I - + I 1 I 13 B I'. 1 3 I 13 4. I r~ I I I I + , I 1 135 I I c i ~ I I 1 27 I 1 28 I I i 1 1 I ~ ; , it , L. \ ; ~ b I i ; ; - I ,..37. 25 I 1 ~4 'I i6'. I I ~ I ~I , I I ~ I I ~ VE R I i I I I~ I I I 1 ~ I ~I l i l 1. I! { I ~ \ I W I C I 1 ICj I A. r - _ I D 0 ~ ~ I 1 ~ I w( I ~ I I I q - _ _ T5~.~ I , I I AG 336 ~9 ~ _ )r I - I _ _ N N / o i , - t l c ~ , / -7---{- ~ , f: ~ ~ ~ ~ WAG = 334~I , w - I ° SILT ~ ) ' ) ~ \ ~ ~ - ~ I / I 1 i t I P'f N ~ F N NG / / { E C I I 1 1 1 `i ~ i~ I 1 ~ ~ I 3 A I TYP.) ~ ~ 1 1 g' ~ I I 1 ~ ~ ~ , ~ , - 23.. ----I- ~ - _ BR I 2 ~1 I, ~ - ~ ~ ~ D ° N p I. ~ . , i- I~~s--r, I--..,.._.,r, ' I?-__~_ ...~--1 ' ~ ? - I ~ i i I 1 ~ ? 2 p L ND WALL ~ _ I W 1 ` - Z ~ I I I ~ ~ I I 1 I I 4 ( ~ j ,r Ir -1-- i ~ -+--+--n I--r---~ !r__=;y1--- ? I I „ + r` 380 I I , 1 I' 1 I I' I I I II ; ~ ' - ' L = 334.0 ~ ~ r 3 Q ~ I 1 y , ' d I I + ~ I I! , , , I I I I I i' p I ~ i I ~ I I, I 1 i ~ I I ~ I' ' ,.i - ~ , 1 ~ ~ ~ r I, , 1 I . I, I I I I I I I I 1 ~ 1~~ I 1 I- 1 i. _ I I 1 D/ i 1/ ~ I 1 I, i, ~ 1 1 I, J 1 i o I I, I I ~ 1 I C ;'I I/ t + I I I I I, 11 / ~ I 1' V I i 1 I I/ I I I I I ~ ' ~ ~ ~ 55- ~I 5~ 5~ o 5.8 _ - 1 a I I 1 I I I , I I ,I I I + I~ I I I I~ I ~ + 11 I .I'11~)'I I ( _ 1 ~ F- , L, , /I I I I li I I , ~ , , I ) i 2 L I 1 1-11' I 1 11- kJ~ 1 - I I I ~ I: 11 I I I / , u I I X09 r 108, 1 I 1 I a I I I - ,10 7 I 1:10;6 I 1 I,Y + I 1 1 1; 051 I 0:4 1 1 i i; I I 1 , 1 0~ I 11 '~2 I I I I I , I 11? I 1 01 ~ \ . , I r:...C. .T: r~ I N yl Z I I i 1 ;1 1 I I' I+ I I _ ` i \ I I I - ~ ~ fir- I F. - q 0,+ ~ I ~ I I I I JI I-- 1 1 I i I/ ~ I; 'I 'l l 'I I! r I I; ! j I 11 1 I I - „i I-••- c__ I I I 'I 131Ip/ ~ I , ~ I I I, I {I I+ 1 1. 1 i (n 1 1 ~ ( ~ ~ 2 0 I r 41 i } 3 _ - ,3qa I' - _ _ ~ _ c7 - 1 I/ 1 I I / Gl / - r - , ' ~ ~ , w ° _ _ _ I I ~ „ti_ 1 - r ~ ` ~ ~ \ 3 , , I W ~ SZ 0 I / ~ \ ~ 1 Jr/ - ~ - 41 U) 1 / / - u I TEMPORARY { _ + DIVERSION n - - _ h, ~ - I I i _ , I DITCH (TYP.) , ~ ,r I ,,,,F_ ~ ~ ° PORA Y DIMENT BASIN NO.1 TEMPORARY SEDIMENT BASIN N0.3 TEMPORARY SEDIMENT BASIN N0.5 TEMPORARY SEDIMENT BASIN N0.7 _ _ _ _ , TE~I R SE 4 I 9 I a~~ '1 ~ B INN , 2 W/TEMP GRAVEL & RIP RAP FILTER BASIN ' ~ , 1 ~ 1 g I N C STOM BASIN (GRAVEL & RIP RAP FILTER BASIN) (DETENTION AS 0 ( ) ~ll ) w p 52 ~ 51 5~0 q 1 ~ ,Isl. - I ~ I ~ ~ q R X17 1-- ~ ~ DF~AINAGE AREA = 6,6 AG. DRAINAGE AREA = 3.3 AC. CMP RISER -SEE SHT. C3,5) DRAINAGE AREA = 1,8 AC. ~ 1 N I ~ ~ 45. I I D~iNUDED AREA = 2.4 AC. DENUDED AREA = 3.3 AC. DRAINAGE AREA = 15.6 AC. DENUDED AREA = 1,8 AC. J 1 -,t ~~SB- r 17~ I z i I , , ~ I - v,i- I I 1 I I 4 R QUIRED VOLUME = 11880 CF REQUIRED VOLUME = 5,940 CF DENUDED AREA = 7.4 AC. REQUIRED VOLUME = 3,240 F n ~T I : I ~y. I ~ T[r p A Y -r- _T..._._ !L ? V LUME PROVIDED = 12168 CF VOLUME PROVIDED = 6,144 CF REQUIRED VOLUME = 28,080 CF VOLUME PROVIDED = 3,456 CF Q - i" ~ ~ I ~ ; I N ~ ; ' I ~ I X61 I o 0 I. f Y ~ 16 I ' - V L ME PROVIDED = 78 300 CF BASIN SIZE = 24'x48' x4' DEEP B SIN SIZE = 39 x78 x5 DEEP BASIN SIZE - 32 x64 x4 DEEP 0 U L N TH = 2 ' WEIR LENGTH = 12' WEIR LENGTH = 10 , 4 --d i I ~ I i l ~ t,? f o WEIR LENG 0 ~ w _ - ~ . 34 ~~~I ~ r ~ TEE P'ROT6'Cif ION r ~ .Z , I ~ W Z ~ ~ I ~y F ~NCII~G I ~ _ t; + ~ n I T~'MPORARY SEDIMENT BASIN N0.2 TEMPORARY SEDIMENT BASIN N0.4 TEMPORARY SEDIMENT BASIN N0.6 I ~ ~ ~6 ~ , ~ I I ~ 0 t, ~ " ~ 1 i . - ~ - ~ , ~ ~ I ~ I ' I CUSTOM BASIN D NTI N BASIN N0.1 W/T'EMP ~ G~USTOM BASIN) ( ) (ETE 0 ( n _ DRAINAGE AREA = 6.6 AC. CMP RISER -SEE SHT. C3.4) ~ C D~AINAGE AREA - 5.0 AC. `4 i ~ ~ ! ~ -t--I--~-----'t-- ! i I I ~ 1 ~ ~ I ~ ° I = DENUDED AREA = 2.8 AC. DRAINAGE AREA = 8.4 AC. , D LAUDED AREA 4.3 AC. - ~ TREE PROTECTION ' It I c ~ i ~ ~ C c' R QUIRED VOLUME = 9 ~0 CF REQUIRED VOLUME = 11,880 CF DENUDED AREA = 7.5 AC. I ` FENCING B ~ o V LUME PROVIDED = 9,248 CF VOLUME PROVIDED = 12,168 CF REQUIRED VOLUME = 15,120 CF Q _ BASIN SIZE = 39'x78' x5' DEEP VOLUME PROVIDED = 32,600 CF BASIN SIZE - 34 x68 x5 DEEP ' ~ ~ ~ ' ~ ~ ti;' , I ' E1' P OTEC~~r I ©N ' PH SE', I ~,CLEA ~ N ~ ' ' ~ I , , i , ~ ~ , ~ ~ 1 ~ ' I ~ ~ D VI¢E T!lP.' ~ I LI iT~ , I 1 d -a ° WEIR LENGTH = 20' I 1+~EIR LENGTH = 20 I 4 . a~ , ~ 1 m ~ , ~ o I, Q o ~ ; CITY Of DURHAM 65' LONG X 50' wtOE X 6" DEEP , ~ , ~'~,zt I ,~;i ' ~ I 1 g f "F W ~ ~ ~ I 1"9~ I y.% , i In i I 1 , + PPUBLIC WORKS DEPARTMENT TEMP. GRAVEL CONSTRUCTION - APPROVED ENTRANCE r . p ~ ~ , I N r I 1 ~,1Q.11 - ,5 t t , I J.. - , I , CARS • ~ ~ \ I I I ? \ ~N.a.~~C a' RCP INV. t ENGINEERING DATE - - - - , ~ o, F~ss~o .,ti ~ o - -1 I ? y ~ INV.=345. T5 ' T RM wAT R GATE \ , SO E I ~ ~ I t ROCK CHECK TRANSPORTATION DATE ~n ~ DATE v~ , 4 , i 1 i 1, ~ I I - ' t 1 ~ rr1 ~ ? ~ yy ti / - - - \ _ ~ DATE _ ~ ~ h ~I w A.. L `i ~ ~ I~ I I ~ Ii ' ! I~ ~I•- n1 fi V 1t'. ~ ~ ROCK C ECK ''7 GZ t~ J 'VV Vv - - - - INTALL,,4 L~' - 164ltP ii 7l;, DAM (DA .0.2 AC) w TO EXTEND.EX. CULVERT- ' s _7- t RCP IN V, _ Ll. _ W_.._ ti ---ter- II ~ ` - W _ _ liFi _ _ _ - - _ _ _ a) t- - _ I- ------.r-------.--..._..--._...---___..-_ \ - 7--- - - r • • 5"CaiE-JNFEET"------ ' W r.._.,_.-___.._ _ p lo 18" f N RCP INV. INV.=345,37 t!} 0 2s IPUBL`56.`.-__--goo-----..,..~..._._._..~so,n s r, 8S\6f4ft66O\1493 1.!)G i - -,F - - i U ~ I i ~ ~ I i I ~ ; ~i 1 ~ rr ~ - ~ _'s+..-: ~!„p r I I ' l y 1 1 I 1 , I, A .i / ~ ~ _ "r' I I I 1 I I I 1 1 1 A l I I I I I I i i 0 1 / rrr J I 1} i t 1 V . 1 V~`:~ ~ - I I , 1' ,'J / 1 I t 1 \ ~I',1!~iill i,, 1~,. - t3 ~ 1 i , ~ ' V ~ r ~I I ~ ! I I 1 1' ~ 11: 1I ~f 1 1 I 1 , 1 ' 1 1 ~ 5 N ,I ~ I t 4 1 ~ i i I i Imo- O ! I I ~I I 1 11 1 ~ C ~ O ' q• \ phi l / ~ I l r I,^/ f f, r I ~ 1 I~ 1 i ~ r ~ I ~ I I I I I I ~I~~ ~ „ir ( 1 j 1V1 t,~A } 4~ 1 I I I ~ ~ I ~ I I v ~ ! 1 1 1 1 I \ r/ V' ~w 2?,~, 222 ~ i / ,IN RM TAT + ~ I i -J ~ ~IS`TRE r I rf i!f Q ti , r "T I Y 1 i ~ ~ ' V ~..-..ICI i ' ~',A',AAb~ /i - L' I ~ r ~ ~I I ~ ~ A "i~/~1 / i i~' I 1 1 17 I ! I I ~A~,Av~ ~ < - - b 1 } ~ ~ ~ 1~~ V A r 'l Xr I r r I 1 i 1 r I ~ ~ Jr, ~ ~ , _ _ - r1; ~ LE S HAN 251AC , + I f ~ ~ - ' _ - ~ DRrAIN GEAR IIr I ; ~ + I ~ v ~ i i II ~ ' ~ / i y;~ SILT FENCING SHALL 8E I I I li J~ ~ / ' ; r,~ / / - - ° 1 f I ~ I I ' I I r r' l 1111 I ~ - I ? ; III . t r x ~ ~I ~ ~ , R~-INSTALLED AT END OF ~ ~ ' % , i % + ~ ~ z 1 ~ v + ~ ' 1 I ~ 1 ' I / I I I ~ , h r / / ~lul,l ~ ~ : f ~ ~ . , \ ~ I I ~ I ~1 I ' I , 1 ' ~ I ~ ? ' EACH SHIFT F W RK AN ' ' ; ' .III > ; , . ~r-~~~„ i~ ~ i' i t i i l, l 11 I f 1 1 l l 1~ I - i~ ~ 1 / i t I r 1 I /I 1 y t ~ } ~ I , / ! ( '~1! ~ D I I ' 'III, 1 1 1 v l~~ .1~~ . 1 I , 1 \ 1 } ~ ~ / I I , 1 I " I ~ 1 11 \ ~ 1 I 1 J BEFaRE RAINFALL EVENTS I I I, ; , 1 q,l., , , 1 1 1 ' . ~ m 1 I 1 t J/ ~ A? STREAhA CRgSSING. I ,I I Iilr/ , / I,IIr 1 } I ' I I ~ i , , l ! 1 I!, 11 , l i p i I t If I ' ~ I / / l I J ~ I \ LL ,r11 I ~ U'~ / , / -~y f ;r1 , , , I ' ~ ~ :MATCH ~E , ~ , : I MATCHLIN , l , ! I , 1 i ~ 1 / I 17 ' 1 i I I. w , I ! I I. i i + ~ / / ! 1 ~ II I 1 I ~ ~ ~ ~ I m t ..-fi'~'~ ~ r EXIST 8 I I I 1, r 1 I r \ / ~ w r ! ~ / - ! I ,rrr. , I ! 1 r~ / , I I I I r I ~ ~ ! r y I I I I Ll.l o r / , .J_ ({~~/'bIP W~,TER LINE I r . ; r v ~ , r~ 1 / t I~ tA~ ~ e}~.-r. I I t 1; 1 Q"/„r r 1 I I I~~ ~ I ! I ! r ' ' J ' r i I ~ ~ ~ i' i' ~ / 1, , I I I I I I . , , _ ~ ~ ~ i I j I I I I I ~ z ~ o I ~ SC..~__ r~ I 1 I i ! I , I / ¢ L 1 - I r r r~ , ti~ 0 I I I C~ - / , I I -r~ I I r 1 a , , I t I , I ~r r r. r~ o t ! / r ~ 'l r I L..~.. I .3w.~X.Lr1T a S. . / ' l,rr rl I ' ' I I ~ r r O r , r ~ I 1 / ~ /I r r I LI~ r I, r( I I I'~ I I i ^ / / ~ / I ~ I I ~ I I Y I. 0 I Z f I I J Q-N J ~ / r / `/err - - i I'--- - , .J,/ I I Il,' ~ r f r / ~ ...,SILT ..J _ _ i r~ ~ , a , ,r I I ~ / 'a /r z= =tiJ - / rJl ` ; r J4 i ! r i ' + ~ ~Y r ~ r' ~ - I t ! ~ I f / ! I _ / ~ / r , 1 4r , I 1 ~ ~ r~ 1 / , Z ~ r , ~ ~ / i n r ~ ~ / , ! liTi'P. ? ~ , I/ ~ r , ; / I I J i ! ' I CHIT Hi, f T~Pi r~~ / / / ! r I i i / , ~ / ! I n r , r I i 1 / ~ . , 11 , f , m I I I r i r I L_ i rl. I I II ~ I~ ~ I v r t~ t r! I I i _ ,ll , I r 4f I r f ~ 1 'v 1 r ~ 1 l l ' f ~i i lr r r ` I N I ~ ~ Z I r . I I ~ I / ~ ~ ~ ~ / ~ 50 CITr OF ~ m i I I rr 1 ,'mot ~ I I r ~I I' i! I r v I I ! l r' , l I r i , ! , 1 i~ ~ , , 1 r ~ " , r I , 1 f; I 1 t I 'r ! ~ r ~ ! I r' 1 / ' /r r ! , n,` ~ FE ~ n 0 ~ , f , , ~ DURHAM (ll1F R ~ N m I ~ I ~ 1 • I i I I~ ~ i r i~ I r r y ~ I r I~ v f - I I I ! i I ;~r. , r ~ /I r r ~ / ~ ~ ' !r / 1 r ` i ~ 1 f/ ` N 4 / I r ~ - 0 ~7 I ~ ; I I i I ! , I I I I I I I I t'~ ~ / I I , ~ ~ 1 ~ ~ I ~ I r I I~ ' I I I I I 1 I I~ r .!„i ~ f / / ~ ,q„ ' L% y I ~ i z ~ 2 ~ f I ~ ~ 1 W ~ s -t rf ~ R i~' i i I i r' r~\ ~ I I 8 W ~ ~ r / ~ n• 1 1 1 ,1 I I 1 r t Ir ! / / r ~ r ~ f -=~E ARY CLASS B I I I I 11 t' I r f r r _ ! I 1 '1 ~1 1 n, r' r r r r , ! II 0 J ! ~ I 1 r I ~ ~ 7 r ~ f r y ~ I I W Q I M , , I ~ Z ~ P~ S7REAM _ _ . I ! I !'1 I 1 i c ! ' / , CROSS © EACH r r I t i t ' J I I I , t' ' ~ I Z 1 . I ! I 1 ~7 r c' ' ~ S I n E~ F C I N G 1 ' ' I ~ ~ 1 I I 1 1/ I i 1~ c'+ I;~ I I / - ! J ,r i I I r l/ 1 'I ~ I I 1 1 ~ I I xill I I I r ~,-wd 0 1 ~ ~ - I ~ ( ~ I I I `.I ~1 l 1 ~I ~ I I ~ I~ r r~ , I 1. ~ ~ ~~cn A ~ i I' I~ i I i i , 1 ,P t I I I i ll / i l i l I i i I•.! i I~ y 1 Z..~.+ ' I ' ~Ol * I f/ r , I 1V I I 1 I~ ~ } I n r I' . ,Ir ~ i 50' X25' X6°TEMP. y I ~ , I ~y ,/I ~ ',J1;?I;I, I'I II I ~ ! i ~ I , I v 1 ~ .t I ~ = g 0 J I 1 ~ W WETLANDS I I 4 ~ V i^ r I I ~ W~ w r J r' I GRAVEL CONS~UCT I ON r. l 1 1 1 11 I j I~ I i i I ! I I I ~ 1 ' / ' 1 ~ I I i ; ' ' ' ~ I _ ENtRANCE. r~ I I , I 1 ~ 1' ~ I ~ ~ ~ I ~ ~ ' I J 1 ~ r ~ I ~ \ ~ ` ~ 1 ~y.K / ~ LL . W L l r"1 f r \I ~ I I / ~ I ; 1 1 I I I I ~ 4 I I ~I I I I~! I 1 1 1 ~ I 1 I ~ ~r ! ' pN~© " / / ~ ~ (6 / ~ , I r l~ l I I 1, ~I~~' I I v I I I I , p I , I W ~ ANDS', a oM ~ I ~ ~ r r / I I ~ ( 1 1 A I I I / I r I I 'I I , I I I ~ ~ I I , ~ ~ / I r ~ ~ ~+i - ~ ~ I ~ i / / 1 ~ ~ I(fJn t i I I ~ I l~ I ~I/ I I ~ I ~I I I I I 1 1- r ~ I ' ~ ~ i I ~ 1 I I ,I 15,1^', \ ~ ~ ! / ~ ...Q ~ ~ ~ ~ I I I i ~ ! ~ .J ~ rr t MA CNLINE I I I I , , , ~ , r I~ ~ ~ ' 1 ,I ~ ~ ~ >''J I . I I I 1 ' I + ~ 1 • ,I I v , ~ ~ ~ p I ~ c ~ 11 1 1 I I ~I I } , r i I i ~ / / o , I ~ 0. I ~ , ' I ~~p. 1, ,I, 1' . i ; , ~ - ~ az~z I ~ i , r ~ l ' 1 r / ; ~ QJQ I I , ! r ~ 'A o r ' r r r ! I I i i' I, I.S' , ' I ~ V . \ ~ ' I , , f , ; / / / ~ i ~ I r I / / V/ v w ~ 1 I I I , / W0.~tl. p r I I ~ 1~ 1'.•` , / m r I ! t I 11 .I ,I ~ ~ ~ 1 r 1 r / r , / / r ! , i I I 11 ~ ~ 1 ~ ! , I r 1 ' ~ M ~ W W ~ I / f 1 1i~1 ~ h M~ F• o , / / ' / ' , I , / ~ I v~' 'I I I , 1 ~ ~ ~ ~ I ~ ; TEMPORARY SEDIMENT BASIN N0.1 • ~ i + i I ' ~ ~ ~ r ~ ~ ~ ~ ~ . ~ / ! / / ~ / r~ ; I ~ ~ ~ , 1 / / , / , I ~ t v ~ ~ ~ 'I I ~ I , ' ~ / CUSTOM BASI ' ' I ~ I I i f / ( ~ t~ DRAINAGE AREA = 6.6 AC. ' r rr / ~ , / / i 1 1 ~ A ~ ' rn ~ ~ r r , ' ~ ; DENUDED AREA = 7.4 AC. , r \ \ o ~ 1 / ~ / / / / ~ ~1 ~ ~ ` ~ I , ~ , REQUIRED VOLUME = 11,880 CF ~ t 1 , I ~ , ~ a / / / r I / ~ r / ~ / i l 1 I : ~ ~ ~ I , ~ ~ / / ; 'Q 4~ f ~ / / VOLUME PROVIDED 1 16 F ~ i I i i 8 C c.0 _ . _ I I r rr / , /I / i / i / /I / / I 1 I ~ ~ ~I 1 1 \ ~ , , , r ~ ~ BASIN SIZE - 39 x78 x5 DEEP ~ ~ ~ r ' ~ /r /r / , / / ~ / r' / I ! , t 1 > r I I ~ r r v~ I / / r ~ I r , , i 1 ~ ~ / ' / / ~ ! I I, f i f ~ (v ~ f ~ I , ~ , , / ; ' ~ , / WEIR LENGTH = 20 / r i 1 1 ~ ; r , I / / r / ~ i ' I ~i ~ ~ ~ ~ r i ~ ~ ~ ~ ~ w ( v I I I ~ , I ! ~ f~ 1 r r i ~ / , i ~ ~ ~ , r ~ 1 i i I r ' I ' r ; , I f I I ~ r , r~ r ; , ~ ~ l TEMPORARY SEDIMENT BASIN N0.2 ~ ~ ~ Q ~I ~ I ! ~ r ,1; i ~ / ~ ~ ~ i r r , / ! i ~ ~ / / / 1 I ! I ~ ~ , . ; / ~ . / (CUSTOM BASIN) LL ~ z ~ ! I r , , i ~ , DRAINAGE AREA ~.0 AC. ~ z r 1 ' ri / Wes.. f r t r I I / a ' , ; DENUDED AREA 4.3 AC. W I _ "J / Q, I Tr y t. .I" 1 / r rr , 6 / / //ar r/ r J'C AR 1 / ' r r , ' , 1' ~ ; , , REQUIRED WOLUME * 9,000 CF ~ ~ 1 I ~ v I I ~ ' r'~ i'" r r ~ r ` ' ' i , D"ITCH'( YP./1 ! ~ ~ oc 1 1 ! ~ ~ s '~..J G / VOLUME PROVIDED 9,248 CF ~ ~ a i I r , - I ~ ~ / r C ~ V I 1y-' / ~ rY- r~ "J , ~ I I I , I /r l l - / ~ ~ ~ I ~ ~ I , ~ / BASIN SIZE = 34 x68 x5 DEEP ~ ~ ~ ~ 1 ~ f 1 / t Jr r j I I I, I- - I C11 r / / ! I I ! ~ ! J n-- q - N ` / , ~ ~ I , ' WE{R LENGTH 20 I ~ J / } I I I , , ~ w f i 1. r , 1 ~ ! I i / I I I 1 r I i I I I / / / ~ Q r ! !I i I ~ 1 r/ I I I I I I I 1 I 'I / /l l i ~ / / ~ / , TREE/PROTECTION ~ ~ ' ' 1 ~ - ~ ~ , , / TEMPORARY SEDIMENT BASIN N0.3 I / ~ / I" ~ , , , 1 I , (GRAVEL & RIP RAP FILTER BASIN) , / - ~ ~ ! / r _ _ rr I I ! I I I 1~ I li I 1 - f I /r / l / ~ / / / / N ; ~ ~ - / ; ~ DRAINAGE AREA = 3.3 AC. ~ ~ ~ ! / .i"" r I ~ , / r / I I I I 1 ~ ~ i i I i 1 I ` ~ I / JJ / - ~ r / - , / i I I ! 1 I 1 I . ~ i / / / , ~ ~ I DEN DED AR ~ ~ ~ -„T J fr I -a/ ' / / , I , 1 I I I I I 1 ;Icy ! . / o , L rr ~ i- , , I ~ I ! i rr / , / 1 t ( I I I 1 I 1 -..I!`7 r' r I iii / ~ , U EA ~.3 AC. m Lr. , "r ~ - /l / ~ I i I \I I ~ I 1 '1 I I V f I I I _ ' , REQUIRED VOLUME = 5,940 CF ~ ~ ~ ' ~ Q Al I" - / 1 i I I ( I I I =`~I ' ~ VOLUME PROVIDED 6144 CF ~ J r/ ~1.! / ~ I i ! j~ \ 1 I I t A I- I~ I I I I p r / 1 r ~ r ~ I. ~ ~ , I ~ I ; , - ~ ~ BASIN SIZE 32 x54 x4 DEEP c W ~ C9 r' ~ ~ rr ; 1 ~r! ' ! I f r r ! ~ r 1 I~` t I I' 1 I I I I ~ / r ~ ~ rr r' ! ~ i' I t ~ ~ ~'l~ / ! I ! I V ~ I i I I I I I , / WEIR LENGTH 12 I 0 I ~ / / / ~ L~ ro - r ~ / r / ~ , / rr / / , I ( ~ I I I ~ rr r ~ r - / - r r / - i ' 1 I , A I I i I I I I I r r r / i' / ! d~r~r r I 1 ~ ~ 1 ) , V I i I I I ~ I I 11 1 I I y, Z I I I I I I~ 1 / ~ rr - ~ Jr / ~ / I ~r l , I I ~ V l I I I ' I I I ~ - y yr r' r l mar,/ ~ /r ~ r r I 1 1 1 ~ A I`. 1 % i I I I r . , , TEMPORARY SEDIMENT ~1SIN N0.4 ~ I , I , ,n ~ ~r r / / / I A V i I I t o---- rr r 1 r .r / f r I 1 \ ~ I I I I I 1 171 I ' ~ ' ; ~ (CUSTOM BASIN Q ~ 0 I ,~f, ~ `'~GtJ I ' , I ~ , ; DRAINAGE AREA = 6.6 AC. ~ ~ ~ I I I I I I , ~ _ ~ ~ rr ~ ~ A J ~ ~ J 4 ~ I If I I I I I I I ~9 - - r ~ r r / ~ ' r / ! li - I I ~ I 1 / J / r l - - - T I ~ f , ~ ~ I ~ I ~ . I ' r ~ DENUDED AREA = 28 AC. ~ I I I ~ , , 1 , / ~ _ , , i' ' ~ /r rr , J / ' ~ r' 1 1 / l J - ~ t- I - ! i I ' ' I I d REQUIRED VOLUME 11,880 CF - I- _ rrr r I / , `ti` , / ~ -a__ r I I ' / . III ; ; VOLUME PROVIDED = 12,168 CF q y BASIN SIZE = 39 x7 x5 DEEP a ~ m GC ~ ~ SILT ~ , ~ " ~ ~ WEIR LENGTH = 20 o b ~ r ~ r ~y r / / / i i 7 J / r / r / ~ / ' ~ / i / % ~ , r',' FENC I , (TYP ' I / s/"J r ,i / / / , r / , I , ~ ; TEMPORARY SEDIMENT BASIN N0.5 , - r r / rr, / / / (DETENTION BASIN N0.2 1WTEMP ; U 0 ! J ' ,1 / / / / / % CMP RISER -SEE SHT. C3,5 , ) - DRAINAGE AREA = 15.6 AC. ~ / ~ / 1 r ~ 'I t~ /r / I / r / r - r r ~ --~--1_ 1 S0' NEUSE RIVER a ~ ~ RIPARIAN BUFFER DENUDED AREA 7.4 AC. ' Z / REQUIRED VOLUME = 28,080 CF f ' VOLUME PROVIDED 78,300 CF LL ,r r / ~ .1 r / -~Lr r / / / / / / ~ ~ / r /i' / ~ ~ ~ ~ .y ~ , ~ r l ~ i - ~ ~ 4 0 _ / ' % ar: / TEMPORARY SEDIMENT BASIN NO.6 ' / ~ ' / / DETENTION BASIN N0.1 W/TEMP ~ ~ N r ( ~ ~ w z 1 ~i r 's' r ~ L ~ - ~ rr / V~ ~ /1 r / i .~1._ .~'r Y' rr r/! I' i / CMP RISER -SEE SHT. C3.4} ~ ~ ~ r r / A l r / ~ r ' / "S / DRAINAGE AREA = 8.4 AC. ~ ~ i ~ , . ,,.r," / ~ / r r s~, / I a, .rte"- / / r ~ / / DENUDED AREA = 1~.5 AC. r ~ / r / r' ~ / ~ r~ / ~ , k I REQUIRED VOLUME ~ 15,120 CF ~ t . r / ~ / '1111 / ~ , \ ~ / / r / / / , ' r r / r I '/~J i' 1I ~ ' VOLUME PROVIDED = 32,600 CF g r / I rrl , / ! / i / 0 TEMPORARY SEDIMENT BASIN N0.7 U ~ l ~ / ~ r r / / ~ 1 i ~ ; ~ / ~ ~ GRAVEL & RIP RAP FILTER BASIN ( ) ~ C 11 r/ ' I ~ rr /J r~ I / , , / i ( I ~ /ri I - ~ r. r ~ ~Y! / r / l~ / J I i / I r , / - , , a z ~ ~ DRAINAGE AREA 1.8 AC. ac Q ~ (Z ' 1 / / ' ~ J / / ~ , 1 ~ V ~ / ' / / ~ r~ / o'' / / i / i I I l_ DENUDED AREA 1.8 AC. a ~ ~ + 1 r r'/ / l / ~ 4 ~ / r / r I I REQUIRED VOLUME = 3,240 CF ~ ~ ~ \ r . '/r / ~ r p -y it / I 'I/ VOLUME PROVIDED 3,456 CF LO ~ Z BASIN SIZE = 24' x48' x4' DEEP 4 'J 'r I ~ . 1 r/ i rr / ~ / l Q,, / / ~ err r _.F.i/ f`, /l~ ~ WEIR LENGTH = 10' ~ 0,00 TRANSITIONAL CITY OF DURHAM Q 1 / / / / , - I 50,00 TRANSIT r'~j ' ~ ~ , , , / ~ / J /y USE AREA SE AREA PPUBIIC MORKS DEPARTMENT U / , ~ r ~ r I I/ ~ / I i J k' APPROVED ~ ~ , ' ~•p~uenh~~ ~ ~ w ~ run.urrn.un f1I T[ I ~ CARn~ ~ LNUAMLLRIRV STORM WATER DATE 1/ .01 TRANSPORTATION DATE SEMI s J e . r ~ .I DATE W ; r > W / , Of I I DATE % W O.,FM 0 Q / c [NL T ECTION \ / W / / \ h5 /i r (k / 1 ' I 1 i N - „ J a m W SCALE IN FEET j 0 ' ~Md cf: " C p111~1111 MATC 1 \ / r i :HLINE N - _ . zl~ 0 25 0 100 150 200 d Z iAM STD.) 64. CURB INLET (DURHAM STD) ~ 7A. CURB INLET (DURHAM STD) 17. CURB INLh? (DURHAM STD.) Z4A• CURB INLET (DURHAM STD.) 3~. GRATE INLET (DURHAM STD.) AC. D.A. = 0.19 AC. D.A. = 0.71 AC. D.A. = 0.70 AC. D.A. ~ 0.52 AC. D.A. = 0.42 AC. C O.SO C = 0.60 C ~ ~•~S C = 0.35 110 ~ 7.22 IWHR I10 7.22 IIWHR 110 ~ 7.22 IIWNR Q10 0.6 CFS HO 7.Z2 IIWHR Q70 = 1.7 CFS ~++R ~o -X22.80 PIPE DATA °S Q70 = 7.7 CFS i HWt0 947,30 FT. Q10 = 0.4 CFS Q10 2.1 CFS 27.3 CFS Q10 (TOTAL) = 4.4 CFS 1M1B 44 LF 75°RCP gr~4.55~/. HWiD ~ 0,2 HW10 = 364.75 FT. HW10 ~ 342.73 Ff. n70 ('fOTAI) = 27.3 CF TOP 352.16 FT. HWiD = 0.2 HVWO ~ 1.0 HW10 a 328.28 FT. .28 FT. HW10 331.95 FT 16-1 100 LF 15"RCP X3.60% INLET ~ 361.68 Ff. TOP a 846.92 FT. HWiD = OJ J HVIGD OJ 1-2 130 LF 15"RCP @3.25°h INLET 334.50 FT. INVERT 347,00 FI'. TOP = 388.82 FT. INLET = 346.42 FI'. INLET = 368.32 FT. INVERT = 341.50 FT. INVERT IN (28) = 330. 1~. CURB INLET (DURHAM STD) INVERT 363.90 FT. INVERT IN (29j = 327. D.A. a 0.06 AC. 24. CURB INLET (DURHAM STD.) INVEfiT OUT = 326.50 .34.50 FT. TOP = 335.54 FT 2~ 4 LF 15"RCP @2.50N• , . '8) = 330.00 FT INLET = 335.04 Ff ~ 36 LP 78"RC~ @7.67% 19j = 327.00 FT. INVERT = 331.10 FT. I 4J5 92 lF 18"RCP Q2.07Yo C O.s0 1E. CURB INLET (DURHAM STD.) 32g.rrp ~ 5-8 24 LF 24"RCP Qt.67°h 110 7.22 tNMR D.A. = 0.81 AC. D.A. ~ 0.52 AC. 71. JUNCTION BOX DURHAM STD) ~ 8-7 72 LF 24"RCP (g?7.94'/. a^, a10 ~ 0.3 CFS C 0.55 81, ORATE INLET (DURHAM STD.) IAM STD.) Q70 (TOTAL) = 54.5 CFS pNCLUDES , 17-te 86 LF 15"RCP @1.67% V ~ 010(TOTAL) a 0.8 CF3 C = 0.55 ~~0 = 7.22 If~HR D.A. = 0.26 AC. AC. 50.7 CFS FROM FUTURE STORM SY8TEM) I 78-1! 796 LF 1S'RCP @8.11°h Z Q HW10 $45.87 FT. 110 7.22 INMR Q70 2.1 CFS C = 0.75 HW70 324.35 FT 79-20 24 LF 15"RCP @1.87'h ` ~ z HWiD ~ 0.3 Q70 ~ 1.2 CFS Q10 (TOTAL) a 72.4 CFS 110 = 7.22 INtMR TOP 848.82 FT. Q10 (TOTAL) a 7,6 CF8 WHR HWN 0.9 20-ZOA 112 LF 75°RCP Q5.78% N INLET ~ 349.42 FT. HW10 = 863.80 fT. ~0 342J8 FT. Q10 1.4 CFS FS TOP ~ 333.77 FT ZOA-20B 772 LF 75'RCP X5.36% Q INVERT 345.00 FT. HVWO 0.4 HVWD = 7.0 Q10 (TOTAL) = 28J CF TOP = 388.03 FT. TOP = 348.67 PT. HW70 326.35 FT. = 28J CFS INVERT IN = 327.60 FT. 206-25A s0 LF 1S'RCP @S.OOY. W ~ .35 FT. INVERT OUT 322.00 FT. 25A-25 4 LF 18"RCP @5.00'% Z W Q~ 1. CURB INLET (DURHAM STD) INLET = 348.77 FT. HVIW = 2.1 71-23 E4 LF 15"RG~ @2.74°h W Z O D.A.. 0.20 AC. INLET = 367.53 Fl'. INVERT 347.20 FT. (HVIGD > 1.0 DUE TO C 0.80 INVERT = 863.30 Ff. DETENTION BASIN DUR h0 = 7.22 IN11R 2SA. CURB INLET {DURHAM STD.) INLET ~ 333.00 Ff. DUE TO WATER LEVEL IN 72. JUNCTION BOX (DURHAM STD) I 224-22 4 LF 15"RCP @5.00% Z z ~ z ~ tASIN DURINf3 70-YR STORM) Q70 (TOTAL) = 54.5 CFS 22-23 40 LF 75"WCP (~t2SX W ~ ~ W d 33.00 FT. HW10 s 320.37 FT 23-24 40 LF 1e"RCP ~1.25'h ~ ~ Z ~ ~ ~ a IFS 19. CURB INLET (DURHAM STD.) D.A. @ 0.07 AC. INVERT IN = 825. 825.00 FT. H1M1lN = 2.9 24/1-i24 4 LF 15"FiCP Q7.50% z ~ W Q10 (TOTAL) ~ 2.1 CFS D.A. a 0.55 AC. C 0.60 INVERT OUT = 327.70 = 327.70 F1' (HNGO > 7.0 DUE TO WATER LEVEL IN 2425 24 LF 18"RCP ~1.BTH. p~ W c~ HVY10 947.88 RT. C = 0.55 110 ~ 7.22 INMR DETENTION BASIN DURING 70 YR STURM) . 25'26 46 LF 24`RCr ~2.929L .W, „y~,p s p~ s ~R Q70 0.3 CFS 32. 30" FES TOP . 845.88 FT. Q~~ ' 2•Z CFS Q70 (TOTAL) = 6.8 CF8 Q70 a 28J CFS CFS VERT IN = 2 374.50 FT. 2~ 30 LF 24 RCP @7.87% Z ~ ci ~ < INLET s 3J5.7S FT. Q70 TOTAL) s 3.8 CFS HWt0 s 342.89 PT. S = 1.63% INVERT OUT = 378.00 FT. 28-30 128 LF 24"RCP ~5.47'fo O Z ~ g HW70 : 387.99 FT. HWrO ~ 0.9 V70 10.7 FPS INVERT s &{7.4U FT. HS~O s 0.8 :pg 29M28 22 LF 75"RCP X11.36% X ~ ~ ~ Ff. 72A. 30" FES 29-30 82 LF 15"RCP x'1.25°/. fr TOP ~ 361J0 hT. TOP ~ 347.26 FT. L = 20.0 Ff. 2. CURB INLET DURHAM STD.} INLET . 346J8 FL W 7.5 FT. 30-31 tOS LR 30°RCP ~'1.88y. Z J ~ £ f. Q70 (TOTAL) = 54.5 CFS ~ • z D.A. ~ 0.83 AC. ~NL~ ° 387'Z~ INVERT a 341.00 FT. USE NCDOT CLASS I RI C s ~ ~ INVERT = 857.20 fT. DEEP VIKiEOTEXTILE PA h0 ~ 7.22 IN11R Zpq, CURB INLET DURHAM $TD.) CURB INLET (DURHAM STDJ INVERT = 320.00 CLASS I RIP FLAP 24" S = 2.08°/. ~ 37-32 72 LF 30"RCP 7.63% N Q i~, 'EXTILE FABRIC dA3E V70 = 13.9 FPS ~ 83--33A E8 LF 15"RCP 3.84% Z = o 320.00 FT. L Z0.0 FT. 33A-34 t0 LF 7S"RCP (~3J5% ~ v W W s ~ g ~ 34-36 712 LF 15"HCP (~2.05y. m U ~ Q70 ~ 1.5 CF3 D.A~ ~ 0.27 AC. D.A. = 0.07 AC. AM STD) USE NCDOT CLASS 1 FbP RAP 34' ~ 68/4-09 4 LP 15°RCP ~Y.50% ^ Q10~TOTAL) ~ 8.6 CFS C 0.80 ~ ° 33. CURB INLET (DURHAM STD) HVV10 ~ 838.27 Ff', h0 7.22 IIWHR MO 7.22 111NiR D.A. = 0.53 AC. H~ s 0 ~ Q70 0.9 CFS a70 = 0.8 CFS C 0.55 AC. DEEP 111NGEOTEXTILE FABRiC BASE 63-64 26 LF 15"RCP x'1.54°/. y 0.55 INVERT = 372.00 FT. 64-71 1S2 LF 15"HPC (~i2.30~. ~ TOP a 342.17 FT. 470 (TOTAL) = 5J CFS p70 (TOTAL) = 79.Q CFS ~~p 7,~ ~A.}{p fl HW70 357.97 FT. HW10 342.39 FT. Q70 = 2.7 CFS INMR 71-72 748 LF 80'RCP @5.07Ns g ~ 121. 3B' RCP VItMEADWALL ~ 72-72A 48 LF 3l1"RCP @2.08% o INLET ~ 341.67 FT. HWiD = 0.8 HNbD 0.! HW70 858.36 FT INVERT 937.50 FI'. TOP - 355.77 FT. 'S8.3a FT D.A. = 22.6 AC. 127-122 SS LF 36"RCP Q7.36% v CN 74 ~ INLET 355.27 Ff. TOP &16.9! FT. HVWD s 0.5 z 3. CONCRETE TOP INLET (DURHAM STD.) INVERT 357.00 FT. INLET ~ 346.45 FL TOP 361.18 Ff 361.18 FT Tc 40.8 MIN. I n ~ D.A. = 8.5 AC. Zpg, CURB INLET (DURHAM STD.) ~NVE~ ~ INLET = 360.69 FT D.69 FT 470 = 41.0 CFS r~ C = 0.50 D.A. = 0.21 AC. INVERT = 355.80 FT. '55.80 FT. Q100 = 78.0 CFS i W fl0 7.Y2 INMR C = 0.B0 CURB INLET (OURIfAM STD.) HW 10 = 325.4 FT. ~ ~ Q10 72.6 CFS 110 = 7.22 INMN DA ~ 0.'N AC. 88A. CURB INLET (DURHAM STD) LAM STD) HW7dD 7.7 c~ u c HW 10 337.54 FT. Q70 (TOTAL~CFS 6.6 CFS ~ 70 ~ .22 IIWHR D.A. = 0.28 AC. AC. HW700 = 328.5 FT. ~ HN60 0.8 HW70 = 346.U3 FT. Q70 ~ OJ CFS C = 0.55 0.55 INVERT = 322.20 FT. ~ TOP a 342.06 FT. HWiU 0.8 HO = 7.22 IIWHR b Q10 (TOTAL? = 20.3 CFS INLET 317.00 Fl'. TOP - 350.70 FT. Q10 ~ 1.7 CFS cg~R 122. 36" RCP VIIMEADWALL i a ~ INVERT s 636.20 FT. INLET = 349.80 FT. M~'~0 = 341.02 FT. U70 (TOTAL) = 82 CFS 8,2 CFg p~0 a 47.0 CFS ~ b INVERT 345.00 FT. HWiD 0.8 _ ~3.~ ~ 53.82 FT Q700 7l.0 CFS ~ ~ ~ ~ Y 4. COfYCHE7E TOP INLET (DURHAM BTD.? TOP s 345.00 FT. HNW 0.6 S = 7.137E D.A.. 0.4f AC. Z0. CLRB INLET (DURHAM STD.) INLET = 344.50 FT. TOP = 357.77 FT 157.77 FT V10 = 17.1 FPS C ~ 0.10 D.A. = 0.23 AC. INVERT a 939A0 FL INLET = 357.21 FT x.21 FT V700 = 13.1 FPS i « - $ ~ h0 i.22 INMR C = 0.60 INVERT = 352.80 FT. 52.80 FT. USE NCDOT CLASS 1 RIP MP 24" ~ y Q70 . 7.4 CFS 110 7,22 IIWHR 27. CURB INLET (DURHAM 3TD.) DEEP VWL,EOTEXTILE FABRIC BASE ~ ~ Z~ ~ ~ Q70 (TOTAL) ~ 14.0 CFS Q70 = 1.0 CFS D.A.: 0.17 AC. CURB INLET (DURHAM STO) 4M STO) L = 24.0' ~0 ~ ~~8 ya Q10 (TOTAL) = 4.8 CFS C s 0.80 D.A. = 0.82 AC. ~c. ~ _ ~a' ' o g ; HWrD g 0.9 HW10 ~ 357.89 FT. 110 7.22 IIWHR C = 0.55 0.55 INVERT = 327.00 FT. ~ TOP ~ 842J5 FT. HVWU ~ OJ Q10 = 0.7 CFS 170 = 7.22 INLET ~ 341.75 FT. TOP = 361.70 Ff. Q10~TOTAL? = 27.0 CFS Q~0 3.3 CFS FS V INVERT s 835.e0 FT. INLET 361.20 FT. HW10 a 33!1.74 FT. Q10 (TOTAL) = 6.5 CPS = 6.5 CPS g 'J INVERT = 366.80 FT. HVWU 0.8 HW70 = 345.83 FT .83 FT ~ o V 5. CIHiB INLET (DURHAM STD.) TOP 342.92 FT. H~ a Q $ D.A. a 0.33 AC. 27• CONCRETE TOP INLET (DURHAM STD. INLET = 342.42 FT. TOP = 354.00 FT 154.00 FT C ~ Q ~ D.A. s 1.1 AC. INVERT 337.50 FT. WLET = 353.50 F'f 1.50 Ff I d ~ ~ 349.60 FT. ~ z O nd s ~ 22 ~IWtfR C ~ 0.50 INVERT IN = 349.60 Q70 : 1.S CFS 110 = 7,22 IN1iR 2e. CURB INLET DURHAM STD.? INVERT OUT = 314.80 m 341.80 FT. ~ ~ p y ~10(TOTAL) ~ Y7.0 CFS (MICLUD€3 Q1U = 4.0 CFS D.A. = 0.09 AC. STD) 1A CF8 FROM FUTURE INLET 5lU HW70 = 344.87 FT. C O.a0 ~5" FES (DURHAM STD) CfS U HW10 334.14 FT. HYWU s OJ h0 ~ 7.22 IIWHR Q70 = 6.5 CfS TOP = 346.50 tT. n10 a 0.5 CFS S ~ 2 ~ o~~ i Z ~/J T PD=~ 342.77 FT. INLET = 847.50 FT. Q10 (TOTAL) = 21.8 CFS V70 8.2 INLET = 341.87 FT. INVERT 344.00 FT. HW70 338.86 FT. L = 7.5 FT. U FT. Z INVERT FN (2~ = 337.40 Ff. HVY~U s 0.6 W = 4.0 FT. CLASS B RIP RAP 18" INVERT IN (4) = 333J0 FT. CAB D.A. ~ X0.12 AC. 5~.) TOP 842.82 FT. INLET = 342.42 FT. USE NCDOT CLASS B ~NyEpT p(n a 332,gp C 0.86 ~yyERT a 837.00 FT. DEEP V14~EOTEXTILE FA I10 = 7.22 IIWHR INVERT = 342.50 FT. 'EXTILE FABRIC BASE 42.50 FT. Q ~ ~ 8. CURB IIW.ET (DtAiHAM STD.? n70 OJ CFS N LAM STD.) w D.A, a 0.27 AC. HW10 = 342JS FL 2lA. CURB INLET (DURHAM STD.) g3A. CURB WLET (DURHAM STD.) 4C. I ~ ~ $ C @ 0.70 TO= 347.75 PT. D.A. = 0.52 AC. D.A. = 0.76 AC. C ~ O.EO MO 7.22 fNMR INLET = 346.65 FT. C = 0.70 z Q10 1.4 CFS INVERT = 342.0 FT. 170 ~ 7.22 INMR 110 = 7.22 IN?IR WHR ~ Q10 (TOTAL) = 22.4 CFS (170 = 9.0 CFS Q~0 0.8 CFS ~Q ~ ~3~ ~ ~ 22. CURB INLET (DURHAM 8TD.) HW10 328.40 FT. HW10 332.23 FT. ;FS I ~ ~ :.23 FT. g HW+D = O.8 D.A. = 0.71 AC. HWN = 0.6 HWiD = 0.5 ~ v TOP 342.17 FT. C = 0.85 TOP a 338.80 FT. TOP = 335.65 FT. 5.65 FT. V - INLET ~ 341.67 FT. HO 7.22 IN~HR INLET . 395.40 Ff. INLET = 335.15 FT. 135.15 FT. Z ~ INYfiRT Ih ~ 832.10 FT. U70 OJ CFS INVERT a 327J0 FT. INVERT = 331.60 FT. 331.60 FT. ~ o INVERT OUT ~ 337.40 Ff. n10 (TOTAL) a 7,4 CF$ HW10 382.77 FT. 28. CURB INLET iDUHHAM STD. 63. CURB INLET (DURHAM STD) AM STD1 CARO~("~'+~ ~ v~ r 7. 24" FES HWd) 0.5 D.A. a 0.33 AC. D.A. = 0.16 AC Q10 ~ 22.4 CFS TOP = 346.89 FT. C ~ 0.70 C = 0.70 0.70 ga,~'~OQOFESS~py~~y'`~ p ~e S 7.94Y. INLET = 346.48 FT. 110 ~ 7.22 IM1IMR 110 = 7.22 V10 ~ 70.8 FPS INVERT 342.2(! FT. Q10 ~1J CFS Q~0 0.9 CFS .FS ' ~ : 12.0 P'f. X10 (TOTAL) =4J CF3 Q70 (TOTAL) = 3.3 CFS = 3.3 CFS (INCLUDES ~ s 6 p ~ 23. CURB INLET (DURHAM STD.) HW7^ a n ~2~•28 ~f• 1J CFS FROM FUTURE A FUTURE INLET O • ~ E~'"~ ~ W ~ . . LA- 32.23 FT. f- 161-1 USE NCDOT CLASS B RIP RAP 18" - °•O9 M.F. "•ww HW10 832.23 FT. HWN 0.5 O " Tr AIA 7)l o t v 2 ~ OF DURW I DEEP WCiEOTEXTILE FABRIC BASE C 0.80 TOP ~ 385.90 FT. 135.54 FT. PPUSLI CI C WORKS DEPARTMENT w INVERT = 3311.00 FT. 110 7.22 IIUMR INLET 335.40 FT. TOP = 335.54 FT. 070 = 2.8 CFS INVERT g 327.40 FT. INLET = 335.04 FT. i.04 F1`. APPROVED > LL 010 (TOTAL) = 8.2 CFS INVERT = 331.50 Fl'. ui 31.50 FT. HVIMO = 342.87 FT. ENGINEERING DATE C) Cr, ~ H1NN ~ OJ STORM WATER DATE LLB TOP = 346.61 FT. -j TRANSPORTATION DATE F- tD DATE LIB INLET = 346.11 Fl'. W INVERT = 341J0 IT. DATE LU N P R:\3001J089\0M09000\ i0 .OON _ / I ' r / 1~ / r i ' / 1' i ~ ~ A~ I / / / I 1 ~ ~ ' \ / / / ~ ~ - - r' / r / , i ~ ~ \ r~ % r 1 ! l~ r / ~ III" / , A'' a i ~ a ~ r~ / . / / Ir I / l ~j~ 'G I, ~ V / ' r r / / / 11. ~ ' 1 / / / i / ii/% ~ / .3 f ti j- i',~ r" ~ i i ! ! 1 f I y I I 1 d ~ - - t I I I' ~ / / r ~ 1 F ~ / i f ~ ' / ! l ~ 1- / r / l - ~.J - ~ / / / I / 1 ~ I Icy i1 ~ ~ / i ~ ~ ~ ~ ! - ~ / 1 i ~ I r / ~ l i~ ~ ~ , r / / / ~ / /I I ' / t I 1 I `7 - ~ 1, ' I . _ ~ ~ q ~ I _ ~ .i / ~ r ~ r / ~ ~ i ~l l r / ~ I I / r . f ~ / i ! f I~ ~ l ~ is ~ i ~ / 1 / - r / ~ / ,7 1 , I / ' 1 / / i / .r ~ j j; / . / /1 / / /~;r~'~ / / I A 1 ~ : / ` r / ! ~ i, `t,r~ 'rte I I _ p~ rr ~ ~ l / / ~ ~ - ~ / ~ I ~ 4 / / ~ r - 1 ~ ~ / r ~ ~ ~ _ / r I ~ ~r _ / ; /r ' / / RIP RAP LEVEL / t I I~ r 1 / / , n ~ ~ ~ ~ ~ i I i i _ , ~ / ' ~ / + rl / / SPREADER-~ ~ I I , , ~ i' - -~~-I - r ~ , , / ; / (SEE BETA 1L / 1 ( 1 ~ i i tl\ i rf I 1 i ~ ti ~ ~ , r ~ - _ I I - - , ~ - / / I! I I ~ i ' r . / ~ _ ~ / ; ~ 1, , / 1 THIS SHT. I, ~ Ir, I ~ 1 ~ ~ XQ'~ i I "i - i ~ ~ / ~ - - / ' ~ 010 = r0 C.F. u I ! i 1 ~1 i V ~ ~ / - ,il ~i 1 ~ v ` ~ ~ r ~ ~ i V - / ~ / - ~ LENGT~f - 52,E-T', ,I ,1 h w' / 1 ~ i ~ - ~ A ~ - / I I ' ~ . is . ~ r r / / 'i r / . r' I I - ~ t~ I ~ ~ ~ ~ \ - / ~c N / 1 v ~ ! ~ ~ ~ / I I ~ I i I it 1 / ~ ~ ~ /r,- ~ ~ ,,stir ~ '3" , / t- f I I ~ ' Z tF ~ I I ~ ~ I I / \ ~ / r /r .Y r~ / I 1 I 1 ~ ' I ~ ~ ~ , _ / I / I I I w~, ~ \ / ~ ~ v. ~ ~ / r ~ ~ , / - I I ~ v , a i ~ _ ~ I I I I 1 --I - R[P-RAP LEVEL / \ _ ~ / - r / i ~ " - , ~ i I / / / ! 1 t ---1 - - - S~yyrr Z C) 1 SPREAOER / ` ~ I ~ - 50 NEUSE I VER ~ , ~ 1 ~ ISEE DETAIL v ~g--_- ~ 6 / ~ r 1 fi - - t ~ ~ / ~ r 1 / ~ ~ _,L~ J I \ I THIS SHT.I RIPAR B FFER , 3 ' ~ ~ / I I 010 = 6.5 C.F.S. , - 1 ~ W a o I TH = 8 FT. vv ' ` { I LENG 5 \ ~f I r I , vV , ~r 1 ~ E 2 AS I PH \ \ \ \ I ASE 7 \ _ I PH ..,y_ ~ _ it Y _~1_ - - - -1---~ W ~ ,U7 ~ I 1 r a--- ~.I . I W Q. - ~ I 1 1~ l I i i Av 1 A - y R1 ~ I ~ 1 1 - - ~ ' ~ - ~ _ ~ I \ I 1 \ . it o~, zo ' rD / 50 C I T OF - I 50~. NEUSE RIVER 1 ~ . ~ _ _ _ ~ , ~ ~ ~ i / I r ti I f - ~V P BLICIST~R RI v~, \I r ~ IV ,I ~ RIPARIAN BUFFER ~ ~ ~ ~ ~ ~ ~ o I ~ Y AOE A E T ,DURHAM B FER r I, ~ ~ r~ / - Q ~ RIP-I~ P LEVEL ~ r~ ~ 11 v I ~ _ _ ~ A\ ~y i vv ~ I I ~i 9,~ , AV I . ~ I I r- = ~ ~ - SPREAG R / rr ~J~J~ _ I ,1 ~ y•. ~ ,~,~11 I ~ / ~ ,i ~ , c I n v ci v l 7~ / v~ 4 v - - ~ ISEE D TAIL ~ 3O I ~ _ _ ~ ~ ~ _ I , THIS SHC,) i_ I Zo+ o? I A ~ ~ \ \ I r.. , ~ , V' V / _ 010 = 3.p C.F.S.' / I - ~ _L ~ 1 - ~ Z ~ 1~_. LENGTH =~44 FT. _i_. I_ l ` W ~ ~ - / ~ ~ 1 t^ V/aZ~Z - _ ~ ~ r/ I I V+ Q ' \ ~ r . ~ V ~r ~ / ^ I \ / r` 1 _ i_ ~ 1 ti ` / I / / I ~~~W 1 it r ~ ~ ~ ~ t ~ W O fit. . - ' ~ 1 \ I I ~ ~ ; I I W V h F- I^ - f I ~ r~ v - 119 ~ r ~ I, , 1 I / I \ ~ ~ - f. , , ~ r / ~ ! 1 ~ , _ ' ~ - _ _ - - , - ' R" "i-., i ~ i ~ I Z I I l - ` ~ _ ~ ~ , 1 1 t ! ! i I~ n - \ II - _ , . I I 1 ! I I ~ / ~ ~ / I I I I i I ' ! I I ~ I ~ / r ~ ~ / ~ v~ ~ vv I I 1. , - --aC- - , ~ ~ 138 ~ ~ r I IM 1 1, ~ I ~ , l 0 7~~~ 7~ 69 ~ ~ ~ , , /I v ~ I 1 - ~ ~ C r 1, 1 I I I I 1 it ~ ~ ~ ` V ` i` ! 1 I I i I I II / I I r ~ I ~ ~~~~V~'~~ ~ V , - i~__ ~ ~~~-I I I X11 t 1 t~~ ~ ~ ,L f ` i _ 11 1 / ~ I ~ I II I ~ I~ Z I I~ 1 I I ~ l l I/ ~ ~ l s. h* - -F-. 3 ~T~-.-__ 1 ^ ten` , I \ \ ~-,7 `TZt' -I- ~f-~,, I I I I ~ I ~ ~l I I I I 1~ I I ~ ~ ~ ~ ~ II 1 I I I 11 \ ~ ~ r ~ / I ~ i I I ! ~ I ~ ' ~ ,.F.. _ _ _ t _ - `1 y ll ~ \ i ~ 1 I 1 \ I ~ `n 111 I \ I / V l ~ ~ I v q r~ i, M~.. . I I V it I I ~ ~ / 1 I I ~ I , I , 1 1 ,I ~ N ~ ~ ~ vs , ~ ~ / J~ I I I I r ' ~ ~ } Z + I 1 ~ ~ 'i. q 1 1. I i h7`I 11 1 1 ~ a I I J1~3'~I ~ ? ~d' / v' ~ 1 1 v/ I Yh j s.1 1 1 ~ ~ I I I I 1 ? S+ ~~q .I ~I I I i I I/// / ti~.,A 11 ~ 1 ~ ' t / ~ 1 I I I I ICI 11 I~ II II i,V ~'^I- - = --J 1---i--_.L..,.., t, ~ / I ~ I ~ - I 1 \ s . 1 ! .~ND WALL / ~ I , , ~ LY_ g N H F- > / 1 I; EL = 32$.0---r"------- ~ 1 /I I I I ~ Z Q 0 0. W ~ ~ /~I 1 1 f ! /I ' 1 ! 1 r I I III I I ~I , I ti- ~-iri-^T--- a ~ 1 f v. Av y_ 1 f%! ~ I f I f t l l I I I ~ L__~ _ I E 1 1 1~6 v t I I I /I ' I i II I ~ II i I I~'~ i I 1~. ~'I- ~ ~ I r/ ~~s,' I I I' Cp, I l.L~ `J1 V7 Z y FOX ~ ~ , ] 1 I > , ~ W 8 ~ x , , I I > 3 ~ o - AG = 332.4 T_1_~_~_Lr1 ,I__ ~ ~ I~ A oC OC o ~ . ~ \-_i\\1 1 f O'~WIDE ' ,I , I II I~ F r o' 64 I' WAG = 326. ,._,_._._.1;.~.: _ _ ~ I I I } 11. 1 may. _ _ 1 _ / ~B, I ~ 7 ~ = r-1---- ^ N N N N N 4' - ~ ' - - ~ AN.~ SEWED ASE~IE ; I' ~ ~ I w v L~.._ ~ I 114-r - - - - -..n _ - Q ~ - ~ , s , ~ ~ 1 x 1 _ I , I y~ I q q W I ~ I E ~ . _ 3ti a - TEMPORARY CONSTRUCTION i t ,I I- I"_-~. ~ I-.,--- I 'i -i- I I_~~__~ I I "'"~_I I T- I , I -r--- ~ 0 , 1 ~ N I r , ~ -?-r~ --r- I, , 1 ~ ~ III ~ ~ , ~ Q I I r ~ {I V I, ~ J i qq G I - L..__!. ,,I ,'i ~ I ~ I III ?7 jlI ,I f ~I 1 i ~ I p d~J I i I I I, I I I f, I I ~ _ EASEMENT TO BE ROVIOED I I . i I I II I, , I ! 9 6~ x I y 3,5 `I~ FOR REQUIRED GRADING w I j ~ I' I` ~ I ! I I I q t! I I II ,Ii1+ i f Ij I; I 1 ~ 3~ ~ , ~ I I I I I I I I I l l ~ i l l II '11 1 ~'r -I - '7 ~ -T. ~ ' ~ I ~ ~ TW = 330.0' ' ~~~~'.~I 1~ ~ I ~ d' m N ~ ~ I I C I I I~ ~,I i I I I• I I I ',I `y ~1 M kp I I' - I T. I I I ~ 4 ---F--; _ _ _ L 11_ I I ~ ~ I ~ i ; ~ ~ Ii I I I 111 ~ I'~I, IM 11 , I I . I I ~ i ~ ~ I ~ I ~ BW = 325,5 t : - 1 Z n ~ I / - y~~ 1, , y 1'~ ~ ~ I f I I ~ (I 1, 1, I I I :I ~ ~ IW ' _-Lr____~ I I ~I j, I I t 11 I - i I I' i III Ili .I' I I I ' .I _ I I I i ~I ~ I O I 1 1 - ~ (~~r,-~, s--- L- 1 I ~ r °T; ~ , ~ -.I , i 46 , I_ I 1 I I I h I I III I I ~I ~I I I I I ~ I~ f ~ I i I', , , 1 : L 113,0 , , 1, 1 I ~ . I ro i I I 1.3 I I 1 I rn I , I p I I I , ~ I', ~ i .I I, 11 I , I ,13~ 1 , 1 5 0 z ~ - 5 . _ a. , I I I I 1 I ~ 1 ~ i. , q ? 12 7~~ I 1 2 O I' I, t I, i I(~} I I 'I ~ I I, I I I i ~I , N I i; i` P. ~ I 1~' I u~ : ~ , 1VE EQR6ATI~OfJ ' ~ : ~ ' ~ - - ,r ` C 3 Q _ _ _ , ' I I i I I I I ~ I l' I I I I I Q I III ~'I ; ~ I ~ I ~ i t v I ~ I i 6~ I I A- I I t..____! , I- _ I i 1-- 1 1 II 1-1 I III I~ I ~ 1 1 ' ~I 1n I I I I I ~T I A ~ / / - . - / l; I _ _ a I ~T T °L " N~ p>~~ Iii 'I;1 ~ ' , - ~ . -r , , ll I I I ~ I I I I I 1~ 1 I 1I 'I 1 , J i - r 1 ; sj AG - 336. 1 1 _ ~ r / 9p , WAG = 330:a - I Q - r. . r.~ i ' - I r T] l'i ~ ~ ~ i I _ ~ _ 6~ I ~ ~ - ~ A ~ ? ~ _ _1 _ ~ _ - m I - _ i F' ~ 1 I~ 1 I i I I, , 5~9 ~ 'WAG = 334! r 1 ,-,,,~r I, ~^-T- ~ W i al '~'----h- ~ ~ a; I ~ I I ~I 1; _ i / i ' =---^s- 1 ~ WAG - 3301,51 ,I 1 1 ,I/~ , _ I ~ Q 0 V ~ I I v/ ~ ~ G o r, a. ~ ~ ' / I ~ I L - / I . t ~1 t i , 1 ~ f ~ `'I I I, ~ I I I ~ I i ~ ~ s0 I I ~ / f I ; , r ' / ~ ~ - Z u - c , 'l C- "1 ' P - ~ , ~ ~ E I I I ; I N `I t ~ ~ ND WALL , ~ I 1 I ' ' . ~ a _ , ~ ~ ~ ' ~ I l - 334,0' ~ , ~ r r - I- ~ _ , i~ I / / ~ ~ I n f ~ro I I I I ~1_.~r- ~~01 ~ I ~ ~ / I ,'I ~I I I" 4 1 1~ ~ I' I I I i I I~ 1 1f ~ 1 a I i / I~~ I,` 1 I~ I I ~ f fl I I fl I I~ ~ r' ' ~M i i ~ ~ ~ / - GRASS (FESCUE) SWALE c 0 + 1 ~ z © W m 1 ~ I I ~ _I- 1 ~ ~ I: I i i ~ t' ~ - 1 I j I I k>+ I- 1' 1 - j- . I I I I~' ~ I i I i~ l! I ~ I I I~ I~ I I a l I I~ 1 1J n ~q~ _ J ` ` ' ' ~ / ` ' ` ; i ~ + ~ , " - -1 5 FLAT BOTTOM W/ 3;1 M ~ ~ 5 _ \ ~ ~ / ~ I 1 ~ . ' ~ ~ _ - . _ SIDE SLDPES AND 1, 5' DEEP I 1' ,i a 1-I 1 I 1 9~ V~OJ I,~ I p ~ 1, q ~ I f ~ i , h I I i ~ I I I ~ I , l- - I_, - I , ~P.I 1 0/~ 106 ~ 1: 5 1 11 I I' ~I I I If~ ~ I I , I I I I I 6 1, 0 , Oaf ~ 0 I I _ ~ I, I I I Li - ' I I I I ~I 1~~ 101 i U ~ 4 K__r,_ _ , ~ ~ I LENGTH = 130 LF a 2.Ox I I i 1 I I I_ ~ 1 ,I I I r, i I' I I I I ~ i r~ l / ~'I I I ! „ 1• ~I i~ ~ l: r Ir , , r I.' I _ ~ 1 ~1~.--` ~JI I. I ~ I I ~ ;~I I! I I I I I' L t-1--' ~ ~ I I I i, I I i. f " Q2 6.T C.F. - ` I I / J I, - ~ I I I i i ,n ~ ,3. 316 ! ~ ~ I i I III 1 I i , c. - - ~ v' r i 1, I i Ir, 4 vt ~ r 010 = 8.4 C.F,S. i ~ _ .I I ~ r ,I t 1 2~ ~ I V2 = 1.3 F.P.S. U , I I; ~ ~ ~ i i 1 I ,~i/ i I - Z T ~ ~-r / ~ r . ~ --r I _ r. / I I r ~ I I 1 - " / ; ~ I~ / , _t''~ V10 - 1, 5 F. P, S. P _ ~ , , ~ "r PERMiSSABLE SHEAR - - ~ ~ ~ ! ~ , i~. ~ ~ +1 r-~-~e~lTj-'' I / ,•:-r:~_ 'I~~._.._-- 1,40 LB./S.F, - r ! I ~ ~ I 11/ ---t- v I ~ ~ I - ~ f ~ , s ~ ~ ~ 1 / ~ I ' a-- CALCULATED SHEAR - U 9~ ~ ~ ~ , I / ; ~ ~ ~ ; , r ` r' / ~ I / ~ I 0.94 LB./S.F. v i~ a i ~ / r I i I Z . m I 1 / -0" _ ~ s i •E--~-- ' -~`~~sa I 1 ~ ~ Z ' - : r I r I n; 1 _ 4 I r I I t,' \ ~l , i, ~,F. , I i I 1 r i / 1 ~ 1 , , t I'''•r3' I ~ ~ ~ A ~ i 1 I" + d t' I a I I , Q I I~ r 4 I / I ~ ~ I al I W I ~ 1,8 ~ y ( I BALLAST MAX, N N ~ II (7 ~52r151 q 50ii '~iJ r` -IVY r~~ ,I, I'i: r-' , I~ +I 1 I ~ I"" N ' ~ ~ ~ r ~ r i ,,r. ~ _ I r , I , 1 i , 570NE 1 _ 1 b s I I I, t , I 1 1, it / X 1 1 I I I r ! ~ q I_- ~ ~ i , ~ I I r I I I I I , r 7 ( ~ 1 _.r~ r 0 i G~ 1 1 I ~ , I _ n ~ ~ 1 I 1 1 I EXISTING SLOPE 4 1 I I` Iii r ~ I I ~ - 'i--r- 'I " d t ''i) I ~ I~ I I I ~ r I l l 11 1 1 I II^ ^m"' °G+ Z I - I _ ~ _ ~ ' ` I I 1 ~ I ~ I t I 11 ~ ~ I ti ,1 ~ ` . I ~ I ~ j 1 1, I I I I I I I Y I I i'~" uv`~l i CLASS 1 RIP-RA FILTER FABRIC II r I ~ ~ ~ ~I ~ ~ I I 1 ~ r^~ t - ~ 3 I 1 I I ~ I t I VARIES w f I I ~ ~ '=~~8 I I I I' I `I I ,I 1 z I ~ _ I I~ i ~ I I ~ ~ V - . ~ i I I Cis I I I , ~ ,I i t I I ~ I I I I I I I r ~ V 1' I ~ LEVEL SPREADER SHALL BE CONSTRUGTED SO THAT THE TOP OF THE LEVEL I I ~a SPREADER I5 AT APPROXIMATELY THE SAME ELEVATION ACROSS THE ENTIRE I i ~ L;~ ~ ~ 1 I I I ~ I _ °'1 ~ r I I I II ~ ~ I i 1 I I I I ~ I ) ~ 1 ~ 1 0 1 s I LENGTH DF THE LEVEL SPREADER. ENDS OF THE LEVEL SPREADER SHALL TIE INTO , I EXISTING GRADE 50 THAT STORMWATER FLOW IS FORCED THROUGH ANp OVER THE I LEVEL SPREAOER~ NOT AROUND THE ENDS DF THE SPREADER, ti ~ I I I I I w ~ I Z x ~ I , I I rY I i I I ~ Q ~ W 6 I I I ~ ~ ~ ~ D I I RIP RAP LEVEL SPREADER DETAIL ~ ~ ~ X44 ~v.r. ; . t ~ i I I I ~ I~ I I , ~ ~ I, ; r I+ 1 1 ~ I I I ; I I rl i 1 ~ I ' ~ I NTS , _ J ! 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O R 0 L HE BR N A D (S.R. 7 _ SCALE IN FEET M o ,r 1 B 18 I - - . - - . - - - - - - - C R 656) _ _ - - - - - - - - RCP INV. ; ROSA BELV I N PROP LLC INV.-345.37 ; 30 60 120 180 240 ~ 0 R: 2001JOBS /01493000 /1493DWOSUB.DGN 0 Z _ _ _ / _ I U / / / ' '~I' M) 1 t ~ - ti r- , 'I.J/ 1 I M lir l~\ ~./i/~\~~ ~3x©~i-' / / I ! ! 1 ..{J III 11 1(ir ~ I a Wt Ir r ,J I Al 1 ~ iJ'.,v- _ ~ ! T ~ / / , N1F ~I~~ - ..,I ~ , ~I, ~ 1 A i. 1, I {)+I ~I A\rys~, ~ x ~ I' Jar I J 1 'l~ ,M :i i~ I'f ~r~i: ~-w~ _ i~ ~ 'ill- I H ~ HARVEY L. HARRIS ' ~ 3 3 1t. 1 l tL~ I I ~,f .r ~ / r llf' 1 1 { LW I 1 '/L~II~ 1 ~ A~. ~ ~ l~llll' 1 ;fit ut ~ ~i , ! r/, ~ 'i I i ~ I {"'C~La'Q J ZONE. I-2 ` . . ~ / , VACANT - ~n Y ~ / / / ~ ~ lJ ~t I ~II ~ 1 ~ 111 ~ i L r'j~~11 ~ 1 I I 11i~t' ~ / ~ r , ~ ~ l 1 1 I I I v,~ ~ l I, r 1 I (t ~ I i { I ~ (L ~ +IM I S i t ~ lI'J~ i' ~ /I IJ,/II I rtr;~{, ~ ,11 l 7. ~'1~ I I 111 / / r I I , ! 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Y 4 /'J ii ~ r h 1 i 1~{ Ililll 1 l Ir / I I ~ 1 ~ f l i i 1 ~ , ' t l • ,r i I 1 ~ lr^'trtr ( ti'~ I'I,, 1111 ~ I II', , _ i i l , r I' - / ~ I l ~ ~ r l l J,' J 1 -1 11 1 I FiP, f i/ 7 1~ l~~... - 7 ^7 1 1 1 ' f l I .Iii ~ / t r III t9r i ~ ~ I I ,r p J ~ r' ~ 1. t I I~ I ~ ~ i` I{ o ~ WETLANDS • ~;Y / / ~ I r i~ 'r ` ! r~ I' I ~I i' I t I I' I I l l I i~.', „`i.+%'C' l 'i I - . ~ r - ' S ' ~ ~ ~ , ~ r Ir l ~ , , ~ ~ w , . I V S - ~ - I ~ ~ O / ` / / , , r f j ly ~ ; ;~v~v1 ( I i q t 1 1~' Iii I r ~ i > ~ ~ • i _ 76 , + 1'„' N I F i I 3 s / \ ~ Q„'-, Q t 1 I I 1 , ~ I \ ~ ~ ~ _ . ~ r/ ~ ~ s ~ ~ ~ ~ NIOTECY! ~ 1 I v I i i ` I ~ ~ . ~ ~ I r lam;,,'. ~ , 11 1 , ~ I { I { ~ I I { ~ . , ~ ~ I ; TEMPORARY SED I%MENT / ' CTOR GR DI / / / a PRO / / / bey ~ tQ q 1 t yy' ~ ~ _ , - ~ ~ ' r , ~ i I h{,I~ + ~ ~ I ~ , , ~ ~ ~ BASIN N0. 4 t ' a, 4 I,~ jpPdE -2 / r / U.C71 r.Z ; ~..y / / , , I j , M I { j illr l ~ l J 1 - ~ r-- * ~ J J 1 - - - ~ 1,,,1 INDUSTR r ~ zc~ Wro~ a~ u , ? i~ ~ ~ J Y, I I it0 q,i1 t-' f~ I I I t it ! , I ~ i Z i " ~ ~h ~ ' ~ • ~ ~ , ' i I ~ i I ~ ' ! ' I i' TEMPORARY SEDIMENT BASIN N0.1 ~ ~ 310 ~ ~ , ; I i l i l 1 ~ ~ Q ti - - m Y ,I 1 Q 1 ZpW 17 r N r _ ! r / i ' , ~ , / / ~ i I I ~ l ` 1 { + ~ I ~ ~I ~ ( I ' I i i !CUSTOM BASIN ~ Q ' , ,:;I ~ . _ J ~ , ~ ~ 1 l I ttnl II; ,i , U / , , , ~ l ` ~ , ; I I , ~ DRAINAGE AREA - 6:6 AC. W 1 , i fl,.lr / 11 Q~N fJ , ~ ~ `r y I _ ; , ,r 1 r {r / ~ I I , ~ , , ~ 1;; . DENUDED AREA 2.4 AC. IYtiN~ Z ~ rr ' ; . , • . , ~ I , I I + . { . ; ' !1 'ri'%'" " M~ I ~ REQUIRED VOLUME = 11,880 CF N~~Q ~ w 1 -1 i ' r / ' I I 1 I , r ' , I , ~ rl I LI. LL tD J' J / r 1' i. I l Lt. ~ 'r, , / ,i ~ II { ' I J, , r t'r;r,~ I , VOLUME PROVIDED - 12,168 CF z~ W ~ z h tT I \ h , ~ i - _ I I "~~Q ~~5 / ~ / 1~ - / r !f~ IJJ .1+r I ~ i .i r IyJtU~~LIJ GC~Wt~ ~ r , J ~i , ~ ~ - _ -t t _ I I` , ~ ~ : a~ ' . ' ' "I ' ifwaun/: ~ 1, !,`r l'' I r BASIN SIZE 39 x78 X5 DEEP ~ m ~ n I ~ 1 / '7 r ~ ~ , ~ / ~ I / '0{VFASIp~ r I J r . 11; r r / i > ~ ~ ~ ap © ~ ~ ~ I ' ~ ,~--t~tl? ,e~Ta~;t,trr> -~1 'I I r ~ WEIR LENGTH - 20 --I°°~z ~ emu„ ~ ~ i It--~r ~ / :i-=" ( ' i~~'or ',~irr,~ ',I~ .i I 1 -~4'N~ ~r r ~ r J , _ 1 r r ^ ~ .Y -1~ ~~.-f ~ ul , ,i. 3 3 17`~.,,~~ i _'1 - ! V 1 1 I I ~i' F' J ~ ~ I1 I I ~-!-1 ; I 1 L.%' ~ t 1 I I i,! J r i i ~ ~ ~ W Ori c, 1. ' ' r r ` ~s ~ ' - ' I ~ l ; I ' / ~ , ' ' ` ~ ~ TEMPORARY SEDIMENT BASIN N0.2 = W ~ ,i,lJ ~M' ~ 1 ' I I I i,ll'I ' ~ ' / .J , ' Yj ~ ! ~i J ~ I I i ~ / 1 V ~ ..ter .-k-~ 1-,.~ ~ / .~'1"'I -1 r1 I„ 1 I i ~ 1 ~ I r i ,-4-, _ 11 1. ~ ~ ~ . i I !'J, 'I~ r. r I ~ r , ~ I ' ~ , _ ~ 1 r ~ CUSTOM BASIN ~4 S , , ' ; ; , ~ I, ~ , ~ ~ , it , I r,,,; ~ , DRAINAGE AREA = 5.0 AC. ~ . N c i i ~ r r I 1 ~ 1, r' ' i ~ - 1 l I II II! ; , 'r V -T % I I I - , I. I / 1 ~ ~ 1 , , I ~ - , / ~ ~ 1, i i "'T~,.. ~ ~ r 1 1 ~ ' 1 I i' J r ,1 1 ..1-X ! i I I ~ . - ~ ~ 0 . / ' ~ / ~ i ~ 1 "I~il I ~ { I ~ 1 I~JOyt i r=- ~ ; 1 ©N ~ ip r .j , I. ~ ..r,.t ~ DEN D - A 0M 3 ~ ~I; 3 ~ I III 1 r , 1 r / 1`.. IIII(~ / / /r- "1 V 1 A ~ J~ \ ~ i'~~ o : ~ J , ~ , , , ; , ~ , ~ ~ U ED AREA 4.3 C, z Q r a ,,-,rlt ~ r I ~ I l ~`.I ,{{Ili+i{ ~ ~ _ ~ tt r ~ { ~ / ' 1 1 ~ i . ~ , 1 ' r ; 1:~,. Al t - ,A ~ - ; ~r t. i , ~ ' ~ ' =S1 I I . r , , , , , ; , l , , , , , REQUIRED VOLUME 9,000 CF oc ~ s~ l / ~ ! 1 _r n r .,;I' ~J 11 r~ I ~ J! Y ~ 11 , ;~r I 1 1 I ~r ~ - 1 -•t~~ y-~~ ~ fit. i , I ~ {I , ~ ~J~ W ; • ~ ~ , ' ~ ~`.i ~ ! I I., I' ~ ~ ~ VOLUME PROVIDED - 9,248 CF ~ i C1 A~ /n'~'AO' A L1 Ili~i r+.{I ~~1~ i j i r i r ~F~M~'. p ; , d:~, / t~ J ! O - - ~r I III r.,.,,-~.~' i .1 ~ , I r ,r A 1; ~ I - 1 > t , , BASIN SIZE 34 x68 x5 DEEP z = o~ o~ r r I Lw.._ _ .~,Ja ~em8~~?? r-.~ ----r_ _r". ,~'~I 'l: I I ~ t~ \ ~ i i - r ! _ ;r- , I I ~ ~ I r WEIR LENGTH = 20 ~ W W 4 , ~ ,~+Ir r su ~A ~ Z ~ , / ~ ! ~ r-~ ~ 1 ~ 11 1 _ ~ ,1 rl , :11 1 I I ~ I ,rI-~`~,§ ~ ,3"~ ~'y ~ _ ~ r 0 J 1 - ~ , - ~ - _ 'I~ ,III, 1 II 1 r1 ~I 1A.t~ ~ ^7 ~ y ~ : ; ~ , ~ r t'", TEMPORARY SEDIMENT BASIN N0.3 ~ z = ! L ' r / ~ i 4 4 r ~ to rJ+ / r~ ~ i I'~ I ; tom' I i.l ` r ! I Y'' .1~ t 1 , I ~ O r - ~ ^'~pr ' rl V ,,.~~t . A 1 11~ 1 I I~ t ,~~a i i ,I / i 'J , , , , ^ ~ I , ; f.. ~ ~ (GRAVEL & RIP RAP FILTER BASIN] ~ ~ ~ / N~ ;hI A t' J-r-A'7~- I , ~ I I I ~ I I 14 ~ ~ 1 I ~ ~ i I ' ' - ~ i' i ~ ~ / . , ; , ~ I y,:, ; ~ , DRAINAGE AREA = 3,3 AC. ~ ~ , ~ r ~ _ ~ I .Y,~/ - ~ i ~ J ~rf~/ _ I I,II~1l,J Iii , '~~"~A~~,A,11~`'•,`~1 ~ ` / CONSTRUCTION SEQUENCE ~ . , r , , , r . ; _ _ , . , , t, - ,r, - DENUDED AREA 3.3 AC, / i ~ i ~ 1. OBTAIN LAND OISI'URBING PERMIT, I . , 1 ~ r ~ ~ I ' I I I , ; ^ ~ ~ , ~ , , ' i ~ 0 ~i. l / ~ / ' ~ ~ r ~1 - - - - , ; : ~ REQUIRED VOLUME = 5,940 CF i ~ ' 2r INSTALL GRAVEL CONSTRUCTION ENTRANCE, DIVERSION DITCHES, SILT ~,:.~-~r;~ I ~ I I ry ~ ; ~ ~ ~~`~r'"~ - ~ ~ ' ~ .r",;,, r VOLUME PROVIDED = 6,144 CF ~ W I ~ + F LACES, SEDIMENT' BASINS ANDIOR OTHER MEASURES t+S SH WN QN THE , ~ r ~ r , , 1 : i ~ ' ~ - , r r 1, E ~ ~ l , i ' , b r 1., ~ A . . _ _ ~ ~ / , ' i , ' APPR VED PLAN, AND ANY SPECIAL CONDITIONS NOTES 1N LETTER OF 1'r,',, ~ ~ - ~ . , BASIN SIZE 32 x64 x4 DEEP ~ c , APPR VAL. . 1 ~ ' I y~~ _ ~--;'r + ~ 3r CALL 560-0735 FCIR ONSITE INSPECTION BY THE SEDIMENTATION ANO "t- ~ ~ ' ~ J ~ ~ EROSION CONTROL OFFICE. _r~' `;i 1 ~ 'r ; x , l ' ~ / - _ ~ , o . ~ 4. -GIN LEARING, GRUBBING AND GRADING. MAINTAinI MEASURES A5 ~ , , 1 , ~ ~ r ;,i~I ' ; ~ ~ ."35' r ~ 1 'r,~ ~ , I B C _I , ~ - , r 0 1 , ~,.:1; , ; -h-.~ 'TEMPORARY SEDIMENT WEIR LENGTH = 12 ~ ~ ; , ^ ' ~ , 'r. BASIN N0. 5 (DETENTION z JI 1 I R QUIRED• „ - -t..- r ~9 ~ ~ I i 1 ( A~ r, _~rr r , ~ r % yi 1 , , ~ ~ r, - ~ . + ~ ~ I ~ BASIN N0. 2) TEMPORARY SEDIMENT BASIN N0.4 a z 'y f r r l I m Q/ ~ I 5. SPECIAL CARE SHALL BE TAKEN DURING CONSTRUCTED,, OF STREAM CROSSING TO - ~ I , T R ANC>~t r ~ 1 J 1 J t r , i tiv • r. ~ , ~ J M TH A NT ANO DURATION OF OJS U B ~ , 1,;. `r L , MINI IZE E MCIU ~:6 ~ , 1 , , , , ~ 1 r ~ ~ . ~ ~ r. r (CUSTOM BAStN) o ~ I N , NSTR CTION EQUIPMENT SWALL - r~ , y r ~ , + ; ~ , r r ~t~'~,` ' , + 4. AT SANITARY SEWER CROSSI G CO U ' ACCESS STREAM ON BOTH SIDES FOR PIPE INSTALLATION. EQUIPMENT L ' / f ~ ' ;'rt,'' r r,~,,-; ,;,=~,<<~ - r\-,~,`,~!, J r' : ' ; I. -I~~ DRAINAGE AREA = 6,6 A , Z ~ ~ C 0 ° ~ SHALL NOT CROSS STREAM CHANNEL. WORK SHALT. B SCEOULEO DURING , "I. r ? 1 , t, ~ _ t , , - ' PERIODS ~ LOWER FLOW f I.E.. NOT IMMEOIATELt' EFORE OR AFTER r-- ~ j - r :~--1 1 1 . ~ t;~ ~ / i = F- ' , . , , ,C . - i ' , I DENUDED AREA 28 AC. z a , I ~ ,t i ~ i~ / 1 i r t , ',i'~, ,Y- i,' '~0 ~ ~i ~ ~ ~ RAIN). RIP RAP SHALL BE PLACED IN STREAM .,BOSSING. SILT - ~ ~ ; , ~ r. ,',y ' ~ ' , ' A ~ i1'I REQUIRED VOLUME = 1188(! CF W FEN ING SHA . E RE-INSTALLED AT T P OF BANK ANO AREA SHALL ~ , ,'~5 ~ i~'" ' ~ / ~ ~ : ~ II ' ~ ' ~ . ' . ~ ~ ' ' 4 ~ ~ BEE TABILIZ:~ MMEDIATE`Y AFTER IN TALLAT[C'N OF SEWER P1P1NGr `~y,-r ~'~.W.~SE, I~, ' ' ' , l '7 I - ~ t ~ , , „ J , F . I; I , VOLUME PROVIDED = 12,168 CF i ' AT RDA. N S MMER MEADOWS ORiVE, PIPE SHAL BE ~ ' ; --TEMPORARY SEDIMENT - , , b DWAY CROSSI C ON U r, : ~ ; - \ `;~C,L~~4RINh_ , + + 1 MM A~ Y ~ . _ INSTALLED DURING PERK OF LOW FLOW I1.£ . JOT ] EDI El ~ytl,i, BASIN NO. 3 t " " - / / , , : ~ Y~ Vii. ~ i i G ~ ~ ~ ~ + I BEFORE OR AFTER RAIN), IF THERE IS STDRMwA.tER FLOW IN THE I E:.~MIT~~'.. ~ a~ L ' ' STREAM ANN AN ARTHEN DAM SHALL B CO1v'>TRUCTED AT UPSTEAM t /f ~ / ' , ~ ~ ~ , BASIN SIZE = 39'x78' x5' DEEP I oc W I a ~ °C tip. w~ i ~ ~ gyp. ~ I I - ~ _ Z r ° ~ ~ N F CH EL AN Ow SWALL BE PUMPE ARg1JND THE WORK AREA. ` I I 1 - _ "I~ ~ ~ ~ E D O CULYE.RT D L I / t r / ~ ~ ~ , ~ , I owf . t , , THE DAM SHALL NOT ENCROAGW INTO THE NEUSE I3~IFFER. CONTRACTOR , I ~ I T ` CTiW ~ ~ ~ ~ ~ ~ ~ I, I WEIR LENGTH = 20' ~ > ct i y'GEYI - A V J3 0~1; f'ury' ? .~'t-_ - W .3 ~ 0 v ; r r SNAIL SCHEDiILE WORK TO MINIMIZE PUMPING T1MIr, REQUIRED. AFTER ; rI I ~ \ +IMIDBLBrtlonl ~ ~ i ' ~ - ~~'~x{~,,~i,. i , I I ~ , ~ 1 i~9 - ' ' PIPE AND HEADWA LS ARE CONSTRUCTED. TWE EAR HEN OAM SHALL BE ' ' I ' I ~ 50 NE R1VEA 1 ,1 tc s ~rA ` ' ; ~ , ~ ~ ~ R TED TWROUGN THE: CULVERT. TWE I + I nlfa nimurtar ~ r~ I ' ~ REMOV AWD STR~AM F Ow DI EC , ~ - ~ ~ -x~ ~ - _I I JOVEN VII TEMPORARY SEDIMENT BASIN N0.5 a DETENTION BASIN N0.2 V~fEMP ~ ~ ~ ~ a, I+ _ _ ~ / - ~t 5 to ry a D L F TH RIPARIAN FFER ~ t7 . , CULVE T PIPE: INVERT SWALL 8E Q.6 FEET BELOW. THE INVERT 0 E I rE~cl~a I ,~k` ~ ` c i i STREAM. ~ 1 \ ~ ~ ' , : I 1 g ACRES ~ r ; , . _ _ . - r ~ . _ CMP RISER -SEE SHT. C3.5) i a i 6. GRADED AREA ON NORTH SIDE OF STREAM IS FOR PLACridENT OF TOPSOIL n AND X SS MATERIAL RESULTING FROM GRADING WORK +)N SOUTH SIDE OF I ' i ~ TFIE T AM. AFTER PLACING EXCESS MATERIAL ON NURTW SIDE OF STREAM IN I ~ ~ - - ~ ' ' Y R I N T H AT TOP I PFIASE II ' ' t ` ` ~ - ~ ; - i ~ - - pRAJN44GE Af~A = 15.¢,AC. - $ VIC LAITY OF SEDIMENT BASIN N0. 4. INSTALL DI E S O DICES v i i ~ 0PE WITH TEMPORARY LOPE DRAIN FROM TOP OF "LOPE INTO ~ 1 ~ ~ ~ rf:~cfwo. - DENUDED AREA = 7.~ aC. t ~ ~t o - , I z ~ , i .rte ~ - NT N AT D ON EROSION CG`; ROL PLAN. ~ S ~ ~ ~ ' ~ IME BASIN NOr 4 AS DIC E ,~C I ~ ~ o ' ' Tr T T STOFtMWATER COLLECTION SYSTEM ALAI} PIt,..CT INLETS wITH I ~ , r r:: - - _ - t r - - REQUIRED VOLUME _ ?8,080 CF ' rt1 ' I 1 - - ~ - I - r I - I 50 NEUSE RIVER , _ - _ ~ Im W Z ' D ' T~ LACE RAVE F LTERS, SEDIMENT TRAPS OR :;'THER APPROVED I ~ 50' CITY OF ~ ~ m ~ ~ ~ IA UR S A G L TH PAN. THE FQLLOwING SWALL BE INSTALLED I , 1 ~ 1 ME S E SHOWN ON E L ~ ~ ~?URHAM B FER t ~--l- - VOLUME PROVIDED 8~0 CF ~ ~ RIPARIAN BUFFER r ~ ~._F.- ('Q W o AS PART OF THE STORM WAjER COILECTION SYSTEM. - L r I N TA ' R P FROM IN ET 6 T WARD TEMP. SEDIMENT I ~ i~,~ ` ~ . ' ~ ~ ' ~ ~ ~ Q ~ ~ - .3 z ° ~ ~ e. I 5 LL 36 l.F OF 24 C L Q P I ~ ~ '•1`~ ~ 1 t I ~ . , BASIN NO, 1. THE REMAINING 36 LF OF 24 RC CAN BE INSTALLED I a 1..~, ly ` , t TEMPORARY SEDIMENT BASIN F~O.6 r ~ ~ J • ~ ~ 30 _ - oC ~ ~ ~ AFTER SEDIMENT BASIN NOr 1 HAS BEEN REMOVED FROM SERVICE AND t ~ , ~ 1~.,\, t2 ~ ~ , , BACKFILLED+ GRADED, SEEDED+ ETC. I r ~C 0~ 1.1~ r . ~ s i l ~ 'r ~ _..I i DETENmON BASIN NO.1 wyTEI~ - - r l r ~ ' " B. GRADED SLOPES AND FILLS ARE TO BE PLANTED OR PR~3b'IDEO WITH I y ~ Y r, o ~ ~ PROTECTIVE COYER SUFFICIENT TO RE TRAIN EROSION WITHIN 15 WORKING I ? , k ~ ~ ~ ' _:,y_` fNCtM6 ~ . ~ I I ~ - 1 ~ ~ ~ : - 32,< : ~ - ~ I CMP RISER -SEE SHT. C3.45 tTTp. t / ~ r ~ j • `y.r....,,r..• 1 , ~ I I ~ ; DAYS OR 30 CALENO R DAYS WHICHEVE IS SHORTER. I \ iU . t. a\---' , I •~1, - v ~ P RMAN NT EI?OSION CONTROL I s ~ < ` ~ '33; I DRAINAGE AREA = 8.4 AC. p DlYEN53W I I N Z t_ ~ ~ 9. AS CONSTRUCTION P OGRESSES+ IN TALL E E P ~ A ) ~ 1i - ~ , , ' I r ~ , , MEASURES SUCH A5 RIP-RAP APRON .VELOCITY DISS1 ATORS CN NNEL I,^,,, ~ ,1\ ,y,,,..,; ~ 1 ~ 1 r I - TEMPORARY SEDIMENT w r,~ N ~4 . DENUDED AREA = 7.5 AC. q ~ 'p LINERS, GRAVEL~,BASE COURSE. ETC, R V N S. ~ . ~`'1 : ;'~~':i , 10r SLOPES IN XCESa OF 2.1 SHALL BE STABILIZED WITrI SWRUBS 0 I E h , ~ ~ X36 ~ ~ ~ - 1. ~ r. ~t ~ fi , ~ _ r ,~_t ; BASIN N0. 6 (DETENTION ~ a Q ~ ~ ~ , , ; ~ r REQUIRED VOLUME = 15,120 CF o Z yy p 3 . I ~ O SUCH AS GR NO JUNIPER. CREEPING BLUEBERRY. SWEETFERN OR EQUAL. ~ ~ ~ o~ ' 5 A TA 2AT ION OF STEEP SLOPES SHALL ; r T'1~ ~ v ~ ~ ~ ~ I t ' ~ ` f. SHRUB ND YINEa USED FORS B1LI ~ ~ .,~r ~ ~ o. ~ ';i IiASINNO. 1) ~ = Q , , i VOLUME PROVIDED 32,600 CF C7 o ~ ~ APPR V Y R ON C NTROLr ~ tStfUl< ~ , ~ 1.~ I 12 71 T~ 8E 0 E BY DURHAM COUNT E 05I 0 , , ~ - r C7 . ~ ~ ~ - ~ ice. t..-_ ~ f, ~ . ~ t' 11. BUILDING C STRlJC1I0N ON TOWNHOUSE UNITS 59-62 4N0 63-66 AND 12 T1 Tfl.~9-$ T ~ r~;I{ ,r ! N II I I' { i r' JQ e CtNJJSTRUCTI OF THE RETAINING WALL REMIND TNESEnUNITS CANNOT ' ~ < ~ . , v'~ ~ ~ - . ~ 1 ~ , ' ' ' ' , : I ; ; ~ ' ! ~ ;'I ~ TEMPORARY SEDIMENT BASIN N0.7 ~ oc r ~ P N HA N REM.YEO FR SERVICE ~I.. - 1t ROCEED U 1L SEDIMENT BASIN N0. 2 S BEE OM u, { ~ AND BACKFiLL D rriTH SELECT FILL. THE FOLLOWING SUMMARIZES STEPS ; ,.1'I - ,t__.-,. t., ,:,~1.~ , E r,, ~ , t { I { r, Ir er W I I' I I I o I FILTER BA I b° ~ ' I , , , , . ,I (GRAVEL ~ RIP RAP S N) o z ; . + TO BE TAKEN PRIOR TO REMOVAL OF SEDIMENT BASIN N0. 2 AND STARTING ~,,..y! - . ` I ~ ~ a , i BUILDING CONSTRl1CTION ON THESE UNITS: .t ~k ~ r~ ~~...T25 t',\ y ' ~ 3T ,r,,. i ~ l , r t ~ w~ ~ DRAINAGE AREA = 1,8 AC. ~ Z ~ + ~ q. COMPL TE INSTALLATION OF TWE STORM DRAINAGE SYSTEM. MOST OF I, ~ 1 ~,rti ' ~ ' ' TWE S ORMWA'f R lSCHARGE F OWING INTO TEMPOI?ARV SEDIMENT BASIN ,f , / I ~r, ~ ; :1 I '4 ,1•=~-- 1 ,r ,,1 ,2811 ~~Z _ o ~ 0 rn z ~a DENUDED AREA - 1,8 AC. d . fit. ~ ~ I , I ~1- ; I " -r~-~- m N . 2 w E 0 T ~HRDUGW THE STORM SYSTEM TO SEDIMENT ~ 1Y y I,, ~ O ILL BE RE-DIREC ED 12 ~ ' ` 1 I , ' t. ~ I= ~ - y , ~ I' I I W a V E ~ ~Y , _ - _ _ ~ , , I ; 2a~ I I >w a REQUIRED VOLUME 3,240 CF ~ BASIN NOr 6u / I - ~ y~ I ~ 1 ,J a~,~ ~ a ~ I ~ ~ ~ ' b. CONTACT DURHAM COUNTY EROSION CONTROL TO INSPECT THE SITE AND / ,~~i\ 't. ~ ' 1 ;,1 w~l _ t . , LtT~ , I_ oZr~> . N ~ ~ APPROVE 'fWE R MOVAL OF SEDIMENT BASIN N0~ 2r --_~r--r=~ .1, I I ' o ` ' ' ~ I E AM COUNTY EROSIOW CONTROL OFFICE. ~'t ' ;I. L ~ • C. AFTER APPROJA THE DURH r:...,.--,~ - . r +r ~ ~ VOLUME PROVIDED 3+456 CF a BACKF IL THE A N WITH SELECT FILL. ~ ca+s I ~ I' ~ _ " .r',"~ ~ r--~ ' ~ ~ rr- ' ' L I tt P TH io ~~f ± , ~I 3f I I r t ~ I. a; ~I; ,r, I ;II t ~ ~ ' ~ I , ~a I BASIN SIZE 24 x48 x4 DEEP Z ( ~ I ~ , I I. I - d. CONSTRUCT A DIVERSION DITCH AT TWE TOP E1F i E SLO E ON E _ -5_• N ; WEST SIDE Of' THE PROPOSED RETAINING WALL. ?'WE DIVERSION O1TCW '~0~~"~° °~A°I p I' _ t;~l.. I I . + Eeyl~ 1' ~ , II , ~ I , 'j , ~ -t., ~ ' 1 v 1 ' SH LD XT N FROM EAST OF TOWNHOUSE UNITS `';3-58 AND DISCHARGE I I I l I ~ ~ ; I I, I , t , I t I I ~ I~ ~~r-~-- ' - - ~I~ WEIR LENGTH = 10 o r - I- i. ~ L.I, .I y ~ b . I I I \ to ' + ~ N rJ? AS N NO. 6, -t,-- ~ t I I I ~ , ,i I O SE I I I I L r r I. a a , ~,i _ I TY OF Akl c ~ r ~ Q. CONSTRU T TIDE ETAINING WALT AND BACKF ILL TWE AREA BEHIND THE ~ 'I I +,I I,~I 1r®'I'.. `;3 ; ~ I11. 1'II 113 I 3t3.I 134 1 f 135,1 °-r , ~ i2T .128 r I I I. Irl ~ I t,l I. ECRI RETAINING W14LL. INSTALL SILT FENCING AT THJ: TOP ~ THE WALL I 1'f4 I I I I . , ~ i 4 I I, t ~ I ~ ~ ECREA r ' - - - - _ ~ PPUBL 1 C WORKS DEPARTMENT r TO R PLACE 'fW DIVERSION DITCH AT THE TOP 0!' TWE SLOPE, I. ,-~_L, 1i' I , ' ' I , I I ' J _J l_~ ~ ~ f. B IL ING CONS RUCTION MAY PROCEED AFTER THE RETAINING WALL NAS - ' I•' ! I r I p / ~ i r~`''t~ ~ - - ~ - APPROVED LL ~ 3 ;;Iqr; 3$ . - - BEN CON5TR11CTE0 AND $A KF 1LLED. I ~ ~a ` 6 . ~I,~ z4 -'I TEMPORARY SEDIMENT, ~ I ~ - _i- ~ d o 12. BUILDING CONSTRUCTION ON LO 139 CANNOT PROCEED LiNTII SEDIMENT BASIN ND. T HAS BEEN REMOVED FROM SERVICE AND 9iaGKF1LLED wITH - L ' ' ~ , ~5 `l ~'i; - _ I , BA..IN N0. 2 N NEERING A~nIG GATE Z~ ~ H , SEIEGT FILL. TWE F LOWING SUMMARIZES STEPS TO BE TAKEN PRIOR TO `r _ - snr , , . , REMOVAL OF SEDIMENT ASIN ND. T AND STARTING BUfLOING CONSTRUCTION a~lfa t• ,f, -r---=~ ~ ~ , ~ , I _ _ AI~ArnJ 4~' aNLY DATE ~ 3b~ NORM WATER 39 - _ I I , , , - ' - -2i- _i----_ o trn.t t ' p ON LOT 939: M RAINAG SYSTEM. MOST OF ,BR 'D 1 ~ a. COMPL TE INSTALLATION OF THE S10R 0 E , ~1 ~ 1 ~ -r -'--t r~- c ,`t r. '-r1 r , ~ I tRANSPORTAT ION DATE _ t~- ~l .s ~,1w _ I - ~ ~ THE S ORMWATER DISCHARGE FLOWING INTO TE:MP01'ARY SEDIMENT BASIN tr I t ~ ~ fi.3eo ~I ; . ~ , , , , rr ~ r-~-n -3 r+_-~ 1r•r~=; ~ , I b- I . t - I, i ~S I I I I : I ' I ' I ' I ~ • ~ ' ~ , (N U5 R i : 2-2- -I- - DATE NO T WiLI BE RE-DIRECTED THROUGH THE STORM SYSTEM TO SEDIMENT I I I ~ ' I `I-' ' ~ I I I , I , t I I tl' I ~ , I I tl BASIN N0. 6. I i I ~ I I I- I~ I; ' I I I ; I, I I III +4 11 tf2 l 1 a i- 109 r ~ " I ~1.. ~ ' ~ ~ 6 'F~$~.. i` ! • _ DATE Z i ° b. CtXJJTACT DURHAM COUNTY EROSION CONTROL TO INSP~CT THE SITE AND I , t1I I I I. .I ~I 1071 116.61 fbb51 I~OAI 110 11102 .101 ° APPROVE OF THE REMOVAL OF SEDIMENT 8A51N NO. ~"t.l I• I I I t. ~ ~ I r ~ I I I r , J: ,.~I'I -t'.I~''3j~t- ._.I'i,f, L, I, ,I, d ,~J`I ,I; I' to j11~ I ~ ' { r~.~. n ` z~~ I i 1 ~ . - - ~ ,I I I •i ° c. AFTER APPROVAL THE DURHAM COUNTY EROSION CONTROL OFFICE, t•. 4 t t', 1 1; I, , I I µ I BACKF ILL TH'E BASIN wITW SELECT FILL. SILT I~ENCINC SWALL BE ` ,t I ~ 4`2 '20: ~ ~ ip i '3 r ~'J r MAINTAINED BELOW THE ABANDONED BASIN. r : i LD i - -I~ r ~ ~ I ~ ~ r ~ 1 I-,.~.~. ,T J I• I ~ d. BUILDING CONSTRUCTION MAY PROCEED ON LOT 13S AFTER THE BASIN 1- " - , ' 'r'' 1 3' WAS BEEN REMOVED AND BACKFILLEDr ~ r e, 3• , ~ r ~ I U1 ' 0 l 3 ~,i„ , i~ , ' , ~ j / .I u ~ 13. WHEN CONSTRUCTION IS C~'LETE AND ALL AREAS ARE,STABILIZEO+ CALL ~ t ~ ~ I r/ FDR DNSITE INSPECTION BY THE SEDIMENTATION ANO i".ROS]ON CONTROL 1 , ~,t P^RA Y S M NT ~ C.i ©Iw~sla - OFFICE. r I ofrcNfrn,f _ 14. IF THE SITE IS APPROVED. REMOVE TEMPORARY DIYIS.ONSr SILT FENCING+ I y~ J I TEM u R ED I E v ~ I /tJ. BASIN N0. 1 ~ ' CAR ` _ ~ SEDIMENT BASINS. ETC. AND SEED, PAVE, OR RIP-RAP RESULTING t ~ w „ 1 I ~ ~ K a DISTURBS AREAS. ' TEMPORARY SEDIMENT ~ ~ ~ tlr AFTE REMOVAL OF TEMPtI~RARY SEDIMENT BASIN Ndr 1, INSTALL ~ ~S;D as ~ : $ : , , / ~ D., oFE Sip :9 . Q ~ I I ~ I / ~ ' t ' i 1 T I' ~ ~ Q'. ~ u REMAINING 36 LF QF 24 RCP FROM INLET 6 TO . ES T WfDISSIPATOR 1 BASIN N0. 7 r ! I i ; ; ;t ' ~ 1~ .`I I S N PAD. n I . b. REMOVE TEMPORARY RISER FROM 15 CMP DISCHAf;;,E PIPING IN 1 - DETENTION BASIN NOS 1 AND 2. 1 ;1 ~ i Z , s+t , 1 ~ I ~ I t ~ ~J39S ~ 3 UI ~ N 15. CALL FOR FINAL SIZE INSPECTION WHEN VEGETATIOPI IS ESTABLISHED. I c ' I I, i I ~r : a © ~ i ; , ; , so EE IF THE SITE IS APPROVED+ THE PERFORMANCE BOND, iF REQUIREOr WILL I G BE RELEASED. I ~ o----• ~ I PHASE I . .,11~ ~ ~ a I N 16. TOTAL DENUDED AREA = 25.8 ACr I ~ 1 I ~ I I1 ' by ~ LL I I' ~ - ~ , LIMITS ' ~ ~ a (r}~oreaT! j ~ l ~ i ~ , ! • ~ ~ N ND i ROCK CHECK 65' WIDE X 50` LONG X 6" DEEP , ~ I l i I I r 7 ~ I ~ 4 ,i, l i N F T W 1.; 1. SEE ENt_ARGED EROSION CONTROL PLAN ON SHEETS C3.2 APJD C3.3 I '~neu fns = ~.s er.t TEMP. GRAVEL CONSTRUCTION.--.-"_ ' l . i~ , . ` I I i to ' I ; , II ' 1 SCALE I EE r i ENTRANCE 2• SEE DETAIL FOR DETENTION BASINS NO. 1 AND NO. 2 ON SHEETS C3.4 AND C3.5 ' tq i 0, 11 r 13 14 ~I f 5+ 4 LL R N - f I aoo goo 0 - o so 100 zoo 0 C INV.-345-75 J ROCK CHECK 'SE DAM (DA = 0.2 AC) 15" w 15° RCP INV. LL I i I 1 R P INV. N 40.4 , w U, NV. =341.3 ~ -w---w--_w---w---w---w---w--w -Jw- W- -w- -w- -w- -W- -W-- -w- -w- -W- -W- r Y i.~. ...--...iM .fir .....w.Y' t.ir•......r.rrr. RP 16Vi - --7r - - RCP INJ. LL '~+w~L'tA'YI Ff'wY yYw4 w...- h'..... ...~SO =Y'~-T+ J. ? ~T..~i±s~~._..w..___. 2 ...r...~........-..-.. ~i r _ r•-^--------.... t------.._ } t5t) U8L 1 C R/W W U. cwi 1 ! P Y. ROSA BELVIN PROP LLC NY,= DANUBE LN. ~I _ _ j o I:t F , i S. R. 1648) M ZONE. R-20 ~i RCP INV. i y VACANT I INV.=345.0 z ROSA BELVIN PROP LLC RBP INV. ni I 1 a FkAMW8S\01493000\14"C3-3.DGN c e 0? wArF ot ROG 6 >_ y Michael F. Easley Governor William G. Ross, Jr., Secretary Department of Environment and Natural Resources Alan Klimek, P.E., Director Division of Water Quality November 14, 2002 Crossman Communities Attn: Mr. Mitch Huff PO Box 12033 Durham, NC 27709-2033 Subject: Stormwater Management Summer Meadows Durham County, NC DW Q# 001440 Dear Mr. Huff: This Office is in receipt of the plans dated November 7, 2002 for the stormwater management at the subject facility prepared on your behalf by Bass, Nixon and Kennedy and submitted to the Division on November 8, 2002. Staff from the Wetlands Unit reviewed the plans and found them acceptable. Please note that this approval is for water quality purposes only and shall not be construed as an approval of the design for dam/outlet structure integrity, Dam Safety, public safety, or flood attenuation purposes. If you have any questions regarding this matter, please contact Mr. Todd St. John at (919) 733-9584. cc: Mr. Todd St. John, Wetlands I-'t1 t Raleigh Regional Office David Dunn, PE, BNK, 7416 Chapel Hill Road, File YAdd . Dorney ds Unit Supervi or Raleigh, NC 27607 North Carolina Division of Water Quality, 401 Wetlands Certification Unit, 1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address) 2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location) 919-733-1786 (phone), 919-733-6893 (fax), http://h2o.enr.state.nc.us/ncwetlands/ o?o? \ NA r?Rp? r > -t o ? Michael F. Easley Governor William G. Ross, Jr., Secretary Department of Environment and Natural Resources Alan W. Klimek, PE, Director Division of Water Quality September 26, 2002 (Replaces the Approval Issued on September 12, 2002) DWQ Project # 00-1440 Durham County Page 1 of 3 Crossman Communities Attn: Mr. Mitch Huff Post Office Box 12033 Durham, NC 27709-2033 Subject Property: Summer Meadows Subdivision, Hebron Road (SR1656), Durham, NC S&EC, Inc. Project No. 00-1440 Unnamed tributary to the Eno River [03-04-01, 27-2-19.5, WS-IV (water supply) NSW CA] APPROVAL of 401 Water Quality Certification, Authorization Certificate per the Neuse River Buffer Protection Rules (15A NCAC 2B .0233) and Isolated Wetland Permit (15A NCAC 2H .1300) with ADDITIONAL CONDITIONS Dear Mr. Huff: You have our approval, in accordance with the attached conditions and those listed below, to impact wetlands, streams and buffers at the subject property as described in the "Impact Table" below and within your application received by this office on August 1, 2002. This approval shall replace the approval issued on September 12, 2002. Impact Table: Impact Site No. Wetlands (acres) Streams (feet) Buffers (square feet) Certification No. (Written Concurrence Not Required) A 0.02 - - GC3362 NW39. B 0.01 - 622 GC3362 NW39 D 0.01 - - GC3362 NW39 E 0.004 - - Isolated Wetland Permit Deemed Permitted C - 30 4,554 GC3374 NW 12 F 0.002 31 3,495 GC3374 NW 12 After reviewing your application, we have determined that the wetland and stream impacts are covered by the Division of Water Quality (DWQ) General Water Quality Certification Numbers 3362 and 3374. These Certifications allow you to use Nationwide Permit Numbers 12 and 39 when issued by the US Army Corps of Engineers (USACE). Written concurrence from the DWQ is not required under these Certifications, because the proposed impacts are less than the application thresholds identified within the Certifications. The "isolated wetland" impacts are "deemed permitted" under the Isolated Wetland Permit (15A NCAC 2H .1305). This letter shall also act as your approved Authorization Certificate for impacts to the protected riparian buffers as required under the Neuse River Buffer Protection Rules (15A NCAC 2B .0233). In addition, you should get or otherwise comply with any other federal, state and local requirements before you go ahead with your project including (but not limited to) erosion and sediment control regulations, water supply regulations and Neuse Buffer Rules (15A NCAC 2B.0233). Also, this approval will expire when the accompanying 404 permit expires unless otherwise specified in the General Certification. This approval is only valid for the purpose and design that you described in your application except as modified below. If you change your project, you must notify us and you may be required to send us a new application. If the property is sold, North Carolina Division of Water Quality, 401 Wetlands Certification Unit, 1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address) 2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location) 919-733-1786 (phone), 919-733-6893 (fax), hnp://h2o.enr.state.nc.us/ncwetlands/ DWO Project No. 00-1440 September 24, 2002 Page 2 of 3 the new owner must be given a copy of this Certification and is thereby responsible for complying with all conditions. If total fills for this project (now or in the future) exceed one acre of wetland or 150 feet of stream, compensatory mitigation may be required as described in 15A NCAC 2H .0506 (h). If total impacts to the buffers exceed 150 feet or 1/3 acre then buffer mitigation will be required as described within 15A NCAC 2B .0233. For this approval to be valid, you must follow the conditions listed in the DWQ General Water Quality Certification No. 3362 and 3374, Neuse Buffer Rule and any additional conditions listed below. Conditions: 1. Diffuse Flow (Review) An additional condition is that stormwater shall be directed to flow in a diffuse manner at non-erosive velocities through the entire protected stream buffers without re-concentrating. Additionally, a stormwater management plan for this project shall be provided to this Office before any of the impacts approved herein are conducted. The plan shall specify all stormwater discharge points, plan details, and calculations to indicate that diffuse flow through the protected buffers as described above will be achieved. If the DWQ determines that diffuse flow can not be achieved, then you are required to submit a stormwater management plan that complies with the Neuse Buffer Rule. The final, written stormwater management plan shall be approved in writing by this Office before the impacts specified in this Certification and Authorization Certificate shall occur. The stormwater management plan must include plans and specifications for stormwater management facilities that control nitrogen and attenuate flow designed according to the most recent version of the NC DENR Stormwater Best Management Practices Manual. Also, before any permanent building is occupied at the subject site, the facilities (as approved by this Office) shall be constructed and operational, and the stormwater management plan (as approved by this Office) shall be implemented. The structural stormwater practices as approved by this Office as well as drainage patterns must be maintained in perpetuity. No changes to the structural stormwater practices shall be made without written authorization from the Division of Water Quality. Please contact Mr. Todd St. John of this office at (919) 733-9584 if you have any questions related to this Condition or Condition No. 1 above. 2. Isolated Wetland Permit The fill of the isolated wetlands as described within your application are deemed permitted and shall comply with the provisions of 15A NCAC 2H .1305(b). 3. Certificate of Completion Upon completion of all work approved within the 401 Water Quality Certification or applicable Buffer Rules, and any subsequent modifications, the applicant is required to return the attached certificate of completion to the 401 /Wetlands Unit, North Carolina Division of Water Quality, 1650 Mail Service Center, Raleigh, NC, 27699-1650. 4. Deed Notifications Deed notifications or similar mechanisms shall be placed on all retained jurisdictional wetlands, waters and protective buffers in order to assure compliance for future wetland, water and buffer impact. These mechanisms shall be put in place prior to impacting any wetlands, waters and/or buffers approved for impact under this Certification Approval and Authorization Certificate. DWQ Project No. 00-1440 September 24, 2002 Page 3 of 3 If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing. You must act within 60 days of the date that you receive this letter. To ask for a hearing, send a written petition, which conforms to Chapter 150B of the North Carolina General Statutes to the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, NC 27699-6714. This certification and its conditions are final and binding unless you ask for a hearing. , This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act and the no practical alternatives determination as required under the Neuse Buffer Rule (15A NCAC 2B .0233). If you have any questions, please telephone Mr. Steve Mitchell (919) 571-4700 or Mr. Bob Zarzecki at (919) 733- 9726. Sincerely, Attachment: Certificate of Completion GC 3362 GC 3374 eKlimek, P.E. tor Cc: Todd Preuninger, S&EC, Inc., 11010 Raven Ridge Road, Raleigh, NC 27614 - FAX No. (919) 846-9467 USACE Raleigh Regulatory Field Office Steve Mitchell, DWQ Raleigh Regional Office File Copy Central Files DWQ 001440 September 24, 2002 bz BASS, NIXON & KENNEDY, INC., CONSULTING ENGINEERS 7416 CHAPEL HILL ROAD, RALEIGH, NC 27607 919/851-4422 ¦ FAX 919/851-8968 November 8, 2002 NC Dept. of Environment and Natural Resources Division of Water Quality Mr. Todd St. John 1650 Mail Service Center Raleigh, North Carolina 27699-1650 Subject: Summer Meadows Subdivision &0P DWQ Project #00-1440 Method for Achieving Diffuse Flow into Buffer 9AA), Dear Todd, Please find attached three (3) copies of a grading/drainage plan showing the proposed method of achieving diffuse flow into the buffer or providing a stormwater BMP where diffuse flow cannot be achieved as we discussed. Please note that rip rap level spreaders designed in accordance with our telephone conversation are proposed for the outlet pipes for Detention Basin Nos. 1 and 2 and also at FES-35 to achieve diffuse flow before entering into the buffer. We have also modified the storm system in the townhome area to allow the offsite stormwater discharge to flow through the site. The onsite stormwater discharge in this area will be captured and piped into a proposed grass swale BMP. We did not feel that a level spreader could be used at this location because of the existing topography in this area. It appears that stormwater flow would re-channelize shortly after passing through a level spreader; consequently, a grass swale BMP is proposed at this location. Please call me if you have any questions or need additional information. Very truly yours, KENNEDY, INC. ?777 - David L. Dunn, PE ?OF W ATFRP Michael F. Easley \0 G Governor Uj William G. Ross, Jr., Secretary j i Department of Environment and Natural Resources O Alan W. Klimek, P.E. Director Division of Water Quality November 8, 2002 David L. Dunn Bass Nixon and Kennedy 7416 Chapel Hill Road Raleigh, NC 27607 Subject: Summer Meadows DWQ Project No. 001440 Durham County Dear Mr. Dunn: The Wetlands Unit staff reviewed the stormwater management plans for the subject project and determined that additional information is necessary to complete the technical review process. The required additional information is as follows: 1. Diffuse Flow Per our discussion October 29, 2002, the stormwater management plans provided do not indicate that diffuse flow shall be achieved at all of the stormwater outlets. As such, as per the 401 Water Quality Certification and Neuse Buffer Approval dated September 24, 2002, a stormwater management plan that complies with the Neuse Buffer Rules must be submitted to and approved by this Office before any of the impacts approved therein occur. Division wetlands unit staff will strive to complete a final technical review within 10 working days of receipt of the requested information. If you have any questions or would like to discuss this project, please contact me at (919) 733- 9584. Also, please note that the NCDENR Stormwater Best Management Practices Manual, April 1999, and other documents and information can be downloaded from the Wetlands Unit web site at http://h2o.ehnr.state.nc.us/ncwetlands/. Sincerely, Todd ?t. John, E Environmental ngineer cc: Todd Preuninger, S&EC, 11010 Raven Ridge Road, Raleigh, NC 27614 Raleigh Regional Office File North Carolina Division of Water Quality, 401 Wetlands Certification Unit, 1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address) 2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location) 919-733-1786 (phone), 919-733-6893 (fax), http://h2o.enr.state.nc.us/ncwetlands/ Soil & Environmental Consultants, PA 11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: (919) 846-5900 • Fax: (919) 846-9467 www.SandEC.com Transmittal To: SA . ?-. Project #: Date: 1-=x-'--1 Project Name: ?. v c- File: We Transmit to you Herewith: Under Separate Cover: ? Drawings For your information and files ? By mail ? Specifications For comment or approval ? By courier ? Brochures or photos ? Returned for correction, resubmit ? By express ? Correspondence ? Approved as noted ® As per your request No. Copies Document No. Date Description Remarks: s ? oen If enclosures are not as listed as above, kindly notify us at once. By: r r-- Charlotte Office: Greensboro Office: Hickory Office: 236 LePhillip Court, Suite C 3817-E Lawndale Drive 710 Boston Road Concord, NC 28025 Greensboro, NC 27455 Taylorsville, NC 28681 Phone: (704) 720-9405 Phone: (336) 540-8234 Phone (828) 635-5820 BASS, NIXON & KENNEDY, INC., CONSULTING ENGINEERS 7416 CHAPEL HILL ROAD, RALEIGH, NC 27607 919/851-4422 ¦ FAX 919/851-8968 October 3, 2002 Soils & Environmental Consultants Mr. Todd Prueninger 11010 Raven Ridge Road Raleigh, North Carolina 27614 D OCT - 4 %I Subject: Summer Meadows Subdivision Response to DWQ Comments Concerning Diffuse Flow Dear Todd, It is my understanding based on our telephone conversation last week that the N.C. Division of Water Quality (DWQ) has requested that we provide additional information concerning diffuse flow into the Neuse River riparian buffers for Phase I of the Summer Meadows Subdivision in Durham, North Carolina. The following summarizes information for points of stormwater discharge for Phase I as requested. The overall Summer Meadows Subdivision consists of approximately 86.5 acres, with approximately 17.2 acres located in Phase I. The site will consist of single family residential lots with some townhomes. The site is located in the Falls/Jordan Watershed Overlay Protection District; consequently, the overall development of the site will not exceed 24 percent impervious area. The streets for the subdivision will be asphalt streets with concrete curb and gutter. Stormwater will be collected in a below ground stormwater piping system before being discharged on the site. There are five (5) points where the stormwater piping system will discharge stormwater before flowing through the riparian buffer (refer to the attached drawings for the points of discharge and stormwater piping system). The following summarizes the method of stormwater discharge at each point of discharge. Discharge Point No. 1 (Detention Basin No. 2) Discharge point No. 1 consists of approximately 92 LF of 15" CMP with a flared end section (FES). There is a 10" diameter orifice on the inlet side of the pipe to reduce the rate of stormwater discharge from the detention basin. The Q10 discharge for the basin through the 15" CMP is approximately 4.0 CFS. A Class B rip rap dissipator pad (4.0'x7.5') will be installed at the end of the 15" FES with a level spreader at the end of the dissipator pad. The level spreader will be installed in accordance with the requirements of Section 6.40 of the Erosion and Sediment Control Planning and Design Manual. Discharae Point No. 2 (Headwall at Storm Structure 1 Discharge point No. 2 consists of approximately 88 LF of 36" RCP with a headwall on each end of the pipe. There is a Class I rip rap dissipator pad (10.0'x24.0') on the outlet end of the pipe. The purpose of the 36" RCP pipe with headwalls is to allow an existing drainage channel to flow under the proposed road; consequently, the flow is already channelized on the upstream and downstream ends of the culvert. Diffuse flow cannot be provided because of existing topography. Discharae Point No. 3 (Detention Basin No. 1 Discharge point No. 3 consists of approximately 60 LF of 15" CMP with a flared end section (FES). There is a 6" diameter orifice on the inlet side of the pipe to reduce the rate of stormwater discharge from the detention basin. The Q10 discharge for the basin through the 15" CMP is approximately 3.4 CFS. A Class B rip rap dissipator pad (4.0'x7.5') will be installed at the end of the 15" FES with a level spreader at the end of the dissipator pad. The level spreader will be installed in accordance with the requirements of Section 6.40 of the Erosion and Sediment Control Planning and Design Manual. Discharae Point No. 4 (24" FES at Storm Structure Discharge point No. 4 consists of approximately 72 LF of 24" RCP with a FES at the end of the pipe. There is a Class B rip rap dissipator pad (6.0'x12.0') at the end of the FES. The stormwater piping system is directing offsite stormwater discharge from the south side of Hebron Road with some onsite discharge under a proposed road and into an existing drainage channel. Approximately 60 percent of the stormwater discharge through the pipe is offsite stormwater runoff. Stormwater under a pre-developed condition flows through an existing 18" RCP under Hebron Road and into an existing drainage swale on the site before flowing into the Neuse River buffer. The proposed stormwater system will redirect the stormwater flow from the existing drainage swale into a storm piping system before discharging back into the existing drainage channel. consequently, the flow is already channelized on the upstream and downstream ends of the stormwater piping system. Diffuse flow cannot be provided because of existing topography. The point of discharge is approximately 50 LF from the edge of the Neuse River buffer. Discharge Point No. 5 (15" FES at Storm Structure 35) Discharge point No. 5 consists of approximately 112 LF of 15" RCP with a FES at the end of the pipe. There is a Class B rip rap dissipator pad (4.0'x7.5') at the end of the FES. The discharge point for the 15" FES is approximately 70 LF from the edge of the Neuse River buffer. The ground topography from the point of discharge and through the riparian buffer is parallel to the stream channel. Diffuse flow will be obtained by using 2 the rip rap dissipator pad combined with the 70 LF of overland flow before entering the Neuse River buffer. Please call me if you have any questions or need additional information. Very truly yours, B NIX!=DY, INC. David L. Dunn, PE 3 %0 WATFRQ Michael F. Easley `C G Governor CO r William G. Ross, Jr., Secretary Department of Environment and Natural Resources O `C Alan W. Klimek, PE, Director Division of Water Quality September 12, 2002 Crossman Communities Attn: Mr. Mitch Huff Post Office Box 12033 Durham, NC 27709-2033 DWQ Project # 00-1440 Durham County Page 1 of 3 Subject Property: Summer Meadows Subdivision, Hebron Road (SR1656), Durham, NC S&EC, Inc. Project No. 00-1440 Unnamed tributary to the Eno River [03-04-01, 27-2-19.5, WS-IV (water supply) NSW CA] APPROVAL of 401 Water Quality Certification and Authorization Certificate per the Neuse River Buffer Protection Rules (15A NCAC 26 .0233) with ADDITIONAL CONDITIONS C>,? Ism A4 N CA-C a N ' [ 36-t) Dear Mr. Huff: V.? You have our approval, in accordance with the attached conditions and those listed below, to impact wetlands, streams and buffers at the subject property as described in the "Impact Table" below and within your application received by this office on August 1, 2002. Impact Table: Impact Site No. Wetlands acres Streams feet Buffers (square feet Certification No. A 0.02 - - GC3362 NW39 B 0.01 - 622 GC3362 NW39 D 0 - - GC3362 NW39 E 0.004 G O - r` - o C - 30 4,554 GC3374 NW 12 F 0.002 3 3,495 GC3374 NW 12 After reviewing your application, we have determined that the wetland and stream impacts are covered by the Division of Water Quality (DWQ) General Water Quality Certification Numbers 3362 and 3374. These Certifications allow you to use Nationwide Permit Numbers 12 and 39 when issued by the US Army Corps of Engineers (USACE). This letter shall also act as your approved Authorization Certificate for impacts to the protected riparian buffers as required under the Neuse River Buffer Protection Rules (15A NCAC 2B .0233). In addition, you should get or otherwise comply with any other federal, state and local requirements before you go ahead with your project including (but not limited to) erosion and sediment control regulations, water supply regulations and Neuse Buffer Rules (15A NCAC 213.0233). Also, this approval will expire when the accompanying 404 permit expires unless otherwise specified in the General Certification. This approval is only valid for the purpose and design that you described in your application except as modified below. If you change your project, you must notify us and you may be required to send us a new application. If the property is sold, the new owner must be given a copy of this Certification and is thereby responsible for complying with all conditions. If total fills for this project (now or in the future) exceed one acre of wetland or 150 feet of stream, compensatory mitigation may be required as described in 15A NCAC 2H .0506 (h). If total impacts to the buffers exceed 150 feet or 1/3 acre then buffer mitigation will be required as described within 15A NCAC 2B .0233. For this approval to be valid, you must follow the conditions listed in the DWQ General Water Quality Certification No. 3362 and 3374, Neuse Buffer Rule and any additional conditions listed below. ;dV North Carolina Division of Water Quality, 401 Wetlands Certification Unit, 1 s ?C X30 ?? 1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address) 2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location) 919-733-1786 (phone), 919-733-6893 (fax), http://h2o.enr.state.nc.us/ncwetlands/ DWQ Project No. 00-1440 September 12, 2002 Page 2 of 3 Conditions: 1. Diffuse Flow (Review) An additional condition is that stormwater shall be directed to flow in a diffuse manner at non-erosive velocities through the entire protected stream buffers without re-concentrating. Additionally, a stormwater management plan for this project shall be provided to this Office before any of the impacts approved herein are conducted. The plan shall specify all stormwater discharge points, plan details, and calculations to indicate that diffuse flow through the protected buffers as described above will be achieved. 2. Stormwater Management Plan 1d 4,r_ bt-4 ???. ,•??, k-A. k d; s bw., cA'A Ke ? i" A final, written stormwater management plan shall be approved in writing by this Office before the impacts specified in this Certification and Authorization Certificate shall occur. The stormwater management plan must include plans and specifications for stormwater management facilities designed to remove 850% TSS-4t, according to the most recent version of the NC DENR Stormwater Best Management Practices Manual. %_1 at, must-ba-daskjned n of the I- Those % I-?- su ..-- Also, before any permanent building is occupied at the subject site, the facilities (as -'?-meted and operational, and the stormwater management plan (as )d. The structural stormwater practices as approved by this Offi, stained in perpetuity. No changes to the structural stormw< <uthorization from the Division of Water Quality. Please contact Mr. Todd St. Jo- /V any questions related to this Condition or Condition No. 1 ab 3. Certificate of Completion Upon completion of all work a and any subsequent modifica to the 401 /Wetlands Unit, No 27699-1650. 4. Deed Notifications 'Ou x 11o &-0 I f ^ko ? o_.15 ?___ ration or applicable Buffer Rules, ittached certificate of completion wlail Service Center, Raleigh, INC, Deed notifications or similar mechanisms shall be placed on all retained jurisdictional wetlands, waters and protective buffers in order to assure compliance for future wetland, water and buffer impact. These mechanisms shall be put in place prior to impacting any wetlands, waters and/or buffers approved for impact under this Certification Approval and Authorization Certificate. If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing. You must act within 60 days of the date that you receive this letter. To ask for a hearing, send a written petition, which conforms to Chapter 150B of the North Carolina General Statutes to the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, NC 27699-6714. This certification and its conditions are final and binding unless you ask for a hearing. This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act and the no practical alternatives determination as required under the Neuse Buffer Rule (15A NCAC 2B .0233). If you have any questions, please telephone Mr. Steve Mitchell (919) 571-4700 or Mr. Bob Zarzecki at (919) 733- 9726. DWQ Project No. 00-1440 September 12, 2002 Page 2 of 3 Conditions: 1. Diffuse Flow (Review) An additional condition is that stormwater shall be directed to flow in a diffuse manner at non-erosive velocities through the entire protected stream buffers without re-concentrating. Additionally, a stormwater management plan for this project shall be provided to this Office before any of the impacts approved herein are conducted. The plan shall specify all stormwater discharge points, plan details, and calculations to indicate that diffuse flow through the protected buffers as described above will be achieved. 2. Stormwater Management Plan A final, written stormwater management plan shall be approved in writing by this Office before the impacts specified in this Certification and Authorization Certificate shall occur. The stormwater management plan must include plans and specifications for stormwater management facilities designed to remove 85% TSS according to the most recent version of the NC DENR Stormwater Best Management Practices Manual. These facilities must be designed to treat the runoff from the multi-family / townhome portion of the subdivision, unless you can provide information to DWQ's satisfaction that there will be less than 30% impervious coverage for the multi-family / townhome portion. Also, before any permanent building is occupied at the subject site, the facilities (as approved by this Office) shall be constructed and operational, and the stormwater management plan (as approved by this Office) shall be implemented. The structural stormwater practices as approved by this Office as well as drainage patterns must be maintained in perpetuity. No changes to the structural stormwater practices shall be made without written authorization from the Division of Water Quality. Please contact Mr. Todd St. John of this office at (919) 733-9584 if you have any questions related to this Condition or Condition No. 1 above. 3. Certificate of Completion Upon completion of all work approved within the 401 Water Quality Certification or applicable Buffer Rules, and any subsequent modifications, the applicant is required to return the attached certificate of completion to the 401/Wetlands Unit, North Carolina Division of Water Quality, 1650 Mail Service Center, Raleigh, NC, 27699-1650. 4. Deed Notifications Deed notifications or similar mechanisms shall be placed on all retained jurisdictional wetlands, waters and protective buffers in order to assure compliance for future wetland, water and buffer impact. These mechanisms shall be put in place prior to impacting any wetlands, waters and/or buffers approved for impact under this Certification Approval and Authorization Certificate. If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing. You must act within 60 days of the date that you receive this letter. To ask for a hearing, send a written petition, which conforms to Chapter 150B of the North Carolina General Statutes to the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, NC 27699-6714. This certification and its conditions are final and binding unless you ask for a hearing. This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act and the no practical alternatives determination as required under the Neuse Buffer Rule (15A NCAC 26 .0233). If you have any questions, please telephone Mr. Steve Mitchell (919) 571-4700 or Mr. Bob Zarzecki at (919) 733- 9726. ?F N ATFR ?C + p? ?? r > '-t o ? Michael F. Easley Governor William G. Ross, Jr., Secretary Department of Environment and Natural Resources Alan W. Klimek, PE, Director Division of Water Quality September 12, 2002 Crossman Communities Attn: Mr. Mitch Huff Post Office Box 12033 Durham, NC 27709-2033 DWQ Project # 00-1440 Durham County Page 1 of 3 Subject Property: Summer Meadows Subdivision, Hebron Road (SR1656), Durham, NC S&EC, Inc. Project No. 00-1440 Unnamed tributary to the Eno River [03-04-01, 27-2-19.5, WS-IV (water supply) NSW CA] APPROVAL of 401 Water Quality Certification and Authorization Certificate per the Neuse River Buffer Protection Rules (15A NCAC 213.0233) with ADDITIONAL CONDITIONS Dear Mr. Huff: You have our approval, in accordance with the attached conditions and those listed below, to impact wetlands, streams and buffers at the subject property as described in the "Impact Table" below and within your application received by this office on August 1, 2002. Impact Table: Impact Site No. Wetlands acres Streams feet Buffers (square feet Certification No. A 0.02 - - GC3362 NW39 B 0.01 - 622 GC3362 NW39 D 0.01 - - GC3362 NW39 E 0.004 - - GC3362 NW39 C - 30 4,554 GC3374 NW12 F 0.002 31 3,495 GC3374 NW12 After reviewing your application, we have determined that the wetland and stream impacts are covered by the Division of Water Quality (DWQ) General Water Quality Certification Numbers 3362 and 3374. These Certifications allow you to use Nationwide Permit Numbers 12 and 39 when issued by the US Army Corps of Engineers (USACE). This letter shall also act as your approved Authorization Certificate for impacts to the protected riparian buffers as required under the Neuse River Buffer Protection Rules (15A NCAC 213.0233). In addition, you should get or otherwise comply with any other federal, state and local requirements before you go ahead with your project including (but not limited to) erosion and sediment control regulations, water supply regulations and Neuse Buffer Rules (15A NCAC 26 .0233). Also, this approval will expire when the accompanying 404 permit expires unless otherwise specified in the General Certification. This approval is only valid for the purpose and design that you described in your application except as modified below. If you change your project, you must notify us and you may be required to send us a new application. If the property is sold, the new owner must be given a copy of this Certification and is thereby responsible for complying with all conditions. If total fills for this project (now or in the future) exceed one acre of wetland or 150 feet of stream, compensatory mitigation may be required as described in 15A NCAC 2H .0506 (h). If total impacts to the buffers exceed 150 feet or 1/3 acre then buffer mitigation will be required as described within 15A NCAC 2B .0233. For this approval to be valid, you must follow the conditions listed in the DWQ General Water Quality Certification No. 3362 and 3374, Neuse Buffer Rule and any additional conditions listed below. North Carolina Division of Water Quality, 401 Wetlands Certification Unit, 1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address) 2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location) 919-733-1786 (phone), 919-733-6893 (fax), hftp://h2o.enr.state.nc.us/ncwetiands/ DWQ Project No. 00-1440 September 12, 2002 Page 3 of 3 Sincerely, W. Klimek, P.E. >WQ, Director Attachment: Certificate of Completion GC 3362 GC 3374 Cc: Todd Preuninger, S&EC, Inc., 11010 Raven Ridge Road, Raleigh, NC 27614 - FAX No. (919) 846-9467 USACE Raleigh Regulatory Field Office Steve Mitchell, DWQ Raleigh Regional Office File Copy Central Files DWQ 001440 September 12, 2002 bz Date: Y Triage Check List c 8 - - Z Project Name: uMMER '??a oow,,„"<?o ?f DWQ#: os?=`yo County: DuRNAM To: ? ARO Mike Parker ? WaRO Deborah Sawyer ? FRO Ken Averitte ? WiRO Joanne Steenhuis ? MRO Mike Parker ? WSRO Jennifer Frye g RRO teve Mitchell From: sob Telephone : (919) -+33-947-co The file attached is being forwarded to your for your evaluation. Please call if you need assistance. ? Stream length impacted ? Stream determination ? Wetland determination and distance to blue-line surface waters on USFW topo maps ? Minimization/avoidance issues ? Buffer Rules (Neuse, Tar-Pamlico, Catawba, Randleman) r? ? Pond fill V ? Mitigation Ratios J' ? Ditching ? Are the stream and or wetland mitigation sites available and viable? ? Check drawings for accuracy X Is the application consistent with pre-application meetings? ? Cumulative impact concern Comments: We Age P9eAAQM „o XAug 'ttaS W%.ru -IGIE 2E?ulR?'M?1T OR DIFFUSE ELOU4 (geViEW) 0WID NOT?AiC4i eU5 I C--TT OP cookpyrrtaoj . W-ce-. Environmental US Army Corps of Engineers Raleigh Regulatory Field Office 6508 Falls of the Neuse Road, Ste. 120 Raleigh, North Carolina 27615 Attn: Mr. Todd Tugwell NCDENR - DWQ Parkview Building 2321 Crabtree Boulevard, Ste. 250 Raleigh, North Carolina 27604 Attn: Mr. John Dorney RE: Nationwide Permit 12, 39, Neuse River Buffer Compliance Request, & Courtesy Notification for Impacts to Isolated Wetlands Proposed Summer Meadows Subdivision Durham, Durham County, North Carolina S&EC Project #: 01-6517 Dear Mr. Tugwell and Mr. Dorney: On behalf of Crossman Communities of North Carolina (property owner), we hereby request authorization from the US Army Corps of Engineers (USACE) to use Nationwide Permits 12 and 39 for the subject project to cover permanent and temporary impacts to stream channels and wetlands. We also request written concurrence from the NC Division of Water Quality (NCDWQ) that the project complies with the Neuse Riparian Buffer Rules. Additionally, as a courtesy to NC-DWQ, we are providing information regarding impacts (< than 0.1acre) to isolated wetlands. A Pre-construction Notification Application (PCN) is attached, which includes an agent authorization form. The proposed project consists of the construction of a residential subdivision located on the north side of Hebron Road (SR 1656), north of Danube Lane (SR 1648) and is approximately 92 acres in size. Please refer to the USGS topographic map attached for the location of the project. S&EC conducted a detailed wetland delineation and Neuse River Basin (NRB) Riparian Buffer evaluation on the property in August 2001. Mr. Charles Brown of the NC Division of Water Quality conducted an on-site buffer determination on September 6, 2001 and the USACE conducted a site meeting in November 2001. The USACE approved our delineation (AID#200220150), copy attached, and the NC-DWQ confirmed our buffer determination (DWQ#NBRRO 01-251) as depicted on the attached overall site plan. Charlotte Office: PMB 291, 3020-1 Prosperity Church Road Charlotte, NC 28269-7197 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 Hickory Office: 910 Boston Road Taylorsville, NC 28681 Phone (828) 635-5820 Fax: (828) 635-5820 I 7OiI,;1 REVISED July 31, 2002, as requested by NC-DWQ we have withdrawn ohr-request for a stream crossing in the northeast corner of the property (Impact F) add are asking that you approve the impacts as detailed in our initial application and outlined below. Please note, a copy has also been forwarded to Mr. Steve Mitchell. July 31, 2002 S&EC Project #: 01-6517 Page 2 of 3 The client subsequently designed the proposed subdivision site plan in order to avoid jurisdictional waters and riparian buffers to the maximum extent practicable. No permanent impacts were proposed to any of the buffered channels on-site. Please see the attached site plans. Based on the site plan, construction of the proposed subdivision will result in 0.04 acres of permanent wetland impacts (Impacts A, B, and D) and 0.004 acres of impacts to isolated wetlands (Impact E). Temporary impacts include 61 linear feet (Impacts C and F-option 2) of channel impacts, and 0.0008 acres of wetland impacts (Impact F-option 2) associated with the installation of a sewer line. Please refer to the overall impact maps and the table in the PCN form for a summary of wetland impacts. Impact Justification and Avoidance A stream channel and wetland separates the northern and southern portions of the property. In order to access the northern portion of the property wetland impacts were unavoidable (Impact B). Additional wetland impacts (Impacts D, E) could not be avoided because existing topography necessitated fill slopes be placed over these areas in order to tie into the natural topography near the stream channel (see justification provided, project engineer Bass, Nixon, Kennedy, David Dunn). Total permanent wetland impacts on-site will be 0.04 acres for impacts A, B, D. Additional impacts include 0.004 acres of isolated wetlands (Impact E). The installation of a sewer line will temporarily impact 61 linear feet of stream channel (Impacts C and F-option 2), 0.0008 acres of wetlands, and 8,049 square feet of riparian buffer. Please note that sewer line parallel impacts to zone 2 of the buffer were unavoidable due to steep topography (see explanation provided by David Dunn, project engineer). The USACE's current policy requires applicants to avoid and minimize wetland and stream channel impacts to the maximum extent practicable and compensatory mitigation to offset unavoidable losses of waters of the US when impacts exceed the requirements for notification (0.10 acre) or if a discharge to a special aquatic site such as wetlands is proposed. S&EC believes that the USACE should not require compensatory mitigation because no impacts to open water are proposed. Moreover, because the proposed road crossing (Impact B) will impact a linear wetland rather than a channel, and because the client has no way to access their property without it, and all other waters of the U.S. and stream buffers on site will be preserved we do not believe mitigation should be required. NC-DWQ's current 401 Water Quality Certification policy does not require written concurrence or mitigation for wetland and stream channel impacts below 0.1 acre and 150 linear feet per project under Nationwide Permit 39. Because the proposed cumulative impacts resulting from "A, B, D, or E" do not exceed the aforementioned thresholds, 0.04 acres, and because no permanent channel impacts are proposed, S&EC believes that wetland or stream channel mitigation should not be required. Under the 401 Water Quality Certification guidelines for Nationwide Permit 39, stormwater treatment is not required for wetland and stream channel impacts below 0.1 acre and 150 linear feet July 31, 2002 S&EC Project #: 01-6517 Page 3 of 3 per project. If impacts "A, B, D, and E" are authorized, the applicant is below these thresholds (0.04 acres), therefore, stormwater treatment is not proposed and S&EC believes it should not be required. As noted above, no permanent impacts are proposed for any of the channels on-site. Current NC-DWQ stream buffer policy allows road crossing without mitigation if the impacts are less than or equal to 150 linear feet of stream channel of 1/3 acre of riparian buffer. Because the project impacts under Nationwide Permit 39 are within these thresholds, S&EC believes that riparian buffer mitigation should not be required. Sincerely, Todd Preuninger Biologist Attachments: Pre-construction (PCN) notification form Site Location Map (Figure 1) Impact Map Impact Map, Blow-ups Agent Authorization Form Impact Justification Letter from Bass, Nixon, Kennedy, dated May 22, 2002 Jurisdictional determination E-mail from Durham, dated May 16, 2002 NBRRO Letter and map Office Use Only: Form Version May 2002 USACE Action ID No. DWQ No. (If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".) 1. Processing 1. Check all of the approval(s) requested for this project: ® Section 404 Permit ® Riparian or Watershed Buffer Rules ? Section 10 Permit ® Isolated Wetland Permit from DWQ ? 401 Water Quality Certification (Courtesy Notification) 2. Nationwide, Regional or General Permit Number(s) Requested: 12,39 3. If this notification is solely a courtesy copy because written approval for the 401 Certification is not required, check here: ? 4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for mitigation of impacts (verify availability with NCWRP prior to submittal of PCN), complete section VIII and check here: ? 5. If your project is located in any of North Carolina's twenty coastal counties (listed on page 4), and the project is within a North Carolina Division of Coastal Management Area of Environmental Concern (see the top of page 2 for further details), check here: ? II. Applicant Information 1. Owner/Applicant Information Name: Crossman Communities, Attn: Mitch Huff Mailing Address: Post Office Box 12033 Durham NC 27709-2033 Telephone Number: 919-998-8500 Fax Number: E-mail Address: 2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter must be attached if the Agent has signatory authority for the owner/applicant.) Name: Todd Preunincer Company Affiliation: Soil & Environmental Consultants, PA Mailing Address: 11010 Raven Ridge Road Raleigh, North Carolina 27614 Telephone Number: 919-846-5900 Fax Number: 919-846-9467 E-mail Address: Preuninger(a)sandec.com Page 5 of 13 III. Project Information Attach a vicinity map clearly showing the location of the property with respect to local landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property boundaries and development plans in relation to surrounding properties. Both the vicinity map and site plan must include a scale and north arrow. The specific footprints of all buildings, impervious surfaces, or other facilities must be included. If possible, the maps and plans should include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion, so long as the property is clearly defined. For administrative and distribution purposes, the USACE requires information to be submitted on sheets no larger than 11 by 17-inch format; however, DWQ may accept paperwork of any size. DWQ prefers full-size construction drawings rather than a sequential sheet version of the full-size plans. If full-size plans are reduced to a small scale such that the final version is illegible, the applicant will be informed that the project has been placed on hold until decipherable maps are provided. 1. Name of project: Summer Meadows Subdivision 2. T.I.P. Project Number or State Project Number (NCDOT Only): NA 3. Property Identification Number (Tax PIN): 00834-03-31-7450, 00834-03-31-5464, 00834- 03-21-8453 00834-03-11-8496 00834-03-32-3783 4. Location County: Durham Nearest Town: Durham Subdivision name (include phase/lot number): Summer Meadows Directions to site (include road numbers, landmarks, etc.): The proposed subdivision is located in north Durham County on the north side of Hebron Road (SR 1656 at the intersection of Hebron Road and Danube Lane (1648). 5. Site coordinates, if available (UTM or Lat/Long): 036°03' 41"N, 078° 53' 21" W (Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) 6. Property size (acres): 92 acres 7. Nearest body of water (stream/river/sound/ocean/lake): Eno River 8. River Basin: (Note - this must be one of North Carolina's seventeen designated major river basins. The River Basin map is available at http://h2o.enr.state.nc.us/admin/maps/.) 9. Describe the existing conditions on the site and general land use in the vicinity of the project at the time of this application: The site is presently comprised of a mixture of pine and hardwoods. Land use in the vicinity of the project is a mixture of residential and commercial development. Page 6 of 13 10. Describe the overall project in detail, including the type of equipment to be used: The overall project consists of the construction of a residential subdivision. Equipment used on site will be consistent with heavy machinery associated with road construction. 1.1. Explain the purpose of the proposed work: The purpose of the work is to construct a residential subdivision that will serve the housing needs of a rg owing?community. IV. Prior Project History If jurisdictional determinations and/or permits have been requested and/or obtained for this project (including all prior phases of the same subdivision) in the past, please explain. Include the USACE Action ID Number, DWQ Project Number, application date, and date permits and certifications were issued or withdrawn. Provide photocopies of previously issued permits, certifications or other useful information. Describe previously approved wetland, stream and buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project, list and describe permits issued for prior segments of the same T.I.P. project, along with construction schedules. NC-DWQ Buffer Determination - September 6 2001 - DWQ#NBRRO 01-251 Jurisdictional Determination - November 2001 - AID#200220150 On-hold-Letter - July 22 2002 - DWQ#:00-1440 V. Future Project Plans Are any future permit requests anticipated for this project? If so, describe the anticipated work, and provide justification for the exclusion of this work from the current application. None anticipated VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. The applicant must also provide justification for these impacts in Section VII below. All proposed impacts, permanent and temporary, must be listed herein, and must be clearly identifiable on an accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a delineation map, whether or not impacts are proposed to these systems. Wetland and stream evaluation and delineation forms should be included as appropriate. Photographs may be included at the applicant's discretion. If this proposed impact is strictly for wetland or stream mitigation, list and describe the impact in Section VIII below. If additional space is needed for listing or description, please attach a separate sheet. 1. Provide a written description of the proposed impacts: Cumulative wetland impacts for the project will be 0.04 acres. Cumulative channel impacts for the project will be 0 linear feet. Wetland impacts consist of linear wetlands (impact A, B), headwater forest wetlands (impact Page 7 of 13 D), and isolated linear wetlands (Impact E). Temporary impacts associated with the installation of a sewer line consist of 30 and 31 linear feet of stream channel impacts and 93 square feet of wetland impacts (Impacts C & F). See table and overall map for a summary of impacts. 2. Individually list wetland impacts below: Wetland Impact Site Number indicate on ma Type of Impact* Area of Impact acres Located within 100-year Floodplain** es/no Distance to Nearest Stream linear feet Type of Wetland*** A Fill 0.02 No Approx. 200 ft Linear wetland B Fill 0.01 No 50 feet Linear wetland D Fill 0.01 No 200 feet Headwater forest E Fill 0.004 No 600 feet Isolated linear wetland F Temporary 0.002 No 10 feet Headwater forest * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding. ** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps (FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or online at http://www.fema.gov. *** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond, Carolina Bay, bog, etc.) Indicate if wetland is isolated (determination of isolation to be made by USACE only). List the total acreage (estimated) of all existing wetlands on the property: 0.53 acres Total area of wetland impact proposed: 0.04 acres 3. Individually list all intermittent and perennial stream impacts below: Stream Impact Length of Average Width Perennial or Site Number Type of Impact* Impact Stream Name** of Stream Intermittent? indicate on ma linear feet Before Impact leasespecify) Impact C Temp. excavation 30 UT to Eno River 4' intermittent Impact F Temp excavation 31 UT to Eno 4-6' intermittent * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap, dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain), stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included. Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at www.uses.eov. Several internet sites also allow direct download and printing of USGS maps (e.g., www.tol2ozone.coni, www.mapquest.com, etc.). Cumulative impacts (linear distance in feet) to all streams on site: 61 linear feet of temp. 4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic Ocean and any other water of the U.S.) below: Open Water IM pact Type of Im act* Area of Name of Waterbod Type of Waterbod Page 8 of 13 Site Number indicate on ma Impact acres (if applicable) (lake, pond, estuary, sound, bay, ocean, etc. NA NA NA NA NA List each impact separately and identify temporary impacts. Impacts include, but are not limited to: fill, excavation, dredging, flooding, drainage, bulkheads, etc. 5. Pond Creation If construction of a pond is proposed, associated wetland and stream impacts should be included above in the wetland and stream impact sections. Also, the proposed pond should be described here and illustrated on any maps included with this application. Pond to be created in (check all that apply): ? uplands ? stream ? wetlands Describe the method of construction (e.g., dam/embankment, excavation, installation of draw-down valve or spillway, etc.): NA Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): NA Size of watershed draining to pond: NA Expected pond surface area: NA VII. Impact Justification (Avoidance and Minimization) Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide information related to site constraints such as topography, building ordinances, accessibility, and financial viability of the project. The applicant may attach drawings of alternative, lower-impact site layouts, and explain why these design options were not feasible. Also discuss how impacts were minimized once the desired site plan was developed. If applicable, discuss construction techniques to be followed during construction to reduce impacts. Following the wetland delineation and buffer determination, the client developed a site plan that would avoid all jurisdictional channels and impact only a small portion of wetlands (0.04 acres). A stream channel and wetlands separate the northern and southern portions of the property. In order to access the northern portion of the property wetland impacts were unavoidable (Impact B). Additional wetland impacts (Impacts D, E) could not be avoided because existing topography necessitated fill slopes be placed over these areas in order to tie into the natural topography near the stream channel. Impact C consists of 30 linear feet of temporary channel impacts and 0.1 acres of riparian buffer impacts. Due to steep topography, a segment of the proposed easement runs parallel in Zone 2 of the buffer. Please refer to the justification letter provided by David Dunn of Bass Nixon and Kennedy, for more detailed information re ardin these impacts. VIII. Mitigation DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC Division of Water Quality for projects involving greater than or equal to one acre of impacts to freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial streams. Page 9 of 13 USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide Permits, published in the Federal Register on March 9, 2000, mitigation will be required when necessary to ensure that adverse effects to the aquatic environment are minimal. Factors including size and type of proposed impact and function and relative value of the impacted aquatic resource will be considered in determining acceptability of appropriate and practicable mitigation as proposed. Examples of mitigation that may be appropriate and practicable include, but are not limited to: reducing the size of the project; establishing and maintaining wetland and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of aquatic resource functions and values by creating, restoring, enhancing, or preserving similar functions and values, preferable in the same watershed. If mitigation is required for this project, a copy of the mitigation plan must be attached in order for USACE or DWQ to consider the application complete for processing. Any application lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as incomplete. An applicant may also choose to review the current guidelines for stream restoration in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at http://h2o.enr.state.nc.us/ncwetiands/strmgide.html. 1. Provide a brief description of the proposed mitigation plan. The description should provide as much information as possible, including, but not limited to: site location (attach directions and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet) of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view, preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a description of the current site conditions and proposed method of construction. Please attach a separate sheet if more space is needed. The USACE's current policy requires applicants to avoid and minimize wetland and stream channel impacts to the maximum extent practicable and compensatormitigation to offset unavoidable losses of waters of the US when impacts exceed the requirements for notification (0.10 acre) or if a discharge to a special aquatic site such as wetlands is proposed. S&EC believes that the USACE should not require compensatory mitigation because the wetland impacts are below the threshold required for notification. Moreover, because the proposed road crossing (Impact B) will impact a linear wetland rather than a channel, and because the client has no way to access their property without it, and all other waters of the U.S. and stream buffers on site will be preserved we do not believe mitigation should be reauired. NC-DWQ's current 401 Water Quality Certification policy does not require written concurrence or mitigation for wetland and stream channel impacts below 0.1 acre and 150 linear feet per project under Nationwide Permit 39. Because the proposed cumulative impacts resulting from "A, B, D, or E" do not exceed the aforementioned thresholds, 0.04 acres, S&EC believes that wetland or stream channel mitigation should not be required. Under the 401 Water Quality Certification guidelines for Nationwide Permit 39, stormwater treatment is not required for wetland and stream channel impacts below 0.1 acre and 150 linear feet per project. If impacts "A, B, D, E, and F-option 2" are authorized, the applicant is below these thresholds (0.04 acres), therefore, stormwater treatment is not proposed and Page 10 of 13 S&EC believes it should not be required. Current NC-DWQ stream buffer policy allows road crossing without mitigation if the impacts are less than or equal to 150 linear feet of stream channel of 1/3 acre of riparian buffer. Because no permanent impacts are proposed to channels and only 0.01 acres of riparian buffer will be impacted, we do not believe mitigation should be required. 2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration Program (NCWRP). Please note it is the applicant's responsibility to contact the NCWRP at (919) 733-5208 to determine availability and to request written approval of mitigation prior to submittal of a PCN. For additional information regarding the application process for the NCWRP, check the NCWRP website at http://h2o.enr.state.nc.us/wip/index.htm. If use of the NCWRP is proposed, please check the appropriate box on page three and provide the following information: Amount of stream mitigation requested (linear feet): NA Amount of buffer mitigation requested (square feet): NA Amount of Riparian wetland mitigation requested (acres): NA Amount of Non-riparian wetland mitigation requested (acres): NA Amount of Coastal wetland mitigation requested (acres): NA IX. Environmental Documentation (required by DWQ) Does the project involve an expenditure of public (federal/state) funds or the use of public (federal/state) land? Yes ? No If yes, does the project require preparation of an environmental document pursuant to the requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)? Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA coordinator at (919) 733-5083 to review current thresholds for environmental documentation. Yes ? No ? If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a copy of the NEPA or SEPA final approval letter. Yes ? No ? X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ) It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to required state and local buffers associated, with the project. The applicant must also provide justification for these impacts in Section VII above. All proposed impacts must be listed herein, and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ Regional Office may be included as appropriate. Photographs may also be included at the applicant's discretion. Page 11 of 13 Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Neuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify )? Yes ® No ? If you answered "yes", provide the following information: Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer mitigation is required calculate the required amount of mitigation by applying the buffer multipliers. Zone* Impact B Impact C Impact F Multiplier Required Mitigation tem orar tem aorar 1 1838 2403 3 NA 2 622 2716 1092 1.5 Total 4554 3495 * Zone 1 extends out 30 feet perpendicular from near bank of channel; Zone 2 extends an additional 20 feet from the edge of Zone 1. XI. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 2B .0242 or .0260. If required, the applicant proposes payment into the restoration fund. XII. Stormwater (required by DWQ) Describe impervious acreage (both existing and proposed) versus total acreage on the site. Discuss stormwater controls proposed in order to protect surface waters and wetlands downstream from the property. Currentlv the site is forested and does not contain impervious surface, following construction the site will have 24% impervious surface (per conversation with project engineer). Because wetland impacts are below 0.1 acres we do not believe this project requires a pre-approved stormwater plan and because impervious is < 30%. XIII. Sewage Disposal (required by DWQ) Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of wastewater generated from the proposed project, or available capacity of the subject facility. Sanitary Sewer XIV. Violations (required by DWQ) Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules? Yes ? No Page 12 of 13 Is this an after-the-fact permit application? Yes ? No XV. Other Circumstances (Optional): It is the applicant's responsibility to submit the application sufficiently in advance of desired construction dates to allow processing time for these permits. However, an applicant may choose to list constraints associated with construction or sequencing that may impose limits on work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and Threatened Species, accessibility problems, or other issues outside of the applicant's control). ,6 Applicant/Agent's Signature Date (Agent's signature is valid only if an authorization letter from the applicant is 4ovided.) Page 13 of 13 I1 wr tl ------------------------- E3 IEno 9. A torANr /// // I ?r I -. ©' OF N mcl la / /// 'f 1 E) Z) I I rij/ I ," a G Isolated WL UIw ,/® t\ © (r/ I // z i`€ ' l rr / Nf I Ava11a u.e» ( ©?7' /// I w rl.lu»Wn 11 A 1 W?E `ttS E ft "3 I m = f wr+Fl/t,c / / 1 I ?. 1 ' IK A// l I ,,WK IosnWa %/%/ wtA11 I , ;?- ?? ?.© •• 1 f Ml• ?jWzQE7E $nut /r/ a I® , Q ` 1 f ru.MR.I Zt7?3t is e ® ® 1 1 nisa I xlOZ qj 20E1 . I I ® ® 1 r I ; ?f 1 ?Qy\ /// 8? I 1 I .?. ZJEE E 1 ? \•. DRS' / i ?'" 1®. ? e'? - 1 ? ????: / 1 - \ 1 1 1 I y? ? 1 A <015 / ')x //r/ ?E UNOPENED 601 PUBt.IC R/M -?'- , 101 ' h I I /• ??? .n ?--,?--- -,-- ®e 10;0,©' fii/ I,I to ®? B e -? ®6 ® ® e A i r 1/ U?( Iii 'i// I ? 1 ?• ®? ' 'I ? ? © ©® `` ®/ / / ? I I Y y .it 1E) N. - I I 1 1 /r I 0PEN SPA •Y ® ?`I ® ® ?- I IIREC-SAYE ©Y -® I / // / / I g •? I A 0 T-AC? Y / ,1 ppj 1 1 '? 18 r-7 I t; 0 ®. ?`-e /`iii z W 4' ??? I ?.0 I ® i I I g g; E 'V /•/ WI / / 1 L- II 1 !\? \ i riv Z Al 16JAMS It a n I I >dl , cl) 4 1 1 -- ? __ I I fA -? ?? H n I I I I 00 O. - I 1? 1, ti Q' o I ' 204 1 IMPACT ZONE 2 IMPACT INNER 30' OF 01TER 20' OF STREAM IMPACT IEUSE BUFFER 1EUSE BUFFER WETLAND IMPACT ZONE TYPE IMPACT ILIM. FT.) ISO. FT.) 1SO. FT.) ISO. FT.) A WETLANDS WA WA ?- +WA 832 1 MEUSE BUFFER / N/A WA 822 ITS WETLANDS c - IEUSE BUFFER 30 1.038 2.116 WA o WETLANDS M/A WA WA No E WETLANDS WA WA WA 19l F ME ?n?R / 31 2.103 1.092 13 1 1 1 1, 1 1 1 , I LE" bKAMWAC 1 C » P-A ww AR AC F/t4 G w ,[ I I- n 1TwCC AREA I o a ` 0®C?B?®®®1 ® ® I I-" p I W a 1 I 1 I I I 1 1 1 1 1 ,• I. Y I ' I L 1 I , ' 1 1 1 1 I I ?""- 1? / 1 u u l i t I =' I 1 ? t W - I _ I I I i I ' 1 I ' 1 1 1 I , 1 1 I I II.l•M ? 1 - --------- --- ? x AO5 gay UC I I I ImSL IIY Ifrl LLC - N YY?.fI I I ??I -YV.4(,? I 4 8 I ' , ?, • r I ,. 1 I 1 I I i??.?'i?r ?/?j;? } ? ,? }?:?. I l ??'• i l? y- ? tr Iyl.4 1 I r 1 ? I ' J I I 1 /"F? f 1 ? I / ? _t I 1 1 I ( 1 ? i?' J??? .i, r ? ! it ; I 1 \ ' I ln I 1 I I ' 1 I \ 1 I I 1 1 ? i , {`{ a " r' r1I 14.126- 88- I 1 o ?IS88' 38' 01 \ \ '4?i -J!i I i I 4 11 I T, 4 15.._ W ll..' EN OF ONSTI UC; I?N .; , STA .' +? 7 } 54 '. t } 11 9/ \ ? 1 ?. ? •IF` r I I I \ _ I t SCALE I FEET IMPACT A 0 20 40 80 120 160 ZONE 1 IMPACT ZONE 2 IMPACT INNER 30' OF OUTER 20' OF STREAM IMPACT NEUSE BUFFER NEUSE BUFFER WETLAND IMPACT ZONE TYPE IMPACT (LIN. FT.) (SO. FT.) (SO. FT.) (SO. FT.) A WETLANDS N/A N/A N/A 832 BASS, NIXON & KENNEDY, INC. CONSULTING ENGINEERS •74M CHAPEL NRJ. ROAD RALMN, NORTH CAROLINA VW7 TELEPHONE: Uro1ss7-+1412. FAX: I9My51-/f5e •16W6E LIOON WILL ROAD WAKE FOREST, NOUN CAMJNA MU TEIEFHONE: I9/F1670-11M, FAX: 19+91570-z7e2 •aww.bwtl?eeem i -y I 1 c+ / 0 , -- \? 30' ZONE 1 IMPACT `w .1 r [ z ,, . ` t G 10-00 N - \ -- ------- --- --- 20 ZONE 2 IMPACT ICL 24'x 10' RIP-RAP -- - - - - - 24" DEEP ON . GEOTEXTILE FABRIC BASE pm= SCALE M FEET I M PACT B 0 15 30 80 90 120 ZONE 1 IMPACT ZONE 2 IMPACT BASS•NIXON & KENNEDY, INC. CONSULTING ENGINEERS INNER 30' OF OUTER 20' OF •74" CH"EL MU ROAD CAROUNA 27 STREAM IMPACT NEUSE BUFFER NEUSE BUFFER WETLAND IMPACT TE NOM AX M)851-SM 104M WN ZONE TYPE IMPACT (L IN. FT.) (SO. FT.) (SO. FT.) (SO. FT.) -W AU L1FOR NO ROAD WAKE REST. NOM CAROLINA 275n TEU"ONE: (MW70-1360. FAX: "W70-1312 B NEUSE BUFFER N/A N/A 622 475 'wr .bakkwxom / : / ? I !?/!/ i',? 'fir' I / IN, -3'0 A I DE' 0 C`I T.Y/OF p Ids H A'M Xk SEW EASE ZONE I TYPE IMPACT C I NEUSE BUFFER STREAM IMPACT (LIN. FT.) 30 ZONE 1 IMPACT INNER 30' OF NEUSE BUFFER (SO. FT.) 1.838 2.716 WETLAND IMPACT (SO. FT.) N/A 0 O N I .- W W U. 72 go WJ N 0 Y O N O BASS, NIXON & KENNEDY, INC. CONSULTING ENGINEERS •7416 CHAPEL HILL ROAD RALEIGH, NORTH CAROLINA 27607 TELEPHONE: (9")651-44TL, FAX: 1916)651-6966 .70605E LKON MILL ROAD WAKE FOREST. NORTH CAROLINA MV TELEPHONE: (9mW70-1360. FAX: (9")670-7362 .www.bnkkwA m ! / / i 20' ZONE 2 IMPACT 30'/ZONE 1 IMPACT I ' 20' ZONE 2 IMPACT -30, ZOtlrL 1 IMPACT -30' SANITARY SEWER EASEMENT IMPACT ?C ZONE 2 IMPACT OUTER 20' OF NEUSE BUFFER (SO. FT.) r I" ! /165/ / r r / + it 1 I? i ? J i• ;/ ??, ? I 1 1 1 I I I ? ' 1 + 1 '" '\ 'LA??D 5 SCALE M FEET IMPACT D s 0 15 30 60 90 120 S ZONE 1 IMPACT ZONE 2 IMPACT Bass. NIXON & KENNEDY, INC. CONSULTING ENGINEERS INNER 30' OF OUTER 20' OF .74N CRAM HU ROAD STREAM IMPACT NEUSE BUFFER NEUSE BUFFER WETLAND IMPACT 7SIPHNENO?"m. FAX:")@5$4PM wAM ronESr, Nortr" wrouru zrxU ZONE TYPE IMPACT (L IN. FT.) (SO. FT.) (SO. FT.) (SO. FT.) '10'0 UPON "'O "0A0 TELPHONE: (iMW0-*990, FAX: j MW70-UW D WETLANDS N/A N/A N/A 640 .......'" Isolated WE`TL.ANd$ 1 ' I tit ( \I .R ' \ ! j',I I I I I I ? ! ' I ? III , i ? \ ? \\ ? t \ ` it ' r ; I / /" 'III /' \ ? \ \ \\ ?. ? \ \ \ 1 II I ? 19,0 IMPACT E ZONE 1 IMPACT ZONE 2 IMPACT Isolated INNER 30' OF OUTER 20' OF STREAM IMPACT NEUSE BUFFER NEUSE BUFFER WETLAND IMPACT ZONE TYPE IMPACT (LIN. FT.) (SO. FT.) (SO. FT.) (SO. FT.) E WETLANDS N/A N/A N/A 191 0 F W W b W 0 O (4 O BASS, NIXON & KENNEDY, INC. CONSULTING ENGINEERS •7416 CHAPEL HILL ROAD RALEION, NORTH CAROLINA VW7 TELEPHONE: (m ) -4422 FAX: (f )M41%9 •10406E WON MIL ROAD WAKE FOREST. NORTH CAROLINA 27567 TELEPHONE: (M)670.tM FAX: IVIVX70-rm •rwrnbnklne.som r -D m N c Y _ ? I r 0 II W. rQ l t ••! i/ ,?? ilily ? ? ice, \ I ? ??--r- __?? I r; ,• A r ! /?? ,ice r I ? i ?? ! ! / / /• i .?-:?' - - ---------- --------- ice'/,j _Q 01 If 4p 2 ZOKE tMPAPIT +' .';?'? -- /%•, , ' - CL0 3DIIJRHAM F E L I I A ; , AN. SE i k EASEME 3.0,! ZONE 1. IMPACT ,.STREET / 60 F T _30 ZONd 1 JVKACj PUBL 1 C R/W t SCALE N FEET t M PACT F 0 IO 40 so 120 OPTION 2 ZONE i IMPACT ZONE 2 1 MPACT Me, finxON & KENNEDY, INC. I NNER 30' OF OUTER 20' OF Cme awa ? STREAM IMPACT NEUSE BUFFER NEUSE BUFFER WETLAND IMPACT mPOW"ui AL* er ?IiN? Mrl?n•w+l. r?uc: MMr-+H m ZONE TYPE IMPACT (LIN. FT.) (SO. FT.) (SO. FT.) (SO. FT.) .1mmA u MLNwa rk wain rausr. ramx cAwkma awe m ow. FAX: PINUS-12W NEUSE BUFFER / 31 2,413 1.582 104 ?? R' WETLANDS _ __ __ ? 10/15/2001 16:09 9199988600 11010 Raven Ridge Road •. Rslelgh, Notch Carolana 2761 AGENT AM0FdZA All Blanfcs To Be p bn B The C ent Landowner' HUFFMAN HOMES PAGE 02/02 oil & Environmental consu?ltants? ?1?A 4 • phone: (919) 846-5900 . Fax: The Department of the Army U.& Army Corps of Engineers, Wilming" District P.O. Box 1890 Wilmington, NC 28402 'I 0'1%10?z Attn: Field Office: Re: Wetlands Related Consulting and Permitting To Whom It May Concern: 1, the current ro owner, hereby designate and authorize Soil & Environmental Consultants, PA to act in my behalf as my agent in the processing of permit applications, to furnish upon uest su 1 information in support of applications, etc. from this day forward. The _ .- day of PU= . tJy/ This notification supersedes any previous correspondence concerning the agent for this project NOTICE: This authorization, for liability and professional courtesy reasons, is valid only for government officials to enter the property when accompanied by S&EC staff. You should call S&EC to arr- nge a site meeting prior to visiting the site. Print Property Owner's Name cc: Mr, John Dorney NCDENR - DWQ 2321 Crabtree Boulevard Raleigh, NC 27604 VIP 0 Property Owner's Signature cc: Mr, Todd Preuninger $oil & Environmental Consultants, PA wank *VrIi -tl, forn,. doc arlotte ti; -egnshoro Office: f 1ir??rv O ce; PNO 291, 3020-I Prosperity Church Road 3817-E Lawndale Drive 910 Boston Road Charlotte, NC 28269-7197 Greensboro, NC 27455 ]hy)orsville, NC 28681 Phone: (704) 720.9405 Phone: (336) 540-8234 Phone (828) 635-5820 1Pnv• (7(141720-9406 Pax: (336) 540-8235 Fax: (828) 635-5820 Phone: Project Name/ Description: SUS Date: b ()57/(3 / ?, LI 0+ .^, 246 /?I i ?? L;h ?) _ '?? 1s ? Il •, ?J?f,`? ?( ;I! ????r) ? ••?•'`''`-? III ?'?????J ,?? •, ,r ? r•?? f, / ? ;1? ,?''-? ` / ?J k ram„,. .?? iI ) A ?_?.:,? J _ t 1) ,^ } ?i •I^ r 1? r 6 ????rv / I 300 Hol ' -ate , 6• ?`--' \?? ? ?? \\ -o PA e NORTHWEST DURHAM, N. C. SW/4 DURHAM NORTH 15' OUADRANOLE 36078-A8-TF-024 14 1973 PHOTOREVISED 1987 DMA 5258 ill SW-SERIES `842 Project #: Scale: >° = sooo 01-6517 Project ct Figure 1- USGS Quad Pro Date: Soil & Environmental Consultants, Inc. Mgr.: JB 04/01 Summer Meadow 11010 Raven Ridge Rd.• Raleigh, NC 27614 Homes by Huff Durham, Durham County, NC (919) 846-5900 • (919) 846-9467 Web Page: www.SandEC.com ... \J h wafer Project #: Scale: 01-6517 1" =1320' Project Date: Mgr.: JB 8124/01 Figure 2 - Soil Survey Summer Meadow Homes by Huff Durham, Durham County, NC ® Soil & Environmental Consultants, Inc. 11010 Raven Ridge Rd.- Raleigh, NC 27614 "a (919) 846-5900 • (919) 846-9467 `? Web Page: www.SandEC.com U.S. ARMY CORPS OF ENGINEERS Wilmington District P)r Action ID: 200220150 Property Owner Crossman Communities of NC NOTIFICATION OF JURISDICTIONAL DETERMINATION Attn: Mitch Huff Address Post Office Box 12033 Durham. NC 27709-2033 Telephone Number 919-998-8500 County: Durham Authorized Agent Soil & Environmental Consultants, Inc. Attn: Todd Preuninger Address 11010 Raven Ridge Road Raleigh, NC 27614 Telephone Number 919-846-5900 Size and Location of Property (waterbody, Highway name/number, town, etc.): The property is approximately 92 acres in size, and is located north of the intersection of Hebron Road and Duke Lane, in Durham, North Carolina. Basis for Determination: The site contains wetlands and stream channels with indicators of ordinary high water marks, located adjacent to unnamed tributaries of the Eno River, above headwaters, in the Neuse River Basin. The stream channels located on site are intermittent and do not contain important aquatic function in any portion within the property boundaries. Please note that isolated waters and wetlands are present on the property that are not subject to Department of the Army permit requirements. Indicate Which of the Following Apply: There are waters of the U.S., to include wetlands, on the above described property which we strongly suggest should be delineated and surveyed. The surveyed wetland lines must be verified by our staff before the Corps will make a final jurisdictional determination on your property. Because of the size of your property and our present workload, our identification and delineation of your wetlands cannot be accomplished in a timely manner. You may wish to obtain a consultant to obtain a more timely delineation of the wetlands. Once the consultant has flagged a wetland line on the property, Corps staff will review it, and, if it is accurate, we strongly recommend that you have the line surveyed for final approval by the Corps. The Corps will not make a final jurisdictional determination on your property without an approved survey. X The waters of the U.S., to include wetlands, on your lot have been delineated, and the limits of the Corps jurisdiction have been explained to you. Unless there is a change in the law or our published regulations, this determination may be relied upon for a period not to exceed five years from the date of this notification. There are no waters of the U.S., to include wetlands, present on the above described property which are subject to the permit requirements of Section 404 of the Clean Water Act (33 USC 1344). Unless there is a change in the law or our published regulations, this determination may be relied upon for a period not to exceed five years from the date of this notification. Placement of dredged or fill material in wetlands on this property without a Department of the Army Permit is in most cases a violation of Section 301 of the Clean Water Act (33 USC 1311). A permit is not required for work on the property restricted entirely to existing high ground. If you have any questions regarding the Corps of Engineers regulatory program, please contact Todd Tugwell at tele hone / 919 876 - 8441 extension 26 Project Manager Signature Date November 16, 2001 Expiratio Date November 16, 2006 SURVEY PLAT OR FIELD SKETCH OF THE DESCRIBED PROPERTY AND THE WETLAND DELINEATION FORM MUST BE ATTACHED TO THE YELLOW (FILE) COPY OF THIS FORM. MAY-22-2002 11:34 BASS, NIXON & KENNEDY, INC., CONSULTING ENGINEERS 7416 CHAPEL HILL ROAD, RALEIGH, NC 27607 9191851-4422 ¦ FAX 919/851-8968 May 22, 2002 Soil & Environmental Consultants, PA Mr. Todd Preuninger 11010 Raven Ridge Raleigh, North Carolina 27614 Subject: Summer Meadows Subdivision Wetiand/Neuse Buffer Impact Map Dear Todd, P. 02/02 As we discussed earlier today, the proposed sanitary sewer outfall for the Summer Meadows Subdivision encroaches into.Zone 2 of the Neuse River Buffer because of the topography parallel to the buffer and along the alignment of the proposed sewer outfall. Shifting the sewer outfall away from the buffer is not feasible due to the significant slopes and the depth of the sewer main. You also had questions regarding wetland impact D on the east side of lots 164 and 165. The existing topography on the west side of the stream in this area is very steep. In order to construct the street and lots, fill slope will have to be placed over the existing wetland in this area to tie the proposed street grade into the natural topography on the west side of the Neuse Buffer Please call me if you have any questions or need additional information. Very truly yours, BASS, NIXON AND KENNEDY, INC. ?.? ?DaL. Dunn, PE Preuninger cFrom: Danner, Teri [tdanner@ci.durham.nc.us] Sent: Thursday, May 16, 2002 4:29 PM To: preuninger@sandec.com Subject: Summer Meadows Subdivision Todd, Steve Medlin asked me to follow up with you on this. The connection through Felicia Street was shown on the zoning development plan and we have no choice but to require it. The extension of Felicia into this project is in keeping with the Durham elected boards' policies of requiring that new neighborhoods be connected to surrounding properties, and especially to adjoining stubouts, such as this one. However, we have put a condition on the site plan that the end of Felicia Street will be barricaded until construction of the connecting road is complete and no construction access will be permitted via Felicia Street. Hope this helps. Please let me know if you need more information or need it in a different format. Teri Danner, ASLA, AICP Senior Planner Durham City County Planning Department Durham, NC 27701 919-560-4137 tdanner@ci.durham.nc.us State of North Carolina Department of Environment and Natural Resources Raleigh Regional Office DIVISION OF WATER QUALITY Michael F. Easley, Governor William G. Ross, Secretary October 5, 2001 Jennifer Burdette Soil and Environmental Consultants, PA 11010 Raven Ridge Road Raleigh, NC 27614 NCDENR NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES Subject: Neuse River Basin Riparian Buffer Rules NBRRO 01-251 Summer Meadow (Hebron Road) S&EC Project # 01-6517 Durham County Dear Ms. Burdette: On September 6, 2001 I conducted a site visit of the features involved in the above referenced project. It was determined that channels present on the property and shown either on the Durham County Soil Survey and/or the USGS Northwest Durham, NC Quadrangle map are subject to protection under the Neuse River Basin: Nutrient Sensitive Waters Management Strategy; Protection and Maintenance of Existing Riparian Areas, NCAC T15A:02B .0233. The specific portions of the channels subject to the buffer rules include feature A (flag #187 -187A and 187B to the confluence with feature B) and feature B (flag #18 through #153 and flag #123 downstream and off of the subject property), which are shown on the attached maps. These channels are unnamed tributaries of the Eno River. The feature marked C is not subject to the rule. This office has assigned the reference number NBRRO 01-251 to this project: Thank you for your attention to this matter and if this office can be of any assistance or if you questions concerning this letter , please contact me at (919) 571-4700 ext 237. Sincerely, harles Brown Environmental Specialist cc: John Dorney - Wetlands Unit \neusebuf.let/nbro 125 Llet 1628 Mail Service Center, Raleigh, NC 27699-1628 Telephone (919)571-4700 FAX (919)571-4718 An Equal Opportunity Affirmative Action Employer 50% recycled/10% post-consumer paper Triage Check List Date: 8-7-oz Project Name: 6 umtAeK "'\wPA*wS s/o DWQ#: oo-iyyo County: OuRHAM To: ? ARO Mike Parker ? FRO Ken Averitte ? MRO Mike P er RRO teve Mitche 1 From: IS,* ? WaRO ? WiRO ? WSRO Deborah Sawyer Joanne Steenhuis Jennifer Frye Telephone : (919) 133 - 54zco The file attached is being forwarded to your for your evaluation. Please call if you need assistance. ? Stream length impacted ? Stream determination ? Wetland determination and distance to blue-line surface waters on USFW topo maps ? Minimization/avoidance issues ? Buffer Rules (Neuse, Tar-Pamlico, Catawba, Randleman) ? Pond fill ? Mitigation Ratios ? Ditching ? Are the stream and or wetland mitigation sites available and viable? ? Check drawings for accuracy Is the application consistent with pre-application meetings? ? Cumulative impact concern Comments: A%-rc_k4n.L t We Axq pKeman in x% ue nvs wix% -ME 9ft6tCt4'M?MT OF DWPUS-6 FWW (ReViEW) 0WV0 No't?a?c 4? eua % ceRrr Ov "ApU ry"i . WZC , If 9 I )JO i? q 07/23/2002 08:26 9198469467 5&EC PAGE 01 7Soil & Enrvironmental Consultants, PA North Carolina 27614 • Phone. (919) 846-5900 pax; (919) 11010 Ravea Ridge Road Raleigh, www.SandEC.com FACSIIVI< LE STET FAX N0. (919) 846-9467 DATE: project Number j(oS -- CC: TO: NAME:. COMPANY: =A, XSI PAX NUMBER: The following items are being faxed. For Your Comments/Approval Per Our Conversation Please Advise Would Like To Discuss HARD COPY SENT: US Regular Mail Overnight SUBJECT: So Number of pages including transmittal sheet: ?For Your information Per Your Request /Please Call ,/Please Handle Hand Delivery No Hard Copy Sent REMARKS: IF YOU HAVE ANY QUESTIONS OR PRO13A MS WITH THIS TRANSWSSION, PLEASE CONTACT *CONMEN'L'T.ALITV NOTICE* This transmission is intended only for the use of the individual or entity to which it is addressed and may contain jttformatioo that is privileged sad confidential, if the reader of this message is not the intended recipient, you are hereby notified that any disclosure, distribution or copying of this inforination is strictly prohibited. If you have received this transmission in error, please notify us immediately by telephone and nttn the faxed documents to us at the above address via.the United States Postal Service. Gmnsbw office: Niekorn OfthCe: rherlQtte Office: 236 LoPhiilip Court, Suite C 3817-E Lawndale Drive 7710 10 Boston on Road oa 2$681 Concord, NC 28025 Greensboro, NC 27455 , NC Phone: (336) 540-8234 Phone (828) 635-5820 Phone, (704)720-9405 Pax: (336) 540-8235 Pax: (828) 635-5820 Fax: (704)720-9406 07/23/2002 08:26 9198469467 5&EC PAGE 02 MEMORANDUM TO: JOIN DOWER - NC DWQ FROM: TODD PUUNINGtR- SOIL & ENVIRONMENTAL CONSULTANB, PA SUBJECT: SUMIvIP.RMEAD0VS-DWQ#--M1440 DATE- 7/23/02 CC: Although I have not received written notice, it is my understanding that the proposed Sutmnvr Meadows subdivision has been placed on `hold' due to the fact that there may be a practical alternative to a stream crossing (Impact F - 252 linear feet of stream impact). We would like to withdraw the request for this crossing and ask that you approve the following impacts for Phase I of the project as described in our application dated May 31, 2002. The following is a list of proposed impacts: - 751.f. NW1712 Utility line crassicig-Cumulative temporary channel impacts Impact C - 30 linear feet, Zone 1-1,838 sq. fn, Zone 2-2716 sq, ft. Impact F (sewer be onky, no road) - 45 linear feet, Zone 1-2,403 sq. ft., Zone 2-1,092 sq. ft., and 93 sq• ft (0.002 ac.) wetland impact NWP 39 - Road Crossing and Lot Fill - Cumulative wetland impacts 0.04 ac. Impact A - 0.02 ac. Impact B - 0.01 ac. Impact D -- 0.01 ac. Impact E - 0.0004 ac. (Isolated wetlands) Please feel free to call me at 846-5900 or 369-4891. Thanks for your time. 0\ 1?p NV / r,v\"*r t", ? .U y ? h )?) p Michael F. Easley, Governor ?0F \ ATF9 William G. Ross Jr., Secretary O pG North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E. Director r Division of Water Quality July 22, 2002 Durham County DWQ Project No. 00-1440 CERTIFIED MAIL: RETURN RECEIPT REQUESTED Mitch Huff Crossman Communities P.O. Box 12033 Durham, NC, 27709-2033 Dear Mr. Huff: On May 31, 2002, the NC Division of Water Quality received your application for a 401 Water Quality Certification and Neuse Buffer Rules approval to construct two road crossings at the proposed Summer Meadows Subdivision in Durham County. In accordance with 15A NCAC 2H .0506, a thorough inspection of the site has been conducted by Mr. Steve Mitchell of the DWQ Raleigh Regional Office. Based on this review, we have determined that significant uses would be removed or degraded by this project. Specifically, please address the following issues: 1. Two crossings of the same feature are shown on the plan drawings provided with your application. It appears that the property can be accessed with a single road crossing. We suggest that you revise your site plan to reduce the impacts so that only a single road crossing will be involved. Until the information requested in this letter is provided, I will request (by copy of this letter) that the Corps of Engineers place this project on hold. Also, this project will be placed on hold for our processing due to incomplete information (15A NCAC 2H .0507(h)). Thank you for your attention. If you have any questions, please contact Steve Mitchell in our Raleigh Regional Office at (919) 571-4700 or Cyndi Karoly in Raleigh at (919) 733-9721. Sincerely, PohnDorney JRD/cbk cc: Corps of Engineers Raleigh Regulatory Field Office Raleigh DWQ Regional Office File Copy Central Files Todd Preuninger, S&EC, 11010 Raven Ridge Road, Raleigh, NC, 27614 Teri Danner, Durham City County Planning Dept., 101 State Hall Plaza, Durham, NC, 27701 N. C. Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 (919) 733-7015 001440 . Mk Customer Service 1 800 623-7748 G? ', ?e C? ??//dam C ?d rte, , 61 \ jQj WL ? I2? Date:- 1 ?? ( 0 - To: ?RO Steve Mitchell ?FRO Ken Averitte ?VVaRO Deborah Sawyer ?WiRO Joanne Steenhuis Triage Check List Project Name Y?_? DWQ Project tuber __ Count ?WSRO Jennifer Frye ,-=;l';RO M!ke Parker L?NI ? Pele. 'olwell / FrOrll: - _ --- -? ?? ephorc: (919 733- ?.g_? The ile attached is being forwarded to you for your evaluation. F: ase call if you need assi-_:tai ice. Streza-n length impacted Stream determinatio,- ] Wetland determination and distance to blue-line surface ;,=:ers on USG1N topo maps I'll ,..[rIUinimrzation/avoidanc:e issues Er,ffer Rules (Neuse, Tar-Pamiico, Catawba, Randlemar; C..J Pond ill [ ] Mitiaation Ratios [I Ditching ? Are the stream and or wetland mitigation sites available a-: viable? ? Check drawings for accuracy ? is the application consistent with pre-application meetine - D Cumulative impact concerns / / 7- MEMORANDUM TO: John Dorney Regional Contact: Steve Mitchell Non-Discharge Branch WQ Supervisor: Date: SUBJECT: WETLAND STAFF REPORT AND RECOMMENDATIONS Facility Name Summer Meadows Project Number 00 1440 Recvd From APP Received Date 5/31/02 Project Type Recvd By Region County Durham County2 Region Raleigh 5/31 -:5f -7/ay/0? Certificates Stream Stream Impacts (ft.) Permit Wetland Wetland Wetland Stream Class Acres Feet Type Type Impact Score Index Prim. Supp. Basin Req. Req. ME 12 ? O YO N F_ 27-2-(19.5) WSIV NSWCA 30,401. F F-F_ F_ F 39 F- O YO N F-F-?? 30,401. F__ F_- I - NBR Buffers F V _0N F__F_F__[_- 30,401. F_F- Mitigation Wetland MitigationType Type Acres Feet Is Wetland Rating Sheet Attached? O Y O N Did you request more info? O Y O N Have Project Changes/Conditions Been Discussed With Applicant? O Y O N Is Mitigation required? Q Y O N Recommendation: O Issue O Issue/fond O Deny Provided by Region: Latitude (ddmmss) 360341 Longitude (ddmmss) 785321 Comments: Looks like two crossMas of the same feature. Granted one is proposed or looks like future development but toooooo bad. First set of plans had no crossing and DUrham made the develop change to use my favorite term "INTERCONNECTIVITY" DENY based upon non minimized impacts. Will WRP accept mitiaatiopermit. cc: Regional Office Central Office Page Number 1 North Carolina Department of Environment and Natural Resources Michael F. Easley, Governor William G. Ross Jr., Secretary June 19, 2002 Mr. Todd Prevninger S and E C Consultants 11010 Raven Ridge Road Raleigh, North Carolina 27614 Subject: Project: Summer Meadows Subdivision County: Durham JUN L 1 M1 l! +iy(lS 50UN TY crri 1!` r. The purpose of this letter is to notify you that the North Carolina Wetlands Restoration Program (NCWRP) is willing to accept payment for stream and riparian buffer impacts associated with the subject project. Please note that the decision by the NCWRP to accept the mitigation requirements of this project does not assure that this payment will be approved by the U.S. Army Corps of Engineers and the N.C. Division of Water Quality Wetlands/401 Unit. It is the responsibility of the applicant to contact these agencies to determine if payment to the NCWRP for impacts associated with this project is appropriate. This acceptance is valid for six months from the date of this letter. If we have not received a copy of the issued 404 Permit/401 Certification within this time frame, this acceptance will expire. Based on the information supplied by you in a letter dated June 3, 2002, the stream and riparian buffer restoration that is necessary to satisfy the compensatory mitigation requirements for this project is summarized in the following table. The maximum amount of mitigation that the NCWRP will accept for this project is also indicated in this table. Stream (linear feet Wetland acres Riparian Buffer (ft) Impact 254 Mitigation Maximum 508 35,982 The NCWRP will provide mitigation with an approved combination of stream and riparian buffer restoration, enhancement or preservation. The stream and riparian buffer mitigation will be provided as specified in the 401 Water Quality Certification and/or Section 404 Permit for impacts associated with the subject project in Cataloging Unit 03020201 of the Neuse River Basin. The mitigation will be performed in accordance with the Memorandum of Understanding between the N.C. Department of Environment and Natural Resources and the U.S. Army Corps of Engineers dated November 4, 1998. If you have any questions or need additional information, please contact Crystal Braswell at (919) 733-5208. Sincerely, Ronald E errell, Program Manager cc: Cyndi Karoly,'Wetlands/401 Unitc Todd Tugwell, USACOE Steve Mitchell, RRO Wetlands Restoration Program 1619 Mail Service Center Raleigh, NC 27699-1619 (919) 733-5208 Fax: (919) 733-5321 er NCDENR Environmental Consultants, PA Road - Raleigh, North Carolina 27614 • Phone: (919) 846-5900 • Fax: (919) 846-9467 US Army Corps of Engineers Raleigh Regulatory Field Office 6508 Falls of the Neuse Road, Ste. Raleigh, North Carolina 27615 NCDENR - DWQ Parkview Building wA - 2321 Crabtree Boulevar , Raleigh, North Carolina 27604 Attn: Mr. Todd Tugwell Attn: Mr. John Dorney RE: Nationwide Permit 12, 39, 401 Water Quality Certificatio , e River B ffer Compliance Request, & Courtesy Notification for Imp s t Isolated We ds Proposed Summer Meadows Subdivision Durham, Durham County, North Carolina C to 4L S&EC Project #: 01-6517 Dear Mr. Tugwell and Mr. Dorney: On behalf of Crossman Communities of North Carolina (property owner), we hereby request authorization from the US Army Corps of Engineers (USACE)to use Nationwide Permits 12 and 39 for the subject project to cover permanent and temporary impacts to stream channels and wetlands. We also request written concurrence from the NC Division of Water Quality (NCDWQ) that the project meets the 401 Water Quality Certification for the associated NWPs. Additionally, as a courtesy to NC-DWQ, we are providing information regarding impacts (< than 0.1 acre) to isolated wetlands. Please note that although we are including Impact F in our application, we are not sure if this crossing complies with the Neuse Buffer Rules or General Condition 19 of Nationwide Permit 39. It appears that these impacts could be avoided by simply installing a cul-de- sac at the end of the road. However, the City of Durham is requiring that our client request this impact. We asked them to justify the need for the impact and in response the e-mail dated 5/16/02 was sent (copy attached). A Pre-construction Notification Application (PCN) is attached, which includes an agent authorization form. U The proposed project consists of the construction of a residential subdivision located on the north side of Hebron Road (SR 1656), north of Danube Lane (SR 1648) and is approximately 92 acres in size. Please refer to the USGS topographic map attached for the location of the project. S&EC conducted a detailed wetland delineation and Neuse River Basin (NRB) Riparian Buffer evaluation on the property in August 2001. Mr. Charles Brown of the NC Division of Water Quality conducted an on-site buffer determination on September 6, 2001 and the USACE conducted a site meeting in Charlotte Office: Greensboro Office: Hickory Office: PMB 291, 3020-1 Prosperity Church Road 3817-E Lawndale Drive 910 Boston Road Charlotte, NC 28269-7197 Greensboro, NC 27455 Taylorsville, NC 28681 Phone: (704)720-940.5 Phone: (336) 540-8234 Phone (828) 635-5820 Fax: (704) 720-9406 Fax: (336) 540-8235 Fax: (828) 635-5820 May 31, 2002 S&EC Project #: 01-6517 Page 2 of 5 November 2001. The USACE approved our delineation (AID4200220150), copy attached, and the NC-DWQ confirmed our buffer determination (DWQ#NBRRO 01-251) as depicted on the attached overall site plan. The client subsequently designed the proposed subdivision site plan in order to avoid jurisdictional waters and riparian buffers to the maximum extent practicable. In fact, in the original site plan, no permanent impacts were proposed to any of the buffered channels on-site. Please see the attached site plans. The original plans show only a sewer crossing in the northeast corner of the property (Impact F-option 2), whereas the changes as requested by the City of Durham are shown as Impact F option-1. Based on the original design, construction of the proposed subdivision would result in 0.04 acres of permanent wetland impacts (Impacts A, B, and D) and 0.004 acres of impacts to isolated wetlands (Impact E). Temporary impacts include 75 linear feet (Impacts C and F-option 2) of channel impacts, and 0.0008 acres of wetland impacts (Impact F-option 2) associated with the installation of a sewer line. Please refer to the overall impact maps and the table in the PCN form for a summary of wetland impacts. However, when the site plan was sent to Durham County Planning for approval, they requested an additional entrance into the proposed subdivision. The additional entrance will impact 254 linear feet of a buffered channel and 0.02 acres of wetland (Impact F - option 1). This impact appears on the map because it is desired by the city of Durham in order to provide `connectivity' with the adjacent neighborhood (see attached justification from Durham Planning Dept. dated 5/16/02, via e-mail). We believe crossing "F" may violate the intent of the Neuse Buffer Rules. Specifically, there may be a practical alternative: Do not build the road. The project appears to have adequate site access via Hebron Road and another entrance connected to Denfield Street in the west. The proposed connection by the City of Durham is not a safety issue, but rather a policy of the elected officials that neighborhoods be connected to surrounding properties according to their e-mail. Based on the layout of the existing and proposed subdivisions, it does not appear that this additional entrance would benefit either of the two neighborhoods (i.e. why would one drive around the back of the neighborhood in order to reach Hebron Road when a more direct route exists). If it were to be approved, crossing "F" would impact 254 linear feet of a 4-foot-wide stream channel and 14,133 square feet (0.32 acre) of riparian buffer. We request that you indicate your willingness to approve the other necessary impacts if you decide that you cannot approve Impact F- option 1. Feel free to copy Durham via e-mail and copy us if you need further information from them prior to making you decision. However, we do not want to hold up the entire project while the impact at F is resolved. We believe crossing F (option 1) may violate General Condition 19, associated with all nationwide permits. General condition 19 requires that projects be designed in order to avoid and minimize impacts to Waters of the United States to the maximum extent practicable. It seems that two subdivision entrances (one off of Hebron Rd. and another off of Denfield St.) will provide sufficient access into the site and that additional wetland May 31, 2002 S&EC Project #: 01-6517 Page 3 of 5 impacts could be avoided. Therefore, if this is the case, we would ask the USACE to deny crossing F (option 1), based on the fact that these additional wetland and stream channel impacts could be avoided without compromising access into the proposed subdivision while approving the other impacts. Impact Justification and Avoidance - If Crossing F (option 1) were to be Denied A stream channel and wetland separates the northern and southern portions of the property. In order to access the northern portion of the property wetland impacts were unavoidable (Impact B). Additional wetland impacts (Impacts D, E) could not be avoided because existing topography necessitated fill slopes be placed over these areas in order to tie into the natural topography near the stream channel (see justification provided, project engineer Bass, Nixon, Kennedy, David Dunn). If Impact F (option 1) is denied, total permanent wetland impacts on-site will be 0.04 acres for impacts A, B, D, and F (option 2). Additional impacts include 0.004 acres of isolated wetlands (Impact E). The installation of a sewer line will temporarily impact 75 linear feet of stream channel (Impacts C and F-option 2), 0.0008 acres of wetlands, and 8,049 square feet of riparian buffer. Please note that sewer line parallel impacts to zone 2 of the buffer were unavoidable due to steep topography (see explanation provided by David Dunn, project engineer). The USACE's current policy requires applicants to avoid and minimize wetland and stream channel impacts to the maximum extent practicable and compensatory mitigation to offset unavoidable losses of waters of the US when impacts exceed the requirements for notification (0.10 acre) or if a discharge to a special aquatic site such as wetlands is proposed. S&EC believes that the USACE should not require compensatory mitigation because no impacts to open water are proposed. Moreover, because the proposed road crossing (Impact B) will impact a linear wetland rather than a channel, and because the client has no way to access their property without it, and all other waters of the U.S. and stream buffers on site will be preserved (if crossing "F" is not approved) we do not believe mitigation should be required. NC-DWQ's current 401 Water Quality Certification policy does not require written concurrence or mitigation for wetland and stream channel impacts below 0.1 acre and 150 linear feet per project under Nationwide Permit 39. Because the proposed cumulative impacts resulting from "A, B, D, or E" do not exceed the aforementioned thresholds, 0.04 acres, S&EC believes that wetland or stream channel mitigation should not be required. Under the 401 Water Quality Certification guidelines for Nationwide Permit 39, stormwater treatment is not required for wetland and stream channel impacts below 0.1 acre and 150 linear feet per project. If only crossings "A, B, D, and E" are authorized, the applicant is below these thresholds (0.04 acres), therefore, stormwater treatment is not proposed and S&EC believes it should not be required. As noted above, if crossing F (option 1) is denied, no permanent impacts are proposed for any of the channels on-site. Current NC-DWQ stream buffer policy allows road crossing without mitigation if the impacts are less than or equal to 150 linear feet of stream channel of 1/3 May 31, 2002 S&EC Project #: 01-6517 Page 4 of 5 acre of riparian buffer. Because the project impacts under Nationwide Permit 39 are within these thresholds (no channel or buffer impacts if crossing F is denied), S&EC believes that riparian buffer mitigation should not be required. Impact Justification and avoidance - If Crossing F (option 1) were to be approved If crossing F (option 1) is approved, total jurisdictional wetland impacts on-site will consist of 0.06 acres of permanent impacts, 0.004 acres of isolated wetland impacts, and 254 linear feet of channel impacts. Additional buffer impacts associated with crossing F (option 1) consist of 0.32 acres of riparian buffer. A stream channel and wetland separate the northern and southern portions of the property making wetland impacts unavoidable. Additional wetland impacts stem from the steep topography of the site (see attached explanation from Bass, Nixon, and Kennedy). The USACE's current policy requires applicants to avoid and minimize wetland and stream channel impacts to the maximum extent practicable and compensatory mitigation to offset unavoidable losses of waters of the US when impacts exceed the requirements for notification (0.10 acre) or if a discharge to a special aquatic site such as wetlands is proposed. S&EC believes that the USACE should not require compensatory mitigation because impacts to open water are below 0.1 acres and because all other waters of the U.S. and stream buffers on site will be preserved. NC-DWQ's current 401 Water Quality Certification policy does not require written concurrence or mitigation for wetland and stream channel impacts below 0.1 acre and 150 linear feet per project under Nationwide Permit 39. If approved, crossing F (option 1) will impact 254 linear feet of stream channel and riparian buffer, thus requiring notification and concurrence from the NC-DWQ. Current DWQ policy requires channel mitigation if impacts to perennial channels are greater than 150 linear feet. Based on information provided by the USACE (see attached JD) we do not believe this channel is perennial and therefore, do not feel that stream channel mitigation should be required by either agency. As noted above, the proposed road crossings will impact greater than 150 linear feet of stream and less than 1/3 acre of riparian buffer. Current NC-DWQ stream buffer policy allows road crossing without mitigation if the impacts are less than or equal to 150 linear feet of stream channel of 1/3 acre of riparian buffer. Therefore, if crossing F (option 1) were approved, 14,134 square feet (Zone 1-9,854 sq.ft., Zone 2-4,280 sq.ft.) of buffer mitigation would be required. If buffer and/or stream mitigation are required the client proposes payment into the Wetland Restoration Program. Sincerely, Todd Preuninger Biologist May 31, 2002 S&EC Project #: 01-6517 Page 5 of 5 Attachments: Pre-construction (PCN) notification form Site Location Map (Figure 1) Impact Map Impact Map, Blow-ups Agent Authorization Form Check for 401 Water Quality Certification Impact Justification Letter from Bass, Nixon, Kennedy, dated May 22, 2002 Jurisdictional determination E-mail from Durham, dated May 16, 2002 NBRRO Letter and map Office Use Only: Form Version May 2002 USACE Action ID No. DWQ No. (If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".) 1. Processing 1. Check all of the approval(s) requested for this project: ® Section 404 Permit ® Riparian or Watershed Buffer Rules ? Section 10 Permit ® Isolated Wetland Permit from DWQ ® 401 Water Quality Certification (Courtesy Notification) 2. Nationwide, Regional or General Permit Number(s) Requested: 12,39 3. If this notification is solely a courtesy copy because written approval for the 401 Certification is not required, check here: ? 4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for mitigation of impacts (verify availability with NCWRP prior to submittal of PCN), complete section VIII and check here: ® if required, may not be required 5. If your project is located in any of North Carolina's twenty coastal counties (listed on page 4), and the project is within a North Carolina Division of Coastal Management Area of Environmental Concern (see the top of page 2 for further details), check here: ? II. Applicant Information 1. Owner/Applicant Information Name: Crossman Communities Attn: Mitch Huff Mailing Address: Post Office Box 12033 Durham NC 27709-2033 Telephone Number: 919-998-8500 Fax Number: E-mail Address: 2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter must be attached if the Agent has signatory authority for the owner/applicant.) Name: Todd Preuninger Company Affiliation: Soil & Environmental Consultants PA Mailing Address: 11010 Raven Ridge Road Raleigh North Carolina 27614 Telephone Number: 919-846-5900 Fax Number: 919-846-9467 E-mail Address: Preuni gerAsandec.com Page 5 of 13 III. Project Information Attach a vicinity map clearly showing the location of the property with respect to local landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property boundaries and development plans in relation to surrounding properties. Both the vicinity map and site plan must include a scale and north arrow. The specific footprints of all buildings, impervious surfaces, or other facilities must be included. If possible, the maps and plans should include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion, so long as the property is clearly defined. For administrative and distribution purposes, the USACE requires information to be submitted on sheets no larger than 11 by 17-inch format; however, DWQ may accept paperwork of any size. DWQ prefers full-size construction drawings rather than a sequential sheet version of the full-size plans. If full-size plans are reduced to a small scale such that the final version is illegible, the applicant will be informed that the project has been placed on hold until decipherable maps are provided. 1. Name of project: Summer Meadows Subdivision 2. T.I.P. Project Number or State Project Number (NCDOT Only): NA 3. Property Identification Number (Tax PIN): 00834-03-31-7450. 00834-03-31-5464, 00834- 03-21-8453 00834-03-11-8496 00834-03-32-3783 4. Location County: Durham Nearest Town: Durham Subdivision name (include phase/lot number): Summer Meadows Directions to site (include road numbers, landmarks, etc.): The proposed subdivision is located in north Durham County on the north side of Hebron Road (SR 1656) at the intersection of Hebron Road and Danube Lane (1648). 5. Site coordinates, if available (UTM or Lat/Long): 036° 03'41"N, 078° 53' 21" W (Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) 6. Property size (acres): 92 acres 7. Nearest body of water (stream/river/sound/ocean/lake): Eno River 8. River Basin: Neuse (Note - this must be one of North Carolina's seventeen designated major river basins. The River Basin map is available at http://h2o.enr.state.nc.us/admin/mgps/.) 9. Describe the existing conditions on the site and general land use in the vicinity of the project at the time of this application: The site is presently comprised of a mixture of pine and hardwoods. Land use in the vicini of the project is a mixture of residential and commercial development. Page 6 of 13 10. Describe the overall project in detail, including the type of equipment to be used: The overall project consists of the construction of a residential subdivision. Equipment used on site will be consistent with heavy machinery associated with road construction. 11. Explain the purpose of the proposed work: The purpose of the work is to construct a residential subdivision that will serve the housing needs of a growing community. IV. Prior Project History If jurisdictional determinations and/or permits have been requested and/or obtained for this project (including all prior phases of the same subdivision) in the past, please explain. Include the USACE Action ID Number, DWQ Project Number, application date, and date permits and certifications were issued or withdrawn. Provide photocopies of previously issued permits, certifications or other useful information. Describe previously approved wetland, stream and buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project, list and describe permits issued for prior segments of the same T.I.P. project, along with construction schedules. NC-DWO Buffer Determination - September 6, 2001 - DWQ#NBRRO 01-251 Jurisdictional Determination - November 2001 - AID#200220150 V. Future Project Plans Are any future permit requests anticipated for this project? If so, describe the anticipated work, and provide justification for the exclusion of this work from the current application. None anticipated. VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. The applicant must also provide justification for these impacts in Section VII below. All proposed impacts, permanent and temporary, must be listed herein, and must be clearly identifiable on an accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a delineation map, whether or not impacts are proposed to these systems. Wetland and stream evaluation and delineation forms should be included as appropriate. Photographs may be included at the applicant's discretion. If this proposed impact is strictly for wetland or stream mitigation, list and describe the impact in Section VIII below. If additional space is needed for listing or description, please attach a separate sheet. 1. Provide a written description of the proposed impacts: Cumulative wetland impacts for the project will be 0.04 acres if crossing F (option 1) is denied and 0.06 acres if Crossing F is approved Cumulative channel impacts for the project will be 254 linear feet if Crossing F is Page 7 of 13 approved and 0 linear feet if crossing F is denied. Wetland impacts consist of linear wetlands (impact A, B), headwater forest wetlands (impact D, F), and isolated linear wetlands (Impact Q. Temporary impacts associated with the installation of a sewer line consist of 30 and 45 linear feet of stream channel impacts and 93 square feet of wetland impacts. See table and overall may for a summary of impacts. 2. Individually list wetland impacts below: Wetland Impact Area of Located within Distance to Site Number Type of Impact* Impact 100-year Floodplain** Nearest Stream Type of Wetland*** indicate on ma acres es/no linear feet A Fill 0.02 No Approx. 200 ft Linear wetland B Fill 0.01 No 50 feet Linear wetland D Fill 0.01 No 200 feet Headwater forest E Fill 0.004 No 600 feet Isolated linear wetland F (if road crossing Temporary 0.002 No 10 feet Headwater is denied) F (if road crossing Fill 0.01 No 10 feet Headwater is approved) * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding. ** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps (FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or online at littp://www.fema.gov. *** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond, Carolina Bay, bog, etc.) Indicate if wetland is isolated (determination of isolation to be made by USACE only). List the total acreage (estimated) of all existing wetlands on the property: 0.53 acres Total area of wetland impact proposed: 0.04 acres if crossing F is denied, 0.06 acres if crossing F is approved. 3. Individually list all intermittent and perennial stream impacts below: Stream Impact Site Number indicate on ma Type of Impact* Length of Impact linear feet Stream Name** Average Width of Stream Before Impact Perennial or Intermittent? leasespecify) Impact C Temp. excavation 30 UT to Eno River 4' intermittent Impact F (if road crossing is approved) Culvert 254 UT To Eno 4-6' intermittent Impact F (if road crossing is denied) Temp excavation 45 UT to Eno 4-6' intermittent * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap, dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain), stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included. Page 8 of 13 Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at www.usgs.aov. Several internet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com, www.mapquest.com, etc.). Cumulative impacts (linear distance in feet) to all streams on site: if crossing F is approved 254 linear feet, and 30 linear feet of temp. impacts. If Crossing F is denied, 75 linear feet of temp. impacts. 4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic Ocean and any other water of the U.S.) below: Open Water Impact Name of Waterbody Type of Waterbody Site Number Type of Impact* q (if applicable) (lake, pond, estuary, sound, indicate on ma ae ba ,ocean, etc. NA NA NA NA * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: fill, excavation, dredging, flooding, drainage, bulkheads, etc. 5. Pond Creation If construction of a pond is proposed, associated wetland and stream impacts should be included above in the wetland and stream impact sections. Also, the proposed pond should be described here and illustrated on any maps included with this application. Pond to be created in (check all that apply): ? uplands ? stream ? wetlands Describe the method of construction (e.g., dam/embankment, excavation, installation of draw-down valve or spillway, etc.): NA Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): NA Size of watershed draining to pond: NA Expected pond surface area: NA VII. Impact Justification (Avoidance and Minimization) Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide information related to site constraints such as topography, building ordinances, accessibility, and financial viability of the project. The applicant may attach drawings of alternative, lower-impact site layouts, and explain why these design options were not feasible. Also discuss how impacts were minimized once the desired site plan was developed. If applicable, discuss construction techniques to be followed during construction to reduce impacts. Following the wetland delineation and buffer determination, the client developed a site plan that would avoid all jurisdictional channels and impact only a small portion of wetlands (0.04 acres). However, the City of Durham requested an additional road crossing (Impact F) in order to promote `connectivity' between the proposed subdivision and the existing, neighborhood to the east. This additional crossing will potentially impact 254 linear feet of stream channel and riparian buffers. Given that two other access points into the subdivision already exist, one off of Hebron Road and another to the west off of Denfield, these additional impacts may not be warranted and we are concerned that crossing F may be denied based on the fact that a Page 9 of 13 practical alternative exists (i.e. do not build). Durham's justification for the impact is attached via a copy of an e-mail. If crossing F is denied, the only impact in this area will be the temporary excavation of 45 linear feet of stream channel, 93 sq.ft. of wetlands, and 0.08 acres of riparian buffer impacts. Impact C consists of 30 linear feet of temporary channel impacts and 0.1 acres of riparian buffer impacts. Due to steep topography, a segment of the proposed easement runs parallel in Zone 2 of the buffer. Please refer to the Justification letter provided by David Dunn, of Bass Nixon and Kennedy, for more detailed information regarding these impacts. VIII. Mitigation DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC Division of Water Quality for projects involving greater than or equal to one acre of impacts to freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial streams. USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide Permits, published in the Federal Register on March 9, 2000, mitigation will be required when necessary to ensure that adverse effects to the aquatic environment are minimal. Factors including size and type of proposed impact and function and relative value of the impacted aquatic resource will be considered in determining acceptability of appropriate and practicable mitigation as proposed. Examples of mitigation that may be appropriate and practicable include, but are not limited to: reducing the size of the project; establishing and maintaining wetland and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of aquatic resource functions and values by creating, restoring, enhancing, or preserving similar functions and values, preferable in the same watershed. If mitigation is required for this project, a copy of the mitigation plan must be attached in order for USACE or DWQ to consider the application complete for processing. Any application lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as incomplete. An applicant may also choose to review the current guidelines for stream restoration in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at htty://h2o.enr.state.nc.us/ncwetlands/strmgide.html. Provide a brief description of the proposed mitigation plan. The description should provide as much information as possible, including, but not limited to: site location (attach directions and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet) of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view, preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a description of the current site conditions and proposed method of construction. Please attach a separate sheet if more space is needed. A stream channel and wetlands separate the northern and southern portions of the property. In order to access the northern portion of the property wetland impacts were unavoidable (Impact B) Additional wetland impacts (Impacts D E) could not be avoided because existing topography necessitated fill slopes be placed over these areas in order to tie into the natural topography near the stream channel If Impact F is denied total wetland impacts on- site will be 0.04 acres and 0.0008 acres of isolated wetlands. Page 10 of 13 The USACE's current policy requires applicants to avoid and minimize wetland and stream channel impacts to the maximum extent practicable and compensatory mitigation to offset unavoidable losses of waters of the US when impacts exceed the requirements for notification (0.10 acre) or if a dischargg e to a special aquatic site such as wetlands is proposed. S&EC believes that the USACE should not require compensatory mitigation because the wetland impacts are below the threshold required for notification. Moreover, because the proposed road crossing (Impact B will impact a linear wetland rather than a channel, and because the client has no way to access their property without it, and all other waters of the U.S. and stream buffers on site will be preserved (if crossing "F" is not approved) we do not believe mitigation should be required. NC-DWG's current 401 Water Quality Certification policy does not require written concurrence or mitigation for wetland and stream channel impacts below 0.1 acre and 150 linear feet per project under Nationwide Permit 39. Because the proposed cumulative impacts resulting from crossing "A, B, D, or E" do not exceed the aforementioned thresholds, 0.04 acres, S&EC believes that wetland or stream channel mitigation should not be required. Under the 401 Water Quality Certification guidelines for Nationwide Permit 39, stormwater treatment is not required for wetland and stream channel impacts below 0.1 acre and 150 linear feet per proiect. If only crossings "A, B, D, E, and F-option 2" are authorized, the applicant is below these thresholds (0.04 acres), therefore, stormwater treatment is not proposed and S&EC believes it should not be required. Please note that if crossing F (option 1) is approved approximately 254 linear feet of intermittent stream channel will be impacted. Current DWQ policy requires mitigation for impacts >150 to perennial channels. Because this channel is intermittent and does not contain important aquatic function (please see attached JD), we do not believe mitigation should be required by either agency. As noted above the proposed road crossings will impact greater than 150 linear feet of stream and less than 1/3 acre of riparian buffer. Current NC-DWO stream buffer policy allows road crossing without mitigation if the impacts are less than or equal to 150 linear feet of stream channel of 1 /3 acre of riparian buffer. Therefore, if crossing F (option 1 were approved, 14,134 square feet (Zone 1-9,854 sq_ft., Zone 2-4,280 sq.ft.) of buffer mitigation would be required. If buffer and/or stream mitigation are required the client proposes payment into the Wetland Restoration Program 2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration Program (NCWRP). Please note it is the applicant's responsibility to contact the NCWRP at (919) 733-5208 to determine availability and to request written approval of mitigation prior to submittal of a PCN. For additional information regarding the application process for the NCWRP, check the NCWRP website at http://h2o.enr.state.nc.us/wrp/index.htm. If use of the NCWRP is proposed, please check the appropriate box on page three and provide the following information: Amount of stream mitigation requested (linear feet): NA if F (option 1) is denied, 254 feet possible but unlikely if F (option 1) is approved Amount of buffer mitigation requested (square feet): NA if F denied, 14,134 feet if crossing F (option 1) is approved Page 11 of 13 Amount of Riparian wetland mitigation requested (acres): NA Amount of Non-riparian wetland mitigation requested (acres): NA Amount of Coastal wetland mitigation requested (acres): NA IX. Environmental Documentation (required by DWQ) Does the project involve an expenditure of public (federal/state) funds or the use of public (federal/state) land? Yes ? No If yes, does the project require preparation of an environmental document pursuant to the requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)? Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA coordinator at (919) 733-5083 to review current thresholds for environmental documentation. Yes ? No ? If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a copy of the NEPA or SEPA final approval letter. Yes ? No ? X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ) It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to required state and local buffers associated with the project. The applicant must also provide justification for these impacts in Section VII above. All proposed impacts must be listed herein, and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ Regional Office may be included as appropriate. Photographs may also be included at the applicant's discretion. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify )? Yes ® No ? If you answered "yes", provide the following information: Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer mitigation is required calculate the required amount of mitigation by applying the buffer multipliers. Zone* Impact B Impact C Impact F (option 2 Impact F (option 1) Multiplier Required Mitigation 1 1838 2403 9854 3 See Below 2 622 2716 1092 4280 1.5 Total 4554 3495 14134 * Zone 1 extends out 30 feet perpendicular from near bank of channel; Zone 2 extends an Page 12 of 13 additional 20 feet from the edge of Zone 1. Please note: If the road crossing, (Impact F-option 1) is approved, 29, 562 sq. ft and 6420 sq. ft. of buffer mitigation may be required for Zone I and Zone 2 impacts , respectively. XI. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 2B .0242 or .0260. If required, the applicant proposes payment into the restoration fund. XII. Stormwater (required by DWQ) Describe impervious acreage (both existing and proposed) versus total acreage on the site. Discuss stormwater controls proposed in order to protect surface waters and wetlands downstream from the property. Currently the site is forested and does not contain impervious surface, following construction the site will have 24% impervious surface (per conversation with project engineer). neer). Because wetland impacts are below 0.1 acres we do not believe this project requires a pre-approved stormwater plan and because impervious is < 30%. XIII. Sewage Disposal (required by DWQ) Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of wastewater generated from the proposed project, or available capacity of the subject facility. Sanitary Sewer XIV. Violations (required by DWQ) Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules? Yes ? No Is this an after-the-fact permit application? Yes ? No XV. Other Circumstances (Optional): It is the applicant's responsibility to submit the application sufficiently in advance of desired construction dates to allow processing time for these permits. However, an applicant may choose to list constraints associated with construction or sequencing that may impose limits on work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and Threatened Species, accessibility problems, or other issues outside of the applicant's control). Applicant/Agent's Signature ' / Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) Page 13 of 13 t._- ---------------------?- r_- - -I I /!/ r 1? C tt/ ©10/ IMM111. RG pMMr -' p mE?(a /It/ ?-f I 1\ 8 1 r I I _ ? wnaMnt`u°i li%/ I I Isolated WL fs.itn 11// I a +K`pw" I g` -'J 0 1 1 1 I W? w iAMrMM Ifs/ r tMe°u ?. 0 / 1 I YZ. FnICIA I/?/ U I I II- 0 ' / \ E ®?` 1 I PUBLIC NMI "'FIC? I I /// wear w wM» I B ®® 0 1 I ? I . Z2 €i J? A,. Kid, -Yj MF /rt _2' p ?_ 1 I to da ULM* <0 ~ENED I / 00 /ll / I 0 E rt r (? tMMa1R // ? (,I I; 9 , 1 pa `, 'M1 rt ? I I SP ?ITRE0.3T t ®?® 0 111 ® 1 1 G?` /?i?? ?\ y ® 1, 8 1 ?®. 0 6® 0 `, ?` 110 •?/ ? / I a of ti//r I I VI t e/ ® ',e / ?e ,/'/ Jr' / I ?3m w SwtTAMn M°°. `win /?// ?' j/ \? / ® \`\vti J/ // i/'/ I I SWFAT[IOtf ?I? ' I \ \ / / ?\ II ?Ju ?1 / ?? 1 HIV w ®/ / 1 AOaA rtt VACANT w 34 I >Na. 1 I p` I Ord I l / I I m I B I I con _ > I Z 1 a I OP ZONE 1 IMPACT ZONE 2 IMPACT IN" 50' OF WIER 20' OF STKAN IMPACT METRE IRIFFER IEIRE KFFG ETLAMC IMPACT ZONE TYPE IMPACT (LIM. FT.1 (30. FT.) ISO. FT.) (30. FT.) A WETLANDS OVA M/A M/A 112 1 R / rISE 1UFFE M/A M/A II22 173 E En C METRE KFFER 30 1.SD 2.711 WA D METL"m OVA M/A OVA 110 1 Isolated WL WA M/A MIA IIt 1 IEOSE F_) 251 3451 49T TLANDS 1 . r / w (60o r tai i l l l l. r, r I I I ' -- ----+-A?-'?-- I I INTIMTAMT SLMAM i C tl 1 ' IN - owl" AREA c LEN THAN 23 Ac ¦E a I , I r I W Fpa I « I r l r I I I • n I N I I ' I ' Lr /I . I ? L__ M n•wl --------------------- , 1 - -- -- - - - -------- -------- T-- ADY IFLYIM M01 LLC , A,TO II '?, ( IMIA IE1r4 nV LEC = N 1p VACANT 1 ,{ vAtwr 1 ???? 1 ?, 1 • 1ll?,? t:M? 1 ? iT r r, r 48 47 _ I ? - l ? _ , 1 1 I II ' 461 LY'?' f ?I tr i i i 1 i! .14.26 ?e- 0 ?;v?588 38; 0)1 r T- T - V, I \ ri ?! 1 1 „e _ 1 fr \1' ! 11 1 ? LL I 4 1.6 ` ' EN OF ONST UC; If N STA.' +17:54 ; ----- . _ - 1 ' SCPLE I FEET IMPACT A 0 20 40 80 120 1B0 ZONE 1 IMPACT ZONE 2 IMPACT INNER 30' OF OUTER 20' OF STREAM IMPACT NEUSE BUFFER NEUSE BUFFER WETLAND IMPACT ZONE TYPE IMPACT (LIN. FT.) (SO. FT.) (SO. FT.) (SO. FT.) A WETLANDS N/A N/A N/A 832 000 BASS, NIXON & KENNEDY, INC. CONSULTING ENGINEERS •749 CHAPEL HU ROAD RAU3W NORTH CAROLINA 27W7 TEUB" E: (?Ma1M-4422. FAX: WIMS51-SM WAKE FOREST. NORTH CAROUNA 27597 TEU34IONE: H 1M, FAX: (WW)570-IM •vvww.bdd?ceom 2 0 „ .1 IV -6 - _r - -- + _ 30' ZONE 1 IMPACT ,w •?? Z ?., Li _ ` ?? -- 20' ZONE 2 IMPACT tr a \ j /'1 I o_ ' -?` - - -- - --lcA ?- - - 24'x 10' RIP-RAP 24" DEEP ON GEOTEXTILE J \ FABRIC BASE SCALE M FEET pmm I I M PACT B 0 15 30 60 90 120 ZONE 1 IMPACT ZONE 2 IMPACT BASS, NIXON & KENNEDY, INC. CONSULTING ENGINEERS INNER 30' OF OUTER 20' OF .74W CHAPEL HILL ROAD STREAM IMPACT NEUSE BUFFER NEUSE BUFFER WETLAND IMPACT BONE::? re AX °9"M51-fM ZONE TYPE IMPACT (L IN. FT.) (SO. FT.) (SO. FT.) (SO. FT.) -IOWSE 1°ON NI6.L ROAD WAKE FOREST. NORTH CAROLINA 27567 TELEPHONE: (fM)S70-1360, FAX: (f1f1670.13a B NEUSE BUFFER N/A N/A 622 475 'wwwbakWcmm lot 71. oo' r., C/L ( 30' fiN I DE C l T.1t` OF D UR H A1v1 N?E?CR EASE}nA',t 1 ZONE I TYPE IMPACT C I NEUSE BUFFER STREAM IMPACT (LIN. FT.) 30 ZONE 1 IMPACT INNER 30' OF NEUSE BUFFER (SO. FT.) 1.838 2.716 WETLAND IMPACT (SO. FT.) N/A io N N W W W co JW N 0 0 N 0 Ron A?0 BASS, NIXON & KENNEDY, INC. CONSULTING ENGINEERS •746 CHAPEL HILL ROAD RAL60H. NORTH CAROLINA 27607 TELU"M: 16Np51-Mt2, FAX: 191MI-27666 WAKE FOREST, NORTH CAROLM 2nU TEUWHONE: I6M*70-7360, FAX: lt"70-IN2 •wnwr,Mmk{R6A0M / / / 1, 411 / i / ?- 20' ZQXt 2 IMPACT 30'ZONE 1 IMPACT / / L / .C 20' ZONE 2 IMPACT 30' ZO\% 1 IMPACT -30' SANITARY SEWER EASEMENT MPACt --C ZONE 2 IMPACT OUTER 20' OF NEUSE BUFFER (SO. FT.) // it 1 I i / I 1 1 F TL A N D 5 SCALE IN FEET IMPACT D 0 15 30 60 90 120 . ZONE 1 I MPACT ZONE 2 IMPACT BASS, NIXON & KENNEDY, INC. INNER 30' OF OUTER 20' OF CONSULTING ENGINEERS •7416 CHAS HILL ROAD STREAM IMPACT NEUSE BUFFER NEUSE BUFFER WETLAND IMPACT HPHONE (M)M4422. Az IItm)ssi-ewes WAM FOREST, NORTH CAAOLM 27M WDIWETLANDS PE IMPACT (L IN. FT.) (SQ• FT.) (SO. FT.) (SO. FT.) -10W W tJOON Re IL WAD TBF "M: "*704M, FAX: tWP70-1362 N/A N/A N/A 640 '"""'f`°°° 10, Isolated WETLAN0$ 0 a - I 1 _ 1 , \ ?u, i nil ? / 1 r i ? IMPACT E ZONE 1 IMPACT ZONE 2 IMPACT Isolated INNER 30' OF OUTER 20' OF STREAM IMPACT NEUSE BUFFER NEUSE BUFFER WETLAND IMPACT ZONE TYPE IMPACT (LIN. FT.) (SO. FT.) (SO. FT.) (SO. FT.) E WETLANDS N/A N/A N/A 191 F W 2 W W 0 O N 0 BASS, NIXON & KENNEDY, INC. CONSULTING ENGINEERS .74M CHMNi HILL ROAD RALEIGH, NORTH CAROLINA 27M TELEPHONE: (iN?51-4 72 FAX: WN"B 7-MW WAKE FOREST. NORTH CAROLINA VW TELEPHONE: IYW)FA-U 0, FAX: 1919)570-lM •wwMJmddoc m i /Y--- --- WETLANDS- -"? ?-__/ jl _ --yn ?-T loll V i - - - - - - - - - - - - - - - - - - - - - - NA - WETLANDS", ri'V ------ v ------------- 20'///ZONE IM ACT F EC.I C '?"f-1 i' 30 i 20 (/. LM ACT - STR--EE-T J Lo I ACT 60 F T . - ti ?3 IPACT PUBLIC R/W SCALE M FEET IMPACT F 0 20 40 s0 120 160 OPTION 1 ZONE 1 IMPACT ZONE 2 IMPACT BASS, NIXON & KENNEDY, INC. INNER 30' OF OUTER 20' OF CONSULTING ENGINEERS .74W CHAPEL HILL ROAD STREAM IMPACT NEUSE BUFFER NEUSE BUFFER WETLAND IMPACT RAU90KNORTH CAROLMA VW TELEPHONE; ZONE TYPE IMPACT (L I N. FT.) (SO. FT.) (SO. FT.) (SO. FT.) .LOAD N' MILL RO FAX: t'""61?'°° WAKE FOREST, NORTH CAROLINA VW F NEUSE BUFFER / 254 9.854 4.280 49T TELEPHONE: n"is?o-u'°•FAX: t'nns7onu owwwbnkintown WETLANDS ?0-) WETLANDS ?< I --?- - i ! I?I ------ --------- ,.41'? WI pE -- --- 0' 'TY 'OF DURH'Q 29 © , S) NN- ? EWER A's T I ; -------]-' 20' /'ZONE ;2 IMPACT F E L I C I A 1 30 i? ZONE 1 IMPACT STREET + \\ --- 20' ZONE- 2 IMPACT,, 60 F T -30' ZONd 1 JMFfACJ,' ' P U B I C R A W SCALE M FEET IMPACT F 0 20 40 80 120 160 OPTION 2 ZONE 1 IMPACT ZONE 2 IMPACT BASS, NIXON do KENNEDY, INC. INNER 30' OF OUTER 20' OF CONSULnNG ENGINEERS •7H6 CHAPEL HILL ROAD STREAM IMPACT NEUSE BUFFER NEUSE BUFFER WETLAND IMPACT RALMKNORTH CAROLINA Zr5W ZONE TYPE IMPACT (L I N. FT.) (SO. FT.) (SO. FT.) (SO. FT.) .10405E LLXbO• MILiL Ro'?"AO`?`` '?"° WAIF FOREST. NORTH CAROLINA VW F NEUSE BUFFER / 45 2.403 1.092 93 TELEPHONE: In.p7o,aeo.FAx. WETLANDS 10/15/2001 16:09 9199988600 HUFFMAN HOMES PAGE 02/02 Environmental Consultants, AGENT AUTHORTZA "*94 All BlalnJcs Ta Be PiiUed In By The 9amt Landow-m-i The Department of the Army U.S. Army Corps of Engineers, Wilmington District P.O. Box 1890 Wilmington, NC 28402 Attn: Field Office: zcz?i4?-? Re: Wetlands Related Consulting and Permitting To Whom It May Concert: 1, the current PMPAM owner, hereby designate and authorize Soil & Environmental Consultants, PA to act in my behalf as my agent in the processing of permit applications, to furnish uponreques? sup 1 information in support of applications, etc. from this day forward. The 1V _ ----- day of , vim! This notification supersedes any previous contVondence concerning the agent for this project NOTICE: This authorization, for liability And professional courtesy reasons, is valid only for government officials to enter the property when accompanied by S&RC staff. You should call S&EC to anw%e a site meeting prior to visiting the site. CVVSSh,r0? J14' Print Property Owner's Name cc: Mr, John Dorney NCDENR - DWQ 2321 Crabb" Boulevard Raleigh, NC 27604 LVI Property Owner's Signature cc: Mr. Todd Preaninger Soil & Environmental Consultants, PA blank agent amth fotm.doc Charlotte ce: Greensboro Mcc: H+ckorv Office: PMB 291, 3020-I Prosperity Church Road 3817-E Lawndale Drive 910 Boston Road Charlotte, NC 28269-7197 Greensboro, NC 27455 JAylorsville, NC 28681 Phone: (704) 720-9405 Phone: (336) 540-8234 Phone (828) 635-5820 Fax: (704) 720-9406 Fax: (336) 540-8235 Fax: (828) 635-5820 Phone: l .? g - giSao e>?? Iv2 Project Name/ Description: Date: j s 1 5 6/ 4" 6 ,\- f z ' l f l 1? %?`F1 L 1 L^li ,?_? _ ?? '-'lr?-?? ? .?i•??--.4.?`_? _?? `_- ? i-? ? ? oaf ??' ?? 1-??_ ???i??1\?!? 'Oemr J ? aagg _ 3/3 2 : "- 4 6 01 _Y- Zhk vt., • D \/ 9 '? ( ` j)y??'yyc?ti/(/'r ??\\?\\? ) l11Z >N. ?• - -- o bat?e? ! ?• \/??.: mill' Vii" ?? ', ? \ - _/ \_ •II ?1 ?i I _ ?? _\? /d' / l 7 501 J II ? k// r- `1 Z IJ 300 Project /: Scale: 014517 V = 2000' Figure 1- USGS Quad Project Date: Mgr.: JB 6124101 Summer Meadow Homes by Huff Durham, Durham County, NC Soil & Environmental Consultants, Inc. 11010 Raven Ridge Rd. - Raleigh, NC 27614 (919) 846-5900 • (919) 846-9467 Web Page: www.SandEC.com NORTHWEST DURHAM, N. C. SW/4 DURHAM NORTH IS' DUADRANOLE 36078-A8-TF-024 1973 PHOTOREVISED 1987 DMA 3256 III 8W-SERIES V842 Project #: Scale: 014517 j 1" =1320' Project Date: Mgr.: JB 8/24/01 Figure 2 - Soil Survey Summer Meadow Homes by Huff Durham, Durham County, NC Soil & Environmental Consultants, Inc. 11010 Raven Ridge Rd.- Raleigh, NC 27614 (919) 846-5900 • (919) 846-9467 Web Page: www.SandEC.com U.S. ARMY CORPS OF ENGINEERS copy Wilmington District Action ID: 200220150 County: Durham 117 ,O! NOTIFICATION OF JURISDICTIONAL DETERMINATION Property Owner Crossman Communities of NC Attn: Mitch Huff Address Post Office Box 12033 Durham, NC 27709-2033 Telephone Number 919-998-8500 Authorized Agent Soil & Environmental Consultants, Inc. Attn: Todd Preuninger Address 11010 Raven Ridge Road Raleigh, NC 27614 Telephone Number 919-846-5900 Size and Location of Property (waterbody, Highway name/number, town, etc.): The property is approximately 92 acres in size, and is located north of the intersection of Hebron Road and Duke Lane, in Durham, North Carolina. Basis for Determination: The site contains wetlands and stream channels with indicators of ordinary high water marks, located adjacent to unnamed tributaries of the Eno River, above headwaters, in the Neuse River Basin. The stream channels located on site are intermittent and do not contain important aquatic function in any portion within the property boundaries. Please note that isolated waters and wetlands are present on the property that are not subject to Department of the Army permit requirements. Indicate Which of the Following Apply: -There are waters of the U.S., to include wetlands, on the above described property which we strongly suggest should be delineated and surveyed. The surveyed wetland lines must be verified by our staff before the Corps will make a final jurisdictional determination on your property. -Because of the size of your property and our present workload, our identification and delineation of your wetlands cannot be accomplished in a timely manner. You may wish to obtain a consultant to obtain a more timely delineation of the wetlands. Once the consultant has flagged a wetland line on the property, Corps staff will review it, and, if it is accurate, we strongly recommend that you have the line surveyed for final approval by the Corps. The Corps will not make a final jurisdictional determination on your property without an approved survey. X The waters of the U.S., to include wetlands, on your lot have been delineated, and the limits of the Corps jurisdiction have been explained to you. Unless there is a change in the law or our published regulations, this determination may be relied upon for a period not to exceed five years from the date of this notification. -There are no waters of the U.S., to include wetlands, present on the above described property which are subject to the permit requirements of Section 404 of the Clean Water Act (33 USC 1344). Unless there is a change in the law or our published regulations, this determination may be relied upon for a period not to exceed five years from the date of this notification. Placement of dredged or fill material in wetlands on this property without a Department of the Army Permit is in most cases a violation of Section 301 of the Clean Water Act (33 USC 1311). A permit is not required for work on the property restricted entirely to existing high ground. If you have any questions regarding the Corps of Engineers regulatory program, please contact Todd Tugwell at tele hon 919 876 - 8441 extension 26 Project Manager Signature-- Date November 16, 2001 Expiratio Date November 16, 2006 SURVEY PLAT OR FIELD SKETCH OF THE DESCRIBED PROPERTY AND THE WETLAND DELINEATION FORM MUST BE ATTACHED TO THE YELLOW (FILE) COPY OF THIS FORM. MAY-22-2002 11:34 P.02/02 BASS, NIXON & KENNEDY, INC., CONSULTING ENGINEERS 7416 CHAPEL HILL ROAD, RALEIGH, NC 27607 919/851-4422 ¦ FAX 919/851-8968 May 22, 2002 Soil & Environmental Consultants, PA Mr. Todd Preuninger 11010 Raven Ridge Raleigh, North Carolina 27614 Subject: Summer Meadows Subdivision Wetland/Neuse Buffer Impact Map Dear Todd, As we discussed earlier today, the proposed sanitary sewer outfall for the Summer Meadows Subdivision encroaches into.Zone 2 of the Neuse River Buffer because of the topography parallel to the buffer and along the ,alignment of the proposed sewer outfall. Shifting the sewer outfall away from the buffer is not feasible due to the significant slopes and the depth of the sewer main. You also had questions regarding wetland impact D on the east side of lots 164 and 165. The existing topography on the west side of the stream in this area is very steep. In order to construct the street and lots, fill slope will have to be placed over the existing wetland in this area to tie the proposed street grade into the natural topography on the west side of the Neuse Buffer Please call me if you have any questions or need additional information. Very truly yours, BASS, NIXON AND KENNEDY, INC. <?l .9? David L. Dunn, PE rn-rni 0 FAI) Preunin er J From: Danner, Teri [tdanner@ci.durham.nc.us] Sent: Thursday, May 16, 2002 4:29 PM To: preuninger@sandec.com Subject: Summer Meadows Subdivision Todd, Steve Medlin asked me to follow up with you on this. The connection through Felicia Street was shown on the zoning development plan and we have no choice but to require it. The extension of Felicia into this project is in keeping with the Durham elected boards' policies of requiring that new neighborhoods be connected to surrounding properties, and especially to adjoining stubouts, such as this one. However, we have put a condition on the site plan that the end of Felicia Street will be barricaded until construction of the connecting road is complete and no construction access will be permitted via Felicia Street. Hope this helps. Please let me know if you need more information or need it in a different format. Teri Danner, ASLA, AICP Senior Planner Durham City County Planning Department Durham, NC 27701 919-560-4137 tdanner@ci.durham.nc.us State of North Carolina Department of Environment and Natural Resources Raleigh Regional Office DIVISION OF WATER QUALITY Michael F. Easley, Governor William G. Ross, Secretary October 5, 2001 Jennifer Burdette Soil and Environmental Consultants, PA 11010 Raven Ridge Road Raleigh, NC 27614 NCDENR NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES Subject: Neuse River Basin Riparian Buffer Rules NBRRO 01-251 Summer Meadow (Hebron Road) S&EC Project # 01-6517 Durham County Dear Ms. Burdette: On September 6, 2001 I conducted a site visit of the features involved in the above referenced project. It was determined that channels present on the property and shown either on the Durham County Soil Survey and/or the USGS Northwest Durham, NC Quadrangle map are subject to protection under the Neuse River Basin: Nutrient Sensitive Waters Management Strategy; Protection and Maintenance of Existing Riparian Areas, NCAC T15A:02B .0233. The specific portions of the channels subject to the buffer rules include feature A (flag #187 -187A and 187B to the confluence with feature B) and feature B (flag #18 through #153 and flag #123 downstream and off of the subject property), which are shown on the attached maps. These channels are unnamed tributaries of the Eno River. The feature marked C is not subject to the rule. This office has assigned the reference number NBRRO 01-251 to this project: Thank you for your attention to this matter and if this office can be of any assistance or if you questions concerning this letter , please contact me at (919) 571-4700 ext 237. Sincerely, harles Brown Environmental Specialist cc: John Dorney - Wetlands Unit \neusebu£let/nbro 1251.1et 1628 Mail Service Center, Raleigh, NC 27699-1628 Telephone (919)571-4700 FAX (919)571-4718 An Equal Opportunity Affirmative Action Employer 50% recycled/10% post-consumer paper Y X {v1fC CP MfB s? . o' + r - ). W f 14 ?- R rI - ? %II ' ? ire 14 Project #: Scale- 01-65W 1" =1320' Project Date: Mgr.: JB 8/24101 Figure 2 - Soil Survey Summer Meadow Homes by Huff Durham, Durham County, NC Soil & Environmental Consultants, Inc. 11010 Raven Ridge Rd.- Raleigh, NC 27614 (919) 846-5900 • (919) 846-9467 Web Page: www.SandEC.com NgQRo 0 2Sl / II? f L f.? %L?? -DLL- 1V/ Wil •t. _ - L pis L ' ' ?? ? 4 ? vow L LPL _ O dat?ea i L z--_L ?=LL pV 815 40 J i m, ?- %5 i AJ - ? ?.:,... LJ' ? J I 1.. L>> L , i L Z!' II ,` ' ?` Z_ O ll 1 ` / 501 V ? f •? 11 1 J \ 1 i L ILL (I Project If: Scale: Project r~ =zoos Figure 1- USGS Quad Project Date: Mgr.: JB 8124/01 Summer Meadow Homes by Huff Durham, Durham County, NC NORTHWEST DURHAM, N. C. SW/4 DURHAM NORTH 15' OUADRANOLE 36078-A8-TF-024 1973 PHOTOREVISED 1987 DMA 5258 III SW-SERIES Y842 Soil & Environmental Consultants, Inc. 11010 Raven Ridge Rd.- Raleigh, NC 27614 (919) 846-5900 • (919) 846-9467 Web Page: www.SandEC.com AlARQo 01 751