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HomeMy WebLinkAbout19960313 Ver 1_Complete File_19960402State of North Carolina Department of Environment, AOL? Health and Natural Resources ` • • Division of Environmental Management James B. Hunt, Jr., Governor A;di Jonathan B. Howes, Secretary E) E H N FI A. Preston Howard, Jr., P.E., Director April 29, 1996 Jackson County DEM Project # 960313 APPROVAL of 401 Water Quality Certification and ADDITIONAL CONDMONS Mr. C.R. Styles, District Engineer NC Dept of Transportation Bryson City, NC 28713 Dear Mr. Styles: You have our approval to place fill material in 0.02 acres of wetlands or waters for the purpose of improving SR 1756A, as you described in your application dated 26 March 1996. After reviewing your application, we have decided that this fill is covered by General Water Quality Certification Number 2735. This certification allows you to use General Permit Number 031 when it is issued by the Corps of Engineers. This approval is only valid for the purpose and design that you described in your application. If you change your project, you must notify us and you maybe required to send us a new application. For this approval to be valid, you must follow the conditions listed in the attached certification. Type A soil and erosion control measures shall be utilized for this project. In addition, you should get any other federal, state or local permits before you go ahead with your project. 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, P.O. Box 27447, Raleigh, N.C. 27611-7447. This certification and its conditions are final and binding unless you ask for a hearing. This letter completes the review of the Division of Environmental Management under Section 401 of the Clean Water Act. If you have any questions, please telephone John Dorney at 919-733-1786. i ton Howard, Jr. P. . I: Attachment cc: Wilmington District Corps of Engineers Corps of Engineers Asheville Field Office Asheville DEM Regional Office Mr. John Dorney' Central Files 960313.1tr Environmental Sciences Branch, 4401 Reedy Creek Rd., Raleigh, NC 27607 Telephone 919-733-1786 FAX # 733-9959 An Equal Opportunity Affirmative Action Employer • 50% recycled/10% post consumer paper State of North Carolina Department of Environment, Health and Natural Resources Division of Environmental Management A?j James B. Hunt, Jr., Governor Jonathan B. Howes, Secretary E f---1 N F=1 A. Preston Howard, Jr., P.E., Director April 11, 1996 Jackson County DEM Project # 960313 APPROVAL of 401 Water Quality Certification and ADDITIONAL CONDITIONS Mr. C.R. Styles, District Engineer NC Dept. of Transportation Bryson, City, NC 28713 Dear Mr. Styles: You have our approval to place fill material in 0.02 acres of wetlands or waters for the purpose of improving SR 1756A, as you described in your application dated 26 March 1996. After reviewing your application, we have decided that this fill is covered by General Water Quality Certification Number 2735. This certification allows you to use General Permit Number 031 when it is issued by the Corps of Engineers. This approval is only valid for the purpose and design that you described in your application. If you change your project, you must notify us and you may be required to send us a new application. For this approval to be valid, you must follow the conditions listed in the attached certification. Type A soil and erosion control measures shall be utilized for this project. In addition, you should get any other federal, state or local permits before you go ahead with your project. 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, P.O. Box 27447, Raleigh, N.C. 27611-7447. This certification and its conditions are final and binding unless you ask for a hearing. This letter completes the review of the Division of Environmental Management under Section 401 of the Clean Water Act. If you have any questions, please telephone John Dorney at 919-733-1786. Attachment cc: Wilmington District Corps of Engineers Corps of Engineers Asheville Field Office Asheville DEM Regional Office Mr. John Dorney Central Files Sin rely, on Ho d, Jr. P.E. 960313.1tr Environmental Sciences Branch, 4401 Reedy Creek Rd., Raleigh, NC 27607 Telephone 919-733-1786 FAX # 733-9959 An Equal Opportunity Affirmative Action Employer • 50% recycled/10% post consumer paper s??o a 401 ISSUED 960313 STATE OF NORTH CAROLINA DEPARTMENT OF TRANSPORTATION JAMES B. HUNT JR. GOVERNOR Jackson County SR 1756A Mr. Bob Johnson 215 Army Corps of Engineer Reg. Field Office Room 75, Grove Park Ave. Asheville, NC 28801-2714 Dear Mr. Johnson. DIVISION OF HIGHWAYS Bryson City, NC 28713 March 26, 1996 GARLAND B. GAP= JR. SECRETARY The North Carolina Department of Transportation is proposing to grade, drain, base, and pave primarily along the existing roadway of SR 1756A, Charley's Creek in Jackson County. In order to construct this project in accordance with our current secondary road standards, and due to the proposed pipe extensions and the replacement of pipe culverts along Cold Creek (DEM Class WS-III HQW) along with two (2) of its tributaries, and five (5) tributaries of Wolf Creek (DEM Class WS-M & B TR HQW), we are requesting authorization under Section 404 of the Clean Water Act to extend and replace these culverts. This permit request is in addition to the permit requested for SR 1756 dated May 3, 1995. I am sending a straight line diagram with our proposed erosion control construction limits at various sites along the project. In addition, a typical section of the road, cross section drawings for the pipe culvert extensions and replacements, general notes and standards on erosion control measures, and a marked county map are attached. We propose to install and extend the new culverts along the existing streambed elevation where bedrock is not encountered to m;n;m- impact to wildlife habitat and allow the existing gradients to remain as unchanged as physically possible. The best management practices will be used to minimize and control sedimentation and erosion on this project. The construction foreman will review all erosion control measures daily to ensure sedimentation and erosion are being effectively controlled. If the planned devices are not functioning as intended, they will immediately be replaced with better devices. The rock silt screen will be in place prior to pipe construction and will remain in place until the project is stabilized. NO Mr. Bob Johnson Page 2 March 22, 1996 By copy of this letter I am asking Mr. David Yow, North Carolina Resources Commission, District Fisheries Biologist to comment directly to you concerning the 404 Nationwide permit request. Also by copy of this letter, I am requesting authorization to proceed under Section 401 of the Clean Water Act from Division of Environmental Management. In addition, I am asking Mr. Yow, Mr. Ed Ingle, (NC DOT), and Mr. Richard Phillips, (DEHNR), to comment directly to me concerning this permit request. We would like to begin construction as soon as possible. If further information is required, please advise. Your early review and consideration will be appreciated. Yours truly, C. R. Sty es, E. District Engineer CRS/wmt cc: Mr. Richard Phillips, P. E., Regional Engineer DEHNR Mr. F. D. Martin, P. E., Division Engineer Mr. E. L. Ingle, Area Roadside Environmental Engineer Mr. Eric Galamb, Water Quality Certification Unit, DEM Mr. David Yow, District Fisheries Biologist, NCWRC Ms. Erin Bronk, District Ranger, USFC, Franklin .._DEM ID:.._.. ACTION ID: Nationwide Permit Requested (Provide Nationwide Permit- #): _-.26 - JOINT--FORM FOR - ?.... ---------------------Nationwide permits that require-notification to the Corps of Engineers - _ _ _ _Nationwide permits that require.application,,for.Section_40l certification WILMINGTON DISTRICT ENGINEER' -WATER UALITYP-TANNING _ ._ CORPS OF ENGINEERS - - - - DIVISION OF ENVIRONMENTAL 'MANAGEMENT. ?: DEPARTMENT OF THE ARMY NC DEPARTMENT OF ENVIRONMENT, HEALTH, -_ P.O.-Box 1890 Wilmington, NC 28402-1890 -"P.O. Box 29535 ATTN: CESAW-CO-E Raleigh, NC 27626=0535 Telephone (919) 251-4511. ;A'I W- MR.-JOHN DORNEY -' - Telephone (919) 733 5083 - ONE (1) COPY OF THIS COMPLETED APPLICATION SHOULD BE SENT TO THE CORPS OF ENGINEERS. SEVEN (7) COPIES SHOULD BE'SENT TO THE N.C. DIVISION •OF ENVIRONMENTAL,'MANAGEMENT. PLEASE PR M. _: - - -. __.., _ ....._ . ?__ . 1. Owners Name: Nxth Carina Dapa-tiyt cif TtaiT=taticri 2. OwnersAddrm: P. O. Box 250, Bryson City,";'NC '28713 3. Owners Phone Number (Home): a _(Work): (704)488-2131 4. 'If Applicable:: Agent's name or responsible corporate official, address, phone number: C. R. Styles 5. Location of work (MUST ATTACH MAP). County: Jackson Nearest Town or City: Sv lva , NC Specific Location (Include road numbers, landmarks, etc.): Sr 1756A Charley' s Creek 6. Name of Closest Sftwn River. Wolf Creek and Cold Creek 7. River Basin: Little Tennessee River 8. Is this project located in a watershed classified as Trout, SA, HQW, ORW, WS L, or WS II? YES [I NO [ ] 9. Have any Section 404 permits been previously requested for use on this property? YES ki NO [ If yes, explain. rnn?+-?r-t-i_on on Sr 1756 last year required a permit. 10. Estimated total number of acres of waters of the U.S., including wetlands, located on "project site: I L Number of acres of waters of the U.S., including wetlands, impacted by the proposed project: Filled, 0.0 2Ae Drained: Flooded: Excavated: Total impacted: 0.02 Ac 12. Description of proposed work (Attach P S-8 1/2" X 11" drawings only): To widen and have SR 1756,-Z.'3 miles rom...Wolf ..Cree.k tBrid e._to Cat 's Ga SR 1'760 to meet current NC DO,T's. andards. 13. -Purpose of proposed work.-. c A m A t 14. State reasons why the applicant believes.. at this activity must be carried out in wetlands. -Also, note measures taken to minimize wetland ' 15. You are required to contact the U.S. Fish d Wildlife Service SFWS and/or National Marine;Fsheries Service (NMFS) regarding the presence or an:aff y listed orproposed for listing endangered or threatened species or critical habitat in the permit area that may. bby the proposed project. Have you done so? YES [ X] NO RESPONSES FROM THE USFWS D/O NNIFS SHOULD BE FORWARDED TO CORPS. 16 ',You am d to contact the State' Historic Preservation Officer SHPO , r „ properties in the permit area which may be affected by . the proposed ro' Officer omudon e so the presence of historic p J Y 9 [] NO [x] RESPONSE FROM THE SHPO SHOULD FORWARDED TO CORPS. 17.-Additional information iequiied'byDEM A. Wetland delineation map showing at. wetlands, -stream, and lakes on the propezty _ B If available, representative photo h of.wetlands to be im _ Pawed by C. If delineation was performed by; a Itant, include all data sheets relevant to the placement of the delineation line. -----D. If a stormwater managementplan is mired for this Prol?• py ?----?---Rural...Woodland _. .. _.T_? ._.._.v. ?__..T_. R'hat is land use of surrounding property F. If applicable, what is proposed meth d `of sewage disposal? Owner's Signature Date N. ;SSY KNOBS. 7 j ST?STACHB BALD - - HIM SAM {Aum PATCH BALD cow e? $ L PORK BALD - `. sE 4 MY. 6,067 r OlD BALD":fle'IONE BA IiK. RKfRAND BALSAM ' g .3.926 ELEV. 5.080 '" .6,410 SHERWOOD • k?ixi WILDLIFE v:t: ' ??ELEVGS BID 1lf?' • :?',%<. °10 • 38 7 ". 73 MANAGEMENT tt s:. . • 's,f. "4 .. <r1,, AREA BUCK MTK Creek ROUGH BUTT BAId` \14. 'i??,lj:l:• f Alnweb6 ELEV. 6.27 t0 ..4ilad? x a^.., F 6,010 ly% 1732':- i ?yl ?f:?•=, •r ?•.;?? E•: . `i' TANASff BALD ELEV. 5.622 `fit ^4.'µ • <i:>>:' 1745 FE o Bohm Bids Mo-*- r £ <(,' :.t PISGAH Cito >zaz IW06'' Co?ts?-SZUGTto1J Pork t R 215 MANAGEMENT ELEV to K ; ? t INCH ELEV. MM • B. 5,500 b >/y. M1 V nn F: Creek N A T I N A p N? ,756 n 175 -:Y 35.15 1755 4.2 CIO InA J ` rh 1756 2 4 U14 &kRldg MOR14EYHEAD y ro° ? ''a`im' PISGAH Z t a :^ .Z "AS 1737 J Y J. ''7:ks? - L J193 - 1D2 n " y DOUBLE TOP n e : =: MTK 71st 261 M1 Sob ? t sa 251 J ."'i SAID ROCK LIMA ly 1ZS4 to ?: 71 Cliff CEDAR COUP A, 1263 Cedar •LS ?: ?xi ? v'':?i? r > a MM ? V. 1? 17 ' 1751 C cf 1139 q .? ANASEE GAP L 9' Ndy , r96`CRF • t 76 s ::: ?fag :u Gam:. NATIONAL p %9 CEDAR CLIPF ''y4, Wolf MaMakl ?"° %a LAKE'. BEAR CREEK o % 176., F O R E S T ° Wolf MtQnt BELL CONEY MM P^? 281 ;; :OAS GAP TO RREVARD- ELEV. 4,400 ? 1.7 BIG KNOB tiro ELEV. 4,600.,, a .z;. 1.39 . ?TA RKEY N KNOB ;,?.:.:r:•:.. REST • y ' .. rn V.! 95 s0i b , COIDMTL':' .y N / rr70 ,Y Bill Clu I O• BUOCROOC MMI 5 V / .. O -? y 1 ELEV. 4,500 ??G11'r L1 ' I3l. ?• '? e LAUREL KNOB RIDGE 'GI " No 1m I,tt ?4?1F;y w° 0.1? OV• 4.300 LITTLE HOGBACK MM TOKAWA ? L 1]32 • 1114 1.6 n Lt3! ? / LAKE FAIRFIELD 1 7 aW. 7.140 1A 64 PN O "EV . nu tAt ^ ARp - i. R' 1120 '' JA III ?? ` •\\ \?\ `?l( U ?/ r 4400 I I /? ?? ? 4000 ??• , Knob a O /' r- M-n j \ l / I _ -erg BM LHT 1J49 J o 1 / BM. ?i' l (! • O / ^- 'I I ( ( r ??? ' i/ I r1"/ Ill i 1 ' -) l` ?_ ? ? \ 03 ,\\ `-? \?^\"'.y ' ?V ?! \, ? \ ???J?r? I ?•+? J^ / lam, I :j! ?a s? ? , ?I"? m1 e \ • ?? ',i 1 BIN h I, I NO i t ! ? v rI o°o ??? r (rO 1319 810,000 FEET ! 340 1 321 57'3Ow i 322 1323 (Lake Tox 445 J, and published by the Geological Survey 1 SCALE :)AA, USGS, and TVA * 1 7 M N 1000 0 1000 2000 GS by photogrammetric GN -- d checked by TVA, 1946 1 .5 on. 1927 North American datum 21h ased on North Carolina aaMlLS 1 20 MILS CONTOUR IN' nate system NATIONAL GEODETIC \ rsal Transverse Mercator Grid ticks, blue and recompilation of woodland UTM GRID AND 1978 MAGNETIC NORTH ^ ncri -TlnN AT rFNTFR OF SHEET rnn ... ..., • . ,. .. ?.., r,r . ?atc??sndv C? • RQAD_ NAME SR. 0. 3 J ADDITION l Kf PROVE ENT • . TO 8E PAVED'' P POLES TO BE MOVED T POLES TO 8E 'MOVE D'• C A L E. 1 '?- 50 t Std- OnAcriptiori ' Sym?, hnl 245.03 Temporary Silt. Ditch ' . 245.05 .. ... ..... ..41m..-7w i . Temporary Diversion ?. . 893.01 Temporary Silt Fence 890.05 Temporary Slope Drain With Earth Berm ?-- 245.01 Silt Basin Type A I - ' 245.02 Silt Basin Type B 892.04 Temporary Rock Silt Check Type-A 895.10 ,......... Temporary Rock Silt Check Type-B 892.01 . Temporary Rock Sediment Dam' Type-A 892.02 . Temporary Rock Sediment Dam Type-B ; 897.01 .• Rock Pipe Inlet Protection Typ. .. 897.02 894 01 . .. "".. Rock Pipe Inlet Protection Type-'B „•_••_••••• ' . Rock Silt Screen 245.04 Stilling Basin ••.••.•.•..::•••o.i...."r ............... F=n Rock Inlet Protection: Lai 896.01 Type A. . ..........? ...............».... 'A 0 -o .OR --A 896.02 Type. B : .......... ............ ........:. B OR ..B? - 896.03 Type C . ....................:...:::.....C .. OR •• C) gamesome 12 • { ' March, 1992 ?+y€'Ck?v .EVERY .5'rD•Fiy? E•t/E'•??l" ?N-t? ` G;L?,s?.•V6..U ?11?T l?/iS'??? if'?Gt• f//LL . I? wdT ' Td SC/1CE • s it. J • ?? s i??% - / 1E.+?Gry oi= .??isr ??,ee?_..v ?R,EA s ?l.,?' .T•s? ? i?- ?' / E,yGr•,? oF..visru.4?Ev A,??A Zoo ?? . JL9 EROS ..? aN ?s ?? - ONE 2-T • s'it. ?• .?;it.; iN -- 3 Ldrvfriv of v :sr•aee?•? /AREA 3eG <'6l , i. • `yti ?? , - ;; = si.?? - G ENG?:f? o%' s??srucBEn AMU ydo (S. 13.2 8) 71-10P S OA/E DITCH CHECK ??1? . S i L T CHECK DAM - 511.7, 3. S 1/V - E3 I-r/wp L GPE DRAIN 8A IRO SI' T DITCH 75D 4R 7-H E X 18.!I NKMEN 7- TL -?- ?. i ;FENCE f:+ -- 'MP ST P E A A4 Cp bO S1 N G 3E GL ASS ROVING' . F G R - r/P RAP s , ?S V. 5x O v S.S. ?r pp I .. O ?Br I L5 .0100 6100 0 EY. I ,a. -•-5 stoo i 0 0 Zo f00 ` .I 1 /S' MO I . I 5 01 . ? f i5tao 15/60 0 25100 23175 2-3 X5 1 al O 0 O 3I ?a I+-5 I 15? 1 4P e4l 0i O 0 O E? . ¢otav i kcr. I I , . f. ® ¢O f C?0 50.foo c t• 1'' a h?? '!1'1'1.°It _ _. 41 - - i6i 'f +i C t f k O 3 ct 4qlL -5 1 i E ??•' a f{ 1 : t , ?-' r# i L 5 A? r ? k 41. f , y ' l ' 1 a 1 ? ' ; k "s rE t r ..I ¢5 fo o , , • f a I 5 55 // X17" (He-Ir -. fob Gox Zg8 Tue.k K)Segee N.C. d - 5 0'-*.. SSfo? 6 5 firo t ?I i. . I I ?p foo wino O f?? r Ce ?? h P71- l" 6 9 L'L-u 293 Nd, n ?D ?I CX? ?9tso f CAr L i'?J ???? 1 P-T, ?6 fox T??k?se y?? ry.?, a I ?q l /qCe Owen. ? Rr. ?? r?x 293-G Tvekyj se?ee NL°. 0 L51 0i 65t6b _ 48 p . 6S-?oo 66.f00 } 1 L. o aa" rJ. -7O too i l?- 3 c? p 7IfCO .I -70+00 O O ti i? 0 3 I L5 i 1 i . i 75? 0 4 9tJfCb 9ot?o raj Woool - ed $1?• f55 io 89'170. CL73. t f 1/0 ?/T'9171195ccJ ark. ?d. T 9?too : i 0 9,6 icn I 0.G k Fr raoly )ZT 2 9,6 f i0 ,Qr // Sy hder o'-?. Rr ?g sow Z9¢ ?o . Tic k ?se3a ?, /V.G . 8515 . 0 B.S?? 3f . 95dCO I? 5 • I E? 24 I L5 Ten 195-0 i i /z 3 owden Shed fo be? STS. 92+2¢ 92133 i I 90foo G /UD fOP /00 i00 t ti;;;F r i O kcr- i IV O LW!oJ- /o5foo ? io5?od - 0 i' O i lot i 5 //5 t oo I v ka: rol? 1 115 too 0 i 12 HW 5 /Zos?o i oc I ' iZitoo EUP izofoo yy -*'TP^'_.--•,-: :.ham=u.'_+,.'S?`.1:`,•%•...'. Ct+y*a. "fNy;"^""t-? ?? •t'??tT,.f ?'?•'•p .r i tK..}. rE?i tl'Sf_ -R y q_ ?taR? ""%a=?? t" ?.y{ ?an '??'.' t .i4RlJ. .+C'r . vsY vl }. yS ?''?'R;;"lrryY?i?t:' J?L ? -! l+??i 5`?awiR?S.??.?..w?N.?7g.?,?)• 3.c.*yi r_a T ?.++• r ?a, e` ra r,=,t +? .... ! wt i~? 7.,? rS sr'??,y?c r • }• 'y ?.r .• ? ? . r't ar .° ? sM•?r??"'S ?"5. .?,. ? .? s•WY+' ??. 3?m s1i. I j •t t* ??v ••.. 1s?W;?3?,:... ?'?r 7?,-.. S ... ._.. •'''•'£t?,?'yae???????s. ?"?- ?+r',?? ! ? .. . Y f•n2'Y'rY'r"•: I _ y2?ir?. 1J 1- ?C'Si? .s• 1 ? •• Y .. tt- E .j.; 1Cs•'..-err r , J ? ? Z d N S - ? Q JT:1 e > ° E--4 E it: n ?h z =_ Z7 i? cn LIJQO= a C/D CL O f o O J z J ? Q Q1' cr1 1 01M Z ?i zzi o{• ?4x ? CI tah in Ocri n ? 70 14 March,1992 TEMPORARY SILT FENCE:J ?.' Ali A temporary silt fence is commonly used at the toe of a fill section to prevent off- site. sedimentation. It is made of permeable filter fabric buried at the bottom, stretched and supported by steel posts. The silt fence reduces the water flow while retaining the sediment. They may also be used to divert water flow to protected outlets. Silt fences need to be checked after each significant rainfall to ensure there effectiveness. They must be maintained on a regular basis. Silt fences shall not be installed across streams, ditches, or waterways. AREAS OF USE: At toe of fill sections where sediment runoff can be stored and contained inside the project limits. DESIGN CRITERIA: Material With Wire Without Wire Fabric Type 3 'Glass A Type 3 Class B Steel posts length 5 ft 5 ft. Post spacing 10 ft. 6 ft. maximum 17 March, 1992 r r co m? ca C7 ? d Z D W p .a d -? -3 o? c a ^? 5 n L- i ( z;m ?I? ° dm `? W m W I w? U t -=------ -. W z _ of W _ aU -----------' zo (1.. z F - G,. fa m E -09 ? a ? W I I I-- w F 'f: . r O ? d I I i { ?L f'm: a ilI- { cr-Z ? U _ _ U III " O d pp= rn d m W ._o= Cs7 x z ?-- o r :2 a W t-W? zd r'- Q (n I! aC?2 m=E-W z?- CO zWW z C,] a ->.Umx d° w3 z F 3 Q ~ z? dam 6Fca - cu &j d `?' i , !? C dz m- ? pa dW x WvsCl) U==)xz >. ? m Z v?i ?E- ad xa°E» 63 ¢i ? ?C7 pd a d3dmp°W AL. ... ZW u 014 mi E"C7 rn?z CL .4(-- 1-2 Q) Z- y? G mO mC72Q ZE- cow ra caxW 2 u OIaIQ p QW m F 3to0f-r C7- (n fn .T CLII D ux ? E Z d-3 We O zwn. C.- Z OfA OwG ?d % NI jl H >11 a d w? o` o s mt I izl 18 March,1992 TEMPORARY ROCK SILT CHECK TYPE-B: A temporary rock silt check type-B (also called check dam) is*a small dam with a weir used to reduce gullying in drainage ditches that are to be filled or permanently stabilized at a later date. These type-B rock silt checks help reduce the flow velocity and are generally made of class-B stone. They are used in ditches during construction where the grade meets and/or exceeds 3%. AREAS OF USE: • In channels, roadside ditch outlets, temporary silt ditches, and temporary diversions. • In conjunction with type-B silt basins. _ DESIGN CRITERIA: • Center of rock silt check shall be at least 1 foot lower than the outer edges (top of channel sides) • The spacing (ft.) _ (3 /. % of ditch grade) X 100 ft. 27 March, 1992 cou? C13 L.) v•? Z J tr Q 1 NOSOZZ ftN000 O 1 W > w F- t- •- 0- z I co CD ° 1 o z=tro 'D O ui JUQHWcr-- ?" i J O.W 1 O I =O- Xwcr•- W -M UOm w ' ' 1 > W ?. ?-a w- g Otr Wo W Z( OWCLWM m it -- -+ S U w o a 0 J J N ° U = C ? U a Q cr- W w LL O O O d ? OWN ZN wi-- ¢ni-•o¢ F-NOJ•°+?f-J O OU¢ZWU Z LL--a=)- 3 W Z Q J tL u ' z W? • - p NW LLI O > cr- U 28 i a 0 : N w¢ (L m ~ J _ Q N Z O r ? ?U ° Z'- O O U Q NO - ?1 N O ' W tr CL U .? S I? g u 3 U W V - J i U ss. 001 O Q 0 CD ?- F ? s W F- 0 rr, Q 0 Z, I I ¢' Q I ?oiW? (fj G r n March,1992 ROCK PIPE - INLET PROTECTION TYPE-B: A rock pipe inlet protection type-B is a small horseshoe shaped structure. The type-B rock pipe inlet protection. shall be used at pipe inlets which are 24 inches and less in diameter where there is insufficient space for a type-A rock pipe inlet protection with storage area. The type-B rock pipe inlet protection utilizes class A stone lined with #5 or #57 stone to protect drainage pipe structures by impounding the sediment laden water before it enters the pipe to trap sediment. This device can also be used around the inlet of temporary slope drains where space is limited. at the outlet end of slope drain such that a basin or other device can not be used. AREAS OF USE: • At inlets to pipes no larger than 24 inches in diameter where it receives flow from several directions. • In low flow areas where right of way is limited. DESIGN CRITERIA: • Structural stone - class A • Erosion control stone - # 5 or # 57 stone. • Dam height - 1.5 ft. minimum. 35 March, 1992 _ ..... ... _ _ .' r . 1 r. .• v ` L"ibr-rtv a _ . iJ r i s ' Y2 ..r ... ?? b r - r : n.?? .•^.` .lw <.. .. t. - • ( p? T 4.? ?Riil _l A 1 / 1?: rte. .• .. . • r j. r ? . ?y+^:iY.iw. ?.v. ) ? C 'rR. t ?k .i?„ T ? ?J l l R 1 j1?..111fj. n < .3 W W E` L m = E'?o •F'"a?w ? ? f ? v'zw E-- CL rn via F? z Wa wo^JZmain o W Fzc°.c?w?E?.oJ i zp: wzwc. m cn CL Jw-E.ro>.in ri0Za?W a (n e°. d v3 W a ?' .3 z d°aazUZZC?zaio?Wi E.rgW o WWZe»W ymin- __ ?aim F- aio?mdFaorzEd••?z ~ Fy azzzrndoc?--zcU..W J. O o W=000 =t- U E-- F Z Z Cl p] (JF U w w cu C. U 40 Id u . CL ¢ ?- 1 °' LLl Q e; 3?• ?1 x C) 2l CL CL Z V- pZ J 1 0.= cr- O ?' N cn i W `=l 1 "J UJ ?J 1 1 } 1 ¢ E . 1 1 1 z 1 1 J ?.. Q ' W o0= Z OZ CL cr- CL r r Q Z J ? I?I co O cr- ZI I 1- O W '] F ¢I U Z r GQ? C z a; ol?Iz ~ t-- Z U') i.l-? ' 0 0 wIo'Wi a IZ? ® W T ? u7 ' J w;? -. 1 ri l? 36 March,1992 3 yt ti .i , sT t t,`s ? ?..z3f; t*r.?Lt : n '. ,5..a ? ?.2 '.. Nt\y nn y '[ t „S.? c t" • . '? •. ff ^l?Ptr f? Jr i 'T +/ ? .t1 4w Y i t A, '44"zsy4 c'T 'T ,"t .? 1 1 R `4 ty ?+. ?' t d ?YS `R4 ? ?... . ^. :al r Rocx SILT SCREEN:.4. A rock silt screen is aloes-level dam structure to be used in streams below culvert sites. Rock silt screens shall be used to trap sediment transported by running water and shall be placed in the stream below the construction site within the right-of- way or easement boundary. The rock silt screen utilizes class B stone lined with #5 or #57 stone to produce a ripple-effect in the stream to settle the larger sediment particles transported in the stream from the construction site. The trapped sediment shall be cleaned out before the device is removed-from the stream. AREAS OF USE: • In live streams below construction sites where construction occurs in or adjacent to the stream. • In live streams below a culvert construction site. • Where it can be cleaned before it is removed from stream. DESIGN CRITERIA: • Structural stone - class B stone • Sediment control stone - # 5 or # 57 stone • Dam height - 1.5 ft. minimum and 3 ft. maximum ( shall not be higher than 1 ft. above normal flow of stream) 37 March, 1§91 yZ( Q LLm O w w N ? CL O. Q m I ... - ------ 0 ? w GI F' Z '`' y' Z G Z E,,, ' ? a Q QE- U3Z O? dOZ CZ o. o E- a W E- Z E- ra°adwo .?zwvc OW zy_ =2W. 0 maw wa Fomroaw Ea„fn Zed MW Z lCZ_ Ewa -3=m-- r.. O.ZUZyw00 aOa0Cz VaCn 0 O.OZ ?G.-?G.Ow?E Z WHF Z z 0Z*: N U3 E=.W V wE- 0 WZE-w ?w> zoom Ccn ?mdf-°»o?01m wafn1-..3 E V10..]wawE.d._7dE- E-? ZdZZdydoWVi= -4C'0. O WOZOOU =6-Oa0 '.fir' w z me WUC-v WWfs- CLU 0 - W C D Z O « U. X E ? W O ? N O ? y a F-? V S / W N ?T x T N ll NL O u I of 0 f zl ¢ v Olv ?¢. ? c I N ? l „ I d Cr C _ O«- f:(r z W W PY U^ Z? 1?0 .0 v Z O Zq:= off= rr <1 0 1 z Q ,7 ?o E h r 38 March, 1992 wif S P /75-(014 -OP t S2173, 4 ,7y t 6? Ir k ff S? 75-6 OLD--N?i^!-----------T--------- --- -,-?-?--:-?-,-.<--..-:-?:..i-_ ? iI I / r t i _ -? = r'1 i w j-? fl t 756 Q 1 S / 75-? )'-I 116