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HomeMy WebLinkAbout19960381 Ver 1_Complete File_19960423State of North Carolina 10F"W."4 Department of Environment, Health and Natural Resources T4 0 Division of Environmental Management James B. Hunt, Jr., Governor Jonathan B. Howes, Secretary p E H N F4 A. Preston Howard, Jr., P.E., Director May 3, 1996 Jackson County DEM Project # 960381 APPROVAL of 401 Water Quality- Certification Mr. C. R. Styles District Engineer N.C. DOT Bryson City, NC 28713 Dear Mr. Styles: You have our approval to place till material in 0.01 acres of wetlands or waters for :he purpose of improving SR 1135, as you described in your application dated 17 April 1996. After rev awing your application, we have decided that this fill is covered by General Water Quality Certification Number 3026. This certification allows you to use Nationwide Permit Number 3 when it is issue." 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. In addition, you should get any other federal, state or local permits before you go ahead wit your project. If you do not accept any of the conditions of this certification, you may ask for an -;ijudicatory 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 cenilication and its conditions are final and binding unless you ask for a hearing. This letter completes the review of the Division of Environmental Management unir Section 401 of the Clean Water Act. If you have any questions, please telephone John Domey at 919-733- 1786. Sincerely, ton How Jr. P. E. G' Attachment cc: Wilmington District Corps of Engineers Corps of Engineers Asheville Field Office Asheville DEM Regional Office Mr. John Dorney Central Files 960381.1tr Environmental Sciences Branch, 4401 Reedy Creek Rd., Raleigh, NC 27607 Telephone 919-7-.3-1786 FAX # 733-9959 An Equal Opportunity Affirmative Action Employer • 50% recycled/10% post consumer paper STATE OF NORTH CAROLINA DEPARTMENT OF TRANSPORTATION JAMES B. HUNT JR. GOVERNOR Jackson County SR 1135 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 April 17, 1996 411 ISSUED GARLAND B. GARRETT JR. SECRETARY The North Carolina Department of Transportation is proposing to grade, drain, base, and pave primarily along the existing roadway of SR 1135, Shook Cove Road in Jackson County. In order to construct this project in accordance with our current secondary road standards, and due to the proposed pipe replacement along six (6) unnamed tributaries of Tuckasegee River (DEM Class WS-III B TR) and a proposed pipe replacement in Canoe Creek (DEM Class WS III), we are requesting authorization under Section 404 of the Clean Water Act. I am sending a straight line diagram with our proposed erosion control construction limits at various sites along the project. In addition, a drawing for each pipe culvert replacement, general notes and standards on erosion control measures, and a marked county map are enclosed. We propose to install and extend the new culverts along the existing streambed elevation where bedrock is not encountered to minimize 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. evk Mr. Bob Johnson Page 2 April 16, 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 tinggineer C. R. S E. District 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 DEM ID: .-..ACTION ID• Nationwide Permit Requested (Provide Nationwide Permit 0 3 JOINT FORM FOR - Nationwide permits that require notification to the Corps of Engineers - -- - - - y Nationwide permits that require application for Section 401 certification' WII.IvI NGTON DISTRICT ENGINEER WATER QUALITY PLANNING ___ __. _-.- • _ CORPS OF ENGINEERS DIVISION OF ENVIRONN ENTAL MANAGEMENT DEPARTMENT OF THE ARMY NC DEPARTMENT OF ENVIRONMENT, HEALTH, P.O. Box 1890 AND NATURAL RESOURCES Wilmington: NC ._28402-1890 " P.O. Box 29535 ATM: CESAW-CO-E . Raleigh; NC 27626-0535 Telephone (919) 251-4511 ATTN: 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 PR24T : _ . 1. Owners Name:- North' Carolina_Debart Tit--o-f--Tr-ansnnrt-at;nn 2. Owners Address. P. O. Box 250, Bryson City,-NC 28713 4 8 8 - 2131 3. Owners Phone Number (Home): (Wodc): (704) 4. If Applicable: Agent's name or responsible corporaterofficial, address; phone number: C. R_.Styles -- 5. Location of work (MUST ATTACH MAP). County: Jackson Nearest Town or City: Cullowhee, NC •Sr--_cific Location•(Include road numbers, landmarks, etc.): Sr 1135, Shook Cove Road 6. NameofClosestS=amMv=_- Tuckaseegee River / Carioe Creek 7. River Basin: Little Tennessee River 8. Is this project located in a watershed classified as Trout, SA, HQW, ORW, WS I, or WS II? YES JX ] NO [ ] 9. Have any Section 404 permits been previously requested for use on this property? YES [ ] NO fJJ If yes, explain. 10. Estimated total number of acres of waters of the U.S., including wetlands, located on project site: 11. Number of acres of waters of the U.S, including wetlands, impacted by the proposed projex: Filled: 0.01 Drained: Flooded Excavated: Total Impacted: 0 .01 22 Description of proposed work (Attach FLANS-81R" X 11" dmwin oid ---Te- e•?- ^?- -pave--SR l-1 ---t-e--•maiat-..:curre.nt. VC =-D©t ?tandardss. -Y,? irrr ? 2f ^ ,.... 1 •... 13 ' .Purpose of proposed work. ° 'E me 3, 14. State reasons why the applicant evesA tt?,? vn.1 smust be carried out is wetlands. A ee acYhme taken to minimize wetland impacts:' note measures 15. You are required to contact the U.S. Frsliand Wildlife Service (USFWS) and/or National e.Frsheries Service (NMFS) regarding the presence or any Federally listed orproposed for listing endangered or ed species or critical habitat in the permit area that may be affected- by the proposed proj=L Have you done so? YFx 11 • with Uplica91oi? RESPONSES FROM THE USFWS AND/OR NMFS SHOULD BE. FORWARDED TO CORPS... 16._ You are required to. contact the State Historic Preservation Officer, (SHPO) regarding the presence of historic properties in the permit area which maybe affected by the proposed project? Have you done so? YES[ ] NO[x] RESPONSE-FROM THE SHPO SHOULD BE FORWARDED TO CORPS: ":w i h alp l i c a t ion . 17. Additional information required by DEM: A. Wetland delineation map showing all wetlands, streamm and lakes on the property. B: If available, .. -- --.. representative photograph.of wedaads to be impacted by project, C. If delineation was performed by a consultant, include all data -them relevant to the placement of the delineation 14= _y D. If a stormwater management plan . , is required for this -project, attach copy. _ E. What island use of surrounding property? Rural - Woodland __._ __ F . If applicable, what is proposed method of sewage disposal? Owner's 5 VICINITY MAP Work Order: 6.962050T State Road Number: SR 1135 (Sta. 00+00 to 70+80) Jackson County Cwk lisp to 1721. a a` B.ac°/ - nu Babas. '? ?- Rkh Moumail s ? - SZ.3. Cks a r' `? i74 q .. lz!a u2z - ?Ty 1ZTQ .o ?% Pk RIC 1Z2L 3os j C16 Cr«k BE n T t IT. 6 1T. ktr. N A T '•• Caibw?h.. s `• . A y ' 1> lZt4? ?a'btr ?. 137E ? L? • b ? it 1 ?t? L?Tib ? ? a i.7 ?? ?^. \ )' a o sa Eod t°perf 17A3. ?s NORI EYHFAO ..<. ??? ti t •• 17i? ? ?_„ 7? e. LLU .+ to t ttt DgINETOP JII2 li MTK 0 1E SeIsG Sill tc ..4 A nn EM to fA5'7 >2? Tadca?-g.. s 2B C.der CRH CEDAR GUFF FAMf6 KNOB Spoedwa L .:IIT Ck/ MM 4„010 1211 ?? p? 11221 I 1? 9. S F '? >r ac`Gi.J -1 a 1111 1135 Ss t wp4gt ,4C w CLn" LAKE C? G BEV. 3.427 ??.. CEDAR CLIFF LUL Ot00 ,. LAKE ' 0+ BEAR CREEK ,Sil off, stn .. ;yam F O R E S T ?J WOC KNOB ? alenlr twos F -70-f-96 ?? M S BEY. 4,292 -° D LoN G & BIG ?KN ,.. MOSS KNOB 3RR1 .?--? y Q 4 ?n ?P J.t2E. 1 ?, !>? w L+ MOT M EAGIE 1? LiZ ?' b ? _r KNOB 113E ..w ? 1114 1 1•8 IM 1130 Big Ride. v ` Doabi. Sprilg T UCKASEGEE .Q H Ck 1127 Ck z w FALLS .Q 3.1 ° 17 wo1F J1it 11? 1 +tz. ' KNOB ?-. ti 6 t y 1110 ./ 17•' 7 ?e n IM e lsu s n t? .1.?_ °? • . r ?tii" L^J 3 ' o o ? J of U » F, e e to seoooo • • . FEET ?p X05 - =Tu ,*oo e T 1 40 50 • ` ° • y ? r 3904 0 f F -? • ,' r , Z 't 0: J . ' ?. ?Cp o, 3903 ?'• ? ? ?<<.?? L?,, ? .Inhian Plate :b - ?: mac' a?" ;., - soo, ?•.. i /`I(, \ v, ...? zou ????. 1111 1 : Vt QW a1 2 ? ?L \ l I lit At ,'? eft L TI 1 ,? 11 '.2Y18 r= ,/ )Jy„ ?, 1, ,! Tj \ \? `-• 2600?,?\ ` \`.•."\\\?.\ •?? ?/r i' I t J ?, f.'?^? Y?, J I •I / ,; i ' ` 'AG 00 i000m.N- . - ?;??.:..?_...ai=•,;°? ?i?l l ?1 1 .?t.?\':?..?.? •\? l\? ?•?.?\ ; L/a% `_ ,? , t ?? •?d \ n •`f._ \ ,tom ltJ ? ??1 \"• \.?:?,\:.:``?`??\\= ?•.\\- ??? ?- ;i• j ? ;:?\ ,J ? d ? ? _-?_?? r ? 1\t•??1 - _ :;• Meek ?\\\\? ?? V \-'•tS?\ ?\`; .?. ?` \\???/? ii? `\??1: 3 00 -0- 1 14 3900 ', -' =j: \%• ?.: -?.?"? `_., ?,i?\ li? L ?o?° 5 s.= 1? =L IL-It' 1 ip _ -. aril, -• ???.????-.? ?:? ':,; ? ..; , -•.?? Jam., ? --?--"?`\?'=- ._ r \? •..??? ,;f ,,,, j! ;?,/./?„?',./=- , _-?_. - ., - ---._ _?, ._, •.?-_.. =---_ =:.\___ ? _?• _ ? ?" . ? . ?%--?a?ti ..., .%i ills ? :- ) j`. ??_ . i ROAD NAME - SHG?,? C'ovc. S R. '?CAIO ?p/?tS'T.t2c.lC 7-14 u AT 70 t'$ O AOOITiON I NI PROVEM ENT = :1-0 BE PAVED ' P POLES TO BE MOVED = 3 ,ry ¢?./? T. POLES TO 8E -MOVED • • •= -" ? V-W W! DTH $CALE vcsCd ?ec?cow. •?-f•?o -/g7fsv 4/S/ Flo few 112= d '7 Z. a- IS t sto 3/tzs ST . s4??? ' 1 EROSION.-C-- ONTROL - DET.AILS AND SPECIFICATIONS 245.03 Temporary .Silt Ditch 245.05 .N...... 0....... NN......... . ??•???? -Temporary Diversion 893.01 Temporary Slit Fence • 890.05 Temporary Slope Drain with Earth Berm .-. ?. 245.01 24 Silt Basin Type A • ................. 5.02 Silt Basin Type B 892.04 Temporary Rock Slit Check Type-A 895.10 """"" • Temporary Rock Silt Check Type-8 . 892.01 Temporary Rock Se=iimeni Dam Type-A 892.02 . ............ Temporary Rock - Sediment Dam Type-B . 897.01 .. Rock Pipe . inlet Protection Type4 . ' 897.02 894 01 .......... Rock Pipe Inlet. Protection Type-8 - ............ - . Rock Silt Screen 245.04 .................:....... .................... Stilling Basin ................... ................... Rock Inlet Protection: 896.01 Type A ...... ....... .............N... A.. pR ! . ...,[? 896.02 . Type.g - ' ........... ....:.............. .. 8 13' • 896.03 . T e C ' YP ..............:................ OR C 12 •?, March, 1992 ?•'• R.ailro3d ..:'.•.• ......:........:........ ..,» • . c ?"Control of Acc*ss Lined:'..'..'.........:. a . ..................... • Slope Stake Line . :o 4 Is. A + w005 • • • .•• • • • • ••.•. . . • .•• . • • • • • . • •.,. O?l•?•;?/ /•t?? Q? !'•??.R.? •-O- ? ?Telzp.iiunt or,Te le-ru?ili Pole ....•...:. ?I:?ia'? '-;o•- , 11)1101; Tower Pole and Line...:.:..:.......... -?? ?- Power Pole .:'::.' :.......:.....:.....• ?i:%I-i-rm S t witnt' t • F ?,?• ` Easenleti!. LII2e...•::...• :.......:.....' -_ 1•fowina I_inttC'.'..:•.......:...•........: Guard 11aiI ........................... S4nitar}= Setiver•Line.::............. ; --*--=? . Water Lint r- Gas Line ' t'ltUt'UST:ll f:XISrING Chain Lhil: Fence- ..................: - t-?- -t7--fl- Woven Wire Fence* ...... ...........:. - ReaCneraciotl..•..'..:.....?.•..,.....•... ??'?..?•'. • ??? Reforestation •............ • • .......... • n ' Terilpo racy Silt Ditch :............:.. --- TSB -=ff- 'I3a - •.•tlt: 1 • •. • •• ' Temporary S I•eiic:e ................. -411 • Temporary.Slope•-Drain . Brush Barrier :'.:::+...'. • ................? Silt Check Dam I'A)e A•.•::..........:. Silt Check Dam'I),pe.B . . ' . . . . . . . . . . O g g .Silt Basin q?-pe A'...:.:'..?.?.:•.....:.:..' • • .-+ ' SiIc Basiri Type B . •. •........:•.......... Rock Silc Check Dam .................. Earth Dorm ....?:.....::.•. • Temp.' Stone Ditch Check . , ..... •.. , % -- . ,-.• .. _...---.... ___ -??E S' /GN Fd2-` f•S'/t j'" ..I3.?s/?? ` ? 7L ?-:`!-? u ' : • boa ??rdic FE?t' /'.?/L ??c.',?.? _ ?? ::.:. =.' . t4 yeCvC-&D EVE.CX .S"P-ly) E?E J"j /?N-Z7 ' GfLE,sJiV6.U t?lJT lr/h'EiV f?/LL 7 ,Vd r 7 S G/! E X,11.7' .6A1? iv - / 1?.??GTy d? s?isrrre8? u /?R.EA 400 (?5. t3.7) 3• /sc 1\• V S /i. ; ' .T.y t ; i?- ?.' /_ E.YGT?S/ aF y?sT/?RI3ED /?.?E/? g-ftOF1 t blc% SROSION •. ?? ONLY • 1- X11-7 B, 2 Z.iW67/1 o.e vis7•!/•eBED /AREA 3d-d' Ybo' L E?vG?:? d r .niST?/.fBED RR?R- O a ,Qox /OV7 L G.S?i?•pOL OT7???/?'C ?+- so -r 5 0, ?L • ?f .STR. Zfi6o to Ztra -•- _• Radue6 R/(,cJ to ?9 ?_rar+•Ney • Fog Cclcxdere ?jctr.. .44 • j ? o ?a • I E Lm .44 ? 'i 51-00 D ISM too ' O 4 1 I ? i 4 1 i ? ?Stav j 16 too Yoe O ? O LM . /ar f .. O ? ` O .f ?? ??? ?. ?-?: i ?,• 4 ' 1 i Z?.?1. 1 z5?o . ` -?-.. -?;.:• •-- -- - ... _??•? - ??--rte--:-,??s+??=;,is.' ?•S%?t.?'?+??-?_."r?i .. _ 'S 331-oe,: r' 3 ?P 4 • i8, ?P . 30 iCO ? ? 30? . • - .... - .? . .. .. .. C' -. ?ti._ • I. _.: •.. 2:11. .?. .. Y3?{?.:?: O \? /6a <Sh?do,? COUP .Q.p 2r cw R7 L ,L>x 9 37 /S ,137 4- f i 1 s-wo s?*oo 3 1 T mss ?ie4- PIL s 4 • l ? ¢atoo 0 O ff 4 -4 5, 6 f NC?s?i p t prs P02 3/4u WA-= LTMC O 4 t ? Soto* ? ? 5afoa ,?"9 tov t S9to ? 4 f i l -155-fCo I I Jfjrn2S CXas fl f- 6S fox/O ? ? ? • ,?L v?9.-f-s'o Syt sa ?L 1 j • goo ? '. 1 • f? ?°o - - - .. ? ? '.'°?? .?. .. ./?. ... :+'n' :;4•»:_?'_• `_. -t_t..?. r .ASK` ?^.•?;. aw • ?.f ? 8 ?3dx /O • - - -fig 7g 3 4 ' I ?- ??r? 1 1 ?rtoa ?? _ t? _ ... .? 11 _.: _ `: < Mawr _ ?:r°s:x^?. r ?•- ` - _... lo? JAL ? .LCNd Cons?•?va?-?o•-- ?Q?''$O /?O 7`BO E.vd CcnS"t'?cite?v ?ZJ? 0 4 2P? NP ? ' G 6fYX . .moo ?L _ r ..•?+.? ?? •.'?IS".?"?•'..-F.'.•r--fir. ¢r•.••s>.. ..•..rr .y •.?.>?•: w••r•7. '?; •- of .?ir!^?7'.?:r.?•,.iCC: ?cNTuS'r..'r.,l%v.-?*.'b"?Ei?'iic+.?Yx'?:..`=°+•r?.:ciiT.ri.L.eS+. _ `?; 9?02l39 - = DATA _ M 61-03447 POLE PROJECT S?_?ct?L??1L'? COUN'T'Y ------------------- Sheet--__ of___. OWNER. OF POLE LINE naC:L±4h al=et ___F_' ' 'POLL DIST. FROM CUTTER PRcscNT ROAO DIST. FROM CLNTSR PROJcCS DIET. CzNTCR PROJECT AFTER MovtmG REMARKS STATION NyYLtR LT. RT. LT. RT. LT. RT. , 439 r. 3o' n , 111- v-' Q21C .36'97 ev? 534- IZ ' ' ?g' ??• ?? 01 a ?' ? r n w- ? I lOs 9 ?. w.7 ZR 29 ?o /I rn 16 c?1;re . 4aLc -36 U 7 I • p 1 / ` / /' Z 5' 11 me.,- /e 2S L7 7?t PPG.-r Z8' 24' 3d rna?>:. Gwd? W.r? 30' T. nc?. 1,10+13 f''? cv ll' 2?? m (J;r? Z 1?7'- d E D p,P.r ? ' 13' 25' moue Gw?o w•?ti ' ,Pl. , a4 -?.-• f=em. _. ; PROJECT COUNTY ?-y-- ---------°----------------?___-Sheef ,:.? -...?_ _. c? OWNER OF POLE LINE _?'o•JTI---??r-°='-?=? -??- =------------- --- ='`=.'` .... Pout DIET. FROM CSNT[R PRCSCMT ROAD DINT. FROM CtMISR PROJ[CT DIET. CXNTZR MIOJtCT AFT[R MOVING - STATION Nuraoe LT. Rs. Lr. FIT. LT. RT. RW ARVS SOt T'P 14' 11' 2d' ?. ?i?>L4 T P 21 ' 20' ?Z¢f T, P. 21 Z 191 i 30' Moog 04g- :10, T TEMPoRARY SILT FENCE: 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 Fabric Steel posts length Post spacing With Wire Type 3 Class A 5 ft 10 fL Without Wire Type 3 Class B 5 ft• 6 ft. maximum 17 March, 1992 I z m f L` . III= c? z 111 v - i l 1- ?.w z LLJ. ?? a? ----------' zo LL z J mod r?z 4 ca ra 3 ?E.. 0:0 - m C zr. Ems- III- O -f -.{Z cV rr? Z ? i 6 m _ U .FJ 5 -, " ?- ° III o ?--- 1 fsl _ Z ? Q'J. CM ca C[? ?avEi a-'f Q ? z?- u?E"zr?w z a? ? - .s f' ?zwzaF' F-- <z aa? r"da?QOa ! co f•a?u?c?? tAW 3Zy' mpQ EIm 06 aa3 ?36m?aca oiwt v - ra a. z w x. F rzz xzca de-•vl? oa e-_Ow ww-3 0 zi mba cam- ?iot,?c?c?z? _o zm araC <.a z orn ot?.c xe c? >! E a. a w, Iz¢! 1 $ M=h,1992 TEMPORARY ROCK SELT CHECK TYPE-B: APP, 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 CRnmuA: • 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, 1942 2 v ~ W 0 0 J -? D = N W O CL 0 w W I- ? O O O a - CD w w • y. V p m w l-- p d ho w °D¢ . i- a, ?.m = O J o ' 3 t-JQZ NOSOZZ O ? i W SN000 ? 12 > «.. LLJ I.- m IM Z O LLf cn ¢ z CZ=o -JU<1-W=- ??- o W LL. CD C ; SO• Qw0• N-m UOm p > }- N• CG?w• w N J w0 Om ZSNLLCLWO m ' N w ? v ? w l-- co--C< W 0 OUQZNU Z :LL - a. Z - -- ' U m... Lo N r W ¢ .Z m O E-..:j $ ¢N 0 QO Q E" CL = i \ O W H c) Z ? Zo Q w _ - 1 o -? U w (n N Q CL LU I ac ( z: ti ?? z c I t- 1 C!LU f F •ri i OI f OI ! 1 ln i? c D 2° March,19k ROCK P)PE 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' "Yt.: - :T6io:'•:..:a... i'sySf"' - :.fir^i~R:» Yfa.•j•? -AT'?:?Cy??ir.L: «.; .... r i, SY• wr'*=Yv::•?t•••? 4 fi F'. •!.'{.^ t"q ::?f?.pi??r't r?4. ?? kA,j.'i ?:.?.i. .. ??:..:,..•+? .3 W w F ?DE,WO .F 0. W m z6?'U7; mO F? _z zamw0=?-3ZmC-3 u 60 ?tnc° OWOVWGI=C?E? Wtcn- .zE- aE. 0co 0?2C?zZ60ca CL= <- -4 u FOB VFW . =Ca O a W O Z V z W Q== h c m w z u <mVMOEmdFpW„OZFAZ E-mv6zzzydp4CVzaU=w ?. O W;000 "FOZO UE-= z MWQ _ u tnMCUD.U a0F LL w CL .J a. 4x cr_ > LL ~ ? O Ln r r r r I r r 1 J 0 z u Z Z cn w 0 w 5 w , X ?? r L L t (L r ? D.. 1 ?• iW N 1 r r ? r r Z z Q ? J O ?. L ?• Z O pJ I m m LU H O _ H U W z ^ CC CL -o C W - Q z c ? Q LU ? v O , a-.. a_ fs:i = F- U Y E LLI U ? FT Ti f zi ? r ?tol i? r T E n 1 36 March,1992 _^..:.? C :. .. r, "- .f: ?' 1}?r•yatin+`n.•?11 - a•'.. _ _" :?'oy +re^..L?. a ?e y^+:w'-•?.:. ...; .i'L^ `:. _ "•.. -?Y ..t i. ;:y `?•,e'y„ .,ter aZRS,rr'?; 71- 7 i 't _ ' ":i. f?l. ^_•:..: i .. . !.i??.p's,;Y.? - ; ' S,(,.x - - •. a ,r?_?;Y,•a H r 4 .w ? _ r - ROCK SILT SCREEN: rock silt screen is •a low-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 & maximum ( shall not be higher than 1 & above normal flow of stream) 37 March, b92 1 4N > O ° N ~ ' -a . m I• 1 $ a QE-cc?z CFa?Z C.3 a. o E'r' o. ? Q " o ?oaaUO oak. za?z?? ozm?w ?? vFir E?w= CLQ Q -E- 0 04-0=WW -a Zq aoaaz ?ov? pzooz ?CT' '-I CL W E-z C4 zr? FW?C*1Epm?Cs7ZE-?O?G]> ?ocmevFi?map..a'p?mm . ?Zac?'?e.-saE= wfz-•MEZ•.-2 ca FfA 2_azzc?apCVZ?QE-p s ©°mui-V r?inC,aa..u rWn?c ;LU w W C Z 1..1? ° U LL (! ) J CIS V v' O rr- Ov_ MM i rr F' . X C '1. ?--- W OZ y c Q z a ?= Lo S s. W ?•? X, N N l?,t O 2,I NL • V OI vj Z12 FKE • ? 'gym vi O+ . j ?. 38 M=h,1992 ,•. :? 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