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19990360 Ver 1_Complete File_19990420
State of North Carolina Department of Environment and Natural Resources f Division of Water Quality James B. Hunt, Jr., Governor Wayne McDevitt, Secretary Kerr T. Stevens, Director 1 ? • NCDENR NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES April 23, 19992 Jackson County DWQ Project # 990360 APPROVAL of 401 Water Quality Certification and ADDITIONAL CONDMONS Mr. C.R. Styles Distri ct Engineer N.C. DOT ..P.U. B9x 250 Bryson City N.C. 28713 Dear Mr. Styles: You have our approval, in accordance with the attached conditions and those listed below, to place fill material in 0.004 acres of wetlands or waters for the purpose of improving SR1762, as you described in your application dated13 April, 1999. After ' reviewing your application, we have decided that this fill is covered by General Water Quality Certification Number3108. This certification allows you to use Nationwide Permit Number 26 when the Corps of Engineers issues it. In addition, you should get any other federal, state or local permits before you go ahead with your project including (but not limited to) Sediment and Erosion Control, Coastal Stormwater, Non-Discharge and Water Supply Water shed regulations. This approval will expire when the accompanying 404 or CAMA 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 approval letter and is thereby responsible for complying with all t" conditions. If total wetland fills for this project (now or in the future) exceed one acre, compensatory mitigation may be required as described in 15A NCAC 2H .0506 (h) (6) and (7). For this approval to be valid, you must follow the conditions listed in the attached certification and any additional conditions listed below. 1. Sediment and erosion control measures shall adhere to the design standards for sensitive watersheds (T 15A:04b .0024). 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 Water Quality under Section 401 of the Clean Water Act. If you have azy questions, please telephone John Domey at 919-733-1786. Sin ely, Stevens Attachment cc: Wilmington District Corps of Engineers Corps of Engineers Asheville Field Office Asheville DWQ Regional Office John Domey Central Files 990360.1tr Division of Water Quality • Non-Discharge 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 0 U) O C n x m O c n x m cZ ?o am a m V a ?n ?a M m z..1 O Oz 'n O x x uzi a 00 mr aZ ?a 0 z 0 O O O o o .. D D !-a 2 O O 0 Z n m .i co F-? cn .,.?-: . JM SfipF o % M1 7 ?TATE'0F NORTH CAROLINA DEPARTM? TRANSPORTATION JAMES B. HUNT JR.v. E. NORRIS TOLSON GOVERNOR SECRETARY April 13, 1999 Jackson County SR 1762 Mr. Eric Galamb Water Quality Certification Unit, DWQ P. O. Box 29535 Raleigh, NC 27626-0535 Dear Mr. Galamb: The North Carolina Department of Transportation is proposing to grade, drain, base and pave primarily along the existing roadway of SR 1762, Tanasee Creek Road in Jackson County. In order to construct this project in accordance with our current secondary road standards and due to the replacement and extension of four (4) pipe culverts in four unnamed tributaries of Cold Creek (DEM Class WS-III, HQW), we are requesting authorization under Section 401 of the Clean Water Act. I am sending a straight-line diagram with our proposed erosion control and construction limits at various sites along this project. In addition, a typical section of the road, drawings for the pipe replacements and extensions in the unnamed tributaries of Cold Creek, gener tes and standards on erosion control measures, and a marked County Map are erlc(o We propose to install the new culverts slightly below the existing stream bed etevatt6 e-bedrock is not encountered to minimize impact to Wildlife habitat and allow the existing stream gradient to remain as unchanged as physically possible. The best management practices will be used to minimize and control sedimentation and owAhis project. The construction foreman will review all erosion control measures daily to ensure sedimentation and erosion controls are being effectively controlled. If the planned devices are not functioning as intended, they will immediately be replaced with better devices. The silt fences..and other erosion control devices will be in place prior to pipe construction and will remain in place until the project is stabilized. P.O. Box 250, Bryson Cite, NC 28713 Phone (828) 488-2131 Mr. Eric Galamb Page 2 April 13, 1999 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, G C. R. Styles, P. E. District Engineer CRS:sd atta. cc: Mr. Richard Philips, P. E., Regional Engineer DENR Mr. F. D. Martin, P. E., Division Engineer P.O. Box 250, Bryson City, NC- 28713 Phone (828) 488-2131 i. DWQ ID: CORPS ACTION ID: NATIONWIDE PERMIT REQUESTED (PROVIDE NATIONWIDE PERA TT #) / k PRE-CONSTRUCTION NOTIFICATION APPLICATION FOR NATIONWIDE PERMITS THAT REQUIRE: NOTIFICATION TO THE CORPS OF ENGINEERS .2. APPLICATION FOR SECTION 401 CERTIFICATION 3. COORDINATION WITH THE NC DIVISION OF COASTAL MANAGEMENT SEND THE ORIGINAL AND (1) COPY OF THIS COMPLETED FORM TO THE APPROPRIATE FIELD OFFICE OF THE CORPS OF ENGINEERS (SEE AGENCY ADDRESSES SHEET). SEVEN (7) COPIES MUST BE SENT TO THE NC DIVISION OF WATER QUALITY, ATTN: JOHN DORNEY, 4401 REEDY CREEK ROAD, RALEIGH, NC 27607. PLEASE. PRMT. OWNER'S NAME: NC DOT District Engineer: C R Styles, P E 2. MAILING ADDRESS: P.O. Drawer 250 SUBDIVISION NAME: N/A CITY: Bryson City STATE: ZIP CODE: 28713 PROJECT LOCATION ADDRESS, INCLUDING SUBDIVISION NAME (IF DIFFERENT FROM MAILING ADDRESS ABOVE):, 7 , " !ct l!c?SP? lx'1n.d in `Tci.rk ph 6_70a ', 3. TELEPHONE NUMBER: (HOME) (WORK) (828) 488-2131 4. IF APPLICABLE: AGENT'S NAME OR RESPONSIBLE CORPORATE OFFICIAL, ADDRESS, PHONE NUMBER: Same as above # 1 5. LOCATION OF WORK (PROVIDE A MAP, PREFERABLY A COPY OF USGS TOPOGRAPHIC MAP OR AERIAL PHOTOGRAPHY WITH SCALE): COUNTY: C- h NEAREST TOWN OR CITY: C a t loL?) Lee- SPECIFIC LOCATION (INCLUDE ROAD NUMBERS, LANDMARKS, ECT.) y IC 76 Z T4 h nlSe C C ry P 1. pnc4 rj l.? ? Coo, & Z RI l 'b To r- 6. IMPACTED OR NEAREST STREAM/RIVER: Fear 6 0A n&rn J c1 ? ?????`-?? ??? ?-?-?? Gc°{''k' ? t• ?-? nn P P k V P r' ?c.s ?n RIVER BASIN L I L 7• (a) IS PROJECT LOCATED NEAR WATER CLASSIFIED AS TROUT, TIDAL SALTWATER, (SA), HIGH QUALITY WATERS (HQW), OUTSTANDING RESOURCE WATERS (ORW WATER ' SUPPLY (WS-1 OR WS-II)? YESW NO [] IF YES, EXPLAIN: _ )r (b) IS THE PROJECT LOCATED WITHIN A NORTH CAROLINA DIVISION OF COASTAL MANAGEMENT AREA OF ENVIRONMENTAL CONCERN (AEC)? YES [] NO [c] IF THE PROJECT IS LOCATED WITHIN A COASTAL COUNTY (SEE PAGE 7 FOR LIST OF COASTAL COUNTIES), WHAT IS THE LAND USE PLAN (LUP DESIGNATION? 8 (a) HAVE ANY SECTION 404 PERMITS BEEN PREVIOUSLY REQUESTED FOR USE PROJECT? YES Q NO IF YES, PROVIDE ACTION I.D. S THIS PERMIT AND ANY ADDITIONAL INFORMATION NUMBER OF PREVIOUS CERTIFICATION): (INCLUDE PHOTOCOPY OF 401 (b) ARE ADDITIONAL PERMIT REQUESTS EXPECTED FOR THIS PROPERTY IN TIIE FUTURE? YES O NO'S{ IF YES, DESCRIBE ANTICIPATED WORK: 9• (a) ESTIMATED TOTAL NUMBERS OF ACRES IN TRACT OF LAND: f l a '] /• 1(' Pic' C' (b) ESTIMATED TOTAL NUMBER OF ACRES OF WETLANDS LOCATED ON PROJECT SITE t 1.) C) V Ac k- C- 10, (a) NUMBER OF ACRES OF WETLANDS IMPACTED BY THE PROPOSED PROJECT BY: FILLING: A ,, R EXCAVATION: FLOODING: OTHER: DRAINAGE : T01-AL ACRES TO BE IMPACTED: t (b) (I) STREAM CHANNEL TO BE IMPACTED BY THE PROPOSED PROJECT (IF RELOCATED, PROVIDE DISTANCE BOTH BEFORE AND AFTER RELOCATION: LENGTH BEFORE: _ FT AFTER: FT WIDTH BEFORE (based on normal high water contours): FT WIDTH AFTER: FT AVERAGE DEPTH BEFORE: FT AFTER: FT ` 2 If (b) (2) STREAM CHANNEL IMPACTS WILL RESULT FROM: (CHECK ALL THAT APPLY) OPEN CHANNEL RELOCATION: CHANNEL EXCAVATION: PLACEMENT OF PIPE R1 CHANNEL: E (J L F CONSTRUCTION OF A DAM/FLOODING: OTHER: 11. IF CONSTRUCTION OF A POND IS PROPOSED, WHAT IS THE SIZE OF THE WATERSHED DRAINING TO THE POND? N/A WHAT IS THE EXPECTED POND SURFACE AREA? N/A 12. DESCRIPTION OF PROPOSED WORK INCLUDING DISCUSSION OF TYPE OF MECHANICAL EQUIPMENT TO BE USED? (ATTACH PLANS: 8'/," BY 1 I" DRAWINGS ONLY): To widen and nave SR J 7 1 to meet current NCDQt Standards by use of track hoes, bulldozers, dunp trucks back hoes, manual labor, etc. 13. PURPOSE OF PROPOSED WORK: Same as above in # 12 14. STATE REASONS WHY IT IS BELIEVED TIIAT TIIIS ACTIVITY MUST BE CARRIED OUT IN WETLANDS (INCLUDE ANY MEASURES TAKEN TO MINIMIZE WETLAND IMPACTS) To gain the needed width to build SR / 76-, Z- to NCDOT Standards. All Channel changes will be constructed in the dry. Rip rap will only be used for bank stabilization. Alders, Red Ma lp es, Black Walnuts Willows Svcam2res Dog?DWs etc will be re-established on the banks. All _pipe replacements will be placed slightly below the existing streambed gradient so natural f5: YOU ARE REQUIRED TO CONTACT THE US FISH AND WILDLIFE SERVICE AND/OR NATIONAL MARINE FISHERIES SERVICE REGARDING THE PRESENCE OF ANY FEDERALLY LISTED OR PROPOSED FOR LISTING ENDANGERED OR THREATENED SPECIES OR CRITICAL HABITAT IN THE OERMIT AREA THAT MAY BE AFFECTED BY THE PROPOSED PROJECT. DATE CONTACTED: Handled b Corps. 16. YOU ARE REQUIRED TO CONTACT THE STATE HISTORIC PRESERVATION OFFICER (SHPO) REGARDING THE PRESENCE OF HISTORIC PROPERTIES IN THE PERMIT AREA WHICH MAY BE AFFECTED BY THE PROPOSED PROJECT. DATE CONTACTED: Handled by Corps 17. DOES THE PROJECT INVOLVE AN EXPENDITURE OF PUBLIC FUNDS OT THE USE OF PUBLIC (STATE) LAND? YESX NO ? (IF NO, GO TO 18) (a) IF YES, DOES THE PROJECT REQUIRE PREPARATION OF AN ENVIRONMENTAL DOCUA.IENT PURSUANT TO THE REQUIREMENTS OF THE NORTH CAROLINA ENVIRONMENTAL POLICY ACT: YES E] NO • (b) IF YES, HAS THE DOCUMENT BEEN REVIEWE THROUGH NORTH OF ADMINISTRATION STATE CLEARINGHOU ESE YES C CAROLINA NO 0 IF ANSWER 17b IS YES, THEN SUBMIT APPROPRIATE DOCUMENTATION FROM O N/A THE STATE CLEARINGHOUSE WITH THE NORTH CAROLINA ENVIRONMENTAL POLICY ACT. QUESTIONS REGARDING THE STATE CLEARINGHOUSE REVIEW PROCESS S DIRECTED TO MS. CHRYS BAGGETT, DIRECTOR STATE CLEARINGHOUSE NORTH CAROLINA DEPARTMENT OF ADMINISTRATION, 116 SHOULD BE WEST JONES STREET, RALEIGH' NORTH CAROLINA 27603-8003, TELEPHONE (919) 733-6369. 18. THE FOLLOWING ITEMS SHOULD BE INCLUDED WITH THIS AP ACTIVITY INVOLVES THE DISCHARGE OF EXCAVATED OF FILL MATERIAL INTO IF PROPOSED NTO WETLANDS: (a) WETLAND DELINEATION MAP SHOWING ALL WETLANDS, STREAMS, LAKES AND PONDS ON THE PROPERTY (FOR NATIONWIDE PERMIT NUMBERS 14, 18, 21 26 29 ALL STREAM (INTERMITTENT AND PERMANENT) ON THE PROPERTY MUST BE SHOWN ON THE MAP. MAP SCALES SHOULD BE I INCH EQUALS 50 FEET O 'AND 38). OF THEIR EQUIVALENT. OF 1 INCH EQUALS 100 FEE (b) IF AVAILABLE, REPRESENTATIVE PHOTOGRAPH OF WETLANDS TO BE IMPA PRODUCT. CTED BY [c] IF DELINEATION WAS PERFORMED BY A CONSULTANT, INCLUDE ALL DATA RELEVANT TO THE PLACEMENT OF THE DELINEATION LINE. SHEETS (d) ATTACH A COPY OF THE STORM WATER MANAGEMENT PLAN IF (e) WHAT IS LAND USE OF SURROUNDING PROPERTY? SQUIRED. (f) IF APPLICABLE, WHAT IS PROPOSED METHOD OF SEWAGE DISPOSAL?. N/A (g) SIGNED AND DATED AGENT AUTHORIZATION LETTER, IF APPLICABLE. NOTE: WETLANDS OR WATERS OF THE US MAY NOT BE IMPACTED PRIOR TO: L ISSUANCE OF A SECTION 404 CORPS OF ENGINEERS PERMIT, 2. EITHER THE ISSUANCE OR WAIVER OF A 401 DIVISION OF WATER QUALITY CERTIFICATION, AND 3. (IN THE TWENTY COASTAL COUNTIES ONLY), A LETTER FROM THE NOR CAROLINA DIVISION OF COASTAL MANAGEMENT STATING THE PROPOSED ACTIVITY IS CONSISTENT WITH THE NORTH CAROLINA COASTAL MANAGEMENT PR RAM. OWNER'S/A N 'S SIGNATURE 3 ?C ATE E (AGENT'S SIGNATURE VALID ONLY IF AUTHORIZATION LETTER FROM 4 6 E t \ M µUIIEE FORK SALO / f1?? f35 E E C. JZ r. k k' ,nc?q p oGE ELEV. 6.065 / y/ EVEV 6,9f6 S II?EEV. 1w AY CCU CAN n/ LONE SALO O i • ELEV. S.680 c '- SNAGGY B?LO 1 u• ELEV. S.S36 \?? p I BLACK YIN. r _ \ ?' W E?tf v. 6.2 t5 I IN, L IA J Cx9St ..J! ROUGH SulI 840 _ N 1 'v ELEV. 6.010 -AF I?N?SEE 0?10 7 Bdeg?t?"I' M ELEV. S.622 i 1•/ a % tits +. . NIL ? C+O+• lyd Yri,.wN Vv cn. • ^.:;, Syqd„ N A T 1 0 N L t V I I noCKr \ .,... Kilos 14. n t.Flet? _ . I /? r u ! 1 1 ... Itff MCN YM. 1? 1 v ELEV. 5.500 1 »• ? CCe?K.? ? I?x 1 i js ?,. Jyy .,M1 ?.0754 ? a • ens IIIOo• / \ \ J 1 1 17Si Ch. 1" F I NORNEtNE?0 t PISGAH v : DOUBLE top • ? 1 1 Ir Sa. I \'•'\ 1 BALD ROCA Cn.? V 1 ? ? M 0A. L U7 Jim 1. CEC?R CLIFF _9 ( i' 1 N 1 r 118 CEDAR cuFF UIKE \ BEAR CHEER 1 F`- O R E S T NE YIN \ ZONAL \\ ` i3(?fc) O BELL ?IK ELEV. 4.400 BIG KNOB 1 1 ?.? O.E1K 6?P \•1 Gp 1w 11 flEv. 4.600 4 i , i 1 \. FI' 03 WAKE, s Ki I 0 C) lo 1. FOREST Lp - - • COLD WY. /t N Big RI•o•_ Ch. BL?CKRB(R YIN, •1A D 1 t ELEV. MO 'n , # . 1?• " 11 t 1 111 -2• lp / G 1l, ? • 1 L ?UNEI RIIOB F J 11 . + ELEV. 4.500 LIIILE NOCBKCK YIN. „_.1,,, .. 11 \ l lolaway ?•' 11' s • • . \ \ V 61 ELEV. JJ-0 it • . CAVE / . ELfv. A) CHIY11Ef top YIN. / EIEv. •,625 j ? 1 n O C 2 ti Y --1 70 D Z !n r D Z D r 1 i 11'. j. . I 0 1 - UNITED STATgS' "rAnJASF ?? CF,f i= F F")?''? TENNESSEE VALLEY -A, T i.MTERIOR MAPS AND SURVEYS .IA R1/ EY • ., Ac. Nt?Jv C l'? c r „3„V SW '. 120 121 57'30. 322 - 1 1 123 1(Swn Knob 184-S1'Il?I All t9o < .1, 1 ., . (?. ? . ?? `?. , `-??? -III) .'J,•' fI _ r ??-.?: 4? r •, "`? 1? i r r ? 2, l 'l • • ?l. `'\' '•t` ?) '? /i ?' 1? `1\l` ?,` 1 1?9 558 ' \ :'/ /- ?''?r` tiw?'? ;. `?.'.)111J?'? ?TII`? 'i ?,?\ '? 1? 711 :.1?.? ..r1.1?`II>?.>,l ? ••/II -?i'i- ?'f`?> ?` ??1? ,? ( /`[•, ?, ? ??`, ? l 1 '? I I?if•I?S\?:.. ..)?I• •r ,':?•1,11?' II ?\,I ??1 II•\I. ,', `. I'. ,?,/ `1-1 ;r "-?/"'1?\lJl ir?/ "? ?"- y1 t t. ?11r `,?. 'I i ?,? 00• /' •`:. -''/ ?1?''li ,' 11 I1 O ?.,? f ??`?? -?? ?.ll l X11 7 \ ( 1 ' V) n\ ,(<i?? ` •? i?;'? ??1 ?? ; ill' 1, _`-'' ./'ci`:' k ,??•,;?' ???? J? ;>,? \.-- )? ? - ?.SrrEf?fi Il(? . ?'..?? 3•x•1 -?- ?- 3697 R t N11 Fm t -? Z r )1? 111 {{ ; JJ, (? `03 o).. Ga 1 (/> !f, '` _ _ :x^ od3,1C1,?.??? p § ^I J -?. ??it^J ;0°,1\/ ( Sj ) 1 ?QaO . ;.1\'a.? , !`as'?7 (lam )?? "?. J ? / ?? ?"I ?- Ir?.?' ( 1 .•,' ;! ? .t, , ?' \ ? , 11 ''1 1' jl .t •: ,`''•`•?r?1• ' v'-:'•t ?;?\,. ?,?, ?,, [? `-j ? i3-1.11 '? `• r ?' ` \ , .tl It ( ? `C• \?? ' \??`t;? )"[ ` •? ??!Ic "J '\4???-?-.? \? e-n 1 .jam; ??- ???f f ? ?? ? ) ? (rte--?5 -5?55?5` •,; J??1? ao :'\??.?:,?•,?. ?.oo? ? ;'>> _, '? • c ( ;?,o, ? \.- .`:\ l r \ 1. \\ wk ,\?,t? lt• 1. < , \ i' :, '\, '\ ? ? t1 ?\??\\` 1 ?.? t .', '+ ? ?' ? 1 ? ? 1? I • 1 ? ? ? ?' 1 • ?` ? ? `„S' Allser. ., ? \-__';, '?4.p,! t\•'':\ :Jll ( (` ?1'?;\1 1'?' IIIF?1 ,,1(r•1. t •r CO. ROAD NAME _ - ,._. S_R_ ,?? a G 96Z Vr.0 FROM E.yW dF Ze AIC 19 vA"E1v1* LcJOr,1Ec/ f.o.c+ L'nd cF iVOfe: ,2/c.. '7o Abe_ O E.dc? OF .tQ.?/aC .t/ •'liGN r.wccS?.4GrU0 tG 541 ?A ?Cv^ L?D{TION IMPROVEMENT TO BE PAVED P. POLES TO BE MOVED T. POLES TO BE MOVED - O R /W WIDTH SCALr I" = 50 9 3' EROSION CONTROL DETAILS AND. SPECIFICII-kTIONS ?r s .ri ti .? Symb ol- 245.03 Temporary Silt Ditch ..:........................... ?o 245.05 Temporary Diversion ............................. .? ro 893.01 Temporary Silt Fence ..................... . 890.05 Temporary Slope ' Draln with Earth Berm „„... ?-- ?-- 245.01 Silt Basin Type A ............:.*........ ........ 245.02 Silt Basin Type B „ .....................:. .....:.::........_. 892.04 -A Temporary Rock Silt Check Type „•,..,,, 895.10 Temporary Rock Silt Check Type-B ............ > 892.01 Temporaryj Rock Sediment Dar; Type-A ,.,.,,,. 892.02 Temporary Rock `ec'ment D .-n Type-3 ?- ? ,,, 8-n7.01 Rock Pi rioe .n{a., t ti,ot.3'.^.., 'lon y { ? ?rrE.-f1 ........... 6: 7.02 Rock. Pipe Inlet Prole -.'' :' Ty,oe-3 ............ 894.01 Rock Silt Screen .......................... ................... 245.04 Stilling Basin ............................... ........... fRI Rock Inlet Protection: 896.01 Type A .......................... ...._. A M -- OR . A ) 896.02 Type B . .............................. B 'E -• OR -- B 996.03 Type r ............................... IF .. .. __..._i OR .. ?? C 12 ' ! March, 1992 :.. C:Ontrot of Access Line.'........ •.. .. - A Sloe St, c fine .................. . -- t= Brid e " .• ............. . ?. Culver .:. ..... ........ ....... . ''S'oot s ...... .... ............. . • . eleYrul?li Pole ......... ?? I or.'' li t?t? o e zp p. I 1, 1rlt0 . -` -? - -- Tower Pole and Line... ......... .. • ....... ............. . Power Pole . I I: N I. I' S 1 I I' I l O I' d I . Easerllcr?'t Ltlae ..:.:....... . . • • . < ... . Guard Rail ..' ....:................'.. . S,;nitar Sp. er•Line. .:.............. -? ' Water Lln? .......... .. . bas Line .'.. ..' ............. IIItOt'usr:u r:;cls'I'I-Nc Chair Li»l: Fence-' ................... .. , . . ce h Wi -'? . .....• .... en re ,Woven Reocn 'racloli ........................ lZcforesLatlnll .. ......... • • • • • • • • • . ? -._Cni ;ovary Silt Ditch ............... . :.Iporaly Silt Fel,c e ............. Tcr;Do rary.Slope Drain ........ ..... . Brush Barrier Silt Check Dam 'lyj)e A-..: ...........:. . n $.dt Check Darn IWe B ........... a ... . Silk 3asin l -Pe *A* ' ....:' . ... ......... _,. , l J`] G a s i n T??p e B .. ..... .... •.. . ' Silc Check Dam ..a; Lti, P.crm .... .....'.: .......... . fcrr.r. S Icne Ditch Check .... • , 1i il , I r 1 ?a 11 yuck ? ?; ? v?,e V62) v U T. y S'J D.Fit? ?` . 3 ?\ 7 EROSION USA ONLY _zv >^ Yd s C / En?C rN of y/s7,1111 3Ev g,5,4 26 L?wGr'/? aF v?srae9ED /LRE/L 21) 6-N 7 IV di- J„sr?rcaEy AR?"A yi o QfOU ?? ? v -? I so' c ' v vv J D ? 1? ? I i I I I L -J. Ill G/ S O «oo ie r 7 C i 15 N o ?-oc C) r . tj - ?J C -e 5 ?I a? ?p o to w Iu aA u.. u4 a? le" c P ?XiS inl & ? I I i I I I i -IF ?r II Pkn used I v 1 OG' ? ' OG 4. 1 r 1, 5 la I T I i? CMI' 3 . cr ? I I . 1,5 fQ " CG I I ? j G 0 s ? oc r I I 7 y I .G7.5 WC /I/ ?? ` 7r IRI10 I i I t? JG 1.C? ? :? lOQ 4 Sol GN I I fil so ' c-Lpp ??ti HOC IS ?? I I 1 l? I I I i v L • ?v+,cC 1 I I ? ! I S o, ,e 18 c??r J/ Z-A00 ?l8`ct+p d 00 I 0 ; I I I I i I° ;y - F^ r a L 0 yb i- o0 t dU -Loo So ?aG 1?1 S 0? Q 1 I PRO ID < I ? I S 0? i i C. 11 o?t00 S I' - _,?.5 rum I I ? 1 -S I i 1 ? I o- 0 -r- I '-r 1 .S I 8, ?.? pp f ?p X00 -? 1 S O? i 2Y"??mP I ?!o CM i' 7 !?o esEo T I i. rr I? - s10, li Zoe z C . s 10 / 1 g S0 ? '9 ' 7d ?o0 70 ? 00 I I L°. .1. 2`I N C P o?oa ? ?9 2. %5 = 0G ?s?CO • I• i S 0? I I I i 7( r ?^ & CMp r?? p• sc„i 7 i 100 s 0• i -?• ? OGJE.{% /'/E E ?y Ale e c T OJT I1 1 so- I I I ? I C i ' i i p CO) L -HECK TEMP STONE P 11 C H ROCK SILT CHECK DAM SILT BASIN' - B TEMP SLOPE DRAIN TEMP SILT' DITCH TSB EARTH EMBANKMENT -? -7 -? SILT FENCE -01 H'ill FIBERGLASS ROVING ?;-- EGR RIP RAP ??' TEMPORARY SILT FENCE: ' A temporary silt fence is corgi monly used at the toe of a fill section to prevent.off- site sedirfi6ntarion. 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 divdrt 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 ft. Without Wire Type 3 Class B 5 ft. 6 ft. maximum 17 March, 1991 - 1 W y a? 3z r.w Q W UV a F WO CLI O 3 C N z Q m ?¢Jt (al o? c a ^zo i Cn L z_ ez F -? i O Q FU F mo G Co Z ¢ w n. a o- F N U CC a a' W r W 3 -- C II?_ vU II CW W E- j?.i -------- a w m OF - z wW I x- _ W3 U I I !_ C Ca. Cn ¢ m =;il it ?- 1 ?• i m ? ? v L r ` Q Cal _ C'l L z C4 a C w (n Z - E- Z 3. ul C i? Z T Z ¢ ¢ rr (yl ? (L r Ltl L > -' CA Cal ¢ :tl (n V) C -?L L ¢ Z:il ? Q -?...ui ¢ Cal ¢ o CL ©n0 C l U=?- y AW a ?CF L C :. W Cm a Q 3 >- cn ¢ x¢ C W r © O Ca Z W _W in z a zCC QF u .'C_W, in F- CLI r- UW Z?mF C W V) ;- -, Co Co u (a CLI j = Cl E- w F-Cj F 3 a s Cn = En U WZ O z4 ca Q_ Z -C Cn OCa = =¢ , °;m _C- . III U J (-, L' r O -E (Y z O Lv 1 ! 1 SON O Cr f U) z 3' . Q. C' w =:C3. Z' z -: W. INS T .w. . •i ¢ 1 8 March, 1992 SILT BASIN TYPE-B: -A silt basin type?B is a temporary basin built to collect sediment flowing .d rough a drainage. way. The.'silt basin is built at the base of the. ditch with its lenith being at least 2 times the width of the basin. The type-B silt basin is generally built in conjunction with temporary rock silt checks and other devices that control or slow down water flow. This device must be monitored closely and cleaned out on a regular basis until grass is established along the ditch line and sedimentation is no longer a problem. AREAS OF USE: • In conjunction with temporary rock silt checks and other devices used in drainage ditches. DESIGN CRITERIA: • Width - variable Length - 2 times width • Depth - 2 ft. minimum storage - 1800 cubic feet/acre (equals L x W x D) 23 March. 1992 a 0 I, m a W? m O p!N f?N - s ?I ??: ? 'IIIII = = u = a = iill? 7 = m = !iIII m I I ! I W -i. I _ IL l?III! Hili lil? l IIi m ?Z z Y w (n Z a - - ? w .. q. I I i ! m i ` C3 Q s H ?! b = Z I I G ` i. J ? i l • Z• 24 March, 1992 ROCK PIPE INLET PROTECTION TYPE-A: qe ale e . owe v • A rock pipe inlet protection type-A is a horseshoe shaped stiuc?sre with a built sediment sidrage area around the outside perimeter of the sm cture. The type-A rock pipe inlet protection shall be used at pipe inlets no larger than 36 inches in diameter where it is receiving flow from several directions. The type-A rock pipe inlet protection utilizes class-B stone lined with #5 or #57 stone to protect drainage pipe structures by trapping sediment before it enters. They have a sediment storage pit which is designed by the same procedures as a silt basin. AREAS OF USE: • At inlets to pipes no larger than 36 inches in diameter where it receives flow from several directions. • In areas where it can be cleaned and maintained on a regular basis. DESIGN CRITERIA: • Structural stone - class-B stone • Sediment control stone - #5 or #57 stone • Sediment storage area - 1800 cubic ft./acre • Dam height - 3 ft. minimum 33 March. 1992 w tl a. ¢ ~ _I w I ..7 W W p E- i < - z Z z F E W z p N 6 p Z NQF m < CL F'n Z a., W ` m ?c z W wo JWCFta N. w z m a V a p W C O W Oawca x f- a. : m p w F N W w U. F -1 : z J V) W. 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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. 1992 .y m O _l g ? W a- 0 m i a m g ...7 W W E' 2 m Z ?ZE- a a 3 -C U3 Z CF 0.0 0 0a=W 0F? fnZZF Fm [s. WoaacW?a -a6 V] ma2 0?c:. 0Om0mW a W cevi -a-d Fa= c.. o. E.O?E V) W m Z <Z. 0.? m C.3 ca .4 a -C VO?UEO--0o0z .7. ta. V G. 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