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HomeMy WebLinkAbout19980550 Ver 1_Complete File_19980611State of North Carolina Department of Environment and Natural Resources Division of Water Duality James B. Hunt, Jr., Governor Wayne McDevitt, Secretary A. Preston Howard, Jr., P.E., Director A 16"k 'T7 4 t)A NCDENR NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES June 24, 1998 Jackson County DWQ Project 980550 APPROVAL of 401 Water Quality Certification and ADDITIONAL CONDITIONS Mr. C.R. Styles NC DOT PO Box 250 Bryson City, NC 28713 Dear Mr. Styles: You have our approval, in accordance with the attached conditions and those listed below, for the purpose of paving SR 1705 in Jackson County, as you described in your application dated June 11, 1998. After reviewing your application. we have decided that this impact is covered by General Water Quality Certification Number 3103. This certification allows you to use Nationwide Permit Number 14 when it is issued by the Corps of Engineers. 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 Watershed 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 for a new certification. 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 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. 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 conforming 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 any questions, please telephone John Domey at 919-733-1786. , -Sincerely r ton w r. P. U Attachment cc: Wilmington District Corps of Engineers Corps of Engineers Asheville Field Office Asheville DWQ Regional Office Mr. John Domey Central Files 980550.1tr Division of Water Quality • Non-Discharge Branch 4101 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 •? P 1 C-? VVV 6?1 STATE OF NORTH CAROLINA h; DEPARTMENT OF TRANSPORTATION JAMES B. HUNT JR. June 3, 1998 E. NORRIS TOLSON GOVERNOR SECRETARY Jackson County SR 1705 Mr. Bob Johnson 215 Army Corps of Engineer Reg. Field Office Room 75, Grove Park Ave. Asheville, NC 28801-2714 Dear Mr. Johnson: The North Carolina Department of Transportation is proposing to grade, drain, base and pave primarily along the existing roadway of SR 1705, Dark Ridge Road in Jackson County. In order to construct this project in accordance with our current secondary road standards and due to the replacement or extension of five (5) pipe culverts in Dark Ridge Creek (DEM Class C Tr), the extension of one (1) pipe culvert in Jones Creek (DEM Class C) and the replacement of one (1) pipe culvert in an unnamed tributary of Jones Creek (DEM Class C), we are requesting authorization under Section 404 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 in Dark Ridge Creek, Jones Creek and the unnamed tributary of Jones Creek, general notes and standards on erosion control measures, and a marked County Map are enclosed. We propose to install the new culverts slightly below the existing stream bed elevation where bedrock is not encountered to minimize impact to Wildlife habitat and allow the existing stream 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 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. By copy of this letter I am asking Mr. Mark Davis, Habitat Coordinator Western Mountain District, of the NCWRC to comment directly to you concerning the 404 Nationwide permit request. P. O. Box 250, Bryson City, N.C. 28713 Phone (828) 488-2131 Mr. Bob Johnson Page 2 June 3, 1998 Also by copy of this letter, I am requesting authorization to proceed under Section 401 of the Clear Water Act from Division of Environmental Management. In addition, I am asking Mr. Davis and Mr. Ed Ingle, Area Roadside Environmental Engineer (NCDOT), 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 consid ration will be appreciated. Yours truly, C. R. Sty es, E. District .. eer CRS:sd atta. 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. Mark Davis, Habitat Coordinator W. Mtn. Dist., NCWRC CORPS ACTION, ZD:_ ,_. NATIONWIDE PERMIT REQUESTED (PROVIDE NATIONWIDE' PERMIT I#'.) PRE-CONSTRUCTION NOTIFICATION APPLICATION FOR NATIONWIDE PERMITS THAT REQUIRE: 1) NOTIFICATION TO THE CORPS OF ENGINEERS 2) APPLICATION FOR SECTION 401 CERTIFICATION 3) COORDINATION KITS TEE 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 SHOULD BE SENT TO THE N.C. DIVISION OF ENVIRONMENTAL MANAGEMENT (SEE AGENCY ADDRESSES SHEET). PLEASE PRINT. 1. OWNERS NAME: NCDOT - DISTRICT ENGINEER: C. R. STYLES, P.E. 2. MAILING ADDRESS: P.O. DRAWER 250 CITY: BRYSON CITY STATE: SUBDIVISION NAME: N/A NC ZIP CODE: 28713 PROJECT LOCATION ADDRESS, INCLUDING SUBDIVISION NAME (IF DIFFERENT FROM MAILING ADDRESS ABOVE) : SR 170..5 - DAgK- RIDGE R.D. 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 S. LOCATION OF WORK (PROVIDE A MAP, PREFERABLY A COPY OF USGS TOPOGRAPHIC MAP OR AERIAL PHOTOGRAPHY WITH SCALE): COUNTY: .SPCKSOni NEAREST TOWN OR CITY: BAL. SA/r7 1 W W W 0 0 ?? W m r W W - ? I N O cm r F Wmm,n + N N S ? I =OX -0 W(n taUOU IY W T _ z W .-?4 U .U+ O W W F->•0v 2O -n2 N O W F ?7aS F.L U1f WI r^?I v, WI a u zi WI ?I V1 W M u a d VI W r, 2 e W W U W W W _ O a U W c'1 W W ?[• La La W 1 I - - I ? ?.. .. ... _ _ J I" W. C. J ? T ,n U W t.l v• : W C r r cr. U W l' O I,1 n, u W0- w W Vl CZ) S Mo. C', _ y ~ C1 W I, Q 0 ' 1 r .: a ? tL w W W n x[ F' W N v - f V In N 'n r r? ,•] c? W d I. .( N O •G W F F ' - 4 W W - ,U - O r W 1 W Q N 17F- W ?.. Q 4 m tM1 • W ,( O, W ? - w o r N F O v1? N i SF- Q W 'o 0 40m 4. 0..I, r n V1 ? Uv1- - W F W W N "C . r O1 . ,p W rY - ? x A W W s U O¢ 7. - FOQ O-o, I W Jt m w r _ U _ F m E- 1 - - 22 ' O 2 r w a: m W .? W N W O -? t` ? ?- W !- I ^ 0 W r O W T 2 w r W .-. F W m v W C cr. (? N > U G• - c? W > cc w tr(n J Xdxd a: U O I (x c - S UO -7 - F p o . aCF 4. La I w It cr -j 0 J - F19 W W W - _ W Cu I- .L ] r .( F ? F U - W F W J l ) V1 - Q .. y W (L VI( W S 0 ? pl W W O 4 F U 1 ( W W 4 o (, y W o _ . ^ O I? W R ? rv O w n Inl F zx VI '?' F W r'1 ? WI .•. ,O o F W T D W r w • .r ' U m r? . W -j w w T N W W - '•+ w r I iLZF 1 W r W ( I ? w 1- ,. U r = I m .?t? 1 u .. . ¢ W n V l F OO I tr .7 r1 U. (?W .V J(y ,:, ar H M W C F•-? Q O0. f Scrm t!( •-W ulr .. = C l W N y W _w i t ft w V 1C1 cr. W ?•• T Ow_ 0 - K T.. O d _ W oil N F O F r^ - 'V rc r,• 7 yl f? N V• O w-4 W " , ,,.I ¢ rv UUrv N r 8 W n F- y W F x F .. J cn w wn(1- a W . cG O bU- 4 0 W 7W V1l1 Q , (6 ( ,?y 1?0• . It 2 .. O-- U O O - d n _ 2 L. W W - 5 - W- x f ) 'o W N c• WO - cc (J r W cn U F - oy o = . cc ui .1 . 1 (1m d o4(y O bz?? y? W (yx y CL. • W W W 1- F W W F ?+ F W r w w 4 W •L N 7d w w L1 ?O (n f, (1?,ww Q SwamJW d ..i rtn-4 W C ( cr. a F t: F W in - F. F+ e( O W O - C - .. Q F- U Q N N T W ¢ S ,O d F SPECIFIC LOCATION (INCLUDE ROAD NUMBERS, LANDMARKS, ETC.) SR /705 RA RA- E /FoA),> OFF OF ?/S 231711 /N TAC dr sa:.> ?o c?.?• rY 6. IMPACTED OR NEAREST STREAM/RIVER 'DA2L SZIDGF- 2EGL' (oem CLAs5 C ToniES CREEK (pE/?1 CLHSSC RIVER BASIN: LITrLCC- TGNI?IL C ?i UL+? BPtsi f 7a. IS PROJECT LOCATED NEAR WATER CLASSIFIED AS TROUT, TIDAL SALTWATER (SA), HIGH QUALITY WATERS (HQW), OUTSTANDING RESOURCE WATERS (ORW), WATER SUPPLY (WS-I OR WS-11)? YES (>(j NO ( j IF YES, EXPLAIN: G?Ass C fiRooT 0 - CtAssr- - 7b. IS THE PROJECT LOCATED WITHIN A NORTH CAROLINA DIVISION OF COASTAL MANAGEMENT AREA OF ENVIRONMENTAL CONCERN (AEC)? YES ( j NO (XI 7c. 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? N/A Ba. HAVE ANY SECTION 404 PERMITS BEEN PREVIOUSLY REQUESTED FOR USE ON THIS PROPERTY? YES ( 1 NO (/?(] IF YES, PROVIDE ACTION I.D. NUMBER OF PREVIOUS PERMIT AND ANY ADDITIONAL INFORMATION (INCLUDE PHOTOCOPY OF 401 CERTIFICATION): Bb. ARE ADDITIONAL PERMIT REQUESTS EXPECTED FOR THIS PROPERTY IN THE FUTURE? YES ( j NO IF YES, DESCRIBE ANTICIPATED WORK: 9a. ESTIMATED TOTAL NUMBER OF ACRES IN TRACT OF LAND: io. 93 9b. ESTIMATED TOTAL NUMBER OF ACRES OF WETLANDS LOCATED ON PROJECT SITE: c Ff s rE O ACRES No ADD iT/o.?AL BLVf' LNA/E Sr,P6AMS Cj"-a ? E . O. 2 10a. NUMBER OF ACRES OF WETLANDS IMPACTED BY THE PROPOSED PROJECT BY: FILLING: O/ Ac2? s EXCAVATION: FLOODING. OTHER: DRAINAGE: TOTAL ACRES TO BE IMPACTED: ?•0/??? £S lOb. ? (1) STREAM CHANNEL TO BE IMPACTED BY THE PROPOSED PROJECT (IT RELOCATED, PROVIDE DISTANCE BOTH BEFORE AND AFTER RELOCATION): LENGTH BEFORE: N A FT AFTER: FT WIDTH BEFORE (based on normal high water contours): E'T WIDTH AFTER: /??j?? FT AVERAGE DEPTH BEFORE: FT AFTER: 1'11A FT (2) STREAM CHANNEL :?!PACTS WILL RESULT FROM: (CHECK ALL THAT APPLY) OPEN CHANNEL RELOCATION: /v/An PLACEMENT OF PIPE IN CHANNEL: 208 L.F CHANNEL EXCAVATION: All, CONSTRUCTION OF A DAM/FLOODING: YIa OTHER: ?101vl- 23 SAS 6-'AlS IS cx/ST/.-/G P1 PE E/N !PE tE!) aQ l/Psnc-' 11. IF CONSTRUCTION OF A POND IS PROPOSED, WHAT IS THE SIZE OF THE WATERSHED DRAINING TO THE POND? N/A WHAT IS THE E:CPECTED POND SURFACE AREA? N/A 12. DESCRIPTION OF PROPOSED WORK INCLUDING DISCUSSION OF TYPE OF MECHANICAL EQUIPMENT TO BE USED (ATTACH PLANS: 8 1/2" X 11" DRAWINGS ONLY) : TO WIDEN AND PAVE SR /7y S TO MEET CURRENT NCDOT STANDARDS BY USE OF TRACK HOES, BULLDOZERS, DUMP TRUCKS, BACK HOES, MANUAL LABOR, ETC. 13. PURPOSE OF PROPOSED WORK: SAME AS ABOVE IN # 12 3 14. STATE REASONS WHY IT IS BELIEVED THAT THIS ACTIVITY MUST BE CARRIED OUT IN WETLANDS. (INCLUDE ANY MEASURES TAKEN.TO MINIMIZE WETLAND IMPACTS) : To GAIN THE NFFnFn WTnTH Tn RIITI n SR /705 TO N .nnT STANnARnS Al I CHANNEL CHANGES WILL BE CONSTRUCTED IN THE DRY. RIP-RAP WILL ONLY BE USED FOR BANK STABILIZATION. ALDERS, RED MAPLES, BLACK WALNUTS, WILLOWS, SYCAMORES. DOGWOODS, ETC. WILL BE RE-ESTABLISHED ON THE BANKS. ALL PIPE REPLACEMENTS WILL BE PLACED SLIGHTLY BELOW THE EXISTING STREAMBED GRADIENT SO NATURAL SUBSTRATE CAN BE RE-ESTABLISHED. 15. YOU ARE REQUIRED TO CONTACT THE U.S. FISH AND WILDLIFE SERVICE (USFWS) AND/OR NATIONAL MARINE FISHERIES SERVICE (NMFS) (SEE AGENCY ADDRESSES SHEET) REGARDING THE PRESENCE OF ANY FEDERALLY LISTED OR PROPOSED FOR LISTING ENDANGERED OR THREATENED SPECIES OR CRITICAL HABITAT IN THE PERMIT AREA THAT MAY BE AFFECTED BY THE PROPOSED PROJECT. DATE CONTACTED: HANDLED BY CORPS (ATTACH RESPONSES FROM THESE AGENCIES.) 16. YOU ARE REQUIRED TO CONTACT THE STATE HISTORIC PRESERVAT:ON OFFICER (SHPO) (SEE AGENCY ADDRESSES SHEET) 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 OR THE USE OF PUBLIC (STATE) LAND? YES pd NO (I (__7F NO, GO TO 18) a. IF YES, DOES THE PROJECT REQUIRE PREPARATION OF AN ENVIRONMENTAL DOCUMENT PURSUANT TO THE REQUIREMENTS OF THE NORTH CAROLINA ENVIRONMENTAL POLICY ACT? YES f ] NC x b. IF YES, HAS THE DOCUMENT BEEN REVIEWED THROUGH THE NORTH CAROLINA DEPARTMENT OF ADMINISTRATION STATE CLEARINGHOUSE? YES ( j NO ( ] N/A IF ANSWER TO 17b IS YES, THEN SUBMIT APPROPRIATE DOCUMENTATION FROM THE STATE CLEARINGHOUSE TO DIVISION OF ENVIRONMENTAL MANAGEMENT REGARDING COMPLIANCE WITH THE NORTH CAROLINA ENVIRONMENTAL POLICY ACT. QUESTIONS REGARDING THE STATE CLEARINGHOUSE REVIEW PROCESS SHOULD BE DIRECTED TO MS. CHRYS BAGGETT, DIRECTOR STATE CLEARINGHOUSE, NORTH CAROLINA DEPARTMENT OF ADMINISTRATION, 116 WEST JONES STREET, RALEIGH, NORTH CAROLINA 27603-8003, TELEPHONE (919) 733-6369. 4 18. THE FOLLOWING ITEMS SHOULD BE INCLUDED WITH THIS APPLICATION IF PROPOSED ACTIVITY INVOLVES THE DISCHARGE OF EXCAVATED OR FILL MATERIAL INTO WETLANDS: a. WETLAND DELINEATION MAP SHOWING ALL WETLANDS, STREAMS, LAKES AND PONDS ON THE PROPERTY (FOR NATIONWIDE PERMIT NUMBERS 14, 18, 21, 26, 29, AND 38). ALL STREAMS (INTERMITTENT AND PERMANENT) ON THE PROPERTY MUST BE SHOWN ON THE MAP. MAP SCALES SHOULD BE 1 INCH EQUALS 50 FEET OR 1 INCH EQUALS 100 FEET OR THEIR EQUIVALENT. b. IF AVAILABLE, REPRESENTATIVE PHOTOGRAPH OF WETLANDS TO BE IMPACTED BY PROJECT. C. IF DELINEATION WAS PERFORMED BY A CONSULTANT, INCLUDE ALL DATA SHEETS RELEVANT TO THE PLACEMENT OF THE DELINEATION LINE. d. ATTACH A COPY OF THE STORMWATER MANAGEMENT PLAN IF REQUIRED. e. WHAT IS LAND USE OF SURROUNDING PROPERTY? RURAL WOODLAND, RESIDENTIAL f. IF APPLICABLE, WHAT IS PROPOSED METHOD OF SEWAGE DISPOSAL? N/A 9. SIGNED AND DATED AGENT AUTHORIZATION LETTER, IF APPLICABLE. NOTE: WETLANDS OR WATERS OF THE U. S. MAY NOT BE IMPACTED PRIOR TO: 1) ISSUANCE OF A SECTION 404 CORPS OF ENGINEERS PERMIT, 2) EITHER THE ISSUANCE OR WAIVER OF A 401 DIVISION OF ENVIRONMENTAL MANAGEMENT (WATER QUALITY) CERTIFICATION, AND 3) (IN THE TWENTY COASTAL COUNTIES ONLY), A LETTER FROM THE NORTH CAROLINA DIVISION OF COASTAL MANAGEMENT STATING THE PROPOSED ACTIVITY IS CONSISTENT WITH THE NORTH CAROLINA COASTAL MANAGEMENT PROGRAM. ,. OWNER'S/AGENT' TviyE -3 /998 DATE GNATURE (AGENT'S SIGNATURE VALID ONLY IF AUTHORIZATION LETTER FROM THE OWNER IS PROVIDED (18g.)) 5 Jr-- - " T1 NN ys. o* KWAY 9J Liu Pet ?P.,k Mainl?rwn e / ` -? ,t Balwln ? / / 177 IdI??' ?7 lu1 ?ffi_ .77 r ! ICJ. `?? ? 17 M M 1 .? \ \" t7 ]3 11)7 ly?Qfj J /. Baleom 0 1 A y '/ Ill 7 77 114, 7a 7c' C? r- J „9a ,707 w 'I '- 7.5 N A T 1 O N A L '108 s , 10 ve7 ? 1 t31 ve. r' F O R E S T / of J ,7s. ,92 ? vw f? n b X17 VO7 i Willih 110. I... ?, 77e JJ / / ,, 1b ]o 17ej X707 :nq IM 107 n v le.( er , Ob 3o CASHIERS nla 35 33 1111 o N 07 1 114 'O e M1, O • JO 1` O b - 12 n t J9i '919 3918 -I4 - -' /. I \ Y e 2 ? k\ ? - ? ' % mi ? ? ? I1/ \_ ? ? \ ? /fir"• ?.7Iv??\1 P° i' ? i 8 1 923 ? . 1 1 0 •.t I , , 'r _ ? _,- ??'• \ AAA ?'?In 1/ ? ?' /?° r. J / ?• 1 ' • ? iq, i -- ?? J + \ I //w C T ?I 00-1 P A., '? J 1 LP 5 . rl ???. R)1 DI? 000 1 i'Z '??-- Oil f PlWBAn d A/l 17 ,, -?'` to °° ??-. . ?.? ? p°° l •\ '%? ? ? / 4000 -)j fl 5 po' TEMP STONE DITCH CHECK ROCK SILT CHECK LOAM SILT BASIN - B TEMP SLOPE DRAIN TEMP SILT DITCH .-TSII- EARTH EMBANKMENT SILT FENCE 11! 11, H! FIBERGLASS ROVING =- FGR RI P RAP ? ? A- P?- ' 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 With Wire Without Wire Fabric Type 3 Class A Type 3 Class B Steel posts length 5 ft 5 ft. Post spacing 10 ft. 6 ft. maximum 17 March, 1992 Ij ° I? Li I I I ?? z _ ? dz _ i I I- UU - az i I mW Lli z c-- --------- of LJ i WL4 ?? dry ? .r I? i C m3 ? UV U '•? it I E.. d - Ca 3F V - m Cal d Fp \ Ga. F i = f i - w - z CQ Z ?-- c •, Nom. ` ? z ? ?- o Cal _ d ©Cal - ?- l._ - -_ E• i? ? 3 dam ?aE``'-m=i? CIS dz - d??on. Z N ,c= X=w m _ c i0 -d3 m3 d} ?CfaJ Cw Od a7pZW - FO zC7CW 7ZW a]? dCn z!=Z Cal n .l Z E.. Z c. Cal F Cs] 0:(Z nm F3 dCa. V?nvU z O Z Ca. 0. Ca. d- Cal Z (n d ...1 Z - O cn O Ca.J W ? N ? d W O .r C m 7 ¢ 1 8 March, 1992 SILT BASIN TYPE-B: A silt basin type-B is a temporary basin built to collect sediment flowing through a drainage way. The silt basin is built at the base of the ditch with its length 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 p N Z G C ? F ? •r. i N ' ))11 ) ?? ? ?IIIII 1 Him T I I I' Z J I c ? b y.. ..0 •.Z ? .f ? J o )7,`) I ? Q Cam':: Z -I! W dWA WA O co m -- E O Z 24 March,1992 ROCK PIPE INLET PROTECTION TYPE-A: S'_,$ • •. e• • A rock pipe inlet protection type-A is a horseshoe shaped structure with a built-in sediment storage area around the outside perimeter of the structure. 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 0 Z,m J CO 2 ? Q X ?J CL U. W Q s ., W Cl Z 1 CL w a a r Lu a: a >- c- cr CL w ? ire ¢ i Z W i > O w Z. %4J O Q W M O z Poo CD ?- LIJ LLJ '"i. O l(-1 to CL .?. _ r Y LLJ E Q J y O W W F W L LL) Z ° Z ( p OZ ;r n F Cal Z O¢ O Z N N -? ry z¢ to O F ?_ z v w W ¢Z?O?-?Zma° ° ¢ a z o Wc?wa??ar`r? Ww1 Q zw = Fo Z= v N Lf) F- OF ° `- cn Z n¢° Z W¢ Z W O - a C (!7 -cn--Ca ?O =w°z oo-? o C W CL? w EU Z W F O z W U] ua -j z S F f!1 W F p U Z W Z E- O m? Z ° Z: ?, <L i ¢ m ¢ U .j rj? 0 s m ¢ F 0. O Z E,,, 3 Z N Z a Cl Cr] fsl LO a [+j C? U F H .?.? Z¢ U F o F ¢ z z Z?¢ o Z p u Z W - u O W=000 = F O W-O U F- W o n Z m N U E- U co cn Ca. CL U ¢ O F -? m -L 34 March,1992 ROCK SILT SCREEN: A 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 ft. maximum ( shall not be higher than 1 fr. above normal flow of stream) 37 March, 1991 -n. w _ ?-`• ?i? i 1,-y?•J O CL Y O O L I Z O?¢ ? -ri ?¢ r v O F n C. ?++ C C- Z < ¢ Ul C E i <,. Ca. U U ZTU O? Zn: ? W ¢, u] Cl)`ycn., p.?0 Z n ¢p`ZC,jLj C4. JC.CCs7 E-- = 14 F., i; cz F p Cl ?j:il' F C 'n O C,] > :. C C ¢Cn i F O- C. E- 0 LL, = FCn z azz <Cn QFC. Z ODU7U E-V C/)Cl1C+-C-U Cn r- ,. a ? N 3 x ? v O N O U W + f - : = N N U) b N 0 0 N 0 Z c e r 0' f W l..L_ Z? ?z U F= O z I Q .z _.tn: = x D ° w ? a n 3 8 March, 1992 • \?,` ?+,:. CO. ROAD NAME _.'_ S_R- W.O. eo . 961 z4! FROM ????,/ ar ?.-?'?C/VICfr?L. v ?•?? G??l ?yf: ADD ITION IMPROVEMENT TO BE PAVED P. POLES TO BE MOVED T. POLES TO EE MOVED R /W WIDTH SCALE 1•?n? i `G =50' 7F r17 7 i 3' FROSION COT',?4TTROL DETAILS A, IND SPECIFICA. TION"S Sty o .? .r• tin S 245.03 Tempcrary Silt Ditch 245.05 -- ? .................... ?o Temporary Diversion 893.01 .•,,.• Temporary Silt Fence 890.05 - , ........_.... Temporary*`Slope Drain with Earth-Berm ......... •-= . 245 02 Silt Basin Type A ................ ................. . . 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 Darn Type-8 ,:..... T - \ 897.01 Rock Pipe Inlet Protection Type--A ......... % 897.02 .. Rock Pipe Inlet Protection Type-8 •' 894.01 Rock Silt Screen 245.04 Stifling Basin .........................•---........._----... R k I l oc . n et Protection: 896.01 Type A .......................... _.._ A.. OR : A 896-02 Type B ............................... B ?! .. OR •- g 896.03 ;.. ??j. Type C ...............: ¢u=.. •- C 12 S March, 1992 ;"? . Railroad ... '........ .......... :,.,Control of Access Line-.'..... • • • • • . U . , Siope Stzlcc: )amine Culver.:....:.: .... ....... . 0 I.IG I. C2.1.0 Wcoas `I'elepliuIlt ar.''elc:?ral.?li Pole ......... il:.%fS';' -o- tt?itot' ••O- f Tower Pole and Line.... • • • • • ••• • -"?' ? tt:N ss-o S , 11'1t?t' .b Power Pole ......... • .......... • . ;'L' i1CLn1ei1? Line. ? •' __r? ?c? • • •. • • • • • s s s ' ? ' • t' T T .?....'.. . Guard Rail ..' ....:........... S44 nitary..Sewer.Line. ::.............. - Wutel- Line:. . . G a 5 GlIs Ling ......: .• ::.........:.. • PItU.t'C)5i:ll t::C1S't'iN G Chain Liiil: Fence''........... • --'-'u_ Woven Wire Fence': • • o •.• .. e • ...... , o-- ??. Re.oresz;ltlon ......... , .. ? s - ?--- Temporarv Si1t Ditch .'........ • ...... TSD Z'1::11D0I':ll'V 5110 1' C11C:L° Ter,ioorsl=y.SIopeDrain ........... Brush L?uri?'r ?•. • .. a ........ . - . Silt Check Dam 1?q)e A-.... . . ....... 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