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19980551 Ver 1_Complete File_19980617
State of North Carolina Department of Environment and Natural Resources Division of Water Quality James B. Hunt, Jr., Governor Wayne McDevitt, Secretary A. Preston Howard, Jr., P.E., Director FTWA A 0001% wow% NCDENR NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES June 24, 1998 Haywood County DWQ Project 980551 APPROVAL of 401 Water Quality Certification 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, to impact less than 0.01 acres of wetlands or waters for the purpose of paving SR 1269 in Haywood County, as you described in your application dated June 17, 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. 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. 276 1 1-7447. 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 Dorney at 919-733-1786. Sincer est PowYard,. .E. Attachment cc: Wilmington District Corps of Engineers Corps of Engineers Asheville Field Office Asheville DWQ Regional Office Mr. John Dorney Central Files 980551.1tr 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 M STATE OF NORTH r. DEPARTMENT OF TRANSPORTATION JAMES B. HUNT JR. GOVERNOR June 11, 1998 Haywood County SR 1269 Mr. Bob Johnson 215 Army Corps of Engineer Reg. Field Office Room 75, Grove Park Ave. Asheville, NC 28801-2714 Dear Mr. Johnson: 9 805 5 1 i LI W E. NOMS TOLSON SECRETARY The North Carolina Department of Transportation is proposing to grade, drain, base and pave primarily along the existing roadway of SR 1269, Saunook Drive in Haywood County. In order to construct this project in accordance with our current secondary road standards and due to the replacement of one (1) pipe culvert in an unnamed tributary of Richland Creek (DEM Class B), 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 replacement in the unnamed tributary of Richland Creek, general notes and standards on erosion control measures, and a marked County Map are enclosed. We propose to install the new culvert slightly below the existing stream bed elevation where 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 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. Mr. Bob Johnson P.O. Box 250, Bryson City, NC 28713 Phone (828) 488-2131 Page 2 June 11, 1998 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. 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 consideration will be appreciated. Yours truly, ;;Y' C. R. Stylesi;'P. E. District Engineer 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 P.O. Box 250, Bryson City, NC 28713 Phone (828) 488-2131 OEM ID: CORPS ACTION ID: NATIONWIDE PERMIT REQUESTED (PROVIDE NATIONWIDE PERMIT q) PRE-CONSTRUCTION NOTIFICATION APPLICATION FOR NATIONWIDE PERMITS THAT REQUIRE: 1) NOTIFICATION TO THE CORPS OF ENGINEERS 2) APPLICATION FOR SECTION 401 CERTIFICATION 3) COORDINATION WITS 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 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 ZIP CODE: 28713 PROJECT LOCATION ADDRESS, INCLUDING SUBDIVISION NAME (IF DIFFERENT FROM MAILING ADDRESS ABOVE) : S IP 12 K q : -5 ek unock D r; y - 3. TELEPHONE NUMBER (HOME): (WORK) : (828) 488-2131 4. IF APPLICABLE: AGENT'S NAME OR RESPONSIBLE CORPORATE OFFICIAL, ADDRESS, PHONE NUMBER: SAME AS ABOVE #l 5. LOCATION OF WORK (PROVIDE A MAP, PREFERABLY A COPY OF USGS TOPOGRAPHIC MAP OR AERIAL PHOTOGRAPHY WITH SCALE): COUNTY: 41AYWOn C> NEAREST TOWN OR CITY: WA YWC_SV/ 4 SUBDIVISION NAME: N/A STATE: NC 1 W W W 0 a J `^ C, w z e. tr W tb .•. W W - I ? }• r N O?n Ter F W W m N .r N N tY W i 0 O X - O WtnmUO I tY 6. m ; 0 U ?.4 lF7?'•?(D(3 to ? J (- to 0 1-I W F S?a.S f.C WI ?n C MI w D F4 U z W ?i m Pi w U N a 0a? a t7 a e W W W M n W w - W i1 J W ? w Wes: i? J n W J' U W to - _ •r o h F- - 4 W W V L W a W C N Q Q rl • w rt o• w ? U vl- 4 F o % n J 0c I ? tn W W N Z r a xL; - N C7 U v O 0 G Oxo,? 0 u GO P y W •.. - cr rn M _ m L. J W t/1 W O - 1. ` W cr !) w . W > -_ T O or U. - of .t w0U2? W -O r - r W= hr --001-v _ N Ul - > vl a 7- U W 0 W 4I 4 t , cn a h i O (- ct h C •C C tt F U - W F W J w W W W 0 ¢ 4 - w W O - 4 O r O N tn F V h W t0 t' r? 'C ,O w f W T m U r W - iCSF + ? N U.± . r W r J t C W W cc ' to tY W rt F- 0 0 W.- u1 n m w•C ?-'? 4 ae•.r ac ccn J t.. ^• a. Wp? cr. r cc W W 1' r is O ?L O r- r :• W - .7 rl t? V W rv -- tn ! 1 to N (?• ,•, .. W O F Q W 2 y. W tJ F ¢ F W ca ui (n o- ,.t = F 9 - _ ' - W 1 'n W •• 7 ?• O o? 5=1,1C W - - a U - W t" - " - aG 1 W cr O bsia- O W W a. Pl • W ..: w F F W W F F W --• W W to J t I M. J J Q :` 2 W cr rr J J C ' r+ F I' Q W F O '>• Q W w u tr W O W J to W ? r W ?•?• W W m C'I C:M I 2= ': D n W t r N t7• -_ W t:7 0'd t.I o, W rn m ct a e• O W O F W In W 0 O ftu a - - C h - VI w Vl - .rtn 0 ?Cw s'. C o. h W fl W O n c?vl? cr » 'o W W f r -r i + (7 cr I 2 7 .-. O W . co F wa)rv qW_N O W lavl> Uc W CL. Q - r cc z wUO;w %-FJO r c? a ` a. W 4 _ W w J 'n ul m 2 v? W W t.l W O W 0tnO cr (x O W J W 'J W ? VI W I? W I 'V W ul r 0 W_ m N a to W .. C60 1;1 ac 'Of., _- WOtn ac U J L.4 J t.1 . r `' .F. '.•'• q? a W K N J W W J r!n J. vi dh d ,o SPECIFIC LOCATION (INCLUDE ROAD NUMBERS, LANDMARKS, ETC . ) S 2 12 6 9 . SA 4/x/00 & OR Ivc- /-"'j 6. IMPACTED OR NEAREST STREAM/RIVER: AA/ UA//VAm ` TRJBU TARV Q-F DES ? CQb7k 1S? RIVER BASIN: ?iQE/J?. N .BROAn lC,y?``IZ BAS1N 7a. IS PROJECT LOCATED NEAR WATER CLASSIFIED AS TROUT, TIDAL SALTWATER (SA), HIGH QUALITY WATERS (HQW), OUTSTANDING RESOURCE MATERS (ORW), WATER SUPPLY (WS-7 OR WS-II)' YES ( j NO (14 IF YES, EXPLAIN: 7b. IS THE PROJECT LOCATED WITHIN A NORTH CAROLINA DIVISION OF COASTAL MANAGEMENT AREA OF ENVIRONMENTAL CONCERN (AEC)? YES ( j NO (X] 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 8a. HAVE ANY SECTION 404 PERMITS BEEN PREVIOUSLY REQUESTED FOR USE ON THIS PROPERTY? YES ( j NO (Xj IF YES, PROVIDE ACTION I.D. NUMBER OF PREVIOUS PERMIT AND ANY ADDITIONAL INFORMATION (INCLUDE PHOTOCOPY OF 401 CERTIFICATION) : 8b. ARE ADDITIONAL PERMIT REQUESTS EXPECTED FOR THIS PROPERTY IN THE FUTURE? YES [ ] NO ?j IF YES, DESCRIBE ANTICIPATED WORK: L/ 7 9a. ESTIMATED TOTAL NUMBER OF ACRES IN TRACT OF LAND: ,3. T 9b. ESTIMATED TOTAL NUMBER OF ACRES OF WETLANDS LOCATED ON PROJECT SITE: 0.0002 2 10a. NUMBER OF ACRES OF WETLANDS IMPACTED BY THE PROPOSED PROJECT BY: FILLING: 0. 000 2 EXCAVATION FLOODING: OTHER: DRAINAGE: TOTAL ACRES TO BE IMPACTED: O,D00 2 10b. (1) STREAM CHANNEL TO BE IMPACTED BY THE PROPOSED PROJECT (IF RELOCATED, PROVIDE DISTANCE BOTH BEFORE AND AFTER RELOCATION) LENGTH BEFORE: N A FT AFTER: N/A FT WIDTH BEFORE (based on normal high water contours): ?1 3 FT WIDTH AFTER: n AVERAGE DEPTH BEFORE: A// FT AFTER: Fm (2) STREAM CHANNEL IMPACTS WILL RESULT FROM: (GREG{ ALL THAT AP/PLY) OPEN CHANNEL RELOCATION: PLACEMENT OF PIPE IN CHANNEL: ' L7 L F CHANNEL EXCAVATION: 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. DESCRIPT,CN OF PROPOSED WORK INCLUDING DISCUSSION OF TYPE OF MECHANICAL EQUIPMENT TO BE USED (ATTACH PLANS: 8 1/2" X 11" DRAWINGS ONLY) : TD WIDEN nNn PAVE SR / 2 (, 9 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 ST BE CARRIED IS BELIEVED THAT THIS ACTIVITY WETLAND 14. STATE REASONS (INCLUDE ANY MEASURES TAKEN TO ?MINIMIZD OUT IN WETLANDS. IMPACTS). RIP-RAP WILL ONLY BE USED FOR CHANNEL CHANGES WILL BE CONSTRUCTED IN THE DRY' RIP , WILLOWS, SYCAMORES, DOGWOODS, ALDERS, RED MAPLES, BLACK W BANK STABILIZATION. ALL PIPE REPLACEMENTS WILL BE PLACED ETC. WILL BE RE-ESTABLISHED ON THE BANKS. ADIENT SO NATURAL SUBSTRATE (USEWS) CAN BE RE-ESTABLISHED. SLIGHTLY BELOW THE EXISTING STREAMBED GR FISH AND WILDLIFE SERVICE THE U•S• NMFS) (SEE AGENCY REQUIRED TO CONTACT rES SERVICE ( SEE A ' OR 15. YOU ARE REQ jipRINE FISHER_ Y FEDERALLY HABITAT AND/OR NATIONAL THE PRESENCE OF AN OR CRITICAL cNED SPECIES ADDRESSES SHEET) EN REGARDING DANGERED OR THREA1J PROPOSED PROJECT. DATE PROPOSED FOR LISTING Y BE AFFECTED BY THE (ATTACH RESPONSES IN THE PELED EA T BY HCORP HAND ?' R CONTACTED: OFFICER THESE AGENCIES.) c HISTORIC PRESERVATION S "AT . OF HISTORIC UIRED Tp CONTACT SHEET) THE REGARDING THE PRESENCE THE PROPOSED 16. YOU ARE REQ 1 (SHPO) (SEE AGENCY ADDRTS?REA WHICH MAY BE AFFECTED BY pROPERTIEDATIN THE E coNTACTED: HANDLED BY CORPS PROJECT. AN EX?ENDITURE OF PUBLIC FUNDS OR THE USE OF 17, oOES-THE PROJECT INVOLVE PUBLIC (STTHE ATE) PROJECT LAND? GO TO i8 ) ?j NO [] (I= N0, OF AN ENVIRONMENTAL YES DOES THE PROJECT REQUIRE HE NO p,TIO IF YES, REMENTS OF THE NORTH CAROLINA ENVIRONMENTAL a. DOCUMENT PURSUANT To THE REQU POLICY ACT? YES [ ] NO BEEN REVIEWED THROUGH THE NORTH CAROLIN b. IF YES, HAS THE DOCUMENT CLgARINGriOUSE. DEPARTMENT OF ADMINISTRATION STATE YES [] NO [) N/A DOCUMENTATION FROM THE THEN SUBMIT AP°ROPRZATE MANAGEMENT REGARDING 7b IS YES, ENNIRONMENTRL IF ANSWER TO 1 DIVISION OF ,?IRONMENTAL POLICY ACT. STATE CLEARINGHOUSE TO BE COMPLIANCE WITH THE NORTH CAROLINA R NGHOUSE REVIEW PROCESESHNORTH DIRECTOR STATE CLEARINGH RA STATE GETT,CLEA_ON, 116 WEST JONES STREET, QUESTION S O MS. CHRYS H BAG CAROLINA DLEIGH, DIRECTED DEPARTMENT OF ADMINISTRA 919) 733-6369. NORTH CAROLINA 27603-6003, TELEPHONE ( 4 18. THE FOLLOWING PROPOSED ACTIVITY ITEMS SHOULD BE INTO WETLAN DS: ISCHARGZ INVOLVES THE D INCLUDED WITH OF THIS APPLICATION IF a• TAi EXCAVATED OR FILL MATERIAL AND PONDS WETLAND DELINEATION MAP S 29, AND 38)). . L PROPERTY ROWING NATIONWIDEALL WETLANDS "'=ST_ BE SHOWN ON STREAMS (INTERMITTENT AND STREAMS THE: . PERMIT NUMBERS ' LAKES INCH E AZS F AVAILABLE FEET R pTHE R PEQUALES SHOULD PERMAN NT) ON 1THE 1P8, 21 . ROPE , 2 6' IMPACTED By RTEPR HEIR NTATIVLENT, BE I NCH EQUALS 50 RTY PROJECT. PHOTOGRAPH FEET OR 1 C. IF DELINEATION WAS OF SHEETS RELEVANT WETLANDS TO Be TO THE PLACEMENT d. ATTACH By LACEMENT O A CONSULTANT e. WHAT IS LAND COPY OF THE S F THE DELINEATION INCLUDE ALL DATA LAND USE OF SURROUNDING RANAGEMENT PLAN. RPROPERTY? RURAL WpppQANp ED. f' IF APPLICABLE, WHAT IS PROPOS ED METHOD OF SEWAGE DISPOSAL? NIA g' SIGNED AND DATED AGENT AUTHORIZATION LETTER, IF APPLICABLE. E TI-ANDS OR WATERS OF THE U. S. 1) ISSUANCE OF MOTE: 2) E ITHER A SECTION 404 MAY NOT BE ZNVIRONMENT THE CORPS OF ENGINEERS IMPACTED PRIOR TO: 3 ) (IN MANAGEI?gISSUANCE NT OR WAIVER OF A 401 PERMIT, I+ (WATER QUALITY DIVISION OF NORTH CAROLIIV TWENTY CC7ASTAL ) CERTIFICATION ACTIVITY A DIVISION OF CDUT7TIES ONL AND PROGRAMIS CONSISTENT COASTAL MANAGEMET A LETTER WITH THE NORTH STATING THE - CAROLINA THE CAROLINA COAST PROPOSED MANAGEMENT OWNER E TES SIGNATURE (AGENT'S IF SIGNATURE VALID ONLY THE OWNER IS LETTER FROM PROVIDED (18g.) ) DATE r 5 C Lc•?rt?1Ln? ?? ir?l? af +y?ti?/,? YL m \ '159 I. 1"57 s a hAYIV r 00 0 w4 I - I 289 1 j? \ I J? j ??Jll E I 1 C I _OU/yry COUN1y I BALSAM GAP I i \ .a Oi II` r 1 « Falrviear l:n C L o t t n? n T 1 1 ?` r \ .-- _ -?? LA_ creek 64 Park a ??- X700 ?4 ` ,'• ' -- - =-?V - taln ` .? tt59) / ? ? - J?O' ?. \? o '_J - - °/- ?'•?J? L-.^??''? E ?U per' l ° 30 ' 4 r? " - Trader _ °' `•.. ?I ?r..Ricuh.4an By 332 - = n?o l Balsam Ch t? ice- - ` - ---------- - ?°w Saunook .µ aM 1 - ?,?'' 1 s Cj Pin F 8 206 ! If! 11531 REDSA MK - 00 •? I CO. ROAD NAME S. R. /z6? FROM ADDITION lMP(70VEMENT TO BE PAVED P. POLES TO BE MOVED T. POLES TO BE MOVED i R 1W WIDTH -;Zo SCA!_E I" = SO 9' 3' FI.ail,road . ......Control of Access Line.'.......... , :. A Slope Stake Dine . ...:............ . -- , •B rid d e.. .; ?': ..... . -•- :. tiVooits :. ' ... .. 0 Jcj•1•0+•t:7 c3r .. Tcleplw(Ie or,TeIu'grupIi foie ......... T Tower Pole and Line... .. • •.• • • • . -" Power Pole .:: :? ...... . ........... . F.,.% AS S + witt7t' b + Eas'enic n Line. .....'. , , ........: llyfowit> Lin+ic' .... Guard Rail ................ , ,- Sanitary.Sp.wer•Line.: :......... . .. -~--=? -}•-55 Water Line..". '....'.'....'... --;1? - I- Gas Lin(:.'.. ' ...........:..... ' ?`'S -°-" '' I'ilC?l'U51:U t:XIS'I'ING Chaim Liiil: Fence ................... -?-?- - -u- Woven Wire hence•:.... , .. , ..... Re .c.n(2 r a c i o I i ............., ........... ??. ?. •esC:lCion ' ............. . . . ... ?'- / Rcf?t • • ?, ?. Ternporurv Silt Ditch .'............... Te m p o r ,l rv S U 1: lr e +i c, c.° . . . ...... i- Teniporary.Slope Draitl .:...... .... . S Brush L?lrrI(!r .'. .'....... ...... . ES7-- - `1 - Silt Check D a n i Type A .:............'. n ' Silt Check Dam Type .B .......... • .. • • . Silt Basin Z'?.pe'A• ...:.:'. .......: .' --?. • Si1c Basin Type B ........•........... . Roclc SHE CliecIc Darn .... .............. 1~ a r L 11 I3 c t n1 .. . ':: -C. d-, -0- • -o .. I emp, S lone Dilch Check . ..... , ; ?? +y?c/??v EVE.ey 14, LU/4'? ?? yi9LF F// _,vd r 7TJ s (f /14 E L,r,+?G7y o?' MisrriPQr 4RFA /" ENG7;5/ of .z)1s7'1,WI3Ey AfEA 1 ° Im" SROs/ON ?/ - oe ONLY a,. »?rra.eeED /AREA 3 S r o.E ?» E' t/E?/ r /?N-I? • G? L E/JJV61? v ?? T s B, 2 ;• /? ; - f:,-:'_si,v - % l_ E/vG?;U or »is??rfBEv AR?'A yl (S.fi.Zf3J 1 I G f %/I ?a- IeMP P Cr/s A167 G C"t.r r 7 ) /'? 0! I /U ++uu 6 0r l8 M C P RS Pk o s F v P- ? P,eopc cd ? ? a? 6 0 cr i o0 00 /$ f00I l le?f?0 I l O o s. 0 ? 1 - V G?/ CY I a 60 ? 104-0(-) 16,400 ,ZO?OCI l b b v 6 v 19 v 20+0?% I al I Q i al 6 0' ? /5100 zs?-oo 12,51-00 6 0` c I? Pp o 0-1 I® d b I If ?8 Mp E x ?s , ? I a 6 0? ? 2 01ov 2,.o =oo . o. P I 549 zs ?o 6 0' Ia I IS ?2 _S?9o 25-00 TEMP ST.NE DITCH CHECK f ROCK SILT CHECK D3 SILT BASIY - B TEMP SLOPE DRAIN TEMP SILT DITCH -TSD- EARTH EMBANKMENT SILT FED' CE FIBERGLASS ROVING ±- EGR RI P RAP ;?r 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 I II AS • ? ?_t i '-r Q• j;-- co I © U _ Itl_ w _ ?- ---- o off, W z Ew-. w I I ? -C C4 _ i1 wr C7 U C? G ¢ i IC s (!1 ( I I I C- Cn C4 C > z :t C-1 mil!] _-`? } V / C C4 LLJ E- CZ LZ Q - .J Z. - GQ i . Ca. Q _ u] ul G CL Q W. FM -? za 18 March, 1992 SILT BASIN TAE-B: 777 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, 199? N •?r • m C ;LO • ??N a NEE LLI aN^-J •• IfIII -_ ?.'.?,r?,`. 2 .1) i• ): a / _ 1, r. ? 0 L (n q`? ' y W - 6 W - Z. m 7 r,• _ ? 1? • Z' 24 March, 1992 ROCK PIPE INLET PROTECTION TYPE-A: a6 a,? a - 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 lamer 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 1#5 or 1#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 re`ular basis. DESIGN CRITERIA: • Structural stone - class-B stone • Sediment control stone -1#5 or 1#57 stone • Sediment storage area - 1800 cubic ft./acre • Dam height - 3 ft. minimum 33 March, 1992 ,.m o m ;.. cr Q x U. Q - 1 ,..1 w I ¢ ,, w W a .. , CL CL CL CWL w a, ' r _ log > z >?1 O o U ..? LLI y Q i r Z ?OQ c co W cc 1^-ti Q W W = _ w W - w C a 0 C r p ` w Q M C4 W C C? O O© 6 W ? G C Z cn CO ¢zc`'¢?o??c V ?..cn a w c` U7 F cn W F p U W Z E. C U? O p p LL O y C, ?. ¢ ¢ O FGO W F N "' to^.2 C p W¢ W W S W ?.-t- O w Co cj C4 C4 F co ¢ ¢ C ?' _ C U = O W- 0 0 G F O U F- © cn U F U m m ?+ U ¢ O F w n v- .Z 34 March,1992 ROCK SILT SCREEN: A 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 n57 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 - T 5 or # 57 stone • Dam height - 1.5 fr. minimum and 3 ) ft. maximum ( shall not be higher than 1 fr. above normal flow of stream) 37 March, 1992 r- ? W w o CC ?Y a 4 O O ?a] c _ `¢ ¢ CO _ --CC`s CC C? ??¢ ¢ a¢ U ? j' ? ?e-O OLD G]E-- p U3? C O ¢in ? F- C- O C 's:0-00;, OCO -Ca. rye ?.. = U W U F U fn Y D O O C w 1- LLI - ? Nlt ? O U ? N 7 N 'l. W U r? U -_ O Z-7 C " r? V Z: - C: a w E 9 3 8 March,1992 Z s ?d4t OF ??y, e o F O? aCv1 -r, L "C- 7rtl,1fvUUK URtivG SR- 1264 f-?A,? W o 0Q COu?J i Temp SL-r Fe?G? ? ^ \f? RoGK SIU ? Sczee? RR0P Exrc,JD Otx ceT En/D W14' OF 307c lP T ea,j„j io F7A I r r ' ? ^I t 0 I 1 [. J •r I , ? I I I I i ? ( I i I I 1 ? I I I I I 1 I I I , I ? _ I I I I I I I? I i i i i. - I I , I • I? I I ! I I I I ? ? - I I I I? I I 3Y??