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20000423 Ver 1_Complete File_20000330
State of North Carolina Department of Environment and Natural Resources Division of Water Quality James B. Hunt, Jr., Governor Bill Holman, Secretary Kerr T. Stevens, Director NC ENR NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES Apri 1 7. 2000 Haywood County DWQ Project # 000423 APPROVAL of 401 Water Quality Certification NC DOT c/o C.R. Styles, District Engineer PO Drawer 250 Bryson City, NC 28713 Dear, Sirs: You have our approval, in accordance with the attached conditions and those listed below, to impact 34 feet of Camp Branch in Haywood County for the purpose of road maintenance, as you described in your application received by the Division of Water Quality on March 30, 2000. After reviewing your application, we have decided that this action is covered by General Water Quality Certification Number 3103. This certification allows you to use Nationwide Permit Number 14 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. 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 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 below and those 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, 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 any questions, please telephone John Dorney at 919-733-9646. in ly, tevens Attachment cc: Corps of Engineers Asheville Field Office Asheville DWQ Regional Office File Copy Central Files 000423 Division of Water Quality • Non-Discharge Branch 1621 Mail Service Center, Raleigh, NC 27699-1621 Telephone 919-733-1786 FAX # 733-9959 An Equal Opportunity Affirmative Action Employer • 50% ecycled/ 10% post consumer paper httr:l/h'o.cnr.state.r,c.us/wet andc.html AL 2000 WFV nIIins Tart ,1^,I ITV ;f 'IHT1 STATE OF NORTH CAROLINA DEPARTMENT OF TRANSPORTATION JAMES B. HUNT JR. E. NORRIS TOLSON GOVERNOR SECRETARY March 22, 2000 Haywood County SR 1345 Mr. Steve Lund, NCDOT Coordinator PAYMENT , U. S. Army Corps of Engineers REC,E IVED Regulatory Branch 151 Patton Avenue, Room 143 0 0 0 4 2 3 Asheville, NC 28801-5006 Dear Mr. Lund: The North Carolina Department of Transportation is proposing to grade, drain, base and pave primarily along the existing roadway of SR 1345, Rogers Road in Haywood County. In order to construct this project in accordance with our current secondary road standards, and due to the extension of one (1) pipe culvert in Camp Branch (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 extension in Camp Branch, 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. P.O. Box 250, Bryson City, NC 28713 Phone (828) 488-2131 AL Mr. Steve Lund Page 2 March 22, 2000 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 Water Quality. In addition, I am asking Mr. Davis and Mr. Ed Ingle, Area Roadside Environmental Engineer (NCDOT), 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 tr ly, C7? ? t'f C. R. ty s, P. E. District ngineer CRS:sd atta. cc: Mr. F. D. Martin, P. E., Division Engineer Mr. E. L. Ingle, Area Roadside Environmental Engineer Mr. Mark Davis, Habitat Coordinator W. Mtn. Dist., NCWRC Mr. John Dorney, Water Quality Certification Unit, DWQ P.O. Box 250, Bryson City, NC 28713 Phone (828) 488-2131 A& DWQ ID: CORPS ACTION ID: NATIONWIDE PERMIT REQUESTED (PROVIDE NATIONWIDE PERMIT #) ' PRE-CONSTRUCTION NOTIFICATION APPLICATION FOR NATIONWIDE PERMITS THAT REQUIRE: 1. 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 PRINT. 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 Ci ty STATE: ZIP CODE: 28713 PROJECT LOCATION ADDRESS, INCLUDING SLj;DIVISION NAME (IF DIFFERENT FR R co ..-J 1 h l c+.?1 C ?n MAILING ADDRESS ABOVE): KO 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 LOCATION OF WORK (PROVIDE A MAP, PREFERABLY A COPY OF USGS TOPOGRAPHIC MAP OR AE2c, L PHOTOG PHY WITH SCALE): COUNTY: ' j ' NEAREST TOWN OR CITY: W c'? h 1/0 SPECIFIC LOCATION (INCLUDE ROAD NUMBERS, LANDMARKS, ECT.) IZ 13 LI R o i tr-5 k y n C? 1 r1 r' d 6. IMPACTED OR NEAREST STREAM/RIVER: ?c^.v?Uc P ??? ?L` S L 1 RIVER BASIN: I" r C?V? C ?'? F`Lrc? S r? (a) 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-II)? YES F] NO k IF YES, EXPLAIN: (b) IS THE PROJECT LOCATED WITHIN A NORTH CAROLINA DIVISION OF COASTAL MANAGEMENT AREA OF ENVIRONMENTAL CONCERN (AEC)? YES n NO 0( [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 ON THIS PROJECT? YES E] NO IF YES, PROVIDE ACTION I.D. NUMBER OF PREVIOUS PERMIT AND ANY ADDITIONAL INFORMATION (INCLUDE PHOTOCOPY OF 401 CERTIFICATION): (b) ARE ADDITIONAL PERMIT REQUESTS EXPECTED FOR THIS PROPERTY IN THE ' FUTURE? YES [] NO )? IF YES, DESCRIBE ANTICIPATED WORK: (a) ESTIMATED TOTAL NUMBERS OF ACRES IN TRACT OF LAND: 3 • y (q (b) ESTIMATED TOTAL NUMBER OF ACRES OF WETLANDS LOCATED ON PROJECT SITE: /` Jcg /y le- to. (a) NUMBER OF ACRES OF WETLANDS IMPACTED BY THE PROPOSED PROJECT BY: FILLING: EXCAVATION: FLOODING: OTHER : DRAINAGE : TOTAL ACRES TO BE IMPACTED: (b) (1) STREAM CHANNEL TO BE IMPACTED BY THE PROPOSED PROJECT (IF RELOCATED, PROVIDE DISTANCE BOTH BEFORE AND AFTER RELOCATION: LENGTH BEFORE: FT AFTER: WIDTH BEFORE (based on normal high water contours): WIDTH AFTER: AVERAGE DEPTH BEFORE: FT AFTER: FT FT FT FT AAR (b) (2) STREAM CHANNEL IMPACTS WILL RESULT FROM: (CHECK ALL THAT APPLY) OPEN CHANNEL RELOCATION: PLACEMENT OF PIPE IN CHANNEL: 13 -1 CHANNEL EXCAVATION: CONSTRUCTION OF A DAMNLOODING: 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 '/2" BY i I" DRAWINGS ONLY): To widen and pave SR 13q _b to meet current NCDOT Standards by use of track hoes, bulldozers dunp trucks, back hoes, manual labor, etc. 13. PURPOSE OF PROPOSED WORK: Same as above i n # 12 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 needed width to build SR 13LJ S" to NCDOT Standards. Al1-Channel changes will be constructed in the dry. RRip -rap will only be used for bank stabilization. Alders, Red Maples, Syc&ppres, tc. will be re-established on the banks. All pipe replacements will be placed slightly below the existing strearrbed gradient so natural 15. 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 PERMIT AREA THAT MAY BE AFFECTED BY THE PROPOSED PROJECT. DATE CONTACTED: Handled b Corp s. 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 b Corps. 17. DOES THE PROJECT INVOLVE AN EXPENDITURE OF PUBLIC FUNDS OT THE USE OF PUBLIC (STATE) LAND? YES ® NO ? (IF 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 ? NOX, (b) IF YES, HAS THE DOCUMENT BEEN REVIEWED THROUGH THE NORTH CAROLINA DEPARTMENT OF ADMINISTRATION STATE CLEARINGHOUSE YES ? NO ? N/A IF ANSWER 17b IS YES, THEN SUBMIT APPROPRIATE DOCUMENTATION FROM THE STATE CLEARINGHOUSE 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. 18. THE FOLLOWING ITEMS SHOULD BE INCLUDED WITH THIS APPLICATION IF PROPOSED ACTIVITY INVOLVES THE DISCHARGE OF EXCAVATED OF 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 STREAM (INTERMITTENT AND PERMANENT) ON THE PROPERTY MUST BE SHOWN ON THE MAP. MAP SCALES SHOULD BE 1 INCH EQUALS 50 FEET OF 1 INCH EQUALS 100 FEET OF THEIR EQUIVALENT. (b) IF AVAILABLE, REPRESENTATIVE PHOTOGRAPH OF WETLANDS TO BE IMPACTED BY PRODUCT. [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 kcadland, Ragidpnti;il (0 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: 1. 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 NORTH CAROLINA DIVISION OF COASTAL MANAGEMENT STATING THE PROPOSED ACTIVITY IS CONSISTENT WITH THE NORTH CAROLINA COASTAL MANAGEMENT PROGRAM. LSO OWNER'S/AGE T' IGNATURE DATE (AGENT'S SIGNATURE VALID ONLY IF AUTHORIZATION LETTER FROM Alk M Li l y•`• O ?? D `C • \ v Y / SNO`w?BIRO? ..I? J .•` '-'1 / a do N f h M 9' U I N T ?' I N 5 I ra= / I v i I• ROUGH KNO \\ \ 1 HARMON 1'1 DEN WILDLIFE `' ?•` >•o Q PUG KNOB •y MANAGEMENT 1 7 °q dA HATNE$ KNOB ??. - ?' ` ?? 1• . ? ,. 179 \\ o?/' ? BUZZARD R005T?' © C \ AREA , - • /' rC, TO HOT SPPINCS 5 a PISGAH?t?I?.._ / ' •'I M/H?.. ? ` j_ ', •r ? % ^ eE TSErS CAP 1'•. t S 7 L \J+'?/_l r I Imo ?' ELEV. 5.835.i 1 /' ?• ?.p C J"1? rfr.e] Creek •;?_' 6 ? HEBD MTN. ' I No, I_v? p Imo, r R »n In Ix7.?, ?•_ \ aJ / `• ? ? NATIONAL ?p 9 y In- o-4 'v N 7 .s °' '»n J'- _ I R GRASSY.' KNOB ? CRaBTREE BALD If 0 I9 ELEV. 5.680 41 / I WATERWILE ;e 17,.3 `•\ ?•?? Lz \ _ s LAKE a , r OAK MrN' 2.7 .1 3m, ?? _ . fad • _ 1 (. • I 17. ..?\ v Fi --' sae at? _ a t rol \ N. c? h'.: et z I 16;4 J d' ?? C / Ip9 /i?1»3 6 ? ? ./- 9? 1-0 I I503 ./ "oaf CANADIAN TOP ?,,,•._ •` FOREST '?" ' • t ELEV. 4.118 1 ot COVE CREEK GAP $EAY ?'. N T A '.I N ELEV. 4,062 MTN• 1 1 ?' 1 ?.•r} ?' A+.. 1 I yaI 1 G CHAVBERS =3 ?' O N A L I 1.1' 1 / HIGH TOP / \. 3/ J PURCHASE KNOB ^, •1 ' J \ / 3,9 170 / ?? ? ? •I/ 1.1 P i A R K 7PS UTAH MTN. a??' /. \ ? 1319 0 ? ,S .6 ?>' / - /• \ / 3,5 1\ :ATAL000HEE BALSAM / \ Idly 1714 •/ r ^?y Va. LITTLE :BALD KNOB I LEATHER#OOD MTN, 3 I- sT r r ELEVJ5.611 ?y \ ra 27,6 23 ,• •' z1 .D' ^JrKI. \ y s-d IJ )`. ??) \?) \ 1? ?? `?? 1 SEN'ELL 1 ' ,^--t,; 49 4- 11 (JI ? ,? vi„/^ , •. - L' k 227 J?? (? ?' \\ , , ter. _ ?N, ?•- i t ,?.?-= . /?? c CL?? o ? rr ? tl `? ? ?'. h. ??? •. ; ? X01 ? ?:; --- ?? 1 e. .1 110- •'-? . ? !-? ? may, `...y }`? ?; ? ?:. ..` , San ? ?. •, ? ? ? `_? ?? ? \ ?t ? , % ( r- •? ; -?,\ NbiCe Oa `-,. c'B ..L1-t?'? c ?? -`~• \I° `a t -? ~ OFRM `?tY Ge to ?7? cr ?,-i1 S•77 `"?:j? 'JA ROAD NAME o S_R_ W.0 FROM -74 - To ?%?? c??" Vzwl;v . ADDITION IMPROVEMENT TO BE PAVED P. POLES TO BE MOVED T. POLES TO QE MOVED R /W WIDTH SCALE .DATA G -/O -99 ?Av w oo d CO. a I" =50" 3' Railroad.. C :..Control of .access Liiie ................. A •• Slope St:alce Dine'' .:. .. ... - t= ridbe. Culvert=..':'. •: :.. •..:.... ....... + 0 JO -I, C)+O or ,. , ...; '''elep.liont or,'1'ele, rapli Folc ......... ?I:Nt -S 't' -a- I ?t?itot? •O- l ..Tower Pole and Line... . • • • •.• • • , • . -" ? Power Pole .':•. :. .. :. , II:1I5'a I ?I'ttnt' .b Easeniell' Line..:,::.... :..........:..' i4to%vitl,; 1_iniit' ....... . Guard Rail ..' ....:................'... . t T Sanitary-.Sewer-Line....:.........; ----=; - ---- Water Lint : '.'..' ...'•.... ' .:............---t .? ' t---• • Gas •-o--- Gas Line .•......'..:.':...' .......:...: . • ? • • ?•t?ttc.?t`usr•:u r:xts•t•tNc ................... -t+s=--?-- -L ?- Chain Lhil: Fence** Woven Wire Fence" .. , ............... -??--?--•,h? ?- - Reclcncradon...... :.... . .......... • tom, _ ?? . . Reforest;ttt.on ..:.:........•.:......::: . L. Temporary Silt Ditch :..........:.... ry Silt 1?aii ce Te npo ru .............: --+h------0'1 T----? 1 ?- •Tenipol-ary.Slope -Dram .. ...:...:...... _. `Brush L,lrrier:.°..::?:.•. .' .:............:. Silt Check Dani Type A•.••::.........?..'. n Silt Checl< Dam Type II ..'........ o .... Silt Basin Z?•p e 'A' ...:.:'... 1. 0.0 0 9 0 g ..' --r- ° Si1c Basiri T31)e B?.'.?.....'.?..:'.:....... ' Roclc Silt Checlc Dam. . ...........:. . .. - ?' ? •" ??= l";it:l 1 Dcrm-.......... •.:....•......... . Temp .• S lone Dilch Check .........:? JIIIIIng no"lit Co. ??y?c/?.?v Ev?.eY s?d,e?» E'vE/?/r i?.v-? ' G?LE,?/V61> vur. ?vs???? /S;9L.f fir 3 ?. \I _ /Vd 7- Td S G/1 L E .r'//..7' l.3il:?/??' - / 1?,i?G7,S? vl' .7?/s?iiPUr?? ARF_A EVC,7W Ole -Uis7'4,Wl3Ev AC65/1 c jjSC, ONLY L?:v?r// aF v?s7'a.eeED /1REA l E'N67iU Df -7)IS7'11X8Ey /VS-d - 1 JA ?r?? ?'rOO Mp x?s_i??-.?G I T ,eNe? /7/0 Ce? 2d, ?J ?I -tA 70 U x`50 ? I ? 5 .tic//wno n ?.: W,qy?? sy? //c- //C I I- I o ,goo O 0 /0 X00 I it fi i i ?. 4 Soo I lo v 00 alc"1n/ G .x/?i?l,?i? SzG 0 0 5-100 I P v. c3vy 3= S ? NC O - I I ?.? 3. sN ?P?s 1FAyM011 'PX-'?y cr-I X03 2:04cwx/ red. 0 ! v o 1-1 1 v /0 't2 S 16 COQ /0 ?4 00 O /2L v zp X00 I 6? .u?N ??:ss•a,v ,?d. ? eiyCle-, AIC cr- 0 & Z) /7 ADD /?Ju /`iuR :?r.' ,/_ 4,e.-<O Al 00 ' Frwc l z >,e . v v" O 0 t r /D ,25fD0? _ 25 X00 IQ - ? ?I Zr .5vv .X./di9N 3?oe,:vGs ? ?x•?f ;?G 2/ .EGG U ?n ,? nn l Z? -"10 /o / McAc? ??//e, 11(f 12 ? cI 1 -1 v - 10 ,gyp ,t 00 30 SOD v , I 30 /° Y.s ?6 I z8 ? 90 ,2(? X35 .v ,25 'I oo z? 01 ,2500 X06;? ??E??>o?d S /ftONitfOU?? CT, G,eeevsG ,eon Ne ?????1? 0 .3370 337,70 ? x ? S i,vG ? 3 f OO Z1 I II cr-I v - i I 18 MP ? ? q- , I I i ????nl I3o {oo EARTH EMBANKMENT S I LT FENCE FIBERGLASS ROOTING RI P RAP +- EGE J 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 CRrMRIA: 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 a I I- ci . ri i_ . Q• I f CO 1 jll p 'IF, E z z tr ° W LLB ?- I WE- U -- - j I I- W z LLJ i.. L1 < 11 ru?6 Q ?? 4Q. W Iri 25 C4 < <E X .C C4 - E- CL 1? j_ v?Z Q ° - U - ° ?- O _j -3 CD C.. Z-? r W i_ co E- N .c W 1 .i C W z - E ?- co 0 ¢ ©W -w Qr C `ZWWz .c W ,,pyUCZ Q C7 e ( E- ZWW E' Cz C4 W (n UZ=Wa0a. I -.. CI) _ ,?• U)? ©pC CFWE U314 i .a. W -?Z °?G E- W ?2'O ?¢ ¢¢? Ld¢°ppW IOw O - CL <Z W c X. FU N-Z CzCpi7 p¢(n 00 E--UU7 W-3 Z.?Z• cm V) i- - C4 co C4 U CLI W W-?CDU-n FWE- U -•?:p' Z© 0? CLC WCc.¢CNWZ E ¢_7 Z -00 OCa.p =Q E- U1 i :O Z• a 18 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 alto fIQ N " - , a ). ? , III; ? i `)M.1 ) ,) `` ) ' I i II W 1 a I ?b OW, ;?? ?1? I r ?' IIIIIIi !- ? ) Y ) , II - - :r III lljl: z E J I - Q y.. __ .o •.z V) .f. . J ) ) 'r? ? ' IIII _ ?- J Z w Z-? ?IT'i ly ? 111 I u LLJ O C'1. •? •i 1)J = •? ? ,;,ink' ''' li ? _ - .G O ' f ' ? IIIII' LO V A ,.. VA h -)l) ,).) an III' m - Z'" o 70 - I 93 E • Z' 24 March,1992 ? ROCK PIPE INLET PROTECTION TYPE-A: 0 0 0. o 0 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 Z.© o airy f Cc Ir V Q J X I x w w W a z , a a- d 3 a a ?- w ? r i ch O 'z. LO Ld ID F- tea .,`y`t ?yL '\=" '' ;'.•'' ?.,^'?' ? 1 ? .•ryri:..? ? ? ? ?^ F7, ;?S.ja:. ,,?; G `i ?''=: ^"?,jj1l.. ?•- SA;i ?? •tJi `r?, u CL O L.Li CL 0( a) -Z i r,."..C _ 'r ^'w.. -. Ki ,,f.. •.! t. 7? w f 1 L ?•. .. 2.1 0 -0;7 . c: a;?y:•.Z Yam'. LLJ 07 Z ' !c1 tt? U z U s LLI .a w W F w w o In .4 Z - o z ul O S E-W Z p? Q=Z T } N NO to a E- . O F E1. W .. m En Cw7 w <r- C4 ¢¢ C4 U'O Z C4 U 0 p ¢ u Z U W p W¢ W 1 N Es7 0 m Z OwOEZw©?W 3 EW-N W[Uri1E. O to Z G. 4 W F O .7 Z W J V N W ?L]FOcr)00 ¢OZrai ¢Z W p F- ? En " V) ... U z ? a ? o .O' 6 ¢ Z ¢ U O N O C W O w z LO c. CL W -? E- Z W F Z w w J S r.,=c U p _ 0 " ti _ - CL F fn W E- O W W Z E- En N© cco z O ZOi ?•,o; U N C] U E•• 7 w¢ 4 ..7 Z¢ U w 1. Z, N ..:: p¢ ¢ (n O 't F O W F 3 Z Q ? . W .] .] C W p ] W¢ W C 0. W E.- F E,] -3 O F= W W I N E Fy ¢ZZZCn ¢O?-.ZGUT Co , O WS000 FO O UE•-S ?. Z wEnUFU coEOr-a.U < ! 'w P, ' O Z. 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 ft. above normal flow of stream) 37 March, 1992 .-n _l 2 W V) > O Q C . i a 4 O -] W W F _ Z Z CZF .e C) Z En z F [L O to o. W C F. W W U E 4. 2¢ 6 W O N Z p O = Z N: = V= O ©¢ W W, c __a E- 0 ?ipFO 2?n¢OZCOC4 v 0 O aCZW UOV)UFOZpOZ C[+.. V a.0 W F-z w F.?ZW E_. 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