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HomeMy WebLinkAbout20010457 Ver 1_Complete File_20010328O?O? W A T ?RQG 4 "C DWQ Project No.: 01O4S7 County: : ?/AJ/ Applicant: 144LVTT Project Name: SC 11-91"A , Jazma AiCW Date of Issuance of 401 Water Quality Certification: &5 Z o Certificate of Completion Upon completion of all work approved within the 401 Water Quality Certification or applicable Buffer Rules, and any subsequent modifications, the applicant is required to return this certificate to the 401/Wetlands Unit, North Carolina Division of Water Quality, 1650 Mail Service Center, Raleigh, NC, 27699-1650. This form may be returned to DWQ by the applicant, the applicant's authorized agent, or the project engineer. It is not necessary to send certificates from all of these. Appl??i,c,,aa5?t's Certification I, P;gz .C 6/M5 , hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the ap r ved la s an specif • s, and other sup tin m erials. Signature: .Zte: L / 4 Agent's Certification I, , hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved plans and specifications, and other supporting materials. Signature: Date: If this project was designed by a Certified Professional I, , as a duly registered Professional (i.e., Engineer, Landscape Architect, Surveyor, etc.) in the State of North Carolina, having been authorized to observe (periodically, weekly, full time) the construction of the project, for the Permitee hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved plans and specifications, and other supporting materials. Signature Registration No. Date: S /a ,p00- '%s N y? Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E. Director Division of Water Quality North Carolina Division of Water Quality, 401 Wetlands Certification Unit, 1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address) 2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location) 919-733-1786 (phone), 919-733-6893 (fax), http://h2o.enr.state.nc.us/ncwetlands/ \O?? 7 pG Micnael F. Easley Governor r William G. Ross, Jr., Secretary Department of Environment and Natural Resources Kerr T. Stevens Division of Water Quality May 22, 2001 Swain County DWQ Project No. 010457 SR 1151A (Jenkins Branch Road) APPROVAL of 401 Water Quality Certification Mr. C.R. Styles, P.E., District Engineer NCDOT P.O. 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 220 linear feet of unnamed tributaries to Jenkins Branch in order to improve SR 1151A (Jenkins Branch Road) in Swain County. The project should be constructed in accordance with your application dated 14 March 2001 (received 28 March 2001). After reviewing your application, we have decided that this fill is covered by General Water Quality Certification No. 3289 corresponding to the U.S. Army Corps of Engineers Nationwide Permit Number 14. In addition, you should acquire any other federal, state or local permits before you proceed with your project including (but not limited to) Sediment and Erosion Control, Non-Discharge and Water Supply Watershed regulations. This approval will expire with the accompanying 404 permit unless otherwise specified in the Water Quality Certification. This approval is valid solely for the purpose and design described in your application (unless modified below). Should your project change, you must notify the DWQ and submit 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 the conditions. If total wetland fills for this project (now or in the future) exceed one acre, or of total impacts to streams (now or in the future) exceed 150 linear feet, 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 which conforms to Chapter 150B of the North Carolina General Statutes to the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. This certification and its conditions are final and binding unless you ask for a hearing. North Carolina Division of Water Quality, 401 Wetlands Certification Unit, 1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address) 2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location) 919-733-1786 (phone), 919-733-6893 (fax), http://h2o.enr.state.nc.us/ncwetlands/ 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. Sincerely, P.Steve Attachment cc: Wilmington District Corps of Engineers Corps of Engineers Asheville Field Office NCDWQ Asheville Regional Office Central Files File Copy Am 01 0457 STATE OF NORTH CAROLINA DEPARTMENT OF TRANSPORTATION MICHAEL F. EASLEY GOVERNOR March 14, 2001 Swain County SR 1151A Mr. Steve Lund, NCDOT Coordinator U. S. Army Corps of Engineers Regulatory Branch 151 Patton Avenue, Room 208 Asheville, NC 28801-5006 Dear Mr. Lund: LYNDO TIPPETT SECRETARY The North Carolina Department of Transportation is proposing to grade, drain, base and pave primarily along the existing roadway of SR 1151A, Jenkins Branch Road in Swain County. In order to construct this project in accordance with our current secondary road standards, and due to the rechannelization of an unnamed tributary to Jenkins Branch (DEM Class C), and the replacement and/or extension of two (2) pipe culverts in two unnamed tributaries to Jenkins Branch, 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 channel change and the pipe rep la cement/extensions in the unnamed tributaries of Jenkins Branch, 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 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. n b ri2 -< "<:? _rn r-n Z -`q P.O. Box 250, Bryson City, NC 28713 Phone (828) 488-2131 AIL Mr. Steve Lund Page 2 March 14, 2001 By copy of this letter I am asking Mr. Owen Anderson, 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. Anderson 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 y, C ,?C C. R. I s, P. E. District Engineer CRS:sd atta. cc: Mr. R. G. Watson, P. E., Division Engineer Mr. Mark Davis, Division Environmental Officer Mr. E. L. Ingle, Area Roadside Environmental Engineer Mr. Owen Anderson, 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 AM DWO 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. (WORK) (828) 488-2131 4. IF APPLICABLE: AGENT'S NAME OR RESPONSIBLE CORPORATE OFFICIAL, ADDRESS, PHONE NUMBER: Sarre as above # 1 LOCATION OF WORK (PROVIDE A MAP, PREFERABLY A COPY OF USGS TOPOGRAPHIC MAP OR AERIAL PHOTOGRAPHY WITH SCALE): - // COUNTY: S t/i Lk n -NEAREST TOWN OR CITY: ? ?'n C i tt? SPECIFIC LOCATION (INCLUDE ROAD NUMBERS, LANDMARKS, ECT.) J I `V en F i n _> ??C &Y's0 011 6. IMPACTED OR NEAREST STREAM/RIVER: Yf` ^I t 16-rt <' RIVER BASIN: L ,*Tle,-Tenre-f?-<re Kr?i',ri? ?l 1. OWNER'S NAME: NC DOT - District Engineer: C R Styles, P. E. 2. MAILING ADDRESS: P ,O. Dravkr 250 CITY: Bryson City STATE: NC SUBDIVISION NAME: N/A CODE: 28713 PROJECT LOCATION ADDRESS, INCLUDIN G SUBDIV MAILING ADDRESS ABOVE): > I- II I i ,?7- (IF DIFFERENT FROM U ct,'; ? ? t,?J CL ? n L , 3,1(' L 3. TELEPHONE NUMBER: (HOME) Alk (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 (:] NO 1?4 IF YES, EXPLAIN: (b) IS THE PROJECT LOCATED WITHIN A NORTH CAROLINA DIVISION OF COASTAL MANAGEMENT AREA OF ENVIRONMENTAL CONCERN (AEC)? YES F] NOX [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? _ (a) HAVE ANY SECTION 404 PERMITS BEEN PREVIOUSLY REQUESTED FOR USE ON THIS PROJECT? YES O NO 0 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 E] NOX IF YES, DESCRIBE ANTICIPATED WORK: 9. 10. (a) ESTIMATED TOTAL NUMBERS OF ACRES IN TRACT OF LAND: 7. L/ O (b) ESTIMATED TOTAL NUMBER OF ACRES OF WETLANDS LOCATED ON PROJECT SITE: Or1) A) I---- (a) NUMBER OF ACRES OF WETLANDS IMPACTED BY THE PROPOSED PROJECT BY: FILLING: FLOODING: DRAINAGE : EXCAVATION: OTHER: 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: ' lr- o FT WIDTH BEFORE (based on normal high water contours) WIDTH AFTER: -- AFTER: ISO FT JI-' FT FT AVERAGE DEPTH BEFORE: FT AFTER: C?• ?! FT AIL (b) (2) STREAM CHANNEL IMPACTS WILL RESULT FROM: (CHECK ALL THAT APPLY) OPEN CHANNEL RELOCATION: PLACEMENT OF PIPE IN CHANNEL: Jc?1 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. DESCRIPTION OF PROPOSED WORK INCLUDING DISCUSSION OF TYPE OF MECHANICAL EQUIPMENT TO BE USED? (ATTACH PLANS: 8 ''/1" BY 11" DRAWINGS ONLY): To widen and pave SR ilr;I A to meet current NCDOT Standards by use of track hoes, bulldozers, dump trucks, back hoes, manual labor, etc. 13. PURPOSE OF PROPOSED WORT: Sara as above in # 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 qai n the needed width to build SR 1/5-1A to NCDOT Standards. All Channel changes will be constructed in the dry Rip-rap will only be used for bank stabilization. Alders, Red Maples, Black Walnuts, Willows, Sycamres DQgAyMs etc will be-re-established on the banks. All pipe replacements will be placed slightly below the existing strearr>5ed 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 by 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 PROJEC VOLVE AN EXPENDITURE OF PUBLIC FUNDS OT THE USE OF PUBLIC (STATE) LAND? YES NO Q (IF NO, GO TO 18) Alk (a) IF YES, DOES THE PROJECT REQUIRE PREPARATION OF AN ENVIRONMENTAL DOCUMENT PURSUANT TO THE REQUIREMENTS OF TH ORTH CAROLINA ENVIRONMENTAL POLICY ACT? YES [] NO (b) IF YES, HAS THE DOCUMENT BEEN REVIEWED THROUGH THE NORTH CAROLINA DEPARTMENT OF ADMINISTRATION STATE CLEARINGHOUSE YES O 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 NIS. 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 woodland, Racidpntial (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: 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. r' z/s 10 OWNER'S/AG SIGNATURE DATE (AGENT'S SIGNATURE VALID ONLY IF AUTHORIZATION LETTER FROM 4 L 1 !r3 ' 1x,_`9 i X07 ' ? ? \ I e 01'NC^ 1701 O 16 1R, 173] i _ .. 5 I:t6 L n1 13"S C •a l? . O A S a 1 ?.6 ?0 •7 17n 1x'7 0 I XII 1?J, y 136.1 S 1M 01 ,07 p i IN, BRYSON cm • 1, ' r_I ''59 Q \ \ 1.. ?r ?;?a a?i 1311 `? ?p I I a \V 115: i _. Z,Y??L->=OcQ. r ? , / \ 1155 I:61 O y 1 N AT I O N A L fl?j?f a 1 - 11b (,cJ H 1 h o . Q _ ? J?nkln5 ?. 11? / 11.1 F O R E S T :,; Prankhn Gro:G,.?l j r F`t, g _ - Co. 4 ., i II.\ /. " _.?'\ / r ?.2' i /?. r" - _?=M`irN`1R r CT• ' `- i.•sV ` ,. i/.`_`? ? .. 1-Tft?y ... •? IV' r /? 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'/? / ^ Copyright (C) 1997, Maptech, Inc / C ) L v ,? w 7 91 / 11 0 . 7C rl k-' f •r1 S 3 12 , AM TEMP SLOPE DRAIN TEMP SILT DITCH EARTH EMBANKMENT SILT FENCE FIBERGLASS ROVING RI P RAP T -TSD- : -- E G P-96% p2 & .In 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 flowwhile retaining the sediment. They may also be used to diver-t f water alow toprotectethere significant ensure outlets. Silt fences need to be checked after each 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 CRI'T'ERIA: Material Fabric Steel posts length Post spacing With Wire Without Wire Type 3 Class B 5 ft. 6 ft. maximum Type 3 Class A 5 ft 10 ft. 17 March, 1992 C4 r :24 W -3 4= < c.3 U V F W V F2- A CLI o? A < _? o N LT-7 7 U A 2 z- <Z F -i6 N W ?V O< E- V F 00 L" A p Z ..7 C- < O F Ui C O < F =Ti C C='' I- ? 1I- `-I I I I -? U L) Ill ?W d F ©E- I ? C.. ?I ---------- C'-W j= Er- C4 II C C4 IIII- CO F I L U I?; ? I - V) c _ < W ?? - - E -- Z N N < F C O W OW ?GQ47?7tn -<? - Z_C4W -? - ?Gr..7Vpc? < , Z W E4 <<? ?<F -?L• W W NN C <W O G UZOZ- >- W E- C c- fn W r. ' A C C C C -= F G "- < C O C W - W " Z - C Z W V C Z C C < VI W, ? F WG-3 Z:W,: ZE--L C o W ?C7 U=?E" WE-VV FO ~ W <` C < C N W Z 18 i Z G I Z' C aw i Z' z ?? IN ;LJ . L ? i c a 0; z? LLJ U w I I GQ <I ? .Z C :. CL Li `5 O i- z V J O N 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 .40 pIN M •r. I ?I i,- ' ;? , I , l .. ;:•;. , ii,cy, V - i ii , Lil - CL ' Hill o¢ r- -oz N Z LLI V) r iv d LL) (r 7J•' -?'• )' -- I I i i? Q l 77?[.. -- I 1 i i (n $ -' !I; ?! -VA 1,`?1),., .t , I om ? iI IkI. 1. o = • W E N I` I O I 'Z 24 March, 1992 . ROCK PIPE INLET PROTECTION TYPE-A: o 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 -1#5 or 1#57 stone • Sediment storage area - 1800 cubic ft./acre • Dam height - 3 ft. minimum 33 March, 1992 Q G C- C. s ?. F- J C L ? I u cJ W E J - L Z Q Z F ? ¢ E. CO 2 O ¢ O W i Q (n A F a. O E < L3 u Ca] ¢ ¢ U o .? -3 Z Cm ¢ e V) Ca7 = Cal o w o= W© C ? E-- Cn W Lei] Ca F Z U- C... F O r7 - : C -7 U Q F O CO Zp O< pU Z Z¢ p C4 CZ Ca. U o L7 E' p Cal N 14 ?G]4.o CL3UF`O -3 C4 F cn CJ F p Z W Z F C4 Cn © C!] ¢p aNO -3 w :cCn ¢F4U 0 W E--?U C+7 U --3 -j 1 Ems. Ems- C,3 -3 Z a U Ems- :t C4 W W F N a _ z z z C/) a O Z Z G V E- + o o Z m co oU F UU Cn V) ta. C- U ¢ O F 34 0 z 0 (7 C O I '^I a (J I 11 I H W ' z I ' I O N Q J C G ?.? ' Q J ? ? z O O a. Z a s U W N (.17 J O C 0 U w a w w w ? o z N NN w w 0 C) C O p N N Z' O O O O O O O, ? . O N N, w ; E" /,. : iQ 0.7s . a- 'l.. T Q W U W Z C:: 1L Q j J Z C? . Lli Y - U J O 0 Q o n i March,1992 ROCK SILT SCREEN: A rock silt screen is a low-level dam structure invent trans by running water sites. Rock silt screens shall be used to trap sediment ported 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 hh mtrapped sediment particles transported in the stream from the construction from the stream. shall be cleaned out before the device is removed 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 i. .y r C3 O 4 O a = W W > N C- 0 N ~ O i 0 0 ...7 W W F Z cn Z Z ,- c n W < G W cn Z W U O O C 4. Zcn: CVC W C N < vFiC4=CC- zpcz: .1 CCNn cFO ON_O=0 ¢O<GZ UOcn FO O Z C 4. W G. O W E- Z W F ,L Z W ?WU WFp©ZWZEU C40 U Z-3 CUE- : y © ¢ CL.-: i °c Co..]W 6WCX..?G...: W E CoE- ^JF' co o ZyUF<<F;CF. O N W 0= 0 0 U r O C O W Z m u cn U E V) V7 4. G. U co _ n 38 '`t r. 6 _ c 3 w W t > W 0 Z U LL z J ?" "ic =z W U o?- o-~ O -% CC ?= C - _ x O +' ( w O ?i .• w O U 1O i a _. C d = o 'W a o z E. . O' ? m W , N % March,1992 ?SwA? ?? Co. ROAD NAME ?i?,?!;c?s i3,e g?/C? S. R W. O . FROM ADD ITION IMPROVEMENT TO BE PAVED P. POLES TO BE MOVED 2 T. POLES TO BF_ MOVED - D -- R W WIDTH , / I" = 50 SCALE -DATA - r?-?G- 99 3?? ?•- V?; .? L t V u?. • • • • • • . • . . . . . . . -- .Railroad . C :!.'Con'trol of Access Line•'..... • . • • • •. :. A Slope Stalce Dine .................. _ Culvert.*•%.'.: :: .:'... ....... :, ICJ . j, (;)•i•O or - ?--••`-_ ,'. Wooas .. . Telz lint nc.'1'el??r<<l?la l'olc III1tot1 -4p P • • ' . -? III Tower Pole and Line.. . Power Pole .' .: ... at:xb:i'a' S i-wItnl' .b ' .. . . 1 `i IJaseinc»' Line. ' . '. .. ... . e e . .. .' ,wo%ving Limit' . •• ................. Guard Rui1 ..' ....:................... .. Sanitary..Sewer-Line..:........... • .: Water Line ;:.'..N.?......' .:......... ... C, a5 -o--- Gas Ling .'............... ........... • ,.111(011usr:D [:,xIS riNG Chain Liiil•-. Fence ...... .. • .. . Woven Wire Fence...... . • ........ --? _ Reforest;Idoll ' ...................... e : .?. . -- Ts T.) -TenlhorLu•v Silt Ditcll Tempor,11•v Silt 1 ell ....... . Temporat-y.Slope Di"aitt' .:.:.... ..... . . r • ?r,•• ',' , ....:- ? wit .... Brusli Silt Clleclc Dam Type A•.••:..... • ...... • n Silt Checlc Dam'llype B e ••• s s . • e . • a • . • s , Sitc Basin l -pe •A...::.:. ..:•.......... /%?G ' Silc Basin' Type B ........'..:........ . Roelc Silc Clleclc Dam ................ • . 2at'lh Dcrnl :':...... ......... . Temp,' Slone Ditch Check . , .. Fa- n?nr? ?n 1 , 1> EV?Ry S7d?it) E'??'?i7" /i.V ' Gz, dIV6 3 ;. /S Nz-,r t"// \7/ _eydT ?-d -SC/IGE_ s L,5,i16r,;/ '-OF? 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