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HomeMy WebLinkAbout19950282 Ver 1_Complete File_19950314State of North Carolina Department of Environment, Health and Natural Resources Division of Environmental,Management James B. Hunt, Jr., Governor Jonathan B. Howes, Secretary A. Preston Howard, Jr., P.E., Director r4**?EHNR March 17, 1995 Macon County DEM Project # 95282 APPROVAL of 401 Water Quality Certification Mr. Trent Anderson County Maintenance Engineer NC DOT P.O. Box 1551 Andrews, N.C. 28901 LP F Dear Mr. Anderson: You have our approval to place fill material in 0.009 acres of wetlands or waters for the purpose of road maintenance at SR 1620 (Turtle Pond Road), as you described in your application dated 8 March 1995. After reviewing your application, we have decided that this fill is covered by General Water Quality Certification Number 2732. This certification allows you to use Nationwide Permit Number 14 when it is issued by the .Corps of Engineers. 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. For this approval to be valid, you must. follow the conditions listed in the attached certification. In addition, you should get any other. federal, state or local permits before you go ahead with your project. If you do not accept any of the conditions of this certification, you may ask,for an adjudicatory hearing. You must act within 30 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 Environmental Management under Section 401 of the Clean Water Act. If you have any questions, please telephone John Dorney at 919-733-1786. Sincerely, P eston Ho ard, Jr. Attachment cc: Wilmington District Corps of Engineers Corps of Engineers Asheville Field Office Asheville DEM Regional Office Mr. John Dorney Central Files 95282.1tr P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone 919-733-7015 FAX 919-733-2496 An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post-consumer paper I _ ?MAR 1 41995 ?4s'zt MD ni STATE OF NORTH CAROLINA DEPARTMENT OF TRANSPORTATION JAMES B. HUNT, JP- DIVISION OF HIGHWAYS R. SAMUEL HUNT III GOVERNOR SECRETARY P. O. Box 1551 Andrews, N. C. 28901 DE D-) i+ 9 S a 8-Z March 8, 1995 MACON COUNTY SR 1620 ????? Mr. Bob Johnson US Army Corps of Engineers Reg. Field Office Rm. 75, Grove Arcade Building 37 Battery Park Avenue Asheville, N. C. 28801-2714 Dear Mr. Johnson: The North Carolina Department of Transportation (NCDOT) is proposing to grade, drain, base, and pave a portion of SR 1620, Turtle Pond Road, primarily along the existing roadway. In order to construct this project in accordance with our current secondary road standards and due to the proximity of a trout stream (Turtle Pond Creek and tributaries, DEM Class C - Trout Water) and replacement of pipe culverts, we are requesting authorization under Section 404 of the Clean Water Act. I am sending a location -map, straight-line diagram, plan-profile sheets, erosion control plans and details, and a U.S. G.S. map indicating project area and location of proposed pipe culverts along the road. We propose to install the new culverts slightly below the existing streambed elevations where bedrock is not encountered to minimize impacts to wildlife habitat and allow the existing stream gradients to remain as unchanged as is physically possible. The best management practices will be used to minimize and control erosion and sedimentation on this project. The construction foreman will review all erosion control measures daily to ensure erosion and sedimentation are being effectively controlled. If the planned devices are not functioning as intended, they will immediately be replaced with better devices. The rock silt screens and other erosion control devices will be in place prior to pipe culvert construction and will remain in place until the project is stabilized. ??r Mr. Bob Johnson Page 2 'larch 8. 1995 By copy of this letter I am asking Mr. David Yow, North Carolina Wildlife Resources Commission (NCWRC) District 9 Environmental Coordinator, to comment directly to you concerning the 404 Nationwide Permit request. A request will be made on this project for a temporary encroachment in the Trout Stream Buffer Zone of Turtle Pond Creek and tributaries and I am asking Mr. Yow and l4r. Ed Ingle, Area Roadside Environmental Engineer (NCDOT), to comment directly to me concerning the Trout Stream Buffer Zone Encroachment. Also, by copy of this letter, I am requesting authorization to proceed under Section 401 of the Clean Water Act from the Division of Environmental Management. We would like to begin construction as soon as possible. If further information is required, please call me at (704) 321-4105. Your early review and consideration will be greatly appreciated. Sincerely, W. Trent Anderson County Maintenance Engineer WTA/rr Attachments cc: Mr. Richard Phillips, P. E., Regional Engineer, DEHNR Mr. F. D. Martin, P. E., Division Engineer :dlr. E. L. Ingle, Area Roadside Environmental Engineer Mr. Eric Galamb, Water Quality Certification Unit, DEM Mr. David Yow, NC WRC DEM ID: ACTION ID: Nationwide Permit Requested (Provide Nationwide Permit #): 14- JOINT FORM FOR Nationwide permits that require notification to the Corps of Engineers Nationwide permits that require application for Section 401 certification WILMINGTON DISTRICT ENGINEER CORPS OF ENGINEERS DEPARTMENT OF THE ARMY P.O. Box 1890 Wilmington, NC 28402-1890 ATTN: CESAW-CO-E Telephone (919) 251-4511 WATER QUALITY PLANNING DIVISION OF ENVIRONMENTAL MANAGEMENT NC DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES P.O. Boy 29535 Raleigh, NC 27626-0535 ATTN: MR. ;OHN DORNEY Telephone (919) 733-5083 ONE (1) COPY OF THIS COMPLETED APPLICATION SHOULD BE SENT TO THE CORPS OF ENGINEERS. SEVEN (7) COPIES SHOULD BE SENT TO THE N.C. DIVISION OF ENVIRONMENTAL MANAGEMENT. PLEASE PRINT. 1 1. Owners Name: NO??h Carolina- De?aAmen- 4 7-ransP04-!J 10^-. 2. Owners Address: P. 0. Soy- 155 1 AnclfeWs WC, ZSgD 1 3. Owners Phone Number (Home): (work): 004) 3Z 1- 410 S 4. If Applicable: Agent's name or responsible corporate official, address, phone number: W, -rre A t-\.r1Aersov,- 5. Location of work (MUST ATTACH MAP). County: 0. C -0M, Nearest Town or City: N t a1 t1 I a rJS . NIL Specific Location (Include road numbers, landmarks, etc ,SR I620 C-Turtle- Pond R 6. Name of Closest Stream/Fiver: ?u r (e nd Ct'e e K d K? Cu I I a SA jg R r F< 7. River Basin: Li Ule- -Ter1r?essee. RiVe'e- 8. Is this project located in a watershed classified Trout SA, HQW, ORW, WS I, or WS II? YES PQ NO [ ] 9. Have any Section 404 permits been previously requested for use on this property? YES [ ] NO [)(] If yes, explain. 10. Estimated total number of acres of waters of the U.S., including wetlands, located on project site: 11. Number of acres of waters of the U.S., including wetlands, impacted by the proposed project: Filled: 0. 009 AC, (e-_,., Drained: Flooded: Excavated: Total Impacted: y Y I LOc A-r iOK1 [vtAp] SR I (020 - TUR-TLE POND ROAD • ?/ 1 -.? 1333 V'( 13]) J ? \ ^ `? Hy?? is3e \.-. le;ems 4 Ian \` _ 1 C('LL:ISAJA -' - - - - FALLS C,,ra i 39 79 G SKY-111 /"-" ?< lew. - cAMr / .? 3 rAI `?? J , O Iv FISNHAwK 66 e.3 -!2 I Is.l COwEE TN. '! a 3a aa• s GAP 3.? 'oo ., C a S?,t/ ` •i s. .o -3 38 7.6 64 '51A E?•F.X ?A l62 4 IeTe 50 ^ OK CAMP 35 o5 fyr D U -+?•J Ia3e coMill "c.T1 G ND - Ia bre I.o?; S I.I Ie3o a? _. i I6eo cB .. AL y IEIGNIANDS ;> y. POI. 653 • d ? ':.l j' ?/?..,\I KucoN co. es31 1KKSON CO. 0 L J ?1,-- DOG MINv y ) •\ _o leas 3 1603 1 p ?: 1.P ''?•'°?• } B 2.5 Rd. SCALY MTN. co KNOB \\ leT? t?- ELEV. 4,60. 1671 ' I6oe •? 28 TIIIA. T. lel,q Ie:t t?? I ,C•j LITTLE .? :I .RV ` h 3 , i 106 SCALY MTN ELEV. .aoo . , CON :TJZU 6J,01,( I ? - R F O. 3 ro a >. ,72o\\ 1621 Rd. ?? . 1 we y? ? ?• Ie1t 710 Scnl ,1 tb17 Ik10 1 16.7 76 tEp ?- R OSAGE \ a I6o9 t]3 .S Rd ]6 fit \./'Nul Ep1. Ie>C )? ..?..r..?...?+'I ?'`? r.?.\+?• •+r.D ...r•.. ?i 7 a«? i ;o c? MACON COUNTY N? ?-- SG' 3s 00 _ OCONEE COUNTY A Cred A '4N ?sade Lake a s?FCR -zowe 64 188 #1 _a gV 'lei l 1 ' V- /i Tit ck? - ••0 1. i ??ZT \ LLL l PO ° ?, ? I ?_" ? RAC. ? ? ? ? / ?•. Gry J- 7 p % ni .3600 . ?. ?.. / I?qt •'\ \ \ '\ It, 'loci h ' it - ;kskillet" WILEpNSA „? ?? ??I i??//? ?? .? ?,??)I ?_ ??V' ???J ??r'°? ?p • ? ? ?i I ? t ?? t 1 . i-'J / s c`' d ?40 ISCtlS$ j -GON - - - C? 1 - _J3QA D TURTLE POND ROAD S- ?- - - - W . O . h_9-72122 AI)D1TIUK -. IMPROVEMENT TO BE PAVED P. POLES T-Q_RF MOVE12 _ T. POLES TO BE !MOVED R/W W.IDTIL_------ SCALE DATE. F X 50' 1"- 50' 03=08-95 U.S. Forest Service (32) 185+00 + . I I A T`ZYE g GHeCW- 'DAMS SP?cEU AS 1ZCQv V i N ?' Ro-S rc c 182+501A (31) 180+00 185+00 U.S. Forest Service (32) ml 11 s f' lSZ -rsa F3EGAIm B.?FFCR z?Nel SeCA V4 TSB E, 128 182+50 Q= (31) 180+00 1136+00 1167+00 1186+00 ?t 11 ?, STA. 187+50 1 N END BUFFER ZONE END ROCK BERM u / TYPE B SILT BASIN 8' X 3' X 2' II NOTE: TYPE B S I L T BASIN HOLD SHOLDER P01 NT 185-t-00 10 ' X 3 ' X 2 ' ARMOR SLOPES WITH CL. 2 RIP-RAP 188+00 187+00 186+00 u 1134+00 1183+00 If82+50 TYPE B CHECK DAMS SPACED AS REQ'D "0 ' 1 I STA. 182+50 BEGIN BUFFER ZONE BEGIN TSF & RB 184+00 183+00 182+50 BUFFER ZONE ENCROACHMENT #1 S.R. 1620 (TURTLE POND RD.) -MACON CO. N.C. 11 - - + ? i J -- J j ?;rtj1 a't I -fi- 1? - -- i ? t -i ? 7- - - - - - 1 J r - t-f - ---- ia?i % T I ? I +r 193+00 I TYPE B SILT BASIN 8'X3'X2' II 192+50 --I STA. 192+00 END BUFFER ZONE #2 192+00 fk, END ROCK BERM ? I I a t+5,, 191+50 I I 1 +i''I 191+00 TYPE B CHECK DAMS i SPACED AS REQ'D 190+50 I ,. i'.?n+Co 190+00 18 9 4- ? 189+50 Syr., STA. 188+75 BEGIN BUFFER 189+00 188+'` ' ZONE # 2 188+75 I? BEGIN ROCK BERM ti- BUFFER ZONE ENCROACHMENT #2 S.R. 1620 (TURTLE POND RD.) MACON CO. N.C. I ; f t -} 11 j - f } J j i ? a- t __ _ _ _ __ _ _ + ! 4-4 - --t--4- .+-1 -.4 1- ?- - -- I - i t Y i T -- - - - - - 1 ' ! T - _- - - - - a rt 4 - 1 - T _ ' f - - - i -. I- ?- - - - I -- }} t I - -{ - - - - - - -- - - - - - - - - - - - ? - - - t - ? ? 190+00 A i --5 S-cp. Asa-t5o E ?vv F: cq R T`f P? S c NEck, .p?5 SP?cED r?s ,-zEQ ?p• (32) a4 S-Tk ?8?-e So F7E?s fl.J F?q? s ?•AS? N 50- 9 V V rNote: Replace with new 18" 1 I Type T5 S %L--T g p s, r-l 185+00 ?190+00 nc STA. 1aB -t-t S le7EC1%N P?uFFERZoK6 Z. 13,66 IN Roc.1? $?RN? (32) S-?a ?s? -4 so E No ?? FF?R zoKE ? I Et1C ?Zoc.k F3ERtJN 1 , i N°TE 1?0 ?.V Stio?v 9R -Pot KT APMOR 5.t-ovcs w/ C-L, Z . Tojr RAP 1 ' Cre k 1 185 `? 03 ? z 190+00 19.5+00 i? . 195+00 it `190+00 fft;j I 1 (32) 200+00 1 T` ,F- s1?-T vASlell 8'`b3' xZ' S-r?N. \9!0-E 50 B?C?t1.1 TSF TYPE pa ct4ecr- 'DAMS S'Pp.GE17 D.5 I;t e ep ' q la sk -c I3A?s?h1 s 10' X 3-' K Z' O - - 0 <__5 O 1 195+00 200+00 • 195+00 (32) T?+(YG $ S L L-r ja p's14 5 l o' X 3' X Z? 205+00 STA. Zp5".{-00 E??V R.$. ac STA. Z3+oo BEU?N izoc,K $??M (32) i T? .51 200+00 it ?F I i 1 205+00 f! TYP6 lb c NEpv-, P c.rNS J sPAcED AS c i I +I 200+00 (32) I (32) ?I I I3 ?I In .I -_5 04 (32) T?'P c S l ?- ; F,3 A S 1 N 8x 3 ` x 2' 210+00 210+00 w 1 -___5 O' . s-ra • -z b a-t- so P?EU?N ACA lIL 205+00 T`iPE. 8 s\t.-T P?AS1Pl i tI I Z? X 3` X 2' I ' I I ?' 205+00 215+00 215+00 -C5F i I S \t_T 8 AS\? 8'X3'XZ -<--5 0' ti (32) (32) e: Reglace with new m X -50 TYPE 8 C- %-\EGK -c> S'?A.cel? AS 'REQ'O. I I ! j ? I LL 210+00 _ .210+00 STA. Z??3 -4?Sa gE? ? N TS ? 220+00 y 220+00 I ? I ? U, u t$ y U TYPE '91 StL--T BASINS '? 1-22 x 3 X Z' (32) S I T ?. Z ES HE; I 5 . z?G+i.S SKID "rSF 241' 18" (32) TV PE 3 S\L.T BAS?rl 1Z X 3 14 -Z' P( ur tL N ? E $ G k? ? LK '? A Tuts 5'?AGE'b AS REQ ?. 215+00 f U- 215+00 SITE 1 STA. 216+30 ;?ooo?oo ,,ooa, SITE 2 ;g$;r ;oooaoao - ooooo,o o,o.. FTYPE B SILT BASIN 12'X342' OEM I if r { { { t f . _ t : 1} E? -f ? fi t 11 - - - - -- ++ r ! - 44 4 -1 - S p y A l ?- { IT__ ii tr J _ - i SK Y I I i f _.? n SITE 2 STA. 216+90 TYPE B SILT BASIN 12'X3'X2' - I I TYPE B SILT BASIN I 12'X3'X2' i Imo;,, I I SITE 1 ?ovoo°e I I I I T-_ ' _ - I i f ± - - - I f IF - 7 ' ! - I - _t t - 1 -4 4 -f - 4 r - r- ?- ? - - - - - ----- r M p V I I I I 1 -- 1 h 1 1 - I I I I I l i t t, i T X e t-$ - - - - - - - - _ _ 1 Z . tt I t ._ _- - - - 7-1 4 - --$ -? ?- -r - _ I D LY 225+00 i I (32) T?pE B SILT SASIts Z 1 i 220+00 r- 225+00 I L L/ LPL I A L y ( . s-r<a . ZZ 4 ?r o 0 A (32) Cif TYPE 8 G4ircGK. "DAMS SP4GTc? Acs -??Q,,p I ` 220+00 S-rt? ZZ9+5o (32) 230+00 230+00 A I i A 50, LL H i ?L I- A r 18" ( Q (32) e: j CO; /H I i I J^ I J i 225+00 225+00 T`(PE 8 stLZT BAStt?A %co' x-2 • x Z` C? 4 1 iv-?'ERSEc-? \o N E.O.P. LL r ? No-t- ? o RoA'D ?-o `?i rN \"pE S U RR? E 4 -\-o (32) T`tPE 5 51L--T ,E5A s ? q5 S' x 3' x Z ` 235+00, 235+00 I I i i A V,S 233+451 1233+45 IV j VI j + 1 2 1 IV V t? I1 l -5 0 f? I I .i i 230+00 TYPE g G{-lEC K 't?t?tv?S S?AcE? AS REQ'O. (32) 2 ' i g,q I # T?tPt= ?', %\%-ZT 8+>S?N i A. 230+00 z ' EROSION CONTROL DETAILS AND SPECIFICATIONS Std. # D .s .ri ion Symbol E= 245.03 Temporary Silt Ditch ,,,-,,,,,,,,•„-- ___ TSD V1.2 245.05 Temporary Diversion ? TD ___ V1-4 893.01 Temporary Silt Fence ________ VI.6 890.05 Temporary Slope Drain with Earth Berm E- E-- V1-8 245.01 Silt Basin Type A 245.02 Silt Basin Type B -,__,.,,-„----. ___ vi .12 892.04 Temporary Rock Silt Check Type-A .......... ----------- V1- 14 895.10 Temporary Rock Silt Check Type-B ............ ' ------------ VI 16 892.01 Temporary Rock Sediment Dam Type-A ....... ___ VI -18 892.02 Temporary Rock Sediment Dam Type-B ,._ ----------- VI - 20 897.01 Rock Pipe Inlet Protection _ uVI - 22 894.01 Rock Silt Screen -•..•• ................................... __ VI - 24 245.04 Stilling Basin ----------------------------------------------------- Lq j VI - 26 Rock Inlet Protection:] 896.01 Type A ............................... A OR --A) ----- VI 30 896.02 Type B ............................... B LLJJ --OR -- B ) ----- VI - 32 896.03 Type C .................•---.......... C El __ OR • C ) ---- VI 34 VI-1 March, 1993 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 T VI-6 March, 1993 . 11 5il ww ?3 3 O 3= x3 a ? X m ? (D Z- aZ mx (n w 0 O a ~O ?m O m w ODD Z a J J 0- a O Z 1- (n LL W O 3 W H O z J J LL m O Li a: U w3 a. J Z O LA- a U O n I - C --0 LL LL II _ %I ?s O ? o? o x-111 i Z a 'm a) %I I I U Z , - N M CO r-- ? I w • SOH -------- ----------- 'ZO O?- Z N .-? z W3 a w z = c? in 2 H = li z 0 x Z LL Q Z < a(n am= ~ O w tV C? wJ m J O w w i cD W J? Ln ZS a JZJ :C F- m a J 3 (LO i- w a w Li -i it mCOW 0 ' W ? = w re J Z 0 =; 3 F- w CO ¢ ? O >- (f) _j ( n =a w LL3aaDa Z w 00 LO =z F-- .--. J W cr- zO° O w- w w J z H Z f- W a ? E-- (n tLz O ° 3U "" J U 2 - -J 0 3 Z LL au. Wxw a Li a . (n 0 30 . O (n OwO 2 a a u O m a LL O w J z 3 Cr 0 w o: 0 z a O w N a z tOD LL.! U W LL J a'• cn a? e?U } VIZ 960 z°a w U.09 H?. O ?o a? Z a O .c C A N i VI-7 March, 1993 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 CRrmRIA: • Width - variable • Length - 2 times width • Depth - 2 ft. minimum storage - 1800 cubic feet/acre (equals L x W x D) VI-12 March, 1993 ::Yg N ?I p N ZIG Flc u; Ini 1 ?jl v t?, v"ly l?v \ L - -? v)t )\t ?? L ll)` t ,t W V I I I i y?? I. ? ' y , ),ty vi?)tav a) )t'y?a x I ? 'III , I It 1; \) raw »0 -.Z ) wa ` !? y a y) t? III - . zcn I.III ya,)y) l W I II L r C J r?.T - Q . . y?) - rn o I-- xx:xi E- Cn o ?pp) I II I I - Q J Q4? j ? a L: ox , ` I I IT W W Q? . ) " ) t)a)l) ) I I !II!I O Syr O wI? W) v W r y yy t9 _ Hi ll J I VII Z E? "` ' ' Syr I a ? ) ? ?1111111 = I I! I I 'dV^ \ii:' r b ?i )v) a =- s i yM +) i o 11 f VIII x Ili VIII It y\ t ?jl ? ' CC i ) v\ ' y tv t y t - o o l\V ;t?,? ?t??)z,? ? _ _ - ? 111111 1 ?= 1 t y\?t y "\ t\v CO VI-13 I 1 ?I ' March, 1993 TEMPORARY ROCK SILT CHECK TYPE-B: A temporary rock silt check type-B (also called check dam) is a small dam with a weir used to reduce gullying in drainage ditches that are to be filled or permanently stabilized at a later date. These type-B rock silt checks help reduce the flow velocity and are generally made of class-B stone. They are used in ditches during construction where the grade meets and/or exceeds 3%. AREAS OF USE: • In channels, roadside ditch outlets, temporary silt ditches, and temporary diversions. • In conjunction with type-B silt basins. DESIGN CRITERIA: • Center of rock silt check shall be at least 1 foot lower than the outer edges (top of channel sides) • The spacing (ft.) = (3 / % of ditch grade) X 100 ft. VI-16 March, 1993 7+ V ~ W CD Q- O ¢ CO O = _ v U W O CL ¢ W Cr_ > o LL LL d O O O F- w w 0 z 0 Cr v a `a z 3 W z J z 0 F- U U f- W '-' U) O (f) W U) W O > Cr U U O ¢ ! I O o ? I; I 3 W N LLJ ¢ z Cr F- 0 .-, o ? ( > J LLJ ¢ !' W 0 J LL e Co o • LO LLJ <1 m L LU F- G ? ? J z Q U) z ' 0 T ll l" O z ?. O ~ z J % w ¢ - ICI O N 0 O W U Q (II' I xq i W F- VI-17 March, 1993 m U W ¢ O J ? F-J¢z (f)o=Ozz XL0000 W H H ?-• mzOW W o z = m o JU¢?-Wm= J CL W ¢Z^F- =0- ¢Wm- U)-m UOm (f)• CC-LL. W O O Cr ZMCOLLmWW O W U) z U) WF- ¢OF-O¢ F- (nCE'J - F- -J O oU¢zwu Z LL--m0- - N?Q -rtl C5Im ?ILo E`,a, ,rim m W m u W U ~ ?Q U x?? CC Q ? OC ??= Q ?(a- W Q ?A mF W F- Q Q Q F- C O E n 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) VI-24 March, 1993 c; 41 o! F' '' 1 a 3 w lJ l ? N a- 0 W N a CD J Y m LL O a 0 z d ?x z °zE--¢ z m?"WZ °0d°z n-?o U) Z E- o. O E-? a w E. ?¢dwU) CO O E- G. -1 o zwuA oa z?= X-IX o r°¢w w.a w a ???G LLw EOaE Co Fwd ?wr„ a z ¢z awa ?jmFFO °.n OzzwA° CO C- 0 d0¢dz?' Uo Uoooz L?Cz. a0.5W ?F z w E. z U z Q W W EE-U3 vwE-OOmwWzE-.w 5W UZ.7mUE.._ and a,,..a?m° ?E-.W-jo4 VQ..awawW.x.a m ¢z W F V)F -aF U)waz VE- ¢a F O?wOx00V) C)0EZ W Z mUU)UE-U m ow4U M -m :z zz m LL O a 0 3 W Z > f H z 0 m LL X a w z z o + ` a ¢ F- f u aj,? f W T' n ir , N U g ??• ? W N z 0 w N ea VI-25 March, 1993 z W W U C1? a? H oe Cn ?? UZ ? U H" Oz ;z. O 07 O WWI ? ? ca Q F C z Q V J E O n 1; . r PIPE OUTLET ENERGY DISSIPATOR: 00 ••i ••i• A pipe outlet energy dissipator shall be used at pipe outlets to slow the water velocities when it exits the pipe and flows out ditched or natural waterways. It is an apron of stone of a sufficient thickness to protect the outlet area from scouring out and causing off-site sedimentation damage. Pipe outlet energy dissipators should be built according to the guideline chart shown on page VIII-3 of this manual. AREAS OF USE: • Outlets of pipes and culverts to prevent scouring. DESIGN CRITERIA: • In accordance with chart on page VIII-3. • Filter fabric, or six inch layer of gravel, shall be used under stone. MATERIALS : • Filter fabric shall meet requirements of section 1056 of Standard Specifications for Roads and Structures, January 1, 1990, for type II filter fabric. VI-34 March, 1993 y JOE r a O C Q1 C Q t ^ c? (Q L r I ".' O .a oC c .. ~ " Q o ' VJ p ai m? 1 (!) •- 1 o 1 'a z a _ 2) N a o W V ll `1 ?iL"1 U 61 .a i? n , W C N I t3 i..L O p ?w ?U o C o O 0 oa ??. = ? o° U ., C4. 1 1 Q. oA .r ti y 4 ??= ?? 11 If II C VI-35 March, 1993 DEPARTMENT OF THE ARMY WILMINGTON DISTRICT, CORPS OF ENGINEERS P.O. BOX 1890 WILMINGTON, NORTH CAROLINA 28402-1890 REPLY TO ATTENTION OF September 21, 1995 Regulatory Branch Action ID No. 199502358 and Nationwide Permit No. 26 (Headwaters and Isolated Waters) North Carolina Department of Transportation Division of Highways W. Trent Anderson Post Office Box 28901 Andrews, North Carolina 28901 Dear Mr. Anderson: Reference your application for Department of the Army (DA) authorization to replace and/or extend several culverts in unnamed tributaries to Turtle Creek in conjunction with the upgrading of SR 1620, Turtle Pond Road near Highlands, Macon County, North Carolina. The project will impact less t?Kan 1/3 acre of Waters of the United States. The proposal has been reviewed by t e North Carolina Wildlife Resources Commission (WRC). For the purposes of the Corps of Engineers' Regulatory Program, Title 33, Code of Federal Regulations (CFR), Part 330.6, published in the Federal Register on November 22, 1991, lists nationwide permits. Authorization was provided, pursuant to Section 404 of the Clean Water Act, for discharges of dredged or fill material into headwaters and isolated waters. Your work is authorized by this nationwide permit provided it is accomplished in strict accordance with the enclosed conditions, and those outlined in the attached August 16, 1995 WRC letter. This nationwide permit does not relieve you of the responsibility to obtain other required State or local approval. This verification will be valid until the nationwide permit is modified, reissued or revoked. All the nationwide permits are scheduled to be modified, reissued or revoked prior to 21 January 1997. It is incumbent upon you to remain informed of changes to the nationwide permits. We will issue a public notice announcing the changes when they occur. Furthermore, if you commence or are under contract to commence this activity before the date the nationwide permit is modified or revoked, you will have twelve months from the date of the modification or revocation to complete the activity under the present terms and conditions of this nationwide permit. Questions or comments may be addressed to David Baker in our Asheville Regulatory office at (704) 271-4856. Sincerely, G. Wayne Wright Chief, Regulatory Branch Enclosures Printed on 0 Recyded Paper -2- Copies Furnished (without enclosure): f Mr. John Dorney Water Quality Section Division of Environmental Management North Carolina Department of Environment, Health and Natural Resources 4401 Reedy Creek Road Raleigh, North Carolina 27611-7687