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HomeMy WebLinkAbout19940721 Ver 1_Complete File_19940803State 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 APPROVAL of 401 Water Quality Certification Mr. Barney O'Quinn Planning and Environmental Branch NC DOT P.O. Box 25201 Raleigh, NC 27611-5201 Dear Mr. O'Quinn: F15WA A&141 *7 E:> IF= F=1 September 1, 1994 Watauga County DEM Project # 94721 COE # 199202596 State Project No 8.1751201 TIP # B-2178 r^ Fit You have our approval to place fill material in waters for the purpose of bridge replacement at Baird's Creek bridge (NC 194), as you described in your application dated 27 July 1994. After reviewing your application, we have decided that this fill is covered by General Water Quality Certification Number 2735. This certification allows you to use General Permit Number 031 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, *rt bor V,J Nr. Attachment cc: Wilmington District Corps of Engineers Corps of Engineers Raleigh Field Office Winston-Salem DEM Regional Office Mr. John Dorney Central Files 94721.1tr P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone 919-733-7015 FAX 91.9-733-2496 An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post-consumer paper r? (C(OPY 'Lih ® North Carolina Wildlife Resources Commission 512 N. Salisbury Street, Raleigh, North Carolina 27604-1188, 919-733-3391 Charles R.ullwoo?l=Exe?>ie Director Li C3 T: V, {_- f'i3ll+ili v_t+i cl` i" i:a it ,'•: i #:.::a t... ,... .:.: k..:., .. .. .,. , i t_t .. f r':: •.:t {••{ t.:: ?.., .. t;;! } " rt . t t t i)rC' -.,... .p.. ,,.. •P t 1' rg;:?•-rv: r.•::,-- - •{ -r{•{t i{ ..: .. 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The T ! stream area that would be impacted by moving the bridge upstream contains •_.i deep pool with cii rock !edge overhang and ;::i deep riffle area. If. in fact. the `+i ...:.1.: ?_: , has shifted the site :. f e'.-::•,••; this W.. in the original proposal submitted .....: a change ist the ` i•e a ..: b?i,j',- "-; on i' `:ia;{;: i t1:'.:T a 1992. Our comments d(.:+ not reflect this change. We would 1?•'?..: .?',}..ic_i opportunity 4:{ ; comment ?::+n any change in plans ;`n{ + •i: like 1 submitted in { the o r i g i n a l t a. i..:..J .. proposal. Based on the site visit on June 155 19941 the NCWRC WOUld be opposed to shifting Bridge No. 45 upstream because of impacts to fish h a b i t a t . , Thank you for checking into this change in t'd i..:::.: OT project .?y plans. if v. ir.: can +:..•tr_ of r' further assistance, please contact me :..,}. 910/366-2982. Oft Joe Mlckey Joseph H. Mickey, Jr. District 7 Fisheries Biologist cch Ms. Stephanie Boudreau, i{::„ Region Habitat Biologist Gordon Mr. , . ,, t••, ?._:._: ?..3 i Environmental Specialist Mr. Roger Cates, .. ''•i?...: .. 't District ..-.i...i {::E:'.'i' i {::. :: i'.. A Mr. Steve Loftin Sincerely, bSignedby W4".- .1 MEMORANDUM PRINT NAMES: Reviewer: L TO: John Dorney WQ Supv.: Planning Branch DATE: 4 SUBJECT: WETLAND STAFF REPORT AND RECOMMENDATIONS ***EACH ITEM MUST BE ANSWERED (USE N/A FOR NOT APPLICABLE) *** PERMIT YR: 94 PERMIT NO: 0000721 COUNTY: WATAUGA APPLICANT NAME: NC DOT - BAIRDS CREEK, BRIDGE 45 PROJECT-TYPE: BRIDGE REPLACEMENT PERMIT-TYPE: NW031 COE_#: 199202596 DOT-#: B-2173 RCD_FROM _CDA: DOT DATE_FRM_CDA: 03/03/9'4 REG OFFICE: WSRO t.v,4,Titcc6xX RIVER _AND_SUB_BASIN _# : 0 j oy Z, X_ WL_IMPACT? : ON STR_INDEX_NO : 8- ),3 STREAM-CLASS: C ? WL_TYPE : Sn-? WL_REQUESTED : i4oj4.v a.,.,+_ WL_ACR_EST? : YIN yN,E vaw *? WL_SCORE(#): 36 11 41- WATER IMPACTED BY FILL?: Y/6 MITIGATION?: YC s•Z?- r a. s MITIGATION_TYPE: ?"jdIAc-t? r??es MITIGATION-SIZE: V14 DID YOU REQUEST MORE INFO? : Y/o N`i 700T IS WETLAND RATING SHEET ATTACHED?: YON HAVE PROJECT CHANGES/CONDITIONS BEEN DISCUSSED WITH APPLICANT?: Y/?N RECOMMENDATION (Circle One)- , ISSUE ISSUE/CON ) DENY COMMENTS :`?P?- ?? d 1.f J h Od.?l yr A l ?.. O c dc.-TI-c? t a 10 ?pn cf/ C'J C d Q cc: Regional Office Central Files t S 1?.??« G v VQG(a? J X. AUG 2 5 1994 f r , ' y a! v - nv ? i V p' Y t ? Swamp forest ? Shoreline • ? Bottomland hardwood forest ? Brackish marsh ? Carolina bay ? Freshwater marsh ? Pocosin ? Bog/Fen • ? Pine savannah ? Ephemeral wetland ? Wet flat The rating system cannot be applied to salt marshes. • • • • • • • • • • •.. • • • • • • • •, ? • • • . • • . •.•h.. • • • • • •-., • • ! ... • • • • • • • weigt .. • • a Water storage x 4.00 = Bank/Shoreline stabilization 3 x 2.00 = Pollutant removal * 1 4-1 x 5.00 = Special ecological attributes x 2.00 - Wildlife habitat 1 sum:: *Aquatic life value x 3.00 Recreation/Education Economic value x 0.50 = Project name f S' Nearest road t Z County Wetland area 't -O, 3 acres Wetland width ® feet Name of evaluator ?- " = Date `r 6 gna- J • • • • Wetland type (select one) ? Swamp forest ? Shoreline • ? Bottomland hardwood forest ? Brackish marsh ? Carolina bay ? Freshwater marsh • O Pocosin O Bog/Fen • ? Pine savannah ? Ephemeral wetland ? Wet flat • The rating system cannot be a lied to salt marshes • pp . sum Water storage Bank/Shoreline stabilization <>> ':rfi _ x 4 00 _ .:. .......... • • Pollutant removal Z . < > :> `.:: • Sensitive t r h d wa e s e Travel corridor x 1.50 edand score. S ecial ecolo ical attributes ? • > : ? ?? ??: p g • :•> : ;:: ?::. .. Wildlife habitat :::: <:> < Yr 1 50 : x . : Aquatic life value ?--? '- • Recreation/Education yl.: • Economic value x 0.25 Project name '7J c7 T t1- Nearest mad County. Wetland area acres Wetland width :26 ' &w// feet Name of evaluator Z ??? o 4?- ?.7 Date- El Hydrologically connected. O Hydrologically isolated • • • • • • Wetland type (select one) B?'Other 5 ? Swamp forest - ? Shoreline • ? Bottomiand hardwood forest ? Brackish marsh ' ? Carolina bay ? Freshwater marsh ? Pocosin ? Bog/Fen • ? Pine savannah ? Ephemeral wetland = ? Wet flat • The rating system cannot be applied to salt marshes. • • • • • • • • • • • • • • 60 • • • • • • • • • 0 • • • • • • . M • ... • • : • • . • • • . • • ...... . S W m Water storage ;::::f:::::? a x:.•:.:..:,. :•.::.:: ! • Bank/Shoreline stabilization _ x 4.00 - Pollutant removal 2-'°''` • • Sensitive watershed :>::: _ x 1 50 • , r . Travel corridor etland. R,, S ecial ecological attributes d t * • Wildlife habitat x 1.50 - Aquatic Iite value Recreation/Education x x 0.25 _ ><. <' Economic value `:<`< :<v'~>' • •••.••••.•...•.•••.•.••..4b••••••....•.••.••••.•.•.•.•..•• Project name '2)V T tt- V?1- Nearest road ,hLx County- Wetland az ! . - acres Wetland width C W 'feet Name of evaluator ?? o Date_ iC ? Hydrologically connected. ? Hydrologically isolated 0 w F- 4n riP V I S STATE OF NORTH CAROLINA DEPARTMENT OF TMNSPORTAWN JAMES B. HUNT. JR. DIVISION OF HIGHWAYS R. SAMUEL HUNT III GOVERNOR P.O. BOX 25201. RALEIGH. N.C 27611-5201 SECRETARY July 27, 1994 District Engineer Wilmington District Corps of Engineers Regulatory Branch Post Office Box 1890 Wilmington, NC 28402-1890 ATTENTION: Regulatory Unit Dear Sir: SUBJECT: Watauga County, Replacement of Bridge No. 45 over Bairds Creek on NC 194, T.I.P. No. B-2178, State Project No. 8.1751201, COE Action ID No. 199202596. The North Carolina Department of Transportation (NCDOT) proposes to replace the existing bridge over Bairds Creek on NC 194 in Watauga County. A Categorical Exclusion (CE) document was prepared for this project to evaluate environmental considerations. This document was signed by the NCDOT and the Federal Highway Administration on May 22, 1992, and submitted to your agency on June 2, 1992. Subsequently, the project was coordinated with your agency and the N.C. Wildlife Resources Commission (WRC). The WRC reviewed the project based on the information provided, and your agency issued Regional General Permit No. 31 for this project on July 1, 1992. The WRC has notified the NCDOT by letter dated June 23, 1994 that the WRC may be opposed to this project based on an apparent change in the design since our previous coordination. The NCDOT's design for this project has not been significantly changed since the earlier coordination. This letter is intended to discuss the planning and design process for this project and clarify any points of confusion. The existing bridge over Bairds Creek was constructed in 1959, with subsequent renovations. It needs to be replaced due to its deteriorated condition. This replacement must be implemented according to modern standards for roadway and bridge design. The recommended improvements will include improved roadway approaches extending about 100 feet south and 300 feet north of the bridge. A 24-foot pavement with 8- foot graded shoulders is to be provided on these approaches, in accordance with modern standards. This will require widening the roadway since the existing roadway has a 16-foot pavement with 3-foot shoulders. This improvement is required for safety purposes regardless of the structure design selected, and was discussed in the.CE document. The CE document also mentioned several alternatives for the bridge replacement structure. The document proposed a 3 barrel reinforced concrete box culvert. However, the document also discussed the potential adverse effects of culverts on fish movement. It specifically stated that a bottomless culvert would be considered for this project. Should this design not be feasible, then the proposed 3 barrel culvert would include a low flow notch to accommodate fish passage. These considerations are consistent with the W'RC's preference for spanning structures, as expressed in their comments on this project dated June 12, 1992. Upon further investigation, it was determined that a bottomless, spanning culvert is feasible at this location. It is proposed that the bridge be replaced with a prefabricated single-cell, bottomless culvert, 24 feet wide and 7 feet high. This culvert will have to be 87 feet long to extend under the improved roadway. Construction of this culvert will not require direct disturbance of the existing streambed. The footings will be constructed in bedrock on the existing stream banks. Use of this type of culvert will reduce actual construction time, and eliminate the need for work directly in the stream during culvert construction. The design for this bridge replacement is constrained by several important factors. Immediately northeast of the existing bridge, NC 194 intersects Mast Gap Road (SR 1117). Consideration must be given to providing adequate sight distance for motorists at this intersection, and for allowing an intersection design that meets modern standards. Just north of this intersection, there is a steep hillside currently covered with mature forest. South of NC 194, the project is constrained by Baird's Creek, the creek floodplain, and a bridge to a residential development. Consideration must also be given to the improved roadway approaches, a proper roadway alignment, and cost. The NCDOT has considered all of these factors in its proposed design. The CE document evaluated two alternatives for the location of the new culvert. The NCDOT is still proposing to construct the alternative recommended in the CE. The design of this alternative has not significantly changed since the CE document was distributed. However, better information is available regarding the impacts of each alternative. The advantages and disadvantages associated with each alternative are summarized below. Alternative 1 (Recommended) The first alternative involves construction of the bottomless culvert at the same location as the existing bridge. Traffic would be maintained on-site with a temporary detour structure (two @ 72" corrugated metal pipes) located immediately west of the existing structure. The centerline of the roadway will remain in approximately the same location as the existing condition. However, the new roadway limits will be widened both to the north and to the south to accommodate the required improvements. Fill will also be needed along NC 194 east of the bridge. This fill will be placed in the floodplain of Bairds Creek between the existing roadway fill and the creek. This fill is needed to accommodate the widened roadway and to straighten the NC 194 alignment, which will improve sight distance at the SR 1117 interchange. This fill slope can be stabilized using vegetation. According to design studies, the fill in the floodplain will have no measurable effect on flood levels in the project area because the size of the culvert has been designed to convey flood stage streamflow. The major adverse impact of this alternative results from the temporary detour, as was discussed in the CE document. These effects will be minimized in several ways. The pipes used for the detour wil"1 be placed on grade with the stream bottom. These pipes and associated fill can be removed and the area returned to natural conditions after construction is completed. Stringent erosion control measures and Best Management Practices (BMP) will be enforced during the life of the project. The NCDOT's Sedimentation Control guidelines will also be implemented. Alternative 2 The second alternative would require replacement of the bridge with the same culvert design on new location just west of the existing structure. Traffic would be maintained on the existing structure during construction. The existing bridge and its approaches would be removed after project completion, and graded to natural elevations. The CE document identified a permanent loss of vegetation using this alignment, due to its use of new location. The document also indicated that this alternative has a significantly higher cost than the recommended alternative. An additional adverse impact has been identified with Alternative 2 since the planning document was completed. This alternative would accommodate the relocated roadway and correct its sight distance problem by cutting back the hillside.to the northeast of the interchange. This would involve permanently removing the existing trees and a costly rock cut. This cut slope would leave bare rock permanently exposed. Some type of restraint system will need to be used to prevent rock fall onto the roadway. Although this rockfall could be minimized, this cut could not be effectively stabilized to prevent sedimentation. Alternative 1 was recommended in the CE document because the construction costs and environmental impacts were expected to be lower as compared to Alternative 2. This position is further supported by the impacts from the cut slope required for Alternative 2, which were not assessed in the document. Alternative 1 also provides an acceptable design according to current standards. The NCDOT has given full consideration to environmental impacts associated with this project. Attempts have been made to minimize these impacts where possible. These measures have included restricting fill slopes, restricting construction limits to avoid significant natural features, and careful attention to erosion and sedimentation prevention. It is the NCDOT's position that this design reflects the least damaging, most practicable alternative for this project. It is also the NCDOT's position that this design is not a significant departure from the design presented in the CE document and permitted July 1, 1992. This information is also being provided to the N.C. Wildlife Resources Commission and the N.C. Division of Environmental Management to clarify any confusion concerning the NCDOT's proposal. It is not anticipated that a modification to the existing General Permit 31 issued for this project will be required. Please review this information for consistency with existing permit authorization. If you need any additional information, please call Gordon Cashin (919) 733-3141. Sincerely, B.J. n, PE Assistant Manager Planning and Environmental Branch BJO/gec cc: Steve Chapin, COE, Asheville David Cox, NCWRC Stephanie Goudreau, NCWRC Joseph H. Mickey, Jr., NCWRC John Dorney, Division of Environmental Management W. E. Hoke, PE, Division 11 Engineer Barry Jenkins, PE, Preconstruction Kelly Barger, PE, Project Management Don Morton, PE, Design Services A. L. Hankins, PE, Hydraulics Unit T- ?7(%p?-'-/y/•r-? ry 'TAIAKE '7d7N.'/'? ?. ?i{/') -?Tf `. -]. !701 `1 ?C? ELEY. 557A .'t?• / UK KNO& R- svCKEYS KHOll't•J ?1? 3'f a - RICH AtTNO , ELEV. SSSS \ !!! ELEV. 4,100 MOb•I 7 ; Me RrT7t0 I ?71 '• • ^ w : GM l .. IT00 •x) 1139 I 0?2 Mia MM- /?_:: , - ^ J 1701 ! 'r•` 1 VOey l., o N_l? 1770 \ -?r ?• a/. C MIN. T L2? ` ^•' !]11 ?` .?` ! ?' 1]19 112 :° RIH I. ?-/?`e - h ' 1719 BEV.5372 •,1191 'A Lr X11` 1]91 1 f \ •1? 1777 ' • ' ,` •> e ?I7! ! e L70t 6 1 n s li14 'r^ tp1. ??0v (-•teaT \ 1797 1709 n Etntl 114! li A POTATO LI 3.0 in7 1141' 1391 HILL 1104 I 1-0 170. $?ytr • 1 .i! 1 1797 .Y 0••,: •0 ?.e 'O Mml? EII ,tdM ?7, 1779 7°s t).o 171] yry aIllt L71L? I•or,o ; 17W °f 170f 1 ? ?7r7 ] ?_ 1717 '?. 'y\ 'J) q!! ° } 1711 v 1791' ? 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NORT11 CAROLINA DEPARTMENT OF T'RANSPORTATHON +r Glove' + OeZp ap • DIVISION OF EIIGi1?VAl"S Done wnbu IN t e 6 7 Noy _%?j Beech % Mountam ,HAY 9 Derr Fat S PAkK 1' ?^ 1° • Pur •S, at •.1 millers WATAUGA COUNTY He It Ill, Cruc S reek 1 , fear • ear a9ner even is Na lkesbot rk Sue !k• Dells •;' S IT IS . 1 O . erry 3 7 Dumal 7 r a?u .? lJ _ Blowing Roca &1751201 (B-2178) 396. 21 / ?l\O A . y ' G....A•rA.r ? 17 - -,?,r. ? LL • ?I 1 1 S `_ t ! r 16 °.e. JV? ` erauson ?U Jllor ewlan0 a rp?'rrlle?J uplon Ov REPLACE BRIDGE NO. 45 ON NC 105 16 B v *1 'meof8 YF )Globe fl) LL;? \ n 6 --- OOrn - N r9ssnor ! FOR. + 90 fO ( 68 -Palters -' SCALE AS SHOWN moM 11 N ;?Cdee ? R ,/C A 7 L D 1 E ( ALEXAND' 0111 Idat"\ 1 I +Tarr HS Ca\tts.d valmea SHEET OFJ JULY 1993 + Lenoir in 90 .7.ru.a.....Lrddal- -- ?'/.IS?CI?? ?3G1 boDS II ., II II ? . ?'' S?\\\ 11 11 -? 117 I I /S 1 16 i I i CLASS T r"\p iZpP o- / /\ LfZ\o( Cr?P I / / / \ \,-'ODDS I ?? J J \ PR?t fi??N"C \Gl? L SCALE . NOIIT11 CAIZOI.INA DEPARTDIEN.r OF TRANSI'ORTATIION DIVISION OF HIGHWAYS WATAIGA COUNTY 8.1751101 (6-2178) REPLACE BRIDGE NO. 45 ON NC 105 SCALE AS SHOWN SHEET _OF_± JULY 1994 - ? 2670- - PRoPas?o 2660- - - P I 15 + 3162 / y, ?Rcvu? ELEV = 2660.33 VC 400 Exs-???? 2650- G I - 0.8894 a?,oc G2 + 6.5905 13+00 14t00 15+00 - L DET 12670"- ED - - - - - p>=-?ut.?P. G 0.7207x, 2660 ?? / IN, GRou? ? / 2650 10+00 1 1 +00 12+00 NORTH CAROLINA DEPARTMENT OF TRANSPORTATHON DIVISION OF HIGHWAYS WATAUGA COUNTY 8.1751201 (13-2178) REPLACE BRIDGE NO. 45 ON NC 105 SCALE AS SHOWN SHEET 3 OF 14 JULY 1994 100, LT 1 vu' KT. SIN 1a+5o -L-oft ?A 14+94-L- a- 7Y Ww a4')( -7' slit-Zrl G-7' tJ PCf UP-AL Qo i b(A Cei ELEV, a(o(,I.S3 5Vr-W, (,o4° E?iY rJG NA'?(rfLAt. N j tJoR(ti?L V PcTcfL SvE?t?C? 2670/ a)DD 0' ? (. -) rL, a - - - 2660 sa:Tl u1J A - K - 2650 1 NORTH CAROLINA DEPARTMENT OFTRANSPORTATHON DIVISION OF HIGHWAYS WATAUGA COUNTY 8.1751201 (B-2178) REPLACE BRIDGE NO. 45 ON NC 105 SCALE I = 50/ SCALE AS SHOWN SHEET gOFA JULY 1994 STATE OF NORTH CAROLINA DEPARTMENT OF TkANSPORTATION JAMES B. HUNT, JR. DIVISION OF HIGHWAYS R. SAMUEL HUNT III GOVERNOR P.O. BOX 25201, RALEIGH, N.C 27611-5201 SECRETARY July 27, 1994 District Engineer Wilmington District Corps of Engineers Regulatory Branch Post Office Box 1890 Wilmington, NC 28402-1890 ATTENTION: Regulatory Unit Dear Sir: SUBJECT: Watauga County, Replacement of Bridge No. 45 over Bairds Creek on NC 194, T.I.P. No. B-2178, State Project No. 8.1751201, COE Action ID No. 199202596. The North Carolina Department of Transportation (NCDOT) proposes to replace the existing bridge over Bairds Creek on NC 194 in Watauga County. A Categorical Exclusion (CE) document was prepared for this project to evaluate environmental considerations. This document was signed by the NCDOT and the Federal Highway Administration on May 22, 1992, and submitted to your agency on June 2, 1992. Subsequently, the project was coordinated with your agency and the N.C. Wildlife Resources Commission (WRC). The WRC reviewed the project based on the information provided, and your agency issued Regional General. Permit No. 31 for this project on July 1, 1992. The WRC has notified the NCDOT by letter dated June 23, 1994 that the WRC may be opposed to this project based on an apparent change in the design since our previous coordination. The NCDOT's design for this project has not been significantly changed since the earlier coordination. This letter is intended to discuss the planning and design process for this project and clarify any points of confusion. The existing bridge over Bairds Creek was constructed in 1959, with subsequent renovations. It needs to be replaced due to its deteriorated condition. This replacement must be implemented according to modern standards for roadway and bridge design. The recommended improvements will include improved roadway approaches extending about 100 feet south n ?. a V J and 300 feet north of the bridge. A 24-foot pavement with 8- foot graded shoulders is to be provided on these approaches, in accordance with modern standards. This will require widening the roadway since the existing roadway has a 16-foot pavement with 3-foot shoulders. This improvement is required for safety purposes regardless of the structure design selected, and was discussed in the CE document. The CE document also mentioned several alternatives for the bridge replacement structure. The document proposed a 3 barrel reinforced concrete box culvert. However, the document also discussed the potential adverse effects of culverts on fish movement. It specifically stated that a bottomless culvert would be considered for this project. Should this design not be feasible, then the proposed 3 barrel culvert would include a..low flow notch to accommodate fish passage. These considerations are consistent with the WRC's preference for spanning structures, as expressed in their comments on this project dated June 12, 1992. Upon further investigation, it was determined that a bottomless, spanning culvert is feasible at this location. It is proposed that the bridge be replaced with a prefabricated single-cell, bottomless culvert, 24 feet wide and 7 feet high. This culvert will have to be 87 feet long to extend under the improved roadway. Construction of this culvert will not require direct disturbance of the existing streambed. The footings will be constructed in bedrock on the existing stream banks. Use of this type of culvert will reduce actual construction time, and eliminate the need for work directly in the stream during culvert construction. The design for this bridge replacement is constrained by several important factors. Immediately northeast of the existing bridge, NC 194 intersects Mast Gap Road (SR 1117). Consideration must be given to providing adequate sight distance for motorists at this intersection, and for allowing an intersection design that meets modern standards. Just north of this intersection, there is a steep hillside currently covered with mature forest. South of NC 194, the project is constrained by Baird's Creek, the creek floodplain, and a bridge to a residential development. Consideration must also be given to the improved roadway approaches, a proper roadway alignment, and cost. The NCDOT has considered all of these factors in its proposed design. The CE document evaluated two alternatives for the location of the new culvert. The NCDOT is still proposing to construct the alternative recommended in the CE. The design of this alternative has not significantly changed since the CE document was distributed. However, better information is 1 available regarding the impacts of each alternative. The advantages and disadvantages associated with each alternative are summarized below. Alternative 1 (Recommended) The first alternative involves construction of the bottomless culvert at the same location as the existing bridge. Traffic would be maintained on-site with a temporary detour structure (two @ 72" corrugated metal pipes) located immediately west of the existing structure. The centerline of the roadway will remain in approximately the same location as the existing condition. However, the new roadway limits will be widened both to the north and to the south to accommodate the required improvements. Fill will also be needed along NC 194 east of the bridge. This fill will be placed in the floodplain of Bairds Creek between the existing roadway fill and the creek. This fill is needed to accommodate the widened roadway and to straighten the NC 194 alignment, which will improve sight distance at the SR 1117 interchange. This fill slope can be stabilized using vegetation. According to design studies, the fill in the floodplain will have no measurable effect on flood levels in the project area because the size of the culvert has been designed to convey flood stage streamflow. The major adverse impact of this alternative results from the temporary detour, as was discussed in the CE document. These effects will be minimized in several ways. The pipes used for the detour will be placed on grade with the stream bottom. These pipes and associated fill can be removed and the area returned to natural conditions after construction is completed. Stringent erosion control measures and Best Management Practices (BMP) will be enforced during the life of the project. The NCDOT's Sedimentation Control guidelines will also be implemented. Alternative 2 The second alternative would require replacement of the bridge with the same culvert design on new location just west of the existing structure. Traffic would be maintained on the existing structure during construction. The existing bridge and its approaches would be removed after project completion, and graded to natural elevations. The CE document identified a permanent loss of vegetation using this alignment, due to its use of new location. The document also indicated that this alternative has a significantly higher cost than the recommended alternative. 1 An additional adverse impact has been identified with Alternative 2 since the planning document was completed. This alternative would accommodate the relocated roadway and correct its sight distance problem by cutting back the hillside. to the northeast of the interchange. This would involve permanently removing the existing trees and a costly rock cut. This cut slope would leave bare rock permanently exposed. Some type of restraint system will need to be used to prevent rock fall onto the roadway. Although this rockfall could be minimized, this cut could not be effectively stabilized to prevent sedimentation. Alternative 1 was recommended in the CE document because the construction costs and environmental impacts were expected to be lower as compared to Alternative 2. This position is further supported by the impacts from the cut slope required for Alternative 2, which were not assessed in the document. Alternative 1 also provides an acceptable design according to current standards. The NCDOT has given full consideration to environmental impacts associated with this project. Attempts have been made to minimize these impacts where possible. These measures have included restricting fill slopes, restricting construction limits to avoid significant natural features, and careful attention to erosion and sedimentation prevention. It is the NCDOT's position that this design reflects the least damaging, most practicable alternative for this project. It is also the NCDOT's position that this design is not a significant departure from the design presented in the CE document and permitted July 1, 1992. This information is also being provided to the N.C. Wildlife Resources Commission and the N.C. Division of Environmental Management to clarify any confusion concerning the NCDOT's proposal. It is not anticipated that a modification to the existing General Permit 31 issued for this project will be required. Please review this information for consistency with existing permit authorization. If you need any additional information, please call Gordon Cashin (919) 733-3141. Sincerely, B. J. n, PE Assistant Manager Planning and Environmental Branch BJO/gec cc: Steve Chapin, COE, Asheville David Cox, NCWRC Stephanie Goudreau, NCWRC Joseph H. Mickey, Jr., NCWRC John Dorney, Division of Environmental Management W. E. Hoke, PE, Division 11 Engineer Barry Jenkins, PE, Preconstruction Kelly Barger, PE, Project Management Don Morton, PE, Design Services A. L. Hankins, PE, Hydraulics Unit f u. r CII„on I *Tel erfon+ ?:. a.... V IC I N I T Y M AP BI f GestonSmet ;Ridge 121 1ipOr1 I lawel Svrl gf Ilro. o-,9, .•,`?-' t5•.. 88 West )ellerson .N? yo-, ga 10 5, n. Ind 5^o-' _ Et ..' ill l no, ?FO ad \ Baldwm. r G..dale IS Son s p 1 A T U G A Tod4 Fleetwood Id, I S 6 Hallf M ..,wood W ) L NORTH CAROLINA DEPARTMENT OF TRANSPORTATHON ar Gro.e t • Delp all wnear s May DIVISION OF HIGHWAYS Z [ a f Done ? 0 Beech a - *_ r?lo .n..., r..l L- 6 I \! a ! MounUm I. ,NtY • T • v? X? Cruc < (S ' tµR `_ - • ' '^' Derr ai Mdlers? WATAUGA COUNTY e .He ton a, H -_ ` 471 Purlear reek No; Ik f?.. $u a alline )., Is Is f?C J I r !(v IS ' r reekDor errY lJ Y T ouunIal a 1 , ' eW .' Q , , _, 8.1751201 (B-2178) /l svs. 11 81 as Rock Q\ Bey '? 4 G.Ir.n.. % I, / r 1 Ferguson ewland a ,pyme Upton • s \ ` 0\/ \ V S REPLACE BRIDGE NO. 45 ON NC 105 ?(y' /., YF iGlob* jj) 16 Boomer T 1 Ineols Q Itl,. \ II S •--- J ossnor FOR. 90 Q rTFdte not - -Patters ' +- /•-14n[s-Leek ?__' 6 ?- 1, SCALE AS SHOWN a ong JC A q L D E ( ALEXAND! nvJle Idle-\ I }Tayl "'"• Its Colietlfnl V.I. ea e? r Fi'?*1 ' ! SHEET L OF. JULY 1994 n .6&.* +Lenoir 90 ? Ai?lordM? 1 1 --??T ?--- 1+ --- ? ..?rn. •.,,.../Hidtlt 1. O I 1 ?j 4 5 MILES J R\L1h of= / EY.I :??Ci ?? X3(;1 ??? ?i?P ?1pbDS ?? II ', I I 11 ? ??? S?1\\ II it 47 - I I /S 1 I CmP ? I 1 /6 i / `tom I ? ? I A 4'- ?I / / / F`?P iZAP l.) t-`cT'.n fug`. l3 cn`To c.-. NORTH CAROLINA DEPARTDIENTOFTRANSPORTATIION \C -? l ?1A{ DIVISION OF IIIGIIWAYS -I-..L _ / Exls-t1nlG 0 \ L;(Z\oC v {21? Ct= 1?A`( tOGE cf= PAvc WATAUGA COUNTY 8.1751201 (8-2178) REPLACE BRIDGE NO. 45 ON NC 105 SCALE SCALE AS SHOWN RANK= I - 50', SHEET =OF? JULY 1994 J 260= - L- 2660 2650 4RoAa?-ez G?Ap? _ _ ? ? ? NQrcut?a? PI 15 + 3162 y, ELEV = 2660.33 VC 400 G I - 0,8894 G2 + 6.5905 13+00 14t00 15+00 - L-DET 2670 QRopclSEt? of-???. Cc l 0.7207X, ? )t 2660 2650 10 t00 1 1 +00 12+00 NORTH CAROLINA DEPARTMENT OF TRANSPORTATHON DIVISION OF HIGHWAYS I WATAUGA COUNTY 8.1751201 (B-2178) REPLACE BRIDGE NO. 45 ON NC 105 SCALE AS SHOWN SHEET 3 OF_q JULY 1994 4 100 t_T lOV fZ'f. SIP, 1a+5o -'?fA 14+94 - L- Wvp a4' )c -7' l,`7' h1ATLk-fl t lQtg(i pfd C? ELEv. -a (,(,I.S-s 5v'r-44 (04' E??Y ?JG C?EL?oGE NA"tll?f?AL N rJow*??L V Pc'rtf? Sv?K?AC? S?C"f l u?1 A - ? SCALE i = 50 NORTH CAROLINA DEPARTMENT OFTRANSPORTATHON DIVISION OF HIGHWAYS WATAUGA COUNTY 8.1751201 (B-2178) REPLACE BRIDGE NO. 45 ON NC 105 2670 Woo rt.-Q(,6a.0' (?s0 iEl- alouo.5' -r ' - - - 2660" SCALE AS SHOWN SHEET q OF . - 2650" JULY 1994 NC 194, Bridge No. 45 over Bairds Creek, Watauga County, State Project No. 8.1751201 Federal-Aid Project BRS-1451(6) TIP Project B-2178 V CATEGORICAL EXCLUSION U. S. DEPARTMENT OF TRANSPORTATION FEDERAL HIGHWAY ADMINISTRATION AND N. C. DEPARTMENT OF TRANSPORTATION DIVISION OF HIGHWAYS APPROVED: , 5q 2jja Dat L. J. Ward, P. E., Man ger ?klanning and Environmental Branch S?iz G Date Nich s L. Graf, P. E. P)gDivision Administrator, FHWA NC 194, Bridge No. 45 over Bairds Creek, Watauga County, State Project No. 8.1751201 Federal-Aid Project BRS-1451(6) TIP Project B-2178 CATEGORICAL EXCLUSION May, 1992 Documentation Prepared in Planning and Environmental Branch By: 6(J'w1a Ed Lewi s Project Planning Engineer /W/ay Af el Wayne Elliott Bridge Project Planning Engineer H. rank Iin Vic , P.'E. Assistant Manager of Planning and ,?tttttttt???? A CA Unit Head ? t SE r.* 14 p;' NOM Environmental ???''•9'LM `??.?.•'? ?'• attttltt ?'` z Z y'z NC 194, Bridge No. 45 over Bairds Creek, Watauga County, State Project No. 8.1751201 Federal-Aid Project BRS-1451(6) I. D. No. B-2178 Bridge No. 45 has been included in the Federal-Aid Bridge Replacement Program. The location is shown in Figure 1. -No substantial environmental impacts are anticipated. The project has been classified as a Federal "categorical exclusion." I. SUMMARY OF ENVIRONMENTAL COMMITMENTS All standard procedures and measures will be implemented to avoid or minimize environmental impacts. No special or unique environmental commitments are necessary. A nationwide permit is likely to be applicable. Concurrence from NCWRC is needed since the project is in one of the 25 trout counties. A 401 water quality permit will be required. There are no jurisdictional wetland plant communities located in the study area. Best management practices will be utilized to minimize these impacts. Consideration will be given to a bottomless culvert during the permitting and design phase. II. SUMMARY OF RECOMMENDATIONS Bridge No. 45 should be replaced at the existing location with a cast-in-place reinforced culvert as shown by Alternative 1 (Figure 2). Only minimum approach work is required to tie the culvert to existing approaches. Preliminary hydrographic studies indicate that a triple 9' x 7' box culvert should be provided. Traffic will be maintained on-site by a temporary detour structure located immediately west of the existing structure. Estimated cost, based on current prices, is $ 395,000 which includes $ 95,000 for the right-of-way costs. The estimated cost of the project, as shown in the Transportation Improvement Program, is $ 290,000. III. EXISTING CONDITIONS NC 194 is classified as a rural major collector in the Statewide Functional Classification System and is part of the Federal Aid System (FAS 1451). NC 194 is also considered to be a North Carolina Scenic Byway. The North Carolina Scenic Byways Program brings attention to the beautiful countryside and historic areas in North Carolina. The route runs through Banner Elk and Boone and serves the outlying rural area north of Valle Crucis. 2 In the vicinity of the bridge, NC 194 has a 16-foot pavement with 3-foot shoulders (see Figure 2). Vertical alignment is flat. The horizontal alignment consists of curves on both approaches in excess of 29 degrees. The structure is situated 9 feet above the creek bed. Posted speed limit is 55 MPH. Land use in the immediate vicinity of the bridge is woodland. Development in the surrounding area is residential. The-current traffic.volume of 1200 vehicles per day (vpd) is expected to increase to approximately 2000 vpd by the year 2011. The projected volume includes 1% truck-tractor semi-trailer (TTST) and 3% dual-tired vehicles (DT). The existing bridge (see Figure 3) was constructed in 1959. The superstructure consists of a timber deck with I- beams on rubble masonry abutments. The substructure is composed of rubble masonry caps. Overall length is 25 feet. Clear roadway width is 19.2 feet. The posted weight limit is 20 tons for single vehicles and 29 tons for trucks with trailers. Bridge No. 45 has a sufficiency rating of 34.2 compared to a rating of 100 for a new structure. Two accidents were reported on Bridge No. 45 during the period from July 1, 1987 to June 30, 1991. Both accidents occurred at the intersection of NC 194 and SR 1117. Six school buses cross the studied bridge daily. IV. ALTERNATIVES Two alternative methods of replacing Bridge No. 45 were studied as follows: Alternative 1 (Recommended) will involve replacement of the bridge along the existing roadway alignment with a cast-in-place reinforced concrete box culvert (3 @ 9' x 7'). Traffic will be maintained on-site with a temporary detour structure (two @ 72" corrugated metal pipes) located immediately west of the existing structure. Environmental impacts as a result of constructing Alternative 1 are less than under Alternative 2. Alternative 2 would involve replacement of the bridge with a culvert on new location just west of the existing structure. The replacement structure would be a cast-in-place box culvert (3 @ 9'x7'). Traffic would be maintained on the existing structure during construction. Alternative 2 would result in a greater loss of plant species. "Rehabilitation" of the old bridge is not feasible due to its age and deteriorated condition. The "do-nothing" alternative would eventually necessitate closure of the bridge. This is not desirable due to the traffic service provided by NC 194. 3 V. ESTIMATED COST Estimated cost of the studied alternatives is as follows: (Recommended) Alternative 1 Alternative 2 Structure & Approaches $ 255,000 $ 337,000 Structure Removal $ 4,000 $ 4,000 Temporary Detour $ 16,000 Engineering & $ 25,000 $ 34,000 Contingencies Right-of-Way, Utilities $ 95,000 $ 71,000 Total $ 395,000 $ 446,000 VI. TRAFFIC DETOUR During the construction period, maintenance of traffic at the studied bridge site is necessary. Otherwise, traffic would have to be detoured along existing unpaved secondary roads with poor vertical and horizontal alignment and over bridges with poor sufficiency ratings. No acceptable detour route was found due to the excessive length of additional travel. In view of these existing factors, it is clear that traffic should be maintained at the existing site during construction. VII. RECOMMENDED IMPROVEMENTS Bridge No. 45 should be replaced at its present location with a cast-in-place reinforced concrete box culvert. According to the preliminary hydrographic study, a triple 9' x 7' reinforced concrete box culvert will accommodate the flow of Bairds Creek at this point. The structure dimensions may be increased or decreased as necessary to accommodate peak flows of Bairds Creek as determined by further hydrographic studies. Alternative 1 is the recommended alternative because construction costs and environmental impacts will be lower as compared to Alternative 2. Alternative 1 (Recommended) has a higher design speed than Alternative 2. Also, the sight distance problem for motorists looking north along NC 194 from SR 1117 (Mast Gap Road) will be improved more easily under Alternative 1. Therefore, it is recommended to improve the subject project as outlined under Alternative 1. The recommended improvements will include about 100 feet of improved roadway approaches. A 22-foot pavement with 6-foot graded shoulders should be provided on the approaches. The elevation of the new crossing is expected to be approximately the same as the elevation of the existing bridge. 4 VIII. ENVIRONMENTAL IMPACTS The project is located north of Valle Crucis in Watauga County in the Mountain Physiographic Province. The project is located in a rural setting. Several homes are near the project site. The study area is forested and disturbed. Topography in the area ranges from gently to strongly sloping. Elevation ranges from 2660' to 2700' above mean sea level (amsl). Topography in the study area is gently sloping adjacent to Bairds Creek and strongly sloping northwest of the bridge/creek crossing. A disturbed scrub/shrub upland community is located adjacent to the creek at the existing bridge and to the west of the bridge. This community is open and supports few trees. Weedy grasses and shrubs predominate adjacent to the creek. Observed plants include blackberry (Rubus sp.), smooth sumac (Rhus 9la-bra), various composites and grasses. Several trees, including tulip poplar (Liriodendron tulipifera) and northern red oak ( uercus rubra), are located along the stream banks. A maintained lawn exists to the south and west of the bridge. The hillside located between the road and the hardwood forest community is disturbed and is also dominated by blackberry. A hardwood forest upland community is located immediately west and north of the bridge. The area is strongly sloping and the elevation increases from the roadway to the hardwood forest community. The ground is very rocky. Several exposed boulders are located uphill of the study area. The dominant canopy species are deciduous hardwood trees. A number of oaks such as northern red oak, white oak ( uercus alba) and southern red oak ( uercus falcata) are found in this community. Additional tree species include Pignut hickory (Cater a_ labra), red maple (Acer rubrum) and cherry birch (Betula lenta). The understory is dominated by thorn (Crataegus sp.). Due to seasonality, the ground cover was not observable at the time of the field survey. Remnants of last seasons' growth include squaw-root (Conopholis americana). No wetland plant communities are located in the study area. Only Waters of the US will be impacted by the proposed project. Construction will impact Disturbed Scrub/Shrub and the Hardwood Forest communities. Plant community impacts are presented in Table 1. These estimates are preliminary and may change with final design. Table 1. Summary of Anticipated Plant Community Impacts Plant Community Alternative 1 Alternative 2 Disturbed Scrub/Shrub 0.3 0.3 Hardwood Forest 0.1 0.1 TOTALS 0.4 0.4 Note: Estimated impacts are based on 60' right-of-way width. Values shown are in acres. 5 The project impacts a disturbed area. A small amount of the Hardwood Forest community will be impacted from proposed construction. Potential impacts include vegetation loss and regrowth of species adapted to a disturbed environment. Construction of either alternative will result in similar vegetation losses, but construction of Alternative 1 (Recommended) will result in a temporary vegetation loss since proposed construction consists of replacement on existing location and construction of a temporary detour. Construction of Alternative 2 consists of permanent vegetation losses since construction is proposed on new location. The existing facility would be removed and re-vegetated. It is recommended that stringent erosion control measures and Best Management Practices should be enforced during the life of the project. Sedimentation Control guidelines should be implemented. It is also recommended that vegetation removal should be minimized. The existing facility (Alternative 2) should be graded to normal elevations and re-established with native vegetation. The following avian species may be found in the study area: red-tailed hawk (Buteo 'amaicensis), American kestrel (Falco sparverius), mourning dove (Ze a da macroura , red-headed woodpecker (Mel?anerpes er throcephalus), raven (Corvus corax), cedar waxwing (Bom y cilla ce rorum) and American goldfinc (Carduelis tristis). Anticipated amphibians and reptiles in the study area include: seal salamander (Desmognathus monticola), mountain dusky salamander (Desmognathus ochro haeus), three-lined salamander (Eurycea guttolineata), redback salamander Plethodon cinereus), slimy salamander (Plethodon lutinosus), southern red back salamander (Plethodon serratus , mud salamander (Pseudotriton montanus), spring peeper (Hyla crucifer), r), green frog (Rana clamitans); eastern fence lizard (Sceloporus undulatus), five-lined skin (Eumeces fasciatus), southeastern five-lined skink (Eumeces inexpectatus , ringnec sna a (Diado his punctatus), queen snake (Regina septemvittata) and eastern ribbon snake (Thamnophis sauritus). Several mammals may inhabit the study area. They include the water shrew (Sorex alustris), least shrew (Cryptot?is Parva), star-nosed mole (Cond lu-ra cristata , eastern cottontail (Sylvilagus floridanus), woodchuck (Marmota monax), pine vole (Microtus pinetorum) and the raccoon (Procyon lotor). Recent fisheries information is not available for Bairds Creek according to NCWRC. The potential exists for rainbow trout (Oncorhyncus mykiss) and brook trout (Salvelinus fontinalis) since these species have been found in nearby streams. Bairds Creek is listed in a 1968 publication (Fish) as a small stream with limited fishing importance. Anticipated fish species in Bairds Creek include suckers (Catastomus spp.), warmouth (Lepomis ulosus) and rock bass (Ambloplites rupestris). 6 Replacement of the bridge with a culvert might hinder normal fish movement and stream dynamics may be altered. The proposed culvert will divide the stream into three separate channels and may form a barrier to the migration of certain aquatic species. Construction at Bairds Creek may increase siltation and sedimentation to the creek. These potential impacts may reduce the number of sensitive species, including filter feeders and nonmobile organisms in Bairds Creek. Construction of Alternative 1 (Recommended) is more desirable than construction of Alternative 2 since Alternative 1 impacts are temporary. The temporary detour or permanent roadway (new location) will impact an area with strong slopes. Construction in this area may increase erosion and siltation. Installation of a culvert designed with no floor slab or a bridge that spans the entire stream width would limit the impacts to the creek. One of these designs should be considered during the design and permitting phase. If a conventional culvert is used for bridge replacement then it should be placed at least 12 inches below the stream bottom (for fish movement). A low flow notch will be cut into one cell of a multi-celled concrete box culvert, and deflectors will direct water into this cell during low flows. If pipes are used for temporary detour construction, then they should be placed on grade with the stream bottom in order to minimize the impacts on the stream. Placement of a culvert with no floor slab that spans the entire creek would reduce impacts as compared to a standard multi-celled culvert. Stringent erosion control measures and Best Management Practices (BMP) will be enforced during the life of the project. Sedimentation Control guidelines will be implemented. The temporary detour piping and approach fills will be removed and the area returned to natural conditions after construction is completed. Soils information was obtained from the local Soil Conservation Service office in Watauga County. Soils information is provided from a survey completed in December, 1991. Watauga County is currently being surveyed to update soil information. Two soil mapping units are located in the study area. Cullowhee fine-sandy loam and Chestnut-Ashe complex. The majority of the creek floodplain is mapped Cullowhee fine-sandy loam. This mapping unit is found on 0-3 percent slopes and is occasionally flooded. This soil is somewhat poorly drained and has grey mottles in the 12" to 24" layer of the profile. This soil is classified as having hydric inclusions. The Chestnut-Ashe complex is located in areas with slopes ranging from 50 to 95 percent such as the hardwood forest and is very rocky. The Chesnut-Ashe complex is classified as a non-hydric soil. The project is located in the Watauga River Basin. Bairds Creek is a tributary of the Watauga River. The creek is approximately 20' wide in the study area, has a depth of approximately 1' and is fast flowing. The bottom composition varies from boulders to cobble and silt. Best usage classification of Bairds Creek is C (DEM). Best usage recommendations for Class C waters include aquatic propagation and survival, fishing, wildlife, secondary recreation and agriculture. 7 No High Quality Waters, Outstanding Resource Waters or waters classified WS-I and WS-II are located in the study area or within 1 mile downstream. Bairds Creek is not designated a Public Mountain Trout Water by the North Carolina Wildlife Resources Commission (NCWRC). Benthic macroinvertebrate surveys were taken in the Watauga River less than 5 miles downstream of the study area. The bi ocl ass was rated from good to.excellent.. The bioclass is a measure of the taxa richness and the presence of intolerable organisms. Ratings in Watauga River have oscillated in earlier sampling years, but have recently stabilized within the excellent category. Benthic macroinvertebrates are sensitive to very subtle changes in water quality. Non-point sediment sources will be identified and efforts made to control sediment runoff. Strict adherence to BMP's will be followed during the construction phase of the project. Sedimentation Control guidelines will be implemented prior to construction and maintained throughout the life of the project. The culvert should be placed at least 12 inches below the stream bottom (for fish movement). A low flow notch should be cut into one cell of a multi-celled concrete box culvert, and deflectors should direct water into this cell during low flows. If pipes are used for temporary detour construction, then they should be placed on grade with the stream bottom in order to minimize the impacts to the stream. Jurisdictional wetlands as defined by 33 CFR 328.3 are those areas that are inundated or saturated by surface or ground water at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted to life in saturated conditions. Criteria for wetland determinations are described in the "Corps of Engineers Wetland Delineation Manual" (Environmental Laboratory, 1987). Any action that proposes to place fill into these areas falls under the jurisdiction of the US Army Corps of Engineers under the Provisions of the Clean Water Act. Impacts in the study area fall under the broad phrase "Waters of the US". Waters of the US includes, in general terms, navigable waters, their tributaries and associated wetlands. The bank-to-bank surface waters of Bairds Creek fall under this category. There are no jurisdictional wetland plant communities located in the study area. The proposed project will impact the surface waters of Bairds Creek. No jurisdictional wetland plant communities are located in the study area. Bairds Creek is not a designated trout water. A Nationwide Permit 33 CFR 330.5(a) (23) is likely to be applicable. Nationwide Permit 23 approves activities undertaken, assisted, authorized, regulated, funded in whole or in part by another federal agency where that agency or department has determined, pursuant to the Council on Environmental Quality Regulation for Implementing the Procedural Provisions of the National Environmental Policy Act, that the activity, work or discharge is categorically excluded from environmental documentation because it is included in a category of actions which neither individually nor cumulatively has a significant effect on the environment. 8 The project is located in one of the 25 trout counties. Concurrence from the NCWRC is required for projects that occur in these counties. Correspondence with NCWRC has been initiated (see Appendix, A-3). State permits are administered through the Department of Environment, Health and Natural Resources (DEHNR). One state permit that is required is the 401-Water Quality Certification. This certificate is issued for any activity which. may result in.a discharge and for which a federal permit is required. The US Fish and Wildlife Service (USFWS) and the North Carolina Natural Heritage Program (NCNHP) were consulted to locate any occurrences of protected species in the study area. Six federally protected species are listed by the USFWS for Watauga County as of January 30, 1992. These are as follows: Common Name Virginia big-eared bat Carolina northern flying squirrel Spreading avens Mountain bluet Heller's blazing star Blue ridge goldenrod Scientific Name Plecotus townsendii virginianus GG aucomys sabrinus coloratus Geum radiatum Houstonia montana Liatris helleri So idago sphamaea Virginia big-eared bat The Virginia big-eared bat is distinguished by its very large ears, usually 1" or longer. This medium sized bat has brownish fur and is approximately 4" long. The species is widespread in the western United States, but the eastern subspecies is fragmented into several populations. It inhabits caves only. Hibernation sites average 12° C or less. No caves are located in the study area. No impacts to the Virginia big-eared bat will occur. Carolina northern flying squirrel The Carolina northern flying squirrel is a small nocturnal mammal approximately 12" long. It is capable of gliding by means of a membrane that is located along the sides of the body between the fore and hind limbs. In addition, the broad tail aids in gliding. The Carolina northern flying squirrel is distributed in widely scattered areas at high elevations in the transition zone between the coniferous and northern hardwood forests. The study area does not occur at high elevations nor does it support suitable habitat for the Carolina northern flying squirrel. No impacts will occur. Spreading avens This perennial herbaceous plant is a member of the rose family. The flowers are bright yellow and the flowering period is from June through August. It is endemic to balds on high mountains and often occurs on steep mountain faces and narrow ledges. The study area does not support suitable habitat for this plant. No impacts to spreading avens will occur. 9 Mountain bluet This perennial herb has a basal rosette of leaves. The flowers are a bright yellow and the flowering period is from June through September. The Mountain Bluet inhabits areas similar to the spreading avens, high elevation rock cliffs. The study area does not support suitable habitat for this plant. No impacts to the plant will occur. Heller's blazing star Heller's blazing star is a member of the aster family. Flowers occur in clusters and are rarely solitary, blooming late July through August from the top to the bottom of the stem. Flowers are lavender to pink or white. The plant occurs on drier mountaintop cliff edges, in shallow acidic soils, usually on weathered granite above 3500' in elevation. The study area does not support suitable habitat for this plant. No impacts to Heller's blazing star will occur. Blue-ridge goldenrod The blue-ridge goldenrod is an erect perennial herb that arises from a stout rhizome. The yellow flowers are borne in heads and the flowering period is July through August. Three populations are known; two in Avery County and one in Mitchell County. The blue-ridge goldenrod occurs at elevations above 4600' in dry rock crevices of granite outcrops on the high peaks of the Blue Ridge Mountains. The study area occurs well below 4600' and does not support suitable habitat for this plant. No impacts will occur to the blue ridge goldenrod. No records of state protected species are located in the study area according to the NCNHP files. This project is subject to compliance with Section 106 of the National Historic Preservation Act of 1966, as amended, implemented by the Advisory Council on Historic Preservation's Regulations for Compliance with Section 106, codified at 36 CFR Part 800. It is also subject to compliance with Section 4(f) of the Department of Transportation Act of 1966, as amended. In terms of historic architectural resources, there are no National Register-listed or eligible properties located in the area of potential effect. There are no known archaeological sites within the proposed project area. Based on our present knowledge of the area, it is unlikely that any archaeological resources which may be eligible for inclusion in the National Register of Historic Places will be affected by the project construction. There are no publicly owned parks, historic sites, recreational facilities, or wildlife and waterfowl refuges of national, state or local significance in the vicinity of the project. Therefore, the project does not involve any Section 4(f) properties. 10 Since there are no properties either listed or eligible for listing in the National Register of Historic Places in the area of potential effect of this undertaking, no further compliance with either Section 106 of the National Historic Preservation Act of 1966 or with Section 4(f) of the Department of Transportation Act of 1966 is required (see Appendix pages A-1 and A-2). The project is not in conflict with any plan, existing land use, or zoning regulation. No significant change in land use is expected to result from construction of the project. The structure is to be replaced at the existing location. Therefore, the project is exempt from the Farmland Protection Policy Act. Watauga County is a participant in the National Flood Insurance Regular Program. The area of drainage basin for Bairds Creek at the subject location is 3.35 square miles. The approximate 100-year flood plain in the project area is shown in Figure 4. The amount of flood plain area to be affected is not considered to be significant. The project is located within the Eastern Mountain Air Quality Control Region. The ambient air quality for Watauga County has been determined to be in compliance with the National Ambient Air Quality Standards. Since this project is located in an area where the State Implementation Plan (SIP) does not contain any transportation control measures, the conformity procedures of Title 23, Code of Federal Regulations (CFR), Part 770 do not apply to this project. The project will not substantially increase traffic volumes. Therefore, its impact on noise levels and air quality will be insignificant. Noise levels could increase during construction but will be temporary. If vegetation is disposed of by burning, all burning shall be done in accordance with applicable local laws and regulations of the North Carolina SIP for air quality in compliance with 15 NCAC 2D.0520. This evaluation completes the assessment requirements of Title 23, Code of Federal Regulations (CFR), Part 770 and 772 and no additional reports are required. EL/plr WATAGGA COUNTY .fit 2 ` • Zionval, ` ,,"W;AT UGAI (envaod 2 Tod F. ar Grovey H 1 9 ilai OOlle Beech Crs u A v ' o` fain Crucie `? 6 's , KK +K I 05 .4? even 9 Devils 15x "`•? o /? % 64 ?-x _ l 221 Blowing Rock, 4 rov 321 Q / b 1.2 FAP ?/ 1311 PQ CrpP?f ,o : i-? 4 1313 ?? GO>J 1149 1.155 Viwas/ 131 1 1 121 MAST.2 t i 17 21 ~-?2 1.4 GAP 0 X94 .9 `? • 1142 , 4§5 / 7 22 `? - o. 41 1120 i 1115 Rominger BRIDGE NO. 45 111.3 c? 1 .? Cr ? cn C elr J f 29 1122 1166 ROCKY FACE :C-Q ?• Valle Crucis?Q p 1160 1130 1122 _rcfl 1.152 1 Vr t\ 'o- } 1135 5 1132 .3 1112 i 1136 1122 FAS 1131 ? L? 1 134 1112 '` NORTH CAROLINA DEPARTMENT OF TRANSPORTATION DIVISION OF HIGHWAYS PLANNING AND ENVIRONMENTAL BRANCH BRIDGE NO. 45 WATAUGA COUNTY T. 1. P. PROJECT B-2178 FIG. 1 41 !•? ° c ?? - , ?? ?i, ` ¢r4 .2 All el" I y 1:i I li A !J,f w r k.S ALTERNATIVE 2' "sit fl ^r x + x t .11 ?wa. •e • I, • 1 'W.+'i1r X A y w7 4 ?V x'1 - 1 T i i ?w ?r A Y. -tt. ?iYr', s'y`1?.'. ' Pte......, Ak_ VQ 441 V 4 ?S ti ?` i r y? _ .?Ns(s ? W ?{ 1 •4 .- 'SAY S S..t'+aW ? ? J" 4a .. Y VAC v' : t 1 ' ' y Y -}' 1 ? Z S kA e?? +r c, k ?yt ,4 sx' ? 2 ' `a 40 f W 0 0 - y d ? '- ?7; NORTH CAROLINA DEPARTMENT OF TRANSPORTATION A DIVISION OF HIG IWAYS 9 PLANNING AND ENVIRONMENTAL Lrts,n BRANCH BRIDGE NO. 45 WATAUGA COUNTY T. I. P. PROJECT B-2178 0 feet 100 FIG. 2 WATAUGA COUNTY BRIDGE NO. 45 ar. qt, NORTH APPROACH SOUTH APPROACH SIDE VIEW FIGURE 3 .?1 I I 100 YEAR FLOOD LIMITS BRIDGE NO. 45 = ?J 1 I „ • u D CRF?K NORTH CAROLINA DEPARTMENT OP TRANSPORTATION DIVISION OP HIGHWAYS PLANNING AND ENVIRONMENTAL 13TIANCH LIMITS OF 100-YEAR FLOOD 4/92 FIGURE 4 ZONE O ?a STATE North Carolina Department of James G. Martin, Governor Patric Dorsey, Secretary November 20, 1991 Nicholas L. Graf Division Administrator Federal Highway Administration Department of Transportation P.O. Box 26806 Raleigh, N.C. 27611 Re: Replace Bridge No. 45 over Bairds Creek on NC 194, Watauga County, B-2178, 6.503266, GS 92-0037 Dear Mr. Graf: ? y v ural Re*rcc?es m cc?ivor? . j iar> r lives and History rice, Jr., Director On.October 15, 1991, Robin Stancil, Historic Preservation Office, met with North Carolina Department of Transportation (NCDOT) staff for a "meeting of the minds" concerning the above project. We reported our available information on historic architectural and archaeological surveys and resources, along with our recommendations. NCDOT provided project area photographs and aerial photographs at the meeting and for our use afterwards. Based upon our review of the photographs and the information discussed at the meeting, we would like to summarize our concerns regarding this project. In'terms of historic architectural resources, we are aware of no National Register-listed or eligible 'properties located in the area of potential effect. We feel that the one house over fifty years of age in the project area is not a distinctive representative of its type. There are no known archaeological sites within the proposed project area. Based on our present knowledge of the area, it is unlikely that any archaeological resources which may be eligible for inclusion in the National Register of Historic Places will be affected by the project construction. We, therefore, recommend that no archaeological investigation be conducted in connection with this project. Having provided this information, we look forward to receipt of formal notification which will indicate how NCDOT addresses our comments. The above comments are made pursuant to Section 106 of the National Historic Preservation Act of 1966 and the Advisory Council on Historic A - 1 109 East Jones Street • Raleigh, North Carolina 27601-2807 Nicholas L. Graf November 20, 1991, Page 2 Preservation's Regulations for Compliance with Section 106, codified at 36 CFR Part 800. Thank you for your cooperation and consideration. If you have questions concerning the above comment, please contact Renee Gledhill-Earley, environmental review coordinator, at 919/733-4763. incerely, r/ Y David Brook Deputy State Historic Preservation Officer DB:slw cc: ?-C. J. Ward B. Church A - 2 . ? STA)Z ?s J. .Oq Pw. ?• JAMES G. MARTIN GOVERNOR THOMAS J. HARRELSON SECRETARY STATE OF NORTH CAROLINA DEPARTMENT OF TRANSPORTATION P.O. BOX 25201 RALEIGH 27611-5201 May 26, 1992 DIVISION OF HIGHWAYS WILLIAM G. MARLEY, JR., P.E. STATE HIGHWAY ADMINISTRATOR MEMORANDUM TO: Dennis Stewart Manager, Habitat Conservation Program N.C. Wildlife Resources Commission FROM: Gordon Cashin ` Environmental Specialist N.C. Department of Transportation SUBJECT: Watauga County, Bridge No. 45 and •r--idge No. 53.over Bairds Creek on NC 194 B-21781 B-1427) The Planning and Research Branch of NCDOT is currently preparing our final planning document for two bridges on NC 194 in Watauga County. Our Hydraulics engineers have recommended culverts for both bridges, despite our biologist's suggestion that a spanning structure might be preferable., To resolve this issue for our document, I thought it would be best to request your input. The first bridge is designated # 45, and is located at the intersection of NC 194 with SR 1117. We are currently proposing to replace the existing bridge witha three barrel culvert in the same location. This will require a temporary detour.to the north. The second bridge, # 53, is located on NC 194 a mile east of the first bridge. We are currently proposing to replace this bridge in the existing location with a three barrel culvert, and will close NC 194 during construction. Please give us some input on the type of structure your agency would prefer for these two bridge projects. If you need any additional information, please give me a call at (919) 733-9770. cc: Ed Lewis ? Joe Mickey, NCWRC A-3 An Fnual Oooortunity/Affirmative Action Employer