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HomeMy WebLinkAbout20030164 Ver 1_COMPLETE FILE_20030213D 0? wArFR QG r Michael F. Easley Governor William G. Ross, Jr., Secretary Department of Environment and Natural Resources Alan Klimek, PE Division of Water Quality March 17, 2003 Mr. John Vilas E'nv Consulting Services 3764 Rominger Road Banner Elk, NC 28604 Subject: Stream Restoration/Enhancement Laurel and Worley Creek Watauga County, NC DWQ# 030164 Dear Mr. Vilas This Office is in receipt of the plans for the stream restoration projects of approximately 1420 feet of Laurel Creek and 490 feet of Worley Creek in the Watauga River Basin originally submitted to this Office on February 13, 2003, and revisions received March 14, 2003. DWQ Staff reviewed the plans and determined that stream restoration and/or enhancement would be achieved. The stream impacts. associated with the project may proceed without written approval from the Division. Please be advised that seven copies of a complete, formal application and a $475.00 fee is required for projects intended for compensatory mitigation credit (see General Certification No. 3353, issued March 18, 2002). Any request for mitigation credit shall be addressed under separate cover. If you have any questions regarding this matter, please contact Mr. Todd St. John at (919) 733-9584. L)n o R. Dorney We lands Unit Supe isor cc: Mr. Todd St. John, Wetlands Winston Salem Regional Office File A 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) f11f1' * 49oC /..4. n.. n\ non 7,a CC77 /{nv\ L.H. •//I.nn nnr n?nin -- ..n /nn..rniln n.ln/ E'nV Environmental Consulting Services Inc. March 13, 2003 'Fodd St. John NC DENR DWQ 2321 Crabtree Blvd. Parkview Building Raleigh, NC 27604-2260 RE: Laurel Creek Stream Restoration Project DWQ Project # 030164 Response to Comments Dated 2-18-03 Dear Todd: 3764 Rom inger Road Banner Elk, NC 28604 Ph/Fax: 828-297-6946 e-mail: wccjv@skybest.com Attached are responses to comments, please let me know if you have any questions or require additional information. We hope to go to construction on this as close to April 15 as possible. Thanks for your help and input on this. Sincerely, John C. Vilas President, E'nV Environmental Consulting Services Inc. WETLANDS/ 401 GROUP MAR 14 2003 WATER QUALITY SECTION NO03SAinvul -11', £OOZ t I PvtA dnm * / SONY-0M Laurel Creek Stream Restoration DWQ Project No. 030164 Watauga County Response to comments provided by DWQ dated 2-18-2003 Laurel Creek Issues: 1. Reference streams: In addition to the two Laurel Creek reaches (Above Project and Near River) reported in the application there were additional sources of reference data used to develop the proposed design. Most notably are the Craig Branch reach surveyed by Dan Clinton and a mini regional curve developed for the Laurel Creek subbasin of the Watauga River Basin. The mini regional curve was generated from several reaches from Laurel and Worley Creeks as well as the Watauga and Elk River gages. The Laurel Creek - Above Project reach is located immediately upstream of the proposed project reach. The Laurel Creek - Near River reach is located almost 2.5 stream miles downstream of the project reach near the confluence with the Watauga River. 2. Pool to Pool spacing on Laurel Creek: Mean P-P spacing to Wbkf ratio of 3.6 was initially proposed. This value was based on the Craig reference reach as well as the hybrid B/C nature of the proposed channel. The proposed channel has an average slope of 2.5% but an entrenchment ratio of greater than 3 and a very accessible floodplain. Several long pools skewed the ratio even more to the high side. In response to your comment we have taken another look at this and agree that decreasing the P-P spacing would be prudent. Without changing overall pattern we have adjusted the profile and added additional cross vane structures such that we will have numerous small structurally controlled pools intermediate to the larger pools at meander bends. The changes result in a new P-P/Wbkf ratio of 2.2. 3. Sediment Transport: The D50 and D100 from the pavement and bar/subpavement samples used in the calculations were based on multiple pebble counts performed in different segments of the project reach. Notwithstanding the pebble counts, visual evaluation of available sediment indicated that we should design a channel with extra energy because of an abundance of much larger (300 to 400 mm) clearly mobile particles in several areas of the channel. We were concerned that if the channel lacked this additional energy we could have trouble moving delivered sediment during larger floods. Also because we have designed a B-channel with a high entrenchment ratio we do not expect to see much increase in depth and energy during greater than bankfull events and we wanted to make sure there would be sufficient energy during these events. Given the rationale for a high-energy channel, we will enhance stability through the use of very large grade control cross vanes with deep footers. We already have the rock on-site for this project and the typical boulder is 900 mm across the intermediate axis and weighs approximately 4 tons. We have on-site approximately 1200 tons. Using rock of this size with deep footers will insure that we can maintain grade at control structures placed at the head of every riffle. Worley Creek Issues: 1. Pattern Issues: Regarding the comment on meander width ratio and also the discrepancy between proposed and reference meander length ratios, we note that this is a priority two project and the decision was made to sacrifice ideal pattern for the sake of preserving the existing channel bed and minimizing the disturbance to existing habitat. The initial submittal shows a substantial amount of pattern realignment, most of this has been eliminated (see revised plans). One reason for this is during a field meeting with several NC WRC representatives, they recommended this scaled back approach due to the Brook Trout present in Worley Creek. Concerns over cost overruns for the total project have also provided encouragement for scaling back this phase of the project. Basically the approach for the Worley Creek reach will be to lay back banks to provide a bankfull bench, install rock cross vanes to correct bedform sequence, soften one meander bend, install rock vanes and root wads in bends, and revegete the riparian zone. We are leaving the channel bed as is except for using the cross vanes to flatten meander bends into pools and steepen straight sections into riffles where needed. In redrawing the proposed planview to reflect this scaled back approach we found that changes to the profile were also necessary as stationing and stream length had changed. The P-P spacing is still below that suggested by the reference reaches however this is a consequence of working with the existing pattern. Through the use of cross vane/grade control structures we have increased the spacing slightly over the existing condition. 2. Sediment Transport Issues: The sediment transport calculations for both the existing and proposed conditions as well as the plots for the pavement and subpavement pebble counts are included in this submittal. The results from the existing condition calculation indicates a slight degrading condition that perhaps has contributed to the incised condition of the reach. The calculation for the proposed condition indicates a stable to slightly degrading condition. We view this favorably as we can control channel mean slope and facet slope with proposed grade control structures. The Sediment Transport Validation calculation and Shields Diagram analysis indicates that the channel may slightly lack energy, however Shields is not considered to be as accurate in this range. In summary we feel that since these two calculations closely bracket our target condition we are likely to be very close to the proper channel dimension and profile. Laurel Creek Design Reference Parameter Spreadsheet Reach Name Laurel Creek above project Laurel Creek near River Existing Condition Laurel Creek Project sta. 2+784 Proposed Laurel Creek Proj. Craig (Clinton) Stream Type B4 B4 F4b B4 B4 Drainage Area 2 7.1 2.2 2.2 1.8 Bankfull Width mean: 25.3 range: 23-29.5 47 43 26.5 27.6 Bkf mean depth mean: 1.6 range: 1.37-1.89 1.62 1.002 1.6 1.05 W/D 15.8 29 42.9 16.6 26.8 Area, bkf mean: 40.9 range: 38.7-43.4 75.95 43.075 42.5 mean: 29.5 Range: 26-33 mean Velocity 6.1 ft/s 6.2 bkf Q 250 cfs 265 265 max depth bkf mean: 2.4 range: 2.1-2.74 2.62 2.1 2.75 1.6 d-max/d-bkf 1.5 1.62 1.62 1.52 bank height ratio 1.3 1 3.75 1 Width fpa 55.5 180 50 75+ Entrenchment Ratio 2.4 3.8 1.16 3+ 1.35 Meander Length 215 185 Belt Width 74 70 Radius of Curvature 104 50 Lm/Wbkf 5 7 Rc/W bkf 2.43 1.9 Wbit/Wbkf 1.72 2.6 Sinuosity 1.04 1.25 1.1 Valley Slope 0.03 0.03 Avg. Slope 0.039 0.0228 0.0275 0.025 0.0331 Pool Slope mean: 0.0069 range:.001-.013 mean:.0039 range: 0-.011 1.14 0.0047 Riffle Slope mean:.041 range:.013-.095 0.052 mean:.07 range:.043-.25 Glide Slope Run Slope Sp/Savg 0.18 0.17 0.415 0.18 Sr/Savg 1.8 2.08 2.11 Sg/Savg Srun/Savg max pool depth 3.93 4.66 4.45 3.75 Dmax-p/Dbkf 2.46 2.88 4.44 2.75 Width-pool 29 26.9 34.5 W-pM-bkf 1.15 0.63 1.15 Area-pool 48.8 57.4 A-p/A-bkf 1.4 1.35 P-P spacing mean: 46.2 range: 19-78 mean: 66.2 range: 21-118 74.7 mean: 60 range:(45-75) mean: 100.5 range:42-156.5 P-P spacing/Wbkf 1.83 (0.75-2.6) 1.45 (0.442.5) 1.74 2.2 (1.7-2.8) 3.64 Channel Materials D16 1.5 1.05 1 1 D35 7 15 18 18 D50 39 60 34 34 D84 220 205 120 120 D95 450 470 250 250 Riffle Count D16 9 1.8 D35 26 20.5 D50 54 40.2 D84 190 135 D95 400 205 Sub-Pavement D16 2 4.6 D35 4.1 21 D50 11 43 D84 46 97 D95 80 110 Bar Sample D16 D35 D50 D84 D95 LAUREL CREEK PROPOSED PROFILE Watauga County: Area vs DA 1000 100 zli cr V1 d L Q 10 Drainage Area miles Watauga County: Width-bkf vs Drainage Area 1000 100 as a? w L ar 10 Drainage Area miles Lower Worley Creek Restoration Project Re ference Reach Dat a (station 1+20: end) (station 0:-1+20) e? Reach Name Existing Channel Existing Channel Basin Creek Worley Ck (upper) Proposed Channel Stream Type C4 E4 C4 C4 C4 Drainage Area 1.3 sq mi 1.3 sq mi 8 sq mi 0.96 sq mi 1.3 sq mi Bankfull Width 15 ft loft 30.7 ft 15 ft 16-18 ft Bkf mean depth 1.2 ft 1.6 1.9 ft 1.2 ft 1.22 W/D 12.5 6.25 16.4 12.8 14.7 Area, bkf 18.1 sq ft 16 sq ft 57.4 sq ft 17.6 sq ft 22 sq ft mean Velocity 4.8 ft/sec 4.9 ft/sec 5.4 ft/sec bkf Q -120 cfs -120 cfs -120 cfs max depth bkf 1.7 2.35 ft 2.5 ft 1.7 ft 2.0 ft d-max/d-bkf 1.4 1.47 1.7 1.4 1.6 bank height ratio 1.6 1.4 1 1 1 Width fpa 23 ft. 120 +/- ft 85 ft 50 ft 75 + ft Entrenchment Ratio 1.5 12 2.8 3.3 4.2+ Meander Length 98 ft 98 ft 350 ft 135 ft 114-140 ft Belt Width 52 ft 40 ft 105 ft 71 ft 60 ft Radius of Curvature 20 ft 20 ft 77-134 ft 20.70 28 ft Lm/W bkf 6.5 9.8 11.4 9 6.3-8.75 Rc/Wbkf 1.33 2 2.5-4.4 1.38 2.8 Wblt/Wbkf 3.5 4 3.4 4.7 3.2 Sinuosity 1.3 1.26 1.02 1.5 1.2 Valley Slope 0.0116 0.0174 0.014 0.025 0.016 Avg. Slope 0.0144 0.0138 0.014 0.017 0.012 Pool Slope 0.0037 0.0026 0.005 0.0035 0.0024 Riffle Slope 0.026 0.031 0.051 0.041 0.0255 Glide Slope Run Slope Sp/Savg 0.26 0.19 0.39 0.21 0.21 Sr/Savg 1.8 2.25 3.61 2.46 2.04 Sg/Savg Srun/Savg max pool depth 2.88 ft 3.1 ft 1.7 ft 1.8 ft 2.5 Dmax-p/Dbkf 1.7 1.94 0.9 1.5 2 Width-pool 18 ft loft 40.6 ft 15 ft 24 W-p/W-bkf 1.2 1 1.3 1 1.3 Area-pool 28 sq ft 19.2 sq ft 64.4 sq ft 26.8 sq ft 28.6 A-p/A-bkf 1.5 1.2 1.1 1.5 1.3 P-P spacing 38-80 ft 38-80 ft 224 ft 125 ft 62-110 ft P-P spacing/Wbkf 2.5-5.3 2.14.4 7.3 8.3 3.4-7 Channel Materials D16 0.35mm 0.35mm 4.8mm 1.7mm 0.35mm D35 4mm 4mm 20mm 8mm 4mm D50 9mm 9mm 38mm 45mm 9mm D84 100mm 100mm 130mm 160mm 100mm D95 250mm 250mm 230mm 230mm 250mm So H Z 3 J H Z W r 3 Q J J a J ? Q O 57 O W J Li J Cn y \ Q H W M W U' W Y < -pd ?@qjD [ajne-l Luo _j to --_-_--- ------ y ; W f W f Q U f C7 U W Z ? J C w 4 / 1 W i w w 0 1 0 1 Z 1 W 1 1 3 ? 1 W ° i . > ro i v 1 z a f ? i a 1 ' i o o Y ++ 1 L!J 1 W U w u J J - 1 m 1 W 41 Z LL z Y c W Q U w J Q C O J co w O 0 I U I m 3: z Z z m + O Q O _ cn I- H C O I r U X I p I Z W O 0 N3aav9 o , a i i m -0 I? m 0 l 4 ° Z 0 ? v 6 W ??i rnw3??w1 » ' ti ? ? J ? w ' i °a r a pp ( ?(?55 E Ol o N Y z 6 W II w ???I N - O m w il- CD n Q m N <-+ O m w r- CD 0 I? r- r, CD 0 (D CO W CD CD LD CD (D 0 0 0 0 V r L N- O M m n on V M N- OM N n W 0 I- r-? o (D (D CD CD CD CD CD CD CD (n n n In n Entrainment Calculation Form .., Stream ore ,. _ - Reach: sz? Li +58. .; r 41 Date: Observers Critical Dimensionless Shear Stress: ccr = 0.0834(didso)-OM2 Value variable D efnkion ch(mm) G ? DW Bed Material (LTA/ from rM pebble count) c6 (mm) Bar Sample D50 or Sub-pavement DW ?o.as 1 -Cci ss Crocal ••. Banldtrti Mean Depth Required for Entrah meet of Largest Particle in Bar Sample: dr = (Tci*1.WDj/Sq Value Variable Definition _ , O A- TCt CrifKgd Dimes Shear Stress Eh (Riot) Lanjest Particle *am bar sample, t? ?D L SQ (ttAt) E)asOM 8wkf A vier Surface slope dr (ft) 18anMd Mean Depth Required d. (ft) ` E?s8 Bankhrii Mean Depth (from Mile crass sec*M) Circle: Stable (de(d. =1) Aggradatg (cVd, <1) >9 Bankfull Water Surface Slope Required for Entrak m nt of Largest Particle in Bar Sample: . Sr = ttc;j*1-65Wde '$AS Mhowsw SPOCKC1M do of I11C Value Variable Definition . ?? '[tit Crr'?'cat FSior>loss Shear Stress r? . 3 G D I (tee) Largest particle from bar Saute Y' ?a dQ (ft) 1 S, OUR) Ct2,11 Circle: a'? (S Emsting Bankkd Mean Depth (from tithe cross section) kfull Water Surface Slope Required A=1) - AWadkg ( <1) ( >1 Sediment Transport Validation 1 IQ a in Bw Sample Dj (mm) 0 , 013 Bantam Shear stress TQ=YRS ( = ??'[wG?R = l , aq s = ... ?t Moue particL- sae (gran) at bankM shear stress (predk:ted by the Shields Diagram-13 ti7 M field boot-pM, Red field boot- p190) Predrded shear stress requirW to awe movers ad of Di (torn) (see Shields D'ragrarrr Mn field both-pM. Red field book p190) G'w. -1- 4L tMWden.4 Mwimbuw 4M Entrainment Calculation Form Pw, Stream: ?11? vfLt -- .s e I ?/`U d SQ ReacW Date: - 2 = U 3 Observers Critical 13imensionless Shear Stress: Tc; = 0.0834(cyd4O-S72 Vacua Variable Definition 1 l)S ?(mm) ` D50 Bed Material (i>ao km rye pebble cwt) y Ow (rrun) Ber Sample DW or sub-paveum t l)W . ' 1 12:•aa3 L--- 1 T? D! -I -Ain Shear Stress cmcw Banldafi New Depth Required for Errbainmad of largest Particle in Bar Sample: dr = (Tci" l-&S*DJ/Se 1:0 ==*Wo edsmcft%*Wcfseamm Value Variable Defy llkm f? 0 3 Tci Cry Dimes Shear Stress QQ z S (tvlh E)dsft OankfiA Water Surface Slope. 1,1q 1 d,.m Bankfud mean Depth Required J, Lz d. ( Banlduil Mean Depth (from riffs cross section) ?/?v ose Circle: Stable (cVdr =1) Aggrac ft (d.4 <1) ( > _ BanMil Water Surface Slope Required for Entrainment of Largest ParWle, in BarSample: .Sr= (TCi"1.65"DJ/de 1.65-submerged WeciGcstdoitatsedimF Value Variable Definition n?a?3 TC Criacai Der?ensioMess stress 3 b Di (feet) Largest parade morn bar s-anVle /, Z Z de QQ Emsang BmkbA Mean Depth (from rme cross section) Q,o I- I sr ( Water Su face Slope Reid P J? D- o 12- 0k Cirde: (S ew=1.) AWaftlg (S^-1) Degrading (S^ >1) Sediment Transport Validation I ! Largest Parade in Bar Sarroe Dj (mm) Q, g Bar*U Shear Stress Ta=-fRS Mile) f -(ZZ: 4 JZa 1. r 3 s _ b, o1 Z H Moveable parade ske (rmn) at baMdW shear stress (pred'ded by the Stields Diagram; Blue Sj-pY field boolc . Red rwN bode p190) ?• ?- Precicted shear shess recluked to it a ffovemerit ofDj (mm) (see Stdelda DkKjrdm Blue field bookpM. Red field book pIN) .Wh*.C fft DoatrrrerKs/Class Fdesff~Offnaff M ft=.* 1s IMi wW Hydrology 9100 Worley Creek Subpavement Sample Station 4+86 2/25/03 110 100 90 80 70 s .r L w 60 m 50 es E 40 30 20 10 Worley Creek Pavement Count 4+88 2/25/03 110 100 90 80 I 70 z L C w 60 0 m 50 E 40 30 20 10 0 10 100 1000 particle size (mm) OHO wAT?'QQG Michael F. Easley Governor r William G. Ross, Jr., Secretary q Department of Environment and Natural Resources 0 Alan W. Klimek, P.E., Director Division of Water Quality February 18, 2003 John Vilas E'nv 3764 Rominger Road Banner Elk, NC 28604 Subject: Laurel Creek Stream Restoration DWO Project No. 030164 Watauga County Dear Mr. Vilas: The Wetlands Unit staff reviewed the stream work plans for the subject project and determined that additional information is necessary to complete the technical review process. The required additional information is as follows: 1. Reference Stream, Laurel Creek Are the upper and lower parts of this stream the reference streams? . 2. Morphological Measurements Laurel Creek -The reference streams suggest pool to. pool spacing to bankfull width ratios of less than 2. The design stream has a ration of almost 4. Please explain this discrepancy. Worley Creek - The reference and design streams have very different meander width ratios. Please explain the discrepancy. The reference stream has a sinuosity of 1.02. It is not clear why this would be classified?as a C type stream. The pool to pool spacing to bankfull width values differ from those of the reference stream. Please explain this discrepancy. Also, the pool to pool spacing in the table appears to be different from the shown in the longitudinal profile of the design stream. Please explain. Sediment Transport Analysis The sediment transport analysis for Laurel Creek appears to indicate that the channel is competent to move the largest particles. However, the analysis suggests that the stream may be able to transport larger particles than may be available resulting in degradation. Please explain how the stream will remain stable. Please provide the sediment transport analysis for Worley Creek. If you have any questions or would like to discuss this project, please contact me at (919) 733-9584. Also, please note that the Internal Technical Guide for Stream Work in North Carolina, April 2001, and other documents and information can be downloaded from the Wetlands Unit web site at hftp://h2o.ehnr.state.nc.us/ncwetlands/restore.htmi. rn St. J hn, PE Environmental Engineer cc: Winston-Salem Regional Office Cyndi Karoly File 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), hftp://h2o.enr.state.nc.us/ncwetlands/ O O > > I C) m C d d w d " (v 0 O I O U O m CO O 0 O t0 L C ? ? 3 E d _ v a a ? .- (V C7 4 6 t -65 O O O O O O >> > > > > > 4t ft U O 4k O O O O O > > > > > O O 0 O ft 0 0 0 0 0 0 0 0 0 0 >> » >> > > > > 0 0 0 0 0 o 0 0 0 0 ? a ak x a s ? ? ? a O• P• p fCC Rf Onp co w E V) co 3o U ° ° o M < 6L o ¢ n ()MO O N ((O N M O W N CO O N r O N O cM o Lo Cn f O O i O c0 O n, M M O n n7! CO( n N O N n. O. c; cl; L ? 9 v a? 3 .3 ? 5 d o s c SC t c 5 c ?? o ? o a Se a y a 3 0 3 o ro ? m ?° c _y z m ° $ ° o O L C O o m d L L O N O yN d .0.. o ?? O D ... L tOd N '= D y L d d _N o O pp3 p yp O L D$ y N D D y m O O O O C o O. £ 3 o H m E o t y E? E m _ D E `o v a o o° a o? ° o 0 3 0 0 o -o g L c o 0 3 c d y o o o °- D N i0 N N O N> O i0 .? Of0 00 N a c N E ¢ m in > a a¢ 2 a: a¢ a O N (7 ui f0 n m of o N m e L6 f0 n m W O) ? '- --- N N N N N N N N N I co A O Q O 00 O O La - O ? O N o 0 t5-0 I a) 0) 'D cli 9! E E'o E= = a E ? V E E 00) 0) Cl) 0) Cl) 6 MOOOON ? n 2! e! 0 moom`D c+ooooo m d Z U `o y m R N 7 O c E t U O ? N O N C U N y O d Ctl ? co N y R C CCi ja O W C N ?I E E E E N xE? Q oMV v cm O. v n n (A LO (on N n r oLnW M V) ? N co O S C0 o o 0 T A N (aO co H co O a 7 C:, ? C O O O R r Cl) N p N E: N N c E m o ? (CD_ CL CL ? ? E 2) Q c E¢ 'a o(°n._ ? ?323'c a a ELL co Zm m Y a> v v~ F 6 m m m O m 3 rn? cq m E `e 'a M O ao ce> rn M ao( M o r 0 0 0 0 0 W O D ? ? CO N to n co O ? m r V LO m ' O V Oto co N O 0 0 0 0 0 cN,?O . 'm r m m m m v CND CO N V W 0 N co O t?pppF V' N co ? O 0 0 0 0 0 CO M 0 N IL ' to O D ( 7 N ,I y Ln O r- N (A O N M 10 M W O ? O 'O CO r r CO V N ? ? V M ? ln tU x O N ? M X ? y CO CO ? CA d (J? V ? M M N _ V Cn0 u L V A d c o 'm c E c 'm aDi o a i U m 1 ? i m _.North Carolina Wildlife Resources Commission fry _ Charles R. Fullwood, Executive Director MEMORANDUM { R t : •..?.?.. I5 0 NJ ! TO: Tim Smith, Permit Coordinator, Asheville Office If r U.S. Army Corps of Engineers U", FEg ?. , ?(w FROM: Ron Linville, Regional Coordinator.' WTtAN Habitat Conservation Program ATE 11ALI EC J DATE: February 5, 2003 SUBJECT: Review ofNWP 27 Permit Application, Laurel and Worley Creek Restoration Project, Watauga County The applicant is requesting a letter of concurrence from the North Carolina Wildlife Resources Commission (NCWRC) to obtain a 404 permit from the U.S. Army Corps of Engineers for die referenced stream restoration project. The NCWRC has reviewed information provided by the applicant, and field biologists on our staff are familiar with habitat values of the project area. These comments are provided in accordance with provisions of the Clean Water Act of 1977 (33 U.S.C. 466 et. seq.) and the Fish and Wildlife Coordination Act (48 Stat. 401, as amended; 16 U.S.C. 661-667d). The applicant proposes to restore the lower portions of Laurel Creek and Worley Creek using Rosgen Priority 1 and 2 restoration techniques. Large berms and previous land disturbances have reduced geomorphic stream and flood plain functionality. Restoration will return the stream to portions of the old stream channel and restore floodplain access to reduce destabilization within the ecosystem. Existing wetlands will be enlarged and additional wetlands may be provided during the restoration. In addition, an off line pond will be established where the stream is currently over widened. 'this pond will be fed by a water diversion. The streams in the area support brook, brown and rainbow trout. Based on the information provided by the applicant and our information on the range of trout in the project area, we do not believe this project will cause significant effects to waters supporting trout providing the following conditions are followed: Instream work and land disturbance within the 25-foot wide buffer zone are prohibited during the trout spawning season of October 15 through April 15 to protect the egg and fry stages of trout from off-site sedimentation during construction. All design and restoration activities should follow state-of-the-art bioengineering techniques. Existing berms should be modified or removed to the extent Mailing Address: Division of :Inland Fisheries • 1721 Mail Service Center* Raleigh, NC 27699-1721 Telephone: (919) 733-3633 ext. 281 a Fax: (919) 715-7613 Laurel & Worley Creek 2 January 28, 2003 Bioengineering Restoration necessary to ensure and restore maximum floodplain access to the restored streams. 3. Ground moving equipment used should be new or have very few operational hours in order to limit the potential petroleum releases. Spill containment materials must be readily available especially if equipment will be used in stream channels. 4. Stringent erosion control measures should be installed where soil is disturbed and maintained until. project completion. Temporary or permanent herbaceous vegetation should be planted in the trout buffer and on all bare soil within]. 0 days of ground disturbing activities to provide long-term erosion control. 5. Only native riparian plant species should be used for the project. 6. Cattle exclusion practices should be provided to prevent future impacts to stream stability, buffers and water quality. 7. Deed restrictions, conservation easements or other legal protective measures should be placed on stream buffers. We recommend minimum twenty-five (25) feet of undisturbed trout stream buffers; however, buffers of fifty (50) feet for intermittent streams and one hundred (1.00) feet for perennial streams are preferred whenever practicable for aquatic and terrestrial habitat benefits. Thank you for the opportunity to review and comment on this project. If you have any questions regarding these comments, please contact me at 336/769-9453. Cc: John. Dorney, DWQ NWP 27 PERMIT APPLICATION LaureCCreek Restoration January 23, 2003 Applicant: Blue Ridge RC&D, Inc. 1081-2 Old US Hwy. 421 Sugar Grove, NC 28679 Agent: EWV 0301 1 164 Envimmnum' al Consulting Services Inc. 3 764Rominger Rd. Banner Elk, NC 28604 EW EI1V11'OIt Consulting Sc vices Irw. January 27, 2003 Mr. Tim Smith USACE Asheville Regulatory Field Office 151 Paton Ave, Rm 208 Asheville, NC 28801.5006 RE: Laurel Creek Restoration Project Dear Tim: 3764 Rominger Road Banner Elk, NC 28604 Ph/Fax. 828-297-6946 e-mail: wccJvQskybesLcom Enclosed is an application for NWP 27 for the referenced project. We are also sending this package to Ron Linville with NCWRC and will soon be sending three sets of plans to NC DWO. If you have any questions regarding this information please call me at 828-297-6946, thank you. Sincerely, hn C. Vitas President, E'nV Environmental Consulting Services Inc. Cc: Mr. Stan Steury, Blue Ridge RC&D Mr. Ron Linville, NC WRC Upper Laurel Creek Project Application Laurel Creek Design and 3 Existing Conditions Worley Creek Design and Existing Conditions I Office Use Only Form Version April 2001 USACE Action ID No. DWQ No. If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A" rather than leaving the space blank. 1. Processing 1. Check all of the approval(s) requested for this project: X Section 404 Permit ? Section 10 Permit ? 401 Water Quality Certification ? Riparian or Watershed Buffer Rules 2. Nationwide, Regional or General Permit Number(s) Requested: NWP 27 3. If this notification is solely a courtesy copy because written approval for the 401 Certification is not required, check here: X per WQC #3353 4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for mitigation of impacts (see section VIII - Mitigation), check here: ? H. Applicant Information 1. Owner/Applicant Information Name: Blue Ridge RC&D Inc. Mailing Address: 1081-2 Old US Hwy. 421 Sugar Grove, NC 28679 Telephone Number: 828-297-5805 Fax Number: 828-297-5928 E-mail Address: blueridgercd@s!WjNst.com 2. Agent Information (A signed and dated copy of the Agent Authorization letter must be attached if the Agent has signatory authority for the owner/applicant.) Name: John C. Vilas Company Affiliation: E'nV Environmental Consulting Services Inc. Mailing Address: 3764 Rominger Road Banner Elk NC 28604 Telephone Number: 828-297-6946 Fax Number: 828-297-6946 E-mail Address: wcc-jv@Akybest.com Page 3 of 12 M. Project Information Attach a vicinity map clearly showing the location of the property with respect to local landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property boundaries and development plans in relation to surrounding properties. Both the vicinity map and site plan must include a scale and north arrow. The specific footprints of all buildings, impervious surfaces, or other facilities must be included. If possible, the maps and plans should include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion, so long as the property is clearly defined. For administrative and distribution purposes, the USACE requires information to be submitted on sheets no larger than 11 by 17-inch format; however, DWQ may accept paperwork of any size. DWQ prefers full-size construction drawings rather than a sequential sheet version of the full-size plans. If full-size plans are reduced to a small scale such that the final version is illegible, the applicant will be informed that the project has been placed on hold until decipherable maps are provided. 1. Name of project: Laurel Creek Restoration 2. T.I.P. Project Number (NCDOT Only): 3. Property Identification Number (Tax PIN): 1961-51-4080-000 4. Location County: Watauga Nearest Town: Banner Elk Subdivision name (include phase/lot number): Directions to site (include road numbers, landmarks, etc.): From Banner Elk take Hwy 194 North approx. 4 miles turn left on Rominger Road go approx 1.5 miles bear right on dirt road d (staying on Rominger) Go approx 2.5 miles. Site is adjacent to hav field behind 3 barns an near mail box # 3764. 5. Site coordinates, if available (UTM or Lat/Long): 36 deg 13'23" N, 81 deg 50' 5" W (Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) 6. Describe the existing land use or condition of the site at the time of this application:Agricultural, hay field and pasture 7. Property size (acres): 196 acres 8. Nearest body of water (stream/river/sound/ocean/lake): Laurel Creek 9. River Basin: Watauga (Note - this must be one of North Carolina's seventeen designated major river basins. The River Basin map is available at http://h2o.enr.state.nc.us/admin/maps/.) Page 4 of 12 Describe the purpose of the proposed work: To restore approximately 1400 linear feet of Laurel Creek and approximately 650 linear feet of Worley Creek immediately above the confluence with Laurel Creek (see project narrative 10. List the type of equipment to be used to construct the project: Standard construction equipment: track excavator, backhoe dump truck loader 11. Describe the land use in the vicinity of this project: Rural residential, agricultural and undeveloped Very low density. IV. Prior Project History If jurisdictional determinations and/or permits have been requested and/or obtained for this project (including all prior phases of the same subdivision) in the past, please explain. Include the USACE Action ID Number, DWQ Project Number, application date, and date permits and certifications were issued or withdrawn. Provide photocopies of previously issued permits, certifications or other useful information. Describe previously approved wetland, stream and buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project, list and describe permits issued for prior segments of the same T.I.P. project, along with construction schedules. A USACE 404 permit and a NCDENR 401 permit was obtained previously for the Worley Creek Restoration Project in 1999, the previous project is upstream of the currently proposed work on Worley Creek Previous permit #'s• NC WQC Project # 980342 (issued 5-19-98), USACE 404 # 199830459 (issued 3-15-99) The previous project restored approximately 1600 linear feet of F4/5 channel with a meandering, E4/5 channel and created/restored/enhanced over 5 acres of wetlands The previous proiect area is surrounded and protected by a 13 acre conservation easement The proposed project will not impact the previous project in any way. V. Future Project Plans Are any additional permit requests anticipated for this project in the future? If so, describe the anticipated work, and provide justification for the exclusion of this work from the current application: No additional 404/401 permit requests are anticipated for this project. VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. The applicant must also provide justification for these impacts in Section VII below. All proposed impacts, permanent Page 5 of 12 and temporary, must be listed herein, and must be clearly identifiable on an accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a delineation map, whether or not impacts are proposed to these systems. Wetland and stream evaluation and delineation forms should be included as appropriate. Photographs may be included at the applicant's discretion. If this proposed impact is strictly for wetland or stream mitigation, list and describe the impact in Section VIII below. If additional space is needed for listing or description, please attach a separate sheet. 1. Wetland Impacts Wetland Impact Site Number indicate on ma Type of Impact* Area of Impact acres Located within 100-year Floodplain** es/no) Distance to Nearest Stream linear feet Type of Wetland*** * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding. ** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps (FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or online at http:/hNiNiA-.fema.soc. *** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond, Carolina Bay, bog, etc.) List the total acreage (estimated) of existing wetlands on the property: approx 10 acres Total area of wetland impact proposed: 0.0 2. Stream Impacts, including all intermittent and perennial streams Stream Impact Site Number (indicate on ma Type of Impact* Length of Impact (linear feet) Stream Name** Average Width of Stream Before Impact Perennial or Intermittent? (please specify) Laurel Creek Fill/ bank grading/flooding 1420 Laurel Creek 35 feet Perennial Worley Creek Bank grading/Fill 490 Worley Creek 18 feet Perennial Page 6 of 12 * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap, dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain), stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included. ** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at w"iv.usss.gov. Several internet sites also allow direct download and printing of USGS maps (e.g., %N-vo .tonozone.com, vvNvy.,.mMNuest.com, etc.). Cumulative impacts (linear distance in feet) to all streams on site: 1910' Perennial, 3. Open Water Impacts, including Lakes, Ponds, Estuaries, Sounds, Atlantic Ocean and any other Water of the U.S. Open Water Impact Site Number indicate on ma) Type of Impact* Area of Impact acres Name of Waterbody (if applicable) Type of Waterbody (lake, pond, estuary, sound, bay, ocean, etc. * List each impact separately and identify temporary impacts. Impacts include, but are not limitea to: nu, excavation, oreogmg, flooding, drainage, bulkheads, etc. 4. Pond Creation If construction of a pond is proposed, associated wetland and stream impacts should be included above in the wetland and stream impact sections. Also, the proposed pond should be described here and illustrated on any maps included with this application. Pond to be created in (check all that apply): X uplands X stream ? wetlands Describe the method of construction (e.g., dam/embankment, excavation, installation of draw-down valve or spillway, etc.): An off-line pond is to be constructed in an excessively wide and deep portion of existing, channel and adjacent upland areas. The pond will serve to generate fill material needed on the project while reducing_ fill requirements. The pond will be fed by a piped diversion from upstream Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): Balance cut and fill on the project, aesthetics, recreation, and habitat enhancement. Size of watershed draining to pond: approx 2 acres. Expected pond surface area: 0.3 acres Page 7 of 12 VII. Impact Justification (Avoidance and Minimization) Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide information related to site constraints such as topography, building ordinances, accessibility, and financial viability of the project. The applicant may attach drawings of alternative, lower-impact site layouts, and explain why these design options were not feasible. Also discuss how impacts were minimized once the desired site plan was developed. If applicable, discuss construction techniques to be followed during construction to reduce impacts. The proposed work and associated impacts are proposed to restore and stabilize previously altered channel areas that are currently unstable and eroding The pdMM purpose of this project is to provide an overall jmprovement to water quality The methods proposed (root wads, sod mats willow transplants and rock vanes are desi ng ed to provide the desired stability as well as enhance instream habitat. VIII. Mitigation DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC Division of Water Quality for projects involving greater than or equal to one acre of impacts to freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial streams. USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide Permits, published in the Federal Register on March 9, 2000, mitigation will be required when necessary to ensure that adverse effects to the aquatic environment are minimal. Factors including size and type of proposed impact and function and relative value of the impacted aquatic resource will be considered in determining acceptability of appropriate and practicable mitigation as proposed. Examples of mitigation that may be appropriate and practicable include, but are not limited to: reducing the size of the project; establishing and maintaining wetland and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of aquatic resource functions and values by creating, restoring, enhancing, or preserving similar functions and values, preferable in the same watershed. If mitigation is required for this project, a copy of the mitigation plan must be attached in order for USACE or DWQ to consider the application complete for processing. Any application lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as incomplete. An applicant may also choose to review the current guidelines for stream restoration in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at http://h2o.enr.state.nc.us/newetiands/strm.gide.html. 1. Provide a brief description of the proposed mitigation plan. The description should provide as much information as possible, including, but not limited to: site location (attach directions and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet) of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view, preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a Page 8 of 12 description of the current site conditions and proposed method of construction. Please attach a separate sheet if more space is needed. A permanent conservation easement with average width of 30 feet either side of the stream is proposed over most of the project. Easement width will be reduced in the vicinity of the existing structures 2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration Program (NCWRP) with the NCWRP's written agreement. Check the box indicating that you would like to pay into the NCWRP. Please note that payment into the NCWRP must be reviewed and approved before it can be used to satisfy mitigation requirements. Applicants will be notified early in the review process by the 401/Wetlands Unit if payment into the NCWRP is available as an option. For additional information regarding the application process for the NCWRP, check the NCWRP website at http://h2o.enr.state.nc.us/'%TD/index.htm. If use of the NCWRP is proposed, please check the appropriate box on page three and provide the following information: Amount of stream mitigation requested (linear feet): 0 Amount of buffer mitigation requested (square feet): 0 Amount of Riparian wetland mitigation requested (acres): 0 Amount of Non-riparian wetland mitigation requested (acres): 0 Amount of Coastal wetland mitigation requested (acres): 0 IX. Environmental Documentation (DWQ Only) Does the project involve an expenditure of public funds or the use of public (federal/state/local) land? Yes X No ? If yes, does the project require preparation of an environmental document pursuant to the requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)? Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA coordinator at (919) 733-5083 to review current thresholds for environmental documentation. Yes ? No X If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a copy of the NEPA or SEPA final approval letter. Yes ? No ? X. Proposed Impacts on Riparian and Watershed Buffers (DWQ Only) It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to required state and local buffers associated with the project. The applicant must also provide justification for these impacts in Section VII above. All proposed impacts must be listed herein, and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ Page 9 of 12 Regional Office may be included as appropriate. Photographs may also be included at the applicant's discretion. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Neese), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify )`? Yes El No X If you answered "yes", provide the following information: Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer mitigation is required calculate the required amount of mitigation by applying the buffer multipliers. Zone* Impact (square feet Multiplier Required Mitigation 1 3 2 1.5 Total * Zone I extends out N feet perpendicular from near nanK of cnannei; /.one L extends an additional 20 feet from the edge of Zone 1. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 2B .0242 or.0260. XI. Stormwater (DWQ Only) Describe impervious acreage (both existing and proposed) versus total acreage on the site. Discuss stormwater controls proposed in order to protect surface waters and wetlands downstream from the property. NA XII. Sewage Disposal (DWQ Only) Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of wastewater generated from the proposed project, or available capacity of the subject facility. NA XUL Violations (DWQ Only) Page 10 of 12 Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules? Yes ? No X Is this an after-the-fact permit application? Yes ? No X XIV. Other Circumstances (Optional): It is the applicant's responsibility to submit the application sufficiently in advance of desired construction dates to allow processing time for these permits. However, an applicant may choose to list constraints associated with construction or sequencing that may impose limits on work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and Threatened Species, accessibility problems, or other issues outside of the applicant's control). ,3-0 /-.2 Applicant/Ag is Signature Toknn C. UIIcL Date (Agent's si ture is valid only if an authorization letter from the applicant is provided.) US Army Corps Of Engineers Field Offices and County Coverage Asheville Regulatory Field Office Alexander Cherokee Iredell Mitchell US Army Corps of Engineers Avery Clay Jackson Polk 151 Patton Avenue Buncombe Cleveland Lincoln Rowan Room 208 Burke Gaston Macon Rutherford Asheville, NC 28801-5006 Cabarrus Graham Madison Stanley Telephone: (828) 271-4854 Caldwell Haywood McDowell Swain Fax: (828) 271-4858 Catawba Henderson Mecklenburg Transylvania Raleigh Regulatory Field Office Alamance Durham Johnston Rockingham US Army Corps Of Engineers Alleghany Edgecombe Lee Stokes 6508 Falls of the Neuse Road Ashe Franklin Nash Surry Suite 120 Caswell Forsyth Northampton Vance Raleigh, NC 27615 Chatham Granville Orange Wake Telephone: (919) 876-8441 Davidson Guilford Person Warren Fax: (919) 876-5283 Davie Halifax Randolph Wilkes Washington Regulatory Field Office Beaufort Currituck Jones US Army Corps Of Engineers Bertie Dare Lenoir Post Office Box 1000 Camden Gates Martin Washington, NC 27889-1000 Carteret* Green Pamlico Telephone: (252) 975-1616 Chowan Hertford Pasquotank Fax: (252) 975-1399 Craven Hyde Perquimans Pitt Tyrrell Washington Wayne Union Watauga Yancey Wilson Yadkin *Croatan National Forest Only Page 11 of 12 Blue Ridge nesource Conservation & pevelopment council, Inc. 1061 SUw .2 Grow, MC 22W99 U849 P5805 For. 8204914M swsuurn. bra. OMdOI • VgN ii6o t. Peo MWAW- 68ft%kw? a A&M MOWt January 22, 2003 NC DENR Division of Water Quality MSC-1921 Raleigh, NC 27699 To Whom It May Concern: Buck Engineering of Cary, North Carolina is authorized to be our agent in the Laurel and Worley Creels restoration project to be completed in Spring of 2003. If you have questions, please give me a call at 828.297-5805 or entail me a sst boone.net. Sincerely, Stan Steury, Coordinato Blue Ridge RC&D Council, Inc. -- - , - 1 : , rf .j j I j L _ 1`•_ 4 ` ,14y1? i I` ? ?' l?v? _ 1`??•. `???a-- qtr ? -? ', r • -.,.? ? ? ? ? ? .` ? . - , . - ? '--may`{ • ? ?_.._ - - `? ? i. `'` 1?? 'rte" ? ?..,?_-• 1 -' I y 1AA Z . -_._ ,? +5 ?? ? '? ? r?? '?+ + t ? ? ? ? • ?? --fir,.. ? ??•, Y--?J? ? '? -TT ?-- - ? ?''? '? 1 51 y y++ . ; r- ?. ? ?y ?.,5 •?by?4 y?' ,,ty` .. ? I ? • •? ----'`yr _ ? J I ? ?? ' _ ,?\t , - .' ll 1 y ? ".ti 1'\ ,?? ?\ • ? 4[µ'`r 6 W? 11 O ,' .* 1 0m 0 1°50'0. 1° o Name: VALLE CRUCIS Location: 036° 13'22.7" N 081 ° 49' 56.8" W Date: 1/6/2003 Caption: Laurel/Worley Creek Project Area Scale: 1 inch equals 1000 feet copyright (C) 1997, Wptech, Inc. 2 Project: UPPER LAUREL CREEK RESTORATION Location: Watauga, NC PROJECT NARRATIVE General: The Upper Laurel Creek Restoration Project will restore approximately 2000 linear feet of mountain trout stream in northwestern Watauga County, NC (see location map). The project involves work on two streams, Laurel Creek (approx. 1500 linear feet) and Worley Creek (approx. 500 feet). Worley Creek, at the project site, has a drainage area of approximately 1.35 sq. mi. and contains a healthy population of native Brook Trout. Another reach of Worley Creek approximately 2000 feet upstream of the current project reach was restored in 1999. Laurel Creek at the project site has a drainage area of 2.2 sq. mi. Laurel Creek is also a trout stream but contains primarily stocked populations of Brown and Rainbow Trout. This project was identified as a high priority restoration site in the July 2000 Watauga River Basin Riparian Corridor Conservation Plan funded through NC CWMTF grant and prepared for the Blue Ridge Rural Land Trust. The current project is funded through a CWMTF grant to Blue Ridge RC&D. The contract for this project was awarded to Buck Engineering of Cary, NC and E'nV Environmental Consulting Services Inc. of Banner Elk, NC. The design objectives of the Upper Laurel Creek Restoration Project are to correct severe stream bank erosion and channel migration problems. Also to provide an accessible floodplain, create/enhance riparian wetlands, and stabilize and enhance aquatic habitat to these designated troutwater streams. The existing channel is a F4b in the upper part and a B4 with major problems in the lower section. The proposed channel is a stable B4. The Worley Creek portion of this project will involve regrading and stabilizing of streambanks to obtain a bankheight ratio of 1.0 and correct bank erosion problems. Some pattern adjustment will also be incorporated to establish stable meander bends and higher quality buffer in the vicinity of existing structures. Upper Laurel Creek: The upper end of the project reach lies in open mixed hardwood forest, terraces with a thick Rhododendron subcanopy and hardwood canopy flank the valley floor. The lower end of the project reach is bordered by a pasture/hayfield to the east (river right) and a large rocky floodplain with numerous wetland pockets to the west. In addition to the wetland pockets located in the large floodplain area, there are two additional small pockets (approximately 900 sq. ft.) along the western edge of the valley near the upper end of the project reach (see site plan). This section of Laurel Creek has a history of alteration. Although the specific nature of the alterations has not been confirmed, there is abundant evidence of past activities. The most significant feature is a large berm 8-10 feet high and 400 feet long that confines a long straightened run through the middle portion of the project reach. The upper section contains areas that appear to have been graded down two feet as well as numerous mounds of earth. The lower section also contains numerous mounds of earth. All of these mounds have been in place for at least 50 years as evidenced by the size on trees growing out and interviews with long time residents. It is suspected that most of the berms and mounds are related to past sand and gravel mining operations. A large section of abandoned channel exists along the western edge of the valley that likely was Laurel Creek at one time. The reach immediately above the project reach is a stable B4. Farther upstream is mostly AM with short sections of B3/4 and Aa+. Below the project reach the valley broadens with a flatter slope; stream types are mostly C and F. There is an existing ford at approximate station 8+00 that will be replaced in the new channel at an appropriate location. Lower Worley Creek: The Lower Worley Creek project reach extends from the confluence with Laurel Creek 500 feet upstream The upper portion of the Worley Creek reach is bordered by a hay field on the left and mowed grass area with barns and a garden on the right. A long established ford exists in the middle of this reach and will be reconstructed at an appropriate location on the restored reach. The lower portion flows through a forested area with large earth berms and mounds left from past activity. These berms appear to have caused problems in this area by limiting floodplain functionality and confining the channel laterally. Existing Condition: Upper Laurel Creek: The upper portion of the project reach (station 0+00 - station 3+90) is predominantly F4b and contains severely eroding stream banks. Vertical and undercut banks 5 to 10 feet high are common, split flow and excessive over widening are also widespread. In one area several large trees have fallen into the channel due to severe bank erosion. This section of the existing channel transitions from severely incised to fully entrenched. From approximately station 3+90 to 7+00 the channel is straight and confined between a steep eroding bank (right) at the edge of a pasture and a large berm 8-10 feet high (left). The lower portion of the project reach is mostly B4 with a variety of problems. The left berm ends (near station 7+20) the bank becomes relatively flat and sandy. The streambed splits again near station 7+40 and does not converge until approx. station 9+50. The left bank through this section is eroding and unstable. After converging, Laurel Creek straightens through approx. station 13+00. The right bank height increases through this area becoming steep and eroded in places; the accessible flood plain is located on river left. Channel bedform and pattern also are in need of adjustment in this area. From station 13+30 where Laurel Creek takes a sharp left turn through the end of the project reach, Laurel and Worley Creeks are merely separated by a 20 foot-wide bankfull bench, this bench has been frequently overtopped and is gradually being eroded away. If no action is taken in this area the confluence of Laurel and Worley Creeks will soon be shifted upstream approximately 100 feet Sinuosity in the existing channel is low (1.04) due largely to past channelization and the presence of the large berm through the middle of the reach Lower Worley Creek: Upstream of the proposed restoration, Worley Creek is a stable E5 through an area with a broad accessible floodplain and wetlands. Problems with incision begin just above the beginning of the project. The bank height ratio in the upper part of the project reach is 1.3 to 1.4. Existing stream type in this area is an incised E4. Elderberry, willow and blackberry stands populate the riparian zone through the pasture area (Station 0+00 - Station 2+00). The left bank height increases between station 1+00 and 2+00, becoming severely eroded through this area. The lower section, from station 2+00, continuing through its confluence with Laurel Creek (station 5+00), Worley Creek is a C4 stream type. Throughout this portion of the project reach the bank height ratio is 1.4 to 1.6. In addition, large bennns that confine the channel have resulted in several areas of bank erosion and a limited sinuosity. Project description: Upper Laurel Creek: Laurel Creek will be restored as a priority 1-2 project, a proposed B4 channel of approximately 1500 linear feet will be constructed to replace the existing channel. The upper 800 +/- feet is a priority 1 design and the lower 700 +\- is a priority 2 design. The design is based on reference reach data collected from two reaches of Laurel Creek, one above the project reach and one below (see Reference Parameter Spreadsheet). Each reference reach used in the Laurel Creek design was chosen due to similarities in hydrophysiographic regioning, drainage areas, stream type and other desired characteristics. Reference reaches listed in the Reference Parameter Spreadsheet as well as others in the Watauga River Basin, including the Watauga and Elk River gages, were incorporated into mini-regional curves used to calibrate design parameters. Proposed channel dimension and profile parameters were set to ensure channel competency based on entrainment calculations. Channel pattern parameters were designed in accordance with regional dimensionless ratios and site constraints. Several significant site features and practical constraints influenced the proposed design. Due to high debris potential of the project reach it was considered essential to design broad, functional and very accessible floodplain, as well as to provide a channel with sufficient energy to move the largest available particles. The priority one restoration is proposed in the upper part of the project where the existing channel is most severely incised, this was found to be a more cost effective approach than constructing a floodplain for the existing channel through grading. This also allows this portion of the project to be constructed in the dry. The existing large berm will be removed by using it as fill for the existing (to be abandoned) channel. There is a substantial bedrock vane that extends into the area of the proposed channel in the middle of the reach. This bedrock is exposed in a section of abandoned channel (possibly old Laurel Creek). To decrease the likelihood of grade problems due to excessive bedrock, the proposed channel was routed into a section of the old abandoned channel through this area (proposed stations 5+25 to 7+50). The need to balance cut and fill locally was a significant budget issue and was resolved by incorporating a pond in the widest and deepest portion of the existing channel. This area of abandoned channel would have required approximately 2600 cubic yards to fill. At the lower end of the project reach Laurel Creek will be rerouted to allow for greater separation from Worley Creek. The berms and mounds in this area will be removed or pulled back away from the proposed channel. Existing wetlands located in the project area will be enhanced due to their location on the proposed active floodplain and riparian fringe. Existing wetlands will generally be enlarged and several areas of new created wetlands will be established. Channel stability will be achieved through a combination of techniques and measures. All areas of restored channel will be constructed with a design bank-height ratio of 1.0. Channel slope will be controlled with rock cross-vane structures at the head of all rifle sections. Channel bends will be stabilized with a combination of root wads, rock vanes and J-hook vanes. Channel banks will generally be graded with low angle banks and seeded. Where sod is accessible (lower part of reach) it will be used extensively to line graded banks. Where needed erosion control matting will be installed Lower Worley Creek: Beginning at upper end of the project (station 0+00) and extending through the incised area (station 2+00) the restoration objective is to decrease the bank height ratio allowing the stream to access its floodplain. This shall be achieved by raising the bed elevation, with grade control structures, and creating a bankfull bench that extends an average of 10 feet on either side of the stream. The bankfull bench will be constructed to encourage wetland creation throughout the upper part of the Worley Creek reach. This work will result in a change in stream type from a incised E4 to a stable C4. Extending from station 2+00 through the end of the project the priority 2 restoration utilizes the existing mixed hardwood riparian zone. The principal objective in the lower part of the reach is to create a functional, accessible floodplain by restoring a bank-height ratio of 1.0, removing berms and mounds, and adjusting pattern. The permanent ford will reconstructed in the vicinity of proposed station 1+00. Channel stability will be achieved through a combination of techniques and measures. All areas of restored channel will be constructed with a design bank-height ratio of 1.0. Channel slope will be controlled with rock cross-vane structures at the head of all rifle sections. Channel bends will be stabilized with a combination of root wads and rock vanes. Sod mats and Willow transplants will be used to line graded stream banks. Planting Plan: The riparian zone and buffer areas will be revegetated with a combination of trees, shrubs and herbaceous plants. All disturbed areas will be seeded with temporary cover (rye or millet depending on time of year) immediately following completion of work in those areas. Permanent cover will be established at the end of the project. Trees and shrubs will be planted throughout the riparian zone (except shrubs-only in powerline easements) at a density sufficient to achieve a forested condition, approximately 400 stems per acre. Species to be planted include: River Birch, Green Ash, Red Maple, Red Oak, Poplar, Black Willow, Sycamore, shrub Willow, shrub Dogwood, and Alder. Buffer: A permanently protected buffer area will be established around the restored areas of both Laurel and Worley Creeks. The buffer width will be an average of 30 feet from the top of bank on each side of the proposed restored channels. The buffer width will be reduced somewhat in the vicinity of the existing structures and garden along Worley Creek. The buffer area will be placed into a permanent conservation easement to be donated to a local land trust. Two permanent fords currently exist within the project area, one over each creek; these will both be replaced. The landowner also retains the right to construct a bridge across each of the streams in order to allow vehicular access to large sections of the property that would otherwise be restricted from public road access by proposed and existing easements. Such crossing locations are not planned nor have any locations been identified. Any future crossings will involve spanning structures and will be planned in accordance with all regulations applicable at the time such development is proposed. Monitoring Plan: An as-built survey of the restored channels will be conducted following construction and after one or two flushing flows. Additional monitoring activities are to be conducted by others. g ON O p 0 Q W cc a w 0 0 0 a Y W W O cc U W g J 0 Z ZZ H W < 10 W ZN V Q 0 HN J In w p L w W *? J D .0 n n i n 5?a g1 m m? w? o ¢o g a YaA k rm moo mm Von 2 Jo a - _ J ? i Io Q i qq I $ m w o ? LLJ W um a w ? Y W ° _ . 'Pd 4...3 1....i W a U : m w J 291 R o ? Q O 3z 1 W u m u W 4 ! 1? N s 4 = ' Y W J S n ? z S o w w g a ? ? 8 8 W WN IM $X" 3 }J rJ az QW F-Z QZ a F._ z m = H U T- " U ~ 0 Ir Q 0 U) W W O ? Cl- a_ Z WO ao a < a z cc J a o za zCE W LLI O O 3 O Z O? 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W W C O v d N is v .Q A F- OC C d Y d d L V d L J 0 Y c ea m n E 0 w v c ea 0 o v 0 co 0 N 0 5. 0 UOIJBAqla w v LO co LO I,- LO co U? V- cli ao co r r ?- r r ? ? r O _ O v d N N V 'a 0 O a 'N N Y N N i V d 3 cc _i 0 D_ Y c a .Q m E 0 w m c N O 0 O M O N O V- O O co to to O O O O Q w cv YJ r r r i- r uonqAsm Laurel Creek Design Reference Parameter Spreadsheet Laurel Creek above Laurel Creek near Existing Condition Proposed Laurel Creek Reach Name project River Laurel Creek Proj. Stream Type 64 B4 F4b B4 Drainage Area 2 sq mi 7.1 sq mi 2.2 sq mi 2.2 sq mi mean: 25.3 It Bankfull Width range: 23-29.5 ft 47 ft 43 It 28.5 ft mean: 1.6 It range: 1 6 ft Bkf mean depth 1.37-1.89 It 1.62 ft 1.002 ft . W/D 15.8 29 42.9 18.6 mean: 40.9 sq ft range: 38.743.4 sq ft 95 sq ft 75 075 sq ft 43 42.5 sq ft Area, bkf . . mean Velocity 6.1 ft/s 6.2 bkf Q 250 cfs 265 cfs 265 cfs mean: 2.4 It max depth bkf range: 2.1-2.74 ft 2.62 ft 2.1 ft 2.75 ft d-max/d-bkf 1.5 1.62 1.82 bank height ratio 1.3 1 3.75 1 Width fpa 55.5 ft 1801 50 ft 75+ ft Entrenchment Ratio 2.4 3.8 1.16 3+ 215 ft 160 ft (155-230) Meander Length 74 ft 70 ft (55-75) Belt Width 104 ft 60 ft (55-75) Radius of Curvature Lm/Wbkf 5 6 RcNWbkf 2.43 2.3 1.72 2.6 1.22 1.25 Sinuosity 0.03 0.03 Valley Slope 0228 0.0275 039 0 0 0.025 Avg. Slope . . mean: 0.0069 mea66:.0039 Pool Slope range:.001-.013 range: 0 .011 1.14 0.0047 mean:.041 nae:.013-.095 0.052 SplSavg 0.18 0.17 0.415 0.18 e.ie.,.... 1.8 2.08 max pool depth 3.93 ft 4.66 It 4.45 ft 3.75 It Dmax-p/Dbkf 2.46 2.88 4.44 2.75 Width-pool 29 ft 26.9 ft 32 ft W-PfW-bkf 1.15 0.63 1.15 Area-pool 48.8 sq ft 57.2 sq ft e-nie_61rf 1.4 1.35 mean: 46.2 range: mean: 68.2 I e4 „c 7a7ft 105 ft r-r spacing P-P spacing/Wbkf - 1.83 - - - 1.45 1.74 3.9 Channel Materials D16 D35 D50 D84 D95 1.5 7 39 2201 450 1.05 15 60 205 470 1 18 34 120 250 1 18 34 120 250 Riffle Count D16 9 1.8 D35 26 20.5 D50 54 40.2 D84 190 135 D95 400 205 Sub-Pavement D16 2 4.6 D35 4.1 21 D50 11 43 D84 46 97 D95 80 110 Bar Sample D16 D35 D50 D84 D95 bSb F L ) $v x,83 -,G use ??? may, ??ioo r3? _ P y 9 .„ ??. cl ' J !?sv? = c/ 5 m h-r Dino/ >>s v - 7-3 -0 Z Sv O.OLS 44, pt-le, 11 1 . ? . OZS' l?,?ou? a`? TItTJ Cj rv\ too Z O 1.4 00M V = W J S Zcc W F- <O cc IUL 3r- - OJ J W mzW >l OV Q N o 0 0 0 0 ,o ?o ?o o ;o 0 30 ?0 10 h0 0 0 0 .o ,o 0 0 0 ,o m m rn m m m m o =.111 -III o =III III- =.111 -III 111- -III J n1EE ~ =III Q _ ME W =III 0 III- =III } 3 p nl- ¢ w J w _n1 !L 0 ME Cc .III w LLJ 111-ILL p =111 ? nl_ ? _nl I Z 1n- p -n1 CL 111- =111 u1= II_ III II- ill I I I Il- III II= I= II= II- 111- Z - - - -- - Z Grove G+ _ a y ' I / J "4 ;1 ?'••?/J J \~ ? .. ?_ P ? ( `? , : ''-?-?1P J'-? 1 ^ Oki 'r •' > ? t 1 ? i NN, % 337 \ t •\ (\ \ \\\/-' -- t/--? '1? \ ?; i ?'` Z ,? ??.. 111 ? \ y?a? r j ( r ? ?\' , ` /?/•- r '\`` \\ \I Z CS __6 \kl It, Z__ oft N?w 8F= I 1 , ;?? l Nil I V111 ?1? _ ? \ f M' ? ?' / //J ? : ? / ? +1 ?',;, / .? cry ? ?' •?.?y. ?_. ---,1 1 1 ? I+ \ ?t --' T • J,? O -J / ,/? 'N ? n'?` \ i t ll?i 1 i' r I ,, =?? ?• y?.:i'^?rr ice/ ??`,'? t'? - ) j cam. N _i» \ ?. ?- X11 i?i? j ;! /t ?;? '?''?J:ar ?'?•?..J/^ i:'• ?.,•^\//! ° Ji 111 •\ ?; ., ?; ; ?, I I 1 •ai ! .,•i ', h \\??„ ,? •,1`+) ,l;` 1 J t CO, '. / :./ / / ?av/ ? ,rll i ? . ??? • \i( VL_ V n ('•NJ \1. -7\ ll i j J r f ' 01. .? V v l/-? I ?? -J 1 1 ? ? ? \ •? ??`• ??"•.?. ??( C) • J ? c 1 ° 50' 0.o(r 1 ° 490.o(r Name: VALLE CRUCIS Location: 036° 12'36.1" N 081° 50' 08.5° W Date: 9/3/2002 ?a?.rQl Creek (?ro??? IZeacl?. Wa?ars?.ad Scale: 1 inch equals 2000 feet z 0 0 to O O IT T VII O V ? m O •° .W L CO) CL Y w m O L L V a cc cc Q. O a ° J C W O O N O O T Co co m v m V W 0 to O ? O O O O O T T O LO O Lf) co co ti (1801) UOI}EA913 C? cn F V m O L a J9 m V m L m J L m a a M 0 o? as N to c O 'r+ cc i+ N m 0 L a c 3 Sm c O J m w 0 0 0 0 0 0 0 o a0 m m m c W G 0 Cl fl- C) 0 (D 0 rn Cl rn Lc) co Cl co (4801) U014en013 IIlI!lIIIII o0 LO o ?n r? ? co as r T V 0 ? a cn Y m m - m ?- v a` m _ L ? J 'C L ? 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C • Fj I V J n Mean Shear stress cotrrersiotr of Ntrenarir,l tnOes to ?rtlatr? l lydratric p 9 L A • AaJlecffwe Ratergs Back Emaim Pmt Stream cross Section Daft Near Banc Stmss Rating rammm (1y R • Strtaoe Fbcd t = yRS 7=67-4U e T t r j(s ?/ Y.L -i r -° Near Bank Shear Stress eaak?ettya?Raains P) R (near bads IM O• g8 Near Bank VlVWW surkm Slope (tlflt) S (?. 6 4/ . r Shear Stress Px" IT nearb=W -ORS R 3 can shear Stress 1 2•.. f ear thndr) Now Banc Near Bank Mean Sbvm Rating Shear Stress C) ?Y ? r? i_ very i.aw cQ_8 LOW 0.8-1-05 Yoderafe 1.06-1.14 Wet 1-15-1.19 very Nigh 12-1-6 Extreme >16 ------------- aar Bank • ? i ?xf+?ew?2 1 Stream Gant F.rotftdlry ---------------------- BEN Rathrg i yZ: 3 ?X{?mQ i A 8 C D F MR - mg Bank Length of eto? Bank Pied Er?osioe Gross S r ( ( ( feet' Co6twd12-_ r 1 S-Gt A; J?+` C? do Circle araoh tVICUPKI ft- Colorado Yelowstorre Cobaon A: Use Sbe Sank Erodbft Rang and Now Bank Skew Rating in conOmmum w1h Fkw 6,Z7 io Rasgea. ISM c4k. lk Stndy Beak HOW Nse Goss SeCOM Prat top of bank-tae of bod.0 cake C. input 1 fod for paint a+osioa Q moss sedbn Colo D. Colo AIM ON No I Hy*dM 9M 4 f- Z rr Q 3 J t Z W H 3 Q J J a J (D M: o -i J Li J Cn Q H W Q W C7 WY pd jaajo Iaine-1 aLua > 1 W ' W - f r--- --? i U w l Z -? O 1 ; H Cl d 1 a LL j W J 1 ?1 / Z 1 W 1 H 1 9 i r > ro 1 j 1 1 z ' a 1 J cD ' 0 O 1 Z - LU V 1 1 LLJ W o i (n 0 U i JJ o W " Z W N I co W <U j W m J LL J a I U O W O j co Zm + I O Z H = Ln H C U x I O O a' I ' Z O cn a0 NDONV9 as 0 ¢ m o ? CD m i w ?0 2 L 8 CD bQ W a) m . 3? W. W .m r 0 Ul ? W f~1 D 6 H J. 0 °o o M a w a w a ¢ o i i 2 a ° ° Q a a ? H l U l l LU i l ll u ()J;7 O m w rl 0 In Q m N <3 O m m 1,- 0 0 r n r" 0 0 to w w 0 m m (D Lo Lo L n L n L n L n N O. tT M n 0 0 V M N .-, O M M h 0 0 r n n ID 0 0 0 0 Lo M w m M Ln 0 0 0 0 C O V d d V ? 'a a ? o Ya m m U O O N N co u ea cc 0 CO 0 0 v a M c 0 4.0 a 0 N O Lf) r O LO O LO co V) O OT rn O ? 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Qo 3 7 M C w O N O r O O O O LO CO O O O O O oi 06 rn r O 1l- O co O rn (6 0) LO (D cr) O (O O O v (U) U014BADIG Lower Worley Creek Restoration Project Reference Reach Data (station 1+20: end) (station 0:~1+20) Reach Name Existing Channel Existing Channel Basin Creek Worley Ck (upper) Proposed Channel Stream Type C4 E4 C4 C4 C4 Drainage Area 1.3 sq mi 1.3 sq mi 8 sq mi 0.96 sq mi 1.3 sq mi Bankfull Width 15 ft loft 30.7 ft 15 ft 16-18 ft Bkf mean depth 1.2 ft 1.6 1.9 ft 1.2 ft 1.22 W/D 12.5 6.25 16.4 12.8 14.7 Area, bkf 18.1 sq ft 16 sq ft 57.4 sq ft 17.6 sq ft 22 sq ft mean Velocity 4.8 ft/sec 4.9 ft/sec 5.4 ft/sec bkf Q --120 cfs -120 cfs -120 cfs max depth bkf 1.7 2.35 ft 2.5 ft 1.7 ft 2.0 ft d-max/d-bkf 1.4 1.47 1.7 1.4 1.6 bank height ratio 1.6 1.4 1 1 1 Width fpa 23 ft. 120 +/- ft 85 ft 50 ft 75 + ft Entrenchment Ratio 1.5 12 2.8 3.3 4.2+ Meander Length 98 ft 98 ft 350 ft 135 ft 114 ft Belt Width 52 ft 40 ft 105 ft 71 ft 60 ft Radius of Curvature 20 ft 20 ft 77-134 ft 20.70 28 ft Lm/Wbkf 6.5 9.8 11.4 9 6.3 Rc/Wbkf 1.33 2 2.54.4 1.38 2.8 Wblt/Wbkf 3.5 4 3.4 4.7 3.2 Sinuosity 1.3 1.26 1.02 1.5 1.2 Valley Slope 0.0116 0.0174 0.014 0.025 0.016 Avg. Slope 0.0144 0.0138 0.014 0.017 0.012 Pool Slope 0.0037 0.0026 0.005 0.0035 0.0024 Riffle Slope 0.026 0.031 0.051 0.041 0.0255 Glide Slope Run Slope Sp/Savg 0.26 0.19 0.39 0.21 0.21 Sr/Savg 1.8 2.25 3.61 2.46 2.04 Sg/Savg Srun/Savg max pool depth 2.88 ft 3.1 ft 1.7 ft 1.8 ft 2.5 Dmax-p/Dbkf 1.7 1.94 0.9 1.5 2 Width-pool 18 ft loft 40.6 ft 15 ft 24 W-p/W-bkf 1.2 1 1.3 1 1.3 Area-pool 28 sq ft 19.2 sq ft 64.4 sq ft 26.8 sq ft 28.6 A-p/A-bkf 1.5 1.2 1.1 1.5 1.3 P-P spacing 38-80 ft 38-80 ft 224 ft 125 ft 90 ft P-P spacing/Wbkf 2.5-5.3 2.1-4.4 7.3 8.3 5 - Channel Materials D16 0.35mm 0.35mm 4.8mm 1.7mm 0.35mm D35 4mm 4mm 20mm 8mm 4mm D50 9mm 9mm 38mm 45mm 9mm D84 100mm 100mm 130mm 160mm 100mm D95 250mm 250mm 230mm 230mm 250mm ?- _\ /! {?`o \\ ? aging station ///5• ' ??? ?11 ~~ V?^,i L??•i\.i 1??_' .4 ??•? f /` l' ???b-???V•JJoo -0///0,,??,. I .'/1 Z N N ?v ? 1) s ? ?0?1?; " - 3.374\ ? ' - ? • ? \`,`? ??11 / ? . J ? //l - / 'ice z o ,o •?% ` \ •? l (? 1? `,?: ? "-? _ v ? ' ? I .,/ - .--y 1? ?0 • 'J' ? r' l" ?.. .o \ , ? r ?. \?o%_ t +, ? e \_._l/ V / \\c y\a ?? i i ? \ ''? 1'•?\`•,?V??`o?`?1 ? 11\ V/ \ X13' 1i 1 ?\ ? I 1 "? \`o ooh\? ; ?1 ooW ?o o C? ky \_ IR 0 1 1 n ! ?-??\ 1` \ \ \"•?`:, I f t (' . 1 i ; /f1 ) j? -: ? ? ,? \ ?` 1? ,i ! ?. I' 11 .?1 ?" \ ! \ z f 1 ) _ Cq- ,. 1 ? ?? Anr ?`I ? -4s?? ?.I ?! 1 _ ? ? o , r- l,-?J 1 11 f • ? n` ?'? •s' r? 6° W 1{, '\? f« I atneyl?r O y 1 ° so' 0.w. 1 ° 49 0.00" 0 0 Name: VALLE CRUCIS Location: 036° 12' 58.8" N 081° 49' 47.1" W Date: 9/3/2002 Scale: 1 inch equals 2000 feet W od e y C +•ee k PNI eJ Re tic L W -,•kr s 4 a c 1 C9 0 0 c7 0 LO N O O M O H ? O V d a a Y UJ ev N J 'X W Q d U d O 0 0 N d w o m eo w N c 0 0 0 N c00o co (Dc o (D co (;aaj) u014ena13 ccoo ccoo + o m zo CO) cc O 1-- co ? r V a c L .?c a. as ? i C U O J a? C ca :r J H d K CL W 0. Y L v a a? 0 J= C9 Cf) ?I I 0 0 0 LO CC) 0 0 CO 0 Lf) LO d w L c CO N O LO v O O Ict O LO M O O m C14 0) _ M co CO co Cfl co OLO ? LO ? LO (4801) U01WA813 0 O N T W le v O C d ? O O CL c c Y O O m+?U U U) C C1 >C N R d W ? U m Q ? C. jE O 3.1 O r r O O r O O O OD 0 d w CD 4) co ? N C O U) O It O M O N O O (4901) U014BA013 co U') 1- t- co co CD co ? co (O to d' N O a .19 L x ? L i ~ 3 V J d L L ? O CL Q. L 'x W i f E f t w w f O CA O co a O co O L d w d V C N B O ce) O N O r O co co COO co co co CD (Joel) uoijengig O 0 0 O 0 c 0 U m .o m a 0 t0 ey V Y m m v m L 0 i.. m 3 0 J m O N ? W m _V t4 Q. r I I I I I I I I i I\ I ? ? O O 0) co 0I- co OLO Nr M N O O r uey; aauil % ani;elnwnD E E 5 TYPICAL BEDFORM/GRADING SEWENCE POOL 6 C F}'F?,E ,?'?Alr / ef11 POOL lbe ®; ?,?, (PoOLIGLtGE BMN FULL *hlo aWAa ?II<All ? 1 SCOUR HOLE / MAZ DEPTH POOL CRO55 VANE CROSS VANE DETAIL FLON ?? 0 ?ER 14 A t L 1 1 a-tzx F III_ III _ PROPOSED BED ELEVATION Itl = III _ 111 III 111 GEOIEZTILE FABR] FDGIER ROCK ftTA"n* A trench shall be dug in a manner that the footer rocks, cr05a header rocks and a MIN of 1/3 of the wing header rocks are buried tra eats the betl surface elevation, RackS are precisely placed -In a hydraulic thumb. Footer roCkS Snall be placed first with header rock S pl aCad on top prior to baCkf i ]ling the trench. In the center (cross) portion the heatler rocks shall be placed so that the top of the header rock IS an el a vat on aouaI to the or pops Bd bad elevat-ton. Geotertile fabric shall be plac ed in the trench with approx. 2 ft. of overlap. Rpck f17] mater- ial shall be 6aCk filled around the fabric. The header rocks on the wing portion shall ba pl a C a a so that they sl DoE up from the bed elevation at the cross portion, to a bankfull elevation and meet the bank at a 20 deg. angle. Header and footer rOCks at both ends shall be tied in SeCUrely t0 the bank to e]iminate the do SS Ibility of water diversion. Roar WO offrAa FOOTER LOG FLOW y BKF WAT SURFACE FOOTER LOG ?A A trench shall be dug along the toe of the bank to a depth of the tlf ameter of the footer log. A pruned foster log shall be placed at the toe of the cnanne7 and the root Matl shall be 0lace" tlirec Cly above it. The ve l oc Ity vectors of the streem of the cnennel are aligned with the trunks longitudinal axis antl will intersect the root mass at a 90 degree angle. A 1-1der may be Placed on the d.-stream side. on top of. and on the upstream side between the rootmass and the bank to brovlde erosion Control. J-HOOK DETAIL 3-7% SLOPE MATER SURFACE 20-30 DEGREES FLOW F007ER ROCK PROFILE VIEW 6KF PLAN VIEW EATER SURFACE FOOTER ROCKS CROSS-SECTION VIEW Q O ? a o O W Z 0 O a H n Q lJ..l CD W O W cn O n O rr n y W l1J Ir U J LU cr_ D Q J cc: 0- 0- D U N W d v L N c 41 c to O U Q IOO 4 •CM Mcc N O mZN ++ C .w w EW 1 >&mm CQ C? ncc wmm n N ? F W acc O Q W ? Q WO Z Z ¢ J N QU J Z J WO OtlJ [OA O 7cr zd¢N. ° a?Z 1r+a?z? 1LX aQ JW« W= wul CLM sgJ? QIZ•1 x¢ UrrJ 1=-J r0 mWO UM mO ILI-IJO XNO Nir OOJ U M 00 OQ fAJfv ?JOJ J[=] TJ W O J ? X<QdT W<JIL QO NO OQ W 3t s ZH mZU XZT IGN S NQ NN2 >-" Z W I.- LL I r T3*_ ZO 1 ?O LLIWO =mp4¢H ZNQ QMM O=>mZ aJIL OJr a1-N 1 1 mm I rd I zNr ¢a ma w3cU wQ as * Q L- *V a Q Q] N L U v J 1-?t Y JM< a ?Y ? JtD WF fAF (OF SGG mg58 M Ol ? W O ZN m ti m m ® ® ® lr W Li Li m Q o W 7 LL L? Q N CD E z O z I- O U "III I- U) Q I N Cf-) H m 10 H m m U Q U) W z ?z W Q zz z U Q z? U Q U n E'nV EInvi I ninwtta1 Consulting Services Inc. February 12, 2003 Ms Cyndi Karoly NC DENR DWQ 2321 Crabtree Blvd. Parkview Building Raleigh, NC 27604-2260 RE: Laurel Creek Restoration Dear Cyndi: 3764 Rominger Road Banner Elk, NC 28604 Ph/Fax: 828-297-6946 0 3 0 le-g,lfc_iv@skybest.com With this letter I'm sending you three sets of plans and permit documents for the referenced project. This is a grant funded restoration project that qualifies for NWP 27 and WQC #3353 to the best of my understanding. Please evaluate and let me know if you agree or if you need any additional information. Thank You. Sincerely, Z?? Jo n C. Vilas President, E'nV Environmental Consulting Services Inc. , Z**3 t R s ? a f /; NWP 27 PERMIT APPLICATION Laurel Creek Restoration January 23, 2003 Applicant: Blue Ridge RC&D, Inc. 1081-2 Old US Hwy. 421 Sugar Grove, NC 28679 Agent: "WV ErrAwnrnental ComuWmg Services Inc. 3764Rominger Rd. Banner Elk, NC 28604 FEB 1 3 7.003 a LIWA-fEn "unl;iY 3ECfljr? E'nV Erwh+onme d Cons "SP•11/iC@S Inc. January 27, 2003 Mr. Tim Smith USACE Asheville Regulatory Field Office 151 Paton Ave, Rm 208 Asheville, NC 28801-5006 RE: Laurel Creek Restoration Project Dear Tim: 3764 Romnpr Road Banner Elk, NC 28604 Ph/Fax. 828-297-6946 e-mail: wccJv@skybesLcom Enclosed is an application for NWP 27 for the referenced project. We are also sending this package to Ron Linville with NCWRC and will soon be sending three sets of plans to NC DWQ. If you have any questions regarding this information please call me at 828-297-6946, thank you. Sincerely, hn C. Vilas President, E'nV Environmental Consulting Services Inc. Cc: Mr. Stan Steury, Blue Ridge RC&D Mr. Ron Linville, NC WRC Upper Laurel Creek Project Application Laurel Creek Design and 3 Existing Conditions Worley Creek Design and Existing Conditions 1 Office Use Only: Form Version April 2001 USACE Action ID No. DWQ No. If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A" rather than leaving the space blank. 1. Processing 1. Check all of the approval(s) requested for this project: X Section 404 Permit ? Section 10 Permit ? 401 Water Quality Certification ? Riparian or Watershed Buffer Rules 2. Nationwide, Regional or General Permit Number(s) Requested: NWP 27 3. If this notification is solely a courtesy copy because written approval for the 401 Certification is not required, check here: X per WQC #3353 4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for mitigation of impacts (see section VIII - Mitigation), check here: ? H. Applicant Information 1. Owner/Applicant Information Name: Blue Ridge RC&D Inc. Mailing Address: 1081-2 Old US Hwy. 421 Sugar Grove, NC 28679 Telephone Number: 828-297-5805 Fax Number: 828-297-5928 E-mail Address: bluerid eg rcd(a skYbest.com 2. Agent Information (A signed and dated copy of the Agent Authorization letter must be attached if the Agent has signatory authority for the owner/applicant.) Name: John C. Vilas Company Affiliation: E'nV Environmental Consulting Services Inc. Mailing Address: 3764 Rominger Road Banner Elk NC 28604 Telephone Number: 828-297-6946 Fax Number: 828-297-6946 E-mail Address: wcc jv@Akybest.com Page 3 of 12 M. Project Information Attach a vicinity map clearly showing the location of the property with respect to local landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property boundaries and development plans in relation to surrounding properties. Both the vicinity map and site plan must include a scale and north arrow. The specific footprints of all buildings, impervious surfaces, or other facilities must be included. If possible, the maps and plans should include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion, so long as the property is clearly defined. For administrative and distribution purposes, the USACE requires information to be submitted on sheets no larger than 11 by 17-inch format; however, DWQ may accept paperwork of any size. DWQ prefers full-size construction drawings rather than a sequential sheet version of the full-size plans. If full-size plans are reduced to a small scale such that the final version is illegible, the applicant will be informed that the project has been placed on hold until decipherable maps are provided. 1. Name of project: Laurel Creek Restoration 2. T.I.P. Project Number (NCDOT Only): 3. Property Identification Number (Tax PIN): 1961-51-4080-000 4. Location County: Watauga Nearest Town: Banner Elk Subdivision name (include phase/lot number): Directions to site (include road numbers, landmarks, etc.): From Banner Elk take Hwy 194 North approx. 4 miles turn left on Rominger Road go approx 1.5 miles bear right on dirt road (&3jng_on Rominger) Go approx. 2.5 miles. Site is adjacent to hav field behind 3 barns and near mail box # 3764. 5. Site coordinates, if available (UTM or Lat/Long): 36 deg 13'23" N, 81 deg, 50' 5" W (Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) 6. Describe the existing land use or condition of the site at the time of this application:Agricultural, hay field and pasture 7. Property size (acres): 196 acres 8. Nearest body of water (stream/river/sound/ocean/lake): Laurel Creek 9. River Basin: Watauga (Note - this must be one of North Carolina's seventeen designated major river basins. The River Basin map is available at http://h2o.enr.state.nc.us/admin/maps/.) Page 4 of 12 Describe the purpose of the proposed work: To restore approximately 1400 linear feet of Laurel Creek and approximately _650 linear feet of Worley Creek immediately above the confluence with Laurel Creek (see project narrative) 10. List the type of equipment to be used to construct the project: Standard construction equipment: track excavator, backhoe dump truck loader 11. Describe the land use in the vicinity of this project: Rural residential, agricultural and undeveloped. Very low density. IV. Prior Project History if jurisdictional determinations and/or permits have been requested and/or obtained for this project (including all prior phases of the same subdivision) in the past, please explain. Include the USACE Action ID Number, DWQ Project Number, application date, and date permits and certifications were issued or withdrawn. Provide photocopies of previously issued permits, certifications or other useful information. Describe previously approved wetland, stream and buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project, list and describe permits issued for prior segments of the same T.I.P. project, along with construction schedules. A USACE 404 permit and a NCDENR 401 permit was obtained previously for the Worley Creek Restoration Project in 1999, the previous project is upstream of the currently proposed work on Worley Creek Previous permit #'s• NC WOC Project # 980342 (issued 5-19-98), USACE 404 # 199830459 (issued 3-15-99) The previous project restored approximately 1600 linear feet of F4/5 channel with a meandering E4/5 channel and created/restored/enhanced over 5 acres of wetlands The previous project area is surrounded and protected by a 13 acre conservation easement The proposed project will not impact the previous project in anyway. V. Future Project Plans Are any additional permit requests anticipated for this project in the future? If so, describe the anticipated work, and provide justification for the exclusion of this work from the current application: No additional 404/401 permit requests are anticipated for this project. VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. The applicant must also provide justification for these impacts in Section VII below. All proposed impacts, permanent Page 5 of 12 and temporary, must be listed herein, and must be clearly identifiable on an accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a delineation map, whether or not impacts are proposed to these systems. Wetland and stream evaluation and delineation forms should be included as appropriate. Photographs may be included at the applicant's discretion. If this proposed impact is strictly for wetland or stream mitigation, list and describe the impact in Section VIII below. If additional space is needed for listing or description, please attach a separate sheet. 1. Wetland Impacts Wetland Impact Site Number indicate on ma) Type of Impact* Area of Impact (acres Located within 100-year Floodplain** es/no) Distance to Nearest Stream linear feet Type of Wetland*** * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, till, excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding. ** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps (FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or online at http:/h.,?tN.fema.eox. *** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond, Carolina Bay, bog, etc.) List the total acreage (estimated) of existing wetlands on the property: approx 10 acres Total area of wetland impact proposed: 0.0 2. Stream Impacts, including all intermittent and perennial streams Stream Impact Site Number (indicate on ma) Type of Impact* Length of Impact (linear feet) Stream Name** Average Width of Stream Before Impact Perennial or Intermittent? (please seci Laurel Creek Fill/ bank grading/flooding 1420 Laurel Creek 35 feet Perennial Worley Creek Bank grading/Fill 490 Worley Creek 18 feet Perennial Page 6 of 12 * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap, dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain), stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included. ** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at ,oww.usgs.sov. Several internet sites also allow direct download and printing of USGS maps (e.g., NAiv%N.topozone.coin, wAi'%v.mavauest.com, etc.). Cumulative impacts (linear distance in feet) to all streams on site: 1910' Perennial, 3. Open Water Impacts, including Lakes, Ponds, Estuaries, Sounds, Atlantic Ocean and any other Water of the U.S. Open Water Impact Site Number indicate on ma) Type of Impact* Area of Impact acres Name of Waterbody (if applicable) Type of Waterbody (lake, pond, estuary, sound, bay, ocean, etc. * List each impact separately and identify temporary impacts. Impacts include, nut are not imutea to: nii, excavation, dredging, flooding, drainage, bulkheads, etc. 4. Pond Creation If construction of a pond is proposed, associated wetland and stream impacts should be included above in the wetland and stream impact sections. Also, the proposed pond should be described here and illustrated on any maps included with this application. Pond to be created in (check all that apply): X uplands X stream ? wetlands Describe the method of construction (e.g., dam/embankment, excavation, installation of draw-down valve or spillway, etc.): An off-line pond is to be constructed in an excessively wide and deep portion of existing channel and adjacent upland areas. The pond will serve to generate fill material needed on the project while reducing fill requirements. The pond will be fed .y a piped diversion from upstream. Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): Balance cut and fill on the project, aesthetics, recreation. and habitat enhancement. Size of watershed draining to pond: approx 2 acres. Expected pond surface area: 0.3 acres Page 7 of 12 VII. Impact Justification (Avoidance and Minimization) Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide information related to site constraints such as topography, building ordinances, accessibility, and financial viability of the project. The applicant may attach drawings of alternative, lower-impact site layouts, and explain why these design options were not feasible. Also discuss how impacts were minimized once the desired site plan was developed. If applicable, discuss construction techniques to be followed during construction to reduce impacts. The proposed work and associated impacts are proposed to restore and stabilize previously altered channel areas that are currently unstable and eroding The primary nuraose of this project is to provide an overall improvement to water quality. The methods proposed (root wads, sod mats willow transplants and rock vanes) are designed to provide the desired stability as well as enhance instream habitat. VIII. Mitigation DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC Division of Water Quality for projects involving greater than or equal to one acre of impacts to freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial streams. USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide Permits, published in the Federal Register on March 9, 2000, mitigation will be required when necessary to ensure that adverse effects to the aquatic environment are minimal. Factors including size and type of proposed impact and function and relative value of the impacted aquatic resource will be considered in determining acceptability of appropriate and practicable mitigation as proposed. Examples of mitigation that may be appropriate and practicable include, but are not limited to: reducing the size of the project; establishing and maintaining wetland and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of aquatic resource functions and values by creating, restoring, enhancing, or preserving similar functions and values, preferable in the same watershed. If mitigation is required for this project, a copy of the mitigation plan must be attached in order for USACE or DWQ to consider the application complete for processing. Any application lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as incomplete. An applicant may also choose to review the current guidelines for stream restoration in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at http://h2o.enr.state,nc.us/ncwetlands/strm.gide.html. 1. Provide a brief description of the proposed mitigation plan. The description should provide as much information as possible, including, but not limited to: site location (attach directions and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet) of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view, preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a Page 8 of 12 description of the current site conditions and proposed method of construction. Please attach a separate sheet if more space is needed. A permanent conservation easement with average width of 30 feet either side of the stream is proposed over most of the project. Easement width will be reduced in the vicinity of the existing structures 2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration Program (NCWRP) with the NCWRP's written agreement. Check the box indicating that you would like to pay into the NCWRP. Please note that payment into the NCWRP must be reviewed and approved before it can be used to satisfy mitigation requirements. Applicants will be notified early in the review process by the 401/Wetlands Unit if payment into the NCWRP is available as an option. For additional information regarding the application process for the NCWRP, check the NCWRP website at http://h2o.enr.state.nc.us/UTD/index.htm. If use of the NCWRP is proposed, please check the appropriate box on page three and provide the following information: Amount of stream mitigation requested (linear feet): 0 Amount of buffer mitigation requested (square feet): 0 Amount of Riparian wetland mitigation requested (acres): 0 Amount of Non-riparian wetland mitigation requested (acres): 0 Amount of Coastal wetland mitigation requested (acres): 0 IX. Environmental Documentation (DWQ Only) Does the project involve an expenditure of public funds or the use of public (federal/state/local) land? Yes X No ? If yes, does the project require preparation of an environmental document pursuant to the requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)? Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA coordinator at (919) 733-5083 to review current thresholds for environmental documentation. Yes ? No X If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a copy of the NEPA or SEPA final approval letter. Yes ? No ? X. Proposed Impacts on Riparian and Watershed Buffers (DWQ Only) It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to required state and local buffers associated with the project. The applicant must also provide justification for these impacts in Section VII above. All proposed impacts must be listed herein, and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ Page 9 of 12 Regional Office may be included as appropriate. Photographs may also be included at the applicant's discretion. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify )? Yes ? No X If you answered "yes", provide the following information: Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer mitigation is required calculate the required amount of mitigation by applying the buffer multipliers. Zone* Impact (square feet) Multiplier Required Mitigation 1 3 2 1.5 Total • Lone 1 exten0s out Su feet perpenoieuiar worn near oanK of cnannei; "no Z. uxtenub an additional 20 feet from the edge of Zone 1. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 2B .0242 or .0260. XI. Stormwater (DWQ Only) Describe impervious acreage (both existing and proposed) versus total acreage on the site. Discuss stormwater controls proposed in order to protect surface waters and wetlands downstream from the property. NA XH. Sewage Disposal (DWQ Only) Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of wastewater generated from the proposed project, or available capacity of the subject facility. NA X1H. Violations (DWQ Only) Page 10 of 12 Is this site in violation of DWQ Wetland Rules (I 5A NCAC 2H .0500) or any Buffer Rules? Yes ? No X Is this an after-the-fact permit application? Yes ? No X XIV. Other Circumstances (Optional): It is the applicant's responsibility to submit the application sufficiently in advance of desired construction dates to allow processing time for these permits. However, an applicant may choose to list constraints associated with construction or sequencing that may impose limits on work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and Threatened Species, accessibility problems, or other issues outside of the applicant's control). -,23-0 Applicant/Ag is Signature To- kh e• U1Date (Agent's sig tune is valid only if an authorization letter from the applicant is provided.) US Army Corps Of Engineers Field Offices and County Coverage Asheville Regulatory Field Office Alexander Cherokee Iredell Mitchell US Army Corps of Engineers Avery Clay Jackson Polk 151 Patton Avenue Buncombe Cleveland Lincoln Rowan Room 208 Burke Gaston Macon Rutherford Asheville, NC 28801-5006 Cabarrus Graham Madison Stanley Telephone: (828) 271-4854 Caldwell Haywood McDowell Swain Fax: (828) 271-4858 Catawba Henderson Mecklenburg Transylvania Raleigh Regulatory Field Office Alamance Durham Johnston Rockingham US Army Corps Of Engineers Alleghany Edgecombe Lee Stokes 6508 Falls of the Neuse Road Ashe Franklin Nash Surry Suite 120 Caswell Forsyth Northampton Vance Raleigh, NC 27615 Chatham Granville Orange Wake Telephone: (919) 876-8441 Davidson Guilford Person Warren Fax: (919) 876-5283 Davie Halifax Randolph Wilkes Washington Regulatory Field Office Beaufort Currituck Jones US Army Corps Of Engineers Bertie Dare Lenoir Post Office Box 1000 Camden Gates Martin Washington, NC 27889-1000 Carteret* Green Pamlico Telephone: (252) 975-1616 Chowan Hertford Pasquotank Fax: (252) 975-1399 Craven Hyde Perquimans Pitt Tyrrell Washington Wayne Union Watauga Yancey Wilson Yadkin *Croatan National Forest Only Page 11 of 12 Blue Ridge Resource Conservgaen & Development Council, Inc. su 1061-2 OM US l ? 421 s"-As m Fix: a"14828 swn SWY &W C"Cw. U" wbeen= t?so bAM.oa - eiar wrtwo? +?. ?..?ww January 22, 2003 NC DENR Division of Water Quality MSC-1921 Raleigh, NC 27699 To Whom It May Concern: Buck Engineering of Cary, North Carolina is authorized to be our agent in the Laurel and Worley Creels restoration project to be completed in Spring of 2003. If you have questions, please give me a call at 828-297-5805 or email me a sstew-yaboone.net. Sincerely, A,-., Stan SteuryACoordinato Blue Ridge RC&D Council, Inc. 1 % o 1 ` ++,, cam, / I— - \wN Z__ do -Z • 1 ? it 1t .+nu.. l ,Y' ?-?- ?. - 4 v- Q) i i `, /?? . ? tai f, ?'_" '-?,?.''??*y'?. ( i ? _ '\?, ?•-'._-_/---..:;`.. - ?'?,, ?? `; ? +; y ? f \ \ ?, `" • 15',x' ? ? V? ( ?. ? ?? ?'?•,,. ? J fo ?, \ ?•°• I i jf ?r, r t t ? ? ? ' . ?J, ( ?'f 'fit `? ? l-? t S ? ? t? ?•-•?, t ?r _ i f B' i`1 '1+1 ?.?' y 4 ?q 6* W 1 t 17777 o 01°50'0. 1° O Name: VALLE CRUCIS Location: 036° 13'22.7" N 081° 49'56.8" W Date: 1/6/2003 Caption: Laurel/Worley Creek Project Area Sale: 1 inch equals 1000 feet Copyright (C) 1997, Maptech, Inc 2 Project: UPPER LAUREL CREEK RESTORATION Location: Watauga, NC PROJECT NARRATIVE General: The Upper Laurel Creek Restoration Project will restore approximately 2000 linear feet of mountain trout stream in northwestern Watauga County, NC (see location map). The project involves work on two streams, Laurel Creek (approx. 1500 linear feet) and Worley Creek (approx.500 feet). Worley Creek, at the project site, has a drainage area of approximately 1.35 sq. mi. and contains a healthy population of native Brook Trout. Another reach of Worley Creek approximately 2000 feet upstream of the current project reach was restored in 1999. Laurel Creek at the project site has a drainage area of 2.2 sq. mi. Laurel Creek is also a trout stream but contains primarily stocked populations of Brown and Rainbow Trout. This project was identified as a high priority restoration site in the July 2000 Watauga River Basin Riparian Corridor Conservation Plan funded through NC CWMTF grant and prepared for the Blue Ridge Rural Land Trust. The current project is funded through a CWMTF grant to Blue Ridge RC&D. The contract for this project was awarded to Buck Engineering of Cary, NC and E'nV Environmental Consulting Services Inc. of Banner Elk, NC. The design objectives of the Upper Laurel Creek Restoration Project are to correct severe stream bank erosion and channel migration problems. Also to provide an accessible floodplain, create/enhance riparian wetlands, and stabilize and enhance aquatic habitat to these designated troutwater streams. The existing channel is a F4b in the upper part and a B4 with major problems in the lower section. The proposed channel is a stable B4. The Worley Creek portion of this project will involve regrading and stabilizing of streambanks to obtain a bankheight ratio of 1.0 and correct bank erosion problems. Some pattern adjustment will also be incorporated to establish stable meander bends and higher quality buffer in the vicinity of existing structures. Upper Laurel Creek: The upper end of the project reach lies in open mixed hardwood forest, terraces with a thick Rhododendron subcanopy and hardwood canopy flank the valley floor. The lower end of the project reach is bordered by a pasture/hayfield to the east (river right) and a large rocky floodplain with numerous wetland pockets to the west. In addition to the wetland pockets located in the large floodplain area, there are two additional small pockets (approximately 900 sq. ft.) along the western edge of the valley near the upper end of the project reach (see site plan). This section of Laurel Creek has a history of alteration. Although the specific nature of the alterations has not been confirmed, there is abundant evidence of past activities. The most significant feature is a large berm 8-10 feet high and 400 feet long that confines a long straightened run through the middle portion of the project reach. The upper section contains areas that appear to have been graded down two feet as well as numerous mounds of earth. The lower section also contains numerous mounds of earth. All of these mounds have been in place for at least 50 years as evidenced by the size on trees growing out and interviews with long time residents. It is suspected that most of the berms and mounds are related to past sand and gravel mining operations. A large section of abandoned channel exists along the western edge of the valley that likely was Laurel Creek at one time. The reach immediately above the project reach is a stable B4. Farther upstream is mostly AM with short sections of 133/4 and Aa+. Below the project reach the valley broadens with a flatter slope; stream types are mostly C and F. There is an existing ford at approximate station 8+00 that will be replaced in the new channel at an appropriate location. Lower Worley Creek: The Lower Worley Creek project reach extends from the confluence with Laurel Creek 500 feet upstream. The upper portion of the Worley Creek reach is bordered by a hay field on the left and mowed grass area with barns and a garden on the right. A long established ford exists in the middle of this reach and will be reconstructed at an appropriate location on the restored reach. The lower portion flows through a forested area with large earth berms and mounds left from past activity. These berms appear to have caused problems in this area by limiting floodplain functionality and confining the channel laterally. Existing Condition: Upper Laurel Creek: The upper portion of the project reach (station 0+00 - station 3+90) is predominantly F4b and contains severely eroding stream banks. Vertical and undercut banks 5 to 10 feet high are common, split flow and excessive over widening are also widespread. In one area several large trees have fallen into the channel due to severe bank erosion. This section of the existing channel transitions from severely incised to fully entrenched. From approximately station 3+90 to 7+00 the channel is straight and confined between a steep eroding bank (right) at the edge of a pasture and a large berm 8-10 feet high (left). The lower portion of the project reach is mostly B4 with a variety of problems. The left berm ends (near station 7+20) the bank becomes relatively flat and sandy. The streambed splits again near station 7+40 and does not converge until approx. station 9+50. The left bank through this section is eroding and unstable. After converging, Laurel Creek straightens through approx. station 13+00. The right bank height increases through this area becoming steep and eroded in places; the accessible flood plain is located on river left. Channel bedform and pattern also are in need of adjustment in this area. From station 13+30 where Laurel Creek takes a sharp left turn through the end of the project reach, Laurel and Worley Creeks are merely separated by a 20 foot-wide bankfull bench, this bench has been frequently overtopped and is gradually being eroded away. If no action is taken in this area the confluence of Laurel and Worley Creeks will soon be shifted upstream approximately 100 feet Sinuosity in the existing channel is low (1.04) due largely to past channelization and the presence of the large berm through the middle of the reach. Lower Worley Creek: Upstream of the proposed restoration, Worley Creek is a stable E5 through an area with a broad accessible floodplain and wetlands. Problems with incision begin just above the beginning of the project. The bank height ratio in the upper part of the project reach is 1.3 to 1.4. Existing stream type in this area is an incised E4. Elderberry, willow and blackberry stands populate the riparian zone through the pasture area (Station 0+00 - Station 2+00). The left bank height increases between station 1+00 and 2+00, becoming severely eroded through this area. The lower section, from station 2+00, continuing through its confluence with Laurel Creek (station 5+00), Worley Creek is a C4 stream type. Throughout this portion of the project reach the bank height ratio is 1.4 to 1.6. In addition, large berms that confine the channel have resulted in several areas of bank erosion and a limited sinuosity. Project description: Upper Laurel Creek: Laurel Creek will be restored as a priority 1-2 project, a proposed B4 channel of approximately 1500 linear feet will be constructed to replace the existing channel. The upper 800 +/- feet is a priority 1 design and the lower 700 +\- is a priority 2 design. The design is based on reference reach data collected from two reaches of Laurel Creek, one above the project reach and one below (see Reference Parameter Spreadsheet). Each reference reach used in the Laurel Creek design was chosen due to similarities in hydrophysiographic regioning, drainage areas, stream type and other desired characteristics. Reference reaches listed in the Reference Parameter Spreadsheet as well as others in the Watauga River Basin, including the Watauga and Elk River gages, were incorporated into mini-regional curves used to calibrate design parameters. Proposed channel dimension and profile parameters were set to ensure channel competency based on entrainment calculations. Channel pattern parameters were designed in accordance with regional dimensionless ratios and site constraints. Several significant site features and practical constraints influenced the proposed design. Due to high debris potential of the project reach it was considered essential to design broad, functional and very accessible floodplain, as well as to provide a channel with sufficient energy to move the largest available particles. The priority one restoration is proposed in the upper part of the project where the existing channel is most severely incised, this was found to be a more cost effective approach than constructing a floodplain for the existing channel through grading. This also allows this portion of the project to be constructed in the dry. The existing large berm will be removed by using it as fill for the existing (to be abandoned) channel. There is a substantial bedrock vane that extends into the area of the proposed channel in the middle of the reach. This bedrock is exposed in a section of abandoned channel (possibly old Laurel Creek). To decrease the likelihood of grade problems due to excessive bedrock, the proposed channel was routed into a section of the old abandoned channel through this area (proposed stations 5+25 to 7+50). The need to balance cut and fill locally was a significant budget issue and was resolved by incorporating a pond in the widest and deepest portion of the existing channel. This area of abandoned channel would have required approximately 2600 cubic yards to fill. At the lower end of the project reach Laurel Creek will be rerouted to allow for greater separation from Worley Creek. The berms and mounds in this area will be removed or pulled back away from the proposed channel. Existing wetlands located in the project area will be enhanced due to their location on the proposed active floodplain and riparian fringe. Existing wetlands will generally be enlarged and several areas of new created wetlands will be established. Channel stability will be achieved through a combination of techniques and measures. All areas of restored channel will be constructed with a design bank-height ratio of 1.0. Channel slope will be controlled with rock cross-vane structures at the head of all riffle sections. Channel bends will be stabilized with a combination of root wads, rock vanes and J-hook vanes. Channel banks will generally be graded with low angle banks and seeded. Where sod is accessible (lower part of reach) it will be used extensively to line graded banks. Where needed erosion control matting will be installed Lower Worley Creek: Beginning at upper end of the project (station 0+00) and extending through the incised area (station 2+00) the restoration objective is to decrease the bank height ratio allowing the stream to access its floodplain. This shall be achieved by raising the bed elevation, with grade control structures, and creating a bankfull bench that extends an average of 10 feet on either side of the stream. The bankfull bench will be constructed to encourage wetland creation throughout the upper part of the Worley Creek reach. This work will result in a change in stream type from a incised E4 to a stable C4. Extending from station 2+00 through the end of the project the priority 2 restoration utilizes the existing mixed hardwood riparian zone. The principal objective in the lower part of the reach is to create a functional, accessible floodplain by restoring a bank-height ratio of 1.0, removing berms and mounds, and adjusting pattern. The permanent ford will reconstructed in the vicinity of proposed station 1+00. Channel stability will be achieved through a combination of techniques and measures. All areas of restored channel will be constructed with a design bank-height ratio of 1.0. Channel slope will be controlled with rock cross-vane structures at the head of all riffle sections. Channel bends will be stabilized with a combination of root wads and rock vanes. Sod mats and Willow transplants will be used to line graded stream banks. Planting Plan: The riparian zone and buffer areas will be revegetated with a combination of trees, shrubs and herbaceous plants. All disturbed areas will be seeded with temporary cover (rye or millet depending on time of year) immediately following completion of work in those areas. Permanent cover will be established at the end of the project. Trees and shrubs will be planted throughout the riparian zone (except shrubs-only in powerline easements) at a density sufficient to achieve a forested condition, approximately 400 stems per acre. Species to be planted include: River Birch, Green Ash, Red Maple, Red Oak, Poplar, Black Willow, Sycamore, shrub Willow, shrub Dogwood, and Alder. Buffer: A permanently protected buffer area will be established around the restored areas of both Laurel and Worley Creeks. The buffer width will be an average of 30 feet from the top of bank on each side of the proposed restored channels. The buffer width will be reduced somewhat in the vicinity of the existing structures and garden along Worley Creek. The buffer area will be placed into a permanent conservation easement to be donated to a local land trust. Two permanent fords currently exist within the project area, one over each creek; these will both be replaced. The landowner also retains the right to construct a bridge across each of the streams in order to allow vehicular access to large sections of the property that would otherwise be restricted from public road access by proposed and existing easements. Such crossing locations are not planned nor have any locations been identified. Any future crossings will involve spanning structures and will be planned in accordance with all regulations applicable at the time such development is proposed. Monitoring Plan: An as-built survey of the restored channels will be conducted following construction and after one or two flushing flows. Additional monitoring activities are to be conducted by others. W a ON O p 0 Q W Cc Q W ?! 7 O a Y W W p cc U W 9 J J 3 Z ZZ O H p W = m ZU3 C.) ?. U H cn J N H M O L cl: W W o *? ' J O , .o n n 1? ? F 5?Z g: ?W 1{ak wu Ala -am town F 4 Q L o U c Q `? o s S a + ro ??77ff w O ? ??q uo ~ d cn4 W Y g' 'Otl ?aarl [axai U Y? W Q . O ? Y ?. W LLJ U m $ J w y . / J im o m ? ^v I N3UWfl m Q Q 6 3C ? w O ? J O NN p N 6 N y ?? N Z W ? QQ O W W g 2. w? 4 g 8 a ~ II I? I to wm um am* I 3 M W >- z £ < I-Z az z w F m za Hz m= m=N`>BWy? 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Zw (n Z Y Q W In O o a Um a- 0 zm zm a H I o mr w J Q x w v m 0 r r zz J_ EL LLj f c y L C O ) c O V d V .Q A H m OC c m D Y m d L V L cc J D Y C N .G m ? E 0 m c a o ? 0 M 0 N O r O O co Lo ? O co O LO ? r A.P OD ti V- (6 r r r r (?}) U014BAD13 O C O V O N V H O O a c a? d 0 Y L V d L J D Y C R m O w m ? o O cr) O N O r O O CO O ? O co O LO O to m L[7 r ? ao r-: ?O r r r ? ? r ?- (?}) UOIIEAS13 Laurel Creek Design Reference Parameter Spreadsheet Laurel Creek above Laurel Creek near Existing Condition Proposed Laurel Creek Reach Name project River Laurel Creek Proj. Stream Type 84 B4 Fob B4 Drainage Area 2 sq mi 7.1 sq mi 2.2 sq mi 2.2 sq mi Bankfull Width mean: 25.3 ft range: 23-29.5 It 47 ft 43 ft 26.5 ft mean: 1.6 It range: 37-1 89 It 1 1.62 ft 1.002 ft 1.6 ft Bkf mean depth . . 9 29 42.9 W ID 41116 - mean: 40." It range: 38.7-43.4 sq It 95 sq ft 75 43.075 sq ft 42,5 sq it Area, bkf . mean Velocity 6.1 ft/s 6.2 bkf Q 250 cfs 265 cfs 265 cfs max depth bkf mean: 2.4 ft range: 2.1-2.74 ft 2.62 It 2.1 ft 2.75 It d-max/d-bkf 1.5 - 75 3 1 bank height ratio 1.3 1 . Width fpa 55.5 ft 180 ft 5C ft 75+ ft Entrenchment Ratio 2.4 3.8 1.16 3+ 215 it 160 ft (155-230) Meander Length 74 ft 70 It (55-75) Belt Width 104 ft 60 It (55-75) Radius of Curvature 5 8 LmMbkf 43 2 2.3 Rc/Wbkf . 72 1 2.6 W bh/W bkf . 1 22 1.25 Sinuosity !!? . Valley Slope W Avg. Slope "1039 228 w&0275 .0.025 mean: 0.0069 mea6:.0039 Pool Slope range:.001-.013 range: 0-.011 1.14 0.0047 mean:.041 Riffle Slope range:.013-.095 0.052 Glide Slope Run Slope 0 18 0.17 0.415 0.18 Sp/Savg . 08 2 Sr/Sang 1.8 . SglSavg Srun/Savg max pool depth 3.93 ft 4.66 It 4.45 ft 3.75 It Dmax-olDbkf 2.46 2.88 4.44 qML Width-pool 29 ft 26.9 ft oc It 0.63 VAII W-pfW-bkf 48.6 sq ft 57.2 sq ft Area-pool A-p/A-bkf 1.4 1.35 mean: 46.2 range: mean: 68.2 78 range: 21-118 19 74.7 ft 105 It P-P spacing - P-P spacing/Wbkf Channel Materials D16 1.5 1.05 1 1 D35 7 15 18 18 D50 39 60 34 34 D84 220 205 120 120 D95 450 470 250 250 Riffle Count D16 9 1.8 D35 26 20.5 D50 54 40.2 D84 190 135 D95 400 205 Sub-Pavement D16 2 4.6 D35 4.1 21 D50 11 43 D84 46 97 D95 80 110 Bar Sample D16 D35 D50 084 D95 Sv ?? ?? 2 v Svc ?1S_ .? ?sv k41 t,-* ?? ? ? sNs- ??? z3- ??-•??.? n?eu? S'a sM-Y• Sod 83 ?r. au,? ey, .. J?s? ?? ?4 _ 9 5 m M 5L ak I>sv - D. O.OL$" RIO Gs- 0 (o q a ?T1o,? a Ct sr lof.Q 'Stfl, 100 i Z O N N F- O 4 10 WX Z J ZLL W F- ?da Q? a 0 X a - a. a W °c§ J ca OW QZ W_ ou UJI I / Cr OW 0O W RU) O4. 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V m L m J L m O. 0 CD a) N AD c O ,? vI _m O L CL ?a c m c O J M C r W 0 0 0 T- 0 0 a? 0 O 00 m m c G 0 0 O 0 co 0 rn 0 rn U) 0 0 0 (4891) U01; BA013 I l l l l l i l l l o LO LO C) LO r` r- co C? a) T T W a) V ? O cc am Y d L ? v a` as _ L cc cc .- -j M L CL 'as CL c o J CD w 0 Iq 0 v M T" d r m V c L LO O r-- co CO (4001)U01MAa19 0 T r O r O LO LO O N L C a? o d m C O _ K V L Y = J L V X W G. a0. C. C ea J ? O O O ti !D O ? M N ?- O O OO I? Cfl O O O O ? O O O O O O O M O M O r r (4081) U014BA813 O N N O N O O N O O T- O co V- O r O (O r O O T O r O M V O _N .. O m O d O V C O O O co O I- LO co O O O lqr O M O N O V- O O O r 0 0 N CO as C) 0 N OD r CD Z O WO .O N IL Y X fy = d ? L U - o m o ca o J ? 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M C O N O T O O O CA O co O O O O CA T 0) 0) T rl- CA O CU O O O d' O O CO O rn CA rn (;j) U014BAOIS Lower Worley Creek Restoration Project Reference Reach Data (station 1+20: end) (station 0:-1+20) Reach Name Existing Channel Existing Channel Basin Creek Worley Ck (upper) Proposed Channel Stream Type C4 E4 C4 C4 C4 Drainage Area 1.3 sq mi 1.3 sq mi 8 sq mi 0.96 sq mi 1.3 sq mi Bankfull Width 15 ft loft 30.7 ft 15 ft 16-18 ft Bkf mean depth 1.2 ft 1.6 1.9 ft 1.2 ft 1.22 W/D 12.5 6.25 ,, 12.8 «...14.7 Area, bkf 18.1 sq ft 16 sq ft 57.4 sq ft 17.6 sq ft 22 sq ft mean Velocity 4.8 ft/sec 4.9 ft/sec 5.4 ft/sec bkf Q -120 cfs -120 cfs -120 cfs max depth bkf 1.7 2.35 ft 2.5 ft 1.7 ft 2.0 ft d-max/d-bkf 1.4 1.47 .7 1.4 176 bank height ratio 1.6 1.4 1 1 1 Width fpa 23 ft. 120 +/- ft 85 ft 50 ft 75 + ft Entrenchment Ratio 1.5 12 ,. 2.8 3.3 + Meander Length 98 ft 98 ft seew , 135 ft t?Wft Belt Width 52 ft 40 ft 105 ft 71 ft 60 ft Radius of Curvature 20 ft 20 ft 77-134 ft 20.70 28 ft Lm/Wbkf 6.5 9.8 ++1:4 9 a6.3 Rc/Wbkf 1.33 2 .4 1.38 01.8 Wblt/Wbkf 3.5 4 3.4 4.7 3.2 Sinuosity 1.3 1.26 62 1.5 w42- Valley Slope 0.0116 0.0174 .014 0.025 0.016 Avg. Slope 0.0144 0.0138 W14 0.017 01012 Pool Slope 0.0037 0.0026 0.005 0.0035 0.0024 Riffle Slope 0.026 0.031 0.051 0.041 0.0255 Glide Slope Run Slope Sp/Savg 0.26 0.19 0.39 0.21 0.21 Sr/Savg 1.8 2.25 3.61 2.46 2.04 Sg/Savg Srun/Savg o max pool depth 2.88 ft 3.1 ft 1.7 ft 1.8 ft 2.5 Dmax-p/Dbkf 1.7 1.94 0.9 1.5 2 Width-pool 18 ft loft 40.6 ft 15 ft 24 W-p/W-bkf 1.2 1 1.3 1 1.3 Area-pool 28 sq ft 19.2 sq ft 64.4 sq ft 26.8 sq ft 28.6 A-p/A-bkf 1.5 1.2 1.1 1.5 1.3 P-P spacing 38-80 ft 38-80 ft 224 ft 125 ft 90 ft P-P spacing/Wbkf 2.5-5.3 2.1-4.4 8.3 Channel Materials D16 0.35mm 0.35mm 4.8mm 1.7mm 0.35mm D35 4mm 4mm 20mm 8mm 4mm D50 9mm 9mm 38mm 45mm 9mm D84 100mm 100mm 130mm 160mm 100mm D95 250mm 250mm 230mm 230mm 250mm "/ AIR 40 GrONve 3379 40- VI\ ;> t ? / ? • • ? \ ', ? %r ! '? ? /t i , , r ) \\ t ? . , i t it ?-- ? ? it •.i-' v ? _.' Oil _ _ • I : I Is ! N ? N i ??! l`-J V+F' ? •' "? ?-. L I ? ? } ( - o Cr_ ` . = ?"?" ?_ tr t pu -J'( ? ? LSath?nY C (? ° so' 681 0.00° 681- 49-1 0.00" T Name: VALLE CRUCIS Location: 036° 12'58.8" N 081° 49'47. 1" W Date: 9/3/2002 Scale: 1 inch equals 2000 feet Wodey C+cek l?w?eG? IZeticL W-,44r-s 4ac? ,?) 4 . !, 3 n,: 1 O O M 0 H ? O v d CL a IM m c L 0 U J of i C ? H ? K i W d a? L V d L O C9 F f i l O 0 M O LO N 0 0 N w o ? LO V T w N C O O T O LO o co co Fl- to LO It m C14 co co co t0 co co co (4001) U014BA813 0 T 0 0 0 LO co ?O M ?D 0 H OD i V- V d .O O a L JC a m ? i C U O . J i CJf RS w+ J Vl L. K M W fl. Y L U d L O G co IT ce) C%4 a CD co co co to LO (4881) UOIIBA013 0 O co Cl LO LO d w o m O V L R N 0 LO O O O LO M O O M co r- LO LO LO LO LO 0 W O i d ? O CL c c Y O O V V1 3XN R d W J L U d fl, a L O ?i T O O 'co co CO (4081) U014BA013 • O N T O T T O O T O O O CO O CD I O 4) CO c 24 c O LO O O M O N O T O co ' ( C ^ D O U t *) 0 0 rn C) OD 0 p- tC d' N ? O a d K as U m L L ?U J 4) L L G) O CL CL N x w 0 CC) O Lf) a? 4- d c w N_ Ict O M 0 N O r co P- c0 co co to d co CC) CO (4801) U014BA813 M CO -}- O N co 0 0 0 C) 0 T- 0 V 0 .Q m a c 0 cc cc V Y d d ?L? V d L 2O 7 L 3 0 J 0 0 T- 0 0 0 C) 0 0 O> co fl- co o ICT uew aaug % ani;elnwnD 0 0 0 M N E E m o N m _v .Lr t4 CL + o 0 5 TYPICAL BEDFORN/BRADINS SEM ENCE PODL ?'?I,QIF GG` plG ? P Pohl POOL I. JPOOL IGVl? BMKFLLL 011 MWAM / I SCOdR MOLE MO DEPTH POD CR055 V?fE CROSS VANE DETAIL FLOW OLECOUR ? ao-x s t t 1 1 e-IZz F III = III _ PRCAOSEO BEG ELEV<IIGN III=III= III 111 111 GEGTEYTiLE FABRI FOOTER ROGx *WAU ATI* A trench shall be dug in a manner that the footer rocks. cross header rocks and a MIN of 1/3 of the wing header rocks are buried beneatn the bed surface elevation. Rocks are precisely placed with a hydraulic thumb. Footer rocks shall be placed first with nea0er rocks 038cso on top prior to backf filling the trench. In the center (cross) portion the header rack5 sha 11 be p]ac ed so that the top of the header rock is an elevation aaual t0 the proposed bed elevation. Geotextile fabric shall be placed in the trench with a00r Ox. 2 ft. of overlap. ROCk fill mater- ial shall be back fille0 ar Dund the fabric. The header rocks on the wing portion snal7 be placed so tnat they slope up from the bed elevation at the cross portion, to a bankfu1] elevation and meet the bank at a 20 deg. angle. Header and footer rocks at DOth ends sha7] be tied in securely to the bank to eliminate the 00Ssibility of water diversion. marr Wo oErAzL FOOTER LOG FLOW L BKF W T SURFACE FOOTER LOG PWTER AM A trench Shall be dug along the toe of the bank to a depth of the diameter of the footer log. A pruned footer log Shall be Dlac etl at the toe of the cnanneI and the r00i watl sha]7 be p18CPtl tl]rPCt1y above it. The velocity vecto s of the Stream of the channel are aligned wi to the trunks longitudinal axis and wi 11 intersect the rd 0t mass at a 90 degree angle. A boulder may be placed on the downstream Side. on toR Of. and On the Upstream side between the r00tmass and the bank to provide Pr09 ion Control. J-HOOK DETAIL 3-7% SLOPE 20-30 DEGREES FLOW PLAN VIEW EATER SURFACE BKF -77 FOOTER ROCKS CROSS-SECTION VIEW PROFILE VIEW UPPER LAUREL CREEK PROPOSED E' nv Environmental Consulting Services Inc. 3764 Rominger Rd. Banner Elk, NC 26604 ph/fax - (826) 297-5946 *TEMPORARY MIX: ( ITHIN 16 DAYS OF COMPLETION OF LAND DISTURBING ACTINITY IN ALL DISTURBED AREAS) -BROWN TOP MILLET (FARM SEASON) -WINTER RYE (COOL S ASON) *P RMANENTBE D MIX: (SPFIACD IIFAN ELODISTURBED FLOODPLAIN AREAS) *PASTURE MIX: RBED IOTHN ALL DI ORCHARDTGRASS ANDTRED CLLOVER 15' BUFFER 30' BUFFER Rominger Rd. VEGETATION PLAN PR POSED P ND Laurel Creek Rd. Him emewom Pnw{ RAW ® B' 8FiM18 AND BEER BUFFER BILK) F ® !a' BMW AND SEED BUFFER BA8 ALdERLL BUM 30' EXISTING, UNDI8TUR9ED BUFFER N/A ® POPLAR. PI BIN 30' TREE AND SEED BUFFER [a. ±FE"Fl JB G EXISTING UNDISURBED 8I y?M LL TAG Y M CHANNEL STABILIZATION TYPICAL CHANNEL CROSS-SECTION 030164 NWP 27 PERMIT APPLICATION Laurel Creek Restoration January 23, 2003 Applicant: Blue Ridge RC&D, Inc. 1081-2 Old US Hwy. 421 Sugar Grove, NC 28679 0 Up *--? _V L? LJ w S x S m? i f FEB 13 2003 b''LR"d05 S0EC'TPt0N Agent: n... E'nV Ern mnmefal Consulting Services Inc. 3764Rominger Rd. Banner Elk, NC 28604 L-J EW rnvvb 111ne11 ?:OhSU S? ?1IiC. January 27, 2003 Mr. Tim Smith USACE Asheville Regulatory Field Office 151 Paton Ave, Rm 208 Asheville, NC 28801-5006 RE: Laurel Creek Restoration Project Dear Tim: 3764 Rominger Road Banner Elk, NC 28604 Ph/Fa)r 828-297-6946 e-mail: wccJvQskybest.com Enclosed is an application for NWP 27 for the referenced project. We are also sending this package to Ron Linville with NCWRC and will soon be sending three sets of plans to NC DWQ. If you have any questions regarding this information please call me at 828-297-6946, thank you. Sincerely, hn C. Vlas President, EW Environmental Consulting Services Inc. Cc. Mr. Stan Steury, Blue Ridge RC&D Mr. Ron Linville, NC WRC A Upper Laurel Creek Project Application Laurel Creek Design and 3 Existing Conditions Worley Creek Design and Existing Conditions 1 Office Use Only: Form Version April 2001 USACE Action ID No. DWQ No. If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A" rather than leaving the space blank. I. Processing 1. Check all of the approval(s) requested for this project: X Section 404 Permit ? Section 10 Permit ? 401 Water Quality Certification ? Riparian or Watershed Buffer Rules 2. Nationwide, Regional or General Permit Number(s) Requested: NWP 27 3. If this notification is solely a courtesy copy because written approval for the 401 Certification is not required, check here: X per WQC #3353 4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for mitigation of impacts (see section VIII - Mitigation), check here: ? H. Applicant Information 1. Owner/Applicant Information Name: Blue Ridge RC&D Inc. Mailing Address: 1081-2 Old US Hwy. 421 Sugar Grove, NC 28679 Telephone Number: 828-297-5805 Fax Number: 828-297-5928 E-mail Address: bluerid eg rcd&skybest.com 2. Agent Information (A signed and dated copy of the Agent Authorization letter must be attached if the Agent has signatory authority for the owner/applicant.) Name: John C. Vilas Company Affiliation: E'nV Environmental Consulting Services Inc. Mailing Address: 3764 Rominger Road Banner Elk NC 28604 Telephone Number: 828-297-6946 Fax Number: 828-297-6946 E-mail Address: wcc, jv@§kybest.com Page 3 of 12 III. Project Information Attach a vicinity map clearly showing the location of the property with respect to local landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property boundaries and development plans in relation to surrounding properties. Both the vicinity map and site plan must include a scale and north arrow. The specific footprints of all buildings, impervious surfaces, or other facilities must be included. If possible, the maps and plans should include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion, so long as the property is clearly defined. For administrative and distribution purposes, the USACE requires information to be submitted on sheets no larger than 11 by 17-inch format; however, DWQ may accept paperwork of any size. DWQ prefers fall-size construction drawings rather than a sequential sheet version of the full-size plans. If full-size plans are reduced to a small scale such that the final version is illegible, the applicant will be informed that the project has been placed on hold until decipherable maps are provided. 1. Name of project: Laurel Creek Restoration 2. T.I.P. Project Number (NCDOT Only): 3. Property Identification Number (Tax PIN): 1961-51-4080-000 4. Location County: Watauga Nearest Town: Banner Elk Subdivision name (include phase/lot number): Directions to site (include road numbers, landmarks, etc.): From Banner Elk take Hwy 194 North approx. 4 miles turn left on Rominaer Road go approx 1.5 miles bear right on dirt road (staying on Rominger) Go approx. 2.5 miles. Site is adjacent to hay field behind 3 barns and near mail box # 3764. 5. Site coordinates, if available (UTM or Lat/Long): 36 deg 13'23" N, 81 deg 50' 5" W (Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) 6. Describe the existing land use or condition of the site at the time of this application:Agricultural, hav field and pasture 7. Property size (acres): 196 acres 8. Nearest body of water (stream/river/sound/ocean/lake): Laurel Creek 9. River Basin: Watauga (Note - this must be one of North Carolina's seventeen designated major river basins. The River Basin map is available at http://h2o.enr.state.nc.us/admin/maps/.) Page 4 of 12 Describe the purpose of the proposed work: To restore approximately 1400 linear feet of Laurel Creek and approximately 650 linear feet of Worley Creek immediately above the confluence with Laurel Creek (see project narrative) 10. List the type of equipment to be used to construct the project: Standard construction equipment: track excavator, backhoe dump truck loader 11. Describe the land use in the vicinity of this project: Rural residential, agricultural and undeveloped. VM low density. IV. Prior Project History if jurisdictional determinations and/or permits have been requested and/or obtained for this project (including all prior phases of the same subdivision) in the past, please explain. Include the USACE Action ID Number, DWQ Project Number, application date, and date permits and certifications were issued or withdrawn. Provide photocopies of previously issued permits, certifications or other useful information. Describe previously approved wetland, stream and buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project, list and describe permits issued for prior segments of the same T.I.P. project, along with construction schedules. A USACE 404 permit and a NCDENR 401 permit was obtained previously for the Worley Creek Restoration Project in 1999, the previous project is upstream of the currently proposed work on Worley Creek Previous permit #'s• NC WOC Project # 980342 (issued 5-19-98), USACE 404 # 199830459 (issued 3-15-99). The previous project restored approximately 1600 linear feet of 174/5 channel with a meandering E4/5 channel and created/restored/enhanced over 5 acres of wetlands The previous project area is surrounded and protected by a 13 acre conservation easement The proposed project will not impact the previous project in any way. V. Future Project Plans Are any additional permit requests anticipated for this project in the future? If so, describe the anticipated work, and provide justification for the exclusion of this work from the current application: No additional 404/401 permit requests are anticipated for this project. VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. The applicant must also provide justification for these impacts in Section VII below. All proposed impacts, permanent Page 5 of 12 and temporary, must be listed herein, and must be clearly identifiable on an accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a delineation map, whether or not impacts are proposed to these systems. Wetland and stream evaluation and delineation forms should be included as appropriate. Photographs may be included at the applicant's discretion. If this proposed impact is strictly for wetland or stream mitigation, list and describe the impact in Section VIII below. If additional space is needed for listing or description, please attach a separate sheet. 1. Wetland Impacts Wetland Impact Site Number indicate on ma Type of Impact* Area of Impact (acres Located within 100-year Floodplain** es/no Distance to Nearest Stream linear feet Type of Wetland*** * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding. ** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps (FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or online at http://NAANA?.fema.go\-. *** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond, Carolina Bay, bog, etc.) List the total acreage (estimated) of existing wetlands on the property: approx 10 acres Total area of wetland impact proposed: 0.0 2. Stream Impacts, including all intermittent and perennial streams Stream Impact Site Number (indicate on ma) Type of Impact* Length of Impact (linear feet) Stream Name** Average Width of Stream Before Impact Perennial or Intermittent? (please seci Laurel Creek Fill/ bank adin /flooding 1420 Laurel Creek 35 feet Perennial Worley Creek Bank radin ill 490 Worley Creek 18 feet Perennial Page 6 of 12 * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap, dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain), stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching(straightening, etc. If stream relocation is proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included. ** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at , www.usgs.gov. Several internet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com wivw.mapquest.com, etc.). Cumulative impacts (linear distance in feet) to all streams on site: 1910' Perennial, 3. Open Water Impacts, including Lakes, Ponds, Estuaries, Sounds, Atlantic Ocean and any other Water of the U.S. Open Water Impact Site Number (indicate on ma) Type of Impact* Area of Impact acres Name of Waterbody (if applicable) Type of Waterbody (lake, pond, estuary, sound, bay, ean, etc. * List each impact separately and identify temporary impacts. impacts mciuoe, but are not mmitea to: nn, excavanon, urcuging, flooding, drainage, bulkheads, etc. 4. Pond Creation If construction of a pond is proposed, associated wetland and stream impacts should be included above in the wetland and stream impact sections. Also, the proposed pond should be described here and illustrated on any maps included with this application. Pond to be created in (check all that apply): X uplands X stream ? wetlands Describe the method of construction (e.g., dam/embankment, excavation, installation of draw-down valve or spillway, etc.): An off-line pond is to be constructed in an excessively wide and deep portion of existing channel and adjacent upland areas. The pond will serve to generate fill material needed on the project while reducing fill requirements. The pond will be fed by a piped diversion from upstream Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): Balance cut and fill on the project, aesthetics, recreation, and habitat enhancement. Size of watershed draining to pond: approx 2 acres. Expected pond surface area: 0.3 acres Page 7 of 12 VII. Impact Justification (Avoidance and Minimization) Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide information related to site constraints such as topography, building ordinances, accessibility, and financial viability of the project. The applicant may attach drawings of alternative, lower-impact site layouts, and explain why these design options were not feasible. Also discuss how impacts were minimised once the desired site plan was developed. If applicable, discuss construction techniques to be followed during construction to reduce impacts. The proposed work and associated impacts are proposed to restore and stabilize previously altered channel areas that are currently unstable and ero ft. The primary purpose of this proiect is to provide an overall improvement to water duality. The methods proposed (root wads, sod mats willow transplants and rock vanes) are designed to provide the desired stability as well as enhance instream habitat. VIII. Mitigation DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC Division of Water Quality for projects involving greater than or equal to one acre of impacts to freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial , streams. USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide Permits, published in the Federal Register on March 9, 2000, mitigation will be required when necessary to ensure that adverse effects to the aquatic environment are minimal. Factors including size and type of proposed impact and function and relative value of the impacted aquatic resource will be considered in determining acceptability of appropriate and practicable mitigation as proposed. Examples of mitigation that may be appropriate and practicable include, but are not limited to: reducing the size of the project; establishing and maintaining wetland and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of aquatic resource functions and values by creating, restoring, enhancing, or preserving similar functions and values, preferable in the same watershed. If mitigation is required for this project, a copy of the mitigation plan must be attached in order for USACE or DWQ to consider the application complete for processing. Any application lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as incomplete. An applicant may also choose to review the current guidelines for stream restoration in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at http:Hh2o.enr.state.nc.us/ncwetlands/strmizide.htmi. 1. Provide a brief description of the proposed mitigation plan. The description should provide as much information as possible, including, but not limited to: site location (attach directions and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet) of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view, preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a Page 8 of 12 description of the current site conditions and proposed method of construction. Please attach a separate sheet if more space is needed. A permanent conservation easement with average width of 30 feet either side of the stream is proposed over most of the project Easement width will be reduced in the vicinity of the existing, structures 2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration Program (NCWRP) with the NCWRP's written agreement. Check the box indicating that you would like to pay into the NCWRP. Please note that payment into the NCWRP must be reviewed and approved before it can be used to satisfy mitigation requirements. Applicants will be notified early in the review process by the 401/Wetlands Unit if payment into the NCWRP is available as an option. For additional information regarding the application process for the NCWRP, check the NCWRP website at httv://h2o.enr.state.nc.ush,.rp/index.htm. If use of the NCWRP is proposed, please check the appropriate box on page three and provide the following information: Amount of stream mitigation requested (linear feet): 0 Amount of buffer mitigation requested (square feet): 0 Amount of Riparian wetland mitigation requested (acres): 0 Amount of Non-riparian wetland mitigation requested (acres): 0 Amount of Coastal wetland mitigation requested (acres): 0 IX. Environmental Documentation (DWQ Only) Does the project involve an expenditure of public funds or the use of public (federal/state/local) land? Yes X No ? If yes, does the project require preparation of an environmental document pursuant to the requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)? Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA coordinator at (919) 733-5083 to review current thresholds for environmental documentation. Yes ? No X If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a copy of the NEPA or SEPA final approval letter. Yes ? No ? X. Proposed Impacts on Riparian and Watershed Buffers (DWQ Only) It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to required state and local buffers associated with the project. The applicant must also provide justification for these impacts in Section VII above. All proposed impacts must be listed herein, and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ Page 9 of 12 Regional Office may be included as appropriate. Photographs may also be included at the applicant's discretion. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify )? Yes ? No X If you answered "yes", provide the following information: Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer mitigation is required calculate the required amount of mitigation by applying the buffer multipliers. Zone's Impact (square feet Multiplier Required Mitigation 1 3 2 1.5 Total Lone 1 extends out iU Teel perpenGICUlar n-om near Danz 01 UUMU 11- c,UuC c cawuub a,1 additional 20 feet from the edge of Zone 1. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 2B .0242 or .0260. Xl. Stormwater (DWQ Only) Describe impervious acreage (both existing and proposed) versus total acreage on the site. Discuss stormwater controls proposed in order to protect surface waters and wetlands downstream from the property. NA XII. Sewage Disposal (DWQ Only) Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of wastewater generated from the proposed project, or available capacity of the subject facility. NA XIIL Violations (DWQ Only) Page 10 of 12 Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules? Yes ? No X Is this an after-the-fact permit application? Yes ? No X XIV. Other Circumstances (Optional): It is the applicant's responsibility to submit the application sufficiently in advance of desired construction dates to allow processing time for these permits. However, an applicant may choose to list constraints associated with construction or sequencing that may impose limits on work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and Threatened Species, accessibility problems, or other issues outside of the applicant's control). -?3-0 Applicant/Ag is Signature J o i n L U i l a S Date (Agent's sig ture is valid only if an authorization letter from the applicant is provided.) US Army Corps Of Engineers Field Offices and County Coverage Asheville Regulatory Field Office Alexander Cherokee Iredell Mitchell US Army Corps of Engineers Avery Clay Jackson Polk 151 Patton Avenue Buncombe Cleveland Lincoln Rowan Room 208 Burke Gaston Macon Rutherford Asheville, NC 28801-5006 Cabarrus Graham Madison Stanley Telephone: (828) 271-4854 Caldwell Haywood McDowell Swain Fax: (828) 271-4858 Catawba Henderson Mecklenburg Transylvania Raleigh Regulatory Field Office Alamance Durham Johnston Rockingham US Army Corps Of Engineers Alleghany Edgecombe Lee Stokes 6508 Falls of the Neuse Road Ashe Franklin Nash Surry Suite 120 Caswell Forsyth Northampton Vance Raleigh, NC 27615 Chatham Granville Orange Wake Telephone: (919) 876-8441 Davidson Guilford Person Warren Fax: (919) 876-5283 Davie Halifax Randolph Wilkes Washington Regulatory Field Office Beaufort Currituck Jones US Army Corps Of Engineers Bertie Dare Lenoir Post Office Box 1000 Camden Gates Martin Washington, NC 27889-1000 Carteret* Green Pamlico Telephone: (252) 975-1616 Chowan Hertford Pasquotank Fax: (252) 975-1399 Craven Hyde Perquimans Pitt Tyrrell Washington Wayne Union Watauga Yancey Wilson Yadkin *Croatan National Forest Only Page 11 of 12 Blue Ridge Resource Conservation & Development Council, Inc. 1061-2 Old 1hMww Grove, .828-2.61105 F4x: ?d2s?9?77??2s sMn aw?r ?e oweaK • Taw vfteml. Pao M%".o•r • e.eh w a As++- a.r?wr January 22, 2003 NC DENR Division of Water Quality MSC-1921 Raleigh, NC 27699 To Whom It May Concern: Buck Engineering of Cary, North Carolina is authorized to be our agent in the Lawel and Worley Creek restoration project to be completed in Spring of 2003. If you have questions, please give me a call at 828-297-5805 or email me a ssteuboone.net. Sincerely, Stan SteuryACoordinato Blue Ridge RC&D Council, Inc. - 1 F- - .. ,?-?.._-., i ?( ??„ ----' ^' ,` ? 1a ? ?-_..,? ? "? . ifs _' ? !.? -? ?. V .. _•.,., ?? • '??r `: f •+} ??-?..,,?,__ err 1 ? ? ? z 'S ` ? ?.?f?yi \'l .Li-s`_- ?.?, (II t', •',I? ?? _' Jr O + ` ? O O M. FM - ' ?_._- .ter r j ?? _. _- ....l.r ?. ... i? ?l ?`"..-• ??"+..,`? 4,1 r _ - -` + Z7 41 ti's o`,*, ? ..- ? --? ?t 5y '4 ? • ft ?. ? ??? ??`1 yl•1 ?' { -53 ??? 5` ^?4''_- ? / j fh o f??- ~-•. i y yyy5 ` , 5>?}? ` ?? I???` ??ki5'55,?5???t' y1 '`` iy I ? k ?, `•?'•??'??r -L?5 ? 1 ?? ? 1) it afy !j j? 'r - -? ?•-? 1 551.: ? '? r ? ?^- -JI ; + f` 1 ( 1y4 ,?? 1r `'r45%?? 6' W 55, r?15''+54'ti+ 651 0 111 111 1 1 111 1 1 11 1 1 1 081 ° 150' O d0" W 1 1 1 I 1 1 1 I 1 1 081 " t19' 00" W 1 1 1 1 1 1 , O Name: VALLE CRUCIS Location: 036° 13'22.7" N 081° 49' 56.8" W Date: 1/6/2003 Caption: Laurel/Worley Creek Project Area Scale: 1 inch equals 1000 feet (C) 1997, Wptech, Inc. pq Project: UPPER LAUREL CREEK RESTORATION Location: Watauga, NC PROJECT NARRATIVE General: The Upper Laurel Creek Restoration Project will restore approximately 2000 linear feet of mountain trout stream in northwestern Watauga County, NC (see location map). The project involves work on two streams, Laurel Creek (approx. 1500 linear feet) and Worley Creek (approx. 500 feet). Worley Creek, at the project site, has a drainage area of approximately 1.35 sq. mi. and contains a healthy population of native Brook Trout. Another reach of Worley Creek approximately 2000 feet upstream of the current project reach was restored in 1999. Laurel Creek at the project site has a drainage area of 2.2 sq. mi. Laurel Creek is also a trout stream but contains primarily stocked populations of Brown and Rainbow Trout. This project was identified as a high priority restoration site in the July 2000 Watauga River Basin Riparian Corridor Conservation Plan funded through NC CWMTF grant and prepared for the Blue Ridge Rural Land Trust. The current project is funded through a CWMTF grant to Blue Ridge RC&D. The contract for this project was awarded to Buck Engineering of Cary, NC and E'nV Environmental Consulting Services Inc. of Banner Elk, NC. The design objectives of the Upper Laurel Creek Restoration Project are to correct severe stream bank erosion and channel migration problems. Also to provide an accessible floodplain, create/enhance riparian wetlands, and stabilize and enhance aquatic habitat to these designated troutwater streams. The existing channel is a F4b in the upper part and a B4 with major problems in the lower section. The proposed channel is a stable B4. The Worley Creek portion of this project will involve regrading and stabilizing of streambanks to obtain a bankheight ratio of 1.0 and correct bank erosion problems. Some pattern adjustment will also be incorporated to establish stable meander bends and higher quality buffer in the vicinity of existing structures. Upper Laurel Creek: The upper end of the project reach lies in open mixed hardwood forest, terraces with a thick Rhododendron subcanopy and hardwood canopy flank the valley floor. The lower end of the project reach is bordered by a pasture/hayfield to the east (river right) and a large rocky floodplain with numerous wetland pockets to the west. In addition to the wetland pockets located in the large floodplain area, there are two additional small pockets (approximately 900 sq. t.) along the western edge of the valley near the upper end of the project reach (see site plan). This section of Laurel Creek has a history of alteration. Although the specific nature of the alterations has not been confirmed, there is abundant evidence of past activities. The most significant feature is a large berm 8-10 feet high and 400 feet long that confines a long straightened run through the middle portion of the project reach. The upper section contains areas that appear to have been graded down two feet as well as numerous mounds of earth. The lower section also contains numerous mounds of earth. All of these mounds have been in place for at least 50 years as evidenced by the size on trees growing out and interviews with long time residents. It is suspected that most of the berms and mounds are related to past sand and gravel mining operations. A large section of abandoned channel exists along the western edge of the valley that likely was Laurel Creek at one time. The reach immediately above the project reach is a stable B4. Farther upstream is mostly AM with short sections of B3/4 and Aa+. Below the project reach the valley broadens with a flatter slope; stream types are mostly C and F. There is an existing ford at approximate station 8+00 that will be replaced in the new channel at an appropriate location. Lower Worley Creek: The Lower Worley Creek project reach extends from the confluence with Laurel Creek 500 feet upstream. The upper portion of the Worley Creek reach is bordered by a hay field on the left and mowed grass area with barns and a garden on the right. A long established ford exists in the middle of this reach and will be reconstructed at an appropriate location on the restored reach. The lower portion flows through a forested area with large earth berms and mounds left from past activity. These berms appear to have caused problems in this area by limiting floodplain functionality and confining the channel laterally. Existing Condition: Upper Laurel Creek: The upper portion of the project reach (station 0+00 - station 3+90) is predominantly F4b and contains severely eroding stream banks. Vertical and undercut banks 5 to 10 feet high are common, split flow and excessive over widening are also widespread. In one area several large trees have fallen into the channel due to severe bank erosion. This section of the existing channel transitions from severely incised to fully entrenched. From approximately station 3+90 to 7+00 the channel is straight and confined between a steep eroding bank (right) at the edge of a pasture and a large berm 8-10 feet high (left). The lower portion of the project reach is mostly B4 with a variety of problems. The left berm ends (near station 7+20) the bank becomes relatively flat and sandy. The streambed splits again near station 7+40 and does not converge until approx. station 9+50. The left bank through this section is eroding and unstable. After converging, Laurel Creek straightens through approx. station 13+00. The right bank height increases through this area becoming steep and eroded in places; the accessible flood plain is located on river left. Channel bedform and pattern also are in need of adjustment in this area. From station 13+30 where Laurel Creek takes a sharp left turn through the end of the project reach, Laurel and Worley Creeks are merely separated by a 20 foot-wide bankfull bench, this bench has been frequently overtopped and is gradually being eroded away. If no action is taken in this area the confluence of Laurel and Worley Creeks will soon be shifted upstream approximately 100 feet Sinuosity in the existing channel is low (1.04) due largely to past channelization and the presence of the large berm through the middle of the reach. Lower Worley Creek: Upstream of the proposed restoration, Worley Creek is a stable E5 through an area with a broad accessible floodplain and wetlands. Problems with incision begin just above the beginning of the project. The bank height ratio in the upper part of the project reach is 1.3 to 1.4. Existing stream type in this area is an incised E4. Elderberry, willow and blackberry stands populate the riparian zone through the pasture area (Station 0+00 - Station 2+00). The left bank height increases between station 1+00 and 2+00, becoming severely eroded through this area. The lower section, from station 2+00, continuing through its confluence with Laurel Creek (station 5+00), Worley Creek is a C4 stream type. Throughout this portion of the project reach the bank height ratio is 1.4 to 1.6. In addition, large berms that confine the channel have resulted in several areas of bank erosion and a limited sinuosity. Project description: Upper Laurel Creek: Laurel Creek will be restored as a priority 1-2 project, a proposed B4 channel of approximately 1500 linear feet will be constructed to replace the existing channel. The upper 800 +/- feet is a priority 1 design and the lower 700 +\- is a priority 2 design. The design is based on reference reach data collected from two reaches of Laurel Creek, one above the project reach and one below (see Reference Parameter Spreadsheet). Each reference reach used in the Laurel Creek design was chosen due to similarities in hydrophysiographic regioning, drainage areas, stream type and other desired characteristics. Reference reaches listed in the Reference Parameter Spreadsheet as well as others in the Watauga River Basin, including the Watauga and Elk River gages, were incorporated into mini-regional curves used to calibrate design parameters. Proposed channel dimension and profile parameters were set to ensure channel competency based on entrainment calculations. Channel pattern parameters were designed in accordance with regional dimensionless ratios and site constraints. Several significant site features and practical constraints influenced the proposed design. Due to high debris potential of the project reach it was considered essential to design broad, functional and very accessible floodplain, as well as to provide a channel with sufficient energy to move the largest available particles. The priority one restoration is proposed in the upper part of the project where the existing channel is most severely incised, this was found to be a more cost effective approach than constructing a floodplain for the existing channel through grading. This also allows this portion of the project to be constructed in the dry. The existing large berm will be removed by using it as fill for the existing (to be abandoned) channel. There is a substantial bedrock vane that extends into the area of the proposed channel in the middle of the reach. This bedrock is exposed in a section of abandoned channel (possibly old Laurel Creek). To decrease the likelihood of grade problems due to excessive bedrock, the proposed channel was routed into a section of the old abandoned channel through this area (proposed stations 5+25 to 7+50). The need to balance cut and fill locally was a significant budget issue and was resolved by incorporating a pond in the widest and deepest portion of the existing channel. This area of abandoned channel would have required approximately 2600 cubic yards to fill. At the lower end of the project reach Laurel Creek will be rerouted to allow for greater separation from Worley Creek. The berms and mounds in this area will be removed or pulled back away from the proposed channel. Existing wetlands located in the project area will be enhanced due to their location on the proposed active floodplain and riparian fringe. Existing wetlands will generally be enlarged and several areas of new created wetlands will be established. Channel stability will be achieved through a combination of techniques and measures. All areas of restored channel will be constructed with a design bank-height ratio of 1.0. Channel slope will be controlled with rock cross-vane structures at the head of all riffle sections. Channel bends will be stabilized with a combination of root wads, rock vanes and J-hook vanes. Channel banks will generally be graded with low angle banks and seeded. Where sod is accessible (lower part of reach) it will be used extensively to line graded banks. Where needed erosion control matting will be installed Lower Worley Creek: Beginning at upper end of the project (station 0+00) and extending through the incised area (station 2+00) the restoration objective is to decrease the bank height ratio allowing the stream to access its floodplain. This shall be achieved by raising the bed elevation, with grade control structures, and creating a bankfull bench that extends an average of 10 feet on either side of the stream. The bankfull bench will be constructed to encourage wetland creation throughout the upper part of the Worley Creek reach. This work will result in a change in stream type from a incised E4 to a stable C4. Extending from station 2+00 through the end of the project the priority 2 restoration utilizes the existing mixed hardwood riparian zone. The principal objective in the lower part of the reach is to create a functional, accessible floodplain by restoring a bank-height ratio of 1.0, removing berms and mounds, and adjusting pattern. The permanent ford will reconstructed in the vicinity of proposed station 1+00. Channel stability will be achieved through a combination of techniques and measures. All areas of restored channel will be constructed with a design bank-height ratio of 1.0. Channel slope will be controlled with rock cross-vane structures at the head of all riffle sections. Channel bends will be stabilized with a combination of root wads and rock vanes. Sod mats and Willow transplants will be used to line graded stream banks. Planting Plan: The riparian zone and buffer areas will be revegetated with a combination of trees, shrubs and herbaceous plants. All disturbed areas will be seeded with temporary cover (rye or millet depending on time of year) immediately following completion of work in those areas. Permanent cover will be established at the end of the project. Trees and shrubs will be planted throughout the riparian zone (except shrubs-only in powerline easements) at a density sufficient to achieve a forested condition, approximately 400 stems per acre. Species to be planted include: River Birch, Green Ash, Red Maple, Red Oak, Poplar, Black Willow, Sycamore, shrub Willow, shrub Dogwood, and Alder. Buffer: A permanently protected buffer area will be established around the restored areas of both Laurel and Worley Creeks. The buffer width will be an average of 30 feet from the top of bank on each side of the proposed restored channels. The buffer width will be reduced somewhat in the vicinity of the existing structures and garden along Worley Creek. The buffer area will be placed into a permanent conservation easement to be donated to a local land trust. Two permanent fords currently exist within the project area, one over each creek; these will both be replaced. The landowner also retains the right to construct a bridge across each of the streams in order to allow vehicular access to large sections of the property that would otherwise be restricted from public road access by proposed and existing easements. Such crossing locations are not planned nor have any locations been identified. Any future crossings will involve spanning structures and will be planned in accordance with all regulations applicable at the time such development is proposed. Monitoring Plan: An as-built survey of the restored channels will be conducted following construction and after one or two flushing flows. 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O O a a? d C Y d d L V d L J D_ Y C m n E 0 m ? o O M O N O F Cl LO co In I` to co to LO ?n v .., r r M N c6 r- c6 L6 ( ) U014RA013 Laurel Creek Design Reference Parameter Spreadsheet L aurel Creek above L aurel Creek near Existing Condition Proposed Laurel Creek Reach Name project River Laurel Creek Proj. Stream Type B4 134 F4b Drainage Area 2 sq mi 7.1 sq mi 2.2 sq mi 2.2 sq mi mean: 25.3 ft Bankfull Width range: 23-29.5 It 47 ft 43 It 26.5 ft Bkf mean depth mean: 1.6 ft range: 1.37-1.89 ft 1.62 ft 1.002 ft 1.6 W/D 15.8 29 42.9 .6 16 6 mean: 40.9 sq ft r ange: 38.7-43.4 sq ft 95 sq ft 75 43.075 sq It 42.5 sq ft Area, bid . mean Velocity 6.1 ft/s 6.2 bkf 0 250 cfs 265 cfs 265 cfs mean: 2.4 It max depth bkf range: 2.1-2.74 ft 2.62 ft 2.1 It 2.75 ft d-max/d-bkf 1.5 1.62 1.62 bank height ratio 1.3 1 3.75 1 Width fpa 55.5 It 180 It 50 It 75+ ft Entrenchment Ratio 2.4 3.8 1.16 3+ 215 It 160 It (155-230) Meander Length 74 ft 70 It (55-75) BeR Width 104 It 60 It, (55-75) Radius of Curvature LmfW bkf 5 6 Re/Wbkf 2.43 2.3 1 12 2.6 vvoruvvoa Sinuosity 1.22 1.25 Valley Slope Avg. Slope 0.039 0.0228 0.03 0.0275 0.03 0.025 Pool Slope mean: 0.0069 range:.001-.013 mean:.0039 range: 0-.011 1.14 0.0047 Riffle Slope mean:.041 range:.013-.095 0.052 Glide Slope Run Slope Sp/Savg 0.18 0.17 0.415 0.18 Sr/Savg 1.8 2.08 Sg/Savg Srun/Savg max pool depth 3.93 ft 4.66 ft 4.45 It 3.75 ft Dmax-p/Dbkf W idth-pool 2.46 29 ft 2.88 4.44 26.9 It 2.75 32 It W-p/W-bkf Area-pool 1.15 0.63 48.8 sq ft 1.15 57.2 sq ft A-PIA-bkf 1.4 1.35 P-P spacing mean: 46.2 rang 19-78 e: mean: 68.2 range: 21-118 74.7 ft 105 It P-P spacinglWbkf 1.83 1.45 1.74 3.9 Channel Materials D16 035 1.5 7 1.05 15 1 18 1 18 D50 D84 D95 39 220 450 60 205 470 34 120 250 34 120 250 Riffle Count D16 9 1.8 D35 26 20.5 D50 54 40.2 D84 190 135 D95 400 205 Sub-Pavement D16 2 4.6 D35 4.1 21 D50 11 43 D84 46 97 D95 80 110 Bar Sample D16 D35 D50 D84 D95 V- 7-3-0 Z t Sv ? ? sv Sri-.„ ..-1 1h 44A 5 /-7" 1? SKb- „??- - Z3- °'"f th sue/ case- at may, ,. i?sv 1.5_ ? ak D, a3 fry Cis) - . 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N N N ? 11 N O CD O O O Iq C 0 V d N 0 0 CL .o 1Q d v 0 ?- a ? o Ya m d L U d L 0 1 F- M O N O r O O O O O 0) r 0) O O 0) 0) 0) 0) O O co O O rn rn (U) u011enaIa Lower Worley Creek Restoration Project Reference Reach Data (station 1+20: end) (station 0:-1+20) Reach Name Existing Channel Existing Channel Basin Creek Worley Ck (upper) Proposed Channel Stream Type C4 E4 C4 C4 C4 Drainage Area 1.3 sq mi 1.3 sq mi 8 sq mi 0.96 sq mi 1.3 sq mi Bankfull Width 15 ft loft 30.7 ft 15 ft 16-18 ft Bkf mean depth 1.2 ft 1.6 1.9 ft 1.2 ft 1.22 W/D 12.5 6.25 16.4 12.8 14.7 Area, bkf 18.1 sq ft 16 sq ft 57.4 sq ft 17.6 sq ft 22 sq ft mean Velocity 4.8 ft/sec 4.9 ft/sec 5.4 ft/sec bkf Q -120 cfs -120 cfs -120 cfs max depth bkf 1.7 2.35 ft 2.5 ft 1.7 ft 2.0 ft d-max/d-bkf 1.4 1.47 1.7 1.4 1.6 bank height ratio 1.6 1.4 1 1 1 Width fpa 23 ft. 120 +/- ft 85 ft 50 ft 75 + ft Entrenchment Ratio 1.5 12 2.8 3.3 4.2+ Meander Length 98 ft 98 ft 350 ft 135 ft 114 ft Belt Width 52 ft 40 ft 105 ft 71 ft 60 ft Radius of Curvature 20 ft 20 ft 77-134 ft 20.70 28 ft Lm/Wbkf 6.5 9.8 11.4 9 6.3 RclWbkf 1.33 2 2.5-4.4 1.38 2.8 Wbit/Wbkf 3.5 4 3.4 4.7 3.2 Sinuosity 1.3 1.26 1.02 1.5 1.2 Valley Slope 0.0116 0.0174 0.014 0.025 0.016 Avg. Slope 0.0144 0.0138 0.014 0.017 0.012 Pool Slope 0.0037 0.0026 0.005 0.0035 0.0024 Riffle Slope 0.026 0.031 0.051 0.041 0.0255 Glide Slope Run Slope Sp/Savg 0.26 0.19 0.39 0.21 0.21 Sr/Savg 1.8 2.25 3.61 2.46 2.04 Sg/Savg Srun/Savg max pool depth 2.88 ft 3.1 ft 1.7 ft 1.8 ft 2.5 Dmax-p/Dbkf 1.7 1.94 0.9 1.5 2 Width-pool 18 ft loft 40.6 ft 15 ft 24 W-p/W-bkf 1.2 1 1.3 1 1.3 Area-pool 28 sq ft 19.2 sq ft 64.4 sq ft 26.8 sq ft 28.6 A-p/A-bkf 1.5 1.2 1.1 1.5 1.3 P-P spacing 38-80 ft 38-80 ft 224 ft 125 ft 90 ft P-P spacing/Wbkf 2.5-5.3 2.1-4.4 7.3 8.3 5 Channel Materials D16 0.35mm 0.35mm 4.8mm 1.7mm 0.35mm D35 4mm 4mm 20mm 8mm 4mm D50 9mm 9mm 38mm 45mm 9mm D84 100mm 100mm 130mm 160mm 100mm D95 250mm 250mm 230mm 230mm 250mm 01- ?\--J •- ?`Jif J ,' Ill, '?;,? ? - r aging station= ;. , Al, -T, T 6V -'J rf?/ - /J''1\ Z r Grove _ Ta y• - ?• _'_ J I u` U/?/f/?? rr? v -40 p ?•_ ?•• t' ?.y-?,` ref 'J; .:' k,A 3379 ? ? \\ .' ..% ? ?? ' `;I , ',\ ` ? ?:; _` ?l '\ (? ?c I1 . ?/• -\?• ( ' [?r? ? •' ? /?`?•? ? ? toa ? O u- V i ' ' \ l '? ?• ' ,i3 ky ? ?? - 7 rr ?_ -•-J I ? - O O 7 ? ? ?•? ' ? ," •?" ?o '' ?, I o , i It , t ?. o Awk t\ : ?, t J \ J '? ?? 6* W 1 4 1 ° 50' 0.00" 1- 49 0.00" ; Name: VALLE CRUCIS Location: 036° 12'58.8" N 081 ° 49' 47.1" W Date: 9/3/2002 J Scale: 1 inch equals 2000 feet Worley C+eek%ec.T tZeticL. WKdars ?+ac? ?a O O c0 O U) N O O M H ? O V d . CL CL Y ? d ? i p U J co c ? H J 'X '- W a? ? L U d L O O N w O d N e? N 13 O O r O LO co co I - co O co to d Co co (4001) U014BA013 O M N to W co co 0 -- o i C) 4 ? M ° ?O CC) F- 00 i O O tip L 0 ?c a i C d O U _ J .? O ? C 'Col ? J to N L X D W ` Q CL (D U C as 0 °v M t O O _ M CEO ?O (fl CO t0 tOA t? I "no (1001) UOi;en813 co IV 0 0 C (D 0 0.. c c .X O O d = U L G) U N = X H R d W ? U d L O O O co r co co (1081) u011ena13 O N O r r O O r O O O O O W O d CD v C ea O 0 LO O d' O M O N O r O co c O u o c l o tD N V = O a cn ?Xd ? L ? U J d L L O a? c H W 0 O 0 w 0 0 co O L d w d N_ 'IT Co M O N O V- C) co co f? co co co co W co (4001) U014PA913 E E O 0 C O U m m a c 0 ea .N M U Y m m L V m L 2O 7 L m 3 0 J °o rn co ° (co C) C) L ° v m r O O O r- m O N r- (A d _V ca a r --??-r 0 O O O N ueyz jauil % sAneinmo or TYPICAL BEDFORN/GRADING SEQUENCE POOL 0 P?4f ? I C,?r per` F ? \P Ff` POOL ?7DE ®;' pG7i. ?POOL?GV,GE1 8ANXFUIL 01M WAM I SCOUR HOLE ?f MAX DEPTH POOL I CROSS VANE CROSS VANE DETAIL FLOM LOUR HOLE y /ua t t 1 1 e-izx BkF III-_ 111 PROPOSED EE0 ELEV<T10N 111 =III _ III III 111 GEOIEXTILE FABRI FOOTER ROCK 11w&"T1* A trench shall be dug in a manner that the footer rocks. cross Header rOCks and a MIN of 1/3 of the wing header rocks are buried beneath the tleI surface elevation. Rocks are precisely placed with a nydraulic thumb. Footer roCks Shall be placed first wltn neader rocks placed on top prior t0 baCkf illing the trench. In the tenter (cross) portion the header rocks shall be ulaced so that the t00 Of the header rock is an aIevat Tan adue] to the prODaeed bed elevation. Geotextile fabric shat] be olaced in the trench with appr0k. 2 ft. of over la0. RC Ck fill mater- ial Snall be back felled around the fabric. Tne reader rocks on the wing portion snalI be placed SO tnat they S100e ub from the bed elevation at the cross oartion, to a bank full elevation and meet the bank at a 20 deg. angle. Header and footer rocks at both ends Shall be tied in secur e]y to Lne bank to eliminate the 00ss3bi]ity of water diversion. Hoer No oerAm FOOTER LOG FLOW BKF WAT SURFACE FOOTER LOG' rALJ Arm A trench shall oe dug along the tee of the hank to a de0th of the tli amet or of the faa[er lag. A prunso feat er log snail 6e placetl at the tae of the cnannel antl the root wad snail oe Dlaced directly above it. The velocity vectors of the stream 0f the cnannel are aligned with the trunks ]onglt UdlnaI axis and w, 1 intersect the root mass at a 90 degree angle. A h aUl tler may Is plaC etl pn the tlown stream =side. an tap of, and an the Upstream side het Meen the rcotmass and the hank to prDVjde erosion control. J-HOOK DETAIL 3-7% SLOPE 20-30 DEGREES HA7ER SURq1GOIERROCK FLOW v PROFILE VIEW BKF PLAN VIEW WATER SURFACE I FOOTER FOLKS CROSS-SECTION VIEW Z Q O ? a a o m z 0 0 ¢ H a F- a H w CD w 0 w U) 0 n 0 0 n Y ui LLJ Ir C) J W rr D Q I Ir 111 a 0- D H W W V L W N O C 4J 7 O ID 4 •m0 NSN N ow ZN L. OI m .i C .W- cr. W OW I >mwo Cco C\ wmm a P! F O 2 N W O W O Z Z ¢ J < H <U J Z J W O OCmcn O M2 EQcn ? <2 F<?ZO iLX aQ WO¢N os C301 JW« W WH-U) CC CC4 03,M4 J f=••O F NWO pld NO IL"JO XMO "cc OOJC] "C30 0< >JxW OJLLL Jm )C«O.T W< <O HO 0m W IOM ~2 NMI MM= » ZW F- IL Z F <ZI-OZ WWO WWZ cr Zpy< QNM OZ>mZ <JIL 0-(L r?,? I I ¢a m°a way W< « * ?aicv *v 10 ¢ Y W L L U L m J 333000 }}-yi3??C6pT \ Z M im IL a J J ,< I-I Wr- W? . M M xMx W W m n ¢ W LL LL ED' ¢ O W LL LL m Ln ` a a E z 0 H Q N H H m Q Cf-) W z z Q Z U z 0 H U W CI7 I CI7 C1) 0 M U W z z Q Z U Q U H n 4 of 6 Restoration Plan Restoration Plan Restoration Plan Restoration Plan Restoration Plan Restoration Plan Restoration Plan Restoration Plan Restoration Plan Restoration Plan Restoration Plan Restoration Plan Restoration Plan Restoration Plan Restoration Plan Restoration Plan Restoration Plan Restoration Plan