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Home My WebLink About20191271 Ver 1_Dutch_FINAL_60%_20191016WESTERN NORTH CAROLINA STREAM INITIATIVE DUTCH CREEK STREAM RESTORATION SHEET INDEX GENERAL NOTES: COVER 1 1. STREAM ASSESSMENT DATA (LONGITUDINAL PROFILE, CROSS -SECTIONS, ETC.) PRESENTED HEREIN COLLECTED BY BFEC/BFED. OVERALL SITE PLANA 2 2. CONTOUR DATA PRESENTED IN THIS DOCUMENT IS TAKEN FROM NCDOT SITE PLAN 1 STA 0+00 TO 6+00 3 LIDAR DATA (2' and 10' CONTOURS). SITE PLAN 2 STA 5+00 TO 9+45 4 3. HORIZONTAL AND VERTICAL GRID CONTROL TIED TO PROJECT BY RICK DUTCH CREEK LONGITUDINAL PROFILE 5 SNYDER PLS# L-4418. DUTCH CREEK CROSS SECTIONS 1-6 6 4. PRIOR TO CONSTRUCTION, BFEC WILL FLAG TREES APPROVED TO BE DUTCH CREEK CROSS SECTIONS 7-10 7 REMOVED DURING CONSTRUCTION AS AN EFFORT TO PRESERVE THE UNNAMED TRIBUTARY (UT) UT CROSS SECTIONS 1-2 8 EXISTING RIPARIAN BUFFER. CONSTRUCTION DETAILS 9-17 081 ° 48' 00.00" W 081 ° 47' 00.00" W 081 ° 46' 00.00" W y Dutch Creek WNCSI Project Topographic Map o �. tea; 7� �0ZD � Project Lo ' _nLk SC& Valle e CS - G Decli anon _� Cross O. SCALE 1:24000 7 0 1 MILE MN 6.79° W �. O 0 1000 YARDS r 0 1 KILOMETER 081 ° 48' 00.00" W 081 ° 47' 00.00" W 081 ° 46' 00.00" W Name: VALLE CRUCIS (NC) Date: 05/22/19 Scale: 1 inch = 2,000 ft. D-1 NA — Location: 036° 12' 48.42" N 081 ° 46' 52.91" W APPROXIMATE QUANTITIES Item Qty Unit J-Hook 5 EA Cross Vane 3 EA Si ngl e Rock Vane 2 EA Constructed Riffles 4 EA Toe Wood (Root-1 181.66 LF Stream Crossings (3) 4500 SF Live Stake 7817.85 SF Planting: Container Tree &Shrub 11727.77 SF Bank Sloping&Stabilization 1924 LF EROSION AND SEDIMENT CONTROL NOTES: 1. ONCE SITE CONSTRUCTION WITHIN AN AREA HAS CEASED ALL DISTURBED AREAS WILL BE IMMEDIATELY SEEDED (TEMPORARY & PERMANENT SEED), MATTED (COIR AND COCONUT FIBER EROSION CONTROL BLANKET, NAG C70013N), AND STABILIZED (SEE SHEET X). 2. LIVE STAKES AND BIODEGRADABLE MATTING STAKES WILL BE USED TO SECURE THE MATTING. 3. BROADCAST SEEDING RATES WILL BE AS SPECIFIED ON (SHEET X) 4. NATIVE SHRUB AND TREE SPECIES WILL BE PLANTED THROUGHOUT THE PROJECT AREA AT A RATE OF 400+ STEMS/ACRE, SECURING NEAR BANK AREAS AND PROVIDING FUTURE SHADING OF CHANNEL (SEE CHANNEL REVEGETATION DETAIL SHEET X). 5. PRECAUTIONS WILL BE TAKEN TO KEEP HEAVY EQUIPMENT OUT OF THE STREAM CHANNEL EXCEPT WHERE ABSOLUTELY NECESSARY TO INSTALL BANK STABILIZATION/ENHANCEMENT MEASURES AND IN -STREAM STRUCTURES. No RESOURCE INSTITUTE TO THE BEST OF MY KNOWLEDGE, JUDGMENT, AND BELIEF THESE PLANS MEET APPLICABLE NRCS STANDARDS AND LOCAL AND STATE REGULATIONS. c 0 00 0 w Z W � roZ Cc LCCLI ro ro o V Q) ro U � o C2 Sheet 1117 f / z� / , S i / Z / e .� Proposed Stream Q / R x1 Crossing / -�5 3 i v ' / onst ucted Riffl / / x Constructio Entrance / ...... / OJ / / / f 1 / J THIS PLAN DOES NOT PURPORT TO SHOW ALL EXISTING UTILITIES, LINES, APPURTENANCES, ETC., AND / THE LOCATIONS OF EXISTING UNDERGROUND UTILITIES, PIPES, VALVES, ETC. AS SHOWN ARE IN AN APPROXIMATE WAY ONLY AND HAVE NOT BEEN INDEPENDENTLY VERIFIED BY THE OWNER OR THE / ENGINEER. THE CONTRACTOR SHALL DETERMINE THE EXACT LOCATION OF ALL EXISTING UTILITIES, LINES, PIPES, ETC. BEFORE COMMENCING WORK, AND AGREES TO BE FULLY RESPONSIBLE FOR ANY AND ALL DAMAGES WHICH MIGHT RESULT FROM THE CONTRACTORS FAILURE TO EXACTLY LOCATE AND PRESERVE ANY AND ALL UNDERGROUND UTILITIES, PIPES AND VALVES. THE CONTRACTOR SHALL NOTIFY THE ENGINEER OF ANY CONFLICTS WITH EXISTING AND PROPOSED FACILITIES TO DETERMINE IF AN ITEM WILL NEED TO BE RELOCATED. THE ENGINEER HAS MADE NO EXAMINATION TO DETERMINE WHETHER ANY HAZARDOUS OR TOXIC MATERIALS \ i ARE PRESENT OR CONTAINED IN, UNDER, OR ON THE SUBJECT PROPERTY OR ITS WATERS, OR IF ANY \/ HAZARDOUS OR TOXIC MATERIALS HAVE CONTAMINATED THIS OR OTHER PROPERTIES OR ITS WATERS IN ANY WAY WHATSOEVER. NO SUB -SURFACE EXAMINATION OF ANY TYPE HAS BEEN MADE BY THE ENGINEER, AND ACCORDINGLY, NO OPINION IS EXPRESSED OR INFERRED ON ALL SUCH MATTERS. FURTHER, NO OPINION IS RENDERED AS TO ANY VIOLATION OF ANY ENVIRONMENTAL LAWS OR REGULATIONS, EITHER FEDERAL, STATE, OR LOCAL RELATED TO THE INFORMATION SHOWN ON THIS PLAN AND THE ENGINEER IS IN NO WAY LIABLE FOR ANY VIOLATION OF SUCH ENVIRONMENTAL LAWS SHOULD SUCH EXIST, BASE MAP LIDAR DATA COLLECTED BY NCDOT. FOR DESIGN PURPOSES, PREFERENCE WAS GIVEN TO ACTUAL LAND -SURVEYED DATA WHEN CONTOUR DISCREPANCIES WERE OBSERVED. 1 / S ' / / / / ence Trib Control Point Northing Easting Elevation 1 907667.8500' 1179614.6700' 2661.99' 2 907818.6900' 1179277.8500' 2662.40' 3 1 907840.3757' 1 1179705.1342' 1 2662.42' 0E----, 60 12 1:7 240 Feet 9 W v 0 CP 3 onstructe Riffle g OLEGEND / PARCEL BOUNDARY • `� ^� ROADS/TRAILS STREAM THALWEG ' TOP OF BANK Proposed Stream �/ PROPOSED TOP OF BANK Crossing o co 2'CONTOUR-EXISTING m W p U 10' CONTOUR -EXISTING POWER LINES O U SILT FENCE EXISTING STRUCTURE \\ PROPOSED DESIGN �_f \ CROSS VANE J-HOOK .G \ \ SINGLE ROCK VANE ,0 O` STREAM CROSSING kp��e ° =� CONSTRUCTED RIFFLE � � � C � roZ 5�0 f + TOE WOOD c N O CONSTRUCTION ACCESS :3 AND STAGING AREA of R1 O 4 ® \ .c U STOCKPILE C N J Q) ro - � z U ai O U w. c) 0 0 � � /a Sheet TO THE BEST OF MY KNOWLEDGE, JUDGMENT, > AND BELIEF THESE PLANS AL AND STATE LENRCS i7/ RESOURCE REGULATIONS. RDSANDLOCALANDSTATE L / 1 N STITUTE\1 �\ — A O , 5� �(:�;, P<IN �V 5 � / O Proposed Stream Q / x1 Crossing PO 1 a Constructed Riffle a v� � f i 1 1 onst ucted Riffl � x Constructed Riffle Constructio 5� Entrance Confluence of Unnamed Tributary 1 � 1 Proposed Str m , io oovo .o 00 ,6 00 oovo / ' o�oo `Jo" oovo 00000 � / o0000 oovo N ' 0 8 0 E F et c 1:480 0 CP 3 �*�\ o c�pe PNx \/ �xz Proposed Stream Crossing nstructe Riffle D� �5 PO 5� X, \04� N RCS, LNRCS ST OF MY KNOWLEDGE, JUDGMENT, F THESE PLANS MEET APPLICABLE > N DAR DS AND LOCAL AND STATE RESOURCE ONS. I NI N STITUTEE LEGEND / PARCEL BOUNDARY -O%o,O* ROADS/TRAILS STREAM THALWEG TOP OF BANK PROPOSED TOP OF BANK 2'CONTOUR-EXISTING 10' CONTOUR -EXISTING �✓ POWER LINES SILT FENCE BLoG EXISTING STRUCTURE PROPOSED DESIGN CROSS VANE O N qm V Z N ¢ O m OY g W U J-HOOK SINGLE ROCK VANE STREAM CROSSING 0 o N CONSTRUCTED RIFFLE + cu TOE WOOD ro CONSTRUCTION ACCESS LO O AND STAGING AREA c') o 0 Q N Z ® STOCKPILE 0 O roU U cn Q) ro U C2 rr^1^ vJ Sheet 3117 145 V// U rA • , to 0 30 60 120 N Feet w E, 1.3 0 / s LEGEND .0 XN- C M X Q ' J / / v ' / i' Proposed Stream Q" j XA Crossing CO i _� O PARCEL BOUNDARY ROADS/TRAILS STREAM THALWEG TOP OF BANK PROPOSED TOP OF BANK 2'CONTOUR-EXISTING 10' CONTOUR -EXISTING �✓ POWER LINES SILT FENCE EXISTING STRUCTURE PROPOSED DESIGN CROSS VANE J-HOOK SINGLE ROCK VANE STREAM CROSSING CONSTRUCTED RIFFLE Mom- TOE WOOD CONSTRUCTION ACCESS AND STAGING AREA ® STOCKPILE Constructed Riffle N I D r C / v 1 / TO THE BEST OF MY KNOWLEDGE, JUDGMENT, AND BELIEF THESE PLANS MEETAPPLICABLE RESOURCE STANDARDS AND LOCAL AND STATE / RESOURCE REGULATIONS. _ 1 N STITUTE , , f,-- m O m N Z N Y g q m ¢ W V O U +o ro 0 O O co roz co co U Q) rro QU �� LQO Q3 C2 Sheet 4/ 17 Dutch Creek Longitudinal Profile C ZM� :�� N � Proposed Streaml Confluence of Unnam Constructed Riffle Constructed Riffle Proposed Bankfull lExisting Water Surface 5 Q J-Hook 2 Single Cross Vane 2 J-Hook Station=7+85.00 Crossing Tributary Existing Thalweg Proposed Stream P Thalweg O O �n O Single Cross Vane 1 J-Hook 3 Constructed Riffle Station elev = 2657.20 Station=4+42.40 elev = 2656.61 CrossingProposed elev = 2656.40 O , r Cross Vane 1 Station=5+46.00 J-Hook 1 St Station=0+47.00 Station=1+38.00 elev = 2656.90 Station=3+47.00 elev = 2657.00 S Hook 4 Station=6+61.00 W m v = 2657.60 elev = 2656.80 elev = 2656.60 266 --- C/) — X m V + CP + n w + +w W co oSS C 265 00 00 00 00 00 00 00 00 00 00 R� Ox yx ,Lx ,y�x �x �x Ox ,fix �x Ox Ox Station Tributary Longitudinal Profile m 1010 rfl xistingGround Bench Maximum < < 1005 — � wb� _» P�oPos� seam csod+e P�°vied ear,krwi Cross Vane 1 rt �b{(f Proposed m+wev Station=0+77.00 O 1000 266 elev = 2658.00 < Cross Vane 2 Station=0+98.00 995 Cn C elev = 2657.50 O 265 m O O '� ro °� Q2 Ox� Station Ox� Ox� -j co ro 0 Q) ro Station Zco0 J N RCS sheet LEGEND EXISTING PROPOSED WATER PROPOSED TO THE BEST OF MY KNOWLEDGE,JUDGMENT, AND BELIEF THESE PLANS MEET APPLICABLE 5/ 17 CONDITION CONDITION SURFACE BANKFULL NRCS STANDARDS AND LOCAL AND STATE > RESOURCE REGULATIONS. �' I N STITUTE DC XS 1 m 267 m 2670— fD --- -- --------- rr 266 ------------ .-- rr 2660— 265 2655— O O �o pxp �xp �xp pxp0 Station DC XS 3 m 267 fD ---- rr 266-------- 265 Ox00 yx00 yxl� Station DC XS 5 m 267 fD rr 266 --- - ----- - 265 ----- -- Ox00 Ox00 Station EXISTING PROPOSED EXISTING PROPOSED CONDITION CONDITION BANKFULL BANKFULL DC XS 2 Station DC XS 4 m 267 fD r-r 266 O 265 00 Ox Station DC XS 6 m 2670— fD - r r 2660— O - 2655— 00 px Station v N RCS TO THE BEST OF MY KNOWLEDGE, JUDGMENT, AND BELIEF THESE PLANS MEET APPLICABLE RESOURCE REGULATIONS. No NRCS STAN DAR DS AND LOCAL AND STATE N STITUTE m Z N N Y g q m ¢ w V O U Z ro � c U ro LLl O � roZ C/) Cc 0 s; ro ca") U CC U Y � rro U Q C2 0 Sheet 6117 o -100) o� � cl) � " � N � � Q DCXS7 DC XS 8 W 267 m 267 a, < (D d < N r r 266 ------ U O r�r 266 265 O w 265 O R Ox0 Ox� 00 O� Ox Ox Station Station DC XS 9 DC XS 10 m m 267 266 < ----- r r 266 O 265 2654 00 00 ,tit 00 00 y�o & yx l Qx yx yx Station EXISTING PROPOSED 5EXISTING PROPOSED CONDITION CONDITION BANKFULL BANKFULL Station \6itai N RCS TO THE BEST OF MY KNOWLEDGE, JUDGMENT, No AND BELIEF THESE PLANS MEET APPLICABLE AND LOCAL AND STATE RESOURCE REGU ATIONSRDS fNSTITUTE m V O U O z 00 I� ro ro U U o LQ =:E cn � cn roz 0 c �.� ro 0 cc oro ro U Wv 0 Qz U �� U c� Sheet 7117 UNNAMED TRIBUTARY TO CALL CREEK CROSS -SECTIONS TXS1 M O S Ox00 Ox.�'y I TYPICAL CROSS SECTIONS M O S EXISTING CONDITION DC Riffle Bankfull Dimensions 108.1 x-section area (ft.sq.) 42.0 width (ft) 2.6 mean depth (ft) 3.4 max depth (ft) 43.1 wetted parimeter (ft) 2.5 hyd radi (ft) 16.3 width -depth ratio Station Dutch Creek Typical Cross-section Station PROPOSED PROPOSED TYPICAL SCOUR CONDITION BANKFULL POOL DC Meander Pool Bankfull Dimensions 124.0 x -section area (ft.sq.) 40.0 width (ft) 3.1 mean depth (ft) 5.0 max depth (ft) 41.8 wetted parimeter (ft) 3.0 hyd radi (ft) 12.9 width -depth ratio DC Scour Pool (Structures) Bankfull Dimensions 135.0 x-section area (ft.sq.) 42.0 width (ft) 3.2 mean depth (ft) 5.0 max depth (ft) 43.6 wetted parimeter (ft) 3.1 hyd radi (ft) 13.1 width -depth ratio 267 M O 266 2655-1 00 O" ------------ TYPICAL MEANDER POOL UT Riffle Bankfull Dimensions 4.95 x-section area (ft.sq.) 7.3 width (ft) 0.678082 mean depth (ft) 0.9 max depth (ft) 7.724922 wetted parimeter (ft) 0.640783 hyd radi (ft) 10.76566 width -depth ratio TXS2 Station vN R C S C/)' R TO THE BEST OF MY KNOWLEDGE, JUDGMENT, p� AND BELIEF THESE PLANS MEET APPLICABLE Q NRCS STANDARDS AND LOCAL AND STATE 110 REGULATIONS. � O c w RESOURCE INSTITUTE � d N � � w Unamed TributaryTypical Cross-section M (D a) 266 r-r O� 265 Ox00 Oxy1 Station TYPICAL RIFFLE UT Pool Bankfull Dimensions 6.45 x-section area (ft.sq.) 7.3 width (ft) 0.883562 mean depth (ft) 1.5 max depth (ft) 8.008204 wetted parimeter (ft) 0.805424 hyd radi (ft) 8.262016 width -depth ratio M 5� m W ° U N Z N Y g 2 O O U N o - U 0 cc U cc Q m w Z Z Sheet 8117 Dutch Creek Stream Assessment Parameters Existing Conditions Proposed Conditions Typical Cross Section Stream Type C4 C4 Drainage Area (sq mi) 10.9 10.9 Reach Slope (ft/ft) 0.0029 0.0021 Bankfull Area (sq ft) Avg: 102.1 / Range: 96.9-109.0 Avg: 108.1 108.1 Bankfull Width (ft) Avg: 39.4/ Range: 35.6-42.2 Avg: 42.0 42.0 Bankfull Depth (ft) Avg: 2.6/Range: 2.4-3.0 Avg: 2.6 2.6 Bankfull Max Depth Avg: 4.4 /Range: 3.8-4.8 Avg: 3.4 3.4 Bankfull Width / Depth Ratio Avg: 15.3 /Range: 12.0-16.7 Avg: 16.3 16.3 Bankfull Max Depth Ratio Avg: 1.7/Range: 1.4-2.0 Avg: 1.3 1.3 Bank Height Ratio Avg: 1.0/Range: 1.0-1.1 1 1.0 Entrenchment Ratio >2.2 >2.2 >2.2 Riffle Length (ft) Avg: 44.4/ Range: 30.7-50.9 Aug: 32.2/Range: 20.0-47.0 Riffle Length Ratio Avg: 1.1/Range: 0.$-1.3 Avg: 0.8/ Range: 0.5-1.1 Riffle Slope (ft/ft) Avg: 0.013 / Range: 0.005-0.021 Avg: 0.006/ Range: 0.003-0.009 Riffle Slope Ratio Avg: 4.5/Range: 1.6-7.2 Avg: 3.1/ Range: 1.7-4.6 Pool Area Avg: 142.4/ Range: 95.9-208.3 Avg: 129.6/Range: 119.4-142.5 124 Pool Bkf Width Avg: 45.7 / Range: 30.6-63.6 Avg: 41.9/ Range: 40.0-45.0 40.0 Pool Bkf Depth Avg: 3.1/ Range: 2.5-3.3 Avg: 3.1/ Range: 2.9-3.2 3.1 Pool Max Depth Avg: 5.1/Range: 4.7-5.9 Avg: 4.8/ Range: 4.0-5.0 5.0 Pool Length (ft) Avg: 176.9/ Range: 95.0-225.0 Avg: 117.3/Range: 55A-1.76A Pool Length Ratio Avg: 4.5/Range: 2.4-5.8 Avg: 2.8/Range: 1.3-4.2 Pool to Pool Spacing (ft) Avg: 220.7/Range: 125.7-273.0 Avg: 147.0/ Range: 84.2-219.8 P-P Spacing Ratio Avg: 5.7/Range: 3.2-7.0 Avg: 3.5/ Range: 2.0-5.2 D50 (mm) Avg: 14.0 Avg: 14.0 D84 (mm) Avg: 59.0 Avg: 59.0 o��o o C2 Z 6 r = c c 0 c 0 W a� a� c c W T� Dutch Creek Geomorphology Bankfull CROSS SECTION Area Width De th Width/Depth Entrenchment hkfl 6kfl p hk#I Ratio* 1 105 38.1 2.8 13.8 5 2 117 33.7 3.5 9.7 6 2 Proposed 117 42 2.8 15.1 5 3 124 34.8 3.6 9.8 6 3 Proposed 130 42 3.1 13.6 5 4 117 49.3 2.4 20.8 4 5 176 63.4 2.8 22.8 3 6 121 44.5 2.7 16.4 4 6 Proposed 123 48 2.6 18.7 4 7 110 51.8 2.1 24.4 4 7 Proposed 120 42.3 2.8 14.9 5 8 122 40 3.1 13.1 5 8 Proposed 129 40 3.2 12.4 5 cn 9 120.7 40.3 3.0 13.5 5 'O m ¢S ro U 10 106 29.3 3.6 8.1 7 ¢ o '10 Proposed 114 37 3.1 12,0 5 Wp � ro z Ref Reach 120.5 41 2.9 14.0 5 Z r �WWfpa > O m n U .� o ro U C ro °' U 0 �U � � o *Cross vane has no step **Structures are keyed in at 3/4 bankfull at the Downstream End v*4, Otai N R C S Sheet TO THE BEST OF MY KNOWLEDGE, JUDGMENT, i?� ) AND BELIEF THESE PLANS MEETAPPLICABLE USOU&C.E REGUNo NRCSATIONSSTAN RDS AND LOCAL AND STATE /�/ J INSTITUTE / / Dutch Creek Structure Elevation Table 1 2 3 4 4 5 6 7 Structure Type JH1 SV1 JH2 JH3 5V2 CV1* JH4 JH5 Apex Sta. (ft) 0+47,0 1+38.0 2+53,0 3+45,0 4+42.0 5+46.0 6+61.0 7+85.0 Downstream Sta. (ft) 0+85.5 1+76.5 2+91.5 3+83.5 4+80.5 5+84,5 6+99.5 8+23,5 Stream Length (ft) 38.50 38.50 38.50 38.50 38,50 38,50 38.50 38,50 Vane Length (ft) 40.90 40.90 40.90 40.90 40.90 40.90 40.90 40.90 Apex/Invert BKF EL. (ft) 2661.00 2660,90 2660,60 2660.40 2660.40 2660.20 2660.00 2659,80 Top of Apex Header EL. (ft) 2658.60 2657,90 2658,20 2658A0 2657.60 2657.80 2657.60 2657,40 Apex/InvertTW EL, (ft) 2657.60 2656.90 2657.20 2657.00 2656,60 2656,80 2656,60 2656,40 Downstream BKF EL. (ft) 2660.90 2660,80 2660,50 2660.30 2660.40 2660.10 2659.90 2659,70 3/4Tie-In BKF EL.** 2660,10 2660,00 2659,70 2659.50 2659.60 2659.30 2659.10 2658,90 Vane Slope (%) 3.67 5,13 3,67 3,67 4,89 3,67 3,67 3,67 NC Rural Mountain Area 107.0855 Q 575.5618 Width 45.01617 De pth 2.32769 Dutch Creek Typical Structure Dimension Table Bankfull Width 42.00 1/3 Bankfull Width 14.00 Vane Arm Angle (deg) 20.00 Stream Length (ft) 38.46 Vane Arm Length (ft) 40.93 Vane Slope (%) 3.66 Vane Arm Height (ft) 1.50 Bankfull Max Depth (ft) 3.40 3/4Bankfull Max Depth (ft)** 2.60 TW Elevation Change (ft) 0.10 *Typical Structure table does not include Single Rock Vanes **Structures are keyed in at 3/4 bankful! at the Downstream End Unamed Tributary Stream Assessment Parameters Existing Condition Proposed Condition Typical Cross Sections Stream Type E4 E4 E4 Drainage Area (sq mi) 0.12 0.12 Reach Slope (ft/ft) 0.0130 0.0150 Bankfull Area (sq ft) Avg: 4.8 Avg: 5.0 5.0 Bankfull Width (ft) Avg: 6.5 Avg: 7.3 7.3 Bankfull Depth (ft) Avg: 0.8 Avg: 0.7 0.7 Bankfull Max Depth Avg: 1.2 Avg: 0.9 0.9 Bankfull Width/Depth Ratio Avg: 8.6 Avg: 10.8 10.8 Bankfull Max depth Ratio Avg: 1.6 Avg: 1.3 1.3 Bank Height Ratio Avg: 2.4 Avg: 1.0 1.0 Entrenchment Ratio Avg: 1.4 Avg: 3.1 3.1 Riffle Length (ft) Avg: 20.0/Range: 12.6-31.9 Avg: 15.8/ Range: 12.6-17.6 Riffle Length Ratio Avg: 3.1/ Range: 2.0-4.9 Avg: 2.2 /Range: 1.7-2.4 Riffle Slope (ft/ft) Avg: 0.0270/Range: 0.0160-0.0410 Avg: 0.0290/ Range: 0.0160-0.0410 Riffle Slope Ratio Avg: 2.1/Range: 1.2-3.2 Avg: 1.9 /Range: 1.1-2.7 Pool Area Avg: 4.7 Avg: 6.5 6.5 Pool Bkf Width Avg: 5.5 Avg: 7.3 7.3 Pool Bkf Depth Avg: 0.9 Avg: 0.9 0.9 Pool Max Depth Avg: 1.6 Avg: 1.5 1.5 Pool Length (ft) Avg: 7.5/ Range: 6.6-8.5 Avg: 6.0/ Range: 2.8-8.5 Pool Length Ratio Avg: 1.2/ Range: 1.4-1.3 Avg:0.8 / Range: 0.4-1.2 Pool to Pool Spacing (ft) Avg: 29.8 /Range: 19.1-40.4 Avg: 21.8 / Range: 19.1-26.1 P-P Spacing Ratio Avg: 4.6/ Range: 3.0-6.3 Avg: 3.0 /Range: 2.6-3.6 D50(mm) D84(mm) Unamed tributary Structure Elevation Table Structure Type CV* CV* Apex Sta. (ft) 0+77.0 0+98.0 Downstream Sta. (ft] 0+$3.7 1+04.7 Stream Length (ft) 6.7Q 6.70 Vane Length (ft) 7.10 7.10 Apex/Invert BKF EL. (ft) 2658.90 265$.$Q Top of Apex Header EL. (ft) 2658.30 2658.50 Apex/Invert TW EL. (ft) 2658.00 2657.50 Downstream BKF EL. (ft) 2658.80 2658.80 3/4Tie-In BKF EL.** 2658.60 2658.2Q Vane Slope (%) 4.23 4.23 �z 100) l) 0 O W Z cn a� a� c c w T� *Cross vane has no step **Structures are keyed in at 314 Bankfull at the Downstream End m O U m Z N y g N U m O O U o ,o � ' ro ro o _ a �z CC ro 0 � � ro ro o .c U U C ro °' **Structures are keyed in at 314 bankfull at the � � � ro CC a? Downstream End z C O �0 �04� N RCS C2 -fo Sheet �TITHIIIIITIIMIlrlllVlll.1,111.MlrlT, 77��r�p > ANDNRC BELIEF THESE PLANS MEET APPLICABLE MOUKCE REGULATIONS. RDS AND LOCAL AND STATE 1 INSTITUTE 0/ Unamed Tributary Typical Structure Dimension Table Bankfull Width 7.30 1/3 Bankfull Width 2.43 Vane Arm Angle (deg) 20.00 Stream Length (ft) 6.69 Vane Arm Length (ft) 7.11 Vane Slope (%) 4.22 Vane Arm Height (ft) 0.30 Bankfull Max Depth (ft) 0.90 3/4 Bankfull Max Depth (ft)* 0.68 TW Elevation Change (ft) 0.10 PROJECT SPECIFICATIONS. t'LAIN VItW TYPICAL CHANNEL RE -VEGETATION PLAN VIEW DETAIL SYMBOL DESCRIPTION SYMBOL DESCRIPTION NATIVE SOD MATTING AND/OR EROSION CONTROL FABRIC ARE TO BE NATIVE TREE AND SHRUB PLACED ON NEAR BANK AND DISTURBED AREAS WHEN AVAILABLE. (BAREROOT OR 1-3 GALLON 1. SEED IMMEDIATELY WITH TEMPORARY RYEGRASS. 2. FOLLOWING CONSTRUCTION,AREATOBE SEEDED WITH A SPECIES TO BE PANTEDATA SPECIES SUFFICIENT TO PROVIDE 400 TREES/ACRE AT MCONTAINERS) PERMANENT GRASS/HERB MIXTURE. MATTING AND FABRIC ARE TO BE STAKED DOWN WITH LARGE STAPLES AND/OR NATIVE/WOODY MATURITY-FLOODPAIN SPECIES INCLUDE BUTARENOTLIMITEDTO: STAKES. A,R—b.., Am 1—hiR, 3. LIVESTAKE SPECIES INCLUDE BUT ARE NOT LIMITED TO: arborea, BRCRIR Rigm, 11—pp., lugfa d, RigO,, LiOwd-d— ORmRSRmo ,Phys ,pu, RpRlifWm,, SWix R—w,S—b—, tRlipiip", MW........i" mnadensa. Phy,o 'PR, RPWifWim' Qu .' ,RbO,, etc. EROSION CONTROL MATTING 12" q 6�� IIIIIIIIII =11- �� n = 6 I IIIIIII I II�III IIIIIIIIII _— II A B CRITICAL POINTS A. Overlaps and Seams NOTE: Projected Water Line . . . .� . . *IN LOOSE SOIL CONDITIONS, C. Channel Bottom/Side- THE USE OF STAPLE OR STAKE Slope Vertices LENGTHS GREATER THAN 6" (15 CM) MAY BE NECESSARY TO A PROPERLYSECURETHE B I III I�frE=�. III BLANKETS. C FU_ I III III II II � � �➢�iiii�i IIIIII II III III SLOPE INSTALLATION INSTRUCTIONS: 1. PREPARE SOIL BEFORE INSTALLING BLANKETS, INCLUDING ANY NECESSARY APPLICATION OF LIME, FERTILIZER, AND SEED. 2. BEGIN AT THE TOP OF THE SLOPE BY ANCHORING THE BLANKET IN A 6" (15 CM) DEEP X 6" (15 CM) WIDE TRENCH WITH APPROXIMATELY 12" (30CM) OF BLANKET EXTENDED BEYOND THE UP -SLOPE PORTION OF THE TRENCH. ANCHOR THE BLANKET WITH A ROW OF STAPLES/STAKES APPROXIMATELY 12" (30 CM) APART IN THE BOTTOM OF THE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING. APPLY SEED TO COMPACTED SOIL AND FOLD REMAINING 12" (30 CM) PORTION OF BLANKET BACK OVER SEED AND COMPACTED SOIL. SECURE BLANKET OVER COMPACTED SOIL WITH A ROW OF STAPLES/STAKES SPACED APPROXIMATELY 12" (30 CM) APART ACROSS THE WIDTH OF THE BLANKET. 3. ROLL THE BLANKETS INDIRECTION OF WATER FLOW. BLANKETS WILL UNROLL WITH APPROPRIATE SIDE AGAINST THE SOIL SURFACE. ALL BLANKETS MUST BE SECURELY FASTENED TO SOIL SURFACE BY PLACING STAPLES/STAKES INAPPROPRIATE LOCATIONS AS SHOWN IN THE STAPLE PATTERN GUIDE. WHEN USING THE DOT SYSTEM, STAPLES/STAKES SHOULD BE PLACED THROUGH EACH OF THE COLORED DOTS CORRESPONDING TO THE APPROPRIATE STAPLE PATTERN. 4. THE EDGES OF PARALLEL BLANKETS MUST BE STAPLED WITH APPROXIMATELY 2" - 5" (5 CM - 12.5 CM) OVERLAP DEPENDING ON BLANKET TYPE. 5. CONSECUTIVE BLANKETS SPLICED DOWN THE SLOPE MUST BE PLACED END OVER END (SHINGLE STYLE) WITH AN APPROXIMATE 3" (7.5 CM) OVERLAP. STAPLE THROUGH OVERLAPPED AREA, APPROXIMATELY 12" (30 CM) APART ACROSS ENTIRE BLANKET WIDTH. 5. PLACE CONSECUTIVE BLANKETS END -OVER -END (SHINGLE STYLE) WITH A 4"-6" OVERLAP. USE A DOUBLE ROW OF STAPLES STAGGERED 4" APART AND 4" ON CENTER TO SECURE BLANKETS. 6 FULL LENGTH EDGE OF BLANKETS AT TOP OF SIDE SLOPES MUST BE ANCHORED WITH A ROW OF STAPLES/STAKES APPROXIMATELY 12"(30CM) APART IN A 6"(15CM) DEEP X 6"(15CM) WIDE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING. 7. ADJACENT BLANKETS MUST BE OVERLAPPED APPROXIMATELY 2"-5" (5-12.5CM) (DEPENDING ON BLANKETS TYPE) AND STAPLED. COMBINATION OF CONT4INER OR 34RE-ROOT NATI1 E TREES &/OR SHRUBS )SEE PI AN VIEW DETAIL FOR SPECIES) \ CROSS-SECTION INSPECTION AND MAINTENANCE: This consists primarily of two components, stream stabilization structures (J-Hooks, Cross vanes, etc.) and planting of the stream banks and riparian areas. In the event that the stream structures shift, wash away, settle, or otherwise physically cannot function as designed, contact the area NRCS Agent. If the new plantings experience a mortality rate of greater than 25%, the dead/dying plants will need to be replaced. PERMANENT SEED MIX. APPLY AT 15 LBS PER ACRE OF DISTURBANCE (per specifications of seed supplier): ERNST CONSERVATION SEED MIX ERNMX-178 (FLOODPLAIN MIX) WHICH INCLUDES THE FOLLOWING SPECIES: Fox Sedge, Partridge Pea, Dear Tongue, Little Bluestem, Virginia Wild Rye, Riverbank Wild Rye, Swamp Sunflower, Ox Eye Sunflower, Arrow Wood, Big Bluestem, Silky Dogwood, Switchgrass, Indiangrass, Staghorn Sumac, Showy Tick Trefoil, Purple Bergamot, Black Eyed Susan, Joe Pye Weed , Soft Rush, Giant Ironweed, Tall White Beard Tongue, Spotted Joe Pye Weed, Bone Set, and Blue False Indigo. TEMPORARY SEED MIX AND SPECIFICATIONS: Common Name Scientific Name Rate per Acre Optimal Planting Dates Rye grain Secale cereale 30 Ibs Aug 15 - May 15 Browntop millet Urochloa ramosa 10 Ibs May 15 - Aug 15 Seedbed Preparation: Disturbed soils within riparian areas will be amended to provide an optimum environment for seed germination and seedling growth. Surface soils will be loose enough for water infiltration and root penetration. Lime will be added to the soil to ensure a pH level between 5.5 - 7. Fertilizer (18-46-0) will be added to nutrient deficient areas. All riparian areas will be raked to loosen compacted soil prior to seeding. TYPICAL BEDFORM GRADING DETAIL RUN POOL � ` OEZpE GJO "I NMI RUN POOL F/O�vy_ POOL � PLAN VIEW �\ /10, PI-40 N R C S v TO THE BEST OF MY KNOWLEDGE, JUDGMENT, �r ) AN D B ELI EF TH ES E PLANS M E ET AP PLICABLE IU:SOj.TI`CE CARDS AND LOCAL AND STATE REGULATIONS.INSTITUTE LQ 0 w N g m O O U Sheet 1/1 SINGLE ROCK VANE STRUCTURE MATERIAL NOTES: 1. ROCK DIMENSIONS SHALL BE APPROXIMATELY 1'-2' THICK, 2--3- WIDE, AND 3'-5' LONG. 2. ROCK SHALL BE NATIVE STONE HARVESTED LOCALLY OR FROM EXISTING STREAM. 3. THE ROCKS SHOULD BE RECTANGULAR OR NEARLY SO AT THE ROCK TO ROCK CONTACT. THE ROCK TO ROCK CONTACT SHOULD BE SOLID. IF ROCKS ARE NOT PERFECTLY FLAT, THE THICKER END SHOULD BE PLACED DOWNSTREAM. CONSTRUCTION NOTES: 1. THE LOWER ROCK (HEAD ROCK) FOOTER WILL FIRST BE PLACED FOLLOWED BY THE HEAD ROCK TO SET THE INITIAL STRUCTURE ELEVATION. 2. THE SUBSEQUENT ROCK (MOVING UPSTREAM) AND ASSOCIATED FOOTERS WILL THEN BE SET SIGHTING THE PROPOSED 20-30° BANK DEFLECTION LINE. 3. ROCK PLACEMENT FOLLOWS MOVING UPSTREAM AT A 2-7% SLOPE UNTIL A BANKFULL ELEVATION IS REACHED AT THE END OF THE STRUCTURE WING. 4. A ROCK SILL WILL THEN BE CONSTRUCTED PERPENDICULAR TO THE STRUCTURE ANGLE TO PREVENT THE FORMATION OF A CUTOFF CHANNEL. 5. A TRENCH SHALL BE DUG UPSTREAM ON THE BANKSIDE OF THE WING WHERE NON -WOVEN GEOTEXTILE FABRIC WILL BE PLACED WITH APPROX. 2' OF OVERLAP 6. BACKFILL TRENCH WITH NATIVE MATERIALS AND RE -VEGETATE. 114-113 F_ A E STONE AND COBBLE CROSS-SECTION SUR CEROCK FOOTER ROCK(S) 2%ID 1S,00� 0 3i YJ� NONWOVEN GEOTEXTILE -O U FABRIC Qt, — FLOW (TYP) B-B' PROFILE VIEW N07 LON PRO LEN NOTE: UTILIZE NATURAL SUB � EXCAVATED FR SCOUR POOLS MEDIAN PARTI SIZE 1 "-3 ". LINE ENTIRE ACTIVE BED WITH TO PREVENT TOE OF BANK) CONSTRUCTED RIFFLE PLAN VIEW LARGE COBBLE/ SMALL BOULDER A' BA A -A' CROSS-SECTION NOTES: LLl MATERIAL TOP OF BANKr TOE OF BANK `LARGE WOODY DEBRIS 1. CONSTRUCTED RIFFLES ARE INSTALLED ONLYAT LOCATIONS DESIGNATED ON SITE PLAN AT ELEVATIONS PROVIDED IN THE LONGITUDINAL PROFILE. ALL OTHER PROPOSED RIFFLES IN THE PROFILE WILL FORM NATURALLY OVER TIME. 2. CONSTRUCTED RIFFLES INSTALLED WHERE NATURAL CHANNEL FACETS HAVE SHIFTED DURING LATERAL MIGRATION OF CHANNEL, AND RIFFLE MUST BE SHIFTED OUT OF MEANDER BEND. 3. CONSTRUCTED RIFFLES ESTABLISH GRADE UPSTREAM OF INSTREAM STRUCTURES TO STABILIZE BOTH PROFILEAND PATTERN. 4. ADD SMALL BOULDER/LARGE COBBLEAND LARGE WOODY DEBRIS TO CREATE HETEROGENEITY IN SUBSTRATE FLOW. TOP OF BANK PT-4 �04� N R C S TO THE BEST OF MY KNOWLEDGE, JUDGMENT, U AND BELIEF THESE PLANS MEET APPLICABLE iy_SOURCE NRCS STANDARDS AND LOCAL AND STATE REGULATIONS.INSTTl'U'I'E m m O U m Z N Y g m O O U ro cn O c O CC) co ro O Q)CC z ro O c 0 ro o O .c U U C/) U Q) ro O i 0 C/)U � U O p 0 co U c C2 Sheet 211 ROCK ]-HOOK VANE STRUCTURE MATERIAL NOTES: 1. ROCK DIMENSIONS SHALL BE APPROXIMATELY 1'-2' THICK, 2'-3' WIDE, AND 3'-5' LONG. 2. ROCK SHALL BE NATIVE STONE HARVESTED LOCALLY OR FROM EXISTING STREAM. 3. THE ROCKS SHOULD BE RECTANGULAR OR NEARLY SO AT THE ROCK TO ROCK CONTACT. THE ROCK TO ROCK CONTACT SHOULD BE SOLID. IF ROCKS ARE NOT PERFECTLY FLAT, THE THICKER END SHOULD BE PLACED DOWNSTREAM. CONSTRUCTION NOTES: 1. STRUCTURE DIMENSION, ELEVATION, AND LOCATION LOCATION DETAILS PROVIDED IN TABLES. 2. THE LOWER ROCK FOOTER WILL FIRST BE PLACED FOLLOWED BY THE HEADER ROCK TO SET THE INITIAL STRUCTURE ELEVATION. 3. THE SUBSEQUENT ROCK (MOVING UPSTREAM) AND ASSOCIATED FOOTERS WILL THEN BE SET SIGHTING THE PROPOSED 20-30' BANK DEFLECTION LINE. 4. ROCK PLACEMENT FOLLOWS MOVING UPSTREAM AT A 2-7% SLOPE UNTIL A BANKFULL ELEVATION IS REACHED AT THE END OF THE STRUCTURE WING. 5. A ROCK SILL WILL THEN BE CONSTRUCTED PERPENDICULAR TO THE STRUCTURE ANGLE TO PREVENT THE FORMATION OF A CUTOFF CHANNEL. 6. A TRENCH SHALL BE DUG UPSTREAM ON THE BANKSIDE OF THE VANE ARM WHERE NON -WOVEN GEOTEXTILE FABRIC WILL BE PLACED WITH APPROX. 2' OF OVERLAP 7. BACKFILL TRENCH WITH NATIVE MATERIALS AND RE -VEGETATE. Q VANE ARM APEX ROCK �I �" GAPS 114 TO 113 R( j DIAMETER IN HOOK I RUN HEADER ROCK >� FOOTER ROCK NON -WOVEN GEOTE)MLE FABRIC E STONE AND COBBLE SUR CE ROCK FOOTER ROCK(S) NON -WOVEN GEOTEXTILE - FABRIC CUT-OFF SILL Q PLAN VIEW 1 A -A' CROSS-SECTION B-B' PROFILE VIEW MATERIAL NOTES: 1. ROCK DIMENSIONS SHALL BE 1'-2' THICK, 2'-3' WIDE, AND 3'-5' LONG. 2. ROCK SHALL BE LOCALLY HARVESTED NATIVE STONE. 3. THE ROCKS SHOULD BE RECTANGULAR OR NEARLY SO AT THE ROCK TO ROCK CONTACT. THE ROCK TO ROCK CONTACT SHOULD BE SOLID. IF ROCKS ARE NOT PERFECTLY FLAT, THE THICKER END SHOULD BE PLACED DOWNSTREAM. CUT-OFF SILL (TYP) CONSTRUCTION NOTES 1. STRUCTURE DIMENSION, ELEVATOR, AND LOCATION DETAILS PROVIDED IN TABLES. 2. CONSTRUCTION SHALL BEGIN WITH THE INSTALLATION OF THE VANE ARM PORTIONS OF THE STRUCTURE INCLUDING HEADER AND FOOTER ROCKS. B' 3. ARM ANGLE AND SLOPE WILL BE STAKED OUT OR VERIFIED BY 4. CONSTRUCTION OVERSIGHT STAFF PRIOR TO CONSTRUCTION. GEOTEXTILE CLOTH WILL BE PLACED AGAINST THE OUTSIDE EDGE OF THE THE VANE ARM BOULDERS. GLIDE 5. THE VANE ARM CUT-OFF SILLS WILL BE CONSTRUCTED PERPENDICULAR TO THE ARM ANGLE TO PREVENT THE FORMATION OF A CUTOFF CHANNEL. 6. IN THE CENTER (CROSS) PORTION THE HEADER ROCKS SHALL BE PLACED SO THAT THE TOP OF THE FOOTER ROCK IS AT AN ELEVATION EQUAL TO THE PROPOSED BED ELEVATION. 7. GEOTEXTILE FABRIC SHALL BE PLACED ALONG THE ARM TRENCH WITH APPROX. 2 FT. OF OVERLAP. S. ROCK FILL MATERIAL SHALL BE BACK FILLED AROUND THE FABRIC. 9. THE HEADER ROCKS ON THE VANE ARM PORTION SHALL BE PLACED SO THAT THEY SLOPE UP FROM THE BED ELEVATION AT CUT-OFF SILL (TYP) THE CROSS PORTION, TO A BANKFULL ELEVATION AND MEET THE BANK AT A 150-22o ANGLE. 'R ROCK ROCK FOOTER •I I �.`,I�I��`I`I'i NOTE: POOL STEP OMITTED FOR CLARITY GAPS -4 - j ROCK DIAMETER )NE AND COBBLE ROCK A -A' CROSS-SECTION 0 PROFILE VIEW B-B' SURFACE ROCK z 'OBBLE RAMP n 3 A' 1 1 SET TOP OF FOOTER TO MATCH THALWEG ELEVATION IN / NOTE: DETAIL BAS:D ON SIMILAR DILATE By ROSREN. wnDLAmD HvoaoLoev, 2011 -PT-4 �105� N R C S TO THE BEST OF MY KNOWLEDGE, JUDGMENT, AND B ELI EFTHESE PLANS MEET APPLICABLE NRCS iV.:SO V 1�s.,E STANDARDS AND LOCAL AND STATE REGULATIONS.INSTTl'U'I'E ROCK W m m O U N Z N y g m O O U Sheet 311 BRACING ROC FLOW ROOTWAD REVETMENT ROOTWAD K� FOOTER ROCK PLAN VIEW P. LIVE STAKES _LN- - FOOTER ROCK A -A' B _ CROSS-SECTION COIR MATTING WOODEN STAKES ICING ROCK *TRUNK IS BELOW STREAM BED ROOTWAD w/ FOOTER LOG FOOTERLOG PLAN VIEW LIVE STAKES - COIR MATTING —iii III III WOODEN STAKES FOOTER LOG BRACING ROCK A -A' CROSS-SECTION *TRUNK IS BELOW STREAM BED N RCS TO THE BEST OF MY KNOWLEDGE, JUDGMENT, �r ) AND BELIEFTHESE PLANS MEETAPPLICABLE Iu:SOj.TI`CE NRCS STANDARDSAND LOCAL AND STATE REGULATIONS.INSTITUTE m m Z N Y g m O O U ro cn c O �2 ' u 'ro ro O IE co Q)CC z ro ro o U i 0 c/)U � U O C2 Sheet 411 Stream Crossing Cross -Section Grading (Berm or Diversion ditch) Looking Downstream At each end of crossing to prevent surface runoff from entering the crossing Bottom width: ft. Left ramp: ft. long, slope (% or H: V) Anchor post Right ramp: ft. long, slope ("/o or H:V) Min. dia. 5" Crossing surface width (parallel to flow): ft. Line post Min. dia. 3 1/2" . Surface Material & Thickness: ,r— Existing stream channel See Toe/\tv Trench Detail Fabric Filter Cloth Must meet NRCS Material Spec. 592 — Bottom width should — match stream bottom width Staples 5 foot O.C. See Detail St eam Crossing Plan 3:1 Cut slope Stream bottom Fence Post Fencing must meet Break Away Wire Fence Construction Specification 20% rn' V Overexcavate to install min. 8" thick gravel layer over fabric filter cloth. Gravel should be crusher run (road bond) or railroad ballast stone or a combination of both. Top of bank 3:1 Cut slope Stabilize all cut slopes immediately after construction See Toe Trench Detail Left ramp Bottom of crossing Right ramp See Fabric See Fabric — Lapping Detail— Trenching Detail 3:1 Cut slope �C-tl-pe 3 v, 2.0' Toe Trench Detail — 4" —� 0 0 0 o Ramp Psa 6" 0 0 0 0 0 0 0 0 o Staples shall be fabricated of No. 4 \ Rebar. 1.0' 2.0' 1.0' Fabric Filter Cloth Earth backfill Number of staples required for a 10 - 15 foot wide crossing can be estimated using this formula: Drive sharpened Staples required — (Length ofcrossingx 2.5) fence post + (Length of crossing /3) through trench All dimensions shown on this sheet are the minimum acceptible Stream flow Lap Fabric Filter Cloth as shown with respect to direction of stream flow hnstall staples 3.0 feet O.C. for the entire length of the lap Drive sharpened fence post through trench In order to install this lap as shown, stream 1.5' flow may need to be parially diverted twice while folding the fabric upstream on both sides of the stream bottom. Another, but less preferred, option is to cut the fabric in the center of the stream and overlap 18" using 3' O.C. staples. m Installation Notes: Material Quantities: Operate heavy grading equipment from the top of the banks to Filter Cloth: sq.ft. or sq.yd. the maximum extent possible. or lin.ft. from a foot wide roll. (Account for overlap at seams and fabric in trenches) Installation of the stream crossing shall not raise or lower the stream bed at the crossing. Do not manipulate the stream Number of staples required: channel upstream or downstream of the crossing unless specified in engineering plans. Crusher run (ABC) stone: Tons (length (ft.) x width (ft.) x gravel layer thickness in inches / 12 Cut slopes must be treated according to the 342 - Critical Area x 145 pcf / 2000 — Tonnage) Planting Job Sheet as soon as possible after grading. Ballast (3") stone: Tons Siting Notes: (length (ft.) x width (ft.) x gravel layer thickness in inches / 12 The crossing should be sited in a stable reach of the stream x 100 pcf / 2000 —Tonnage) where no erosion or deposition is occuring. Install in a relatively straight section. An instream structure for grade control (i.e. Rock Cross -Vane) may be needed to ensure stability of the crossing. Contact an engineer for assistance. The ideal siting location is either immediately downstream of Notekeeping: the head of a riffle or across a coarse bed glide immediately upstream of the head of a riffle. A crossing should not be sited in a run or pool. Animals and types of vehicles that will use crossing This standard design applies to most stream crossing scenarios in the western North Carolina mountians, foothills, and Name of stream Piedmont where stream bed material is predominately gravel. For sandy stream beds a different design may be necessary. ft.: Length of Crossing For cobble stream beds, a "ramp only" design may be more ft.: Width of Crossing appropriate. Contact engineering staff for assistance. acres: Drainage area of stream at crossing Operation and Maintenance: (check Job Approval Authority Chart) Install gates to exclude livestock from crossing at all times Manufacturer and grade of geotextile (fabric filter cloth) except when crossing is being used to move livestock. (Enter only on As -Built copy) Inspect the crossing and the fencing after any significant rainfall event. Repair the fence according to the Break Away Location of site survey notes and any other design Wire Fence Construction Specification. documentation If sediment or other debris accumulates at the bottom of the ramps, carefully remove without damaging stone base or filter cloth. Spoil material shall not be placed in the stream. Contact SWCD or NRCS personnel if problems with the crossing or components of the crossing arise. No �64� RESOURCE INSTTl'U'I'E 11CZ� TO THE BEST OF MY KNOWLEDGE, JUDGMENT, AND BELIEF THESE PLANS MEET APPLICABLE NRCS STANDARDS AND LOCAL AND STATE REGULATION S. N Z N Y g m O O U Sheet 511 �z 100) Z cc o Cl) �_ Z c� 0 O w Line Post in i Floodway - Lightly Driven ; Staples with O wire on the Downstream Side of Post. £ Lu Cut fence and 6 lightly Secure v to post with +' Staple, Drive � 6" straight Into post pa allel to the grain. ®r!*-A� Breakaway Fence Attachment at Bankf U W dth Line Post Corner Post - Staples Firmly Driven at sligh m m O U m Z N Y g N � U m O O U c p o Conventional ' ,ro U Fence Attachment Q o _ at Corner Post p a roz 0 ro ro o U � U � = ro i 0 Cl) � � o C) C2 N RCS Sheet TO THE BEST OF MY KNOWLEDGE, JUDGMENT, P4 U AND BELIEF THESE PLANS MEET APPLICABLENRC �/ iV-.SOTIRCE REGULATIONS. ATIONSSTAN RDS AND LOCAL AND STATE INSTITUTE Construction Specification Break Away Wire Fence Construction 1. This specification is intended to be used in conjunction 6. The wires should always be fastened to the downstream with other fence specifications which provide details side of the posts for those posts that are in the relating to the type offence and the type of bracing floodplain and where the fence is crossing the stream required. Do not use this specification without the or is located in a position that is at or nearly accompanying specification which relates to the perpendicular to the flow of the stream. Otherwise the specific type of fence that is to be installed. This wires should be placed as indicated in the specification specification is not to be applied to a specific site for the specific type offence. unless the title block bears the name of the landowner/operator and the signature of the person 7. Comer posts should be properly braced as indicated in approving the specification for a particular site. the specification for the specific type offence. 2. "Break Away" fence construction is recommended for 8. For stream crossings similar to that shown in the fences that cross the stream or are at near illustrated drawing, it is possible that when multiple perpendicular angles to the stream and are to be strands "Break Away" during a flood event the strands located in the floodway or floodplain. The concept of may tangle up in the debris and be difficult to separate the "Break Away" fence is that the fence wire and reuse. In this case it may be easier to replace the segments will separate and trail downstream when tangled strands with new wire. It may be significant debris lodges on the wire. After the high advantageous to stagger the break away strands on water subsides the operator can easily restore the fence alternate posts on either side of the stream. with a hammer and a few replacement staples. 9. The illustrated drawing for the "Break Away" fence 3. The "Break Away" fence involves lightly fastening the uses a stream crossing as the example in the plan view. wires of each strand on the downstream side of the Other applications include property line fences or fence post for all posts that are in the floodway. The divisional cross fences which cross the floodway or wires are cut at one or more points so that the wire is floodplain perpendicular or nearly perpendicular to the not continuous across the floodway. A minimum floodplain but do not actually cross the stream. overlap of six (6) inches of wire should be allowed on either side of the securing staple. Cutting the fence 10. CAUTION: Do not use barbed wire for break away allows it to pull away from the fence posts during high fences where livestock may become entangled and water events and trail downstream rather than injured by the trailing break away strands. High - accumulating debris that eventually either breaks the tensile wire or other smooth wire should be used at fence, pulls out the fence posts, creates a scour hole, or locations where such entanglement and injury are TEMPORARY CONSTRUCTION EXIT DETAIL 50' MIN. EXISTING NATURAL GROUND PUBLIC ROAD CLEAN WASHED STONE SIZES 3" UNDERCUT PRIOR TO - FROM 2" TO 4" 8" DEPTH PLACEMENT OF MACHINED ' ; RIPRAP GEOTEXTILE FABRIC SHALL BE TEMPORARY DRAINAGE PLACED UNDER ENTIRE PIPE WHERE NEEDED WIDTH OF RIPRAP SECTION A -A EDGE OF PUBLIC ROAD FAI WIRE -BACKED SILT FENCE PLACE WOVEN WIRE FENCE BACKING BETWEEN FABRICAND POSTS AND FASTEN SECURELY. 48"MINIMUM LENGTH STEEL POST 4' MAX CENTER DRI VEN A MINIMUM OF 18" INTO -m 1-1— GROUND U4+41 28" MINIMUM HEIGHT OF GEOTEXTILE CLASS F 6"MINIMUM DEPTH IN GROUND FLOW FLOW PLACE WOVEN WIRE FENCE BACKING BETWEEN FABRIC 48" MINIMUM STEEL AND POSTS AND FASTEN PERSPECTIVE VIEW POST LENGTH __—�F- T i — SECURELY. FILTER STEEL POST SECTION CLOTH —MINIMUM 30"ABOVE GROUND FLOW UNDISTURBED GROUND EMBED GEOTEXTILE CLASS F ' A MINIMUM OF6" VERTICALLY f MINIM INTO THE GROUND MINIMUM OF 18 "INTO y 2, THE GROUND POSTS SECTION B CROSS-SECTION SECTION A TOP VIEW (JOINING TWO ADJACENT SILT FENCE SECTIONS) FAI 50' MIN. / CLEAN WASHED STONE SIZES FROM 2" TO 4" 8" DEPTH WITH GEOTEXTILE FABRI TEMPORARY DRAINAGE ®rl..'i-i PIPE WHERE NEEDED NOTES: 1. STEEL POSTS SHALL BE A MINIMUM OF 48" LONG DRIVEN A MINIMUM OF 18" INTO THE GROUND. THE STEEL POSTS MAY BE A STANDARD TOR U SECTION WEIGHING NO LESS THAN 1.3 LBS/FT. 2. GEOTEXTI LE AND WOVEN WIRE FENCE BACKING SHALL BE FASTENED SECURELY TO EACH POST FROM TOP TO GROUND LEVEL AND THE GEOTEXTILE SHALL MEET THE FOLLOWING REQUIREMENTS: TENSILE STRENGTH WARP 260 LBS/IN. (MIN), FILL 180 LBS/IN. BURSTING STRENGTH 175LBS/IN.(MIN) FLOW RATE 70 GPM/SQ.FT. 3. WHERE ENDS OF GEOTEXTILE FABRIC COME TOGETHER THEYSHALL BE OVERLAPPED, FOLDED, AND SECURED TO PREVENT SEDIMENT BYPASS. 4. SILT FENCE SHALL BE INSPECTED BEFOREAND AFTER EACH RAIN EVENTAND MAINTAINED WHEN BULGES OCCUR OR WHEN SEDIMENT ACCUMULATION REACHES 50% OF THE FABRIC HEIGHT. PT-4 v N R C S TO THE BEST OF MY KNOWLEDGE, JUDGMENT, 7�rc. AND BELIEF THESE PLANS MEET APPLICABLE OURCE REGU ATIONSRDS AND LOCAL AND STATE lei.' J INSTITUTE m O U m Z N y g m O O U Sheet 711