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HomeMy WebLinkAbout20200558 Ver 1_Design_2-12-2020-finalstamped_20200424HENDERSON COUNTY SOIL & WATER CONSERVATION DISTRICT N.C. COMMUNITY CONSERVATION ASSISTANCE PROGRAM yr � �Otl X r k STREAMBANK PROTECTION & STABILIZATION DAN TRUBEY N INLE UP' CI,IEN'j HENDERSON COUNTY, NORTH CAROLINA COUNTY, 't _.- �� w CONTENTS: 1. Title Sheet & Location Ma 2. Existing Grade 3. Proposed Grade r 4. Planting Recommendations 5. =F Erosion Control 6. Bank Stabilization •a SEAL 029344 = TNG r- rG tljlll\\ • -. Tom. - - �-.._. .. ... -.--.. .' . -. �.+� SITE LOCATION MAP SCALE: NOT TO SCALE APPROVED BY: DATE: PG 1 FLOW UNI' TRIE Major Contour (2.5') Minor Contour (0.5') S01L & WATER HENDERSON COUNTY SOIL AND WATER CONSERVATION DISTRICT • • e 61 TRIPLE SPRINGS ROAD, HENDERSONVILLE, NC 28792 (828) 697-4949 DAN TRUBEY CCAP - STREAMBANK RESTORATION 35.352606',-82.523279' HENDERSONVILLE, NC HENDERSON PLAN COUNTY e 029344 - K. GO' PROJECT Don Trubey SCALE: 1 INCH - 20 FEET DRAM BY: Belay K Gerwiq DATE: 2/12/2020 CHECKED BY: DATE: SHEET NO. 2 OF 6 FILENAME: Trubey—Design—lo-2-12-2020.dwq EXISTING GRADE FLOODPLAIP BENCH Minor Contour (U.S ) Cut/Fill Name Summary Cut Factor Volume -Final 1.000 Totals OIL �c WATER HENDERSON COUNTY SOIL AND WATER CONSERVATION DISTRICT • • e 61 TRIPLE SPRINGS ROAD, HENDERSONVILLE, NC 28792 (828) 697-4949 Fill Factor 2d Area 1.000 18149.64 Sq. Ft. 18149.64 Sq. Ft. DAN TRUBEY CCAP — STREAMBANK RESTORATION PLAN 35.352606',—82.523279' HENDERSONVILLE, NC HENDERSON COUNTY Cut 112.01 Cu. Yd. Fill 3.85 Cu. Yd. orston -eek lit l� AL 029344 = Net 108.15 Cu. Yd.<Cut> 112.01 Cu. Yd. 3.85 Cu. Yd. 108.15 Cu. Yd.<Cut> REVISIONS [NO. BY BAti DO"11aN PROJECT: Dan Trubey SCALE! 1 INCH - 20 FEET DRANK BY: Belay K Gerwiq DATE: 2/12/2020 CHECKED BY: DATE! SHEET NO. 3 OF 6 FILENAME: Trubey_DmIgn_1a_2-12-2020.dwq PROPOSED GRADE TREES (<15FT HIGH) SHRUBS (3-6FT Hlr_ul 20 FT WHERE FULL BENCH IS DEVELOPED LIVESTAKES WHERE NARROW OR NO BENCH IS DEVELOPED Recommended Native Plant Species For Riparian Areas Permanent Seeding: Fescue Mix: 80-120 Ibs/acre Rye Mix (annual & perennial): 20-30 Ibs/acre Lime & Fertilizer* Lime: 2,000 Ibs/acre (45 Ibs/1000 sgft) of finely ground, dolomitic limestone Fertilizer: 700 Ibs/acre (16 Ibs/1000 sqft) of 10-10-10 or equivalent Mulching All excavated areas, including flood bench 100% biodegradable erosion control blanket gram coir matting or equivalent). Blankets manufacturer's specifications. All soil prep of erosion control matting. and graded slopes, shall be mulched with an (North American Green SC-150BN or 770 shall be anchored in accordance with work should be completed prior to installation All other disturbed areas should be mulched with dry, unchopped, unweathered small grain straw or hay free of seeds of competing plants. Spread at the rate of 1 —2 tons per acre depending upon the season. Evenly spread mulch over the area by hand or mechanical equipment. Apply mulch uniformly so that 25% of the ground surface is visible. Erosion control blanket or matting can be used to further stabilize these areas. Around the bridge bases and below swing, a low growing sedge and/or grasses are recommended. No woody vegetation should be planted in these areas. sedges are Pennsylvania sedge and Plantain -leaved sedge. Sedges are best planted using plugs. Plant as recommended by nursery. oFr--3S/0 % .a SEAL fir; 1 _ 029344 _ IN -4� �IKZ0 2 IZ" Small Trees/Shrubs Buttonbush Red Chokeberry Silky Willow American Hazelnut Mountain Winterberry Maleberry Wild Azalea Meadowsweet Yellowroot Ferns Tag Alder Swamp Azalea Silky Dogwood Witch -hazel Wildflowers Ninebark Swamp Rose Withe-rod Spicebush Southern Arrowwood Recommended All livestakes shall be planted at maximum spacing of 2' x 2' in alternating rows. Livestakes shall be installed along edge of stream on flood bench. Where not bench is present, livestakes should be installed within 2' above water edge. A minimum of three (3) varieties from livestakes from list above shall be planted. The different varieties shall be randomly mixed throughout the area. On the banks, container trees and shrubs should be planted based on recommended spacing based on plant type. Plantings need to be sufficient to provide a dense root system for all areas exposed to storm flows. *Due to location of power lines, tree heights must be restricted in some locations. *List above is not exhaustive. Any native species can be used if meets the criteria for being used under powerlines and within riparian areas. HENDERSON COUNTY SOIL AND WATER CONSERVATION DISTRICT A. 1.1 •'1l,0;4 61 TRIPLE SPRINGS ROAD, HENDERSONVILLE, NC 28792 (828) 697-4949 DAN TRUBEY CCAP - STREAMBANK RESTORATION 35.352606',-82.523279• HENDERSONVILLE, NC HENDERSON PLAN COUNTY PROJECT Don Trubey SCALE NOT TO SCALE DRAM BY: Betsy K Gerrig DATE: 2/12/2020 CHECKED BY: DATE, SHEET NO. 4 OF 6 FILENAME: Tmbey_Deeign_1o_2-12-2020&g PLANTING RECOM. TEMPORARY SILT FENCE DETAILS Silt Fence should be installed as necessary along construction entrance, around stock piles, and down —slope of spoil deposition areas until vegetation is established. If eminent weather is expected or if construction activities will be suspended for more than 2 days, all excavated areas should be stabilized at the tow of slope with silt fence or straw bales. Slopes and excavations should be stabilized as soon as possible under normal circumstances. 6' MAX. WOVEN FILTER FABRIC POST _z rFITELFABRIC (18" Above grade min) R LOW SLOPE a ANCHOR SKIRT; EXCAVATE TRENCH AND COMPACT BACKFILL Not to scale. General Silt Fence Notes: Woven filter fabric be used where silt fence is to remain for a period of more than 30 days. : �oF . 10y��� Posts shall extend past tops of fabric. Posts can be wood or steel. Turn silt fence up slope at ends. — .a SEAL T. Drainage area can not be greater than 1 /4 acre per 100 ft of fence. = 029344 Do not install silt fence across streams, ditches, waterways or other areas of concentrated flow. '%mF `�'�ciNE`�`�'����` s l 1KI 1111E�� Maintenance Notes: — Filter barriers shall be inspected by the financially responsible party or his agent immediately after each rainfall and at least daily during prolonged rainfall. Any repairs needed shall be made immediately. — Should the fabric decompose or become ineffective prior to the end of the expected usable life and the barrier still is necessary, the fabric shall be replaced promptly. — Sediment deposits should be removed when deposits reach approx. half the height of the barrier. Any sediment deposits remaining in place after the silt fence is removed shall be dressed to conform to the existing grade, prepared and seeded. Cut Material: Approximately 100 cubic yards of soil will be removed to create a floodplain bench and stable slopes. The material can be spread on -site or exported offsite. Any material applied onsite must be above any cut slopes and must be stabilized as a disturbed area. If cut material is temporarily stockpiled on -site, a silt fence must be installed to prevent material from washing into stream. See details above. All disturbed areas will be seeded and covered with biodegradable matting as soon as possible. Additionally, various types of woody vegetation will also be installed. Silt fence will be installed around soil stockpiles. As soil is spread up gradient, the areas will be reseeded and covered with straw. All disturbed areas will be stabilized as soon as possible. Equipment will be kept out of the stream and will not cross the stream to access the work areas. Equipment will be inspected for leaks and maintained daily. Refueling will not occur within the work area. OIL &WATER HENDERSON COUNTY SOIL AND WATER CONSERVATION DISTRICT •i e 1.1 ; W111 I [Ole 0 e 61 TRIPLE SPRINGS ROAD, HENDERSONVILLE, NC 28792 (828) 697-4949 DAN TRUBEY CCAP - STREAMBANK RESTORATION PLAN 35.352606%-82.523279' HENDERSONVILLE, NC HENDERSON COUNTY REVISIONS N0. BY DAII DE 1MMN 2 3 4 5 PROJECT: Don Trubsy SCALE: NOT TO SCALE DRAWN BY: Betsy K Gerwlq DATE: 2/12/2020 CHECKED BY: DATE: SHEET NO. 5 OF 6 FlLENAME: Tmbey_DWgn_1a_2-12-2020 dwg EROSION CONTROL. Material Specification Erosion Control blanket shall be a machine —produced 100% biodegradable mat with an agricultural straw fiber matrix. The blanket shall be of consistent thickness with the straw evenly distributed over the entire area of the mat. The blanket shall be covered on the top and bottom sides with 100% biodegradable woven natural fiber netting. The netting shall consist of machine directional strands formed from two intertwined yarns with cross directional strands interwoven through the twisted machine strands (commonly referred to as a Leno weave) to form an approximate 0.50 inch x 1.00 inch (1.27 x 2.54 cm) mesh. The blanket shall be sewn on 1.50 inch (3.81 cm) centers (50 stitches per roll width) with biodegradable thread. The blanket shall be manufactured with a colored line or thread stitched along both outer edges (approximately 2-5 inches (5-12.5 cm) from the edge) to ensure proper material overlapping. The straw erosion control blanket shall be S150 BN as manufactured by North American Green, 700 gram coir matting, or equivalent. The blanket shall have the following properties: Material Content Matrix 100% Straw Fiber (0.50 Ibs/yd2) (0.27 kg/m2); Netting on both sides, Leno woven 100% biodegradable organic jute fiber (9.30 Ibs/1 ,000 ft2 [4.50 kg/100 m2] approximate weight); Thread biodegradable Physical Specifications (per roll) Width 6.67 ft Length 108.00 ft Weight 53.50 Ibs Area 80.00 yd2 Stitch Spacing 1.50 inches A 700 gram coir matting that is 100% biodegradable is acceptable with proper seeding and mulch underneath matting. �►C�IL & WATER HENDERSON COUNTY SOIL AND WATER fto CONSERVATION DISTRICT • • 61 TRIPLE SPRINGS ROAD, HENDERSONVILLE, NC 28792 (828) 697-4949 12"(30ell] ) 211_511 r ; (5-12.5cm) l/11 1. (15cm) I Ed 11 - I=1 5 01 .4 SEAL ' 029344 •� l� %c°j. IN �N��• s K. Gt:� . ••� • .�• � /��ll111111� �t;� �• r [27 •�-�Z-2� e4B: .L1 I I I I I I I I Ii_�_�0Y=� ✓.` ✓ DEL B i I LE Drawing Not To Scale NORTH AMERICAN GREEN 5401 St. Wendel - Cynthiana Rd. PH: 800-722-2040 Poseyville, IN 47633 nii1N.nagreen.com DAN TRUBEY CCAP — STREAMBANK RESTORATION 35.352606%—82.523279' HENDERSONVILLE, NC HENDERSON Disclaimer: The information presented herein is general design information only. For specific applications, consult an independent professional for further design guidance. PLAN COUNTY IIII�Illllll■_ Drawn on: 5-4-17 SHORELINE/ STREAMBANK INSTALLATION DETAIL 1. For easier installation, lower water level from Level A to Level B before installation. 2. Prepare soil before installing rolled erosion control products (RECPs), including any necessary application of lime, fertilizer, and seed. 3. Begin at the top of the shoreline by anchoring the RECPs in a 6"(15cm) deep X 6"(15cm) wide trench with ' approximately 12"(30cn1) of RECPs extended beyond the up -slope portion of the trench. Anchor the RECPs with a row of staples/stakes approximately 12" (30cm) apart in the bottom of the trench. Backfill and compact the trench after stapling. Apply seed to the compacted soil and fold the remaining 12"(30cm) portion of RECPs back over the seed and compacted soil. Secure RECPs over compacted soil with a row of staples/stakes spaced approximately 12"(30cm) apart across the width of the RECPs. 4. Roll RECPs either (A) down the shoreline for long banks (top to bottom) or (B) horizontally across the shoreline slope. RECPs will unroll with appropriate side against the soil surface. All RECPs must be securely fastened to soil surface by placing staples/stakes in appropriate locations as shown in the staple pattern guide. 5. The edges of all horizontal and vertical seams must be stapled with approximately 2" - 5" (5-12.5cm) overlap. Note: `In streambank applications seam overlaps should be shingled in the predominant flow direction. 6. The edges of the RECPs at or below normal water level must be anchored by placing the RECP's in a 12"(30cm) deep X 6"(15cm) wide anchor trench. Anchor the RECPs with a row of staples/stakes spaced approximately 12"(30cm) apart in the trench. Backfill and compact the trench after stapling (stone or soil may be used as backfill). For installation at or below normal water level, use of ShoreMax mat on top of the RECP or geotextile may be recommended. In loose soil conditions, the use of staple or stake lengths greater than 6" may be necessary to properly secure the RECPs. Bottom anchor trench can be eliminated when using ShoreMax mat over RECP along the bottom edge. PROJECT: Dan Trubsy SCALE: NOT TO SCALE DRANN BY: Betsy K Gerwiq DATE: 2/12/2020 CHECKED BY: DATE: SHEET NO. 6 OF 6 nLENAME: Tmbey_De9ign_1s1-12-2020dwq BANK STABILIZATION