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Home My WebLink About13 Erosion Control DetailsD50 7" RIP -RAP 15" THICK MAINTENANCE =Inspect rock chutes after storm events for stone displacement and for erosion at the sides and ends of the apron =Make needed repairs immediately; use appropriate size stone, do not place them above the finished grade. 6" HIGH, 12" GEOTEXTILE FABRIC FILLED WITH MULCH, (FABRiC- NUTEC 3'W FENCE FABRIC OR APPROVED EQUAL.) SPILLWAY 0.5' TO 1' PLAN VIEW DITCH APPLICATION t *1" 1` v 'l ice vi4r W :1 4 e NO. 5 COURSE D50 7 AGGREGATE RIP -RAP MULCH BAG DETAIL NO SCALE ROCK CHECK DAM OUTLET PIPE OR OTHER STRUCTURE DITCH OR BASIN BOTTOM 'yon 2 -3" Lifts of *2 Stone- SPILLWAY CREST PLAN VIEW STRUCTURE APPLICATION ROCK APRON ROCK CHECK DAM NO SCALE MAINTENANCE =Inspect check dams and the channel after each storm event and repair any damage immediately =If significant erosion occurs between dams, install a riprap liner in that portion of the channel *Remove sediment accumulated behind each dam as needed to maintain channel capacity, to allow drainage through the dam, and to prevent large flows from displacing sediment. =Add rock to the dams as needed to maintain height and cross section. =When the dams are no longer needed, remove the rock and stabilize channel, using an erosion -re- sistant lining if necessary. ROCK WASHED OUT- results in channel cutting; repair the washes and replace the rock TEMPORARY GRAVEL CONSTRUCTION ENTRANCEIEXiT NO SCALE MAINTENANCE =Inspect entrance pad and sediment disposal area weekly and after storm events or heavy use. =Reshape pad as needed for drainage and runoff control. =Topdress with clean stone as needed. =Immediately remove mud and sediment tracked or washed onto public roads by brushing or sweeping. Flushing should only be used in the water is conveyed into o sediment trap of basin =Repair any broken road pavement immediately. SILT FENCE GEOTEXTIL GROUND LINE 1 "X4" WOOD CROSS BRACING EXISTING GROUND INLET TEMPORARY SILT FENCE DROP INLET PROTECTION MAINTENANCE NO SCALE =Inspect the fabric barrier after storm events, and make needed repairs immediately. =Remove sediment from the pool area to provide storage for the next storm. Avoid damaging or undercutting the fabric during sediment removal. When the contributing drainage area has been stabilized, remove and properly dispose of all con- struction material and sediment, grade the area to the elevation of the top of the inlet, then stabilize. SLOPE MOUND EARTH OVER TOE OF GEOTEXTILE ELEVATION PLAN EROSION CONTROL AT BASE OF SLOPE NO SCALE FLOW BACKFILL a ""fi" TRENCH FILTER FABRIC EXTENDS INTO TRENCH SLOPE CHECK FENCE_�� POSTS SILT FENCE DETAIL NO SCALE SILT FENCE 20 -50 ft. 1.5 ft. (max) 1111 MI 1110 1111111111111111111 1111 ■I ■■■■■■■■■■a ■■i i■■■■■■■■■■ ■■■■■■■■■■i 1 ■■■■■■■■P 1 ■I 11111111111111111111 I■■■■ ■I i■■■■■■■■■■ ■I I■■■■■■■ 111 ■I 111111111111111111 111111111111111111 WHEN JOINING TWO OR MORE SILT FENCES WRAP THE TWO END POSTS TOGETHER AT LEAST ONE FULL TURN, JOINING FENCES MAINTENANCE =Inspect the silt fence periodically and after each storm event. =If fence fabric tears, starts to decompose, or in any way becomes ineffective, portion immediately. =Remove deposited sediment when it reaches half the height of the fence at its causing the fabric to buldge. =Take care to avoid undermining the fence during clean out. =After the contributing drainage area has been stabilized, remove the fence and bring the disturbed area to grade, stabilize, o■ STREET \--INLET NOTE: SEE SILT FENCE DETAIL FOR FENCE INSTALLATION SILT FENCE BEHIND CURB NO SCALE TOE OF SLOPE replace the affected lowest point or is sediment deposits, A See Sheet 14 B Annual Ryegrass 40 /bs /acre plus 40 11& toll Feuer plus 2 ti straw C Spring Dots 100 lbs ✓acre D -Wheat or Rye /50 lbs./acre. E Annual Ryegrass 40 Ibs /acre. lb./1000 sq. ftJ F -Sod G Straw Mulch 2 tons /acre. 1/1/1 Irrigation needed during Ju�Ju/y.ond /osr September. a. Irrigation needed for 2 to 3 weeks after applying sod. Lime and fertilize to sly specific sails tests or a fertilizer at a rate of !0010 lbs. per acre or /2 -12-12 or equivalent. All wales shall be seeded with 2 Ib. MOW bluegrass and 2 lbs. Perennial Derby rye.or equivalent per 1000 square feet. mulch with one bale of straw per /000 square feet. Fart! 112e /be with 5 &L a' 20-53 per 1000 square feet. SEEDING CHART NO SCALE Erosion control blanket shall be North American Green S150 or equivalent. Riprop shall have a D50, by weigh, of 7 Inches. It shall be angular or sub angular In shape and place to o minimum thickness of 15 Inches, unless otherwise specified. Protect trees during construction. Do not fill over roots. Contact developer /engineer before cutting any trees over 6 Inches In diameter. MAINTENANCE *Inspect periodically, especially after storm events, until the stand is successfully established. (Characteristics of a successful stand include: vigorous dark green or bluish -green seedlings; uni- form density with nurse plants, legumes, and grasses well inter mixed; green leaves; and the per- ennials remaining green throughout the summer, at least at the plant base.) =Plan to add fertilizer the following growing season according to soil test recommendations. =Repair damaged, bare, or sparse areas by filling any gullies, re- fertilizing, over- or re- seeding, and mulching. =if plant cover is sparse or patchy, review the plant materials chosen, soil fertility, moisture condi- tion, and mulching; then repair the affected area either by over seeding or by re- seeding and mulching after re- preparing the seedbed. =If vegetation fails to grow, consider soil testing to determine acidity or nutrient deficiency prob- lems. (Contact your SWCD or Cooperative Extension office for assistance.) =If additional fertilization is needed to get a satisfactory stand, do so according th soil test recom- mendations. SOiL EROSION AND SEDIMENT CONTROL SPECIFICATIONS Refef to the Indiana Handbook for Erosion Control in Developing Areas and the Urban Development Planning Guide for additional Information, construction specifications and maintenance recommendations. The Hamilton County Soil and Water Conservation District and datum' Resources Conservation Service, in Noblesville, can be contacted at (317)773 -2181. Reference seeding chart for more information Where vegetative stabilization techniques may cause structural instability or otherwise unobtainable, alternative stabilization techniques must be employed. Project No: 03146 Sheet No: STAPLE PATTERN GUIDE PLES PER SO YD PLES PER SO YD 1.2 STAPLES PER SO YD 3.8 STAPLES PER SO YD SHORELINE INSTALLATION CHANNEL INSTALLATION NOTE: HORIZONTAL STAPLE SPACING SHOULD BE ALTERED IF NECESSARY TO ALLOW STAPLES TO SECURE THE CRITICAL POINTS ALONG THE CHANNEL SURFACE. REFER TO GENERAL STAPLE PATTERN GUIDE FOR CORRECT STAPLE RECOMMENDATIONS FOR CHANNELS. 1.75 STAPLES PER SO YD v LEVEL B NOTE: IN LOOSE SOIL CONDITIONS. THE USE OF LONGER STAPLES OR STAKES MAY BE NECESSARY TO PROPERLY ANCHOR THE BLANKETS. 6 REFER TO GENERAL STAPLE PATTERN GUIDE FOR SHORE LINE INSTALLATIONS. 1. FOR EASIER INSTALLATION. LOWER WATER FROM LEVEL A TO LEVEL B BEFORE INSTALLATION. 2. PREPARE SOIL BEFORE INSTALLING BLANKETS, INCLUDING APPLICATION OF LIME. FERTILIZER. AND SEED. 3. THE TOP EDGE OF THE BLANKET MUST BE ANCHORED IN A 6" DEEP X 6" WIDE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING. 4. PLACE BLANKETS END OVER END WITH A 3" TO 4" OVERLAP. STAPLE THROUGH BOTH BLANKETS OF THE OVERLAPPED AREA. APPROXIMATELY 6" APART. ADJACENT SEAMS WHERE TWO BLANKETS SIDE BY SIDE ARE JOINED MUST CONSIST OF A 4" TO 6" OVERLAP. 5. THE EDGE OF THE BLANKET THAT FALLS BELOW NORMAL WATER LEVEL MUST BE ANCHORED IN A 12" DEEP X 6" WIDE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING. (STONE MAY BE SUBSTITUTED FOR SOIL BACKFILL.) 6. FOR LONG BANKS. (TOP TO BOTTOM) USE VERTICAL INSTALLATION. MAINTENANCE *During vegetative establishment. inspect after storm events for any erosion below the blanket. *If any area shows erosion, pull back that portion of the blanket covering it. add soil. re -seed the area. and re -lay and staple the blanket. *After vegetative establishment. check the treated area periodically. CRITICAL POINTS A. OVERLAPS AND SEAMS B. PROJECTED WATER LINE C. CHANNEL BOTTOM /SIDE SLOPE VERTICES r •1t• o e 2,4 T1! POLYFELT TS700 FILTER FABRIC (OR EQUAL) RIP —RAP /FILTER CLOTH DETAIL NO SCALE :-..vt I :1l :.:r fe stir,. 1 '1., r 3 J r- 4 I i i 5 1�... 12" MIN. THICKNESS OF RiP -RAP (STONE SIZE 6" OR LARGER) 1. PREPARE SOIL BEFORE INSTALLING BLANKETS. INCLUDING APPLICATION OF LIME FERTILIZER. AND SEED. 2. BEGIN AT THE TOP OF THE CHANNEL BY ANCHORING THE BLANKET IN A 6" DEEP X 6" WIDE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING. 3. ROLL CENTER BLANKET IN DIRECTION OF WATER FLOW ON BOTTOM OF CHAN 4. PLACE BLANKETS END OVER END (SHINGLE STYLE) WITH A 6" OVERLAP. USE A DOUBLE ROW OF' STAGGERED STAPLES 4" APART TO SECURE BLANKETS. 5. FULL LENGTH EDGE OF BLANKETS AT TOP OF SIDE SLOPES MUST BE ANCHORED IN 6" DEEP X 6" WIDE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING. 6. BLANKETS ON SIDE SLOPES MUST BE OVERLAPPED 4" OVER THE CENTER BLANKET AND STAPLED (2" FOR C350 MATTING). 7. IN HIGH FLOW CHANNEL APPLICATIONS. A STAPLE CHECK SLOT IS RECOMMENDED AT 30 TO 40 FOOT INTERVALS. USE A ROW OF STAPLES 4" APART OVER ENTIRE WIDTH OF THE CHANNEL. PLACE A SECOND ROW 4" BELOW THE FIRST ROW IN A STAGGERED PATTERN. 8. THE TERMINAL END OF THE BLANKETS MUST BE ANCHORED IN A 6" DEEP X 6" WIDE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING. MAINTENANCE *During vegetative establishment. inspect after storm events for any erosion below the blanket. *If any area shows erosion. pull back that portion of the blanket oovering it. add soil. re -seed the area, and re -lay and staple the blanket. *After vegetative establishment. check the treated area periodically. GROUND SURFACE i IP—MP SCHEDULE PIPE SYS 12 2 15 3 18 4 21 5 24 6 27 7 30 8.5 33 10 36 11.5 42 15 48 19 _J911...._ E& JIs/AG M..�. Jy& Jul._. 5e Deg 1 A a/////1////ft--a/114 8 --1 F� /I AREA REQUIRING PERMANENT STABILIZATION TIME FRAME TO APPLY EROSION CONTROLS Any areas that will lie dormant for one year Within seven days of the most recent or more. disturbance. Any areas within 50 feet of a stream and at Within two days of reaching final grade. final grade. Any other areas at final grade. Within seven days of reaching final grade within that area. AREA REQUIRING TEMPORARY STABILIZATION TIME FRAME TO APPLY EROSION CONTROLS Any disturbed areas within 50 feet of a Within two days of the most recent stream and not at final grade. disturbance if the area will reamain idle for more than 15 days. For ail construction activities, any Within seven days of the most recent disturbed areas that will be dormant for disturbance within the area. more than 15 days but less than one year, and not within 50 feet of a stream. Disturbed areas that will be idle over Prior to the onset of winter weather. winter ...1031461con lans103146ed dgn 5/27/2004 3: 10: 28 PM