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Home My WebLink AboutC201 Stormwater Pollution PreventionLOAD SLOPE MAX. DISTANCE ABOVE FENCE LESS THAN 2% 100 FT. 2 TO 5% 75 FT. 5 TO 10% 50 FT. 10 TO 20% 25 FT. MORE THAN 20% 15 FT. B C C C B C A B B 10 10 9 POST 2"X2" WOOD OR 1.33 LBS /FOOT STEEL 6' MAX. SPACING 8 "X4" TRENCH TO BE BACKFILLED AND COMPACTED FINISH GRADE FLOW UNDISTURBED I GROUND 8 8 N Z 2 "x2" O} -2=X4 WOOD FRAME DROP INLET WITH GRATE WOVEN FILTER FABRIC SILT FENCE MATERIAL COVER I 1= z 36" MAX. (TYP. ATTACH THE WOVEN WIRE FENCE TO EACH POST WITH THREE WIRE TIES OR OTHER FASTENERS WITHOUT WIRE SUPPORT CROSS BRACE II I 1"x2" or 1"x3" ND 7 WOVEN WIRE FENCE WITH SILT FENCE MATERIAL COVER 4 "x8" TRENCH r EXTEND WIRE FENCE A EXTEND MIN. OF 8" INTO GROUND LTIF MAINTENANCE. INSPECT DAILY. 2 -WOOD POST /STAKES WRAPPED WITH SILT FENCE AND ROTATED AT LEAST ONE FULL TURN TO SECURE SILT FENCE END IN PLACE SILT FENCE TO JOIN TO ENDS OF TWO FENCES. POST POSTS: 2 X 4 WOODEN STAKE FENCE: WOVEN WIRE, 14 -1/2 GA., 6" MAX. MESH OPENING FABRIC: IN ACCORDANCE WITH ASTM D 6461 LATEST EDITION. I NSTALLATION 1. DIG AN EIGHT -INCH DEEP, FOUR -INCH WIDE TRENCH AROUND THE PERIMETER OF THE INLET. 2. IF USING PRE ASSEMBLED GEOTEXTILE FABRIC AND POSTS, DRIVE THE POSTS INTO THE SOIL TIGHTLY STRETCHING THE GEOTEXTILE FABRIC BETWEEN POSTS AS EACH IS DRIVEN. (POSTS MUST BE PLACED ON THE INLET SIDE OF THE ANCHOR TRENCH WITH THE GEOTEXTILE FABRIC ON THE SIDE OF THE TRENCH FARTHEST FROM THE INLET.) NOTE: IF ASSEMBLING THE GEOTEXTILE FABRIC AND POSTS ON -SITE, DRIVE THE POSTS INTO THE SOIL AND THEN SECURE THE GEOTEXTILE FABRIC TO THE POSTS BY PLACING A PIECE OF LATHE OVER THE FABRIC AND FASTENING IT TO THE POST (STRETCHING THE FABRIC BETWEEN POSTS AS TT IS FASTENED). 3. USE THE WRAP JOIN METHOD WHEN JOINING POSTS. 4. PLACE THE BOTTOM 12 INCHES OF GEOTEXTILE FABRIC INTO THE EIGHT -INCH DEEP TRENCH, LAYING THE REMAINING FOUR INCHES IN THE BOTTOM OF THE TRENCH AND EXTENDING AWAY FROM THE INLET. 5. BACKFILL THE TRENCH WITH SOIL MATERIAL AND COMPACT IT IN PLACE. 6. BRACE THE POSTS BY NAILING BRACES INTO EACH CORNER POST OR UTILIZE RIGID PANELS TO SUPPORT FABRIC. NOTE: IN SITUATIONS WHERE STORM WATER MAY BYPASS THE STRUCTURE, EITHER: SET THE TOP OF THE GEOTEXTILE FABRIC FILTER AT LEAST SIX INCHES LOWER THAN THE GROUND ELEVATION ON THE DOWN -SLOPE SIDE OF THE STORM DRAIN INLET, BUILD A TEMPORARY DIKE, COMPACTED TO SIX INCHES HIGHER THAN THE FABRIC, ON THE DOWN -SLOPE SIDE OF THE STORM DRAIN INLET, AND /OR USE IN CONJUNCTION WITH EXCAVATED DROP INLET PROTECTION. REFERENCED IN CHAPTER 7 PAGE 153 -157 IN THE INDIANA STORM WATER QUALITY MANUAL. INSPECT GEOTEXTILE FABRIC AND MAKE NEEDED REPAIRS IMMEDIATELY. REMOVE SEDIMENT FROM POOL AREA TO PROVIDE STORAGE FOR THE NEXT STORM EVENT. AVOID DAMAGING OR UNDERCUTTING FABRIC DURING SEDIMENT REMOVAL WHEN CONTRIBUTING DRAINAGE AREA HAS BEEN STABILIZED, REMOVE SEDIMENT, PROPERLY DISPOSE OF ALL CONSTRUCTION MATERIAL, GRADE AREA TO THE ELEVATION OF THE STORM DRAIN INLET TOP, THEN STABILIZE IMMEDIATELY. SILT FENCE INLET PROTECTION FOR NON PAVED AREAS GEOTEXTILE FABRIC LAID ON DOWN SLOPE SIDE AND BOTTOM OF TRENCH EMBEDDED SILT FENCE MATERIAL MIN. 8" INTO GROUND W/ 4" LAID ALONG BOTTOM OF TRENCH. SOIL SLICING IN ACCORDANCE WITH ASTM D 6462 8.2.2 IS ALSO ACCEPTABLE. REFERENCE IN CHAPTER 7 PAGES 215 -221 IN THE INDIANA STORM WATER QUALITY MANUAL SEDIMENTATION /SILT FENCE (NO SCALE) 7 2 "x2" or 2 "x4" STAKE GEOTEXTILE FABRIC LAID ON DOWN -SLOPE SIDE AND BOTTOM OF TRENCH 6 SILT FENCE MATERIAL TO BE FASTENED SECURELY TO WOVEN WIRE FENCE WITH THREE TIES SPACED AT 3" ON CENTER SECURELY FASTEN OVERLAPPING ENDS OF SILT FENCE MATERIAL TO ADJACENT STAKES WITH THREE WIRE TIES OR OTHER FASTENERS (NO SCALE) MAXIMUM LOAD SLOPE AND DISTANCE FOR WHICH A SILT FENCE IS APPLICABLE POSTS: STEEL T OR U TYPE, OR 2 "X2" HARD WOOD POST FENCE: WOVEN WIRE, 14 -1/2 GA., 6" MAX. MESH OPENING FABRIC: IN ACCORDANCE WITH ASTM D 6461 LATEST EDITION. UNDISTURBED GROUND POST 2 "X2" WOOD OR 1.33 LBS /FOOT SILEL 8 MAX. SPACING WIRE FENCE 14 GAUGE (MIN) -6" MESH REO'D. IN SWALES OR AR OF CONCENTRATED FLOW FINISH FLOW NONWOVEN FILTER FABRIC SECURE TO POSTS WITH 2" LATH 8"X4" TRENCH TO BE BACKFILLED AND COMPACTED 6 Q 0 M 00 I L I= VIII; WITH WIRE SUPPORT GEOTEXTILE FABRIC LAID ON DOWN SLOPE SIDE AND BOTTOM OF TRENCH 5 EMBEDDED SILT FENCE MATERIAL MIN. 8" INTO GROUND W/ 4" LAID ALONG BOTTOM OF TRENCH. SOIL SLICING IN ACCORDANCE WITH ASTM D 6462 8.2.2 IS ALSO ACCEPTABLE. INSTALLATION PREFABRICATED SILT FENCE 1. LAY OUT THE LOCATION OF THE FENCE SO THAT IT IS PARALLEL TO THE CONTOUR OF THE SLOPE AND AT LEAST 10 FEET BEYOND THE TOE OF THE SLOPE TO PROVIDE A SEDIMENT STORAGE AREA. TURN THE ENDS OF THE FENCE UP SLOPE SUCH THAT THE POINT OF CONTACT BETWEEN THE GROUND AND THE BOTTOM OF THE FENCE END TERMINATES AT A HIGHER ELEVATION THAN THE TOP OF THE FENCE AT ITS LOWEST POINT. 2. EXCAVATE AN EIGHT -INCH DEEP BY FOUR -INCH WIDE TRENCH ALONG THE ENTIRE LENGTH OF THE FENCE LINE. INSTALLATION BY PLOWING IS ALSO ACCEPTABLE. 3. INSTALL THE SILT FENCE WITH THE FILTER FABRIC LOCATED ON THE UP -SLOPE SIDE OF THE EXCAVATED TRENCH AND THE SUPPORT POSTS ON THE DOWN -SLOPE SIDE OF THE TRENCH. 4. DRIVE THE SUPPORT POSTS AT LEAST 18 INCHES INTO THE GROUND, TIGHTLY STRETCHING THE FABRIC BETWEEN THE POSTS AS EACH IS DRIVEN INTO THE SOIL. MINIMUM OF 12 INCHES OF THE FILTER FABRIC SHOULD EXTEND INTO THE TRENCH. 5. LAY THE LOWER FOUR INCHES OF FILTER FABRIC ON THE BOTTOM OF THE TRENCH AND EXTEND IT TOWARD THE UP -SLOPE SIDE OF THE TRENCH. 6. BACKFILL THE TRENCH WITH SOIL MATERIAL AND COMPACT IT IN PLACE. NOTE: IF THE SILT FENCE IS BEING CONSTRUCTED ON -SITE, ATTACH THE FILTER FABRIC TO THE SUPPORT POSTS AND ATTACH WOODEN LATHE TO SECURE THE FABRIC TO THE POSTS. ALLOW FOR AT LEAST 12 INCHES OF FABRIC BELOW GROUND LEVEL COMPLETE THE SILT FENCE INSTALLATION, FOLLOWINGS STEPS 1 THROUGH 6 ABOVE. MAINTENANCE INSPECT WITHIN 24 HOURS OF A RAIN EVENT AND AT LEAST ONCE EVERY SEVEN CALENDAR DAYS. IF FENCE FABRIC TEARS, STARTS TO DECOMPOSE, OR IN ANY WAY BECOMES INEFFECTIVE, REPLACE THE AFFECTED PORTION IMMEDIATELY. NOTE: ALL REPAIRS SHOULD MEET SPECIFICATIONS AS OUTLINED WITHIN THIS MEASURE. REMOVE DEPOSITED SEDIMENT WHEN IT IS CAUSING THE FILTER FABRIC TO BULGE OR WHEN IT REACHES ONE -HALF THE HEIGHT OF THE FENCE AT ITS LOWEST POINT. WHEN CONTRIBUTING DRAINAGE AREA HAS BEEN STABILIZED, REMOVE THE FENCE AND SEDIMENT DEPOSITS, GRADE THE SITE TO BLEND WITH THE SURROUNDING AREA, AND STABILIZE. 5 1 -1 RUNOFF 4 RU COCONUT MAT INLET PROTECTION RUNOFF (FOR INLETS THAT ARE IN LOW POINTS) (NO SCALE) MAINTENANCE: 1. INSPECT WEEKLY AND AFTER EACH STORM EVENT. 2. GRAVEL BAGS ARE HALF FULL WITH ROCK LARGER THAN THE INLET GRATE AND PACKED CLOSE TOGETHER TO ELIMINATE GAPS. 3. IF BAG DETERIORATES OR IS DAMAGED, REBAG OLD BAG WITH CONTENTS INTO A NEW BAG. 4. REMOVE SEDIMENT WHEN HEIGHT REACHES THE TOP OF THE BAG. 5. AFTER DRAINAGE AREA IS STABIUZED, REMOVE BAG AND SEDIMENT, BRINGING DISTURBED AREA TO GRADE AND STABILIZE IT. EROSION CONTROL SEEDING LIMITS EROSION CONTROL SEEDING LIMITS VARIABLE V E :RIDE AS SHOWN Ili 3.1 SLOPE N LANS III —I I P 1 111111 =11 11— II -III_ DRAINAGE SWALE SECTION (NO SCALE) III I I 1 1 11= I i KOIR WATTLE 1 "X1 "X24" HARDWOOD STAKES KOIR WATTLE INLET PROTECTION NOT TO SCALE 1" X 1"X24" HARDWOOD STAKES 3 Place Koir Wattle around drop inlet and curb inlet in such a way that there is no space between the ends of the Koir Wattle. (See Fig 3 and Fig 4 respectively.) Koir Wattle must be secured to the ground using 1" x 1" x 24" hardwood stakes at 2' on center. The top surface of the Koir Wattle must be located above the ponding height. Use multiple tiers if necessary. CONST UC7'I�N I T,ANS GENERAL STAPLE RECOMMENDATIONS 300 275 250 225 200 175 150 125 100 75 50 25 2 4:1 3:1 2:1 1:1 CHANNEL SLOPE GRADIENT LINING ADDITIONAL STAPLES AS REQUIRED CHANNEL LININGS UTILIZE STAPLE PATTERN "C" WITH ADDITIONAL STAPLES ON SIDE SLOPES. 6' 3' A x 3' x x 1 STAPLE PER SQ. YD. x B 1 1/2 STAPLE PER SQ. YD. NOTES: STAPLE PATTERNS APPLY TO ALL NORTH AMERICAN GREEN EROSION CONTROL BLANKETS. STAPLE PATTERNS MAY VARY DEPENDING UPON SOIL TYPE AND AVERAGE ANNUAL RAINFALL. AT SLOPE LENGTHS GREATER THAN 300 FEET OR WHERE DRAINAGE OVER LARGE AREAS IS DIRECTED ONTO THE BLANKETS, STAPLE PATTERN "C" SHOULD BE UTILIZED. CHANNEL LININGS REQUIRED A 2.0' MINIMUM OVERLAP AT LONGITUDINAL JOINTS. SIDESLOPES SHALL REQUIRE A 6" MINIMUM OVERLAP. WHERE OVERLAPS OCCUR, THE UPSTREAM BLANKET SHALL OVERLAP THE DOWNSTREAM. IF OTHER THAN NORTH AMERICAN GREEN EROSION CONTROL BLANKETS ARE INSTALLED FOLLOW THE INSTALLATION DIRECTIONS RECOMMENDED BY THAT PRODUCTS COMPANY. EROSION CONTROL BLANKET STAPLE PATTERN (NO SCALE) 2 STAPLE PER SQ. YD. Contact Person for Erosion Control Sediment Practices T?c W CORPORATION 3841 W. MORRIS STREET INDIANAPOLIS, IN 46241 TELEPHONE: 317-244-7637 CONTACT PERSON.. STEPHEN D. SHEHORN DOUGLAS L. BEAMER —NOTE THIS PLAN INDICATES EROSION CONTROL MEASURES REQUIRED AFTER SOIL STRIPPING AND PAD BUILDING HAS TAKEN PLACE. COORDINATE WITH DEVELOPER FOR MEASURES REQUIRED UNTIL PROPERTY TURNED OVER FOR DEVELOPMENT. COORDINATE WITH SOIL CONSERVATION DISTRICT REPRESENTATIVE FOR ANY OTHER MEASURES REQUIRED DUE TO SITE CONDITIONS. WARNING— THIS PLAN TO BE USED FOR EROSION CONTROL PURPOSES ONLY. ADDITIONAL EROSION CONTROL MEASURES MAY BE REQUIRED IN THE FIELD BY THE INSPECTOR. 147'E1 12/1:/200 \\\N N\\`' 3841 W. Moms St inpIs.. IN 46241 p 317 244 7 637 f. 317 244 6348 www.tw- corD.ccn 00 O VD O Tr be U :=1 o u O PI In CI d In °�a Zc W 0 0 0 ti Qt SHEET NO. PROJECT NO. r"• 00 VD 0 Nt I I I N 00 Nr 00 0 M 00 M t.SHIE4 S ERA tpE1 W09 -0548 'O. JAMES E. SHIELDS JR. P.E. 10201333 z nn C201 rn 0 0 N 00 N