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Home My WebLink AboutC104 STORMWATER POLLUTION PREVENTION PLAN DETAILSWOOD OR METAL STAKES TO SECURE THE STRAW BALES (TWO PER BALE) 10 MIL. PLASTIC LINING STRAW BALE (TYP) SECTION LINE STRAW BALE (TYP) BINDING WIRE WOOD OR METAL STAKES (TYP) - 2 PER BALENATIVE MATERIAL (OPTIONAL) POLYETHYLENE LINING 10 MIL. EXTENDING OVER BALES (NO SCALE)TYPE "ABOVE GRADE W/ STRAW BALES" WOOD OR METAL STAKES TO SECURE THE STRAW BALES (TWO PER BALE) POLYETHYLENE LINING 10 MIL. EXTENDING OVER BALES METAL PINS OR STAPLES TO SECURE THE POLYETHYLENE LINING TO THE STRAW BALES METAL PINS OR STAPLES TO SECURE THE POLYETHYLENE LINING TO THE STRAW BALES CONCRETE WASHOUT WOOD POST 3"x3"x8' BLACK LETTER 6" HEIGHT 3/8" TREATED PLYWOOD 48"x24" PAINTED WHITE 0.5" LAG SCREWS INSTALLATION 1.UTILIZE AND FOLLOW THE DESIGN IN THE STORM WATER POLLUTION PREVENTION PLAN TO INSTALL THE SYSTEM. 2.DEPENDENT UPON THE TYPE OF SYSTEM, EITHER EXCAVATE THE PIT OR INSTALL THE CONTAINMENT SYSTEM. 3.A BASE SHALL BE CONSTRUCTED AND PREPARED THAT IS FREE OF ROCKS AND OTHER DEBRIS THAT MAY CAUSE TEARS OR PUNCTURES IN THE POLYETHYLENE LINING. 4.INSTALL THE POLYETHYLENE LINING. FOR EXCAVATED SYSTEMS, THE LINING SHOULD EXTEND OVER THE ENTIRE EXCAVATION. THE LINING FOR BERMED SYSTEMS SHOULD BE INSTALLED OVER THE POOLING AREA WITH ENOUGH MATERIAL TO EXTEND THE LINING OVER THE BERM OR CONTAINMENT SYSTEM. THE LINING SHOULD BE SECURED WITH PINS, STAPLES, OR OTHER FASTENERS. 5.PLACE FLAGS, SAFETY FENCING, OR EQUIVALENT TO PROVIDE A BARRIER TO CONSTRUCTION EQUIPMENT AND OTHER TRAFFIC. 6.PLACE A NON-COLLAPSING, NON-WATER HOLDING COVER OVER THE WASHOUT FACILITY PRIOR TO A PREDICTED RAINFALL EVENT TO PREVENT ACCUMULATION OF WATER AND POSSIBLE OVERFLOW OF THE SYSTEM (OPTIONAL). 7.INSTALL SIGNAGE THAT IDENTIFIES CONCRETE WASHOUT AREAS. 8.POST SIGNS DIRECTING CONTRACTORS AND SUPPLIERS TO DESIGNATED LOCATIONS. 9.WHERE NECESSARY, PROVIDE STABLE INGRESS AND EGRESS APPROACH PAD FOR CONCRETE WASHOUT SYSTEMS. 10.USE A 10 MIL. POLYETHYLENE LINED DUMPSTER AS AN ALTERNATE. PLAN 1.ACTUAL LAYOUT DETERMINED IN FIELD. 2.THE CONCRETE WASHOUT SIGN SHALL BE INSTALLED WITHIN 30FT. OF THE TEMP. CONCRETE WASHOUT FACILITY. SECTION CONCRETE WASHOUT APRON ON THIS SIDE OF THE DIKE SHALL BE FOLDED UNDER THE DIKE SECTION 20" AND GLUED DOWN CONSTRUCTION AREA SECTION A-A DIKE PLAN VIEW APRON ADHESIVE FLOW ADHESIVE 20"20"ADHESIVEADHESIVEADHESIVE ADHESIVE NOTES 1. INSTALLED SILT DIKE UNIT SHALL HAVE CONTINUOUS AND FIRM CONTACT WITH PAVEMENT. 2. ADHESIVES SHALL BE LIQUID NAIL OR APPROVED EQUAL FOR CONCRETE PAVEMENT APPLICATIONS AND EMULSIFIED ASPHALT FOR ASPHALT APPLICATIONS. ADHESIVE SHALL BE PLACED WHERE THE UNITS OVERLAP AND A 20" STRIP ALONG BOTH EDGES. FLOW OVERLAP PER MANUFACTURER'S RECOMMENDATIONS SILT DIKE (ON EXISTING PAVEMENT) (NO SCALE) ALTERNATE CONTRACTOR MAY USE A LINED (10 MIL. POLYETHYLENE) DUMPSTER FOR CONCRETE WASHOUT. NOTE: DUMPSTER IS TO BE USED FOR CONCRETE WASHOUT ONLY. NO CONSTRUCTION WASTE OR DEBRIS SHALL BE ALLOWED TO PREVENT TEARING OF THE LINER. TEMPORARY SEED TABLE 1. TEMPORARY SEEDING SPECIFICATIONS AUG. 1 - SEPT. 1 GERMAN MILLET WHEAT OR RYE 150 LBS. 1 TO 1½ INCHES SEPT. 15 - OCT. 30 SPRING OATS 100 LBS. 1 INCH MARCH 1 - APRIL 15 ANNUAL RYEGRASS 40 LBS.¼ INCH MARCH 1 - MAY 1 40 LBS.1 TO 2 INCHES MAY 1 - JUNE 1 SUDANGRASS 35 LBS.MAY 1 - JULY 30 BUCKWHEAT 60 LBS. APRIL 15 - JUNE 1 CORN (BROADCAST)300 LBS.MAY 11 - AUG. 10 SORGHUM 35 LBS.MAY 1 - JULY 15 1 TO 2 INCHES 1 TO 2 INCHES 1 TO 2 INCHES 1 TO 2 INCHES 1. PERENNIAL SPECIES MAY BE USED AS A TEMPORARY COVER, ESPECIALLY IF THE AREA TO BE SEEDED WILL REMAIN IDLE FOR MORE THAN ONE YEAR. 2. SEEDING DONE OUTSIDE THE OPTIMUM SEEDING DATES INCREASES THE CHANCES OF SEEDING FAILURE. DATES MAY BE EXTENDED OR SHORTENED BASED ON THE LOCATION OF THE PROJECT SITE WITHIN THE STATE. NOTES 1. MULCH ALONE IS AN ACCEPTABLE TEMPORARY COVER AND MAY BE USED IN LIEU OF TEMPORARY SEEDING, PROVIDED THAT IT IS APPROPRIATELY ANCHORED. 2. A HIGH POTENTIAL FOR FERTILIZER, SEED, AND MULCH TO WASH EXISTS ON STEEP BANKS, CUTS, AND IN CHANNELS AND AREAS OF CONCENTRATED FLOW. SEEDBED PREPARATION 1. TEST SOIL TO DETERMINE PH AND NUTRIENT LEVELS. 2. APPLY SOIL AMENDMENTS AS RECOMMENDED BY THE SOIL TEST. IF TESTING IS NOT DONE, APPLY 400 TO 600 POUNDS PER ACRE OF 12-12-12 ANALYSIS FERTILIZER, OR EQUIVALENT. 3. WORK THE SOIL AMENDMENTS INTO THE UPPER TWO TO FOUR INCHES OF THE SOIL WITH A DISK OR RAKE OPERATED ACROSS THE SLOPE. SEEDING 1. SELECT A SEED SPECIES OR AN APPROPRIATE SEED MIXTURE AND APPLICATION RATE FROM TABLE 1. 2. APPLY SEED UNIFORMLY WITH A DRILL OR CULTIPACKER SEEDER OR BY BROADCASTING. PLANT OR COVER SEED TO THE DEPTH SHOWN IN TABLE 1. NOTES 1. IF DRILLING OR BROADCASTING THE SEED, ENSURE GOOD SEED-TO-SOIL CONTACT BY FIRMING THE SEEDBED WITH A ROLLER OR CULTIPACKER AFTER COMPLETING SEEDING OPERATIONS. 2. DAILY SEEDING WHEN THE SOIL IS MOIST IS USUALLY MOST EFFECTIVE. 3. IF SEEDING IS DONE WITH A HYDROSEEDER, FERTILIZER AND MULCH CAN BE APPLIED WITH THE SEED IN A SLURRY MIXTURE. 3. APPLY MULCH AND ANCHOR IT IN PLACE. MAINTENANCE 1.INSPECT WITHIN 24 HOURS OF EACH RAIN EVENT AND AT LEAST ONCE EVERY SEVEN CALENDAR DAYS. 2. CHECK FOR EROSION OR MOVEMENT OF MULCH AND REPAIR IMMEDIATELY. 3. MONITOR FOR EROSION DAMAGE AND ADEQUATE COVER (80 PERCENT DENSITY); RESEED, FERTILIZE, AND APPLY 4. MULCH WHERE NECESSARY. 4. IF NITROGEN DEFICIENCY IS APPARENT, TOP-DRESS FALL SEEDED WHEAT OR RYE SEEDING WITH 50 POUNDS PER ACRE OF NITROGEN IN FEBRUARY OR MARCH. REFERENCE IN CHAPTER 7 PAGES 31-33 IN THE INDIANA STORM WATER QUALITY MANUAL TEMPORARY SEED TABLE 1. TEMPORARY SEEDING SPECIFICATIONS SEED SPECIES1 RATE PER ACRE PLANTING DEPTH OPTIMUM DATES2 EXISTING CONCRETE OR ASPHALT PAVEMENT MAINTENANCE 1.INSPECT DAILY AND AFTER EACH STORM EVENT FOR LEAKS, SPILLS, TRACKING OF SOIL BY EQUIPMENT, AND THE POLYETHYLENE LINING FOR FAILURE. 2.ONCE CONCRETE WASTES HARDEN, REMOVE AND DISPOSE OF THE MATERIAL. EXCESS CONCRETE SHOULD BE REMOVED WHEN THE WASHOUT SYSTEM REACHES 50 PERCENT OF THE DESIGN CAPACITY AND SHOULD NOT BE USED UNTIL PROPERLY CLEANED OUT. 3.PLASTIC LINER SHOULD BE REPLACED AFTER EVERY CLEANING, THE REMOVAL OF MATERIAL USUALLY DAMAGES IT. 4.REPAIR OR ENLARGE AS NECESSARY TO MAINTAIN CAPACITY FOR CONCRETE WASTE. 5.IF LIQUIDS DO NOT EVAPORATE IT MAY BE NECESSARY TO VACUUM OR REMOVE THE LIQUIDS AND DISPOSE OF THEM IN AN ACCEPTABLE METHOD. 6.WHEN CONCRETE WASHOUT SYSTEMS ARE NO LONGER REQUIRED THEY SHALL BE CLOSED AND HOLES, DEPRESSIONS AND OTHER DISTURBANCES ASSOCIATED WITH THE SYSTEM SHOULD BE BACKFILLED, GRADED, AND STABILIZED. MAINTENANCE 1) AFTER EACH STORM EVENT AND AT WEEKLY INTERVALS, INSPECT THE SILT DIKES AND LEVEL OF SEDIMENT PRESENT UPSTREAM OF THE DIKE. 2) IF THE SEDIMENT IS 1/2 THE HEIGHT OF THE DIKE, REMOVE SEDIMENT AND DISPOSE OF IN AN APPROVED LOCATION. 4) INSPECT DIKE TO ENSURE STORMWATER FLOW IS NOT FLOWING AROUND OR UNDER THE DIKE. 5) REPLACE SATURATED OR REPAIR TORN OR DAMAGED DIKES AS REQUIRED. INSTALLATION 1) INSTALL SILT DIKE PER THE PLAN LOCATIONS. 2) INSTALL DIKE ON PAVEMENT SURFACE PER MANUFACTURERS RECOMMENDATIONS AND INSURE GOOD CONTACT WITH THE ASPHALT SURFACE WITH NO VOIDS UNDER FABRIC. 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College AvenueIndianapolis, Indiana 46280weihe.netBuild with confidence.SMENGINEERS317 | 846 - 6611800 | 452 - 6408317 | 843 - 0546 faxWEIHELand Surveying | Civil EngineeringLandscape ArchitecturePROJECT NO.:REVISIONS AND ISSUESDATEBYDWG NAME:DESIGNED BY:DRAWN BY:CHECKED BY:DATE:COIR LOG (FIBER ROLL) 2"x2"x36" HARDWOOD STAKES (TYP.) @ 5.0' O.C. 12" MIN. DEEP FROM GRADE EXISTING GRADE 12" FILTREXX SILTSOXX OR AMERICAN EXCELSIOR CURLEX PER MANUFACTURER'S SPECIFICATIONS OR APPROVED EQUAL