EROSION CONTROL GENERAL NOTES EC JAN 2017 C.B.

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1 EROSION CONTROL GENERAL NOTES EC - 000

2 EROSION CONTROL GENERAL NOTES EC - 001

3 INSTALL TEMPORARY DRIVEWAY CULVERT IF THERE IS A ROADSIDE DITCH PRESENT EXISTING PAVEMENT OR APPROVED ACCESS POINT OR AS PRACTICABLE 1'x1' DITCHES ON BOTH SIDES 100' MIN.* OF PAD TO TRAP SEDIMENT RADIUS = 25' MIN. 4" - 8" QUARRY SPALLS (2" MIN SIZE FOR SINGLE FAMILY/DUPLEX SITES) FULL WIDTH OF INGRESS/EGRESS AREA (15' MIN.) SUBGRADE REINFORCEMENT GEOTEXTILE REQUIRED 12" MIN. DEPTH STABILIZED CONSTRUCTION ENTRANCE EC - 010

4 6" 2" x 2" BY 14 GA. WIRE OR EQUIVALENT BACKING FILTER FABRIC MATERIAL (36" WIDE ROLLS) ATTACH FILTER FABRIC TO POSTS USING STAPLES, RING WIRES, OR EQUIVALENT MINIMUM 6"x 6" TRENCH FILTER FABRIC MATERIAL BURY FILTER FABRIC 6" 6" 8' MAX. (6' IF NOT USING WIRE MESH BACKING) LINE TRENCH WITH FILTER FABRIC AND BACKFILL WITH NATIVE SOIL OR 3/4" - 1.5" CLEAN GRAVEL 2" x 2" WOOD POSTS, STEEL FENCE POSTS, REBAR, OR EQUIVALENT FRONT VIEW SIDE VIEW 4' 0" 1'-6" 2' 6" SEDIMENT FENCE EC - 040

5 SIDEWALK SUBGRADE CURB BARRIER EC - 055

6 4' MIN. OUTFLOW CHANNEL IF CONSTRUCTED BY EXCAVATION 1' OVERFLOW DEPTH 2' SETTLING DEPTH 1.5' SEDIMENT STORAGE ' MAX. CROSS SECTION FILTER FABRIC FENCING OVERFLOW SPILLWAY 6' MIN. LENGTH 6' MIN. TO BE CONSTRUCTED BY EXCAVATION 2" - 4" ROCK 1' 3 4 " " WASHED GRAVEL GEOTEXTILE SEDIMENT TRAP OUTLET SEDIMENT TRAP EC - 060

7 POND LENGTH >= 3 X POND WIDTH RIP RAP INLET SEDIMENT FENCE (OPTIONAL) LEVEL A A BOTTOM EMERGENCY OVERFLOW SPILLWAY CREST SEDIMENT FENCE PERFORATED DRAIN PIPE IN GRAVEL-FILLED TRENCH RIP RAP OUTLET PIPE PLAN VIEW RISER PIPE W/ ANCHOR BASE SPILLWAY DEPTH PROVIDE TRASH RACK ON RISER PIPES ³ 18" DIA. RISER PIPE OPEN AT TOP (PRINCIPLE SPILLWAY) FREEBOARD 1' 6' MIN. EMERGENCY OVERFLOW SPILLWAY CREST DEWATERING OUTLET 2' MIN SETTLING DEPTH 3' MAX STORAGE DEPTH 1' OUTLET PIPE SEDIMENT FENCE LEVEL BOTTOM PERFORATED DRAIN PIPE LINE TRENCH W/ FILTER FABRIC DRAIN ROCK ANCHOR BASE TO PREVENT FLOTATION SECTION A - A ANTI-SEEP COLLARS RIP-RAP (ENERGY DISSIPATION) SEDIMENT BASIN EC - 070

8 2:1 MAX. SLOPE LEVEL BOTTOM 1' MIN. 2' MIN. SWALE SPACING DEPENDS ON SLOPE GRADIENT DIKE MATERIAL COMPACTED TO 95% OF ASTM D1556 2:1 MAX. SLOPE 2' MIN. 18" MIN. DIKE SPACING DEPENDS ON SLOPE GRADIENT INTERCEPTOR SWALES AND DIKES EC - 080

9 SURFACE ROUGHENING EC - 085

10 WOOD STAKES (2" X 2" X 3') INLET WITH GRATE FILTER FABRIC (ALL FOUR SIDES) WOOD STAKES (2" X 2" X 3') FILTER FABRIC MATERIAL STAPLED TO STAKES RUNOFF WATER WITH SEDIMENT INLET WITH GRATE BURY FILTER FABRIC (MINIMUM 6" DEPTH) FILTER FABRIC INLET BARRIER EC - 090

11 BACK OF CURB STREET CURB INLET GRATE CURB INLET 7 ZIP TIES AND HOLD-DOWN PADS FILTER MAT PLAN VIEW FLAT STREET GRATE 8 ZIP TIES AND HOLD-DOWN PADS FILTER MAT CURB INLET NOTES: 1. POSITION FILTER MAT ON INLET GRATE WITH MINIMUM 1 INCH OVERLAP ON EACH SIDE. 2. ATTACH WITH CABLE TIES. USE A MINIMUM OF 7 TIES FOR CURB INLET GRATES AND 8 FOR FLAT INLET GRATE. 3. INSPECT ONCE PER WEEK AND WITHIN 24 HOURS FOLLOWING A 0.5 INCH RAIN EVENT. 4. CLEAN INLET PROTECTION AFTER EACH SIGNIFICANT RAIN EVENT AND REMOVE DEBRIS FROM BEHIND MATS. 5. REPLACE WITH NEW FILTER MAT AS NEEDED TO ENSURE PROPER FUNCTION. INLET PROTECTION FILTER MAT EC - 095

12 BIOFILTER BAG STAKE A A FLOW FLOW DITCH BOTTOM STAKES BIOFILTER BAG PLAN SECTION A-A DITCH INLET BIOFILTER BAGS FACE OF CURB FLOW FLOW BIOFILTER BAG 18" MAX. STAKES CATCH BASIN AREA DRAIN INLET PROTECTION BIOFILTER BAGS EC - 120

13 VIEW LOOKING UPSTREAM SPILLWAY A 2" - 4" ROCK 18" WEIR. DEPTH 'D' 8" MIN EXISTING CHANNEL A EFFECTIVE DAM HEIGHT VARIES BASED ON FLOW 8" MIN 1 SPILLWAY EXTENDED SECTION A-A 'L' = THE DISTANCE SUCH THAT POINTS 'A' & 'B' ARE THE SAME ELEVATION 'L' SPILLWAY EFFECTIVE HEIGHT VARIES BASED ON FLOW FLOW 2 1 1' SUMP OPTIONAL 2 1 ROCK CHECK DAM EC - 130

14 B A FLOW FRONT APRON STAPLES (TYP.) (3' MAX. SPACING) REAR APRON PLAN VIEW C L DITCH CHECK DAM SECTION A 3" MIN. BACK OF DITCH (TYP.) BACK OF DITCH (TYP.) FLOW BACK OF DITCH (TYP.) FRONT APRON REAR APRON FLOW A B ISOMETRIC VIEW DIG TRENCH APPROXIMATELY 6" WIDE AND DEEP, STAPLE END OF FILTER FABRIC AND BACKFILL WITH NATIVE MATERIAL ORIENT THE SEWN EDGE OF THE CHECK DAMN TOWARD THE UPSTREAM SIDE CHECK DAM STAPLES (TYP.) 8" MIN. LENGTH SECTION B GEOTEXTILE ENCASED CHECK DAM EC - 140

15 EXTEND BLANKET FAR ENOUGH OVER CREST OF SLOPE TO PREVENT UNDERCUTTING. MIN. 6" EDGE OVERLAP ANCHOR TOP 12 INCHES OF BLANKET IN 6" x 6" TRENCH AND STAPLE AT 12" INTERVALS. 6" MIN. END OVERLAP STAPLE OVERLAPS EXTEND BLANKET 2 FEET BEYOND TOE OF SLOPE, TURN THE END UNDER 4" & 12" INTERVALS. 12" INITIAL CHANNEL ANCHOR TRENCH EROSION CONTROL BLANKET-SLOPE INSTALLATION EC - 150

16 6" 12" 6" LONGITUDINAL ANCHOR TRENCH TERMINAL SLOPE & CHANNEL ANCHOR TRENCH 3'-5' INTERVALS. CHANNEL BOTTOM CHECK 25' INTERVALS ISOMETRIC VIEW 12" INITIAL CHANNEL ANCHOR TRENCH 6" 6" INTERMITTENT CHECK SLOT EROSION CONTROL BLANKET-CHANNEL INSTALLATION EC - 155

17 DIKE MATERIAL COMPACTED 90% MODIFIED PROCTOR CPEP, HDPE OR EQUIVALENT PIPE INTERCEPTOR DIKE 12" MIN. PROVIDE RIPRAP PAD OR EQUIVALENT ENERGY DISSIPATION STANDARD FLARED END SECTION NOTES: 1. THRUST BLOCKS SHALL BE INSTALLED ANYTIME 90 DEGREE BENDS ARE UTILIZED. 2. PIPE SHALL BE SECURED ALONG ITS ENTIRE LENGTH WITH STEEL "T" POSTS AND WIRE (POSTS INSTALLED ON BOTH SIDES OF PIPE AND PIPE WIRED TO POSTS). POSTS SHALL HAVE A MINIMUM SPACING OF 20 FEET. 3. INLET AND ALL SECTIONS MUST BE SECURELY FASTENED TOGETHER WITH GASKETED WATERTIGHT FITTINGS. 4. DISCHARGE TO A STABILIZED WATERCOURSE, SEDIMENT RETENTION FACILITY, OR STABILIZED OUTLET. PIPE SLOPE DRAIN EC - 170

18 CONTOUR LINE (TYP.) ANGLE TERMINAL END UPHILL 24" TO 48" TO PREVENT FLOW AROUND WATTLE (TYP.) LENGTH VARIES 12" MINIMUM OVERLAP (TYP.) LIVE STAKE SPACING 36" O.C. 2" 2" 24" WOODEN STAKE (TYP.) 4"-5" 8"-10" DIAMETER STAGGER OVERLAPS (TYP.) 1" X 1" STAKE 3'-4' STRAW ROLLS MUST BE PLACED ALONG SLOPE CONTOURS 10'-25' SPACING DEPENDS ON SOIL TYPE AND SLOPE STEEPNESS SEDIMENT, ORGANIC MATTER, AND NATIVE SEEDS ARE CAPTURED BEHIND THE ROLLS. STRAW WATTLES EC - 180

19 PLASTIC COVERING/SHEETING EC - 190

20 EXCAVATED WASHOUT STRUCTURE WASHOUT STRUCTURE WITH WOOD PLANKS CONCRETE WASHOUT EC - 200