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CLEAR PLASTIC <br />COVERING <br />STAKE AND SAND BAG <br />(TYP. ) <br />1' OVERLAP — ALL SEAMS TO <br />—� BE TAPED OR WEIGHTED DOWN <br />WITH SAND BAGS AT 10' <br />CENTERS ALONG THE SEAM <br />ISOMETRIC VIEW <br />PLASTIC COVERING DETAIL <br />SCALE: N.T.S. <br />EMERGENCY OVERFLOW <br />WATER SURFACE <br />31 <br />ELEV.=15.00 <br />iui <br />123: PLASTIC COVERING) <br />V�.m <br />ELEV 16.55 <br />ill=1 I=111=111=11 [111=11 <br />1-1 11=1I 1-1 I 1-1 I I- <br />1.55' <br />L = 6.0' MIN. 6" TO 8" QUARRY SPALLS <br />MINIMUM 12" THICKNESS <br />EMERGENCY OVERFLOW SPILLWAY AT SEDIMENT POND <br />(BMP C_241: TEMPORARY SEDIMENT POND) <br />Ivvl SCALE: N.T.S. <br />SECTION A —A <br />OVERLAP DETAIL <br />PLASTIC COVERING NOTES <br />1. PLASTIC SHEETING SHALL HAVE A MINIMUM THICKNESS OF 6 MILS AND SHALL <br />MEET THE REQUIREMENTS OF THE STATE STANDARD SPECIFICATIONS SECTION <br />9-14.5(3). <br />2. COVERING SHALL BE INSTALLED AND MAINTAINED TIGHTLY IN PLACE BY USING <br />SANDBAGS OR TIRES ON ROPES WITH A MAXIMUM 10—FOOT GRID SPACING IN ALL <br />DIRECTIONS. ALL SEAMS SHALL BE TAPED OR WEIGHTED DOWN FULL LENGTH AND <br />THERE SHALL BE AT LEAST A 12—INCH OVERLAP OF ALL SEAMS. <br />3. CLEAR PLASTIC COVERING SHALL BE INSTALLED IMMEDIATELY ON AREAS SEEDED <br />BETWEEN NOVEMBER 1 AND MARCH 31 AND REMAIN UNTIL VEGETATION IS FIRMLY <br />ESTABLISHED. <br />4. WHEN THE COVERING IS USED ON UN —SEEDED SLOPES, IT SHALL BE KEPT IN <br />PLACE UNTIL THE NEXT SEEDING PERIOD. <br />5. PLASTIC COVERING SHEETS SHALL BE BURIED TWO FEET AT THE TOP OF SLOPES <br />IN ORDER TO PREVENT SURFACE WATER FLOW BENEATH SHEETS. <br />6. PROPER MAINTENANCE INCLUDES REGULAR CHECKS FOR RIPS AND DISLODGED <br />ENDS. <br />POLYETHYLENE CAP <br />PERFORATED POLYETHYLENE <br />DRAINAGE TUBING, DIAMETER MIN. 2" <br />LARGER THAN DEWATERING ORIFICE. <br />TUBING SHALL COMPLY WITH ASTM <br />F667 AND AASHTO M294. <br />WATERTIGHT <br />COUPLING <br />18" MIN. <br />PROVIDE ADEQUATE STRAPPING <br />CORRUGATED METAL RISER. <br />ONE —FOOT INTERVALS SHALL <br />BE MARKED ON THE RISER TO <br />INDICATE SEDIMENT DEPTH. <br />STACK 3.5' MIN. <br />WELD <br />=15 <br />1° <br />CONCRETE BASE` ° <br />EXISTING SD PIPING <br />DEWATERING ORIFICE, SCHEDULE <br />40 STEEL STUB MIN. 4"0 <br />`— ALTERNATIVELY, METAL <br />2X RISER DIA. MIN. STAKES AND WIRE MAY BE <br />USED TO PREVENT FLOTATION <br />RISER PIPE AT SEDIMENT POND <br />lnsz (BMP C241: TEMPORARY SEDIMENT POND) <br />ivvl SCALE: N.T.S. <br />(N <br />z <br />O <br />5 <br />w <br />w <br />w <br />U <br />0 <br />0 <br />m <br />w <br />rn <br />0 <br />CD <br />0 <br />Ln <br />Li <br />z <br />0 <br />w <br />cn <br />w <br />w <br />w <br />Li <br />0 <br />C3 <br />O <br />N <br />m <br />0 <br />O <br />~ <br />Y <br />Y <br />Y <br />0000 <br />Z <br />CD <br />W <br />Lj <br />o <br />z <br />w <br />a <br />< <br />� <br />a <br />Q 0 <br />0 <br />U <br />0 <br />N <br />t� <br />d o <br />N <br />X <br />0 <br />w <br />cr <br />Q <br />w <br />x <br />C900 <br />o� <br />t <br />♦ ♦. <br />Z <br />_Lo <br />q <br />J <br />V <br />Z <br />} <br />W <br />Q <br />I,- <br />1M <br />_ <br />o <br />�, <br />to <br />O <br />H <br />X <br />U- <br />N <br />.� <br />c <br />J <br />06 <br />� <br />— <br />— <br />(P <br />W <br />= <br />W <br />U <br />w <br />N <br />F <br />Z <br />� <br />LLJ <br />N <br />to <br />n <br />m <br />Ix <br />H <br />a <br />Z <br />J <br />W <br />L <br />-- <br />W <br />U <br />0_ <br />Lj <br />O <br />Q <br />M <br />N <br />Q <br />f!) <br />0 <br />w <br />J <br />a <br />N <br />N <br />co <br />� <br />(~) <br />0 <br />0 <br />C" <br />a:= <br />mW <br />Z <br />cc <br />F— <br />J <br />0 <br />~ <br />Z <br />to <br />0 <br />(o <br />Z) <br />U <br />m <br />O <br />0 <br />O 3 <br />0 <br />J_ <br />Z <br />D W w <br />Q <br />(~j cn <br />LLI <br />w <br />h <br />cr <br />w <br />L <br />J <br />F— <br />Z�z <br />05 Q <br />Z <br />w0 i z <br />CL <br />y <br />W iir cr r V <br />0 W W � <br />0 0 <br />w <br />N = <br />Cc <br />NW <br />APPROVEDPU13� E v � � R I;I` ", <br />C1.2 <br />ICY.__ <br />pp�iTATE <br />rl <br />Y QF EVERE�RE�ELVE�R PERIviITOcoPROJECT <br />NO., <br />