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TESC INFO(PER WASHINGTON STATE DEPARTMENT OF TRANSPORTATION.TEMPORARY <br /> EROSION AND SEDIMENT CONTROL MANUAL M 3109.02) <br /> GENERAL NOTES <br /> 1. ANY EXCAVATION MATERIAL REMOVED FROM THE CONSTRUCTION SITE SHALL BE <br /> DEPOSITED AT AN APPROVED SITE. <br /> 2. ALL WORK LISTED BELOW IS THE MINIMUM REQUIREMENT. AN EROSION CONTROL <br /> SYSTEM USING THE FOLLOWING BMP'S(BEST MANAGEMENT PRACTICE)IS TO BE <br /> INSTALLED PRIOR TO ANY CLEARING OR GRADING. ADDITIONAL EROSION CONTROLS MAY <br /> BE REQUIRED BY THE ENGINEER AS WEATHER AND FIELD CONDITIONS DICTATE- THESE <br /> BMP'S ARE BASED ON THE WASHINGTON STATE STORMWATER MANAGEMENT MANUAL <br /> FOR WESTERN WASHINGTON. <br /> TEMPORARY EROSION CONTROLS <br /> CLEARING SHALL BE LIMITED TO THE AREA OF CONSTRUCTION ACTIVITY. DURING WET <br /> WEATHER SEASON(OCTOBER 1 THROUGH APRIL 30)THE TIME OF DISTURBED SOIL <br /> EXPOSURE SHALL NOT EXCEED 24 HOURS. FROM MAY 1 TO SEPTEMBER 30 THE TIME OF <br /> EXPOSURE SHALL NO BE MORE THAN 5 DAYS. EXPOSED SOIL MUST BE COVERED AT THE <br /> END ON THE CONSTRUCTION WEEK AND ALSO THE THREAT OF RAIN. THE CONTRACTOR <br /> SHALL HAVE SUFFICIENT AMOUNT OF MATERIALS FOR THE FOLLOWING BMP'S TO <br /> PROVIDE EROSION CONTROL FOR THE SITE AND EMERGENCY PURPOSES:PLASTIC <br /> COVERINGS.TEMPORARY CONSTRUCTION EXIT,&SILT FENCE. <br /> SEDIMENT TRAPPING <br /> DEWATERING DEVICE SHALL BE DISCHARGED WHERE SEDIMENT,AND/OR OTHER <br /> POLLUTANTS,WILL NOT ENTER THE DRAINAGE SYSTEM. PER DEPARTMENT OF ECOLOGY <br /> GUIDELINES,WASTEWATER FROM PORTLAND CEMENT CONCRETE,MASONRY,AND <br /> ASPHALT CONCRETE CUTTING OPERATIONS SHALL NOT BE DISCHARGED TO STORM <br /> DRAINAGE SYSTEMS OR SURFACE WATERS. SEDIMENT AND GRIT CONTAMINATION FROM <br /> CUTTING OPERATIONS SHALL BE PREVENTED FROM ENTERING THE STORM DRAINAGE f <br /> SYSTEM OR SURFACE WATERS. SYSTEMS OF SEDIMENT TRAPPING INCLUDE BUT NOT N <br /> LIMITED TO CATCH BASIN INSERTS&STRAW BALE CHECK DAMS. <br /> 00 <br /> TESC INFO SN/AE 17 Q <br /> H <br /> H <br /> 50'VEGETATED W <br /> FLOW PATH ``cc <br /> ui <br /> o / <br /> \o W <br /> 1 JOINTS IN FILTER FABRIC SHALL BE �� -_ - � ( I W WI <br /> SPLICED AT POSTS. USE STAPLES,WIRE <br /> RINGS OR EQUIVALENT TO ATTACH w 3'-0" 1 Q <br /> FABRIC TO POSTS. ? _ TYP I It 1 <br /> 2"X2"BY14 Ga.WIRE OR- <br /> EQUIVALENT,IF I - = <br /> STANDARD STRENGTH w ',� 5°-0" w <br /> FABRIC USED Z w 1 <br /> FILTER FABRIC N Y I I SPALNH POAD, 1 y�UT Q W <br /> UO I 6"DE TH,MIN.DOW = 1 <br /> ICI ¢ I r — a o <br /> i--,T I I�l,I�F �I��— ( / W <br /> I� nr�I =I�IlI=111�I IJ11=1I —�� 1 0 1 o o <br /> _ _ Z 140' O / <br /> POST SPACING MAY 1 1�MINIMUM 4"x4"TRENCH ' - CONSTRUCTION <br /> TREE SILT FENCE ACCESS <br /> U BE INCREASED TO S IF BACKFILL TRENCH WITH NATIVE PROTECTION O <br /> WIRE BACKING IS USED <br /> SOIL OR 3/4'TO 1-1/2'WASHED <br /> GRAVEL <br /> 2-x4"WOOD POSTS,STEEL FENCE �/� <br /> POSTS,REBAR,OR EQUIVALENT Y l <br /> r- <br /> NOTE:FILTER FABRIC FENCES SHALL BE INSTALLED ALONG CONTOURS WHENEVER IN <br /> POSSIBLE,SEE THE KING COUNTY SURFACE WATER DESIGN MANUAL,APPENDIX C,SECTION <br /> C.3.6 FOR ADDITIONAL DESIGN,INSTALLATION AND MAINTENANCE SPECIFICATIONS. <br /> SILT FENCE SNAAE 18 <br /> PRIOR TO ANY SITE CLEARING OR GRADING,THOSE AREAS THAT ARE TO REMAIN <br /> UNDISTURBED DURING PROJECT CONSTRUCTION SHALL BE DELINEATED.AT A MINIMUM, <br /> CLEARING LIMITS SHALL BE INSTALLED AT THE EDGES OF ALL CRITICAL AREA BUFFERS AND REVISION SCHEDULE <br /> ANY OTHER AREAS REQUIRED TO BE LEFT UNCLEARED SUCH AS PORTIONS OF THE SITE <br /> SUBJECT TO CLEARING LIMITS UNDER SMC 16.15, CANOPY DRIP LINE NO. TYPE REVISION DATE <br /> AREAS AROUND SIGNIFICANT TREES IDENTIFIED <br /> TO BE RETAINED PURSUANT TO SMC DEF INES TREE& <br /> 21A.37,FLOW CONTROL BMP AREAS TO BE VEGETATION PROTECTION <br /> PROTECTED,AND OTHER AREAS IDENTIFIED AREA <br /> TO BE LEFT UNDISTURBED TO PROTECT <br /> SENSITIVE FEATURES. <br /> MARKING CLEARING LIMITS BY DELINEATING <br /> THE SITE WITH A CONTINUOUS LENGTH OF <br /> BRIGHTLY COLORED SURVEY TAPE IS <br /> SOMETIMES SUFFICIENT.THE TAPE MAY BE <br /> SUPPORTED BY VEGETATION OR STAKES, <br /> AND IT SHALL BE 3 TO 6 FEET HIGH AND <br /> HIGHLY VISIBLE.CRITICAL AREAS AND THEIR <br /> BUFFERS REQUIRE MORE SUBSTANTIAL <br /> PROTECTION AND SHALL BE DELINEATED <br /> WITH PLASTIC OR METAL SAFETY FENCES REQUIRED REQUIRED <br /> OR STAKE AND WIRE FENCES. 5 SIQUIR E FENCING 5 <br /> SILT FENCE,IN COMBINATION <br /> WITH SURVEY FLAGGING,IS o z <br /> ALSO AN ACCEPTABLE METHOD c <br /> OF MARKING CRITICAL AREAS <br /> AND THEIR BUFFERS. <br /> I SHEET NAME: <br /> CLEARING LIMITS AROUND <br /> SIGNIFICANT TREES TO BE <br /> INSTALLED FIVE FEET BEYOND TREE&VEGETATION FENCING I PLAN CC^ <br /> THE DRIP LINE. AROUND ENTIRE DRIP LINE ON T ESC r /-1tn <br /> PERMIT SITE. <br /> SHEET NUMBER: <br /> CLEARING LIMITS SAE 19 <br /> TESC PLAN N SCzo-0 1 A�-� <br />