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Home My WebLink AboutR-4111050 EROSION CONTROL NOTES 1. BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACT/V/TY OCCURS, A PRE -CONSTRUCTION MEET/NG SHALL BE HELD AMONG THE CITY OF RENTON, HEREBY REFERRED TO AS THE CITY, THE APPLICANT, AND THE APPLICANT'S CONTRACTOR. 2. THE APPLICANT /5 RESPONSIBLE FOR OBTAINING THE WASHINGTON STATE DEPARTMENT OF ECOLOGY (ECOLOGY) CONSTRUCTION STORMWATER GENERAL PERM/T, IF /T /5 REQUIRED FOR THE PROJECT. THE APPLICANT SHALL PROVIDE THE CITY COP/ES OF ALL MONITORING REPORTS PROVIDED TO ECOLOGY ASSOCIATED WITH THE CONSTRUCTION STORMWATER GENERAL PERM/T. 3. THE ESC PLAN SET SHALL INCLUDE AN ESC CONSTRUCTION SEQUENCE DETAILING THE ORDERED STEPS THAT SHALL BE FOLLOWED FROM CONSTRUCTION COMMENCEMENT TO POST -PROJECT CLEANUP /N ORDER TO FULFILL PROJECT ESC REQUIREMENTS. 4. THE BOUNDARIES OF THE CLEARING LIMITS, SENSITIVE AREAS AND THEIR BUFFERS, AND AREAS OF VEGETATION PRESERVATION AND TREE RETENTION AS PRE SCR/BED ON THE PLAN(S) SHALL BE CLEARL Y DELINE A TED BY FENCING AND I� PROTECTED IN THE FIELD /N ACCORDANCE WITH APPENDIX D OF THE CITY OF RENTON SURFACE WATER DESIGN MANUAL (RENTON SWDM) PRIOR TO THE START OF CONSTRUCTION. DURING THE CONSTRUCTION PERIOD, NO DISTURBANCE BEYOND W THE CLEARING LIMITS SHALL BE PERMITTED. THE CLEARING LIMITS SHALL BE MAINTAINED BY THE APPLICANT/ESC C� SUPERVISOR FOR THE DURATION OF CONSTRUCTION. 5. STABILIZED CONSTRUCTION ENTRANCES SHALL BE INSTALLED AT THE BEGINNING OF CONSTRUCTION AND MAINTAINED FOR THE DURATION OF THE PROJECT. ADDITIONAL MEASURES, SUCH AS CONSTRUCTED WHEEL WASH SYSTEMS OR WASH PADS, MAY BE REQUIRED TO ENSURE THAT ALL PAVED AREAS ARE KEPT CLEAN AND TRACK-OUTTO ROAD RIGHT OF WAY DOES NZ NOT OCCUR FOR THE DURATION OF THE PROJECT. IF SEDIMENT IS TRACKED OFFSITE, PUBLIC ROADS SHALL BE CLEANED THOROUGHL Y A T THE END OF EACH DA Y, OR MORE FREQUENTL Y DURING WET WEA THE AS NECESSARY TO PREVENT OSEDIMENT FROM ENTERING WA TERS OF THE STA TE. 6. WASHOUT FROM CONCRETE TRUCKS SHALL BE PERFORMED OFF -SITE OR IN DESIGNATED CONCRETE WASHOUT AREAS V ONL Y. DO NOT WASH OUT CONCRETE TRUCKS ONTO THE GROUND, OR TO STORM DRAINS OR OPEN DITCHES. ON -SITE DUMPING OF EXCESS CONCRETE SHALL ONL Y OCCUR IN DESIGNATED CONCRETE WASHOUT AREAS. Q 7. ALL REQUIRED ESC BMPS SHALL BE CONSTRUCTED AND /N OPERATION PR/OR TO LAND CLEARING AND/OR CONSTRUCTION WTO PREVENT TRANSPORTAT/ON OF SED/UENT TO SURFACE WATER, DRAINAGE SYSTEMS AND ADJACENT PROPERTIES. ALL W ESC BMPS SHALL BE MAINTAINED IN A SATISFACTORY CONDITION UNTIL SUCH TIME THAT CLEARING AND/OR CONSTRUCTION IS COMPLETE AND POTENTIAL FOR ON -SITE EROSION HAS PASSED. ALL ESC BMPS SHALL BE REMOVED AFTER CONSTRUCTION IS COMPLETED AND THE SITE HAS BEEN STABILIZED TO ENSURE POTENTIAL FOR ON -SITE EROSION DOES NOT EXIST. THE IMPLEMENTATION, MAINTENANCE, REPLACEMENT, ENHANCEMENT AND REMOVAL OF ESC BMPS OSHALL BE THE RESPONSIBILITY OF THE APPLICANT. Q8. ANY HAZARDOUS MATERIALS OR LIQUID PRODUCTS THAT HAVE THE POTENTIAL TO POLLUTE RUNOFF SHALL BE DISPOSED OF PROPERL Y 9. THE ESC SUPS DEPICTED ON THIS DRAWING ARE INTENDED TO BE MIN/MUM REQUIREMENTS TO MEET ANTICIPATED SITE CONDITIONS. AS CONSTRUCTION PROGRESSES AND UNEXPECTED OR SEASONAL CONDITIONS DICTATE, THE APPLICANT SHALL ANTICIPATE THAT MORE ESC BMPS WILL BE NECESSARY TO ENSURE COUPLETS SILTATION CONTROL ON THE PROPOSED SITE. DURING THE COURSE OF CONSTRUCTION, IT SHALL BE THE OBLIGATION AND RESPONSIBILITY OF THE APPLICANT TO ADDRESS ANY NEW CONDITIONS THAT MAY BE CREATED BY THE ACTIVITIES AND TO PROVIDE ADDITIONAL ESC BMPS, OVER AND ABOVE MIN/MUM REQUIREMENTS, AS MAY BE NEEDED, TO PROTECT ADJACENT PROPERTIES AND WATER QUALITY OF THE RECE/V/NG DRAINAGE SYSTEM. 10. APPROVAL OF THIS PLAN /S FOR ESC ONL Y. IT DOES NOT CONSTITUTE AN APPROVAL OF STORM DRAINAGE DESIGN, SIZE NOR LOCATION OF PIPES, RESTRICTORS, CHANNELS, OR STORUWATER FACILITIES. 11. ANY DEWA TERING SYSTEM NECESSARY FOR THE CONSTRUCTION OF STORMWATER FACILITIES SHALL BE SUBMITTED TO THE CITY FOR REVIEW AND APPROVAL 12. ANY AREAS OF EXPOSED SOILS, INCLUDING ROADWA Y EMBANKMENTS, THA T WILL NOT BE DISTURBED FOR TWO DA YS DURING THE WET SEASON (OCTOBER 1ST THROUGH APRIL 307H) OR SEVEN DAYS DURING THE DRY SEASON (MAY 1ST THROUGH SEPTEMBER .307H) SHALL BE /MMED/ATEL Y STABILIZED WITH THE APPROVED ESC COVER METHODS (E. G., SEEDING, MULCHING, PLASTIC COVERING, ETC.) IN CONFORUANCE WITH APPENDIX D OF THE RENTON SWOM. 13. WET SEASON ESC REQUIREMENTS APPL Y TO ALL CONSTRUCTION SITES BETWEEN OCTOBER 1ST AND APRIL 307H, UNLESS OTHERWISE APPROVED BY THE CITY. 14. ANY AREA NEEDING ADDITIONAL ESC MEASURES, NOT REQUIRING IMMEDIATE ATTENTION, SHALL BE ADDRESSED WITHIN SEVEN (7) DA YS. 15. THE ESC BMPS ON INACTIVE SITES SHALL BE INSPECTED AND MAINTAINED AT A MIN/MUM OF ONCE A MONTH OR WITHIN 24 HOURS FOLLOWING A STORM EVENT. INSPECTION AND MAINTENANCE SHALL OCCUR MORE FREQUENTL Y AS REQUIRED BY THE CITY. 16. BEFORE COMMENCEMENT OF ANY CONSTRUCTION ACTIVITY, CATCH BASIN INSERTS PER THE CITY STANDARD PLAN 216.30 SHALL BE PROVIDED FOR ALL STORM DRAIN INLETS DOWNSLOPE AND WITHIN 500 FEET OF A DISTURBED OR CONSTRUCTION AREA, UNLESS THE RUNOFF THAT ENTERS THE INLET WILL BE CONVEYED TO A SEDIMENT POND OR TRAP. ALL CA TCH BASIN INSERTS SHALL BE PERIODICALL Y INSPECTED AND REPLACED AS NECESSARY TO ENSURE FULL Y FUNCTIONING CONDITION. 17. AT NO TIME SHALL SEDIMENT ACCUMULATION EXCEED 2/3 OF THE CAPACITY OF THE CATCH BASIN SUMP. ALL CATCH BASINS AND CONVEYANCE LINES SHALL BE CLEANED PRIOR TO PAVING. THE CLEAN/NG OPERATION SHALL NOT FLUSH SEDIMENT -LADEN WATER INTO THE DOWNSTREAM SYSTEM. 18. ANY PERMANENT STORUWATER FACILITY LOCATION USED AS A TEMPORARY SETTLING BASIN SHALL BE MODIFIED WITH THE NECESSARY ESC BMPS AND SHALL PROVIDE ADEQUATE STORAGE CAPACITY. IF THE TEMPORARY FACILITY /5 TO UL TIMATEL Y FUNCTION AS AN /NFIL TRA TION SYSTEM /N ITS PERMANENT STATE, THE TEMPORARY FACILITY SHALL BE ROUGH GRADED SO THAT THE BOTTOM AND SIDES ARE AT LEAST THREE FEET ABOVE THE FINAL GRADE OF THE PERUANENT FACILITY. 19. AREAS DESIGNATED ON THE PLANS) CONTAINING EX/S7NG 5TORYAATER FACILITIES OR ON -SITE BMPS (AMENDED SOILS, BIORETENTION, PERMEABLE PA VEMENT, ETC.) SHALL BE CLEARL Y FENCED AND PROTECTED USING ESC BMPS TO A VOID SEDIMENTATION AND COMPACTION DURING CONSTRUCTION. 20. PRIOR TO THE BEGINNING OF THE WE SEASON (OCTOBER 1ST), ALL DISTURBED AREAS SHALL BE INSPECTED TO IDENTIFY WHICH ONES SHALL BE SODDED OR SEEDED IN PREPARATION FOR THE WINTER RAINS DISTURBED AREAS SHALL BE SODDED OR SEEDED WITHIN ONE WEEK OF THE BEGINNING OF THE WET SEASON. AN EXHIBIT OF THOSE AREAS TO BE SODDED OR SEEDED AND THOSE AREAS TO REMAIN UNCOVERED SHALL BE SUBMITTED TO THE CITY FOR REVIEW. 21 PRIOR TO FINAL CONSTRUCTION ACCEPTANCE, THE PROJECT SITE SHALL BE STABILIZED TO PREVENT SEDIMENT -LADEN WATER FROM LEAVING THE PROJECT SITE, ALL ESC BMPS SHALL BE REMOVED, AND 5TORYW4TER CONVEYANCE SYSTEMS, FACILITIES, AND ON -SITE BMPS SHALL BE RESTORED TO THEIR FULL Y FUNCTION/NG CONDITION ALL DISTURBED AREAS OF THE PROJECT SITE SHALL BE VEGETATED OR OTHERWISE PERMANENTLY STABILIZED. AT A MIN/MUM, DISTURBED AREAS SHALL BE SODDED OR SEEDED AND MULCHED TO ENSURE THAT SUFFICIENT COVER WILL DEVELOP SHORTL Y AFTER FINAL APPROVAL MULCH WITHOUT SEEDING /5 ADEQUATE FOR AREAS TO BE LANDSCAPED BEFORE OCTOBER 1ST. 22. ROCKERIES ARE CONSIDERED TO BE A METHOD OF BANK STABILIZATION AND EROSION CONTROL ROCKERIES SHALL NOT BE CONSTRUCTED TO SERVE AS RETAINING WALLS. ALL ROCKERIES IN CITY ROAD RIGHTS -OF -WAY SHALL BE CONSTRUCTED IN ACCORDANCE WITH CITY STANDARDS. ROCKERIES OUTSIDE OF ROAD RIGHTS -OF -WAY SHALL BE CONSTRUCTED IN ACCORDANCE WITH THE INTERNATIONAL BUILDING CODE. STORMWA TER POLL UT/ON PREVENT/ON NOTES 1. ANY CHEMICALS STORED IN THE CONSTRUCTION AREAS W/LL CONFORM TO THE APPROPRIATE SOURCE CONTROL BMPS LS/TED IN VOLUME /V OF THE ECOLOGY STORMWATER MANUAL. IN WESTERN WASHINGTON, ALL CHEMICALS SHALL HAVE COVER, CONTAINMENT, AND PROTECTION PROVIDED ON SITE, PER BMP C153 FOR MATER/AL DELIVERY, STORAGE AND CONTAINMENT /N SWUMWW 2014. APPLICATION OF AGRICULTURAL CHEMICALS, INCLUDING FERTILIZERS AND PESTICIDES, SHALL BE CONDUCTED IN A MANNER AND AT APPLICATION RATES THAT W/LL NOT RESUL T /N LOSS OF CHEMICAL TO 5TORMWATER RUNOFF. MANUFACTURERS' RECOMMENDATIONS FOR APPL/CATION PROCEDURES AND RATES SHALL BE FOLLOWED. 2. ALL POLLUTANTS, INCLUDING WASTE MATERIALS AND DEMOLITION DEBRIS, THAT OCCUR ON -SITE DURING CONSTRUCTION SHALL BE HANDLED AND DISPOSED OF IN A MANNER THAT DOES NOT CAUSE CONTAMINATION OF STORMWATER. 3. ALL VEHICLES, EQUIPMENT, AND PETROLEUM PRODUCT STORAGE/DISPENSING AREAS W/LL BE INSPECTED REGULARL Y TO DETECT ANY LEAKS OR SPILLS, AND TO IDENTIFY MAINTENANCE NEEDS TO PREVENT LEAKS OR SPILLS. ON -SITE FUELING TANKS AND PETROLEUM PRODUCT STORAGE CONTAINERS SHALL INCLUDE SECONDARY CONTAINMENT. SP/LL PREVENTION MEASURES, SUCH AS DRIP PANS, W/LL SE USED WHEN CONDUCTING MAINTENANCE AND REPAIR OF VEHICLES OR EQUIPMENT. IN ORDER TO PERFORM EMERGENCY REPAIRS ON SITE, TEMPORARY PLASTIC WILL BE PLACED BENEATH AND, IF RAINING, OVER THE VEHICLE. CON TAMINA TED SURFACES SHALL BE CLEANED IMMED/ATEL Y FOLLOWING ANY DISCHARGE OR SPILL INCIDENT. 4. ANY AND ALL REFUELING W/LL BE PERFORMED ON A CONSTRUCTED ASPHAL T PAD. 5. CONCRETE WASTE SHALL SE HANDLED AS LISTED: A. UNUSED CONCRETE REMAINING IN THE TRUCK AND PUMP SHALL BE RETURNED TO ORIGINATING BATCH PLANT FOR RECYCLING. B. CONCRETE TRUCK CHUTES, PUMPS, INTERNALS, HAND TOOLS INCLUDING, BUT NOT LIMITED TO, SCREEDS, SHOVELS, RAKES, FLOATS, AND TROWELS SHALL BE WASHED OFF ONLY INTO FORMED AREAS AWAITING INSTALLATION OF CONCRETE OR ASPHAL T. C. EQUIPMENT THA T CANNOT BE EAS/L Y MOVED, SUCH AS CONCRETE PA VERS, SHALL ONL Y BE WASHED IN AREAS THA T DO NOT D/RECTL Y DRAIN TO NATURAL OR CONSTRUCTED 5TORYWATER CONVEYANCES D. WHEN NO FORMED AREAS ARE A VA/LABLE, CONCRETE WASTE SHALL BE DISCHARGED TO A PAVED OR LINED SUMP. SEE THESE PLANS FOR L OCA TION OF THE SUMP. WASTE WA TER WITHIN THE SUMP SHALL EITHER BE NEUTRAL/ZED PRIOR TO DISCHARGE TO THE SEDIMENTA TION FACILITY OR DISPOSED OF IN A MANNER THA T DOES NOT VIOLA TE GROUNDWATER OR SURFACE WATER QUALITY STANDARDS. 6. SLURRY, CUTTINGS, AND PROCESS WATER FROM SAWCUTTING AND SURFACING SHALL BE DISCHARGED TO FORMED AREAS AWAITING INS TALLA TION OF CONCRETE OR ASPHAL T OR TO PA VED OR LINED SUMP. 7. IF PH LEVELS ARE ELEVATED, THEN THE FOLLOWING MEASURES WILL BE TAKEN.• A. PREVENT HIGH PH WATER FROM ENTERING STORM SYSTEMS. B. ADJUST OR NEUTRALIZE THE WA TER TO THE RANGE OF 6. 5 TO 8. 5 SU USING APPROPRIA TE TECHNOL 0 G Y SUCH AS CARBON DIOXIDE SPARGING (LIQUID OR DRY ICE) C. WRITTEN APPROVAL WILL BE OBTAINED FROM ECOLOGY PRIOR TO USE OF CHEMICAL TREATMENT OTHER THAN CARBON DIOXIDE SPARGING OR DRY ICE. 9. THE CONTRACTOR SHALL DESIGNATE A PERSON AS THE RESPONSIBLE REPRESENTATIVE /N CHARGE OF EROSION CONTROL AND MAINTENANCE OF ALL EROSION CONTROL AND 5TORMWATER POLLUTION PREVENTION FACILITIES. TEMPORARY COVER 1. FROM MA Y 1 TO SEPTEMBER 30 ANY DISTURBED AREA /N WHICH NO ADD/TIONAL WORK WILL BE PERFORMED W/THIN 7 DAYS SHALL BE PROTECTED BY STRAW MULCH, WOOD FIBER MULCH, COMPOST, PLASTIC SHEETING, CRUSHED ROCK, OR OTHER APPROVED METHODS. 2. PREFERRED MULCH, HA Y, OR STRAW A. DEPTH OF THE APPL/CA TION A MIN/MUM OF 2 INCHES. B. APPLICA TION RA TE 75 TO 100 POUNDS (TWO TO THREE BALES) PER 1, 000 50. FT. 1. 5 TO 2.5 TONS (90 TO 120 BALES) PER ACRES 4. IN AREAS 2-1 OR STEEPER, ALL WINDBLOWN AREA MULCH MAY NEED TO BE ANCHORED DOWN W/TH THE NE -TT/NG, KEPT MOIST, OR BE AN EOUIVALENT APPROVED METHOD. PERMANENT COVER 1. CONSTRUCTION ACCEPTANCE WILL BE SUBJECT TO A WELL ESTABLISHED GROUND COVER THAT WILL FULFILL THE REQUIREMENT OF THE APPROVED CONSTRUCTION PLAN. 2. ALL DISTURBED AREAS, SUCH AS RETENTION FACILITIES, ROADWAY BACKSLOPES, ETC., SHALL BE SEEDED WITH A PERMANENT GROUND COVER OR AS DIRECTED BY CITY INSPECTOR TO MINIMIZE EROSION GRASS WILL BE DONE USING AN APPROVED HYDROSEEDER OR OTHERWISE APPROVED BY ENGINEER. THE FOLLOWING BMPS SHALL APPL Y TO ALL GRADING AND CLEARING ACTIVITY PERFORMED BETWEEN OCTOBER 1 AND MARCH 31: 1. GRADING AND CONSTRUCTION SHALL BE TIMED AND CONDUCTED IN STAGES TO MINIMIZE SOIL EXPOSURE. 2. EXPOSED SOILS SHALL BE COVERED WITHIN 2 DAYS USING DAM MULCH, SOD, HOG FUEL, PLASTIC OR OTHER APPROVED PROTECTED COVER. 3. INSPECT AND MAINTAIN SEDIMENT CONTROL MEASURES DAIL Y. A. REPLACE ANY DAMAGED BMPS AND UPGRADE BASED ON WEATHER CONDITIONS. B. REMOVE SEDIMENT ACCUMULATION ONCE DEPTH EXCEEDS 6 INCHES. 4. INSTALL COIR LOG, ROCK OR STRAW BALE CHECK DAMS EVERY 100 FEET ON CENTER ALONG ALL DRAINAGE INTERCEPTOR DITCHES. 5. EROSION CONTROL MATERIALS ARE TO BE STOCKPILED ON SITE PRIOR TO ANY SITE ACTIVITY. 6. AT STORM EVENT, NO ACTIVITY WILL OCCUR ON SITE, EXCEPT WORK ON EROSION CONTROL. MAINTENANCE 1. MAINTENANCE AND REPAIR OF EACH TEMPORARY AND PERMANENT EROSION AND SEDIMENT CONTROL SUP SHALL BE CONDUCTED AS NEEDED TO ENSURE DESIRED FUNCTION 2. VISUAL MONITORING OF ALL BMPS INSTALLED WILL BE CONDUCTED AT LEAST ONCE EVERY CALENDAR WEEK AND WITHIN 24 HOURS OF ANY STORMWATER OR NON-STORUWA TER DISCHARGE FROM THE SITE. IF THE SITE BECOMES INACTIVE AND IS TEMPORARY STABILIZED, THE INSPECTION FREQUENCY MAY BE REDUCED TO ONCE EVERY CALENDAR MONTH. 3. PERMANENT BMPS INSTALLED FOR THE CONTINUED USE OF STORMWATER CONTROL SHALL BE EXAMINED AND RESTORED TO FULL OPERATING CONDITION. IF SEDIMENT ENTERS THESE BMPS, THE SED/UENT SHALL BE REMOVED. SURVEYED: SCALE: ROBERT WEST HORIZONTAL- r oiss �issi DESIGNED: GINA BROOKS DRAWN: DA VV VAUGHN ONE INCH DATU M CHECKED: AT FULL SCALE GINA BROOKS IF NOT ONE INCH NO. REVISION BY DATE AP P R APPROVED: SCALE ACCORDINGLY GINA BROOKS R_4fjjnz� CITY OF RENTON Planning/Building/Public Works Dept. CONSTRUCTION SEQUENCE O SCHEDULE AND ATTEND A PRE -CONSTRUCTION CONFERENCE WITH THE CITY OF RENTON. 20 FLAG THE L/M/TS OF CLEARING, INSTALL F/L TER FABRIC FENCE WHERE SHOWN ON PLANS. INSTALL EITHER 42" ORANGE SAFETY FENCE OR F/L TER FABRIC FENCE ALONG ALL OTHER LIMITS OF CLEARING WHERE FIL TER FABRIC FENCE /5 NOT DEL/NEA TED. 30 CONSTRUCT THE TEMPORARY ROCK LINED CONSTRUCTION ENTRANCE. 40 INSTALL CA TCH BAS/N INSERTS ON EX/STING CA TCH BASINS AS DESIGNA TED ON SHEET C2. 01 O5 CONTRACTOR SHALL CONTACT THE CITY OF RENTON TO SCHEDULE A SITE INSPECTION. O6 BEGIN CLEARING AND GRADING UNTIL S/TEIS AT SUBGRADE. INSTALL DRYWELL. INSTALL UTILITIES. INSTALL CATCH BASIN INSERTS ON ALL NEWL Y CONSTRUCTED CBS. HYDROSEED AS SOON AS PRACTICAL. DRAINAGE SHALL NOT ENTER DRYWELL UNTIL SITE HAS BEEN STAB/L/ZED. O7 CONSTRUCT BUILDING. O8 STAB/L/ZE ALL AREAS ONCE FINAL GRADES ARE ESTABLISHED BY SUITABLE APPLICATION OF BMPS BY HYDROSEED, SOD, OR SIMILAR METHOD. O9 REMOVE EROSION CONTROL FACILITIES EXCEPT INLET F/L TERS. (ONL Y WHEN APPROVED BY CITY INSPECTOR) 10 PAVE ROADWAYS. INSTALL LANDSCAPING. 11 REMOVE CATCH BAS/N INSERTS WHEN THE POTENTIAL FOR ON -SITE EROSION HAS PASSED. 12 CLEAN STORM SYSTEM PRIOR TO USE. DO NOT FLUSH CLEANING WATER DOWNSTREAM. REMOVE PLUG BETWEEN CB3 AND DRYWELL. 13 TEMPORARY BMP'S CAN BE REMOVED ONL Y AFTER PROJECT IS COMPLETE AND RISK OF SIL T LADEN WA TER LEA VING THE S/TE HAS PASSED OR WITHIN 30 DAYS AFTER FINAL S/TE 5TABLIZATION. WET WEA THER CONSTRUCTION NOTE.- ALL PROJECTS WORKING UNDER A DRY SEASON TESC MANAGEMENT PLAN SHALL BE SUBSTANTIALL Y COMPLETE BY SEPTEMBER 30TH TO A VOID IMPLEMENTA TION OF RA/NY SEASON CONSTRUCTION REQUIREMENTS. PROJECTS THA T WILL NOT BE SUBS TANTIALL Y COMPLETED BY SEPTEMBER 30TH SHALL SUBMIT A SEASONAL SUSPENSION PLAN AND/OR WET WEATHER PLAN PREPARED /N ACCORDANCE W/TH THE GENERAL STANDARDS FOR RAINY SEASON CLEARING / GRADING, FOR APPROVAL BY THE CITY OF RENTON. AN APPROVED PLAN MUST BE AVAILABLE BY SEPTEMBER 1ST. ALLOW 7 WORKING DAYS FOR EACH REVIEW PERIOD. THE APPROVED PLAN MUST BE IMPLEMENTED BY SEPTEMBER 15TH. IF NO PLAN HAS BEEN APPROVED BY SEPTEMBER 1ST, THEN STOP WORK AND SECURE THE SITE AGAINST EROSION, NO FURTHER WORK WILL BE PERMITTED UNTIL MAY 1ST MEN THE DRY SEASON RETURNS. DUST CONTROL WHEN EXPOSED SOIL SURFACES ARE EXPOSED TO THE POINT THAT WIND TRANSPORT IS POSSIBLE, THE EXPOSED SOILS SHALL BE SPRA YED UNTIL WET, BUT RUNOFF SHALL NOT BE GENERA TED BY SPRA PING. DEWA TERING CONTROL CLEAN, NON -TURBID DEWATERING WATER WILL NOT BE ROUTED THROUGH STORMWATER SEDIMENT PONDS, AND IMLL BE DISCHARGED TO SYSTEMS TRIBUTARY TO THE RECE/V/NG WATERS OF THE STATE IN A MANNER THAT DOES NOT CAUSE EROSION, FLOOD/NG, OR A VIOLATION OF STATE WATER QUALITY STANDARDS IN THE RECEIVING WATER. ANY RUNOFF GENERA TED BY DEWA TERING SHALL BE TREA TED BY DISCHARGE THROUGH THE SIL T FENCE. HIGHL Y TURBID DEW,4 TERING WA TER FROM SOILS KNOWN OR SUSPECTED TO BE CON TAMINA TED, OR FROM USE OF CONSTRUCTION EQUIPMENT, WILL REQUIRE ADD/TIONAL MONITORING AND TREA TMENT AS REQUIRED FOR THE SPECIFIC POLL UTANTS BASED ON THE RECEI VING WA TERS INTO WHICH THE DISCHARGE IS OCCURRING. IF DEWA TERING OCCURS FROM AREAS WHERE THE WA TER HAS COME INTO CONTACT W/TH NEW CONCRETE, THE pH OF THE WATER MUST BE MONITORED AND MUST BE NEUTRALIZED PRIOR TO DISCHARGE. SUCH MONITORING /S THE RESPONSIBILITY OF THE CONTRACTOR. A DEWATER/NG PLAN MUST BE SUBMITTED AND APPROVED BY THE CITY OF RENTON PRIOR TO DEW,47ERING ACTIVITIES. GENERAL STOC`(P/LENO TES 1. STOCKPILE AREAS TO BE COVERED WITH PLASTIC WHEN NOT IN USE. PLASTIC COVERING IS TO BE HELD IN PLACE BY A MIN/MUM OF 10 LB. SAND BAGS PLACED EVERY 15 FEET ALONG THE EDGE AND ACROSS THE PILE. STOCKPILE HEIGHT NOT TO EXCEED 8 FEET. 2. STORAGE OF CONSTRUCTION MATERIALS AND WASTES WILL BE STORED WITHIN THE DESIGNATED STOCKPILE AREAS. THIS T.E.S.C. PLANAPPLIES TO THE DRYSEA SON ONL Y. CIVIL ENGINEERING Pz LANDSCAPE ARCHITECTURE W PLANNING DESIGN SURVEYING "11111I c4w �O W CORE JOB NO 18227 V 12100 NE 195th St, Suite 300 Bothell, Washington 98017 425.885.7877 W 2/3/23 (DESIGN ONL`r) Q IN COMPLIANCE WITH CITY OF RENTON STANDARDS Q v rW^ 1 ;, DATE: KIDDIE RESEARCH DA YCARE CENTER MAR. 2020 %4% 3123 NE SUNSET BL VD nELDBOOK: RENTON, WA 98056 PAGE: O DRAWING NO: C2.31 EROSION AND SEDIMENT CONTROL NOTES SHEEP: 5 OF: 21