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Home My WebLink AboutT-343080RM II M� 0 ? Y GENERAL NOTES • AN EROSION CONTROL SYSTEM USING THE MINIMUM BMP'S SHALL BE INSTALLED PRIOR TO ANY CLEARING OR GRADING. ADDITIONAL EROSION CONTROLS MAY BE REQUIRED BY THE ENGINEER AS WEATHER AND FIELD CONDITIONS DICTATE. • LOCATIONS FOR STOCKPILED MATERIAL MUST BE APPROVED BY THE ENGINEER /PROJECT MANAGER. at THE CONTRACTOR SHALL BE RESPONSIBLE FOR FULL COMPLIANCE WITH THE WASHINGTON STATE "DROPPING LOAD OR OTHER MATERIALS — COVERING" (RCW 46.61.655.3/4). SPILL PREVENTION CONTROL & COUNTERMEASURES PLAN THE SPILL PREVENTION CONTROL & COUNTERMEASURES PLAN WILL CONTAIN A TEMPORARY EROSION & SEDIMENT CONTROL PLAN AND WRITTEN CONSTRUCTION SEQUENCE DESCRIBING HOW CONSTRUCTION AND EROSION CONTROL WILL PROGRESS, RESTORATION BY SECTION, AND PROTECTION OF STOCKPILE AREAS IS REQUIRED. THE CONSTRUCTION SEQUENCE WILL BE REVIEWED WITH THE ENGINEER AT THE PRECONSTRUCTION MEETING. THE CONTRACTOR SHALL ALSO DEVELOP A "SPILL PREVENTION CONTROL AND COUNTERMEASURES" PLAN AND IDENTIFY PERSON(S) RESPONSIBLE FOR IMPLEMENTING THE PLAN IF A SPILL OF A DANGEROUS OR HAZARDOUS WASTE SHOULD OCCUR. TEMPORARY EROSION CONTROL EXPOSED SOIL SHALL BE COVERED AT THE END OF THE CONSTRUCTION WEEK AND ALSO AT THE POSSIBLE THREAT OF RAIN. THE CONTRACTOR SHALL HAVE A SUFFICIENT AMOUNT OF MATERIALS FOR PLASTIC COVERING TO PROVIDE EROSION CONTROL FOR THE SITE AND EMERGENCY PURPOSES. SEDIMENT TRAPPING DEWATERING DEVICE, IF NEEDED, SHALL BE DISCHARGED WHERE SEDIMENT, AND /OR OTHER POLLUTANTS, WILL NOT ENTER THE DRAINAGE SYSTEM. PER DEPARTMENT OF ECOLOGY GUIDELINES, WASTEWATER FROM PORTLAND CEMENT CONCRETE, MASONRY, AND ASPHALT CONCRETE CUTTING OPERATIONS SHALL NOT BE DISCHARGED TO STORM DRAINAGE SYSTEMS OR SURFACE WATERS. SEDIMENT AND GRIT CONTAMINATION FROM CUTTING OPERATIONS SHALL BE PREVENTED FROM ENTERING THE STORM DRAINAGE, SYSTEM OR SURFACE WATERS. BMP MAINTENANCE ALL TEMPORARY AND PERMANENT EROSION AND SEDIMENTATION BMP'S SHALL BE INSPECTED DAILY AND SUBSEQUENTLY MAINTAINED PER THE WASHINGTON STATE STORMWATER MANAGEMENT MANUAL FOR THE PUGET SOUND BASIN AND THE DEVELOPMENT STANDARDS SO THAT THEY FUNCTION AS INTENDED UNTIL THE SITE HAS BEEN PERMANENTLY STABILIZED, AND THE POTENTIAL FOR ON —SITE EROSION HAS PASSED. AT NO TIME SHALL MORE THAN 0.5 FEET OF SEDIMENT BE ALLOWED TO ACCUMULATE WITHIN A CATCH BASIN. ALL CATCH BASINS AND CONVEYANCE LINES SHALL BE CLEANED JUST PRIOR TO FINAL INSPECTION APPROVAL. THE CLEANING OPERATION SHALL NOT FLUSH SEDIMENT —LADEN WATER INTO THE DOWNSTREAM SYSTEM. DUST CONTROL PREVENTAITVE MEASURES TO MINIMIZE THE WIND TRANSPORT OF SOIL SHALL BE TAKEN WHEN A TRAFFIC HAZARD MAY BE CREATED, WHEN SEDIMENT TRANSPORTED BY THE WIND IS LIKELY TO BE DEPOSITED IN DRAINAGE WAYS OR WATER RESOURCES, OR WHEN DIRECTED BY THE ENGINEER. WHEN USING WATER FOR DUST CONTROL, SPRAY UN11L SOIL IS WET, BUT RUNOFF IS NOT INITIATED. PAVED STREETS SHALL BE SWEPT DAILY FOLLOWING CONSTRUCTION ACTIVITIES. PERMANENT EROSION CONTROL ALL AREAS DISTURBED BY CONSTRUCTION SHALL BE STABILIZED BY LANDSCAPING AND REVEGETATION (SEE PLANS). UNDERGROUND UTILITY LINES THE PROJECT SHALL BE SEQUENCED SO THAT EXISTING WATER & SEWER SYSTEMS REMAIN ACTIVE UNTIL THE NEW SYSTEMS ARE IN PLACE AND ACCEPTED BY THE CITY. WHEN CONSTRUCTING UNDERGROUND UTILITY LINES, NO MORE TRENCH SHALL BE OPENED THAN CAN BE CLOSED OR COVERED IN A SINGLE DAY. EXCAVATED MATERIAL SHALL BE PLACED ON THE DOWNHILL SIDE OF THE TRENCH WHERE CONSISTENT WITH THE SAFETY AND SPACE CONSIDERATIONS. TEMPORARY TRENCH DEWATERING DEVICES SHALL NOT BE DISCHARGED INTO SURFACE WATERS OR TO THE STORM DRAIN SYSTEM WITHOUT PRIOR TREATMENT. TRENCHES SHALL BE CLOSED OR COVERED AT THE END OF EACH DAY UNLESS OTHERWISE ALLOWED BY THE ENGINEER. FOR UTILITY TRENCHING AND OTHER CLEARING AND GRADING WORK IN STREET RIGHTS —OF —WAY, EROSION AND SEDIMENTATION CONTROL BMP'S, PER THE STORMWATER MANAGEMENT MANUAL FOR THE PUGET SOUND BASIN, AND STANDARD DETAILS SHALL BE USED. THE BMP'S SHALL BE MAINTAINED DAILY. ADAPTOR SKIRT TRIM TO WITHIN GEOTEXTILE c I RC I NOTES 1. PLACE AT DOWN GRADIENT EDGE OF AREAS TO BE CLEARED TO PROTECT STREAM & WETLANDS OUTSIDE OF GRADING LIMITS. 2. CONTRACTOR SHALL REMOVE ACCUMULATED SEDIMENT FROM FENCE WHEN IT REACHES Ys OF FENCE HEIGHT. 6' MAX ACCUMULATION NOTES 1. INSERT SHALL BE INSTALLED ON ALL EXISTING CATCH BASINS PRIOR TO CLEARING AND GRADING ACTIVITY, AND UPON PLACEMENT OF A NEW CATCH BASIN. 2. SEDIMENT SHALL BE REMOVED FROM THE UNIT WHEN IT BECOMES HALF FULL . 3. SEDIMENT REMOVAL SHALL BE ACCOMPLISHED BY REMOVING THE INSERT, EMPTYING, AND RE— INSERTING IT INTO THE CATCH BASIN. 4. CATCH BASIN INSERTS SHALL BE USED FOR TEMPORARY STORMWATER TREATMENT DURING CONSTRUCTION. CONTRACTOR SHALL INSPECT CATCH BASIN INSERTS WEEKLY AND PROVIDE MAINTENANCE AS NEEDED. 5. CATCH BASIN INSERTS DO NOT MEET SPILL CONTAINMENT REQUIREMENTS AND CANNOT BE USED AS SUCH. METHODS OF POTENTIAL SPILL — CONTAINMENT SHALL BE ADDRESSED IN A SPILL PREVENTION CONTROL AND COUNTERMEASURES PLAN. 6. THE "TEMPORARY EROSION AND SEDIMENT CONTROL PLAN" AND THE "SPILL PREVENTION CONTROL AND COUNTERMEASURES PLAN" IS TO BE PREPARED BY THE CONTRACTOR PER THE SPECIAL PROVISIONS. CATCH BASIN INLET PROTECTION INSERT NTS 8" MIN. FILTER FABRIC MATERIAL PROVIDE 3/4" TO 1t/2" GRAVEL BACKFILL GRUB SURFACE FOR TIGHT SEAL ALTERNATE: STEEL FENCE POSTS ELEVATION SILT FENCE NTS SECTION FILTER FABRIC MATERIAL 36" WIDE ROLLS USE STAPLES OR WIRE RINGS TO ATTACH FABRIC TO POST SEAL FILTER MATERIAL AGAINST GROUND SURFACE TERMINATE AT LEVEL AREA. FOLD UNDER 4" & STAPLE AT 12" INTERVALS — 10' MAX SEDIMENT TRAPPING AREA TYP 10" TO 12" DIAM WATTLE x z a M M Rn N z RCO NOTES 1. INSTALL WATTLES ALONG CONTOURS (SEE STANDARD SPECIFICATION 8- 01.3(10)). 2, WATTLES SHALL BE INSPECTED REGULARLY, AND IMMEDIATELY AFTER A RUNOFF PRODUCING RAINFALL, TO ENSURE THEY REMAIN THOROUGHLY ENTRENCHED AND IN CONTACT WITH THE SOIL. ELEVATION VIEW ASPHALT PATH ASPHALT PI 3/4" BY 3/4" WOODEN STAKE STAKE AT EACH END AND 4' MAX O.C. ALONG ENTIRE LENGTH 3. PERFORM MAINTENANCE IN ACCORDANCE WITH STANDARD SPECIFICATION 8- 01.3(15). 4. INSTALL WATTLES SNUGLY INTO THE 4" MINIMUM DEPTH TRENCH. ABUT ADJACENT WATTLES TIGHTLY, END TO END, WITHOUT OVERLAPPING THE ENDS. 5. PILOT HOLES MAY BE DRIVEN THROUGH THE WATTLE AND INTO THE SOIL, WHEN SOIL CONDITIONS REQUIRE. 6. REMOVE WATTLES AND HYDROSEED PRIOR TO SUBSTANTIAL COMPLETION. WATTLE INSTALLATION DETAIL NTS TOE IN SHEETING IN 4" X 6" TRENCH A MIN OF 8' SETBACK FROM TOP OF SLOPE. BACKFILL WITH WASHED ROCK CONVEY RUNOFF TO APPROVED LOCATION PROVIDE ENERGY DISSIPATION AT TOE WHEN NEEDED 3' MIN PLASTIC COVERING NTS NOTES 1. TIRES, SANDBAGS, OR EQUIVALENT MAY BE USED TO WEIGHT PLASTIC SHEETING. 2. SEAMS BETWEEN SHEETS MUST OVERLAP A MINIMUM OF 12" AND BE WEIGHTED OR TAPED. 3. PLASTIC SHEETING SHALL HAVE A MINIMUM THICKNESS OF 6 MIL. 4. DUE TO RAPID RUNOFF CAUSED BY PLASTIC SHEETING, THIS METHOD SHALL NOT BE USED UPSLOPE OF AREAS THAT MIGHT BE ADVERSELY IMPACTED BY CONCENTRATED RUNOFF. 5. BERM OR SWALE AT TOP OF SLOPE AS REQUIRED BY CITY. 6. DITCH AT BASE OF SLOPE AS REQUIRED BY CITY. DISCHARGE TO APPROVED LOCATION. T- 343080 z `m M a , m O i T; ti a a � .P- o W N O z 714 < -17 y094'4�Ow scO8y2 y _ o % AP 20320 y� .��, rsre ,¢¢' SURVEYED: KPG DRAWN BY: SOD /KAT DESIGN ev: JLF CHECK BV: NM PROJ MGR: JF FILE: 0655DTESCDETOt.dwg Kp� 7539Th ArenueN 2502 Jefiersan AYenue BID Seattle, WA 98109 Tacoma, WA 98402 DOCUMENTS 12osl2ss -lsaa 12531sv -oi2o �� CITY OF RENTON � Public Works DepaRment APPROV D FOR CONSTRUCTION / � - � (�- RAINIER AVENUES (SR 167) S GRADY WAY TO S 2ND ST SITE PREPARATION & TESC DETAILS DRAWING NO. HO PROJECT NO. TED403430 FED AID NO. - CM0167(048) DATE: NOV 2011 NUMBER REVISION DESCRIPTION BY APP. DATE z `m M a , m O i T; ti a a � .P- o W N O z