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Home My WebLink AboutSWP2703529.4Cy) N LO M C\I Ili w C � c z W C) W w 0 0 0 0 0 W Q W_ _z Q r C� W Q W J EROSION CONTROL NOTES: 1. BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS, A PRE -CONSTRUCTION CONFERENCE MUST BE HELD WITH THE CITY OF RENTON, PUBLIC WORKS DESIGN ENGINEER. 2. ALL LIMITS OF CLEARING AND AREAS OF VEGETATION PRESERVATION AS PRESCRIBED ON THE PLAN(S) SHALL BE CLEARLY FLAGGED IN THE FIELD AND OBSERVED DURING CONSTRUCTION. 3. ALL REQUIRED SEDIMENTATION/EROSION CONTROL FACILITIES MUST BE CONSTRUCTED AND IN OPERATION PRIOR TO LAND CLEARING AND/OR CONSTRUCTION TO ENSURE THAT SEDIMENT LADEN WATER DOES NOT ENTER THE NATURAL DRAINAGE SYSTEM, JACKING PITS OR RECEIVING PITS. ALL EROSION AND SEDIMENT FACILITIES 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. THE IMPLEMENTATION, MAINTENANCE, REPLACEMENT AND ADDITIONS TO EROSION/SEDIMENTATION CONTROL SYSTEMS SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR. 4. THE EROSION AND SEDIMENTATION CONTROL SYSTEMS DEPICTED IN THESE DRAWINGS ARE INTENDED TO BE MINIMUM REQUIREMENTS TO MEET ANTICIPATED SITE CONDITIONS. AS CONSTRUCTION PROGRESSES AND UNEXPECTED OR SEASONAL CONDITIONS DICTATE, THE CONTRACTOR SHALL ANTICIPATE THAT MORE EROSION AND SEDIMENTATION CONTROL FACILITIES WILL BE NECESSARY TO ENSURE COMPLETE SILTATION CONTROL ON THE PROJECT SITE. DURING THE COURSE OF CONSTRUCTION, IT SHALL BE THE OBLIGATION AND RESPONSIBILITY OF THE CONTRACTOR TO ADDRESS ANY NEW CONDITIONS THAT MAY BE CREATED BY THE ACTIVITIES AND TO PROVIDE ADDITIONAL FACILITIES, OVER AND ABOVE MINIMUM REQUIREMENTS, AS MAY BE NEEDED, TO PROTECT ADJACENT PROPERTIES AND WATER QUALITY OF THE RECEDING DRAINAGE SYSTEM. 5. DURING THE TIME PERIOD OF OCTOBER 1ST THROUGH APRIL 30TH, ALL PROJECT DISTURBED SOIL AREAS GREATER THAN 5,000 SQUARE FEET, THAT ARE TO BE LEFT UN -WORKED FOR MORE THAN 12 HOURS, SHALL BE COVERED BY MULCH, SODDING OR PLASTIC COVERING. 6. IN ANY AREA WHICH HAS BEEN STRIPPED OF VEGETATION AND WHERE NO FURTHER WORK IS ANTICIPATED FOR A PERIOD 30 DAYS OR MORE, ALL DISTURBED AREAS MUST BE IMMEDIATELY STABILIZED WITH MULCHING, GRASS PLANTING OR OTHER APPROVED EROSION CONTROL TREATMENT APPLICABLE TO THE TIME OF YEAR. GRASS SEEDING ALONE WILL BE ACCEPTABLE ONLY DURING THE MONTHS OF APRIL THROUGH SEPTEMBER, INCLUSIVE. 7. TEMPORARY STOCKPILES OF NON -CONTAMINATED SOIL ARE TO BE REMOVED BY THE END OF EACH WORKING DAY UNLESS OTHERWISE ALLOWED BY THE CITY. PROVIDE DUST PALLIATIVE AS REQUIRED. IF TEMPORARY STOCKPILES ARE ALLOWED BY THE CITY TO REMAIN BEYOND THE END OF THE WORK DAY, PROVIDE TEMPORARY COVER MEASURES, SUCH AS PLASTIC COVERING, AND TRIANGULAR SILT DIKE ALONG TOE OF TEMPORARY STOCKPILE IN ACCORDANCE WITH CITY REQUIREMENTS. EROSION CONTROL CONSTRUCTION SEQUENCE: 1. HOLD THE PRE -CONSTRUCTION CONFERENCE. 2. INSTALL PERIMETER PROTECTION AROUND EXCAVATIONS TESC BMPS BASED ON CONSTRUCTION! SEQUENCING. 3. PROVIDE, INSTALL, MAINTAIN, AND INSPECT EROSION CONTROL MEASURES IN ACCORDANCE WITH CITY OF RENTON STANDARDS, MANUFACTURER'S RECOMMENDATIONS, AND SPECIFICATIONS. 4. RELOCATE SURFACE WATER CONTROLS OR EROSION CONTROL MEASURES, OR INSTALL NEW MEASURES SO THAT AS SITE CONDITIONS CHANGE, THE EROSION AND SEDIMENT CONTROL IS ALWAYS IN ACCORDANCE WITH THE CITY OF RENTON EROSION AND SEDIMENT CONTROL STANDARDS. 5. COVER ALL AREAS THAT WILL BE UNWORKED AS REQUIRED WITH STRAW, WOOD FIBER MULCH, COMPOST, ` PLASTIC SHEETING, OR EQUIVALENT. 6. STABILIZE ALL AREAS WITHIN (7) DAYS OF REACHING FINAL GRADE. 7. UPON COMPLETION OF THE PROJECT, STABILIZE ALL DISTURBED AREAS AND -REMOVE TESC BMPS. DISTURBED AREAS SHALL BE STABILIZED TO MATCH THE TYPE OF SURFACING THAT EXISTED PRIOR TO PROJECT CONSTRUCTION. g,EY L. 00 r 8 3 4 � IONAL E��1 1019 39TH AVENUE SE, SUITE 100 PUYALLUP, WASHINGTON 98374 T.253.604.6600 F.253.604.6799 a z www.parametrix.com _j @m-mm- DEn FOE APPROVAL By'- ------ Date( _ DyI-- -------- -- Datei- By,---------------- Date .------ By'---------------- Date:-- --- NO. WET SEASON REQUIREMENTS (OCTOBER 1 TO APRIL 30): 1. THE ALLOWED TIME THAT A DISTURBED AREA MAY REMAIN UNWORKED WITHOUT COVER MEASURES IS REDUCED TO TWO CONSECUTIVE WORKING DAYS, RATHER THAN SEVEN. 2. STOCKPILES AND STEEP CUT AND FILL SLOPES ARE TO BE PROTECTED IF UNWORKED FOR MORE THAN 12 HOURS. 3. COVER MATERIALS SUFFICIENT TO COVER ALL DISTURBED AREAS SHALL BE STOCKPILED ON SITE. 4. ALL AREAS THAT ARE TO BE UNWORKED DURING THE WET SEASON SHALL BE SEEDED WITHIN ONE WEEK OF THE BEGINNING OF THE WET SEASON. 5. MULCH IS REQUIRED TO PROTECT ALL SEEDED AREAS. 6. FIFTY LINEAR FEET OF SILT FENCE (AND THE NECESSARY STAKES) PER ACRE OF DISTURBANCE MUST BE STOCKPILED ON SITE. 7. CONSTRUCTION ROAD AND PARKING LOT STABILIZATION ARE REQUIRED FOR ALL SITES UNLESS THE SITE IS UNDERLAIN BY COARSE -GRAINED SOIL. 8. SEDIMENT RETENTION IS REQUIRED UNLESS NO OFFSITE DISCHARGE IS ANTICIPATED FOR THE SPECIFIED DESIGN FLOW. 9. SURFACE WATER CONTROLS ARE REQUIRED UNLESS NO OFFSITE DISCHARGE IS ANTICIPATED FOR THE SPECIFIED DESIGN FLOW. 10. PHASING AND MORE CONSERVATIVE BMPS MUST BE EVALUATED FOR CONSTRUCTION ACTIVITY NEAR SURFACE WATERS. 1 1 . ANY RUNOFF GENERATED BY DEWATERING WILL BE REQUIRED TO DISCHARGE TO THE SANITARY SEWER (WITH APPROPRIATE DISCHARGE AUTHORIZATION), PORTABLE SAND FILTER SYSTEMS, OR HOLDING TANKS. 12. THE FREQUENCY OF MAINTENANCE REVIEW INCREASES FROM MONTHLY TO WEEKLY. MODEL TOXICS CONTROL ACT NOTES: 1. THE CONTRACTOR IS RESPONSIBLE FOR COMPLIANCE WITH ALL PLAN AND SPECIFICATION PROVISIONS RELATED TO MODEL TOXICS CONTROL ACT COMPLIANCE REGARDING HANDLING AND DISPOSAL OF CONTAMINATED MATERIALS (INCLUDING SOIL AND GROUNDWATER) ENCOUNTERED DURING CONSTRUCTION ON THE PROJECT SITE. ALL HANDLING AND DISPOSAL OF CONTAMINATED MATERIALS SHALL BE IN ACCORDANCE WITH SPECIFICATIONS. APPROVAL OF ANY STORAGE OR DISPOSAL OF SOIL OR GROUNDWATER ON THE SITE SHALL BE PROVIDED SOLELY BY THE CITY. 2. THE CONTRACTOR SHALL PROVIDE SPECIFIC HANDLING AND DISPOSAL PLANS FOR CONTAMINATED SOILS AND GROUNDWATER CONSISTENT WITH BID SPECIFICATIONS TO THE CITY OF RENTON CONSTRUCTION MANAGER AT LEAST TEN DAYS PRIOR TO CONSTRUCTION. REVISION D=352904 SURVEYED: SCALE: DESIGNED: AS SHOWN J. COOP DRAWN: K. TAYLOR ONE INCH CHEC AT FULL SCALE IF NOT ONE INCH BY DATE I APPR APPROVED:rm SCALE ACCORDINGLY GENERAL CONSTRUCTION SEQUENCING: 1. INSTALL TESC BMPS INCLUDING FENCING, BARRIERS, DELINEATION OF STAGING AREAS, SAW CUTTING, TEMPORARY SILT DIKES, AND INLET PROTECTION. TESC BMPS TO BE INSTALLED AT THE BEGINNING OF EACH PHASE. REMOVE TESC BMPS AT THE COMPLETION OF EACH PHASE IF NO LONGER NEEDED. PHASE 1 A, 113 AND 1 C 2. INSTALL DEWATERING SYSTEMS FOR JACKING FROM JACKING PIT 1 TO RECEIVING PIT 1. DISCHARGE DEWATERING WATER TO TEMPORARY STORAGE AND/OR TREATMENT UNITS IN STAGING AREA FOR TESTING PRIOR TO DISCHARGE TO SANITARY SEWER. REMOVE TEMPORARY FENCING AND BARRICADES WHERE INDICATED ON PLANS THAT ARE REQUIRED FOR INSTALLATION OF DEWATERING SYSTEM. 3. CONSTRUCT JACKING PIT 1 AND RECEIVING PIT 1, INSTALL CASING FROM JACKING PIT 1 TO RECEIVING PIT 1. 4. RESTORE SITE TRAFFIC CIRCULATION OVER CASING IN ACCORDANCE WITH CONSTRUCTION EASEMENT REQUIREMENTS. MAINTAIN DEWATERING SYSTEM FOR JACKING PIT 1 AND RECEIVING PIT 1 AS NEEDED. INSTALL OPEN CUT PORTIONS OF STORM DRAIN FOR PHASES _ 113 AND 1 C IN ACCORDANCE WITH GENERAL SEQUENCING ON SHEET C5. 5. INSTALL AND RELOCATE TEMPORARY CONSTRUCTION FENCING, SIGNING AND RESTORATION IN ACCORDANCE WITH SHEETS C4 AND C5. PHASE 2 6. INSTALL DEWATERING SYSTEMS FOR JACKING PIT 1 TO JACKING PIT 2. DISCHARGE DEWATERING WATER TO TEMPORARY STORAGE AND/OR TREATMENT UNITS IN STAGING AREA FOR TESTING PRIOR TO DISCHARGE TO SANITARY SEWER. REMOVE TEMPORARY FENCING AND BARRICADES WHERE INDICATED ON PLANS THAT ARE REQUIRED FOR INSTALLATION OF DEWATERING SYSTEM. 7. CONSTRUCT JACKING PIT 2 AND INSTALL CASING FROM JACKING PIT 1 TO JACKING PIT 2. 8. RESTORE SITE TRAFFIC CIRCULATION OVER CASING IN ACCORDANCE WITH CONSTRUCTION EASEMENT REQUIREMENTS. MAINTAIN DEWATERING SYSTEM FOR JACKING PITS 1 AND 2 AS NEEDED. 9. INSTALL AND RELOCATE TEMPORARY CONSTRUCTION FENCING AND SIGNING IN ACCORDANCE WITH SHEETS C4 AND C5.. PHASE 3 10ANSTALL DEWATERING SYSTEMS FOR JACKING FROM JACKING PIT 2 TO RECEIVING PIT 2. DISCHARGE DEWATERING WATER TO TEMPORARY STORAGE AND/OR TREATMENT UNITS IN STAGING AREA FOR TESTING PRIOR TO DISCHARGE TO SANITARY SEWER. REMOVE TEMPORARY FENCING AND BARRICADES WHERE INDICATED ON PLANS THAT ARE REQUIRED FOR INSTALLATION OF DEWATERING SYSTEM. 1 1 . CONSTRUCT RECEIVING PIT 2 AND INSTALL CASING FROM JACKING PIT 2 TO RECEIVING PIT 2. 1 2. RESTORE SITE TRAFFIC CIRCULATION OVER CASING IN ACCORDANCE WITH CONSTRUCTION EASEMENT REQUIREMENTS. MAINTAIN DEWATERING SYSTEM FOR JACKING PIT 2 AND RECEIVING PIT 2 AS NEEDED. 13.INSTALL AND RELOCATE TEMPORARY CONSTRUCTION FENCING AND SIGNING IN ACCORDANCE WITH SHEET C4. PHASE 4 14ANSTALL CARRIER PIPE FROM JACKING PIT 1 THROUGH RECEIVING PIT 2. PHASE 5 15.INSTALL TEMPORARY BYPASS PUMPING SYSTEM IN VICINITY OF CB-8. 1 6. CONSTRUCT TEMPORARY WATER SERVICE IN VICINITY OF STA 15+10. 17. CONSTRUCT DRAINAGE SYSTEM FROM CB-6 TO CB-8 (UPSTREAM OF RECEIVING PIT 2). 18. CONSTRUCT WATER LINE RELOCATION. 19. COMPLETE ALL TESTING, PLUG/ABANDON STORM DRAINS WHERE SHOWN, AND REMOVE TEMPORARY BYPASS PUMPING SYSTEM. 20. REMOVE OR ABANDON ALL SHORING IN ACCORDANCE WITH THE SHORING PLAN. 21 . BACKFILL REMAINING EXCAVATIONS, RESTORE SITE, REMOVE TESC BMPS, REMOVE DEWATERING SYSTEM AND DEMOBILIZE FROM SITE. 22.WORK SEQUENCING IN PHASES 2 THROUGH 5 MAY OVERLAP AS NEEDED BASED ON REQUIRED PROJECT COMPLETION PROVIDED THAT THE SYSTEM IS INSTALLED TO THE SATISFACTION OF THE CITY, DATE: VERTICAL: NAVD 1988 HORIZONTAL- LAKE AVE S / RAINIER AVE S J U N E 2011 HORIZONTAL-HORIZONTAL-NAD ,sB3i,ss, .� ` }- CITY O F STORM SYSTEM P GLDBOOK: RENTON EROSION CONTROL, EROSION CONTROL SEQUENCE, DRAWING NO: DATUM Planning/Building/Public Works Dept. WET SEASON REQUIREMENTS, MODEL TOXICS CONTROL ACT G4 NOTES, AND POSSIBLE CONSTRUCTION SEQUENCE SHEET: 4 OF: 1 1 D 352904