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HomeMy WebLinkAboutW-382403w a z cLI w 0 0 of a `71- GENERAL NOTES N 00 Cy) 1. ALL WORK MATERIAL SHALL BE IN CONFORMANCE WITH THE LATEST STANDARDS AND [\ SPECIFICATIONS OF THE CITY OF RENTON PUBLIC WORKS DEPARTMENT AND THE 2016 EDITION OF N THE WSDOT/APWA STANDARDS AND SPECIFICATIONS, AS APPROVED AND MODIFIED BY THE CITY OF RENTON IN THE RENTON STANDARD PLANS & SPECIFICATIONS. SOME STANDARD DETAIL DRAWINGS MAY HAVE BEEN MODIFIED FOR THIS CONTRACT. THE CONTRACTOR SHALL REFER TO DETAIL DRAWINGS INCLUDED IN THE CONTRACT DOCUMENTS. A SET OF APPROVED PLANS SHALL BE KEPT ON SITE AT ALL TIMES DURING CONSTRUCTION. 2. ALL WORK SHALL BE SUBJECT TO INSPECTION BY THE CITY ENGINEER OR DESIGNATED REPRESENTATIVE. J. THE CONTRACTOR SHALL COMPLY WITH ALL PERMITS AND ALL OTHER REQUIREMENTS BY THE CITY OF RENTON. SEE APPROVED PERMITS AND PERMIT REQUIREMENTS IN THE PROJECT SPECIFICATIONS. 4. PRIOR TO BEGINNING CONSTRUCTION, THE CONTRACTOR SHALL MEET WITH THE CITY ENGINEER C) FOR A PRE -CONSTRUCTION MEETING. AN APPROVED TRAFFIC CONTROL PLAN IS REQUIRED TO BE w SUBMITTED AT THE PRE -CONSTRUCTION MEETING. ANY MODIFICATIONS TO THE APPROVED TRAFFIC CONTROL PLAN SHALL BE RESUBMITTED AND APPROVED PRIOR TO IMPLEMENTATION. 0 rr 5. A STAGING AREA HAS BEEN MADE AVAILABLE TO THE CONTRACTOR FOR THIS PROJECT. ALL TESC IZ REQUIREMENTS APPLY TO THE CONTRACTOR'S STAGING AREA. 6. LOCATIONS OF EXISTING UTILITIES ARE APPROXIMATE. UTILITY LOCATIONS ARE SHOWN BASED ON A z COMBINATION OF ONE OR MORE OF THE FOLLOWING: OBSERVATIONS OF SURFACE FEATURES, Ljj PAINT MARKS APPLIED BY AN UNDERGROUND UTILITY LOCATING SERVICE, CCTV-1/VG OF SOME STORM AND SEWER MAINS TO LOCATE SERVICE LATERALS, AND RECORD SCHEMATIC DRAWINGS. w UTILITIES SHOWN IN THESE DRAWINGS ARE FOR THE PURPOSES OF ASSISTING THE CONTRACTOR WITH LOCATING UTILITIES. THE CITY OF RENTON ASSUMES NO LIABILITY FOR THE ACCURACY OF QTHE RECORD INFORMATION. J 7. CONTRACTOR SHALL FIELD LOCATE ALL UTILITIES WITHIN PROPOSED EXCAVATION LIMITS. CONTACT 0- UNDERGROUND UTILITY LOCATE SERVICE 1-800-424-5555 (OR 81 1) A MINIMUM OF 72 HOURS W PRIOR TO ANY EXCAVATION TO OBTAIN ON -SITE UTILITY LOCATIONS. rr 8. CONTRACTOR SHALL POTHOLE UNDERGROUND GAS, WATER, SERVICE CONNECTIONS, AND OTHER UNDERGROUND UTILITIES WHERE POTENTIAL FOR CONFLICTS EXIST, WHERE DIRECTED BY THESE PLANS, OR WHERE DIRECTED BY ENGINEER. POTHOLING SHOULD BE DONE AT LEAST TEN (10) J WORKING DAYS IN ADVANCE OF WORK IN THE AREA. PRECAUTIONS AND REMEDIAL MEASURES SHALL BE TAKEN AS REQUIRED TO PROTECT PERSONS AND PROPERTY AND TO AVOID DISRUPTION OF SERVICE. UNLESS OTHERWISE NOTED, PROTECT ALL UTILITIES FROM DAMAGE WHICH SHALL INCLUDE PROVIDING TEMPORARY SUPPORT SYSTEMS AND SHORING AROUND UTILITIES DURING J EXCAVATION. IF AN EXISTING PRIVATE UTILITY CONFLICTS WITH PROPOSED IMPROVEMENTS, J COORDINATE THE RELOCATION OF THE PRIVATE UTILITY WITH THE UTILITY OWNER UNLESS NOTED = OTHERWISE OR DIRECTED BY ENGINEER. z 9. POTHOLING REQUESTED AT SPECIFIC LOCATIONS BY THE CONTRACT DOCUMENTS OR DIRECTED BY O THE ENGINEER SHALL BE PAID FOR BY "SITE SPECIFIC POTHOLING. " ALL OTHER POTHOLING WORK SHALL BE CONSIDERED INCIDENTAL. SEE SECTION 1-07. 17 IN THE SPECIAL PROVISIONS. z 10. IF EXISTING GAS MAINS ARE IN CONFLICT WITH NEW UTILITIES, THE CITY WILL PROVIDE NEW PROFILE GRADES FOR THE STORM OR WASTEWATER PIPING. ADJUSTMENT OF THE PIPE ALIGNMENT uj SHALL BE AT NO ADDITIONAL COST TO THE CITY. IF THE EXISTING GAS MAIN (OR SERVICE) IS IN CONFLICT WITH NEW STORM OR WASTEWATER AND THE UTILITY PROFILE CANNOT BE ADJUSTED, CONTRACTOR SHALL COORDINATE WITH PSE FOR GAS RELOCATION (CONTACT PSE GAS REPRESENTATIVE GLENN HELTON AT 425-559-4647). ALL COST FOR COORDINATION WITH PSE FOR GAS SERVICE RELOCATION SHALL BE INCIDENTAL TO UTILITY CONSTRUCTION. IT IS ALSO NOTED THAT PSE MAY HAVE PERFORMED SOME RELOCATIONS IN ANTICIPATION OF THIS PROJECT AND CONTRACTOR SHALL COORDINATE WITH PSE REPRESENTATIVE TO DETERMINE ALL NEW GAS LOCATIONS. 11. STATIONS AND OFFSETS FOLLOW STREET R.O.W. CENTERLINE ALIGNMENTS DEFINED ON SURVEY. 12. CONTRACTOR SHALL REPLACE SURVEY MONUMENTS WHERE SHOWN ON DRAWINGS IN ACCORDANCE WITH SECTION 1-05.4 OF THE SPECIAL PROVISIONS AND CITY OF RENTON SURVEY STANDARDS. ANY MONUMENTS NOT SPECIFICALLY CALLED OUT AS TO BE REPLACED ON DRAWINGS SHALL BE REPLACED BY CONTRACTOR AT ITS OWN EXPENSE. 13. THE CONTRACTOR SHALL NOT LEAVE STOCKPILED TRENCH EXCAVATION MATERIAL ON CITY STREETS OUTSIDE OF WORK HOURS. 14. SITE CONSTRUCTION LIMITS (PRESERVATION LINES) COINCIDE WITH CITY RIGHT-OF-WAY UNLESS SHOWN OTHERWISE. 15. THE CONTRACTOR SHALL USE A VACUUM STREET SWEEPER TO REMOVE DUST AND DEBRIS FROM PAVEMENT AREA AS DIRECTED BY THE ENGINEER. FLUSHING OF STREETS SHALL NOT BE PERMITTED. 16. BEFORE COMMENCEMENT OF TRENCHING, THE CONTRACTOR SHALL PROVIDE A CATCH BASIN FILTER FOR ALL DOWNHILL STORM DRAIN INLETS AND CATCH BASINS. THE CONTRACTOR SHALL PERIODICALLY INSPECT THE CONDITION OF ALL FILTERS AND REPLACE AS NECESSARY. 17. PAVEMENT MARKINGS (E.G. LANE LINE BUTTONS OR PAINT STOP BARS, CROSSWALKS, ETC.) DAMMAGED OR REMOVED DURING CONSTRUCTION SHALL BE REPLACED IN KIND. 18. TEMPORARY RESTORATION OF TRENCHES FOR OVERNIGHT USE SHALL BE ACCOMPLISHED BY USING COLD MIX ASPHALT OR HMA. STEEL PLATES MAY BE USED OVERNIGHT TO COVER THE LAST SECTION OF TRENCH. STEEL PLATES MUST BE PINNED DOWN AND ASPHALT RAMPS/WEDGES MUST BE PLACED AROUND THE PLATES. STEEL PLATES SHALL NOT BE USED ON STEEP GRADES OR WHERE STEEL PLATES PRESENT A ROADWAY HAZARD. 19. THE CONTRACTOR SHALL KEEP PROJECT AREA OPEN TO TRAFFIC AT ALL TIMES, UNLESS APPROVED BY THE CITY OF RENTON. 20. CONSTRUCTION WORK SHALL BE FROM 7:00 AM TO 5:00 PM. 21. CONTRACTOR SHALL PROVIDE NOTICE TO AFFECTED RESIDENTS A MINIMUM OF 24 HOURS IN ADVANCE WHEN VEHICULAR ACCESS TO THEIR RESIDENCE WILL BE RESTRICTED. ONE- CA L L REFER ��1 800-424-5PALL PRIOR dig. NG UTILITIES ARE SHOWN FOR ENCE ONLY. CONTRACTOR FIELD LOCATE ALL EXISTING ES A MINIMUM OF 72 HOURS TO CONSTRUCTION. WATER UTILITY GENERAL NOTES 1. ALL NEW WATER PIPE AND FITTINGS SHALL HAVE A FOAM PIPE PIG RUN THROUGH THEM BEFORE BEING FLUSHED, DISINFECTED, AND PRESSURE TESTED. THE CONTRACTOR SHALL NOTIFY THE CITY OF RENTON WATER MAINTENANCE DEPARTMENT TWO WEEKS BEFORE MAKING A CUT -IN CONNECTION TO AN EXISTING WATER MAIN AND 5 DAYS BEFORE MAKING A CONNECTION TO A NEWLY CUT -IN TEE AND VALVE(S) ON THE EXISTING MAIN. ALL PIPE AND FITTINGS NOT TO BE DISINFECTED IN PLACE SHALL BE SWABBED WITH 1% CHLORINE SOLUTION PRIOR TO INSTALLATION. 2. AFTER DISINFECTING THE WATERMAIN, DISPOSE OF CHLORINATED WATER BY DISCHARGING TO THE NEAREST OPERATING SANITARY SEWER. J. DEFLECT THE WATERMAIN ABOVE OR BELOW EXISTING UTILITIES AS REQUIRED TO MAINTAIN 3FT MINIMUM COVER, 12 IN. MINIMUM VERTICAL CLEARANCE BETWEEN UTILITIES UNLESS OTHERWISE SPECIFIED. 4. ALL FITTINGS SHALL BE BLOCKED PER CITY OF RENTON STANDARD DETAILS UNLESS OTHERWISE NOTED. STORM WATER UTILITY GENERAL NOTES 1. STORM SEWER LENGTHS ARE MEASURED BETWEEN CENTERS OF MANHOLES AND CATCH BASINS UNLESS OTHERWISE NOTED. PIPE SLOPES AND INVERT ELEVATIONS ARE MEASURED FROM FACE OF STRUCTURE AND MAY DIFFER FROM CENTER -OF -STRUCTURE MEASUREMENTS. 2. EXCEPT AS OTHERWISE NOTED, CATCH BASIN AND MANHOLE RIM ELEVATIONS GIVEN ARE APPROXIMATE. FINAL ELEVATIONS SHALL MATCH FINAL GRADE. J. USE CDF FOR BEDDING AND SACKFILLING AROUND EXISTING OR NEW UTILITIES WHERE STANDARD METHODS DO NOT PERMIT COMPACTION REQUIREMENTS TO BE MET AS SHOWN ON THE DWGS, OR AS DIRECTED BY ENGINEER. 4. WHERE NEW STORM IS DESIGNED PARALLEL TO AND AT AN ELEVATION HIGHER THAN ADJACENT SEWER MAIN, THERE IS A POTENTIAL FOR CONFLICT WITH ASSOCIATED SIDE SEWER SERVICES. THE PLANS IDENTIFY CERTAIN SIDE SEWERS FOR SITE SPECIFIC UTILITY POTHOLING. CONTRACTOR SHALL POTHOLE THESE SIDE SEWERS AND PROVIDE DEPTH TO THE ENGINEER 10 DAYS IN ADVANCE OF CONSTRUCTION IN THIS AREA. IF NO CONFLICT, CONTRACTOR SHALL PROTECT AND SUPPORT SIDE SEWER. ANY DAMAGE TO SIDE SEWER WILL BE AT CONTRACTOR'S EXPENSE. IF CONFLICT EXISTS, ENGINEER MAY ELECT TO CHANGE GRADE OF STORM TO AVOID CONFLICT AT NO ADDITIONAL COST TO THE CITY, OR RELOCATE SIDE SEWER SERVICE IN ACCORDANCE WITH THE 'RELOCATE SIDE SEWER" BID ITEM, AND DETAIL 1 ON DWG SW15. IF SEWER IS NOT POTHOLED AND IS IN CONFLICT RELOCATE PER DETAIL 1 ON DWG SW 15. 5. AS NOTED IN WATER DRAWINGS, EXISTING WATER MUST REMAIN ACTIVE UNTIL THE NEW WATER SYSTEM IS INSTALLED AND READY FOR OPERATION. THIS WILL AFFECT CONTRACTOR'S APPROACH TO STORMWATER SYSTEM IMPLEMENTATION AND SEQUENCING. WHERE NEW STORMWATER CANNOT BE INSTALLED DUE TO CONFLICT OR CLOSE PROXIMITY WITH EXISTING ACTIVE WATER MAINS OR HYDRANTS, CONTRACTOR SHALL EITHER INSTALL NEW WATER SUCH THAT THE EXISTING WATER CAN BE ABANDONED AND REMOVED, OR IF APPROVED BY THE CITY, SHALL ADJUST THE PROFILE OF THE STORM DRAIN INSTALLATION TO AVOID THE CONFLICT. IN EITHER CASE, THERE SHALL BE NO ADDITIONAL COST TO THE CITY. 6. WHEREVER NEW WATER SERVICES ARE INSTALLED IN ADVANCE OF NEW STORM, CONTRACTOR SHALL ENSURE THE DEPTH OF WATER SERVICE WILL NOT CONFLICT WITH NEW STORM. WHERE ACTIVE WATER SERVICES THAT HAVE NOT YET BEEN REPLACED ARE IN CONFLICT WITH THE NEW STORM, THEY SHALL BE RAISED OR LOWERED (BY EXPOSING MORE OF THE WATER SERVICE LINE TO ALLOW MORE VERTICAL DEFLECTION) OR SHALL HAVE A TEMPORARY SPLICE TO THE SERVICE LINE TO RAISE OR LOWER IT TO AVOID CONFLICT TEMPORARY WATER SERVICE RELOCATION INCLUDES SERVICE LINE AND CONNECTION FITTINGS AND SHALL BE INCIDENTAL TO OTHER PAYMENT ITEMS. CONTRACTOR SHALL COORDINATE WITH CITY OF RENTON WATER UTILITY ABOUT ANY RELOCATION OR MODIFICATION TO SERVICE LINES. 7. CONTRACTOR SHALL NOT ORDER PRECAST MANHOLES/CATCH BASINS UNTIL ALL POTENTIAL CONFLICTS THAT COULD AFFECT THE MANHOLES/CATCH BASINS HAVE BEEN POTHOLED TO CHECK FOR CONFLICT, AND THOSE CONFLICTS HAVE BEEN RESOLVED. 8. ALL STORM DRAINAGE PIPES SHALL HAVE WATERTIGHT JOINTS. 9. STATION/OFFSET LOCATION CALLOUTS AND RIM ELEVATIONS PROVIDED ARE AT THE CENTER OF THE DRAINAGE STRUCTURE. 10. EXISTING STORM DRAINAGE PIPES AND STRUCTURES SHALL BE ABANDONED AND FILLED WHERE INDICATED ON THE PLANS IN ACCORDANCE WITH SECTION 2-02.3(4) OF THE SPECIAL PROVISIONS FOR PIPES AND SECTION 7-05.3(2) OF THE STANDARD SPECIFICATIONS AND SPECIAL PROVISIONS FOR STRUCTURES. 11. STORM DRAIN PIPE SHALL BE CORRUGATED POLYETHYLENE PIPE (CPEP), POLYPROPYLENE PIPE (PPP), OR DUCTILE IRON (DI) AS SHOWN ON STORM PROFILES. 12. THE NEW STORM CROSSES (3) WATER MAINS OWNED BY SEATTLE PUBLIC UTILITIES (SPU). CONTRACTOR SHALL COORDINATE UTILITY WORK TO MINIMIZE TIME SPENT WORKING NEAR SPU LINES. A SPU REPRESENTATIVE MUST BE ON -SITE AT ALL TIMES WHEN ACTIVELY WORKING NEAR SPU WATER LINES WITHIN BEACON WAY S. CONTRACTOR SHALL PROVIDE A MINIMUM OF 5 WORKING DAYS ADVANCE NOTICE AND COORDINATE ALL WORK NEAR SPU LINES WITH SPU"S PRIMARY CONTACT: KATHI ILLMAN 206-402-2187 KATHI.ILLMAN@SEATTLE. GOV 13. WHERE TYPE 2 CATCH BASINS ARE INSTALLED IN ROADWAY GUTTER SECTION, THEY SHALL BE PLACED IN ACCORDANCE WITH DETAIL 6 ON DWG SW 15. 14. PIPE LENGTHS SHOWN ON STORM PLAN AND PROFILE SHEETS ARE FROM CENTER TO CENTER OF STRUCTURE AND ARE PROVIDED FOR QUANTITY TAKE OFF ONLY. SLOPES AND INVERT ELEVATIONS ARE BASED ON THE ACTUAL PIPE LENGTH FROM WALL TO WALL OF STRUCTURE. WASTE WATER UTILITY GENERAL NOTES 1. PROVIDE AS -BUILT INFORMATION SHOWING ALL INVERT AND RIM ELEVATIONS OF MANHOLES AND SIDE SEWER VERTICAL AND HORIZONTAL LOCATIONS. Ar%:/g:/mwKWA11114L*00i//:1L7 J. WHERE UTILITY PIPE LINE VERTICAL SEPARATION IS LESS THAN (1) ONE FOOT, INSERT ETHAFOAM HS 600 PLANK -FOAM BOARD OR EQUAL BETWEEN BOTH UTILITIES. 4. ALL SIDE SEWER COUPLINGS SHALL BE 'FERNCO STRONG -BACK" OR APPROVED EQUAL. ORIGINAL PLANS STAMPED BY: ANDREW WEIGANDT ON:8/19/17 Rol REVISION SURVEYED: BRH DESIGNED: AW DRAWN: AW CHECKED: AW, AG BY DATE APPR APPROVED: AG SCALE: ONE INCH AT FULL SCALE IF NOT ONE INCH SCALE ACCORDINGLY TEMPORARY EROSION AND SEDIMENT CONTROL NOTES 1. THE TEMPORARY EROSION AND SEDIMENT CONTROL (TESC) PLAN OUTLINED HEREIN IS CONCEPTUAL. THE CONTRACTOR IS REQUIRED TO SUBMIT A FINAL TEMPORARY WATER POLLUTION AND EROSION CONTROL PLAN IN ACCORDANCE WITH SPECIAL PROVISIONS SECTION 1-07. 15. 2. THE IMPLEMENTATION OF THESE ESC PLANS AND THE CONSTRUCTION, MAINTENANCE, REPLACEMENT AND UPGRADING OF THESE ESC FACILITIES IS THE RESPONSIBILITY OF THE APPLICANT/ESC SUPERVISOR UNTIL ALL CONSTRUCTION IS APPROVED. J. THE ESC FACILITIES SHOWN ON THIS PLAN MUST BE CONSTRUCTED PRIOR TO OR IN CONJUNCTION WITH ALL CLEARING AND GRADING SO AS TO ENSURE THAT THE TRANSPORT OF SEDIMENT TO SURFACE WATERS, DRAINAGE SYSTEMS, AND ADJACENT PROPERTIES IS MINIMIZED. 4. THE ESC FACILITIES SHOWN ON THESE PLANS ARE THE MINIMUM REQUIREMENTS FOR ANTICIPATED SITE CONDITIONS. DURING THE CONSTRUCTION PERIOD, THESE ESC FACILITIES SHALL BE UPGRADED AS NEEDED FOR UNEXPECTED STORM EVENTS AND MODIFIED TO ACCOUNT FOR CHANGING SITE CONDITIONS (E.G., ADDITIONAL SUMP PUMPS, RELOCATION OF DITCHES AND SILT FENCES, ETC.). 5. THE ESC FACILITIES SHALL BE INSPECTED DAILY BY THE APPLICANT/ESC SUPERVISOR AND MAINTAINED TO ENSURE CONTINUED PROPER FUNCTIONING. WRITTEN RECORDS SHALL BE KEPT OF WEEKLY REVIEWS OF THE ESC FACILITIES DURING THE WET SEASON (OCT. 1 TO APRIL 30) AND OF MONTHLY REVIEWS DURING THE DRY SEASON (MAY 1 TO SEPT. 30). 6. ANY AREAS OF EXPOSED SOILS, INCLUDING ROADWAY EMBANKMENTS, THAT WILL NOT BE DISTURBED FOR TWO DAYS DURING THE WET SEASON OR SEVEN DAYS DURING THE DRY SEASON SHALL BE IMMEDIATELY STABILIZED WITH THE APPROVED ESC METHODS (E.G., SEEDING, MULCHING, PLASTIC COVERING, ETC.). 7. ANY AREA NEEDING ESC MEASURES NOT REQUIRING IMMEDIATE ATTENTION SHALL BE ADDRESSED WITHIN FIFTEEN (15) DAYS. 8. THE ESC FACILITIES ON INACTIVE SITES SHALL BE INSPECTED AND MAINTAINED A MINIMUM OF ONCE A MONTH OR WITHIN FORTY-EIGHT (48) HOURS FOLLOWING A STORM EVENT 9. AT NO TIME SHALL MORE THAN ONE (1) FOOT OF SEDIMENT BE ALLOWED TO ACCUMULATE WITHIN A CATCH BASIN. ALL CATCH BASINS AND CONVEYANCE LINES SHALL BE CLEANED PRIOR TO PAVING. THE CLEANING OPERATION SHALL NOT FLUSH SEDIMENT -LADEN WATER INTO THE DOWNSTREAM SYSTEM. 10. WHERE STRAW MULCH FOR TEMPORARY EROSION CONTROL IS REQUIRED, IT SHALL BE APPLIED AT A MINIMUM THICKNESS OF 2 TO 3 INCHES. 11. NO STOCKPILING/STAGING WILL BE CONDUCTED WITHIN THE RIGHT OF WAY OR CITY OWNED SITE. CONTRACTOR IS RESPONSIBLE FOR OBTAINING ITS OWN STOCKPILE/STAGING AREAS. 12. PUBLIC STREETS SHALL BE CLEANED ONCE PER DAY OR AS DIRECTED BY THE CITY. FLUSHING OF STREETS WITH WATER WILL NOT BE ALLOWED. 13. IN ACCORDANCE WITH THE DEPARTMENT OF ECOLOGY REQUIREMENTS, WASTEWATER FROM CEMENT CONCRETE MASONRY, OR ASPHALT CONCRETE CUTTING, OR POURING OPERATIONS SHALL NOT BE DISCHARGED INTO STORM DRAINAGE SYSTEMS OR SURFACE WATERS. IMPERVIOUS SURFACES CONTAMINATED WITH SEDIMENT FROM GRIT AND CUTTING, PLANING OR PULVERIZING OPERATIONS SHALL BE VACUUM -CLEANED TO PREVENT CONTAMINANTS FROM ENTERING THE STORM DRAINAGE SYSTEM OR SURFACE WATERS. 14. CATCH BASIN INSERTS SHALL BE PLACED AT ALL CATCH BASINS ALONG PIPE ALIGNMENT. SEE DETAIL 1, THIS SHEET. 15. INSTALL SILT FENCING AROUND ENTIRE STAGING/STOCKPILE AREAS PER COR STANDARD PLAN 214. 16. TEMPORARY SEDIMENTATION POND MAY BE REQUIRED IN CONTRACTOR STAGING AREA IF THE SILT FENCING IS NOT ADEQUATE. 17. KEEP PUBLIC AND PRIVATE ROADWAYS/PARKING LOTS, SIDEWALKS, AND TRAILS FREE OF DEBRIS AND SEDIMENT. 18. CONSTRUCT TEMPORARY STORMWATER BYPASSES AS NEEDED DURING CONSTRUCTION TO DIVERT STORMWATER AROUND TRENCHING AND PIPE INSTALLATION ACTIVITIES AND MAINTAIN DRAINAGE OF UPSTREAM STORMWATER. CONTRACTOR IS RESPONSIBLE FOR DESIGN OF STORM DRAIN BYPASS PLAN. UNLESS OTHERWISE NOTED, BYPASSES ARE TO BE DESIGNED TO HANDLE THE VOLUME AND PEAK FLOWS OF THE 2-YEAR STORM EVENT AT A MINIMUM. SUBMIT AS PART OF WATER CONTROL PLAN. STORM DRAIN BYPASS PLAN SHALL ALSO ADDRESS THE DOWNSTREAM SYSTEM AND PREVENTION OF STORMWATER ENTERING THE WORK AREA BY BACKING UP FROM DOWNSTREAM. 19. ALL DEWATERING WATER AND RUNOFF WITHIN CONSTRUCTION AREAS SHALL BE TREATED VIA SEDIMENTATION, FILTRATION THROUGH VEGETATION IN APPROVED AREAS, OR PORTABLE FILTRATION SYSTEMS (UTILIZING TANKS AND FILTERS), AS NEEDED, PRIOR TO DISCHARGE TO DOWNSTREAM SYSTEM IN ORDER TO MEET ALL APPLICABLE LOCAL, STATE AND FEDERAL WATER QUALITY REGULATIONS. CONTRACTOR MAY ALSO DISCHARGE TO THE SANITARY SEWER SYSTEM AFTER OBTAINING APPLICABLE PERMITS AND MEETING PRETREATMENT REQUIREMENTS. \SS 5" TRIM GEOTEXTILE GRATE MAX FRAME - 7 OVERFLOW BYPASS F SEDIMENT �--I AND DEBRIS I VERTICAL: NAVD 1988 HORIZONTAL: NAD 1983/1991 DATUM NOTES: 1. SIZE THE CATCH BASIN INSERT FOR THE STORMWATER STRUCTURE IT WILL SERVICE. 2. THE CATCH BASIN INSERT SHALL HAVE A BUILT-IN HIGH -FLOW RELIEF SYSTEM (OVERFLOW BYPASS). 3. THE RETRIEVAL SYSTEM MUST ALLOW REMOVAL OF THE INLET DEVICE WITHOUT SPILLING THE COLLECTED MATERIAL. 4. INSERTS MUST BE REMOVED AFTER PROJECT CONSTRUCTION IS COMPLETE. DETAIL 1 CATCH BASIN INSERT - SCALE: NTS CITY OF RENTON Planning/Building/Public Works Dept. RENTON HILL UTILITY REPLACEMENT PROJECT GENERAL UTILITY NOTES AND TESC NOTES 06/19/17 FIELOBOOK: PAGE: DRAWING NO: G-2 SHEET: Z OF: ©mm©m, ©m