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HomeMy WebLinkAboutEx02_P_Franchise Permit Application 12RS 2019-001P:\0\0894126\CAD general\44\12RS UTWM Dig Sites 2019-01\12RS UTWM Dig Sites 2019-01-A_1-8.dwg TAB:COVER Date Exported: 06/03/20 - 10:42 by syiOLYMPIC PIPE LINE COMPANY LLC  LIN' A9E 6: 5EN7ON :A6+IN*7ON  12RS UTWM DIG SITE 2019-01 12" PRODUCTS PIPELINE RENTON STATION TO SEATTLE TERMINAL 12RS UTWM DIG SITE 2019-0112" PRODUCTS PIPELINERENTON STATION TO SEATTLE TERMINALOL<MPIC PIPE LINE COMPAN< LLC O))ICE P+ONE 2 91-22 PRO-ECT MANAGER TIM DUNN ISSUED )OR PERMIT ISSUED )OR PERMITPRO-ECT NO 09-12-OL<MPIC PIPE LINE COMPAN< LLC 2 91-22O))ICE P+ONE 2 1-012 PRO-ECT CONTACT CARLA WOODWORT+ R EN T ON A V EN U E S O U TH S. 132ND STREET 84TH AVENUE S.2144800776 2144800776 2144800777 2144800775 1823059055 1823059199 2144800485 2144800774 2144800720 2144800520 2144800487 2144800500 2144800488 2144800523 2144800522 S 134 T H S T R E E T 1823059050 1823059050 1823059054 S. 132ND STREET SENECA AVENUE NW84TH AVENUE S.OLYMPIC PIPE LINE COMPANY LLC A A P:\0\0894126\CAD general\44\12RS UTWM Dig Sites 2019-01\12RS UTWM Dig Sites 2019-01-A_2-8.dwg TAB:S02 Date Exported: 05/19/20 - 10:28 by syiVICINITY MAP W E N S PARCEL MAP 0 SCALE IN FEET 1,000 2,000 0 SCALE IN FEET 300 600 APPLICANT / PROJECT DEVELOPER: OLYMPIC PIPE LINE COMPANY LLC 600 SW 39TH ST, SUITE 275 RENTON, WA 98057 REFERENCE DOCUMENTS: DATA SOURCE: MAPBOX OPEN STREET MAP, 2016. PROJECTION: NAD83 WASHINGTON STATE PLANES, NORTH ZONE, US FOOT. DWG TITLEDWG# SHEET INDEX: COVER SHEET12RS UTWM Dig Sites 2019-01-A_1-8 VICINITY MAP AND PROJECT INFORMATION12RS UTWM Dig Sites 2019-01-A_2-8 SITE PLAN, ACCESS AND TESC/SPCC NOTES 12RS UTWM Dig Sites 2019-01-A_4-8 12RS UTWM Dig Sites 2019-01-A_3-8 TESC, GRADING PLAN AND TESC DETAILS W E N S PROJECT SITE 12RS UTWM DIG SITE 2019-01 SITE OWNER:LOCATION: CITY OF RENTON RENTON AVE SOUTH, EAST OF S. 132ND STREET RENTON, WA 98178 OLYMPIC PIPE LINE COMPANY LLC TIM DUNN 600 SW 39TH ST, SUITE 275 RENTON, WA 98057 OFFICE PHONE: (425) 981-2542 CELL PHONE: (206) 419-5497 EMAIL: TIM.DUNN@BP.COM SECTION - TOWNSHIP - RANGE: NE13 - T23N - R04E - WM NW18 - T23N - R05E - WM CROSS SECTIONS A-A' AND B-B' 12RS UTWM Dig Sites 2019-01-A_6-8 12RS UTWM Dig Sites 2019-01-A_5-8 SITE RESTORATION PLAN OLYMPIC PROJECT DEVELOPER CONTACT: CITY OF RENTON, 2020, GIS DATA SHAPEFILES PARCEL BOUNDARIES, UNDERGROUND UTILITIES AND TOPO CONTOURS. GEOENGINEERS, INC. 2020, EXCAVATIONS AND FENCES CREATED FROM SKETCH ON AERIAL FROM BING AERIAL AND FROM SITE VISIT ON MAY 1, 2020. PROJECT MANAGER AND CESCL CONTACT INFORMATION: CONTRACTOR CONTACT INFORMATION: HANGING H COMPANIES SUPERINTENDENT DAVID WALKER 1912 S. BURLINGTON BLVD., SUITE 100 BURLINGTON, WA 98233 CELL PHONE: (360) 661-3535 GEOENGINEERS, INC. CARLA WOODWORTH 17425 NE UNION HILL ROAD, SUITE 250 REDMOND, WA 98052 OFFICE PHONE: (425) 861-6012 CELL PHONE: (425) 466-6772 12RS UTWM Dig Sites 2019-01-A_7-8 TRENCH RESTORATION AND STREET OVERLAY REQUIREMENTS 12RS UTWM Dig Sites 2019-01-A_8-8 TRENCH RESTORATION AND STREET OVERLAY REQUIREMENTS OPL12OPL12OPL12OPL12OPL12OPL12OPL12OPL12OPL12OPL12OPL12OPL12O P L 1 2OP L 1 2OP L 1 2OP L 1 2 3003 5 0 25 0 3 0 0 35035020020 0 2 5 0 25 0 250 2502 0 0 200 250 250 R E N T O N A V E N U E S O U T H S. 132ND STREET 84TH AVENUE S.PARCEL #2144800776 (R-10) PARCEL #2144800776 (R-10) PARCEL #2144800777 (R-14) PARCEL #2144800775 (R-14) PARCEL #1823059055 (R-14) PARCEL #1823059199 (R-8) PARCEL #2144800485 (R-14) PARCEL #2144800774 (R-10) PARCEL #2144800720 (R-10) PARCEL #2144800520 (R-14) PARCEL #2144800487 (R-14) PARCEL #2144800500 (R-14) PARCEL #2144800488 (R-14) PARCEL #2144800523 (R-14) PARCEL #2144800522 (R-14) S 134T H S T R E E T 8' (W) x 35' (L) x 4' (D) EXCAVATION APPROXIMATE LOCATION OF ANOMALY 8' (W) x 35' (L) x 15.5' (D) EXCAVATION 12RS UTWM DIG SITE 2019-01 PARCEL #1823059050 (R-8) PARCEL #1823059050 (R-8) PARCEL #1823059054 (R-8) S. 132ND STREET SENECA AVENUE NW84TH AVENUE S.PARCEL #2144800778 (R-10) OLYMPIC PIPE LINE COMPANY LLC A A P:\0\0894126\CAD general\44\12RS UTWM Dig Sites 2019-01\12RS UTWM Dig Sites 2019-01-A_3-8.dwg TAB:S03 Date Exported: 05/19/20 - 10:34 by syiDATA SOURCE: DATA FROM CITY OF RENTON GIS DATA AND AERIAL PHOTO FROM BING AERIAL. PROJECTION: NAD83 WASHINGTON STATE PLANES, NORTH ZONE, US FOOT. W E N S LEGEND SEWER LINE WATER LINE STORM DRAIN LINE INACTIVE PIPE SITE ACCESS PARCEL BOUNDARY OLYMPIC PIPELINE (12") 10-FOOT CONTOUR 50-FOOT CONTOUR ZONING NUMBER OPL12 SCALE: SITE PLAN AND ACCESS 1" = 100'0 SCALE IN FEET 100 200 TEMPORARY EROSION AND SEDIMENT CONTROL (TESC) NOTES 1.THESE TEMPORARY EROSION AND SEDIMENT CONTROL NOTES ARE FROM THE 2016 KING COUNTY SURFACE WATER DESIGN MANUAL, APPENDIX D (2016). 2.APPROVAL OF THIS EROSION AND SEDIMENTATION CONTROL (TESC) PLAN DOES NOT CONSTITUTE AN APPROVAL OF PERMANENT ROAD OR DRAINAGE DESIGN (E.G. SIZE AND LOCATION OF ROADS, PIPES, RESTRICTORS, CHANNELS, RETENTION FACILITIES, UTILITIES, ETC.). 3.THE IMPLEMENTATION OF THESE TESC PLANS AND THE CONSTRUCTION, MAINTENANCE, REPLACEMENT, AND UPGRADING OF THESE TESC FACILITIES IS THE RESPONSIBILITY OF THE APPLICANT/TESC SUPERVISOR UNTIL ALL CONSTRUCTION IS APPROVED. 4.THE TESC 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. 5.THE TESC FACILITIES SHOWN ON THIS PLAN ARE THE MINIMUM REQUIREMENTS FOR ANTICIPATED SITE CONDITIONS. DURING THE CONSTRUCTION PERIOD, THESE TESC FACILITIES SHALL BE UPGRADED AS NEEDED FOR UNEXPECTED STORM EVENTS AND MODIFIED TO ACCOUNT FOR CHANGING SITE CONDITIONS (E.G. ADDITIONAL COVER MEASURES, ADDITIONAL SUMP PUMPS, AND SILT FENCES, PERIMETER PROTECTION ETC.) AS DIRECTED BY OLYMPIC/BP USPL. 6.THE CONTRACTOR SHALL MAINTAIN ALL PUBLIC ROADWAYS WITH STREET SWEEPING AS NECESSARY TO REMOVE SEDIMENT. 7.THE TESC FACILITIES SHALL BE INSPECTED DAILY BY THE APPLICANT/TESC SUPERVISOR AND MAINTAINED TO ENSURE CONTINUED PROPER FUNCTIONING. 8.ANY AREAS OF EXPOSED SOILS, INCLUDING ROADWAY EMBANKMENTS, THAT WILL NOT BE DISTURBED FOR TWO CONSECUTIVE DAYS DURING THE WET SEASON OR SEVEN DAYS DURING THE DRY SEASON SHALL BE IMMEDIATELY STABILIZED WITH THE APPROVED TESC METHODS (E.G. SEEDING, MULCHING, PLASTIC COVERING, ETC.). 9.MATERIAL THAT MAY BE TEMPORARILY STORED FOR USE IN PROJECT ACTIVITIES SHALL BE COVERED WITH PLASTIC OR OTHER IMPERVIOUS MATERIAL AND PROTECTED BY APPROPRIATE BMPS TO PREVENT SEDIMENTS FROM BEING WASHED FROM THE STORAGE AREA TO SURFACE WATERS. (BA-6, BA-27). 10.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. SPILL PREVENTION, COUNTERMEASURES AND CONTROL (SPCC) NOTES THE CONTRACTOR SHALL PREPARE A SPCC PLAN PRIOR TO BEGINNING CONSTRUCTION. THE SPCC PLAN SHALL IDENTIFY THE APPROPRIATE SPILL CONTAINMENT MATERIALS, WHICH WILL BE AVAILABLE AT THE PROJECT SITE AT ALL TIMES, DETAIL THE PROCEDURES THAT WILL BE FOLLOWED IN THE EVENT OF A SPILL TO PREVENT OR MINIMIZE EFFECTS, AND WILL SPECIFICALLY ADDRESS POTENTIAL FUEL SPILLS FROM VEHICLES AND POTENTIAL SPILLS OF CHEMICALS THAT ARE COMMONLY USED DURING CONSTRUCTION. 1.THE CONTRACTOR SHALL ENSURE THAT FUEL AND CHEMICAL STORAGE IS STORED WITHIN SECONDARY CONTAINMENT AREAS. THE SECONDARY CONTAINMENT SHALL BE SURFACED WITH AN IMPERMEABLE MATERIAL AND SIZED TO CONTAIN THE VOLUME OF STORED FUEL AND/OR CHEMICALS. TO PROTECT FROM RAIN AND SNOW, IT IS RECOMMENDED THAT CONTAINERS AND THE SECONDARY CONTAINMENT BE INSIDE A BUILDING OR UNDER SOME TYPE OF PROTECTIVE COVERING. THE COVER MUST ALLOW FOR ADEQUATE INSPECTION. COVERED SECONDARY CONTAINMENT MUST BE LARGE ENOUGH TO CONTAIN TEN PERCENT OF THE FREE LIQUID IN ALL CONTAINERS OR 100 PERCENT OF THE FREE LIQUID IN THE LARGEST CONTAINER. UNCOVERED SECONDARY CONTAINMENT MUST HAVE CAPACITY TO HOLD THE ADDITIONAL PRECIPITATION RESULTING FROM A MAXIMUM 25-YEAR STORM LASTING 24 HOURS. THAT IS, THE CONTAINMENT SYSTEM MUST HOLD THE VOLUME OF WATER RESULTING FROM A 24-HOUR RAINFALL WITH AN AVERAGE RAINFALL INTENSITY (IN INCHES/HOUR) OF A STORM THAT SHOULD OCCUR ONLY ONCE IN EVERY 25 YEARS. 2.SPILL RESPONSE EQUIPMENT WILL BE LOCATED WITHIN THE CONSTRUCTION ZONES TO MINIMIZE COUNTERMEASURE RESPONSE TIMES. 3.THERE WILL BE NO VISIBLE SHEEN FROM PETROLEUM PRODUCTS AS A RESULT OF PROJECT ACTIVITIES. 4.FUEL HOSES, OIL DRUMS, OIL OR FUEL TRANSFER VALVES AND FITTINGS, ETC., SHALL BE CHECKED REGULARLY FOR DRIPS OR LEAKS, AND SHALL BE MAINTAINED AND STORED PROPERLY TO PREVENT SPILLS. 5.ALL CONSTRUCTION DEBRIS AND OTHER SOLID WASTE MATERIAL SHALL BE PROPERLY MANAGED AND DISPOSED OF IN AN DISPOSAL SITE APPROVED BY THE APPROPRIATE REGULATORY AUTHORITY. TESC CONSTRUCTION SEQUENCE NOTES (PROJECTED PROJECT DURATION JULY 27TH - AUGUST 5TH, 2020) 1.HOLD THE PRE-CONSTRUCTION MEETING. 2.INSTALL CATCH BASIN PROTECTION, IF REQUIRED. 3.INSTALL PERIMETER PROTECTION (STRAW WATTLE) AS NEEDED. 4.MAINTAIN EROSION CONTROL MEASURES IN ACCORDANCE WITH KING COUNTY SURFACE WATER DESIGN MANUAL (2016) STANDARDS AND MANUFACTURER'S RECOMMENDATIONS. 5.RELOCATE EROSION CONTROL MEASURES, OR INSTALL NEW MEASURES AS NEEDED. 6.COVER ALL AREAS THAT WILL BE UNWORKED FOR MORE THAN SEVEN DAYS DURING THE DRY SEASON OR TWO DAYS DURING THE WET SEASON WITH STRAW, WOOD FIBER MULCH, COMPOST, PLASTIC SHEETING, OR EQUIVALENT. 7.PR0VIDE TEMPORARY STABILIZATION OF ALL AREAS, WITHIN SEVEN DAYS OF COMPLETING CONSTRUCTION ACTIVITIES. 8.UPON COMPLETION OF THE PROJECT, STABILIZE ALL DISTURBED AREAS AND REMOVE BMPS. 9.ALL CONSTRUCTION DEBRIS, EXCESS SEDIMENT AND OTHER SOLID WASTE MATERIAL SHALL BE PROPERLY MANAGED AND DISPOSED OF IN DISPOSAL SITE APPROVED BY THE APPROPRIATE REGULATORY AUTHORITY. RESTORATION RESTORATION IS TO BE COMPLETED AS SHOWN ON DRAWINGS 6, 7 AND 8. (R-14) 3'-4' ADJACENT ROLLS SHALL TIGHTLY ABUT STRAW ROLLS MUST BE PLACED ALONG SLOPE CONTOURS STRAW WATTLE (MID 9998192) SCALE: 1STRAW WATTLE DETAIL NOT TO SCALE (ECOLOGY BMP C235) ROLL SPACING DEPENDS ON SOIL TYPE AND SLOPE STEEPNESS 10'-25' (3-8m) 3"-5" (75-125mm) SEDIMENT, ORGANIC MATTER, AND NATIVE SEEDS ARE CAPTURED BEHIND THE ROLLS 1" x 1" STAKE 8"-10" DIA. (200-250mm) NOTES: 1.STRAW ROLL INSTALLATION REQUIRES THE PLACEMENT AND SECURE STAKING OF THE ROLL IN A TRENCH, 3" x 5" (75-125mm) DEEP, DUG ON CONTOUR. 2.RUNOFF MUST NOT BE ALLOWED TO RUN UNDER OR AROUND ROLL. LIVE STAKE OPL12OPL12OPL12OPL12OPL12OPL12OPL12OPL12OPL12OPL12OPL12OPL12OPL12OPL12OPL122452 4 5 2 5 0 2 5 5 220 2252 3 0 2 3 5 2352 2 5 2302352 4 0 240 R E N T O N A V E N U E S O U T H S. 132ND STREET 84TH AVENUE S.PARCEL #2144800777 PARCEL #2144800520 B'B A'A70' 8' C'C 8' (W) x 35' (L) x 15.5' (D) EXCAVATION 8' (W) x 35' (L) x 4' (D) EXCAVATION APPROXIMATE LOCATION OF ANOMALY APPROXIMATE END OF CASING (DEPTH OF COVER 12.5 FT.) 35' 35' SCALE: 2 INLET PROTECTION WITH SECTIONS NOT TO SCALE GRATE FRAME SEDIMENT AND DEBRIS DRAINAGE GRATE 5" MAX TRIM OVERFLOW BYPASS BELOW INLET GRATE DEVICE FILTERED WATER DRAINAGE GRATE ~RECTANGULAR GRATE SHOWN BELOW INLET GRATE DEVICE OVERFLOW BYPASS (TYP) NOTES: 1.SIZE THE "BELOW INLET GRATE DEVICE" (BIGD) FOR THE STORM WATER STRUCTURE IT WILL SERVICE 2.THE BIGD SHALL HAVE A BUILT-IN HIGH-FLOW RELIEF SYSTEM (OVERFLOW BYPASS). 3.THE RETRIEVAL SYSTEM MUST ALLOW REMOVAL OF THE BIGD WITHOUT SPILLING HTE COLLECTED MATERIAL. 4.PERFORM MAINTENANCE IN ACCORDANCE WITH STANDARD SPECIFICATION 8-01.3(15). RETRIEVAL SYSTEM (TYP) (ECOLOGY BMP C220) OLYMPIC PIPE LINE COMPANY LLC A A P:\0\0894126\CAD general\44\12RS UTWM Dig Sites 2019-01\12RS UTWM Dig Sites 2019-01-A_4-8.dwg TAB:S04 Date Exported: 05/19/20 - 10:38 by syiSCALE: DETAILED SITE PLAN 1" = 10' 0 SCALE IN FEET 10 20 DATA SOURCE: DATA FROM CITY OF RENTON GIS DATA AND AERIAL PHOTO FROM BING AERIAL. PROJECTION: NAD83 WASHINGTON STATE PLANES, NORTH ZONE, US FOOT. W E N S LEGEND STRAW WATTLE (BMP C235) CATCH BASIN INSERT (BMP C220) STORM DRAIN LINE WATER LINE INACTIVE PIPE PARCEL BOUNDARY OLYMPIC PIPELINE (12") 1-FOOT CONTOUR 5-FOOT CONTOUR OPL12 NOTE: 1.A VACUUM TRUCK WILL BE USED TO COMPLETE EXCAVATION ACTIVITIES. SOILS REMOVED FROM EXCAVATION WILL BE TRANSPORTED OFFSITE TO AN AUTHORIZED DISPOSAL FACILITY. Elevation (Feet)Elevation (Feet)Distance (Feet) 224 228 232 236 240 244 224 228 232 236 240 244 0 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64 68 72 76 80 84 88 90 Elevation (Feet)Elevation (Feet)Distance (Feet) 224 228 232 236 240 244 224 228 232 236 240 244 0 4 8 12 16 20 A (North) A' (South) B (West) B' (East) EXISTING GRADE SURFACE/ASPHALT PAVING 8' (W) x 35' (L) x 4' (D) EXCAVATION (AT GROUND SURFACE) EXISTING 12-INCH OLYMPIC PIPELINE EXISTING GRADE SURFACE 15.5' 11.5' 4.0' 35.0'35.0' 8' (W) x 35' (L) x 15.5' (D) EXCAVATION (AT GROUND SURFACE) APPROXIMATE END OF CASING (DEPTH OF COVER 12.5 FT.) APPROXIMATE LOCATION OF ANOMALY Elevation (Feet)Elevation (Feet)Distance (Feet) 224 228 232 236 240 244 224 228 232 236 240 244 0 4 8 12 16 20 C (West) C' (East) INSTALL VENT AND TEST WIRES SOUTH OF SIDEWALK EXISTING 12-INCH OLYMPIC PIPELINE EXISTING 12-INCH OLYMPIC PIPELINE 8' (W) x 35' (L) x 15.5' (D) EXCAVATION (AT GROUND SURFACE) 8' (W) x 35' (L) x 4' (D) EXCAVATION (AT GROUND SURFACE) INSTALL VENT AND TEST WIRES EXISTING GRADE SURFACE INSTALL VENT AND TEST WIRES 5 FT WIDE SIDEWALK EDGE OF ROADWAY SIDEWALK CURB EXISTING GROUND SURFACE - GRASS OLYMPIC PIPE LINE COMPANY LLC A A P:\0\0894126\CAD general\44\12RS UTWM Dig Sites 2019-01\12RS UTWM Dig Sites 2019-01-A_5-8.dwg TAB:S05 Date Exported: 05/19/20 - 10:48 by syiSCALE: CROSS SECTION A-A' 1" = 4' 0 SCALE IN FEET 4 8 SCALE: CROSS SECTION B-B' 1" = 4' 0 SCALE IN FEET 4 8 SCALE: CROSS SECTION C-C' 1" = 4' 0 SCALE IN FEET 4 8 OPL12OPL12OPL12OPL12OPL12OPL12OPL12OPL12OPL12OPL12OPL12OPL12OPL12OPL12OPL122452 4 5 2252 3 0 2 3 5 2 2 5 2302352 4 0 240 R E N T O N A V E N U E S O U T H S. 132ND STREET 84TH AVENUE S.PARCEL #2144800520 OLYMPIC PIPE LINE COMPANY LLC A A P:\0\0894126\CAD general\44\12RS UTWM Dig Sites 2019-01\12RS UTWM Dig Sites 2019-01-A_6-8.dwg TAB:S06 Date Exported: 05/19/20 - 12:10 by syiSCALE: SITE RESTORATION PLAN 1" = 10' 0 SCALE IN FEET 10 20 DATA SOURCE: DATA FROM CITY OF RENTON GIS DATA AND AERIAL PHOTO FROM BING AERIAL. PROJECTION: NAD83 WASHINGTON STATE PLANES, NORTH ZONE, US FOOT. W E N S PARCEL BOUNDARY OLYMPIC PIPELINE (12") 1-FOOT CONTOUR 5-FOOT CONTOUR LEGEND STORM DRAIN LINE WATER LINE INACTIVE PIPE GRASS SEED AND MULCH WITHIN DISTURBANCE AREAS ASPHALT PAVING CONCRETE PAVING RESTORATION PLAN Table 4.1.3 - Landscaping Seed Mix CoPPon NaPe Latin NaPe  Weight  Purity  GerPination Perennial rye blend Lolium perenne 70 98 90 Chewings and red fescue blend Festuca rubra var. commutata or Fes- tuca rubra 30 98 90 OPL12 REFERENCE: KING COUNTY SURFACE WATER DESIGN MANUAL, 2016 FIGURE D.2.1.2.2 MULCHING, FIGURE D.2.1.2.6 TEMPORARY AND PERMANENT SEEDING AND FIGURE D.2.1.2.3 NETS AND BLANKETS. D.2.1.2.2: MULCHING PURPOSE THE PURPOSE OF MULCHING SOILS IS TO PROVIDE IMMEDIATE TEMPORARY PROTECTION FROM EROSION. MULCH ALSO ENHANCES PLANT ESTABLISHMENT BY CONSERVING MOISTURE, HOLDING FERTILIZER, SEED, AND TOPSOIL IN PLACE, AND MODERATING SOIL TEMPERATURES. THERE IS AN ENORMOUS VARIETY OF MULCHES THAT MAY BE USED. ONLY THE MOST COMMON TYPES ARE DISCUSSED IN THIS SECTION. CONDITIONS OF USE AS A TEMPORARY COVER MEASURE, MULCH SHOULD BE USED: 1.ON DISTURBED AREAS THAT REQUIRE COVER MEASURES FOR LESS THAN 30 DAYS. 2.AS A COVER FOR SEED DURING THE WET SEASON AND DURING THE HOT SUMMER MONTHS. 3.DURING THE WET SEASON ON SLOPES STEEPER THAN 3H:1V WITH MORE THAN 10 FEET OF VERTICAL RELIEF. DESIGN AND INSTALLATION SPECIFICATIONS FOR MULCH MATERIALS, APPLICATION RATES, AND SPECIFICATIONS, SEE TABLE D.2.1.2.A. NOTE: THICKNESSES MAY BE INCREASED FOR DISTURBED AREAS IN OR NEAR CRITICAL AREAS OR OTHER AREAS HIGHLY SUSCEPTIBLE TO EROSION. MAINTENANCE STANDARDS 1.THE THICKNESS OF THE COVER MUST BE MAINTAINED. 2.ANY AREAS THAT EXPERIENCE EROSION SHALL BE REMULCHED AND/OR PROTECTED WITH A NET OR BLANKET. IF THE EROSION PROBLEM IS DRAINAGE RELATED, THEN THE DRAINAGE PROBLEM SHALL BE ASSESSED AND ALTERNATE DRAINAGE SUCH AS INTERCEPTOR SWALES MAY BE NEEDED TO FIX THE PROBLEM AND THE ERODED AREA REMULCHED. D.2.1.2.6: TEMPORARY AND PERMANENT SEEDING PURPOSE SEEDING IS INTENDED TO REDUCE EROSION BY STABILIZING EXPOSED SOILS. A WELL-ESTABLISHED VEGETATIVE COVER IS ONE OF THE MOST EFFECTIVE METHODS OF REDUCING EROSION. CONDITIONS OF USE 1.SEEDING SHALL BE USED THROUGHOUT THE PROJECT ON DISTURBED AREAS THAT HAVE REACHED FINAL GRADE OR THAT WILL REMAIN UNWORKED FOR MORE THAN 30 DAYS. 2.VEGETATION-LINED CHANNELS SHALL BE SEEDED. CHANNELS THAT WILL BE VEGETATED SHOULD BE INSTALLED BEFORE MAJOR EARTHWORK AND HYDROSEEDED OR COVERED WITH A BONDED FIBER MATRIX (BFM). 3.RETENTION/DETENTION PONDS SHALL BE SEEDED AS REQUIRED. 4.AT THE COUNTY'S DISCRETION, SEEDING WITHOUT MULCH DURING THE DRY SEASON IS ALLOWED EVEN THOUGH IT WILL TAKE MORE THAN SEVEN DAYS TO DEVELOP AN EFFECTIVE COVER. MULCH IS, HOWEVER, RECOMMENDED AT ALL TIMES BECAUSE IT PROTECTS SEEDS FROM HEAT, MOISTURE LOSS, AND TRANSPORT DUE TO RUNOFF. 5.AT THE BEGINNING OF THE WET SEASON, ALL DISTURBED AREAS SHALL BE REVIEWED TO IDENTIFY WHICH ONES CAN BE SEEDED IN PREPARATION FOR THE WINTER RAINS (SEE SECTION D.2.4.2). DISTURBED AREAS SHALL BE SEEDED WITHIN ONE WEEK OF THE BEGINNING OF THE WET SEASON. A SKETCH MAP OF THOSE AREAS TO BE SEEDED AND THOSE AREAS TO REMAIN UNCOVERED SHALL BE SUBMITTED TO THE DPER INSPECTOR. THE DPER INSPECTOR MAY REQUIRE SEEDING OF ADDITIONAL AREAS IN ORDER TO PROTECT SURFACE WATERS, ADJACENT PROPERTIES, OR DRAINAGE FACILITIES. 6.AT FINAL SITE STABILIZATION, ALL DISTURBED AREAS NOT OTHERWISE VEGETATED OR STABILIZED SHALL BE SEEDED AND MULCHED (SEE SECTION D.2.4.5). DESIGN AND INSTALLATION SPECIFICATIONS 1.THE BEST TIME TO SEED IS APRIL 1 THROUGH JUNE 30, AND SEPTEMBER 1 THROUGH OCTOBER 15. AREAS MAY BE SEEDED BETWEEN JULY 1 AND AUGUST 31, BUT IRRIGATION MAY BE REQUIRED IN ORDER TO GROW ADEQUATE COVER. AREAS MAY ALSO BE SEEDED DURING THE WINTER MONTHS, BUT IT MAY TAKE SEVERAL MONTHS TO DEVELOP A DENSE GROUNDCOVER DUE TO COLD TEMPERATURES. THE APPLICATION AND MAINTENANCE OF MULCH IS CRITICAL FOR WINTER SEEDING. 2.TO PREVENT SEED FROM BEING WASHED AWAY, CONFIRM THAT ALL REQUIRED SURFACE WATER CONTROL MEASURES HAVE BEEN INSTALLED. 3.THE SEEDBED SHOULD BE FIRM BUT NOT COMPACTED BECAUSE SOILS THAT ARE WELL COMPACTED WILL NOT VEGETATE AS QUICKLY OR THOROUGHLY. SLOPES STEEPER THAN 3H:1V SHALL BE SURFACE ROUGHENED. ROUGHENING CAN BE ACCOMPLISHED IN A VARIETY OF WAYS, BUT THE TYPICAL METHOD IS TRACK WALKING, OR DRIVING A CRAWLING TRACTOR UP AND DOWN THE SLOPE, LEAVING CLEAT IMPRINTS PARALLEL TO THE SLOPE CONTOURS. 4.IN GENERAL, 10-20-20 N-P-K (NITROGEN-PHOSPHORUS-POTASSIUM) FERTILIZER MAY BE USED AT A RATE OF 90 POUNDS PER ACRE. SLOW-RELEASE FERTILIZERS ARE PREFERRED BECAUSE THEY ARE MORE EFFICIENT AND HAVE FEWER ENVIRONMENTAL IMPACTS. IT IS RECOMMENDED THAT AREAS BEING SEEDED FOR FINAL LANDSCAPING CONDUCT SOIL TESTS TO DETERMINE THE EXACT TYPE AND QUANTITY OF FERTILIZER NEEDED. THIS WILL PREVENT THE OVER- APPLICATION OF FERTILIZER. DISTURBED AREAS WITHIN 200 FEET OF WATER BODIES AND WETLANDS MUST USE SLOW- RELEASE LOW-PHOSPHORUS FERTILIZER (TYPICAL PROPORTIONS 3-1-2 N-P-K). 5.THE FOLLOWING REQUIREMENTS APPLY TO MULCHING: a.MULCH IS ALWAYS REQUIRED FOR SEEDING SLOPES GREATER THAN 3H:1V (SEE SECTION D.2.1.2.2). b.IF SEEDING DURING THE WET SEASON, MULCH IS REQUIRED. c.THE USE OF MULCH MAY BE REQUIRED DURING THE DRY SEASON AT THE COUNTY'S DISCRETION IF GRASS GROWTH IS EXPECTED TO BE SLOW, THE SOILS ARE HIGHLY ERODIBLE DUE TO SOIL TYPE OR GRADIENT, THERE IS A WATER BODY CLOSE TO THE DISTURBED AREA, OR SIGNIFICANT PRECIPITATION (SEE SECTION D.2.4.2) IS ANTICIPATED BEFORE THE GRASS WILL PROVIDE EFFECTIVE COVER. d.MULCH MAY BE APPLIED ON TOP OF THE SEED OR SIMULTANEOUSLY BY HYDROSEEDING. 6.HYDROSEEDING IS ALLOWED AS LONG AS TACKIFIER IS INCLUDED. HYDROSEEDING WITH WOOD FIBER MULCH IS ADEQUATE DURING THE DRY SEASON. DURING THE WET SEASON, THE APPLICATION RATE SHALL BE DOUBLED BECAUSE THE MULCH AND TACKIFIER USED IN HYDROSEEDING BREAK DOWN FAIRLY RAPIDLY. IT MAY BE NECESSARY IN SOME APPLICATIONS TO INCLUDE STRAW WITH THE WOOD FIBER, BUT THIS CAN BE DETRIMENTAL TO GERMINATION. 7.AREAS TO BE PERMANENTLY LANDSCAPED SHALL USE SOIL AMENDMENTS. GOOD QUALITY TOPSOIL SHALL BE TILLED INTO THE TOP SIX INCHES TO REDUCE THE NEED FOR FERTILIZER AND IMPROVE THE OVERALL SOIL QUALITY. MOST NATIVE SOILS WILL REQUIRE THE ADDITION OF FOUR INCHES OF WELL-ROTTED COMPOST TO BE TILLED INTO THE SOIL TO PROVIDE A GOOD QUALITY TOPSOIL. COMPOST USED SHOULD MEET SPECIFICATIONS PROVIDED IN REFERENCE 11-C OF THE SWDM. 8.THE SEED MIXES LISTED BELOW INCLUDE RECOMMENDED MIXES FOR BOTH TEMPORARY AND PERMANENT SEEDING. THESE MIXES, WITH THE EXCEPTION OF THE WETLAND MIX, SHALL BE APPLIED AT A RATE OF 120 POUNDS PER ACRE. THIS RATE MAY BE REDUCED IF SOIL AMENDMENTS OR SLOW-RELEASE FERTILIZERS ARE USED. LOCAL SUPPLIERS SHOULD BE CONSULTED FOR THEIR RECOMMENDATIONS BECAUSE THE APPROPRIATE MIX DEPENDS ON A VARIETY OF FACTORS, INCLUDING EXPOSURE, SOIL TYPE, SLOPE, AND EXPECTED FOOT TRAFFIC. ALTERNATIVE SEED MIXES APPROVED BY THE COUNTY MAY BE USED. MAINTENANCE STANDARDS FOR TEMPORARY AND PERMANENT SEEDING 1.ANY SEEDED AREAS THAT FAIL TO ESTABLISH AT LEAST 80 PERCENT COVER WITHIN ONE MONTH SHALL BE RESEEDED. IF RESEEDING IS INEFFECTIVE, AN ALTERNATE METHOD, SUCH AS SODDING OR NETS/BLANKETS, SHALL BE USED. IF WINTER WEATHER PREVENTS ADEQUATE GRASS GROWTH, THIS TIME LIMIT MAY BE RELAXED AT THE DISCRETION OF THE COUNTY WHEN CRITICAL AREAS WOULD OTHERWISE BE PROTECTED. 2.AFTER ADEQUATE COVER IS ACHIEVED, ANY AREAS THAT EXPERIENCE EROSION SHALL BE RE-SEEDED AND PROTECTED BY MULCH. IF THE EROSION PROBLEM IS DRAINAGE RELATED, THE PROBLEM SHALL BE FIXED AND THE ERODED AREA RE-SEEDED AND PROTECTED BY MULCH. 3.SEEDED AREAS SHALL BE SUPPLIED WITH ADEQUATE MOISTURE, BUT NOT WATERED TO THE EXTENT THAT IT CAUSES RUNOFF. D.2.1.2.3 NETS AND BLANKETS PURPOSE EROSION CONTROL NETS AND BLANKETS ARE INTENDED TO PREVENT EROSION AND HOLD SEED AND MULCH IN PLACE ON STEEP SLOPES AND IN CHANNELS SO THAT VEGETATION CAN BECOME WELL ESTABLISHED. IN ADDITION, SOME NETS AND BLANKETS CAN BE USED TO PERMANENTLY REINFORCE TURF TO PROTECT DRAINAGE WAYS DURING HIGH FLOWS. NETS ARE STRANDS OF MATERIAL WOVEN INTO AN OPEN, BUT HIGH-TENSILE STRENGTH NET (FOR EXAMPLE, JUTE MATTING). BLANKETS ARE STRANDS OF MATERIAL THAT ARE NOT TIGHTLY WOVEN, BUT INSTEAD FORM A LAYER OF INTERLOCKING FIBERS, TYPICALLY HELD TOGETHER BY A BIODEGRADABLE OR PHOTODEGRADABLE NETTING (FOR EXAMPLE, EXCELSIOR OR STRAW BLANKETS). THEY GENERALLY HAVE LOWER TENSILE STRENGTH THAN NETS, BUT COVER THE GROUND MORE COMPLETELY. COIR (COCONUT FIBER) FABRIC COMES AS BOTH NETS AND BLANKETS. CONDITIONS OF USE EROSION CONTROL NETS AND BLANKETS SHOULD BE USED: 1.FOR PERMANENT STABILIZATION OF SLOPES 2H:1V OR GREATER AND WITH MORE THAN 10 FEET OF VERTICAL RELIEF. 2.IN CONJUNCTION WITH SEED FOR FINAL STABILIZATION OF A SLOPE, NOT FOR TEMPORARY COVER. HOWEVER, THEY MAY BE USED FOR TEMPORARY APPLICATIONS AS LONG AS THE PRODUCT IS NOT DAMAGED BY REPEATED HANDLING. IN FACT, THIS METHOD OF SLOPE PROTECTION IS SUPERIOR TO PLASTIC SHEETING, WHICH GENERATES HIGH-VELOCITY RUNOFF (SEE SECTION D.2.1.2.4). 3.FOR DRAINAGE DITCHES AND SWALES (HIGHLY RECOMMENDED). THE APPLICATION OF APPROPRIATE NETTING OR BLANKET TO DRAINAGE DITCHES AND SWALES CAN PROTECT BARE SOIL FROM CHANNELIZED RUNOFF WHILE VEGETATION IS ESTABLISHED. NETS AND BLANKETS ALSO CAN CAPTURE A GREAT DEAL OF SEDIMENT DUE TO THEIR OPEN, POROUS STRUCTURE. SYNTHETIC NETS AND BLANKETS MAY BE USED TO PERMANENTLY STABILIZE CHANNELS AND MAY PROVIDE A COST-EFFECTIVE, ENVIRONMENTALLY PREFERABLE ALTERNATIVE TO RIPRAP. DESIGN AND INSTALLATION SPECIFICATIONS 1.SEE FIGURE D.2.1.2.B AND FIGURE D.2.1.2.C FOR TYPICAL ORIENTATION AND INSTALLATION OF NETTINGS AND BLANKETS. NOTE: INSTALLATION IS CRITICAL TO THE EFFECTIVENESS OF THESE PRODUCTS. IF GOOD GROUND CONTACT IS NOT ACHIEVED, RUNOFF CAN CONCENTRATE UNDER THE PRODUCT, RESULTING IN SIGNIFICANT EROSION. 2.WITH THE VARIETY OF PRODUCTS AVAILABLE, IT IS IMPOSSIBLE TO COVER ALL THE DETAILS OF APPROPRIATE USE AND INSTALLATION. THEREFORE, IT IS CRITICAL THAT THE DESIGN ENGINEER THOROUGHLY CONSULTS THE MANUFACTURER'S INFORMATION AND THAT A SITE VISIT TAKES PLACE IN ORDER TO INSURE THAT THE PRODUCT SPECIFIED IS APPROPRIATE. 3.JUTE MATTING MUST BE USED IN CONJUNCTION WITH MULCH (SECTION D.2.1.2.2). EXCELSIOR, WOVEN STRAW BLANKETS, AND COIR (COCONUT FIBER) BLANKETS MAY BE INSTALLED WITHOUT MULCH. THERE ARE MANY OTHER TYPES OF EROSION CONTROL NETS AND BLANKETS ON THE MARKET THAT MAY BE APPROPRIATE IN CERTAIN CIRCUMSTANCES. OTHER TYPES OF PRODUCTS WILL HAVE TO BE EVALUATED INDIVIDUALLY. IN GENERAL, MOST NETS (E.G., JUTE MATTING) REQUIRE MULCH IN ORDER TO PREVENT EROSION BECAUSE THEY HAVE A FAIRLY OPEN STRUCTURE. BLANKETS TYPICALLY DO NOT REQUIRE MULCH BECAUSE THEY USUALLY PROVIDE COMPLETE PROTECTION OF THE SURFACE. 4.PURELY SYNTHETIC BLANKETS ARE ALLOWED BUT SHALL ONLY BE USED FOR LONG-TERM STABILIZATION OF WATERWAYS. THE ORGANIC BLANKETS AUTHORIZED ABOVE ARE BETTER FOR SLOPE PROTECTION AND SHORT-TERM WATERWAY PROTECTION BECAUSE THEY RETAIN MOISTURE AND PROVIDE ORGANIC MATTER TO THE SOIL, SUBSTANTIALLY IMPROVING THE SPEED AND SUCCESS OF RE-VEGETATION. MAINTENANCE STANDARDS 1.GOOD CONTACT WITH THE GROUND MUST BE MAINTAINED, AND THERE MUST NOT BE EROSION BENEATH THE NET OR BLANKET. 2.ANY AREAS OF THE NET OR BLANKET THAT ARE DAMAGED OR NOT IN CLOSE CONTACT WITH THE GROUND SHALL BE REPAIRED AND STAPLED. 3.IF EROSION OCCURS DUE TO POORLY CONTROLLED DRAINAGE, THE PROBLEM SHALL BE FIXED AND THE ERODED AREA PROTECTED. OLYMPIC PIPE LINE COMPANY LLC A A P:\0\0894126\CAD general\44\12RS UTWM Dig Sites 2019-01\12RS UTWM Dig Sites 2019-01-A_7-8.dwg TAB:S07 Date Exported: 05/19/20 - 12:10 by syiREFERENCE: CITY OF RENTON - NOTES FROM DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT. DETAILS FROM PUBLIC WORKS DEPARTMENT. APPLICATION THE FOLLOWING STANDARDS IN THIS SECTION SHALL BE FOLLOWED WHEN DOING TRENCH OR EXCAVATION WORK WITHIN THE PAVED PORTION OF ANY CITY OF RENTON RIGHT-OF-WAY. MODIFICATIONS OR EXEMPTIONS TO THESE STANDARDS MAY BE AUTHORIZED BY THE COMMUNITY AND ECONOMIC DEVELOPMENT ADMINISTRATOR, OR AUTHORIZED REPRESENTATIVE, UPON WRITTEN REQUEST BY THE PERMITTEE, THE PERMITTEE'S CONTRACTOR OR ENGINEER, AND DEMONSTRATION OF AN EQUIVALENT ALTERNATIVE. HOURS OF OPERATIONS HOURS FOR WORK WITHIN THE ROADWAY FOR ASPHALT OVERLAYS OR TRENCH RESTORATION SHALL BE AS DIRECTED BY THE TRAFFIC CONTROL PLAN REQUIREMENTS AND THE TRAFFIC OPERATIONS ENGINEER. INSPECTION THE ENGINEER MAY DETERMINE IN THE FIELD THAT A FULL STREET-WIDTH (EDGE-OF-PAVEMENT TO EDGE-OF-PAVEMENT) OVERLAY IS REQUIRED DUE TO CHANGES IN THE PERMIT CONDITIONS SUCH AS, BUT NOT LIMITED TO THE FOLLOWING: 1.THERE HAS BEEN DAMAGE TO THE EXISTING ASPHALT SURFACE DUE TO THE CONTRACTOR'S EQUIPMENT. 2.THE TRENCH WIDTH WAS INCREASED SIGNIFICANTLY OR THE EXISTING PAVEMENT IS UNDERMINED OR DAMAGED. 3.ANY OTHER CONSTRUCTION RELATED ACTIVITIES THAT REQUIRE ADDITIONAL PAVEMENT RESTORATION. CITY OF RENTON STANDARDS ALL MATERIALS AND WORKMANSHIP SHALL BE IN ACCORDANCE WITH THE CITY OF RENTON STANDARD AND SUPPLEMENTAL SPECIFICATIONS (CURRENT ADOPTED VERSION) EXCEPT WHERE OTHERWISE NOTED IN THESE STANDARDS. MATERIALS AND WORKMANSHIP ARE REQUIRED TO BE IN CONFORMANCE WITH STANDARDS FOR THE STANDARD SPECIFICATIONS FOR ROAD, BRIDGE, AND MUNICIPAL CONSTRUCTION PREPARED BY THE WASHINGTON STATE CHAPTER OF THE AMERICAN PUBLIC WORKS ASSOCIATION (APWA) AND THE WASHINGTON STATE DEPARTMENT OF TRANSPORTATION (WSDOT) AND SHALL COMPLY WITH THE CURRENT EDITION, AS MODIFIED BY THE CITY OF RENTON SUPPLEMENTAL SPECIFICATIONS. 1.AN ASPHALT PAVER SHALL BE USED IN ACCORDANCE WITH SECTION 5-04.3(3) OF STANDARD SPECIFICATIONS. A “LAYTON BOX” OR EQUAL MAY BE USED IN PLACE OF THE POWER-PROPELLED PAVER. ROLLERS SHALL BE USED IN ACCORDANCE WITH SECTION 5- 04.3(4) OF THE STANDARD SPECIFICATIONS. “PLATE COMPACTORS” AND “JUMPING JACKS” SHALL NOT BE USED IN LIEU OF ROLLERS. 2.TRENCH BACKFILL AND RESURFACING SHALL BE AS SHOWN IN THE CITY OF RENTON STANDARD DETAILS, UNLESS MODIFIED BY THE CITY PERMIT. SURFACING DEPTHS SHOWN IN THE STANDARD DETAILS ARE MINIMUMS AND MAY BE INCREASED BY THE ENGINEER TO MEET TRAFFIC LOADS OR SITE CONDITIONS. 3.REQUIREMENT FOR PATCHING, OVERLAY, AND OVERLAY WIDTHS: ALL TRENCH AND PAVEMENT CUTS SHALL BE MADE BY SAWCUT OR BY GRINDING. SAWCUTS OR GRINDING SHALL BE A MINIMUM OF ONE FOOT (1') OUTSIDE THE TRENCH WIDTH. THE TOP TWO INCHES (2") OF ASPHALT SHALL BE GROUND DOWN TO A MINIMUM DISTANCE OF ONE FOOT (1') BEYOND THE ACTUAL OUTSIDE EDGES OF THE TRENCH AND SHALL BE REPLACED WITH TWO INCHES (2") OF CLASS B ASPHALT, PER CITY OF RENTON STANDARD PLANS. AT THE DISCRETION OF THE ENGINEER, A FULL STREET WIDTH OVERLAY MAY BE REQUIRED. LANE-WIDTH OR A FULL STREET-WIDTH OVERLAY WILL BE DETERMINED BASED UPON THE LOCATION AND LENGTH OF THE PROPOSED TRENCH WITHIN THE ROADWAY CROSS-SECTION. CHANGES IN FIELD CONDITIONS MAY WARRANT IMPLEMENTATION OF ADDITIONAL OVERLAY REQUIREMENTS. a.TRENCHES (ROAD CROSSINGS): (1)THE MINIMUM WIDTH OF A TRANSVERSE PATCH (ROAD CROSSING) SHALL BE SIX AND ONE-HALF FEET (6.5'). SEE CITY OF RENTON STANDARD PLANS. (2)ANY AFFECTED LANE WILL BE GROUND DOWN TWO INCHES (2") AND PAVED FOR THE ENTIRE WIDTH OF THE LANE. (3)THE PATCH SHALL BE A MINIMUM OF ONE FOOT (1') BEYOND THE EXCAVATION AND PATCH LENGTH SHALL BE A MINIMUM OF AN ENTIRE TRAVELED LANE. (4)IF THE OUTSIDE OF THE TRENCHING IS WITHIN THREE FEET (3') OF ANY ADJACENT LANE LINE, THE ENTIRE ADJACENT TRAVELED LANE AFFECTED WILL BE REPAVED. (5)AN AREA INCLUDING THE TRENCH AND ONE FOOT (1') ON EACH SIDE OF THE TRENCH BUT NOT LESS THAN SIX AND ONE- HALF FEET (6.5') TOTAL FOR THE ENTIRE WIDTH OF THE AFFECTED TRAVELED LANES WILL BE GROUND DOWN TO A DEPTH OF TWO INCHES (2"). A TWO-INCH (2") OVERLAY OF CLASS B ASPHALT WILL BE APPLIED PER CITY STANDARDS. b.TRENCHES RUNNING PARALLEL WITH THE STREET: (1)THE MINIMUM WIDTH OF A LONGITUDINAL PATCH SHALL BE FOUR AND ONE-HALF FEET (4.5'). SEE CITY OF RENTON STANDARD PLANS. (2)IF THE TRENCHING IS WITHIN A SINGLE TRAVELED LANE, AN ENTIRE LANE-WIDTH OVERLAY WILL BE REQUIRED. (3)IF THE OUTSIDE OF THE TRENCHING IS WITHIN THREE FEET (3') OF ANY ADJACENT LANE LINE, THE ENTIRE ADJACENT TRAVELED LAND AFFECTED WILL BE OVERLAID. (4)IF THE TRENCHING IS GREATER THAN OR EQUAL TO 30% OF LANE PER BLOCK (660 FOOT MAXIMUM BLOCK LENGTH), OR IF THE TOTAL PATCHES EXCEED 12 PER BLOCK, THEN THE LANES AFFECTED WILL BE OVERLAID. MINIMUM OVERLAY SHALL INCLUDE ALL PATCHES WITHIN THE BLOCK SECTION. (5)THE ENTIRE TRAVELED LANE WIDTH FOR THE LENGTH OF THE TRENCH AND AN ADDITIONAL TEN FEET (10′) AT EACH END OF THE TRENCH WILL BE GROUND DOWN TO A DEPTH OF TWO INCHES (2′′). A TWO-INCH (2′′) OVERLAY OF CLASS B WILL BE APPLIED PER CITY STANDARDS. 4.PAVEMENT REMOVAL IN LIEU OF GRINDING: THE CONTRACTOR IN ALL CASES CAN REMOVE THE PAVEMENT IN THE REPLACEMENT AREA INSTEAD OF GRINDING OUT THE SPECIFIED TWO INCHES (2") OF ASPHALT. FULL PAVEMENT REPLACEMENT TO MEET OR EXCEED THE EXISTING PAVEMENT DEPTH WILL BE REQUIRED FOR THE AREA OF PAVEMENT REMOVAL. PATCHING OF PERVIOUS CONCRETE SHALL FOLLOW AMERICAN CONCRETE INSTITUTE (ACI) 522.1-13. POROUS ASPHALT SHALL BE SPECIFIED ON A PROJECT-BY-PROJECT BASIS BY THE ENGINEER. PERMEABLE MATERIALS SHOULD BE REPLACED IN-KIND WHERE FEASIBLE. PATCHING POROUS ASPHALT WITH CONVENTIONAL ASPHALT IS ACCEPTABLE IF IT IS NO MORE THAN TEN PERCENT (10%) OF THE TOTAL FACILITY AREA OR DOES NOT IMPACT THE OVERALL FACILITY FUNCTION. APPROPRIATE PRECAUTIONS SHALL BE TAKEN DURING PAVEMENT REPAIR AND REPLACEMENT EFFORTS TO PREVENT CLOGGING OF ADJACENT SURFACES. 5.TRENCH BACKFILL AND RESTORATION CONSTRUCTION REQUIREMENTS: a.TRENCH RESTORATION SHALL BE EITHER BY A PATCH OR OVERLAY METHOD, AS REQUIRED AND INDICATED ON CITY OF RENTON STANDARD PLANS. b.ALL TRENCH AND PAVEMENT CUTS, WHICH WILL NOT BE OVERLAID, SHALL BE MADE BY SAWCUT OR GRINDING. SAWCUTS SHALL BE A MINIMUM OF TWO FEET (2') OUTSIDE THE EXCAVATED TRENCH WIDTH. c.ALL TRENCHING WITHIN THE TOP FOUR FEET (4') SHALL BE BACKFILLED WITH CRUSHED SURFACING MATERIALS CONFORMING TO SECTION 4-04 OF THE STANDARD SPECIFICATIONS. ANY TRENCHING OVER FOUR FEET (4') IN DEPTH MAY USE MATERIALS APPROVED BY THE ENGINEER OR MATERIALS LAB FOR BACKFILLING BELOW THE FOUR-FOOT (4') DEPTH. d.IF THE EXISTING MATERIAL (OR OTHER MATERIAL) IS DETERMINED BY THE ENGINEER TO BE SUITABLE FOR BACKFILL, THE CONTRACTOR MAY USE THE NATIVE MATERIAL EXCEPT THAT THE TOP SIX INCHES (6") SHALL BE CRUSHED SURFACING TOP COURSE MATERIAL. e.THE TRENCH SHALL BE COMPACTED TO A MINIMUM NINETY-FIVE PERCENT (95%) DENSITY, AS DESCRIBED IN SECTION 2- 03 OF THE STANDARD SPECIFICATIONS. IN THE TOP SIX FEET (6') OF ANY TRENCH, BACKFILL COMPACTION SHALL BE PERFORMED IN EIGHT (8) TO TWELVE-INCH (12") LIFTS. ANY TRENCH DEEPER THAN SIX FEET (6') MAY BE COMPACTED IN TWENTY-FOUR INCH (24") LIFTS, UP TO THE TOP SIX-FOOT (6') ZONE. ALL TRENCH BACKFILL SHALL BE FIRM AND UNYIELDING BUT IN NO CASE SHALL BE COMPACTED TO MORE THAN NINETY-TWO PERCENT (92%) OF MAXIMUM DENSITY IN PERMEABLE PAVEMENT AREAS. f.ALL COMPACTION SHALL BE PERFORMED BY MECHANICAL METHODS. THE COMPACTION TESTS MAY BE PERFORMED IN FOUR-FOOT (4') VERTICAL INCREMENTS MAXIMUM. THE TEST RESULTS SHALL BE GIVEN TO THE ENGINEER FOR REVIEW AND APPROVAL PRIOR TO PAVING. THE NUMBER AND LOCATION OF TESTS REQUIRED SHALL BE DETERMINED BY THE ENGINEER. d.TEMPORARY RESTORATION OF TRENCHES FOR OVERNIGHT USE SHALL BE ACCOMPLISHED BY USING MC MIX (COLD MIX), ASPHALT TREATED BASE (ATB), OR STEEL PLATES, AS APPROVED BY THE ENGINEER. ATB USED FOR TEMPORARY RESTORATION MAY BE DUMPED DIRECTLY INTO THE TRENCH, BLADED OUT AND ROLLED. AFTER ROLLING, THE TRENCH MUST BE FILLED FLUSH WITH ASPHALT TO PROVIDE A SMOOTH RIDING SURFACE. IF THE TEMPORARY TRENCH RESTORATION DOES NOT HOLD UP, THE CONTRACTOR SHALL REPAIR THE PATCH WITHIN EIGHT HOURS OF BEING NOTIFIED OF THE PROBLEM BY THE CITY. THIS REQUIREMENT APPLIES 24 HOURS PER DAY, SEVEN DAYS PER WEEK. IN THE EVENT THAT THE CITY DETERMINES TO REPAIR THE TEMPORARY PATCH, THE CONTRACTOR SHALL REIMBURSE THE CITY IN AN AMOUNT THAT IS DOUBLE THE CITY'S COSTS IN REPAIRING THE PATCH, WITH THE SECOND HALF OF THE REIMBURSEMENT TO REPRESENT CITY OVERHEAD AND HIDDEN COSTS. e.ASPHALT CONCRETE CLASS E OR CLASS B SHALL BE PLACED TO THE COMPACTED DEPTH AS REQUIRED AND INDICATED ON CITY OF RENTON STANDARD PLANS OR AS DIRECTED BY THE ENGINEER. THE GRADE OF ASPHALT SHALL BE AR-4000W. THE MATERIALS SHALL BE MADE IN CONFORMANCE WITH SECTION 9-02.1(4) OF THE STANDARD SPECIFICATIONS. f.TACK COAT SHALL BE APPLIED TO THE EXISTING PAVEMENT AT EDGE OF SAW CUTS AND SHALL BE EMULSIFIED ASPHALT GRADE CSS-1, AS SPECIFIED IN SECTION 9-02.1(6) OF THE STANDARD SPECIFICATIONS. TACK SHALL BE APPLIED AS SPECIFIED IN SECTION 5-04 OF THE STANDARD SPECIFICATIONS. g.ASPHALT CONCRETE CLASS E OR CLASS B SHALL BE PLACED IN ACCORDANCE WITH SECTION 5-04 OF THE STANDARD SPECIFICATIONS; EXCEPT THOSE LONGITUDINAL JOINTS BETWEEN SUCCESSIVE LAYERS OF ASPHALT CONCRETE SHALL BE DISPLACED LATERALLY A MINIMUM OF TWELVE INCHES (12"), UNLESS OTHERWISE APPROVED BY THE ENGINEER. FINE AND COARSE AGGREGATE SHALL BE IN ACCORDANCE WITH SECTION 9-03.8 OF THE STANDARD SPECIFICATIONS. ALL STREET SURFACES, WALKS OR DRIVEWAYS WITHIN THE STREET TRENCHING AREAS SHALL BE FEATHERED AND SHIMMED TO AN EXTENT THAT PROVIDES A SMOOTH-RIDING CONNECTION AND EXPEDITIOUS DRAINAGE FLOW FOR THE NEWLY PAVED SURFACE. FEATHERING AND SHIMMING SHALL NOT DECREASE THE MINIMUM VERTICAL CURB DEPTH BELOW FOUR INCHES (4") FOR STORM WATER FLOW. THE ENGINEER MAY REQUIRE ADDITIONAL GRINDING TO INCREASE THE CURB DEPTH AVAILABLE FOR STORM WATER FLOW IN AREAS THAT ARE INADEQUATE. SHIMMING AND FEATHERING AS REQUIRED BY THE ENGINEER SHALL BE ACCOMPLISHED BY RAKING OUT THE OVERSIZED AGGREGATES FROM THE CLASS B MIX AS APPROPRIATE. SURFACE SMOOTHNESS SHALL BE PER SECTION 5-04.3(13) OF THE STANDARD SPECIFICATIONS. THE PAVING SHALL BE CORRECTED BY REMOVAL AND REPAVING OF THE TRENCH ONLY. ASPHALT PATCH DEPTHS WILL VARY BASED UPON THE STREETS BEING TRENCHED. THE ACTUAL DEPTHS OF ASPHALT AND THE WORK TO BE PERFORMED SHALL BE AS REQUIRED AND INDICATED ON CITY OF RENTON STANDARD PLANS. COMPACTION OF ALL LIFTS OF ASPHALT SHALL BE A MINIMUM NINETY-TWO PERCENT (92%) OF DENSITY AS DETERMINED BY WSDOT TEST METHOD 705. THE NUMBER OF TESTS REQUIRED SHALL BE DETERMINED BY THE ENGINEER. TESTING SHALL BE PERFORMED BY AN INDEPENDENT TESTING LAB WITH THE RESULTS BEING SUPPLIED TO THE ENGINEER. TESTING IS NOT INTENDED TO RELIEVE THE CONTRACTOR FROM ANY LIABILITY FOR THE TRENCH RESTORATION. IT IS INTENDED TO SHOW THE INSPECTOR, AND THE CITY, THAT THE RESTORATION MEETS THESE SPECIFICATIONS. h.ALL JOINTS, EXCEPT THOSE ASSOCIATED WITH PERMEABLE PAVEMENT, SHALL BE SEALED USING PAVING ASPHALT AR- 4000W. i.WHEN TRENCHING WITHIN THE UNPAVED ROADWAY SHOULDER(S), THE SHOULDER SHALL BE RESTORED TO ITS ORIGINAL CONDITION, OR BETTER. j.THE FINAL PATCH SHALL BE COMPLETED AS SOON AS POSSIBLE AND SHALL NOT EXCEED FIFTEEN (15) WORKING DAYS AFTER FIRST OPENING THE TRENCH. THIS TIME FRAME MAY BE ADJUSTED IF DELAYS ARE DUE TO INCLEMENT PAVING WEATHER OR OTHER ADVERSE CONDITIONS THAT MAY EXIST. HOWEVER, DELAYING OF FINAL PATCH OR OVERLAY WORK IS SUBJECT TO THE ENGINEER'S APPROVAL. THE ENGINEER MAY DEEM IT NECESSARY TO COMPLETE THE WORK WITHIN THE FIFTEEN (15) WORKING DAY TIME FRAME AND NOT ALLOW ANY TIME EXTENSION. SHOULD THIS OCCUR, THE CONTRACTOR SHALL PERFORM THE NECESSARY WORK, AS DIRECTED BY THE ENGINEER. k.A CITY OF RENTON TEMPORARY TRAFFIC CONTROL PLAN (FROM RENTON TRANSPORTATION ENGINEERING) SHALL BE SUBMITTED AND APPROVED BY THE ENGINEER A MINIMUM OF THREE (3) WORKING DAYS PRIOR TO COMMENCEMENT OF WORK. 6.REMOVAL OF UTILITY LOCATE MARKINGS FROM SIDEWALKS REQUIRED: THE PERMITTEE WILL BE REQUIRED TO REMOVE UTILITY LOCATE MARKS ON SIDEWALKS ONLY WITHIN THE CENTER DOWNTOWN ZONE. THE PERMITTEE SHALL REMOVE THE UTILITY LOCATE MARKS WITHIN 14 DAYS OF JOB COMPLETION. OLYMPIC PIPE LINE COMPANY LLC A A P:\0\0894126\CAD general\44\12RS UTWM Dig Sites 2019-01\12RS UTWM Dig Sites 2019-01-A_8-8.dwg TAB:S08 Date Exported: 05/19/20 - 12:25 by syiREFERENCE: CITY OF RENTON - DETAILS FROM PUBLIC WORKS DEPARTMENT.