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HomeMy WebLinkAboutR-425414A PORTION OF THE NW 1/4 OF SECTION 19, TOWNSHIP 23 NORTH, RANGE 5 EAST, W.M., KING COUNTY, WASHINGTON LO N 0 w I- DocuSign Envelope ID: 301934D3-7EOA-475C-AE)03.4329FF£OCIOS SURFACE WATER STANDARD PLAN ROTES: THE FOLLOWING IS A LISTING OF GENERAL NOTES THAT SHALL BE INCORPORATED IN THE dRNMAI{3E PLAN SET. ALL THE MOTES ON THE LISTMAY MOT PERTARI TO EVERY PROJECT. THE APPLKCANTOR OWNER, HEREBY REFERRED TO AS APPLICANT, MAY STRIKEOUT IRRELEVANT NOTES IF NOT APPLICABLE TO THE PROJECT, HOWEVER, THE APPLICANT SHALL NOT RENUTASER NOR EDT7T4E REMAINING NOTES. IF ADDITIONAL NOTES ARE NEEDED FOR SPECIFIC ASPECTS, THEY SHALLSE ADDED AFTER THE SURFACE WATER STANDARD PLAN NOTES. 1 BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCOURS.A PRE -CONSTRUCTION MEETING SHALL BE HELD AMONG THE CITY OF RENTON, HEREBY REFERRED TD AS THE CITY, THE APPLICANT, AND THE APPLICANT'S CONTRACTOR- 2. THE APPLICANT SHALL BE RESPONSIBLE FOR SECURING ALLNECESSARY CITY STATE. AND FEDERAL PERMITS PWRT13 CONSTRUCTION. 3. ALL STORM DRAINAGE IMPRCIVEMEN79 SHALLSE DESIGNED AND CONSTRUCTED IN ACCORDANCE WITH THE LATEST €DRION OF THE CITY OF RENTON SURFACE WATER DESIGN MANUAL (RENTON 5WDMK RENTON MLRBCFAL CODE KRMCL. AND THE STANDARD SPECIFICATIONS FOR ROAD. SRIDGE AND MUNICIPAL CONSTRUCTION PREPAREO BY WSDOT AND THE ALERICAN PUBLIC W40RKSASSOCIATION (APWAA.. IT SHALL OF THE SOLE RESPONSIBILITY OF THE APPLICANT TO OORRECTANY ERROR. OMISSION. OR VARIATION FROM THE ABOVE REQUIREMENTS FOUND IN THE PLANS. ALL CORRECTIONS SHALL BE AT NO ADDITIONAL COST TO THE CITY. 4. APPROVAL OF THE ROAD, GRADING, PARKING, BUILDING, AND DRAINAGE PLAN DOES NOT CONSTITUTE AS APPROVAL OF ANY OTHER CONSTRUCTION (EG. WATER, SEWER- DAS, ELECTRICAL. ETC.) PLANS FOR STRUCTURES SUCH AS BRIDGES, VAULTS, AND RETAINING WALLS REOIRRE ASEPARATE REVIEW AND APPROVAL BY THE CITY PRIOR TO CONSTRUCTION. THE SURFACE WATER DRAINAGE SYSTEM SHALL BE CONSTRUCTED ACCORDING TO THE APPROVED PLANS ANY DEVIATION FROM THE APPROVED PLANS WILL R€CIUIRE COORDINATION FULLOW€D BY WRITTEN APPROVAL FROM THE CITY. S. A COPY OF THE APPROVED PLANS SHALL BE ON THE JOB SITE WHENEVER CONSTRUCTION IS IN PROGRESS. 0. THE LOCATIONS OF ALL EXISTING UTILITIES SHOWN HEREON HAVE BEEN ESTAALISHEO BY FIELD SURVEY OR OBTAINED FROM AVAILABLE RECORDS AND SHALL THEREFORE BE CDNSIDEREO APPROXIMATE ONLY AND NOT NECESSARILY COMPLETE_ IT IS THE SOLE RESPONSIBILITY -OF THE APPLICANT AND THE APPLH`ANTS CONTRACTOR TO INDEPENDENTLY VERIFY THE ACCURACY OF ALL UTILITY LOCATIONS SHOWN, ARID TO FURTHER. DISCOVER AND AVOID ANY OTHER UTILITIES NOT SHOWN HEREON THAT MAY BE AFFECTED BY THE IMPLEMENTATION OF THIS PLAN. THE APPLICANT $HALL RECORD ON THE A"JILT DRAWINGS ALL UNDOCUMENTED UTILITIES DISCOVERED AND ANY CHANGES TOTrE APPROVED PLANS. THE APPLICANT SHALL IMMFDIATELY NOTIFY THE ENGINEER OF RECORD IF CONFLICT EXISTS. 7. VERTICAL DATUM SHALL BE NAVD BS AMC HORIZONTAL DATUM SHALL BE NAD B3 (WA. STATE PLANE, NDRTHX UNLESS OTHERWISE APPROVED BY THECTTY. REFERENCE BENCHMARK. DATUM. ANDELEvAT70NS SHALL BE NOTED ON THE PLANS. B. ALL UTILI TY TRENCH BACKF ILL AND ROADWAY SUBORADE SHALL BE COMPACTED TO 95% MAXIMUM DAY DENSITY PER SECT" 2-93,3414)D - 00WACTION AND M015TURE CONTROL TESTS OF THE WSDOT STAIDAAD SPfCIFICdTIONS. IN PERMEABLE. PAVEMENT AND OTHER INFILTRATION AREAS. ALL TRENCH SAGKFILL SHALL BE,FIRM AND UNYIELDING BUT IN NO CASE SHALL BE COMPACTED TO MORE THAN 929E DF MAKINJM DRY DENSITY. 9. OPEN CUTTING OF EXISTING ROADWAYS FUR STORM DRAINAGE WORK IS NUT ALLOWED UNLESS SPECFICALLY APPROVED BY THE CITY AND NOTED ON THESE APPROVED PLANS. ANY OPEN CUT SHALL BE RESTORED IN ACCORDANCE WITH THE CITY TRENCH RESTORATION STANDARDS. 10. ALL PIPE ANDSTRUCTURES SHALL BE STAKED FOR SURVEY LINE AND GRADE PRIOR TO THE START OF CONSTRUCTION. WHERE SHOWN ON THE PLANS OR WHERE 00tECTED BY THE CITY. THE EXISTING MANHOLES_ CATCH BASINS_ OR INLETS SHALL BE ADJUSTED TC THE GRADE AS STAKED 11. ALL FLOW CONTROL FACILITIE i 5HALL BE INSTALLED AND IN OPERATION PRIORI TO, OR IN DONJL04CTION WITH. ANY CONISTR.UCTICN ACTIVITY UNLESS OTHERPA5E APPRQVrD BY THE CITY. Q. ALL PIPE AHDAPPURTENANCES SHALL BE LAID ON A PROPERLY PRE.PAREO FOUNDATION IN A*CAR1iANICE VATIH T'HE CURRENT STATE OF WASHINGTON STANDARD SPECIFICATION FOR ROAD AND BRIDGE CONSTRUCTION. THIS SHALL INCLUDE NECESSARY LEVFLNGOF THE TRENCH BOTTOM OR THE TOP OF THE FOUNDATION MATERIAL, AS WELL AS PLACEMENT AND COMPACTION OF REQUITED BEDDING MATERIAL TO UNIIFORi GRADE SO THAT THE ENTIRE LENGTH OF THE PIPE WALL BE SUPPORTED ON A UNIFORMLY DENSE. UNYIELDING BASE, ALL PIPE BEDDING AND BACKF%L SHALL BE AS SHOWN ON THE CITY STANDARD FLAN 22000, 220,%AND 22020. 13. STEEL PIPE SHALL BE ALUMINIMD, OR GALVANIZED WITH ASPHALT TREATMENT 1, 2, OR S INSIDE AND DUI - 14. ALL DRAINAGE STRUCTURES SUCH AS CATCH BASINS AND MANHOLES SHALL BE FITTED WITH DUCTILE IRON, BOLTT-OCKING LIDS PER THE CITY STANDARD PLAN 2DL.i D, 204-20, 204.50, 284.40, AND 201,SO. STRUCTURES SHALL HAVE . RECTANGULAR OR ROUND. SOLID LIDS WHEN NOTCOLLECTINO RUNOFF. AND OU7110E OF THE ROADWAY, • ROUND, SOLID LIDS WHEN NOT COLLECTING RUNOFF, AND LOCATED WITHIN THE ROADWAY, BUT OUTSIDE OF THE CURBIGUTTER LINE. • ROUND_ SOLID LIDS DISPLAYING THE CITY LOGO WHEN WITHIN THE PUBLIC RIGHT-CF-WAY OR IN AN EASEMENT TO THE CITY PRIVATE STRUCTURE LIDS OU751DE PUBLIC RIGHT-OF-WAY AND EASEMENTS TO TIE CITY SHALL NOT DISPLAY THE CITY LOGO. 15. BUILDINGS AND OTHER STRUCTURES SHALL BE PLACED IN ACCORDANCE- WITH TABLE 4,1 EASEMENT WIDTHS A4DOUILDING SETBACKS LINES OF THE RE14TON SWQM. 16, LIDS OF MANHOLESICATCH BASINS WITHIN PUBLIC RIGHT-OF-WAY SHALL NOT BE ADJUSTED TO FINAL GRADE UNTIL AFTER PAVING, ALL MANHOLE7CATCH BASIN RIMS SHALL BE ADJUSTED TO BE FLUSH WITH FINAL FINISHED GRADES, UNLESS OTHERWISE SHOWN. ALL DRIVEWAY CULVERTS LOCATED WITHIN CITY RIGHT.OF.WAY SHALL BE OF SUFFICIENTLENGTH TO PROVIDE A MINIMUM 3'1 SLOPE FROM THE EOGE OFTHE DRIVEWAY TO THE BOTTOM DF THE DITCH, UNLH907HEF0NISE NOTHb, i7NAWINE13NOT TO SfAEF INTiI STD. PLAN - 267.00 _� PUBLIC WORKS SURFACE WATER STANDARD PLAN ;1,-T6T�,u, 11�� DEPARTMENT NOTES (1 OF 2) artin Pastucha8/13/2020 ±iif_asea n DATE 1 8:4P DocuSign Envelope ID: 301034D3-7EOA-475C-AQ03.4329FFEOCIOB SURFACE WATER STANDARD PLAN ROTES: THE FOLLOWING IS A LISTING OF GENERAL NOTES THAT SHALL@E INCORPORATED IN THE dRNNA43E PLAN SET. ALL THE MOTES ON THE LIST MAY NOT PERTAIN TO EVERY PROJECT. THE APPUICANTOR OWNER, HEREBY REFERRED TOAS APPLICANT, MAY STRIKE OUT IRRELEVANT NOTES IF NOT APPLICABLE TO THE PROJECT, HOWEVER, THE APPLICANT SHALLNOT RENUMBER NOR EDIT THE REMAKING NOTES- IF ADDITIONAL NOTES ARE NEEDED FOR SPECIFIC ASPECTS, THEY SHALLRE ADDED AFTER THE SURFACE WATER STANDARD PLAN NOTES. 1s. ROCK FOR EROSION PROTECTION OF ROADSIDE DITCHES. WHERE REOUIRED, SHALL BE OF SOUND QUARRY ROCK PLACED TOA MINIMUM DEPTH OF ONE (1) FOOT AND SHALL MEETTHE FOLLOWNGSPECIFICATIONS: . 4 - B INCH BACK 1 10 - 717% PASSING: • 2•4INCH ROCK180•40% PASSING: AND • LESS THAN 2INCH ROCK 119 - 20% PASSING, 19. FOOTING DRAINAGE SYSTEMS AMID ROOF DOWNSPOUT SYSTEMS SHALL NOT BE INTERCONNECTED AND SHALL SEPARATELY CONVEY COLLECTED FLOWS TO THE CONVEYANCE SYSTEM OR FLOW CONTROL FACILITY ON THE SITE. UNLESS APPROVED BY THE CITY. FOOTING OTIAINS SHALL NOT BE CONNECTED TO ON -SITE ®NAPS. 20, THE END OF EACH STORM DRAIN STUB SHALL BE CAPPED. A CLEANOUT TOPPED WITH BOLT -LOOMING LID MARKED 'STORM* 09 'DRAIN'SHALL BE LOCATED AT THE PROPERTY LINE OR AT THE POINT OF C04NECTION OF A PRIVATE STORM DRAINAGE CONVEYANCE SYSTEM PER THE CITY STANDARD PLAN 227.D3, J1 ALL STORM SYSTEM EXTENSIONS$HALL BE STAKED VCR LINE AND GRADE BY ASURVEYOR LICENSED IN WASHINGTQN STATE:.ANP CUT SHEETS SHALL 96 PR(NIPEO TO THE CITY PRIOR TO CONSTRUCTION. 22_ ALL MELN.Y.INS.TALLED AND NFWVLY.RFHARNJTATED (PUBLIC AND PRTUATEH STORMCONVEYANCF SYSTEMS SHALL RE INSPECTED BY MEANS OF REMOTE CCTV ACCORDING TO THE CITY STANDARD PLAN 260.OD. CCTV INSPECTIONS AND REPORTS SHALL BE SUBMITTED TO THE CITY PRIORT7 RECEIVING APPROVAL TO INSTALL PROJECT CURBS. GUTTERS ANDVOR PAVIEMENT. 23. ALL STORM SYSTE415 AND CONNECTIONS TO EXISTING MAINS SHALL BE TETED IN ACCORDANCE WITH SECTOUN 744.311) OF THE WSEOT STANDARD SPECIFICATIONS AND IN THE PRESENCE CF A REPRESENTATIVE OF THE CITY STORM DRAIN STUBS SHALL BE TESTED FOR ACCEPTANCE AT THE SAME TIAE THE MAIN. STORM IS TESTED. 24. FOR ALL DISTURBED PERVIOUS AREAS (COMPACTED. GRADED. LANDSCAPED. ETC.) OF THE DEVELOPMENT SITE, TO MAINTAIN THE MOISTURE CAPACITY OF THE SOIL EITHER STOCKPILE AND REU15TRIBUTE THE BASTING GUFF LAYER AND NATIVE TOPSOIL OR AMEND THE 5UIL WITH LC"PU5T IN ACCORDANCE WITH STANDARD PLAN 26400. 25. ISSUANCE OF'THE SUILDINGOR CONSTRUCTION PERMITS BY THE CITY DOES NOT RELIEVE THE APPLICANT OF THE CONTINUING LEGAL OBLIGATION AMMR LMABLITY CONNECTED WITH STORMWATER DISPOSAL. THE CITY DOES NOT ACCEPT ANY OBLIGATION FOR THE PROPER FUNCTIONING AND MAINTENANCE OF THE STURM SYSTEM PROVIDED DURING CONSTRUCTION, 26. ADEOUATE SAFEGUARDS, SAFETY DEVICES, PROTECTIVE EQUIPMENT. FLAUGER3, ANO ANY OTHER ACTIONS NEEDED TO PROTECT THE LEE, HEALTH, AND SAFETY OF THE PUBLIC. AND TO PROTECT PROPERTY IN DONNEDTION WITH THE PERFORMANCE OF WORK SHALL BE PROVIDED. ANY WORK WITHIN THE TRAVFLED RIGHT-QF-WAY THAT MAY INTERRUPT NORMAL TRAFFIC FLOW SHALL REQUIREATRAFFIC CONTROL PLAN APPROVED BY THE CITY. ALL SECTIONS OF THE WSDOT STANDARD SPECIFICATIONS 1.10 TEMPORARY TRAFFIC CONTROL SHALL APPLY. 27_ PROJECTS LOCATED WITHINTIF CITY'SAOUIFFR PROTECTION AREA IAPAI SNAIL COMPLY WITH SPECIAL REQUIREMENT NO CE THE RENTON SWDM AND AQUIFER PROTECTION REGULATIONS;RNIC4-}7i0I. 26. PLACEMENT OF SURFACE APPURTENANCES fCATCH EASIWMANHOLE LIDS. CLEANOUTS, INLETS. ETC.) IN THE STREET TRAVEL LAME WHEEL PATH, INTERSECTIONS OF STREET TRAVEL LANES, BIKE LANES. SIDEWALKS. AND CROSSWALKS SHALL BE AVOIDED WHENEVER POSSIBLE, ANY SURFACE APPURTENANCE PLACED IN SICFWAAK OR CRO$SWALKSHALL RE FITTED WVM A NONSLIP OR NON-SKID LID PERADAREOUIREMENTS. 29. CLPJARLY LABEL PUBLIC AID PR VATS 5YSTRAS ON THE PLANS. PRFVATIE SYSTEMS SHALL BE MAINTAINED BY THE APPLICANT . MINIMUM COVER OVER STORM DRAINAGE PIPE SHALL CONFORM TO TABLE 4.2.1A2 OF THE RENTON SWDM m CONSTRUCTED PERMEABLE PAVEMENT SHALL BE PERMEABLE ENOUGH TOAB"11 WATER AT A MINIMUM RATE OF 201NCRES PER HOUR IMMEDIATELY AFTER THE PAVEMENT SLRFACE HAS BEENWETTED CONTINUOUSLY FOR AT LEAST 10 MINUTES. COMPLIANCE WITH THIS MINIMUM RATE SHALL BE CHECKED PRIOR TO DONSTRUCTION APPROVAL OF THE PAVEMENT. COMPLIANCE MAY BE CHECKED USING A SIMPLE BUCKET TEST IN WHICH 5 GALLONS OF WATER IS POURED ONTO THE PAVEMENT SURFACE ALL AT ONCE_ IF ONLY A MINOR AMOUNT Of WATER. PONDS OR RUNS OFF THE SIITFACF. THEN THE PAVEMENT IS CONSIDERED 7O MEET THE MINIMUM RATE OF ABSORPTICNAT LEAST ONE TEST SHALL BE CONDUCTED PER 1,006 SQUARE FEET OF PERMEABLE PAVEMENT, IF THIS TEST IS NOT CONCLUSIVE, THEN ANOTHER TEST PER ASTM CI701 SHALL BE CONDUCTED. FOR LARGE AREAS IE. G.. PARKING AREASK TESTING OBSERVATION MAY BE ACCOMPLISHED WHILE WALKING BEHIND A SLOWLY MOVING WATER TRUCK MrHIA.ROIN6 WATER AT A RATE SIMILAR TO THE BUCKET TEST PERMEABLE PAYERS SHALL BE TESTED USING ASTM C7781. UNLESS OTHEkwISE ACTH b, bAAWINE M NOT TO Sb UE INT51 STD. PLAN - 267.10 VRIPUBLIC WORKS SURFACE WATER STANDARD PLAN cmww"i,, DEPARTMENT /13/2020 NOTES (2 OF 2) actin Pastuch ... s.I.iiiFpapwws DATE • Call 811 • m two business days before you dig NO. REVISION STORM PIPE NOTES STORM DRAIN (SD) GRAVITY SYSTEM SHALL BE CONSTRUCTED OF THE FOLLOWING MATERIALS AND AS NOTED ON PLANS: 1. CORRUGATED POLYETHYLENE PIPE (CPEP) AND FITTINGS: SHALL BE DUAL WALL AND COMPLY WITH WSDOT 9-05.20 REQUIREMENTS. 2. POLYVINYL CHLORIDE PIPE (PVC) AND FITTINGS: SHALL BE SOLID WALL AND COMPLY WITH WSDOT 9-05.12 REQUIREMENTS. 3. STORM DRAINS SHALL BE INSTALLED PER CITY OF RENTON STD PLAN 220.00/C3.3 AND STD PLAN 220.10/C3.3. 4. GRAVITY STORMWATER SYSTEM SHALL BE LOW PRESSURE AIR TESTED IN ACCORDANCE WITH WSDOT STANDARD SPECIFICATION 7-04.3(1)F. AT THE OWNER'S DISCRETION, PIT DRAINS, MANHOLES, VAULTS OR OTHER ANCILLARY PIPE SYSTEMS MAY BE HYDROSTATICALLY TESTING TO THE OWNER'S SATISFACTION (E.G. PLUG PIPES, FILL STRUCTURE TO SET ELEVATION WITH WATER, AND OBSERVE WATER LEVEL DEVIATION OVER A SET PERIOD OF TIME). EXCAVATION NOTES 1. EXCAVATE TO ELEVATIONS, LINES AND GRADES INDICATED TO NOT MORE THAN 1/2-INCH ABOVE OR BELOW THAT REQUIRED. 2. SLOPE SIDES OF EXCAVATION AS INDICATED OR COMPLY WITH LOCAL CODES AND ORDINANCES HAVING JURISDICTION, WHICHEVER IS MORE STRINGENT. SHORE AND BRACE WHERE SLOPING IS NOT POSSIBLE BECAUSE OF SPACE RESTRICTIONS OR STABILITY OF MATERIAL EXCAVATED. 3. STOCKPILE SATISFACTORY EXCAVATED MATERIALS WHERE DIRECTED UNTIL REQUIRED FOR BACKFILL OR FILL. PLACE, GRADE AND SHAPE STOCKPILES FOR PROPER DRAINAGE. LOCATE AND RETAIN SOIL MATERIALS AWAY FROM EDGE OF EXCAVATIONS. 4. DISPOSE OF EXCESS SOIL AND UNSUITABLE SOIL MATERIAL OFF -SITE AS DIRECTED. SUBGRADE PREPARATION NOTES 11]ON1*'7:1110MII1/1TiTMFWTlILIIIII SUBGRADE PREPARATION: ALL SOIL SUBGRADES SHOULD BE THOROUGHLY COMPACTED, THEN PROOF -ROLLED WITH A LOADED DUMP TRUCK OR HEAVY COMPACTOR. ANY LOCALIZED ZONES OF YIELDING SUBGRADE DISCLOSED DURING THIS PROOF ROLLING OPERATION SHOULD BE OVER EXCAVATED TO A MAXIMUM DEPTH OF 12 INCHES AND REPLACED WITH A SUITABLE STRUCTURAL FILL MATERIAL. ALL STRUCTURAL FILL SHOULD BE COMPACTED ACCORDING TO THE GEOTECHNICAL ENGINEERING REPORT RECOMMENDATIONS GIVEN IN THE STRUCTURAL FILL SECTION. SPECIFICALLY, THE UPPER 2 FEET OF SOILS UNDERLYING PAVEMENT SECTION SHOULD BE COMPACTED TO AT LEAST 95 PERCENT MAXIMUM DRY DENSITY (BASED ON ASTM D-1557), AND ALL SOILS BELOW 2 FEET SHOULD BE COMPACTED TO AT LEAST 90 PERCENT. COMPACTION NOTES 1. CONTROL SOIL COMPACTION DURING CONSTRUCTION PROVIDING MINIMUM PERCENTAGE OF DENSITY SPECIFIED FOR EACH AREA CLASSIFICATION. PERCENTAGES ARE RELATED TO 6:48 MAXIMUM DRY DENSITY AS MEASURED IN CONFORMANCE WITH ASTM D 1557. 2. COMPACT TOP 12-INCHES OF SUBGRADE (24-INCHES UNDER PROPOSED DRIVING SURFACES) TO 95-PERCENT OF MAXIMUM DRY DENSITY UNDER PAVEMENTS AND GRAVEL SURFACING. 3. WHERE SUBGRADE OR LAYER OF SOIL MATERIAL MUST BE MOISTURE CONDITIONED BEFORE COMPACTION, UNIFORMLY APPLY WATER TO SURFACE OF SUBGRADE OR LAYER OF SOIL MATERIAL TO PREVENT FREE WATER APPEARING ON SURFACE DURING OR SUBSEQUENT TO COMPACTION OPERATIONS. REMOVE AND REPLACE, OR SCARIFY AND AIR DRY, SOIL MATERIAL THAT IS TOO WET TO PERMIT COMPACTION TO SPECIFIED DENSITY. SOIL MATERIAL THAT HAS BEEN REMOVED BECAUSE IT IS TOO WET TO PERMIT COMPACTION MAY BE STOCKPILED OR SPREAD AND ALLOWED TO DRY. ASSIST DRYING BY DISKING, HARROWING OR PULVERIZING UNTIL MOISTURE CONTENT IS REDUCED TO SATISFACTORY VALUE. SURVEYED: DESIGNED: DKM DRAWN: KLK CHECKED: DCD BY DATE AP P R APPROVED: DCD SCALE: AS NOTED ONE INCH AT FULL SCALE IF NOT ONE INCH SCALE ACCORDINGLY VERTICAL: NAVD 1988 HORIZONTAL: NAD 1983/1991 DATUM GRADING AND DRAINAGE NOTES 1. PROVIDE 12" MINIMUM VERTICAL AND 7' (10' FROM WATER) MINIMUM HORIZONTAL CLEARANCE (OUTSIDE SURFACES) BETWEEN STORM DRAIN PIPES AND OTHER UTILITY PIPES AND CONDUITS. FOR VERTICAL SEPARATION SMALLER THAN 12" AT ANY CROSSINGS, ETHOFOAM PAD SHALL BE PROVIDED. 2. CONTRACTOR AND/OR SURVEYOR SHALL CALCULATE PIPE SLOPES BASED ON THE INVERT ELEVATIONS SHOWN ON THE PLANS PRIOR TO CONSTRUCTION. THE CONTRACTOR SHALL NOTIFY THE ENGINEER OF ANY DISCREPANCIES PRIOR TO FIELD STAKING AND CONSTRUCTION. 3. CONTRACTOR TO FIELD VERIFY HORIZONTAL LOCATION OF CATCH BASIN STRUCTURES WITH RESPECT TO CURBING/CONCRETE PADS PRIOR TO CATCH BASIN PLACEMENT. PARTIAL STAKING OF CURBS/PADS AT TIME OF CATCH BASIN STAKING MAY BE NECESSARY. 4. ALL STORM DRAINAGE PIPING SHALL BE GASKETED AND WATERTIGHT. 5. PIPE COVER FOR LINED POLYETHYLENE PIPE (CPEP) SHALL BE 2' MINIMUM. 6. PIPE COVER FOR POLYVINYL CHLORIDE PIPE (PVC) SHALL BE 3' MINIMUM. CONSTRUCTION RECORD DRAWING PROJECT WAS COMPLETED IN SUBSTANTIAL CONFORMANCE WITH THE APPROVED PLANS. ELEVATION DEVIATIONS, WHERE APPLICABLE, ARE DENOTED WITH PLAN CALLOUT UPDATES, AND A STRIKEOUT THROUGH THE ORIGINAL ELEVATION. UTILITY AS -BUILT INFORMATION OBTAINED BY SITTS & HILL ENGINEERS, INC C TY OF RENTON Plan ning/Building/Public Works Dept C. 46449 4C IRECORD DRAWING SEPTEMBER 20, 2024 aI sitts&hill 'Upul CIVIL I STRUCTURAL I SURVEY 4815 CENTER STREET I TACOMA, WA. 98409 PHONE: (253) 474-9449 I FAX: (253) 474-0153 http://www.sittshill.com/ Project No.: 19682 i Project Mgr.: DCD Proj. Engineer: DCD i Proj. Drafter: KLK R-425414 IN COMPLIANCE WITH CITY OF RENTON STANDARDS WASHINGTON STATE AUTO DEALERS ASSOCIATION (WSADA) 621 SOUTHWEST GRADY WAY, RENTON, WA 98057 WSADA BUILDING ADDITION AND IMPROVEMENTS GRADING AND STORM DRAINAGE NOTES DATE: 022.1 q I.30 FIE 2 PAGE: C3.2 SHEET: OF: 14 26 N C) T O O C') N 1 u