HomeMy WebLinkAboutR-425414A PORTION OF THE NW 1/4 OF SECTION 19, TOWNSHIP 23 NORTH, RANGE 5 EAST, W.M., KING COUNTY, WASHINGTON
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DocuSlgn Envelope ID: 3B1B34D3-TEOA-478C-AD03-4329FFEOCI08
SURFACE WATER STANDARD PLAN NOTES:
THE FOLLOWING IS ALIBIING OF GENERAL NOTES THAT SHALL BE INCORPORATED IN THE DRAINAGE PLAN SET. ALL THE NOTES ON THE LIST MAY NOT PERTAIN TO EVERY
PROJECT, THE APPLICANT OR OWNER, HEREBY REFERRED TO AS APPLICANT, MAY STHAKL-OUT IRRELEVANT NOTES IF NOT APPLICABLE TO THE PROJECT, HOWEVER, THE
APPLICANT SHALL NOT RENUMBER NOR EOTT THE REMAIIII NOTES_ IF ADDITIONAL NOTES ARE NEEDED FOR SPECIFIC ASPECTS, THEY SHALL BE ADDED AFTER THE
SURFACE WATER STANDAFD PLAN NOTES.
1. BEPOREANY CONSTR(PC'nOm OR DEVELOPMENT ACTIVITY QCCLIRS.A PRE-CONISTRI.II MEETiNI;SHALI BE HELD AMONG, THE CITY OF RENTON, HEREBY
REFERRED TD AS THE CITY. THE APPLICANT. AND THE APPUCANT'S C#ETRACTOR.
2. THE APPLICANT SHALL BE RESPONSIBLE FOR SECURING ALL NECESSARY CITY, STATE. AND FEDERAL PERMITS WJ OR TO CONSTRUCTION.
3. A11L STORM DRAINAGE IMPROVEMENTS SHALL BE DESIGNED AND CONSTRUCTED IN ACCORDANCE VNIH THE LATEST EDITION OF THE CITY CF RENTON SURFACE
WATER DESIGN MANUAL (RENTON SWDMK RENTON MUNICIPAL CODE IRMCL AND THE STANDARD SPECIFICATIONS FOR ROAD- BRIDGE NNU MUNICIPAL
CONSTRUCTION PREPARED BY WSI AND TFE AMERICAN PUBLIC WORKS ASSOCIATION (APWAI. IT SHALL SE TINE SOLE RESPONSIBILITY OF THE APPUICANT TO
OORRECTANY ERROR, OMISSION OR VAINATION FROM THE ASCII REQUIREMENTS FOUND IN THE PLANS. ALL CORRECTIONS S44U BE AT NO ADDITIONAL COST TO
THE CITY,
4. APPROVAL OF THE ROAD, GRADING, PARKING, BUILDING, AND DRAINAGE PLAN DOES NOTCONNSTITLTTE AS APPROVAL OF ANY OTHER. CONSTRUCTION AEG. WATER,
SEWER- GAS, )LECTRICAL. ETC.) PLANS FOR STRUCTURES SUCH AS BRIDGES, VAULTS, AND RETAINING WALLS REQUIRE ASEPARATE REVIIEW 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 REQUIRE COORDINATION FOLLOWED BY WRITTEN APPROVAL FROM THE CITY.
5. A DORY OF THE. APPROVED PLANS SMALL BE ON THE JOB SITE WHENEVER CONSTRUCTION IS IN PRCGRESS.
B. THE LOCATIONS OF ALL EXISTING LLTIUTIESSHOWNI HEREON HAVE BEEN ESTABLISHED BY FIELD SLidVEY OR OBTAINED FROM AVAr_ABLE RECORDS AI SHALL
THEREFORE BE CONSIDERED APPRO)GUATE ONLY AND NOT NECESSARILY COMPLETE. IT IS THE SOLE RESPONSIBILITY OF THE APPLICANTANDTHE APPLICANTS
CONTRACTOR TO INDEPENDENTLY VERIFY THE ACCURACY OF ALL UTILITY LOCATIONS SHOWN, AND TO FURTHER DISCOVER AND AVOID ANY OTHER U71LITIES NOT
$HQWN HEREON THAT MAY BE AFFECTED BY THE IMPLF-MEHrArIQN QF THIS FAIN. THE APPLICANT SMALL RECORD ON THE A$ -BUILT DRAW1406 ALL
UNDOCUMENTED UTILITIES DISCOVERED AND ANY CHANGES TO TIE APPROVED PUNS. THE APPLICANT SHALL IMMEDIATELY NOTIFY THE ENGINEER OF RECORD IF
CONFLICT' EXISTS.
7. VERTICAL DATUM SHALL BE NAVD 88 AND HORIZONTA.. DATUM SHALL BE NAC E3 (WA. STATE PLANE, NORTH). UNLESS OTHERWISE APPROVED BY THECRY.
REFERENCE BENCHMARK. DATUM, AND£UEVATHONS SHALL BE NOTED ON THE PLANS.
S. ALL UTILITY COI SACKFILL AND ROADWAY SuWRADE SHALL BE COTO 9S%MA.XIMURI DRY DENSITY PER SECTION 2-63.N14ID-COWAC4ICH AND
MOISTURE CONTROL TESTS OF THE WSDOT STANDARDSPECIFHGATIONS. IN PERMEABLE PAVEMENT AND OTHER INFILTRATION AREA&ALL TRENCH BACKFILL SHALL
BE FIRSA AND UNYIELDING BUT IN NO CASE SHALL BE UUMPACTE}TO MORE THAN 92% OF MAXIMUM URY DENSITY.
9. OPEN CUTTING OF EXISTING ROADWAYS FOR STORM DRAINAGE WORM IS NOT ALLOWED UNLESS SPECFHCALLY APPROVED BY THE CITY AND NOTED ON THESE
APPROVED PLANS. ANY OPEN CUTSHALL BE RESTORED IN ACCORDANCE WITH THE CITY TRENCH RESTORATION STANDARDS.
10_ ALL PIPE AND STRUCTURES SHALL BE STAKED FOR SURVEY LINE AND GRADE PRIOR TO THE START OF CONSTRUCTION_ WHERE SHOWN ON THE PLANS OR WHERE
DIRECTED BY THE CITY. THE EXISTING MANHOLES. CATCH BASINS. OR INLETS SHALL BE ADJUSTED TO THE GRADE AS STAKED
11. ALL FLOW CONTROL FACILITIES SHALL BE INSTALLED AND IN OPERATION PRIORI TO, OR IN DONJUNCTICN WITH.. ANY CCNSTRUCTION ACTIVITY UNLESS OTHERWISE
APPROVED BY THE CITY.
12. ALL PIPE ANDAPPU RTENANCES SHALL BE LAID ON A PROPERLY PREPARED FQLNVDATION IN ACG4ROANGE PATH THE CURRENT $TATE OF WA$HIHQ,TQN STANDARD
SPECIFICATION FOR ROAD AND RRIDGE CONSTRUCTION_ THIS SHALL INCLUDE NECESSARY LEVI THE TRENCH BOTTOM OR THE TOP OF THE FOUNDATION
MATERIAL, AS WELL AS PLACEMENT AND COMPACTION OF REQUIRED DEDDNG MATERIAL TO UNIFORM GRADE 50 THAT THE ENTIRE LENGTH OF THE FNPE WILL BE
SUPPORTED ON A UNIFORMLY DENSE. UNYIELDING BASE, ALL PIPE SEDDING ANDBACKPLL SHALL BE AS SHOVIN ON THE CITY STANDARD PLAN =1001 224 * AND
22CL2O_
13. STEEL PIPE SHALL BE ALUMINIZED, OR GALVANIZED WITH ASPHALT TREATMENT 1, 2, CR S INSIDE AND OUTSIDE.
14. ALL DRAINAGE STRUCTURES SUCH AS CATCH BASINS AND MANHOLES SHALL BE FITTED NTH DUCTILE IRON. BOLTLOCNING LEGS PER Elf CITY STANDARD PLAN
204AD, 23420, 204.30, 204.40, AND 2D4,50. STRUCTURES SHALL HAVE.
• RECTANOULAR OR ROUND. SOLID LIDS WHEN NOTOOLLECTING RUNOFF. AND OuTSIDE OF THE ROADWAY
• ROUND, SGUD LIDS WHEN NUTCULLECTING RUNOFF, AND LOCATED WITHIN THE ROADWAY,BUT UUTSIOE OF THE CURBJGUTTER LINE.
. ROUHD. SOLID LIDS DISPLAYING THE CITY LOGO WHEN WITHIN THE PUBLIC RICIHT-0E-WAY OR IN AN EASEMENT 70 THE CITY. PRIVATE STRUCTURE LIDS OUTSIDE
PUBLIO RIGHT-OF-WAY AND EASEMENTS TO THE CITY SHALL NOT DISPLAY THE CITY LOGO.
15. BUILDINI AND OTHER STRUCTURES SHALL BE PLACED IN ACCORDANCE WITH TABLE 4.1 EASEMENT WIDTHS ANDBUILDNG SETBACKS LIA6SQF THE RE14TON SWUM.
16 LIDS OF MANHOL>EWCATGH BASINS WITHIN PUBLIC RIGHT-OF-WAY SHALL NOT BE ADJUSTED TO FINAL GRADE UNTIL AFTER PAVING, ALL MIINI4OLUCATCH BASIN RIMS
SHALL BE ADJUSTED TO BE FLUSH WITH FINAL FINISHED GRADES, UNLESS OTHERWISE SHOWN.
T ALL DRIVEWAY CULVERTS LOCATED WITHIN CITY RIGHT-OF-WAY SHALL BE OF SUFFICIENT LENGTH TO PROVIDE A MINIMUM 3.1 SLOPE FROM THE EOGE OF THE
DRIVEWAY TO THE BOTTOM DT THE DITCH.
uNLESi 67HERW15E NdTIu, DRONING 15 NOT T6 5tdLE INT51
STD. P LAN - 267.00
PUBLIC WORKS SURFACE WAITER STANDARD PLAN
DEPARTMENT NOTES (I OF 2) Fmaw#pohy
artin Pastucha9/13/2020
DATE
I &4E
DocuSign Envelope ID: 3B1BMD3-TEDA-478C-RD03-4329FFEOCI08
SURFACE WATER STANDARD PLAN NOTES:
THE FOLLOWING IS A LISTING GF GENERAL NOTES THAT SHALL BE INCORPORATED IN THE DRAINACE PLAN SET. ALL THE NOTES ON THE LIST MAY NOT PERTAIN TO EVERY
PROJECT, THE APPLICANT OR OWNER, HEREBY REFERRED TOAS APPLICANT, MAY STARE OUT IRRELEVANT NOTES IF NOT APPLICABLE TO THE PROJECT, HOWEVER, THE
APPLICANT SHALL NOT RENUMBER NOR EDIT THE REMAIYNG NOTES_ IF ADDITIONAL N07ES ARE NEEDED FOR SPECIFIC ASPECTS, THEY SHALL BE ADDED AFTER THE
SURTACE WATER STANDARD PLAN NOTES.
19_ ROCK FDA EROSION PROTECTIONOF ROADSIDE CITCHES. WHERE REQUIREC, SHALL BE OF SOUND QUARRY ROCK PLACED TOA MINIMUM DEPTH OF O4E (1) FOOT
AND SHALL MEETTHE FOLLOWINGSPECIFICATIONS:
• 4.5 INCH ROCK I A0 - 70% PASSING:
• 2.4 INCTI ROCK J 30 A01M PASSING: AND
• LE55 THAN 2 INCH ROCK 3 11) - 2U% PASSING,
19. FOOTING DRAINAGE SYSTEMS AND ROOF DOWNSPOUT SYSTEMS SHALL NOT BE INTERCONNECTED AND SHALL SEPARATELY CONVEY COLLECTED FLOWS TO THE
CONVEYANCE SYSIIEMGR FLowcoNTROL FACILITY ON THE SITE. UNLESS APPROVED BY THE CITY, FOOTING DRAINS SHALL NOT DE CONNECTED TO ON -SITE BLIPS,
2C. THE ENO OF EACH STORM DRAIN STUB SHALL BE CAPPED. A aEANOUT TOPPED WITH BOLT -LOOKING LID MRRKED'370RM- OR'DRAIN' SHALL BE LOCATED AT THE
PROPERTY LINE OR AT THE PAINT OF CONNECTION OF A PRIVATE STORM DRAINAGE CONVEYANCE SYSTEM PER THE CITY STANDARD PLAN V7.00.
:31. ALL STORM SYSTEM EXTENSIONS SHALL BE STAKED FOR LINE AND GRADE RY ASUR4'EYCR LICENSED IN WASHINGTON STATE,. AND OUT SHEETS SHALL BE PROVIDED
TO THE CITY PRIOR TO CONSTRUC71ON_
22. ALL NEIALY.INSTALLED AND NEWLY.REHABILITATEO (PUBLIC AND P'RIVATEt STORM CONVEYANCE SYSTEMS SHALL BE INSPECTED BY MEANS OF REMOTE CCTV
ACCORDING TO THE CITY STANDARD PLAN 2911.00.. CCTV INSPECTIONS AND REPORTS SHALL BE SUBMITTED TO THE CITY PRIORTO RECEIVING APPROVILL. TO INSTALL
PROJECT CURBS. CUTTERS AND OR PAVEMEN4T
23. ALL STORM SYSTEMS AND CONNECTIONS TO EXISTING MAINS SHALL BE TE5TE0IN ACCORDANCE WITH SECTION 7-04.311) OF THE WSOGT 97ANUARD SPECIFICATIONS
AND IN THE PIArSENCF OF A REPRESENTATIVE OF THE CITY STOAM DRAIN ST(IPS. SHALL BE TESTED FOR AOC,EPTANCE AT THE SAME TWF THE MAW. STORM 19
TESTED.
24. FOR ALL DISTURBED PERVIOUS AREAS jCOMPACTED.. GRADED, LANDSCAPED. ETC.) OF THE DEVELOPMENT SITE, TO MAINTAIN THE MOISTURE. CAPACITY OF THE SOL
EITHER STOCKPILE AND RED15TRPOUTE THE EXISTING DUFF LAYER AND NATIVE TOPSOL OR AMEND THE SOIL WITH COMPOST IN ACCORDANCE WITH STANDARD PLAN
2S4 00.
25. ISSUANCE OF THE SUILDNGOR CONSTRUCTION PERMITS BY THE CITY DOES NOT RELIEVE THE APPLICANT OF THE CONTINUING LEGAL OBLIGATION AND OR LIABILITY
CONNECTED WITH STORMWATER DISPOSAL THE CITY DDFS NOT ACCEPT ANY OBLIGATION FOR THE PROPER FUNCTIONING AND MAINTENANCE OF THE STORM
SYSTEM PROVIDED DURING CONSTRUCTION.
26. ADEQUATE SAFEGUARDS, SAFETY DEVICES, PR07EC71VE EQUIPMENT. FLA•GGERS, AHD ANY OTHER ACTIONS NEEDED TO PROTECT THE LIFE, HEALTH, AND SAFETY OF
THE PUBLIC. AND TO PROTECT PROPERRTY IN CONNECTION WITH THE PERFORMANCE OF WORK SHALL BE PROVIDED. ANY WORK WITHIN THE TRAVELED
RIGHT# -WAY' THAT MAY INTERRUPT NORMAL TRAFFIC I -LOW SHALL REQUINEATRA.FFICCONITROL, PLAN APPROVED BY THE CITY. ALL SECTIONSOF THE WSUOT
STANDARD SPECIFICATIONS 1.10 TEMPORARY TRAFFIC CONTROL SMALL APPLY.
27- PROJECTS LOCATED WITHIN THE CITY'S AOUIFER PROTECTION AREA, (APO) SHALL COMPLY WITH SPECIAL REQUIREMENT N OF THE RENTON SWUM AND AQUIFER
PROTECTION REDULATIONS IRMC4.3�0.501.
20. PLACEMENT OF SPACE APPURTENANCES (CATCH E3ASMMANHOLE LIDS, CLEANOUTS. INLETS, ETC.) IN THE STREET TRAVEL LANE WHEEL PATH, INTERSECTIONS OF
STREET TRAVEL LANES, BIKE LANES. SIDEWALKS. AND CR05.9WALKS SHALL BE AVOIDED WHENEVER POSSIBLE. ANY SURFACE APPURTENANCE PLACED IN A
SICEWALK NOR CROS.S.WALIS"A BE FITTED WITH A NONSLIP OR NON.SKI❑ LID PER ADA RFQUIRrI IENTS
29. CLEARLY LABEL PUBLIC AND PRIVATE SYSTEMS ON THE PLANS. PRIVATE SYSTEMS SHALL BE MAINTAINED BY THE APPLICANT
.i17 MINIMUM COVER OVER STORM DRAINAGE PIPE SHALL CONFORM TO TABLE 4.2.1 A2 OF THE RENTON SWDM
31 CONSTRUCTED PERMEABLE PAVEMENT SHALL BE PERMEABLE ENOUGH TOAB.96RB WATER AT A MINIMUM RATE OF 20 INCHES PER HOUR IMMEDIATELY AFTER THE
PAVEMENT SURFACE HAS BEENWEH TED CONTINUOUSLY FOR AT LEAST 10 MINUTES. COMPLIANCE WITH THIS MINIMUM RATE SMALL BE CHECKED PRIOR. TO
CONSTRUCTION APPROVAL OF THE PAVEMENT. COMPLANCE MAY BE CHECKED USING A STAPLE BUCKET TEST IN WHICH 5 GALLONS OF WATER 15 POURED ONTO THE
PAVEMENT SURFACE ALL AT ONCE. IF ONLY A MINOR AMOUNT OF WATER PONDS OR RUNS OFF THE SURFACE. THEN THE PAVEMENT IS CONM*RED TO MEET THE
MINIMUM RATE OF ABSORPTION, AT LEAST ONE TEST SHALL BE CONDUCTED PER 1,004 SCUARE FEET OF PERMEABLE PAVEMENT, IF THIS TEST IS NOT CONCLUSPIE,
THEN ANOTHER TEST PER ASTM CI M1 SHALL BE CONDUCTED. FOR LARGE AREAS IE.G.. PARKING AREAS). TESTING OBSERVATION MAY BE ACCOMPLISHED WHILE
WALKING BEHIND ASLCWLY MOVINO WATER TRUCK DISCHARGING WATER AT A RATE. SIMILAR TO THE BUCKET TEST. PERMEABLE PAVERS SHALL BE TESTED LASING
ASTM C1791_
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STD. PLAN - 267,10
t NOTES �(2 OF 2') arlin Pastuch
PUBLIC WORKS SURFACE WATER STANDARD PLANEvwmipI
_11 DEPARTMENT /13/2020
,w•,:,W+iFcww+,wo DATE
• Call 811
• ® two business days
before you dig No.
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
SUBGRADE BELOW PAVEMENT:
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
8:46 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: SCALE:
DESIGNED: AS NOTED
DKMI
DRAWN:
KLK ONE INCH
CHECKED: AT FULL SCALE
DCD IF NOT ONE INCH
REVISION BY DATE AP P R APPROVED: DCD SCALE ACCORDINGLY
VERTICAL: NAVD 1988
HORIZONTAL: NAD 1983/1991
DATU M
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.
CITY OF
,R RENTON
Planning/Building/Public Works Dept
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(REISSUED FOR PERMIT
OCTOBER 30, 2023
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sitts&hill
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 1 Project Mgr.: DCD
Proj. Engineer: DCD I Proj. Drafter: KLK
R-425414
IN COMPLIANCE WITH CITY OF RENTON STANDARDS
DEVELOPMENT ENGINEERING %
SAMorman 12/05/2023
SURFACE WATER UTILITY
J Farah 12/11 /2023
WASHINGTON STATE AUTO
DEALERS ASSOCIATION (WSADA)
621 SOUTHWEST GRADY WAY, RENTON, WA 98057
WSADA BUILDING ADDITION AND IMPROVEMENTS
GRADING AND STORM DRAINAGE NOTES
DATE:
2022.11.30
FIE
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