HomeMy WebLinkAboutR-385107STORM ORA /NAGE NOTES
t ALL DRAINAGE STRUCTURES, SUCH AS CA TCH BASINS AND MANHOLES, NOT LOCA TED WTHIN A TRA V£LEO ROADWA Y OR SIDEWALK,
SHALL HA VE SOLID LOCK/NG LIDS. ALL DRAINA GE STRUCTURES ASSOCIA TED WITH A PERMANENT RETEN 110N/OETEN 77ON FACIL /TY
SHALL HA VE LOCKING LIDS.
2. BEFORE ANY CONSIRUCRON OR DEVELOPMENT AC7714TY OCCURS,APRE-CGy1lSIRUC770N MEE77NG MUST BE HELD WITH THE CITY OF
RENTON PLAN REVIFAER.
3. ALL CONSTRUC77ON SHALL BE IN ACCORDANCE WITH THE 1996 STANDARD SPECIFICA77ON FOR ROAD, BRIDGE AND MUNICIPAL
COINSTRUCRON" PREPARED BY W5DOT, AND THE AMERICAN PUBLIC WORKS ASSOCIA 77ON (APWA), AS AMENDED BY THE CITY OF
RENTON PUBLIC WORKS DEPARTMENT.
4. THE SURFACE WA TFR DRAINAGE SYSTEM SHALL 8E CONSTRUCTED ACCORDING TO THE APPROVED PLANS, WHICH ARE ON FILE IN THE
PUBLIC WORKS DEPARTMENT. ANY DE VIA 77ON FROM THE APPROVED PLANS WILL REQUIRE #R1TTEN APPROVAL FROM THE
CITY OF RENTON PUBLIC WORKS DEPARTMENT, SURFACE WA TER UTILITY SEC 770N.
5. A COPY OF THESE APPROVED PLANS MUST BE ON THE JOB SITE WHENEVER CONS 7RUC 77ON l5 IN PROGRESS.
6. DA IUM FOR VER77CAL CONTROL SHALL BE NORTH AMERICAN VERTICAL DA TUM 1988 METERS, AND FOR HORIZONTAL CONTROL SHALL BE
NORTH AMERICAN DA 7UM 1983/1991 MF7FR5 UNLESS OTHERW15E APPROVED BY THE CITY OF RENTON PUBLIC WORKS DEPARTMENT.
REFERENCE BENCHMARK AND ELEVA 770N5 ARE NOTE ON THE PLANS.
7. ALL SED/MENTA TION/EROSION FACIL l77ES MUST BE IN OPERA 7701V PRIOR TO CLEAR/NG AND BUILDING CONS IRUCITON, AND THEY
MUST BE SA 775FACTORIL Y MAINTAINED UNTIL CONSIRUC170N IS COMPLETED AND THE POTENTIAL FOR ON-SITE EROSION HAS PASSED.
8 ALL RETEN770N/DETEN TION FACIL l77ES MUST BE INSTALLED AND IN OPERA TON PR/OR TO OR /N CONJUNC77ON WITH ALL
CONSTRUCTION AC7714TY UNLESS OTHERWISE APPROVED BY THE PUBLIC WORKS DEPARTMENT, SURFACE WA TER U77LITY SEC77ON.
9. GRASS SEED MA Y BE APPLIED 8Y HYDROSEEDING. THE GRASS SEED M/X7URE, OTHER THAN CITY OF RENTON APPROVED STANDARD
MIXES, SHALL BE SUBMITTED BY A LANDSCAPE ARCHITECT AND APPROVED BY THE PUBLIC WORKS DEPARTMENT, SURFACE WA TFR
U77LITY SEC77ON
10. ALL PIPE AND APPURTENANCES SHALL BE LAID ON A PROPERL Y PREPARED FOUNDA 77ON /N ACCORDANCE WITH SEC7701V 7-02.3(1) OF
THE CURRENT 5 T 7F OF WASHINGTON STANDARD SPEC/F/CA 77ON FOR ROAD AND 8RIOGE CONS IRUC770N. THIS SHALL INCLUDE NECESSARY
LEVELING OF THE TRENCH BOTTOM OR THE TOP OF THE FOUNDA 77ON MA TER/AL, AS WELL AS PLACEMENT AND COMPAC7701N OF REQUIRED
BEDDING MA SERIAL, TO UNIFORM GRADE SO THA T THE EN77RE LENGTH OF THE PIPE WILL BE SUPPORTED ON A UNIFORML Y DENSE,
UNYIELDING BASE. ALL PIPE 8E00/NG SHALL BE APWA CLASS "C'; WITH THf- EXCEP77ON OF PVC PIPE. ALL TRENCH BACKFILL SHALL BE
COMPAC7F0 TO MINIMUM 95X FOR PA VEMENT AND STRUCTURAL FILL AND 90Z 07HERWSE PER ASTM D-1557-70. PEA GRA VEL BEDDING
SHALL BE 6 INCHES OVER AND UNDER PVC PIPE.
11. 57RUC7URES SHALL NOT BE PERMITTED WITHIN 10 FEET OF THE SPRING LINE OF ANY STORM DRAINAGE PIPE, OR 15 FEET FROM
THE TOP OF ANY CHANNEL BANK.
12. ALL CA TCH BASIN GRA TES SHALL BE DEPRESSED 0.10 FEET BELOW PA VEMENT LEVEL.
13. OPEN CUT ROAD CROSSINGS THROUGH EXIS77NG PUBLIC RIGHT -OF -WA Y WILL NOT BE ALLOWED UNLESS SPEC/FICALL Y APPROVED 8Y
THE CITY OF RENTON PLANNING/BUILD/NG/PUBLIC WORKS ADMINIS1RA TOR.
14. ALL BUILDING DOW'IISPOUTS AND F0077NG DRAINS SHALL BE CONNECTED TO THE STORM DRAINAGE SYSTEM, UNLESS APPROVED
8Y THE CITY PLAN REVIEWER OR SURFACE WA TER U77L/TY SECTION. AN ACCURA TEL Y DIMENSIONED CERTIF/ED
AS -BUIL T DRAWING OF THIS DRAINAGE SYSTEM WILL 8E SUBMITTED TO THE CITY UPON COMPLE77ON.
15. 155UANCE OF THE BUILDING OR CONSTRUC77ON PERMIT BY THE CITY OF RENTON DOES NOT REL/EVE THE OWNER OF 111E
CONTINUING LEGAL OHLIGA 770N AND/OR LIABILITY CONNECIFD WITH STORM SURFACE WA TFR D/SPOSl770N. FURTHER, THE
CITY OF RENTON DOES NOT ACCEPT ANY 08LIGA 77ON FOR THE PROPER FUNCTION/NG AND MAINTENANCE OF THE
SYSTEM PROVIDED DURING CONSIRUC77ON.
16. THE CONTRACTOR SHALL 8E RESPONSIBLE FOR PROVIDING ADEQUA 7F SAFEGUARD, SAFETY DEVICES, PRO 7FC77VE EQUIPMENT,
FLAGGERS, AND ANY OTHER NEEDED AC77ONS TO PROTECT THE LIFE, HEAL TH, AND SAFETY OF THE PUBLIC, AND TO PROTECT
PROPERTY IN CONNEC77ON WITH THE PERFORMANCE OF WORK COVERED IN THE CON 7RACT. ANY WORK WITHIN THE TRA VEL ED
RIGHT -OF -WA Y THA T MA Y INTERRUPT NORMAL TRAFFIC FLOW SHALL REQUIRE AN APPROVED TRAFFIC CONTROL PLAN 8Y THE
TRAFFIC ENGINEERING Dl VIS/ON OF THE DEPARTMENT OF PUBLIC WORKS. ALL SEC77ONS OF THE #500T STANDARD
SPECIFICA 77ONS 1-07-23, TRAFFIC CONTROL, SHALL APDL Y.
17. SPECIAL DRAINAGE MEASURES WILL BE REQUIRED IF THE PROJECT LOCA 77ON IS WITHIN THE AQUIFER PRO TEC 77ON AREA (APA).
18 /T SHALL BE THE SOLE RESPONSIBIL/TY OF THE CONTRACTOR TO OBTAIN STREET USE AND ANY OTHER RELA TED PERMITS PRIOR TO
ANY CONSTRUC77ON ACTIVITY.
19. ALL LOCA 77ONS OF EX/SUNG U77LI77ES SHOWN HEREON HA VE BEEN ESTABLISHED BY FIELD SURLY OR OBTAINED FROM A VAILABLE
RECORDS AND SHOULD THEREFORE BE CONSIDERED APPROX/MA TE ON Y AND NOT NECESSARIL Y COMPLETE. IT l5 THE SOLE
RESPONSIBILITY OF THE CONTRACTOR TO INDEPENDENTL Y VERIFY THE ACCURACY OF ALL U77LITY LOCA (IONS SHOWN AND TO
FURTHER DISCOVER AND A VOID ANY OTHER U77Ll7EES NOT SHOW HEREON WHICH MA Y BE AFFECTED 8Y THE IMPLEMENTA 77ON OF
THIS PLAN. THE CONTRACTOR SHALL CONTACT THE UNDERGROUND U77LI77ES LOCA 77ON SERVICE (1-800-424-5555) AT LEAST 48
HOURS PR/OR TO CONS IRUC17ON. THE OWNER OR HIS REPRESENTA 7712 AND THE ENGINEER SHALL BE CONTACTED IMMEOIA TEL Y IF A
CONFLICT EXISTS.
20. ALL STORM DRAINAGE 51RUC7URES, AS DESIGNA TED IN THE PLANS, SHALL BE ONE OF THE FOL LOWING•
A. YARD DRAIN - Cl TY OF RENTON 51D. PLAN N0. 8011, A5SOCIA TED SAND AND GRA VEL CB -10, OR EQUAL.
8 INLET - CITY OF RENTON 57D. PLAN NO. 8010, A55OCIA TED SAND AND GRAVEL CB -17, OR EQUAL.
C. TYPE 1 CATCH BASIN - CITY OF RENTON 57D, PLAN NO. 8012, ASSOCIATED SAND AND GRAVEL CB -15, OR EQUAL.
D, TYPE 11 CA TCH BASIN - CITY OF RENTON 57D. PLAN 8027, (WITH MINIMUM 24" DEEP SUMP BELOW PIPE INVERT),
ASSOCIA TED SAND AND GRAVEL PRECAST CATCH BASIN, OR EQUAL.
E. BAFFLE- TYPE 0/L/WA TER SEPARA TOR VAUL T - CITY OF RENTON SID. DRWG NO 3.4.5 (DEPENDING ON DEPTH AND
DETAILS IN THESE PLANS) OR EQUAL.
F. SPECIAL CATCH BASINS OR DRAINAGE SIRUC7URES SHALL BE AS DETAILED /N THESE PLANS.
NOTE ALL UNIT COVERS SHALL BE PER APWA STANDARDS AND ALL STRUC7URES DEEPER THAN FIVE FEET (RIM TO INVERT)
SHALL BE TYPE 11 AND EQUIPPED WITH MANHOLE STEPS OR A MANHOLE LADDER, PER APWA STANDARDS.
21. ALL FRAMES, GRA TF5 AND/OR SOLID COVERS SHALL BE CAST IRON OR DUCTILE IRON AND SHALL MEET CITY OF RENTON STANDARDS.
A. STANDARD FRAME AND GRA TF - CITY OF RENTON 57D. PLAN NO 8020A, OL YMPIC FOUNDRY CO. NO SM60, OR EQUAL.
B. SELF -L OCK/NG VANED GRA 7F - CITY OF RENTON STD. PLAN 8019 OR EQUAL.
C. THRU-CURB INLET FRAME AND GRA TF - CITY OF RENT6W SID. PLAIN. NO 8017 OL YMPIC FOUNDRY CO. NO. SM52 OR EQUAL.
D. SOLID, LOCK/NG, RECTANGULAR COVER - CITY OF RENTON 57D PLAN N0. 8020, OLYMPIC FOUNDRY CO. N0. W505 OR EQUAL.
f SOLID, LOCK/NG ROUND COVER - CITY OF RENTON STDD, DPW NO 3.6.7, OLYMPIC FOUNDRY CO. NO MH30D/T OR EQUAL.
NOT ALL SOLID COVERS SHALL BE MARKED "DRAIN. " ALL GRA TS SHALL BE MARKED "OUTFALL TO STREAM - DUMP NO
POLLUTANTS: " ALL GRA TES SHALL BE DEPRESSED 0.10 FEET FROM SURROUNDING CURB OR PA VEMENT TO INSURE ADEQUA TE DRAINAGE
22. ALL STORM DRAIN PIPE MA Y BE CONSTRUCTED OF ONE OF THE FOLL OWING MA TERIALS UNLESS 0THERNSF SPECIFIED IN THE PLANS.
ALL PIPE JOINTS MUST BE GASKE7FD WA 7FR77GHT AND MUST BE OF THE SAME MA TERIAL AS THE PIPE. ALL PIPE SHALL HA VE A
MINIMUM COVER OF 12" AND SHALL BE ADEQOA TEL Y PROTECTED DURING CONSTRUC77ON (REFER TO THE MANUFACTURER 5
RECOMMENDA 7701VS FOR MINIMUM COVER FOR HEA VY EQUIPMENT LOADINGS
A. DUC77LE IRON 4" THROUGH 14" 0/AMEIFR PIPE SHALL BE CLASS 52 AND 16" THROUGH 24" DIAMETER PIPE SHALL BE CLASS
50, ALL IN ACCORDANCE WITH USA STANDARD A-21.1 (A#WA C-51). ALL JOINTS SHALL BE PUSH -ON, MECHANICAL, OR
FLANGED.
8. CONCRETF 4" THROUGH 18" DIAMETER PIPE SHALL BE NON -REINFORCED, BELL AND SPIGOT WITH RUBBER GASKET JOINTS,
CONFORMING TO ASTM C-14 (CLASS ll) 21 " THROUGH 36" DIAME7FR PIPE SHALL BE REINFORCED, BELL AND SPIGOT WITH
RUBBER GASKET JOINTS, CONFORMING TO ASTM C-76.
C. PVC 4" THROUGH 18" DIAMETER PIPE WITH 18" TO 36" OF COVER SHALL BE IN ACCORDANCE WITH ASTM D 034 SDR 21. 4"
THROUGH 18" DIAMETER PIPE, WITH OVER 36" OF COVER SHALL 8E IN ACCORDANCE WITH AS7M 03034 SDR 35. ALL JOINTS
SHALL BE PUSH -ON WITH RUBBER GASKETS: (NOTE PVC P/PE USED FOR DOWNSPOUT LEADERS, YARD DRAINS, AND
LANDSCAPING DRAINAGE MA Y BE AS7# 02729 WITH SOL VENT WELDED JOINTS, 12" MIN/MUM COVER.)
D. CORRUGATED HIGH DENSITY POL YETHYLfNE PIPE (CPEP) 8" THROUGH 36" DIAMFTFR SHALL BE IN ACCORDANCE WITH AASHTO
M-294, AS SUPPLIED 8Y ADVANCED DRAINAGE SYSTEMS DESIGIVA TED N-12, OR EQUAL.
23 ALL BUILDING ROOF DRAIN DOWNSPOUTS AND F0077NG DRAINS SHALL BE DIREC7Z Y CONNECTED TO THE MAIN STORM DRAINAGE
CONVEYANCE SYSTEM ROOF DRAINS AND F0077NG DRAINS SHALL BE SEPARA 7F SYSTEMS AND SHALL BE
CONSIRUCIFD OF 4" (OR 6" DIA. W71ERE SHOW) RIGID PVC PIPE (NON-PERFORA TED FOR ROOF DRAINS, PERFORA TED
FOR F0077NG DRAINS) SUFFICIENT CLEANOUTS AND BENDS SHALL BE INSTALLED SO THAT THE SYSTEM CAN BE EASIL Y
MAINTAINED. THE SYSTEM SHOWN HEREON lS SCHEMA 77C ON Y. THE DRAINAGE/GRADING CONTRACTOR OR LANDSCAPER MA Y AL TER
THE LAYOUT AS REQUIRED TO BETTER DRAIN THE SITE WITH PRIOR APPROVAL OF THE ENGINEER. ALL ROOF AND F0077NG DRAINS
SHALL SE ADJUSTED AS NECESSARY TO A VOID IMPAC77NG THE EXIS77NG TREES DENOTED "TO BE SA VED" ON THE GRADING PLAN.
DRAIN L/NES SHOILD BE LOCA TED O/7SIDE THE DRIPLINE OF TREES WHEREVER POSSIBLE. THE CONTRACTOR SHALL KEEP A
DIMENSIONED RECORD OF THE LOCA 77ON OF ALL PIPES AND CLEANOUTS AND SUBMIT SAME TO THE ENGINEER AND OWER UPON
COMPLETION OF THE WORK.
24. ANY OPEN CUTS OF EXISTING PU811C ROADWAYS SHALL BE BACKFILLED AND COMPACTED IN ACCORDANCE WITH CITY OF RENTON
STANDARDS. ALL CU7S INTO EXISTING ASPHALT SHALL BE ALONG NEAT, CON77N000S, SAWfD LINES. A TEMPORARY COLD MIX
PA TCH MUST BE PLACED /MMEDIA 7FL Y AFTER 8ACKFlLL AND COMPAC770N 111E EXIS778G SURFACING MUST BE REPLACED IN KIND
OR 4 INCHES OF COMPACTED CLASS "8" ASPHAL T CONCRETE WHICHEVER IS GREA 7FR) WITHIN 14 OA YS OF COLD PA TCHING. THE
CONTRACTOR SHALL CL OSEL Y FOLL OW REQUIREMENTS OF THE RIGHT -OF- WA Y PERMI T SPECIFICALL Y, ALL 0W48LE WORK/NG HOURS,
DETOUR AND WARN/NG SIGNS AND NO77RCA 77ON OF ROAD AL TFRA 77ONS TO THE POLICE AND/OR OTHER EMERGENCY SERVICES.
NO. REVISION BY I DATE I AP P R
SUff*'Y a
KWS,
SCALE:
DSD` P L
DRAWN:
PJL
CHECKED: DEC
COVED: DEC
1 "=20'
ONE INCHATFULLSCALE
IF NOT ONE INCH
SCALE ACCORDINGLY
GRAD/NG NOTES
1. ALL WORK AND MA 7FRIAL5 SHALL BE IN ACCORDANCE WITH THE LA TE5T EDI 77ON OF THE "STANDARD SPEC/FICA TIONS FOR ROAD, BRIDGE, AND MUNICIPAL
C6W51RUC776W " PREPARED 8Y W.S. D, 0. T. AND A. P. W.A. AS ADOPTED 8Y THE CITY OF RENTON DEPARTMENT OF PUBLIC WORKS.
2. PRIOR TO ANY CONSTRUCTION AC7714TY, THE CONTRACTOR SHALL SCHEDULE AND A TTEND A PRE-CON57RUC170N CONFERENCE WITH THE CITY OF RENTON
C6N5IRUCT70N INSPEC77ON PERSONNEL BY PHONING 425-277-5570.
3. A COPY OF THESE APPROVED PLANS MUST BE ON THE JOB SITE WHENEVER CONSTRUC77ON l5 IN PROGRESS.
4. ALL SI TE WORK IMPROVEMENTS SHALL BE CONS IRUC7ED IN ACCORDANCE WITH THESE APPROWO PLANS. ANY DFVIA 77ON FROM THESE PLANS WILL REQUIRE PRIOR
APPROVAL FROM THE OWNER, ENGINEER AND APPROPRIA 1F PUBLIC AGENCIES.
5. lT SHALL BE THE SOLE RESPONSIBILI TY OF THE CONTRACTOR TO OBTAIN STREET USE AND ANY OTHER RELA TED PERMITS PRIOR TO ANY CONS 7RUC77ON AC77WTY.
6. ALL LOCA 77ONS OF EXIS77NG U77LI77ES SHOWN HEREON HA VE BEEN ESTABLISHED BY FIELD SURVEY OR OBTAINED FROM AVAILABLE RECORDS AND SHOULD THEREFORE
BE CWSIDERED APPROXIMA TE ONLY AND NOT NECESSARIL Y COMPLETE IT IS THE SOLE RESPONSIBILITY OF THE CONTRACTOR TO INDEPENDEN7Z Y VERIFY THE
ACCURACY OF ALL U77LITY LOCA 77ONS SHOW AND TO FURTHER DISCOVER AND A VOID ANY OTHER U77L177E5 NOT SHOWN HEREON W ICH MA Y BE AFFECTED BY THE
IMPLEMENTA 77ON OF THIS PLAN. THE CONTRACTOR SHALL CONTACT THE UNDERGROUND U77LI77ES LOCA LION SERVICE (1-800-424-5555) A T LEAST 48 HOURS PRIOR
TO CONS IRUC77ON. THE OWNER OR HIS REPRESENTA 77 VE AND THE ENGINEER SHALL BE CONTACTED /MMED/A TEL Y /F CONFLICTS EXIST.
7. LOCA TONS OF ROADWA Y5, BUILDINGS AND PARK/NG AREAS SHOW HEREON ARE APPROXIMA 7F FOR DIMENSIONED LOCA TONS OF THESE IMPROVEMENTS, REFER TO
THE ARCH/TEC 7URAL SITE PLAN. IMPROVEMENT AND 5TRUC7WE LOCA 17ONS SHALL BE FIELD SET 8Y THE ENGINEER AS REQUIRED.
8. THE FACIL /1lES SHOWN ON THE APPROVED EROS/ON/SED/MENTA /TON CONTROL PLANS SHALL BE CONS IRUCTFD/ IMPLEMENTED PRIOR TO ANY EXTEN5/VE GRADING OR
LAND CLEAR/NG IN ACCORDANCE WTH THA T PLAN. THESE FACIL /IES MUST BE SA 75FACTOR/L Y MAINTAINED UN 17L CONS IRUC7ON AND LANDSCAPING IS COMPLETED
AND THE POTEN7AL FOR ONSITE EROSION HAS PASSED.
9. GRADING INTO AREAS OUTSIDE OF THIS PROPERTY l5 SUBJECT TO THE #RIITEN CONSENT OF ADJOINING PROPERTY OW91/ERS. FAILURE TO OBTAIN SUCH CONSENT
MA Y REQUIRE ADD/TONAL ROCKERY OR OTHER SU/TABLE SOIL STAB/L/ZA ION SUCH THA T ALL GRA DING OCCURS WITHIN THE PROJECT'S BOUNDARIES. THE
CONTRACTOR SHALL VERIFY THE STA 7US OF THE ADJOINING PROPERTY OWNERS CONSENT BY CONTACTING THE DEVELOPER PRIOR TO PERFORMING WORK OUTSIDE OF
PROJECT BOUNDARIES.
10. GRADES SHOW ON THIS PLAN REPRESENT THE ENG/NEERS ES7MA TF OF APPROX/MA TF MIN/MUM EARTHWORK AND OTHER GRADING/SO/L CONS/DEKA TIONS. THE
CONTRACTOR MA Y AL TER THE GRADES SHOWN TO BETTER ACHIEVE THESE RESUL TS PROVIDED THA T ANY AL TFRA ION IS SUBJECT TO THE PRIOR APPROVAL IN WR/TNG
BY THE ENGINEER, OWNER, ANO THE APPROPRIA TE CITY OF RENTON DEPARTMENTS
11. THE RECOMMENDA 17ONS PROVIDED IN THE SOIL REPORT PREPARED 8Y TERRA A550CIA TES, INC., DA TED OCTOBER 10, 2005, SHALL 8E INCORPORATED HEREIN
8Y REFERENCE. WERE CONFLICTS BETWEEN THE SOIL REPORT RECOMMENDA 17ONS AND THIS Df -SIGN APPEAR, THE ENGINEER SHALL BE CONTACTED FOR RESOLU10N.
12. NO FINAL GRADE CUT OR EMBANKMENT SLOPE SHALL EXCEED 2.1 (HOR/Z I RT) WITHOUT STABIL/ZA 17ON BY ROCKERY (NOT TO EXCEED 8) OR BY RETAINING WALL,
UNLESS SPECIFICALL Y AUTHOR/ZED BY A LICENSED SOILS ENGINEER AND APPROVED BY CITY OF RENTON. ALL ROCKERIES OVER 4 FEET HIGH AND ALL RETAINING
WALLS OUTSIDE OF CITY OF RENTON RIGHT -OF -WA Y WILL REQUIRE A SEPARA TE BUILDING PERMIT.
13. ALL ROCKERIES CONSTRUCTED ON THIS PROJECT SHALL CONFORM TO CITY OF RENTON STANDARD PLANS. A 4" MINIMUM DIAMETER PERFORA TED, RIGID PVC PIPE (OR
EQUAL -- TO BE APPROVED 8Y THE ENGINEER) SHALL BE INSTALLED BEHIND THE ROCKERY A T OR BELOW THE BOTTOM OF THE LOWEST ROCK /N THE ROCKERY
BACKFILL. THIS PIPE SHALL BE DIRECTL Y CONNECTED TO THE UNDERGROUND STORM DRAINA GE SYSTEM WITH NON -PERFORATED, RIGID PVC PIPE OR A5 OTHERWISE
SHOWN ON THE PLANS. A 5UFF/C/ENT NUMBER OF CLEANOUTS SHALL BE INSTALLED /N THIS DRA/N TO INSURE ADEQUA TF ACCESS FOR MAINTENANCE.
14. WHERE BERM/NG, FILLING, OR OTHER GRADING OCCURS WITHIN THE DRIPL INE OF ANY TREE DENOTED ON THESE PLANS TO BE SA VED, THE GRADING CONTRACTOR
SHALL EXERCISE SPECIAL CARE TO ASSURE THA T THIS WORK DOES NOT RESUL T IN THE DEMISE OF THE TREE. TECHNIQUES SUCH AS ROCKERIES, TREE PROTEC17ON
FENCES, OR OTHER METHODS RECOMMENDED 8Y THE LANDSCAPE ARCHITECT SHALL BE EMPLOYED.
15. ALL EARTHWORK UNDER PA VING TO BE USED 8Y VEHICULAR TRAFFIC SHALL BE COMPACTED TO A T LEA5T 95X OF THE MAXIMUM DRY DENSITY PER A. S T.M.
D-1557-78 (MODIFIED PROCTOR)
16. UNLESS 01HERWJ'SE NOTED, ALL SPOT ELEVA TONS SHOWN /N PA VED AREA5 ARE TOP OF PA WNG.
17. ALL PARK/NG, DR/VEWA Y AND LANDSCAPED AREAS SHALL HA VF A T LEA5T A 1.5Z SLOPE TOWARD THE NEAREST STORM DRAINAGE INTFRCEP170NICONVEYANCE 5YSTEM..
PLAN DETAILS OR FIELD MODIFICA P70NS SHALL NOT SUPERCEOE 1H/5 REQUIREMENT.
18. ANY AREA WHICH HA BEEN STRIPPED OF VEGETA TON AND WHERE NO FURTHER WORK l5 AN01PA TED FOR A PERIOD OF 30 DA YS OR MORE SHALL BE /MMEDIA TEL Y
STAB/L/ZED WJ'TH MULCHING GRASS SEEDING OR OTHER APPROVED EROSION CONTROL 1REA TMENT APDL/CABLE TO THE 11ME OF YEAR /N WES10N. GRA 55 SEED/NG
ALONE WILL BE ACCEPTABLE ONL Y DURING THE MONTHS OF APRIL THROUGH SEPTEMBER INCL U51VE SEEDING MA Y PROCEED WHENEVER lT /5 IN THE INTEREST OF
THE PERMITTEE, BUT MUST BE AUGMENTED WITH MULCHING, NETTING, OR OTHER C/TY OF RENTON-APPROVED 1REA TMENT. STRAW MULCH SHALL CONSIST OF A
MINIMUM THICKNESS OF TM9 INCHES SPREAD EVFNL Y OVER THE SURFACE TO BE PROTECTED. NET 17NG MA Y BE REQUIRED TO HOLD MULCH /N PLACE ON STEEP
SLOPES. GRASS SEEDING SHALL BE ACCOMPLISHED THROUGH THE USE OF A CITY OF RENTON-APPROVED HYDROSEEDER AND SEED MV(7URE OR THROUGH
PLACEMENT OF AN ACCEPTABLE SOD.
19. MAJOR EXPOSED, GRADED SLOPES SHALL BE PROTECTED 8Y CLEAR PLASTIC SHEETING OR SIMILAR APPROVED METHOD UN 17L SUCH 17ME A5 THE VEGETATIVE COVER
HA BEEN ESTABLISHED SUFFICIENTL Y TO INH18/T EROSION.
20. ANY OPEN CUTS OF EXISTING PUBLIC ROA 9WA YS SHALL BE BACKFILLED AND COMPACTED IN ACCORDANCE WITH CITY OF RENTON STANDARDS. ALL CUTS INTO
EXIS17NG ASPHAL T SHALL BE ALONG NEA T, CONI7N0005, SAWED L/NES. A TEMPORARY COLD MIX PA TCH SHALL BE PLACED IMMEDIA TEL Y AFTER BACKFILL AND
COINPACT70N. THE EXIS17NG 5URFAC/NG MUST BE REPLACED /N KIND (OR 4 INCHES OF COMPACTED CLA55 "8" ASPHAL T CONCRETE WHICHEVER /S GREG TER) WITHIN
30 DA YS OF TEMPORARY PA TCHING. THE CONTRACTOR SHALL CLOSEL Y FOLLOW REQUIREMENTS OF THE RIGHT -OF -WA Y PERMIT--SPEC/FICALL Y, ALLOWABLE WORKING
HOURS, DETOUR AND WARN/NG SIGNS, AND N07FICA 110N OF ROAD AL TFRA TONS TO THE POLICE AND/OR OTHER EMERGENCY SERVICES.
21. THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING ADEQUA 7F SAFEGUARDS, SAFETY DEVICES, PRO TEC TI VE EQUIPMENT, FLAGGERS, AND ANY OTHER NEEDED
AC1l6WS TO PROTECT THE LIFE, HEAL TH,, AND SAFETY OF THE PUBL/C, AND TO PROTECT PROPERTY IN CONNEC17ON WITH THE PERFORMANCE OF WORK COVERED 8Y
THE CONTRACT. ANY WORK WITHIN THE TRA FLED RIGHT -OF -WA Y THA T MA Y INTERRUPT NORMAL TRAFFIC FLOW SHALL REQUIRE A T LEAST ONE FLAGGER FOR EACH
LANE OF 1RAFF/C AFFECTED. ALL SEC 77ONS OF THE W S.D. 0. T. STANDARD SPEC/F/CA 17ONS 1-07.23 - TRAFFIC CONTROL SHALL APDL Y.
22. THE CONTRACTOR SHALL KEEP OFF-SITE STREETS CLEAN A T ALL 11ME5 BY SWEEP/NG. WASHING OF THESE STREETS WALL NOT BE ALLOWED WITHOUT PRIOR CITY OF
RENTON APPROVAL.
23 /T SHALL BE THE SOLE RESPONSIBILITY OF THE CONTRACTOR TO ARRANGE RELOCA 17ON OR REMOVAL OF EX/517NG U77LITY POLES, STREET LIGHTS, TRAFFIC SIGNALS,
ETC. BY CONTACTING THE APPROPRIATE U17LITY COMPANIES. REFER TO THE PLANS FOR SPECIFICS.
24. 155UANCE OF THIS BUILDING PERMIT 8Y CITY OF RENTON DOES NOT REL IEVF THE OWNER OF THIS CONIINU/NG LEGAL 08LIGA 110N AND/OR LIABIL /TY CONNECTED WITH
STORM AND SURFACE WA TER DISPOSI1701V AND FURTHER, CITY OF RENTON DOES NOT ACCEPT ANY OBLIGA 17ON FOR THE PROPER FUNC70N/NG AND MAINTENANCE OF
THE SYSTEM PROVIDED.
VERTICAL- NAVD Ilee
HORIZONTAL- NO , W3/1991
DATU M
R-385101
CITY OF
RENTON
Planning/Building/Public Works Dept.
CORE
Zw DESIGN
ENGINEERING
74717 NE 29th Place Suite 101
Bellevue, Washington 98007
425.885.7877 Fax 425.885.7963
PLANNING • SURVEYING
CITY'OF RENTON
Appro e
a
Approved by:
Approved i
kpproved by-.
Date:
Date=
RENTON IfIDDIE A CA DEM Y
GRAD/NG & STORM NOTES
FIELDBOOK:
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