HomeMy WebLinkAboutS-336401SURFACE WATER DRAINAGE NOTES AND SPECIFICATIONS
1. BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS, A PRE - CONSTRUCTION MEETING
MUST BE HELD WITH THE CITY OF RENTON PLAN REVIEWER.
2. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH THE 1996 STANDARD SPECIFICATIONS FOR ROAD,
BRIDGE AND MUNICIPAL CONSTRUCTION PREPARED BY WSDOT AND THE AMERICAN PUBLIC WORKS
ASSOCIATION (APWA), AS AMENDED BY THE CITY OF RENTON PUBLIC WORKS DEPARTMENT.
3. THE SURFACE WATER DRAINAGE SYSTEM SHALL BE CONSTRUCTED ACCORDING TO THE APPROVED
PLANS, WHICH ARE ON FILE IN THE PUBLIC WORKS DEPARTMENT. ANY DEVIATION FROM THE APPROVED
PLANS WILL REQUIRE WRITTEN APPROVAL FROM THE CITY OF RENTON PUBLIC WORKS DEPARTMENT,
SURFACE WATER UTILITY SECTION.
4. A COPY OF THESE APPROVED PLANS MUST BE ON THE JOB SITE WHENEVER CONSTRUCTION IS IN
PROGRESS.
5. DATUM SHALL BE NAVD 88 UNLESS OTHERWISE APPROVED BY THE CITY OF RENTON PUBLIC WORKS
DEPARTMENT. REFERENCE BENCHMARK AND ELEVATIONS ARE NOTED ON THE PLANS.
6. ALL SEDIMENTATION /EROSION FACILITIES MUST BE IN OPERATION PRIOR TO CLEARING AND BUILDING
CONSTRUCTION, AND THEY MUST BE SATISFACTORILY MAINTAINED UNTIL CONSTRUCTION IS COMPLETED AND
THE POTENTIAL FOR ON -SITE EROSION HAS PASSED.
Z ALL RETENTION /DETENTION FACILITIES MUST BE INSTALLED AND IN OPERATION PRIOR TO OR IN
CONJUNCTION WITH ALL CONSTRUCTION ACTIVITY UNLESS OTHERWISE APPROVED BY THE PUBLIC WORKS
DEPARTMENT, SURFACE WATER UTILITY SECTION.
8. GRASS SEED MAY BE APPLIED BY HYDROSEEDING. THE GRASS SEED MIXTURE, OTHER THAN CITY OF
RENTON APPROVED STANDARD MIXES, SHALL BE SUBMITTED BY A LANDSCAPE ARCHITECT AND APPROVED
BY THE PUBLIC WORKS DEPARTMENT, SURFACE WATER UTILITY SECTION.
9. ALL PIPE AND APPURTENANCES SHALL BE LAID ON A PROPERLY PREPARED FOUNDATION IN
ACCORDANCE WITH SECTION 7- 023(1) OF THE CURRENT STATE OF WASHINGTON STANDARD SPECIFICATION
FOR ROAD AND BRIDGE CONSTRUCTION. THIS SHALL INCLUDE NECESSARY LEVELING OF THE TRENCH
BOTTOM OR THE TOP OF THE FOUNDATION MATERIAL, AS WELL AS PLACEMENT AND COMPACTION OF
REQUIRED BEDDING MATERIAL, TO UNIFORM GRADE SO THAT THE ENTIRE LENGTH OF THE PIPE WILL BE
SUPPORTED ON A UNIFORMLY DENSE, UNYIELDING BASE. ALL PIPE BEDDING SHALL BE APWA CLASS "C ",
WITH THE EXCEPTION OF PVC PIPE. ALL TRENCH BACKFILL SHALL BE COMPACTED TO MINIMUM 95% FOR
PAVEMENT AND STRUCTURAL FILL AND 90% OTHERWISE PER ASTM D- 1557 -70. PEA GRAVEL BEDDING
SHALL BE 6 INCHES OVER AND UNDER PVC PIPE.
10. GALVANIZED STEEL PIPE AND ALUMINIZED STEEL PIPE FOR ALL DRAINAGE FACILITIES SHALL HAVE
ASPHALT TREATMENT #1 OR BETTER INSIDE AND OUTSIDE.
11. STRUCTURES 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 CATCH BASIN GRATES SHALL BE DEPRESSED 0.10 FEET BELOW PAVEMENT LEVEL.
13. OPEN CUT ROAD CROSSINGS THROUGH EXISTING PUBLIC RIGHT OF WAY WILL NOT BE ALLOWED
UNLESS SPECIFICALLY APPROVED BY CITY OF RENTON PLANNING /BUILDING /PUBLIC WORKS ADMINISTRATOR.
14. ROCK FOR EROSION PROTECTION OF ROADSIDE DITCHES, WHERE REQUIRED, SHALL BE OF SOUND
QUARRY ROCK PLACED TO A DEPTH OF ONE (1) FOOT AND MUST MEET THE FOLLOWING SPECIFICATIONS.
4 - 8 INCH ROCK / 40 - 70% PASSING,
2 - 4 INCH ROCK / 30 - 40% PASSING, AND
LESS THAN 2 INCH ROCK / 10 - 20% PASSING.
15. ALL BUILDING DOWNSPOUTS AND FOOTING DRAINS SHALL BE CONNECTED TO THE STORM DRAINAGE
SYSTEM, UNLESS APPROVED BY THE CITY PLAN REVIEWER OR SURFACE WATER UTILITY SECTION. AN
ACCURATELY DIMENSIONED, CERTIFIED AS -BUILT DRAWING OF THIS DRAINAGE SYSTEM WILL BE SUBMITTED
TO THE CITY UPON COMPLETION.
16. ISSUANCE OF THE BUILDING OR CONSTRUCTION PERMITS BY THE CITY OF RENTON DOES NOT RELIEVE
THE OWNER OF 774E CONTINUING LEGAL OBLIGATION AND /OR LIABILITY CONNECTED WITH STORM SURFACE
WATER DISPOSITION. FURTHER, THE CITY OF RENTON DOES NOT ACCEPT ANY OBLIGATION FOR THE
PROPER FUNCTIONING AND MAINTENANCE OF THE SYSTEM PROVIDED DURING CONSTRUCTION.
17. THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING ADEQUATE SAFEGUARD, SAFETY DEVICES,
PROTECTIVE EQUIPMENT, FLAGGERS, AND ANY OTHER NEEDED ACTIONS TO PROTECT THE LIFE, HEALTH,
AND SAFETY OF THE PUBLIC, AND TO PROTECT PROPERTY IN CONNECTION WITH THE PERFORMANCE OF
WORK COVERED BY THE CONTRACT. ANY WORK WITHIN THE TRAVELED RIGHT OF WAY THAT MAY
INTERRUPT NORMAL TRAFFIC FLOW SHALL REQUIRE A TRAFFIC CONTROL PLAN APPROVE BY THE PUBLIC
WORKS DEPARTMENT, TRANSPORTATION SYSTEMS DIVISION. ALL SECTIONS OF THE WSDOT STANDARD
SPECIFICATIONS 1 -07 -23 TRAFFIC CONTROL SHALL APPLY.
18. SPECIAL DRAINAGE MEASURES WILL BE REQUIRED IF THE PROJECT LOCATION IS WITHIN THE AQUIFER
PROTECTION AREA (APA).
19. BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS, A PRE - CONSTRUCTION MEETING
MUST BE HELD WITH THE CITY OF RENTON, PUBLIC WORKS DESIGN ENGINEER.
20. ALL LIMITS OF CLEARING AND AREAS OF VEGETATION PRESERVATION AS PRESCRIBED ON 774E
PLAN(S) SHALL BE CLEARLY FLAGGED IN THE FIELD AND OBSERVED DURING CONSTRUCTION.
21. ALL REQUIRED SEDIMENTATION /EROSION CONTROL FACILITIES MUST BE CONSTRUCTED AND IN
OPERATION PRIOR TO LAND CLEARING AND /OR CONSTRUCTION TO ENSURE THAT SEDIMENT LADEN WATER
DOES NOT ENTER THE NATURAL DRAINAGE SYSTEM. ALL EROSION AND SEDIMENT FACILITIES SHALL BE
MAINTAINED IN A SATISFACTORY CONDITION UNTIL SUCH TIME THAT CLEARING AND /OR CONSTRUCTION IS
COMPLETE AND POTENTIAL FOR ON -SITE EROSION HAS PASSED. THE IMPLEMENTATION, MAINTENANCE,
REPLACEMENT AND ADDITIONS TO EROSION /SEDIMENTATION CONTROL SYSTEMS SHALL BE THE
RESPONSIBILITY OF THE PERMITEE.
22. THE EROSION AND SEDIMENTATION CONTROL SYSTEMS DEPICTED ON THIS DRAWING ARE INTENDED TO
BE MINIMUM REQUIREMENTS TO MEET ANTICIPATED SITE CONDITIONS. AS CONSTRUCTION PROGRESSES AND
UNEXPECTED OR SEASONAL CONDITIONS DICTATE, THE PERMITEE SHALL ANTICIPATE THAT MORE EROSION
AND SEDIMENTATION CONTROL FACILITIES WILL BE NECESSARY TO ENSURE COMPLETE SILTATION CONTROL
ON THE PROPOSED SITE. DURING THE COURSE OF CONSTRUCTION, IT SHALL BE THE OBLIGATION AND
RESPONSIBILITY OF THE PERMITEE TO ADDRESS ANY NEW CONDITIONS THAT MAY BE CREATED BY THE
ACTIVITIES AND TO PROVIDE ADDITIONAL FACILITIES, OVER AND ABOVE MINIMUM REQUIREMENTS, AS MAY
BE NEEDED, TO PROTECT ADJACENT PROPERTIES AND WATER QUALITY OF THE RECEIVING DRAINAGE
SYSTEM.
23. APPROVAL OF THIS PLAN IS FOR EROSION /SEDIMENTATION CONTROL ONLY. IT DOES NOT CONSTITUTE
AN APPROVAL OF STORM DRAINAGE DESIGN, SIZE NOR LOCATION OF PIPES, RESTRICTORS, CHANNELS, OR
RETENTION FACILITIES.
24. DURING THE TIME PERIOD OF OCTOBER 1ST THROUGH APRIL 30TH, ALL PROJECT DISTRIBUTED SOIL
AREAS GREATER THAN 5,000 SQUARE FEET, THAT ARE TO BE LEFT UN- WORKED FOR MORE THAN 12
HOURS, SHALL BE COVERED BY MULCH, SODDING OR PLASTIC COVERING.
25. IN ANY AREA WHICH HAS BEEN STRIPPED OF VEGETATION AND WHERE NO FURTHER WORK IS
ANTICIPATED FOR A PERIOD 30 DAYS OR MORE, ALL DISTURBED AREAS MUST BE IMMEDIATELY STABILIZED
WITH MULCHING, GRASS PLANTING OR OTHER APPROVED EROSION CONTROL TREATMENT APPLICABLE TO
THE TIME OF YEAR. GRASS SEEDING ALONE WILL BE ACCEPTABLE ONLY DURING THE MONTHS OF APRIL
THROUGH SEPTEMBER, INCLUSIVE. SEEDING MAY PROCEED, HOWEVER, WHENEVER IT IS IN THE INTEREST
OF THE PERMITEE BUT MUST BE AUGMENTED WITH MULCHING, NETTING OR OTHER TREATMENT APPROVED
BY THE CITY OF RENTON, OUTSIDE THE SPECIFIED TIME PERIOD.
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WATER UTILITY NOTES AND SPECIFICATIONS
1. THESE NOTES SHALL APPEAR FOR PROJECTS FOR THE WATER UTILITY.
2. ALL WORK MATERIAL SHALL BE IN CONFORMANCE WITH THE STANDARDS AND SPECIFICATIONS OF THE
CITY OF RENTON PLANNING /BUILDING /PUBLIC WORKS DEPARTMENT AND THE 1996 EDITION OF THE
WSDOT /APWA STANDARDS AND SPECIFICATIONS, AS APPROVED AND MODIFIED BY THE CITY OF RENTON IN
THE RENTON STANDARD PLANS & SPECIFICATIONS. A SET OF APPROVED PLANS SHALL BE KEPT ON SITE
AT ALL TIMES DURING CONSTRUCTION.
3. ALL LOCATIONS OF EXISTING UTILITIES SHOWN ARE APPROXIMATE AND IT SHALL BE THE
CONTRACTOR'S RESPONSIBILITY TO VERIFY THE TRUE AND CORRECT LOCATION SO AS TO AVOID DAMAGE
OR DISTURBANCE. FOR UTILITY LOCATES CALL 48 -HOUR LOCATORS 800- 424 -5555.
4. ALL WATERMAIN PIPE IS TO BE CEMENT LINED DUCTILE IRON PIPE CONFORMING TO AWWA C110 AND
C111 OR LATEST REVISION, THICKNESS CLASS 52. CEMENT MORTAR LINING AND SEAL COATING SHALL
CONFORM TO AWWA C104 OR LATEST REVISION. PIPE JOINTS TO BE PUSH -ON OR MECHANICAL JOINT.
BEDDING TO BE CLASS C. ALL DUCTILE IRON PIPE AND FITTINGS SHALL BE POLYETHYLENE WRAPPED PER
ANSI /AWWA C105/A21.5 -93 STANDARDS.
5. CAST IRON AND DUCTILE IRON FITTINGS SHALL BE CEMENT LINED, PRESSURE RATED AS NOTED ON
PLANS, AND IN ACCORDANCE WITH ANSI /AWWA C110/A21.10 -87. CEMENT LINING SHALL BE IN
ACCORDANCE WITH ANSI /AWWA C104142114 -90. IF FITTINGS ARE 3 TO 12 INCHES IN DIAMETER AND
HAVE MECHANICAL JOINTS, THE FITTINGS SHALL IN ACCORDANCE WITH EITHER ANSI /AWWA
C110- A21.10 -87 OR ANSI /AWWA C153/A21.53 -94. THREE (3) INCH TO 12 INCH DIAMETER FITTINGS,
WHICH HAVE MECHANICAL JOINTS AND /OR FLANGED JOINTS, SHALL BE IN ACCORDANCE WITH ANSI /AWWA
C110/A21.10.87 OR A COMBINATION OF ANSI /AWWA C110/A21.10.87 AND ANSI /AWWA C153/A21.53 -94
SUCH THAT THE PORTION OF THE FITTING WITH A MECHANICAL JOINT(S) MAY BE WITH ANSI /AWWA
C153/A21.53 -94 AND THAT PORTION OF THE FITTING WITH FLANGED JOINT(S) SHALL BE IN ACCORDANCE
WITH AWWA C110/A21.10 -87. ACCEPTANCE TESTING IN ACCORDANCE WITH SECTION 53.53 OF ANSI /AWWA
SECTION 10 -4.3 OF ANSI /AWWA C11O/A21.10-87 SHALL BE OBTAINED BY THE CONTRACTOR AND
TRANSMITTED TO THE OWNER.
6. GATE VALES SHALL BE IRON BODY, BRONZED - MOUNTED, DOUBLE DISC WITH BRONZE WEDGING DEVICE
AND O -RING STUFFING BOX (AWWA C500) OR OF RESILIENT SEATED TYPE (AWWA C509). VALVES SHALL
BE DESIGNED FOR A MINIMUM WATER OPERATING PRESSURE OF 200 PSI. GATE VALVES SHALL BE CLOW
LIST 14, MUELLER COMPANY NO. A2380 OR M & H.
7. ALL WATERMAINS 10 INCHES AND SMALLER TO MAINTAIN A MINIMUM COVER OF 36 INCHES BELOW
FINISH GRADE. ALL WATERMAIN 12 INCHES AND LARGER SHALL BE AT A MINIMUM OF 48 INCHES BELOW
FINISH GRADE WHERE UTILITY CONFLICTS OCCUR, WATERMAINS ARE TO BE LOWERED TO CLEAR.
8. ALL WATERMAINS AND SERVICES SHALL BE PRESSURE TESTED TO A MINIMUM OF 200 PSI OR 150 PSI
OVER OPERATING PRESSURE, IN ACCORDANCE WITH THE SPECIFICATIONS OF THE CITY OF RENTON AND
THE WASHINGTON STATE HEALTH DEPARTMENT. ALL PRESSURE TESTING SHALL BE DONE IN THE
PRESENCE OF A REPRESENTATIVE OF THE CITY OF RENTON. THE QUANTITY OF WATER LOST FROM THE
MAIN SHALL NOT EXCEED THE NUMBER OF GALLONS PER HOUR AS LISTED IN CITY OF RENTON STANDARD
PLANS & SPECIFICATIONS 7- 11.3(11). THE LOSS IN PRESSURE SHALL NOT EXCEED 5 PSI DURING THE 2
HOUR TEST PERIOD.
9. ALL WATERMAINS AND SERVICES SHALL BE DISINFECTED BY THE INJECTION OF A 50 PPM (MINIMUM
CONCENTRATION) CHLORINE /WATER SOLUTION. DRY CALCIUM HYPOCHLORITE SHALL NOT BE PLACED IN
THE PIPE AS LAID. CHLORINE SHALL BE METERED /INJECTED IN ACCORDANCE WITH SECTION 7- 11.3(12)E
OR 7- 11.3(12)F OF THE STANDARD SPECIFICATIONS REFERENCED ABOVE.
10. A PRE - CONSTRUCTION CONFERENCE IS REQUIRED PRIOR TO ANY CONSTRUCTION. A MINIMUM OF FIVE
(5) WORKING DAYS NOTICE IS REQUIRED FOR SCHEDULING.
11. TWENTY -FOUR (24) HOURS NOTICE WILL BE REQUIRED PRIOR TO STARTING NEW CONSTRUCTION.
12. IT SHALL BE THE CONTRACTOR'S RESPONSIBILITY TO SECURE ALL NECESSARY PERMITS PRIOR TO
STARTING CONSTRUCTION.
13. INSTALLATION OF CORPORATE STOPS, WATER SERVICES, LINES AND METERS SHALL NOT BE DONE
UNTIL ALL SERVICE AGREEMENTS, METER APPLICATIONS, CONSTRUCTION PERMITS, AND PAYMENT OF FEES
HAVE BEEN MADE TO THE CITY OF RENTON.
14. ALL CONNECTION TO EXISTING MAINS IS TO BE ACCOMPLISHED BY THE CITY OF RENTON, EXCEPT WET
TAPS, WHICH MAY BE MADE BY APPROVED WET TAP CONTRACTORS WITH PRIOR APPROVAL FROM THE
PUBLIC WORKS DEPARTMENT. ALL NECESSARY EXCAVATION AND MATERIALS ARE TO BE SUPPLIED BY THE
CONTRACTOR AND BE ON -SITE PRIOR TO CITY NOTIFICATIONS.
15. INSPECTION WILL BE ACCOMPLISHED BY A REPRESENTATIVE OF THE CITY OF RENTON. IT SHALL BE
THE CONTRACTOR'S RESPONSIBILITY TO NOTIFY DEVELOPMENT SERVICES TWENTY FOUR (24) HOURS IN
ADVANCE OF BACKFILLING ALL CONSTRUCTION. THE CONTRACTOR, AS WELL AS THE ENGINEERS, SHALL
KEEP AS -BUILT DRAWINGS.
16. CONTRACTOR TO PROVIDE PLUGS AND TEMPORARY BLOW -OFF ASSEMBLIES FOR TESTING AND PURITY
ACCEPTANCE PRIOR TO FINAL TIE -IN.
17 FOR CITY PROJECTS SUCH AS TELEMETRY CONDUIT, THE PVC PIPE USED SHALL BE ALL CHEMICAL
PROCESS LINES SHALL BE SCHEDULE 80 PVC PIPE. SCHEDULE 40 IN UNIMPROVED AREAS AND SCHEDULE
80 PVC PIPE UNDER IMPROVED AREAS.
CITY OF RENTON STANDARD
1 ALL MATERIALS AND WORKMANSHIP SHALL BE IN ACCORDANCE WITH THE CITY OF RENTON STANDARD
AND SUPPLEMENTAL SPECIFICATIONS 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.
REVISION
SANITARY SEWER NOTES AND SPECIFICATIONS
1. ALL WORK MATERIALS SHALL BE IN CONFORMANCE WITH THE STANDARDS AND SPECIFICATION OF THE
CITY OF RENTON UTILITY DEPARTMENT AND THE LATEST EDITION OF THE WSDOT /APWA STANDARDS AND
SPECIFICATIONS.
2. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH "STANDARD SPECIFICATIONS FOR MUNICIPAL
PUBLIC WORKS CONSTRUCTION" PREPARED BY WASHINGTON STATE CHAPTER AMERICAN PUBLIC WORKS
ASSOCIATION, LATEST EDITION (APWA) AND CITY OF RENTON STANDARD SPECIFICATIONS.
3. ALL LOCATIONS OF EXISTING UTILITIES SHOWN ARE APPROXIMATE AND IT SHALL BE THE
CONTRACTOR'S RESPONSIBILITY TO VERIFY THE TRUE AND CORRECT LOCATION SO AS TO AVOID DAMAGE
OR DISTURBANCE.
4. CONTRACTOR IS SOLELY RESPONSIBLE FOR THE MEANS, METHODS AND SEQUENCES OF CONSTRUCTION
AND FOR THE SAFETY OF WORKERS AND OTHERS ON THE CONSTRUCTION SITE.
5. IT SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR TO OBTAIN STREET USE AND ANY OTHER
RELATED PERMITS PRIOR TO.-ANY CONSTRUCTION.
6. PLANS APPROVED BY THE CITY OF RENTON, PUBLIC WORKS DEPARTMENT SHALL TAKE PRECEDENCE
OVER ALL OTHER PLANS..
7. A COPY OF THESE APPROVED PLANS MUST BE ON THE JOB SITE WHENEVER CONSTRUCTION IS IN
PROGRESS.
8. THE CONTRACTOR SHALL PROVIDE THE CITY OF RENTON WITH AN AS -BUILT DRAWING OF THE
SANITARY SEWER SYSTEM; WHICH HAS BEEN STAMPED AND SIGNED BY A LICENSED PROFESSIONAL
ENGINEER OR LICENSED PROFESSIONAL SURVEYOR.
9. BACKFILL SHALL BE PLACED EQUALLY ON BOTH SIDES OF THE PIPE IN LAYERS WITH A LOOSE
AVERAGE DEPTH OF 6 INCHES, MAXIMUM DEPTH OF 8 INCHES, THOROUGHLY TAMPING EACH LAYER TO 95
PERCENT OF MAXIMUM DENSITY. THESE COMPACTED LAYERS MUST EXTEND FOR ONE PIPE DIAMETER ON
EACH SIDE OF THE PIPE OR TO THE SIDE OF THE TRENCH. MATERIALS TO COMPLETE THE FILL OVER PIPE
SHALL BE THE SAME AS DESCRIBED.
10. DATUM SHALL BE CITY OF RENTON, 1988 NAVD.
11. ALL DISTURBED AREAS SHALL BE SEEDED AND MULCHED OR OTHERWISE STABILIZED TO THE
SATISFACTION OF THE DEPARTMENT FOR THE PREVENTION OF ON -SITE EROSION AFTER THE COMPLETION
OF CONSTRUCTION.
12. ALL PIPE AND APPURTENANCES SHALL BE LAID ON A PROPERLY PREPARED FOUNDATION IN
ACCORDANCE WITH SECTION 7 OF THE CURRENT STATE OF WASHINGTON STANDARD SPECIFICATIONS FOR
ROAD AND BRIDGE CONSTRUCTION. THIS SHALL INCLUDE NECESSARY LEVELING OF THE TRENCH BOTTOM
OR THE TOP OF THE FOUNDATION MATERIAL, AS WELL AS PLACEMENT AND COMPACTION OF REQUIRED
BEDDING MATERIAL, TO UNIFORM GRADE SO THAT THE ENTIRE LENGTH OF THE PIPE WILL BE SUPPORTED
ON A UNIFORMLY DENSE, .UNYIELDING BASE. PIPE BEDDING SHALL BE PEA GRAVEL 6 INCHES ABOVE AND
BELOW THE PIPE `
13. SANITARY SEWER PIPE ;SHALL BE POLYVINYL CHLORIDE (PVC) RUBBER GASKETED ASTM D 3034, SDR
35, OR DUCTILE IRON CLASSO.
14. IN UNIMPROVED AREAS, MANHOLE TO EXTEND MINIMUM 6 INCHES AND MAXIMUM 12 INCHES ABOVE
FINISHED GRADE. IN PAVED AREA, COVER MUST SLOPE IN ALL DIRECTIONS TO MATCH PAVING.
GENERAL SPECIFICATIONS:
1. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH THE WSDOT /APWA STANDARD SPECIFICATIONS (LATEST
EDITION) FOR ROAD, BRIDGE, -AND MUNICIPAL CONSTRUCTION AND CITY OF RENTON STANDARDS. IT SHALL BE THE
SOLE RESPONSIBILITY OF THE CONTRACTOR TO CORRECT ANY ERROR, OMISSION, OR VARIATION FROM THE ABOVE
REQUIREMENTS FOUND IN THESE PLANS. ALL CORRECTIONS SHALL BE AT NO ADDITIONAL COST OR LIABILITY TO
THE OWNER.
2. UTILITIES AND GRADES SHALL BE CONSTRUCTED PER THE APPROVED PLANS. A COPY OF THESE APPROVED
PLANS MUST BE ON THE JOB SITE WHENEVER CONSTRUCTION IS IN PROGRESS.
3. CONSTRUCTION NOISE SHALL BE LIMITED AS PER CITY OF RENTON CODE.
4. IT SHALL BE THE CONTRACTOR'S RESPONSIBILITY TO OBTAIN ALL CONSTRUCTION EASEMENTS AND
RIGHT -OF -WAY PERMITS NECESSARY BEFORE INITIATING OFFSITE WORK WITHIN THE ROAD RIGHTS -OF -WAY.
5. FRANCHISED UTILITIES OR OTHER INSTALLATIONS THAT ARE NOT SHOWN ON THESE APPROVED PLANS SHALL
NOT BE CONSTRUCTED UNLESS-AN APPROVED SET OF PLANS IS SUBMITTED TO THE CITY OF RENTON THREE DAYS
PRIOR TO CONSTRUCTION.
6. WHERE A NEW PIPE CLEARS AN EXISTING OR NEW UTILITY BY 6- INCHES OR LESS, STYROFOAM BLOCKING
SHALL BE INSTALLED AS A CUSHION BETWEEN THE TWO UTILITIES.
7. THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING ADEQUATE SAFEGUARDS, SAFETY DEVICES,
PROTECTIVE EQUIPMENT, FLAGGERS, AND ANY OTHER NEEDED ACTIONS TO PROTECT THE LIFE, HEALTH, AND SAFETY
OF WORKERS AND OF THE PUBLIC, AND TO PROTECT PROPERTY IN CONNECTION WITH THE PERFORMANCE OF WORK
COVERED BY THE CONTRACTOR. ANY WORK WITHIN THE TRAVELED RIGHT -OF -WAY THAT MAY INTERRUPT NORMAL
TRAFFIC FLOW SHALL REQUIRE AT LEAST ONE FLAGGER FOR EACH LANE OF TRAFFIC AFFECTED. ALL SECTIONS OF
THE WSDOT STANDARD SPECiFICATIONS 1 -07.23 TRAFFIC CONTROL, SHALL APPLY.
8. EXISTING UTILITIES AND UNDERGROUND STRUCTURES SHOWN ON THE PLAN ARE BASED UPON THE BEST
AVAILABLE PUBLIC RECORDS AND \OR PRIVATE RECORDS AS SUPPLIED BY THE PROJECT OWNER AND \OR DATA
OBTAINED VERBALLY FROM OWNERS OR OFFICIALS ASSOCIATED WITH THE PARTICULAR UTILITY. NEITHER THE OWNER
NOR THE ENGINEER GUARANTEE THE ACCURACY OR COMPLETENESS OF THIS INFORMATION AND ASSUME NO
RESPONSIBILITY FOR IMPROPER LOCATIONS OR FAILURE TO SHOW UTILITY LOCATIONS ON THE CONSTRUCTION PLANS.
OTHER UNDERGROUND FACILITIES NOT SHOWN ON THE DRAWINGS MAY BE ENCOUNTERED DURING THE COURSE OF
THE WORK. ALL INVERT ELEVATIONS SHOWN ON THE DRAWINGS SHALL BE VERIFIED BY THE CONTRACTOR PRIOR TO
CONSTRUCTION.
9. IF EXISTING UTILITIES ARE DAMAGED, THE CONTRACTOR SHALL IMMEDIATELY NOTIFY THE OWNER AND THE
ENGINEER. THE CONTRACTOR SHALL RESTORE THE UTILITY TO ITS EXISTING CONDITION. (WSDOT SECTION 1 -07.17
APWA SUPPLEMENT).
10. IF CHANGED CONDITIONS ARE ENCOUNTERED, THE CONTRACTOR SHALL NOTIFY THE ENGINEER PROMPTLY OF (1)
PREDEVELOPED SUBSURFACE CONDITIONS DIFFERING FROM THOSE INDICATED IN THE PLANS, OR (2) PREDEVELOPED
UNKNOWN SUBSURFACE CONDITIONS, OF AN UNUSUAL NATURE, DIFFERING MATERIALLY FROM THOSE ORDINARILY
ENCOUNTERED AND GENERALLY RECOGNIZED AS INHERENT IN WORK OF THE CHARACTER PROVIDED FOR IN THE
CONTRACT. THE CONTRACTOR AND /OR THE OWNER SHALL MAKE NO CLAIMS TO THE ENGINEER FOR COMPENSATION
FOR EXTRA WORK RESULTING FROM CHANGED CONDITIONS UNLESS THE ENGINEER OR OWNER HAS APPROVED THE
WORK IN WRITING. ( WSDOT SEC 1 ?04.7)
11. WHERE THE PLANS CALL FOR UTILITIES TO BE RELOCATED BY OTHERS, THE CONTRACTOR SHALL NOTIFY THE
UTILITY COMPANY AND COORDINATE HIS WORK SO AS TO AVOID CONFLICTS.
12. ALL EXCAVATION, TRENCHING, SUBGRADE PREPARATION, FILL PLACEMENT AND COMPACTION AND ALL SOIL
WORK IN GENERAL SHALL BE CONDUCTED IN COMPLIANCE WITH THE RECOMMENDATIONS OF THE PROJECT SOILS
ENGINEER.
13. THE CONTRACTOR SHALL BE RESPONSIBLE FOR HIRING A PROFESSIONAL LAND SURVEYOR TO REFERENCE
EXISTING MONUMENTS ON OR ADJOINING THE SITE PRIOR TO DEMOLITION OR CONSTRUCTION ACTIVITIES AND TO
REESTABLISH SAID POINTS AT PROJECT COMPLETION. THIS REESTABLISHMENT SHALL BE DOCUMENTED BY RECORD
OF SURVEY OR CORNER RECORD AS DESCRIBED IN W.A.C. 332 -120.
14. GROUNDWATER CONDITIONS VARY SEASONALLY. THE CONTRACTOR IS REQUIRED TO REVIEW THE PROJECT SOILS
INFORMATION AND OR PERFORM A SITE VISIT TO FAMILIARIZE HIMSELF WITH GROUNDWATER CONDITIONS ON -SITE
AND WITHIN THE IMMEDIATE AREA.' DEWATERING OF UTILITY TRENCHES SHALL BE CONSIDERED INCIDENTAL TO THE
PROJECT AND INCLUDED IN THE 'BID AMOUNT.
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