HomeMy WebLinkAboutR-366310EROSION CONTROL NOTES
1. BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS, A PRE CONSTRUCTION
MEE7ING MUST BE HELD WITH 774E CITY OF RENTON DEPARTMENT OF PUBLIC WORKS,
DESIGN ENGINEERS.
2. ALL LIMITS OF CLEARING AND AREAS OF VEGETATION PRESERVATION AS PRESCRIBED
ON THE PLAN SHALL BE CLEARLY FLAGGED IN THE FIELD AND OBSERVED DURING
CONSTRUCTION.
3. ALL REQUIRED SEDIMENTATION/EROSION CONTROL FACILITIES MUST BE CONSTRUCTED
AND IN OPERATION PRIOR TO LAND CLEARING AND /OR OTHER CONSTRUCTION TO INSURE
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 COMPLETED
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 PERMITTEE.
4. 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
PERMITTEE SHALL ANTICIPATE THAT MORE EROSION AND SEDIMENTATION CONTROL
FACILITIES WILL BE NECESSARY TO INSURE COMPLETE SILTATION CONTROL ON THE
PROPOSED SITE. DURING THE COURSE OF CONSTRUCTION, IT SHALL BE THE
OBLIGATION AND RESPONSIBILITY OF THE PERMITTEE TO ADDRESS ANY NEW
CONDITIONS THAT MAY BE CREATED BY HIS 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.
5. APPROVAL OF THE 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.
6. DURING THE TIME PERIOD OF NOVEMBER 1 THROUGH MARCH 31, ALL PROJECT
DISTURBED SOIL AREAS GREATER THEN 5,000 SQUARE FEET, THAT ARE TO BE LEFT
UNWORKED FOR MORE THAN TWELVE (12) HOURS, SHALL BE COVERED BY MULCH,
SODDING, OR PLASTIC COVERING.
7. IN ANY AREA WHICH HAS BEEN STRIPPED OF VEGETATION AND WHERE NO FURTHER WORK
IS ANTICIPATED FOR A PERIOD OF 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 IN QUESTION. GRASS
SEEDING ALONG WILL BE ACCEPTABLE ONLY DURING THE MONTHS OF APRIL THROUGH
SEPTEMBER INCLUSIVE. SEEDING MAY PROCEED, HOWEVER, WHENEVER IT IS IN THE
INTEREST OF THE PERMITTEE, BUT MUST BE AUGMENTED WITH MULCHING, NETTING, OR
OTHER TREATMENT APPROVED BY THE CITY OF RENTON, OUTSIDE THE SPECIFIED TIME
PERIOD.
8. FOR ALL EROSION /SEDIMENTATION CONTROL PONDS WHERE THE DEAD STORAGE DEPTH
EXCEEDS 6 INCHES, A FENCE, A MINIMUM OF 3 FEET HIGH IS REQUIRED, WITH 3:1
SIDE SLOPES.
9. A TEMPORARY GRAVEL CONSTRUCTION ENTRANCE 30' X 50' X 8" OF 4" - 6 INCH
QUARRY SPALLS SHALL BE LOCATED AT ALL POINTS OF VEHICULAR INGRESS AND
EGRESS TO THE CONSTRUCTION SITE.
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31. ANYA%MIIAATED BEDNBlT 011 OR AROIItD STET PROIECiTON 3HIML BE REMOVED xMEOIATELY .SEDYMEM SHNI NOT BE REMOVED
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I . CONDITION OF USE
1.1. CONSTRUCTION ENIRWCE SHALL BE STABILIZED WHEREVER TRAFFIC WILL BE LEAVING A CONSTRUCTION SITE AND TRAVELING ON
PAVED ROADS OR OTHER PAVED AREAS WITHIN 1,000 FEET OF THE SITE.
2 DESIGN AND INSTALLATION SPEC /iCAmous
2.1. NOG FUEL(WODDBASEDMIILCH) MAYBESUBSTITUTED FORORCOMBNIED WITH WARRYSPALLS W ARESTHATWILL BOTSEUSED
FOR PERMANENT ROADS. HOG FUEL IS NOT RECOMMENDED FOR ENTRANCE STABILIZATION IN URBAN ARE A& THE INSPECTOR MAY
ATANYTMEREOURETHEUSEOFOUMMSPALLS FTHE HOG FUEL IS NOT PREVENTING SEONEt1TFRlMI BENIGTRACKEDDONTO
PAVEMENT OR IF THE HOG FUEL IS BEING CARRIED ONTO PAVEMENT.
22. FENCING SHALL BE INSTALLED AS NECESSARY TO RESTRICT TRAFFIC TO THE CONSTRUCTION ENTRANCE.
23. WHENEVER POSSIBLE. THE ENTRANCE SHAL BE CONSTRUCTED ONAFIRM. COMPACTED SUBGRAOE. THIS CAN SUBSTANTIALLY
INCREASE THE EFFECINENESS OFTHE PAD AND REMCE THE NEED FOR MANIEWWCE.
1 MAINTENANCE STANDARDS
3.1. QUARRY SPATS SWILL BE ADDED IF THE PAD IS NO LONGER IN ACCORDANCE WITH THE SPECIFICATIONS.
32. IF THE ENTRANCE IS NOT PREVENTN(S SEDIMENT BEING TRACI(:D ONTO PAVEMENT, THEN ALTERNATIVE MEASURES TO IIT•EP THE
STREETS FREE OF SEDIENT SHALL BE USED. THIS MAY INCLUDE STREET SWEEPING. M INCREASE N THE DNEN310NS OFTHE
ENTRANCE, OR THE INSTALLATION OF THE WHEEL WISH. R WASHING IS USED, IT SHALL BE DONE ON AN AREA COVERED WITH
CRUSHED RDCIL AND WASHED WATER SHALT. DRAM! TO A SEDIMENT TRAP OR POND.
3.3. ANY SEDIMENT THAT IS TRACIMO ONTO PAVEMENT SHALL. BE REMOVED IMMEDIATELY BY SWEEPING. THE SEDIMENT COLLECTED BY
SWEEPING SHALL BE REMOVED OR STABILIZED ON SITE THE PAVEMENT WALL NOT BE CLEANED BY WASTING OOLAN THE STREET,
EXCEPT WHEN SWEEPING IS INEFFECTIVE AND THERE IS ATHREAT TO PUBLIC SAFETY. IF IT NECESSARY TO WASH THE STREETS, A
SMALL SUMP MUST BE CONDUCTED. THE SEDIMENT WOULD THEN BE WASHED INTO THE SUMP MERE IT CAN BE CONTROLLED AND
DISCHARGED APPROPRIATELY.
3A. ANY QUARRY SPALLS THAT ARE LOOSENED FROM THE PAD AND END UP ON THE ROADWAY SHALL BE REMOVED IIEDIATELY.
3.5. IF VEHICLES ARE ENTERING OR EXITING THE SITES AT POINTS OTHER THAN T CONSTRUCTION ENTRANCE(S). FENCING SHALL BE
INSTALLED TO CONTROLTRAFFIO.
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R- 366310
RECOMMENDED
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