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CONCRETE MATERIALS ARE NOT AS TRENCH BEDDING AND TRENCH MATERIALS FOR WATERMAINS,
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DEPARTMENT TYPICAL TRENCH AND BACKFILL GAZ 9/28/2013 I
EROSIONISEDIMENTATION CONTROL NOTES'
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1, APPROVAL OF THIS EROSIONlSEDIMENTATION CONTROL (ESC) PLAN DOES NOT CONSTITUTE AN APPROVAL OF
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PERMANENT ROAD OR DRAINAGE DESIGN (I.E. SIZE AND LOCATION OF ROADS, PIPES, RESTRICTORS, CHANNELS,
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RETENTION FACILITIES, UTILITIES, ETC.).
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2. THE IMPLEMENTATION OF THESE ESC PLANS AND THE CONSTRUCTION, MAINTENANCE, REPLACEMENT, AND
UPGRADING OF THESE ESC FACILITIES IS THE RESPONSIBILITY OF THE APPLICANT/CONTRACTOR UNTIL ALL
CONSTRUCTION IS APPROVED-
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3. THE BOUNDARIES OF THE CLEARING LIMITS SHOWN ON THIS PLAN SHALL BE CLEARLY FLAGGED IN THE FIELD PRIOR
TO CONSTRUCTION. ORANGE CONSTRUCTION FENCING (42- HIGH) SHALL BE USED TO DELINEATE CLEARING LIMITS
BETWEEN CONSTRUCTION AREAS AND WETLANDS. STREAM BUFFERS, NATIVE GROWTH PROTECTION EASEMENTS
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(NGPE), AREAS NOT TO BE DISTURBED AS SHOWN ON CONSTRUCTION PLANS AND AREAS WHICH MAY BE ADVERSELY
IMPACTED AS DETERMINED BY THE CITY. DURING THE CONSTRUCTION PERIOD, NO DISTURBANCE BEYOND THE
FLAGGED CLEARING LIMITS SHALL BE PERMITTED. THE FLAGGING SHALL BE MAINTAINED BY THE
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APPLICANTlCONTRACTOR FOR THE DURATION OF CONSTRUCTION.
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4. THE ESC FACILITIES SHOWN ON THIS PLAN MUST BE CONSTRUCTED IN CONJUNCTION WITH ALL CLEARING AND
GRADING ACTIVITIES, AND IN SUCH A MANNER AS TO ENSURE THAT SEDIMENT LADEN WATER DOES NOT ENTER THE
DRAINAGE SYSTEM OR VIOLATE APPLICABLE WATER STANDARDS.
S. THE ESC FACILITIES SHOWN ON THIS PLAN ARE THE MINIMUM REQUIREMENTS FOR ANTICIPATED SITE CONDITIONS -
DURING THE CONSTRUCTION PERIOD, THESE ESC FACILITIES SHALL BE UPGRADED (I.E. ADDITIONAL SUMPS,
RELOCATION OF DITCHES AND SILT FENCES, ETC.) AS NEEDED FOR UNEXPECTED STORM EVENTS.
6, THE ESC FACILITIES SHALL BE INSPECTED DAILY BY THE, 4PPLICANTICONTR4CTOR AND MAINTAINED AS NECESSARY
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TO ENSURE THEIR CONTINUED FUNCTIONING.
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7. ANY AREA STRIPPED OF VEGETATION, INCLUDING ROADWAY EMBANKMENTS, WHERE NO FURTHER WORK I5
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ANTICIPATED OR A PERIOD OF 2 DAYS (WET SEASON) OR 7 DAYS (DRY SEASON), SHALL BE IMMEDIATELY STABILIZED
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WITH THE APPROVED ESC METHODS (I.E. SEEDING, MULCHING, NETTING, EROSION BLANKETS, ETC.)00
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8. ANY AREA NEEDING ESC MEASURES, NOT REQUIRING IMMEDIATE ATTENTION, SHALL BE ADDRESSED WITHIN 15 DAYS.
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9. THE ESC FACILITIES ON INACTIVE SITES SHALL BE INSPECTED AND MAINTAINED A MINIMUM OF ONCE A MONTH OR
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WITHIN THE 24 HOURS FOLLOWING A STORM EVENT.
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10. AT NO TIME SHALL MORE THAN ONE FOOT OF SEDIMENT BE ALLOWED TO ACCUMULATE WITHIN A CATCH BASIN- ALL
CATCH BASINS AND CONVEYANCE LINES SHALL BE CLEANED PRIOR TO PAVING. THE CLEANING OPERATION SHALL
NOT FLUSH SEDIMENT -LADEN WATER INTO THE DOWNSTREAM SYSTEM-
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11. STABILIZED CONSTRUCTION ENTRANCES AND WASH PADS SHALL BE INSTALLED AT THE BEGINNING OF
CONSTRUCTION AND MAINTAINED FOR THE DURATION OF THE PROJECT. ADDITIONAL MEASURES MAY BE REQUIRED
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TO ENSURE THAT ALL PAVED AREAS ARE KEPT CLEAN FOR THE DURATION OF THE PROJECT.
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12. WET SEASON REQUIREMENTS AS DESCRIBED IN APPENDIX D, SECTION D,2.4.2 OF THE KCSWDM ARE IN EFFECT
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BEGINNING OCTOBER 1 THROUGH APRIL 30.
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13. ANY PERMANENT RETENTIONIDETENTION FACILITY USED AS A TEMPORARY SETTLING BASIN SHALL BE MODIFIED
WITH THE NECESSARY EROSION CONTROL MEASURES AND SHALL PROVIDE ADEQUATE STORAGE CAPACITY. IF THE
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PERMANENT FACILITY IS TO FUNCTION ULTIMATELY AS AN INFILTRATION OR DISPERSION SYSTEM, THE FACILITY
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SHALL NOT BE USED AS A TEMPORARY SETTLING BASIN. NO UNDERGROUND DETENTION TANKS OR VAULTS SHALL
BE USED AS A TEMPORARY SETTLING BASIN.
14- WHERE SEEDING FOR TEMPORARY EROSION CONTROL IS REQUIRED, FAST GERMINATING GRASSES SHALL BE
APPLIED AT AN APPROPRIATE RATE (I.E. ANNUAL OR PERENNIAL RYE APPLIED AT APPROXIMATELY 80 POUNDS PER
ACRE)-
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15. WHERE STRAW MULCH FOR TEMPORARY EROSION CONTROL IS REQUIRED, IT SHALL BE APPLIED AT A MINIMUM
THICKNESS OF TWO INCHES.
16. MANAGEMENT PRACTICES PROVIDING SIGNIFICANT TREE PROTECTION SHALL BE PROVIDED PER SECTION 19.120 OF
FWRC.
EROSIQNISEDIMENTATION CONTROL NOTES
CITY of
Federal Way
NOT REVIEWED BY CITY OF RENTON
EWATER UTILITY DEVELOPMENT ENGINEERING
Ak3pQUL GAFOUH 01/1312026 HSray 0111312026
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Tampa, P`lorida 33602
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C'err. of Auth. No. 603-536-314
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RICHARD HERNANDEZ, P.E.
WA REG. NO. 50841
Digitally signed by
Richard Hernandez
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SerialNumber--AAT
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240410344595,
cn—Richard Hemar
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Date- 2025.12-11
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W-438413