13-102624AEROSION CONTROL NOTES
1. APPROVAL OF THIS EROSION/SEDI MEN TAT] ON CONTROL (ESC) PLAN DOES NOT CONSTITUTE AN APPROVAL OF PERMANENT ROAD OR
DRAINAGE DESIGN (I.E. SIZE AND LOCATION OF ROADS, PIPES, RESTRICTORS, CHANNELS, RETENTION FACILITIES, UTILITIES, ETC.).
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.
3. THE BOUNDARIES OF THE CLEARING LIMITS SHOWN ON THIS PLAN SHALL BE CLEARLY FLAGGED IN THE FIELD PRIOR TO CONSTRUCTION.
DURING THE CONSTRUCTION PERIOD, NO DISTURBANCE BEYOND THE FLAGGED CLEARING LIMITS SHALL BE PERMITTED. THE FLAGGING
SHALL BE MAINTAINED BY THE APPLICANT/CONTRACTOR FOR THE DURATION OF CONSTRUCTION.
4. 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 TO ENSURE THAT ALL PAVED AREAS ARE KEPT CLEAN
AND TRACKING IN THE ROADWAY DOES NOT OCCUR FOR THE DURATION OF THE PROJECT.
5. THE ESC FACILITIES SHOWN ON THIS PLAN MUST BE CONSTRUCTED PRIOR TO OR 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, ADJACENT
PROPERTIES, OR VIOLATE APPLICABLE WATER STANDARDS.
6. 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 AND/OR REVISED AS NEEDED FOR UNEXPECTED STORM EVENTS,
AND MODIFIED TO ACCOUNT FOR CHANGING SITE CONDITIONS (E.G. ADDITIONAL COVER MEASURES, RELOCATION OF DITCHES AND SILT
FENCES, PERIMETER PROTECTION, ETC.).
7. THE ESC FACILITIES SHALL BE INSPECTED DAILY BY THE APPLICANT/CONTRACTOR AND MAINTAINED AS NECESSARY TO ENSURE THEIR
CONTINUED PROPER FUNCTIONING.
8. ANY AREAS OF EXPOSED SOILS, INCLUDING ROADWAY EMBANKMENTS, THAT WILL NOT BE DISTURBED FOR SEVEN (7) DAYS DURING THE
DRY SEASON OR TWO (2) DAYS DURING THE WET SEASON, SHALL BE IMMEDIATELY STABILIZED WITH THE APPROVED ESC METHODS (I.E.
SEEDING, MULCHING, NETTING, EROSION BLANKETS, ETC.).
9. ANY AREA NEEDING ESC MEASURES, NOT REQUIRING IMMEDIATE ATTENTION, SHALL BE ADDRESSED WITHIN SEVEN (7) DAYS.
10. THE ESC FACILITIES ON INACTIVE SITES SHALL BE INSPECTED AND MAINTAINED A MINIMUM OF ONCE A MONTH OR WITHIN 24 HOURS
FOLLOWING A STORM EVENT.
11. AT NO TIME SHALL MORE THAN ONE (1) 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.
12. ANY PERMANENT RETENTION/DETENTION FACILITY USED AS A TEMPORARY SETTLING BASIN SHALL BE MODIFIED WITH THE NECESSARY
EROSION CONTROL MEASURES AND SHALL PROVIDE ADEQUATE STORAGE CAPACITY. IF THE PERMANENT FACILITY IS TO FUNCTION
ULTIMATELY AS AN INFILTRATION SYSTEM, THE FACILITY SHALL NOT BE USED AS A TEMPORARY SETTLING BASIN. NO UNDERGROUND
DETENTION TANKS OR VAULTS SHALL BE USED AS A TEMPORARY SETTLING BASIN.
13. COVER MEASURES WILL BE APPLIED IN CONFORMANCE WITH APPENDIX D OF THE KCSWDM.
14. MANAGEMENT PRACTICES PROVIDING SIGNIFICANT TREE PROTECTION (PER FWRC) SHALL BE PROVIDED ON THE ESC PLANS.
15. WET SEASON SPECIAL PROVISIONS, AS DESCRIBED IN SECTION D.5.2 OF APPENDIX D, KCSWDM ARE IN EFFECT OCTOBER 1 THROUGH
APRIL 30. PRIOR TO THE BEGINNING OF THE WET SEASON, ALL DISTURBED AREAS SHALL BE REVIEWED TO IDENTIFY WHICH ONES CAN
BE SEEDED IN PREPARATION FOR WINTER RAINS. DISTURBED AREAS SHALL BE SEEDED WITHIN ONE WEEK OF THE BEGINNING OF THE
WET SEASON.
SOIL TEST PITS
TEST PIT TP-1 LOCATION: AT WEST END OF PROPOSED STORM WATER VAULT
DEPTH(FT) SOIL
TYPE
SOIL DESCRIPTION
0.0
- 1.0
SOD / TOPSOIL
1.0 -
3.5
SM
BROWN/ORANGE SILTY SAND WITH OCCASIONAL GRAVEL, MEDIUM DENSE, MOIST (W. TILL)
3.5
4.8
- 4.8
- 12.0
SM
SM
GRAY SILTY SAND WITH GRAVEL, COBBLES, MOTTLING, MEDIUM DENSE, MOIST. (W. TILL)
GRAY SILTY SAND WITH GRAVEL, COBBLES, DENSE TO VERY DENSE, MOIST. (GLACIAL TILL)
TEST PIT TERMINATED AT 12.0 FEET BELOW THE GROUND SURFACE.
NO CAVING OBSERVED.
ISOLATED MINOR GROUNDWATER SEEPAGE OBSERVED AT 4.3-4.8
FEET BELOW THE GROUND SURFACE.
TEST PIT TP-2 LOCATION: SOUTH END OF PARCEL JUST EAST OF CENTER
DEPTH(FT) SOIL TYPE SOIL DESCRIPTION
0.0 - 1.3 FOREST DUFF
1.3 - 4.0 SM BROWN/ORANGE SILTY SAND WITH OCCASIONAL GRAVEL, MEDIUM DENSE, MOIST. (W. TILL)
4.0 - 5.0 SM GRAY SILTY SAND WITH GRAVEL, COBBLES, MOTTLING, MEDIUM DENSE, MOIST. (W. TILL)
5.0 - 6.5 SM GRAY SILTY SAND WITH GRAVEL, COBBLES, DENSE TO VERY DENSE, MOIST. (W. TILL)
TEST PIT TERMINATED AT 6.5 FEET BELOW THE GROUND SURFACE.
NO CAVING OBSERVED.
PREPARED BY. MINOR GROUNDWATER SEEPAGE OBSERVED AT 3.5 TO 3.8 FEET
GEORESOURCES, LLC BELOW THE GROUND SURFACE.
5007 PACIFIC HIGHWAY EAST, SUITE 16
FIFE, WA. 98424
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DATUM ELEV
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A PORTION OF SW 1/4 OF SEC. 16, TWP. 21N, RGE. 4E
WILLAMETTE MERIDIAN, KING COUNTY, WASHINGTON W
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DATUM ELEV
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INFILTRATION AREA - FLAG AND //
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HYDROSEED OR STRAW
DISTURBED AREA IMMEDIATELY
AFTER GRADING.
APPROXIMATE LOCATION OF 18
- 6" TO 12" COTTONWOOD
TREES
DRIVEWAY TO REMAIN OPEN FOR
/ HOME TO THE SOUTH DURING
CONSTRUCTION. CONTRACTOR TO
COORDINATF WITH HnMF nwNFR
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WSDOT RIGHT OF WAY NOTES:
1. AC PAVEMENT AND FENCE ASSOCIATED WITH THE EXISTING
PRIVATE DRIVE AND LOCATED WITHIN THE STA TE'S
RIGHT-OF-WAY FOR INTERSTATE 5 (1-5) MAY BE REMOVED
ONLY WITH PRIOR APPROVAL OF THE WASHINGTON STATE
DEPARTMENT OF TRANSPORTATION (WSDOT). NO WORK SHALL
OCCUR WITHIN THE 1-5 RIGHT-OF-WAY WITHOUT THE APPROVAL
OF WSDOT.
2. ALL WORK SHOWN ON THIS PLAN OR OTHERWISE NECESSARY TO
COMPLETE WORK WITHIN WSDOT (INTERSTATE 5) RIGHT-OF-WAY
SHALL REQUIRE COORDINA77ON AND APPROVAL BY WSDOT
UNDER SEPARATE PERMIT. OWNER OR CONTRACTOR SHALL
SECURE ANY NECESSARY WSDOT PERMITS PRIOR TO WORK
WITHIN THE INTERSTATE 5 RIGHT-OF-WAY.
3. COPIES OF ANY WSDOT PERMITS OR APPROVALS SHALL BE
PROVIDED TO THE CITY PRIOR TO WORK WITHIN WSDOT
RIGHT-OF-WAY.
CALL 48 HOURS
BEFORE YOU DIG
DIAL 811
PERMIT NO. 13-103176-00-EN
RESUBMI-7.
APPROVED OCT 11 2013
DATE CITY 77_7 .
A
IA