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EROSION CONTROL NOTES
d7 1. THESE NOTES SHALL APPEAR FOR PROJECTS - SITE IMPROVEMENTS, SURFACE
r WATER UTILITY, WASTEWATER UTILITY, WATER UTILITY, AND TRANSPORTATION PLANS:
O C'7 2. BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS, A
OI PRE -CONSTRUCTION MEETING MUST BE HELD WITH THE CITY OF RENTON,
0 PUBLIC WORKS DESIGN ENGINEER.
0 3. THE BOUNDARIES OF THE CLEARING LIMITS AND AREAS OF VEGETATION PRESERVATION
W AS PRESCRIBED ON THE PLAN(S) SHALL BE CLEARLY FLAGGED BY SURVEY TAPE OR FENCING
IN THE FIELD PRIOR TO CONSTRUCTION IN ACCORDANCE WITH APPENDIX "D" OF THE SURFACE
WATER DESIGN MANUAL AND OBSERVED DURING CONSTRUCTION. DURING THE CONSTRUCTION
PERIOD, NO DISTURBANCE BEYOND THE CLEARING LIMTS SHALL BE PERMITTED. THE CLEARING
LIMITS SHALL BE MAINTAINED BY THE APPLICANT/ESC SUPERVISOR FOR THE DURATION OF CONSTRUCTI
4. STABILIZED CONSTRUCTION ENTRANCES SHALL BE INSTALLED AT THE BEGINING OF CONSTRUCTION
AND MAINTAINED FOR THE DURATION OF THE PROJECT. ADDITIONAL MEASURES, SUCH AS
CONSTRUCTED WHEEL WASH SYSTEMS OR WASH PADS, MAY BE REQUIRED TO ENSURE THAT ALL
PAVED AREAS ARE KEPT CLEAN AND TRACK OUT TO ROAD RIGHT OF WAY DOES NOT OCCUR
FOR THE DURATION OF THE PROJECT.
Q 5. ALL REQUIRED SEDIMENTATION/EROSION CONTROL FACILITIES MUST BE CONSTRUCTED AND IN
J OPERATION PRIOR TO LAND CLEARING AND/OR CONSTRUCTION TO PREVENT TRANSPORTATION OF
0- SEDIMENT TO SURFACE WATER, DRAINAGE SYSTEMS AND ADJACENT PROPERTIES. ALL EROSION
AND SEDIMENT FACILITIES SHALL BE MAINTAINED IN A SATISFACTORY CONDITION UNTIL SUCH TIME
r THAT CLEARING AND/OR CONSTRUCTION IS COMPLETE AND POTENTIAL FOR ON -SITE EROSION HAS
z PASSED. THE IMPLEMENTATION, MAINTENANCE, REPLACEMENT AND ADDITIONS TO EROSION/
O SEDIMENTATION CONTROL SYSTEMS SHALL BE THE RESPONSIBILITY OF THE PERMITTEE.
0 6. THE EROSION AND SEDIMENTATION CONTROL SYSTEMS DEPICTED ON THIS DRAWING ARE
z INTENDED TO BE MINIMUM REQUIREMENTS TO MEET ANTICIPATED SITE CONDITIONS. AS
W CONSTRUCTION PROGRESSES AND UNEXPECTED OR SEASONAL CONITIONS DICTATE, THE PERMITEE
� SHALL ANTICIPATE THAT MORE EROSION AND SEDIMENTATION CONTROL FACILITIES WILL BE
NECESSARY TO INSURE COMPLETE SILTATION CONTROL ON THE PROPSED 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 RECIEVING DRAINAGE SYSTEM.
7. 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.
8. ANY AREAS OF EXPOSED SOILS, INCLUDING ROADWAY EMBANKMENTS, THAT WILL NOT BE
DISTURBED FOR TWO DAYS DURING THE WET SEASON (OCTOBER 1ST - MARCH 30TH) OR
SEVEN DAYS DURING THE DRY SEASON (APRIL 1ST - SEPTEMBER 30TH) SHALL BE
O IMMEDIATELY STABILIZED WITH THE APPROVED EROSION COVER METHODS (e.g. SEEDING,
MULCHING, PLASTIC COVERING, ETC.).
W
~ 9. WET SEASON SEASONAL EROSION AND SEDIMENT CONTROL REQUIREMENTS APPLY TO ALL
LJJ CONSTRUCTION SITES CLEARING BEWTEEN OCTOBER 1 AND MARCH 30 INCLUSIVE, UNLESS
= OTHERWISE APPROVED BY THE CITY THROUGH AN ADJUSTMENT PROCESS.
10. COVER MEASURES WILL BE APPLIED IN CONFORMANCE WITH APPENDIX I'D" OF THE SURFACE
WATER DESIGN MANUAL.
11. ANY AREA NEEDING ERC MEASURES, NOT REQUIRING IMMEDIATE ATTENTION, SHALL BE
ADDRESSED WITHIN SEVEN (7) DAYS.
12. THE ERC FACILITIES ON INACTIVE SITES SHALL BE INSPECTED AND MAINTAINED A MINIMUM OF
ONCE A MONTH OR WITHIN 24 HOURS FOLLOWING A STORM EVENT.
13. 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.
14. DURING THE TIME PERIOD OF OCTOBER 1ST - MARCH 30TH, ALL PROJECT DISTURBED SOIL AREAS,
THAT ARE TO BE LEFT UN -WORKED FOR MORE THAN 12 HOURS, SHALL BE COVERED
BY MULCH, SODDING, OR PLASTIC COVERING.
15. 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 TEMPORARY FACILITY MUST BE ROUGH GRADED SO THAT THE BOTTOM AND SIDES
ARE AT LEAST THREE FEET ABOVE THE FINAL GRADE OF THE PERMANENT FACILITY.
16. PRIOR TO THE BEGINNING OF THE WET SEASON (OCT. 1), ALL DISTURBED AREAS SHALL BE
REVIEWED TO IDENTIFY WHICH ONES CAN BE SEEDED IN PREPARATION FOR THE WINTER RAINS.
DISTURBED AREAS SHALL BE SEEDED WITHIN ONE WEEK OF THE BEGINNING OF THE WET SEASON.
A SKETCH MAP OF THOSE AREAS TO BE SEEDED AND THOSE AREAS TO REMAIN UNCOVERED
SHALL BE SUBMITTED TO THE CITY OF RENTON FOR REVIEW.
EROSION AND SEDIMENT CONTROL RECOMMENDED CONSTRUCTION
SEQUENCE
1. Pre -construction meeting.
2. Post sign with name and phone number of ESC supervisor (may be consolidated with
the required notice of construction sign).
3. Flag or fence clearing limits.
4. Install catch basin protection if required.
5. Grade and install construction entrance(s).
6. Install perimeter protection (silt fence, brush barrier, etc.).
7. Construct sediment ponds and traps.
8. Grade and stabilize construction roads.
9. Construct surface water controls (interceptor dikes, pipe slope drains, etc.)
simultaneously with clearing and grading for project development.
10. Maintain erosion control measures in accordance with Appendix D of the Surface
Water Design Manual and manufacturer's recommendations.
11. Relocate erosion control measures or install new measures so that as site conditions
change the erosion and sediment control is always in accordance with the City'
Erosion and Sediment Control Standards.
12. Cover all areas that will be unworked for more than seven days during the dry
season or two days during the wet season with straw, wood fiber mulch, compost,
plastic sheeting or equivalent.
13. Stabilize all areas that reach final grade within seven days.
14. Seed or sod any areas to remain unworked for more than 30 days.
15. Upon completion of the project, all disturbed areas must be stabilized and BMPs
removed if appropriate.
OFFE ENGINEERS
13932 SOUTHEAST 159TH PLACE
RENTON, WASHINGTON 98058
PHONE: 425-260-3412
CONTACT: DARRELL OFFE, P.E.
POND SIZING: SURFACE AREA REQUIRED @ 506.0= 2080 SQ. FEET
TOP OF PRINCIPAL OVERFLOW=506.0 SURFACE AREA PROVIDED ® 506.0= 2108 SQ. FEET
BOTTOM OF EMERGENCY SPILLWAY=507.0
EMERGENCY SPILLWAY WIDTH @507.0 = 6'
TOP OF BERM=508.0
BOTTOM OF POND=502.5
SURFACE AREA @506.0 - WIDTH=25' X LENGTH=75'
RISER=8" DIAMETER 1 II 1
II CLEARING LIMITS & PROPERTY �x'x ,S
LINE, AS BOUDNARY (TYPICAL) I 1 .° s°s �R
INSTALL SEDIMENT POND i I I �^ m m m
ON. PER DETAIL 216.00 i I TREES TO BE RETAINED Oil A
o INSTALL TREE PROTECTION '. �;- - - - - - - - - - -
FENCING PER CITY DETAIL � s ssfW
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02/13/2018 N0.
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INSTALL 12" GRASSED "V" SWALE
W/3:1 SIDE SLOPES PER
DETAIL SHEET 5
S2 M /�O`V 6c.9 .�Ii•6 a..O�.
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NOTES:
O REMOVE EXISTING FEATURES
O CONTRACTOR TO COORDINATE WITH
FRANCHISE UTILITIES FOR SERVICE
DISCONNECT
O ABANDON EXISTING SERVICES;
CONTRACTOR TO COORDINATE WITH
KC WATER DISTRICT#90
O EXISTING STUCTURES TO BE
REMOVED UNDER A SEPERATE
CITY OF RENTON DEMO PERMIT
O EXISTING HOUSE TO REMAIN HAS
A SEPTIC TANK AND DRAINFIELD;
THESE FEATURES TO BE DEMO'D AND/OR
REMOVED PER KC HEALTH DEPT. STANDARDS
SURVEYED:
TERRANE SURVEYING
SCALE:
VERTICAL: NAVD 1988
HORIZONTAL: NAD 1983/1991
CITY OF
VR RENTON
REVISED PER CITY COMMENTS
DLO
2/2018
DESIGNED:
D.L. OFFE, P.E.
REVISED PER CITY COMMENTS
DLO
1/2018
DRAWN:
REVISED
PER
CITY COMMENTS
DLO
9/2017
D.L. OFFE, P.E.
ONE INCH
DATUM
Planning/Building/Public Works Dept.
REVISED PER CITY COMMENTS
DLO
2/2017
CHECKED:
AT FULL SCALE
IF NOT ONE INCH
REVISION
BY
DATE
AP P R
SCALE ACCORDINGLY
APPROVED:
GRAPHIC SCALE
0 20 40 80
1 inch = 40 feet
R-391906
IN COMPLIANCE WITH CITY OF RENTON STANDARDS
RENTON 14 PLAT
KENDALL HOMES, INC.
TEMPORARY EROSION CONTROL PLAN
6201 NE 4th STREET
W
a
J
n
DATE:
02/13/2018 Tf
FIELDBOOK: L
PAGE: O
DRAWING NO:
SHEET:OF: W
6 28
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