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CIVIL ENGINEERING - PROJECT MGT - ADV. HYDRAULICS
8957 DISTRICT UNE RD PH (360) 661 -6656
CONAL BURUIGTON, WA 98233
NO. REVISION BY
R 5E., W.M.
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CLEARING LIMITS
FRONTAGE
IMPROVEMENTS
A 04 CLEARING LIMITS
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Erosion Control Notes
1. These notes shall appear for all projects — site improvements, surface water utility,
wastewater utility, water utility, and transportation plans:
2. Before any construction or development activity occurs, a pre— construction meeting
must be held with the City of Renton, public works design engineer.
3. The Boundaries of the clearing limits and areas of veggtation preservation 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 limits shall be permitted. The clearing limits shall be
maintained by the applicant /ESC supervisor for the duration of construction.
4. Stabilized construction entrances shall be installed at the beginning 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.
5. All required sedimentation /erosion control facilities must be constructed and in
operation prior to land clearing and /or construction to prevent transportation of
sediment to surface water, drainage systems and adjacent properties. 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.
6. 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.
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 trough March 30th) or
seven days during the dry season (April 1st tough September 30) shall be
immediately stabilized with the approved ESC cover methods (e.g., seeding,
mulching, plastic covering, etc.).
9. Wet season seasonal erosion and sediment control requirements apply to all
construction sites clearing between 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 D of the Surface
Water Design Manual.
11. Any area needing ESC measures, not requiring immediate attention, shall be
addressed within seven (7) days.
12. 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.
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 through March 30th, all project distributed
soil areas greater, 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.
17. Provide approved dust control measures.
18. Provide vehicle wheel wash area at the discretion of the TESC supervisor.
19. Erosion Control measures shall be updated in the field as necessary.
(NOTE: EROSION CONTROL MEASURES SHALL BE SUBJECT TO FIELD MODIFICATION BY
THE CITY INSPECTOR AS NEEDED. )
368719
CITY OF RE ON
Approved by: I / ;.
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Approved by:
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NOTE:
IX. UTILITIES ARE APPROXIMATE ONLY CALL
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