RYAN SHORT PLAT (pln200500102).doc
RYAN SHORT PLAT
Stormwater Management
And Erosion Control
Review Notes
Plan #: PLN200500102
Erosion & Sedimentation Control Checklist
1. The existing ditch on the west side of the property needs to be more clearly identified in the
ESC plan.
2. The existing ditch also needs to have the flow direction clearly marked on the ESC plan.
3. On the City of Edmonds approved standard ESC details where it says,
“CONTRACTOR/DEVELOPER SHALL MAINTAIN, AND REPLACE” change to
“CONTRACTOR/DEVELOPER SHALL INSPECT, MAINTAIN, AND REPLACE”. Make that
change through out the plans where it is applicable.
4. In the ESC construction sequence there is no mention of the “Grading Activities”.
Stormwater Management Review Checklist
1. In section 2 of the report. It states, “No concentrated flows were observed entering the site.”
I would like a brief statement about the condition at the time the of the site visit(s). For
example “A field visit was done in January on a rainy day and no concentrated flows were
observed entering the site.”
2. Clarify the work site on the plan. I measured the site as 1.01 acres but the plans say it is 0.8
acres.
3. It was not clear how the time of concentration for the post development was obtained.
4. More information on sheet C3 the “SITE IMPROVEMENT” plan. The information required is
more pipe information like slope, size, and diameter. Catch basin information such as size,
types, and the invert elevations for all pipes.
5. The existing sanitary sewer and storm drain crossings near the pipe between CB #8 and CB
#9 is not shown on the profile view (Sheet C4).
6. Label the maximum water surface elevation for the detention facility either on the DRAINAGE
SYSTEM PROFILE or the FLOW CONTROL STRUCTURE/TYPICAL DETENTION TANK
SECTION detail.
7. Label the access that will be used for maintenance of the control structure for the private
system.
8. Need a detailed section and plan view of the of the control structure.
Jaime – Please add these review comments to your list. If you have any questions or need
anything clarified swing by and see me.