162 St City Park_BLD20080182_2.pdf
City of Edmonds
TH
121 5 AVENUE NORTH EDMONDS, WA 98020 • (425) 771-0220 FAX(425) 771-0221
Website: www.ci.edmonds.wa.us
PUBLIC WORKS DEPARTMENT
Engineering Division
Civil Plan Review Comments
Application #: BLD20080182 Date: August 27, 2008
Project Name/Address: 162 Street City Park / Intx of 75 Ave W and 162 St SW
Contact Person/Address, Fax or E-mail: Jaime Hawkins / Hawkins@ci.edmonds.wa.us
Reviewer: Edward Sibrel Division:Engineering
During review of the civil drawings for the proposed subdivision it was found that the following
information, corrections, or clarifications will need to be addressed. Please resubmit 3 copies of the
revised civil drawings and associated documents with a written response to each item to an Engineering
Technician. Please contact me at 425-771-0220 or by e-mail at sibrel@ci.edmonds.wa.us if you have
specific questions regarding these plan corrections.
May 29 ReviewAugust 27 Review
1.Grading. Unable to locate any grading / cut / fill calculations or quantities for the project.
This item has not been addressed.
2.TESC
• Show how / where onsite water will be retained for sediment removal prior to discharge.
This item has not been addressed.
• Show how offsite water is to be intercepted and routed around site during construction.
This item has not been addressed.
• Show a method for dealing with groundwater, should it be encountered during construction.
This item has not been addressed.
• Because of its proximity to water bodies and its location within the Earth Subsidence and Landslide
Hazard Area (ESLHA), it’s recommended a Certified Erosion & Sediment Control Lead (CESCL)
monitor the TESC during construction.
No notes to this effect appear on the plan set
• Per ECDC 19.10.040(C), a statement is required from the engineer who prepared the geotechnical report
addressing the adequacy of the civil plans and TESC in meeting the recommendations of the report.
This item has not been addressed.
• Include the appropriate Edmonds Standard Details with the plan set.
This item has not been addressed.
3.Drainage.
DATE E-MAILED 8/27/08 PAGE(s) 1 of 2
City of Edmonds
TH
121 5 AVENUE NORTH EDMONDS, WA 98020 • (425) 771-0220 FAX(425) 771-0221
Website: www.ci.edmonds.wa.us
PUBLIC WORKS DEPARTMENT
Engineering Division
Civil Plan Review Comments
•~~Done ECDC 19.10.030(F)(1) requires the drainage be designed by a licensed engineer, and that design
must be accompanied with the submittal of calculations that show the design does indeed limit the peak rate
of runoff to the predeveloped condition two-year, 24-hour design storm, while maintaining the predeveloped
condition peak runoff rate for the 10-year, 24-hour and 100-year, 24-hour storms.
The City understands that collected stormwater will be directly discharged to Puget Sound.
4.Peer Review. Address the points raised by the peer review of the geotech report:
Please refer to the second Landau peer review report dated August 13, 2008
•~~Done The possible increase in slope instability caused by the fill behind the retaining wall;
•~~Done The consistency between the geotech report and the plans regarding the method for supporting
the retaining wall;
•~~Done The lack of geogrid reinforcement behind the retaining wall;
•~~Done Showing how and where the retaining wall drains;
•~~Done Addressing the shoring / stability issues relating to excavating the 10’ trench for the slope
drain;
• The lack of invert information on the slope drain;
This item has not been addressed. Per the Landau review, ”Confirm that the slope drain is at an
appropriate location and depth consistent with the geotechnical report recommendations, and provide
invert elevation on the plans.”
• No construction details were included for the slope drain itself.
This item has not been addressed.
•New Item: The requirements for City building Inspections and Special Inspections by the Geotechnical
Engineer of Record should be included on the design plans.
•New Item: Landau notes the code prohibition against improvements that introduce water into the
ground within the ESLHA include watering or irrigation systems. Please update plans to reflect this
requirement.
DATE E-MAILED 8/27/08 PAGE(s) 2 of 2