pln20150050-Bracketts Corner-ADB-E2.pdfDate:
To:
From:
Subject:
MEMORANDUM
December 21, 2015
Sean Conrad, Associate Planner
Jeanie McConnell, Engineering Program Manager
PLN20150050 — Design Review
Brackett's Corner — 8000 — 212'h St SW
The comments provided below are based upon review of the application and documents
submitted for design review for Brackett's Corner at 8000 — 212' St SW. Additional
information is requested from the applicant at this time. Please ask the applicant to respond to
the following.
1. Completed
2. Completed
3. 12121115 Please revise and resubmit geotech report and plans per the comments
below. The June 15, 2015 geotech report prepared by Liu & Associates includes a Site
and Exploration Location Plan that identifies test pit locations. One of the test pit
locations aligns with a proposed infiltration gallery, but the other two do not. Please
conduct additional soils testing in the location of the proposed infiltration galleries to
confirm that the proposal is feasible.
• The geotech used a method from the 2012 Ecology manual that we do not currently recognize
for assessment of infiltration rates. Methods in the 2005 Ecology manual must be used. Since
this site will be over an acre, the pilot infiltration test (PIT) described in the 2005 manual
should be used. Tests must be conducted at the locations of the proposed infiltration BMPs.
• Since the site is over an acre, LID BMPs cannot be designed using the E72B handout. They
must be modeled and designed by an Engineer.
• Due to the density of the development, stormwater BMPs may need to be located under the
driveways.
• A full stormwater report describing how the site meets all the applicable minimum
requirements will be required.
Thank you.
City of Edmonds