SR99 - 23329_bld20080770_Tate Grading3.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
Engineering Plan Review Comments
Application :Date:
# BLD2008770 October 22, 2008
Project Name/Address:
Tate Grading / 23329 SR 99
Contact Person/Address, Fax or E-mail:
Patrick Hammer / NCQ Construction LLC / Fax 360.279.9387
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.
The engineering plan review comments of October 8, 2008 and October 1, 2008 (reproduced below) have
not been addressed. The installed geomat, Geotex 200ST, manufactured by Propex Geosynthetics, is
engineered for under-pavement systems, enhancing subgrade performance by stabilizing, strengthening, and
specifically
consolidating soil, and is designed to prevent subsurface saturation. It is *not* designed for
drainage purposes. This geomat shall not remain installed onsite without an approved and implemented
drainage system to handle the increased runoff.
The engineering plan review comments of October 1, 2008 are reproduced and boxed below. The
submitted landscape plan of October 3, 2008 that deletes the proposed parking lot does not take into
consideration the requirement for either the removal of the installed geomat or the required drainage
plan should the mat be intended to remain. It is possible that you intended for the landscape plan to
address exclusively the Planning Department’s concerns, with civil drawings and plans to be
submitted at a later date. If this was your intention, please inform the Permit Coordinator who
receives your subsequent submittals of the extent of the reviews requested at the time of submittal.
It has come to our attention that the placed gravel is underlain by geomat,
rather than ordinary non-woven landscape fabric. A site visit confirmed this.
Geomat is a 100% impervious barrier fabric; as such, the entire site is now
considered as impervious surface.
A drainage plan is now required to handle the runoff from the site. Because of
the site’s size, this plan must be designed by a licensed engineer. An alternative
option is to remove the geomat from the site.
DATE E-MAILED 10/22/2008 PAGE(s)
1 of 1