Response Letter to 01-18-07 001February 22, 2007
Ciry of Yelm
Community Development Depaztment
105 Yelm Avenue West
P.O. Box 479
Yelm, WA 98597
Re: Crystal Springs PRD-OS-0770-YL
Nisha R. Box:
This letter is in response to your letter dated January 18, 2007, requesting additional
information.
Attached you will find an updated proposed stormwater plan. The Leaf Compost Filter
has been replaced with a Vortechs Model 2000 by Contech Srormwater Solutions, which
has received general approval by the Department of Ecology and is approved by the City
of Yelm's stomrwater manual.
Also attached is a revised Hydrogeologic Assessment prepared by GeoEngineers dated
February t9, 2007. This report addresses the vazying groundwater conditions as well as
soil moisture content that result from changing seasons.
The above listed items as well as a check for $900.00 for the binding site plan application
aze included with [his submittal.
Pete A. Swan
Petra Engineering, L.L.C.
535 Dock Street-Suite 213
Tacoma, WA 98402
Tel: (253) 752-7617
Fax: (253)761-8582
535 UOCKSI RIiP:f I SUI'fl'. 213 I'I 4COJIA I W.A I9A4021 NIIONI; (~~i)i S?-7( I' I FAX (253 p61-RSft2I www. PF;IRAE~G.K F'I'