HomeMy WebLinkAboutEnvironmental Impact Checklist Comments - GRD Letters / Memos - 11/23/1993 C Phone 427-9670 Ext. 450 Jerry W. Hauth, PE, PLS
MArea Code (206) Director
A
S V DEPARTMENT OF PUBLIC WORKS
ON COURTHOUSE ANNEX II 411 NORTH 5TH STREET
TP.O. BOX 369 SHELTON, WASHINGTON 98584
Y November 23, 1993
Gary Yando
Director of Community Development
426 West Cedar
P.O. Box 578
Shelton, Washington 98584
(206) 427 9670
Re: Environmental Impact Checklist comments concerning the Ace Paving Co.
Commercial Site in Belfair Washington
Mason County Public Works Engineering review of the Environmental Impact
Checklist for the above referenced facility raises the following concerns;
(1) On page 3 of the EIC item B-1(e) the proponent declares that
approximately 8000 cy will be balanced on site. Analysis of the cross
sections provided by MAP LTD (Mark Eisses, P.E.) indicate that.
approximately 16,000 cy of fill and 72,000 cy of excavation will be
required to achieve the proposed topography.
(2) On page 3 of the EIC item B-1(f) the proponent declares that erosion
could occur as a result of clearing, construction or use. The proponent
continues and states that "an erosion control plan has been proposed which
includes silt ponds, etc." The property in it's current existing condition
is nearly entirely denuded of vegetation and discharges unmitigated
stormwater into state and county conveyances. The result has been
increased ditch flows and overtopping of conveyances in some locations. A
permanent stormwater plan should be prepared and incorporated into the
proposed grading plan that addresses water quantity as well as water
quality. A plan meeting Puget Sound Water Quality Authority Downstream
Erosion Control Standards would help alleviate the stormwater impact this
site is imposing on downstream receiving properties. Under Puget Sound
Water Quality Authority Downstream Erosion Control Standards, the proponent
would be required to reduce the developed property's 2 yr 24 hour
stormwater release to half the runoff generated by the site in a forested
condition and the proponent would be allowed to match the pre-development
runoffs for the 10 through 100 year 24 hour events based on forested lands.
Until these concerns are satisfactorily addressed, Engineering recommends
disapproval of this proposal .
Si erely,
ALAH A. TAHJA
Office Technician
File: H:\WP\LETTERS\BEL-ACE.EIC