April 16, 2007 Also sent by e-mail
Mr. Ted McCall
McCall Oil and Chemical Corporation
5480 NW Front Avenue
Portland, Oregon 97210
RE: Stormwater Plan Approval
McCall Oil Site
ECSI No. 134
Dear Mr. McCall:
The Department of Environmental Quality (DEQ) reviewed your April 9, 2007 response to comments on the February 2, 2007 Stormwater and Catch Basin Sediment Sampling Plan (Plan) for the McCall Oil and Chemical Site. In the interest of collecting stormwater samples during this wet-weather season, the DEQ accepts your Plan as amended with your April 9, 2007 responses. The DEQ understands that you will implement the Plan this week, collecting stormwater samples in April and May, 2007. You are correct in assuming that the following evaluations should be done concurrently with stormwater and catch basin sampling: 1) potential groundwater impacts to the stormwater conveyance system, and 2) erodible bank soil migration to the Willamette River.
The lack of a timely response to the DEQ’s March 5, 2007 General Comment #2 concerning a site-wide stormwater drainage plan means that the adequacy of sampling points (particularly along Front Ave.) will be evaluated after implementation of the Plan. Although the DEQ has accepted your proposal to proceed in this manner, stormwater from areas of concern that are not included in the Plan may require sampling at a later date.
Please call me at (503) 229-5326 if you have questions.
Sincerely,
Tom Gainer, P.E.
Project Manager
Portland Harbor Section
cc: John Edwards, Anchor Environmental
Linda Scheffler, BES