Re: GBlist: Parking lot run-off

Bruce Sullivan (
Mon, 17 Mar 97 13:44:07 -0700


Several projects in the Portland, Ore. area guide parking lot runoff to
shallow basins or swales in medians and around the perimeter of the lot.
There its allowed to percolate into the soil. Wetlands plants and the
soil appear to be left with the task of "processing" the waste. I always
wondered how the plants tolerated the oil and chemicals from cars; and
whether long-term contamination would occur. Perhaps others can shed some
light on this?

Bruce S

>Has anyone had experience treating parking lot run-off? I have a project
>there is parking adjacent to a river and I have an opportunity to perhaps
>improve what is going into the river from the parking lot.

Bruce Sullivan Tel: 541-484-9353
Iris Communications, Inc. Fax: 541-484-1645
Web: E-mail:
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