Declaration of Edward O’Brien

Notes

Declaration by Edward O’Brien, a Washington Department of Ecology employee with over 20 years of experience in water quality and stormwater management. The declaration addresses stormwater management manuals used in Washington state, including the 1992 Ecology manual and the 1998 King County Surface Water Design Manual. It explains how development and impervious surfaces alter the natural hydrologic cycle, increasing pollutant runoff and peak flows while reducing groundwater recharge and summer base flows.

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