Washington Department of Ecology approved the Yakima County Regional Stormwater Manual in February 2010. Applicants in Yakima County and the cities of Yakima, Union Gap, and Sunnyside may use either manual for stormwater facility design in these jurisdictions. The Yakima County Regional Stormwater Manual provides complete guidance for stormwater drainage and treatment designs appropriate to Yakima County soils and climate.
|Documents & Meetings|
|Ecology Public Notice and Equicalency Acceptance|