“Best management practices” or “BMPs” means the schedule of activities, prohibition of practices, maintenance procedures, and structural, and/or management practices approved by Ecology that, when used singly or in combination, prevent or reduce the release of pollutants and other adverse impacts to waters of Washington State. BMPs are listed and described in the Gig Harbor stormwater management and site development manual, most recent version. (Ord. 1347 § 10, 2016).