Contaminants in Stormwater Discharge, and Associated Sediments, at Perth’s Marine Beaches Document Size: 6212788 bytes Publish Date: 24-APR-2007 10:25 AM This Department of Water document contains baseline data for microbial quality, heavy metals, nutrients, petroleum hydrocarbons, organic chemical compounds and suspended solids in nine Perth coastal regions to aid local government in managing stormwater. It also contains a preliminary study of the impacts of stormwater contaminants on near-shore coastal environments.