Home WA Government Publications Form 1 - Report of a known or suspected contaminated site Form 1 - Report of a known or suspected contaminated site Form To report a known or suspected contaminated site under section 11 of the Contaminated Sites Act 2003. Last updated: 16 June 2023 Please download the form below. Documents Form 1 - Report of a known or suspected contaminated site (PDF, 272.57KB) Sidebar Published 16 January 2020 Provided by Department of Water and Environmental Regulation Document collections Contaminated sites forms Share Facebook share(Opens in a new tab/window) Twitter(Opens in a new tab/window) LinkedIn(Opens in a new tab/window) Copy URL