This legislation aims to protect and promote the environmental heritage of New South Wales. It establishes a framework for identifying, registering, and conserving significant heritage items, including historic shipwrecks and relics. The framework includes provisions for interim protection, control over activities affecting heritage sites, and financial assistance for conservation efforts. It creates a dedicated council to manage heritage listings, enforce maintenance standards, and provide approvals for modifications. The legislation also ensures government bodies manage their heritage assets responsibly, facilitates relic discovery and protection, and outlines compliance requirements for individuals and organizations involved in activities impacting heritage. Its core purpose is to foster understanding and encourage the long-term preservation of the state's heritage.