Do you need more of a head start? Try customizing one of the complete apps to fit your needs.
My Right to KnowMyRTK is an EPA Web application designed for mobile devices. MyRTK maps, for any location or address, nearby facilities that report to the Toxics Release Inventory (TRI), as well as large permit holders in EPA's Air, Water or Hazardous Waste programs that are expected to produce, manage, or release TRI-reportable chemicals. MyRTK is also compatible with most Web-enabled mobile phone browsers and most desktop browsers.