The NPL is the list of national priorities among the known releases or threatened releases of hazardous substances, pollutants, or contaminants throughout the United States and its territories. The NPL is intended primarily to guide the EPA in determining which sites warrant further investigation.
Sites on the NPL are required to appoint a remedial project manager and onscene coordinator.
Federal facilities on the NPL are required to have an IAG with the USEPA containing the following:
a review of alternative remedial actions and selection of a remedial action by the head of the relevant department, agency, or instrumentality and the administrator or, if unable to reach agreement on selection of a remedial action, selection of the administrator
a schedule for the completion of the remedial action
arrangements for long term operation and maintenance of the facility.
Summary of State Requirements
The states primarily regulate this type of a source through their permit programs or their stormwater programs.