EPA ISSUED A NOTICE OF DETERMINATION ( NOD ) PURSUANT IS POLICY ON INCENTIVES FOR SELF-POLICING: DISCOVERY, DISCLOSURE, CORRECTION AND PREVENTION OF VIOLATIONS ( AUDIT POLICY ), 60 FR 66706 (APRIL 11, 2000). THE NOD WAS BASED ON SELF-DISCLOSURES PROVIDED BY THE MARYLAND STATE HIGHWAY ADMINISTRATION FREDERICK MAINTENANCE SHOP.