THIS IS A PRN FOR RD/RA FOR LINDANE DUMP SITE, NATRONA, HARRISON TOWNSHIP, PA. CONTAMINANTS OF CONCERN ARE GAMMA- BHC (LINDANE), BENZENE CHLOROBENZENE AND DICHLOROBENZENE. SITE PLACED ON NPL ON 9/8/83. THE UPPER SITE AREA IS A RE- CREATIONAL AREA, OWNED BY HARRISON TOWNSHIP. THE LOWER AREA IS OWNED BY ALLEGHENY LUDLUM CORPORATION. ELF ATOCHEM NORTH AMERICA, INC. IS A PRIOR OWNER AND OPERATOR. SUPPLEMENTAL REFERRAL ADDING ALLEGHENY TO THE LINDANE DUMP SITE (PRN), 7/5/96.