Justification for Class III Permit Modification April 2000 ER Site 42 Building 870 Water Treatment Facility Operable Unit 1302

This technical document contains the Justification for the Class III Permit Modification request for Site 42. Contained within this document is the history of the site, descriptions of any investigations and/or remediation completed at the site, the regulatory background, and the rationale for the proposed future land-use of this site