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1 11 11 0 11 PREFACE Part 1 of this document presents the Solid Waste Assessment Test (SWAT) proposal for the Corral Hollow Sanitary Landfill located in San Joaquin County, California. Implementation of a SWAT program by all landfill owners is required by the Calderon Bill (AB 3525), which was incorporated into the California Water Code (Section 13273) in 1984. The program's purpose is to determine if hazardous waste constituents have migrated from landfill sites in California. In order to provide reliable information on possible hazardous waste migration, the program requires an analysis of surface and ground water immediately outside of or under each landfill site. Because the Corral Hollow Sanitary Landfill is a Rank 2 site, the County of San Joaquin Depart- ment of Public Works must submit a SWAT report to the Regional Water Quality Control Board (RWQCB) by July 1, 1988. The SWAT guidance documents prepared by the State Water Resources Control Board (SWRCB) in March, July, and October 1986 suggest prepa- ration and submittal of a SWAT proposal to the RWQCB for approval prior to commencing the SWAT investigation. This SWAT proposal closely follows the format suggested in the guidance documents. Findings from the RWQCB-approved SWAT investigation will be presented in the SWAT report. The SWAT proposal and ground -water monitoring plan for the Corral Hollow Sanitary Landfill are presented together in this document to avoid unnecessary repetition of information common to both proposals. Most of this common information is presented in Part 1. Part 2 of this document is a proposed surface and ground -water monitoring program designed to bring the Corral Hollow Sanitary Landfill into compliance with water -quality monitoring requirements of Subchapter 15, Title 23 of the California Administrative Code (CAC). i EIYICon Associates