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Geosynte& <br /> consultants <br /> establishment of their headquarters on the island in 1960 (PRC 1997a). The United States Navy <br /> (Navy) transferred RRI to the Port through the United States Department of Transportation <br /> Maritime Administration (MARAD) in 2000, 2002, 2003, and 2011, and RRI is now under <br /> development by the Port. <br /> 1.2 Regulatory Framework <br /> On July 30, 2003, the Port entered into a Consent Agreement with the State of California, the <br /> California Environmental Protection Agency Department of Toxic Substances Control (DTSC), <br /> and the Central Valley Regional Water Quality Control Board (CVRWQCB) for RRI (State of <br /> California 2003). DTSC is the lead regulatory agency and the CVRWQCB is the supporting <br /> agency for environmental work at RRI, except with respect to petroleum underground storage <br /> tanks (USTs) and petroleum contaminated sites, for which the CVRWQCB is the lead regulatory <br /> agency and DTSC is the supporting agency. <br /> RRI consists of approximately 1,459 acres, of which approximately 500 acres make up 36 parcels <br /> that contain a total of 50 sites covered by the Consent Agreement (Figure 2). The Consent <br /> Agreement states: "Groundwater plume investigations need to be completed and remediation may <br /> be required at IAS-3/4, 7, 16 and Site 39, Site 49 (Includes groundwater plume at Site 2, 5A, 5B, <br /> 5C, 5D, 43 and 49),former UST/Sump at Bldg 816D, Site 3, Site 4, Site 5D, USTIOWS B16"(State <br /> of California 2003). The table below provides a description of how the Navy formerly used these <br /> sites. <br /> Description of RRI Groundwater Sites <br /> Site Description <br /> Site 2 Battery Acid Disposal Site <br /> Site 3 Firefighter Training Area <br /> Site 4 Leaking Chemical Containers Storage Area <br /> Site 5A Sump/Drainage Swale <br /> Site 5B Waste Oil Tank at Building 816C <br /> Site 5C Railroad Car Service Pits <br /> Site 5D Storm Drain at Buildings 816 and 916 <br /> Site 39 1 Landfill Area <br /> Site 43 Storage Areas <br /> Site 49 Former UST and Sump at Building 816D <br /> IAS-3/4 Disposal Trench in Landfill Area <br /> IAS-07 Landfill Area <br /> IAS-16 Landfill Area <br /> RRI 2025 Groundwater Monitoring Work Plan 2 May 2025 <br />