SITE INFORMATION AND CORRESPONDENCE_1997

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EFetfine-Fricke-Recon from July 21 through 31, 1997 (see Figure 1 for locations). Monitoring wells will be installed in the A-, B-, and C-zone aquifers at this location in August 1997. • The shallow soil-vapor investigation in and around the suspected source areas along selected sanitary sewer lines at Lincoln Center continued from June 2 through July 25, 1997 and is ongoing. • CPT and PIPP sampling were conducted at source area locations and on neighboring private properties occupied by Bill Park's Chevron, World Savings, S-Mart, and Thrifty/Payless as part of the Interim Remedial Action (IRA) field scoping activities on June 29 through July 11, 1997. • Survey activities were conducted on June 11 and July 16, 1997, to obtain top of casing elevations for newly installed monitoring wells, and to obtain horizontal locations and ground surface elevations for the soil-vapor sample locations and CPT/PIPP borings installed during the source area investigation and the IRA field scoping activities. Document Submittals The following documents were completed and issued during the bimonthly period: • Advance public notices were provided on June 5, 1997 to the Bank of Stockton, located adjacent to the proposed plume perimeter monitoring well locations on the Pacific Avenue frontage road. Advance public notices were provided on June 23, 1997 to residents located in the immediate vicinity of the proposed CPT/PIPP plume perimeter investigation conducted in the neighborhood upgradient and west of Lincoln Center (see Figure 1 for locations). Permit applications for field activities, including the plume perimeter and source area investigations, were submitted to the San Joaquin County Public Health Services, Environmental Health Division, San Joaquin County Department of Public Works, and City of Stockton Department of Public Works. • A permit application for temporary waste discharge to the sanitary sewer was submitted to the City of Stockton Municipal Utilities Department (COS MUD) on April 2, 1997 for discharge of treated wastewater generated during the investigation. The permit was issued by the COS MUD on June 5, 1997. However, approval for discharge of treated groundwater into the sanitary sewer has not yet been received from San Joaquin County. • The document entitled "Public and Private Well Survey Report, Lincoln Center, Stockton, California," was issued to all parties on July 21, 1997. bimonthly-aug97-041I LSRL 2