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�0© GROUNDWATER r 1 Pl [LIE] TECHNOLOGY, INC. y �? 1401 Halyard Drive Suite 140,West Sacramento CA 95691 916)3724700 FAX(916)372 8781 March 31, 1994 Project No 020205510 Site Code 2155 Ms Linda Turkett San Joaquin County Public Health Services P 0 Box 2009 445 N San Joaquin Street Stockton, CA 95201 SUBJECT First Quarter 1994 Status Report Manteca Bean Facility 229 Moffat Boulevard, Manteca, California Dear Ms Turkett . On behalf of Golden Grain Company, Groundwater Technology, Inc has prepared this First Quarter 1994 Status Report on groundwater and sod conditions at the Manteca Bean Facility in Manteca, California (Attachment 1, Figure 1), for the quarter ending March 1994 The purpose of the work completed during this quarter was to perform treatment system operation and maintenance, calculate the groundwater gradient, and evaluate the distribution of dissolved hydrocarbons in groundwater Groundwater monitoring data and results of laboratory analyses of groundwater samples collected on February 18, 1994, are included All work was performed as described in a monitoring and sampling plan submitted to, and approved by, San Joaquin County Public Health Services on February 27, 1992 I In addition to quarterly monitoring and sampling activities, the sod and groundwater remediation system was operated and maintained during this quarter Details regarding the operation of the system through March 3, 1994, including the efficiency of the system and the continued remediation plans for the site, are discussed below MONITORING WELL GAUGING Before well purging and water sample collection on February 18, 1994, Groundwater Technology personnel gauged all of the site wells to measure the depth to water and the depth to separate- phase hydrocarbons (SP), if present The well gauging was conducted in accordance with the 55108014 020 I Offices throughout the US Canada and Overseas