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APR 10199a <br /> ��❑❑� GROUNDWATER❑❑❑ ENV90NMENTALHEA <br /> �'�1.11�iIT/SERVICES n TECHNOLOGY O Groundwater Technology,Inc <br /> 4057 Port Chicago Highway,Concord,CA 94520 USA <br /> April 6, 1994 Tel (510)671-2387 Fax (510)685-9148 <br /> Ms Linda Turkett <br /> San Joaquin County Public Health Services <br /> P O Box 2009 <br /> 445 N San Joaquin Street <br /> Stockton, CA 95201 <br /> Subject First Quarter 1995 Status Report <br /> Golden Grain Company, Manteca Bean Facility <br /> 229 Moffat Boulevard, Manteca, California <br /> GTI Project 042020102 <br /> Dear Ms Turkett <br /> On behalf of Golden Grain Company, Groundwater Technology, Inc has prepared this First <br /> Quarter 1995 Status Report on groundwater and soil conditions at the Manteca Bean Facility in <br /> Manteca, California (attachment 1, figure 1), for the quarter ending March 10, 1995 The field work <br /> included weekly treatment system operation and maintenance along with quarterly groundwater <br /> monitoring and sampling <br /> The groundwater monitoring and sampling results enabled evaluation of the groundwater gradient <br /> and distribution of dissolved hydrocarbons in groundwater Groundwater monitoring data and <br /> results of laboratory analyses of groundwater samples collected on February 16, 1995, are included <br /> All work was performed as described in a monitoring and sampling plan submitted to, and approved <br /> by, San Joaquin County Public Health Services on February 27, 1992 <br /> In addition to quarterly monitoring and sampling activities, the soil and groundwater remediation <br /> system was operated and maintained during this quarter Details regarding the operation of the <br /> system through March 10, 1995, including the system efficiency and future remediation plans for the <br /> site are discussed below <br /> MONITORING WELL GAUGING <br /> Before well purging and water sample collection on February 16, 1995, Groundwater Technology <br /> personnel gauged all of the site wells to measure the depth to water and the depth to <br /> separate-phase hydrocarbons, if present (attachment 2, table 1) The well gauging was conducted <br /> in accordance with the Leaking Underground Fuel Tank (LOFT) Field Manual published by the State <br />`•' of California Leaking Underground Fuel Tank Task Force, dated October 1989 <br /> 01028015 202 <br /> Offices throughout the U 5,Canada and Overseas <br />