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� I <br /> Levy '^`'�#SB TT_Fi�"ef( 1:'AL k 1! <br /> �ti I <br /> e �❑� I ',i <br /> ❑O❑ <br /> GROUNDwAT ; <br /> , .'TECHNOLOGY,..INC. <br /> 4057 Part Chicago Highway,Concord CA 94520(4I5)6712387 <br /> FAX (415)685 9148 <br /> September 17, 1993 <br /> Project No 020703879 <br /> Site Code 2155 <br /> I <br /> Ms Linda Turkett <br /> San Joaquin County Public Health Services <br /> P 0 Box 2009 <br /> 445 N San Joaquin Street <br /> Stockton, CA 95201 <br /> SUBJECT Third Quarter 1993 Status Report <br /> Manteca Bean Facility <br /> 229 Moffat Boulevard, Manteca, California <br /> Dear Ms Turkett <br /> On behalf of Golden Grain Company, Groundwater Technology, Inc has prepared this Third Quarter <br /> 1993 Status Report on groundwater and soil conditions at the Manteca Bean Facility In Manteca, <br /> California (Attachment 1, Figure 1), for the quarter ending September 1993 The purpose of the field <br /> work was to perform treatment system operation and maintenance, calculate the groundwater <br /> gradient, and evaluate the distribution of dissolved hydrocarbons in groundwater Groundwater <br /> monitoring data and results of laboratory analyses of groundwater samples collected on August 12, <br /> 1993, are included All work was performed as described in a monitoring and sampling plan <br /> submitted to, and approved by, San Joaquin County Public Health Services on February 27, 1992 <br /> In addition to quarterly monitoring and sampling activities, the sod and groundwater remediation <br /> system was repaired on June 28, 1993, and was operational during this quarter Details regarding <br /> the operation of the system through September 2, 1993, including the efficiency of the system and <br /> the continued remediation plans for the site, are discussed below <br /> MONITORING WELL GAUGING <br /> Before well purging and water sample collection on August 12, 1993, Groundwater Technology <br /> personnel gauged 14 of the 15 site wells to measure the depth to water and the depth to separate- <br /> phase hydrocarbons (SP), d present The well gauging was conducted in accordance with the <br /> Leaking Underground Fuel Tank (LUF7) Field Manual published by the State of California Leaking <br /> Underground Fuel Tank Task Force dated October 1989 A 0 03-foot-thick layer of separate-phase <br /> hydrocarbons was encountered in groundwater monitoring well MW-4 during monitoring and <br /> gauging procedures Groundwater monitoring data are summarized in Attachment 2, Table 1 <br /> 3157913013 ago <br /> -1� <br /> Offices throughout the US Canada and Overseas <br />