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*1 <br /> i I <br /> GROUNDWATER <br /> TECHNOLOGY INC. <br /> � 4115 7 Port L-I1La5U HighHa% LuRLa[(1 C a 9472f)r 4L5if,;11 23b; <br /> FA\ (4151 0, 5u14� <br />�= October 22, 1992 Project Number 02320 1466 <br /> Mr John W Colley <br /> ' Project Engineer <br /> Golden Grain Company <br />_ 1111 - 139th Avenue <br /> San Leandro, CA 94578 <br /> RE: THIRD QUARTER 1992 REPORT <br /> MANTECA BEAN FACILITY <br /> 229 MOFFAT BOULEVARD <br /> MANTECA, CALIFORNIA <br /> A <br /> Dear Mr Colley <br /> This letter is presented by Groundwater Technology, Inc as a quarterly report on groundwater <br /> conditions at the Manteca Bean Facility in Manteca, California, for the quarter ending September <br /> i1992 Groundwater monitoring and sampling was conducted in accordance with our February 13, <br /> 1992, proposal to Golden Grain Company, a division of the Quaker Oats Company The purpose of <br /> the field work was to determine water table flow and the distribution of dissolved hydrocarbons in <br /> selected groundwater monitoring wells (MWs) Groundwater monitoring data and results of <br /> laboratory analyses of groundwater samples collected on August 21, 1992, are included All work <br /> was performed as described in a monitoring and sampling plan submitted to, and approved by San <br /> 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 installed during this quarter Details regarding the construction activities and the <br /> operation of the system will be discussed, along with the efficiency of the system and the long range <br /> remediation plans for the site <br /> Monitoring Well Gauging <br /> r Prior to well purging and water sample collection on August 21, 1992, Groundwater Technology <br /> personnel gauged the 15 site-related monitoring wells to determine the depth to water and the depth <br /> to separate-phase petroleum (SP), if present The well gauging was conducted in accordance with <br /> the Leaktna Underground Fuel Tank Field Manual (LUFr) published by the State of California <br /> i <br /> Leaking Underground Fuel Tank Task Force dated October 1989 Groundwater monitoring data are <br /> !ltlu c�thrrurglrnut!!n f ti (rrrrurlu enol Or er�urs i <br /> z F <br />