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1 <br /> ///7APEX <br /> 1844 Madison Avenue,Suite 106 • Fair Oaks,CA 45628 <br /> E N V I R 01 E C H , I N C . 1.800.242.5244 • Ph.916.535.0200 • Fax 16.535.0207 <br /> August 25, 2000 <br /> Mr. Jerry Moore ~c? <br /> Moore Petroleum �. <br /> 5491 F Street <br /> Banta, California <br /> Subject: Results Report for Limited Subsurface Investigation and <br /> Third Quarter 2000 Groundwater Monitoring Report <br /> Moore Petroleum Bulk Plant, 5491 F Street, Banta, California <br /> Apex Project# ERA02.004 <br /> Dear Mr. Moore: <br /> Apex Envirotech, Inc. (Apex), is pleased to provide Moore Petroleum (Moore) this report <br /> documenting the results from the Limited Subsurface Investigation/ Well Installation performed <br /> on July 25 and 26, 2000. The subsurface investigation consisted of the completion of four soil <br /> borings, with three borings being completed as monitoring wells (MW-10, MW-11, and MW- <br /> 12). One boring (SB-Deep) was advanced using continuos coring techniques to delineate the <br /> vertical extent of MTBE migration in the source area. Also, a water sample was collected from <br /> the Rhodes residence domestic well, which is located east of the site. In addition, this report also <br /> includes results from the quarterly groundwater monitoring conducted on August 15, 2000. The <br /> monitoring included collection of depth-to-water measurements and groundwater samples from <br /> all existing monitoring wells MW-1, MW-2, MW-3, MW-4A, and MW-5 through MW-12 at the <br /> subject site (Figures 1 & 2). Finally, this report addresses deficiencies related to the results of the <br /> well search conducted by Delta Environmental Consultants. A copy of the letter from San <br /> Joaquin County, Public Health Services (County) requiring the tasks listed above is included as <br /> Appendix A. <br /> BACKGROUND <br /> Apex began work on this project with the groundwater monitoring conducted on January 14, <br /> 1994. Prior to Apex, work conducted at the site included subsurface investigations and <br /> groundwater monitoring by Earth Treatment Systems, Inc., of Manteca, California; Delta <br /> Environmental Consultants, Inc., of Rancho Cordova, California; Nations Groundwater <br /> Associates of Sacramento, California; and Aegis Environmental, Inc. (Aegis), of Roseville, <br /> California. Site details may be found in the Quarterly Groundwater Monitoring Report, dated <br /> ti,.� April 18, 1991, submitted to Moore Petroleum by Aegis. <br />