Laserfiche WebLink
CAMBRIA <br /> June 21, 2002 <br /> Harlin Knoll <br /> San Joaquin County Public Health Services <br /> 304 East Weber Avenue,Third Floor <br /> Stockton, California 95202 c—_ <br /> Cn <br /> RE Second Quarter 2002 Groundwater Monitoring Report <br /> BP Oil Site No 11194 <br /> 2375 Tracy Boulevard r ~T <br /> Tracy, California - <br /> Cambria Project No 852-1756 <br /> Dear Mr Knoll <br /> On-behalf of BP `Oil Company, Cambria Environmental Technology, Inc has prepared this <br /> Second Quarter 2002 Groundwater Monitoring Report for the above referenced site This report <br /> summarizes chemical data collected since 1987 including analytical results associated with <br /> samples recently collected on April 30, 2002 <br /> Water level and analytical results .for this monitoring event are summarized in Figure 1 and on <br /> Table 1 of Appendix A Based on the contoured elevations, water generally flowed toward the <br /> northwest I During this monitoring event, only well MW-6 reported more than <br /> 100 micrograms per liter (gg/L) of benzene, with a concentration of 116 gg/L More than <br /> 1,000 gg/L of methyl tert butyl ether (MTBE) was reported in wells AMW-5 and MW-2, with a <br /> maximum concentration of 2,140 gg/L in well MW-2 <br /> Benzene and MTBE concentrations and water- level trends for wells MW-2 and MW-7 are shown <br /> in Figures 2 and 3, respectively Analytical results below method reporting limits are plotted at <br /> one half the detection limit (open symbol) Based on the decreasing trends exhibited in these / <br /> Oakland CA wells, the monitoring well network is adequate and additional investigation is not warranted at , <br /> San Ramon, CA this time <br /> San Oma CA <br /> Cantbna <br /> Environmental <br /> Technology,Inc <br /> 65th street <br /> Suite 8 <br /> Oakland CA 94608 / <br /> Tel(510)420-0700 <br /> fax(510)420-9170 / <br /> r/ <br /> t <br />