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a , <br /> C A M B R I A <br /> discharges it directly into the sewer system GWE system analytical data and GWE system mass <br /> removal data are presented in Table 2 and Table 3, respectively MTBE concentrations and mass <br /> removal from well RW-1A are depicted in Figure 3 Volume and mass removal data for vacuum <br /> truck operations and the permanent GWE system are summarized in the table below <br /> Mass TPHg Mass MTBE Volume <br /> Removed(pounds) Removed (pounds) Groundwater <br /> Removed (gallons) <br /> Vacuum Truck 397 671 622,649 <br /> Operations <br /> Permanent GWE 462 637 1,357,110 <br /> System <br /> Total (GWE) 859 1308 1,979,759 <br /> ANTICIPATED FIRST QUARTER 2003 ACTIVITIES <br /> Blaine will gauge and sample the site wells according to the established sampling schedule and <br /> tabulate the data Cambria will prepare a groundwater monitoring report <br /> CONCLUSIONS AND RECOMMENDATIONS <br /> The petroleum hydrocarbon and MTBE concentrations in groundwater- samples collected from <br /> the shallow wells this quarter are within the historical norm for this site Wells MW-5, MW-8 <br /> and RW-IA continue to contain the highest levels of hydrocarbons and MTBE Analytical data <br /> from offsite wells suggests the hydrocarbons and MTBE detected in onsite wells are remaining <br /> onsite <br /> Cambria recommends continued monitoring and sampling of site monitoring wells to evaluate <br /> concentration trends now that a groundwater extraction system is in operation, full time, at the <br /> site <br /> ANALYTICAL REDUCTION APPROVAL <br /> Cambria received the San Joaquin County Environmental Health Department (EHD) March 6, <br /> 2003 correspondence approving our request for groundwater sample analytical reductions for <br /> selected wells We wanted to clarify one statement in EhID's correspondence EHD mentions <br /> that wells MW-12, MW-13, and MW-14 (among other wells) are going to continue to be <br /> • analyzed quarterly for all constituents This is not the case with these three wells, as they have <br /> 0783 2 <br />