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AMBRIA <br /> On June 20, 2001, a permanent GWE and treatment system began removing groundwater, <br /> treating it, and discharging it directly into the sanitary sewer system GWE system analytical <br /> data and GWE system mass removal data are presented in Table I and Table 2, respectively <br /> Methyl tertiary butyl ether (MTBE) concentrations and mass removal from well RW-1A are <br /> depicted in Figure 3 Volume and mass removal data for vacuum truck operations and the <br /> 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 627 764 2,261,560 <br /> System <br /> Total (GWE) 1,024 1,435 2,584,209 <br /> During the third quarter of 2004 the GWE system operated through August 5, 2004 when <br /> Cambria personnel discovered water was overflowing from the GWE system transfer tank and <br /> flowing into a storm drain inlet This incident, and Cambria's response to it, are documented in <br /> our 5-Day Incident Report, dated August 12, 2004, GWE System Modification Report, dated <br /> August 24, 2004, and August 2004 Self-Monitoring Report, dated September 9, 2004 The <br /> system has remained off since it was shut down on August 5, 2004, pending permit approval to <br /> treat and discharge the water generated in response to this incident <br /> ANTICIPATED FOURTH QUARTER 2004 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 The GWE system will <br /> be restarted as soon as the spill clean up water has been treated Underground storage tank <br /> removal activities and overexcavation activities may occur during the fourth quarter, but these <br /> activities have not yet been scheduled <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 and <br /> RW-1A continue to contain the highest levels of hydrocarbons and MTBE, however it appears <br /> that GWE efforts have reduced MTBE and benzene concentrations in the vicinity of these wells <br /> 0783 2 <br />