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ARIA stabilized at 1 076 feet of drawdown The step test was restarted on March 31, 2004 with the fourth step at an extraction rate of approximately 3 0 gpm This pumping rate was maintained for 53 minutes until the water table stabilized at 2 192 feet of drawdown A fifth step was performed at an extraction rate of approximately 4 0 gpm This pumping rate was maintained for 20 minutes and produced approximately 2 833 feet of drawdown A sixth step was performed at an extraction rate of 6 0 gpm This pumping rate was maintained for 547 minutes and produced a maximum drawdown of 4 02 feet The pump was set to operate at this final extraction rate overnight, but at around 8 00 PM pumping stopped for unknown reasons On the morning of April 1, 2004,the pump was restarted and was operated for approximately 67 minutes A drawdown of 3 73 feet was achieved The pump was shutdown and the water level recovery was monitored for 80% water column recovery, which occurred in less than a minute after pump shutdown 5-1-85 Groundwater Samples The initial groundwater sample collected from 5-1-85 on March 30, 2004 contained 1 1 ppb MTBE, 3,700 ppb TPHg, 66 ppb benzene, and 22 ppb 1,2-DCA The subsequent groundwater sample collected from 5-1-85 on April 1, 2004 contained no MTBE, 9,100 ppb TPHg, 210 ppb benzene, and 48 ppb 1,2-DCA The certified analytical reports are provided as Appendix H Well S-1 Step Discharge and Constant Rate Testing On April 1-8, 2004, Cambria conducted a step discharge test followed by a constant rate test on well S-1 Groundwater was extracted using a 2-mch diameter Grundfos electric submersible pump The following parameters were monitored during each step duration, flow rate, extracted groundwater volume, and drawdown A totalizing flow meter was used to monitor the flow rate and number of gallons pumped during the tests Pressure head measurements were collected from well S-1, S-3, and S-4, using MmiTrollTM pressure transducers Water levels were also checked manually with an electronic water level indicator from these and other wells Samples were collected periodically from the extracted groundwater stream dunng the test and retained in vials containing hydrochloric acid preservative with no head space These samples were labeled, entered onto a chain-of-custody record, and placed into a cooler with ice for transport to a state of California certified laboratory for analyses The samples were analyzed for TPHg, BTEX,MTBE, and 1,2-DCA by EPA Method 8260B 0797 7