ARCHIVED REPORTS XR0001263 - Laserfiche WebLink

Home Browse Search

lY Cumulative FP Recovered to Date NA Approximate Depth to Groundwater 22 77 to 26 82 Direction of Groundwater Flow Northeast to East Groundwater Gradient 0 001 to 0 003 SVE QUARTERLY OPERATION AND PERFORMANCE Equipment Inventory King, Buck&Associates MMC5A(100 scfm) Operating Mode Catalytic SJVUAPCD Permit No N-3664-1-0 TPHG Conc at End of Period (lab) 14,000 mg/m3 Benzene Conc End of Period (lab) 190 Mg/M3 Flow Rate End of Period 25 cubic feet per minute re-dilution Applied Vacuum This Period 19 inches of water HC Destroyed this Period (lab) 1,880 pounds Utility Usage (electrical/gas/propane) 6,177 kilowatt hours Operating Hours This Period 936 Percent Time Operational 61% Number of Auto Shutdowns 2 (1-power failure, 1-high tem CURRENT SOURCE (BEFORE DILUTION) INFLUENT SUMMARY(LAB) TPHG Conc This Period 27,666 66 mg/m3(average) TPHG Conc Last Period NA Initial TPHG Conc 55,000 mg/m3 (January 24, 1997 [following system startup)) Benzene Conc This Period 51333 Mg/M3(average) Benzene Conc Last Period Not applicable Initial Benzene Concentration 980 mglm3(January 24, 1997[following system startup]) DISCUSSION Results of this groundwater monitoring event indicate that levels of dissolved gasoline hydrocarbons are consistent with levels detected during previous sampling events The groundwater flow direction and gradient are consistent with previous sampling events Groundwater elevation increased approximately 4 0 feet from the previous sampling event (November 1996) The remediation system was started up on January 24, 1997 The remediation system consists of a King, Buck and Associates MMC5A Catalytic Oxidizer rated at 100-cubic-feet-per-minute The • remediation system is connected to vapor extraction wells VW-4 through VW-13 The system was operational for 61 percent of the time during the first quarter and extracted a total of 1,880 pounds of SAC1N 1PJO10805108051461 OBS-961cjb 1 Rev 0 6112197