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SVE QUARTERLY OPERATION AND PERFORMANCE Equipment Inventory Two 200 cfm King, Buck & Associates SVE Systems[SL Nos 9321(Unit 1)&9230(Unit 2 Extraction Wells VW-6, VW-8, VW-9, & MW-9 connected to Unit 1 (currently) VW-1, VW-14, MW-3, & MW-7 connected to Unit 2 currents Operating Mode Catalytic _ Required Permits San Joaquin Valley Air Pollution Control District Permit Nos N-5026-1-0& N-5026-2-0 GRO Cone End of Period [Unit 11 7,600 mg/m3 (total influent) GRO Cone End of Period [Unit 2] 6,400 Me/M3 total influent Benzene Cone End of Period (Unit 1] _ 110 mg/m3(total influent) Benzene Cone End of Period [Unit 21 100 mg/m3 total influent MTBE Cone End of Period [Unit 1] <5 0 m Im3 total influent MTBE Cone End of Period [Unit 2] <5 0 mg/m3(total influent) _ Average Flow Rate This Period [Unit 1] 176 42 scfm Average Flow Rate This Period [Unit 2] 262 98 scfm Applied Vacuum This Period [Unit 1] 10 inches water column • Applied Vacuum This Period [Unit 2] 10 inches water column FIC Destroyed This Period (tab) 5,284 56 lbs as GRO from both units Cumulative FIC Destroyed 8,623 lbs as GRO from both units Number of Auto Shutdowns 1 (each Unit) _ DISCUSSION Upper Water Bearing Zone end Zone 1 During the site visit conducted on September 6, 2004, free product was measured in well VW-4 at a thickness of 0 08 feet Approximately 2 gallons of product/water mixture was manually balled on September 6, 2004, and stored in a properly labeled DOT approved drum pending disposal Approximately 12 gallons of productlwater mixture has been manually balled to date Product thickness measurements and volumes of liquid balled are summarized in Table 1 At the time of the third quarter 2004 monitoring event, groundwater levels had decreased between 0 04 and 5 01 feet in wells MW-2, MW-13, VW-1, VW-3, and VW-4 since the previous monitoring event (June 21, 2004) Depth-to-water measurements were normalized to mean sea level (MSL) and used to construct a groundwater elevation contour map (Figure 3) Wells that contained less than 1 foot of water are interpreted to be dry and are indicated as "dry" on Figure 3 Because wells VW-1 and VW-6 are screened in a shallower interval than wells VW-2, VW-4, MW-2, and MW-13, these two wells were not used in contouring Groundwater flow was to the south-southeast at a gradient of 0 071 ft/ft Groundwater flow in the upper water bearing zone has been to the south-southeast and toward the southwest during previous quarters . GRO, benzene, and MTBE were reported in wells VW-1 and VW-3 GRO and benzene were also reported in wells MW-13 and VW-6 The highest concentrations of GRO (120,000 µgll_), benzene (32,000 P IBp-Arco for URS\6I001Quarteriy120041Arco_6100_3QO4 doc STRATUS