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monitoring and recovery wells were drilled-out to total depth, backfilled to near surface grade with Portland type II cement and completed at the surface with native material. All well construction materials were removed and properly disposed of. Well destruction activities were conducted in accordance with Central Valley Water Board guidelines, and under a San Joaquin County Environmental Health Department drilling permit. LNAPL Recovery Approximately 3,000 gallons of free product was recovered from the initial response in 1996, along with an additional 2,000 gallons of mixed TPH and water. Skimming efforts from 1999-2015 removed about 260 gallons of free product. Finally, AdvancedGeo estimates that a total of 489 gallons of free product and dissolved TPH have been removed through the DPE remedial efforts, for a total of 3,749 gallons of LNAPL recovered, along with 2000 gallons of mixed diesel and water from the initial response. Confirmation sampling shows no free-phase product was observed in any of the recovery wells, and dissolved TPH-d concentrations have decreased since the last sampling event in May 2019. Issues Although approximately 7,995 pounds of absorbed mass and 3,400 lbs of TPH consisting of combined LNAPL and TPH dissolved in water were removed through the dual-phase extraction remediation efforts, AGE estimates that approximately 32,052 pounds (4612 gallons) of absorbed TPH-d and approximately 42.8 pounds (6 gallons) of dissolved TPH-d remain on site. The LNAPL recovery system has been terminated and no free-phase product has been detected in any of the recovery wells. Confirmation sampling showed lower concentrations of dissolved TPH-d in recovery wells RW-2, 4, 7, & 8, with maximum concentrations found in RW-2 at 52,000 ug/L, down from 264,000 ug/L in May 2019. No constituents of concern are observed in any of the monitoring wells, indicating that the groundwater plume is stable and decreasing, and is expected to continue to decrease TPH-D concentrations, with the highest in CB-8 at 11 feet bgs at 18,000 mg/kg. This is reduced from 2015 when 24,200 mg/kg of TPHd was measured in a soil sample obtained from the boring of well RW-8, which is adjacent to the confirmation sampling point. Confirmation grab groundwater sampling showed residual TPH-d in shallow groundwater around the former furnace building. The highest concentration was 580 ug/L, well below the concentrations observed in recovery wells. Rationale Several remedial efforts have been implemented at the site. The most recent, Dual- Phase Extraction, has removed free product to the maximum extent possible. Since remediation stopped, free phase LNAPL has not been detected in any of the recovery wells. Dissolved TPH-d concentrations have decreased since the previous sampling event in May 2019, and soil samples located adjacent to previous sampling locations showed a decrease in TPH-d concentrations in soil. Staff believe that remediation has been implemented to the extent practicable, the plume is stable, decreasing, and