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First Quarter 1995 Status Report 3 Golden Grain Company, Manteca Bean Facility,229 Moffat Blvd , Manteca,CA April&, 1995 ■ checking and calibrating the system lower explosive limit (LEL) meters ■ recording operational data and maintaining vacuum extraction blowers and vapor extraction system (VES) r checking and recording operational data for the air stripper and making adjustments as necessary ■ checking the condition of the catalytic water conditioner which minimizes fouling caused by the hardness of the water ■ performing a dally system operating parameters check via modem The soil vapor extraction and groundwater treatment systems ran continuously this quarter except during four occasions The following is a list of the days that the remediation system was not operational 01/01/95-01/11/95 The groundwater extraction system was non-operational because the relay from the phase converter to the air stripper blower failed A new relay had to be ordered prior to replacement The soli vapor extraction system continued to operate during the groundwater extraction system down time 01/21/95-01/25/95 The groundwater extraction system was non-operational because the discharge line became clogged with calcium carbonate chips from the air stripper trays The chips were removed, the air stripper plates were cleaned, and the system was restarted The soil vapor extraction system continued to operate during the groundwater extraction system down time 02/20/95-02/22/95 The fresh air bleed to the soil vapor extraction system was tripped for an unknown reason and the groundwater extraction system was shut down by the safety interlocks The system was restarted within two days of the system shutdown 02/26/95-02/28/95 A blown fuse in the catalytic oxidizer control panel caused the soil vapor extraction system to shut down and the groundwater system was shut down by the safety interlocks The fuse was replaced and the system was restarted within two days of the system shutdown During this quarter of operation, there were no releases of untreated groundwater or untreated system effluent vapors except for a 2 0 p g/L detection of xylenes in the effluent vapor during the February 22, 1995, sampling event System shutdowns were planned or occurred as a result of designed system safety interlocks, which shut down the remediation systems to preclude untreated . releases The xylenes detected in the catalytic oxidizer effluent was below the permit discharge limit, 0102no13 lox GROUNDWATER TECHNOLOGY, INC