ARCHIVED REPORTS XR0000667 - Laserfiche WebLink

Home Browse Search

I �* Quarterly Report - First Quarter 2003 FLAG CITY CHEVRON 6421 Capitol Avenue, Lodi, California I.O. INTRODUCTION AND SCOPE OF WORK At the request of Mr Richard Bokides,Advanced GeoEnvironmental,Inc (AGE)has prepared this quarterly report for 6421 Capitol Avenue (the site), Lodi, California The report documents procedures and results for ground water monitoring and remediation performed at the site between December 2002 and March 2003 (first quarter) The site setting is illustrated on Figure 1 Site structures and monitoring well locations are depicted on Figure 2 I The enclosed report was prepared as required by California Regional Water Quality Control Board- Central Valley Region (RWQCB) Cleanup and Abatement Order No 5-00-700, dated 01 March 2000,and was prepared in accordance with guidelines established by the RWQCB for investigation of underground storage tank (UST) sites Background information and a description of prior investigations at the site were included in AGE's Final Remediation Plan, dated 31 August 2000 The objectives the of first quarter investigations were to characterize, assess and momtor dissolved petroleum hydrocarbons and methyl tert-butyl ether (MTBE) concentrations m ground water, to characterize ground water flow direction and gradient and to continue ground water pump-and-treat remediation at the site The following is a brief summary of first quarter site assessment and remediation activities performed at the site o Between 05 December and 25 March 2003 - Continued "pump-and-treat" remediation utilizing on-site extraction wells EW-4, EW-5, EW-8, EW-9 and EW-10, discharged approximately 2,871,250 gallons of treated Flag City Chevron ground water into a conveyance ditch located approximately 450 feet south of the site • On 27 January 2003-AGE performed a monthly monitoring event at the ground water pump- and-treat remediation system,the submersible pump at EW-5 was damaged,so groundwater extraction at well EW-8 substituted for ground water extraction at well EW-5 I n On 24 February 2003 -AGE performed a monthly monitoring event at the ground water pump-and-treat remediation system o On 25 March 2003 -AGE performed a monthly monitoring event at the ground water pump- and-treat remediation system • 24 & 25 March 2003 - AGE performed a quarterly ground water monitoring event (first quarter 2003) at wells MW-1 through MW-18, EW-1 through EW-10, CSA-1 and CSA-2 Advanced GeoEnvironmentai,Inc