ARCHIVED REPORTS XR0000673 - Laserfiche WebLink

Home Browse Search

Quarterly Report - Second Quarter 2002 FLAG CITY CHEVRON 6421 Capitol Avenue, Lodi, California 1.0. INTRODUCTION AND SCOPE OF WORK At the request of Mr Richard Boludes, 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 during April, May and June 2002 (second quarter), this report also proposes a new, reduced ground water monitoring program that is outlined in section 9 0 (recommendations) The enclosed quarterly report was prepared as required by California Regional Water Quahty Control Board - Central Valley Region (RWQCB) Cleanup and Abatement Order No 5-00-700, dated 01 March 2000 The site setting is illustrated on Figure 1 Site structures and monitoring well locations are depicted on Figure 2 The objectives the of second quarter investigations were to characterize, assess and monitor dissolved petroleum hydrocarbons and methyl tert-butyl ether (MTBE) concentrations in ground water, to characterize ground water flow direction and gradient and to continue ground water pump - and --treat remediation at the site This report is 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 following is a brief summary of second quarter site assessment and remediation activities performed at the site, m addition to the water level measurements conducted during the June quarterly monitoring event, monthly water level measurements were collected in April and May in accordance with a RWQCB letter dated 28 February 2002 • 27 March through 13 June 2002 - Discharged approximately 1,075,700 gallons of extracted and treated water into Coldam Ditch • 01 April through 30 April 2002 - Continued "pump -and -treat" remediation utihzmg on-site extraction wells EW -4, EW -5, EW -9 and EW -10, 0 16 April 2002 - Monthly ground water pump -and -treat influent, effluent and receiving water monitoring event • 30 April 2002 - Month of April depth to ground water monitoring well measurements • 01 May through 15 May 2002 - Ground water pump -and -treat system operations temporarily suspended due to maintenance on pump -and -treat system process pump • 16 May through 30 June 2002 - Continued "pump -and -treat" remediation utilizing on-site extraction wells EW -4, EW -5, EW -9 and EW -10 Advanced GeoEnvironmental, Inc