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1 ' i <br /> ` ' _. � r - - t - a — � h w r zS r N'=i_ 'r i- =� - _ �+ L - •c ..y - <br /> i <br /> t E <br /> Quarterly Report First Quarter.2000 = <br /> FLAG CITY CHEVRON I, <br /> 6421 Capitol Avenue, Lodi, California <br /> j <br /> 1 0 INTRODUCTION AND SCOPE OF WORK <br />' At the request of Mr Richard Bokides,Advanced GeoEnvironrnental, Inc (AGE) has prepared this <br /> Quarterly Report for 6421 Capitol Avenue (the site), Lodi,'California The report_documents , <br /> procedures and results for subsurface investigation conducted at the site dunng January, February <br />' and March 2000 (fust quarter) The enclosed quarterly report was prepared as required by Central <br /> Valley Regional Water Quality Control Board (RWQCB) Cleanup and Abatement Oi der No 5-00- <br /> 700, dated 01 March 2000 The site setting is illustrated on Figure 1 Site structures and monitonng <br />' well locations are depicted on Figure 2 , <br /> The objective of first quarter' investigation was to chaiacterze, assess and monitorr4dissolved <br />' peti oleum hydrocarbons and methyl tent butyl ether(MTBE) concenti ations in ground water and to <br /> characterize ground water flow direction and gradient at' the site This report is prepared' in <br />' accordance with guidelines established by the San Joaquin County Public health Services - , <br /> Environmental Health Division (PHS-EHD) and by the Central Valley Regional Water Quality <br /> Control Board(CVRWQCB) for investigation of underground storage tank(UST) sites Background <br /> inforrnation and a description of prior investigations at the site v,as included in AGE's mark Plan <br /> Addendum -March 2000, dated 08 March 2000 <br /> r <br />' The following is a brief summary of first quarter site assessment activities performed at the site <br /> • 25 February 2000 -A ground water monitoring and sampling event was performed at the site <br />' and documented to the RWQCB in Monthly Ground [Vater Monitoring Repo)t - Fehr uary h <br /> 2000, dated 20 March 2000 <br />' 14 March 2000 ^Aquifer "step-down' pump test' <br /> • 14 March 2000 - Soil-gas survey <br /> 1 24 March 2000 - Douln-hole doinestic water well video camera probe h' <br /> n <br /> • 28 March 2000 - Monthly groundwater monitoring and sampling event <br /> 28 March 2000 - Installation of ground water extraction well (EW-1) 5 <br /> • 28-30 March 2000 - Advancement of five CPT soil borings (P-13, P-14, P-15, P-16 and <br /> t <br /> P-17) , <br /> 2 0 AQUIFER STEP DRAW-DOWN PU117P TEST <br /> On 14 March 2000, an aquifer step draw-down pump test ('P u'np test) was peifonned at the site to <br /> ro Advanced CcoEn%ironmental Ine <br />