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'• Quarterly Report - Fourth Quarter 2001 <br /> ' National Freight <br /> 2850 Loomis Road, Stockton, Califorma <br /> 1.0. INTRODUCTION <br /> ' At the request of Mr Daniel Folcher of Vineland Construction Co , Advanced GeoEnvironmental, <br /> Inc (AGE)has prepared this report of environmental activities conducted at 2850 Loomis Road(the <br /> site), Stockton, California The scope of work this quarter included monitoring and sampling the <br /> three ground water monitoring wells on the site This report documents the procedures and results <br /> for the monitoring event The location of the site and its surroundings are illustrated on Figure 1, <br /> ' major features and monitoring wells on the site are illustrated on Figure 2 <br /> This investigation was performed in accordance with the guidelines of the Central Valley Regional <br /> Water Quality Control Board (RWQCB) and the San Joaquin County Public Health Services - <br /> Environmental Health Division (PHS-EHD) for investigations of underground storage tank (UST) <br /> sites and sampling ground water monitoring wells <br /> 1 <br /> 2.0. BACKGROUND <br /> lie On 29 September 1998, two 12,000-gallon diesel USTs (Tank No 1 and Tank No 2), two fuel <br /> dispensers and all associated product piping were removed from the site Laboratory analysis of soil <br /> ' samples collected beneath the former UST areas detected total petroleum hydrocarbons quantified <br /> as diesel(TPH-d) at concentrations up to 5,100 milligrams per kilogram(mg/kg) On 29 September <br /> 1999, two soil borings were advanced at the former UST location for collection of soil samples <br /> Laboratory analysis of soil samples collected from the borings detected TPH-d at concentrations up <br /> to 10,000 mg/kg In addition, concentrations of total petroleum hydrocarbons quantified as gasoline <br /> (TPH-g),volatile aromatic hydrocarbons including benzene, toluene, ethylbenzene and total xylenes <br /> ' (BTEX), and the oxygenated ether methyl tertiary butyl ether(MTBE)were detected in analyzed soil <br /> samples Results and procedures of the preliminary site investigation were presented in AGE's <br /> Preliminary Investigation and Evaluation Report, dated 12 October 1999 <br /> ' In August 2000 four additional soil borings were <br /> g g advanced at the site,three of the soil bonrigs were <br /> ' completed as ground water monitoring wells Details of the soil boring and monitoring well <br /> installation were presented In Quarterly Report - Third Quarter 2001, dated 27 October 2000, <br /> prepared by AGE <br /> 3.0. PROCEDURES <br /> Ground water monitoring and sampling procedures were performed in accordance with the <br />' Advanced GeoEnvwonmentel,Inc <br />