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' Quarterly. Rep ort - March and ,June 1999: <br /> . Geweke Land Development &Marketing . <br /> : .16 Soutti Cherokee Lane,.Lodi, California <br /> 11.0. INTRODUCTION AND SCOPE OF WORK <br /> At'the request of-Geweke'Land=Development & Marketing •(GLDM), and do �accordarice with" <br /> ' Cleanup.and Abatement Order No: 93-701,Advanced GeoEnvironmental, Inc. (AGE)has prepared . <br /> this report of monitoring and remediation field activities performed at 16' South Cherokee Lane, ` <br /> Lodi, California during the first and second quarters of 1999.'The site and its surroundings are <br /> illustrated on Figure I - Vicinity Map. Structures and well locations related to the site are shown'on <br /> Figure 2 Site Plan. <br /> - The scope of work covered by this report was-to add hydrogen peroxide to r 'ells, collect soil,and <br /> groundwater samples for analysis to characterize the current status'of the hydrocarbon iiripact"at the <br /> site, to summarize the progress of the in-situ bioremediation project, and to document,monitoring <br /> activities at the site during the first and second;quarters of 1999. Results of previous investigations <br /> are detailed in the Problem Assessment Report (PAR) and the Quarterly Report- March 1996. <br /> Analytical results from previous monitoring events are included in Tables, 4, 5, 8,and 9 of this <br /> report. <br /> • 2.0. PROCEDURES <br /> Soil sampling was'performed on 09 and 10 February 1999; quarterly ground water.monitoring was <br /> performed on 17 March and.24 June 1999. Cross sections we're prepared illustrating the extent of. <br /> impacted soil and mass balance calculations were performed. Field work was ,performed,in <br /> accordance with San Joaduin County Public Health Services-Environmental Health-Division (PHS- J- <br /> EHD) and Central Valley Regional Water Quality Control Board_ (CVRI QCB) guidelines for the <br /> investigation of underground storage tank.(UST) sites. <br /> 2.1 ADDITION OF HYDROGEN PEROXIDE TO WELLS <br /> - On 27 January 1999, hydrogen peroxide was added ito 18-wells at the`site'A total-of 108'gallons of <br /> hydrogen peroxide, diluted to approximately 1 percent, was added to selected monitoring and vapor " <br /> wells at,the site. Thehydrogen-peroxide was added-to increase dissolved oxygen concentrations in , <br /> ground water.to promote biodegradation of hydrocarbons.'The wolurriesadded to each well are <br /> summarized on Table 1. <br /> Advanced CeoEnvironmental.Inc. <br />