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• Quarterly Report - Second Quarter 2003 <br /> Proposed EL DORADO APARTMENTS <br />' 2424 & 2450 South E1 Dorado Street, Stockton,California <br /> 1.0. INTRODUCTION <br />' At the request of Mr Dennis Kim, property owner, Advanced GeoEnvironrnental, Inc (AGE)has <br /> prepared this quarterly report for the properties located at 2424 and 2450 South El Dorado Street, <br /> Stockton, Califorma (the site) This report documents procedures and results for the advancement <br /> and sampling of one soil boring and monitoring and sampling of three ground water monitoring <br /> wells for the second quarter of 2003 The site and the surrounding area are illustrated in Figure 1 <br /> On-site structures and well locations are illustrated on Figure 2 <br /> 1 <br /> 2.0. BACKGROUND <br /> The subject properties are located on the south-central portion of the City of Stockton, San Joaquin <br /> County, north of the intersection of South El Dorado Street and California Street Land use of the <br /> i surrounding properties is recreational(McKinley Park),residential and commercial The subs ect site <br /> is the former location of a glass production facility,originally decommissioned sometime during the <br /> early 1970's Detailed back ground information for the site is included as Appendix A <br /> i � <br /> 3 0. PROCEDURES <br /> i On 12 May 2003, one soil boring was advanced and sampled at the site to determine the vertical <br /> y g p <br /> extent of petroleum hydrocarbon-impacted soil In addition,quarterly ground water monitoring and <br />' sampling was performed at the site Field work was performed in accordance with Central Valley <br /> Regional Water Quality Control Board (CVRWQCB) guidelines for the investigation of <br /> Iunderground storage tank (UST) sites <br />' 3 1 SOIL BORING ADVANCEMENT AND SAMPLING <br /> On 12 May 2003, one soil probe boring (PB-20) was advanced to a total depth of 45 feet below <br /> I surface grade(bsg)utilizing a van-mounted Geoprobe 5400 direct-push probing unit equipped with <br /> 1 25-inch diameter probing rods, the probing unit advances soil probe borings using a hydraulic <br /> hammer to drive soil sampling tools to specified depths The boring was advanced in the former UST <br /> excavation <br /> Discrete soil samples were collected using the Geoprobe push-driven 2-inch diameter soil sampler <br /> fitted with four six-inch long brass sleeves at 5-foot intervals, beginning at 25 feet bsg <br /> lie To preserve each collected sample, both ends of the leading or other selected sleeve were covered <br /> Advanced GeoEnvironmental,Inc <br /> I <br />