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tS <br /> Quarterly Report - Second Quarter 2003 <br /> Proposed EL DORADO APARTMENTS <br />' 2450 South E1 Dorado Street, Stockton, California <br />' 1.0 INTRODUCTION <br />' At the request of Mr Dennis Kim, property owner, Advanced GeoEnvironmental, Inc (AGE) has <br /> prepared this quarterly report for the property located at 2450 South El Dorado Street, Stockton, <br /> California(the site) This report documents procedures and results for the advancement and sampling <br />' of one soil boring and monitoring and sampling of three ground water monitoring wells for the <br /> second quarter of 2003 The site and the surrounding area are illustrated in Figure 1 On-site <br /> structures and well locations are illustrated on Figure 2 <br /> I <br /> 2.0. BACKGROUND <br /> The subject property is 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 />' surrounding properties is recreational(McKinley Park),residential and commercial The Subject 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 />' 3.0 PROCEDURES <br /> On 12 May 2003, one soil boring was advanced and sampled at the site to determine the vertical <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 /> underground 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 /> ID surface grade(bsg)utilizing a van-mounted_Geopzobe 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 /> lexcavation <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 /> • <br /> Advanced GeoEnvironmental,Inc <br />