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1 TreadWell&Wlo <br /> SOIL AND GROUNDWATER REMEDIATION REPORT <br /> 424 NORTH VAN BUREN STREET (AREA 16) <br /> 1 Stockton, California <br /> 1.0 INTRODUCTION <br /> This report documents the soil and groundwater remediation work performed at the Chase West <br /> Site (Area 16) at 424 North Van Buren Street in Stockton, California (Figure 1) The City of <br /> 1 Stockton (City) owns the Site, and Treadwell & Rollo was retained by the City to conduct the <br /> remediation work <br /> The objective of this remediation was to remove soil and groundwater with high concentrations <br /> of petroleum hydrocarbons at the former underground storage tank (UST) location During April <br /> and May 2004 the soil remediation was conducted in conformance with the 7 April 2004 <br /> workplan titled Soil and Groundwater Investigation Results and Remediation Workplan, Chase <br /> West, Area 16, 424 North Van Buren Street, Stockton, California (Treadwell & Rollo 2004a) <br />' (2004 Workplan), which was approved in a 14 April 2004 letter prepared by the San Joaquin <br /> County Environmental Health Department (SJCEHD 2004b) The approval letter is included in <br />' Appendix A <br /> This report presents the following <br /> 1 Findings regarding previous site uses and investigations, <br /> 2 Soil and groundwater remediation methodologies, <br /> 3 Sampling and laboratory analytical methods used our subsurface investigations, and <br /> 4 Sampling results <br /> 2.0 SITE DESCRIPTION AND PREVIOUS INVESTIGATIONS <br /> jThe Site is part of the Banner Island Redevelopment Project, which includes the area north of the <br /> . Stockton Channel bounded by North Lincoln Street to the west, West Fremont Street to the north <br /> and Commerce Street to the east (Figure 1) Environmental issues associated with the Banner <br /> r <br />