ARCHIVED REPORTS XR0007478 - Laserfiche WebLink

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' 1.0 INTRODUCTION This report is being submitting on behalf of C M Weber Enterprises, Inc to present the soil closure workplan at the facility located at 141 North El Dorado Street in Stockton, California (Figure 1) This workplan discusses site background, hydrologic setting, soil boring locations, ' sampling procedures and protocol, laboratory analyses, and data transmittal ' The protect site is the proposed future location of a fourteen story budding which will be a mayor impetus for the continued revitalization of downtown Stockton While groundwater ' contamination has also been identified at the site, and is undergoing investigation and remediation, C M Weber Enterprises, Inc is requesting that the soil and groundwater ' remediations be bifurcated It is anticipated that transfer of ownership of the property will take place upon completion of soil remediation of the site, C M Weber will continue groundwater ' remediation after transfer Consequently, it is requested that a closure letter be issued upon completion of the soil remediation in the manner followed by the Department of Toxic Substances Control in Management Memo No 92-4 which is attached for your information (Attachment I) 2.0 SITE BACKGROUND ' In 1955, Shell Oil Company constructed a retail gasoline and service facility on the southwest corner of El Dorado and Channel streets in Stockton (Figure 2) Five underground storage tanks were located on the property The station discontinued selling gasoline in 1981 and the product storage tanks were removed ' 3.0 HYDROGEOLOGIC SETTING The site lies in the eastern portion of the Sacramento - San Joaquin Delta The subsurface geology in the Stockton area is characterized by Pleistocene and Recent alluvial deposits These alluvial deposits consist of heterogeneous sequences of sands and gravels originating from active stream channels, and silts and clays originating from overbank and marsh depositional environments R070792 TLP 1