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L <br /> SOIL SAMPLING WORK PLAN <br /> LCARGILL FEED PRODUCT FACILITY <br /> PORT ROAD NO. 8, STOCKTON, CALIFORNIA 95203 <br /> LSIERRA-PACIFIC PROJECT NO. 95-128.01 <br /> 1.0 INTRODUCTION AND BACKGROUND <br /> f Cargill, Inc. (Cargill) has authorized Sierra-Pacific Groundwater Consultants, Inc. (Sierra- <br /> Pacific) to conduct a soils investigation at their facility located at Port Road No. 8, Stockton, <br /> California (Figures 1 and 2). Cargill is responding to a request from the Central Valley <br /> Regional Water Quality Control Board (RWQCB) to investigate the site. <br /> The objective of the investigation is to delineate the extent of contamination and determine if <br /> feed products in soil have the potential to impact ground-water quality. Cattle feed products <br /> containing urea, ammonium polyphosphate, and other nitrogen-bearing agricultural chemical <br /> Lproducts are blended and processed at the facility. Molasses-based feed products contain <br /> nitrogen compounds which can degrade ground water quality if present in sufficient <br /> concentrations. <br /> L A preliminary site tour was conducted to determine sample locations. Discolored soils and <br /> staining were observed during the tour and indicate that feed products are present in the soil <br /> adjacent to, and perhaps beneath, some of the above ground tanks at the facility. Samples will <br /> L be obtained from these areas and areas of the property that are known or suspected to be <br /> problematic. <br /> L <br /> L <br /> LSierra-Pacific Groundwater Consultants, Inc. 1 <br /> L <br />