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2701 Prosp rk Drive <br /> Suite 100 <br /> Rancho Cor CA 95670-6025 <br /> Tel:(916)444-0123 <br /> FIc(916)635-8805 <br /> R 0 W N AND November 10, 2000 NOV j 3 2000 <br /> ENVIRONMENT HEALTH <br /> Ms.Margaret Lagorio PERMIT/SERVICES <br /> Environmental Engineering&Consulting San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Avenue,Third Floor <br /> Stockton,California 95202 012-20587-001/1 <br /> Subject: Environmental Assessment Workplan for Pellegri Farm <br /> Dear Ms.Lagorio: <br /> This letter workplan was prepared to assess the condition of groundwater in an area where raw <br /> uncured tile material and reject roof tiles were used for fill material at Pellegri Farm (Site). The <br /> raw tile material and the reject tiles were transported from the MonierLifetile French Camp <br /> factory to Pellegri Fames, located at 21606 El Rancho Road, San Joaquin County, California <br /> (Figure 1). <br /> Background <br /> During several months in 1999, waste tile material composed of uncured raw materials <br /> (sand/cement and water mixture) was transported from the Monierl-ifetile French Camp <br /> factory to a pasture at the Site. The waste the was used as fill, creating a relatively flat pad <br /> covering approximately 1.5 acres. In addition to the fill material, a stockpile (estimated at less <br /> than 100 cubic yards) of reject tiles is present at another area of the farm. <br /> During the tile manufacturing process,the tile molds are coated with a small amount of a tnold- <br /> releasing agent composed predominantly of petroleum hydrocarbons with up to 5% fatty acids. <br /> Based on previous testing, both the uncured fill material and reject tile contains petroleum <br /> hydrocarbons due to the mold-releasing agent. Sampling of the fill in January 2000 indicated <br /> the presence of petroleum hydrocarbons,primarily in the diesel fuel range, at concentrations up <br /> to 3,510 mg/kg. <br /> Objectives <br /> The objective of the proposed work is to assess groundwater conditions in the area of the fill <br /> material at the Site with the installation of five groundwater monitor wells. Monitor wells will <br /> be used to assess shallow groundwater quality,the depth and direction of shallow groundwater <br /> flow, and assess if groundwater has been adversely affected by the placement of uncured fill <br /> material in the 1.5-acre pad area. <br /> Scope of Work <br /> The following sections describe the proposed groundwater assessment at the Site. <br /> P:\20000\20587\W KPLNweUs 1.do c <br />