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~~p~~ <br />decontaminated by brushing with a steel brush to remove adhered solids, anc <br />washing the shovel with a brush and a solution of Alconox (a non-phosphate <br />laboratory grade detergent). The shovel was then rinsed with deionized water <br />and air dried prior to collecting the next sample. <br />A CKD sample (BG-1) was collected from the CKD previously disposed in C- Pit. <br />The limestone (BG-2) and 3rd Ridge Shale (BG-3) samples were collected from <br />the raw material stockpiles located south of the plant near C-Pit. The kiln feed <br />sample (BG-4) was obtained from inside the cement plant. An upgradient <br />background soil sample (BG-5) was collected from Loukenon's pasture located <br />west of U. S. Highway 36. A sample of the roadbed material (BG-6) along North <br />59th Street was also collected. This sample location is situated about 8,500 feet <br />downgradient (southeast) of C-Pit. Figure 1 shows the solid sample locations. <br />Water samples were also collected from A-Pit and the deep Dakota well (BG- <br />1 D). Figure 1 shows the water sample locations. These samples were collected <br />and placed into pre-cleaned bottles provided by the analytical laboratory. Each <br />bottle was labeled with the sample number, date and time, and sampler name at <br />the sampling site. The samples were placed into an ice cooler with blue ice and <br />maintained at approximately 4 degrees Centigrade (°C) until delivery to the <br />analytical laboratory. Both the solid and water samples were maintained under <br />chain-of-custody until delivered to the analytical laboratory. The chain-of-custody <br />procedures were followed to establish a written record of sample handling <br />between the sample site and the laboratory. <br />The deep Dakota Well sample was collected from a well located about 6,000 feel <br />southeast of C-Pit. The well is completed at a depth of about 1,130 feet in the <br />Dakota sandstone. The well is artesian and is free flowing at the well head. The <br />sample of the well water was collected from a plastic hose connected to the well <br />head. Measurements of pH, temperature, and redox potential were performed at <br />the wellhead until consistent, stable values were obtained. After the field <br />measurements had stabilized the water sample was collected. An A-Pit water <br />sample was collected along the western shore of the reservoir. Measurements of <br />pH, temperature, and redox potential were also made at this sample location. A- <br />Pit samples were collected by Bentley submersing the sample bottles in the pit <br />and capping the bottles while submersed. <br />4.2 Laboratory Analyses and Laboratory Quality Assurance/Quality Control <br />Q( A/QCl <br />4.2.1 Analyses Performed and Analytical Methods <br />The solid and water samples were hand-delivered on Thursday April 8, 1999 by <br />Grant Environmental, Inc. to Barringer Laboratories Inc. (Barringer) in Gofden, <br />Colorado for analysis. The required analyses were specified in a letter <br />