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1 <br />' Wednesday, Apri17, 1999. The CKD and other solid materials were collected <br />using a decontaminated shovel, placed into pre-cleaned five-gallon plastic <br />' buckets, and capped with plastic lids. The plastic buckets were labeled with the <br />sample number, sample name, and date of collection. <br />In order to collect representative samples, a composite sample was prepared of <br />each solid material by collecting the sample from several different locations at <br />each sample site. The sampling shovel was decontaminated between samples to <br />prevent cross-contamination of subsequent samples. The shovel was <br />decontaminated by brushing with a steel brush to remove adhered solids, and <br />washing the shovel with a brush and a solution of Alconox (a non-phosphate <br />t 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-ti) 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 /> . <br /> The deep Dakota Well sample was collected from a well located about 6,000 feet <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 />L <br />