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Soil Boring Installa On May 10 and 11, 1999, three soil borings were installed at the proposed 1 site for the George teVelde dairy facility (Figure ???). The purpose of thi work was to evaluate the suitability of the subsurface soils for use as low ful permeability lining materials in the proposed lagoons and settling ponds at the site. All soil borings were drilled by Frontier Drilling of Turlock, California, a contractor licensed in the State of California to conduct such activities. The work was conducted under the direct supervision of AGS personnel who logged and collected the samples for analysis. The borings were advanced using six inch outside diameter, continuous flight, solid-stem augers. During drilling, the project geologist logged all drive samples and cuttings continuously using the Unified Soil Classification System. Soil boring logs are contained within Appendix B. Each soil boring was advanced to depth ranging from 31 to 51 feet below the ground surface. Ground water was not encountered in any of the soil borings. After completion, all soil borings were backfilled with a neat cement slurry to existing grade and covered with native soil. Soil Sample Collection Soil samples were collected in a two-inch diameter California modified split-spoon sampler at intervals of five feet unless sample tool refusal was encountered. The sampler was driven in advance of the augers to collect relatively undisturbed samples for logging and possible laboratory analysis. Blow counts were recorded for each six inch interval. Refusal was reached if a total of fifty blow counts were required to drive the sampling tool six inches. Sampling for that interval was then suspended and drilling was resumed. Soil samples from the split spoon were collected in clean brass or stainless E steel sampling tubes. Once retrieved from the split spoon, liner ends were covered with plastic end caps to inhibit the escape of water vapor. All soil samples collected for laboratory analysis were labeled with the location, date and time, and immediately placed into a cooler chilled to 4° Celsius and containing "blue ice" coolant. All sampling information was recorded on the boring log forms. All soil samples were described in the field by the site geologist. Field observations noting sediment type, color, grain size, sorting, hardness, texture, clay content, moisture content, visible evidence of contamination, odor, and any other information important to the investigation were recorded in the field on appropriate log forms by the site geologist. 23