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k <br /> f <br /> Findings- <br /> Soil Profile <br /> Although there are four wells located on the property, there are no driller's or <br /> geologist's logs for these borings. Three of these wells are drilled wells and <br /> are reputed to be approximately 200 feet deep. Two are reported to be 12 to <br /> 14 inches in diameter and the third, four to six inches. The fourth well is <br /> hand dug and of unknown depth. <br /> The most distinctive and consistent feature of the soil profile at the site is the <br /> presence of a resistant hardpan layer near the surface of the ground. This unit <br /> was encountered in all three borings and is well exposed along the wall of a <br /> drainage canal which runs along the eastern boundary of the site. The <br /> hardpan layer ranges from 1.5 to 3.5 feet in thickness and is composed of <br /> calcite-cemented sand and silt. This layer is generally at or near the surface <br /> of the ground, but was encountered at a depth of three feet in boring TV-1. <br /> Boring TV-1, located at the irrigation pond site, was drilled to a depth of 35.8 <br /> i feet. The soil section in TV-1 was dominated by silt and clayey silt with six <br /> inch to one foot-thick lenses of moderately well-sorted sand. Samples <br /> collected from the bottom of the boring contained 26% clay and had a <br /> hydraulic conductivity of 4.2-6 cm/sec. <br /> Boring TV-2, located at the flush lagoon site, was completed at a depth of <br /> 51.0 feet below the ground surface. In TV-2 the soil profile consisted <br /> primarily of clay and silt. A silt layer was encountered from 38 to 44 feet, <br /> grading into a loose sand layer down to approximately 48 feet. At the bottom <br /> of the hole, a good clay layer was encountered. This clay was composed of <br /> 50% clay-sized particles and had a hydraulic conductivity of 9.9-8 cm/sec. <br /> Boring TV-3, located at the site of the settling ponds, penetrated to a depth of <br /> 31.0 feet. In TV-3 the soil was composed of sandy and silty sediments down <br /> to a depth of approximately 28 feet. Below this depth a sandy clay was <br /> encountered that was composed of 22 percent clay. The hydraulic <br /> conductivity of this unit was 1.2-6 cm/sec. <br /> The locations of the borings can be referenced at appendix V A. <br /> A tabulation of soil textures and hydraulic conductivity's determined for the <br /> samples collected from the three boring at the teVelde site are reported in <br /> Table 1., page 26. <br /> 25 <br /> I <br />