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drilled with continuous -flight, hollow -stem auger equipment to depths <br />of 50-1/2 and 40-1/2 feet, respectively. Disturbed and undisturbed <br />soil samples were collected from these borings and permeability test <br />wells (permeameters) were installed in each. <br />Boring P-1, located in the northern portion of the site, penetrated <br />interlayered silts, clays, silty sands, and clayey sands to a depth of <br />25 feet. Below 25 feet, the boring encountered poorly to well -graded, <br />dense clean sands. Such a thick deposit of clean sand is atypical for <br />the site and was not discovered in any other borings on site. <br />Boring P-2, located in the southern section of the site, penetrated <br />interlayered silts and sandy silts, as well as very dense sands and <br />silty sands to the entire depth. Thicknesses of layers ranged from <br />1-1/2 to 5 feet. Boring P-3 was drilled to explore intermediate <br />depths and encountered primarily fine-grained soil to its total depth <br />of 89 feet. <br />Deep Barings G-1, and G-2, and G-3 were drilled to obtain samples of <br />ground water beneath the proposed landfill site and to characterize <br />the intervening materials. Boring G-1 was drilled with air -rotary <br />drilling equipment and extended to a total depth of 166-1/2 feet, <br />encountering ground water at a depth of approximately 150 feet. <br />Intervening deposits consisted of heterogenous interlaying silt, clay, <br />and sand. Finer -grained deposits predominated (see Drawing 2). <br />Boring G-2 was drilled with mud -rotary rather than air -rotary drilling <br />equipment due to borehole stability problems. The boring extended to <br />a total depth of 156-1/2 feet, encountering ground water at a depth of <br />approximately 148 feet. The boring encountered primarily fine-grained <br />soil in the upper 40 feet, sandy soils below 80 feet, and predominant- <br />ly sandy clays and silty sands, with several gravelly layers, below <br />101 feet (see Drawing 2 and Appendix A). <br />PJ9 9390206.00D 7 <br />