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vr� ' <br /> . <br /> Mr. ,Harry Mossberger _2_ <br /> 22 August 1989 <br /> ground surface and the bottom soil sample was collected from just above <br /> the water table. The depth for other soil borings is dependent on site <br /> conditions. <br /> 5. One verification sample per 1600 square feet may or may not be adequate. <br /> The adequacy of verification sampling will be determined based on the <br /> results of the soil assessment and the chosen closure alternative. <br /> 6. I concur that the number of geotechnical tests to be performed on the <br /> cap/liner should be specified for a given volume of soil which is then <br /> placed in lifts over a given area. Based on field experience borrow <br /> material is commonly specified for testing on a per volume basis, but once <br /> a material has been placed, the frequency of tests are commonly specified <br /> on a per acre (area)/per lift (thickness) basis, which also is <br /> representative of volume. <br /> If you have any questions, please call me at (916) 361-5739. <br /> v4anze4' rl l�m� <br /> CAMILLA WILLIAMS <br /> Engineering Geologist <br /> CKW:ava <br /> cc: Mr. Jeff Scott, Environmental Protection Agency, Region IX, San Francisco <br /> Mr. Frank Dellechaie, Department of Health Services, Sacramento <br /> --(1s. Diane Hinson, Public Health Services of San Joaquin County, <br /> Environmental Health Department, Stockton <br /> Mr. William Olive, Kearney-National , Atlanta, Georgia <br /> Mr. Peter Quinlan, Hargis and Associates, La Jolla <br /> Mr. Terry Turner, Hargis and Associates, Mesa, Arizona <br /> Mr. Derrick Peterson, Bryan, Cave McPheeters and McRoberts, Washington, <br /> D.C. <br /> Mr. Reed Sato, Downey, Brand, Seymour and Rohwer, Sacramento <br />