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kn <br /> File No. 20-1008-49.001 KLEINFELDER <br /> July 8, 1993 <br /> FIELD COMPACTION TEST RESULTS <br /> A total of 29 nuclear field density tests (designated 1 through 29) were performed on the test <br /> pad foundation layer and the test pads between April 16 and 28, 1993. Results of all tests were <br /> verbally reported to Mr. Gabriel Karam of San Joaquin County. In addition, a total of three <br /> sand cone density tests (designated SC-1 through SC-3) were also performed at the site on May <br /> 3 and 4, 1993. <br /> In-place density and moisture content for Test Numbers 1 through 29 were performed in <br /> general accordance with ASTM Test Methods D-2922 and D-3017, respectively (nuclear probe <br /> test method). In-place moisture contents for Test Numbers SC-1 through SC-3 were evaluated <br /> in general accordance with ASTM Test Method D-2216 (oven-dried test method). Sand cone <br /> density tests were performed in general accordance with ASTM Test Method D-1556. Holes <br /> in the test pad due to testing were backfilled with Ione clay. <br /> A summary of field density tests consisting of test designations and locations, in-place dry <br /> densities and moisture contents, laboratory-obtained maximum dry densities and optimum <br /> moisture content, and specified and achieved relative compaction is attached. Samples of the <br /> materials tests were returned to the laboratory for determination of the maximum density- <br /> optimum moisture content. The laboratory test results are shown on Table I. <br /> PERMEABIELrff TESTING <br /> On May 3, 1993, three block samples were acquired from the test pads for permeability tests. <br /> County personnel used a John Deer 310D backhoe equipped with 24-inch bucket to cut out the <br /> samples. After samples were acquired, test pad holes were backfilled with Ione clay. Samples <br /> were sealed in the field to prevent moisture loss, and were transported to our laboratory for <br /> testing. Laboratory permeability tests were performed in general accordance with ASTM D- <br /> 5084 test method. Results of these tests are presented below: <br /> Test Pad Sample Location Permeability <br /> SP/SM 25' S of 9.1 x 10' <br /> Center of Test Pad cm/sec <br /> SM Center of Test Pad 8.6 x 10' <br /> cm/sec <br /> ML Center of Test Pad 9.9 x 10$ <br /> cm/sec <br /> Copyright 1993 Kleinfelder, Inc. Page 4 of 7 <br />