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File No. 20-1008-36 KLEINFELDER July 14, 1995 Samples were sealed in the field to prevent moisture loss and were transported to our laboratory for testing. Laboratory permeability tests were performed in general accordance with ASTM D- 5084 test method. Results of these tests are presented below: Sample Location Permeability Test Pad 1, center, at-0.5' 4.2 x W cm/sec Test Pad 2, north end, at-0.5' 1.5 x le cm/sec Test Pad 2, south end, at-0.5' 4.3 x 1F cm/sec Test Pad 3, north end, at-0.5' 3.3 x 1F cm/sec Test Pad 3, south end, at-0.5' 3.0 x 10 cm/sec Test Pad 4, center, at-0.5' 4.4 x 10 cm/sec Test Pad 5, east end, at-0.5' 1.4 x 10-6cm/sec Test Pad 5, west end, at-0.5' 8.5 x 0 cm/sec TRQA TM TEST neral Three sealed double-ring infiltrometer (SDRI) were utilized for in situ permeability testing of the newly-placed test pads. The SDRI apparatus and test procedures were in general accordance with those described by David Daniel and Steven Trautwein in their paper "Field Permeability Tests for Earthen Liners," S.P. Clemence, et., 1986, Use of In Situ Tests in Geotechnical Engineering, pp. 146-160. Equipment The SDRI used for our testing program consisted of two rings fabricated from heavy plastic and fiberglass. The inner ring is 24 inches in diameter, 1/4-inch thick, domed, and approximately 8 inches high. The outer ring is 72 inches in diameter, approximately 34 inches high, and sealed to reduce evaporation. During the test, the applied head in the outer and inner rings was kept constant and identical to minimize the hydraulic head trending to drive flow between the inner and outer rings. Additionally, by loping the water levels constant, the tendency for the inner ring to expand or contract with time was minimized and enhanced one-dimension infiltration flow (vertical) from the inner ring. The SDRI equipment used for our testing program is shown schematically on Plate 6. GSM.md CH195 Page 5 of 10 July 14, 1995 20-1008-36 ©1995,Kleinfelder,Inc.