ARCHIVED REPORTS_1995 - Laserfiche WebLink

Home Browse Search

File No. 20-1008-49 KLEINFELDER December 22, 1994 In-place density and moisture content for Test Numbers 1 through 703 were performed in general accordance with ASTM Test Methods D-2922 and D-3017, respectively (nuclear probe test method). In-place moisture contents for Test Numbers SC-1 through SC-39 were evaluated in general accordance with ASTM Test Method D-2216 (oven-dried test method). The sand cone density tests were performed in general accordance with ASTM Test Method D-1556. Holes in the barrier layer due to testing were backfilled with commercially available powder form bentonite clay. A summary of field density tests consisting of test designations and locations, in-place dry densities and moisture contents, laboratory-obtained maximum dry densities and optimum moisture content, and specified and achieved relative compaction is shown on Table VII, attached. Random bulk samples of the foundation and barrier materials tested were acquired in the field, sealed, and brought to our laboratory for determination of the maximum density- optimum moisture content in general accordance with ASTM Test Method D-1557 "A". Sample frequency was in general accordance with the CQA plan. Laboratory compaction curves are presented on Plates 5 through 54 and are summarized in Table VI. Compaction curves for samples 1 through 3 are presented in the second test pad report, Appendix A. PE ABILITY TESTING Thirty block samples were acquired from the barrier layer after compaction requirements were 1p achieved for permeability tests. Teichert personnel used a John Deer 310D backhoe equipped with 24-inch bucket or hand tools to cut out the block samples. After samples were acquired, barrier layer holes were backfilled with Ione clay and properly compacted. Samples were sealed in the field to prevent moisture loss and were transported to our laboratory for hand carving and testing. Laboratory permeability tests were performed in general accordance with ASTM D-5084 test method. Sample Nos. 1 through 8 were performed on the secondary site; 9 through 28 on the primary site; and 29 and 30 on the primary sideslopes. Test locations are shown graphically on Plates 1 and 2. Results of these tests and their respective locations in northings and eastings are presented on Table V below: TABLE V BARRIER LAYER PERMEABILITIES Permeability No. Northing Easting k (cm/sec) 1 1150 1340 8.9x 10 2 1625 1340 1.7x10$ 3 2100 1340 7.9x10' Copyright 1994 Kleinfelder,Inc. Page 9 of 12