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<br /> <br /> <br />APPENDIX C <br /> <br />Laboratory Procedures and Test Results Laboratory testing provided quantitative and qualitative data involving the relevant engineering properties of the representative earth materials selected for testing. The representative samples were tested in general accordance with American Society for Testing and Materials (ASTM) procedures and/or California Test Methods (CTM). <br />Soil Classification: Earth materials encountered during exploration were classified and logged in general accordance with the Standard Practice for Description and Identification of Soils (Visual-Manual Procedure) of ASTM D 2488. Upon completion of laboratory testing, exploratory logs and sample descriptions were reconciled to reflect laboratory test results with regard to ASTM D 2487. <br />Grain Size Distribution: Select samples were tested using the guidelines of ASTM D 1140. The test results are presented in the table below. <br />SAMPLE LOCATION MATERIAL DESCRIPTION % PASSING # 200 SIEVE <br />B-1 @ 20 feet Sandy SILT 83 <br />B-1 @ 40 feet Silty SAND 43 <br />Moisture and Density Tests: For select samples moisture content was determined using the guidelines of ASTM D 2216 and dry density determinations were made using the guidelines of ASTM D 2937. These tests were performed on relatively undisturbed samples and the test results are presented on the exploratory logs. <br />Maximum Density Tests: The maximum dry density and optimum moisture content of representative samples were determined using the guidelines of ASTM D 1557. The test results are presented in the table below. <br />SAMPLE <br />LOCATION <br />MATERIAL <br />DESCRIPTION <br />MAXIMUM DRY <br />DENSITY (pcf) <br />OPTIMUM MOISTURE <br />CONTENT (%) B-1 @ 0-5 feet Silty SAND 131.0 8.5 <br /> <br />Expansion Index: The expansion potential of representative samples was evaluated using the guidelines of ASTM D 4829. The test results are presented in the table below. <br />SAMPLE <br />LOCATION <br />MATERIAL <br />DESCRIPTION EXPANSION INDEX EXPANSION POTENTIAL B-1 @ 0-5 feet Silty SAND 27 Low <br />2130 E 4th St <br />2/11/2025