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APPENDIX B LABORATORY TESTING <br />Expansion lndex <br />Expansion lndex test was conducted on the existing onsite near surface materials sampled during field <br />investigation. The test is performed in accordance with ASTM D-4829. The testing results are presented <br />below: <br />Corrosion Potential <br />Chemical laboratory test were conducted on the existing onsite near surface materials. The rests are <br />performed in accordance with California Test Method 417, 422,532 and 643. The resting results are <br />shown in table below: <br />Note: N/R= Not Requested <br />Sample Location Dry Density <br />( pcf) <br />Moisture <br />content (%) <br />Expansion <br />lndex <br />Classification <br />BH-1 @ 2.0'114 B Zero Very Low <br />Sample Location PH Sulfate Content <br />(% by Weiqht) <br />Min. Resistivity <br />(ohm-cm) <br />Chloride <br />Content (ppm) <br />BH-1 @ 0'to 2'7.3 0.0198 '1 ,894 4B <br />Page 17