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No, 200 Wash Sicve <br />A quantitative determination ofthe percentage ofsoil finer than 0.075 mm was performed on <br />selected soil samples by washing the soil through the No. 200 sieve. Test procedures were <br />performed in accordance with ASTM Method Dl 140. The results of the tests are shown on the <br />boring log. <br />Atterberg Limits <br />Liquid limit. plastic limit. and plasticity index were determined for selected soil samples in <br />accordance with ASTM D 4318. The soil sample was air-dried and passed through a No. 40 <br />sieve and moisturized. The liquid and plastic limit tests were performed on the fraction passing <br />the No. 40 sieve. Results ofthe Atterberg limits tests are shown graphically and presented in <br />this Appendix. <br />Corrosion Potential <br />Corrosion was tested on the selected soil sample in the near surface to determine the corrosivity <br />ofthe site soil to steel and concrete. The soil samples were tested for soluble sulfate (Caltrans <br />417), soluble chloride (Caltrans 422), and pH and minimum resistivity (Caltrans 643). The <br />results of corrosion tests are summarized in Table B- I . <br />TABLE B-l (Corrosion Test Results) <br />Boring <br />No. <br />Depth <br />(fr) <br />Chloride <br />Content <br />(Calif.422) <br />ppm <br />Sulfate Content <br />(Calif.4l7) <br />7o by Weight <br />pH <br />(Calif.643) <br />Resistivilv <br />(Calif.643) <br />Ohm *cm <br />B-l 0-l 75 0.0 I .19 7.2.|.429 <br />B-2