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PTS Laboratories, Inc. Environmental Audit <br /> PTS File No 30515 <br />' PARTICLE SIZE SUMMARY <br /> (METHODOLOGY ASTM D422) <br /> IROJECT NAME Montgomery Ward Unocal <br /> PROJECT NO 1232 <br /> 1 <br /> Description Median Particle Size Distribution, wt percent <br /> Depth, USCS/ASTM Grain Size, Gravel Sand Size Silt/Clay <br /> Sample ID fk {1) mm Coarse Medium Fine <br /> Weil-1 202-206 NIA Fine sand 0 232 000 053 1980 7412 655 <br /> Well-1 242-259 NIA Medium sand 0 608 067 330 6716 2307 580 <br /> Well-1 265-280 NIA Medium sand 0 481 000 409 5260 3331 999 <br /> 1 Well-1 339-371 NIA Medium sand 1 877 1 06 4635 3766 1258 235 <br /> i <br /> M <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 - <br /> • <br /> 1 <br /> (1) based on Mean fromTrask <br /> 1 <br />