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surface stoniness <br />The sampling site location and number were plotted on the field map as accurately as possible. <br />One 2 -quart sample was taken to represent each natural soil horizon or contrasting layer within the <br />depth to 72 inches or bedrock, whichever was shallower. <br />Samples were collected from hand -dug pits, three -inch diameter auger holes or backhoe trenches <br />that were dug at all soil sampled sites. The sampled soil material was placed in clean, labeled, <br />polyethylene plastic or Tyvek® bags, and was kept cool and as dry as possible to limit chemical <br />changes. The upper horizons of many profiles were moist upon sampling and were air dried prior <br />to shipment to IML in Sheridan, Wyoming (1988) or Colorado State University (1996 and 1998) for <br />analysis. Each sample was split at the laboratory with one portion being used for analysis and the <br />archival portion retained for additional tests, if necessary. The analysis of the samples is shown in <br />Attachment 2.04.9 -8. <br />August 2013 (PR 08) 2.04.9 -13 <br />