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• This test excavation-determination of significance <br />should accomplish several goals. The first is to determine <br />if subsurface deposits are or are not significant. The " <br />seccrd, and corollary, goal is the location and isolation of <br />discrete cultural units within the site. The attainment of <br />these goals Leads directly to the third. If the cultural <br />deposits are determined to be significant, the information <br />produced by attaining the first two goals should assist in <br />the construction of an appropriate research design-excavation <br />plan to adequately mitigate the adverse impact of mining <br />activity. <br />SRT142 (Map-7, Table 4) <br />Though a Large amount of material is not apparent on <br />the surface of this site, all of the disccvered material <br />is the result of erosional situations. The site is located <br />on born sides of an ephemeral drainage. Furthermore, the <br />• varied activities indicated by discovered material indicate <br />that this is a habitation site. Since this site is within <br />the maximum grading disturbance Line, and will receive direct <br />impact, testing Co determine the provenience of, and form <br />of buried material is recommended. The necessity of further <br />work should be determined on the basis of testing results. <br />It is further recommended that testing to determine <br />if significant subsurface deposits exist take the form cf <br />the excavation of four one-by-one meter test pits, after sur- <br />face mapping and cleaning arroyo walls to examine subsurface <br />deposits. Two pits should be placed on each side of the arroyo <br />and excavated to a depth aE Least equal to the depth of the <br />arroyo. If subsurface material is recovered, an assessment <br />of significance can be made, and if necessary, subsequent <br />mitigation plans can be based on testing results. <br />SRT145 (Map 8, Table 4) <br />• The Low density of artifactual material and Lack of <br />evidence of buried cultural material indicate there is a <br />31 <br />