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<br />Allowance for C~ntingencies <br /> <br />The contingency factor was set at twenty percent due to the <br />nnknowns involved in latent cond:i.tions or subsurface W'lknowns. The <br />mountainous type terrain at Rico has abrupt changes in rock formations, <br />soil cover and water table. The short field season itself presents <br />an W'lknown factor as far as the potential of the builder to perform <br />the work ina single season. It is expected that the project will be <br />completed in one field season, but weather could certainlJ' delay its, <br />completion. <br />An inflation factor of ten percent was added to the cost estimate. <br />,This factor was derived from an estimated five percent per year for two' <br />years which is the estimated time for beginning of construction. <br /> <br />, <br /> <br />J <br /> <br />_ 40 _ <br />