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The spacing of the contour ditches were determined using RUBLES equations for sediment yield. <br />The furrows were spaced so that erosion will be less than 5 tons/acre/year once revegetation is <br />established, The actual calculations are contained in Addendum D. In addition to the contour ditches, <br />in select areas contour furrows will be constructed between the ditches. <br />General rill and gully repair, if needed, will be performed annually after the likelihood of heavy <br />cloudburst type rains has passed. Normally, these types of s[orms do not occur after October 1s~. <br />Interim repairs will be conducted within 60 days of rill and gully formation unless adverse ground <br />conditions would result in additional surface damage and erosion. In this case, repairs will be delayed <br />until the ground has dried sufficiently and/or growth has advanced to the point where repair activities <br />will not unduly harm new growth. <br />RN-04 685 Revised 01 /03 <br />