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• 4.14.6 RILL AND GULLY PLAN. Continued <br />The spacing of the contour furrows were determined using RUBLES equations <br />for sediment yield. The furrows were spaced so that erosion will be less than 5 <br />tons/acre/year once revegetation is established. The actual calculations are contained <br />in Addendum D. <br />General rill and gully repair, if needed, will be performed annually after the <br />likelihood of heavy cloudburst type rains has passed. Normally, these types of storms <br />do not occur after October 1~'. Interim repairs will be conducted within 60 days of rill and <br />gully formation unless adverse ground conditions would result in additional surface <br />damage and erosion. In this case, repairs will be delayed until the ground has dried <br />sufficiently and/or growth has advanced to the point where repair activities will not <br />unduly harm new growth. <br />• <br />• <br />~~~11 <br />685 Revised 10/99 <br />