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I I I I I I I I I I I I I I I I I I I less energetic delivery system. However, significant salt and sediment yield occurs due to storm events on Pinto Wash because there is no flood zone within pinto Wash. The estimated sediment delivery ratio for Pinto Wash is 80% and the estimated salt delivery ratio is 80%. The estimated salt delivery ratio is high ~ because the salt-bearing sediment particles and salt crystals are r~ subjected to a highly energetic mechanical breakdown during ~ transport which renders the salt highly susceptible to ~ solutioning. Nash Wash: Nash Wash is approximately 1200 feet higher in upper watershed elevation than Sagers Wash. The canyon is the biggest in the watershed and rises in the Roan Cliffs. Nash Canyon is subject to frequent high flows and is an efficient delivery system for sediment and salt. The estimated sediment delivery ratio for Nash Wash is 80% and the estimated salt delivery ratio is 80% for the same reasons as stated for Pinto Wash. RANGELANDS: The rangeland community types within the Sagers Wash project area encompass the same broad vegetation zones that are discussed in the Grand Resource Area Management Plan Environmental Impact Statement (1983). For the purpose of this evaluation delineations of the geomorphic units are broader in scope than the listing of ecological units as shown in Appendix J in the EIS, ie, any of the eight geomorphic units will include a number of ecological sites, and because of their breadth, some duplication will occur. In general, the range site or ecological site descriptions should be reviewed before any project work is planned. Appendix II, Ecological site and Community Types, contains a listing of ecological site and community types present in the study area (taken from Appendix J, Grand Resource Area EIS, 1983). Rangeland conditions for the geomorphic units of this report are as follows: UNIT 1 - Pinion-Juniper Sagebrush Terrace - This unit incorporates some of the P-J ecological sites and some of the sagebrush ecological sites as described in Appendix J. The pinion-Juniper Sagebrush Terrace occupies 3,548 acres and ranges in elevation from about 5000 feet to about 6400 feet. Precipitation varies from about 11 to 18 inches annually. The potential for vegetation type conversion and productivity improvement in the pinion-Juniper-Sage Terraces are illustrated by the presence of three-crested wheatgrass seedings in the vegetation zones. The ecological sites encompassed in this zone include the Semi-Desert Stony Loam, Semi-desert Shallow Loam, Upland Shallow Loam and the Semi-Desert Loam. This zone can be productive, yielding forage for domestic livestock and wildlife. Some recommended treatment measures include, leavinq the hilltops untreated, and disturbing the surface flow paths to slow the movement of water or sediment. During chaining or reseedings, any debris should be left in 6