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Please refer back to adequacy concerns identified by the Division in a letter dated February 18, 1993. Division guidelines on seeding rates are based on information received from the Natural Resource Conservation Service (NRCS-formerly SCS) and Bureau of Land Management.Please recalculate the seed mix to provide for a range of 20-40 P.L.S /square foot. If OEI is unsure of how to calculate this, please contact the Division or the local NRCS office for assistance. b) The Division is concerned that Oakridge Energy Inc. may have difficulty achieving their approved revegetation diversity standard with the proposed seed mix. The revegetation diversity standard for the mountain shrub and pinon- juniper community requires establishment of; "2 Warm season grasses 2 Cool season grasses 1 perennial forg with each contributing at least 3% relative cover but not greater than 40% relative cover" While the Division is not opposed with the weighting of the seedmix to warm season grasses, our concern lies in the extreme weighting of the seedmix to all grass species (warm and cool season). Having observed reclaimed areas seeded heavily to grass species, the Division commonly sees stands heavily dominated by grasses often to the exclusion of the required forb and shrub species. OEI proposes to strip seed the forbs and shrubs separately from the grasses, which should help reduce the competition from the grasses. The seed mix in Table 5-6 is heavily weighted to grass species. A slight increase in the proposed forb seeding rates offset by a slight reduction in the grass species rate may aid OEI in achieving the approved reclamation standard. Additionally, the seedmix proposed in the 12/10/92 revision dropped the seed rates for the two Nitrogen-fixing species, Cicer milkvetch and Utah sweetvetch. Please include these two species in the seed mix as previously proposed. 12. Reclamation success standards on permit pages 5-33 are not in agreement. a) Page 5-33 states that, " ... after the woody plant density has been determined by the revegetation study conducted in 1983. Oakridge will request a density reduction from the Division as it applies to future work." Page 5-34 states the "Wood[sic] plant density shall be a minimum of 1000 stems per acre." Please eliminate the comments on page 5-33 regarding determining the density after the 1983 revegetation study, and requesting a density reduction.. b) On page 5-34 Oakridge Energy clearly states what the revegetation standards will be. In the next paragraph the standards are repeated with an omission of warm season grasses in the diversity standard. Please revise this page to eliminate the second reiteration of the reclamation standards. c) On this same page, 5-34, The Cropland production standard states that 21 bushels of grain per acre shall be the historical standard. The preceding page, 5- 33, states that the cropland reclamation standard shall be 19.5 bushels of wheat Midterm Revi e~ - Chinney Rock Mine 5 October 1995