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Colowyo, C1981-019, PR3 adequacy No. 2 24 April 22, 2011 <br />4.15.1 Revegetation General Requirements <br />1. Page 27, Use of Introduced Species - In the second exception for use of introduced species, it <br />is stated "prior to the use of aggressive taxa to combat areas that are highly susceptible to <br />erosion, an MR or TR will be obtained from CDRMS to address such circumstances." <br />Aggressive is a subjective term that is not well defined as it applies to introduced or native <br />species. For better clarification as to when the Division will be contacted with discretionary <br />use of introduced species, change `aggressive taxa' to `introduced species.' <br />This item has been adequately resolved. <br />2. Pages 30 and 31, bullet h -Please include a timeline as to when the "elk proof' fencing will be <br />erected around the perimeter of the trial area to protect it from ungulates. <br />This item has been adequately resolved. <br />3. Pages 30 and 31, bullet i - In the event of a stand failure in the field trial areas, the Division <br />agrees with Colowyo that the area will revert back to sagebrush steppe for the purposes of <br />Phase III bond release. The requirement that 50% of the 375 shrubs will be sagebrush <br />however, needs to be maintained for wildlife and sage grouse habitat. The Division feels that <br />this low standard is achievable due to the fact that sagebrush will be seeded between the <br />planted rows. Please rephrase this sentence so this standard will be maintained rather than <br />"dropped." <br />Pages 30 and 31, bullet i - In the event of a stand failure in the field trial areas, the Division <br />agrees with Colowyo that the area will revert back to sagebrush steppe for the purposes of <br />Phase III bond release. These 2-one acre areas will be counted within the entire sagebrush <br />steppe community and there is not a need for them to have their own separate standards. Please <br />amend bullet 1 i) and 2i) in the Field Trials section by removing "with the exception that the <br />requirement for 50% of the required 375 shrubs in this area be big sagebrush, this requirement <br />will be reasonably dropped." Removing this part of the sentence will prevent confusion and <br />not require these areas to be individually sampled, meet sample adequacy and be compared to <br />the reference areas by a separate set of standards at bond release. <br />4. Page 31 - The diagram illustrates that the planting arrangements and density for containerized <br />plant stock is 550 plants/acre. The planned area is shown to be 220 feet by 220 feet or 48,400 <br />ft2. An acre is actually 43,560 ft2, -10% less than the diagram illustrates. This difference in <br />square footage lowers the actual stem count per acre resulting in a perceived mortality rate. <br />Please adjust the planting densities to 43,560 ft2 per acre to reflect this difference. <br />This item has been adequately resolved. <br />4.15.7 Determining Revegetation Success: General Requirements and Standards