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10. The regulations pertaining to levels of statistical certainty have been <br />revised. Rule 4.15.7(2)(c) notes that statistical tests "must provide <br />results valid at the 90 percent confidence level, using a one-sided test <br />with a 0.10 alpha error probability." Rule 4.15.8(7) states, ~ <br />Establishment of woody plants on the revegetated area shall be <br />considered acceptable if the density or other applicable parameter is not <br />less than 90 percent of the approved reference area or standard with <br />90 percent statistical confidence." WFC should revise the permit <br />application to reflect current regulations. <br /> k ~ <br />°~ <br />11. ~ <br />Ina communication dated February 2, 1982 from David Stout to tt <br /> Steve Manger of OSM, the following commitrnent was noted: "If ...shrub <br />~~ <br /> establishment is not adequate or appears that it would not meet our shrub s a , <br /> density standards it is Wyoming Fuel Company's intent to augment the ~yy <br /> program to meet these standards. This augmentation may include <br /> transplanting and/or some form [of] transplanting or another measure b <br /> completely aside from transplanting." Division woody plant data 4 p~~ pz '( <br /> collected over the summer of 1989 indicates that density on the 1981 and q <br /> 1987 reclaimed areas is well below the standard of 3770 stems/acre. <br /> Please revise the permit application to outline a woody stem density <br /> augmentation plan. The permit application contains a document on woody <br /> plant establishment prepared by Fred Harrington in Addendum IV, <br /> Volume IV, which you might review. <br /> y,~ <br />~. ~ (dl> Aa,~"Phi ""!(8~1~~(J~ <br /> <br />~~~ <br />12. The current seed mix includes tw i~oduced ~,~pee~ies, Luna Pubescent <br />~~ <br />' <br />~ <br /> °~ul~ 4.15.2(3) requires a <br />Legras <br />s3 <br />Wheatgrass and Ruebens Can~aian <br /> demonstration that introduced species are desirable and necessary to rteet <br /> the post-mining land use. Please include an appropriate discussion <br /> within the reclamation plan (pages 61-64). Wyoming Fuels did commit to <br /> regular monitoring of this species to offset the lack of "local" research <br /> on this species in the July 28, 1981, Preliminary Adequacy Review <br /> responses in Addendum 1 (page 16) and in the September 14,-1981, <br /> Completeness Review Responses in Addendum 2 (page 12 ). <br /> Hydrologic Balance: Surface Water - Rules 2:04.5, 2.04.7, 2.05.3(4), <br /> an <br />13. The information on Pond 1, found on pages 38 and 39, does not correspond <br /> well with the most recent design specifications found on page 2b of the <br /> September 2, 1981 Adequacy Responses located in Addendum 2. Please <br /> clarify the narrative to reflect existing conditions at the site. <br />14.. Please incorporate the design specifications for the Pond No. 2 principal <br /> spillway found in the October 27, 1986, Renewal Adequacy response letter <br /> into the permit application. <br />15. Please prepare a map showing the currently existing ditches and culverts <br />in the permit area. Number each ditch and culvert and prepare design <br />calculations per Rules 4.03.1(4)(e) and 4.05.3. If this material is <br />already available within the permit application, please reference <br />specific pages, appendices or addendums as appropriate. <br />-4- <br />