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Mr. Jim Stover - 3 - April 11, 1989 <br />2. Riparian Community: At least <br />(Agropyron riparian; cool-season <br />coooo~season so ormer; unknown g <br />species) exist in the riparian zo <br />comply with the grass part of the <br />exceed the minimum relative cover <br />fails the woody species diversity <br />species present (see woody plant <br />three grass species <br />sod former; Agrostis alba, <br />rass which may actual~e several <br />ne. This area probably does not <br />success standard. Forbs combined <br />requirement, but again the area <br />by virtue of having only two <br />density data). <br />Woody Plant Density: Success Standard - Final: 1000 stems per acre. <br />Intermediate (Year 4);~ems per acre. <br />1. Shrub Community: As no woody plant stems were encountered, <br />this area is no c ose to either the final or the intermediate <br />success standards. <br />2. Riparian Community: An average of 134.8 woody stems per acre <br />was encountere in e t transects. This amount is also short of <br />both standards. <br />E. Weed Control <br />Both areas have at least the beginnings of potential noxious weed <br />problems. The species of special concern are Cirsium arvense <br />(Canada thistle) and Cirsium vulgare (Bull thist a Tie weed <br />problem is especially pronounc~n the riparian area where the <br />two species comprise 17.0% of the relative vegetative cover. <br />To reiterate the opinion I voiced last fall, Blue Ribbon Coal <br />should consider employing some weed control measures soon before <br />the situation becomes worse. Prior to any weed work, Blue Ribbon <br />should draft a weed management plan in consultation with the <br />local extension service agent and submit that plan for Division <br />approval. Weed management may prove as simple as spot spraying <br />patches. However, potential problems that must be considered <br />include the effect that certain herbicides have on non-target <br />vegetation (for instance, willows and woody plants that are <br />intermingled with thistle in the riparian area) and the proximity <br />of some weed patches to Hubbard Creek. <br />If you have any questions, please do not hesitate to contact me. <br />Sincerely, <br />~~ -Y <br />Matthew S. Hayes <br />Reclamation Specialist <br />MSH/ern <br />5028E <br />