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<br /> <br />III IIIIIIIIIIIIIIII,~ <br />STATE OF COLURf~D0 <br />Roy Romer, Govei <br />DEPARTMENT OFNATURAL RESOURCES <br />MINED LAND RECLAMATION DIVISION <br />DAVID C. SHELTON, Director <br />DATE: September 22, 1987 <br />T0: Michael S. Savage ~~/ <br />FROM: Peter V. O'Connor <br />RE: WALDEN COAL COMPANY BOURG STRIP VEGETATION SAMPLING; <br />PERMIT N0. C-81-021 <br />As requested, Dave Berry and I conducted vegetation sampling of this mine site <br />on Wednesday, September 9, 1987. A total of eight transects were run; this is <br />three more than was run in 1986. A variety of areas with different slopes and <br />aspects were chosen within the reclaimed East Dump for these eight transects. <br />Attached are the field sheets and a summation form for these transects. When <br />reviewing the attached, please consider the following observations. <br />1: The area was exceedingly dry. The normal summer thunderstorms <br />never materialized this year resulting in some very dry <br />conditions. This resulted in grasses still in their vegetative <br />stage without seed heads making identification nearly <br />impossible. Therefore, all of the wheatgrass species were <br />clumped together as "Agropyron Species" rather than being <br />broken into individual wheatgrass species. I would recommend <br />againsty evaluating for species diversity because of this <br />clumping situation. <br />2. Because of the dry conditions, the Russian thistle (SalSOla <br />kali) was dried to the point that I considered this material as <br />"Titter" rather than an actual species: It was impossible to <br />discern which thistles could be considered "live" or "dead"; <br />therefore, they were all considered "dead" thereby acting as a <br />litter material: <br />3: The shrub transects were inadvertently run for only 40 meters <br />rather than the usual 50 meters. I do not believe that <br />transects 10 meters shorter substantially impacted the results <br />for shrub density. <br />4. Depth of topsoil was determined by digging soil holes with a <br />soil spade. Once a change in soil color was observed, a <br />measurement of total depth was taken. This soil depth <br />determination was made near the start of each transect and is <br />reported in decimeters: <br />cc: Dave Berry <br />srs <br />2415E - - <br />423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203-2273 Tel. (303) 866-3567 <br />