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INTRODUCTION <br />At the request of Energy Fuels Coal, Inc. (EFCI) an evaluation was made of the <br />revegetation efforts at the Raton Creek Mine located near Trinidad, Colorado. These <br />reclaimed areas were sampled in only their second and third growing seasons, to <br />determine the successfulness of the initial revegetation efforts. Two types of reclamation <br />are found at this location. Portions of the site were topsoiled with topsoil which was <br />salvaged during mining operations and portions of the reclamation were non-topsoiled, <br />being disturbed before there were any regulatory requirements for topsoil to be salvaged. <br />Previous investigations commissioned by the Operator suggested that the regraded spoil <br />was of sufficient quality to support the plant cover required by the current regulations. <br />One of the primary objectives of this evaluation, was to compare the vegetation found on <br />the topsoiled reclaimed areas with that found on the non-topsoiled reclaimed areas. The <br />location of the various reclaimed sites was shown on the map entitled "1997 Annual <br />Reclamation Map" which was supplied by the Operator. <br />A secondary objective of this evaluation was to make observations on the successfulness <br />of revegetation efforts on two SAE areas at this mine site. These sites corresponded to <br />the old topsoil stockpile located in the southwest corner of the reclaimed area and a <br />second SAE site was located on the hillside near the clear water diversion ditch, in the <br />northwest portion of the reclaimed area. <br />METHODOLOGY <br />Since this sampling effort was performed to satisfy interim revegetation monitoring <br />requirements, there was no effort to sample these areas to the required level of sample <br />adequacy required for final bond release sampling. Based on discussions with Ms. Janete <br />Binns, of the Colorado Division of Minerals and Geology (DMG), it was recommended <br />that a total of 15 transects be sampled in each reclaimed area and this was the sampling <br />scheme utilized at this location. The sampling schemed used in this evaluation is <br />consistent with that found in the DMG's Vegetation and Bond Release Guidelines. <br />Sample plot locations were determined using a Trimble XRS Global Positioning System. <br />Using the map supplied by the Operator, the minimum and maximum state plane <br />coordinates for this site were determined and then based upon these coordinates, sample <br />plot locations were determined by using random numbers, generated from ahand-held <br />calculator. A total of 15 sample plots were located in both the topsoiled and non-topsoiled <br />reclaimed areas. The sample plot locations were marked in the field with appropriately <br />numbered plastic wire pin flags. The real time accuracy of the gird system generated by <br />the GPS unit to establish the sample plot locations was plus or minus 18 inches. <br />At each sample plot location along the 50 meter transect tape was laid out using the <br />azimuth bearing generated by random numbers from the calculator. Along each transect <br />tape cover was sampled using an inclined metal ten-point frame. Prior to going to the field <br />a total of ten random numbers between 0 and 50 were recorded on the field data sheets. <br />Each random interval was sampled with ten points. The values obtained from the ten <br />random intervals were then averaged into a single datum which was used for statistical <br />comparisons. <br />2 <br />