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• Methods <br />Maps, in both electronic and hazd paper format of all of the reclamation blocks to be sampled in <br />this monitoring effort were supplied by Mr. George Patterson, who also delineated in the field, <br />the exact extent of the reclamation efforts sample in this revegetation monitoring effort at the <br />Southfield Mine. The specific sampling methodologies used in this evaluation aze those found in <br />the Division's "Guidelines with Land Use and Vegetation Requirements of the Colorado <br />Mined Land Reclamation Board for Coal Mining" issued in June of 1988 and the "Guidelines <br />Regarding Selected Coal Mine Bond Release Issues" issued April 18, 1995. In addition to these <br />guidelines, the proposed regulation changes issued on Mazch 27, 2003 entitled "Revegetation, <br />Land Use, R'ddlife and Alluvial Valley Floors" and formally adopted September 14, 2005 by <br />the Colorado Division of Minerals and Geology (DMG) and corresponding documents were used <br />with respect to sample adequacy calculations and proposed statistical comparisons. The specific <br />limits of the specific reclamation units sampled were taken from the 2005 Annual Reclamation <br />Report Maps for both the Southfield Mine Area and the Southfield I.oadout Area <br />Prior to commencing the field sampling and during the preparation of this report, the Permit <br />monitoring requirements were reviewed and discussed with Mr. Patterson and Ms. Janet Binns <br />of the Colorado Division of Reclamation, Mining & Safety (DBMS) regarding the proposed <br />sampling methods and data analysis methods to be used. Agreement on the sampling <br />methodology used in this evaluation as well as percussion to use the proposed program <br />amendments was obtained from the DBMS prior to initiating field sampling. In this evaluation, <br />• the vegetation parameters of production, plant cover, species diversity and shrub density were <br />sampled. These data were then utilized to evaluate the successfulness of revegetation efforts with <br />respect to revegetation success standards with respect to plant cover, forage production, species <br />diversity, and shrub density. <br />Transact Locations. To ensure that all of the areas within each corresponding reclamation block <br />sampled, had an equal chance of being sampled, each proposed sample azea was treated as an <br />individual sample unit and a totally randomized sampling effort was implemented. Utilizing the <br />2005 reclamation maps, prepared by EFCI, and a Trimble Model XRS Pro GPS unit, the extreme <br />north, south, east and west boundaries of each site sampled were wnverted to the 1983 Colorado <br />State Plan South Central Zone (NAD 83) coordinate system. The interval used in the state plan <br />coordinate system is based on foot increments. Given the typical real-time accuracy of this GPS <br />unit of plus or minus 18 inches, all of the transact locations were field located at a sub-meter <br />accuracy. <br />Once the boundaries of the reclaimed area were identified, then using a specially prepared <br />computer program which generates random coordinates, the potential transact location <br />coordinates were identified. These coordinates were then entered into the GPS unit and the <br />transact location starting points were mazked in the field. At each transact location starting point, <br />the traasect direction was deterrniued by selecting a random direction based on the degrees of the <br />compass (0 to 360.Once the transact orientation was determined, then the 50-meter tape was <br />laid out across the site. All transacts were kept within the sample unit boundaries. In situations <br /> <br />