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Empire Eagle Mine Vegetation Final Bond Release Monitoring 2005-2006 <br />NOTE: By generating random X and Y offsets for positioning the grid, <br />' every point inside the reference area is given an equal opportunity of <br />being chosen as a sample point. <br />4. To minimize edge effect influences on vegetation samples, grid <br />intersections that lie within 25 feet, or 1/4 of the grid interval distance <br />when the grid spacing is 100 feet or less, from the vegetation community <br />boundary will be eliminated from an areas potential sample set. <br />5. Potential sample start points are located at each grid intersection that falls <br />within the area being monitored. A random whole number between 1 and <br />the maximum number of potential sample points is then generated for <br />each intersection; no duplication of whole numbers is permitted. Random <br />numbers are assigned to grid intersections from west to east and north to <br />south until all intersections lying within the sample area have been <br />assigned a random sample order number. <br />6. Sample start points are located in the field using one of two survey <br />methods: 1) GPS equipment or 2) physical survey. When locating sample <br />points by GPS survey either sample point coordinates, or grid intervals <br />and bearings may be used. Sample points will be located in the field using <br />a sub-meter GIS grade GPS unit. When physical measurements are <br />used, a visible landmark is identified in the field. Sample start points are <br />then located by either chaining or stepping off the distances to them on <br />predetermined bearings. Following field location, each vegetation <br />parameter is monitored at the random sample start points in numerical <br />order until sample population statistical adequacy is satisfied. <br />This process is repeated for each vegetation community to be sampled. A map <br />identifying the selected sample points for each vegetation parameter sampled <br />within each sampled area is generated to document sample point locations. <br />Habitat Management, Inc. 6 6/7/2006 <br /> <br />