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<br />• <br />n <br />U <br />INTRODUCTION <br />Quantitative sampling of reclaimed areas. at Seneca Coal Company's (SCC) <br />Seneca II-W Mine was undertaken in July 1998 by ESCO Associates to facilitate <br />SCC's continuing monitoring of the progress of these areas in relation to <br />revegetation performance standards. <br />Methods, sample areas, and sample <br />sizes were those specified by SCC. <br />Reclamation Units and Sampling Locations <br />The reclamation sampling unit sampled at the Seneca II-W Mine in 1998 are <br />shown on Map 1, "1998 Vegetation Monitoring Locations". The reclamation <br />unit monitored was the 1991/1993 Reclaimed Area. <br />Within the 1991/1993 Reclaimed Area, the SCC-specified number of samples <br />were located randomly on a map produced by SCC using numbered grid cells <br />and random numbers generated by computer. The SCC-assigned numbers of <br />samples for a given parameter in this area reflected previously experienced <br />sample variability or the level of precision required. <br />Grid cell size was 100 feet X 100 feet. These grid cells were placed <br />contiguously by computer in a Geographical Information System (GIS) rendering <br />of the 1991/1993 Reclaimed Area. Random numbers generated by computer <br />were used to select grid cells, in the middle of which a sample point was placed, <br />and recorded on the field maps. These sample points were located as <br />accurately as possible in the field using aerial and topographic maps and <br />pacing from known locations.. Cover and density sample .transects were <br />