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III. COMMENTS • COMPLIANCE <br />Below are comments on the inspection. The comments include discussion of observations made <br />during the inspection. Comments also describe any enforcement actions taken during the inspection <br />and the facts or evidence supporting the enforcement action. <br />The Laplata permit revocation site was inspected April 2,2002, at 4:20 pm. The inspection focused on appazent <br />revegetation success, in anticipation oftevegetation sampling later this season and possible termination of DMG <br />jurisdiction at the site. <br />At Laplata there would be two separate areas to sample; main portal bench disturbance area on the south <br />facing hillslope, and the smaller reclaimed sediment pond disturbance on the irrigated valley floor across <br />the road. So early in the growing season it was difficult to judge the apparent productivity of the irrigated <br />pasture, although it appeared to blend in well with adjacent areas, I believe the area was designated as <br />cropland and that as such productivity is the applicable standard, although no specific standard was set. <br />The most logical approach would be to sample productivity within the disturbed area and within a <br />representative adjacent irrigated pasture area. We would need to secure permission from the landowner <br />for such production clipping. The alternative would be visual assessment of apparent productivity later in <br />the growing season, just prior to initial harvest. <br />At the mine bench disturbance area, it will be important to define the exact disturbance boundaries, <br />because it was a pre-law disturbance, only a portion of which was re-disturbed and reclaimed by Laplata. <br />Some concrete foundations were left in place in the coal stockpile area at the base of the old conveyor <br />line, and there is an occupied trailer house there presently: I believe the structures were approved for <br />retention for postmine land use, and that no revegetation was required in the lower facilities area. Also at <br />one end of the upper bench, there is an old portal which had apparently been bat sealed by AML, and <br />they may have done a small amount of surface reclamation. <br />The reclaimed upper bench supported a vegetation stand dominated by rubber rabbitbrush and crested <br />wheatgrass; vegetative cover probably in the 30-40% range (though somewhat difficult for me to judge <br />due to the amount of rabbitbrush present}, The vegetative cover appears to be as good as might be <br />expected for a relatively steep south facing slope in PJ habitat, and cover is the only standard applicable <br />to the upland disturbed areas at the mine. However, the permit specified vegetation cover standard is <br />70%, which would seem to be excessive given the ecological setting. <br />The conveyor route ran down the middle of the small.valley in which the mine was situated, and a gully <br />has eroded along the steep slope from the lower edge of the upper bench backfill down to the flat area at <br />the base of the slope. Some geocell type erosion control material had been installed at some point at the <br />upper end of the steep slope, but it was blown out several years ago by a large storm event (according to <br />Warty Erickson}. Tfiere would appear to be the potential for further headcutting of the gully into the bench <br />backfill when the next large runoff event occurs. Stabilization of the gully headcuj would appear to be <br />warranted. The gully probably averages 2-4 feet wide and in a couple segments along a 150' length has <br />downcut up to 4 or 5 feet deep. There is some Canada thistle along the old conveyor route. <br />