Laserfiche WebLink
• <br />• <br />• <br />This vegetation type corresponds to the Second Park Lateral Ditch which enters the site near the <br />southeastern portion of the Meehan property and exits the area on the western side of the Garvey <br />property. Given the duration and rate of flowing water, this large ditch is devoid of vegetation <br />and can more correctly be considered to be a canal. All other smaller lateral ditches on the site <br />have the water moved with sufficient regularity that they are mostly dominated by plants. <br />The total area of the Irrigation Ditch vegetation type as shown on Map 2.04.10 -1, Permit Area <br />Vegetation Map, is 0.46 acres and this type equals 0.14 percent of the proposed mine permit <br />area. <br />DRAINAGE CHANNEL <br />This vegetation type exists in those areas where irrigation tailwaters flowing from up slope fields <br />collects in the bottoms of swales and draws to form stream channels. This designation <br />corresponds to those areas covered by the COE regulations for sites possessing an ordinary high <br />water mark (OHWM). According to their regulations, areas possessing an OHWM possess <br />flowing waters for sufficient duration to render them devoid of vegetation either through the <br />processes of physical eradication or by flooding out the vegetation. Within the proposed NHN <br />Mine permit area, there are two areas, one in the bottom of Meehan Draw and the other in the <br />bottom of the unnamed drawing which flows across the southeast portion of the site which <br />possesses these characteristics. <br />The total area of the Drainage Channel vegetation type as shown on Map 2.04.10 -1, Permit Area <br />Vegetation Map, is 0.07 acres and this type accounts for 0.22 percent of the proposed mine <br />permit area. <br />REFERENCE AREA VEGETATION SAMPLING <br />IRRIGATED PASTURE REFERENCE AREA <br />The Irrigated Pasture Reference Area sampled in connection with the proposed NHN Mine area <br />is the currently approved reference area for the Irrigated Pasture vegetation type for the existing <br />NH2 Mine Permit Area and is located immediately to the southeast of the New Horizon Mine <br />office. This site was sampled in expectation that the existing vegetation characteristics of this <br />site would be similar to those associated with the Irrigated Pasture predisturbance areas <br />associated with the proposed NHN Mine permit area. <br />Plant Cover. The results obtained from the sampling of the 15 plant cover transects on the <br />Irrigated Pasture Reference Area are presented in Appendix Table 2.04.10 -21, Irrigated Pasture <br />Reference Area- Plant Cover. Total plant cover on this site averaged 76.60 percent and litter <br />Section 2.04.10 Page 21 April 2011 <br />