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For cover success standards, the cover in the reference area will be compared to the cover in the <br />reclaimed area with no weighted average adjustments for soil type. <br />Attachment 2.05.4(2)(e) - 4 shows the location of the new Reclaimed Irrigated Pastureland <br />reference area in addition to the dryland reference areas near the Nucla airport. <br />Attachment 2.05.4(2)(e) - 5 shows the Statistical Data of the 2007 Sampling of the Reclaimed <br />Irrigated Pastureland Reference Area. Cover and Production data are included <br />For Reclaimed Irrigated Pastureland areas, vegetation cover and herbaceous production will be <br />measured at reclaimed sites and the reference area. Comparisons of the mean parameter values <br />between the reclaimed areas and the reference area will be used to determine revegetation <br />success, as described below. As described above in this section, the production standard is <br />adjusted for soil types in the reclaimed area vs. the reference area. <br />Vegetation cover will be measured as either canopy cover or basal cover of living herbaceous and <br />woody vegetation, as defined by DRMS Regulation 4.15.8(3)(b). Herbaceous production will be <br />measured as current year above - ground biomass of herbaceous vegetation, as defined by DRMS <br />Regulation 4.15.8(4). <br />Vegetation sampling for measuring reclamation success will be conducted to ensure a repeatable <br />and unbiased estimate of each vegetation population parameter. Measurements made on the <br />reference area will be done in the same manner and season as measurements made on <br />reclaimed lands, to ensure valid comparisons as specified in DRMS Regulation 4.15.11(1). <br />Measurements will be typically made in late May to early June, although the timeframe is subject <br />to variation associated with weather conditions and irrigation water availability. Sampling will be <br />conducted within two weeks priorto 1' cut harvest of the reclaimed fields and priorto any growing <br />season livestock grazing in the reference area. <br />Vegetation cover will be measured by a point intercept method that meets the provisions of DRMS <br />Regulation 4.15.11(1)(a)(i). The observational unit will be a series of points along a transect at <br />least 5 meters in length, and at least 50 data points at regular intervals along the transect. A point <br />sampling device supported by a rigid frame will be used to ensure unbiased and vertical point <br />placement. <br />(Revised: PR -06) 2.05.4(2)(e) - 26 <br />