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release of bond in accordance with Rule 3.03.1(2)(c), or partial release of bond in accordance <br />with Rules 3.03.1(2)(b), and 3.03.1(3)(b); Emphasis added. <br />It should be noted that the revegetation success measurement for Prime Farmland is slightly <br />different from that applied to Irrigated Cropland in general. Revegetation success on Prime <br />Farmlands is determined using a three-year rolling average of production, compared to two <br />years of production on Irrigated Cropland in general. <br />Irrigated Cropland - Non -Prime Farmland <br />A minimum of 2 years of production and cover data will be gathered in all non -prime farmland <br />Irrigated Cropland areas. This is in accordance with Rule 4.15.9, shown below. Each year the <br />IC data is gathered from reclaimed areas, it will also be gathered from the IC reference area. <br />Rule 4.15.9: <br />For areas to be used as cropland, success of revegetation shall be determined on the basis of <br />crop production (statistical procedures using vegetation studies) from the mined area as <br />compared to approved reference areas or other approved standard(s). Crop production from <br />the mined area shall not be less than that of the approved reference area or standard for two <br />of the last four years of the liability period established in 3.02.3. Crop production shall not <br />be considered prior to year nine of the liability period. With respect to annual grain crops <br />for which the cropping cycle may incorporate a summer fallow year, two of the last four <br />cropping years will be considered. This liability period shall commence on the date of initial <br />planting of the crop being grown. Production shall be considered equal if it is not less than <br />90% of the production as determined from the reference area or approved standard with <br />90% statistical confidence. Emphasis added. <br />Revegetation Success Statistical Procedures - All Irrigated Cropland <br />Revegetation success on all Irrigated Cropland at the New Horizon Mine will be measured based <br />on crop production according to either Rule 4.15.9 or Rule 4.25.5, depending on whether it is <br />Non -prime Farmland or Prime Farmland. In both cases, measuring of the production will be <br />carried out by using the quadrat method listed in Rule 4.15.11(1)(b)(i). The quadrat sampling <br />method listed in this rule will be conducted according to Rule 4.15.11(2) as shown below: <br />Demonstrations of sample adequacy and revegetation success for cover and productivity shall be <br />made in accordance with Rule 4.05.11(2). <br />(a) If the reclaimed area sample mean is equal to or greater than 90 percent of the relevant <br />success standard, success may be demonstrated by direct comparison if sample size adequacy is <br />demonstrated by the formula below. A minimum of 15 sample observations shall be taken even if <br />statistical sample adequacy is achieved with fewer observations. <br />Page 37 May 2016 (TR -75) <br />