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12.0 Reveoetation Success Criteria and Statistical Procedures <br />12.1 Dryland Pasture <br />Revegetation will be deemed adequate if: <br />1) Vegetation cover at the reclaimed area is at least 90% of the vegetative cover at the <br />reference area, in conformance with CDRMS Regulations 4.15.8. One of the three <br />statistical comparison methods in CDRMS Regulations 4.15.11(2) subsections (a), (b), or <br />(c) will be used, according to the procedures outlined on the following pages, and <br />2) Herbaceous production of the reclaimed area is at least 90 percent of the 500 Ibs /acre <br />standard with 90 percent statistical confidence. <br />3) Species diversity standard will be established as follows: At least 75% of the relative <br />cover or relative production will be comprised of seeded species or species of comparable <br />quality as livestock forage. County listed noxious weed species will not be counted <br />towards the success standard for cover or production in any reclaimed area. For the <br />purposes of this demonstration, a statistically adequate cover or production sample will <br />be taken, or a minimum of 30 observations. <br />4) The allowable relative cover and production contribution of annual and biennial species <br />should not exceed 10 %, or the relative cover and production of such species in the <br />associated reference area or standard, whichever is higher. Annual or biennial cover or <br />production in excess of this threshold should be deleted from the reclaimed area data <br />prior to success comparison. An acceptable alternative is to delete all annual /biennial <br />cover and production from the reference area and the reclaimed area prior to cover and <br />production success comparison. <br />Therefore, cover and production will be measured to adequacy in the reclaimed area and <br />production will be measured to adequacy in the reclaimed area only and then compared <br />to the standard. <br />12.2 Irrigated Hayland <br />Revegetation will be deemed adequate if <br />1) Herbaceous production of the reclaimed area is at least 90 percent of the 2710 <br />Ibs /acre standard with 90 percent statistical confidence. <br />2) Species diversity standard will be established as follows: At least 75% of the relative <br />production will be comprised of seeded species or species of comparable quality as <br />livestock forage. County listed noxious weed species will not be counted towards the <br />success standard for cover or production in any reclaimed area. For the purposes of this <br />demonstration, a statistically adequate production sample will be taken, or a minimum of <br />30 observations. <br />REVISED 11 Nov 09 Tab 22 -25 <br />