Laserfiche WebLink
there are three or more perennial or biennial plant species of which two are graminoids and <br />one is a perennial or biennial forb or shrub. No one component of the above three species <br />should comprise greater than 60% relative cover nor less than 2% relative cover, during a <br />given year's quantitative sampling. <br />Species composition data will be derived from quantitative relative vegetation cover <br />information collected by species or quantitative herbaceous production data collected by <br />species. Plant species listed as noxious by the Colorado Department of Agriculture (species <br />on CDA Noxious Weed List A or B) may not be considered in the evaluation of species <br />composition success. <br />2.8.8 REVEGETATION SUCCESS CRITERIA: POST-SMCRA, INDUSTRIAL OR <br />COMMERCIAL RECLAIMED AREAS (CATEGORY H) <br />A number of areas at the mine were disturbed post-SMCRA, have an approved post -mining <br />land use of industrial/commercial, and have been developed for that post -mining land use. <br />The activities on these areas are not conducive to revegetation for their use (e.g., Elk Creek <br />and Sanborn Creek facilities, sediment pond B, and similar areas). These areas will not have <br />a revegetation standard for final revegetation success, as they have been requested to be left <br />post -mine by the surface landowners, and any erosion from these areas is minimized and <br />controlled by in-place best management practices. <br />2.9 REVEGETATION SAMPLING METHODS AND STATISTICAL DEMON- <br />STRATIONS FOR REVEGETATION SUCCESS (RULES 2.05.4.2(E), 4.15.11) <br />2.9.1 METHOD FOR SAMPLING PRE-SMCRA, UNDEVELOPED LAND RECLAIMED <br />AREAS (CATEGORY A) <br />In pre-SMCRA reclaimed areas that have an undeveloped land post -mining land use, <br />revegetation sampling to determine reclamation success will be necessary only where <br />determined by the surface landowner and where necessary for surface erosion control. <br />These areas are identified in Table TR -A. <br />The applicable revegetation success standard for such areas will be a technical standard for <br />total vegetation cover adequate to control erosion as specified in Section 2.8.1. <br />Quantitative sampling will employ the applicable methods for sampling design, timing, <br />sample numbers/sample adequacy, and statistical analysis as described in Methods for <br />Sampling Post-SMCRA,Undeveloped Land Reclaimed Areas Using a Reference Area. <br />Total Vegetation Cover <br />Total vegetation cover will be estimated by the use of the point -intercept method. An ocular <br />point frame (e.g. ESCO Associates or other manufacturer) will be used to minimize <br />instrument error and maximize precision and observer accuracy. Cover transects will be a <br />minimum of 25 meters in length, with two sample data points collected at 1.0 meter intervals <br />along the transect on opposite sides of the transect centerline, 1.5m apart. Transect direction <br />will be established randomly through the use of computer generated random directions (0- <br />360°). In no event will transects be allowed to extend within ten feet of reference area or <br />revegetated area boundaries to minimize impacts from "edge effect." <br />TR -77 H-15 Revised March 2019 <br />