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RULE 4 PERFORMANCE STANDARDS <br />TALL SHRUB FIELD <br />Preferred application method is with a Trillion or similar seeder. Species that are problematic for drill <br />seadino will be broadcast. <br />4.15.7 DETERMINING REVEGETATION SUCCESS: GENERAL REQUIREMENTS AND <br />STANDARDS <br />During the summer of 2005, reference areas were selected to represent vegetative communities in the <br />Collom mining area. The locations of these reference areas are shown on the Vegetation map (Map 4C - <br />Sheet 1). Extensive, detailed vegetative sampling was performed, duplicating the methodologies as <br />described in Section 2.04.10. <br />The reference areas were sampled for herbaceous cover, herbaceous production and woody plant density. <br />Species diversity was determined utilizing herbaceous cover data from the premining inventory. The <br />reference areas vary in size between 27.7 and 79.5 acres (Table 2.04.10-33) <br />Statistical tests were performed on the vegetative data from the reference areas to prove that they were <br />comparable to the premined area. The parameters compared were herbaceous cover and herbaceous <br />production. <br />Sample size adequacy tests were performed on both the premine and reference area data to insure that <br />representative cover and production data had been obtained at the 90% level of confidence. <br />Where necessary, the mean, variance and number of observations for the premine and reference area data <br />were used to perform t-tests on the cover and production data to insure that there were no significant <br />differences, at the 90% level of confidence, between the sets of cover data and production data. <br />Collom - Rule 4, Page 36 Revision Date: 9/28/11 <br />Revision No.: PR -03 <br />Rec. PLS <br />Species Name <br />Common Name <br />Origin <br />Life Form <br />lbs / acre <br />Agrcpyron spicatum inerme <br />Beardless Bluebunch Wheatgrass <br />N <br />Grass <br />0.50 <br />Agropyron trachycaulum <br />Slender Wheatgrass <br />N <br />Grass <br />0.20 <br />Bromus marginatus <br />Mountain Brome <br />N <br />Grass <br />0.30 <br />Elymus cinereus <br />Great Basin Wildrye <br />N <br />Grass <br />0.20 <br />Stipa viridula <br />Green Needlegrass <br />N <br />Grass <br />0.20 <br />Poa ampla <br />Big Bluegrass <br />N <br />Grass <br />0.20 <br />Festuca saximontana <br />Rocky Mountain Fescue <br />N <br />Grass <br />0.20 <br />Grass <br />Subtotal i <br />1.80 <br />Artemesia ludoviclana <br />Louisiana Sagewort <br />N <br />Forb <br />0.50 <br />Vida americanus <br />American Vetch <br />N <br />Forb <br />0.30 <br />Linium lewish <br />Lewis Flax <br />N <br />Forb <br />0.20 <br />AcHIlea millifolium <br />Western Yarrow <br />N <br />Forb <br />0.10 <br />Pensternon palmeri <br />Palmer Penstemon <br />N <br />Forb <br />0.10 <br />Penstemon strictus <br />Rocky Mountain Penstemon <br />N <br />Forb <br />0.20 <br />Forb <br />Subtotal = <br />1.40 <br />Pursia tridentata <br />Bitterbrush <br />N <br />Shrub <br />1.50 <br />Rosa woodsh <br />Wood's Rose <br />N <br />Shrub <br />0.50 <br />Symphoricarpos rotuncffolius <br />Mountain Snowberry <br />N <br />Shrub <br />1.50 <br />Artemesia tridentata vaseyana <br />Mountain Big Sagebrush <br />N <br />Shrub <br />0.25 <br />Chrysothanmus nauseosus <br />Rubber Rabbitbrush <br />N <br />Shrub <br />0.15 <br />Amelanchier utahensisa <br />Utah Serviceberry <br />N <br />Shrub <br />1.20 <br />Amelanchieralnifoliaac <br />Saskatoon Serviceberry <br />N <br />Shrub <br />1.20 <br />Prunus virginiana melanocarpa <br />Chokecherry <br />N <br />Shrub <br />1.20 <br />Acer glabrum <br />Rocky Mountain Maple <br />N <br />Shrub <br />1.20 <br />Cercocarpus ledifolius <br />Curlleaf Mountain Mahogony <br />N <br />Shrub <br />1.20 <br />Cercocarpus montanus <br />True Mountain Mahogony <br />Shrub <br />1.20 <br />Shrub <br />Su total <br />11.10 <br />Complete Mix Total <br />14.30 <br />NOTE: ACTUAL IMPLEMENTED MIX MAY VARY BASED ON AVAILABILITY OF SPECIES LISTED. <br />CDRMS WILL BE PROVIDED WITH AN AMMENDED MDC FOR REVIEW AND APPROVAL SHOULD ANY <br />CHANGES BE REQUIRED PRIOR TO IMPLEMENTATION OF THE TRIALS <br />4.15.7 DETERMINING REVEGETATION SUCCESS: GENERAL REQUIREMENTS AND <br />STANDARDS <br />During the summer of 2005, reference areas were selected to represent vegetative communities in the <br />Collom mining area. The locations of these reference areas are shown on the Vegetation map (Map 4C - <br />Sheet 1). Extensive, detailed vegetative sampling was performed, duplicating the methodologies as <br />described in Section 2.04.10. <br />The reference areas were sampled for herbaceous cover, herbaceous production and woody plant density. <br />Species diversity was determined utilizing herbaceous cover data from the premining inventory. The <br />reference areas vary in size between 27.7 and 79.5 acres (Table 2.04.10-33) <br />Statistical tests were performed on the vegetative data from the reference areas to prove that they were <br />comparable to the premined area. The parameters compared were herbaceous cover and herbaceous <br />production. <br />Sample size adequacy tests were performed on both the premine and reference area data to insure that <br />representative cover and production data had been obtained at the 90% level of confidence. <br />Where necessary, the mean, variance and number of observations for the premine and reference area data <br />were used to perform t-tests on the cover and production data to insure that there were no significant <br />differences, at the 90% level of confidence, between the sets of cover data and production data. <br />Collom - Rule 4, Page 36 Revision Date: 9/28/11 <br />Revision No.: PR -03 <br />