2015-10-13_REVISION - C1981014 (12)

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the t, value equals 2.2328. Since the calculated the t, value (2.2328) from the Refuse Pile Reclamation Area exceeds the t, value (0.854), it can be concluded that Loadout Reclamation, satisfies the revegetation success standards for woody plant density on this site. According to Table 14, Vento Portal Reclamation - 2014 Shrub Density, the average woody plant density, outside of the shrub clump areas, equals 23.17 woody plants per 100 square meters or 934.8 woody plants per acre, which is greater than the 800 woody plant revegetation success standard approved in connection with TR-45 for the Vento Portal Reclamation Area. However, since sample adequacy was not achieved for the woody plant density sampling on the Vento Portal Reclamation (N=30 and Nm=55.9), the reverse null statistical approach must be used. Application of the "reverse null" statistical approach documents that with respect to the woody plant density for the Vento Portal Reclamation, the tc value equals 1.9257. Since the calculated the tc value (1.9257) from the Vento Portal Reclamation exceeds the t, value (0.854), it can be concluded that Loadout Reclamation, satisfies the revegetation success standards for woody plant density on this site. Loadout Reference Area. For the Loadout Reference Area, the 2014 average "allowable plant cover" was 28.67 % with a standard deviation of 6.06. Therefore, the ultimate revegetation success standard with respect to "allowable plant cover" on the areas corresponding to the Loadout Reclamation would be 25.80 % (28.67 % x.90 = 25.80 Application of the sample adequacy calculation to these data means that the number of samples needed to characterize the parameter of "allowable plant cover" for the Loadout Reference Area at the 90 % confidence interval is 13.9 samples. Since a total of 15 samples were collected on Loadout Reference Area, it can be concluded that a sufficient number of samples were collected to characterize the parameter of "allowable plant cover" at the 90 % confidence interval required by the CDRMS regulations and the ultimate comparison for "allowable plant cover" can be made by direct comparison. On the Loadout Reference Area, the average perennial herbaceous forage production averaged 11.30 g/l/4m2 or 402.8 pounds of air-dry forage per acre with a standard deviation of 7.44 g/ 1/4M2 or 265.3 pounds of air-dry forage per acre. The ultimate revegetation success standard with respect to forage production would be 10.17 g/1/4m2 or 262.5 pounds of air-dry forage per acre (11.30 g/1/4m2 X .90 = 10.17 g/1/4m2 or 362.5 #/A). Application of the sample adequacy equation to these data means that the number of samples needed to characterize the parameter of perennial herbaceous forage production for the Loadout Reference Area at the 90 % confidence interval was 125.2 samples. Loadout Reclamation Area. For the Loadout Reclamation Area, "allowable plant cover" averaged 3 9. 10 % with a standard deviation of 10.18. Application of the sample adequacy calculation to these data means that the number of samples needed to characterize the parameter of "allowable plant cover" for the Loadout Reclamation Area at the 90 % confidence interval is 20.2 samples. Since a total of 21 samples were collected on Loadout Reclamation Area, it can be concluded that a sufficient number of samples were collected to characterize the parameter of "allowable plant cover" at the 90 % confidence interval as are required bythe CDRMS regulations and the ultimate comparison for "allowable plant cover" can be made by direct comparison. Since a total of 15 plant cover transects were sampled on the Loadout Reference Area and since sample adequacy was achieved (Nm=13.9) and since 21 plant cover transects were collected on the Loadout Reclamation and since a sufficient number of samples were collected to characterize the parameter of "allowable plant cover" at the 90 % confidence interval (Nm=20.2) as are required by the CDRMS regulations and since sample adequacy was 28