2010-07-23_REVISION - C1981008 - Laserfiche WebLink

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C-1981-008 July 23, 2010 PR-06 Page 18 of 31 heading (preceding Table 2.05.4(2)(e)-(2)) is somewhat repetitive and lacks clarity. Please amend the paragraphs as follows: Delete the sentence in the 1St paragraph that begins with "The table below... ". Delete the entire 2°d paragraph and insert the following: Assignment of a relative production factor to each soil type allows for the calculation of an acreage weighted relative production factor for the entire reference area, and for an entire irrigated pastureland bond release block (based on the soil types present in the bond release block prior to mining). Replace the sentence immediately prior to Table (e)-(2) to with the following narrative: The table below shows how the weighted average production factor for the reference area is calculated. The same procedure is used to calculate a weighted average production factor for an irrigated pastureland bond release block. Narrative following the table explains how the weighted average factors are used to adjust the reference area sample mean for bond release comparisons. The adjustment procedure elevates the production success standard in situations where premining soils were on average potentially more productive than reference area soils, and lowers the standard in situations where premine soils were on average potentially less productive than reference area soils. vi. In the fourth sentence of the first paragraph following Table (e)-2, weighted average adjustment factor should be changed to weighted average production factor. In the fifth sentence of the paragraph, means should be changed to mean. vii. The paragraph within Subsection 4.5.1 that addresses the timeframe for bond release sampling should be modified to allow for year to year variation in timing of 1 st cut harvest. We recommend that the last sentence of the paragraph be amended as follows: Measurements will typically be made in late May to early June, although the timeframe is subject to variation associated with weather conditions and irrigation water availability. Sampling will be conducted within the two weeks prior to 1st cut harvest of the reclaimed fields and prior to any growing season livestock grazing in the reference area. viii. Subsection 4.5.2 "New Reclaimed Irrigated Pastureland Reference Area" would more appropriately be titled "Irrigated Pastureland Reference Area Characterization and Management". The last sentence of the introductory paragraph should be changed to state "A detailed discussion of reference area characteristics and management is presented below." The narrative would be clearer if it were broken into two parts, with the sub-headings "Reference Area Characterization" and "Reference Area Management". The narrative under Item 5 should be presented in the first part of the subsection under "Reference Area Characterization", with the item numbers deleted. Items 3 and 4 could be incorporated into the initial part of the "Characterization..." narrative, with the item numbers deleted. The narrative under Items 1 and 2 should be presented in the second part of the subsection, under the sub-heading "Reference Area Management", with the item numbers deleted. ix. In Subsection 4.6, narrative indicates that after the first season, "grazing may be implemented in the winter". This would seem to imply that grazing would not be conducted on IP reclaimed areas during the growing season, but areas that are hayed during the summer might be grazed during the winter. However, the following sentence states that "Harvesting will continue to be considered as a management option if grazing is not implemented in any given year." This would seem to imply that grazing during the growing season might be conducted as an alternative to