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correction from the stockpile volumes from Table 2.05.4(d)-2. A <br />new page 2.05.4(2)(d)-38 has been enclosed <br />Item 34. <br />Item 40 <br />Please correct the typographical error (e)-1 to (d)-1 on amended <br />narrative page 2.05.4(2)(d)-35 and provide Attachment page <br />2.05.4(2)(d)-1-19 & 20. <br />A new page 2.05.4(2)(d)-35 is enclosed that has the typographical <br />error corrected plus new pages Attachment 2.05.4(2)(d)-1-19 & 20. <br />Please include a summary description of any changes made <br />subsequent to the July version <br />As you stated in the third paragraph of your 18 November 2008 <br />Third Adequacy Review letter, WFC has modified the Threshold <br />Suitability Level for Conductivity in Table 2.05.4(2)(d)-1 from 4 <br />mmhos/cm to 6 mmhos/cm for Prime Farmland, Lift B and Single- <br />Lift Soils. The explanation for the change can be seen in the <br />superscript 2 explanation at the bottom of the Table 2.05.4(2)(d)-1. <br />A new Attachment 2.05.4(2)(d)-2 has been added as well and it <br />shows different conductivity threshold for different vegetation <br />species that support the higher conductivity standard for the <br />alfalfa, and grass vegetation that WFC is planting in its post mine <br />reclamation. As far as prime farmland, the sampling interval is on <br />a 2.5 acre grid, which is fairly tight spacing. In conclusion, past <br />backfill soil sampling has not indicated a serious problem with <br />Conductivity, but there has been two samples in recent times that <br />had elevated values. An elevated conductivity does affect <br />vegetation growth and productivity, so it is an important indicator <br />of the potential success of the post mine vegetation. <br />2