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Mike Boulay -28- April 11, 2011 <br />CAM: Page 2.05-9 has been revised. Please see revised page 2.05-43 and <br />pages 2.05-44 & 45 that were updated due to text over-flow and page numbering. <br />50. Since there are several locations where the railroad spur and loop are close <br />to Reed Wash, the Division suggests that a barrier, such as a berm, be <br />constructed between the railroad tracks and Reed Wash in case of a coal <br />spill from the railcars. <br />CAM: Berms will be used in conjunction with silt fences as part of the sediment <br />control plan where the rail spur is near Reed Wash. Details can be found in <br />sections 2.05.3(4), 2.05.6(2) and 2.05.6(3). Design for the silt fences can be found <br />in Exhibit 9, and locations are shown on Map-16. <br />51. The plan and profile of the proposed rail loop is provided on Map 21; there is very <br />little other information presented within the application. Based on communication <br />with Ms. Stover-Bishop, Union Pacific railroad has its own detailed requirements <br />governing the construction of embankments. Please provide a summary of <br />those requirements for inclusion within the permit text. Otherwise, the <br />Division will need to require that the embankments be constructed in <br />accordance with the Rules for roads and embankments. <br />CAM: Page 2.05.9 has been revised, and Union Pacific Construction Standards <br />have been provided in new Exhibit 16. <br />Rule 2.05.3(3)(c)(i) requires that specifications for each bridge be provided. On <br />page 2.05-9, the bridge is described as being 9' in width and 60' in length, <br />constructed of steel girders with concrete abutments. The second paragraph <br />states that geotechnical work on the foundation will be performed prior to <br />construction of the bridge. Please provide general details and a plan sheet of <br />the proposed bridge for inclusion in the permit application <br />CAM: Please see the Bridge plan and profile shown on Map-21. <br />Rule 2.05.3(4) Ponds. Impoundments, and Diversions <br />52. The Division is concerned that groundwater may be exposed during the <br />construction of at least two of the five proposed sediment ponds. Ponds 2 and 4 <br />have bottom elevations that are very close to the groundwater table. For <br />example, using the minimum groundwater elevations (worse case or highest <br />level) reported for Pond 4 in Exhibit 3 and extrapolating these numbers between <br />the wells, the Division estimates the groundwater elevation to be about at 4449.3' <br />at Pond 4. The bottom of the Pond 4 as shown on Map 14 is 4450'. This <br />appears to be essentially the same elevation as the water table at this location. <br />Likewise Pond 2 bottom elevation would be within about three feet of the ground <br />water table at the proposed location for the pond. The Division of Water