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Susan Burgmaier -2- September 16, 2013 <br />BOW2: Please see revised page 1. <br />4. DRMS: The pagination of revised page 4 of Volume IX doesn't fit with the currently <br />approved version of Page 5 that starts with "Diversion Ditches ". Please submit a revised page <br />4 that coincides with the currently approved page S. <br />BOW2: Please see revised page 4. <br />5. DRMS: Please update Page 4 of Volume IX, the "West Expansion" entries under the <br />"Slopes" category to reflect the "as- built" configuration with slopes as steep as 2h:1v <br />approved with TR -75. <br />BOW2: Please see revised page 4 <br />6. DRMS: Revised page 10 of Volume IX indicates that Pond F will be cleaned when sediment <br />accumulation reaches 75% of the maximum storage, but further states that the ability to <br />remove sediment from pond F is contingent upon weather conditions. Two years of sediment <br />capacity and scheduled cleanouts at 75% capacity are recognized as best practices, and the <br />Division understands that weather conditions are a valid concern for maintenance scheduling. <br />BRL can determine how best to schedule sediment removal from the pond, as long as BRL <br />ensures that the pond is in compliance with Rule 4.05.6(3)(b) requiring that ponds provide for <br />adequate sediment storage volume and periodic sediment removal to effect compliance with <br />appropriate discharge effluent limits. Please revise the page to include a sentence stating that <br />at no time will sediment accumulation in the pond be in excess of the maximum storage level. <br />BOW2: Please see revised page 10. <br />7. DRMS: On Page 17 of Volume IX, the first full paragraph makes mention of the September <br />5, 2012 Buckhorn analysis (for TR -75). Please revise this paragraph to also include the <br />November 20, 2012 analysis that was done in response to the Division's adequacy comments. <br />BOW2: Please see revised pages 17 and 18. <br />8. DRMS: On Page 18 of Volume IX, the last sentence states that the six working piezometers <br />are shown on Figure 1. This does not appear to be the case — perhaps this layer has been <br />turned "off" on Figure 1. Please revise the plan view on Figure 1 to illustrate the locations of <br />the piezometer installations. <br />BOW2: Please see revised Figure 1. <br />9. DRMS: Please update Page 18 of Volume IX to include the vibrating wire piezometers <br />(VWP9 and VWP10) that were installed in May 2012. <br />BOW2: Please see revised page 18. <br />