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Page 2 of 3 <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 />7. On Page 17 of Volume IX, the first full paragraph makes mention of the September 5, 2012 <br />Buckhorn analysis (for TR -75). Please revise this paragraph to also include the November 20, <br />2012 analysis that was done in response to the Division's adequacy comments. <br />8. On Page 18 of Volume IX, the last sentence states that the six working piezometers are shown <br />on Figure 1. This does not appear to be the case — perhaps this layer has been turned "off" on <br />Figure 1. Please revise the plan view on Figure 1 to illustrate the locations of the piezometer <br />installations. <br />9. Please update Page 18 of Volume IX to include the vibrating wire piezometers (VWP9 and <br />VWP10) that were installed in May 2012. <br />10. The pagination of Appendix B pages 3 -end are inconsistent with the submitted pages App. B -1 <br />through B -2. Please renumber Appendix 8 for consistency. <br />11. The Subwatershed Hydrology Detail table is provided on page 17 of Appendix B. There are three <br />subwatersheds that should be assigned a curve number of 90 given the current and anticipated <br />pile expansion configuration. Please revise SWS2 for Structure #36 (Ditch F17), SWS1 for <br />Structure #8 (Ditch F5), and SWS1 for Structure #18 (Ditch F14) to a curve number of 90. <br />12. On pages 19 and 20 of Appendix B, the Time of Concentration Details appear to have a few <br />minor errors in the slope information. Please verify and /or revise the Time of Concentration <br />Details for Structures #11 and #23. <br />13. The Structure Summary table from the Sedcad run for the 100 -yr event was not included in the <br />submittal. Please provide the Structure Summary table so that we can verify the discharge <br />values used to size the ditches and culverts. <br />14. The Structure Detail output page from the Sedcad run for West Diversion #1 was not included in <br />the submittal. Please provide design information for West Diversion #1. <br />15. Page App. B -2: <br />a. Please revise the table consistent with the design information provided for Culvert C -F4 <br />(should be a 30" culvert.) <br />b. The design information submitted for Ditch F16 indicates that the ditch will be triangular, <br />but it is listed as trapezoidal on page App. B -2. Please verify which is correct and make the <br />appropriate revisions for consistency. <br />c. Please revise the table to indicate instances where the constructed ditch lining or culvert is <br />in excess of the requirement so that it is clear that the larger sizing is not a design <br />requirement. <br />