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No response was required. <br />Rule 4.05.2 - Water Quality Standards and Effluent Limitations <br />4. Please provide text on page Exh-8-238 that states that the sediment control for the Terror <br />Creek vent shaft pad is a small area exemption and provide on that page and on Map 42 the <br />number of the SAE designation. <br />This issue is resolved. Revised page Exh-8-238 and revised Map 42 were provided in the <br />August 25, 2010 submittal. <br />5. On page Exh-8-243, a tie back distance of 125 feet is used in the Sedcad design for the silt <br />fence. However, this tie back distance is not shown on Map 42. Although a berm is in place so <br />that runoff does not go around the silt fence, the berm would obviously not act the same as a <br />silt fence in passing water through while filtering out sediment. Please explain the use of the tie <br />back distance. <br />This issue is resolved. Twenty five feet of silt fence should handle the designed runoff. <br />6. The Sedcad design for TR-67 assumes that there will not be any runoff from the upland area <br />due to the heavy oak brush cover. Based on afield inspection of the site by the Division, this <br />appears to be a reasonable assumption. However, if evidence becomes available that enough <br />upland area runoff is finding its way to the shaft pad, BRL will need to design and construct an <br />appropriate upland diversion. <br />No response was required. <br />Rule 4.07 - Sealing of Drilled Holes and Underground Openings <br />7. Rule 4.07 requires that all drilled holes and underground openings be permanently sealed. <br />Please add detailed plans to the permit application describing how the shaft will be <br />permanently sealed when it is no longer needed. <br />This issue is resolved. BRL responded that the approved shaft sealing design is already in the <br />permit application. <br />Sincerely, <br />Hseph ash <br />Environmental Protection Specialist <br />cc: Jim Stover P.E. (J.E. Stover & Associates) <br />c:/word2007/bowie2/tr67adeg2