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<br />correct? <br />Fill 9 pond designs (EX 15-11) <br /> <br />a) The Division notes that the effluent sediment concentration predicted by the <br />SEDCAD+ model is relatively close to the maximum allowed effluent sediment <br />concentration. This does not appeaz to be attributable to a high percentage of clay <br />sized particles in the disturbed watershed. Although the Division will accept this <br />design information, it may be wise to verify the design information and evaluate <br />possible changes to bring the predicted effluent sediment concentration down. <br />85. As previously discussed, foundation conditions for the pond will be investigated, likely <br />after a conditional permit approval for the applicant to begin construction of haul roads <br />to access azeas for pond foundation investigation. Thus, the applicant's response at this <br />time is inadequate but will likely be resolved through the stipulation process. <br />86. The applicant's response to this question is inadequate. Visual estimation of sediment <br />levels in ponds during quarterly inspection would be acceptable, but only if a cornmitment <br />to establish meaningful markers allowing a somewhat quantitative estimate is incorporated <br />into the permit text. Please add to the text on page 2.05-33 discussion of use of markers <br />or similar devices to estimate pond sediment levels. <br />Rule 2.05.3(51 Oaeration Plan - Toasoil <br />Under this section, all responses were found adequate except as listed below. <br />90. Overburden sampling results in Exhibit 6. Several samples indicate that coarse fragments <br />could be problematic in some of the overburden. Cazeful placement of overburden with <br />limited coarse fragments will need to be followed when using alternate plant growth <br />medium. <br />Rule 4.06.1(2) requires that topsoil be redistributed in accordance with Rule 4.06.4. <br />Should excess soils remain along permanent roadway, Rail load out, etc., the excess soil <br />will need to be utilized at locations identified as deficit topsoil. <br />Rule 2.05.3(61 Operation Plan -Overburden <br />Under this section, all responses were found adequate except as listed below. <br />91. The applicant has indicated the response to this question is forthcoming. The applicant's <br />response is therefore inadequate at this time. <br />98(b). Map 2.05.3-4 indicates that the "Fly Rock Travel Limit" perimeter will lie partially <br />beyond the proposed permit boundary. This is in the vicinity of the area southwest of the <br />local school. This is not regulatorily allowed (Section 4.08.4(8)). Please reduce the <br />radius of the "Fly Rock Travel Limit" perimeter, so that the perimeter lies within the <br />