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, F <br />t <br />3. The text at the beginning of Section 9 of the TR-60 submittal states that the entire Bear <br />Creek fan site is a small area exemption (SAE). However, the hydrology designs <br />presented in TR-60 designate only three portions of the disturbed area as SAES. Other <br />disturbed areas, such as the cut slopes and pad area, are not designated as an SAE on <br />Map 2.05-El-BCA2, nor are there any Sedcad designs for them. Please revise Map 2.05- <br />EI -BCA2 to indicate that the entire disturbed area is designated as an SAE and provide <br />appropriate Sedcad designs for the remaining disturbed areas. <br />In the November 26, 2008 submittal, Oxbow stated that the cut slope was considered part <br />of the recently added proposed light use road construction and, therefore, does not need <br />small area exemption designs per Rule 4.05.2(3). As mentioned in item number 4 below, <br />Oxbow also considers the fill areas at the inlet and outlet of the Bear Creek culvert to be <br />part of the light use road construction and, therefore, do not need small area exemption <br />designs either. <br />However, the Division still requests small area exemption sediment control designs for <br />all of the disturbed areas at this site. Rule 4.05.2(1) requires runoff sediment treatment for <br />all areas designated as "disturbed areas". Rule 4.05.2(4), in part, excludes from the <br />definition of "disturbed area" those areas that only consist of roads. Referring to drawing <br />number 2.05-E1-BCA2, the light use road does not exist alone but is part of the facilities <br />pad. Therefore, the Division considers the cut slope and fill areas at the culvert inlet and <br />outlet to be part of the disturbed area for the facilities pad. Therefore, the runoff from all <br />disturbed areas needs to be addressed per Rule 4.05.2. Please provide SAE designs for all <br />disturbed areas, including the cut slope and the inlet and outlet disturbed areas of the Bear <br />Creek culvert BCC-l. <br />? ?J o:?? ,"es?JOt:ue: '?.x:o ) r? '?nt.? e rn cr> scope rs p?rrt ofthe Pad SIL rJhich will <br />t....;:lY C^vU .e? U. --, ?. ?., ? Ee " y °J- .! to ligh' use jai k°oa Ylf?s O?t in G .e <br />design to ad&-ess prev1o?is Di vision cor? cwrrs regarding access to the fan shaft. <br />The rort ,ern culvert inlet tiro sofa'>t cv >er3 0Y-1--t are also being addressed as SAEs. <br />Rock w"'11" he ? sed 10pr.ote tfe 7 outrev of !he culvert and control sediment. <br />4. Please explain why there is no small area exemption area at the south or outlet end of the <br />Bear Creek fan site culvert, as was done at the north or inlet end of the culvert. <br />As explained in item number 3 above, the Division requests that all disturbed areas be <br />included in the small area exemption designs, including the cut slope and the Bear Creek <br />culvert inlet and outlet disturbances. <br />Oxbow respox.se: S?e response so co? ;-,-,one, 3. <br />7. The Sedcad designs for the small area exemptions at the north area, topsoil storage area <br />and the lay down area do not include sediment analyses to show that the 0.5 ml/l settable <br />solids limit can be achieved. Please revise the Sedcad designs accordingly. <br />0 Page 2