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such a demonstration for ponds NHN -002 and NHN -003 or revise the ponds' <br />embankment slopes accordingly. <br />Response — Slopes of Pond NHN002 and 003 were revised to meet the criteria which <br />satisfies Rule 4.05.9(7). <br />g) <br />The Division requests that clearer and larger scale figures of plan views and cross <br />sections for the three sediment ponds in Appendix 2.05.3(4) -1 be provided. Also, please <br />provide plan views with a contour interval smaller than the current five feet. The current <br />figures do not show enough detail. <br />Response — CAD drawing and layout figures were printed in 11x17 and added 1-foot <br />contours for the inslope design. <br />h) In the 3` complete paragraph on page 4 of the Arcadis report in Appendix 2.05.3(4) -1, <br />there are two sentences in which it is stated that the primary discharge structure will be <br />a drop inlet. However, the certified pond cross sections in the same report show that the <br />primary discharge structure is a straight, 18 inch or larger diameter pipe with a 6 inch <br />diameter gated valve. Please revise this paragraph accordingly. <br />Response —The pond cross sections have been revised to show drop inlets. <br />I) The certified pond cross sections in the Arcadis report in Appendix 2.05.3(4) -1 show <br />that the gates on the primary discharge pipe are on the inside of the pond embankment. <br />How does Western Fuels propose to open the discharge gates if the water level is well <br />above the gated valve? <br />Response — The valve control is shown in the Figure 5 and the text is edited. <br />J) <br />In Appendix 2.05.3(4) -1, "ARCADIS Report on Sediment Control ", it is stated on the <br />cross - sections for the three sediment ponds that 18 inch or larger cmp principle <br />spillways will be installed. However, Rule 4.05.9(14)(b) requires that a professional <br />engineer certify that the pond has been constructed as designed. Therefore, an exact <br />construction design is required. Please revise the three sediment pond cross sections to <br />state the exact diameter of the principle discharge tube. <br />Response — Both CAD drawing and report are revised to show 18 "principal spillways. <br />The phrase "or larger" has been removed. <br />5. DRMS: The Division has no further concerns with this question. Map 2.05.3(3) -1 was <br />revised appropriately in the submittal dated May 26, 2011. However, the Division has one <br />additional request regarding this map. <br />a) On Map 2.05.3(3) -1, please add a line to connect the SW -FA notation with the SW -FA <br />drainage area. <br />Response — Map 2.05.3(3) -1 Surface Water Hydrology has now been labeled as Map <br />2.05.3(4) -1 Surface Water Hydrology. A line has been added to connect the SW -FA <br />notation with the SW -FA drainage area in Map 2.05.3(4) -1. <br />9. DRMS: The Division has no further concerns. The May 26, 2011 submittal contained <br />Sedcad designs that demonstrate that the ponds have sufficient volume capacities. <br />Page 17 <br />