2013-10-21_REVISION - C1992080 - Laserfiche WebLink

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R Harries, Goff Engineering C -1992 -080 TR -17 PAR No. 2 21 -Oct -2013 Page 4 of 5 Channel will not be restored to its original configuration, this page should be eliminated or revised to indicate that the design will not be implemented. DRMS 10121: Revising the sixth page of Appendix 5-2 will be handled under the RN- 04 process. 6. DRMS 09120: The design information and maps provided with the technical revision application have not been certified by a registered professional engineer. Please provide the required certification for all of the maps, cross - sections, and plans submitted (Rules 2.10.3(2) and 4.05.4(2)). DBMS 10118: This item has been resolved; the maps, cross sections, and plans have been certified 7. DRMS 09120: The design event requirements for the Carbon Junction channel are as follows: • Unnamed tributary to Carbon Junction Channel —10 yr -24 hr (Rule 4.05.3) • Carbon Junction Channel upstream of the Carbon Junction Diversion Channel 10 yr - 24 hr (Rule 4.05.3) • Permanent Diversion of Carbon Junction around the fill —100 yr — 24 hr (Rule 4.09) DRMS 10121: No response was required 8. DRMS 09/20: It will likely be necessary to extend the rip rap upstream of the Permanent Carbon Junction Diversion Channel to ensure that flow from Carbon Junction is directed to the Permanent Carbon Junction Diversion Channel and not in the direction of the former East Diversion. DRMS 10/21: A rip rap bank stabilization design has been proposed to ensure that runoff from the Upper Carbon Junction Channel is directed to the Carbon Junction Permanent Diversion. This appears to be an appropriate proposal, but eh placement (grade and length) should be verified in the field field fit) to determine whether it extends far enough to ensure that flow is diverted off of the permanent fill and away from the East Diversion Channel. 9. DRMS 09/20: Maps and text provided with the application indicate that the riprapped permanent diversion ends at Station 20 +20—. A comparison with aerial photos of the area appears to show that the riprap extends further upstream, to Station 23 +00 —. Please review, and revise the application as appropriate. DRMS 10121: This item is resolved,: the maps have been revised as requested. 10. DRMS 09/20: No elevation labels have been provided for the contour lines on the various maps. Please include this information, together with the dates the contour data was collected. DRMS 10/21: This item is resolved; the maps have been revised as requested.