BOARD00527 - Laserfiche WebLink

Home Browse Search

, ~'lI!''''1~/'''<' . ,'. ....~ . Phase 2 focuses on the Upper Reach, and was scheduled to begin on October I, 1997 and be completed by September 30,1998. The Corps has continued its involvement, as well as proposed assistance from a groundwater contractor. , ~. An additional $50,000 was provided by the 1997 Colorado General Assembly for the study effort. This resulted from under-budgeted aerial photography costs in the original request to the General Assembly. These funds will be applied to aerial photography costs associated with the Upper Reach (Phase 2) analysis. Current Study Status Phase 1- This phase of the study effort has been delayed for the following two reasons. As a result, Phase I was not completed prior to December 31, 1997, as previously planned. First, the DNR purchase order process prevented the CWCB from securing the services of an aerial photography contractor in time to fly the Lower Reach during November 1996, as planned. (Low sun angles during the winter months inhibit accurate aerial photography.) As a result, the aerial photography could not be performed until late February 1997, resulting in a 3-month delay. Second, when the Corps provided cross-section layouts for digitizing by the aerial photography contractor, a disagreement ensued in June 1997 regarding the validity and usability of the lay-outs. Resolution of the dispute took nearly two months (June-July 1997). The aerial photography contractor eventually sent the lay-out data to their East Coast office where the work was performed. The Corps is currently performing a HEC-2 analysis to determine current channel capacity. Once . the capacity is established, mitigation recommendations can be developed for selected locations with " ' . input from other Corps data such as extent of vegetative overgrowth, source of channel constrictions, etc. In the meantime, the Corps' Lower Reach contract was set to expire on August 12, 1997. The CWCB granted the Corps an extension to March 1,1998. Corps Project Manager, Gail Stockton, has indicated that she and her staff intend to complete the Lower Reach channel capacity analysis by March 1, 1997. Phase 2 - The delays in Phase 1 have not adversely affected the Upper Reach analysis. However, CWCB work on the project was hampered by our involvement in Colorado's Presidential Flood Disaster Declaration issued on August 1,1997. Therefore, the aerial mapping services contract for the Upper Reach will be let in February-March 1998. A groundwater analysis contract fmal negotiation session with the USGS is scheduled for January 22, 1998 in Rocky Ford. The current intent is to have the aerial mapping completed by April 1998 with digitized cross-section information available to the Corps by June 1, 1998. Completion of the Upper Reach channel capacity analysis is still scheduled for October 1, 1998, as is the groundwater analysis but will probably be delayed up to three (3) months dues to previous delays in the study process. '\<' . , {