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<br />- 2 - <br /> <br />control and will be used in the EIS and the Recreation Impact Phase II Study. This is not the antecedent <br />flood analysis but additional water supply and its impacts. <br />. The Corps was asked about evaporation in their model and stated that they are using the levels for the <br />Cherry Creek Reservoir evaporation. The State charges evaporation at Chatfield and this is based on <br />operating rules by the State Engineer charged to Denver Water. Under the 1979 contract there is language <br />that Denver Water has some management role in how the water supply is operated related to evaporation. <br />The question of evaporation and the assumptions made regarding how it is modeled by be an important and <br />sensitive factor in the analyses. Currently there is about three to four feet of evaporation a year. Paul Flack <br />and Tom Browning will speak to the State Engineer's office regarding the numbers and methodology. <br /> <br />Antecedent Flood Study update (Joel Knofczynski) <br />. The US Bureau of Reclamation has completed the Independent Technical Review and they support the <br />results of the Corps' Antecedent Flood Study. The USBR letter will be incorporated and then sent to the <br />Division and Headquarters for approval. It is uncertain when approval will come but it may be a soon as a <br />month or two. <br /> <br />Water Quality Analyses (Marty Timmerwilke) <br />. Meeting minutes and the plan for this analysis were presented at the previous meeting. There is no <br />proposed change in the dollar amount for this task. <br />. Larry Moore and Joe Busto led a discussion that requested that Tetra Tech take into account the fact that <br />water quality discharges into Chatfield may change as soon as 2007. Roxborough Park Metro District <br />recently was approved for an easement to use three miles ofthe CWCB floodplain lands to build a new <br />wastewater pipeline. This pipeline will remove a wastewater treatment plant above Chatfield and also <br />remove discharges from Lockheed Martin and Roxborough. This is a $18 million project. Roxborough <br />discharges 600,000 gallons a day and Lockheed Martin discharges 200,000 gallons a day. This change <br />should remove about 2,200 pounds of phosphorus into Chatfield. The Lockheed ground water will still be <br />discharged to Chatfield but the new pipeline will take the industrial waste. There is a trading program that <br />is a 2 for 1 trade (every two pounds of point source phosphorous removed nets one pound of credit). <br />However less than 5% of the overall poundage into Chatfield is the point source type. <br />. The Water quality analyses will only take a few months to get done once the contract is in place. <br /> <br />EIS Pro2:ress (Gary Drendel and Gene We2:1inski) <br />. The Affected Environment chapter is near completion. Tetra Tech just submitted the Public Involvement <br />chapter to the Corps. In early December they will get started on the Water Quality chapter. Tetra Tech <br />needs funds to write up the Final Report on Rare and Threatened Plants inventories. They are also working <br />on the Alternatives chapter, focusing on the No Action Alternative comments. The Purpose and Need <br />chapter is close to finalizing as well. <br />. The draft feasibility report and EIS report is a combined under one report. New Corps guidance is to make <br />this an integrated document. The EIS is written by Teta Tech and the Feasibility Report is written by the <br />Corps, but the two will be woven into one FR/EIS Report. <br /> <br />No Action Alternative meetin2: (Joe Busto & Gene We2:1inski) <br />. The CWCB and Tetra Tech met with Central Colorado Water Conservancy District on November 2nd to <br />assist in drafting No Action Alternative comments. Tom Cech's perspective and explanation ofthe issues <br />and complexities of the South Platte was very informative. Draft comments were discussed at this meeting. <br />They will be finalized and emailed to the whole group. Tetra Tech may have a few more questions. <br /> <br />Environmental Restoration (Marc Waa2:e) <br />. The Downstream Group is following through by putting together a panel of experts and there is a lot of <br />interest in doing this study. Denver Water will hire a consultant and collect existing data and package the <br />data to present to the Corps. In a few months Denver Water will host a tour of the South Platte. <br /> <br />Flood Protection . Water Project Planning and Finance. Stream and Lake Protection <br />Water Supply Protection. Conservation Planning <br />