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- 3 - Tetra Tech Report Water Quality . The work group has been meeting on water quality issues. The work group includes modelers and interested parties. . There are various water quality models the study can use, and the costs increase with complexity. There was a recent conference cal between the Corps and Tetra Tech, and they agreed to make these minutes available to the group. . According to Russ Claymore, total phosphorus and total maximum daily loads for Chatfield are of interest. A low to mid-level water quality model wouldn't address E. coli/fecal coliform issues. . State Parks stated that Chatfield had been shut down in the past for water quality issues to avoid health risks to water skiers and swimmers. . A HEC 21 model is being developed for the project. That model was preferred because of cost. A higher end model could cost on the order of $100 or more if that becomes necessary. The current budget is $43,000 for water quality modeling. . Terry Baus reminded the group that a high level water quality model might be warranted depending on certain requirements. The group should consider this and investigate the need for a higher level model. Rare Plant Surveys . There was an initial inventory in 1998. Last year another inventory was conducted to assess habitat and endangered plants, namely the Ute Ladies Tresses and the Colorado butterfly plant. Tetra Tech found suitable sites and indicator species but no signs of these plants. This fall they will do another report as well and this should satisfy the requested three years of inventory. . Denver Botanic Gardens offered assistance in providing some sort of wetlands mitigation if needed. Environmental Impact Statement (EIS) Progress . Tetra Tech has prepared a draft "purpose and need" for the project. They have drafted sections of the affected environment. They are working on the alternatives chapter and the public involvement chapter. The general public will not have access to the document until drafted next year. Water users are cooperating agencies with the Corps, and therefore will be able to see "purpose and need" and other sections as they are finished. No Action Alternative . Audubon Society wanted to make sure that conservation and impacts of conservation are discussed as well. Downstream Cooperative (DS Coop) Update WRDA Bill Update - Terry Baus . No recent action on the WRDA bill and the proposed language that creates a nexus between the Chatfield Reservoir Reallocation Study and environmental restoration. . Congress is currently in recess. Phil Bangert is Denver's lobbyist in Washington D.C. Terry stated that they have been working with Diana DeGette and Ken Salazaar and will take it up after Labor Day. . One ofthe considerations with respect to environmental add-on authorization is whether or not the Downstream Group would have input to the Corps analyses for patterned releases that would benefit the environment along the study reach. There would be a potential cost savings to water users for quantified environmental benefits. . Ralph Roza and Marty Timmerwilke (Corps) assisted Denver with original legislative drafting regarding the environmental restoration add-on for Chatfield. Both the House and Senate have approved versions of the WRDA Bill. The two will come together, possibly this fall, to agree on one final Bill for potential approval. Flood Protection . Water Project Planning and Finance. Stream and Lake Protection Water Supply Protection. Conservation Planning