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I I I I I I I I I I I I I I I I I I I ~,.~,.t1 '." -' Chapter 1 - Gather Existing Information ~0 8. Obtain WQdata/studies lincl. biological monitoring) The Upper Gunnison River Water Conservancy District contracted with Lynn Cudlip of Bio-Environs to prepare a Summary of Water Quality Studies for the East ,and Slate River Drainages. The report resulting from this effort was completed on May 23, 1993. The report provides summaries of water quality studies of the East and Slate Riv~r drainages in Gunnison County, Colorado. Wiltzius in 1964 conductEld some of the earliest work on the East River above the confluen~e with the Taylor River. Prior to this work, the United States Geological Survey apparently collected data in the area as early as 1959, most likely in connection with tlow gaging stations. The most recent work includes pontinuing efforts by the Colorado Department of Health to collect and store the Environmental Protection Agency STORET data. Stations on East River (#000078) and Slate River (#000150 and #000151) are ongoing collection sites. Additionally, the Mount Emmons Project, the Roaring Judy Fish Hatchery and Rivers of Colorado River Water Watch Network have ongoing water quality collection programs. Studies considered as baseline are the Rumberg et. al. 1978 study, the Mt. EmmonsSTORET Data, the Camp, Dresser & McKee, 1980 "Mt Emmons Water Quality Baseline Study", the NSU Corporation, 1981 report, the East/Slate River 1986/1987 Report, and the STORET data. Basic parameters such as pH, conductivity, dissolved oxygen, and temperature, nutrients' and metals have been recorded in these reports or data banks. Nutrient pata have also been measured, but in many cases the samples were analyzed at limits of detection. The Rumberg et. aI., 1978, the NSU Corporation! 1981 report and the East/Slate River 1986/1987 studies provide nutrient data without this concern. Included in the Cudlip report are summaries of the various studies completed for the East and Slate River drainages, Also included in the report are parameters of water quality listed by stream. In this list, reports have been identified which correspond to the parameter and stream. STORET'data are included in the parameter listings, however, the reviewer must note that all parameters have not been sampled consistently through time. A list of all sites by stream or stream section has been provided in the 7 , ~ ,OJ j :i '..,'.",11 ." ,', , "j", ~">'d'''';='';''_-'';'''~' ""'" .. ~~' "'~~