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BLM/EPA - <br />The three data sets (Tables 1, 2 and 3) obtained from the BLM/EPA reflect recent water quality <br />conditions during high flow conditions within the watershed. The data provided by the <br />BLM/EPA has uncertainty associated with it due to the following; <br />• There were no flows measured and/or reported for the locations of interest <br />• There were no direct measures of hardness in order to calculate applicable criteria <br />• The result of `total recoverable' and `dissolved' seem to be either mis-reported or the <br />method of extraction was aggressive enough to have solubilized the total fraction <br />• The quality assurance/quality control field duplicate results fall outside accepted ranges <br />of drift rendering the data suspect <br />The analytical results from the BLM/EPA data sets for the Deadman Gulch background indicate <br />that the system naturally contains elevated concentrations of aluminum, iron, manganese, zinc <br />and other metals in trace amounts. <br />The analytical results from the BLM/EPA data sets for the Lake Fork indicate that there aze no <br />metals exceeding appropriate criteria using conservatively calculated hazdness values (75 mg/L <br />CaCO3 for both Lake Fork locations). The data indicate a slight increase in aluminum and <br />manganese levels at the below location, and a slight increase in pH. <br />LKA Int. DRMS <br />Two locations along the Lake Fork of the Gunnison representing locations above and below the <br />confluence of Deadman Gulch have been studied every quarter since 2004 (Table 4). Results <br />indicate that pH levels actually increase over distance down-gradient which is typical of natural <br />setting water chemistry. There are no other discernable or consistent trends in any of the <br />analytes indicating that Deadman Gulch does not have down-gradient impacts to the Lake Fork. <br />Conclusions <br />This TM represents a culmination of findings that help establish background water chemistry <br />conditions associated with Deadman Gulch as well as water quality chazacteristics within the <br />Lake Fork that bracket the footprint of Deadman Gulch confluence effects. Results indicate that <br />Deadman Gulch background conditions contain elevated levels of some metals as a result of <br />natural hydrogeologic chazacteristics. Results from the Lake Fork measures indicate that there is <br />no effect to the Lake Fork as a result of Deadman Gulch flows. <br />Page 16 of 16 <br />