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<br />. <br /> <br />I... <br />tC' <br />(,l) <br />N <br /> <br />~ <br /> <br />Inorganics <br /> <br />Parameter Symbol <br />aluminum (soluble) Al <br />cadmium Cd <br />copper Cu <br />iron Fe <br />lead Pb <br />manganese Mn <br />mercury Hg <br />silver Ag <br />zinc Zn <br />ammonia (as nitrogen) NH) (as N) <br />boron B <br />nitrate (as nitrogen) NO) (as N) <br />phosphorus P <br />. sulfate S04 <br />alpha <br />beta <br /> <br />Toxic metals <br /> <br />Radiological <br /> <br />Data Requested and Analyses Performed <br /> <br />. <br /> <br />Data from the Council on Environmental Quality's UPGRADE (User- <br />Prompted GRAphic Data Evaluation) system was requested and analyzed to <br />describe present ambient water quality in the Upper Colorado River Basin. <br />The specifications for this water quality study are shown in Appendix G. <br />Note that the analysis of un-ionized ammonia (NH3) was not possible due <br />to lack of data (see analysis 4) and that the high and low flow periods <br />were made more specific (analyses 2 and 3). <br /> <br />Examples of the UPGRADE data and analyses are presented throughout <br />the following discussion where appropriate. <br /> <br />It should be noted that (1) the subbasins discussed there are con- - <br />eistent with the HAU designation, (2) the USGS has been contracted to <br />analyze future ambient water quality as a .result of projected EET devel- <br />opment scenarios, (3) the study manager, for purposes of the assessment, <br />will report future water quality projections for TDS from the USBR CRSS <br />model only at the three aforementioned downstream points on the Colorado <br />River, and (4) past reports and water quality analyses, as indicated <br />earlier, are generally reflected in this study. The basic lack of data <br />and the unrefined state of water quality modelling are cause for lack of <br />in-depth analyses. <br /> <br />.' <br /> <br />3-9 <br />