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Abbreviations <br /> gpm =gallons per minute <br /> cfs =cubic feet per second <br /> mg/L= milligrams per liter <br /> pCi/L= picoCuries per liter <br /> SU = standard units <br /> pmhus/c= micromhos per centimeter <br /> TSS=total suspended solids <br /> TDS=total dissolved solids <br /> Hard = Hardness <br /> Alk=Alkalinity, total as CaCO3 <br /> dis-dissolved <br /> tot=total <br /> EFRC = Energy Fuels Resources Corporation <br /> BLM = U.S. Bureau of Land Management <br /> EPA= U.S. Environmental Protection Agency <br /> Umetco= Umetco Minerals Corporation <br /> Cotter= Cotter Corporation <br /> WWE=Wright Water Engineers, Inc. <br /> Peel = Peel Environmental Services <br /> BC = Burro Canyon <br /> UBB = Upper Brushy Basin <br /> MBB = Middle Brushy Basin <br /> LBB= Lower Brushy Basin <br /> USW- Upper Salt Wash <br /> Notes: <br /> (a)The gross alpha activity standard excludes alpha activity due to radon and uranium. The majority of <br /> the gross alpha count in these samples is attributable to uranium and radon. <br /> (b)The gross beta standard is 4 millirems per year and is based on the sum of beta emitters present and <br /> a risk-based analysis with 2-liters per day drinking water intake. <br /> (c)The standard of 5 pCi/L is for combined Radium-226 and Radium-228. <br /> (d) Uranium levels in the Lower Dolores River Basin cannot be increased above 30 ug/L or background, <br /> whichever is greater. <br /> (e) Numeric table values for Segment 3a of the Lower Dolores River water quality standards. <br /> (f) Stream standards are in total concentrations unless indicated otherwise. <br /> (g)The Colorado Water Quality Control Commission has calculated a health-based standard of 0.02 ug/L <br /> for arsenic. <br /> (h)The EPA Standards are from Subpart C- uranium, radium, and vanadium ores subcategory of Title <br /> 40, Part 440 of the Code of Federal Regulations. <br /> (i)The analytical data includes results for both total and dissolved concentrations. The data has not been <br /> differentiated because the water contains very low levels of suspended solids and the dissolved and total <br /> concentrations are typically within 10% of each other. <br /> "<" indicates not detected at the analyte reporting limit shown <br /> Uranium values are presented in both mg/L and pCi/L.The units mg/L are converted to pCi/L by <br /> multiplying by 670 pCi/mg. <br />