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' ~ • <br /> December 23, / 999 Page l l <br />t Control Commission: Regulat ion No. 41-Basic Standards for Ground Water and Regulation <br /> No. 31-Basic Standards and M ethodologies for Surface Water. <br />' <br />' Table 2. Water Quality Parameters List 1 (WQl) <br /> A nalytical Laboratory Parameters <br /> Instrument <br />' Minimum <br /> Constituent Units Detection Standards <br /> Limit (IMDL) <br />' pH standard units 0.1 6.5-8.5 DW and AG <br /> Conductivity, 25°C mmhos/cm 1 <br /> Total Dissolved Solids <br />Total Alkalinity mg/L <br />mg/L l0 <br />2 <br /> Anion and Cation Balance No units - <br /> Dissolved Sodium mg/L 0.02 <br />t Bicarbonate as alkalinity mg/L <br /> Carbonate as alkalinity mg/L - <br /> Dissolved Fluoride mg/L 0.00001 2.0 AG, 4.0 HH <br />' Dissolved Chloride mg/L 5.0 250 DW <br /> Dissolved Boron mg/L 0.001 0.75 AG <br /> Dissolved Magnesium mg/L 0.2 <br />' Dissolved Calcium mg/L 0.02 <br /> Dissolved Silica mg/L 0.2 <br /> Dissolved Potassium mg/L 0.3 <br />' Dissolved Sulfate mg/L 0.0005 250 DW <br /> Dissolved Strontium mpJL 0.01 <br />' Field Parameters <br />pH standard units 0.1 6.5-8.5 DW and AG <br />Conductivity, 25°C mmhos/cm 1 <br />' Temperature °C - <br />IMDL = lns[rumen[ Minimum De[ection Limi[ <br />DW = Saje Drinking Water Standard <br />AG = Agricultural Standard <br />HH = Hvman Health Standard <br />Standards from Colorado Department ojpublic Health and Environment, Water Quality Control Commission, <br />' Regulation No. 41, "The Basic Standards for Groundwater. " <br /> <br />1 <br /> <br /> <br />Agapito Associates, Inc. <br />