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COLORADO LEGACY LAND <br /> Table 1.Proposed Quarterly Sampling Suite <br /> Surface Water Quality Standard, <br /> Segment 17b, Domestic Water <br /> Included in Current Included in Current Supply-Drinking <br /> Surface Water Ralston Creek CDPHE 2018 Groundwater Sample Water Standards <br /> Anal to Units Sample Suites ? Acute Chronic Suite? CDPHE 2016 <br /> General Properties and Field Parameters <br /> Total Dissolved Solids mg/L Yes,Table 1 none none Yes,Table 2 none <br /> Yes,Table 5(Mine <br /> Total Suspended Solids mg/L Yes,Table 1 none none Pool Only,Sample ID= none <br /> RAW FEED <br /> Field Parameter-Temperature °C Yes,Table 1 Yes,Table 2 none <br /> Field Parameter-Conductivity µS/cm Yes,Table 1 none none Yes,Table 2 none <br /> Field Parameter-pH unitless Yes,Table 1 6.5-9.0 Yes,Table 2 6.5-8.5 <br /> Field Parameter-ORP my No none none No none <br /> Field Parameter-Dissolved mg/L No none none------7 No none <br /> Oxygen <br /> Major Ions <br /> Total Alkalinity(as CaCO3) µg/L Yes,Table 1 none none Yes,Table 2 none <br /> Bicarbonate(as CaCO3) µg/L Yes,Table 1 none none Yes,Table 2 none <br /> Calcium µg/L Yes,Table 1 none none Yes,Table 2 none <br /> Chloride µg/L Yes,Table 1 250,000 Yes,Table 2 250,000 <br /> Yes,Table 5(Mine <br /> Fluoride µg/L Yes,Table 1 none none Pool Only,Sample ID= 4,000 <br /> RAW FEED <br /> Magnesium µg/L Yes,Table 1 none none Yes,Table 2 none <br /> Potassium µg/L Yes,Table 1 none none Yes,Table 2 none <br /> Sodium µg/L Yes,Table 1 none none Yes,Table 2 none <br /> Sulfate µg/L Yes,Table 1 250 Yes,Table 2 250,000 <br /> Nitrate+Nitrite µg/L Yes,Table 1 Nitrate=10,000 Nitrite=50 Yes,Table 2 <br /> Phosphate mg/L Yes,Table 1 none none No <br /> Phosphorus mg/L Yes,Table 1 11 Yes,Table 2 <br /> PAGE 5 OF 24 <br />