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COLORADO LEGACY LAND
<br /> Table 1.Proposed Quarterly Sampling Suite
<br /> Surface Water Quality
<br /> Standard,Segment 17b, Domestic Water
<br /> Included in Supply-
<br /> Included in Current Ralston Creek(CDPHE 2018) 2018 Average Current Drinking Water 2018 Average
<br /> Surface Water Surface Water Groundwater Standards Groundwater
<br /> Analyte Units Sample Suite(s)? Acute Chronic Concentration Sample Suite? (CDPHE 2016) Concentration Recommendation
<br /> General Properties and Field Parameters
<br /> Total Dissolved Solids mg/L Yes,Table 1 none none 181.35 Yes,Table 2 none 508.93 Retain for quarterly analysis.
<br /> Yes,Table 5
<br /> (Mine Pool
<br /> Total Suspended Solids mg/L Yes,Table 1 none none 5.27 Only,Sample none 11 Retain for quarterly analysis.
<br /> ID=RAW
<br /> FEED)
<br /> Field Parameter-Temperature °C Yes,Table 1 - - - Yes,Table 2 none - Retain for quarterly analysis.
<br /> Field Parameter-Conductivity cm/ Yes,Table 1 none none - Yes,Table 2 none - Retain for quarterly analysis.
<br /> Field Parameter-pH umsles Yes,Table 1 6.5-9.0 - Yes,Table 2 6.5-8.5 - Retain for quarterly analysis.
<br /> Field Parameter-ORP mV No none none Not Sampled No none Not Sampled Include in reporting. Need data to understand if environment is oxidizing or reducing
<br /> Field Parameter-Dissolved Oxygen mg/L No none none Not Sampled No none Not Sampled Include in reporting. Need data to understand if environment is oxidizing or reducing
<br /> Major Ions
<br /> Total Alkalinity(as CaCO3) µg/L Yes,Table 1 none none 86,149 Yes,Table 2 none 197 Retain for quarterly analysis.
<br /> Bicarbonate(as CaCO3) µg/L Yes,Table 1 none none 83,269 Yes,Table 2 none 195 Retain for quarterly analysis.
<br /> Calcium µg/L Yes,Table 1 none none 23,208 Yes,Table 2 none 75,575 Retain for quarterly analysis.
<br /> Chloride µg/L Yes,Table 1 - 250,000 25,141 Yes,Table 2 250,000 21,400 Retain for quarterly analysis.
<br /> Yes,Table 5
<br /> (Mine Pool
<br /> Fluoride µg/L Yes,Table 1 none none 275 Only,Sample 4,000 1,075 Retain for quarterly analysis.
<br /> ID=RAW
<br /> FEED)
<br /> Magnesium µg/L Yes,Table 1 none none 7,095 Yes,Table 2 none 30,929 Retain for quarterly analysis.
<br /> Potassium µg/L Yes,Table 1 none none 2,017 Yes,Table 2 none 4,214 Retain for quarterly analysis.
<br /> Sodium µg/L Yes,Table 1 none none 26,742 Yes,Table 2 none 41,021 Retain for quarterly analysis.
<br /> Sulfate µg/L Yes,Table 1 - 250 28,517 Yes,Table 2 250,000 198,196 Retain for quarterly analysis.
<br /> Nutrients
<br /> Nitrate+Nitrite µg/L Yes,Table 124.10 Yes, 10,000 730.36 Nitrate= Nitrite=50 Table 2 Remove. Analyte is reported monthly for surface water under the NOV/CDO(CDPHE,
<br /> 10,0002011)Sample Suite.
<br /> •
<br /> Phosphate mg/L Yes,Table 1 none none 0.07 No none Not Sampled Remove. Analyte is reported monthly for surface water under the NOV/CDO(CDPHE,
<br /> 2011)Sample Suite.
<br /> Phosphorus mg/L Yes,Table 1 11 0.02 Yes,Table 2 none 238.57 Remove. Analyte is reported monthly for surface water under the NOV/CDO(CDPHE,
<br /> 2011)Sample Suite.
<br /> Metals Total
<br /> Aluminum µg/L Yes,Table 1 - - 84.33 Yes,'Table 2 5,000 1,013 Remove.Analyte is not a water quality parameter for Ralston Creek,Segment 17b.
<br /> Antimony µg/L Yes,Table 1 none none 0.4 Yes,Table 2 6 0.50 Remove.Analyte is reported monthly for surface water under the NOV/CDO(CDPHE,
<br /> 2011)Sample Suite.
<br /> Arsenic µg/L Yes,Table3 and Code 0.02 - 0.41 Yes,Table 2 100 1.19 Retain for quarterly analysis.
<br /> Not in Sample Remove. Total boron concentrations are several orders of magnitude below groundwater
<br /> Boron µg/L No
<br /> Suite 750 Yes,Table 5 750 0.285 criteria. Total boron is a more conservative measurement than dissolved boron,therefor
<br /> this analyte should be removed.
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