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COLORADO LEGACY LAND <br /> SCHWARTZWALDER MINE <br /> TABLE E-4. MINE PERMIT#M-1977-300,QUARTERLY SURTACE WATER AND GROUNDWATER SAMPLE SUMMARY <br /> Surface Water Quality <br /> Surface Water Quality Standards(CDPHE,2018)^ Standard,Segment 17b,Ralston Creek <br /> (CDPHE,2019) B Colorado <br /> Anal a CAS No. Units 2 Aquatic Life 2 Groundwater Sample Analytical Detection Sample Suite <br /> 1't Human Health Aquatic Life (Dissolved Quality Standards Type Method(s) Limit Name <br /> (Total Concentrations) (Dissolved Concentrations) Concentrations (CDPHE,2016)c <br /> Domestic Chronic <br /> Water Agriculture Water+ Acute 30-Day Acute Chronic <br /> Supply Fish 1-Day Average g <br /> General Properties and Field Parameters <br /> 400 mg/l or 1.25 times <br /> Total Dissolved Solids TDS mg/L _ the background level, Grab SM2540C 20 Sample Suite#3 <br /> whichever is least <br /> restrictive <br /> Total Suspended Solids - mg/L - - _ Grab SM2540D 5 Sample Suite#3 <br /> Field Parameter-Temperature Temp °C - - Sample Suite#3 <br /> Field Parameter-Conductivity - µS/cm - - Sample Suite#3 <br /> Field Parameter-pH pH unitless 6.5 -9.0 6.5-8.5 N/A-Field Parameter Sample Suite#3 <br /> Field Parameter-ORP mV - _ Sample Suite#3 <br /> Field Parameter-Dissolved <br /> Oxygen DO mg/L 3 6.0-7.0 <br /> Sample Suite#3 <br /> Major Ions <br /> Total Alkalinity(as CaCO3) CASID10001 mg/L - - Grab SM2320B- 2 Sample Suite#3 <br /> Bicarbonate(as CaCO3) 3983-19-5 mg/L - Grab Titration Sample Suite#3 <br /> Calcium 7440-70-2 mg/L - - - - Grab M200.7 ICP 0.1 Sample Suite#3 <br /> Chloride 7782-50-5 mg/L 0.25 - 250 250 Grab SM4500 0.5 Sample Suite#3 <br /> Fluoride 16984-48-8 mg/L - - 4 Grab SM450OF 0.11 Sample Suite#3 <br /> Magnesium 7439-95-4 mg/L - <br /> Grab M200.7 ICP 0.2 Sample Suite#3 <br /> Potassium 7440-09-7 mg/L - Grab M200.7 ICP 0.2 Sample Suite#3 <br /> Sodium 7440-23-5 mg/L - - - Grab M200.7 ICP 0.2 Sample Suite#3 <br /> D516-02/-07/- <br /> Sulfate mg/L 250 Grab 11 1 Sample Suite#3 <br /> 14808-79-8 0.25 250 Turbidimetric <br /> Nutrients/Other <br /> Boron 7440-42-8 mg/L - 5 0 Grab M200.7 ICP 0.02 Sample Suite#3 <br /> Nitrate+Nitrite Total N mg/L 10 - - 10 Grab M365.3 2.02 Sample Suite#5 <br /> Phosphate 14265-44-2 mg/L - - - _ Grab Calculation Calculation Sample Suite#3 <br /> Phosphorus 7723-14-0 mg/L 0.11 - 0. ' - Grab M365.1 0.01 Sample Suite#3 <br /> Cyanide(weak acid dissociable) 57-12-5 mg/L - 0.005 - 0.2 Grab SM4500 0.003 Sample Suite#3 <br /> DECEMBER2020 31 <br /> AMENDMENT 5 <br />