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• <br /> CC&V analyzes surface water samples in accordance with Colorado Regulation 32 <br /> for the constituent list below in table 3.3. Applicable Colorado Regulation 32 <br /> Stream Classifications and Numeric Standards for CC&V are included in Tables <br /> 3.4 through 3.6. <br /> Table 3.4 Arequa Gulch Surface Water Standards (COARUA22A) <br /> 22a.Mainstem of Arequa Gulch from the source to the confluence with Cripple Creek. <br /> COARUA22A Classifications Physical and Biological Metals(uglL) <br /> Designation Agriculture DM MWAT acute chronic <br /> UP Aq Life Cold 2 Temperature'C CS-II CS-II Aluminum 11000 11000 <br /> Recreation N acute chronic Arsenic 340 -- <br /> Qualifiers: D.O.(mg/L) -- 6.0 Arsenic(T) — 100 <br /> Other: D.O.(spawning) --- 7.0 Cadmium TVS TVS <br /> pH 6.0-9.0 -- Chromium Ill TVS TVS <br /> 'Uranium(acute)=See 32.5(3)for details. chlorophyll a(mg/m2) --- -- Chromium III(T) -- 100 <br /> 'Uranium(chronic)=See 32.5(3)for details. B.coli(per 100 mL) --- 830 Chromium VI TVS TVS <br /> Copper TVS TVS <br /> Inorganic(mg/L) Iron(T) — 1000 <br /> acute chronic Lead TVS TVS <br /> Ammonia TVS TVS Manganese 5903 3674 <br /> . Boron -— 0.75 Mercury(T) 0.01 <br /> Chloride <br /> Molybdenum(T) 150 <br /> Chlorine 0.019 0.011 Nickel TVS TVS <br /> Cyanide 0.005 — Selenium TVS TVS <br /> Nitrate 100 -- Silver TVS TVS <br /> Nitrite -- 0.05 Uranium varies' varies` <br /> Phosphorus --- 0.1I Zinc 3500 600 <br /> Sulfate -- — <br /> Sulfide --- 0.002 <br /> • <br /> SSR Mining Inc. PAGE 3/4 <br />