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<br />TABLE 1. Regulated water quality parameters and comments about leaching results. <br />REGULATED PARAMETER AND STANDARD COMhIENTS <br /> VALUE <br />~H 6.5-9.0 About 90X, of measurements fall below 6.5 <br />Sulfate Surface water: no standard. Drinking water About 20 percent of the measuementa (from three or <br />standard = 250 mg/L. four samples) exceed 250 mg/L <br />AI Surface water standard = 87 ug/L, chronic. All of the measurements exceed the chronic standard <br /> for aquatic life; about 500% of the measurements (6 of <br /> 22 samples} exceed acute standards. <br />As Surface water standard = 0.15 mg/L No exceedences <br />Cd Surface water standard = 0.0049 mg/L About 9095 of data for l7 of 22 samples exceed <br /> standards. (Some of this may be due to a detection <br /> limit problem.) <br />Cr Surface water standard = 0.011 mg/L About 59a of the data (all from 2 samples) exceed <br /> standards. <br />Cu Surface water standard = 0.059 mg/L About 959'0 of the data for 17 of 22 samples exceed <br /> water quality standards, (Some of this may be due to a <br /> detection limit problem.) <br />Fe Surface water standard = 1 mg/L About 40% of the data exceed standards. Some <br /> exceedences are 100 to 1000 times greater than the <br /> standard. <br />Pb Surface water standard = 0.055 mg/L Data for lead are not reported. <br />Mn Surface water standard = 1.0 mg/L About 60% of the data exceed standards. <br />H~ Surface water standard = 0.00001 mg/L Data for mercury are not reported. <br />Ni Surface water standard = 0.398 mg/L Data for nickel are not reported. <br />Se Surface water standard = 0.017 mg/L Data for selenium are not reported. <br />A~ Surface water standard = 0.0019 mg/L Data for silver are not reported. <br />Zn Surface water standard = 0.519 mg/L About 9096 of the data (from 4 of 22 samples) exceed <br /> standards. <br />CONCLUSIONS <br />Cripple Creek and Victor Gold Mining Company were required to conduct leaching <br />experiments to measure the potential for generating acid and dissolved metals in surface and <br />groundwaters as a result of mining the Cresson ore body and of continuing operations at the other heap <br />leach operations within the permit boundary defined under Amendment #6 to the Cresson permit. <br />CC&V have proposed to dispose of spent ore permanently on the Heap Leach Pad. They have <br />proposed to dispose of waste rock permanently in the Arequa Gulch Overburden Storage area, within <br />the yet-to-be constructed Cresson Open Pit, and in the existing Iron Clad and Globe Hill Open Pits. <br />