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RULE 4 PERFORMANCE STANDARDS <br />Surface Water - Five additional surface water sites will be monitored to some degree. <br />Monitoring Monitoring Monitoring Quarterly Field Quarterly Laboratory <br />Type Location Frequency Parameters Parameters <br />Surface <br />Upper Collom <br />Total Dissolved <br />Flow from Parshall <br />Water <br />Gulch (UCG)' <br />Quarterly <br />Flume. See List Below <br />See List Below. <br />Surface <br />Lower Collom <br />Sodium (Na + ) <br />Flow from Parshall <br />Arsenic (As) <br />Water <br />Gulch (LCG)z <br />Quarterly <br />Flume. See List Below. <br />See List Below. <br />Surface <br />Lower Little <br />T = Total <br />Flow from Parshall <br />Water <br />Collom Gulch <br />Quarterly <br />Flume. See List Below. <br />See List Below. <br />(LLCG) <br />Surface <br />West Fork of <br />Flow from Parshall <br />Water <br />Jubb Creek <br />Quarterly <br />Flume. See List Below <br />See List Below. <br />Surface <br />Confluence of <br />Flow from Parshall <br />Water <br />Jubb Creek <br />Quarterly <br />Flume. See List Below <br />See List Below. <br />1. Upper Collom Gulch (UCG) represents the water quality conditions in Collom Gulch upstream of <br />the Collom Lite mining area. No impact on flow or water quality at UCG is anticipated. <br />2. Lower Collom Gulch (LCG) represents the conditions in Collom Gulch downstream of mining <br />impacts. No impact on flow or water quality at UCG is anticipated. <br />3. Lower Little Collom Gulch (LLCG) represents the conditions in Little Collom Gulch downstream of <br />all mining disturbances. Because Little Collom Gulch is ephemeral, and the mining area extends <br />nearly to the headwaters, no upstream monitoring location can be established. <br />4. West Fork of Jubb Creek (WFJC) represents conditions in the Jubb Creek watershed adjacent to the <br />mining disturbance. <br />5. Confluence of Jubb Creek (CJC) represents the aggregate water quality in the Jubb Creek basin, <br />downstream of potential mining impact areas. <br />R uarterly Surface Water Field Parameters <br />Temperature I Flow I pH I Conductivity <br />O uarterly Surface Water Laboratory Parameters <br />pH <br />Conductivity @ 25 °C <br />Total Dissolved <br />Total Suspended Solids <br />Solids <br />Calcium (Ca")' <br />Magnesium (Mg + ) <br />Ammonia (NH3)' <br />NH <br />Nitrate- Nitrite <br />Sodium (Na + ) <br />Sulfate (SO <br />Arsenic (As) <br />Iron - Total <br />Mercury (H g) <br />Manganese (Mn) ID <br />Selenium (Se) <br />Zinc (Zn) <br />D = Dissolved <br />TD = Total Dissolved <br />T = Total <br />TR = Total Recoverable <br />It is reasonable to expect potential future monitoring activities for the Collom permit expansion <br />area locations to mirror those for the existing operation as it pertains to frequency and specific <br />parameters. <br />Collom — Rule 4, Page 12 Revision Date: 1/23/09 <br />Revision No.: PR -03 <br />