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RULE 4 PERFORMANCE STANDARDS <br />4.05.13 Surface and Groundwater Monitoring <br />Colowyo will report discharges associated with its CDPS permit (sediment pond discharges) in <br />accordance with the Clean Water Act of 1977 on a quarterly basis to the Colorado Department of <br />Public Health and Environment. Surface water and groundwater monitoring data (monitoring <br />locations listed in the tables below) is reported to the Division in an annual hydrology report. <br />Annual hydrologic reports for the period of January 1" through December 31" will be submitted to <br />the Division by April 1" of the following year. <br />Colowyo monitors the the following sites: <br />Sedimentation Ponds — Discharges associated with the sediment ponds will be monitored as required <br />under Colowyo's CDPS Permit which is issued by the Colorado Department of Public Health and <br />Environment. Colowyo will measure the quantity and quality of discharges from the permit area in <br />compliance with the CDPS permit requirements. A copy of Colowyo's CDPS permit is avaialbe <br />onsite for review as necessary. <br />At various times, Colowyo may obtain and discharge water under a CDPS minimal discharge permit. <br />In the event that water is discharged under a minimal discharge permit, Colowyo will report as <br />required by the CDPS permit. <br />Surface Water - Five additional surface water sites will be monitored as a result of mining activity into the <br />Collom Area. The existing six surface water sites will continue to be monitored to some degree. These <br />points include five locations along Good Spring Creek, its tributaries, and one location along Taylor <br />Creek. <br />Monitoring Monitoring Monitoring Ouarterly Field Ouarterly Laboratory <br />Tvne Location Freauencv Parameters Parameters <br />Surface <br />Upper Collom <br />Quarterly <br />Flow from Parshall <br />See List Below. <br />Water <br />Gulch (UCG)' <br />Flume. See List Below <br />Surface <br />Lower Collom <br />Quarterly <br />Flow from Parshall <br />See List Below. <br />Water <br />Gulch LCG <br />Flume. See List Below. <br />Surface <br />Lower Little <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 />J(WFjCe)ek <br />Quarterly <br />Flume. See List Below <br />See List Below. <br />Surface <br />Confluence of <br />Flow from Parshall <br />Water <br />Jubb Cr)5ek <br />Quarterly <br />Flume. See List Below <br />See List Below. <br />Surface <br />Lower Taylor <br />Flow from Parshall <br />Flow from Parshall Flume. <br />Water <br />Creek LTC 6 <br />Quarterly <br />Flume. See List Below <br />See List Below <br />Flow Only taken from <br />Flow Only taken from <br />Lower West <br />Parshall Flume. Volume <br />Parshall Flume. Volume <br />Surface <br />Fork Good <br />Quarterly <br />added to EFGSC <br />added to EFGSC <br />Water <br />Spring Creek <br />(LWFGSC)' <br />measurement to apply to <br />measurement to apply to <br />actual flow for NUGSC. <br />actual flow for NUGSC. <br />Flow Only taken from <br />Flow Only taken from <br />East Fork <br />Parshall Flume. Volume <br />Parshall Flume. Volume <br />Surface <br />Good Spring <br />Quarterly <br />added to LWFGSC <br />added to LWFGSC <br />Water <br />Creek <br />(EFGSC)8 <br />measurement to apply to <br />measurement to apply to <br />actual flow for NUGSC. <br />I actual flow for NUGSC. <br />Collom — Rule 4, Page 7 Revision Date: 4/18/16 <br />Revision No.: PR -04 <br />