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RULE 4 PERFORMANCE STANDARDS <br /> <br />Collom – Rule 4, Page 8 Revision Date: 3/20/24 <br /> Revision No.: MR-254 <br /> <br />4.05.12 Protection of Groundwater Recharge Capacity <br /> <br />Please see Section 4.05.11 in Volume 1. <br /> <br />4.05.13 Surface and Groundwater Monitoring <br /> <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 1st through December 31st will be submitted to <br />the Division by April 1st of the following year. <br /> <br />Colowyo monitors the the following sites: <br /> <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 available <br />onsite for review as necessary. <br /> <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 /> <br />Surface Water - Eleven surface water sites will be monitored because of mining activity at Colowyo. <br />These points include five locations along Good Spring Creek, Taylor Creek, Jubb Creek, Little Collom <br />Gulch, and Collom Gulch. Field parameters and laboratory anaylsis are gathered each quarter. <br /> <br />Monitoring <br />Type <br />Monitoring <br />Location <br />Monitoring <br />Frequency <br />Quarterly Field <br />Parameters <br />Quarterly Laboratory <br />Parameters <br />Surface <br />Water <br />Upper Collom <br />Gulch (UCG)1 Quarterly Flow from Parshall <br />Flume. See List Below See List Below. <br />Surface <br />Water <br />Lower Collom <br />Gulch (LCG)2 Quarterly Flow from Parshall <br />Flume. See List Below. See List Below. <br />Surface <br />Water <br />Lower Little <br />Collom Gulch <br />(LLCG)3 <br />Quarterly Flow from Parshall <br />Flume. See List Below. See List Below. <br />Surface <br />Water <br />West Fork of <br />Jubb Creek <br />(WFJC)4 <br />Quarterly Flow from Parshall <br />Flume. See List Below See List Below. <br />Surface <br />Water <br />Confluence of <br />Jubb Creek <br />(CJC)5 <br />Quarterly Flow from Parshall <br />Flume. See List Below See List Below. <br />Surface <br />Water <br />Lower Taylor <br />Creek (LTC)6 Quarterly Flow from Parshall <br />Flume. See List Below <br />Flow from Parshall Flume. <br />See List Below <br />Surface <br />Water <br />Lower West <br />Fork Good <br />Spring Creek <br />(LWFGSC)7 <br />Quarterly <br />Flow Only taken from <br />Parshall Flume. Volume <br />added to EFGSC <br />measurement to apply to <br />actual flow for NUGSC. <br />Flow Only taken from <br />Parshall Flume. Volume <br />added to EFGSC <br />measurement to apply to <br />actual flow for NUGSC. <br />Surface East Fork Quarterly Flow Only taken from Flow Only taken from