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approximately 1200 feet north of Outfall 001. Reclaimed Outfall 004 discharged to Coal Canyon <br />near the Roadside North Portals dip section and allowed discharge of Roadside North Portals <br />inflows after being routed through pond 12 (reclaimed). Reclaimed Outfall 015 was permitted at <br />the Roadside South Mine's 2 West Portals. Outfall 016 is located at the North Decline and is <br />shown on figure 14-8. <br />Mine inflows fill abandoned portions (Northwest Intake Pool) of the Roadside South Portals to an <br />elevation of approximately 4757 feet. Water is gravity discharged from the mine through outfall <br />016 to prevent water from reaching the old Northwest Intake Portals. See Figure 14-6 Roadside <br />South Portal Mine Water Discharge System, Figure 14-7 Roadside South Portal Dewatering <br />Schematic and Figure 14-8 Mine Dewatering Plan & Profile. Outfall 016 is the primary <br />dewatering point for the mine. <br />The Northwest Intake Siphon, Outfall 002, with a capacity of about 220 gpm is a backup mine <br />dewatering system. As a backup system, the siphon will be able to handle the majority of the <br />flow if the North Decline gravity dewatering system requires maintenance due to decreasing flow <br />capacity. <br />Flow meters are installed on mine discharge points to accurately measure quantities of water <br />being discharged. Water quality of the mine discharge water is tested annually using the list <br />shown on Table 18-2 for Surface Water. <br />Monitoring on Rapid Creek and Cottonwood Creek was initially discussed in the Plan for Surface <br />Water Monitoring of Rapid and Cottonwood Creeks and a Contingency Plan for Rapid Creek <br />submitted January 28, 1983, Stipulations Response 4 and 5. A minor revision (MRO1) in March <br />1983 extended the compliance date for SR04. Crest stage gauges were installed at three (3) of <br />the monitoring sites according to minor revision MR02 in that year. In 1986, technical revision <br />TR09 eliminated monitoring on SWGS-04 and reduced monitoring on SWGS-02 and 03. Flow <br />measurements were taken bimonthly on SWGS-02 and 03 during periods of low flow (June <br />through November). Flow measurements on SWGS-01 were taken with a continuous flow <br />record when the creek was not frozen. <br />TR -67 18-2 Rev 11/15 <br />