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Gulches A, B, C, & D were monitored quarterly at the designated upstream and <br />downstream monitoring locations shown on Map 9 exceptA-Gulch does not have an <br />upstream monitoring point. Field parameters were measured each quarter. A full <br />suite sample from List 1 was obtained semi-annually during the second and fourth <br />quarters. It has been determined gulch monitoring has not provided any useful <br />information so monitoring of the gulches has been permanently suspended. <br />West Terror Creek (SW -1 and SW -12) will be monitored quarterly for field <br />parameters. A full suite sample from List 1 will be obtained annually during the <br />second or fourth quarter. Flows in the West Fork of Terror Creek, collected at flume <br />monitoring stations SW -1 and SW -12, will be available in real time, updated hourly. <br />Real time data will not be collected during periods of temporary cessation. Real time <br />data will not be available during high flow, freezing conditions or when real time data <br />equipment is inoperable. In the absence of real time data, flow will be measured <br />monthly, increasing to weekly when the West Fork of Terror Creek lies within the <br />predicted angle of draw. Weekly flow measurements will be initiated three months <br />prior and continue for six months following longwall extraction under the West Fork <br />of Terror Creek. Field parameters will be collected monthly during this nine month <br />period. There will likely be periods of time during the winter months when the flumes <br />are inaccessible. <br />Ephemeral channels EPH-1 through EPH-9 are located in the Spruce Stomp <br />expansion area and are shown on Map 9. The Operator will endeavor to sample <br />water from each ephemeral channel for complete chemical analysis and field <br />parameters twice a year; once during snowmelt, and once during a storm event. <br />Monitoring ephemeral channels EPH-1 through 9 will be temporarily suspended <br />since mining will not be conducted under these channels for the foreseeable future. <br />Upstream and Downstream Stevens Gulch (SW -11 & SW -5) will be monitored <br />quarterly for field parameters. A full suite sample from List 1 will be obtained <br />annually during the second or fourth quarter. <br />Terror Creek D32-4, SW -2, D21-1 will be monitored quarterly for field parameters. A <br />full suite sample from List 1 will be obtained annually during the second or fourth <br />quarter. <br />Terror Ditch SW -10 will be monitored quarterly for field parameters. A full suite <br />sample from List 1 will be obtained annually during the second or fourth quarter. <br />Alluvial wells 1 through 9, 11, 12 and 14 through 17 will be monitored quarterly for <br />field parameters. A full suite sample will be obtained annually during the second or <br />fourth quarter. <br />TR -117 2.05-126 12/18 <br />