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PR-12 Exhibit 71 21 <br />4.3.3.3 Deer Creek <br />Deer Creek is an ephemeral stream that is tributary to the Dry Fork and only flows in response to storm events <br />and spring runoff. Deer Creek flows into Dry Fork, upstream of Minnesota Reservoir and downstream of the <br />Middle Dry Fork monitoring station. Deer Creek is located in the SOD area. The Deer Creek monitoring station <br />was established as a new monitoring location in the spring of 2005 (Map 1). Baseline monitoring of Deer Creek <br />began in May 2005 and included measuring flow, collecting field water quality data, and collecting samples for <br />laboratory water quality analyses from May through October 2005 (CDMG, 2005b). Routine monitoring of Deer <br />Creek began in 2006. <br />4.3.3.4 Poison Gulch <br />Poison Gulch is an ephemeral stream that is tributary to the Dry Fork and only flows in response to storm events <br />and spring runoff. Poison Gulch flows into Dry Fork between the Middle and Upper Dry Fork monitoring <br />stations. Poison Gulch is located in the SOD area. The Poison Gulch monitoring station was established as a new <br />monitoring location in the spring of 2005 (Map 1). Baseline monitoring of Poison Gulch began in May 2005 and <br />included measuring flow, collecting field water quality data, and collecting samples for laboratory water quality <br />analyses from May through October 2005 (CDMG, 2005b). Routine monitoring of Poison Gulch began in 2006. <br />4.3.3.5 Horse Gulch and East Gulch, East of Horse Gulch <br />Horse Gulch and East Gulch, East of Horse Gulch are ephemeral stream drainages that are tributary to the Dry <br />Fork and flow only in response to storm events and spring runoff. These streams flow into Minnesota Reservoir <br />• and drain the SE mine panel area and the area located within the SOD area. This monitoring station was <br />established in 1977 and is located north of Minnesota Reservoir (Map 1). <br />4.3.3.6 Upper and Lower Minnesota Creek <br />Minnesota Creek is the major stream that drains the southern WEM area. There are two monitoring stations in <br />Minnesota Creek: Upper Minnesota Creek, located upstream of Dry Fork; and Lower Minnesota Creek, located <br />downstream of Dry Fork. The Upper Minnesota Creek monitoring station was established by the USFS in 1977 <br />to collect baseline data for the SOD area and to support the Minnesota Creek Augmentation Plan. The Stevens <br />continuous recorder at the Upper Minnesota Creek monitoring site was replaced with a Global Water WL-16 <br />continuous datalogger in March 2007. The Upper and Lower Minnesota Creek stations monitor the hydrologic <br />effects of mining the SE mine panel area (Map 1) and ultimately the SOD mining. <br />4.3.4 New Stream Atonitorina Sites <br />4.3.4.1 Deep Creek Ditch <br />Deep Creek Ditch is a trans-basin diversion ditch that routes Nvater from the Little Gunnison River to upper Dry <br />Fork to provide irrigation water for users in the Minnesota Creek basin. The average annual diversions for the <br />Deep Creek Ditch are about 1,000 ac-ft. A Global Water WL-16 continuous recording device was installed in this <br />September 2007 HrdroGeo, Inc. <br />•