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Sample <br />Location <br />Geomorphic' <br />Setting ' <br />Elevation <br />(ft ems() <br />Sample <br />Date <br />Flew <br />Rate <br />(Wm) <br />= Temperature <br />( °C) <br />pH <br />Specific <br />conductance <br />(US /cm) <br />Dissolved <br />Oxygen <br />(mg /I) <br />Lower <br />Incised <br />6,615 <br />12/08/04 <br />2.5 <br />0.2 <br />1,199 <br />9.78 <br />Collom <br />stream <br />1/27/05 <br />l <br />3.1 <br />1,144 <br />8.49 <br />Gulch <br />channel in <br />2/16/05 <br />110 <br />3.0 <br />N <br />cci <br />1,120 <br />1.36 <br />valley <br />3/14/05 <br />135 <br />3.7 <br />1,150 <br />1.17 <br />4/19/05 <br />90 <br />14.2 <br />1,180 <br />1.39 <br />Lower <br />Incised <br />12/08/04 <br />- <br />- <br />- <br />- <br />Little <br />stream <br />- <br />- <br />- <br />- <br />Collom <br />channel in <br />2/16/05 <br />a <br />- <br />- <br />- <br />- <br />Gulch <br />narrow valley <br />3/14/05 <br />- <br />- <br />- <br />.. <br />4/19/05 <br />- <br />- <br />- <br />.. <br />Confluence <br />Incised <br />6,660 <br />12/05/04 <br />5 <br />2.2 <br />Icy as .- M N <br />h °' <br />1,200 <br />6.79 <br />Jubb <br />stream <br />2/2/05 <br />10 <br />0.2 <br />2,206 <br />8.08 <br />Creek <br />channel in <br />2/18/05 <br />110 <br />1.6 <br />1,920 <br />0.83 <br />valley <br />3/14/05 <br />90 <br />2.9 <br />2,080 <br />1.22 <br />4/20/05 <br />90 <br />7.1 <br />2,180 <br />1.32 <br />1 <br />'it <br />alsh <br />Environmental Scientists and Engineers, LLC <br />rom f a bl e 4. In <br />P: nISK. FA Final MAI -% -EA Cullum 08_91 x. Jac <br />Table 3 Stream Attributes (continued) <br />The following are descriptions of the major streams in the proposed lease area (WMC <br />2005): <br />Jubb Creek <br />Jubb Creek is located on the eastern side of the proposed lease area. Above the USGS <br />gaging station, it drains approximately 7.53 square miles of hilly plateau terrain. The <br />elevation of the stream channel ranges from about 6,400 feet amsl where it crosses <br />Moffat County Road 51 north of the Collom Syncline, to approximately 7,600 feet near <br />the summit of the Danforth Hills. The two forks of Jubb Creek (East and West) join at <br />approximately 6,700 feet amsl. The stream channel runs in a northeasterly direction <br />across the Collom Syncline before joining Wilson Creek several miles northeast of the <br />Trout Creek Sandstone outcrop. Historical flow data for Jubb Creek for the period 1975 <br />through 1981 were collected at USGS gaging station 9250610. The data indicate that <br />flow occurs from the spring through the fall, with maximum in May and June. Jubb <br />Creek generally has no flow during the winter. From December 2004 to April 2005, flow <br />ranged from approximately 5 to 110 gallons per minute (gpm) at sample location CJC. <br />Flow in Jubb Creek is partially controlled by several small stockponds located on both <br />the East and West forks of Jubb Creek. At the time of monitoring, sediment transport was <br />low, as would be expected except during flood events. <br />Little Collom Gulch <br />Little Collom Gulch is located near the center of the proposed lease area. Above its <br />confluence with Collom Gulch, it drains approximately 2.9 square miles of hilly terrain. <br />The elevation of the stream channel ranges from about 6,520 feet amsl at the confluence <br />with Collom Gulch to approximately 7,800 feet amsl near the summit of the Danforth <br />Hills. The stream channel runs in a northeasterly direction through hilly terrain until it <br />turns to the west and joins the lower reach of Collom Gulch. Little Collom Gulch is an <br />ephemeral stream throughout its entire length. During the period of December 2004 to <br />27 <br />