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• HYDROLOGY MONITORING REPORT <br />2010 WATER YEAR <br />COLONY SHALE OIL PROJECT <br />EXXONMOBIL CORPORATION <br />PARACHUTE, COLORADO <br />• <br />• <br />ExxonMobil's Colony Shale Oil Project has an on going Hydrological Monitoring <br />Program. This report contains hydrological data collected during the 2010 Water Year. <br />The hydrological data is recorded in a computer spreadsheet database (Excel). Daily <br />stream flow data is compiled in a Basic program entitled "Water Table Manager". The <br />records can be transferred to spreadsheet format with the Basic program entitled "Water <br />Table Manager Library". Most of the older Basic program data has been imported to an <br />Excel spreadsheet. <br />STREAM FLOW MONITORING SITES <br />Table 1. <br />STREAMFLOW MONITORING STATIONS <br />STATION LOCATION DRAINAGE <br /> AREA <br />FIR NE SE Sec 18, T5S, R96W 31.7 Sq. Miles <br />East Middle Fork (Approx.) <br />F8R NE NE Sec 6, T5S, R95W 4.5 Sq. Miles <br />Middle Fork (Approx.) <br />F13R NE SW Sec 1, T5S, R96W 3.0 Sq. Miles <br />Lower Davis Gulch (Approx.) <br /> 2.5 Sq. Miles <br />Upper Davis Gulch NE NW Sec 1, T5S, R96W (Approx.) <br />Upper Middle Fork SW SE Sec 6, T5S, R95W 5.9 Sq. Miles <br />@ Dam Site (Approx.) <br />Middle Fork SW SW Sec. 18, TSS. R95W 14.9 Sq. Miles <br />@ Lab Site (Approx.) <br /> <br />STATION CONTROL OR RECORDING <br /> MEASURING DEVICE EQUIPMENT <br />FIR 90 degree V-notch Weir Stevens Type A-71 <br />East Middle Fork (Open channel) Water Level Recorder <br />F8R 90 degree V-notch Weir Stevens Type A-71 <br />Middle Fork (or 36" Parshall flume) Water Level Recorder <br />F13R 90 degree V-notch Weir Stevens Type A-71 <br />Lower Davis Gulch (or 36" Parshall flume) Water Level Recorder <br /> 90 degree V-notch Weir Stevens Type A-71 <br />Upper Davis Gulch (or 48" Parshall Flume) Water Level Recorder <br />Upper Middle Fork 90 degree V-notch Weir Stevens Type A-71 <br />@ Dam Site (or 36" Parshall flume) Water Level Recorder <br />Middle Fork 90 degree V-notch Weir Stevens Type A-71 <br />@ Lab Site (or 48" Parshall Flume) Water Level Recorder <br />Middle Fork @ Dam Site - Discont inued October, 1992 <br />Colony Tract has five stream flow <br />monitoring sites. Table 1 summarizes <br />station location, drainage area, control, <br />and recording equipment. The Middle <br />Fork @ Lab monitoring site, started <br />operation on October 1, 1992 and the <br />Middle Fork at Dam station was <br />discontinued at that time. The years of <br />record for the Middle Fork at Dam <br />station are from July 3, 1983 to <br />September 30, 1992.