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• HYDROLOGY MONITORING REPORT <br />2008 WATER YEAR <br />COLONY SHALE OIL PROJECT <br />EXXONMOBIL CORPORATION <br />PARACHUTE, COLORADO <br />C <br />ExxonMobil's Colony Shale Oil Project has an on going Hydrological Monitoring <br />Program. This report contains hydrological data collected during the 2008 Water Year. <br />The hydrological data is recorded in a computer spreadsheet database (Quattro Pro). <br />Daily stream flow data is compiled in a Basic program entitled "Water Table Manager". <br />The records can be transferred to spreadsheet format with the Basic program entitled <br />"Water Table Manager Library". <br />STREAM FLOW MONITORING SITES <br />Table 1. <br />STREAMFLOW MONITORING STATIONS <br />STATION LOCATION DRAINAGE <br /> AREA <br />FIR NE SE Seel 8, 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 /> <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, T5S. 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 - Discontinued October, 1992 <br />Colony Tract has five streamflow <br />monitoring sites. Table 1 <br />summarizes station location, <br />drainage area, control, and <br />recording equipment. The Middle <br />Fork @ Lab monitoring site, <br />started operation on October 1, <br />1992 and the Middle Fork at Dam <br />station was discontinued at that <br />time. The years of record for the <br />Middle Fork at Dam station are <br />from July 3, 1983 to September <br />30, 1992.