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(8.93 cis versus period of record 3.05 cfs). This is an effect of revious years with higher <br />than average precipitation. As a result of confusion over funding the data was not collected <br />for the majority of the year at station 6200 (Piceance Creek below Ryan Gulch). Industrial <br />activity at C-a and C-b Oil Shale Tracts may have influenced flows (higher} during period of <br />record, especially station 6242 near C-a tract. No significant effects on stream flow have <br />been noted or expected during WRN's operation (1990-1999). <br />Review of USGS stream water quality data indicates no significant change in stream water <br />quality through 1999. Therefore, no effect on stream water quality was noted from the <br />WRN operation. <br />6.1.5 Monitoring Wells <br />Dedicated monitoring wells have been constructed to monitor four water bearing zones, the <br />Dissolution Surface, B-Groove, A-Groove and Perched aquifers, see Figure 5-1 for location <br />of monitoring wells. The four aquifers are monitored at four sites; immediately down- <br />gradient of mining operation, up-gradient (two locations) and remote down-gradient. <br />Fifteen monitoring wells were completed with water samplers to obtain water quality <br />samples from discrete zones. A total of seventeen wells are equipped with continuous <br />water level measurement transducers and data acquisition and storage systems. <br />35 <br /> <br />