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i ~ <br />Other than the Colorado River below the mine, no other <br />surface water sites were monitored during this period. <br />The Colorado site (CR-2) was monitored quarterly for <br />field parameters and annually for water quality. <br />2.2 Discussion of the Data <br />Although some data was missed during 1965, data collected <br />from bedrock monitoring wells SK-3.75 and SK-3H are con- <br />sistent with that collected during the baseline period. <br />The slightly higher specific condutivity measured in l- <br />and 3-SY.-3H during fall of 1985 probably reflects mixing <br />of the three zones during much of 1985 when the monitor- <br />ing system was inactive and the packers were allowed to <br />deflate. The system has been allowed to flow since then <br />and future readings should reflect non-mixed waters. <br />Refer to Attachments A,B, and C for data updates on these <br />wells. <br />The three wells which monitor saturated unconsolidated <br />material in the facilities area (Ob7-4L, OL9-8, and 0[•7-14) <br />~~ere monitored throughout the operational monitoring <br />program in 1985. The water level responses in OW-4L and <br />8 seem to be related to flow in the Vulcan Ditch. <br />Although detailed ditch flow records are not available <br />for 1985, water levels respond qualitatively to periods <br />of irrigation and ditch use (Refer to Section 3.D for <br />discussion of ditch use). Normally, flow in the ditch <br />is discontinued in late summer, however, in 1985, the <br />ditch was re-cpened on approximately August 1 after 6 <br />weeks of being shut-down for repairs. The ditch remain- <br />ed open through August and September to irrigate fields <br />which had dried out during repair of the ditch and in <br />anticipation of construction water needs. Continued use <br />of the ditch is reflected in the rising waters in both <br />wells throughout the end of 1985 (Attachment D, Figure 1). <br />3 <br />