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<br />R. G. OTTO & ASSOCIATES <br /> <br />piles when considered on as annual basis. Surface (or ~~zound <br />water) inputs are not adversely influencing the long-team water <br />quality of Ralston Creek. There may be a slight seasoa~il increase <br />in the concentration of uranium between the two samplia~~ locations <br />employed in this survey (#301, #302). This slight increase, if it <br />occurs at all, cannot be attributed to the presence of Ghe waste <br />rock piles or to natural surface or ground water inputs between <br />the sampling locations on the basin of available data. However, <br />uranium concentrations clearly do not ezceed the Colorado Water <br />Quality standard is any case. <br /> <br /> <br />L2 <br />