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beak <br />• dissolved minerals at the downstream stations. This is not an unusual <br />situation. Streams tend to pick up more dissolved materials as they flow <br />from highlands to the valleys. Certainly there is no evidence of any <br />significant pollution problem involving toxic materials. <br />The presence of increased amounts of volatile solids at stations D, <br />E, and F is indicative of higher levels of organic matter at these stations. <br />This may or may not be due to a pollution situation. <br />The samples were collected at a time of low flow when there was <br />little rainfall and no apparent surface runoff from the mine site. Sampling <br />under other conditions may produce different results. <br />r: <br />• <br />