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~ Chimney Rock Mine <br />' A hydrologic monitoring program was implemented at the Chimney Rock Mine <br />located 20 miles southwest of Pagosa Springs, Colorado, in October 1980. This program <br />' currently consists of three surface stations located on Stollsteimer Creek which flows <br />adjacent to the mined areas. The results of monitoring activities for the period of January <br />through September 1991 are summarized in the following paragraphs with summary data <br />sheets attached. <br />t Surface Water Monitoring <br />Surface water monitoring was conducted at three locations on Stollsteimer Creek (S-1, <br />' S-2 and S-3). Flow conditions were average for this season of the year. Flow measured on <br />Stollsteimer Creek range from 3.56 cfs at S-3 to 4.15 cfs at S-1. Crest gauges examined at <br />the three stations indicated no crest events during the third quarter. <br /> <br /> <br /> <br />Water quality samples were collected at each of the three surface stations during the <br />September sampling. The water is classified as a mixed calcium-magnesium/sulfate- <br />bicarbonate water with relatively low concentrations of metals and mineralization. Water <br />chemistry was consistent with previous samplings. No oil and grease was found in any of the <br />surface water samples. <br />F~~CEI~ra~,i~ <br />DEC 2 0 1991 <br />Mined Land <br />Reclamation Di~~~~'- <br /> <br />