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• <br />• <br />• <br />February 1995 <br />H-G Coal ]994 Annual Rer/amatton <br />3.0 SPRING AND SEEP MONITORING <br />3.1 REQUIREMENT <br />• 3 <br />Between April 1 and May IS a spring and seep monitoring plan is [o be implemented on the <br />reclaimed areas. <br />For springs having a flow greater than 75 gallons per minute (gpm), a "full suite" fist of 25 <br />parameters are to be analyzed. These springs will also be sampled monthly for the field <br />parameters pH, conductivity, temperature and estimate of flow. <br />If no flow exceeds 75 gpm, an annual full suite analysis for the single largest spring will be <br />completed. <br />Mitigation involves [he subsequent evaluation of each spring or seep and the subsequent <br />determination of the need for remedial anion. <br />3.2 RESPONSE <br />On May 5, 1994, a spring and seep survey was completed at the Hayden Gulch minesite. A <br />brief discussion of each site follows. <br />RSP-1 - Slight decrease in flow from the previous year. Essentially no change in <br />conductivity and pH from previous years. No mitigation required. <br />RSP-2 - Slight decrease in flow from previous years. Conduttivity and pH within <br />ranges observed for previous years. No mitigation required. <br />RSP-3 - Flow decreased significan[ly from previous year. Conductivity and pH <br />remain within previously observed ranges. No mitigation required. <br />RSP-4 - Flow decreased slightly from previous year. Conductivity and pH were <br />within previously observed ranges. No mitigation required. <br />RSP-5 - Seep was dry. <br />RSP-6 - Seep was dry. <br />Summaries of the field and lab analysis can be found in Exhibit 5. Refer to [he 1987 Annual <br />Reclamation Report for a more complete discussion of each site. <br />H:~817\ANNREC.RI'T <br />OL10/95 17:05pm mp51/anc <br />TenaAfat>ix Inc. • P.O. Box 774018 • Stmmboat Springs, Cola>ado 80477 '~ (303J 8796160 <br />