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' fammrv 1999 Kerr Coa(Company " 1998.4nm/al Hvdrolo,ey Report "CO Perrmt h/o. G80-006 ~ Prge 11 <br />' 6.0 MINE AREA SURFACE WATER <br />The Kerr Mine experienced relatively low levels of precipitation during early 1998, resulting in <br />' limited spring runoff. The snowmelt generated discharge from the sediment ponds only in late <br />March and April for Site 301 (Pond A), Site 302 (Pond B), Site 303 (Pond C), Site 304 (Pond D), <br />Site 305 (Pond E), and Site 321 (Pond F). No flow was observed during the water year for Site <br />t 322 (Pond G). <br />The parameter list for sample analysis was reduced for the sediment ponds to include only Flow, <br />' settleable solids, and pH based on requirements set forth in the renewed CDPS permit, effective <br />July 1997, regulating post-mmmg outfalls (i.e., sediment ponds). TDS, TSS, total iron and total <br />manganese are no longer analyzed. Table 8, 1998 Surface Water Stausucs -Sediment Ponds, <br />presents a summary of the data. Field data sheets are contained in Appendix A, 1998 Field <br />' Data, and results from laboratory testing are presented in Appendix F, 1998 Mine Area Surface <br />Water Quality Analyses. <br />' Surface Water Monitoring Stations 300, 306, 314, and 327 experienced flow from spring runoff <br />as presented on Table 9, 1998 Surface Water Stausucs -Selected Mine Area Surface Stattons. <br />Field data collected at these stations are presented in Appendix A, 1998 Field Data, and results <br />' from the laboratory analyses are presented in Appendix F, 1998 Mine Area Surface Water <br />Quality Analyses. <br />Due to minimal flow during the 1998 water year for stations 300, 306, and 314, seasonal <br />variations in flow and water quality are illustrated only for station 327. Graphs of flow, pH, <br />TSS and TDS vs. EC are presented in Appendix G, 1998 Mine Area Temporal Trend Analysis. <br />The flow data points shown as zero represent either no flow or a trace of Flow. For water <br />quality parameters, zero indicated chat the value was below laboratory detection limits. Please <br />refer to Table 9 for actual values. <br />1 <br /> <br /> <br />t <br /> <br />CIS <br /> <br /> <br /> <br />Montgomery Watson "P.O. Bax 7740]8 'Steamboat Springs, Colorado 80477 "(970J 8796160 <br />Y' 1!I]\Ann.ul Pryort\/991\I Wf MJrdgp Fryvrt <br />Ihl/94 dv <br />