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<br /> <br />Requirement <br />Requirement <br />citation Require- <br />ment <br />complied <br />with ? (yes <br />/ no) <br /> <br />Comment <br /> Surface water - Mine pumping into Fish Creek at site 115 had ceased in mid-2006, and <br /> resumed on May 8, 2008, and then continued until September 10, 2008. <br /> Comparison of field electroconductivity (EC) measurements of Fish Creek water <br /> upstream from the Fish Creek borehole (Site 16A) and downstream from it (Site <br /> 307) indicate that the water pumped in 2008 had high EC (5500 gmhos/cm) was <br /> pumped in 2008, but the pumping rate was not great enough (<0.6 cfs) to cause a <br /> noticeable EC increase in Fish Creek water which had instream flows in the <br /> approximate range of 2 cfs to 60 cfs. Pumping prior to 2006, periodically <br /> increased EC in the creek by about 700 gmhos/cm, causing Fish Creek to <br />P. Prevention occasionally reach the 1500 gmhos/cm potential material damage threshold for <br />of material irrigation water in the Fish Creek alluvial valley floor (AVF). The pumping prior <br />damage to the CDRMS regulation to 2006 also caused Trout Creek, below Fish Creek, to occasionally reach the <br />hydrologic 4.05.1(1) yes 1000 gmhos/cm potential material damage threshold for irrigation water in the <br />balance outside Trout Creek AVE The high EC levels on Fish and Trout Creek during the pre- <br />the permit area 2006 pumping probably were too infrequent to cause a 3% reduction in a farm's <br /> production (the material damage threshold). During most of the summer the EC <br /> level in those streams is much less than the material damage level. The 2008 <br /> report's graph of Trout Creek's TDS below all mining (site 1005) shows there is no <br /> apparent upward long-term trend in TDS. Foidel Creek frequently exceeds 2000 <br /> gmhos/cm downstream from the mine, but premining data indicates this is a <br /> natural occurrence, the Foidel Creek Mine's mine water pumping into Foidel <br /> Creek may have contributed to the instream EC in September 2008 (see item E, <br /> above). <br /> Ground water - No material damage has occurred, as discussed in item N above. <br />Q. Agreement <br />of observed CDRMS regulation <br />hydrologic <br />2.05.6(2) and <br />impacts with <br />" requirement to keep <br />probable <br />hydrologic <br />information current, yes <br />consequences <br />" CDRMS regulation <br /> <br />(PHC) projected 2,03.3(1) <br />in mining permit <br />Page 7