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- ~~- <br />390 mg/l. There was no stockpiling or loading of coal at the site during this time. It <br />is not apparent that any mine related activity would have contributed to this increase. <br />In the report, the operator notes the elevation of TDS and Sulfate, and suggests that <br />additional monitoring will be necessary to determine whether or not a trend has been <br />established. I would agree with this approach. <br />- Flow data for the upstream and downstream sites on Dry Creek is consistent over the <br />period or record. <br />With the exceptions mentioned, it appeazs that water monitoring data for the H-G Loadou[ indicate <br />the PHC predictions aze valid, and that results are consistent with prior yeazs' data. <br />If you or the operator have questions or aze in need of additional information, please let me know. <br />SLLJ\021197 <br />Joe Dudash 2 February I I, 1997 <br />