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<br /> <br />interoffice <br />M E M O R A N D U M <br />~ III IIIIIIIIIIIII III <br />999 <br />to: Janet Binns <br />from: Kent Gorham <br />subject: 1997 Annual Hydrology Report, Mine No. 3, #C-84-062 <br />date: May 14, 1998 <br />I have completed my review of the 1997 Annual Hydrology Report for Mine No. 3. As I <br />understand it, the mine will be asking for full bond release this yeaz. Therefore, I have included a <br />section concerning the Division's final.evaluation of changes in water quality or quality at this <br />site. <br />1997 Report Review <br />The operator did not completed the spoil spring monitoring plan during the month of May <br />as required. Spoil springs were visited on the 13th and the 17th of June. The approved <br />plan calls for a full suite quality sample if the spring is discharging greater than 35 gpm <br />during the month of May. By delaying sampling into June, it is not cleaz whether the <br />springs had sufficient flow to require a full suite sample. <br />Bedrock wells, alluvial wells, spoil wells, and surface water sites were visited and <br />sampled in accordance with the approved plan. <br />The surface site, Site 29, is a rated site rather than a site measured through a controlled <br />section, like a flume. It is located downstream of mining on Middle Creek, below the <br />confluence of Middle Creek and Foidel Creek. The flow data for selected dates in 1997 <br />is shown below: <br />FLOW (cfsl <br />Mazch 25, 1997 <br />Site 700 Site 900 700 + 900 Site 29 <br />3.7 44 47.7 10.35 <br />