1997-06-09_REPORT - M1977378 - Laserfiche WebLink

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STUDY UPDATE: Attached in the Appendix is the data collected through March 1996 for the seep, spring and flowing adit inventory and monitoring as required by TR-14 During the report year no new monitoring sites were added and no sites were deleted. Sunnyside visited all sites twice during the report year, collected field data and sampled each site for lab parameter analysis if flow existed. This exceeded the permit requirement of collecting samples for analysis from 20 percent of the sites during each monitoring year such that all sites had been sampled during a 5 year period. Data Analysis: Seep, spring and flowing adit samples were taken in early summer, when the sites became accessible and snow-melt would not bias the samples, and fall before snowfall was expected to shut off site access. The sampling efforts were spread over approximately a month for each round. Mid-July was an approximate mid-point of the early summer sampling round and late-September for the fall sampling round. The rune pool elevation was approximately 10,850 feet MSL in mid-July and 11.060 feet MSL in late-September. Although it is believed by Sunnyside that the mine pool could not have influenced 1996 sample results, these elevations have been included for reference as well as a monitoring site coordinate table arranged by increasing elevation. There were 11 sites below the mid-July pool elevation and 12 sites below the late-September pool elevation. No sites showed monitoring parameter results that would indicate an impact from the rising mine pool. Included in the Appendix is the monitoring program that Sunnyside is following and a table listing the sample count, mean value, standard deviation, maximum value and minimum value for each sample parameter at each monitoring site. Sunnyside will be using this table for comparison of future samples to background quality. B-9