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<br />Mr. Marcus Middleton <br />Monitoring Frequency <br />Ponds <br />1. All requirements were met. <br />Springs <br />1. All requirements were met. <br />Water Quality Analysis <br />-2- <br /> <br />August 19, 1991 <br />Bedrock Wells <br />1. For the September 28, 1990 sample of Well 008-SP-5a the results for <br />dissolved iron and molybdenum are missing. Please explain. <br />Alluvial Wells <br />1. Quality is reasonable and appears in line with baseline values; <br />however, a trend is apparent concerning slightly higher iron and <br />molybdenum. <br />Spoil Wells <br />1. It is noted that conductivity, TDS, and hardness are very high; <br />however, no undesirable impact at Site 29 is apparent. <br />Surface Water <br />1. After reviewing 1989 Annual Hydrology Report and associated <br />questions raised by the Division, it is apparent that there is some <br />tonflicting information concerning flow and increased salt content <br />in Foidel Creek. Therefore, the following is an attempt to clarify <br />the Division's concerns on this matter. <br />It is understood that the year-round flow in Foidel Creek since <br />1985 is due to upstream mining activities. This is stated by CYCC <br />in the text in the 1990 Annual Hydrology Report. It is not true <br />that conductivity is showing an increase at Site 700 as stated in <br />the October 8, 1990 response to the Division's 1989 Annual <br />Hydrology Report questions. It is apparent from Figure 29 that <br />Site U.S.G.S. 900 and Site 29 show a very simi'.ar trend in <br />conductivity, while Site 700 shows no change in conductivity over <br />time. <br />It is alto highly unlikely that "regional climatic changes" <br />(1989 Annual Hydrology Report response) would impact Foidel Creek <br />drainage with no impact present in any data from Middle Creek <br />sites. It does seem apparent, though, that Mine No. 3 is having <br />little, if any, hydrologic impact, based on the information to <br />date. However, the upstream mining activities referred to in this <br />report 'will certainly be closely e.<amined as to the emerging trend <br />concerning increased TDS and dissolved solids on Foidel Creek. <br />