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Ci <br />-2- <br />C, <br />J <br /> <br />no discussion or projections will be made in this report concerning this <br />data. This information is supplied for the sake of completeness only. <br />Ground Water Quality <br />Appendix IV contains all of the quality data and field parameter data <br />for the following ground wells and springs: Hole No:l, Hole No.3, Hole No.4, <br />Hole D-lA, Hole D-2A, Loadout Well ill, Loadout Well H2, Loadout Well N3, <br />Spring SP-1 and Spring Sp-2. <br />Last year the quality of water in Hole 1 was getting wors~ every time <br />it was sampled. As will be noted in Appendix IV the quality of this water <br />on December 31, 1985 was still very bad. After talking with the Division, <br />it was determined that the sampling techniques that were being used to <br />obtain the water from this well needed to be modified. In the past approx- <br />imately 10 to 15 tubes of water were taken from the hole prior to obtaining <br />a sample for the lab. Due to the extreme depth of this hole, this was not <br />,.enough water removal. Snowmass personal devised a new sampling system that <br />allowed approximately 1; times the well volume to be evacuated in a very <br />short time. As can be seen on June 11, 1985 the water quality in this well <br />was very similar to the pre-permit mean data after proper evacuation of <br />the well. It appears that the mine is having no effect on this well: In <br />the future, Snowmass will continue to adequately evacuate all ground water <br />monitoring wells prior to obtaining a sample. <br />In order to determine if Snowmass' refuse pile is having any effect <br />on the alluvial ground water a comparison between the quality of water in <br />wells D-lA and D-2A needs to be performed. By doing this it is apparent <br />that the levels of Calcium, Magnesium, Sulfate and Dissolved Solids are <br />higher in Well D-lA than in well D-2A. However, by looking at the pre-permit <br />mean data and standard deviations all of these elements are consistant <br />with the data obtained prior to construction of the refuse pile. It appears <br />that the refuse pile is having no effect on the local ground water. <br />All of the data for the other monitoring wells is consistant with <br />the pre-permit data. <br />Mine Inflows <br />Appendix V contains data from this years mine inflow study. Due to the <br />very wet winters we have experienced in the last few years the No. 1 and <br />No. 3 mines had their greatest inflows of water. This large inflow caused <br />flooding problems in No. 3 mine and caused the abondoned "B" seam above <br />the No. 1 mine to leak into our active workings. `t <br />A few areas in No. 1 mine that have always been dry began to emit water. <br />This is due entirely to the heavy winter snowpacks. The amount of inflow <br />should begin to decrease as we begin to experience normal winters. <br />• As can be seen from the data, the inflow amount estimated in the No. 1 <br />mine almost matches the amount of water being pumped from the mine. This <br />is purely coincidental; the accuracy of estimating inflows over a large <br />area are at best a close approximation. <br />