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<br />-6- <br />Comments and Recommendations <br />1) Monitoring wells No. 5 and Okie Plaza, completed in the Trout Creek <br />Sandstone, are sampled for water quality. Even though these wells are pumped <br />and used as a water supply, water levels should be measured on a quarterly <br />basis. Measurement should be made ideally when the wells are not being <br />pumped. At the present time MLRD has no water level data on the Trout Creek <br />Sandstone and therefore cannot adequately assess hydrologically its <br />relationship to the No. 5 Mine. <br />Water levels from these wells should be graphed and presented in the 1986 <br />Annual Hydrologic Report. <br />2) There are three monitoring wells completed in the Twenty Mile Sandstone. <br />Only one of these wells, 259, is currently monitored for water levels. Well <br />84-01 is supposed to be monitored for water levels. No water level <br />measurements were included in the 2nd quarter hydrologic data submitted to <br />this office. This well should be monitored for water levels as stated in the <br />monitoring program. Water levels in the No. 9 Well should also be measured on <br />a quarterly basis. A yearly hydrograph of these values should be made and <br />submitted to the Division in the Annual Hydrologic Monitoring Report. , <br />3) All mine discharge should be measured volumetrically not as an <br />instantaneous rate of flow. Empire Energy has been out of compliance with <br />Stipulation 4(A) which states that Empire Energy shall determine the volume of <br />water pumped from mines on a weekly basis. From Figure 15 it appears that <br />Empire Energy installed a totalizing flow meter for the No. 5 Mine some time <br />in the spring of 1984. Before that time all discharge measurement at the No. <br />5 and No. 9 Mines were made on instantaneous measuring devices <br />4) No cumulative water quality data for surface water monitoring sites, WF-1 <br />and WF-2 were included in the 1984 Hydrologic Monitoring Report. The only <br />data submitted in this report from these surface water sites were summarized <br />water quality data presented in Tables 26-28. <br />srs <br />5830E <br />