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III IIIIIIIIIIIII III <br />999 <br />BASIN <br />RESOURCES, n+c. <br />a subsidiary of ENTECH, Inc. <br />14300 Highway 12 <br />Weston, Colorado 81091 <br />(719) 868-2761 <br />Purchasing (719) 868-2768 <br />Fax (719)868-2275 <br />June 15, 1994 <br />~~~ -~ ~~, I it r, <br />Mr. Dan Hernandez <br />Colorado Division of Minerals and Geology <br />1313 Sherman, Room 215 J~IV 2 p 1999 <br />Denver, CO 80203 <br />t;;. <br />RE: Golden Eagle Mine; Permit C-81-013 -- <br />OSM TDN 93-020-370-005 - Tatum Windmill <br />Dear Mr. Hernandez: <br />Basin Resources would like to submit the following information <br />for consideration into your investigation of the Tatum Windmill <br />water well. The assumption has been made my Mr. Tatum, OSM and the <br />Division that the water level of the well has been affected by the <br />vent shaft that is located near the windmill. Enclosed is a <br />diagram showing the relationship of the well with the shaft. <br />There is currently 43' of water in the well. The water level <br />has risen in the hole 4' since it was first measured in February. <br />There is no historical data available that indicates the pre-shaft <br />water elevation. Mr. Tatum has not supplied any type of <br />information which would indicate the water level has dropped. A <br />borehole located adjacent to the vent shaft, was drilled prior to <br />the construction of the shaft. The water zones and flows therefore <br />show the type of flows the windmill well was getting prior to the <br />installation of the shaft. As you will note, the first water <br />appears at 3' above the elevation of the bottom of the well at a <br />rate of 1/2 to 1 gpm. It would appear this is the zone the well <br />was completed in. The fluctuation in the water level indicates <br />that the well is still hydraulically connected to the supplying <br />aquifer. I am enclosing a copy of the lithology log of the <br />borehole for your review. <br />The location of the pump in the windmill well is still in <br />question. When measured in February, the depth down the sucker rod <br />was approximately 42'. Since no information is known as to the <br />type and configuration of the pumping mechanism, it is impossible <br />to determine where the bottom of the pump is located. The blockage <br />at the 42' level could be a number of things, including obstruction <br />in the pipe, top of pump unit, or some valve mechanism for holding <br />