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IM REPLY REFER r0: <br />iiiiiiiiiiiiiiuiii <br />999 <br />United States Department of the Interior <br />GEOLOGICAL SURVEY <br />BOX 25046 M.S. _~5,_ <br />DENVER FEDERAL CEN7ER <br />DENVER, COLORADO 80225 <br />Water Resources Division <br />Colorado District <br />October 10, 1991 <br />Mr. James A. Pendleton <br />TAKES ~ <br />PRRIEIN~ <br />AMERICA <br />~ ~ <br />R~ ^ <br />... .~ <br />.... ..-- l' I• <br />Mined Land Reclamation Division - <br />1313 Sherman Street, Room 215 .:.'ff.~~'~~,~. <br />Denver, Colorado 80203-2273 <br />Dear Jim: <br />This letter is to inform you that we have completed all site abandonment <br />procedures as requested by Gary Melvin in his letter dated July 26, 1989, and <br />by Brian Dunfee in his letter dated September 20, 1990. I am sending this <br />letter to you because previous letters on this matter have been sent from <br />representatives of Peabody Coal Company through you. Please advise the <br />appropriate representatives Erom Peabody Coal Company that the USGS has <br />completed the commitment to abandon wells and restore sites to conditions <br />previously agreed upon. Accordingly, we request that the USGS be released from <br />Further responsibility related to monitoring wells at Semi Mine. <br />Specific actions are as Follows: ~r <br />1. Wells SSU287, SSD487, SZL287, SZI287, SZW287, and SZU287 have been <br />abandoned using State of Colorado guidelines. A stake has been placed <br />at the location of each abandoned well site. The Baski flowing well <br />caps have been left at all the remaining flowing well sites. Each <br />well was pressurized and each flowing well cap was tested on October <br />1st and 2nd, 1991. All wells and caps were in good operating order at <br />that time. I recommend that someone from Seneca Mine recheck the <br />wells before December to ensure the wells are still properly <br />pressurized for winter. <br />2. The soil moisture access tubes have been removed. <br />3. The climate station and precipitation gages have been removed. <br />4. The western weir at the Cow Camp Creek site was removed. <br />5. Recorders and recorder houses have been removed from the wells <br />completed in reclaimed spoil <br />6. Recorders have been removed from the Cow Camp Creek and Spring Creek <br />springs. The recorder houses, staff gages, weirs, and associated <br />structures have been left as requested by Peabody Coal Company <br />representatives. <br />7. A11 construction and other miscellaneous materials have been removed <br />Erom the sites unless otherwise requested. For example, barrels used <br />to protect the wells at Bond Creek and fence posts used to support <br />nitrogen tanks are still in place. <br />M310-A <br />