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C Z- 0-5-9 <br />Kaldenbach, Tom / R <br />From: Nettleton, Jerry [JNettleton@peabodyenergy.com] 4,w".1' c arf er <br />Sent: Wednesday, October 28, 2009 3:46 PM dR fw- amm /?/2l`f ?e fnn <br />To: Kaldenbach, Tom a**/ T. 1<'4[6te,1V ,A <br />Subject: RE: Foidel Creek Mine (C-82-056), PR-8, Item 6, Impacts to springs Cv ?a? <br />Attachments: PR09-08 TA(3) Response Spring Table.doc <br />Tom - <br />We are working on responses to your comments. Please refer to Exhibit 1 of the previously submitted information for <br />the locations of the Spencer Spring #2, Bear Run Spring, and House Spring. Given their proximity to Coyote Spring, I <br />have included Bear Run Spring and House Spring in the table, and have included them under the "Underburden Springs" <br />category, as they occur under essentially the same conditions. Spencer Sping #2 is probably too far out to consider. <br />Attached is a draft of the table - we are working with our hydrologist on the drawdown calculation for the Gertie and <br />Livestock #2 Springs, and will incorporate a summary in the table, and send you both the calculation and completed <br />table. Please let me know if this is what you had in mind - <br />Best regards, <br />Jerry <br />From: Kaldenbach, Tom [mailto:Tom.Kaldenbach@state.co.us] <br />Sent: Wednesday, October 28, 2009 1:19 PM <br />To: Nettleton, Jerry <br />Cc: Binns, Janet; Hernandez, Daniel <br />Subject: Foidel Creek Mine (C-82-056), PR-8, Item 6, Impacts to springs <br />Jerry, <br />The Division's responses to your email of October 27, 2009 are provided below. <br />Perry Springs - Based on the submitted explanation indicating Perry Springs #1 through #5 have shown no <br />adverse impacts from previous nearby mining, the Division has no further comment regarding these springs <br />other than to request that the information on these springs be added to the previously requested table. <br />Underburden Springs - The submittal explains that the springs that are located in areas of underburden <br />exposures (Boeddeker Springs #1 and #2 and Coyote Spring) will not be affected by the proposed mining due to <br />their stratigraphic isolation from the Wadge Coal Seam and due to their shallow recharge sources. Please <br />evaluate the potential impact to these springs for the scenario in which ground water from the Trout Creek <br />Sandstone enters the workings in the western mining district from an unexpected fault as it has been suspected <br />of doing in the 2 West Main of the #5 Mine of the Eagle Mines in Moffat County (permit page 2.05-37, Eagle <br />Mines, Permit C-81-044). Although the Boeddeker and Coyote springs may have recharge from nearby shallow <br />infiltration, they also are hydraulically connected to the underlying bedrock unit which extends eastward into <br />the western mining district. Please also add the information on these springs to the previously requested table. <br />Gertie Spring and Livestock Spring #2 - Please add the information to the previously requested table for the <br />Gertie Spring and Livestock Spring #2, using values for hydraulic properties that are consistent with those <br />reported in Robson and Stewart, 1990, "Geohydrologic Evaluation of the Upper Part of the Mesaverde Group,