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Mar 25 03 10:39a Civil Resources LLC 3038332850 p.2 Permit #: /h-.~•r ~ i~ Confidental?: ~~ Class: /~~;r,,:~ Type-Seq.: From: Ri~~- To: ~'7m(~ ~~ Doc. Name:. ~;~ ~~i«~ ,~, Doc. Date (if no dates mp): virKes-suuces March 24, 2003 Ms. Kate Pickford Division of Minerals and Geology 1313 Sherman Street, Room 215 Denver, CO 80203 RE: Hall-Irwin Corporation, File No. M-2002-120 Bernhardt Resource 112c Permit Application - 2nd Adequacy Review Response Dear Ms. Pickford: On behalf of Hall-Irwin Corporation, the following are our responses to your Adequacy Review dated March 24, 2003. Rule 6.4.7 Exhibit G -Water Information Hall-Irwin Corporation will implement the following groundwater monitoring plan to minimize disturbances to the prevailing hydrologic balance of the affected land, to the surrounding area and to the quantity and quality of water in surface and groundwater systems both during and after the mining operation. • Hall-Irwin will install approximately 9 piezometers or monitoring wells and strategically locate them throughout the site. The wells will be on the site, where groundwater impacts are the most dramatic. Hall-Irwin will schedule the wells to be installed as soon as possible. • Hall-Irwin will check the piezometers monthly to evaluate the mining operation's impact on groundwater until an adequate baseline is established. • There is one well within 1,000 feet of pod 1. This well is within the permit boundary and is owned by landowner Dave Bernhardt. Mr. Bernhardt has told us that he no longer uses this stock well because the water quality is not fit for livestock consumption. I will forvvard a letter from him that states this tomorrow. • We anticipate that the only area that will be impacted by the lowering of the water table will be riparian corridor that is adjacent to pod 1. Hall-Irwin will therefore dewater onto this corridor to sustain the riparian vegetation until pod 1 has been reclaimed. • We have mapped the permitted wells that are in the Office of the State Engineer's database. The attached map illustrates that the majority of wells within 1,000 feet of the mining operation are south and east of the permit boundary. These wells are not within 1,000 feet of pod 1. We do not anticipate that the lowering of the water table will impact them. • Hall-Irwin will fix any well production problems that arise as a result of the mining operation (no matter how far the well is from the mining operation).