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• <br />1.0 INTRODUCTION <br />Cripple Creek & Victor Mining Company (CC&V) currently operates the Cresson Project, <br />a gold mining and processing operation in the Cripple Creek Mining District (the District) <br />located near the cities of Cripple Creek and Victor, Colorado, in the mountains west of <br />Colorado Springs, Colorado. A site location map is provided in Figure 1.1. <br />CC&V is proposing to extend mining in the existing Main Cresson, East Cresson, and <br />the North Cresson mines and extend the areal extent of the existing Valley Leach <br />Facility (VLF). This proposed Mine Life Extension (MLE) will produce approximately 110 <br />million tons of additional gold-bearing ore and approximately 250 million tons of <br />overburden (non-economic rock). The additional ore will be processed in an extension of <br />the VLF. Overburden resulting from mining activities in these extension areas will be <br />placed into portions of the existing Main Cresson Mine, East Cresson Mine, and North <br />Cresson Mine as mine backfill, or will be placed for storage in the existing Squaw Gulch <br />Overburden Storage Area (SGOSA), an extension of the SGOSA, or the new East <br />Cresson Overburden Storage Area (ECOSA). <br />This report presents historical surface water and groundwater monitoring data, describes <br />existing surface water and groundwater conditions, and presents the predicted surface <br />water and groundwater conditions due to the proposed MLE. This report also presents <br />design criteria for extension facilities, as appropriate, to minimize potential hydrologic <br />impacts. <br />The evaluation has been divided into two areas: the main project area and the Grassy <br />Valley drainage. The "main project area" contains all of the current mining facilities and <br />most of the proposed activities related to the proposed MLE. The proposed new <br />ECOSA and the Wildhorse Extension (WHEX) portion of the East Cresson surface mine <br />will be located in the Grassy Valley drainage. <br />This report is organized as follows: <br />• Section 1.0, Introduction -Summarizes the scope and objectives of the report <br />and provides a description of the proposed MLE activities. <br />• Section 2.0, Site Description - Provides a description of the project location and <br />summarizes the physical characteristics of the project site. <br />• Section 3.0, Main Project Area Hydrologic Conditions - Presents a general <br />overview of the hydrologic and hydrogeologic conditions in the drainages of the <br />main project area. The hydrologic monitoring program for the main project area <br />is described and data summaries are presented. <br />2736 <br />Cripple Creek & Victor Gold Mining Company <br />Water Management Consultants <br />