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in the middle reaches of Squaw Gulch likely will decrease the concentration of trace <br />metals (e.g., aluminum, manganese, nickel, and zinc) at SG -10. <br />5.2.4 Ground Water <br />5.2.4.1 Monitoring Program <br />Ground water conditions in Squaw Gulch are assessed by three monitor wells and one <br />shallow piezometer (Figure 2 -1). The monitor wells are designated SGMW -3A <br />(bedrock), SGMW -3B (alluvium/shallow bedrock), and SGMW -5 (bedrock). The <br />shallow piezometer is screened in the alluvium and is designated SG -04PZ. SGMW -3A <br />and SGMW -3B are co- located to allow assessment of vertical conditions of water level <br />and water quality in the Diatreme. SG -04PZ also is located within the Diatreme. <br />SGMW -5 is located in the adjacent granites. <br />Field parameters and water quality samples are collected quarterly at SGMW -3A, <br />SGMW -3B, SGMW -5, and SG -04PZ and analyzed for the parameters listed in Table 3 -2. <br />Pressure transducers have been installed in SGMW -3A, SGMW -3B, and SGMW -5 to <br />more frequently (2x- 4x/day) monitor the water level. The data are periodically <br />downloaded and compiled. <br />5.2.4.2 Data <br />The period of record and compiled field and water quality data (number of <br />measurements, less than detection events, maximum value, minimum value, average <br />value, standard deviation, and median value) for monitor wells SGMW -3A, SGMW -3B, <br />and SGMW -5 and piezometer SG -04PZ are provided in Tables 5 -5, 5 -6, 5 -7, and 5 -8, <br />respectively. Figure 5 -4 shows the hand level measurements and the pressure transducer <br />data for SGMW -3A, SGMW -3B, SGMW -5, and SG -04PZ. Time series plots of selected <br />parameters (pH, nitrate, and sulfate) are provided in Figure 5 -5. SGMW -3A and SGMW- <br />5 are dry and have no water quality data. <br />5.2.4.3 Discussion <br />Ground water levels in SGMW -3A (Diatreme) have shown dry conditions at or near the <br />bottom of the monitor well at approximately 146 feet bmp since installation in 1998. <br />Ground water levels in SGMW -5 (granite) have shown dry conditions (approximately <br />265 feet bmp) since installation in 2001. Water levels are shown in Figure 5 -4. <br />Ground water levels in SGMW -3B and SG -04PZ vary from 16.95 to 51.8 feet bmp and <br />3.4 to 7.8 feet bmp, respectively. The 2007 -2011 pressure transducer data for SGMW -3B <br />'Cripple Creek & Victor Gold Mining Company <br />Cresson Project Hydrologic Evaluation for Mine Life Extension 2 <br />18 <br />