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November 2011 Page 1 -7 <br />NE -008: A grab sample location at the primary spillway outfall of sediment Pond 008 <br />located at the base of the Refuse Disposal Area of the New Elk Mine. <br />NE -009: A grab sample station of the New Elk Mine water discharge pipe located in <br />Apache Canyon. The station was established to monitor the quality of mine water discharge <br />from the New Elk Mine. <br />NE -033: A grab sample station from the sewage treatment plant intake and discharge. <br />1.2.4 Alluvial Wells <br />Location, surface elevation, total depth, zone of completion, and monitoring purpose are <br />provided for all wells in Table 1 -3. <br />PAW -1: A dip sample from an alluvial well located to the south of the Purgatoire River <br />in alluvium adjacent to PRS -1. This sample station was established to monitor water quality <br />above significant mining activity. Data collected at this station (annual minimum, maximum, <br />mean) from 1984 to date are presented in Table B -3. <br />PAW -2: A dip sample from an alluvial well located to the north of and adjacent to the <br />Purgatoire River approximately 200 yards downstream of PAW -1. This sample station was <br />established to monitor water quality down gradient from the underground coal development <br />refuse pile at the new Elk Mine. Data collected at this station (annual minimum, maximum, <br />mean) from 1984 to date are presented in Table B -4. <br />PAW -3: A dip sample from an alluvial well located to the north of and adjacent to the <br />Purgatoire River approximately 300 yards downstream of PAW -2. During March and April of <br />1985, 500 ft of the Middle Fork of the Purgatoire River was diverted to the north to create <br />additional room for the coal stockpile at the New Elk Preparation Plant. The diversion was cut <br />through an existing refuse disposal area. PAW -3 was established to monitor the quality and <br />quantity of water movement into the upstream (west) end of the backfilled channel. Monitoring <br />of this station was eliminated in 1999 with elimination of the diversion survey. <br />PAW -4: A dip sample from an alluvial well located to the north of and adjacent to the <br />Purgatoire River approximately 100 yards downstream of PAW -3. The well was established in <br />the backfilled channel during the diversion of the Purgatoire River. It was established to monitor <br />the quality and quantity of water movement into the downstream (east) end of the diversion. <br />Monitoring of this station was eliminated in 1999 with elimination of the diversion survey. <br />PAW -8: This station was installed and monitoring began in 1994 to monitor the effects <br />of the Refuse Disposal Area at the New Elk Mine on Purgatoire River alluvial groundwater. The <br />well is located on the north river bank. Data collected (annual minimum, maximum, mean) <br />collected from 1994 to date are presented in Table B -5. <br />