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issues may have appeared with respect to specific analytes in certain wells <br />(manganese in SMW-2 for example) overall parameters are well within the <br />scope of what should be considered acceptable, and reflect the recharge of <br />the groundwater through the soils/spoils as opposed to one of the <br />aforementioned actions. <br />Further, although altered within the Keenesburg Mine site itself, general <br />groundwater flow patterns in the vicinity of the site appear not to have been <br />significantly changed (or interrupted) by the past coal mining activities, or <br />by the ongoing ash disposal work. <br />The six ground water monitoring wells were sampled by CEC on a quarterly <br />basis in 2004. These wells are designated AMW-1, AMW-2, DH-96, DH- <br />122, FPW and SMW-2. Water quality analysis includes both the fieldwork <br />and the analytical laboratory testing of water samples collected from these <br />wells. <br />Field measurement: <br />Static water level is a tape measurement from the top of the well casing (a <br />. known ground elevation) to the current water level in the well. This <br />measurement is taken after a visual inspection of the area surrounding the <br />well, and precedes any sampling activity. Water sample temperature is <br />determined using a temperature probe placed in each sample as soon as it is <br />collected. Specific conductance is also obtained using an electrical <br />conductivity meter. Each field water sample is tested for pH against a <br />baseline pH neutral solution (7.0), once the meter adjusts to the water <br />temperature of the sample. All data collected during field-testing is <br />recorded in the field logbook, which is kept at the Keenesburg Mine office. <br />A graphic display of the information for each well (for the most recent five- <br />yearperiod) can be found in a subsequent section of this Report, "Analysis <br />of Water Sampling Field Data". <br />Laboratory analvsis: <br />The wells are sampled in a sequence that follows the order of least to <br />greatest level of salinity. At the end of 2004 this sequence was: (1) FPW, <br />(2) AMW-1, (3) DH-96, (4) DH-122, (5) AMW-2 and (6) SMW-2. Ash <br />Monitor Well No. 2 (AMW-2) has shown continued signs of recharge since <br />• the A-Pit reclamation activities were concluded. This has been a trend since <br />the end of 1999 when A-Pit reclamation was complete. Water was found in <br />AHR-2004 -50- <br />