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2 <br />During the seventh operational quarter, eight ground water monitoring wells, <br />1) Well21-4U <br />2) We1121-3U <br />3) Well 21-4A <br />4) Well 21-46 <br />5) Well 29-3 <br />6) Well 19-2 <br />7) We1120-5 <br />8) Well29-4B <br />indicate values that exceed either the Numeric Protective Level (NPL) or the <br />Early Warning Indicator (EWI) level established under the MLRB 112 permit. <br />Charts of this data are presented in the following pages for reference. Generally <br />the outlying data fluctuates very little from the NPL or EWI. The variations <br />observed are similar to natural phenomenon and the variability is not consistently <br />trending in one direction nor does it generally correspond with other outlying <br />indicator constituents. <br />In one instance, Well 19-2, dissolved barium levels are elevated with no <br />corresponding increases in any of the other indicator constituents. It is highly <br />likely that this trend results from leaching of barium from the materials that were <br />used to plug off the well when it ignited during coring due to the high methane in <br />the formation. When several purge volumes are extracted from this well using <br />the micro purge equipment the barium levels begin to drop. <br />Fluoride values in Well 21-3U have periodically spiked above the <br />25 mg/L NPL established for this point of compliance well since mining <br />operations began in October 2000, however, spikes were also randomly <br />observed at this point during baseline monitoring before mining began. <br />Phosphorus values in five wells, Well 21-3U, Well ZO-5, Well 21-4A, and Well <br />29-3 all show a slight elevation during the current report period. No regulatory <br />standard is established for this constituent however early warning indicators and <br />numeric protective levels have been established to assist with validation of the <br />