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baseline hyclrotogy monitoring plan to the Division in May, 2005, and <br />received approval to monitor groundwater at three (3) initial monitor <br />well sites. Groundwater data collection commenced at well NF-02 in <br />August 200~i, and subsequently at the NF-O1A and NF03A wells in <br />November 2005. Water quality and quantity is consistent within each <br />monitoring well with the exception of a May 2006 sample of NF-03A <br />which displayed increased hardness and sulfates. Since no other <br />' monitoring ~nrell displayed similar behavior, it is doubtful the chemistry <br />is due to a seasonal influence. Ground water sampling is proposed for <br />Spring 200i' irr order to obtain comparison data. <br />• <br />Subsurface water quality data summary of analytes and field <br />parameters per Section 2.04.7(1)(a)(v). <br />Well Sampling TDS/EC* pH* Iron Manganese <br /> Date <br />NF-OlA November 30, 1130/952 8.84 0.08 0.071 <br /> 2005 <br /> February 9, 1150/1570 9.38 0.08 0.013 <br /> 2006 <br /> May 5, 2006 1130/1615 8.95 0.23 0.016 <br /> August 15, 1110/1660 8.85 0.49 0.007 <br /> 2006 <br />NF-02 August 9, 1640/2224 9.6 0.19 0.023 <br /> 2005 <br /> November 8, 1610/2607 8.46 0.07 0.006 <br /> 2005 <br /> February 9, 1630/1938 8.27 0.22. 0.005 <br /> 2006 <br /> May 5, 2006 1680/2228 8.28 0.05 0.005 <br />NF-03A August 9, 1300/2202 9.29 0.02 0.087 <br /> 2005 <br /> November 8, 1310/2230 8.45 0.08 0.016 <br /> 2005 <br /> February 9, 1320/1948 8.31 6.79 0.296 <br /> 2006 <br /> May 5, 2006 1350/1968 8.41 0.19 0.01 <br />*Denotes field data <br />Northfield's underground operations will be limited to and affect the <br />Ocean Wave coal seam which lies within the Vermejo formation of <br />i Upper Cretaceous Age. The Ocean Wave is one of the lower-most of <br />approximately seven identified coal seams in the formation. In the <br />permit and adjacent areas the Vermejo is 700 to 900 feet thick, and is <br />2.04-16 Revised 8/20/07 <br />