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Evaluation of Potential Impacts <br />From The Proposed Nix Property Sand and Gravel Operation <br />On Shallow Groundwater Levels, Water Wells and Wetlands <br />The top-of-casing and ground surface elevations at the piezometers were surveyed and water <br />levels were recorded on the following dates: August 14, August 29, September 7, September 14, <br />October 10, October 23, November 13 and December 8, 2001 as well as January 9, February 6, <br />March 8 and Apri19 2002. <br />3.3 Adjacent Wells and Monitoring <br />SEO regulations require that owners of wells within 600 feet of proposed aggregate mining <br />operations be contacted to allow them the opportunity to assess the potential effects on their well. <br />Banks and Gesso, LLC conducted a seazch of the SEO records to identify all permitted wells <br />within one-half mile of the proposed operation. Table 1 is a list of these neazby wells as <br />correlated to locations identified on Sheet 1 (drawing pocket at end of report). <br />Following public notification of the proposed Nix mining operation, approximately 20 well <br />owners (some at distances greater than 600 feet) expressed concern about the operation and its <br />potential effects on their wells. Table 2 is a list of the well owners that expressed concern <br />including their well designation on Sheet 1, well depth, well yield and permitted use. Several of <br />the owners expressing concern had wells completed in bedrock aquifers that will be unaffected <br />by the Nix gravel mining operation (i.e., those wells completed deeper than approximately 65 <br />feet). <br />As a result of discussions with the concerned well owners and neighboring landowners, 7 <br />existing irrigation, domestic and/or stock wells (in addition to the 12 piezometers) were used as <br />observation locations for this investigation. Collectively, the 19 wells were given designations <br />MW1 through MW19, and their elevations were surveyed relative to the top of the casing and <br />ground surface. These 19 monitoring locations aze shown on Sheet 2. Groundwater level <br />observations at the 19 monitoring wells were made between August 14 and October 10, 2001. <br />011-074.000 Wright Water Engineers, Inc. Page 6 <br />April 2002 <br />