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<br />Lawrence S&H Well Injury Letter <br />Page 3 <br />It is evident from Table 1 that the proposed dry pit mining will cause increased water level <br />drawdown in each of irrigation and domestic wells. Furthermore, when comparing this increased <br />drawdown to the saturated thickness, column [1], in Table 1, it is my opinion that the production <br />from each of the 16 irrigation wells will be decreased, and in some instances, surging will result. <br />I have previously recornmended that S&H limit its de-watering to periods other then the irrigation <br />season. To avoid injury to wells in the area, I recommend the following language: <br />All de-watering pits must be a minimum of 2,000 feet from any existing irrigation, <br />domestic or stock well. <br />2. S&H shall de-water only one azea at a time and shall be limited to the period after <br />irrigation has ceased in the azea to Mazch 15. <br />Sincerely, <br />Forrest Leaf, P.E: <br />Enclosure <br />cc: Mike Ptasnik <br />LEAF ENGINEERWG <br />Hydrology' Hydraulics Water Resources ~ Water Quality <br />E:LLnPPtesnikLLexttntt S&H well injury lentt rcport 2.wpd <br />