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Mr. Mark Stodola Mr. Bob Pieper Page 2 May 22, 2003 Based on Mr. Edson's inspection,information provided by you and in the variance request, and in accordance with Minnesota Rules, Chapter 4725, your request for a variance is granted to construct the subject well 30 feet from an untested buried sewer line located north of the proposed home under North Shore Drive. The variance is granted because there is no location for a well on the subject property which complies with all required isolation distances. The proposed well location appears to provide the greatest available separation between the well and known contamination sources. Because the isolation distance between the proposed well and the existing buried sewer is less than required in rule, additional construction methods and precautions are required in order to reduce the potential for contamination of the well and groundwater. Adherence to the following list of additional conditions and requirements should provide the necessary additional protection for the well and groundwater. The variance is granted with the following conditions: 1. The existing well on the subject property must be permanently sealed by a licensed well contractor or licensed well sealing contractor within 30 days of completion of the new well, in accordance with Minnesota Rules, Chapter 4725. 2. The casing for the subject well must extend to a depth of at least 100 feet. 3. If the subject well is constructed using a method which creates an open annular space, the annular space between the casing and the bore hole wall from a depth of at least 100 feet up to the ground surface or base of the pitless connection must be filled with neat-cement grout as defined in Minnesota Rules,part 4725.0100 or high-solids bentonite grout that is NSF approved and marketed as a well sealant. High-solids bentonite grout must be mixed to the manufacturer's specifications, or must meet the minimum requirements of 15 percent by weight bentonite as specified in Minnesota Rules, Chapter 4725, whichever is heavier. Grout must be inserted through the casing or through a tremie pipe. Any annular space surrounding the casing below 100 feet in unconsolidated materials may be filled with drill cuttings taken from the well, or neat-cement or high-solids bentonite grout. 4. All new buried sewers located between 20 and 50 feet from the well must be constructed of cast-iron or plastic pipe in accordance with the materials and pressure testing requirements of Minnesota Rules, Chapter 4715 (Minnesota Plumbing Code). 5. All other provisions of Minnesota Rules, Chapter 4725, are in effect.