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Ms. Eleanor Ratliff <br /> March 12, 1991 <br /> Page 2 <br /> Based on the evidence cited above,pressure grouting was q,elected as a preferred abandonment technique <br /> for these wells. This method will involve backfilling the well casing with a cement and powdered <br /> bentonite grout. The well casing will be pressurized to 10-12 psi for a period of approximately <br /> 15 minutes, then left to cure. <br /> The well abandonment permits are enclosed for your apf roval with the $60 application fee. The work <br /> will be conducted as soon as possible after approval is obtained from your office. <br /> Sincerely, <br /> DELTA ENVIRONMENTAL CONSULTANTS, INC. <br /> Martin S. Burck <br /> Project Manager/Hydrogeologist <br /> MSB:ecd <br /> Enclosures <br /> cc/enc: Mr. Glenn R. Dembroff, Ultramar Inc. <br /> E <br />