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1. You confirmed that all 21 soil gas wells will need to be permitted prior to destruction. You indicated the fee was$375 <br /> per parcel and$125 per well. You thought the approval of the permits wouldn't take more than a week depending on <br /> your schedule. <br /> 2. Fourteen (14)of the soil gas wells are located in areas where the planned depth of the excavation is below the <br /> bottom of the soil gas well. You concurred that the complete excavation of the wells to depths below the bottom of the <br /> soil gas wells would be satisfactory as a destruction method. <br /> 3. Seven (7)of the soil gas wells are located in areas where the planned depth of the excavation is above the bottom of <br /> the soil gas wells. Each well of these wells is constructed of 1/4 inch polyethylene tubing and have 6-inch stainless steel <br /> screens set at two depths. The depth of the shallow screens range from 5.25 to 5.5 feet,while the depth of the deep <br /> screens range from 8.5 to 14.75 feet. As a destruction method,you indicated the County will require that we overdrill <br /> these wells and tremie grout the resulting borehole. Additionally,you indicated the County is not comfortable with just <br /> pulling the tubing, especially for the deeper wells since there is a likelihood the removal would be incomplete. <br /> If there is anything in this email that misconstrues your reponse please let me know. Regardless, it would be <br /> appreciated if you could respond to indicate you concurrence with my understanding of our conversation. <br /> Please advise. <br /> Thanks. <br /> Pat Barrese, PG <br /> TERRA PACIFIC GROUP <br /> 201 North Civic Drive, Suite 135 <br /> Walnut Creek, CA 94596 <br /> Office: (925)951-6000 x322 <br /> Mobile: (925)667-7464 <br /> Fax: (925) 951-6005 <br /> 3 <br /> 1 <br />