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Ms. Laurie Cotulla <br /> San Joaquin Local Health Dist. <br /> Delta Project No. 40-87-146 <br /> Page Two <br /> Because the locations of all boring are within planned excavation areas (see attached <br /> Figure 2), the borings were not grouted. The excavations are for the purpose of <br /> removing old underground storage tanks and for placing new tanks at a different <br /> location. These excavations are scheduled for as soon as possible and should extend <br /> �. to approximate I5-foot depths. Another factor considered by Delta's field represen- <br /> tative was the fact that the soils are not contaminated based on the hNu readings. <br /> Sincerely, <br /> DELTA ENVIRONMENTAL CONSULTANTS, INC. <br /> Michael J. IrJoien <br /> f Project Manager „ <br /> MJO:bk <br /> cc: Tod D. Christenson <br /> St. Paul Office <br /> C(DPY( <br /> i <br /> f � <br />