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l destroying the existing water supply well to eliminate it as a potential vertical migration pathway to <br /> . Yi g g PP Y <br /> underlying aquifers Ground Zero submitted a workplan to PHS/EHD to replace the existing well in <br /> correspondence dated December 4, 2000 PHS/EHD has yet to comment on or approve the <br />' workplan <br /> Further, Ground Zero recommends installing additional groundwater monitoring wells to better <br /> define the extent of dissolved MTBE contamination north and northeast of well MW6 <br />' Recommended locations of proposed wells are shown on Figure 10 <br />' 9.0 CERTIFICATION <br /> Signature of this report certifies that Ground Zero's professional services have been performed, our <br /> findings obtained, and our conclusions prepared in accordance with customary principles and <br /> practices in the fields of environmental science and engineering All wastes generated as a result of <br /> tthese investigations will be disposed of in accordance with local regulatory requirements The <br /> analytical laboratory will ultimately dispose of collected soil and groundwater samples <br /> This investigation was performed under the direct supervision of John Lane, who has reviewed and <br /> approved this report This assessment was performed utilizing methods and procedures <br /> consistent with good commercial or customary practices designed to conform to acceptable <br /> industry standards The independent conclusions represent Ground Zero's best professional <br /> judgement based on the conditions that existed and the information and data available to us <br />' during the course of this assignment Factual information regarding operations, conditions, and <br /> test data provided by the client have been assumed to be correct and complete <br /> o~ JOHN P <br />' • LANrE w <br /> No 6795 <br /> Sean Garvey t--�-'� John P Lane <br /> Staff Geologist CA Registered Geologist No 6795 <br /> 1 13 <br /> datalgroundze/luteburg/reports/mud_has_wellreport doc <br />