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Mr. Michael Infurna <br /> Page 2 <br /> MTBE was added to the constituents of concern list pursuant to correspondence from your office <br /> dated August 1, 1996, which requested that MTBE and oil and grease be considered constituents <br /> of concern and should be sampled for two consecutive 'quarters. In response to the referenced <br /> correspondence, Ground Zero contacted the laboratory7 to review the chromatograms from the <br /> second quarter 1996 analytical data to quantify MTBE. MTBE was determined to be <br /> ' nondetectable in all three wells, and the Table 2 was modified to reflect the results. The revised <br /> laboratory report for the second quarter 1996 data is included in Attachment C. As we have <br /> discussed, oil and grease was not added to the constituents of concern list based on three <br /> M consecutive quarters of nondetectable results in 199411995. <br /> 'i <br /> If you have any questions or comments, please contact 'ithe undersigned at (209) 952-3481. <br /> 1 <br /> Respectfully, k <br /> Ground Zero Analysis, Inc. <br /> 6� ' ceAdo <br /> � F-D GF0 <br /> Jeanne Buckthal ��� zo <br /> Sta Geologist � N <br /> GREGORY P. "{ <br /> / * STAHL! <br /> No. 5023 <br /> k Gregory P. Stahl, RG 5023 <br /> CA Certified Hydrogeologist 264 OF �p►1Fa�a <br /> Attachments <br /> k <br /> Ik pc: John Pestana QTIP Trust <br /> Ms. Elizabeth Thayer, RWQCB Sacramento € <br /> f <br /> I'M <br /> C � <br /> F <br /> l iP <br /> i <br /> grawdze\M1ana.03513gm1996 <br /> 4 ,f <br /> 7 <br /> i <br />