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4 r <br /> r <br /> ;Advanced r _ <br /> -4 <br /> GeoEnvlron4mirntal,,,ti �c ; =�T <br />' 06 November 1998 <br /> AGE-NC Project No 98-0448 <br /> } <br />' Mr Bob Long <br /> SIERRA LUMBER <br /> 374 West Hazelton Avenue <br />' Stockton California 95206 <br />' <br /> Subject- Revision to Quarterly Report- September 1998 (dated 29 October 1998) <br /> SIERRA LUMBER- 375 West Hazelton, Stockton, California <br />' Dear Mr Long <br /> It has come to our attention that two errors were made in the Quarterly Report -September 1998 <br /> (dated 29 October 1998) 1 ` <br />' The fourth bullet in Section 4 0 - Summary And Conclusions (page 8) incorrectly states that "none <br /> of the fuel oxygenates ivere-detected above laboi atory repo?ang lunits from selected soil or ground <br /> ivater samples" The correct statement should have indicated that di-isopropyl ether (DIPS) was <br />' detected in a ground water sample collected from MW-2 (09 September 1998) at a concentration of <br /> 51 micrograms per liter (µg/L) and in a sample collected from MW-6 (25 August 1998) at a <br /> concentration of 0 94 4g/L, methyl tert butyl ether (MTBE) was detected in ground water samples <br />' collected from MW-2 during August and September 1998 at concentrations between 240 and 690 <br /> µg/L, TBA was detected in a ground water sample collected from MW-6 (25 August 1998)at a <br /> concentration of 9 4 ,ug/L <br />' Figure 9 depicts ground water elevations from wells MW-1 through MW-7 in negative values(below <br /> p g <br /> sea level), while the elevation contour lines are shown in positive values (above sea le\el) The <br />' elevation contoui lines should have been depicted as negative values _ <br />' We apologize for any incom enience these oversights may have caused and,have included the <br /> revisions to Section 4 0 and Figure 9 If you have any questions or require further information, <br /> please contact our office at (209) 467-1006 ` <br /> n <br /> 4005 North Wilson Way, Stockton,California 95205 <br />' Telephone (209)467-1006 FAX(209)467-1118 <br />