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GEoSYNTEc CONSULTANTS <br /> Ms Amy Terrell <br />' 1 February 2005 <br /> Page 3 <br />' ♦ Indicator metabolic acids were not detected 1n either well during the 4th <br /> quarter 2004 monitoring event <br />' ♦ Favorable indicators of anaerobic reducing conditions are <br /> ■ Methane is detected in both wells Higher concentrations of methane <br />' persist in Well MW-2, indicating a higher level of anaerobic <br /> activity 1,2,3-TCP has been non-detect for the past three <br /> monitoring events and 1,2-DCP decreased to 8 6 ug/L from <br />' concentrations as high as 40 4 ug/L <br /> ■ Dissolved iron and manganese in MW-2 have increased, indicating <br />' reducing conditions <br /> ■ TON has decreased to non-detect levels in MW-2 for the past three <br /> quarters and 0 3 mg/L for the current quarter, further indicating <br /> reducing conditions <br />' ()A/()C Review <br /> GeoSyntec conducted a quality assurance/quality control (QA/QC) review of the <br />' analytical data from Keystone Data were reviewed for completeness, accuracy, <br /> precision, sample contamination, and conformance with holding tunes Results of the <br /> review indicate the data are of acceptable quality <br /> • P TRf2003REM1WFSIVERIMQN"Q041QAK04078 doc <br /> 1 <br />