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- 3 - 14 September 2006 <br /> In Graphs 1 and 2 below, the TPHg results from MW-2 and MW-3 groundwater monitoring <br /> from 1994 to 1996 were compared to TPHg results from 2002 to 2006. Water quality data <br /> show increasing TPHg concentration trends in both monitoring wells. <br /> Graph 1 <br /> MW-2 TPHg <br /> 1 <br /> 500 - -- ------ --- -— <br /> 400 <br /> 300 _._ MW-2 TPHg <br /> 200 - —Linear (MW-2 TPHg) <br /> 100 <br /> 0 (O W m O N M V LO O <br /> O O O m O O O O O O O O <br /> M i i <br /> (6 (6 f6 f6 (i1 c6 c6 (0 (6 c0 (6 (6 c0 <br /> date <br /> Graph 2 - - <br /> MW-3 TPHg <br /> 500 - <br /> 400 <br /> 300 +MW-3 TPHg <br /> 200 - Linear (MW-3 TPHg) <br /> 100 - <br /> 0 <br /> C�` 0Cb1bC� 0lb41O� O� Off` OQP <br /> II <br /> date <br /> Graph 2 shows that MW-3 groundwater monitoring results for TPHg for Case #1 were <br /> declining at the time of closure in 1997, while Graph 1 shows MW-2 had one final TPHg <br /> detection in January 1997 of 170 pg/L after four quarters at or below detection limits of 50 <br /> pg/L. However, the combined graphs for Case #1 and Case #2 data show an increasing <br />