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' Statttec
<br /> ' L 11 M OPERABLE UNIT-THIRD QUARTER 2010 SITE STATUS, REMEDIAL SUMMARY,
<br /> AND GROUNDWATER MONITORING REPORT
<br /> Groundwater Monitoring and Sampling
<br /> ' October 27, 2010
<br /> SPH removal activities are scheduled to be conducted quarterly (at a minimum) for on and
<br /> ' offsite wells which repeatedly contain measurable thickness of SPH or sheen. It should be
<br /> noted that these SPH removal activities are typically performed between quarterly monitoring
<br /> events (as noted on the table), and are likely to influence reported SPH thickness.
<br /> 1 2.7.2.2 Fuel Oxygenates and Hydrocarbon Concentrations
<br /> ' A summary of third quarter 2010 deep B-, C-, and D-Zone concentration trends of TPHg, TPHd,
<br /> TPHo, benzene, MtBE, and TBA in comparison to results reported during the previous quarter
<br /> are presented in the table below. Values in parentheses represent number of detections and
<br /> tnon-detects that were reported in the second quarter 2010.
<br /> 1
<br /> 1
<br /> ' MW-24,MW-26,
<br /> MW-16,MW-29,
<br /> MW-27,MW-32,
<br /> B MW-58 1 (4) MW-42,MW-51, 6(2) 8(7)
<br /> MW-35,MW-44,
<br /> MW-56,MW-59
<br /> ' MW-57,MW-60
<br /> TPHg
<br /> C MW-54 1 (2) MW-64,MW-65, 3(2) MW-61,MW-62, 4(4)
<br /> MW-66 MW-63,MW-67
<br /> D MW-55,MW-70 2(3) MW-71,MW-72 2(l) MW-68, MW-69, 4(4)
<br /> MW-73,MW-74
<br /> MW-16,MW-27,
<br /> 1 MW-29,MW-35,
<br /> MW-24,MW-26,
<br /> B 4(8) MW-42,MW-44, 10(s) MW-32 1 (0)
<br /> MW-57,MW-58
<br /> MW-51,MW-56,
<br /> t MW-59,MW-60
<br /> TPHd
<br /> MW-54,MW-62, MW-61,MW-63,
<br /> C 3(4) 3(2) MW-66,MW-67 2(2)
<br /> MW-64 MW-65
<br /> ' MW-69,MW-70,
<br /> D MW-68 1 (5) MW-71,MW-72, 6(3) MW-55 1 (0)
<br /> Mw-73,MW-74
<br /> 1
<br /> ' 1lraewateA\rw Stockton(Parcel2A-0 15)\RepoftkQMRU070t9410(30100SSRQRSRQMRStockwn_FINALAm 2.23
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