|
Stantec
<br /> L & M OPERABLE UNIT- FOURTH QUARTER AND ANNUAL 2012 SITE STATUS,
<br /> REMEDIAL SUMMARY, AND GROUNDWATER MONITORING REPORT
<br /> Groundwater Monitoring and Sampling
<br /> February 1, 2013
<br /> 2.7.2.2 Fuel Oxygenates and Hydrocarbon Concentrations
<br /> A summary of 4Q12 deep (B-, C-, and D-Zone) concentration trends of TPHg, TPHd, TPHo,
<br /> benzene, MtBE, and TBA in comparison to results reported during the previous quarter are
<br /> presented in the table below. Values in parentheses represent number of detections and
<br /> non-detects that were reported in the 3012.
<br /> Number
<br /> Wells With
<br /> Wells With Wells of Wells With
<br /> Number Number Stable or Non-
<br /> Constituent Zone Increased Concentrations Stable or Non-
<br /> of Wells of Wells Detectable
<br /> Concentration Decreased Detectable
<br /> Concentrations
<br /> Concentrations
<br /> MW-16,MW-42,
<br /> B MW-51,MW-59 4(1) 0(1) MW-57,MW-60 2(11)
<br /> MW-54,MW-65, MW-62,MW-63,
<br /> C MW-66 3(4) MW-64 1 (0) MW-67 3(4)
<br /> TPHg
<br /> MW-55,MW-68,
<br /> MW-69,MW-70,
<br /> D MW-71,MW-72, 7(3) 0(1) MW-73 1 (4)
<br /> MW-74
<br /> MW-16,MW-42,
<br /> B MW-51,MW-57, 6(8) 0(3) 0(2)
<br /> MW-59,MW-60
<br /> MW-54,MW-62,
<br /> TPHd
<br /> C MW-63,MW-67 4(3) MW-65 1 (2) MW-64,MW-66 2(3)
<br /> MW-55,MW-68,
<br /> MW-69,MW-70,
<br /> D 0(7) MW-71,MW-72, 7(0) MW-74 1 (1)
<br /> MW-73,
<br /> MW-42,MW-57,
<br /> B MW-60 3(5) MW-16,MW-59 2(1) MW-51 1 (7)
<br /> MW-62,MW-64,
<br /> TPHo C 4(3) MW-54 1 (1) MW-63,MW-65 2(4)
<br /> MW-66,MW-67
<br /> MW-55,MW-69, MW-68,MW-71,
<br /> D MW-74 3(8) MW-70,MW-73 2(0) MW-72 3(0)
<br /> I:\Tidewater\TW Stockton(P2A)\QMRs\2012\4Q12-Ann ual\4Q12 and Annual QSSR QRSR QMR Stockton_FINAL.doc 2.16
<br />
|