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L & M OPERABLE UNIT- FIRST QUARTER 2012 SITE STATUS, REMEDIAL SUMMARY,
<br />AND GROUNDWATER MONITORING REPORT
<br />Groundwater Monitoring and Sampling
<br />April 30, 2012
<br />I:\Tidewater\TW Stockton (P2A)\QMRs\2012\1Q12\1Q12 QSSR QRSR QMR Stockton_FINAL.doc 2.25
<br />Constituent Zone
<br />Wells With
<br />Increased
<br />Concentration
<br />Number
<br />of Wells
<br />Wells
<br />Concentrations
<br />Decreased
<br />Number
<br />of Wells
<br />Wells With
<br />Stable or Non-
<br />Detectable
<br />Concentrations
<br />Number
<br />of Wells With
<br />Stable or Non-
<br />Detectable
<br />Concentrations
<br />TPHo
<br />B MW-24, MW-32,
<br />MW-57, MW-58 4 (8)
<br />MW-16, MW-27,
<br />MW-29, MW-59,
<br />MW-60
<br />5 (3)
<br />MW-26, MW-35,
<br />MW-42, MW-44,
<br />MW-51, MW-56
<br />6 (4)
<br />C -- 0 (6)MW-62, MW-63,
<br />MW-67 3 (2)
<br />MW-54, MW-61,
<br />MW-64, MW-65,
<br />MW-66
<br />5 (0)
<br />D -- 0 (8)
<br />MW-68, MW-69,
<br />MW-70, MW-73,
<br />MW-74
<br />5 (0)MW-55, MW-71,
<br />MW-72 3 (0)
<br />Benzene
<br />B MW-58 1 (0) -- 0 (1)
<br />MW-16, MW-24,
<br />MW-26, MW-27,
<br />MW-29, MW-32,
<br />MW-35, MW-42,
<br />MW-44, MW-51,
<br />MW-56, MW-57,
<br />MW-59, MW-60
<br />14 (14)
<br />C MW-64, MW-66 2 (2) MW-54, MW-63 2 (2)MW-61, MW-62,
<br />MW-65, MW-67 4 (4)
<br />D -- 0 (1) MW-70, MW-71 2 (1)
<br />MW-55, MW-68,
<br />MW-69, MW-72,
<br />MW-73, MW-74
<br />6 (6)
<br />MtBE
<br />B MW-42, MW-44 2 (3)MW-51, MW-58,
<br />MW-59 3 (3)
<br />MW-16, MW-24,
<br />MW-26, MW-27,
<br />MW-29, MW-32,
<br />MW-35, MW-56,
<br />MW-57, MW-60
<br />10 (9)
<br />C MW-63 1 (1) MW-54, MW-64 2 (2)
<br />MW-61, MW-62,
<br />MW-65, MW-66,
<br />MW-67
<br />5 (5)
<br />D -- 0 (0) MW-55 1 (1)
<br />MW-68, MW-69,
<br />MW-70, MW-71,
<br />MW-72, MW-73,
<br />MW-74
<br />7 (7)
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