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5608 N PERSHING AVE
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<br /> MW#2A showed BTEX at 2.0 ppb, less than 0.3 ppb, less than 0.3 ppb, and less than 0.6
<br /> ppb, respectively:
<br /> MW#4,MW#5,MW#5A,MW#8,MW#9,MW#10 and MW#11 all showed BTEX at less
<br /> than 0.3 ppb, less than 0.3 ppb, less than 0.3 ppb, and less than 0.6 ppb, respectively.
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<br /> 05-09-90 Monitoring wells MW#2,MW#2A,MW#4, MW#4A, MW#5, MW#5A, MW#8,MW#9,
<br /> MW#10,and MW#11 were sampled this date. Depth to water measurements were from 33'
<br /> BGS to 36' BGS. Flow direction was to the north northeast. Only MW#2 and MW#2A
<br /> showed BTEX contamination, all other wells were nondetect for BTEX at detection limits
<br /> of 0.3 ppb. MW#2 a'nd MW#2A showed TPH as gasoline and BTEX at 61'ppb, less than
<br /> 0.3 ppb, less than 0.3.ppb, I= than 0.3 ppb, and 2.0 ppb, respectively.
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<br /> 06-21-90 Well heads and surface seals for monitoring wells MW#1 through MW#7 reconstructed this
<br /> date. The consultant reported that the poor condition of the wells may be allowing surface
<br /> water contamination into the wells and may be skewing the groundwater sampling results.
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<br /> 07-04-90 Monitoring wells MW#4 and MW#5 were sampled this date. Groundwater,measurements
<br /> showed groundwater to be between 30'-34' BGS.
<br /> MW#4 showed TPH as gasoline and BTEX at less than 50 ppb, 6.0 ppb, less than 0.3 ppb,
<br /> Iess than 0.3 ppb, and Iess than 0.6 ppb, respectively.
<br /> MW#5 showed nondetect for all constituents.
<br /> 08-17-90 Monitoring wells MW#2A,MW#4A,MW#5A,MW#8,MW#9,and MW#11 were sampled
<br /> this date. Depth to water measurements ranged from approaamately 34' BGS to 40' BGS.
<br /> Flow direction was tol�the north northeast.
<br /> MW2A showed TPH as gasoline and BTEX at 160 ppb,0.6 ppb, less than 0.3 ppb,less than i
<br /> 0.3 ppb, and less than 0.6 ppb.
<br /> MW#4A,MW#5A and MW#9 were nondetect for TPH as gasoline and BTEX at detection
<br /> limits of 50 ppb, and 0.3 ppb, respectively.
<br /> MW#8 showed TPH as gasoline at 120 ppb and was nondetect for BTEX. j
<br /> MW#11 showed TPH as gasoline at 83 ppb, B at 0.5 ppb, and TEX were not detected. I
<br /> 10-22-90 Monitoring wells MW#2A,MW#4A,MW#5A,MW#8,MW#9,and MW#10 were sampled
<br /> this date. Depth to water measurements ranged from 2T BGS to 40' BGS. Flow direction I
<br /> was to the north northeast.
<br /> MW#2A showed TPH as gasoline at 160 ppb, B at 0.6 ppb, TEX was not detected.
<br /> MW#4A showed nondetect for all constituents.
<br /> MW#5A showed TPH as gasoline and BTEX at less than 50 ppb,0.9 ppb, 3.0 ppb, 2.0 ppb,
<br /> and 11 ppb, respectively.
<br /> MW#8 showed TPH as gasoline and BTEX 78 ppb, 1.0 ppb, 0.8 ppb, less than 0.3 ppb, and
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