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L & M OPERABLE UNIT-THIRD QUARTER 2013 SITE STATUS, REMEDIAL SUMMARY, <br /> AND GROUNDWATER MONITORING REPORT <br /> Groundwater Monitoring and Sampling <br /> November 1, 2013 <br /> Number of Number of Minimum Maximum <br /> Constituents Detections A-Zone Wells Concentration Detected ntration in Detected <br /> e <br /> above the MRL Analyzed mg/ (Well ID) Concentration in <br /> mg/L (Well ID) <br /> TPHg 3 12 2.2 (MW-9) 3.5 (MW-18) <br /> TPHd 9 12 0.061 (MW-25) 3 (MW-9) <br /> TPHo 5 12 0.059 (MW-18 0.11 (MW-23) <br /> Benzene 1 12 --- 0.052 (MW-9) <br /> Toluene 2 12 0.00052 (MW-18) 0.0032 (MW-9) <br /> Ethylbenzene 3 12 0.00062 (MW-20) 0.0011 (MW-9) <br /> Xylenes 3 12 0.0012 (MW-20) 0.0045 (MW-9) <br /> MTBE 1 12 --- 0.0025 (MW-9) <br /> TBA 1 12 --- 0.067 (MW-9) <br /> Definitions: <br /> ID = Identification <br /> mg/L = Milligrams per liter <br /> MRL = Method reporting limit <br /> MTBE= Methyl tertiary butyl ether <br /> TBA = Tertiary butyl alcohol <br /> TPHd = Total petroleum hydrocarbons as diesel <br /> TPHg = Total petroleum hydrocarbons as gasoline <br /> TPHo = Total petroleum hydrocarbons as motor oil <br /> --- = Not applicable <br /> 2.3.2.3 Dissolved Arsenic <br /> Dissolved arsenic with concentrations detected at or above the MRLs is summarized below. <br /> Number of Number Minimum Maximum <br /> Detections of A-Zone Detected Detected <br /> Constituents above the Wells Concentration in Concentration in <br /> MRL Analyzed mg/L (Well ID) mg/L (Well ID) <br /> Arsenic 6 12 0.0066 (MW-9) 0.13 (MW-20) <br /> Definitions: <br /> ID = Identification <br /> mg/L = Milligrams per Liter <br /> MRL = Method Reporting Limit <br /> 2.3.2.4 Quality Assurance/Quality Control Samples <br /> Stantec's equipment blanks (QCEB-1-RM, QCEB-1-PV, QCEB-2-RM, QCEB-2-PV, QCEB-3- <br /> RM, and QCEB-3-PV) were analyzed for the presence of petroleum hydrocarbons compounds. <br /> 5 5ta ntec 2.3 <br />