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Table 3 <br /> Total Extractable Petroleum Hydrocarbons as Diesel Groundwater Analytical Results <br /> Union Pacific Railroad Company <br /> Former Maintenance Facility, Tracy, California <br /> 2010/2011 Annual Groundwater Monitoring Report <br /> Cleanup Levels Total Petroleum <br /> 100 100 <br /> (CAO 92-707) Hydrocarbons <br /> Monitoring Well Sample Date TEPH-d(Ng/L) TEPH-d SG (Ng/L) Notes <br /> 03/16/09 FP FP <br /> 11/19/09 FP FP <br /> 03/16/10 FP FP <br /> 11/22/10 FP FP <br /> 03/16/11 FP FP <br /> Notes&Key: <br /> a Samples with detectable TEPH as diesel were reanalyzed using a silica gel cleanup sample preparation <br /> Sample results qualified due to samples exceeding temperature range upon receipt at the laboratory <br /> Sample results qualified due to high surrogate recoveries <br /> d Reported as an unknown hydrocarbon within the diesel range <br /> pg/L=Micrograms per liter <br /> Values in bold type exceed the cleanup level of 100 pg/L for TEPH diesel as stated in California Regional Water <br /> Quality Control Board-Central Valley Region Cleanup and Abatement Order(CAO)92-707 <br /> Silica gel cleanup performed using United States Environmental Protection Agency(USEPA)Method 3630C <br /> DUP=Duplicate sample <br /> FP=Free product present;no sample collected <br /> NA=Not analyzed <br /> ND<=Denotes constituent not detected at or above reporting limit listed after the less-than sign <br /> SG=silica gel cleanup preparation <br /> TEPH-d=Total extractable petroleum hydrocarbons as diesel <br /> TEPH-d analyzed using USEPA Method 80158 <br /> Data Qualifiers(Laboratory) <br /> a=The diesel pattern appears degraded <br /> x=Results within quantitation range;chromatographic pattern not typical of fuel <br /> h=Sample analyzed outside the recommended holding time <br /> G=The reporting limit is elevated due to matrix interference <br /> =Surrogate recovery is outside stated control limits <br /> Data Qualifiers(Quality Assurance Review of Sample Data Collected Before December 2006) <br /> J=Detected value considered estimated based on quality assurance review <br /> NJ=Estimated value-chromatogram did not resemble the standard hydrocarbon pattern <br /> UJ=Compound not detected at an estimated value based on quality assurance review <br /> Data Qualifiers(Quality Assurance Review of Sample Data Collected After March 2006) <br /> U=The analyte was analyzed for,but was not detected above the level of the adjusted Contract-Required <br /> Quantitation Limit(CRQL)for the sample and method. <br /> J=The analyte was positively identified;the associated numerical value is the approximate concentration of the <br /> analyte in the sample. <br /> UP Tracy Annual Tables 1-5 2011.xlsx ARCADIS Page 10 of 10 <br />