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TABLE 2 <br /> GROUNDWATER ANALYTICAL RESULTS—TPHd,TPHg,and BTEX <br /> VERNALIS PUMP STATION <br /> Vernalis,California <br /> Concentrations reported in micrograms per liter(µg/L)unless noted <br /> Notes: <br /> Values in Bold exceeds either the WQO or ESL or both. <br /> *Starting with the second quarter 2006,laboratory analytical data are being qualified and flagged as appropriate. Please see the <br /> respective Data Usability Summary section of the reports for detailed information on the qualifiers used. <br /> 1. Not sampled due to the presence of SPO. <br /> 2. The observed sample pattern includes#2 fuel/diesel and an additional pattern that elutes later in the DRO range. <br /> 3. The observed sample pattern includes#2 fuel/diesel and individual peaks eluting in the DRO range. <br /> 4. The surrogate recoveries for the LCS/LCSD associated with this sample were outside QC limits. <br /> Since the surrogate spike recoveries for the project samples were within limits,the data was reported. <br /> 5. The volume of water in the well was insufficient for sample collection. <br /> 6. The observed pattern in not typical of#2 fuel/diesel.It elutes in the DRO range later than#2 fuel. <br /> 7. The observed pattern in not typical of#2 fuel/diesel.The reported result is due to grouping of peaks eluting in the DRO range. <br /> 8. Well not accessible. <br /> 9. WQO(Tastes and Odors)that prohibits adverse tastes and odors or nuisance conditions. <br /> 10.WQO(Toxicity)that prohibits toxic chemicals in toxic amounts. <br /> 11.WQO(Chemical Constituents)that requires compliance with California drinking water MCLS and generally prohibits adverse effects on beneficial uses. <br /> 12.ESL for groundwater protection(drinking water source),based on"Ceiling Level(Nuisance/Aesthetic Concerns)." <br /> 13.ESL in groundwater for human health protection,based on direct contact exposure pathways and the California Primary MCL. <br /> 14.ESL in surface water for the protection of human health. <br /> Sources: <br /> ESLs from"Screening for Environmental Concerns at Sites with Contaminated Soil and Groundwater"(Interim Final), <br /> San Francisco Bay RWQCB(February 2005). Most conservative levels are used. <br /> WQOs from"Water Quality Control Plan(Basin Plan)for the Sacramento River Basin and the San Joaquin River Basin,"4th ed. <br /> (WQOs used are the most conservative outlined in the letter from RWQCB dated April 16,2004-Appendix A-Reports <br /> Tri-Regional Board Staff Recommendations for Preliminary Investigation and Evaluation of Underground Tank Sites). <br /> Page 3 of 3 <br />