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TABLE 3 <br /> GROUNDWATER ANALYTICAL RESULTS-PAHs <br /> VERNALIS PUMP STATION <br /> Vernalis,California <br /> Concentrations reported in micrograms per liter(pg/L)unless noted <br /> Dibenzo <br /> Benzo(b)- Benzo- (a,h)- Indeno- <br /> Date Acenaph- Acenaph- Anthra- Benzo(a)- Benzo(a)- fluoran- (g,h,i)- Benzo(k)- Chrys- anthra- Fluoran- Fluor- (1,2,3-cd)- Naph- Phenan- Pyr- <br /> Sample ID Collected thene thylene cene anthra-cene pyrene thene perylene fluoran-thene ene cene thene ene pyrene thalene threne ene <br /> MW-6 01/25/06D <0.01 <0.02 <0.02 <0.02 <0.02 0.044 <0.02 <0.01 <0.02 <0.02 <0.01 <0.01 <0.02 <0.01 <0.01 <0.02 <br /> (cont) 05/04/06* <0.009 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.009 <0.02 <0.02 <0.009 <0.009 <0.02 0.014 J <0.009 <0.02 <br /> 08/10/06 <0.009 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.009 <0.02 <0.02 <0.009 <0.009 <0.02 <0.009 <0.009 <0.02 <br /> 11/07/06 <0.01 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.01 <0.02 <0.02 <0.01 <0.01 <0.02 <0.01 <0.01 <0.02 <br /> 11/07/06D <0.009 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.009 <0.02 <0.02 <0.009 <0.009 <0.02 <0.009 <0.009 <0.02 <br /> MW-7 07/19/05 0.05 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.01 <0.02 <0.02 <0.01 <0.01 <0.02 0.04 0.01 <0.02 <br /> 10/18/05 0.2 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.01 <0.02 <0.02 0.01 0.02 <0.02 0.06 0.06 <0.02 <br /> 01/25/06 0.024 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.01 <0.02 <0.02 <0.01 0.019 <0.02 0.046 <0.01 <0.02 <br /> 05/04/06* 0.22 E <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.009 <0.02 <0.02 <0.009 0.023 J <0.02 0.023 J 0.039 J 0.025 J <br /> 05/04/06D 0.059 J <0.02 E <0.02 E <0.02 E <0.02 E <0.02 E <0.02 E <0.009 E <0.02 E <0.02 E <0.009 E <0.009 E <0.02 E <0.009 E 0.014 J <0.02 E <br /> 08/10/06 <0.01 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.01 <0.02 <0.02 <0.01 <0.01 <0.02 <0.01 <0.01 <0.02 <br /> 08/10/06D <0.01 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.01 <0.02 <0.02 <0.01 <0.01 <0.02 <0.01 <0.01 <0.02 <br /> 11/07/06 <0.01 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.01 <0.02 <0.02 <0.01 0.010 J <0.02 0.027 J <0.01 <0.02 <br /> SCREENING WQO 20 4 --- 2100 5 0.04 5 0.004 5 0.04 5 --- 0.04 5 0.4 5 0.0085 5 280 5 280 5 0.04 5 21 4 --- 210 5 <br /> LEVELS ESL 20 6'8'9 30 8'9'10 0.73 8'9'10 0.027 8'9'10 0.014 8,9 0.029 '8'9'10 0.1 8'9'10 0.029 7,9 0.049 7,9 0.0085 7,9 8 8'9'10 3.9 8'9'10 0.029 '8'9'10 17 7,9 4.6 8,9,10 2 8,10 <br /> Abbreviations: <br /> <=Analyte not detected at or above the laboratory reporting limit shown <br /> D=Duplicate sample(labeled differently on chain-of-custody form) <br /> E=Indicates the reported value is estimated due to quality control results. <br /> ESL=Environmental Screening Level <br /> ID=Identification <br /> J=Indicates the reported value is an estimated concentration detected between the method detection limit and limit of quantitation. <br /> NS=Not sampled <br /> PAHs=Polynuclear aromatic hydrocarbons <br /> WQO=Water Quality Objective <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 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. There was insufficient volume of water in the well for sample collection. <br /> 3. Well not accessible. <br /> 4. WQO(Tastes and Odors)that prohibits adverse tastes and odors or nuisance conditions. <br /> 5. WQO(Toxicity)that prohibits toxic chemicals in toxic amounts. <br /> 6. ESL for groundwater protection(drinking water source),based on"Ceiling Level(Nuisance/Aesthetic Concerns)." <br /> 7. ESL in groundwater for human health protection,based on direct contact exposue pathways and the California Primary MCL. <br /> 8. ESL in groundwater for the protection of ecological receptors. <br /> 9. ESL in surface water for protection of human health. <br /> 10.ESL in surface water for protection of ecological receptors. <br /> Sources: <br /> ESLs from"Screening for Environmental Concerns at Sites with Contaminated Soil and Groundwater"(Interim Final),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. (WQOs used are the most conservative outlined in the letter from RWQCB dated April 16,2004-Appendix A-Reports Tri-Regional Board <br /> Staff Recommendations for Preliminary Investigation and Evaluation of Underground Tank Sites.) <br /> Page 2 of 2 <br />