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TABLE;3 <br /> e <br /> GROUNDWATER ANALYTICAL RESULTS--PAHs <br /> VERNALIS PUMP STATION 4 <br /> Vernalis,California c <br /> Concentrations reported in Itg/L unless noted <br /> Benzu(b)- Benzo- Benzo(k)- Dibenz Indeno- <br /> Date Acenaph- Acenaph- Anthra- Benzo(a)- Benzo(a)- fluoran- (g,lt,i)- fluoran- Chrys- (a,h)-anthra- Fluoran- Fluor- (1,2,3-ed)- Naph- Phenan- Pyr- <br /> Sample ID Collected thene th lene Gene anthracene pyrene thene perylefle thene ene cene thene enerene thalene threne ene <br /> �f <br /> M. _ -... <br /> - <br /> .... .,. Q4 __ ._. . ,. ..� __.. __,� . . ....0: . . �>_,_... .004 _ , • . <br /> t - <br /> MW-6 07/19/05 <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 0.02 <0.02 <br /> 10/18/05 <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 0.02 <0.009 <0.02 <br /> 01/25/06 <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 /> 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 /> 01/24/07 <0.01 <0.02 <0.02 0.054 0.030 J 0.075 0.073 0.074 0.069 0.075 0.035 J <0.01 0.073 0.032 J 0.022 J 0.033 J <br /> 01/24/07D <0.01 <0.02 <0,02 <0.02 <0.02 <0.02 <0.02 <0.01 <0.02 <0.02 <0.0i <0.01 <0.02 0.0171 <0.01 <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 /> 01/24/07 0,033 J <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.009 <0.02 <0.02 <0.009 <0.009 <0.02 0.050 <0.009 <0.02 1 <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 /> DTW=Depth to water <br /> E--Indicates the reported value is estimated due to quality control results. <br /> ESL=Environmental Screening Level 1 <br /> ID=Identification <br /> J=Indicates the reported value is an estimated concentration detected between the method detection limit and limit of quantitation. 1 <br /> MCL-Maximum Contaminant Level l <br /> MW=Monitoring well <br /> i <br /> NS=Not sampled <br /> PAHs-Polynuclear aromatic hydrocarbons <br /> RWQCB=Regional Water Quality Control Board <br /> SPO=Separate-phase hydrocarbon <br /> WQO-Wafer Quality Objective <br /> pg/L=Micrograms per liter <br /> Notes: t <br /> Values in Sold exceeds either the WQO or CSL 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, v <br /> L WQO(Tastes and Odors)that prohibits adverse tastes and odors or nuisance conditions. <br /> 2. WQO(Toxicity)that prohibits toxic chemicals in toxic amounts. <br /> z <br /> 3. ESL for groundwater protection(drinking water source),based on"Ceiling Level(Nuisance/Aesthetic Concerns)." <br /> 4. ESL in groundwater for human health protection,based on direct contact exposue pathways and the California Primary MCL, <br /> 5. ESL in groundwater for the protection of ecological receptors. <br /> 6. ESL in surface water for protection of human health. 1 <br /> 7. ESL in surface water for protection of ecological receptors. <br /> 8. Not sampled due to the presence of SPO. <br /> 9. There was insufficien€volume of water in the well for sample collection. <br /> 10.Well not accessible. <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 conserva€ivc 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.) m <br /> fa ON mq <br /> a <br /> . - Page of 2 - From Science to Solutions <br />