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TABLE 4 Hydropunch Grab Groundwater Chemical Analytical Data(PAHs) Tracy Byron Road Tracy, California Concentrations reported in milligrams per kilogram(mg/kg) Dibenzo Sample Benzo(b)- Benzo- Benzo(k) (a,h) Indeno Soil Ground Depth Date Acenaph- Acenaph- Anthra- Benzo(a)- Benzo(a)- fluor- (g,h,i) fluoran- anthra- Fluoran- (1,2,3-cd) Naph- Phenan- Boring ID water ID (bgs) Collected thene thylene cene anthracene pyrene anthene perylene thene Chrysene cene thene Fluorene pyrene thalene threne Pyrene SB-4 GW-4-12' 12 10/22/03 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 SB-8 GW-8-13 13 10/22/03 0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 0.0002 <0.0001 <0.0001 0.0001 <0.0001 <0.0001 <0.0001 0.0001 SB-10 GW-10-15 15 10/23/03 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.000 l <0.0001 <0.0001 <0.0001 <0.0001 SB-12 GW-12-13 13 10/22/03 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.000 l <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.000 l <0.0001 <0.0001 <0.0001 <0.0001 SB-14 GW-14-15.5 15.5 10/23/03 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 SB-16 GW-16-16 16 10/23/03 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 SB-18 GW-18-15 15 10/24/03 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 SB-20 GW-20-15 15 10/27/03 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 0.0002 <0.0001 SB-24 GW-24-15 15 10/27/03 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 SB-26 GW-26-27 27 10/30/03 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 SB-27 GW-27-24 24 10/28/03 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SB-29 GW-29-18 18 10/28/03 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 0.0001 <0.000'1 <0.0001 <0.0001 <0.0001 SB-31 GW-31-17 17 10/29/03 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 SB-33 GW-33-17 17 10/29/03 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 SB-34 GW-34-19 19 10/30/03 0.0014 <0.0001 0.0004 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 0.0005 <0.0001 0.0014 0.0004 0.0002 SB-35 GW-35-18 18 10/30/03 0.0003 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 0.0002 <0.0001 0.0007 0.0004 <0.0001 Notes: PAHs=Polynuclear aromatic hydrocarbons bgs=Below ground surface <=Less than laboratory reporting limits NA=Not analyzed 1. Grab groundwater sample not collected using a Hydropunch.