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PAR-Eckert Cold Storage, Manteca,CA
<br /> November 25,2002
<br /> Page 6
<br /> Table ] -Groundwater Sample Laboratory Analytical Results (September 30, 2002)
<br /> GASOLINE OXYGENATES/ADDITIVES
<br /> B T E X TPH-G
<br /> MTBE Other Gasoline Oxygenates/Additives
<br /> ' Detection Limits: 0.5 0.5 0.5 1.0 0.05 0.5 0.5-5.0
<br /> µg/1 µPQ ! g/l µg/1 mg/l µg/l PgA
<br /> Analytical Method: 8260B 8260E 8260B 8260B 8015M 8260B 8260B
<br /> Sample I.D.
<br /> 3471A-MW1-9130/02 1,400 6.9 220 100 11 10 <5.0-<50
<br /> 3471 A-MW3-9/30/02 41 1.5 48 19 1.2 3.1 <0.5-<5.0
<br /> 3471A-MW4-9/30/02 <0.5 <0.5 <0.5 <1.0 <0.05 <0.5 1,2-DCA 3.14
<br /> 3471A-MW5-9/30/02 <0.5 <0.5 <0.5 <1.0 <0.05 1.2 <0.5-<5.0
<br /> 3471 A-MW6-9/30/02 <0.5 <0.5 <0.5 <1.0 <0.05 <0.5 <0.5-<5.0
<br /> 3471A-MW7-9/30/02 <0.5 <0.5 <0.5 <1.0 <0.05 <0.5 <0.5-<5.0
<br /> 3471 A-MW8-9/30/02 480 2.3 51 27 5.4 9.2 <2.0-<20
<br /> ' 3471A-DW-9/30/02 1 <0.5 1 <0.5 1 <0.5 <1.0 <0.05 <0.5 <0.5-<5.0
<br /> Note: MW-2 was not sampled as damage to the well casing during installation of the well prevents placement of bailers and pumps down
<br /> • the well.
<br /> Units: Analytical:
<br /> mg/L=milligrams per liter=parts per million(ppm) 8,T,E,X=benzene,toluene,ethyl benzene,total xylenes
<br /> µg/L=micrograms per liter=parts per billion(ppb) TPH-G=total petroleum hydrocarbons quantified as gasoline
<br /> Gasoline oxygenatesladditives= methyl tertiary butyl ether(MTBE),ethanol,
<br /> tertiary butanol,di-isopropyl ether(DWE),ethyl tertiary butyl ether(ETRE),
<br /> tertiary amyl methyl ether (TAME), 1,2-dibromoethane (EDB), 1,2-
<br /> dichloroethane(1,2-DCA)
<br /> ♦=all other oxygenates/additives were not detected at or above the laboratory
<br /> ' reported detection limits
<br /> One groundwater sample was collected from each of the ten Hydropunch borings (HP-1 through HP-10)
<br /> and three separate groundwater samples (CPT-1, CPT-2-S1, S2, and S3) were collected at discrete
<br /> intervals from each CPT boring pair and submitted for laboratory analyses. Samples were collected from
<br /> the following depth intervals: 22.5-26.5 feet bgs (HP1); 21-25 feet bgs (HP-2 through HP-9); 26-30 feet
<br /> bgs (HP-10); 39-43, 83-87, and 100-104 feet bgs (CPT-1-S1, S2, and S3); and, 21-25, 52-56, and 85-89
<br /> feet bgs (CPT-2-S1, S2, and S3). Laboratory analytical results indicate that TPH-G, BTEX, and selected
<br /> gasoline oxygenates/additives were not detected at or above the laboratory reported detection limits in
<br /> the groundwater samples collected from the CPT and Hydropunch borings with the following exceptions:
<br /> (1) MTBE was detected above the laboratory reported detection limit in the groundwater samples
<br /> collected from borings HP-1, HP-2, HP-4, and HP-8; (2) 1,2-DCA was detected above the laboratory
<br /> reported detection limit in the groundwater samples collected from borings HP-1, HP-2, and HP-4; (3)
<br />•' TPH-G and BTEX were detected above the laboratory reported detection limits in CPT-1-S 1 and S2; and,
<br /> (4) TEX was detected above the laboratory reported detection limits in CPT-1-S3.
<br />' MTBE was detected by EPA Method 8260B in the groundwater samples collected from borings HP-1,
<br /> HP-2, HP-4, and HP-8 at concentrations of 1.6 pg/l, 2.0 FLg/l, 1.8 4g11, and 0.7 µg11, respectively. 1,2-
<br /> DCA was detected by EPA Method 8260E in the groundwater samples collected from borings HP-1, Hp-
<br /> 2, and HP-4 at concentrations of 1.3 Ltg/i, 1.0 }tg/l, and 1.3 pg/1, respectively. THP-G and BTEX were
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<br />' �•1� CONDOR
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