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TABLE 2 SUMMARY OF ANALYTICAL RESULTS-GROUNDWATER FAYETTE MANUFACTURING SITE TRACY,CA (Page 7 of 7) ANALYTES OF CONCERN GEOCHEMICAL PARAMETERS Sample Date TPHg/GR B T E X TBA DIPE ETBE TAME EDB 1,2-DCA MTBE DO CO= I DFI N S TA Eh ID u /L u !L ug/L. u /L u /L u !L u !L u /L u /L u /L u /L u /L .-IL m /L m /L m /L m /L m /L mV MW9 10/07/09 <50 <0.5 <0.5 <0.5 <5.0 NA NA NA NA NA NA <0.5 04/16/10 <50 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA <0.5 - 05/19/11 <50 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA <0.5 3.29 - 23 12/29/11 NS NS NS NS NS NS NS NS NS NS NS NS -- - - - - - 01/04/13 NS NS NS NS NS NS NS NS NS NS NS NS -- - -- 06/21/13 <50 <0.5 <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 1.2 - - 214 SB1-GW 09/24/96 <50 <0.3 0.6 <0.3 <0.6 -- - -- -- -- - <1.0 <1.0 22 <0.05 25 150 360 -56.1 SB2-GW 09/24/96 67,000 2,200 370 5,400 19,000 - <50 <1.0 90 <0.05 6 80 620 -- SB3-GW 09/24/96 <50 <0.3 0.7 <0.3 <0.6 3.5` <1.0 35 <0.05 470 17 170 -123.4 SB4A-GW 10/02/96 4,600 58 16 270 250 <1.0 <1.0 55 <0.1 9 128 510 -201 SB5-GW 10/02/96 <50 <0.3 <0.3 <0.3 <0.6 - - <1.0 <1.0 54 <0.1 30 243 440 -214 SB6-GW 10/02/96 5,200 160 32 210 910 - <1.0 2.1 <0.5 <0.1 37 180 310 -143.3 SB7-GW 10/02/96 <50 <0.3 <0.3 <0.3 <0.6 - <1.0 -- - - -- -- -- -- GP1-W15 04/05/04 12,000 64 10 460 1,100 <200 <20 <20 <20 <20 <20 <20 - - GP2-W16 04/05/04 38,000 98 490 2,500 6,700 <400 <40 <40 <40 <40 <40 <40 - - GP3-W16 04/05/04 <50 <0.5 <0.5 <0.5 <1.0 <20 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 - - GP-4 09/13/07 15,000 600 <10 940 770 <100 <10 <10 <10 <10 <10 <10 -- -- -- -- -- -- -- GP-5 09/13/07 22,000 1,100 62 1,400 1,700 <50 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 -- - -- - -- -- - GP-6 09/13/07 13,000 480 130 930 2,400 <50 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 - - - - -- -- -- GP-7 09/13/07 7,900 4.4 4.2 400 960 <10 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 -- -- -- -- -- -- -- GP-8 09/13/07 33,000 <12 <12 1,800 4,000 <200 <20 <20 <20 <20 <20 <20 -- -- -- -- -- - -- GP-9 09/13/07 <50 <0.5 <0.5 <0.5 <1.0 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 - - - - - -- -- -- -- -- -- -- CPT1-W19 04/08/04 62 0.9 <0.5 1.5 3.6 <20 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 - - - CPT1-W52 04/08/04 <50 <0.5 <0.5 <0.5 <1.0 <20 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 -- -- - - -- - -- < <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 - DW1 09/08/05 <50 <0.5 <0.5 <0.5 <1.0 5.0 -- - DW2 09/08/05 <50 <0.5 <0.5 <0.5 <1.0 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 -- -- -- - - - - AS-1 10/07/09 <50 <0.5 <0.5 <0.5 <0.5 NA NA NA NA NA NA 1.5 -- -- -- -- -- -- - AS-2 10/08/09 57 2.7 <0.5 <0.5 <0.5 NA NA NA NA NA NA 1.4 - - - DP-1 10/08/09 36 85 <0.5 13 19.3 NA NA NA NA NA NA 3.6 -- -- -- -- -- -- -- DP-2 10/08/09 <50 6.5 <0.5 <0.5 1.2 NA NA NA NA NA NA 1.4 - - - - DP-3 10/08/09 1,200 240 <0.5 99 27.2 NA NA NA NA NA NA 8.4 - - Notes: NS denotes Not Sampled mg/L denotes milligrams per liter or parts per million NA denotes Not Analyzed ug/L denotes micrograms per liter or parts per billion ETBE denotes ethyl tertiary butyl ether(EPA Method 8260 or 8260B) <denotes not detected at or above Stated Method Detection Limit TAME denotes tertiary amylmethyl ether(EPA Method 8260 or 82608) -denotes not analyzed EDB denotes tertiary amylmethyl ether(EPA Method 826013) denotes that MTBE has been confinned by Method 8260 1,2-DCA denotes methyl tertiary butyl ether(EPA Method 8260B) ••denotes MTBE detected by EPA Method 8020 only MTBE denotes methyl tertiary butyl ether(EPA Method 8020,8260,or 8260B) TPHg/GRO denotes total petroleum hydrocarbons as gasoline/Gasoline Range Organics(EPA DO denotes dissolved oxygen Method 3550/8015) CO2 denotes Carbon Dioxide B denotes benzene(EPA Method 8020,8021 B,or 8260B) DFI denotes dissolved ferrous iron T denotes toluene(EPA Method 8020,8021 B,or 8260B) N denotes nitrate E denotes ethylbenzene(EPA Method 8020,8021 B,or 82608) S denotes sulfate X denotes total xylenes(EPA Method 8020,802113,or 8260B) TA denotes total alkalinity TBA denotes tertiary butanol(EPA Method 8260 or 8260B) Eh denotes redox potential in millivolts(mV),field measured DIPE denotes di-isopropyl ether(EPA Method 8260 or 8260B) (field measurement during well purging process) M»asI-3-Gw GW-Aw.l r-e 141