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C [ ` t t t t t t t ` t t t t t t t ! t l TAtBLE 2 SUMMARY OF ANALYTICAL RESULTS-GROUNDWATER FAYETTE MANUFACTURING SITE TRACY,CA (Page 3 of 3) POTENTIAL CONTAMINANTS OTHER GEOCHEMICAL PARAMETERS Sample Date TPHg B T E X TBA DIPE ETBE TAME MTBE DO CO2 DFI N S TA Eh ID ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L uglL mg/L mg/L mg/L mg/L mS/L mg/L mV MW4 03/11/99 68.9 <0.50 2.27 0.854 4.24 <200 <2.0 <2.0 <2.0 <2.0 -- -- -- -- -- -- -- MW4 06/24/99 <50 1.7 <0.50 <0.50 <0.50 -- -- -- -- <2.5 -- -- -- -- -- -- -- MW5 03/11/99 <50.0 <0.50 13.7 <0.50 <0.50 <200 <2.0 <2.0 <2.0 <2.0 -- -- -- -- -- -- -- MW5 06/24/99 <50.0 <0.50 0.51 <0.50 <0.50 -- -- -- -- <2.5 -- -- -- -- -- -- -- MW6 03/11/99 <50.0 <0.50 <0.50 <0.50 <0.50 <200 <2.0 <2.0 <2.0 <2.0 -- - -- -- -- - -- MW6 06/24/99 <50.0 <0.50 <0.50 <0.50 <0.50 -- - -- -- <2.5 -- - - -- -- -- - 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 67000 2200 370 5400 19000 -- -- -- -- <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 4600 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 5200 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 <1.0 33 <0.1 80 280 420 -213.6 Notes: mg/L denotes milligrams per liter or parts per million DIPE denotes di-isopropyl ether(EPA Method 8260) ug/L denotes micrograms per liter or parts per billion ETBE denotes ethyl tertiary butyl ether(EPA Method 8260) <denotes not detected at or above Stated Method Detection Limit TAME denotes tertiary amylmethyl ether(EPA Method 8260) denotes not analyzed MTBE denotes methyl tertiary butyl ether(EPA Method 8020 or 8260) *denotes that MTBE has been confirmed by Method 8260 DO denotes dissolved oxygen **denotes MTBE detected by EPA Method 8020 only CO2 denotes Carbon Dioxide TPHg denotes total petroleum hydrocarbons as gasoline(EPA Method 3550/8015) DFI denotes dissolved ferrous iron B denotes benzene(EPA Method 8020) N denotes nitrate T denotes toluene(EPA Method 8020) S denotes sulfate E denotes ethylbenzene(EPA Method 8020) TA denotes total alkalinity X denotes total xylenes(EPA Method 8020) Eh denotes redox potential in millivolts(mV),field measured TBA denotes tertiary butanol(EPA Method 8260 (field measurement during well purging process) WA1786Mable2b[03/29/2000]