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Table 2 <br /> Recent Groundwater Oxygenate and Fuel Additive Analytical Data <br /> Stockton Terminals Technical Committee <br /> Port of Stockton <br /> Stockton, California <br /> Sample Sample MTBE DIPE ETBE TAME TBA Methanol Ethanol 1,2-DCA EDB <br /> Identification Date (Vg/L) (pg/L) (Ng/L) (pg/L) (Ng/L) (Vg/L) (Ng/L) (Ng/L) (Ng/L) Comments <br /> AR/MW-18C 05/06/08 <0.50 <0.50 <0.50 <0.50 <5.0 <50 <50 - - <br /> R/MW-18C 08/05/08 <0.50 <0.50 <0.50 <0.50 6.2 - - - - <br /> R/MW-18C 11/05/08 <0.50 <0.50 <0.50 <0.50 6.0 - - - - <br /> R/MW-18C 02/03/09 <0.50 <0.50 <0.50 <0.50 <5.0 -- - - - <br /> AR/MW-21A 05/06/08 4.4 <0.50 <0.50 <0.50 <5.0 <50 <50 - - <br /> R/MW-21A 08/05/08 4.4 <0.50 <0.50 <0.50 <5.0 - - - - <br /> R/MW-21A 11/05/08 1.9 <0.50 <0.50 <0.50 <5.0 - - - - <br /> R/MW-21A 02/03/09 0.82 <0.50 <0.50 <0.50 <5.0 - - - - <br /> R/MW-21B 05/06/08 4.1 <0.50 <0.50 <0.50 <5.0 <50 <50 - - <br /> R/MW-21B 08/05/08 4.0 <0.50 <0.50 <0.50 <5.0 - - - - <br /> R/MW-21B 11/05/08 1.6 <0.50 <0.50 <0.50 <5.0 <br /> R/MW-21B 02/03/09 1.7 <0.50 <0.50 <0.50 <5.0 - - - - <br /> R/MW-21C 05/06/08 <0.50 <0.50 <0.50 <0.50 <5.0 <50 <50 - - <br /> R/MW-21C 08/05/08 <0.50 <0.50 <0.50 <0.50 <5.0 - - - - <br /> R/MW-21C 11/05/08 <0.50 <0.50 <0.50 <0.50 5.0 <br /> R/MW-21C 02/03/09 <0.50 <0.50 <0.50 <0.50 <5.0 - - - - <br /> AR/MW-22A 05/09/08 1,300 <2.5 <2.5 <2.5 600 <600 1 <50 - - <br /> R/MW-22A 08/07/08 1,400 <2.5 <2.5 <2.5 770 <400 1 <50 - - <br /> R/MW-22A 11/06/08 780 <2.5 <2.5 <2.5 760 <250 <80 - - <br /> R/MW-22A 02/06/09 1,000 <2.5 <2.5 <2.5 470 <250 <50 - - <br /> AR/MW-23A 05/09/08 8,200 <20 <20 <20 630 <8,000 1 <200 - - <br /> R/MW-23A 08/07/08 5,300 <20 <20 <20 520 <2,000 1 <300 - - <br /> R/MW-23A 08/26/08 4,700 - - - <10,000 - - - - <br /> R/MW-23A 2 11/06/08 4,000 <5.0 <5.0 5.3 2,000 <1,500 1 <3,000 - - <br /> R/MW-23A 02/06/09 3,500 <15 <15 <15 540 <2,000 1 <150 - - <br /> AR/MW-24A 05/09/08 810 <15 <15 <15 130 <1,500 <150 - - <br /> R/MW-24A 08/07/08 490 <15 <15 <15 150 <1,500 <150 - - <br /> R/MW-24A 08/26/08 670 -- - - <400 -- - - - <br /> R/MW-24A 11/06/08 630 <15 <15 <15 150 <1,500 <150 - - <br /> R/MW-24A 02/06/09 860 <15 <15 <15 250 <1,500 <150 - - <br /> 1009 STTC gwtables.xls Page 5 of 14 <br />