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Appendix I <br /> Historical 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 (pg/L) (pg/L) (Ng/L) (pg/L) (Ng/L) (Ng/L) (Ng/L) (pg/L) (pg/L) Comments <br /> AR/MW-21C 02/05/08 <0.50 <0.50 <0.50 <0.50 <5.0 <50 <50 <br /> AR/MW-21C 05/06/08 <0.50 <0.50 <0.50 <0.50 <5.0 <50 <50 <br /> AR/MW-21C 08/05/08 <0.50 <0.50 <0.50 <0.50 <5.0 -- -- <br /> AR/MW-21C 11/05/08 <0.50 <0.50 <0.50 <0.50 5.0 <br /> AR/MW-21C 02/03/09 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> AR/MW-21C 05/04/09 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> AR/MW-21C 08/04/09 <0.50 -- -- -- -- <br /> AR/MW-21C 11/03/09 <0.50 <br /> AR/MW-21C 02/02/10 <0.50 -- -- -- -- -- -- -- - <br /> AR/MW-22A 05/25/04 1,500 <50 <50 <50 <500 <5,000 <500 <br /> AR/MW-22A 08/23/04 2,900 <10 <10 <10 440 <1,000 <100 <br /> AR/MW-22A 11/19/04 1,600 <2.5 <2.5 <2.5 2,000 <300 <25 <br /> AR/MW-22A 02/14/05 -- -- -- -- -- -- -- Well Flooded <br /> AR/MW-22A 05/19/05 4,300 <15 <15 <15 350 <1,500 <150 <br /> AR/MW-22A 09/01/05 5,400 <9.0 <9.0 <9.0 520 <1,500 <150 <br /> AR/MW-22A 11/29/05 4,500 <8.0 <8.0 <8.0 730 <800 <80 <br /> AR/MW-22A 02/06/06 -- -- -- -- -- -- -- Well Flooded <br /> AR/MW-22A 05/09/06 3,600 <9.0 <9.0 <9.0 300 <900 <90 <br /> AR/MW-22A 08/08/06 2,600 <5.0 <5.0 <5.0 310 <500 <80 <br /> AR/MW-22A 10/30/06 2,500 <5.0 <5.0 <5.0 400 <4,000 <50 <br /> AR/MW-22A 01/30/07 2,200 <7.0 <7.0 <7.0 1,200 <8,000 <70 <br /> AR/MW-22A 05/03/07 2,600 <2.5 <2.5 3.8 1,000 <250 <50 <br /> AR/MW-22A 08/02/07 2,400 <5.0 <5.0 <5.0 880 <1,500 <50 <br /> AR/MW-22A 11/01/07 1,800 <7.0 <7.0 <7.0 700 <700 <80 <br /> AR/MW-22A 02/04/08 -- -- -- -- -- -- -- Well Flooded <br /> AR/MW-22A 05/09/08 1,300 <2.5 <2.5 <2.5 600 <600 <50 <br /> AR/MW-22A 08/07/08 1,400 <2.5 <2.5 <2.5 770 <400 <50 <br /> AR/MW-22A 11/06/08 780 <2.5 <2.5 <2.5 760 <250 <80 <br /> AR/MW-22A 02/06/09 1,000 <2.5 <2.5 <2.5 470 <250 <50 <br /> AR/MW-22A 05/07/09 2,300 <4.0 <4.0 4.4 390 <1,500 <50 <br /> AR/MW-22A 08/07/09 1,200 <2.5 <2.5 4.1 240 <1,500 <50 <br /> AR/MW-22A 11/06/09 1,000 <2.5 <2.5 2.6 310 <800 -- <br /> AR/MW-22A 02/04/10 1,300 <2.5 <2.5 2.7 380 <900 -- -- -- <br /> AR/MW-23A 05/25/04 17,000 <50 <50 <50 1,100 <5,000 <500 <br /> AR/MW-23A 08/17/04 -- -- -- -- -- -- -- SPH Sheen observed <br /> AR/MW-23A 11/19/04 12,000 <25 <25 <25 640 <2,500 <250 <br /> 1 Q10 STTC gwtables.xlsx Page 30 of 77 <br />