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Historical Groundwater Monitoring Data (9/27/99 through 314/04) DATE DTW ELEV B T E X MTBE TPH-G OXYGENATES/ADDITIVES Detection Limits--+ 0.5 0.5 0.5 1.0 0.5 0.05 0.5-5.0 Ng/L pgn- u8/L p8[L N8/- mg 1, PWL Analytical Methods--► 826013t 8260Bt 8260Bt 3260Bt 826013t 8015M$- 8260E Monitoring Well& Elevation NIW-1 (33.84) EtOH,EDB,1,2-DCA-NA; 9/2711999 I6.64 17.20 ND ND ND ND 2,700 ND TBA-98;TAME-7.7 12/10/1999 16.00 17.84 ND 0.6 ND ND 5,400 ND NA 3/27/2000 14.18 19.66 5.2 2.3 3 7.8 11,600 0.19 EtOti,EDB,1,2-DCA-NA; TBA-1,130;TAME-58 6/23/2000 15.62 18.22 2.6 0.6 5.7 7.2 770 0.09 NA 9/8/2000 17,61 16.23 NS NS NS NS NS NS NS 12/29/2000 NM NM ND ND ND ND 8,800 0,09 TAME-28 1/16/2001 16.15 17.69 NS NS NS NS NS NS NS 315/2001 15.74 18.10 ND ND ND ND 16,000 0.07 TAME-51 614/2001 17.62 16.22 ND ND ND ND 27,000 ND TAME-100 9/10/2001 20.46 13.38 ND ND ND ND 23,000 0.28 ND 12117/2001 19.06 14.78 ND ND ND ND 13,000 ND ND (36.16*) 9/26/2002 21.81 14,35 <0A <0.5 <0.5 <1.0 1,700 <0.05 TAME-2.7 12/27/2002 19.33 16.83 <2.0 <2.0 <2.0 <4.0 23,000 <0.05 TBA-63:TAME-75 3/21/2003 18.08 18.08 <2.0 Q.0 <2.0 <4.0 2,800 <0.05 TAME-5,9 6/25120D3 20.82 15.34 <10 4.0 Q.0 <4.0 10,000 <0.05 TAME-33 7/22/2003 1 22.04 14.12 NA NA NA NA 3,900 NA NA 8/19/2003 22.79 13.37 NA NA NA NA 2,800 NA NA 9/30/2003 24,09 12,07 <0.5 <0.5 <0.5 <I.0 35 <0.5 <0.5-<5.0 10/2912003 Monitoring Well MW-1 Destroyed MW-2 (33.65) EtOH,EDB,1,2-DCA-NA; 9/27/1999 16.32 17.33 ND ND ND ND 5,7110 ND TAME-16 12/10/1999 15.70 17.95 1.5 ND 1 ND ND ND NA 3/2712000 13.82 19.83 8.2 8.7 12 25 1,2 0.24 NA 6/23/2000 15.65 I8A0 5.5 1 8.2 16 95 0.16 NA 9/8/2000 17.73 15.92 NS NS m NS NS NS NS NS 12/29/2000 NM NM 1 0.6 2.2 1.6 ND 0.09 ND 1/16/2001 15,89 17.76 NS NS NS NS NS NS NS 3/5/2001 15.52 18.13 0.5 ND 1.5 0.9 ND 0.05 ND 6/4/2001 17.30 16.35 ND ND ND ND ND ND ND 9110/2001 19.20 14.45 37 1 19 53 1 90 ND 0.63 ND 12/17/2001 18.75 14,90 ND 0,7 ND 0.9 4.l ND ND (35.97*) - 9/26/2002 21.40 14.57 <0.5 <0.5 <0.5 <1.0 330 <0.05 <0.5-<5.0 12/27/2002 19.16 16.81 <0.5 <0.5 <0.5 <1.0 I I <D.OS <0.5-<5.0 3/21/2003 17.83 18,14 <0,5 <0.5 <0.5 <1.0 <0.5 <0.05 <0.5-<5.0 6/25/2003 2D.55 15A2 <0.5 <0.5 <0.5 <1.0 I8 <0.05 <0.5-<5.0 7/2212003 2 L65 14,32 NA NA NA NA 220 NA NA 8/1912003 22,89 13.08 NA NA NA NA 110 NA NA 9/30/2003 DRY NM NS NS NS NS NS NS NS 10131/2003 DRY NM NS NS NS NS NS NS NS l€12612003 1 23.65 1 12.32 NS NS NS NS NS NS NS 12/31/2003 1 21.58 1 14.39 <0,5 <0.5 <0.5 <1.0 <0.5 <0.05 <0.5-<5.0 i P:13000_prj13761 Soyett Manteca13761A Boyett Work Plans SRS ReportlReportslQMM1 Q0413761 Hist.G.W.Data 1004