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�w w� �w ws r■r ar wr aw w w ww M M Ta • Historic Groundwater Sample Analytical Results-Benzene Earthgrains Baking Companies,Inc 2651 South Airport Way Stockton,California 95206 Date Sample 1D I Concentration MW-1 MW-2 MW-3 MW-4 MW-5 MW-6 MW-7MNDO MW-9 MW-10 MW-11 MW-12 MW-13 SP-1 SP-2 PZ-1 PZ-2 7/10/1987 6,800 ND(O 5 ND(O 5 - - 4/26/1988 2 300 NS NS 19 ND(O 5 3/19/1990 5,120 ND(O 5 ND 0 5 ND(05) ND 0 5 ND(O 5 558 - 12/20/1990 7,100 NQ 0 5 ND(05) NS NS ND(O 5 NS - - 4/9/1992 1,620 8 ND(O 5 N5 NS ND(O 5 NS 8/19/1992 4,720 NS NS NS NS NS NS ND(O 5 12/23/1992 2,650 NS NS NS NS NS NS ND 05 4/7/1993 2,300 NS NS NS NS ND(O 5 NS ND(O 5 - 7/30/1993 1,900 NS ND(O S NS NS ND(O S NS ND(O 5 10/21/1993 2,200 NS NS NS NS ND 05 NS ND(O 5 12/29/1993 1,700 NS NS NS NS ND(O 5 NS ND(O 5 3/23/1994 2,000 ND(O 5 ND(O 5 230 NS ND(O 5 NS NO(O 5 ND(O 5 17 ND(O 5 ND 0 5 99 6/7/1994 1,500 046 ND(O 5 210 NS ND(O 5 NS ND(O 5 ND(O 5 43 052 045 150 9/8/1994 1,500 21 ND(O 5 180 NS ND(O 5 NS ND(O 5 052 92 ND(O 5 ND(O 5 160 2/12/1996 2,400 ND(O 5 ND(O 5 75 NS ND(O 5 NS NS ND(O 5 ND(O 5 ND(O 5 31 49 5/14/1996 960 ND(O 5 NO(O 5 66 NS ND(O 5 NS NS ND(O 5 1 2 ND(O 5 74 65 9/18/1996 890 ND(O 5 ND(O 5 ND(O 5 ND Q 5 ND(O 5 ND(O 5 ND(O 5 NS 55 NS NS 21 12/18/1996 780 ND 4 5 ND(O 5 54 ND(O 5 ND 0 5 ND(O 5 ND(O 5 ND(O 5 ND(O 5 ND(O 5 16 ND(O 5 7/15/1997 820 ND05 ND05 ND05 ND45 ND05 25 ND05 ND05 14 ND05 85 NDO5 10/23/1997 500 ND 4 5 ND(O 5 ND(O 5 ND(O 5 NS 16 ND(O 5 NS 066 ND(O 5 32 ND(O 5 1/29/1998 950 NS NS NS NS NS ND(5 0 ND(5 0 NS ND(5 0 NS 17 ND(5 0 5/21/1998 620 NS NS NS ND 1 0 NS ND(i 0 ND(1 0 NS NS ND(1 0 26 NS 10/28/1998 170 ND(O 5 NS 1 1 ND(O 5 NS IND(O 5 ND(O 5 NS 1 0 ND(O 5 11 ND(O 5 5/28/1999 240 MNS ND05 NDO5 ND05 ND(05) ND(05) ND05 ND45 28 ND05 18 NDO5 8/18/1999 630 NS 13 NS NS NS NS 12 15 NS 57 11 3,300 NS 3,700 230 11/8/1999 1,400 NS ND 0 5 NS NS NS NS NO(O 5 ND(O 5 NS 14 ND(O 5 2,800 24 ISO 18 3/13/2000 280 NS 19 NS NS NS NS ND(O 5 23 NS 59 ND(O 5 1 400 39 190 31 7/2/2000 1,200 NS 70 NS NS NS NS 46 91 NS 26 62 1,900 25 230 60 10/19/2000 560 NS ND(1 0 NS NS NS NS ND(O 5 ND 0 5 NS 57 ND(O 5 2,000 1 33 4,600 81 1/18/2001 840 NS NS ND(O 5 NS NS NS NS ND(O 5 IND(O 5 NS 53 ND(O 5 1,900 ND(O 5 620 14 4/19/2001 950 NS NS ND(O 5 NS NS NS NS ND(O 5 ND O 5 NS 22 ND(O 5 1,500 35 650 200 7/19/2001 970 NS NS ND(O 5 NS NS I NS NS ND(O 5 IND(O 5 NS 18 ND(O 5 2,000 11 3,700 35 10/24/2001 190 NS NS ND(O 5 NS NS NS NS ND(O 5 ND(O 5 NS 17 ND(O 5 2,100 68 5,100 140 1/24/2002 910 NS NS 096 NS NS NS NS ND(O 5 ND(O 5 NS 14 ND(O 5 2,100 710 3,800 NQ 50 4/26/2002 18 NS NS ND(O 5 NS NS NS NS ND(O 5 ND(O 5 NS ND(O 5 ND(O 5 620 ND(O 5 370 ND(2 0 8/1/2002 29 NS NS ND(O 5 NS NS NS NS ND(O 5 ND(O 5 NS ND(O 5 ND(O 5 670 35 280 48 11/5/2002 ND(O 5 NS NS ND(O 5 NS NS NS NS ND(O 5 ND 0 5 NS ND(O 5 ND(O 5 490 12 ND(O 5 ND(O 5 2/5/2003 67 NQO5 ND05 N605 ND05 ND05 13 ND05 ND45 ND45 ND05 ND05 ND05 490 ND50 75 ND50 6/24/2004 31 ND45 ND05 ND45 ND05 ND05 ND05 ND45 ND45 ND05 21 ND45 ND05 920 ND25 2200 ND(10) 10/7/2004 180 NS NS NS ND(O 5 NS 32 ND(O 5 NS IND(O 5 23 19 NS 1,700 ND(2 5 1,800 110 1/31/2005 180 NS NS NS ND(O 5 NS 32 ND(O 5 NS ND(O 5 45 ND(O 5 NS 1,500 ND(2 5 1,700 110 4/25/2005 27 NS NS NS ND(O 5 NS 28 ND(O 5 NS ND(O 5 ND 0 5 ND(O 5 NS 920 ND(2 5 2,200 ND 10 7/25/2005 180 ND 0 5 ND(O 5 ND 0 5 ND(O 5 ND(O 5 24 ND(O 5 ND(O 5 ND(0_2L 099 NDJO 5 ND(O 5 1,100 ND(2 5 2,500 I l CY Vm II 10 Notes uglL Results reported in micrograms per liter ND-Not detected at or above the laboratory detection limit shown in parentheses NS Not sampled ENV/624001321121382eg/Investigation and Quarterly Reports/Table 5 Historic Benzene Results(2005_03)XLS/Benzene Values Page 1 of 4