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Table 1 (Continued)
<br /> Groundwater Monitoring Data
<br /> ARCO Service Station 2168
<br /> 441 Charter Way, Stockton, California
<br /> Page 2 of 4
<br /> Well Elevation Static
<br /> Sample of Top of Water Elevation of Ethyl- Total
<br /> Number Date Casing Level Groundwater TPHG Benzene Toluene benzene Xylenes Observations
<br /> MW-3
<br /> W-39-MW3 05/11/92 9.58 39.05 -29.47 65,000 13,000 3,000 1,800 8,300 No FP, No S, Yes O
<br /> • MW-3(54) 08/24/92 9.58 40.84 -31.26 77,000 15,000 9,400 2,300 2,300 No FP, No S, Yes 0
<br /> MW-3(54) 12/17/92 9.58 41.69 -32.11 67,000 12,000 5,500 2,100 7,200 No FP, No S, Yes 0
<br /> MW-3(54) 03/10/93 9.58 39.54 -29.96 51,000 16,000 1,300 1,800 4,900 No FP, No S, Yes 0
<br /> MW-3(54) 06/10/93 9.58 37.42 -27.84 44,000 12,000 2,100 1,800 3,200 No FP, No S, Yes 0
<br /> MW-3(54) 09/02/93 9.58 38.23 -28.65 49,000 13,000 2,200 2,100 4,500 No FP, No S, Yes O
<br /> MW-3(54) 10/28/93 9.58 38.46 -28.88 46,000 14,000 1,900 2,000 4,200 No FP, No S, Yes O
<br /> MW3-36 03/23/94 9.58 38.02 -28.44 42,000 12,000 2,300 1,900 3,300 No FP, No S, Yes O
<br /> M W 3-36 06/29/94 9.58 37.83 -28.25 44,000 14,000 5,300 1,800 5,500 No FP, S=NE, O=NE
<br /> NlW-4
<br /> MW-4 01/20/93 12.34 44.35 -32.01 NS NS NS NS NS No FP, No S, Yes 0
<br /> h1W-4 01/26/93 12.34 43.99 -31.65 NS NS NS NS NS No FP, No S, Yes 0
<br /> MW-4(59) 03/10/93 12.34 42.42 -30.08 110,000 14,000 24,000 3,200 15,000 No FP, No S, Yes 0 i
<br /> MW-4(59) 06/10/93 12.34 40.68 -28.34 110,000 9,100 17,000 2,700 13,000 No FP, No S, Yes O
<br /> MW-4(59) 09/02/93 12.34 41.59 -29.25 110,000 12,000 21,000 2,700 13,000 No FP, No S, Yes O
<br /> MW-4(59) 10/28/93 12.34 41.78 -29.44 90,000 11,00 20,000 2,700 13,000 No FP, No S, Yes 0
<br /> NIW4-38 03/23/94 12.34 41.23 -28.89 38,000 7,600 12,000 2,000 10,000 No FP, No S, Yes 0
<br /> MW4-38 06/29/94 12.34 41.06 -28.72 43,000 2,400 2,900 1,000 5,800 No FP, S=NE, O=NE
<br /> SA r'1pj0,080508051110.1e1-94 pas:4
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