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Table 1 ` Groundwater Monitoring Data and Analytical Results Former Tosco(Unocal)Service Station#6981 ' 4707 Pacific Avenue I 1 Stockton,California 1 WELL IDI DATE DTW Si GWE TPH-G B T E X MTBE 01 d s) TIO b) dl �) WIN (ppb) (ppb) I Rf I -1697 490" 62 20 5 2 241 i1 170/1406 MW-2 01127-28100 2853 51 0-55 0 -14 2$ 489" 380 300 <0 500 5 321 ji 107/8796 (cont) 06126-27100 25 84 <204 x 3701 °� 120/1006 12 13 09/22-23100 2901 -1688 8,00016 <20 <20 12126-27100 2890 -1677 5,27016 476 107 <100 21 7, �� <loa/78 56 f r 03107-08101 2859 -1646 86113 428 259 <2 50 170 �I 67 f147 26 o 6 06/26-27101 2965 -1752 40013 27 21 1 1 53147 112-13101 31 53 -19 40 360" 25 16 <0 50 8 4 1 511626 09 kk � 12112-13/01 3178 -19 65 70033 77 <2 0 Q�0 23 I 1t 751946 i 03120-21102 3055 -1842 65013 120 21 <2 0 171 100178 6 06/06-0710217 31 02 -1889 390 53 1 1 <0 50 3 6 -4586 09/30/0215 3354 -2141 10,000 900 57 490 1,800 60 12/30-31/02" 3305 -2092 4,100 460 <2 5 35 2501 IF 49 03129-3010315 3199 -1986 960 43 087 57, 24i 31 r5 <0 50 <0 50 3 11 1 19 06!25-26103 32 47 -20 34 410 10 09124-25/0318 3478 -2265 2,100 81 <2 5 70 971 10 _ � 1 � IIi li I 1i I I ' MW 3 02/21/90 -- 520-550 -- 3,400 <0 5 <0 5 <0 5 0 95 � 'I 10/18/90 DRY -- 11/19/90 DRY -- 12/27/90 DRY -- -- -` -- -- 01/28/91 DRY -- — -' -- 04/02/91 DRY -- -- -- -- "" "- 07/18/91 DRY 09/30/91 DRY -- -- -- -- -- --i �r - 11/14/91 DRY -- -- -- — 04/16/92 DRY -- -- -- `- 07/30/92 DRY -- -- -- -- -- -- "- 10/21-22192 DRY -- -- -- -- --'r "- 01/13/93 DRY -- — -- -- --1151 04/26/93 5053 -3902 1,900 27 <5 0 <5 0 <5 07/26/93 5151 4000 I,300 78 15 <5 0 14 10/20/93 5205 -4054 1,400' 44 <10 <10 <10 6981 xIsI138 • �� A*5103 4 i