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Table HISTORICAL GROUNDWATER ANALYTICAL RESULTS AND MONITORING DATA FORMER CHEVRON SERVICE STATION NO 9-6465 5608 NORTH PERSHING AVENUE,STOCKTON,CA ELEVATION BBNZeNE TOLUENE BENZENE XYLENES TPH•G 1:2-OCA OT�11! SPT WTI✓ C3.O DATE b b (PPb) b b (feet) feet fest MW-10 741 03/19/90 04111190 ND NO NO N 05/09190 NO NO NO NO ND 3538 N -2797 10122190 1 'I NO 1 IND 3735 N -2994 01/19191 0 3 2 12 110 3750 N -3009 07121191 NE ND NO NE NO 3809 N -3068 10/17/91 NE ND NO NE NE 3822 N -3081 0//09102 Nt NO NO INCNt 3644 N -2903 03/19/92 NE NO NO NE NE 3584 N -2843 07101/92 NE Nc NE NE NE 3758 N -3017 09/16/92 NE NE NE NE NE 3886 N -3145 01105103 NC NE NE NE N 3721 N -2980 06/24/93 NC NE NE NE NE 3402 000 -2661 M02193 N1 NE NE NE NE 3514 000 -2773 12/30/93 NE 0 5 NC ND NE 3451 000 -2710 03125194 <0 0 7 <0 OT < 3335 000 •2594 MW-11 784 03/19/90 04/11/90 NO NO NO N - 05/09/90 NO NO ND ND NO 3658 N -2874 08117190 015 NE ND NO 8 - 10/22/90 - - - 01119191 1 4 2 17 440 38 92 N -3108 07/21/91 NO NC NO NO NE 3957 N -3173 10117191 No NC NO Nil NE 39 77 NA .3193 01/09192 NO NE ND NE NE 3785 N -3001 03113192 NE NE ND NE NE 3720 N -2936 07/01/92 NE NE ND NE NE 3912 N -3128 00/16M2 NE NE NO NE N1 4047 N -32 63 01/05/93 NI NE NO NE NE 3860 N -3076 06124193 Nf ND NO N M 3534 000 -2750 09/02/93 N ND ND NO NE 3660 000 -2876 12/30/93 N NO NO NO NE 3496 000 -27,12 03/25/94 06 1 1 <0 5 1 5 501 3359 000 -257 Page 5 of 5 t=xolanaiion All elevations are given as feet above mean sea level TPH-G=Total petroleum hydrocarbons-as-gasoline 1,2-DCA=1,2-Dochloroethane DTW=Depth to water SPT-Separate-phase hydrocarbon thickness WTE=Water table elevation TOG=Top of casing ppb=Parts per billion NA=Not available ND=Not detected at or above minimum quantitation limits =Not analyzed,not gauged =Toluene concentration of 0 7 ppb reported in travel blank Nate See laboratory reports for minimum quantitation limits GARTA91 WK1 MEW GROUNDWATER TECHNOLOGY,INC