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r �� e>�arr w� r� r �f r>■r err �� �r �s �r �� w■ ■rte wig �� �� <br /> Ta A-1 <br /> Comparison of July 2004 through April 2005 Groundwater Monitoring Data to Groundwater-to-Indoor Air Screening Levels <br /> Former Unocal Station No 5098 <br /> 5400 and 5606 Pacific Avenue <br /> Stockton,California <br /> Sample ID Unit I DTW _!PHg BENZENE n-BUTYL sec-13131 112-DCA EB IPB MTBENAPHT N-PB TOLUENE 1,2,4-TMB 1,3,5-TMB XYLENES <br /> u L u L Cu (U-91L) u L (U91L) a L u L u L (U91L) (U91L) (UWL) u L (ELL) <br /> Indoor Air ScreeningLevel(u 5860 1950 2000 3 940 111 161 000 522 13 000 205 20 900 49 100 1 510 1 580 16,200 <br /> MW-12 <br /> 07/12/04 B 3635T( 17 24 084 11 15 31 NO NO <br /> 65 28 NO 24 39 <br /> 10/18/04 B 38 05 NO ND ND NO 59 NO NO NO —ND —N D NO NO NO NO <br /> 01/10/05 B 3652 NO ND NO NO NO NO NO ND NO ND NO I ND NO ND <br /> 04/11/05 B 3537 NO ND NO NO ND ND NO NO NO NO NO NO NO NO <br /> MW-13 <br /> 07/12/04 B 36 60 NO 1 3 —N D NO NO 21 NO NO NO NO 054 17 ND 89 <br /> 10/18/04 B 3843 NO NO NO NO NO NO NO NO NO NO NO NO NO 42 <br /> 01/10/05 B 3681 NO NO NO ND NO ND NO NO NO ND NO NO ND NO <br /> 04/11/05 B 35 55 NO ND NO ND NO NO NQ NO NO NO NO NO NO NO <br /> I <br /> MW-14 <br /> 07/12/04 B 36 98 A, 6 NO NO NO 5 5 NO N—D--T 2 5 NO 19 33 NO NND <br /> 10/78/04 B 3878 ND ND NO NO NO NO ND NO ND ND ND NO NO NO <br /> 01/10/05 B 3723 NO NO NO NO NO NO ND NO NO NO ND ND —N D <br /> 04/11/05 B 35 85 NO NO NO NO NO NO NO NO NO NO ND NO NO <br /> MW44A <br /> 07/12/04 A --3650 NO ND ND ND —ND ND ND ND NO NO NO NO NO NO <br /> 10118104 A 3851 NO ND ND ND ND ND NO ND ND ND NO NO NO NO <br /> 01110105 A 37 05 ND NO NO NO NO ND ND Nb ND NO NO NO NO NO <br /> 04/11/05 1 A 3568 NO NO NO NO ND NO —N D ND ND NO NO ND ND ND <br /> 4 <br /> MW-13 <br /> 07192104 B 35 48 ND 0 79 ND ND NO 22 NO ND 09 NO NO 17 NO 56 <br /> i0118/04 B 37 30 NO 14 NO ND NO NO NO NO NO NO NO NO NO 42 <br /> 61110/05 B 3582 NO 18 NO NO ND ND NO NO NO ND ND ND NO NO <br /> 04/11/05 B 3450 NO NO NO NO NO NO NO NO ND NO ND NO NO ND <br /> MW-96 <br /> 07/12/04 B '3655 _ _ ND ND NO 2 2 NO NO 0 55 0 66 1 2 11 NO 66 <br /> 10/18/04 B 38 47 NO 3 3 ND ND NO NQ ND NO NO NO NO I NO ND NO <br /> 01/10/05 B 3695 1500 160 4 2 1 5 1 2 110 11 ND 36 26 29 160 34 180 <br /> 04/11/05 B 36 00 2 8 1 6 ND 37 61 ND 91 6 9 2 8 27 072 24 <br /> 06940-293 3 of 7 ENSR Corporabon <br />