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f <br /> i <br /> f <br /> EXPLANATION <br /> i <br /> Mw-11 8-19/M W—t13 <br /> g-17 <br /> (<D5) MW—12 ls i Soil Boring/Monitoring Well <br /> (<0 5) <br /> Uj B-1 3/VW-24 <br /> 5011 Boring/Vapor Well <br /> PTW- 1 <br /> Pumping-Test Well <br /> 4� a- i 1, Underground Storage Tanks <br /> i T1 12,000-Gallon Unleaded <br /> %W-7I GaS011ne <br /> + T2 12,000-Gallon Unleaded <br /> Gasoline <br /> e-7/ ~1 t __ <br /> Parking Area MW-6 f ` <br /> (z e) ��° 8-18/ 1j Approximate Limits of <br /> � P,W---f <br /> B-4/MW-4 �, A, j i - — -,l Tank Pit <br /> f (ury)Ie�f• B--z/)ew—z 1V14/ � <br /> �� (Ory) / 13-19/MW--13 <br /> 12 I (<O 5) <br /> • Stplion +( L j Benzene Concentration In <br /> Building B-6 ` �`-` 9 1 1 1 9-5/M 49-5 Ground—Water In parts <br /> vw-1 t 1 1 1 1 (Dry) � i Per Billion (ppb) <br /> 721 !T1 <br /> Ij~r��f ?/ �� Line Of Equal Concentration <br /> y 0_10/ L i !J b 64 Of Benzene In Ground-Water <br /> s Mw—s �o' ~'rf In Parts Per Billion (ppb) <br /> B-15/ �\ (19) B--1/mw-1 9-3/MW-3 / 1 <br /> MW—lo ` (Dry) (Ory) * <br /> (<O5) 1 Sidewalk w.Y Sld.walk �! 0 Not Used In Map Construction <br /> LANE <br /> N <br /> Source Map modified from site plan B-19/ (�5) 50 0 25 50 100 <br /> provided by Unocal and Monitoring ?!T M =!n i <br /> wells surveyed by Tom 0 Morrow, Inc Approximate Scale (feet) <br /> BENZENE CONCENTRATION IN GROUND WATER i <br /> Third Quarter 1992 PLATE <br /> Unocal Service Station No. 6981 <br /> ME NO 4707 Pacific Avenue 15 <br /> PROJECT NO. 38032 8032J5A Stockton, California <br />