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EXPLANATION <br /> • MW-11 B-19/MW-13 <br />� Mw- z Sail Boring/Monitoring Well <br /> (<50) <br /> B-13/VW--4 <br /> Soil Boring/Vapor Well <br /> PTW-1 <br /> Pumping-Test Well <br /> � ® r Under round Storage Tanks <br /> z - —— - Ti 12,000-Gallon Unleaded <br /> e ¢ ® Gasoline <br />� m <br /> 0 T2 12,000-Gallon Unleaded <br /> UGasoline <br /> 6 MW-7 ~. ¢ <br /> ®B-7/ (55('� EL <br /> Parking Area O ( MW-6* 1Z <br /> t 65 a e Approximate Limits of <br /> B-4/MW-4 Be N i �-.— J Tank Pit <br /> 4 <br /> (Dry) PTW-1 ; <br /> 8-13 _ <br /> ®�®��W-2 -4 � A ® B (<5ojw-13 <br /> r <br /> VW-2 � � (550) TPHg Concentration In Ground-Water <br /> a o p <br /> station u L �� __ _ Q In Parts Per Billion (ppb) <br /> 177-:-1 r�.`...I B-s/M <br /> Buildin� B-6 l l ! (Dr ���� Line Of Equal Concentration <br /> vW-1 I � 5000 Of TPHg In Ground-Water <br /> r4co T21 I TY I _12/ A <br /> Vw--3 oB In Parts Per Billion (ppb) <br /> `B-1a/ ALJ L_J In oL� i <br /> W 8B-1/MW-1 B-01-- <br /> Third <br /> ®OSA <br /> B-15o <50) (Dry) (Dry) Not Used in Map Construction <br /> (<50) Sidewalk 0 Drhwway SldewalkMARCH LANE50 0 25 50 100 <br /> Source Map modified from site plan MW_9 (<50) <br /> provided by Unocal and Monitoring Approximate Scale (feet) <br /> welks surveyed by Tom O Morrow, lncTPHg CONCENTRATION IN GROUND WATER PLATE <br /> Quarter 1992 <br /> Unocal Service Station No. 6981 14 <br /> 4707 Paclflc Avenue <br /> FILE n, California <br /> PROJECT NO, 38032 8032J4A Stockto <br />