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i <br /> -7 ® i EXPLANATION- <br /> (<1) (21) <br /> 1 ! in B-5� i Soil Boring/Monitoring Well <br /> Parking Area B_1g <br /> i <br /> (3 6) B-13 <br /> Soil Boring/Vapor Well <br /> B-4 �� > >, <br /> 1 (<2) ��•� B-2 i aa) B�9 Soil Boring <br /> s�®®®► � (200) �o <br /> vp"1oa�� � B-13 -* Pumping-Test Well <br /> #B-11 <br /> (4300)�,�� — r — `� Underground Storage Tanks <br /> e ®moi y! W L ---;J T1 12,000-Gallon Unleaded <br /> ® �� ®�® AI Gasoline <br /> I 4 �® ry® I z T2 12,000-Gallon Unleaded <br /> ® <br /> I W Gasoline <br /> i s <br /> Q r — Approximate Limits of <br /> Station <br /> Building B-6 d r r =-i— T-_ -� ® -- Tank Pit <br /> (2 1) 1 I I 1 �® B-5 <br /> (<2) — (4300) Concentration Of Total Petroleum <br /> Hydrocarbons As Gasoline (TPHg) <br /> 1 • I T2 1 1 To ! 1 <br /> \B-12 <br /> I 1 1 I �o� -� $(3 �) � I In Parts Per Million (ppm) <br /> >% < ] Line Of Equal Concentration Of <br /> 1 I I 1 I I ao�1� Total Petroleum Hydrocarbons <br /> 1 1 I I I > As (TPHg) In Parts Per Million <br /> 1 l l 1 I 1 1 0 (ppm) <br /> L - -J --_j J <br /> 8-10 B-9 <br /> *B-1 <br /> B-3 <br /> (<2) <br /> Driveway Sidewalk <br /> Sidewalk <br /> MARCH LANE <br /> Source: Map modified from site plan 20 0 20 40 <br /> provided by Unocal and Monitoring Approximate Scale (feet) <br /> wells surveyed by Tom 0 Morrow, inc <br /> CONCENTRATION OF TPHg IN SOIL (45-56 FEET) I PLATE <br /> • �`— r� Unocal Service Station No. 6981 <br /> 4707 Pacific Avenue 1`; <br /> PROJECT NO. 38032 8032J88 1 Stockton, California <br />