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08-Jul 00 <br /> a r <br /> EXPLANATION EAST FREMONT STREET <br /> Groundwater Monitoring Well <br /> S-1 ! <br /> Groundwater elevation contour in — — — — — _ --2385- - _ , _ _ _ _ _ -7 <br /> feet referenced to mean sea level (2,070) <br /> <1000 ----------- <br /> approximate <br /> --------; { <br /> / (MSL) Arrows indicate r , <br /> approximate groundwater flow + gA <br /> direction <br /> -2385 Groundwater elevation in leet I } <br /> (2,670) Benzene concentration in ppb <br /> I I <br /> I <br /> (<1000) MTBE concentration to ppb Existing I <br /> (by EPA Method 8020) �� <br /> �.\ USTs I <br /> <x=Not Detected at detection limit of x < J! ❑ <br /> � I <br /> Approx hydraulic gradient=0 001 to 0 002 ,' Former USTs;�`� — - Canopy <br /> I <br /> +-2373 1 <br /> .� (<0 500) <br /> Waste Oil Tank Q ( 50) <br /> W <br /> W <br /> ' I 1 <br /> S-3 �— —-23 76 <br /> -23 75 �. — --— -� ❑ ❑ �, <br /> (<0 500) Station Building and, , <br /> � F <br /> (<2 50) Lube Bays 4------ -------------------- ---- 0.i <br /> Pq <br /> Dispenser Island I w <br /> _-2380 (typ) <br /> �C1nder Block w.11 I <br /> N� <br /> I <br /> S-2 I <br /> 23 83 <br /> (<0 500) I <br /> (<2 50) <br /> Scale ANCON STREET, I i <br /> FIGURE <br /> � 0 15 30 60 <br /> 1 Inch=30 Feet <br /> 20 <br /> Shell-branded Service Station Groundwater Contour/ <br /> 2494 East Fremont Street <br /> Stockton, California (91 Chemical Concentration Map <br /> Incident No 98996181 C A M B R I A <br /> May 3, 2000 <br />