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• • <br /> U-9 EXPLANATION <br /> —1442 <br /> --- --- <br /> * Groundwater monitoring well <br /> ..,... ...... ...... ...... <br /> Approximate Properly Boundary —14 23 <br /> , , e Vapor Extraction Well <br /> —1387 4 <br /> u-s *U- <br /> ♦ / Former ! <br /> Waste Oil � �,, Nested piezometer wells <br /> Former Tank Former 11.11111 W <br /> Station � Dispenser 9999 Groundwater elevation in feet <br /> Building I /I U-1 Island � ' referenced to Mean Sea Level <br /> r� � ��'-14 27 ' � e h41 HP-2 (MSL) <br /> 1:114 28 (MSL} <br /> Former Unrground ,�h -64 488 g9� Groundwater elevation contour, <br /> Former Il Storage T k Site i -116 --15 49 gg <br /> Waste Oil 1 —143$ 0 � dashed where inferred <br /> Tank <br /> —13 68 U-4l ` Former , t/ U-g [99 991 Not used in contouring <br /> I } t Dispenser V <br /> l Forme { Islands ,UV-1 + -1460 X 14 60 <br /> —14 24 NP-1-22 1-14 29 <br /> Undergr nd U-2* F I -65 -1466 <br /> Storage Tanks -14 14 J - -111 -1523 <br /> 1 <br /> EAST MINER AVENUE <br /> Approximate groundwater ! <br /> flow direction at a <br /> 1 gradient of 0 063 to o Oflfi Ft/Ft 0 44 <br /> Scale in Feet <br /> *U-7 <br /> 1435 ; l— source rddad ika.ined <br /> MoFran q IRMO <br /> Parking UPW <br /> POTENTIOMETRIC MAP FIGURE <br /> Gettler - Ryan Inc. Former Unocal Service Station No 0187 <br /> 6747 Sierra ct, Suite J (925) 551-7555 437 East Miner Avenue 1 <br /> DubK CG 94565 Stockton, California <br /> JOB NUMBER REVIEWED BY DATE REVISED <br /> 280045 Au ust 20 1999 <br />