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FIGURE 4 <br /> MW-1 TPHg, Benzene & MTBE Concentrations & Groundwater Elevations vs Time <br /> Chevron Service Station 9-9840 <br /> 4344 Waterfoo Road <br /> Stockton, California <br /> 100000 -1500 <br /> Note Non-detect(ND)graphed at one-half detection limits per US-EPA <br /> protocols Refer to Tables 9 and 2 for source data <br /> -2a o0 <br /> 10000 <br /> i -25 00 <br /> o r' $ <br /> v <br /> 1000 c <br /> -30 00 <br /> CD <br /> o <br /> 0 W <br /> L <br /> a 10 0 <br /> -3500 4) <br /> -O 3L <br /> v = <br /> O <br /> 10 -4000 (7 <br /> 10 <br /> -45 00 <br /> 0 1 -50 00 <br /> O O O s O O O O O O j O O O s O O O -� O O O O O O O <br /> N W O Cfl N W O CO N N M r4 O — 4�6 -4 O 4h� V O — v O A V O — <br /> N O O O <br /> O W W N W W V W M 4�6 4a. N O O N O Cfl C37 W A M –4 <br /> O O Q O O 0 0 O C) Q Q Q O Q O O O Q Q O O O <br /> 00 cfl Cp CD cD O O O O s — N N N N W W W W 1A 4& 4 4 cri (A (n 01 O <br /> Date Sampled/Measured <br /> - MTBE TPH-G --*—Benzene *GWE —Screen Interval <br /> P 1ClientslChevronTexacolChevron Management Transferl9-98401GWMITableslHydrographs 9-9840 <br />