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FIGURE 7 <br /> MW-4 TPHg, Benzene & MTBE Concentrations & Groundwater Elevations vs Time <br /> Chevron Service Station 9-9840 <br /> 4344 Waterloo Road <br /> Stockton, California <br /> 100000 -20 <br /> Note Non-detect(ND)graphed at one-half detection limits per US-EPA <br /> protocols Refer to Tables 1 and 2 for source data <br /> i <br /> -25 <br /> 10000 - <br /> -30 <br /> 0000 -30 <br /> 0 <br /> 1000 <br /> 0 <br /> cc <br /> m > <br /> -35 <br /> o �7w <br /> V L <br /> m <br /> 0 10 0 a <br /> � 3 <br /> V <br /> c -40 a <br /> -a o <br /> = C7 <br /> 10 - <br /> -45 <br /> 01 -50 <br /> O Q O 3 0 O O O fl O s Q Q Q j O O O -y O O O s O O O Q <br /> N W W Cp N W Q CD N N CT �I O s M V O s A Q 41 -4 O -� A v Q <br /> N N O O N N -1 N N O O OO O <br /> W Co s O W CD N O 4�6 W -4W 0 A O N A O Q N M 0 M A W A Ul :Z4CD (D CID (d O O O O O O O O C7 O O Q Q Q Q O Q O O O O O O O C7 <br /> DD Lt7 M CO 0 O Q O O . . . . N N N N W W W W 4 4 4s. 4h. 0 0 0 0 Q <br /> Date Measured/Sampled <br /> �—MTBE —X—TPH-G —*—Benzene -+GWE Screen interval <br /> P 1Chents\ChevronTexaco\Chevron Management Transferl9-98401GWMITablesUiydrographs 9-9840 <br />