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GRADE <br /> ASPHALT/CONCRETE 4 <br /> /Z <br /> 3/4 INCH <br /> .NATIVE-/ PEA GRAVEL <br /> /Z SOIL <br /> 'NATIVE <br /> I�\ <br /> VAPOR- <br /> EXTRACTION <br /> PIPING <br /> Min. 2" <br /> BEDDING <br /> TIVNSOILE <br /> 18" <br /> NOT TO SCALE <br /> CROSS-SECTION OF A VAPOR- PLATE <br /> �—/_ Ak/� EXTRACTION SYSTEM TRENCH <br /> t—//NA ARCO Service Station No. 6100 3 <br /> 25775 South Patterson Pass <br /> F1 E N0' Tracy, California <br /> PROJECT NO. 30041 ooa1C3A <br />