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DPREVIOUS ASSESSMENT GRAB GROUNDWATER ANALYTICAL DATA <br /> UST Site No 3 - Port of Stockton <br /> Stockton, California <br /> BTEX3 <br /> U <br /> =Samplember Date T1PHg2 B I T E X <br /> U B3-4 20 feet 12/20/01 < 504 <05 <0 5 <05 <0 5 <br /> B3-4 40 feet 12/20/01 < 50 <0 5 <0 5 <0 5 <0 5 <br /> B3-5 @ 20 feet 12/20/01 610,000 19,000 21,000 12,000 39,000 <br /> B3-5 @ 40 feet 12/20/01 220 10 21 26 84 <br /> B3-6 @ 20 feet 12/21/01 6,900 2,200 26 62 58 <br /> B3-6 @ 40 feet 12/21/01 <50 <0 5 <0 5 <0 5 <0 5 <br /> B3-7 @ 20 feet 12/21/01 <50 <0 5 <0 5 <0 5 <0 5 <br /> 133-7 @ 40 feet 12/21/01 <50 <0 5 <0 5 <0 5 <0 5 <br /> B3-8 @ 20 feet 02/27/02 <50 <0 5 <0 5 <0 5 <0 5 <br /> B3-9 @ 20 feet 02/27/02 <50 <0 5 <0 5 <0 5 <0 5 <br /> B3-9 @ 40 feet 02/27/02 < 50 <0 5 <0 5 <0 5 <0 5 <br /> B3-10 @ 20 feet 02/27/02 <50 <0 5 <0 5 <0 5 <0 5 <br /> 133-11 @ 20 feet 02/28/02 < 50 <0 5 <0 5 <0 5 <0 5 <br /> 133-11 @ 40 feet 02/28/02 < 50 <0 5 <0 5 <0 5 <0 5 <br /> EPB3-12 na,20 feet 02/28/02 < 50 <0 5 <0 5 <0 5 <0 5 <br /> B3-13 20 feet 02/28/02 <50 <0 5 <0 5 <0 5 <0 5 <br /> B3-13 @ 40 feet 02/28/02 < 50 <0 5 <05 <0 5 <0 5 <br /> B3-14 ;40 feet$ 01/28/03 <20 <O S <0 5 <0 5 <O S <br /> 1 Groundwater analytical data for soil borings from previous assessments <br /> GeomatrEx Consultants,Inc,2002,Results of Assessment and Recommendations for Well Placement,UST Site No 3 <br /> (Site Code 1282-124),prepared for the Port of Stockton <br /> GeomatrEx Consultants, Inc, 2002,Results of Assessment and Recommendations for Further Assessment Lateral and <br /> Vertical Extent of Petroleum Hydrocarbons in Soil and Groundwater,Site No 3 (Site Code 1282-124),prepared for <br /> a the Port of Stockton <br /> Geomatrix Consultants, Inc,2003, Results of Additional Assessment and Remediation Evaluation of Petroleum <br /> Hydrocarbons in Groundwater, UST Site No 3 (Site Code 1282-124),prepared for the Port of Stockton <br /> 2 TPHg=total petroleum hydrocarbons quantified as gasoline analyzed using U S Environmental Protection Agency <br /> (EPA)methods 8015M or 8260B Results reported in micrograms per Mer(ug/L) <br /> 3 B=benzene,T=toluene,E=ethylbenzene,X=total xylenes(sum of m,p-xylene and o-xylene), <br /> using EPA methods 8020 or 8260B Results reported in gg/L <br /> j4 <=Analyte not detected at concentration greater than the reporting limit shown <br /> 5 Sample 133-14 at 40 feet had a dnsopropyl ether detection of 0 88µg/L,with a practical quantitation limit of 0 5 µg/L <br /> LIQ <br />