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' Page b . .ULD ANALYTICAL SERVICES <br /> 4585 PACHECO BOULEVARD <br /> Chem PAC BELL. STOCKTON MARTINEZ, CA <br /> Project* 190916 <br />' uahty Control Results <br />' Matrix Spike/Matnx Spike Duplicate Recovery Summary <br /> MS MSD Relative <br />' Compound Amount Spiked % Recovery % Recovery % Difference <br /> Benzene 50 ug/L 955 96.2 0.7 <br /> Toluene 50 ug/L 93.5 984 5.1 <br /> Gasoline 1 mg/L 114 102 6 <br /> MS = Mat= Spike <br /> MSD = Mawx Spike Duplicate <br /> 1 <br />' 6132A 1 92 <br />