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rwar,ne c s�mcoxxtw s R <br /> 16 ROY F. WESTON, INC. <br /> STOCKTON ANALYTICAL LABORATORY <br />' ANALYTICAL CASE NARRATIVE <br /> Client: SAN JOAQUIN MOSQUITO <br />' RFW# 9407S668 <br /> Test: Aromatic Volatile Organics <br /> 1. This narrative covers the analysis of ten (10) soil samples in accordance with <br />' protocols based on SW-846, method 8020. <br /> 2. All required holding tunes for this analysis were met, with the exception of the re- <br /> extraction and reanalysis of all samples, which was required because the method <br /> blank contained target compounds in the anginal analysis. <br />' 3. Calibration criteria is required to be met on at least one column for each target <br /> compound, and on both columns for any compound reported positive. All nutial and <br /> continuing standard calibrations associated with this data set were within acceptance <br /> criteria. <br /> 4 Method Blank 94SVI075-MB1 contained target compounds with the following <br />' concentrations. <br /> COMPOUND QONCENTRATION <br /> Benzene .0017 mg/Kg (J) <br />' Ethylbenzene 0023 " <br /> Toluene .0024 " <br /> Xylene (total) .0060 " <br /> I <br /> Method Blank 94SVI077-MB1 did not contain target compounds at or above the <br />' reporting limit. <br />