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1 <br />' ROY F WESTON, INC. <br /> STOCKTON ANALYTICAL LABORATORY <br /> ANALYTICAL CASE NARRATIVE <br /> 1 <br />' Client: SAN JOAQUIN COUNTY MVCD <br /> RFW#• 9408S811 <br /> Test- Aromatic Volatile Organics <br />' 1. This narrative covers the analysis of four 4 water samples in accordance with <br /> Y � ) P <br /> protocols based on SW-846, method 8020. <br />' 2 All required holding times for this analysis were met. <br />' 3 Calibration critena 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 initial and <br /> continuing standard calibrations associated with this data set were within acceptance <br /> criteria. <br />' 4 The method blank associated with this data set did not contain any target compounds <br /> at or above the reporting Imuts. <br /> 5 Surrogate recoveries were within acceptance criteria. <br /> 6. Blank spike recoveries were within acceptance criteria. <br /> 7 Matrix spikes were not performed on any of the samples in this data set. <br />' 8 Confirmation by second column analysis was not required because no target <br /> compounds were detected in the samples. <br />' Walter McCurdy/Unit ader Date <br />