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i <br /> R <br /> YivuoEH! eESn,Eo9.M utilN 9 <br /> ROY F. WESTON, INC. <br /> STOCKTON ANALYTICAL LABORATORY <br /> ANALYTICAL CASE NARRATIVE <br /> Client SAN JOAQUIN COUNTY <br /> RFW # 9306SO33 <br /> IFUMIGANTS <br /> 1 This narrative covers the analysis of 5 samples in accordance with protocols based <br /> on EPA Method 504. <br /> I2 The holding tunes for this analysis were met. <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. Initial and <br /> continuing calibration criteria were met for this analysis. <br /> 4 The method blank associated with these samples did not contain any target <br /> compounds at or above the reporting limits <br />' 5. Surrogate recoveries were within advisory limits. <br /> 6 The recoveries for the blank spike were within advisory limnts. <br /> 7 The recovery for the matrix spike was not within advisory limas (35%). <br />' 8 Confirmation by second column analysis was not required because no target <br /> compounds were detected in the samples. Sample MW4 was analyzed in <br /> duplicate, but a RPD could not be calculated because no target compounds <br />' were detected in this sample. A diluted analysis of sample MW-8 was <br /> required because of the presence of background matrix peaks. <br /> Dale E. Gimble/Unit Leader Date <br />