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stn <br />++�.. Ens rvraec wnn wn ; <br />ROY F. WESTON, INC. <br />STOCKTON ANALYTICAL LABORATORY <br />ANALYTICAL CASE NARRATIVE <br />Client: AREG-MAJOR MART <br />RFW# 93035279 <br />Test SW8020-PURGEABLE AROMATICS <br />1 This narrative covers the analysis of fourteen (14) soil samples in accordance with <br />protocols based on SW -846, method 8020. <br />2 The analytical holding time for this analysis was met <br />3 The standards were analyzed in dual dissimilar columns simultaneously Calibration <br />cntena were met for all analytes, with the exceptions of the end of the run standard <br />for sample UT 1W which had Ethylbenzene (-16%) and Toluene (-17%) <br />4 The method blanks associated with these samples did not contain any target analytes <br />at, or above, the reporting limits <br />5 Surrogate recoveries were within Laboratory QC limits with the exceptions of P-BE6 <br />(51%), PS25CON (47%) and PS3000N (46%) which was due to column type and <br />matrix interferences <br />---------------- <br />6 Blank spike recoveries were within Laboratory QC limits <br />7 The matrix spike and matrix spike duplicate were within Laboratory QC limits The <br />RPD's for the matrix spikes were within Laboratory QC limits. <br />8 Retention times were within QC tolerance limits. <br />a�'�- '�'& 3 -CZ� <br />Unit Leader Date <br />