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Page: 7 <br /> IT ANALYTICAL SERVICES <br /> COmpaay: IT Corporation, Martinez SAN JOSE, CA <br /> Date: 01/21/92 <br /> Client Work ID: 190916 Pac Bell Stockton work Order: T1-12-147 <br /> TEST NAME: Spike and Spike Duplicates <br /> SAMPLE ID: Quality Control <br /> SAMPLE DATE: not spec <br /> LAB SAMPLE ID: T112147-OSA <br /> EXTRACTION DATE: <br /> ANALYSIS DATE: 12/20/91 <br /> ANALYSIS METHOD: 8020 <br /> QUALITY CONTROL REPORT <br /> Matrix Spike (MS) and Matrix Spike Duplicate (MSD) Analyses <br /> RESULTS in Micrograms per Liter <br /> Sample Spike MS MSD MS MSD <br /> PARAMETER Amt Amt Result Result %Rec %Rec RPD <br /> Benzene NDc0.5 50.0 39.3 33.6 79. 67. 16. <br /> Toluene NDc0.5 50.0 39.6 33.9 79. 68. 15. <br /> Ethyl benzene NDc0.5 50.0 39.8 34.3 80. 69. 15. <br /> Xylenes NDt0.5 150. 127. 110. 85. 73. 15. <br /> MS MSD <br /> SURROGATES %Rec %Rec <br /> 1,3-Dichlorobenzene 102. 101. <br /> 6&2 i 89 <br />