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�b <br />' ROY F. WESTON, INC. <br /> STOCKTON LABORATORY <br /> METALS CASE NARRATIVE <br />' Client: Areg Major Mart W.O.#: 03988-016-003-0004 <br /> RFW#: 9308S584 Date Recd: 08/10/93 <br />' 1 This narrative covers the analysis of three water samples for Lead <br />' 2 The samples were prepared and analyzed in accordance with EPA method 239.2 � <br /> 3 All analyses were performed within the required holding times <br /> I4 All Initial and Continuing Calibration Verifications(ICV/CCV's)were within control <br /> limits <br /> 5 All Initial and Continuing Calibration Blanks (ICB/GCB's)were within control limits <br /> 6 All Preparation/Method Blanks were below Reporting Limits <br /> 7 All Laboratory Control Samples (LCS) were within the 80-120% control limits <br /> (exceptions allowed for Ag and Sb). <br /> 8 All Matrix Spike recoveries were within the 75-125% control limits (exception <br />' allowed when sample concentration exceeds the spike added concentration by a <br /> factor of 4 or more) <br />' 9 All Duplicate analyses were within the 20% Relative Percent Difference (RPD) <br /> control limits for sample values greater than 5X Reporting Limit, or +/- the <br /> Reporting Limits for sample values less than 5X Reporting Limit. <br />' 10 Method of Standard Additions (MSA) analyses were not required <br /> I <br /> y r <br /> T L Hammonds Dat <br /> Inorganic Section Manager <br />