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41 <br /> = ENVIRONAtNTAL <br /> ANALYTICAL CHEMISTS <br /> February 18, 1997 <br /> Ron Rowe <br /> San Joaquin County Public Health Services <br /> Environmental Health Department <br /> P.O. Box 388 <br /> Stockton, CA 95201-388 <br /> Subject: Jerrol Largin, Lab#631549 <br /> Dear Mr. Rowe: <br /> Please find enclosed amended sample results and supporting QA/QC data for the above <br /> mentioned project,together with a Corrective Action Report(CAR). <br /> Upon investigation of the situation and review by our Vice President, Kelly Dunnahoo, it was <br /> determined that errors were made,primarily in the reporting of the data. <br /> The following results have been modified: <br /> Ethylbenzene: The new result was taken from a more appropriate dilution. <br /> Toluene: The result was corrected for this analyte. <br /> Xylene: The original result reported was out of the calibration range. Please note that <br /> programming changes to our LIMS are being implemented that will preclude this <br /> error occurring in the future. <br /> TPH-Gas: The detection limit for the method blank was corrected. <br /> While we feel that the corrective action listed on the attached CAR is appropriate, we have taken <br /> additional steps to insure the quality of our data. Calibration ranges are being widened. The <br /> amount of soil used for analysis has been reduced so that dilutions will not be needed as often. <br /> Programming changes currently being introduced to our LIMS will add extra review utilities in <br /> the data processing function. In addition,we are putting in place a more rigorous training <br /> program to further reduce the likelihood of errors such as this occurring in the future. <br /> I apologize for the delay in responding to your request for information regarding these analyses. <br /> Upon review of this situation, it has become a top priority of the management of FGL <br /> Environmental to review processes in the laboratory to assure the quality of the data generated. <br /> Corporate Offices 6 Laboratory Office&Laboratory Field Office <br /> PO Box 272/853 Corporation Street 2500 Stagecoach Road Visalia,CA <br /> Santa Paula,CA 93061-0272 Stockton,CA 95215 TEL: 209/734-9473 <br /> TEL: 805/659-0910 TEL: 209/942-0181 FAX: 209/734-8435 <br /> FAX: 805/525-4172 FAX: 209/942-0423 Mobile:209/7S7-2M <br />