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MINE==, MAWYMMM. <br /> F a <br /> A chair-oC custody form was used to recrJrd possession of the sample from time of collection to its arrival <br /> at the laboratory. When the samples are shipped,the person in custody Of them rcfinquished the samples <br /> by signing the chain-of-custody form and noting the time of shipment. The sample-control officer at the <br /> laboratory ve.afy =ample integrity and confirms that it was collected in the proper container, preserved <br /> correctly, and that there is an adequate volume for analysis. <br /> F <br /> The sample was assigned a unique log number for identification throughout analyse and reporting. T'ne <br /> log number was recorded on the chain-of-custody form and in the legally-required log book maintained <br /> ~ by the laboratory. The sample description,date received,client's name,and any other relevant information <br /> was recorded. <br /> 3.3 A13aJytL%LQuqg& �anee <br /> �-- In addition to routine calibration of the analytical instruments with standards and blanks, the analyst is <br /> r ,4 required to run duplicates and spikes on 10 percent of the analyses to insure an added measure of <br /> 4 <br /> precision and accuracy. Accuracy also verified through the following. <br /> 9 <br /> z 1. U.S. Enviu-onn.ental Protection Agency (ETA) and State certification programs, j <br /> •� 2• Participation in an inter-laboratory or"ra aad•ro[n'quality as4urancem <br /> t p gram, <br /> 3. V—Mcation of results with an alternative method. For em:nple,calcium may be deter- <br /> mined by atomic absorption,ion chromatography,or titrimetric methods. Volatile organics <br /> may be determined through either purge and trap or liquid-liquia extraction methods. <br /> r <br /> 3A Nil4oellaneous QPds of Acura <br /> cy <br /> Where trace analysis is involved,purity of the solvents,reagents,and gases employed is of <br /> great concern <br /> Tae laboratory maintains a service contract oa all major instrumentation; Bass chromatographs,.atomic <br /> absorption, ran chromatography, and total organic carbon analyzers are all serviced and main hied <br /> t t regularly. <br /> The above program is more than sufficient for most needs. Additional quality assurance,such as spikes <br /> f and duplicates on all crialyses,will be provided if requested <br /> C <br /> t f <br /> t <br /> r <br /> a <br /> a <br />