Laserfiche WebLink
P IN <br /> �ij mg rp ' <br /> x _ <br /> �e <br /> d, <br /> j <br /> dMM <br /> t � <br /> i ;e_') A chain-of-custody form will be used to record possession of the sample from time of collection to its <br /> j <br /> arrival at the laboratory, When the samples are shipped,piled, the person in custody of them will relinquish <br /> the sample signing the chain-of-custody form and noting the time of shipment. The sample control <br /> " 1 <br /> i <br /> ofii"er will verify sample integrity and confirm that it was collected in the proper container,preserved <br /> i correctly,and that there is an adequate volume for analysis, <br /> — If these conditions are met,the sample will be assigned a unique log number for identification throughout <br /> atlalysis and reporting. The log number will be recorded on the chain-of-custody form and in the Ie;a1Iy- <br /> required log book maintained by the laboratory. The sample description,date received,client's name,and <br /> any other relevant information will also be recorded. <br /> 2.3,final teal call Assurance <br /> P In addition to routine calibration of the analytical instruments with standards and blanks, the analyst is <br /> required to rur. duplicates and spites on 10 percent of the analyses to insure an added rn:asure of <br /> Precision and accuracy. Accuracy is also veriied through the fallowing: <br /> t 1. U.S. Environmental Protection Agency(EPA)and State certification programs, <br /> Z. Participation in an inner-laboratory or 'round-robin"quality assurance program. <br /> ww <br /> 3. Verification of results with an alternative method. For example, calcium may be dete. ' <br /> e Y rimed <br /> by atomic absorption, ion chromatography, or titrimetric methods- Volatile organics may be Y <br /> determined through either purge and trap or liquid.liquid ex.raction methods. <br /> r 2.4 lsre3lartenus Checks mf Acc�ra„�c i <br /> Where trace analysis i3 involved,purity of the solvents,reagents,and gases employed&of great concern. <br /> i The laboratory maintains a service contract on all major instruments as chromatographs,graphs, atomic <br /> 'kms absorptiaa, ion chromatographya nd total organic carbon analyzers are all serviced and maintained <br /> regularly. <br /> x i <br /> hF _ThC.above. — <br /> program-is than sufficient farAdditional quality assurance,such as spikes - - <br /> - — - - <br /> and duplicates on all analyses,will be provided if requested. <br /> { � 3 <br /> y • <br /> 1 <br />