1992-04-01_REVISION - M1988112 - Laserfiche WebLink

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~ ~ j~~~ COFIE LABOF~ATORIES ' Western Atlas International ..a~o.r reo.. ::?za.s r,rl F ANALYTICAL CHEMISTRY DIVISION QUALITY ASSURANCE MANUAL ' SOP NG. REVISION NO. EFFECTIVE GATE PAGE HC-QAC-02 0 1/06/92 79 of 104 • Continuing calibration verification standards must be analyzed once per ' batch or at a frequency of 10% of the sample populaltion, whichever is greater. • A method blank and reference standard or stock standard (if available) must be analyzed with each sample batch. ' • Laboratory duplicates must be analyzed once per batch or at a frequency of 10% of the sam le ulation whichever is reater o p , . p p g • Matrix spikes (where applicable) must be analyzed once per batch or at a ' frequency of 5% of the sample population, whichever ig greater. Hardcopy printouts of all instrument calibration data, qu$lity control check ' sample, and field sample analytical results must be kept on file or included in the appropriate job files. 1 • Where applicable, correlation coefficient, slope, and Y-inteJrceptvalues must be recorded for all standard lines. ' 13.3 Organic Requirements ' The following guidelines are minimum requirements which Should be met for organic analyses. The majority of these guidelines are tak$n from EPA SW- i 846 methodology and/or the EPA Contract Laboratory Progdam Statement of ' Work. Specific requirements for each analytical method should be followed as indicated in the applicable method. ' For certain organic parameters, the small sample volume which is provided by the client prevents determining all OC criteria on that sample. In these cases, ~ spreading the OC determinations among several jobs or samples is ~, recommended. It is not necessary to run all of the OC determinations on the same sample or job unless it is requested by the client. ' Method Blanks ~ Method blanks should be analyzed once per batch of samples for each 12 ' hour analysis period for volatiles and once each day per extraction technique