1992-09-01_REVISION - M1988112 - Laserfiche WebLink

Home Browse Search

CORE LABORATORIES ~ f//l~ Western Alias International .....ow. co.e.. ' T 17 i F ANALYTICAL CHEMISTRY DIVISION QUALITY ASSURANCE MANUAL SOP ND. REVISION N0. EFFECTIVE DATE 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 population, whichever is greater. • A method blank and reference standard or stock standard jif availablel must be analyzed with each sample batch. • Laboratory duplicates must be analyzed once per batch or at a frequency of 10% of the sample population, whichever is greater. ' • Matrix spikes (where applicable) must be analyzed once {per batch or at a frequency of 5% of the sample population, whichever is greater. • Hardcopy printouts of all instrument calibration data, quafiRy 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-intercept values must be recorded for all standard lines. ' 13.3 Organic Requirements 1 The following guidelines are minimum requirements which should be met for organic analyses. The majority of these guidelines are taken from EPA SW- ' 846 methodology and/or the EPA Contract Laboratory Program 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 QC 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