ARCHIVED REPORTS_XR0012603 - Laserfiche WebLink

Home Browse Search

r ¢� a �, . 5. ' upM-1- Method blanks and standards are completed for every analytical batch. Method blanks are matrix matched to samples; daily standards are run as described above. ' One duplicate and one spike are run every 10 samples, or each analytical batch if there are under J.R. • Acceptance limits for compounds must not exceed those prescribed by regulations. if acceptance limits are exceeded, corrective action is immediately taken. Samples run prior to corrective action are reanalyzed. Quality Control Samples _• We participate in the EPA referencesample program for - a variety 6f" organic and inorgan _ic analyses. Reference materials are tested, and results of these studies are discussed with the analysts involved and kept on file. s Clients are encouraged to submit QC samples to us. On request, we will split samples and subcontract to another laboratory as a confirmation check. ' We participate in the QC program of the Laboratory Committee of the California Water Pollution Control Association Bay Section. For clients with NDPES permits, we also participate in the annual EPA DMR reference sample program. , Review and Reporting of Analytical Results " We use a two-level review process which includes the r client's own Project Manager as well as the Laboratory Director. The review process involves comparing related . analytical results on the same sample for coherence and mass or cation/anion balance. it also involves - -- comparison with previous results :or the same source to observe possible deviations from established trends. Final review may involve further consultation with clients. O Typed and signed final reports are kept on file for at least ten years, along with laboratory worksheets, instrument printouts, and chain of custody forms.