| The Branch of Quality Systems (BQS) operates an Organic Blind Sample Project (OBSP).
One of the goals of the project is to document bias and variability for the National
Water Quality Laboratory (NWQL) through the use of blind quality assurance (QA) samples. From these summaries, districts can be informed of the NWQL's performance on QA
samples that parallel their own environmental samples. |
Cumulative Method Reports
The cumulative method reports are primarily intended for the data users to aid in their interpretation of
environmental data over time. All analytes listed in the cumulative method reports will have associated time series charts.
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(NOTE: The OBSP Summary Reports are created using Microsoft Word or Excel. It is advisable to
use this or similar software when printing these reports.)
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