Pall/DEQ Split Sample Results Jan 2013

[R M Rayle]

The January 2013 dioxane sampling data includes the results of 8 split samples in which the same samples were analyzed both by the DEQ and by Pall. 

The Pall results were consistently lower, about 3/4 of those of the DEQ.

The new Pall database apparently dropped the "lab" field from all prior databases that showed which lab analyzed each sample.  We had to get that information from another source to correctly compare these split samples.

[R M Rayle]

Of the 40 dioxane samples collected by Pall in Dec 2012, 18 failed to be analyzed within the required 14-day holding period, marking the fifth month in a row that significant portions of their samples had that problem.