WEF Discussion Forums
Laboratory Management and Technical Issues
BOD/CBOD Changes in 5210B 22d Edition(3)
I have not read the 22nd edition that closely. Having a requirement of a MS/MSD for BOD is not really going to tell you anything, based on the reasoning in the attached document.
I would just take the "wait and see" approach. Or the other thing would be to fortify the sample the same as the LCS/LCSD standard - always running an effluent with low concentrations.
I did check out the table in the 22nd edition and I noticed that by Method 5210B, there were not any "x" to indicate the LFB and LFMD was required for this method and in the footnote, it stated that QC requirement stated in method.
That was my interpretation, a regulator may have a completely different approach.
Sorry, yes LCS/LCSD is the same thing as a lab fortifified blank. The effluent comment was addressing the LFM approach, I was trying to state that you could run a GGA in an effluent sample, since it should have very low concentration of BOD.
I didn't get that far to the footnotes, but I will have to take a look.
On another note, I think the reason for this is based on the Federal Register's final ruling today established 12 essential QC items for every test method, even if the test method doesn't specify any QC.
This is a strange situation since EPA posted a statement that the 22nd edition of SM was merely an "editorial" update of the actual approved method. This would indicate that the BOD method is not.
From a legal standpoint the approved method is the one freferenced in the federal regulations and is the one approved byt the JTG in 2001. Any copy of that is relavent. Also note that EPA killed the 12 Elements as requirements for QC and relegated them to option number 3 in cases where a method lacks QC (Note that it is not when a method lacks adequate or sufficient QC, but totally lacks QC).