NC003719_DMR Reporting_20090527

Lopez, Dale
From: Lopez, Dale
Sent: Wednesday, May 27, 2009 10:49 AM
To: Henson, Belinda; Brantley, Mark
Cc: Lopez, Dale '
Subject: DAK
Donald Allbright phoned me this morning about an unusual problem that he has. He is presently preparing his DMR (I
assumed that it is his May DMR). His original question was: "how will he report a falsely high COD result and a falsely
low BOD result on the 002 DMR". He unfortunately followed the suggestion of his chemical salesman by adding
hydrogen peroxide upstream of the composite sampler location. Now, he has a new set of problems because the H2O2
addition made the tests results questionable. He is unable to get an accurate numbers for either the COD or the BOD
(the FDO is higher than the IDO). In addition, the sample (in my opinion) does not truely represent DAK's discharge
(this may be viewed as a violation of an NPDES permit condition). Donald said that DAK only used the H202 for two and
a. half days, and then it appeared that the biomass had recovered enough to stop using the peroxide (Note: after the
addition of a blend of bioaugmentation seed and reseeding from another WWTP). The H2O2 was injected at the
clarifiers, approximately 75 feet upstream of the composite sampler. He would like a phonecall when you can.
Thanks,
Dale