NC0005126_correspondence_20001120

ATA
NCDENI
JAMES B. HUNT JR.
GOVERNOR
BILL HOLMAN
SECRETARY
KERR T. STEVENS
DIRECTOR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
November 20, 2000
478
Mr. Chy Billings, II
Tyson Foods Corporate Lab Service -Wilkesboro
P.O. Box 88
1600 River Road
Wilkesboro, NC 28697
SUBJECT: Tyson Harmony Plant Samples
Dear Mr. Billings:
DIVISION OF WATER QUALITY
__ NOV 2 7 2000
SLR - WATER DUALITY
POINT SOURCE BRANCH
We have subsequently learned that the Tyson Harmony Plant (permit #
NC0005126) in the Mooresville Region does use chlorination for their waste. It is therefore
necessary for you to continue checking the samples from this facility upon receipt, for the
presence of chlorine. It is our understanding that you rarely get a positive result for chlorine
when samples are tested, however if a positive result is obtained you must the treat sample
for chlorine.
Thank you for your cooperation in this matter. If you have further questions or
concerns about this matter, please contact us at 919-733-3908.
Sincerely,
James W. Meyer
Laboratory Section
Cc: Norman L. Good
Connie U. Brower
Tom Belnick DWQ/NPDES Section
Wes Bell DWQ/Water Quality Section Mooresville Region
LABORATORY SECTION
1623 MAIL SERVICE CENTER, RALEIGH, NORTH CAROLINA 27699-1623
LOCATION: 4405 REEDY CREEK ROAD, RALEIGH, NORTH CAROLINA 27607-6445
PHONE [phone] FAX [phone]
AN EQUAL OPPORTUNITY / AFFIRMATIVE ACTION EMPLOYER - SOq RECYCLED/10% POST -CONSUMER PAPER

BILL HOLMAN
SECRETARY
KERR t STEVENS
DIRECTOR
ge In / iL
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
November 16, 2000
478
Mr. Chy Billings, II
Tyson Foods Corporate Lab Service -Wilkesboro
P.O. Box 88
1600 River Road
Wilkesboro, NC 28697
SUBJECT: Tyson Harmony Plant Samples
Dear Mr. Billings:
This letter is to address your request to cease performing joxi IViopp auction
(0/R) test on BOD samples from the Tyson Harmony Plant permit NC11005T26 in the
Mooresville Region. Our understanding is that there is no chlorination of the waste from this
facility. It seems that you are obtaining false positive results on these samples due to an
interference that appears to be chlorine. This has caused you to use an unreasonable
amount of Sodium Sulfite reagent, which in itself causes an oxygen demand when, used in
excessive amounts. It has been determined that the waste has a very high Nitrate Nitrogen
content. This is known to be an interference in the BOD analysis, often causing unreliable or
falsely high results. Oxidation of reduced forms of nitrogen, mediated by microorganisms,
exerts nitrogenous demand.
After consulting with Mr. Tom Belnick of the NPDES Section of this Division and Mr.
Wes Bell of the Mooresville Regional Office, we are granting your request to cease
performing the O/R test on samples submitted from the Tyson Harmony Plant for BOD
analysis. You must continue to treat all other chlorinated samples for BOD analysis and
remove the chlorine as specified in the method. I have been asked to inform you that the
permit for this facility is to be reviewed, and if determined to be necessary, the permit may
be changed to require the use of the Carbonaceous BOD5 (CBOD5) method. We request
that you familiarize yourself and your staff with this procedure in anticipation of its use for
analysis of samples from the Tyson Harmony Plant. The procedure is explained in the
Standard Methods, 18th Edition - Method 5210. We will be glad to work with you and your
staff on any problems you may encounter.
hope that this satisfactorily addresses your stated concerns. If you have further
questions or concerns about this matter, please contact us at 919-733-3908.
Sincerely,
9a/m-e.4-}mir-
James W. Meyer
Laboratory Section
Cc: Norman L. Good
Connie U. Brower
Tom Belnick DWQ/NPDES Section
Wes Bell DWQ/Water Quality Section Mooresville Region
LABORATORY SECTION
1623 MAIL SERVICE CENTER, RALEIGH, NORTH CAROLINA 27699-1623
LOCATION: 4405 REEDY CREEK ROAD, RALEIGH, NORTH CAROLINA 27607-6445
PHONE [phone] FAX [phone]
AN EQUAL OPPORTUNITY / AFFIRMATIVE ACTION EMPLOYER - 50% RECYCLED/10% POST -CONSUMER PAPER
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