NC0003719_Monitoring Report_20040128

DAK Americas
FIBERS. MONOMERS & RESINS
January 28, 2004
Mr. Mark McIntire
Division of Water Quality
NPDES Permits Branch
NC DENR
1617 Mail Service Center
Raleigh, NC 27699-1617
Dear Mr. McIntire,
Re: Letter Sierra to Patel, 7/30/2003, NPDES Permit No. NC0003719
The referenced letter required the Monsanto Corporation to sample their discharge for 1,4
dioxane a minimum of 10 times and submit to the division along with the applicable
QA/QC data. Attached is a table of the sample results and copies of the 10 QA/QC
packets. The 10 original QA/QC packets can be accessed at the site if needed.
If you have any questions or comments concerning this data, please feel free to contact
me on 910-371-5232.
Sincerely yours,
oef
Penny%M o ey
Oper ions Director - Qualiti y
DAK Americas
DAK Americas, LLC
3500 Daniels Road, N.E. • Leland, NC 2845
1-877-432-2766
www.dakamericas.com

1,4 DIOXANE DISCHARGE DATA
DATE
Discharge
Discharge
Discharge
ppm
MGD
Ibs
SAMPLEI
9/9/2003
3.4
0.350
9.9
SAMPLE2
9/17/2003
2.7
0.378
8.5
SAMPLE3
9/24/2003
2.1
0.406
7.1
SAMPLE4
10/1/2003
2
0.350
5.8
SAMPLE5
10/8/2003
4.1
0.272
9.3
SAMPLE6
10/15/2003
2.2
0.333
6.1
SAMPLE7
10/22/2003
3.1
0.279
7.2
SAMPLE8
10/29/2003
3.1 '
0.379
9.8
SAMPLE9
11/5/2003
2.2
0.305
5.6
SAMPLEI0
11/12/2003
2.5
0.268
5.6
AVERAGE
2.7
0.332
7.5
MAX
4.1
0.406
9.8
1,4 Dioxane
Best Fit 96 >10,000
Hour LC50* ppm
* Verschueren, Karel. Handbook of Environmental Data on
Organic Chemicals. New York. 1983

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
Gregory J. Thorpe, Ph.D., Acting Director
Mr. Manhar Patel
Monsanto Company
3468 Cedar Creek Road
Fayetteville, North Carolina 28301
ATA
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
July 30, 2003
Subject: Detection of 1,4-dioxane
Monsanto - Fayetteville WWTP
Cumberland County
Dear Mr. Patel:
Recently, 1,4-dioxane was detected in the effluent associated with NPDES Permit
NC0003719, issued to the Monsanto Company. While the Monsanto Company no longer
manufactures chemical products at the Fayetteville site, Monsanto remains responsible for
the NPDES permit and compliance therewith. It is the Division's understanding that
Monsanto has identified 1,4-dioxane as a component in both DAK and DuPont's processes,
and the processes associated with these facilities are responsible for the detectable levels
of 1,4-dioxane in the effluent.
To date, no certified data regarding 1,4-dioxane has been provided to the Division.
As part of the identification and reduction processes, the Division would like Monsanto to
collect effluent data on 1,4-dioxane. A minimum of ten (10) samples, spaced apart in time,
is required for the Division to assess the impact of the discharge on the receiving stream.
It is recommended that you run duplicate samples and submit QA/QC documentation
with your data. Submit these data to the NPDES Unit at the following address:
NPDES Unit
Division of Water Quality
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
In addition, Monsanto should continue to try to directly identify and limit the source
of the 1,4-dioxane and any other potential sources of toxicity. Moreover, you should
actively pursue connection to the Fayetteville-PWC collection system.
If you have any questions concerning this permit modification, please contact me at
[phone], extension 551.
Sincerely,
cc: Central Files
NPDES Unit
Fayetteville Regional Office - Water Quality Section
N�a talie V. Sierra
NPDES Unit
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
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