NC0001058_Permit (Correction)_20120103

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NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, P. E. Dee Freeman
Governor Director Secretary
January 3,2012
Mr. R. Hunter Copeland, Environmental Manager
DSM Pharmaceuticals, Inc.
P.O. Box 1887
Greenville, NC 27838
Subject : Permit correction NC0001058
Removal of Footnote#4 for Ethylene Glycol
Dear Mr. Hunter:
Pursuant to your December 22,2011 request to remove the monitoring requirement for Ethylene Glycol
from NPDES Permit NC0001058,the Division of Water Quality(DWQ)has granted your request . The
permit renewal dated November 25,2009 did not contain a sampling or monitoring requirement but still
had the Footnote#4 referencing Ethylene Glycol.
Attached please find the corrected Effluent page with the aforementioned footnote removed. Please
replace your existing effluent page with this corrected document.The DWQ apologizes for any •
inconvenience this oversight may have caused.
If you have any questions or I can be of further service, please contact me at(919)807-6387 or at
bob.auerra(ancdenr.aov.
incerel,,
Arles Wakild, P.E.
Cc: Corrected Effluent page NPDES permit NC0001058
Washington Regional Office, Kristen Jarman
NPDES Files
Central files
1617 Mail Service Center,Raleigh,North Carolina 27699-1617
Location:512 N.Salisbury St Raleigh,North Carolina 27604
Phone:[phone] FAX:[phone] Customer Service:1-877-623-6748
Internet www.ncwaterttualitv.orq
An Equal Opportunity 1 Affirmative Action Employer NonrthCarolina
Naturally

Permit NC0001058
A. (1) EFFLUENT LIMITATIONS.AND MONITORING REQUIREMENTS
Beginning on January 1, 2010 and lasting until expiration, the Permittee is authorized to discharge non-contact
cooling water from Outfall 001 and 002. Such discharges shall be limited and monitored by the Permittee as
specified below:
EFFLUENT LIMITATIONS MONITORING REQUIREMENTS.
PARAMETER
•
Monthly Daily Measurement Sample Sample
Average Maximum Frequency Type Location'
Flow Monthly Instantaneous Effluent
Total Residual Chlorine' Monthly Grab Effluent
Temperature,°C 3 Monthly Grab Effluent
pH >6.0 and<9.0 standard units Monthly Grab Effluent
Footnotes:
1. Effluent monitoring requirements apply only if non-contact cooling water is discharged via Outfalls 001/002.
If non-contact cooling water is not discharged during a particular month,the permittee should write"No
Flow"on the submitted Discharge Monitoring Report(DMR).
Effluent Sampling Point=Outlet of the cooling tower blowdown,prior to comingling with the other waste
streams.
2. TRC monitoring requirements apply only if chlorine is added to the cooling tower.
The Division shall consider all effluent TRC values reported below 50 ug/1 to be in compliance with the
permit. However,the Permittee shall continue to record and submit all values reported by a North Carolina
certified laboratory(including field certified),even if these values fall below 50 ug/1.
3. The temperature of the effluent shall not cause an increase in the temperature of the receiving stream of more
than 2.8°C,and in no case cause the ambient water temperature to exceed 32°C.
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.
A. (2) BIOCIDE CONDITION
There shall be no chromium,zinc or copper added to the treatment system except as pre-approved
additives to biocidal compounds.
The permittee shall obtain approval from the Division's Aquatic Toxicology Unit prior to the use of any
biocide(not previously approved by the Division)in the effluent discharged under this permit. Approval
for use of any biocide not previously approved should be requested at least 90 days in advance of any
planned usage.
Contact the Aquatic Toxicology Unit for detailed instructions on requesting approval of biocides:
NC DENR/DWQ/Aquatic Toxicology Unit
1621 Mail Service Center
Raleigh,North Carolina 27699-1621

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DSM
BRIGHT SCIENCE.BRIGHTER LIVING.
DSM Pharmaceuticals,Inc.
Engineering
Division of Water Quality
NCDENR 5900 Martin Luther King Jr.Highway
ATTN: NPDES Permit Unit Greenville,North Carolina 27834
1617 Mail Service Center P.O. Box 1887
Raleigh, North Carolina 27699-1617 Greenville, North Carolina 27835-1887
United States
Date Contact person
December 13, 2011 R. Hunter Copeland, Environmental Engineer
phone [phone]
fax [phone]
mobile [phone]
[e-mail]
Subject: Request to Remove Ethylene Glycol Sampling
Dear Sir/Madam
DSM Pharmaceuticals, Inc. would like to request the removal of ethylene glycol as a sampling parameter.
The current NPDES Permit NC0001058 which became effective January 1, 2010 requires sampling of
ethylene glycol in discharge in Footnote 4 in Section A.(1). This footnote reads as follows:
Ethylene glycol monitoring is imposed for the purpose of evaluating ethylene glycol discharges from this
facility and resulting impacts on receiving waters. Upon petition from the permitee and at such time as
all sources of ethylene glycol discharges are eliminated or analytical data collected for a period of at
least 2 years under the terms of this permit indicate no significant water quality concerns, the
requirements for ethylene glycol monitoring shall be evaluated and modified accordingly.
DSM Pharmaceuticals is submitting the most recent data set from August 2007 to October 2009, a period of
27 months, of analytical data for review. After October 2009 until November 2011, cooling tower
discharge were sent directly to the POTW, due to lack of ability to dechlorinate the discharge. In
November of 2011, the ability to dechlorinate the discharge was achieved.
The analytical data demonstrates that there is not a threat of discharging ethylene glycol from the facility.
Over the 27 months of sampling data supplied there was only one time that this parameter was detected
and it is believed that it may have been due to runoff from the adjacent parking lot. Upon review of the
data by NCDENR, DSM Pharmaceuticals, Inc would like to request the removal of this sampling
requirement.
If there are any other question you can contact me if needed.
Kind regards
D
R. Hunter Copeland DEC 2 2 2011
Environmental Engineer
DENR-WATER QUALITY
POINT SOURCE BRANCH
HEALTH • NUTRITION •MATERIALS

Month Date Ethylene Glycol Ethylene Glycol
Outfall 001 ; mg/L Outfall 002; mg/L
Aug-07 8/31/2007 0 0
Sep-07 9/5/2007 0 0
Oct-07 10/3/2007_ 0 0
Nov-07 11/7/2007 0 0
Dec-07 12/2/2007 0 0
Jan-08 1/2/2008 0 0
Feb-08 2/6/2008 0 0
Mar-08 3/5/2008 0 0
Apr-08 4/2/2008 _ 0 0
May-08 5/7/2008 0 0
Jun-08 6/4/2008 67 0
Jul-08 7/2/2008 0 0
Aug-08 8/6/2008 0 0
Sep-08 9/3/2008 0 0
Oct-08 10/1/2008 0 0
Nov-08 11/5/2008 0 0
Dec-08 12/3/2008 0 0
Jan-09 1/14/2009 0 0
Feb-09 2/4/2009 0 0
Mar-09 3/4/2009 0 0
Apr-09 4/8/2009 0 0
May-09 5/6/2009 0 0
Jun-09 6/3/2009 0 0
Jul-09 7/1/2009 0 0
Aug-09 8/5/2009 0 0
Sep-09 9/2/2009 0 0
Oct-09 10/7/2009 00