DEQ-CFW_00060978

A74LA.
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
November 23, 2004
5105
Mr. Michael E. Johnson
DuPont Company - Fayetteville Works
22828 NC Hwy. 87 W
Fayetteville, NC 28306-7332
SUBJECT: Performance Evaluation Results
Dear Mr. Johnson:
William G. Ross, Jr., Secretary
Alan W. Klimek, P.E., Director
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The performance evaluation (PE) results submitted by your laboratory from the APG Proficiency Testing
Study DMRQA-24 have been received and evaluated. The results detailed below represent the status for
each of your certified parameters and methods to date. A blank in the "PE complete" column indicates no PE
yet recorded for this calendar year. A "Pass" entry indicates your lab has satisfied the annual performance
evaluation requirement for that parameter and/or method. Other information in this column indicates vendor
and Study identification. A "Fail" entry requires a follow up sample to be analyzed and reported to this office
within 60 days. An N/A entry represents parameter exemption from the performance evaluation
requirement. A date entered beside the "Fail" entry represents the completion deadline for this PE follow up.
pH, Std Method 4500 H B
Pass APG DMRQA 24
pH, EPA Method 150.1
Pass APG DMRQA 24
TEMPERATURE, Std Method 2550B
N/A
TEMPERATURE, EPA Method 170.1
N/A
Your NC PE requirement for 2004 has been satisfied for all of your certified parameters and methods.
You are not required to submit additional results to this office for the calendar year 2004. Should a PE
provider notify us of a failure on one of your certified parameters, you will be required to analyze add submit
a follow up blind PE result. Failure to analyze and submit an acceptable follow up sample result within 60
days or producing a second successive unacceptable result will result in decertification for that parameter.
Please contact us at 919-733-3908 if you have questions or need additional information.
cc: James W. Meyer
Fayetteville Regional Office
Laboratory Section 1623 Mail Service Center, Raleigh, North Carolina 27699-1623
4405 Reedy Creek Road, Raleigh, North Carolina 27607
Phone: [phone] / FAX: [phone] / Internet: www.dwglab.org
An Equal Opportunity/Affirmative Action Employer — 50% Recycled/10% Post Consumer Paper
Sincerely, 12I
Norman L. Good
Laboratory Section
NorthCarolina
Naturally
DEQ-CFW 00060978