NC0020656_Lab Evaluation Results_20051115

November15, 2005
133
Mr. Robert Ellis
Leith Creek WWTP Lab.
P.O. Box 249
Laurinburg, NC 28353-0249
SUBJECT: Performance Evaluation Results.
Dear Mr. Ellis:
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Noy 17`2 5.
'!rl _ :-p' is
Alan W. Klimek, P.E. Director
Division of Water Quality
tr. r :
The performance evaluation (PE) results submitted by your laboratory from the ERA Proficiency Testing Study
WP-126, DMRQA-25 and subsequent corrective action study 102605F have been received and evaluated. The
attached table represents the -status for each of your certified parameters and methods to date. A "Pass" entry
indicates your lab has satisfied the annual performance evaluation requirement. 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.
Your NC PE requirement for 2005 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 2005. Should a PE provider notify
us of a failure on one of your certified parameters, you will be required to analyze and 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 may result in decertification for that parameter.
Please contact us at 919-733-3908 if you have questions or need additional information.
Sincerely,
eeriii(gl(
Norman L. Good
Laboratory Section
Enclosure
cc: James W. Meyer
Fayetteville Regional Office
Laboratory Section
1623 Mail Service Center; Raleigh, NC 27699-1623
4405 Reedy Creek Road; Raleigh, NC 27607
Phone [phone] / FAX _ [phone] / Internet: www.dwglab.org
One
NorthCarolina
Naturally
An Equal Opportunity/Affirmative Action Employer— 50% Recycled/10% Post Consumer Paper

CERT # 133
2005 PERFORMANCE EVALUATION STATUS YEAR TO DATE 11/15/2005
� H:��' X fl y
Parameter/Method "
� �; N �, � F 1
, ....a,. PE ;status „ _...
FAIIow Up Due;
BOD, Std Method 5210B
Fail ERA DMRQA 25
12/17/2005
Pass ERA 102605F.
Complete
RESIDUAL CHLORINE, Std Method 4500 CI G
' Pass ERA DMRQA-25
COLIFORM FECAL, Std Method 9222D (MF)
Pass ERA.WP-126
CONDUCTIVITY, Std Method2510B
Pass ERA WP-126
DISSOLVED OXYGEN, Std Method 4500 O G
N/A
AMMONIA NITROGEN, Std Method 4500 NH3 F
Pass ERA DMRQA-25
pH, Std Method 4500 H B
Pass ERA DMRQA-25
RESIDUE SETTLEABLE, Std, Method 2540F
Pass ERA WP-126
RESIDUE SUSPENDED, Std Method 2540D
Pass ERA DMRQA-25
TEMPERATURE, Std Method 2550E
N/A
TURBIDITY, Std Method 2130E
Pass ERA WP-126
Specific Oxygen Uptake Rate
N/A