NC0048577_Lab Inspection_20021113

Michael F. Easley, Governor
William G. Ross Jr., SecretaryvZ
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director ( (� .
Division of Water Quality
November 13, 2002
515
Ms. Katie Radford
Robeson Co. Water Dept.
265 McGirt Road
Maxton, NC 28364
SUBJECT: Laboratory Certification Maintenance Inspection
Dear Ms. Radford:
Enclosed is a report for the inspection performed on October 23, 2002 by Mr. Frederick L.
Bone. Where deficiencies are cited in this report, a response is required as well as for all lettered
comments and/or recommendations. Within thirty days of receipt, please supply this office with a
written item for item description of how these deficiencies, comments and/or recommendations were
corrected. If the deficiencies cited in the enclosed report are not corrected, enforcement actions will
be recommended. For certification maintenance, your laboratory must continue to carry out the
requirements set forth -in 15A NCAC for 2H .0800.
Copies of the checklists completed during the inspection may be requested from this office.
Thank you for your cooperation during the inspection. Please contact us at 919-733-3908, if you have
questions or need additional information.
Sincerely,
James W. Meyer
Laboratory Section
Enclosure
cc: Frederick L. Bone
Fayetteville Regional Office
T
NCDENE
Laboratory Section N. C. Division of Water Quality, 1623 Mail Service Center . Raleigh, NC 27699-1623
[phone] Fax: [phone] Internet: dwglab.org Customer Service 1-800-623-7748

On -Site Inspection Report
LABORATORY NAME: Robeson Co. Water Dept.
ADDRESS: 265 McGrit Road
Maxton, NC 28364
CERTIFICATE NO: 515
DATE OF INSPECTION: October 23, 2002
TYPE OF INSPECTION: Maintenance
EVALUATOR: Frederick L. Bone
LOCAL PERSON(S) CONTACTED: Katie Radford -
• I. INTRODUCTION:
This laboratory was inspected to.verify its compliance with the requirements of 15A NCAC 2H -
.0800 for the analysis of environmental samples.
II. GENERAL COMMENTS:
The laboratory is spacious and well equipped. All facilities and equipment are well maintained.
Records are well kept and most data looked good. Some further quality control procedures "need
to be implemented.
III. DEFICIENCIES, RECOMMENDATIONS, 'REQUIREMENTS, AND COMMENTS:
General:
A. COMMENT: The laboratory does not list the acceptance ranges of quality control samples.
on the laboratory benchsheets. CITED PREVIOUSLY "
RECOMMENDATION: It is strongly recommended that the laboratory list the acceptance
ranges for each quality control sample on the benchsheet. This will enable the analyst to be
able to compare the analytical result to the acceptable range in a timely fashion. If the sample
is out of the acceptable range, it can then be reanalyzed immediately and within all holding
times. Listing the acceptance ranges of the duplicate pairs on the laboratory benchsheets will
demonstrate that the duplicate pairs are within the acceptable control limits established by
laboratory.
Residual Chlorine:
1. DEFICIENCY: Each analyst that performs analysis of Residual Chlorine samples must
produce a standard curve on an annual, basis. Currently the back-up operator that analyzes
samples in the absence of the laboratory" chemist doesnot have an analytical curve on file.

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REQUIREMENT: Each analyst performing the analytical procedure must produce a standard
curve. Ref: 15A NCAC 2H .0800 (a) (7) (I):
B. COMMENT: The laboratory does not demonstrate the linearity of the residual chlorine
analytical curve. The laboratory is not calculating correlation coefficients for the standard
curves for residual chlorine.
REQUIREMENT: The laboratory must calculate a correlation coefficient for each analytical
curve in order to demonstrate linearity. .Analytical Quality Control Program. Each laboratory
shall develop and maintain a document outlining the analytical quality control practices used
for the parameters included in their certification. Supporting records shall be maintained as
evidence that these practices are being effectively carried out. The quality control document
shall be available for inspection by the State Laboratory. Ref: 15A NCAC 2H .0805 (a) (7).
IV. PAPER TRAIL INVESTIGATION:
This consisted of comparing data reported on DMR's submitted to this Division for the months of
January, March, and July 2002 with the values obtained on laboratory bench worksheets. The
review of this data indicated no problems in proper data reporting.
V. CONCLUSIONS:
Correcting the above Deficiency and Comments will help the laboratory to produce quality data
and meet certification requirements.
Please respond to all Deficiencies and lettered Comments cited in
this report.
Report prepared by: Frederick L. Bone Date: October 25, 2002