#5021 - 05 - 2012 - FINAL

INSPECTION REPORT ROUTING SHEET
To be attached to all inspection reports in-house only.
Laboratory Cert. #.
5021
Laboratory Name:
Clearwater Services
Inspection Type:
Field Commercial Maintenance
Inspector Name(s):
Jason Smith
Inspection Date:
Deborah Bradley
Date Report Completed:
June 1, 2012
Date Forwarded to Reviewer: June 4, 2012
Reviewed by:
Chet Whiting
Date Review Completed:
June 6 2012
Cover Letter to use: _
Insp. Initial _ Insp. Reg. _ Insp. No Finding _ Insp. CP X Corrected
Unit Supervisor:
Gary Francies
Date Received:
6/6/2012
Date Forwarded to Linda:
6/7/2012
Date Mailed:
6/8/2012 Ic

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NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue
Governor
5021
Ms. Deborah Bradley
Clearwater Services
2225 E NC 108 Hwy
Columbus, NC 28722
Charles Wakild, P. E.
Director
June 7, 2012
Dee Freeman
Secretary
SUBJECT: North Carolina Wastewater/Groundwater Laboratory Certification (NC WW/GW LC)
Maintenance Inspection
Dear Ms. Bradley:
Enclosed is a report for the inspection performed on May 17, 2012 by Jason Smith. Since the
finding(s) cited during the inspection were all corrected prior to the completion of the enclosed
report, a response is not required. The staff is commended for taking the initiative in correcting
the findings in such a timely manner. For certification maintenance, your laboratory must
continue to carry out the requirements set forth in 15A NCAC 2H .0800.
Copies of the checklists completed during the inspection may be requested from this office.
Thank you for your cooperation during the inspection. If you wish to obtain an electronic copy of
this report by electronic main, or if you have questions or need additional information please
contact me at 828-296-4677.
Sincerely,
c6zr�e
Gary
Francies
Certification Unit Supervisor
Laboratory Section
Enclosure
CC: Jason Smith
Master File
DENR DWO Laboratory Section NC Wastewater/Groundwater Laboratory Certification Branch
1623 Mail Service Center, Raleigh, North Carolina 27699-1623
Location: 4405 Reedy Creek Road. Raleigh, North Carolina 27607-6445
Phone: [phone] \ FAX: [phone]
Internet: www.dwglab.org
One
NofthCarolina
Naturally
An Equal Opportunity \ Affirmative Action Employer

LABORATORY NAME:
NPDES PERMIT #:
ADDRESS:
CERTIFICATE #:
DATE OF INSPECTION:
TYPE OF INSPECTION:
AUDITOR(S):
LOCAL PERSON(S) CONTACTED:
INTRODUCTION:
On -Site Inspection Report
Clearwater Services
NCO033552
2225 E NC 108 Hwy
Columbus, NC 28722
5021
May 17, 2012
Field Commercial Maintenance
Jason Smith
Deborah Bradley
This laboratory was inspected to verify its compliance with the requirements of 15A NCAC 2H .0800 for
the analysis of environmental samples.
The laboratory has all the equipment necessary to perform the analyses and records are well organized
and easy to retrieve. The laboratory has been proactive in keeping up with updates and changes required
by this program.
III. FINDINGS, REQUIREMENTS, COMMENTS AND RECOMMENDATIONS:
Proficiency Testing
Comment: The laboratory was not documenting Proficiency Testing (PT) samples in the same manner
as environmental samples (i.e., on a benchsheet). The Quality Assurance Policies for Field Labs
document states: The analysis of PT samples is designed to evaluate the entire process used to
routinely report environmental analytical results. Therefore, PT samples must be analyzed and the
process documented in the same manner as environmental samples. This requirement is a new policy
that has been implemented by our program since the last inspection. Notification of acceptable corrective
action (i.e., PT samples will be documented in the same manner as environmental samples) was
received by email on June 1, 2012. No further response is necessary for this finding.
Comment: The laboratory was not documenting the preparation of PT samples. The Proficiency Testing
Requirements document, February 20, 2012, Revision 1.2. states: PT samples received as ampules
must be diluted according to the PT provider's instructions. The preparation of PT samples must be
documented in a traceable log or other traceable format. The diluted PT sample becomes a routine
environmental sample and is added to a routine sample batch for analysis. This requirement is a new
policy that has been implemented by our program since the last inspection. Notification of acceptable
corrective action (i.e., PT sample preparation will be documented) was received by email on June 1,
2012. No further response is necessary for this finding.

Page 2
#5021 Clearwater Services
Total Residual Chlorine — Standard Methods, 19th Edition, 4500 Cl G
Comment: The curve was not verified at a concentration below the facilities permit limit of 17 ,ug/L. The
meter is used by this laboratory (at Polk Central Elementary) as well as the Tryon WWTP laboratory.
Based upon a recommendation by the auditor during the Tryon WWTP inspection, the lowest standard
concentration verified was 25,ug/L. When making this recommendation, the auditor was not aware of the
lower permit limit at Polk Central Elementary. The Technical Assistance for Field Analysis of Total
Residual Chlorine document states: The concentrations of the calibration standards must bracket the
concentrations of the samples analyzed. One of the standards must have a concentration equal to or
below the lower reporting concentration for Total Residual Chlorine. Demonstration of acceptable
corrective action (i.e., an acceptable five point curve verification including a standard verification of 10
pg/L) was received by email on May 31, 2012. No further response is necessary for this finding.
IV. PAPER TRAIL INVESTIGATION:
The paper trail consisted of comparing field testing records and contract lab reports to Discharge
Monitoring Reports (DMRs) submitted to the North Carolina Division of Water Quality. Data were
reviewed for Polk Central Elementary (NPDES permit #NC0033552) for January, February, and March,
2102. No transcription errors were detected. The facility appears to be doing a good job of accurately
transcribing data.
V. CONCLUSIONS:
All findings noted during the inspection were adequately addressed prior to the completion of this
report. The inspector would like to thank the staff for its assistance during the inspection and data review
process. No response is required.
Report prepared by: Jason Smith Date: June 1, 2012
Report reviewed by: Chet Whiting Date: June 6, 2012