NC0026352_Effluent Data Review_20110216

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4CDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
February 16, 2011
Delane Jackson, Town Manager
Town of Bladenboro
Post Office Box 455
Bladenboro, North Carolina 28320-0455
SUBJECT: Wastewater Treatment Facility Effluent Data Review
NPDES Permit No. NC0026352
Town of Bladenboro WWTP
Bladen County
Dear Mr. Jackson:
A data review has been conducted of the Town of Bladenboro (Town) wastewater treatment
facility effluent data. This review centered around values submitted for mercury as submitted on.
Discharge Monitoring Reports (DMRs) and laboratory reports provided by Mr. Lynn Brisson of
your staff. The review revealed several items that should be addressed in order for the Division of
Water Quality to have accurate data required by your NPDES permit.
Attached please find review information noting required action where needed. Please submit
revised DMRs and information as noted by March 15, 2011. Also it is strongly suggested that you
perform a quality assurance check of all effluent data for the entire permit cycle (September 2004
to present) to ensure that DMRs are accurate. If during your review you discover other reporting
anomalies please provide revised DMRs to this office on or before March 15, 2011.
If you or your staff has questions or comments regarding this matter please do not hesitate to
contact me at [phone].
Sincerely,
Paul E. Rawls
Environmental Program Consultant
PER/per
Attachment: Mercury Data Review
cc: Mark Brantley, FRO
225 Green St., Suite 714, Fayetteville, NC 28301-5043
Phone: [phone] \ FAX: [phone]
Internet: www.ncwaterquality.orq
An Equal Opportunity1 Affirmative Action Employer— 50% Recycled 110% Post Consumer Paper

Mercury Data Review
Town of Bladenboro.
NPDES.Permit NC0026352
Review Period March 2009 -;November 2010
DMR Reporting Month: November 2010
Field Blank Results 1.17 ng/L (Method: EPA 1631)
Effluent Results 0.705 ng/L
DMR Value Reported 1.17 • ng/L
Action Required: Correct DMR to report 0.705 ng/L as effluent value and resubmit.
Also please submit action to address field blank results.
DMR Reporting Month: August 2010
Date Collected 8/272010
Date Reported on DMR 8/31/2010
DMR Value Reported <0.5 ng/L
Field Blank Results <.5 ng/L (Method: EPA 1631)
Effluent Results 2.38 ng/L
Action Required: Correct DMR for Date and Value
DMR Reporting Month: May 2010
DMR reported value 1.33 ng/L
Field Bland Results <0.500 ng/L (Method: EPA 1631)
Effluent Results 1.33 ng/L
Action Required: NONE
DMR Reporting Month: March 2010
DMR reported value 1.79 ng/L
Field Blank Results <0.500 ng/L (Method: EPA 1631)
Effluent Results 1.79 ng/L
Action Required: NONE
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DMR Reporting Month: November 2009
DMR reported value 1.04 ng/L
Field Blank Results <0.500 ng/L (Method: EPA 1631)
Effluent Results 1.04 ng/L
Action Required: NONE
DMR Reporting Month: August 2009
DMR reported value ng/L
Field Blank Results <0.200 ng/L (Method: EPA 245.7)
Effluent Results 1.59 ng/L
Action Required: Contact Lab to determine if EPA method 245.7 was used or EPA
Method 1631. If 1631 was used please resubmit DMR with notation that EPA
method 1631 was used. Note: Your current permit requires method 1631.
DMR Reporting Month: May 2009
DMR reported value 1.56 ng/L
Field Blank Results <0.500 ng/L (Method: EPA 1631)
Effluent Results 1.56 ng/L
Action Required: NONE
DMR Reporting Month: February 2009
DMR reported value 1.14 ng/L
Field Blank Results <0.200 ng/L (Method: EPA 1631) *
Effluent Results 1.14 ng/L
Action Required: EPA Method 1631 was noted, inquire of lab if detection level of
<0.200 ng/L shown is correct or should be reported as <0.500 ng/L (Please note that
0.500 ng/L is typically shown as detection level). If change is noted from lab, obtain
corrected report from lab and resubmit amended DMR with information from your
lab.
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