NC0024571_Dechlorination System_20010725

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FACILITY NOTIFICATION REPORT FORM
Date Notification Received: 1 '- _ 0 1
Facility's Name & County: i- y e , 1.- vn e 'fo n - 1?b beson
Facility NPDES Permit No.: �% C-0 0 U) Li 8 71
Person Making Notification & Phone No: Uo Yl Lo c.. k I E G r - q 16 _ 6 7 1 - 315
Notification Taken By: (€- i Y ct c s. I-Ie ri S
T pe of Unit Out of Operation: 5u (�,.t ,raLkAre
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14 Ct vn e-e/leg ti: Oct'
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Date of Field Visit:
44
Samples Taken: Yes:
Fi ld Office Actiops nd/or Recommendations:
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Other Sections Involved:
CC: ,Belinda Henson/Inspection Files
Don Register
Dale Lopez/Tx Files
Kitty Kramer/DMR files
Paul Rawls

FACILITY NOTIFICATION REPORT FORiM
Date Notification Received: % —2 ^7 .--a 1
Facility's Name & County: c- i •1--y o C k N rn be (fO rl — Rob b r S o orb
Facility NPDES Permit No.: ll1 C_O Q Q q .7 I
Person Making Notification & Phone No.: 4-o Loge +'d R ve 16 R 10 fC 71 - .3
Notification Taken By: ,D e I; n G ct 6 . W e_ o S o h
Type of Unit Out of Operation: NJ « 1
Permit Lirrit Violations: Sect 0 it, _ 14 L0 (a -o
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Date of Field Visit:
Samples Taken: Yes:
No: L.
Field Office Actions and/or Recommendations:
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�c; ( -t M t C.I�f I d (; t1 t s; r i,c �: I d a. `J S(' 10 c.t) Urn ; 4& 0
Other Sections Involved:✓1
CC: Belinda Henson/Inspection Files
Don Register
Dale Lopez/Tx Files
Kitty Kramer/DMR files
Paul Rawls

eLL9 of
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Office of L7%zief Ofrezatoz
(Wolfe azeaLmenE Jaei(ihrj.
Environmental Utility Services Department
July 30, 2001
Paul Rawls, Supervisor of Fayetteville Regional Office
North Carolina Department of Environment and Natural Resources
Division of Water Quality
225 Green street, Suite 714
Fayetteville, North Carolina 28301-5043
Re Chlorine Limit Effective July 01, 2001
Lumberton Permit # 0024571
Dear Mr. Rawls:
The effective date for compliance with chlorine limits of 28 ug/l for the above listed
permit began on July 01, 2001. The facility has installed sulfur dioxide feed equipment
for dechlorination and began to experiment with feed prior to July 01, 2001. The current
feed of sulfur dioxide is based on flow proportional. In the month of June the facility feed
sulfur dioxide and documented achieving the permit limits of 28ug/l was possible. The
facility has been using the electrode method for determining chlorine residual for many
years.
In the month of July 2001, the staff knew that our permit limits of 28ug/l must be achieved
in order to be in compliance with our permit limits, and all staff members are making
every diligent effort to achieve this limit. From July 01, 2001 through July 27, 2001, the
facility had FOUR (4) days with the current electrode method for residual chlorine
analysis, that residual numbers was above the 28ug/l permit limits.
On July 25, 2001 Frederick L. Bone, Lab Certification Auditor inspected the facility
laboratory, and he advised us that our current electrode method for chlorine residual
testing was not accurate below 100 ug/l based on our calibration criteria. He advised
that all chlorine laboratory data prior to July 01, 2001 was reportable per 100 ug/l
lowest accurate calibration for the electrode method He advised that the data generated
on July 01, 2001 would have to be reported per lowest calibration of the electrode
method at 100 ug/l. The problem is that effective July 01, 2001 our permit limits of
chlorine at 28 ug/l and our electrode detection method is only accurate at 100 ug/l.
700 .rafayzitz cSE. o Jn. CO. Box 1388, _L'um_Lrezton, c YozL eazofina 2$359 • 919 671-3859 • ¶ax 979 677-3874

Therefore, all chlorine residual generated for July 01, 2001 must be reported at the
lowest calibration for the electrode method, which is 100 ug/l.
Frederick L. Bone, Lab Certification Auditor also conferred with Jim Meyer, Lab
Certification Supervisor on July 25, 2001 about the current electrode method and those
calibration readings below 100 ug/1 is questionable.
As of end July 2001 all chlorine data will be reported based on 100 ug/l not at 28 ug/l.
Therefore, we will not be in compliance with our 28 ug/l permit limits. This problem is
also more complex due to the City of Lumberton's waste stream that is colored and has
conductivity, and the current low-level detection of chlorine with the use of Hack
Spectrophotometer method has interference due to color.
The facility staff will be investigating other methods of chlorine residual testing hoping to
find an approved method that is accurate with a low calibration of 28 ug/l and not
affected by color or conductivity.
Karen Lewis, City of Lumberton Laboratory Supervisor has been directed to investigate
the low-level ampermetric titration method and other methods that are supported by the
current technology. Ms. Lewis will be talking with Frederick L. Bone, Lab Certification
Auditor and Jim Meyer, Lab Certification Supervisor concerning the ampermetric
method. She will also be contacting other facilities in order to determine what methods
of chlorine residual testing they are using. The finding of other chlorine methods that
will work on the City of Lumberton's effluent will be reported to your attention. When we
find an approved method that meets the calibration of 28 ug/l, and not affected by color
or conductivity we will purchase the necessary equipment and incorporate into our
facilities usage plans.
We are feeding sulfur dioxide for dechlorination and we believe a chlorine residual of 28
ug/l or less exist, however we can not qual fy this with our current electrode method.
We would appreciate favorable approval of not being able to meet the current permit
limits for chlorine due to our equipment not meeting the calibration criteria for
calibration of 28 ug/l,

Thank you for your assistance and cooperation in this matter.
Respectfully,
PaS
Howard Revels, Deputy Director
/scar
Cc: _Pelina _ ns r
Kitty Cramer
Karen Lewis
n Locklear, WWTP Chief Operator, ORC

City of
November 29, 2001
LimIvtorz
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Environmental Utility Services Department
Paul Rawls, Fayetteville Regional Supervisor
Division of Water Quality
225 Green Street, Suite 714
Fayetteville, North Carolina 28301-5043
Re: Lumberton Wastewater Treatment Plant Improvements
Greenwall Construction Company
Dear Mr. Rawls:
,DEC 3 2001
As per previous letter from me dated October 29, 2001 I advised that the Lumberton
Wastewater Treatment Plant Improvements would require samplers, flow meters,
dechlorination process to be out of service at various times due to construction.
The following will address the first phase of construction by Greenwall Construction that
will occur on Monday, December 3, 2001 at influent head works. On December 3, 2001
the influent sampler and flow meter will be off-line due to moving electrical services and
excavation to begin the installation ofparshall flume.
The flow meter and flow proportional sampler will be off-line for at least three to four
weeks. The facility will need to sample with an Isco portable sampler and the effluent
flow meter will be used to record daily flows. The grit chamber will also be off line due
to construction.
Thanking you in advance for your cooperation in this matter.
Sincerely,
Howard Revels, Director
/scar
Cc: Belinda Hinson, Environmental Chemist
Kitty Cramer, Environmental Technician
Jon Locklear, WWTP Chief Operator
Karen Lewis, Laboratory Supervisor
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