NC0044725_Inspection_20230203

ROY COOPER
Governor
ELIZABETH S. BISER
secretary
RICHARD E. ROGERS, JR.
Director
Seth Andrew Hatchell
Laurinburg-Maxton Airport Commission
16701 Airport Rd
Maxton, NC 28364
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NORTH CAROLINA
Environmental Quality
February 03, 2023
SUBJECT: Compliance Inspection Report
Laurinburg Industrial WWTP
NPDES WW Permit No. NCO044725
Scotland County
Dear Permittee:
The North Carolina Division of Water Resources conducted an inspection of the Laurinburg Industrial
WWTP on 1/25/2023. This inspection was conducted to verify that the facility is operating in
compliance with the conditions and limitations specified in NPDES WW Permit No. NC0044725. The
findings and comments noted during this inspection are provided in the enclosed copy of the inspection
report entitled "Compliance Inspection Report".
Comments
The facility's effluent sampler should be on flow proportional sampling as required b the facility's NPDES
permit.
PART II STANDARD CONDITIONS FOR NPDES PERMITS
Section A. Definitions
Composite Sample
A sample collected over a 24-hour period by continuous sampling or combining grab samples of at
least 100 mL in such a manner as to result in at total sample representative of the wastewater
discharge during the sample period. The Director may designate the most appropriate method
(specific number and size of aliquots necessary, the time interval between grab samples, etc.) on a
case -by -case basis. Samples may be collected manually or automatically. Composite samples may
be obtained by the following methods:
(1) Continuous: a single, continuous sample collected over a 24-hour period proportional to the
rate of flow.
(2) Constant time/variable volume: a series of grab samples collected at equal time intervals
over a 24 hour period of discharge and combined proportional to the rate of flow measured
at the time of individual sample collection, or
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(3) Variable time/constant volume: a series of grab samples of equal volume collected over a
24 hour period with the time intervals between samples determined by a preset number of
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Composite .lil }L
A sample collected over a 24-hour period by continuous sampling or combining grab samples of at least 100 rn1., in
such a planner as to result in a total sample representative of the wastewater discharge during the sample period. The
Director may designate the most appropriate method (specific number and si/.e of aliquots necessary, the time interval
between grab samples, etc.) on a case -by -case basis. Samples may be collected manually or automatically. Composite
samples may be obtained by the following methods:
(1) Continuous: a single, continuous sample collected over a 24-hour period proportional to the rate of flow.
(2) Constant time/variable volume: a series of grab samples collected at equal time intervals over a 24 hour period
of discharge and combined proportional to the rate of flow measured at the time of individual sample
collection, or
(3) Variable time/constant volume: a series of grab samples of equal volume collected over a 24 hour period with
the time intervals between samples determined by a preset number orgallons passing the sampling point, Flow
measurement between sample intervals shall be determined by use of a flow recorder and totalizer, and the
preset gallon interval between sample collection fixed at no greater than 1/24 of the expected total daily flow at
the treatment system, or
If you should have any questions, please do not hesitate to contact Hughie White with the Water
Quality Regional Operations Section in the Fayetteville Regional Office at 910-433-3300.
Sincerely,
Docu Signed by:
E4E1A969IDB248F
Mark Brantley, Asst. Regional Supervisor
Water Quality Regional Operations Section
Fayetteville Regional Office
Division of Water Resources, NCDEQ
ATTACHMENTS
Cc: WQS Fayetteville Regional Office (HW)
North C,wllna Department ofenvawma ,IQallty I Division of Water Resources
r Fayetteville Regional Offce127SGrten5tree.51a1e7141 FayetteNlk. North Garo�na 2&301
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910.433a"i00