NC0083887_Reporting Requirements-Outfall 001_20150317

ATA
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory Donald van der Vaart
Governor Secretary
March 17, 2015
RECEIVMAR ED23 201IDENRJDWR5
Mr. Jack Christine
Interim Deputy Aviation Director Water Quality.
City of Charlotte permitting Sectior
5501 Josh Birmingham Pkwy.
Charlotte, North Carolina 28208
Subject: Reporting Requirements— Outfall 001
Charlotte Douglas International Airport
NPDES Permit No. NC0083887
Mecklenburg County
Dear Mr. Christine:
A recent file review found that the Division of Water Resources (DWR) compliance reporting
database had flagged multiple Charlotte Douglas International Airport discharge monitoring reports
(DMR) with permit monitoring violations for monthly monitoring of xylene at Outfall 001. The
compliance system generates violations after the data from your monthly DMRs have been entered
and compared with the requirements of your permit.
A physical review of the January through December 2014 DMRs found numerous reporting issues as
noted below due to the use of the wrong EPA parameter reporting codes and the reporting of what
appears to be erroneous data. Your reporting codes and units must match those entered in our
compliance database for the data entry staff to log your monitoring results and credit you with the
required monitoring. Below is a summary of the reporting issues noted for the past 12 months of
DMRs submitted to the Division.
• NC0083887 requires quarterly toxicity testing with the fathead minnow. Section E. (2.) notes
that this quarterly testing should be reported on the relevant DMR using EPA parameter code
TAE6C; you have been incorrectly using parameter code 61427.
• Your permit requires monthly ethylbenzene testing and the correct EPA parameter code is
34371; you have been incorrectly using parameter code 34030.
• Your permit requires monthly xylene testing and the correct EPA parameter code is 81551;
you have been incorrectly using parameter code 34010.
• Your permit requires monthly toluene testing and the correct EPA parameter code is 34010;
you have been incorrectly using parameter code 34371.
Mooresville Regional Office
Location:610 East Center Ave.,Suite 301 Mooresville,NC 28115
Phone:[phone] Fax:[phone] Customer Service:1-877-623-6748
Internet:http:llportal.ncdenr.orglweblwq

Charlotte Douglass International Airport, Page 2
• You have been reporting ammonia monitoring and the correct EPA parameter code is CO610
with reporting units of mg/L; you have been incorrectly using parameter code 81551 and units
of p.g/L.
• On each of the January through December 2014 DMRs you have reported an oil &grease
concentration of 4.0 mg/L on the 6th day of each month. This value seems to be in error since
it appears on each DMR and because you reported no flow through Outfall 001 in February
and October 2014.
For the Division and the public to have accurate data (available through the EPA ECHO compliance
database)for your self-monitoring program and to address the monitoring violations noted for the
2014 monitoring year(conveyed to you under separate cover) this office is requiring that amended
DMRs be submitted for all 12 DMRs within the 2014 monitoring year. Please submit the
amended DMRs to the attention of Ms. Marcia Allocco using the mailing address noted in the
page footer by April 17, 2015. You should also amend any 2015 DMRs that have already been
submitted to the Division's Central Files using incorrect parameter codes and ensure all future
submissions are using corrected DMR templates.
If you have questions concerning this matter please do not hesitate to contact Ms. Marcia Allocco or
myself at [phone].
Sincerely,
Michael L. Parker, Regional Supervisor
Water Quality Regional Operations Section
Division of Water Resources, NCDENR
cc: R. Rozzelle, MCWQP
Wastewater Branch
Central Files (MSC 1617-basement)