NC0083887_Correspondence_20180517

Denard, Derek /i/ ay 5 0 U 7
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Mr. Denard,
Eller, Joshua <[e-mail]>
Thursday, May 17, 2018 12:53 PM
Denard, Derek
Bell, Wes; Jordan, Jimmy
RE: [EXT] RE: [External] Washwater
Upon further investigation of the proposal submitted to Charlotte -Douglas Airport (CLT) for a one-time cleaning of new
glass panels, we at CLT feel that the quantity and application rate of the cleaning products, coupled with the procedural
Best Management Practices which would be implemented, indicate that this particular operation will have no impact on
the stormwater system or our permit compliance. For clarification, please know that the planned cleaning process is for
a single use and will be conducted in conjunction with the opening of the Airports newest concourse next month.
The total water usage for this cleaning operation is estimated to be between 50 and 75 gallons. The "Simple Green"
application rate will be 2oz per gallon of water. This product will be pressure washed from newly installed glass and the
resulting mist will likely evaporate prior to making contact with the ground. The "Goof Off' product will be applied only
as needed and in small amounts. Storm drains are either too distant from the site to be impacted, or they will be
protected from any potentially contaminated overspray.
CLT continues to work proactively to ensure we take the necessary precautions before allowing any operations of this
nature. We greatly appreciate your assistance in this matter and should you have any questions or concerns, please feel
free to contact me.
Thank you,
JOSHUA ELLER I ENVIRONMENTAL COMPLIANCE SPECIALIST
CHARLOTTE DOUGLAS INTERNATIONAL AIRPORT
m 704.793.7706
cltairport.com
From: Denard, Derek [mailto:[e-mail]]
Sent: Thursday, May 3, 2018 3:16 PM
To: Eller, Joshua
Cc: Bell, Wes
Subject: [EXT] RE: [External] Washwater
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Mr. Eller,
My thoughts are that you may need to complete a Biocide 101 form for the new cleaning products. You may need this
for your permit renewal.
Derek C Denard
Environmental Specialist
Compliance & Expedited Permitting Unit
N.C. Division of Water Resources
N.C. Department of Environmental Quality
919 807 6307 office
derek.denard ..ncdenr.aov
N. C. Division of Water Resources
Water Quality Permitting Section - NPDES
1617 Mail Service Center
Raleigh, NC 27699-1617
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
From: Eller, Joshua [mailto:[e-mail]]
Sent: Thursday, May 03, 20181:20 PM
To: Denard, Derek <[e-mail]>
Cc: Jordan, Jimmy <[e-mail]>
Subject: [External] Washwater
Send all-ssp c ous ema as an a ac me o
Mr. Denard;
I received your contact information from our regional agent, Mr. Wes Bell. He told me that you would be the person to
communicate with concerning cleaners, their resulting washwater, and how they may impact our permit compliance.
We've received a request from a vendor here at Charlotte Douglas International Airport, to use the products "Simple
Green All -Purpose Cleaner" and "Goof Off Gunk & Adhesive Remover" (see SDS sheets attached) in an outdoor
application. Best Management Practices (BMPs) such as minimizing the amount of cleaner used and directing the
washwater into gravel or grass, would be adhered to. Our NPDES Permit #NC0083887 (attached) allows for washing to
take place as long as BMPs are followed, the resultant washwater would be biodegradable, and the pH of the washwater
would be between 6 and 9 standard units (part VII Page 5 of 5, Section Q.
My question is, given the cleaners used and the BMPs in place, would this be allowed under our current permit? I
welcome your direction in this matter.
Thank you,