DEQ-CFW_00005272

From: Chernikov, Sergei [/O=NCMAIL/OU=EXCHANGE ADMINISTRATIVE GROUP
(FYDIBOHF23SPDLT)/CN=RECIPIENTS/CN=SERGEI.CHERNIKOV]
Sent: 12/19/20113:59:06 PM
To: Benoy, Debra [/o=NCMAIL/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=debra.benoy]
Subject: Dupont Permit
Debra,
I was wondering if you had a chance to review my response that was sent on November 2. 1 also Included the copy of
this e-mail below. If you don't have objection against the renewal of the permit please sent me e-mail.
Thank you
Sergei
Debra,
This permit has the following changes:
• One clarifier was added to the description of the treatment facility.
• The permit limits have recalculated based on the latest OCPSF production information in accordance with the 40
CFR 414 Subpart D.
• The limits for Cr, Cu, CN, Pb, Ni, and Zn were added to the permit in accordance with the 40 CFR 414 Subpart D.
• The limit for F was removed from the permit based on the statistical analysis of the effluent data and the monitoring
was reduced to quarterly. The instream monitoring for F was removed from the permit.
Sergei
Sergei Chern€kov, Ph.D.
Environmental Engineer II
Complex Permitting Emit
Phone: [phone], fax [phone]
1.617 Mail Service Center
Raleigh, NC 27699-151.
Express mail: 512 Borth Salisbury St.
Raleigh, NC 27606
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.
Benoy, Debra
Sent: Wednesday, November 02, 20119:40 AM
Chernikov,Sergei
Subject: RE: Dupont '-
DEQ-CFW 00005272

Ifthere have beer) nochanges indischarge from the existing permit, PVVSSwould have nocomments. Ifthere are
changes could you be specific as to what they are?
Sent: Wednesday, November 02, 20119:25 AM
To: Benoy, Debra
Subject: Dupont Permit
I am working on the renewal of the permit for DuPont company —Fayetteville Works. |thas been brought tomy
attention that the segment of the river where the facility discharges its wastewater has been reclassified to WS-
IV. Please review the attached MEMO and the permit and sent meyour response. VVeaccept hard copy, electronic
version orfax.
Please let me know if you have any questions.
Environmental Engineer 11
Complex Permitting Unit
Phone: [phone], fax [phone]
1617 Mail Service Center
Raleigh, NC27699'l617
Express mail: S1INorth Salisbury St.
Raleigh, N[J76U6
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed tothird parties.