WQ0008431_2021 Residual Annual Report Review_20220223

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
S. DANIEL SMITH
Director
NORTH CAROLINA
Environmental Quality
February 23, 2022
Chris Phelps -Water Treatment Division Manager
City of Raleigh
PO Box 590
Raleigh, NC 27602
SUBJECT: Residual Annual Report Review
E.M. Johnson SDU
Non -discharge Permit No. WQ0008431
Wake County
Dear Mr. Phelps:
On February 23, 2022, Dorothy M. Robson of the Raleigh Regional Office completed review of the City's
2021 Annual Report for permit WQ008431. The report was received February 9, 2022. The report was
prepared by Raleigh Water.
According to the 2021 Residual Annual report, no residuals were placed in the surface disposal unit in
2021. As such, TCLP and residual monitoring analyses were not performed for the disposal permit, per
Condition III.2 and III. 3.
A summary of annual residual inputs to the disposal unit with note of the 2012 dredging and estimated
remaining volume and useful life was submitted and showed the unit to have a remaining volume of
approximately 28.9 million gallons. Freeboard records did not have readings less than 3.5 feet during the
2021 calendar year.
There were no significant issues or findings noted in the report review and therefore, a response to this
review is not required. If you should have any questions about this review, please do not hesitate
Dorothy Robson at 919-791-4241.
Cc: Laserfiche
Sincerely,
EDocuSigned by:
iNA.GSSO4 f . hAan,lm ,
B2918E8AB32144F...
Vanessa E. Manuel, Assistant Regional Supervisor
Water Quality Regional Operations Section
Raleigh Regional Office
Division of Water Resources, NCDEQ
North Carolina Department of Emkmmientd Q,amy Division of Water Resources
Raleigh Regional Office 3800 Barrett Drive I Raleigh North Carolina 27609
919.7919200