NC0031836_Verification of 6.0 MGD capability_20230831

c)l CITY otf
tae
NORTH CAROLINA
August 31, 2023
Gary Perlmutter, Environmental Specialist II
NCDEQ/Division of Water Resources
NPDES Municipal Permitting Unit
1617 Mail Service Center, Raleigh NC 27699-1617
Subject: Verification to Operate at 6 MGD
Permit No. NCO031836
Fourth Creek WWTP
Dear Mr. Perlmutter,
In response to your request dated Monday 28th, 2023 requesting information regarding an Engineer
Certification for the upgrade to 6 MGD. In 1987, the following additions were installed to bring the
Fourth Creek WWTP operable at the 6 MGD capacity.
• A 70' diameter x 12' deep final clarifier bringing the total to 3 final clarifiers.
• A second chlorine contact and effluent reaeration basin.
• A new aerobic digester with (3) 60 hp mechanical aerators.
• A new sludge pumping station with dual 25 hp rotary lobe sludge pumps.
• A new belt type filter press with associated polymer system, piping, valves, and fittings for
sludge dewatering.
The above additions are based on a set of drawings dated 1987, project t# 0732 from Peirson & Whitman
Inc. Consulting Engineers. Upon the start of my employment with the City of Statesville in 1996, the
above additions had already been installed and completed. The above information is to the best of my
knowledge and will serve as an amendment to the NPDES application renewal process.
S'nc ly,
And Smith
Water Resources Operations Manager
PO Box 1111 • Statesville, NC 28687 • ci.statesville.nc.us