WQ0040079_Compliance Evaluation Inspection_20230419

North Carolina Department of Environmental Quality  Division of Water Resources  Raleigh Regional Office
3800 Barrett Drive  1628 Mail Service Center  Raleigh, North Carolina 27699-1628
919.791.4200

April 19, 2023
Steven J. Pinkston – Plant Manager
Consolidated Diesel Company
9377 US 301 North
Whitakers, NC 27891-9641
Subject: Pre-Startup Inspection
Permit Number: WQ0040079
Consolidated Diesel Company
Waterhub
Reclaimed Water Generation and
Conjunctive Utilization System
Nash County
Dear Steven Pinkston,

On March 31, 2023 Chris Smith of the Raleigh Regional Office conducted a pre-startup inspection of the
Consolidated Diesel Company Waterhub - Reclaimed Water Generation and Conjunctive Utilization
System – Permit No. WQ0040079. The purpose of this inspection was to ensure compliance with the
subject permit. During the inspection the cooperation and assistance of Miriam Espinoza and Rodney
Freeman was helpful and appreciated.

This compliance evaluation inspection consisted of the following:
•Review of the permit;
•Review of the owner/facility information;
•On-site inspection of system components

The current permit was issued December 21, 2022 and expires May 31, 2024.
The permitted system consists of the continued operation and subsequent replacement of: two 2,400
square meter (m2) polymeric membrane bioreactor (MBR) units; two 5 .0 horsepower (hp) blower
motors and all associated piping, valves, controls, and appurtenances; to be replaced with the
construction and operation of: two 480 m2 ceramic MBR units with 80 ceramic membrane modules
each; two 7.0 horsepower (hp) blower motors; and all associated piping, valves, controls, and
appurtenances; the continued operation of a reclaimed water generation system consisting of: an
influent screen with flow meter; two 175 gallon per minute (GPM) grinder pumps; two automatic
screens with 2-millimeter (mm) openings; a 71,125 gallon anoxic basin with two 2.8 hp mixers; a
113,000 gallon aeration basin with two 675 cubic feet per minute (CFM) blowers; a 65,000 gallon
aeration basin (hydroponic tank) with a 337 CFM blower; two 10,533 gallon membrane tanks with two
111 CFM membrane blowers; two 52 GPM permeate pumps, two 34 GPM permeate transfer pumps,
and a 1,200 gallon permeate tank; three 2 gallon per hour (GPH) sodium hypochlorite feed skid systems;
a 2 GPH citric acid feed system; a 2 GPH anti-sealant feed system; a 2 GPH ammonia feed system; a
reverse osmosis (RO) filtration system with two 60.3 GPM RO booster pumps, and an 80 GPM RO clean-
DocuSign Envelope ID: 3991DA16-FFE4-44E6-9383-0C4C25279E2B
WQ0040079
Nash
April 19, 2023
Page 2 of 2

North Carolina Department of Environmental Quality  Division of Water Resources  Raleigh Regional Office
3800 Barrett Drive  1628 Mail Service Center  Raleigh, North Carolina 27699-1628
919.791.4200

in-place (CIP) pump; a 250,000 gallon chlorination tank; two 417 GPM recycle/wasting activated sludge
pumps; a 2 GPH sodium hydroxide feed system; a 2 GPH aluminum sulfate feed system; a 30,000 gallon
aerobic digester; a 17 GPM utility water pump; two turbidimeters; an effluent flow measuring device;
and all associated piping, valves, controls, and appurtenances; and the continued operation of a
conjunctive utilization system consisting of: a ground storage tank; a pump house; and all associated
piping, valves, controls, and appurtenances for use of the reclaimed water in a cooling tower.
At the time of the inspection the reclaimed water generation and conjunctive utilization system
appeared to be well maintained and in compliance with the requirements of permit WQ0040079.

If you have any questions about this inspection or this letter, please contact Chris Smith at
[e-mail] or 919-791-4200.

Sincerely,

Vanessa E. Manuel
Assistant Regional Supervisor
Water Quality Regional Operations Raleigh Regional Office

cc: Laserfiche

DocuSign Envelope ID: 3991DA16-FFE4-44E6-9383-0C4C25279E2B