NC0025321_SOC - September 2023 Quarterly Report_20230914

09/14/2023
Quarterly report

Construc�on of the plant is s�ll on schedule. Harper Construc�on is working on several different parts
of the plant. Jackson electric is on site and is in full swing on laying the new power grid for the plant.
The headworks
Work is on going for the new headworks area of the plant. The wet well for the primary pump sta�on is
complete. This wet well is 24’ deep. The slab for the filtra�on building was poured last week. The walls
for the building will be formed next week.
Aera�on basin
We have emp�ed the most northern basin and the most southern basin (basin 1&4). We began
pumping basin number 1 into the adjoining basin to draw down basin 1 for the new grid that is going in.
This caused an upset in the secondary clarifiers adding to the already problema�c clarifiers. We
reposi�oned the discharge line to pump everything to the head of the plant above the bar screen to
catch any trash present.
The grid is now being laid in basin 1. This should be completed this week and star�ng on the 4th basin
next week. The plan is to complete basin 1&4 and fill those back up bring them online. Then Harper will
draw down basin 2&3 to repeat the process.
I feel like once we get a new grid in the aera�on basin, and everything brought back online we will have
beter treatment in the biological process. The current design allows a lot of chances to short circuit the
treatment process.
Secondary clarifiers
Work has been completed to raise the wall height in the secondary clarifiers as much as allowable, un�l
we are far enough along to be able to bypass the secondary clarifiers. The plan is to use the primary
clarifiers as secondary clarifiers. There will be a bypass system put in place to pump around the
secondary clarifiers.
I think once we have beter air control and a deeper secondary clarifier with beter sludge removal, we
will be opera�ng much beter and be in compliance.
Overall opera�on
The overall opera�on of the plant has been normal, apart from minor disturbances caused by closing
and opening basins for construc�on work. The main problem we are experiencing is solids escaping the
secondary clarifiers. We are running the press 24 hours a day to remove as many solids as possible from
the plant. We plan to con�nue this un�l early January when the press rehab is scheduled. This will take
the press offline for an es�mated �me of 4 to 6 weeks.