Inspection Details

Site ID	Parent Site	Location	County	EFO
4919	Clarksville Gas and Water dba Clarksville Wastewater Treatment Plant	15 Quarry Road	Montgomery	Nashville

Inspection Number

113512

Site ID

4919

Permit Number

TN0020656

Inspection date

7/25/2023

Inspection type

Compliance Eval (non-sampling) (CEI)

Status

In Compliance

Notes

Active construction of the facility’s thermal dryer improvements was ongoing during the inspection. The flood control structures that contributed to the July 12, 2021, illicit discharge and Notice of Violation (NOV) were still locked, with equipment and procedures accessing the sluice gates were still inaccessible and effective, respectively. Two of the three primary clarifiers were in operation during the inspection. One of the three aerobic basins was offline for diffuser improvements. Small amounts of solids were observed leaving the secondary clarifier weirs but did not appear to impact downstream treatment.

Outfall 001 is located about a mile from the facility in the adjacent Riverside Greenway. The effluent contributed fine bubbles to the surface of the receiving stream but did not appear to have any impact on the receiving waters. No odors, scum, or foam were discovered from the outfall during the inspection. Analysis for CBOD, ammonia, TSS, total chlorine residual, E. coli, settleable solids (SS), and dissolved oxygen (DO) are performed in house. Total nitrogen, total phosphorus, and IC25 are contracted out to Pace Analytical.

Clarksville STP is well operated and maintained. No major concerns were noted during the inspection, and the facility appears to be operating in a manner that is compliant with the terms of its NPDES Permit; and continued system upgrades are having a meaningful impact in reducing overflows in the system.