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DWR Inspections
Inspection Details
Site ID
Parent Site
Location
County
EFO
6412
Harpeth Valley Utility District STP
4063 Old Hickory Blvd.
Davidson
Nashville
Inspection Details
Inspection Number
49292
Site ID
6412
Permit Number
TN0074748
Inspection date
1/29/2016
Inspection type
Compliance Eval (non-sampling) (CEI)
Status
In Compliance
Notes
Facility & site in good condition, well maintained. All treatment units in operation & functioning properly. De-nitrification zone, then oxidation ditches with aerators adjusted to get optimum treatment. Effluent of good quality & meeting permit limits. Only 1 BOD & 1 TSS violation in past 2 years. Some overflow events, but there is on-going collection system rehabilitation program to address I/I. Records & reports are acceptable. Flow meter & other self-monitoring & lab equipment calibrated annually as required. Some problems with BOD initial DO being supersaturated & problems with polyseed blank depletion. Use of polyseed is not necessary & will be stopped, samples are collected before UV disinfection & don't require seeding. Staff gauge in Parshall flume & effluent flow meter sensor are not aligned properly, needs adjustment.