Utilities (Wastewater and Water)
UTILITIES (Wastewater and Water) RECORDS RETENTION SCHEDULE
| ||
|---|---|---|
| Description of Record | Retention Period | Legal Authority/Rationale |
| WASTEWATER RECORDS |
|
| U-1. Discharge Monitoring Reports (DMRs). | Retain 3 years or longer if so requested by Water Pollution Control as a minimum to comply with permit. Retention for life of the facility is recommended. | NPDES Permit Requirements Part I Subpart B.5. Provides record of operations and loading to assist in planning. |
| U-2. Industrial Pretreatment. All information resulting from monitoring activities. | *Retain 3 years, longer in cases of unresolved litigation. | 40 C.F.R. 403.12 (o) (1-3). |
| U-3. Laboratory Bench Sheets, Calibration and Maintenance of Instruments. QA/QC Data, Flow Charts. | Retain 3 years or longer if requested by Water Pollution Control. | NPDES Permit Requirements Part I Subpart B.5. |
| U-4. Land Application of Cumulative Pollutant Loading Rate Sludge under 40 C.F.R. 503.13.(a) (2) (I). | Permanent record. | 40 C.F.R. 503.17 (a) (5) (ii). |
| U-5. Monthly Operating Reports (MORs). | Retain 3 years or longer if requested by Water Pollution Control as a minimum to comply with permit. Retention for the life of the facility is recommended. | NPDES Permit Requirements Part I Subpart B.5. Provides record of operations and loading to assist in planning. |
| U-6. Wastewater Sludge Disposal via Land Application, Surface Disposal, Incineration. | *Retain 5 years. | (40 C.F.R. 503.17) Land Application; (503.27) Surface Disposal; (503.47) Incineration. |
UTILITIES (Water and Wastewater Records) | ||
Description of Record | Retention Period | Legal Authority/Rationale |
DRINKING WATER RECORDS |
| |
| U-7. Bacteriological Analysis. | *Retain 5 years. | Tenn. Comp. R. & Regs. 0400-45-01-.20 (a) |
| U-8. Chemical Analysis. | *Retain 10 years. | Tenn. Comp. R. & Regs. 0400-45-01-.20 (a) |
| U-9. Consumer Confidence Reports. | *Retain 3 years. | Tenn. Comp. R. & Regs. 0400-45-01.35 (5) (h)
|
| U-10. Cross Connection Records. | *Retain 5 years. | Tenn. Comp. R. & Regs. 0400-45-01-.20 (a) |
| U-11. Monthly Operating Reports (MORs). | Retain until next survey at a minimum. Retention for life of the facility is recommended. | Provides record of operations and loading to assist in planning. |
| U-12. Storage Tank Inspections. | Retain 5 years to comply with rule. Retention for life of the tank is recommended. | Tenn. Comp. R. & Regs. 0400-45-01-.20 (h). Retention for life of the tank is recommended to track deprecation and repairs. |
| U-13. Turbidity. Records include daily worksheets, calibration data, and strip charts. | Retain for 5 years. *Retain until the next sanitary survey. | Tenn. Comp. R. & Regs. 0400-45-01-.20 (f). |
| U-14. Variance or Exceptions Granted. | *Retain 5 years following the expiration of such variance or exemption. | Tenn. Comp. R. & Regs. 0400-45-01-.20 (d). |
| U-15. Violation, Corrective Action. Records of actions taken to correct violations of primary drinking water regulations. | *Retain 3 years after action. | Tenn. Comp. R. & Regs. 0400-45-01-.20(b). |
| U-16. Written Reports, etc., Related to Sanitary Survey. | *Retain 10 years after sanitary survey. | Tenn. Comp. R. & Regs. 0400-45-01-.20 (c). |
*Indicates a mandatory retention period based on state or federal law.