DWQ-2024-004369

DWQ-2018-014202

UPDES General Permit for Construction
Dewatering and Hydrostatic Testing (CDHT)

CORRECTIVE ACTION PRACTICES

Upon any visual observation of Best Management Practices (BMPs) failure, inadequate BMPs, elevated turbidity, or an
oil sheen, the following steps must be conducted:
1) Take a grab sample for analysis anytime there is an observation of elevated turbidity and/or oil and grease.
2) Cease discharge of dewatering effluent until the issue is resolved.
3) Conduct a site-wide inspection to observe operating conditions and BMP maintenance.
4) Address any BMP failures by determining whether there was a failure in design, installation, or maintenance and
perform the appropriate measures to fix the failure, including determining whether BMPs should be modified or if
additional measures must be taken.
5) Document the issue and resolutions in the daily log and update the Dewatering Plan.
6) Notify the Division of Water Quality.
a. Reporting should follow Permit requirements including the 24-hour and 5-day written Noncompliance
Reporting as per the Permit Part III.L-N.
b. To report incidents “Initial Non-Compliance Notification” is available at: https://deq.utah.gov/water-
quality/general-construction-storm-water-updes-permits
7) Include a report with the next DMR submittal.