MSD Critical Infrastructure Assessment & Asset Investigation
Metropolitan St. Louis Sewer District | St. Louis, Missouri
The Metropolitan St. Louis Sewer District (District) serves 1.4 million people and maintains thousands of miles of sanitary and storm sewers. Maintaining a system of this size requires accurate asset tracking, system evaluations, and maintenance planning and prioritization. The District implemented the Critical Infrastructure Assessment and Asset Investigation project to manage this large task. Since 2019, TREKK has supported the District with this endeavor, completing asset management projects from its Operations, Planning and Design departments.
The Critical Infrastructure Assessment & Asset Investigation project includes field reconnaissance of the sanitary, storm and combined sewers in 20 citysheds. TREKK’s field reconnaissance and mapping updates provide routine revisions to the District’s existing assets to assist in scheduling CCTV inspections, conceptualizing capital improvement projects, and creating accurate work orders for sewer maintenance. The TREKK team has completed 15 citysheds and two significant cemeteries, totaling more than 45,000 mapping updates. Real-time tracking of field reconnaissance efforts has been created and shared with the District to expedite emergency asset integrity reports to Operations and the District’s Customer Service.
To date, TREKK has completed more than 80 critical requests for various District departments, including smoke and dyed water testing, CCTV inspections, TREKK PreView camera observations, PIRR investigations, and capacity, management operations and maintenance (CMOM) manhole inspections.
TREKK’s other project tasks include:
- Coordinating access and scheduling CMOM inspections at more than 460 structures in hazardous locations to meet Consent Decree regulations and reporting requirements.
- Installing both permanent and temporary PreView cameras to help District staff understand wet weather flows and monitor debris on the bar screens. These cameras provide access to visual confirmation of system performance and substitute the need for manual field crew inspections, thereby reducing costs and providing safety to District staff.
- Performing corrective and preventative maintenance on the District’s Constructed Sanitary Sewer Overflow (SSO) monitoring equipment at 25 constructed SSO sites. In addition to quarterly maintenance work orders, field crews visit the SSO sites if an immediate response is required to restore accurate readings and communication.
- Record reviews to identify mapping discrepancies. If differences are found, they are then compared against available data from other resources such as existing CCTV and inspection data, central files record drawings, District Operations and Engineering personnel, as-built plans and I/I studies.
The MSD Experience interface provides access to the various components of the project in one organized location. This interface includes TREKK360 camera inspections, real-time cityshed field reconnaissance tracking, progress reports and a SharePoint page, all in one location.
