RTW >Engineering Services > Metro Wastewater Reclamation District
Metro Wastewater Reclamation District
Hydraulic Analysis & GIS System Development
Tetra Tech RTW completed an award-winning strategic planning project to determine wastewater treatment and collection facility capacities for future service requirements, compile the information into one document, and develop a system to maintain and update the document on an ongoing basis.
The District's transmission system included 43 gravity interceptor sewers; three lift stations; and three force mains and comprised approximately 235 miles of sewer ranging from 8" to 90" pipe; 65 primary metering facilities; 41 diversion structures; and 3750 manholes.
Tetra Tech RTW created a data base in-house that included comprehensive mapped and statistical information on the system. We structured the data base to provide information unique to each reach of sewer in the system. Information regarding pipe slope, length, and diameter was provided by the District from record drawings.
In addition to the statistical data base created, a GIS was used to create comprehensive maps of the transmission system. The maps were constructed in a system of layers and showed the location and layout of any of the following information: interceptors, forcemains, lift stations, manholes, and SSTAs, as well as reference information like streets, highways, rivers, and railroads. The GIS was integrated with the District's GeoSQL software.