911 Washington Ave, St. Louis, MO 63101
Telephone: +1 (314) 558-0699

WASTEWATER SERVICES

  • Hydraulic Modeling (XP-SWMM, HYDRA)
  • Alignment Studies
  • Sewer Design
  • Inflow Infiltration Reduction
  • Private Inflow Reduction
  • Sanitary Sewer Evaluation Study (SSES)
  • Condition Assessment
  • Combined Sewer Separation
  • Pump Station Design
  • Force Main Design​
EXPLORE WASTE WATER PROJECTS
SCADA System Upgrade

SCADA System Upgrade

St. Louis MSD needed to relocate several hundred SCADA (Supervisory Control and Data Acquisition) towers for sanitary lift stations to accommodate a new region-wide system. M3 was retained to investigate potential sites and to design fiber optic lines under railroads and highways. Using GIS, M3 analyzed all properties in circular footprints at one-half mile radial increments from the existing towers. GIS assessor’s plats and property layers were used to document distance from the existing tower, addresses, owners, acreage, and availability to accommodate a new tower. Once the high-potential properties were identified, a SCADA signal analysis was performed to ensure that a new tower could adequately transmit data to and from the SCADA...
Creve Coeur Creek Sanitary PH VI

Creve Coeur Creek Sanitary PH VI

M3 designed 7,933 lineal feet of sanitary sewers varying in size from 10" to 54" in diameter located west of Schoettler Drive and north of Clayton Road, in the City of Chesterfield, MO. The project included three stream crossings that required rip-rap stream protection over the piping, as well as 2,500 feet of streambank stabilization to protect the sewer where the alignment ran parallel to the stream. The proposed project relieved the existing system of excessive surcharged flow levels and eliminated two constructed Sanitary Sewer Overflows (SSOs). M3 modeled the proposed sewers using HYDRA, prepared construction documents, cost estimates, and provided construction services. Project challenges included the need for 500 feet of...
Analyzing Alternate Flood Control Measures

Analyzing Alternate Flood Control Measures

This multi-year project includes updating the Chicago TARP model using InfoWorks, running the model, and using an optimizer software to optimize the benefits and impacts of alternate flood control measures in various subareas within Chicago. The project also includes arranging meetings and workshops with stakeholders and developing presentation materials for the meetings. M3 Engineering is performing InfoWorks hydrologic and hydraulic model updates, supporting GIS mapping and analysis, and optimizing the models using Optimatics softwareM3 Engineering is performing InfoWorks hydrologic and hydraulic model updates, supporting GIS mapping and analysis, and optimizing the models using Optimatics software. Project deliverables includes...
DC-02 DC-03 Sanitary Sewer Design

DC-02 DC-03 Sanitary Sewer Design

In order to help St. Louis MSD, eliminate constructed SSOs as part of MSD’s Consent Decree agreement with the EPA, M3 Engineering designed and prepared plans for 6,000 feet of 48” diameter relief sewer. M3’s effort began by analyzing and evaluating alternative alignments from Two Mile Creek to Log Cabin Lane. Once MSD selected the preferred alignment, M3 modeled the existing and proposed sewers using XP-SWMM to determine the correct sewer sizes that would eliminate SSOs. Construction documents were prepared and included Plan and Profile drawings and technical specifications. M3 secured permits with several agencies and municipalities.