On September 30, 2002 the City entered into a Consent Decree (CD) with the United States and the State of Maryland. This obligated the City to fund a comprehensive wastewater collection system evaluation and rehabilitation program.
The basic requirements are as follows:
- Elimination of existing sanitary sewer overflows (SSOs) and combined sanitary overflows (CSOs)
- A comprehensive sewer evaluation program.
- A comprehensive sewer rehabilitation program.
- Continuous upgrades to operations and maintenance.
This is a 14 year program with set deadlines: 2002 to 2016. Approximate Cost is $1B.
For more information regarding the Consent Decree and the City’s implementation plan, please view the following documents:
Elimination of SSO Discharge
- Design - All projects designed
- Construction Advertisement - All projects have been advertised for construction
- Construction - Originally 26 projects in CD; City divided into 39 projects: Approximate Cost: $330M including design.
– 39 CD projects have completed on schedule
– Over 29 miles of sewer rehabilitation
– Over 10 miles of new/replaced sewer
- Elimination of Engineered Overflows
– 60 of 62 SSO/CSOs have been eliminated
- Forest Park and Walbrook CSO Separation
– System is separated
Evaluation and Sewershed Plans
- Inspect 33,000 plus manholes
- CCTV inspect all pipes 8” or greater (1,100+ miles)
- Smoke/dye testing
- Address emergency repairs
- Update City GIS
- Develop a hydraulic model for each sewershed and overall
- I/I Evaluation
- CIP recommendations and costs
- Comprehensive plans to be submitted to MDE and EPA
- All construction projects and SSO eliminations have been performed within the deadlines (or revised deadlines). SSO eliminations mean less sewage getting into streams.
- All 8 Sewershed Final Reports submitted by July 1, 2010 per the CD deadline.
- City has seen a reduction in unpermitted SSOs City-wide despite on-going inspection of the entire system.
- MBE/WBE participation has been met for all contracted work.
- Excellent management processes in place, ranging from email communication protocols to web-based technical guidelines.
- Ensuring all schedule milestones are met.
- Managing large volume of data.
- Inspection of all manholes and sewer mains in collection system.
- Keeping the public and community groups informed on aspects of the Consent Decree (solution - we updated the City website to include more information).
- Leveraging resources, such as CCTV trucks, for such a large program
while competing against surrounding jurisdictions’ Consent Decree work.
- Addressing sources of sewage located in the storm system, despite the
fact that the Consent Decree is for a separate system.
- County flows and determining impact on City Rehabilitation projects
- Development of long term capital projects that eliminate SSOs and
determination of the optimal wet weather conditions to support modeling.
- Completing all Rehabilitation project by 2016