The Utilization of Stream Restoration to Meet MS4 Permit Requirements
Katie Boehmer, PE
JMT
Pittsburgh, PA
Andrew Donaldson
JMT
York, PA
Authors: Boehmer, K., Donaldson, Andrew
The MS4 Stream Restoration Projects in the City of Pittsburgh repaired two impaired stream channels utilizing natural stream channel design. JMT, in conjunction with Pittsburgh Water performed design and permitting for this water quality improvement project which helped Pittsburgh Water to meet their sediment reduction goals as part of their MS4 Permit Requirements in which they were co-permittees with the City of Pittsburgh. As part of this project, two sites had initially been identified in Pittsburgh Water’s Pollutant Reduction Plan (PRP) however, one of the sites was no longer viable once design started. JMT was tasked with identifying an alternative site that met the eligibility requirements outlined by the Pennsylvania Department of Environment Protection for stream restoration projects to be used as an MS4 Best Management Practice.
The presentation focuses on the eligibility requirements for utilizing stream restoration projects as an MS4 Best Management Practice. JMT provided design for stabilizing eroding stream banks through natural stream channel design techniques for restoring ecological functions and obtaining water quality credits within two watersheds to meet Pittsburgh Water’s MS4 Pollutant Reduction Plan’s (PRP) requirements in accordance with their NPDES Permit. This presentation will discuss in detail the eligibility requirements in order to qualify a stream restoration project as an MS4 best management practice and go over the site search and the revisions that were required to the pollutant reduction plan. The presentation will touch on the design approach as well as give a construction update as this project has a compliance date of June 30th, 2025.
About Katie Boehmer, PE
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About Andrew Donaldson
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