Archives
The Wetlands-At-Risk Protection Tool: A five-step process to identify and protect wetland functions
Wetlands and Wetland Restoration: Recommendations of the Wetland Expert Panel for the incorporation of non-tidal wetland best management practices (BMPs) and land uses in the Phase 6 Chesapeake Bay Watershed Model
Michigan Forestry Best Management Practices for Soil and Water Quality
Tackling Barriers to Green Infrastructure: An Audit of Local Codes and Ordinances
Guidance for Developing an Off-site Stormwater Compliance Program for Redevelopment Projects in Massachusetts
Monitoring Stream Restoration in Howard County, Maryland to Determine Effectiveness in Reducing Pollutant Loads
Pollutant Load Reduction Credit Tool
Center for Watershed Protection. 2017. Pollutant Load Reduction Credit Tool. Crediting Framework Product #4 for the project Making Urban Trees Count: A Project to Demonstrate the Role of Urban Trees in Achieving Regulatory Compliance for Clean Water. Center for Watershed Protection, Ellicott City, MD. The Center for Watershed Protection Developed a Pollutant Load Reduction Credit for tree planting. This national credit can be adopted by regulatory agencies who wish to offer a science-based credit that encourages greater use of tree planting for meeting total maximum daily load (TMDL) requirements. The Pollutant Load Reduction Credit Tool allows the user to calculate annual reductions in nutrients and sediment loads for an individual tree and for a tree planting scenario based upon this credit.
Constructing Stormwater Retrofits in Maryland: Challenges & Recommendations for Cost Estimation
Center for Watershed Protection. 2019. Constructing Stormwater Retrofits in Maryland: Challenges & Recommendations for Cost Estimation. Prepared for the Chesapeake Bay Trust. Center for Watershed Protection, Ellicott City, MD. 44 pages
Stormwater, retrofit, cost, TMDL
Maryland communities are poised to spend millions on stormwater retrofit implementation to meet stormwater permit and Chesapeake Bay total maximum daily load (TMDL) requirements. The available information on retrofit costs is highly variable and does not reflect the enormous amount of implementation that has occurred over the past five years. Reliable information is needed on the true costs of implementing stormwater retrofits, so that communities can better plan and budget for them and funders can direct their limited funds towards the most cost-effective practices. The goal of this study was to compile and analyze recent data on actual construction costs for stormwater retrofits across the state to develop a white paper that helps to fill the gaps in knowledge on stormwater retrofit costs. The following research questions were identified for this study: • What are the design and construction costs of stormwater retrofits? • How do these costs vary with BMP type, location, site conditions, or design features? • Which BMPs are most cost-effective for nutrient and sediment removal? • How do the final construction costs compare with the initial estimated project costs? • What are some lessons learned and challenges associated with these projects that affected the cost, timeline, and ultimate success of the project?