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Over the past decade, the Project Team has determined that many users of the database are interested in the bottom-line on BMP performance and that there are frequently asked questions regarding specific subsets of data. This page enables downloads of a variety of summary information on BMP performance, along with custom database queries providing summary information on frequently asked questions. If you have a specific question that you would like to ask, please contact us.
 
Document Summary (PDF) Description
 2011 Solids Technical Paper and Statistical Summary This technical summary addresses these topics:
• Solids data in the BMP Database for TSS, TDS and turbidity
• Regulatory context and sources
• Fate and transport processes, removal mechanisms and associated BMP
  design considerations for solids
• Overview and analysis of solids data in the BMP Database
• Conclusions and recommendations

2011 Metals Summary (Aug 2011)
Metals Statistical Summary Attachment (Aug 2011)

Provides a technical summary and statistical analysis of metals data in the BMP Database.

2010 Bacteria Technical Paper and Spreadsheets This technical summary addresses these topics:
• Regulatory context for pathogens in receiving waters
• Sources of pathogens and fecal indicator bacteria
• Fate and transport processes, removal mechanisms and associated BMP 
  design considerations for fecal indicator bacteria and pathogens
• Overview and analysis of fecal indicator bacteria included in the International
  Stormwater BMP Database (BMP Database)
• Conclusions and recommendations
• Open Excel spreadsheet of data set used in analysis
2010 Nutrients Technical Paper and Spreadsheets (plus Attachment 1) This technical summary addresses these topics:
• Regulatory context for nutrients in receiving waters
• Sources of nitrogen and phosphorus
• Fate and transport processes, removal mechanisms and associated BMP
  design considerations for nitrogen and phosphorus
• Overview and analysis of nitrogen, phosphorus, and organic carbon data
  included in the International Stormwater BMP Database (BMP Database)
• Conclusions and recommendations
• Open Excel spreadsheet of data set used in analysis
• Categorical BMP statistical summary report (Attachment 1)
2010 Volume Reduction Technical Paper and Spreadsheets This technical summary addresses these topics:
• Regulatory context for volume reduction
• Inventory volume data
• Recommended uses of volumetric data and limitations of uses
• Categorical analysis of volumetric data
• Advanced analysis of volumetric data
• Conclusions and recommendations
• Open excel spreadsheet of data set used in analysis (attachment 1)
2010 Volume Reduction Analysis The purpose of this technical memorandum is to recommend ways to interpret and evaluate hydrologic data obtained from monitoring studies to quantify the performance of these systems, both absolutely and in comparison to other systems.
New! Table of Performance by BMP Category and Common Pollutant Type This 1-page tabular summary provides the median influent and effluent event mean concentrations, 95th percentile values and number of studies by commonly reported constituent and BMP category. Updated November 2011.
Table of BMPs by State 2011 This 1-page table provides the numbers of various BMP types included in the database by state.  Updated November 2011.
Summary of Cost Data (2007) This spreadsheet summarizes the cost data currently included in the database. Provision of cost data is optional for data providers and is an on-going data need.
Summary of Non-structural BMP Data (2008) This Excel file summarizes non-structural BMP data currently included in the database. Additional non-structural performance data are needed; existing data are primarily derived from the National Urban Runoff Program (NURP).
List of Data Providers (2007)
Studies Removed from the BMP Database in 2009

This table provides a list of data providers and the number of studies that they have provided to the database. A statement regarding studies removed from the database in 2009 is also provided.