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Treatment BMPs Chapter 4
2.0 Treatment BMP Fact Sheets
Fact sheets for each treatment BMP are provided as stand-alone sections of this chapter. The Fact Sheets
are numbered with a "T" designation, indicating "Treatment" BMP. Fact Sheets typically include the
following information:
• Description: Provides a basic description of the BMP.
• Site Selection: Identifies site-specific factors that affect the appropriateness of the BMP for the site.
• Designing for Maintenance: Identifies maintenance-related factors that should be considered during
the BMP selection and design phase.
• Design Procedure and Criteria: Provides quantitative procedures and criteria for BMP design.
• Construction Considerations: Identifies construction-phase related factors that can affect long-term
performance of the BMP.
• Design Example: Provides a design example corresponding to the UDFCD design spreadsheets
accompanying this manual.
Designers should review each section of the Fact Sheet because successful long-term performance of the
BMP includes all of these considerations, not simply the design procedure itself. Additionally, some Fact
Sheets include call-out boxes with supplemental information providing design tips or other practical
guidance that can enhance the benefits and performance of the BMP.
As part of the 2010 update of this manual, underground BMPs were added as treatment BMPs. UDFCD
does not provide endorsement or approval of specific practices; instead, guidance is provided identifying
when use of underground BMPs may be considered and the minimum criteria that should be met when
site constraints do not enable aboveground treatment of runoff or when underground devices are used to
provide pretreatment for site-specific or watershed-specific purposes.
4-2 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3