Simulation of Non-Structural BMP Performance Using Pollutant Buildup and Washoff Functions

$17.50 plus tax (Refund Policy)

Buy Article:

Abstract:

In densely developed urban watersheds, limited open spaces are available to construct structural Best Management Practices (BMPs); therefore implementation plans to meet Total Maximum Daily Loads (TMDLs) typically include recommendations for non-structural BMPs. Nonstructural BMPs reduce pollutant loads by either reducing or removing the source of a pollutant or by capturing built-up pollutants at or near their source before they can be washed off the land surface into the stormwater drainage system and downstream waterbodies. This paper presents an innovative analytical approach for estimating pollutant load reduction from non-structural BMPs by simulating buildup and washoff processes in urban watersheds. The non-structural BMPs included in the metals TMDL implementation plan for the Los Angeles River (LAR) target brake pads through vehicle product replacement, roadway sediment through street sweeping, and rooftop runoff through downspout disconnection. Historical flow gage date were used to estimate the buildup of metals from controllable sources prior to a storm event, as a function of preceding dry days, and wash-off of accumulated pollutant from the watershed surface, as a function of runoff event depth. Results showed that a large portion of total copper, total lead, and total zinc loads could be attributed to the three sources evaluated in this study, as can be seen in the box and whisker plots. Thus, implementation of non-structural BMPs is an important component in the implementation plan for the LAR metals TMDL.

Keywords: Brake Pads; Buildup; Downspout disconnection; Metals; Source control BMPs; Street sweeping; Washoff

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864710798193310

Publication date: January 1, 2010

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • ingentaconnect is not responsible for the content or availability of external websites

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more