Evaluation of Best Management Practices for Highway Runoff Control (2006) / Chapter Skim
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Pages 78-83
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78 9.1 Introduction The BMP selection and conceptual design methodology presented in this report is driven by well-defined stormwater management goals and a solid understanding of site characteristics, constraints, and water-quality conditions. As opposed to other design approaches that recommend the selection of typical BMPs based solely on documented performance factors such as percent removal, effluent quality and/or percent capture, the approach presented herein is to first select the unit treatment processes that address the pollutants of concern and stormwater management goals and then individually select the components of a BMP treatment system based on those unit processes.
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79 PROBLEM DEFINITION (Chapter 2) Site Characterization Data, and List of Target Pollutants, Refined Goals and Objectives Project Description (2.1)
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80 Figure 9-1. (Continued)
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81 PRACTICABILITY ASSESSMENT OF CANDIDATE TREATMENT SYSTEMS (Chapter 6) Physical and Social Constraints (6.1-6.7)
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82 candidate BMPs for a site is not a decision based specifically on performance or hydrologic measures, but rather on feasibility of design, installation, and implementation.A variety of factors exist that must be taken into account by engineers when initially selecting a particular BMP system design to pursue, including performance for target pollutants, hydrology and hydraulics, surface and subsurface space availability, maintenance, costs, and aesthetics.Other factors include safety, regional constraints, downstream impacts, land use allocations, safety and human health concerns, regional and climatic concerns, and overall project budget (cost considerations)
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83 regulatory, and research goals. Monitoring goals are often focused on the achievement of objectives (including hydrology/hydraulics and water quality)
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