Much emphasis is currently placed on controlling storm water pollution by attacking the problem at the source, instead of using more costly downstream treatment facilities. These source controls, termed "Best Management Practices" (BMPs), are judged most effective in reducing nonpoint source pollution to a level compatible with water quality goals.
Best Management Practices are classified into two groups:
• Planning, with efforts directed at future development and redevelopment of existing areas
• Maintenance and operational practices to reduce the impact of nonpoint source contamination from existing developed areas
Successful storm water pollution control depends on the effective implementation of proposed planning efforts and/or control practices. Legislation or ordinances encouraging or requiring conformance with intended BMPs has proven to be effective. Table 9.21.1 lists activities included in a typical source control program.
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