Chapter 6: Management Measures for Hydromodification: Channelization and Channel Modification, Dams, and Streambank and Shoreline Erosion Page: 2 of 110
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C. Scope of This Chapter
This chapter addresses three categories of sources of nonpoint pollution from hydromodification activities that affect
(1) Channelization and channel modification;
(2) Dams; and
(3) Streambank and shoreline erosion.
Each category of management measures is addressed in a separate section of this guidance. Each section contains
(1) the management measure; (2) an applicability statement that describes, when appropriate, specific activities and
locations for which the measure is suitable; (3) a description of the management measure's purpose; (4) the basis
for the management measure's selection; (5) information on management practices that are suitable, either alone or
in combination with other practices, to achieve the management measure; (6) information on the effectiveness of the
management measure and/or of practices to achieve the measure; and (7) information on costs of the measure and/or
practices to achieve the measure.
D. Relationship of This Chapter to Other Chapters and to Other EPA
1. Chapter 1 of this document contains detailed information on the legislative background for this guidance, the
process used by EPA to develop this guidance, and the technical approach used by EPA in the guidance.
2. Chapter 7 of this document contains management measures to protect wetlands and riparian areas that serve
an NPS pollution abatement function. These measures apply to a broad variety of sources, including sources
related to hydromodification activities.
3. Chapter 8 of this document contains information on recommended monitoring techniques to (1) ensure proper
implementation, operation, and maintenance of the management measures and (2) assess over time the success
of the measures in reducing pollution loads and improving surface water quality.
4. EPA has separately published a document entitled Economic Impacts of EPA Guidance Specifying Management
Measures for Sources of Nonpoint Pollution in Coastal Waters.
5. NOAA and EPA have jointly published guidance entitled Coastal Nonpoint Pollution Control Program:
Program Development and Approval Guidance. This guidance contains details on how State Coastal Nonpoint
Pollution Control Programs are to be developed by States and approved by NOAA and EPA. It includes
guidance on the following:
o The basis and process for EPA/NOAA approval of State Coastal Nonpoint Pollution Control Programs;
* How NOAA and EPA expect State programs to provide for the implementation of management measures"
in conformity" with this management measures guidance;
* How States may target sources in implementing their Coastal Nonpoint Pollution Control Programs;
* Changes in State coastal boundaries; and
* Requirements concerning how States are to implement the Coastal Nonpoint Pollution Control Programs.
6-2 EPA-840-B-92-002 Januaiy 1993
EPA-840-8-92-002 January 1993
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United States. Environmental Protection Agency. Chapter 6: Management Measures for Hydromodification: Channelization and Channel Modification, Dams, and Streambank and Shoreline Erosion, chapter, January 1993; (digital.library.unt.edu/ark:/67531/metadc948721/m1/2/: accessed February 23, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.