D. Management Measure for Construction Site
This management measure
is intended to be applied by States to new, resurfaced, restored, and
rehabilitated road, highway, and bridge construction projects in order to
reduce toxic and nutrient loadings from such project sites. Under the
Coastal Zone Act Reauthorization Amendments of 1990, States are subject to
a number of requirements as they develop coastal NPS programs in
conformity with this management measure and will have some flexibility in
doing so. The application of management measures by States is described
more fully in Coastal Nonpoint Pollution Control Program: Program
Development and Approval Guidance, published jointly by the U.S.
Environmental Protection Agency (EPA) and the National Oceanic and
Atmospheric Administration (NOAA) of the U.S. Department of Commerce.
The objective of this
measure is to guard against toxic spills and hazardous loadings at
construction sites from equipment and fuel storage sites. Toxic substances
tend to bind to fine soil particles; however, by controlling sediment
mobilization, it is possible to limit the loadings of these pollutants.
Also, some substances such as fuels and solvents are hazardous and excess
applications or spills during construction can pose significant
environmental impacts. Proper management and control of toxic substances
and hazardous materials should be the adopted procedure for all
construction projects and should be established by erosion and sediment
control plans. Additional relevant practices are described in Management Measure III.B of this chapter.
- Limit the application, generation, and migration of toxic
- Ensure the proper storage and disposal of toxic materials; and
- Apply nutrients at rates necessary to establish and maintain
vegetation without causing significant nutrient runoff to surface
management measure was selected because of existing practices that have
been shown to be effective in mitigating construction-generated NPS
pollution at highway project sites and equipment storage yards. In
addition, maintenance areas containing road salt storage, fertilizers and
pesticides, snowplows and trucks, and tractor mowers have the potential to
contribute NPS pollutants to adjacent watercourses if not properly managed
(AASHTO, 1988, 1991a). This measure is intended to safeguard surface
waters and ground water from toxic and hazardous pollutants generated at
construction sites. Examples of effective implementation of this measure
are presented in the section on construction in urban areas. Several State
environmental agencies are using this approach to regulate toxic and
hazardous pollutants (Florida DER, 1988; Puget Sound Basin, 1991).
As discussed more fully at the
beginning of this chapter and in Chapter
1, the following practices are described for illustrative purposes
only. State programs need not require implementation of these practices.
However, as a practical matter, EPA anticipates that the management
measure set forth above generally will be implemented by applying one or
more management practices appropriate to the source, location, and
climate. The practices set forth below have been found by EPA to be
representative of the types of practices that can be applied successfully
to achieve the management measure described above.
The practices that are applicable to this management measure are
described in Section III.B.
The detailed cost and effectiveness data presented in
the Section III.A of this chapter describing NPS
controls for construction projects in urban development areas are also
applicable to highway construction projects.
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