Wetland Mitigation, Volume 2, A Guidebook for Airports (2019) / Chapter Skim
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Pages 60-67
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From page 60... ...
60 6.1 Introduction Mitigation projects can vary significantly depending on the type and quantity of impacts to the wetland, as well as the engineering and design elements. This chapter focuses on the planning and engineering/design issues associated with permittee-responsible on-site and off-site restoration, creation, and enhancement.
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From page 61... ...
Engineering and Design Issues 61 For permittee-responsible mitigation, the mitigation plan should be developed with the assistance of environmental professionals to maximize the chances of hydrologic and ecological success. For use of non-airport–owned lands for mitigation, real estate services are also usually required and may become a critical-path effort to secure a site within a time frame that does not compromise project objectives.
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From page 62... ...
62 Wetland Mitigation, Volume 2: A Guidebook for Airports Source: FAA Advisory Circular 150/5200-33B, Hazardous Wildlife Attractants On or Near Airports Figure 6-1. FAA-identified separation distances from an AOA.
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From page 63... ...
Engineering and Design Issues 63 6.4 Site Selection and Real Estate Acquisition The elements that usually exert the most control over a mitigation schedule are site selection and real estate acquisition. Timely acquisition is the key to moving forward with any mitigation site outside the current airport boundary.
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From page 64... ...
64 Wetland Mitigation, Volume 2: A Guidebook for Airports Water rights are important to consider in parts of the country, particularly the West and Southwest. If proposed mitigation requires use of water (including storing, exposing groundwater table, etc.)
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From page 65... ...
Engineering and Design Issues 65 local water sources contribute to the hydrology of a site, also critical if creation is being considered. These local sources range from runoff to over-bank flooding from nearby streams to groundwater, etc.
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From page 66... ...
66 Wetland Mitigation, Volume 2: A Guidebook for Airports sediment. Generally, the long-term viability of the site is greater if the use of artificial structures that produce backwater effects such as dikes, impoundment berms, and flash board weirs are avoided.
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From page 67... ...
Engineering and Design Issues 67 6.7 Construction Wetland mitigation projects require qualified professionals during both design and construction. On-site airport representatives must have a clear understanding of the mitigation design and ultimate function.
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