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12 A Handbook for Addressing Water Resource Issues Affecting Airport Development Planning The objective of implementing this cyclical, iterative approach is to identify and address issues continuously throughout the project implementation process, making incremental changes as necessary to keep the project on track and on budget. Using this method should reduce the potential for unexpected, large-scale disruptions to the project schedule and lessen the likelihood of costly project design revisions late in the project. 1.3.4 Overview of Guidance in Water Resource Issue Fact Sheets Appendix B contains a series of fact sheets on seven water resource issue categories. The cate- gorization was derived primarily from similarities in impacts from development projects, sim- ilarities in the measures that are typically taken to mitigate for impacts to the water resources, and commonalities in the regulatory requirements. It is important for planners and develop- ment project management to understand that project impacts must be understood, even in early planning stages, from the standpoint of the individual water resource issues. Each issue may have its own unique set of regulatory requirements, and compliance with those require- ments may have its own unique effect on the project--for example, the presence of wetlands on a potential development site can affect the ability to site that project. On the other hand, water quality-based impacts may have relatively little effect on the ability to site a project at the desired location, but could require land in other locations at the airport for storm water storage and treatment. Each fact sheet provides a detailed approach to managing the process of complying with reg- ulatory requirements for a specific water resource issue within the context of a development proj- ect. The fact sheets include information to promote a general awareness of the issue, summary of applicable regulations, and planning considerations drawn from industry experience on man- agement of the water resource issue within the context of development projects. The fact sheets have four sections, each designed to help readers understand a different aspect of the water resource issue management process: 1. Description of water resource issue and impacts, 2. Identification of core regulatory requirements, 3. Determination of the measures needed for compliance, and 4. Reduction of water resource issue effects on development projects. The level of detail in each fact sheet presented in Appendix B may be most appropriate for environmental professionals or others who will be preparing materials for compliance and for the project team by providing detailed assessments of potential impacts of compliance on proj- ect design, layout, schedule, costs, and operation. To facilitate the understanding of the water resource issue for those who do not need the level of detail presented in Appendix B, a summary of key information for each water resource issue category is presented at the end of this section. The summaries focus on guidance obtained from industry experience on considerations for reducing project impacts associated with each particular water resource issue.