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If such a determination reveals that material resale and/or reuse is practical, the properties of the dredged material must then be demonstrated to satisfy the requirements of commercial interests . The coarsest fraction of material (sand and gravel), having been partially segregated through differential settling, can likely be used as is . However, the feasibility of compartmentalized segregation of material during dredging or mechanical separation following dewatering should be explored if market conditions dictate. Portions of the material determined to be unsuitable for fill or other construction purposes because of organic silt or clay content might be used for landfill capping or agricultural purposes . A determination that resale or reuse is unfeasible will dictate locating and developing a centralized permanent storage facility. The appropriate location for such a facility would appear to be inland where lower real estate values and development potential make permanent storage more economically feasible . The optimal distance from the initial containment area to the permanent storage site would represent a compromise between lower land costs and higher transportation costs . 4. 4 Additional Environmental Considerations 4. 4. 1 Biological Monitoring A primary consideration in the design and operational guidelines for Site IR- 14 is the intent to limit adverse impacts to those directly related to construction of the dredged material management facility . Notwithstanding the above, additional biological monitoring will be required within the buffer zone which lies outside the containment area. A biological monitoring program , which may be extended to the proposed pipeline route as well as the immediate vicinity of the site , may include the following elements . If required to update existing information, an environmental survey of these areas will be performed before site construction to establish current baseline habitat conditions and population densities . Periodic resurveys should then continue throughout the service life of the site. Impacts to local habitat resulting from site construction oroperation should be noted, corrective actions taken , and guidelines developed to avoid similar consequences . Similarly, beneficial aspects of site management should be recognized and encouraged, and the lessons learned should be applied to the future operation of this and other comparable dredged material management areas . 40