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Implementation of San Diego regional sediment management objectives in the city of Encinitas, California

机译:在加利福尼亚州恩西尼塔斯市实施圣地亚哥区域沉积物管理目标

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摘要

A Coastal Regional Sediment Management (CRSM) Plan was prepared for the San Diego region that specifies regional approaches to renourish beaches to offset sediment loss. The CRSM offers alternatives that consist of nourishment from multiple small "opportunistic" sand projects, as well as large-scale nourishment projects using offshore sources of sand (Moffatt & Nichol et al. 2009). Opportunistic beach fill projects (OBFPs) refers to projects whose sediments are derived as a surplus material from upland development or wetland restoration projects. OBFPs have in the past been an impractical source of sand to the beach due mostly to timing associated with acquiring regulatory approvals for the projects. The city of Encinitas, as well as a number of other coastal cities in the San Diego region, has acquired program-level permits from these agencies in order to streamline the approval of OBFPs. The permits outline a number of pre-determined criteria regarding material quality, annual quantity, placement types, construction methods and monitoring requirements. The city of Encinitas has been the first city in San Diego to utilize these permits for the purposes of an individual project. This article details and provides lessons learned from the construction of two OBFPs within the city of Encinitas.
机译:为圣地亚哥地区准备了沿海区域沉积物管理(CRSM)计划,该计划规定了采用区域性方法补充海滩以抵消沉积物流失。 CRSM提供的替代方案包括多个小型“机会主义”砂项目的营养,以及使用近海砂源进行的大规模营养项目(Moffatt&Nichol等,2009)。机会性海滩填充项目(OBFP)是指其沉积物从陆上开发或湿地恢复项目中作为剩余物质获得的项目。过去,OBFP一直是通往海滩的不切实际的沙子来源,这主要是由于与项目的监管批准有关的时间安排。恩西尼塔斯市以及圣地亚哥地区的许多其他沿海城市,已经从这些机构获得了计划级别的许可,以简化对OBFP的批准。许可证概述了有关材料质量,年度数量,放置类型,施工方法和监控要求的许多预定标准。恩西尼塔斯(Encinitas)市是圣地亚哥第一个将这些许可证用于单个项目的城市。本文详细介绍了恩西尼塔斯市两个OBFP的建设,并提供了一些经验教训。

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