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FAST-TRACK DESIGN TO EXPEDITE LAKE OKEECHOBEE AND EVERGLADES RESTORATION

机译：快速通道设计可加快OKEECHOBEEE湖和沼泽地的修复

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The Lake Okeechobee Fast Track (LOFT) phosphorous reduction project is part of the Northern Everglades program. A key component of the program is the Lakeside Ranch Stormwater Treatment Area (LRSTA), which is a constructed wetland for phosphorus removal. CDM is providing design and construction oversight of the emergent-vegetation STA. The LRSTA project has proceeded on a fast-track schedule despite significant design constraints and is currently in the first phase of construction.rnPrevious STA projects constructed south of Lake Okeechobee were built on sites with only minor topographic relief. However, the Lakeside Ranch property has a 13-foot elevation change across the site. The final design accommodated the topography, along with other environmental and economic constraints, by utilizing an intricate system of canals, ditches, and hydraulic structures to distribute flows evenly across the STA. After eagles' nests and cultural resources were identified in a central area bisecting the site, the STA had to be designed for construction in two phases.rnThe design of the embankments, seepage collection ditches, and seepage control measures needed to address the local site geology while maintaining a low-height embankment that is not classified as a dam in order to avoid costly upgrades to the system design.rnConstruction of the first phase started in April 2009 and is scheduled to be completed in January 2012. The second phase will be advertised late 2010 and completed on a similar schedule as the first phase.rnThis fast-track timeframe was driven by a need to implement the Northern Everglades program and to realize the environmental benefits as quickly as possible. This paper discusses the innovative design concepts and analysis techniques that were used to develop a practical and cost-effective project despite the scheduling, physical, and regulatory constraints.
机译：奥基乔比湖快速通道（LOFT）减少磷项目是北部大沼泽地项目的一部分。该计划的关键组成部分是湖滨牧场雨水处理区（LRSTA），这是一个人工除磷湿地。 CDM正在提供对紧急植被STA的设计和施工监督。尽管存在严重的设计限制，LRSTA项目仍按快速进度进行，目前处于施工的第一阶段。rn奥基乔比湖以南的先前STA项目建在地形地形较小的地点。但是，Lakeside Ranch属性在整个站点上的高度变化为13英尺。最终设计通过利用复杂的运河，沟渠和水力结构系统在STA上平均分配流量，从而适应了地形以及其他环境和经济限制。在将场地平分的中心区域确定了鹰巢和文化资源后，必须分两个阶段设计STA。rn设计堤坝，渗流收集沟和防渗措施以解决当地地质问题同时保留一个不属于大坝的低矮路堤，以避免对系统设计进行昂贵的升级。rn第一阶段的建设于2009年4月开始，计划于2012年1月完成。第二阶段的建设将进行广告宣传2010年下半年，并按与第一阶段相似的时间表完成了。rn这一快速的时间表是由于需要实施北部大沼泽地计划并尽快实现环境效益而产生的。本文讨论了创新的设计概念和分析技术，这些技术和分析技术可用于尽管时间安排，物理和法规限制仍可开发实用且具有成本效益的项目。

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