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首页> 外文会议>CDS Report no.377; Western Dredging Association 24th Technical Conference and 36th Texas Aamp;M Dredging Seminar; 20040706-09; Orlando,FL(US) >REGULATORY APPROACH TO MEETING WATER QUALITY REQUIREMENTS DURING IN-WATER WORK
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REGULATORY APPROACH TO MEETING WATER QUALITY REQUIREMENTS DURING IN-WATER WORK

机译：满足室内工作水质要求的监管方法

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This paper describes a regulatory approach to meeting water quality requirements during in-water work using project-specific information. The process includes developing a Water Quality Management and Monitoring Plan (WQMMP) to be incorporated into the Clean Water Act Section 401 Water Quality Certification (WQC). The WQMMP allows for the proposed in-water work to be achieved while being protective of aquatic species and their habitats. In-water work can include dredging, dredged material management, marine construction, and capping. In-water work is typically regulated under the Rivers and Harbors Act of 1899 and the Federal Water Pollution Control Act of 1972 amended in 1977, commonly known as the Clean Water Act (CWA). As required under the CWA Section 401, a WQC must be obtained from the State where in-water work will be performed. Most requirements specified in the WQC are achievable using best management practices (BMPs). Included in most WQCs are state-wide turbidity standards, which can be very difficult or impossible to achieve, although the work could be performed without posing a threat to the local ecological receptors. Water quality requirements are generally developed to be protective of water bodies throughout the State; that is, water quality standards must be protective of water bodies ranging from the smallest and most vulnerable to the largest and most resilient. Therefore, in-water construction projects, such as dredging, that might be performed in a large waterway would need to meet stringent statewide requirements. Many states have regulatory capacity to consider incorporating project-specific conditions into the WQC. Project-specific conditions often allow for the development of an effects-based turbidity threshold, specifically designed to be protective of individual aquatic species. Given the limitations of state turbidity standards, turbidity thresholds that are based on a dose-response model of anticipated effects can be less stringent than state standards. The model used was the first of six described in Newcombe and Jensen (1996). These predictive models can be updated as needed to include the most recent and appropriate science. The resulting project-specific turbidity thresholds, used in conjunction with prudent BMPs, can protect sensitive aquatic resources, satisfy regulatory statutes, and allow for a productive project.
机译：本文介绍了一种监管方法，该方法使用特定于项目的信息来满足水下工作期间的水质要求。该过程包括制定《水质管理和监控计划》（WQMMP），以将其纳入《清洁水法》第401节水质认证（WQC）。 WQMMP可以在保护水生物种及其栖息地的同时实现拟议的水下工作。水下工作可包括疏ging，疏material材料管理，海事建筑和封盖。水中工作通常受1899年《河流和港口法》和1977年修订的1972年《联邦水污染控制法》（通常称为《清洁水法》（CWA））监管。根据CWA第401节的要求，必须从将在水中进行工作的州获得水质认证。使用最佳管理规范（BMP）可以实现WQC中指定的大多数要求。大多数WQC都包括全州范围的浊度标准，尽管很难在不对当地生态受体构成威胁的情况下进行工作，但很难或不可能实现。通常制定水质要求以保护整个州的水体；也就是说，水质标准必须保护从最小，最易受伤害的水体到最大，最有弹性的水体。因此，可能在大型水道中进行的诸如挖泥之类的水上建筑项目将需要满足全州的严格要求。许多州具有监管能力，可以考虑将项目特定条件纳入WQC。项目特定条件通常允许制定基于效果的浊度阈值，该阈值专门设计用于保护单个水生物种。鉴于州浊度标准的局限性，基于预期效果的剂量反应模型的浊度阈值可能不如州标准严格。使用的模型是Newcombe和Jensen（1996）中描述的六个模型中的第一个。这些预测模型可以根据需要进行更新，以包括最新和适当的科学。由此产生的特定项目的浊度阈值与审慎的BMP结合使用，可以保护敏感的水生资源，满足法规要求并允许进行生产性项目。

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