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Supplemental Environmental Assessment, Fiscal Years 2012 through 2018: South Jetty Breach Fill Maintenance, Westport, Grays Harbor County, Washington
| 题名： | Supplemental Environmental Assessment, Fiscal Years 2012 through 2018: South Jetty Breach Fill Maintenance, Westport, Grays Harbor County, Washington |
| 作者： | empty |
| 关键词： | Environmental impact##Sand##Maintenance##Breakwaters##Inlets##Losses##Sediments##Shore protection##Site investigations##Thresholds##Jetties##Grays Harbor County(ashington)## |
| 摘要： | In accordance with the National Environmental Policy Act (NEPA), this document supplements the February 2004 South Jetty Breach Fill Maintenance Final Environmental Assessment, as well as the EA Supplements dated December 2004, November 2005, and July 2010. Those documents evaluated the impacts of placement of sand on the South Jetty breach fill in 2004, 2005, and 2010. This Supplemental EA maintains the approach of utilizing action triggering thresholds that, if met, would prompt prescribed response measures. These triggering criteria were met in 2009, and responsive action last undertaken in 2010. Although the evaluation presented in the 2004, 2005, and 2010 NEPA documents have since expired, the Corps proposes to continue applying the triggering approach described therein. The purpose of this document is to describe the actions and effects of those actions that might occur in the event that conditions meet prescribed triggering thresholds that would prompt response measures over the next seven fiscal years (FY) (FY12 through FY18), as needed. This Supplemental EA identifies two specific and objectively measurable site condition thresholds, assessing degree of sand loss that would trigger responsive actions. This document also specifies a range of responsive actions that would be taken if either of the triggering thresholds is met, and assesses the environmental impacts of that responsive action. |
| 总页数： | 86 |
| 报告类型： | 科技报告 |
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