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Habitat Conservation Plan (HCP)
to support issuance of an Incidental Take Permit (ITP) for the Federally Endangered Lampsilis higginsii mussel and the candidate mussel species Plethobasus cyphyus related to operations of the Quad Cities Station (QCS)
Below is the "Executive Summary" and the "Introduction and Background." Go here for the complete 98-page PDF version of the HCP.
Exelon Generation (Applicant) has prepared this Habitat Conservation Plan (HCP) to fulfill requirements of Section 10 (a)(1)(B) of the Endangered Species Act to address the potential incidental take of two mussel species: Lampsilis higginsii (Higgins eye pearlymussel) and Plethobasus cyphyus (sheepnose mussel). Downstream of Exelon Generation’s (Exelon) Quad Cities Station (QCS) discharge is a mussel bed, commonly referred to as the Cordova Mussel Bed, which has been designated as one of the essential habitats for the Higgins eye pearlymussel. The U.S. Fish and Wildlife Service originally listed the Higgins eye pearlymussel as an endangered species on June 14, 1976 (Federal Register, 41 FR 24064). One specimen of sheepnose mussel (Plethobasus cyphyus), which is a candidate for federal listing, was recently collected in the Cordova mussel bed.
Based on recent discussions with U.S. Fish and Wildlife (USFWS) staff, the sheepnose mussel has been included in this Habitat Conservation Plan (HCP) because it is likely to be federally listed in the near future.
Exelon plans to apply for an incidental take permit (ITP) pursuant to section 10(a)(1)(B) of the Endangered Species Act of 1973 (16 U.S.C. 1531-1544, 87 Stat. 884) as amended, (ESA) from the USFWS for the potential incidental take of the Higgins eye mussels and sheepnose mussels.
The ITP will also serve to authorize Exelon intentional take of Higgins eye and sheepnose mussels associated with implementation of minimization measures (i.e., mussel collection and relocation associated with pre-activity surveys, thermal tolerance studies) and mitigation measures (see Section 5.4). The duration of the requested permit is 24 years.
This HCP describes measures that will be implemented by the QCS to minimize and mitigate potential impacts of three activities (Section 3.2): 1) implementation of an alternate thermal standard, 2) periodic maintenance dredging in front of the intake forebay, and 3) the removal of Edison Pier. This HCP also describes measures to ensure that elements of the HCP are properly implemented. Funding sources for implementation, actions to be taken for changed circumstances and unforeseen events, alternatives to the proposed project, and other measures required by USFWS are also addressed in this document.
Last updated: June 10, 2014