’—» NORMANDEAU City of Nashua
FAFE ASSOCIATES June 18, 2019
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ENVIRFONMENTAL CONSULTANTS Page 9
e The assessment of impingement, entrainment, and survival of diadromous species will be conducted
as a desktop analysis.
e The potential for impingement or entrainment will be characterized based on the relationship of site-
specific intake characteristics along with swim speed and life history characteristics of target fish
species.
e Site-specific factors likely to influence the potential for entrainment include intake location relative to
shore and littoral habitat; depth of Project intakes; degree of water level fluctuations; hydraulic
Capacity; water quality; and intake velocities.
e Entrainment survival of juvenile and adult alosines will be estimated using data from survival studies
conducted at other hydroelectric facilities with similar characteristics [e.g., (EPRI, 1997); (Winchell,
2000)], and the Franke blade strike probability equation (Franke, 1997).
e Survival of adult eels will be estimated using the multiple linear regression models (Alden, Assessment
of Fish Entrainment, Impingement, and Turbine Survival at Holyoke Nos. 1, 2, and 3, 2017).
e Total project downstream passage survival will be characterized for adult and juvenile American shad
and alewife, and adult American eels considering the turbine passage survival estimated in this study
and any available proportional route selection data collected in the studies mentioned above.
Schedule and Estimated Cost: The desktop impingement/entrainment assessment should be conducted soon
after resource agency review of the PSP and issuance of the RSP. The estimated cost for the effort as described
here is $16,184.00.
3) Study Reports and Draft Application: Each aquatic resource study eventually agreed upon by the City
and the natural resource agencies will be conducted following the methodology summarized in the
RSP. At the completion of each study, Normandeau will prepare a summary report which provides an
overview of the goals and objectives, methodology and key results for each study. These draft reports
will be distributed to the natural resource agencies for review and Normandeau will coordinate a one-
day stakeholder meeting to review each study and address agency questions. Following review and
consideration of comments received on the draft reports, Normandeau will incorporate pertinent
comments and responses and provide a finalized set of study reports.
With regards to preparation of the Draft License Application (DLA), we have assumed that the City will
take an active role in that effort as participation will help to reduce the overall cost of the relicensing
effort. In particular, the City will take the lead on preparation of Exhibits B, C, D, G and H since staff
there have access to the detailed information required in those Exhibits. We will review and advise
the City on the content of those Exhibits to ensure that they are complete and will meet FERC
requirements and expectations. As part of the DLA effort, the Normandeau team will prepare the
Initial Statement, and Exhibits A, E, and F in accordance with FERC regulations and as stipulated in
FERC’s guidance document, Managing Hydropower Project Exhibits (FERC 2014).
A preliminary schedule of the timing of proposed studies and activities associated with the Mine Falls
relicensing process is included below in Figure 1 and was established based on an assumed contract issuance
