Project Name: Mount Tom 316(b) Compliance
Summary: Biological studies for EPA 316(b) compliance
Client: Northeast Generation Services
Project Location: Holyoke, MA
- Agency Consultation
- Impingement and Entrainment Study
- Permit Compliance
Project Timeframe: 2005 - 2010
Relationship with Client: Since 2005
The Mount Tom Generating Station (MTS) is a 147 MW coal-fired steam electric plant located on the Connecticut River just north of Holyoke, Massachusetts. Northeast Generation Services (NGS) was required to conduct biological studies as well as prepare documents associated with 316(b) compliance.
Kleinschmidt prepared the Proposal for Information Collection (PIC) for the station and the 40 CFR 122.21 reports required by the 316(b) Phase II Rule. The PIC evaluated the applicability of the new rule to the station and identified possible 316(b) credits for existing measures already in place to minimize impingement mortality, such as the electric fish barrier and fish return system. Since impingement at MTS had not been studied since the 1970s the PIC provided a scope of work to assess current annual impingement rates, as well as the potential survival of fish following impingement. Kleinschmidt conducted a two-year impingement study including weekly sampling spanning a 24-hour period. To further investigate the current impacts of water withdrawal at MTS, Kleinschmidt also conducted a two-year entrainment study, with weekly sampling from March through September and bi-weekly sampling from October through September. The data generated by the entrainment and offshore samples from within the Connecticut River were used to calculate an accurate estimate of entrainment impacts at MTS. Kleinschmidt was also contracted to update certain information submission requirements for MTS, related to the Station’s application for reissuance of its National Pollutant Discharge Elimination System (NPDES) permit, including an assessment of available technologies and operational measures with the potential to reduce station Impingement & Entrainment (I&E) impacts.
Kleinschmidt, working with station staff, was able to identify operational changes that would reduce entrainment to acceptable levels thereby eliminating the need for any new construction.