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REV: 06-17-2021 SK <br />Energy recovery desiccant dehumidification unit for <br />the Main NHL rink - Approximately 10,000 CFM, 1100 <br />MBH natural gas heating. <br />Energy recovery desiccant dehumidification unit <br />for the Studio rink - Approximately 5,000 CFM, <br />250 MBH natural gas heating. <br />Energy recovery exhaust ventilator for locker rooms - <br />Approximately 5,000 cfm, 17.5 tons cooling, 150 MBH <br />natural gas heating. <br />Infrared upper seating heating – (2) 60 foot, 175 MBH gas heating each. <br />Consultant will conservatively assume that the equipment listed above <br />would operate 24 hours a day, seven days a week, unless specific <br />information on usage levels for each equipment is provided. Consultant will <br />retain the emissions previously estimated in the Draft EIR. <br />Data Needs: <br />a) Specific information on usage levels for each HVAC equipment <br />previously identified by the potential ice rink operator. <br />C.Greenhouse Gas Emissions / Energy. GHG emissions associated with the <br />operation of the proposed ice rink would be generated from the following <br />sources: <br />Mobile emissions from the increase in vehicle traffic to the Project <br />site. Similar to criteria pollutant emissions (described above), Consultant <br />will rely on trip generation and VMT estimates from the traffic consultant <br />and either modify the CalEEMod run for Draft EIR or use EMFAC2021 to <br />estimate change in emissions. <br />Data Needs: Same as for Air Quality. <br />Emergency Generators. Consultant will estimate GHG emissions from <br />any proposed emergency generators using U.S. EPA’s AP-42 emission <br />factors. <br />Data Needs: Same as for Air Quality. <br />Energy Use. Operation of the ice rink use would involve energy use <br />associated with freezing and maintaining the ice rink, space and water <br />heating costs associated with the building, lighting, and water use. <br />Consultant will assess specific GHG emissions from energy sources as <br />follows: <br />o Electricity use associated with the electrical components of the <br />HVAC system will be estimated using annual electricity usage rate <br />for the facility provided and PG&E’s most recent carbon intensity <br />factor from their Corporate Responsibility and Sustainability Report <br />ATTY/AGR.2021/Amend No. 4/Environmental Science Associates (ESA) (Page 7 of 9)