1. Capstone Presentation: 2016 and 2017 UNC Greenhouse Gas Inventories
12/3/2018
Capstone Presentation: and UNC Greenhouse Gas Inventories
Matt Bravante
David Herskowitz
Shalini Sharma
Eric Fitch
Heyward Lathrop
Emma Tobin
Kojo Minta
Jintong Wu
Sam Blank

2. Our project had two major phases:
THeasdf
Project Overview
Over the course of this semester, our team created a greenhouse gas inventory for 2016 and 2107
Our project had two major phases:
 Phase 1: Collect and calculate an inventory of greenhouse gas emissions produced directly an indirectly by UNC's campus in 2016 and 2017
Phase 2: Use the inventory trends and data analysis to create recommendations on how to mitigate future emissions

3. Definition of Scopes Scope 1 Direct emissions
Scope is a term used in greenhouse gas inventories to compartmentalize the different types of emissions. 
Scope 1
Direct emissions
Generators, Cogeneration Plant
Scope 2
Purchased Electricity
Scope 3
Indirect emissions
Commuting, waste, food etc.

4. Results of the project Total Greenhouse Gas Emissions:
2017: 419, Metric Tons of CO2 Equivalents
2016: 418, Metric Tons of CO2 Equivalents 
Since 2013, University emissions have decreased 16%.

5. Campus Cogeneration Plant Switchgear Gas Emissions
Scope 1 Emissions
Vehicle Fleet
The vehicle fleet is operated separately by department
The vehicle fleet is a small part of the overall emissions on campus
Campus Cogeneration Plant
Produces steam and electricity for the hospital and university
Burns fossil fuels to create energy
Responsible for over 60% of the university's emissions
Switchgear Gas Emissions
All switches on campus use Sulfur Hexafluoride (SF6) in their chambers. 
SF6 has a global warming potential of 23,900
One pound of SF6 would be the equivalent of 23,900 pounds of CO2

6. Purchased Electricity: Purchased Electricity:
Scope 2 Emissions 
This category calculate the indirect carbon emissions results from UNC's Electricity purchase from Duke Energy, excluding the electricity UNC sold to UNC hospital.
2016
Purchased Electricity:
404,015,224 kWh
Metric Tons Emitted:
110,009 MT CO2
Carbon Intensity:
.33
MT CO2/MWh
2017
Purchased Electricity:
385,493,928 kWh
Metric Tons Emitted:
99,241 MTCO2
Carbon Intensity:
.31
MT CO2/MWh

7. Scope 3 Emissions Commuting Air Travel Solid Waste
Includes 62% of Chapel Hill Transit, and all other emissions associated with commuters
31,545 MT CO2e in 2017, up from 28,425 in 2013 
Air Travel 
Study abroad and other university-associated flights contribute over 20,000 metric tons of carbon dioxide to the university footprint
Solid Waste
Landfilled waste adds to emissions, while recycling and composting counted as negative emissions 
In 2017, net emissions from solid waste were – MT CO2e
Waste is broken down into 13 categories

8. Scope 3 Emissions Upstream Natural Gas Paper Usage
UNC use Natural Gas for boiler in the steam plants
Upstream Natural Gas Emissions are emissions generated in the NG production system, leaks along the way, and direct combustion.
It also includes activities such as venting and flaring of methane during well completion and leaks.
Paper Usage
 Paper Consumption causes emissions from the depletion of forestry and the production of the paper. 
The university purchases most of its paper products from Staples
Different types of paper have different emission factors based on its composition of virgin and recycled paper product.

9. Scope 3 Emissions Urban Forestry Landscaping Carolina Dining Services
Held constant to data from a 2012 capstone – 6,120 tons CO2 sequestered by trees on UNC campus 
Landscaping 
Calculated nitrogen emissions of every non- herbicide applied on campus grounds
Carolina Dining Services
Beef and cheese consumption are the two largest food group emitters. Our analysis suggests that modifying the CDS order composition could reduce CDS GHG emissions by over 20%

10. Mitigation Measures \ LED light transition
 More energy efficient alternative to normal, cheaper, less money spen
Get all buildings onto automation system
95% of buildings are on system, 5% on nomadic controls
Expand "events to HVAC" program 
Currently exists in union, could be in all buildings that hold events
Retrofit OWASA with a biogas generator
Feasibility needs to be explored, but  the potential to power and heat the university is there
Reduce consumption of beef and cheese on UNC Campus
Our proposed plan could make achievable modifications in these categories while reducing CDS emissions by 20%

11. Mitigation Measures \ Switch the SF6 used in switchgear for G3 gas
Switching out this gas could save UNC Metric Tons of CO2 equivalents every year.
Incentivize departments to invest in electric vehicles
Switching to Electric Vehicles is an easy way to reduce CO2 emissions at a small marginal cost.
Increase biogas usage at Cogen
Switch coal as the primary source to biogas or biodiesel, both which burn much more clean
"Green-certified" buildings and dorms 
Implemented by many colleges, each resident must meet certain criteria for an eco-friendly room, those that comply get a prize
Rooftop Solar
There are multiple buildings, such as Davis library, that could support a large rooftop solar installation. 

12. Thank you, Questions