Climate Action and Sustainability Plan June 2021 | Page 123

For the U . S ., potential pest risk is based on pest range maps and the known pest host species that are likely to experience mortality . Pest range maps for 2012 from the Forest Health Technology Enterprise Team ( FHTET ) ( Forest Health Technology Enterprise Team 2014 ) were used to determine the proximity of each pest to the county in which the urban forest is located . For the county , it was established whether the insect / disease occurs within the county , is within 250 miles of the county edge , is between 250 and 750 miles away , or is greater than 750 miles away . FHTET did not have pest range maps for Dutch elm disease and chestnut blight . The range of these pests was based on known occurrence and the host range , respectively ( Eastern Forest Environmental Threat Assessment Center ; Worrall 2007 ).

Relative Tree Effects :

The relative value of tree benefits reported in Appendix II is calculated to show what carbon storage and sequestration , and air pollutant removal equate to in amounts of municipal carbon emissions , passenger automobile emissions , and house emissions .

Municipal carbon emissions are based on 2010 U . S . per capita carbon emissions ( Carbon Dioxide Information Analysis Center 2010 ). Per capita emissions were multiplied by city population to estimate total city carbon emissions .

Light duty vehicle emission rates ( g / mi ) for CO , NOx , VOCs , PM10 , SO2 for 2010 ( Bureau of Transportation Statistics 2010 ; Heirigs et al 2004 ), PM2.5 for 2011-2015 ( California Air Resources Board 2013 ), and CO2 for 2011 ( U . S . Environmental Protection Agency 2010 ) were multiplied by average miles driven per vehicle in 2011 ( Federal Highway Administration 2013 ) to determine average emissions per vehicle .

Household emissions are based on average electricity kWh usage , natural gas Btu usage , fuel oil Btu usage , kerosene Btu usage , LPG Btu usage , and wood Btu usage per household in 2009 ( Energy Information Administration 2013 ; Energy Information Administration 2014 )

• CO2 , SO2 , and NOx power plant emission per KWh are from Leonardo Academy 2011 . CO emission per kWh assumes 1 / 3 of one percent of C emissions is CO based on Energy Information Administration 1994 . PM10 emission per kWh from Layton 2004 .

• CO2 , NOx , SO2 , and CO emission per Btu for natural gas , propane and butane ( average used to represent LPG ), Fuel # 4 and # 6 ( average used to represent fuel oil and kerosene ) from Leonardo Academy 2011 .

• CO2 emissions per Btu of wood from Energy Information Administration 2014 .

• CO , NOx and SOx emission per Btu based on total emissions and wood burning ( tons ) from ( British Columbia Ministry 2005 ; Georgia Forestry Commission 2009 ).

I-Tree Report of Ecosystem Analysis at Mount Auburn Cemetery Insert to the Climate Action and Sustainability Plan

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