CDPHE Colorado Greenhouse Gas Inventory Update
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Transcript of CDPHE Colorado Greenhouse Gas Inventory Update
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7/30/2019 CDPHE Colorado Greenhouse Gas Inventory Update
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COLORADO GREENHOUSE GAS
INVENTORY UPDATE PROJECT
CDPHE
Theresa Takushi
Jim Dileo
Steven ArnoldGarry Kaufman APCD Greenhouse Gas Inventory Update April 2013
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Goals
APCD Greenhouse Gas Inventory UpdateApr2013
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Produce an updated, default inventory with 2020projection by March 2013
Produce a workbook for future inventories
Phased approach 5XQPRGHOLQIXOOGHIDXOWPRGHDQGHVWDEOLVKEDVHOLQH
Document results and put in context RI&8HYDOXDWLRQ
RILQWHUQDODVVHVVPHQW
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Rerun modules with improvements and compare
Consider black carbon assessment
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1990 CAA Provides Direction
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1993 EPA issues grants to States to
begin work on GHG inventories
1998 Colorado GHG report
completes the second phase of thegrant process
Electric Vehicle test program
implements third phase of grant Additional updates based via
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Accomplishments
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Three previous State inventories, plus updates Two in-KRXVHVXVLQJ(3$ZRUNERRN
approach, a 2000 update and a 2002 forecast
WGA/WRAP/CCS 2007 update using EPA SITmodel and other processes
Used 1990, 2000, 2005, 2010, 2020 Used EPA State Greenhouse Gas Inventory Tool (known
as SIT or SGIT) plus added processes
7ZR6WDWH)DFLOLWLHV*UHHQLQJ*RYHUQPHQWinventories completed
*RYHUQRUVH[HFXWLYHRUGHUUHTXLUHV\HDUupdates to whole state inventory
Current effort targeted to develop draft inMarch 2013 based on default mode SIT
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APCD Greenhouse Gas Inventory Update
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Many local governments havecreated their own GHG inventoriesin Colorado (Aspen/Pitkin County,Boulder, Denver, Ft. Collins, etc.)
Local inventories reflect varyinglevels of granularity depending onthe availability of local data
Local inventories produce ageographic patchwork of statewideemissions and do not all use thesame methodology
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WGA/WRAP/CCS
APCD Greenhouse Gas Inventory Update
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Western *RYHUQRUV$VVRFLDWLRQFRQWUDFWHGZLWKWKHWestern Regional Air Partnership to produce a state-by-state western U.S. GHG inventory
WRAP subcontracted to
Center for Climate Strategiesto perform the work
Last inventory completed and
published 2007(On APCD Climate Change site
With older inventories and updates)
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Executive Order
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In April 22, 2008 Governor Ritter signed anH[HFXWLYHRUGHUUHTXLULQJ
&'3+(WRSODQIRUSHUIRUPLQJXSGDWHVWRWKHVWDWHV
greenhouse gas emissions inventory, with the first updatescheduled to be completed no later than 2012 and
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The Update
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Past inventories for the State are all top down
Over 20 local municipalities in Colorado have
inventories, all bottom up Evaluation of the CCS inventory performed by CU
team:
Shortcomings identified
Changes in regulations and legislation changeassumptions from 2005 to 2020
Updated data change calculations
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Top Down Approach Adopted
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EPA released an update to the
State Inventory Tool (SIT)
(formerly State Greenhouse
Inventory Tool) -Fall 2012
Model has ten modules & projection
tool
Consideration given to using
Argonne Labs GREET model for transportation
Consideration given to use CSU Agricultural and Forest model EPA continues to update each module with new data base links and
improvement to calculations
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The EPA State Inventory Tool (SIT)-Pros
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Has 10 emissions modules
Has a projection module
Links major national data bases to calculation schemes
Has consistency with other states Follows the international GHG protocol the U.S. agreed
to follow for the national inventory
Allows for customization of emission factors and activity
assumptions Was updated by EPA in 2013 to improve the process
using latest assumptions
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2012 National Major Stationary
Source Inventory Improves Data
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SIT Model Cons
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One size fits all
Difficult to track down national data bases and
source of original information
Spreadsheets complex and appear to have some
data gaps
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National data bases often difficult to dissect todetermine validity of assumptions
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Black Carbon
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Current SIT does not address
EPA SPECIATE model used by CCS in the 2007inventory
Has multiple impacts in Colorado Fine particulate related to fire
Impacts on visibility in urban and regional haze
Impacts from new sources like natural gas flaring
Role and contribution not well understood Inventory process challenging
1DWXUDOILUHGLHVHOFRPEXVWLRQVRXUFHVWUDQVSRUW
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APCD Greenhouse Gas Inventory Update Apr201314
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APCD Greenhouse Gas Inventory Update Apr201315
Draft SIT Model Runs
1990-2030
(2013 Analysis)
(Million Metric Tons CO2e) 1990 1995 2000 2005 2010 2020 2030
Electrical Production 31 33 39 40 39 39 39
(RCI) Fuel Use 17 20 23 27 28 28 29
Transportation 20 24 27 31 30 36 40
Fossil Fuel Industry 6 5 10 11 12 15 15
Industrial Processes 1 2 4 5 5 6 8
Waste Management 1 1 1 2 3 3 3
Agriculture 8 8 9 9 8 8 7
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Status and Next Steps
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Status
State facilities inventory completed
Update of state inventory model runs and summary
completed December 2012 Draft report scheduled for May 2013
Next Steps
Finish documentation of default case
Run projection case Publish draft for review
Consider Colorado adjustments