### Author: Abt Associates Inc.

Date Created: 8/27/2008 Date Modified: 3/30/2011 Purpose: Monetizes Benefits/Costs from Changes in tCO2eq Emissions as a result of Proposed Existing Facilities Rule. (CBI)

File Contents: Worksheet Contents
Variables Lists assumed constants used throughout the cost and economic impacts analysis model as well as various adjustment indexes for dollar years adjustments. Table_ByYr Contains a summary table of SCC by year for three regulatory options. SumTable_SocCost_DRContains a summary table of annualized SCC values for three regulatory options.
SCCValsByYr Contains SCC values in $2007/Ton CO2 and $2009/Ton CO2 from the 2010 Technical Supporting Document (2010 TSD) titled Social Cost of Carbon for Regulatory Impact Analysis-Under Executive Order 12866 developed by the U.S. Government Interagency Work Group on Social Cost of Carbon. Option1 Contains SCC calculations by year for Option 1 (IM Everywhere) Option2 Contains SCC calculations by year for Option 1 (IM Everywhere and EM for Facilities with DIF>125MGD) Option3 Contains SCC calculations by year for Option 1 (I&E Mortality Everywhere) CO2ByYr Contains IPM-based change in emissions (tCO2eq) by year for each of the three regulatory options. IPMCO2 Containcs IPM-based Change in emissions (tCO2eq) for each IPM run year and each of the three regulatory options.

Input Files: External data used in calculations/analysis: EPA302ABT_PC_2b_ParsedSummary_Analysis.xls EPA302ABT_PC_1b_ParsedSummary_Analysis.xls EPA302ABT_PC_3c_ParsedSummary_Analysis.xls GDP_Deflator.xls (not linked)

The original version of this file contains, or is linked to a file that contains, confidential business information (CBI), or information that could be used to reveal CBI. As a result, the values for any variables determined by EPA to be CBI, or that could be used to reveal CBI, have been concealed.

FileInfo 1 of 31

### General Variables for Monetization of Benefits from Reductions in GHG Emissions

DollarYr 2009 Variable Social Cost of Carbon ($/t CO2, $2006) EO 12866 Support Doc DR Option 1: Discount Rate of 2.5% Low Med $36.3 High DR Option 2: Discount Rate of 3.0% Low Med $22.1 High $67.1 DR Option 3: Discount Rate of 5.0% Low Med $4.9 High DR Option 4 Low Med High

Discount Rate Values Excel Name Value Notes/Sources DR Option 1: Discount Rate of 2.5% DR_1 2.5%Analysis option 1 is framed for a constant discount rate over time DR Option 2: Discount Rate of 3.0% DR_2 3.0%Analysis option 2 is framed for a constant discount rate over time DR Option 3: Discount Rate of 5.0% DR_3 5.0%Analysis option 3 is framed for a constant discount rate over time Other Analysis Parameters Global SCC Annual Growth RateSCC_GR Accounts for real change in SCC due to incresed CO2concentrations in the atmosphere over time (IPCC) U.S. SCC Annual Growth RateSCC_GR_US Accounts for real change in SCC due to incresed CO2concentrations in the atmosphere over time (IPCC) SCC Base Year SCC_BASE 2010Base emissions year applicable to initial SCC values Rule PV Year PV_YEAR 2012Determines which year to discount back to for present value calculation Rule Last Year LAST_YEAR 2056Last year of emissions changes for the selected regulatory action Rule Promulgation Year PROMULG_YEAR 2012 Discount Rate - Social DISCRATE_SOC 3.0% Discount Rate - Prvt DISCRATE_PRIV 7.0% Number of Years NYEARS 50Number of years in analysis Select Regulatory Actions Option 1: IM-Only 2013First year of emissions for this rule Option 2: CT for Facilities with DIF>125 DIFMGD, Else IM-Only 2013First year of emissions for this rule Option 3: CT Everywhere 2013First year of emissions for this rule

2007 GDP_Adjustment_2007_to_2009 1.033

mton_to_ston 1.10231

AnalysisYear 2015 Select Regulatory Action: 2 Option 2: CT for Facilities with DIF>125 DIFMGD, Else IM-Only

Variables 2 of 31IPMDollarYear 2006 IPM_Yr1 2015 IPM_Yr2 2020 IPM_Yr3 2025 IPM_Yr4 2028 EIA_Yr1 2003 EIA_Yr2 2004 EIA_Yr3 2005 EIA_Yr4 2006 EIA_Yr5 2007 ComplYr_IM 2015 ComplYr_CTNonNuc 2020 ComplYr_CTNuc 2025

Option 1 IM Everywhere Option 2 IM Everywhere and EM at Facilities with DIF>125 MGD Option 3 I&E Mortality Everywhere

Variables 3 of 312 8 18 21 28 2 8 18 21 28

2.5% 3.0% 3.0% 5.0% 2.5% 3.0% 3.0% 5.0%

Year Emissions

(tCO2eq) Average Average High Average Emissions (tCO2eq) Average Average High Average 2012 0.0 $0.0 $0.0 $0.0 $0.0 0.0 $0.0 $0.0 $0.0 $0.0 2013 -0.2 -$7.2 -$4.4 -$13.5 -$1.0 -2.0 -$77.8 -$48.0 -$146.4 -$11.1 2014 -0.2 -$7.3 -$4.5 -$13.8 -$1.1 -2.0 -$79.3 -$49.0 -$149.8 -$11.6 2015 -0.2 -$7.4 -$4.6 -$14.1 -$1.1 -2.0 -$80.8 -$50.1 -$153.1 -$12.0 2016 -0.2 -$7.5 -$4.7 -$14.4 -$1.1 -2.0 -$82.0 -$51.1 -$156.5 -$12.4 2017 -0.2 -$7.7 -$4.8 -$14.7 -$1.2 -2.0 -$83.5 -$52.2 -$159.9 -$12.8 2018 0.4 $16.0 $10.0 $30.7 $2.5 34.5 $1,440.6 $902.2 $2,763.5 $224.6 2019 0.4 $16.2 $10.2 $31.3 $2.6 34.5 $1,462.0 $920.0 $2,820.6 $231.8 2020 0.4 $16.5 $10.4 $31.9 $2.7 34.5 $1,486.9 $937.8 $2,877.6 $242.5 2021 0.4 $16.8 $10.7 $32.7 $2.8 34.5 $1,515.5 $962.8 $2,945.4 $253.2 2022 0.4 $17.2 $10.9 $33.5 $2.9 34.5 $1,547.6 $984.2 $3,016.7 $263.9 2023 -1.4 -$61.9 -$39.7 -$121.2 -$10.8 56.3 $2,572.4 $1,647.0 $5,034.1 $448.1 2024 -1.4 -$63.1 -$40.5 -$123.9 -$11.1 56.3 $2,618.9 $1,681.9 $5,144.7 $459.8 2025 -1.4 -$64.3 -$41.5 -$126.7 -$11.5 56.3 $2,671.3 $1,722.7 $5,261.1 $477.2 2026 -1.4 -$65.4 -$42.3 -$129.3 -$11.9 56.3 $2,717.8 $1,757.6 $5,371.7 $494.7 2027 -1.4 -$66.6 -$43.3 -$132.0 -$12.3 56.3 $2,764.4 $1,798.3 $5,482.3 $512.1 2028 -1.4 -$70.7 -$46.0 -$140.5 -$13.3 41.4 $2,071.5 $1,348.2 $4,117.3 $389.5 2029 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,105.7 $1,373.9 $4,198.6 $402.3 2030 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,140.0 $1,403.8 $4,280.0 $415.2 2031 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,178.5 $1,429.5 $4,365.6 $428.0 2032 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,212.7 $1,459.5 $4,446.9 $440.8 2033 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,247.0 $1,485.1 $4,528.2 $453.7 2034 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,285.5 $1,515.1 $4,613.8 $466.5 2035 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,319.7 $1,540.8 $4,695.1 $479.4 2036 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,354.0 $1,570.7 $4,776.4 $492.2 2037 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,392.5 $1,596.4 $4,862.0 $505.0 2038 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,426.7 $1,622.1 $4,943.4 $517.9 2039 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,461.0 $1,652.1 $5,024.7 $530.7 2040 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,499.5 $1,677.7 $5,106.0 $543.6 2041 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,525.2 $1,703.4 $5,178.8 $556.4 2042 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,555.1 $1,729.1 $5,251.5 $569.2 2043 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,585.1 $1,750.5 $5,324.3 $582.1 2044 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,610.8 $1,776.2 $5,397.0 $594.9 2045 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,640.7 $1,801.9 $5,469.8 $607.8 2046 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,670.7 $1,823.3 $5,538.3 $620.6 2047 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,696.4 $1,848.9 $5,611.0 $633.4 2048 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,726.3 $1,874.6 $5,683.8 $646.3 2049 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,756.3 $1,900.3 $5,756.6 $659.1 2050 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,782.0 $1,921.7 $5,829.3 $672.0 Social Cost of Carbon as of 2012 (Millions; $2009) Social Cost of Carbon as of 2012 (Millions; $2009)

Discount Rate Discount Rate

Table_ByYr 4 of 31Year 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2 8 18 21 28

2.5% 3.0% 3.0% 5.0% Emissions (tCO2eq) Average Average High Average 0.0 $0.0 $0.0 $0.0 $0.0 -2.0 -$78.0 -$48.1 -$146.8 -$11.2 -2.0 -$79.5 -$49.1 -$150.2 -$11.6 -2.0 -$81.0 -$50.2 -$153.5 -$12.0 -2.0 -$82.3 -$51.2 -$156.9 -$12.4 -2.0 -$83.7 -$52.3 -$160.3 -$12.9 35.8 $1,496.2 $937.0 $2,870.2 $233.3 35.8 $1,518.4 $955.5 $2,929.5 $240.7 35.8 $1,544.4 $974.0 $2,988.7 $251.8 35.8 $1,574.0 $999.9 $3,059.1 $262.9 35.8 $1,607.3 $1,022.2 $3,133.1 $274.1 57.5 $2,626.6 $1,681.7 $5,140.3 $457.6 57.5 $2,674.1 $1,717.4 $5,253.2 $469.5 57.5 $2,727.6 $1,759.0 $5,372.0 $487.3 57.5 $2,775.2 $1,794.6 $5,484.9 $505.1 57.5 $2,822.7 $1,836.2 $5,597.8 $522.9 42.4 $2,119.0 $1,379.1 $4,211.8 $398.4 42.4 $2,154.1 $1,405.4 $4,295.0 $411.5 42.4 $2,189.1 $1,436.0 $4,378.2 $424.7 42.4 $2,228.5 $1,462.3 $4,465.8 $437.8 42.4 $2,263.5 $1,493.0 $4,548.9 $451.0 42.4 $2,298.6 $1,519.2 $4,632.1 $464.1 42.4 $2,338.0 $1,549.9 $4,719.7 $477.2 42.4 $2,373.0 $1,576.1 $4,802.9 $490.4 42.4 $2,408.0 $1,606.8 $4,886.1 $503.5 42.4 $2,447.4 $1,633.1 $4,973.6 $516.6 42.4 $2,482.4 $1,659.3 $5,056.8 $529.8 42.4 $2,517.5 $1,690.0 $5,140.0 $542.9 42.4 $2,556.9 $1,716.3 $5,223.2 $556.0 42.4 $2,583.1 $1,742.5 $5,297.6 $569.2 42.4 $2,613.8 $1,768.8 $5,372.0 $582.3 42.4 $2,644.4 $1,790.7 $5,446.5 $595.4 42.4 $2,670.7 $1,816.9 $5,520.9 $608.6 42.4 $2,701.3 $1,843.2 $5,595.3 $621.7 42.4 $2,732.0 $1,865.1 $5,665.4 $634.8 42.4 $2,758.3 $1,891.4 $5,739.8 $648.0 42.4 $2,788.9 $1,917.6 $5,814.2 $661.1 42.4 $2,819.6 $1,943.9 $5,888.7 $674.2 42.4 $2,845.8 $1,965.8 $5,963.1 $687.4 Social Cost of Carbon as of 2012 (Millions; $2009)

Discount Rate

Table_ByYr 5 of 312.5% 3.0% 3.0% 5.0% 2.5% 3.0% 3.0% 5.0%

Year Emissions

(tCO2eq) Average Average High Average Emissions (tCO2eq) Average Average High Average Social Cost of Carbon as of 2012 (Millions; $2009) Social Cost of Carbon as of 2012 (Millions; $2009)

Discount Rate Discount Rate

2051 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,807.9 $1,943.3 $5,903.0 $685.0 2052 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,834.1 $1,965.2 $5,977.6 $698.4 2053 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,860.5 $1,987.4 $6,053.2 $712.0 2054 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,887.1 $2,009.7 $6,129.7 $725.9 2055 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,914.0 $2,032.4 $6,207.1 $740.0 2056 0.0 $0.0 $0.0 $0.0 $0.0 41.4 $2,941.2 $2,055.3 $6,285.6 $754.4 NPV 3% -$231.5 -$149.6 -$456.6 -$41.9 $45,022.0 $29,852.9 $91,007.7 $9,222.2 Annualized, 3% -$9.0 -$5.8 -$17.7 -$1.6 $1,749.8 $1,160.2 $3,537.1 $358.4 NPV 7% -$139.7 -$90.1 -$275.0 -$25.1 $20,217.7 $13,250.9 $40,435.9 $3,929.8 Annualized 7% -$10.1 -$6.5 -$19.9 -$1.8 $1,465.0 $960.2 $2,930.0 $284.8

Table_ByYr 6 of 31Year 2012 2051 2052 2053 2054 2055 2056 NPV 3% Annualized, 3% NPV 7% Annualized 7% 2.5% 3.0% 3.0% 5.0% Emissions (tCO2eq) Average Average High Average

Social Cost of Carbon as of 2012 (Millions; $2009)

Discount Rate

42.4 $2,872.3 $1,987.9 $6,038.5 $700.8 42.4 $2,899.1 $2,010.3 $6,114.8 $714.4 42.4 $2,926.1 $2,033.0 $6,192.1 $728.3 42.4 $2,953.4 $2,055.9 $6,270.3 $742.5 42.4 $2,980.9 $2,079.0 $6,349.6 $757.0 42.4 $3,008.7 $2,102.4 $6,429.8 $771.7 $46,137.9 $30,589.9 $93,255.4 $9,447.0 $1,793.2 $1,188.9 $3,624.4 $367.2 $20,746.1 $13,595.4 $41,487.9 $4,030.2 $1,503.3 $985.1 $3,006.2 $292.0

Table_ByYr 7 of 31Summary of Global Monetized Benefits from Changes in tCO2eq Emissions, $Millions (Based on Literature-selected SCC values) Option 2: CT for Facilities with DIF>125 DIFMGD, Else IM-Only (2012 - 2056)* DR Option 1: Average Unit SCC Price DR Option 2: Average Unit SCC Price DR Option 2: High Unit SCC Price DR Option 3: Average Unit SCC Price
Option Emissions Change (tCO2eq) Global Measure of SCC 3%

Discount Rate, Global Measure of

SCC 3% Discount Rate, Global Measure

of SCC 5% Discount Rate, Global Measure of

SCC Discounted and Annualized at 3% Option 1: IM-Only (7) ($9) ($6) ($18) ($2) Option 2: CT for Facilities with DIF>125 DIFMGD, Else IM-Only 1,645 $1,750 $1,160 $3,537 $358 Option 3: CT Everywhere 1,685 $1,793 $1,189 $3,624 $367 Discounted and Annualized at 7% Option 1: IM-Only ($10) ($7) ($20) ($2) Option 2: CT for Facilities with DIF>125 DIFMGD, Else IM-Only $1,465 $960 $2,930 $285 Option 3: CT Everywhere $1,503 $985 $3,006 $292 changes used for the analysis of selected rule. For present value and

SumTable_SocCost_DR 8 of 31Annual ACC Values2 3 4 5 6 7 8 9

Discount Rate 5% 3% 2.50% 3% 5% 3% 2.50% 3% Year Avg Avg Avg 95th Avg Avg Avg 95th 2010 $4.70 $21.40 $35.10 $64.90 $4.86 $22.12 $36.28 $67.07 2011 $4.90 $21.90 $35.70 $66.50 $5.06 $22.63 $36.90 $68.73 2012 $5.10 $22.40 $36.40 $68.10 $5.27 $23.15$37.62 $70.38 2013 $5.30 $22.80 $37.00 $69.60 $5.48 $23.56 $38.24 $71.93 2014 $5.50 $23.30 $37.70 $71.20 $5.68 $24.08 $38.96 $73.58 2015 $5.70 $23.80 $38.40 $72.80 $5.89 $24.60 $39.69 $75.24 2016 $5.90 $24.30 $39.00 $74.40 $6.10 $25.11 $40.31 $76.89 2017 $6.10 $24.80 $39.70 $76.00 $6.30 $25.63 $41.03 $78.54 2018 $6.30 $25.30 $40.40 $77.50 $6.51 $26.15$41.75$80.09 2019 $6.50 $25.80 $41.00 $79.10 $6.72 $26.66 $42.37 $81.75 2020 $6.80 $26.30 $41.70 $80.70 $7.03 $27.18 $43.10 $83.40 2021 $7.10 $27.00 $42.50 $82.60 $7.34 $27.90 $43.92 $85.37 2022 $7.40 $27.60 $43.40 $84.60 $7.65 $28.52 $44.85$87.43 2023 $7.70 $28.30 $44.20 $86.50 $7.96 $29.25$45.68 $89.40 2024 $7.90 $28.90 $45.00 $88.40 $8.16 $29.87 $46.51 $91.36 2025 $8.20 $29.60 $45.90 $90.40 $8.47 $30.59 $47.44 $93.43 2026 $8.50 $30.20 $46.70 $92.30 $8.78 $31.21 $48.26 $95.39 2027 $8.80 $30.90 $47.50 $94.20 $9.09 $31.93 $49.09 $97.35 2028 $9.10 $31.50 $48.40 $96.20 $9.40 $32.55$50.02 $99.42 2029 $9.40 $32.10 $49.20 $98.10 $9.71 $33.17 $50.85$101.38 2030 $9.70 $32.80 $50.00$100.00$10.02 $33.90 $51.67$103.35 2031 $10.00 $33.40 $50.90$102.00$10.33 $34.52 $52.60$105.41 2032 $10.30 $34.10 $51.70$103.90$10.64 $35.24 $53.43$107.38 2033 $10.60 $34.70 $52.50$105.80$10.95$35.86 $54.26$109.34 2034 $10.90 $35.40 $53.40$107.80$11.26 $36.59 $55.19$111.41 2035 $11.20 $36.00 $54.20$109.70$11.57 $37.21 $56.01$113.37 2036 $11.50 $36.70 $55.00$111.60$11.89$37.93 $56.84$115.34 2037 $11.80 $37.30 $55.90$113.60$12.20 $38.55$57.77$117.40 2038 $12.10 $37.90 $56.70$115.50$12.51 $39.17 $58.60$119.37 2039 $12.40 $38.60 $57.50$117.40$12.82 $39.89 $59.43$121.33 2040 $12.70 $39.20 $58.40$119.30$13.13 $40.51 $60.36$123.29 2041 $13.00 $39.80 $59.00$121.00$13.44 $41.13 $60.98$125.05 2042 $13.30 $40.40 $59.70$122.70$13.75$41.75$61.70$126.81 2043 $13.60 $40.90 $60.40$124.40$14.06 $42.27 $62.42$128.56 2044 $13.90 $41.50 $61.00$126.10$14.37 $42.89 $63.04$130.32 2045 $14.20 $42.10 $61.70$127.80$14.68$43.51 $63.77$132.08 2046 $14.50 $42.60 $62.40$129.40$14.99$44.03 $64.49$133.73 2047 $14.80 $43.20 $63.00$131.10$15.30 $44.65$65.11$135.49 2048 $15.10 $43.80 $63.70$132.80$15.61 $45.27 $65.83$137.25 2049 $15.40 $44.40 $64.40$134.50$15.92 $45.89 $66.56$139.00 2050 $15.70 $44.90 $65.00$136.20$16.23 $46.40 $67.18$140.76 $2007/Ton CO2 $2009/Ton CO2

SCCValsByYr 9 of 31Discount Rate 5% 3% 2.50% 3% 5% 3% 2.50% 3% Year Avg Avg Avg 95th Avg Avg Avg 95th $2007/Ton CO2 $2009/Ton CO2

2051 $16.01 $45.41 $65.61$137.92$16.54 $46.93 $67.80$142.54 2052 $16.32 $45.92 $66.22$139.66$16.86 $47.45$68.43$144.34 2053 $16.64 $46.43 $66.83$141.43$17.19$47.99 $69.07$146.17 2054 $16.96 $46.96 $67.46$143.22$17.53 $48.53 $69.71$148.01 2055 $17.29 $47.49 $68.08$145.03$17.87 $49.08 $70.36$149.88 2056 $17.63 $48.02 $68.72$146.86$18.22 $49.63 $71.02$151.78 AGR 3.1% 1.9% 1.6% 1.9% 3.1% 1.9% 1.6% 1.9%

SCCValsByYr 10 of 31Monetization of Benefits fromChanges in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars) Option 1: IM-Only 

### DR Option 1: Discount Rate of 2.5% 2 2.5% Discount Rate, Global Measure of SCC Low Mid High Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC Emissions (tCO2eq) Year

Option1 11 of 312 Emissions (tCO2eq) Year Monetization of Benefits fromChanges in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars) Option 1: IM-Only 

### DR Option 2: Discount Rate of 3.0% 3% Discount Rate, Global Measure of SCC Low Mid High Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC

Option1 12 of 312 Emissions (tCO2eq) Year Monetization of Benefits fromChanges in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars) Option 1: IM-Only 

### DR Option 3: Discount Rate of 5.0% 5% Discount Rate, Global Measure of SCC Low Mid High Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC

Option1 13 of 31Monetization of Benefits fromChanges in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars) Option 1: IM-Only 

### DR Option 1: Discount Rate of 2.5% 2 2.5% Discount Rate, Global Measure of SCC Low Mid High Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC Emissions (tCO2eq) Year

Option1 14 of 312 Emissions (tCO2eq) Year Monetization of Benefits fromChanges in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars) Option 1: IM-Only 

### DR Option 2: Discount Rate of 3.0% 3% Discount Rate, Global Measure of SCC Low Mid High Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC

Option1 15 of 312 Emissions (tCO2eq) Year Monetization of Benefits fromChanges in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars) Option 1: IM-Only 

### DR Option 3: Discount Rate of 5.0% 5% Discount Rate, Global Measure of SCC Low Mid High Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC

Option1 16 of 311 2 3 4 5 6 7 8 9 10 11 12 # 14 Monetization of Benefits from Changes in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars) Monetization of Benefits from Changes in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars)

Option 2: CT for Facilities with DIF>125 DIFMGD, Else IM-Only Option 2: CT for Facilities with DIF>125 DIFMGD, Else IM-Only 

### DR Option 1: Discount Rate of 2.5% 3 2.5% Discount Rate, Global Measure of SCC Low Mid High Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Year Emissions

(tCO2eq)

Option2 17 of 311 2

3

Year Emissions

(tCO2eq) 15 16 17 18 19 20 21 22 # 24 25 Monetization of Benefits from Changes in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars) Monetization of Benefits from Changes in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars)

Option 2: CT for Facilities with DIF>125 DIFMGD, Else IM-Only Option 2: CT for Facilities with DIF>125 DIFMGD, Else IM-Only 

### DR Option 2: Discount Rate of 3.0% 3% Discount Rate, Global Measure of SCC Low Mid High Low Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC

Option2 18 of 311 2

3

Year Emissions

(tCO2eq) 26 27 28 29 30 31 32 Monetization of Benefits from Changes in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars)

Option 2: CT for Facilities with DIF>125 DIFMGD, Else IM-Only 

### DR Option 3: Discount Rate of 5.0% 5% Discount Rate, Global Measure of SCC

Mid High PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC

Option2 19 of 31Monetization of Benefits from Changes in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars) Monetization of Benefits from Changes in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars)

Option 2: CT for Facilities with DIF>125 DIFMGD, Else IM-Only Option 2: CT for Facilities with DIF>125 DIFMGD, Else IM-Only 

### DR Option 1: Discount Rate of 2.5% 3 2.5% Discount Rate, Global Measure of SCC Low Mid High Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Year Emissions

(tCO2eq)

Option2 20 of 313

Year Emissions

(tCO2eq) Monetization of Benefits from Changes in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars) Monetization of Benefits from Changes in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars)

Option 2: CT for Facilities with DIF>125 DIFMGD, Else IM-Only Option 2: CT for Facilities with DIF>125 DIFMGD, Else IM-Only 

### DR Option 2: Discount Rate of 3.0% 3% Discount Rate, Global Measure of SCC Low Mid High Low Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC

Option2 21 of 313

Year Emissions

(tCO2eq) Monetization of Benefits from Changes in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars)

Option 2: CT for Facilities with DIF>125 DIFMGD, Else IM-Only 

### DR Option 3: Discount Rate of 5.0% 5% Discount Rate, Global Measure of SCC

Mid High PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC

Option2 22 of 311 2 3 4 5 6 7 8 9 10 11 12 # 14 Monetization of Benefits from Changes in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars) Monetization of Benefits from Changes in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars)

Option 3: CT Everywhere Option 3: CT Everywhere DR Option 1: Discount Rate of 2.5% 4 2.5% Discount Rate, Global Measure of SCC Low Mid High Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Year Emissions

(tCO2eq)

Option3 23 of 311 2

4

Year Emissions

(tCO2eq) 15 16 17 18 19 20 21 22 # 24 25 Monetization of Benefits from Changes in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars) Monetization of Benefits from Changes in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars)

Option 3: CT Everywhere Option 3: CT Everywhere DR Option 2: Discount Rate of 3.0% 3% Discount Rate, Global Measure of SCC Low Mid High Low Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC

Option3 24 of 311 2

4

Year Emissions

(tCO2eq) 26 27 28 29 30 31 32 Monetization of Benefits from Changes in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars)

DR Option 3: Discount Rate of 5.0% 5% Discount Rate, Global Measure of SCC

Mid High PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC

Option3 25 of 31Monetization of Benefits from Changes in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars) Monetization of Benefits from Changes in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars)

Option 3: CT Everywhere Option 3: CT Everywhere DR Option 1: Discount Rate of 2.5% 4 2.5% Discount Rate, Global Measure of SCC Low Mid High Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Year Emissions

(tCO2eq)

Option3 26 of 314

Year Emissions

(tCO2eq) Monetization of Benefits from Changes in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars) Monetization of Benefits from Changes in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars)

Option 3: CT Everywhere Option 3: CT Everywhere DR Option 2: Discount Rate of 3.0% 3% Discount Rate, Global Measure of SCC Low Mid High Low Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC

Option3 27 of 314

Year Emissions

(tCO2eq) Monetization of Benefits from Changes in tCO2eq Emissions Using a Global Measure of the Social Cost of Carbon (2009 dollars)

DR Option 3: Discount Rate of 5.0% 5% Discount Rate, Global Measure of SCC

Mid High PV SCC Unit SCC Total SCC PV SCC Unit SCC Total SCC PV SCC

Option3 28 of 31

### Summary of Changes in tCO2eq Emissions for Selected Regulatory Actions
Change in Emissions (tCO2eq)

Year Option 1: IM Everywhere Option 2: IM Everywhere and EM for Facilities with DIF>!25 MGDOption 3: I& E Mortality Everywhere 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051

CO2ByYr 29 of 31Year Option 1: IM Everywhere Option 2: IM Everywhere and EM for Facilities with DIF>!25 MGDOption 3: I& E Mortality Everywhere 2052 2053 2054 2055 2056

CO2ByYr 30 of 31

### CO2 Total (Tons) 12 13 14 15 1 2 3 4 5 CO2Tones

Variable 2015 2020 2025 2028 Option 1 Option 2 Option 3 Year PC Less BC

IPMCO2 31 of 31