1 2 3 4 5 6 7 8 9 **Capacity Fuel**  Unique ID Name Plant Code **Unit MW gross**  **Fuel Avg NOx**  **Avg SO2 2011NOx**  8223_1 Springerville 8223 1 424.8 C 0.182 0.218 0.18 8223_2 Springerville 8223 2 424.8 C 0.19 0.185 0.188 Notes: 1 1 1

Notes 1 Determined from data reported to US EPA and available on the Clean Air Markets Division Web Site

2 Selected as higher of 2008-2010 average or 2011 average unless there was reason to believe that an implemented change in equipment had reduced emissions for 2011 3 This is an estimate from 2008-2011 period based upon reported heat input, capacity and heat rate in NEEDS v4.10 4 From NEEDS v4.10

Economic Assumptions: Capital Recovery Factor 9.44%

Interest Rate 7.00% Period (yrs) 20

Insurance 0.30% From Integrated Planning Model ver 4.10 documentationpage 8-11 Property Taxes 0.90% From Integrated Planning Model ver 4.10 documentationpage 8-11

**Modeled Rates UNC 2008-2010 Avg**  **Capacity Fuel**  **NOx SO2**  **PM NOx**  **SO2** Springerville Generating Station 1 424.8 C 0.182 0.218 Springerville Generating Station 2 424.8 C 0.190 0.185 Springerville Generating Station

TS3 450 C 0.072 0.082 Springerville Generating Station

4 450 C 0.063 0.081 **2008-2010 Reported Avg 2011 Reported Rates** 10 11 12 13 14 **2008-2011**
**2011 SO2 model NOx**  **model SO2 Capac. Fctr**  **Heat Rate Burner**  **Controls**
0.253 0.182 0.253 65% 10001 T LNC1 0.167 0.19 0.185 70% 9893 T LNC1 1 2 2 3 4
Determined from data reported to US EPA and available on the Clean Air Markets Division Web Site Selected as higher of 2008-2010 average or 2011 average unless there was reason to believe that an implemented change in equipment had reduced emissions for 2011 This is an estimate from 2008-2011 period based upon reported heat input, capacity and heat rate in NEEDS v4.10

From Integrated Planning Model ver 4.10 documentationpage 8-11 From Integrated Planning Model ver 4.10 documentationpage 8-11

**2011 Reported Rates 08-'11 estimated Cap Fctr**  **NOx SO2**  0.180 0.253 65.3% 0.188 0.167 69.5% 0.065 0.071 64.4% 0.064 0.081 51.6%

**modelled rate 2011 Reported Rates** **Unit Control Option**  **Ctrl Eff (lb/MMBtu)**  **(lb/hr) (tpy)**  **(%)** Springerville 1 Uncontrolled 3.00 12745 36,286

--

DFGD (existing) 0.21 892 2,540 93% 1 WFGD 0.06 255 726 98% Springerville 2 Uncontrolled 3.00 12608 38,655

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DFGD (existing) 0.18 756 2,319 94% 1 WFGD 0.06 252 782 98%
1Based on 2007-11 annual average CAMD emission data **SO 2** **Emission Rate N** **o t** **e s** **Total Capital Cost Total Annual Cost**  **Cost effectiveness ($/ton)** 

$202,032,714 $32,553,987 $17,943

$201,052,181 $32,905,552 $21,398

### Variable **Designation Units**  **Value**

Unique ID 8223_1 8223_2 Plant Name Springerville Springerville Unit # 1 2 Unit Size A MW 424.8 424.8 Gross Heat Rate C Btu/kwhr 10001 9893 SO2 Rate D lb/Mmbtu 3 3 CF 65.0% 70.0% Type of Coal E sub sub Coal Factor F 1.05 1.05 Retrofit Factor B 1 1 HR Factor G 1.0001 0.9893 Heat Input H Btu/hr 4.25E+09 4.20E+09 Limestone Rate K ton/hr 11.16 11.04 Waste Rate L ton/hr 20.22 20.00

Aux. Power M % 1.76 1.74 Makeup Water Rate N (1000gph) 36 35 Limestone Cost P $/ton 15 15 Waste Disposal Cost Q $/ton 30 30 Aux Power Cost R $/kwh 0.06 0.06 Makeup Water Cost S $/1000 1 1 Operating Labor Rate T $/hr 60 60

**Capital Cost Calculation (includes equipment, installation, buildings, foundations,electrical, minor physical/chemical ww treatment and retrofit difficulty)**

BMR ($) = base absorber island cost 44,348,606 44,060,632 BMF ($) = base reagent preparation cost20,122,555 20,057,116 BMW ($) = base waste handling cost 12,488,326 12,427,457 BMB ($) = BOP cost 78,450,293 78,110,318 BMWW ($) = Waste water treatment BM ($) = Total base cost 155,409,780 154,655,524 BM ($/KW) = 366 364
**Total Project Cost** A1 = 10% of BM ($) = Eng. and Construction management 15,540,978 15,465,552 A2 = 10% of BM ($) = Labor adjustment 15,540,978 15,465,552 A3 = 10% of BM ($) = Contractor profit/fees 15,540,978 15,465,552**CECC ($) =** Cap., Eng. and management 202,032,714 201,052,181

**CECC ($/kw) =** 476 473

B1 = 5% of CECC owners cost **TPC' ($) =** TPC w/o AFUDC 202,032,714 201,052,181 **TPC' ($/kw) =** 476 473

B2 = 10% of TPC' AFUDC (3yr cycle) **TPC ($) = Total project cost**  202,032,714 201,052,181 **TPC ($/kw) =** 476 473

**Fixed O&M Cost** FOMO ($/kw-yr) = fixed O&M - additional labor cost 3.5 3.5 FOMM ($/kw-yr) = fixed O&M - additional maintenace, mtl and labor cost 5.5 5.5 FOMA ($/kw-yr) = fixed O&M - additional administration labor cost 0.17 0.17 FOMWW ($/kw-yr) = fixed O&M - wastewater treatment **FOM ($/kw-yr) = Total Fixed O&M Cost**  9.18 9.16

**Variable O&M Cost** VOMR ($/MWhr) = Variable O&M - limestone 0.39 0.39 VOMW ($/MWhr) = Variable O&M - waste disposal 1.43 1.41 VOMP ($/MWhr) = Variable O&M - aux. power 1.05 1.04 VOMM ($/MWhr) = Variable O&M - makeup water 0.08 0.08 VOMWW ($/MWhr) = Variable O&M - water treatment **VOM ($/MWhr) = Total Variable O&M Cost**  2.96 2.93

CR = 9.44% 9.44% Property Taxes and Insurance 1.20% 1.20%

Total Charge Rate 10.64% 10.64% **Cost of control - $/Ton**

CF 65% 70% Control Efficiency for SO2>3lb/Mbtu=98%; <3 = (SO2-0.06)/SO2 98% 98% **Uncontrolled Rate** SO2 Rate (lb/hr) (lb/Mbtu*Heat Input)/1000000 12745 12608 SO2 Rate (lb/MMBtu) 3.000 3.000

SO2 (TPY) Lb/hr*8760*CF/2000 36286 38655 **Controlled Rate** SO2 Rate (lb/hr) 254.9 252.2 SO2 Rate (lb/MMBtu) 0.06 0.06

SO2 (TPY) 726 773**Tons/Year Removed 35560**  **37882**

**Total Cost/year** TPC*CR+(FOM*MW)+VOM(MW*8760)*CF 32553987 32905552 **$/Ton** 915 869

### Calculation

read from Plant Data table read from Plant Data table read from Plant Data table read from Plant Data table Based on APS Cholla coal contract for Lee Ranch/El Segundo coal (Springerville uses the same coal type) read from Plant Data table user input Bit=1; PRB=1.05; Lig=1.07 1 = typical retrofit C/10000 A*C*1000 17.52*A*D*G/2000 1.811*K
(1.05e^(0.155*D))*F*G (1.674*D+74.68)*A*F*G/1000

Total Labor Cost

**Capital Cost Calculation (includes equipment, installation, buildings, foundations,electrical, minor physical/chemical ww treatment and retrofit difficulty)**Source data

Based on APS Cholla coal contract for Lee Ranch/El Segundo coal (Springerville uses the same coal type)

http://www.epa.gov/airmarkets/progsregs/epa-ipm/BaseCasev410.html#documentationSource data

http://www.epa.gov/airmarkets/progsregs/epa-ipm/BaseCasev410.html#documentation

### Variable **Designation Units**  **Value**

Unique ID Unique ID 8223_1 8223_2 Plant Name Plant Springerville Springerville Unit # Unit 1 2 Unit Size A MW 424.8 424.8 Gross Heat Rate C Btu/kwhr 10001 9893 SO2 Rate D lb/MMbtu 3 3 CF CF 65.0% 70.0% Type of Coal E prb prb Coal Factor F 1.05 1.05 Retrofit Factor B 1 1 HR Factor G 1.0001 0.9893 Heat Input H Btu/hr 4.25E+09 4.20E+09 Lime Rate K ton/hr 9.8334 9.7272 Waste Rate L ton/hr 21.4 21.2

Aux. Power M % 1.39 1.38 Makeup Water Rate N (1000gph) 26 25 Lime Cost P $/ton 95 95 Waste Disposal Cost Q $/ton 30 30 Aux Power Cost R $/kwh 0.06 0.06 Makeup Water Cost S $/1000 1 1 Operating Labor Rate T $/hr 60 60

**Capital Cost Calculation (includes equipment, installation, buildings, foundations,electrical, minor physical/chemical ww treatment and retrofit difficulty)**

BMR ($) = base absorber island cost 44,267,683 43,980,234 BMF ($) = base reagent preparation cost 28,466,515 28,404,766 BMB ($) = BOP cost 62,061,173 61,792,222 BM ($) = Total base cost 134,795,370 134,177,222 BM ($/KW) = 317 316
**Total Project Cost** A1 = 10% of BM ($) = Eng. and Construction management 13,479,537 13,417,722 A2 = 10% of BM ($) = Labor adjustment 13,479,537 13,417,722 A3 = 10% of BM ($) = Contractor profit/fees 13,479,537 13,417,722**CECC ($) =** Cap., Eng. and management 175,233,981 174,430,388

**CECC ($/kw) =** 413 411

B1 = 5% of CECC owners cost

- - **TPC' ($) =** TPC w/o AFUDC 175,233,981 174,430,388 **TPC' ($/kw) =** 413 411

B2 = 10% of TPC' AFUDC (3yr cycle) **TPC ($) = Total project cost**  175,233,981 174,430,388 **TPC ($/kw) =** 413 411

**Fixed O&M Cost** FOMO ($/kw-yr) = fixed O&M - additional labor cost 2.4 2.4 FOMM ($/kw-yr) = fixed O&M - additional maintenace, mtl and labor cost 4.8 4.7 FOMA ($/kw-yr) = fixed O&M - additional administration labor cost 0.13 0.13

**FOM ($/kw-yr) = Total Fixed O&M Cost**  7.24 7.22

**Variable O&M Cost** VOMR ($/MWhr) = Variable O&M - limestone 2.20 2.18 VOMW ($/MWhr) = Variable O&M - waste disposal 1.51 1.50 VOMP ($/MWhr) = Variable O&M - aux. power 0.83 0.83 VOMM ($/MWhr) = Variable O&M - makeup water 0.06 0.06

**VOM ($/MWhr) = Total Variable O&M Cost**  4.61 4.56

CR = 9.44% 9.44% Property Taxes and Insurance 1.20% 1.20%

Total Charge Rate 10.64% 10.64% **Cost of control - $/Ton**CF 65% 70% Control Efficiencyfor SO2>1.6lb/Mbtu=95%; <3 = (SO2-0.08)/SO2 97% 97% **Uncontrolled Rate** (lb/Mbtu*Heat Input)/1000000 SO2 Rate (lb/hr) Lb/hr*8760*CF/2000 12745 12608 SO2 Rate (lb/MMBtu) 3.000 3.000

SO2 (TPY) 36286 38655 **Controlled Rate** SO2 Rate (lb/hr) 339.9 336.2 SO2 Rate (lb/MMBtu) TPC*CR+(FOM*MW)+VOM(MW*8760)*CF 0.08 0.08

SO2 (TPY) 968 1031**Tons/Year Removed 35318**  **37624**

**Total Cost/year** $32,858,583 $33,491,097 **$/Ton** $930 $890

### Calculation

user input user input Based on APS Cholla coal contract for Lee Ranch/El Segundo coal (Springerville uses the same coal type)
user input Bit=1; PRB=1.05; Lig=1.07 1 = typical retrofit C/10000 A*C*1000 (0.6702*(D^2)+13.42*D)*A*G/2000 (95% SO2) http://www.epa.gov/airmarkets/progsregs/epa-ipm/BaseCasev410.html#documentation (0.8016*(D^2)+31.1917*D)*A*G/2000
(0.000547*D^2+0.00649*D+1.3)*F*G (0.04898*(D^2)+0.5925*D+55.11)*A*F*G/1000

Total Labor Cost

**Capital Cost Calculation (includes equipment, installation, buildings, foundations,electrical, minor physical/chemical ww treatment and retrofit difficulty)**http://www.epa.gov/airmarkets/progsregs/epa-ipm/BaseCasev410.html#documentation