### Detroit Edison Monthly Fuels - 2008

Sampleid PlantPlant Units Spl Date adlresidualmoist_ttlash_arvol_ar fc_ars_ar btu_arash_dryvol_dryfc_drys_dry btu_dryvol_maffc_maf btu_maf sio2al2o3 tio2 fe2o3 caomgo k2o na2o so3 p2o5 bao sromn02 und 08F009840BR BR1,2 1/25/2008 11.40 16.36 25.89 4.22 31.37 38.51 0.32 9,167 5.69 42.34 51.97 0.43 12,370 44.89 55.11 13,116 35.27 17.67 1.29 5.03 13.474.100.89 6.69 10.30 0.46 1.38 0.78 0.05 2.62 08F013820BR BR1,2 2/25/2008 14.06 17.00 28.67 4.19 30.55 36.59 0.31 8,816 5.87 42.83 51.30 0.43 12,359 45.50 54.50 13,129 35.20 16.98 1.25 5.01 15.174.09 1.00 6.06 13.20 0.66 1.29 0.71 0.04 -0.66 08F019770BR BR1,2 3/25/2008 14.52 16.46 28.59 4.27 30.29 36.860.31 8,765 5.97 42.41 51.62 0.43 12,274 45.11 54.90 13,054 35.59 16.78 1.17 5.23 13.10 3.160.97 5.75 13.70 0.28 1.47 0.70 0.05 2.05 08F028510BR BR1,2 4/25/2008 9.48 17.59 25.40 4.48 32.13 37.99 0.31 9,170 6.01 43.07 50.93 0.41 12,292 45.82 54.18 13,078 37.77 18.97 1.35 5.47 13.09 3.940.85 5.41 8.11 1.20 1.11 0.69 0.04 2.00 08F034070BR BR1,2 5/25/2008 9.92 17.74 25.90 4.33 32.11 37.65 0.30 9,182 5.85 43.34 50.81 0.40 12,391 46.03 53.97 13,161 35.82 18.37 1.32 5.50 16.73 4.67 0.95 7.10 9.85 0.50 1.000.63 0.04 -2.48 08F041220BR BR1,2 6/25/2008 7.94 19.73 26.10 4.24 0.29 9,137 5.74 0.40 12,365 13,118 33.93 17.49 1.32 5.45 14.36 3.600.86 5.80 11.50 0.97 1.09 0.67 0.05 2.91 08F049310BR BR1,2 7/25/2008 8.26 19.38 26.04 4.32 0.31 9,135 5.84 0.42 12,351 13,117 36.71 18.44 1.29 6.05 14.18 3.460.87 5.22 10.40 1.12 1.340.68 0.05 0.19 08F056350BR BR1,2 8/25/2008 7.26 19.47 25.32 4.44 31.72 38.52 0.32 9,246 5.95 42.47 51.58 0.42 12,380 45.15 54.85 13,163 32.96 17.42 1.23 4.80 16.41 4.68 0.65 4.48 12.20 1.22 1.02 0.64 0.04 2.25 08F061420BR BR1,2 9/25/2008 6.90 20.34 25.84 4.48 30.73 38.95 0.32 9,181 6.04 41.44 52.52 0.43 12,379 44.10 55.90 13,174 34.93 17.80 1.30 5.15 16.944.460.82 4.84 9.76 1.48 1.140.63 0.04 0.71 08F070880BR BR1,2 10/25/2008 8.52 19.49 26.35 4.56 30.65 38.440.33 9,331 6.19 41.62 52.19 0.45 12,669 44.37 55.63 13,505 38.34 17.67 1.33 5.52 17.664.52 0.84 4.58 7.81 0.68 1.09 0.62 0.04 -0.70 08F077970BR BR1,2 11/25/2008 8.83 18.75 25.92 4.61 31.65 37.82 0.32 9,133 6.23 42.72 51.05 0.43 12,329 45.56 54.44 13,147 38.49 17.23 1.25 5.39 14.864.540.98 4.44 8.90 0.72 1.000.57 0.04 1.59 08F082890BR BR1,2 12/25/2008 10.71 17.15 26.02 4.36 30.89 38.73 0.33 9,181 5.89 41.76 52.35 0.45 12,410 44.38 55.62 13,187 33.75 17.33 1.34 5.61 15.85 3.95 0.82 5.79 9.33 0.50 1.15 0.76 0.05 3.77 BR Count 12 12 12 12 12 10 10 12 12 12 10 10 12 12 10 10 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12

BR Average 9.82 18.29 26.34 4.38 31.21 38.01 0.31 9,120 5.94 42.40 51.63 0.43 12,381 45.09 54.91 13,162 35.73 17.68 1.29 5.35 15.15 4.100.88 5.51 10.42 0.82 1.17 0.67 0.04 1.19 BR Max 14.52 20.34 28.67 4.61 32.13 38.95 0.33 9,331 6.23 43.34 52.52 0.45 12,669 46.03 55.90 13,505 38.49 18.97 1.35 6.05 17.664.68 1.00 7.10 13.70 1.48 1.47 0.78 0.05 3.77 BR Min 6.90 16.36 25.32 4.19 30.29 36.59 0.29 8,765 5.69 41.44 50.81 0.40 12,274 44.10 53.97 13,054 32.96 16.78 1.17 4.80 13.09 3.160.65 4.44 7.81 0.28 1.000.57 0.04 -2.48 BR StdDev 2.47 1.39 1.11 0.14 0.67 0.79 0.01 163.91 0.16 0.63 0.61 0.02 98.96 0.65 0.65 114.63 1.80 0.640.05 0.33 1.57 0.500.10 0.86 1.89 0.37 0.160.06 0.01 1.81 08F009770SC SC1,3,4 1/25/2008 10.06 15.98 24.43 4.63 31.36 39.57 0.48 9,477 6.13 41.50 52.37 0.63 12,541 44.21 55.79 13,360 36.39 18.30 1.28 6.80 12.12 3.31 0.90 5.64 13.20 0.50 1.240.05 0.69 -0.42 08F009780SC SC2 1/25/2008 10.26 17.87 26.30 4.28 31.38 38.040.32 9,105 5.81 42.58 51.61 0.44 12,354 45.20 54.80 13,115 35.68 17.78 1.37 5.32 14.664.15 0.91 7.08 12.50 0.64 1.61 0.05 0.85 -2.60 08F009790SC SC6 1/25/2008 10.06 15.55 24.05 4.65 31.38 39.92 0.49 9,579 6.12 41.31 52.56 0.65 12,611 44.01 55.99 13,433 35.88 18.20 1.31 6.73 11.95 3.400.99 5.75 13.00 0.64 1.340.04 0.69 0.08 08F009800SC SC7 1/25/2008 9.08 16.10 23.72 4.66 31.12 40.500.55 9,661 6.10 40.80 53.10 0.73 12,665 43.45 56.55 13,488 37.20 18.30 1.28 7.60 11.19 3.23 0.95 5.19 12.00 0.72 1.200.05 0.65 0.44 08F013760SC SC2 2/25/2008 12.46 16.29 26.72 4.46 30.89 37.93 0.40 9,143 6.08 42.16 51.76 0.55 12,476 44.89 55.11 13,284 34.07 16.56 1.20 4.71 15.174.140.93 5.80 13.00 0.32 1.15 0.04 0.69 2.22 08F013750SC SC4,3,1 2/25/2008 12.31 14.65 25.16 4.70 31.02 39.12 0.53 9,441 6.28 41.45 52.27 0.70 12,614 44.23 55.77 13,459 34.62 19.00 1.19 6.41 12.15 3.53 1.10 4.79 11.70 0.44 1.01 0.04 0.60 3.42 08F013770SC SC6 2/25/2008 11.92 14.56 24.74 4.67 31.17 39.42 0.53 9,514 6.20 41.42 52.38 0.70 12,642 44.16 55.84 13,478 35.10 17.82 1.17 7.11 11.98 3.33 1.07 4.78 12.20 0.61 0.91 0.04 0.59 3.29 08F013780SC SC7 2/25/2008 11.87 14.67 24.80 4.63 31.16 39.41 0.54 9,525 6.15 41.44 52.41 0.71 12,666 44.16 55.84 13,497 35.41 17.92 1.16 7.23 12.09 3.39 1.05 4.80 11.60 0.50 1.02 0.04 0.60 3.19 08F019710SC SC2 3/25/2008 13.19 17.25 28.16 4.32 30.36 37.15 0.35 8,872 6.02 42.26 51.72 0.48 12,350 44.97 55.03 13,141 34.23 16.78 1.19 5.52 12.64 2.960.95 5.71 15.00 0.46 1.240.05 0.67 2.60 08F019700SC SC4,3,1 3/25/2008 11.70 13.52 23.64 4.92 30.90 40.55 0.68 9,735 6.44 40.46 53.10 0.89 12,749 43.25 56.75 13,626 36.97 18.54 1.10 8.08 12.55 2.52 1.14 4.11 11.70 0.48 0.89 0.04 0.50 1.38 08F019720SC SC6 3/25/2008 11.58 14.08 24.03 4.77 31.12 40.09 0.60 9,649 6.27 40.96 52.77 0.79 12,701 43.70 56.30 13,551 37.27 18.61 1.19 8.08 10.73 2.57 1.03 4.49 11.70 0.440.940.04 0.54 2.37 08F019730SC SC7 3/25/2008 11.77 14.00 24.12 5.21 31.03 39.63 0.60 9,609 6.87 40.90 52.23 0.79 12,664 43.91 56.09 13,598 35.49 17.53 1.20 7.37 11.73 2.73 0.88 5.26 13.50 0.35 1.03 0.04 0.62 2.27 08F028420SC SC2 4/25/2008 10.20 17.47 25.89 4.43 31.78 37.900.35 9,198 5.97 42.88 51.15 0.47 12,411 45.61 54.39 13,200 35.98 18.54 1.32 6.14 13.09 3.73 0.83 6.54 10.30 1.00 1.29 0.05 0.75 0.44 08F028410SC SC4,3,1 4/25/2008 8.88 15.24 22.77 4.98 32.07 40.19 0.56 9,741 6.44 41.52 52.04 0.73 12,612 44.38 55.62 13,480 35.51 18.12 1.27 7.57 11.93 3.540.81 4.39 10.90 0.79 0.91 0.04 0.56 3.66 08F028430SC SC6 4/25/2008 8.06 15.44 22.26 5.02 32.44 40.29 0.54 9,778 6.46 41.72 51.82 0.70 12,577 44.60 55.40 13,445 36.07 18.54 1.27 8.50 11.34 3.32 0.79 4.39 9.64 0.98 0.81 0.04 0.55 3.76 08F028440SC SC7 4/25/2008 9.36 14.92 22.88 5.03 31.93 40.15 0.56 9,716 6.52 41.41 52.07 0.73 12,599 44.30 55.70 13,478 38.81 20.03 1.30 9.52 10.93 3.29 0.82 4.41 7.37 0.92 0.82 0.04 0.54 1.20 08F034000SC SC1,2,3,4 5/25/2008 8.79 18.62 25.77 4.31 32.23 37.68 0.30 9,208 5.81 43.43 50.76 0.41 12,405 46.11 53.89 13,170 33.51 17.21 1.32 5.40 17.694.78 0.74 7.84 10.50 0.88 0.940.04 0.64 -1.49 08F034010SC SC4,3,2,1 5/25/2008 8.19 15.94 22.82 4.95 32.10 40.13 0.59 9,780 6.41 41.59 52.00 0.76 12,672 44.44 55.56 13,540 36.30 18.48 1.14 8.05 12.79 3.65 1.01 5.94 9.86 0.61 0.840.04 0.50 0.79 08F034020SC SC6 5/25/2008 8.74 15.21 22.62 4.96 32.21 40.21 0.62 9,823 6.42 41.62 51.96 0.80 12,695 44.47 55.53 13,565 34.76 18.05 1.15 7.80 13.53 3.69 0.93 5.97 10.60 0.940.78 0.04 0.50 1.26 08F034030SC SC7 5/25/2008 8.05 16.08 22.84 5.00 32.17 39.99 0.61 9,778 6.48 41.69 51.82 0.79 12,672 44.58 55.42 13,550 34.76 17.74 1.14 7.84 13.43 3.67 0.89 5.99 10.30 0.860.88 0.04 0.51 1.95 08F041150SC SC1,2,3,4 6/25/2008 7.11 20.44 26.10 4.13 0.29 9,177 5.59 0.39 12,417 13,153 32.57 17.17 1.32 5.15 14.63 3.600.78 5.93 11.90 1.15 1.08 0.04 0.69 3.99 08F041160SC SC1,2,3,4 6/25/2008 6.87 17.48 23.15 4.78 0.57 9,758 6.22 0.74 12,698 13,539 35.28 17.87 1.20 7.73 13.04 3.15 0.92 3.96 11.00 0.740.97 0.04 0.57 3.53 08F041170SC SC6 6/25/2008 6.88 17.85 23.50 4.74 0.55 9,691 6.20 0.72 12,668 13,505 35.18 18.07 1.21 7.75 13.31 3.25 0.96 3.97 11.10 0.87 1.000.05 0.58 2.70 08F041180SC SC7 6/25/2008 6.81 17.74 23.34 4.72 0.55 9,729 6.15 0.72 12,691 13,523 35.86 18.33 1.22 8.14 11.35 2.760.94 4.53 11.50 0.75 0.87 0.04 0.53 3.18 08F049240SC SC1,2,3,4 7/25/2008 8.04 20.05 26.48 4.21 0.29 9,122 5.73 0.40 12,408 13,162 35.87 18.12 1.32 6.25 13.92 3.360.91 5.55 12.50 1.54 1.13 0.04 0.65 -1.16 08F049250SC SC1,2,3,4 7/25/2008 7.72 16.98 23.39 4.80 0.63 9,757 6.26 0.82 12,735 13,586 36.52 18.97 1.22 8.21 11.47 2.78 0.95 4.48 8.88 1.360.940.04 0.56 3.62 08F049260SC SC6 7/25/2008 7.29 18.09 24.06 4.65 0.52 9,607 6.13 0.68 12,650 13,476 36.34 18.65 1.24 7.45 12.61 3.07 0.86 5.19 10.40 1.13 1.05 0.04 0.61 1.36 08F049270SC SC7 7/25/2008 7.50 17.71 23.88 4.68 0.56 9,639 6.15 0.73 12,663 13,492 37.18 18.86 1.26 7.58 12.08 2.88 0.89 4.78 10.10 1.000.97 0.04 0.59 1.79 08F056290SC SC1,2,3,4 8/25/2008 6.68 17.67 23.17 4.94 32.08 39.81 0.52 9,733 6.43 41.76 51.82 0.68 12,669 44.63 55.37 13,538 33.67 17.53 1.22 6.70 15.674.25 0.68 4.35 11.20 0.88 0.91 0.04 0.59 2.31 08F056280SC SC4,3,2,1 8/25/2008 7.22 19.76 25.55 4.32 30.56 39.560.32 9,220 5.81 41.05 53.14 0.42 12,384 43.58 56.42 13,148 32.24 16.59 1.25 5.67 16.62 4.12 0.59 4.84 11.70 1.13 0.95 0.04 0.64 3.62 Ash Minerals

FILE: EPA-HQ-OAR-2009-0234-DRAFT-2746.xls Page 1 of 8

### Detroit Edison Monthly Fuels - 2008

Sampleid PlantPlant Units Spl Date adlresidualmoist_ttlash_arvol_ar fc_ars_ar btu_arash_dryvol_dryfc_drys_dry btu_dryvol_maffc_maf btu_maf sio2al2o3 tio2 fe2o3 caomgo k2o na2o so3 p2o5 bao sromn02 und Ash Minerals

08F056300SC SC6 8/25/2008 6.30 17.24 22.45 4.87 31.28 41.400.56 9,855 6.28 40.33 53.38 0.72 12,709 43.04 56.96 13,561 36.16 18.86 1.17 7.36 12.79 3.61 0.80 3.77 9.34 0.89 0.860.03 0.50 3.86 08F056310SC SC7 8/25/2008 6.64 17.62 23.09 4.83 31.30 40.78 0.51 9,724 6.28 40.70 53.02 0.67 12,644 43.43 56.57 13,490 35.48 17.20 1.21 7.30 14.39 3.58 0.78 4.15 10.90 1.060.860.04 0.55 2.50 08F061360SC SC3 9/25/2008 6.63 17.98 23.42 4.85 31.15 40.59 0.53 9,702 6.33 40.67 53.00 0.69 12,669 43.42 56.58 13,525 34.72 17.70 1.21 7.22 14.17 3.63 0.83 3.83 10.30 1.55 0.89 0.03 0.52 3.40 08F061350SC SC4,2,1 9/25/2008 6.53 20.80 25.97 4.37 30.68 38.99 0.31 9,179 5.90 41.44 52.66 0.42 12,399 44.04 55.96 13,176 33.65 17.19 1.25 5.57 16.03 4.35 0.77 4.42 9.88 1.64 1.060.04 0.60 3.55 08F061370SC SC6 9/25/2008 6.64 18.31 23.73 4.73 31.09 40.440.50 9,642 6.21 40.76 53.03 0.66 12,643 43.46 56.54 13,480 33.15 17.29 1.21 6.76 14.60 3.740.92 4.10 13.23 1.37 0.840.03 0.53 2.23 08F061380SC SC7 9/25/2008 6.66 18.81 24.22 4.67 30.66 40.45 0.47 9,539 6.16 40.46 53.38 0.62 12,588 43.12 56.88 13,414 33.57 17.39 1.21 6.85 15.24 3.72 0.81 3.95 11.60 1.640.85 0.03 0.54 2.60 08F070820SC SC3 10/25/2008 7.54 18.27 24.43 4.76 31.63 39.18 0.53 9,646 6.30 41.86 51.84 0.70 12,765 44.67 55.33 13,624 37.15 17.53 1.17 6.36 14.75 5.01 0.81 3.75 8.23 0.53 0.87 0.03 0.54 3.27 08F070810SC SC4,2,1 10/25/2008 7.88 19.18 25.55 4.38 31.52 38.55 0.32 9,160 5.88 42.34 51.78 0.43 12,304 44.98 55.02 13,072 35.72 17.06 1.32 5.04 17.884.460.70 5.02 7.47 1.10 1.05 0.03 0.66 2.49 08F070830SC SC6 10/25/2008 7.32 17.55 23.59 5.01 31.36 40.040.55 9,688 6.56 41.04 52.40 0.72 12,678 43.93 56.07 13,568 36.77 18.01 1.21 7.12 14.31 3.51 0.91 3.70 10.20 0.87 0.93 0.04 0.54 1.88 08F070840SC SC7 10/25/2008 7.40 17.31 23.43 4.89 31.28 40.400.56 9,705 6.39 40.85 52.76 0.73 12,675 43.64 56.36 13,540 36.45 18.01 1.14 7.64 13.58 3.45 0.95 3.86 9.74 0.740.83 0.04 0.52 3.05 08F077910SC SC3 11/25/2008 8.70 15.73 23.06 5.03 31.33 40.57 0.57 9,736 6.54 40.73 52.74 0.74 12,655 43.58 56.42 13,540 38.63 17.87 1.16 7.36 12.37 3.700.90 3.96 8.79 0.59 0.840.03 0.49 3.31 08F077900SC SC4,2,1 11/25/2008 8.84 18.58 25.78 4.53 31.05 38.640.34 9,207 6.10 41.83 52.06 0.45 12,405 44.55 55.45 13,211 37.21 16.96 1.25 4.94 16.164.71 0.81 4.98 7.60 0.45 1.02 0.03 0.57 3.31 08F077920SC SC6 11/25/2008 9.03 15.22 22.88 5.03 31.81 40.28 0.58 9,773 6.52 41.25 52.23 0.75 12,672 44.13 55.87 13,556 39.75 18.30 1.20 7.96 12.78 3.72 0.93 4.06 8.48 0.640.85 0.03 0.50 0.80 08F077930SC SC7 11/25/2008 8.60 15.83 23.07 5.01 31.33 40.59 0.56 9,729 6.51 40.73 52.76 0.72 12,646 43.56 56.44 13,526 40.18 18.19 1.19 7.77 12.99 3.73 1.16 3.87 7.74 0.560.840.03 0.49 1.26 08F082830SC SC3 12/25/2008 9.26 15.26 23.11 4.63 30.71 41.560.54 9,801 6.02 39.93 54.05 0.71 12,746 42.49 57.51 13,562 08F082820SC SC4,2,1 12/25/2008 9.17 17.93 25.46 4.26 30.83 39.460.34 9,325 5.71 41.35 52.93 0.45 12,509 43.86 56.14 13,267 36.00 18.41 1.36 5.55 16.744.17 0.92 5.94 5.78 0.81 1.28 0.04 0.82 2.18 08F082840SC SC6 12/25/2008 9.04 15.62 23.25 4.59 30.62 41.540.52 9,777 5.98 39.89 54.12 0.68 12,739 42.43 57.57 13,550 35.77 18.78 1.29 7.58 14.23 3.47 0.90 4.97 7.34 0.64 1.02 0.04 0.70 3.27 08F082850SC SC7 12/25/2008 9.41 15.53 23.48 4.52 31.31 40.69 0.51 9,736 5.91 40.91 53.18 0.66 12,723 43.48 56.52 13,522 33.74 17.76 1.22 6.52 14.32 3.48 0.85 5.13 10.60 0.87 1.02 0.04 0.71 3.74 SC Count 48 48 48 48 48 40 40 48 48 48 40 40 48 48 40 40 48 47 47 47 47 47 47 47 47 47 47 47 47 47 47

SC Average 8.76 16.87 24.17 4.70 31.34 39.78 0.50 9,556 6.19 41.32 52.45 0.65 12,601 44.07 55.93 13,433 35.72 17.97 1.23 6.96 13.53 3.58 0.89 4.89 10.60 0.840.99 0.04 0.60 2.16 SC Max 13.19 20.80 28.16 5.21 32.44 41.560.68 9,855 6.87 43.43 54.12 0.89 12,765 46.11 57.57 13,626 40.18 20.03 1.37 9.52 17.88 5.01 1.16 7.84 15.00 1.64 1.61 0.05 0.85 3.99 SC Min 6.30 13.52 22.26 4.13 30.36 37.15 0.29 8,872 5.59 39.89 50.76 0.39 12,304 42.43 53.89 13,072 32.24 16.56 1.10 4.71 10.73 2.52 0.59 3.70 5.78 0.32 0.78 0.03 0.49 -2.60 SC StdDev 1.86 1.76 1.34 0.26 0.52 1.040.11 251.90 0.26 0.75 0.71 0.13 126.47 0.77 0.77 160.68 1.69 0.700.06 1.08 1.79 0.560.11 0.94 1.91 0.340.17 0.01 0.09 1.52 08F009830HB HB1 1/25/2008 6.68 1.23 7.83 9.56 29.21 53.41 0.74 12,579 10.37 31.69 57.94 0.80 13,647 35.36 64.64 15,225 55.60 27.45 0.93 6.63 1.37 1.15 2.95 0.62 1.11 0.52 0.160.17 0.05 1.29 08F013810HB HB1 2/25/2008 6.48 1.37 7.76 8.15 30.35 53.75 0.79 12,671 8.83 32.90 58.27 0.86 13,737 36.09 63.91 15,068 55.27 29.13 1.10 6.07 1.79 1.15 2.92 0.56 0.76 0.460.160.17 0.02 0.44 08F019760HB HB1 3/25/2008 5.28 2.13 7.30 8.93 31.38 52.39 0.91 12,409 9.64 33.85 56.51 0.98 13,386 37.46 62.54 14,813 55.48 28.40 1.05 8.18 1.86 1.04 2.91 0.60 1.80 0.89 0.19 0.21 0.03 -2.64 08F028500HB HB1 4/25/2008 6.15 2.22 8.23 8.85 31.21 51.700.83 12,261 9.64 34.02 56.34 0.90 13,361 37.65 62.35 14,787 52.32 28.51 1.18 6.82 1.71 0.95 2.39 0.52 1.05 1.13 0.18 0.20 0.03 3.01 08F034060HB HB1 5/25/2008 6.09 1.77 7.75 8.53 30.29 53.43 0.75 12,637 9.24 32.83 57.93 0.81 13,698 36.17 63.83 15,094 55.75 30.30 1.26 4.96 1.740.95 2.61 0.48 0.27 0.32 0.100.12 0.02 1.12 08F041210HB HB1 6/25/2008 5.93 1.86 7.68 8.23 30.91 53.18 0.80 12,797 8.92 33.48 57.60 0.87 13,862 36.76 63.24 15,219 55.77 28.29 1.09 5.70 1.42 1.01 2.81 0.61 1.09 0.28 0.15 0.17 0.04 1.57 08F049300HB HB1 7/25/2008 6.36 2.30 8.51 8.16 30.64 52.69 0.81 12,566 8.92 33.49 57.59 0.89 13,735 36.77 63.23 15,079 55.12 29.25 1.16 5.91 1.63 0.95 2.67 0.46 1.23 0.700.13 0.14 0.03 0.62 08F056340HB HB1 8/25/2008 6.07 2.88 8.78 6.90 32.20 52.12 0.80 12,659 7.57 35.30 57.14 0.88 13,877 38.19 61.81 15,013 52.46 29.72 1.33 6.31 2.62 1.05 2.25 0.70 1.50 0.32 0.15 0.22 0.03 1.34 08F061410HB HB1 9/25/2008 5.53 3.98 9.29 7.65 31.18 51.87 0.83 12,383 8.44 34.38 57.19 0.92 13,651 37.55 62.45 14,909 52.03 28.61 1.26 6.74 3.27 1.37 2.37 0.65 1.31 1.400.200.23 0.03 0.53 08F070870HB HB1 10/25/2008 6.65 4.70 11.04 7.17 31.84 49.95 0.73 11,978 8.06 35.79 56.15 0.82 13,464 38.93 61.07 14,644 50.90 27.68 1.39 6.72 4.56 1.18 2.05 0.62 0.83 0.740.22 0.27 0.03 2.81 08F077960HB HB1 11/25/2008 6.07 2.85 8.75 7.24 31.33 52.69 0.80 12,564 7.94 34.33 57.74 0.87 13,768 37.29 62.71 14,955 54.92 29.88 1.32 6.50 2.76 1.13 2.35 0.72 0.85 0.48 0.18 0.25 0.03 -1.37 08F082880HB HB1 12/25/2008 6.77 2.00 8.63 8.13 29.45 53.78 0.81 12,553 8.90 32.23 58.87 0.89 13,740 35.38 64.62 15,082 54.17 28.04 1.13 6.91 1.91 1.07 2.69 0.80 1.17 0.52 0.18 0.23 0.03 1.15 HB Count 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12

HB Average 6.17 2.44 8.46 8.13 30.83 52.58 0.80 12,505 8.87 33.69 57.44 0.87 13,661 36.97 63.03 14,991 54.15 28.77 1.18 6.45 2.22 1.08 2.58 0.61 1.08 0.65 0.17 0.20 0.03 0.82 HB Max 6.77 4.70 11.04 9.56 32.20 53.78 0.91 12,797 10.37 35.79 58.87 0.98 13,877 38.93 64.64 15,225 55.77 30.30 1.39 8.18 4.56 1.37 2.95 0.80 1.80 1.400.22 0.27 0.05 3.01 HB Min 5.28 1.23 7.30 6.90 29.21 49.95 0.73 11,978 7.57 31.69 56.15 0.80 13,361 35.36 61.07 14,644 50.90 27.45 0.93 4.96 1.37 0.95 2.05 0.46 0.27 0.28 0.100.12 0.02 -2.64 HB StdDev 0.45 1.03 1.00 0.79 0.89 1.09 0.05 219.57 0.80 1.19 0.81 0.05 171.12 1.09 1.09 176.20 1.73 0.89 0.13 0.78 0.940.12 0.30 0.10 0.39 0.35 0.03 0.05 0.01 1.57 08F009820MO MO1,2,3,4 1/25/2008 9.40 10.79 19.18 6.76 31.51 42.560.67 10,269 8.36 38.99 52.65 0.83 12,705 42.54 57.46 13,864 43.00 22.83 1.32 7.54 8.47 2.31 1.49 0.86 8.87 0.55 0.37 0.25 0.03 2.11 08F013800MO MO1,2,3,4 2/25/2008 9.40 10.38 18.80 6.80 32.46 41.93 0.71 10,307 8.38 39.98 51.64 0.87 12,694 43.64 56.36 13,855 42.20 23.16 1.26 8.30 10.56 2.61 1.58 0.86 7.02 0.83 0.31 0.27 0.03 1.01 08F019750MO MO1,2,3,4 3/25/2008 8.54 11.24 18.82 6.78 32.34 42.060.70 10,297 8.35 39.84 51.81 0.86 12,685 43.47 56.53 13,840 43.02 21.84 1.16 8.04 9.28 2.15 1.39 1.01 9.00 0.69 0.400.26 0.03 1.73 08F028490MO MO1,2,3,4 4/25/2008 8.17 10.76 18.05 6.84 32.44 42.660.73 10,442 8.35 39.59 52.06 0.89 12,742 43.20 56.80 13,903 42.50 22.47 1.30 8.67 7.65 2.07 1.41 0.84 7.46 1.05 0.35 0.27 0.02 3.94 08F034050MO MO1,2,3,4 5/25/2008 7.63 11.49 18.24 6.81 31.77 43.18 0.76 10,479 8.33 38.85 52.82 0.93 12,818 42.38 57.62 13,982 41.50 22.49 1.31 9.01 10.32 2.67 1.52 1.24 6.62 0.62 0.340.26 0.03 2.07 08F041200MO MO1,2,3,4 6/25/2008 6.74 12.68 18.57 6.84 0.74 10,399 8.39 0.90 12,770 13,940 43.21 22.68 1.31 8.90 8.29 1.97 1.55 0.89 7.19 0.63 0.340.27 0.03 2.74 08F049290MO MO1,2,3,4 7/25/2008 7.17 12.31 18.60 7.01 0.77 10,429 8.61 0.95 12,811 14,018 44.79 23.42 1.34 8.88 8.02 2.01 1.62 0.91 5.16 0.940.37 0.27 0.03 2.24

FILE: EPA-HQ-OAR-2009-0234-DRAFT-2746.xls Page 2 of 8

### Detroit Edison Monthly Fuels - 2008

Sampleid PlantPlant Units Spl Date adlresidualmoist_ttlash_arvol_ar fc_ars_ar btu_arash_dryvol_dryfc_drys_dry btu_dryvol_maffc_maf btu_maf sio2al2o3 tio2 fe2o3 caomgo k2o na2o so3 p2o5 bao sromn02 und Ash Minerals

08F056330MO MO1,2,3,4 8/25/2008 5.64 12.99 17.90 7.10 32.18 42.83 0.73 10,474 8.64 39.19 52.17 0.88 12,757 42.90 57.10 13,964 42.84 22.80 1.24 8.73 9.36 2.28 1.58 0.90 5.30 0.95 0.360.27 0.03 3.36 08F061400MO MO1,2,3,4 9/25/2008 5.99 14.52 19.64 6.77 31.31 42.28 0.66 10,182 8.42 38.97 52.61 0.82 12,671 42.55 57.45 13,836 40.18 21.20 1.24 7.83 11.62 2.82 1.40 0.94 7.99 2.000.400.28 0.02 2.08 08F070860MO MO1,2,3,4 10/25/2008 7.24 13.57 19.83 6.60 32.27 41.31 0.64 10,112 8.23 40.25 51.52 0.80 12,613 43.86 56.14 13,743 39.32 20.89 1.16 7.74 11.91 2.72 1.31 0.87 9.00 0.92 0.39 0.27 0.02 3.48 08F077950MO MO1,2,3,4 11/25/2008 8.01 13.78 20.69 6.52 32.01 40.78 0.59 9,980 8.22 40.36 51.42 0.74 12,583 43.98 56.02 13,710 43.28 20.10 1.24 7.45 11.85 2.98 1.24 0.96 6.32 0.93 0.38 0.27 0.02 2.98 08F082870MO MO1,2,3,4 12/25/2008 8.29 12.40 19.66 6.62 31.83 41.88 0.61 10,158 8.24 39.62 52.13 0.75 12,644 43.18 56.82 13,780 42.20 21.83 1.33 7.83 11.61 2.64 1.38 1.12 6.49 0.92 0.41 0.32 0.03 1.89 MO Count 12 12 12 12 12 10 10 12 12 12 10 10 12 12 10 10 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12

MO Average 7.69 12.24 19.00 6.79 32.01 42.15 0.69 10,294 8.38 39.56 52.08 0.85 12,708 43.17 56.83 13,870 42.34 22.14 1.27 8.24 9.91 2.44 1.46 0.95 7.20 0.92 0.37 0.27 0.03 2.47 MO Max 9.40 14.52 20.69 7.10 32.46 43.18 0.77 10,479 8.64 40.36 52.82 0.95 12,818 43.98 57.62 14,018 44.79 23.42 1.34 9.01 11.91 2.98 1.62 1.24 9.00 2.000.41 0.32 0.03 3.94 MO Min 5.64 10.38 17.90 6.52 31.31 40.78 0.59 9,980 8.22 38.85 51.42 0.74 12,583 42.38 56.02 13,710 39.32 20.10 1.16 7.45 7.65 1.97 1.24 0.84 5.16 0.55 0.31 0.25 0.02 1.01 MO StdDev 1.20 1.33 0.83 0.16 0.40 0.72 0.06 159.93 0.13 0.55 0.49 0.07 74.44 0.57 0.57 96.02 1.46 1.000.06 0.57 1.600.340.12 0.12 1.33 0.38 0.03 0.02 0.00 0.84 08F009760RR RR2,3 1/25/2008 11.00 15.16 24.49 6.19 31.11 38.21 0.32 9,150 8.19 41.21 50.60 0.42 12,118 44.88 55.12 13,199 42.29 19.56 1.31 5.67 12.88 3.24 1.02 1.09 8.97 0.900.55 0.28 0.02 2.22 08F013740RR RR2,3 2/25/2008 12.35 12.96 23.71 6.70 32.25 37.35 0.35 9,203 8.78 42.27 48.95 0.46 12,063 46.34 53.67 13,224 42.10 19.81 1.19 4.47 13.41 3.56 1.19 1.23 8.66 1.11 0.440.27 0.02 2.54 08F019690RR RR2,3 3/25/2008 12.67 13.83 24.75 6.31 30.78 38.17 0.31 9,151 8.38 40.90 50.73 0.41 12,161 44.64 55.36 13,273 45.95 20.87 1.20 5.15 11.37 2.65 1.24 1.16 8.11 1.19 0.51 0.26 0.02 0.32 08F028400RR RR2,3 4/25/2008 10.76 13.38 22.70 6.24 31.57 39.49 0.34 9,460 8.07 40.85 51.09 0.44 12,239 44.43 55.57 13,313 40.91 19.26 1.19 6.33 12.02 3.33 1.22 1.25 9.70 1.48 0.52 0.29 0.03 2.47 08F033990RR RR2,3 5/25/2008 9.48 12.92 21.18 7.05 31.72 40.060.39 9,748 8.95 40.24 50.82 0.49 12,367 44.19 55.81 13,582 44.77 22.07 1.26 5.85 10.98 3.21 1.79 1.41 7.02 0.83 0.41 0.23 0.02 0.15 08F041140RR RR2,3 6/25/2008 8.21 15.17 22.13 7.06 0.39 9,543 9.07 0.50 12,256 13,478 43.42 21.27 1.25 6.20 11.66 3.18 1.62 0.99 7.89 1.42 0.460.26 0.03 0.35 08F049230RR RR2,3 7/25/2008 8.26 17.58 24.39 6.36 0.30 9,197 8.41 0.40 12,163 13,280 44.41 22.25 1.32 5.30 10.16 2.66 1.54 1.08 7.00 0.98 0.51 0.25 0.02 2.52 08F056270RR RR2,3 8/25/2008 7.15 18.10 23.96 5.83 31.30 38.91 0.32 9,257 7.67 41.16 51.17 0.42 12,173 44.58 55.42 13,184 37.93 18.73 1.24 5.12 16.09 3.90 1.03 1.22 8.70 1.81 0.53 0.30 0.02 3.38 08F061340RR RR2,3 9/25/2008 7.32 18.28 24.26 6.30 30.79 38.65 0.34 9,224 8.32 40.65 51.03 0.45 12,179 44.34 55.66 13,285 38.92 19.04 1.34 5.96 16.84 3.97 1.10 1.20 8.61 1.860.58 0.30 0.02 0.26 08F070800RR RR2,3 10/25/2008 8.47 16.68 23.74 6.22 31.70 38.340.38 9,294 8.16 41.56 50.28 0.49 12,187 45.26 54.74 13,270 40.91 20.58 1.24 6.47 13.79 3.04 1.29 0.94 8.05 0.79 0.47 0.27 0.02 2.14 08F077890RR RR2,3 11/25/2008 9.06 16.88 24.41 6.38 31.48 37.72 0.34 9,178 8.45 41.65 49.90 0.45 12,141 45.49 54.51 13,261 42.72 19.25 1.27 5.89 15.904.23 1.16 0.92 7.37 1.140.55 0.32 0.02 -0.74 08F082810RR RR2,3 12/25/2008 9.41 15.22 23.20 6.44 30.37 39.99 0.35 9,409 8.39 39.55 52.06 0.46 12,251 43.17 56.83 13,372 RR Count 12 12 12 12 12 10 10 12 12 12 10 10 12 12 10 10 12 11 11 11 11 11 11 11 11 11 11 11 11 11 11

RR Average 9.51 15.51 23.58 6.42 31.31 38.69 0.34 9,318 8.40 41.00 50.66 0.45 12,192 44.73 55.27 13,310 42.21 20.24 1.26 5.67 13.19 3.36 1.29 1.14 8.19 1.23 0.500.28 0.02 1.42 RR Max 12.67 18.28 24.75 7.06 32.25 40.060.39 9,748 9.07 42.27 52.06 0.50 12,367 46.34 56.83 13,582 45.95 22.25 1.34 6.47 16.844.23 1.79 1.41 9.70 1.860.58 0.32 0.03 3.38 RR Min 7.15 12.92 21.18 5.83 30.37 37.35 0.30 9,150 7.67 39.55 48.95 0.40 12,063 43.17 53.67 13,184 37.93 18.73 1.19 4.47 10.16 2.65 1.02 0.92 7.00 0.79 0.41 0.23 0.02 -0.74 RR StdDev 1.83 1.97 1.09 0.36 0.56 0.92 0.03 186.03 0.39 0.76 0.83 0.03 78.33 0.85 0.85 116.21 2.44 1.240.05 0.61 2.25 0.51 0.25 0.15 0.84 0.37 0.05 0.03 0.00 1.36 08F009810TC TC7,8,9 1/25/2008 11.64 9.66 20.18 6.22 31.39 42.22 0.69 10,177 7.79 39.32 52.89 0.86 12,750 42.64 57.36 13,827 40.86 21.04 1.35 9.91 9.58 2.67 1.42 1.13 10.00 0.82 0.460.03 0.32 0.41 08F013790TC TC7,8,9 2/25/2008 12.06 8.02 19.11 5.90 31.98 43.000.77 10,446 7.30 39.54 53.16 0.95 12,914 42.65 57.35 13,930 40.42 20.88 1.30 10.12 10.50 2.79 1.44 0.87 6.20 0.83 0.440.02 0.31 3.88 08F019740TC TC7,8,9 3/25/2008 11.37 8.77 19.14 6.12 32.08 42.660.75 10,363 7.56 39.68 52.76 0.92 12,816 42.93 57.07 13,865 43.44 20.76 1.19 8.86 9.00 2.20 1.49 1.20 8.36 0.700.45 0.03 0.31 2.01 08F028470TC TC7,8,9 4/25/2008 10.36 9.98 19.31 6.15 32.07 42.47 0.74 10,318 7.62 39.75 52.63 0.91 12,787 43.03 56.97 13,842 42.40 20.88 1.26 9.86 9.42 2.64 1.35 1.14 8.44 1.17 0.42 0.03 0.31 0.68 08F034040TC TC7,8,9 5/25/2008 8.82 8.77 16.82 6.36 32.98 43.85 0.85 10,870 7.64 39.65 52.71 1.02 13,067 42.93 57.07 14,148 40.25 20.59 1.30 10.89 10.48 2.76 1.45 1.41 6.71 0.55 0.37 0.03 0.30 2.91 08F041190TC TC7,8,9 6/25/2008 8.09 10.37 17.62 6.03 0.83 10,757 7.32 1.00 13,058 14,089 41.08 20.88 1.34 12.04 8.53 2.13 1.51 1.13 6.93 0.600.39 0.03 0.33 3.08 08F056320TC TC7,8,9 8/25/2008 7.11 13.65 19.79 6.13 31.82 42.260.70 10,265 7.64 39.68 52.68 0.87 12,798 42.96 57.04 13,857 39.27 19.24 1.17 9.27 12.04 2.95 1.26 1.31 7.65 1.15 0.43 0.02 0.28 3.96 08F049280TC TC7,8,9 8/31/2008 9.00 11.42 19.39 6.13 0.79 10,413 7.61 0.98 12,918 13,982 42.63 21.30 1.30 10.89 8.75 2.19 1.47 1.25 6.39 0.85 0.45 0.03 0.32 2.18 08F061390TC TC7,8,9 9/25/2008 7.18 13.91 20.09 6.49 31.50 41.92 0.69 10,171 8.12 39.42 52.46 0.86 12,729 42.91 57.09 13,853 39.23 19.65 1.24 8.63 12.36 3.07 1.35 1.01 7.41 2.17 0.47 0.02 0.31 3.08 08F070850TC TC7,8,9 10/25/2008 7.52 12.28 18.88 6.98 32.18 41.960.73 10,254 8.61 39.67 51.72 0.90 12,640 43.41 56.59 13,831 40.13 19.67 1.14 8.72 11.77 3.72 1.51 0.93 7.04 0.92 0.440.02 0.31 3.68 08F077940TC TC7,8,9 11/25/2008 8.60 12.43 19.96 6.59 32.36 41.08 0.68 10,151 8.23 40.44 51.33 0.85 12,682 44.06 55.94 13,820 41.45 18.72 1.16 9.11 12.89 3.46 1.29 1.02 7.93 0.77 0.45 0.02 0.31 1.42 08F082860TC TC7,8,9 12/25/2008 8.85 11.51 19.34 6.62 31.20 42.840.73 10,292 8.20 38.68 53.11 0.90 12,760 42.14 57.86 13,900 41.08 20.72 1.31 10.42 11.23 2.57 1.44 1.13 4.96 0.95 0.45 0.03 0.35 3.36 TC Count 12 12 12 12 12 10 10 12 12 12 10 10 12 12 10 10 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12

TC Average 9.22 10.90 19.14 6.31 31.96 42.43 0.75 10,373 7.80 39.58 52.55 0.92 12,827 42.97 57.03 13,912 41.02 20.36 1.26 9.89 10.55 2.76 1.42 1.13 7.34 0.960.440.03 0.31 2.55 TC Max 12.06 13.91 20.18 6.98 32.98 43.85 0.85 10,870 8.61 40.44 53.16 1.02 13,067 44.06 57.86 14,148 43.44 21.30 1.35 12.04 12.89 3.72 1.51 1.41 10.00 2.17 0.47 0.03 0.35 3.96 TC Min 7.11 8.02 16.82 5.90 31.20 41.08 0.68 10,151 7.30 38.68 51.33 0.85 12,640 42.14 55.94 13,820 39.23 18.72 1.14 8.63 8.53 2.13 1.26 0.87 4.96 0.55 0.37 0.02 0.28 0.41 TC StdDev 1.74 1.94 1.00 0.31 0.52 0.740.06 226.72 0.40 0.44 0.58 0.06 136.64 0.50 0.50 107.98 1.30 0.82 0.07 1.04 1.500.49 0.08 0.15 1.29 0.43 0.03 0.01 0.02 1.21 Grand Count128 108 108 108 108 92 92 108 108 108 92 92 108 108 92 92 108 106 106 106 106 106 106 106 106 106 106 106 106 106 106

Grand Average 8.60 14.10 21.47 5.65 31.39 41.69 0.54 9,982 7.13 40.03 52.79 0.68 12,685 43.11 56.89 13,664 39.83 20.14 1.24 7.07 11.65 3.11 1.25 3.22 8.50 0.88 0.73 0.18 0.31 1.90 Grand Max 14.52 20.80 28.67 9.56 32.98 53.78 0.91 12,797 10.37 43.43 58.87 1.02 13,877 46.34 64.64 15,225 55.77 30.30 1.39 12.04 17.88 5.01 2.95 7.84 15.00 2.17 1.61 0.78 0.85 3.99

FILE: EPA-HQ-OAR-2009-0234-DRAFT-2746.xls Page 3 of 8

### Detroit Edison Monthly Fuels - 2008

Sampleid PlantPlant Units Spl Date adlresidualmoist_ttlash_arvol_ar fc_ars_ar btu_arash_dryvol_dryfc_drys_dry btu_dryvol_maffc_maf btu_maf sio2al2o3 tio2 fe2o3 caomgo k2o na2o so3 p2o5 bao sromn02 und Ash Minerals

Grand Min 5.28 1.23 7.30 4.13 29.21 36.59 0.29 8,765 5.59 31.69 48.95 0.39 12,063 35.36 53.67 13,054 32.24 16.560.93 4.47 1.37 0.95 0.59 0.46 0.27 0.28 0.100.02 0.02 -2.64 Grand StdDev 2.01 5.01 5.29 1.29 0.67 4.55 0.18 1,001.51 1.20 2.71 2.02 0.19 405.07 2.58 2.58 542.89 6.10 3.53 0.08 1.56 4.08 0.99 0.55 2.15 3.38 0.38 0.37 0.21 0.27 1.53

FILE: EPA-HQ-OAR-2009-0234-DRAFT-2746.xls Page 4 of 8

### Detroit Edison Monthly Fuels - 2008

Sampleid PlantPlant Units Spl Date 08F009840BR BR1,2 1/25/2008 08F013820BR BR1,2 2/25/2008 08F019770BR BR1,2 3/25/2008 08F028510BR BR1,2 4/25/2008 08F034070BR BR1,2 5/25/2008 08F041220BR BR1,2 6/25/2008 08F049310BR BR1,2 7/25/2008 08F056350BR BR1,2 8/25/2008 08F061420BR BR1,2 9/25/2008 08F070880BR BR1,2 10/25/2008 08F077970BR BR1,2 11/25/2008 08F082890BR BR1,2 12/25/2008 BR Count 12

BR Average BR Max BR Min BR StdDev 08F009770SC SC1,3,4 1/25/2008 08F009780SC SC2 1/25/2008 08F009790SC SC6 1/25/2008 08F009800SC SC7 1/25/2008 08F013760SC SC2 2/25/2008 08F013750SC SC4,3,1 2/25/2008 08F013770SC SC6 2/25/2008 08F013780SC SC7 2/25/2008 08F019710SC SC2 3/25/2008 08F019700SC SC4,3,1 3/25/2008 08F019720SC SC6 3/25/2008 08F019730SC SC7 3/25/2008 08F028420SC SC2 4/25/2008 08F028410SC SC4,3,1 4/25/2008 08F028430SC SC6 4/25/2008 08F028440SC SC7 4/25/2008 08F034000SC SC1,2,3,4 5/25/2008 08F034010SC SC4,3,2,1 5/25/2008 08F034020SC SC6 5/25/2008 08F034030SC SC7 5/25/2008 08F041150SC SC1,2,3,4 6/25/2008 08F041160SC SC1,2,3,4 6/25/2008 08F041170SC SC6 6/25/2008 08F041180SC SC7 6/25/2008 08F049240SC SC1,2,3,4 7/25/2008 08F049250SC SC1,2,3,4 7/25/2008 08F049260SC SC6 7/25/2008 08F049270SC SC7 7/25/2008 08F056290SC SC1,2,3,4 8/25/2008 08F056280SC SC4,3,2,1 8/25/2008 ba_ratioash_type esp_idx ag as ba be br cd cl co cr cu f hg mn mo ni pb sb se tl v zn 0.56Lignitic 52.940.12 1.18 508 0.13 0.04 700.85 2.91 7.97 31 0.053 13.600.62 2.09 1.35 0.16 0.45 0.06 7.81 9.67 0.59Lignitic 52.18 0.11 1.08 5560.11 0.03 800.88 3.25 7.20 31 0.053 19.200.68 2.19 1.39 0.10 0.27 0.06 10.40 4.95 0.53Lignitic 52.37 0.10 1.20 645 0.14 0.07 75 0.80 4.67 7.68 30 0.056 13.500.64 1.93 1.52 0.09 0.41 0.06 10.20 8.16 0.50Lignitic 56.740.07 1.29 5400.16 0.07 700.91 8.50 8.01 40 0.052 13.600.90 2.08 1.360.16 0.37 0.04 8.81 6.81 0.63Lignitic 54.19 0.08 0.98 412 0.13 0.06 133 0.97 2.86 8.03 30 0.037 11.17 0.54 2.29 1.49 0.24 0.28 0.04 8.58 12.92 0.57Lignitic 51.42 0.07 2.25 458 0.12 0.06 900.70 2.98 6.43 34 0.115 11.300.56 1.74 1.29 0.08 0.53 0.04 8.25 4.63 0.53Lignitic 55.15 0.08 1.25 432 0.14 0.05 360.83 2.97 7.46 32 0.050 11.700.47 2.17 1.540.02 0.31 0.05 8.82 6.43 0.60Lignitic 50.38 0.43 1.05 495 0.19 0.06 1000.98 3.49 7.50 30 0.043 11.500.55 2.200.99 0.04 0.62 0.04 8.31 6.25 0.60Lignitic 52.73 0.04 1.08 4740.18 0.04 700.93 3.41 7.01 46 0.047 11.700.51 2.04 1.13 0.02 0.500.04 8.65 5.73 0.58Lignitic 56.01 0.900.97 4460.17 5 0.04 500.85 5.29 7.62 36 0.098 11.700.52 1.98 1.13 0.06 0.07 9.09 5.86 0.53Lignitic 55.72 0.02 1.55 529 0.20 8 0.09 46 1.19 5.09 9.18 34 0.042 13.600.75 2.73 1.71 0.02 0.75 0.06 9.95 7.32 0.61Lignitic 51.08 1.21 525 0.18 100.08 77 1.09 5.73 10.24 25 0.039 15.30 1.19 5.07 1.42 0.03 0.140.05 9.82 7.46 1212 12 11 12 12 12 3 12 12 12 12 12 12 12 12 12 12 12 12 11 12 12 12 0.57 53.41 0.18 1.26 502 0.15 8 0.06 75 0.92 4.26 7.86 33 0.057 13.160.66 2.38 1.360.09 0.42 0.05 9.06 7.18 0.63 56.740.90 2.25 645 0.20 100.09 133 1.19 8.50 10.24 46 0.115 19.20 1.19 5.07 1.71 0.24 0.75 0.07 10.40 12.92 0.50 50.38 0.02 0.97 412 0.11 5 0.03 360.70 2.86 6.43 25 0.037 11.17 0.47 1.740.99 0.02 0.140.04 7.81 4.63 0.04 2.100.260.35 63.960.03 2.500.02 25.77 0.13 1.69 1.00 5.46 0.02 2.300.21 0.88 0.200.07 0.17 0.01 0.84 2.28 0.51Lignitic 54.69 0.15 2.19 471 0.26 0.05 130 1.13 3.53 8.77 23 0.068 12.600.65 3.19 1.760.21 0.63 0.10 9.07 6.86 0.59Lignitic 53.460.14 1.21 5160.11 0.05 700.77 2.37 8.76 27 0.079 11.700.58 1.98 1.45 0.15 0.52 0.05 7.29 5.88 0.52Lignitic 54.08 0.15 2.01 505 0.21 0.03 1200.99 4.92 8.09 29 0.054 12.300.64 2.60 1.63 0.15 0.45 0.09 8.71 5.30 0.50Lignitic 55.500.11 3.28 475 0.35 0.04 240 1.38 3.42 9.11 29 0.063 13.400.67 3.47 2.160.14 0.59 0.14 9.86 5.64 0.59Lignitic 50.63 0.100.93 532 0.12 0.03 600.79 1.49 7.88 30 0.039 13.200.49 1.88 1.25 0.05 0.04 8.64 5.54 0.51Lignitic 53.62 0.10 2.99 4860.26 0.04 180 1.26 2.36 9.07 32 0.073 13.900.59 2.89 1.95 0.08 0.33 0.12 10.90 5.48 0.52Lignitic 52.92 0.08 3.23 485 0.29 0.03 190 1.12 3.65 9.31 31 0.063 13.900.60 2.80 2.01 0.06 0.45 0.12 11.30 4.79 0.52Lignitic 53.33 3.20 4960.27 0.03 184 1.14 2.51 8.32 31 0.057 13.700.62 2.87 1.92 0.08 0.32 0.14 11.50 5.36 0.53Lignitic 51.01 0.14 1.60 593 0.16 0.06 45 0.86 3.92 7.73 32 0.069 13.600.66 2.13 1.49 0.09 0.41 0.09 9.96 5.30 0.50Lignitic 55.51 0.14 3.38 469 0.31 0.05 255 1.39 7.21 7.12 23 0.079 14.100.64 3.69 2.22 0.09 0.540.23 14.20 6.71 0.47Lignitic 55.88 0.11 2.57 4640.37 0.07 605 1.46 4.78 8.54 26 0.068 12.800.62 3.26 2.38 0.10 0.59 0.16 13.70 9.14 0.52Lignitic 53.02 0.11 2.45 428 0.21 0.08 234 1.24 6.57 7.46 22 0.064 12.800.63 2.90 2.69 0.13 0.38 0.11 12.40 10.55 0.54Lignitic 54.52 0.09 1.37 4440.19 0.06 90 1.00 7.30 8.43 33 0.061 12.100.79 2.30 1.55 0.10 0.33 0.06 9.47 6.48 0.51Lignitic 53.63 0.09 3.83 402 0.44 0.07 350 1.46 5.49 9.10 34 0.072 12.900.79 3.67 2.81 0.16 0.79 0.21 12.60 8.80 0.51Lignitic 54.61 0.07 2.72 477 0.28 0.05 200 1.27 8.00 8.20 33 0.082 13.600.84 2.96 1.78 0.18 0.62 0.13 10.80 7.70 0.48Lignitic 58.840.08 3.37 449 0.33 0.07 260 1.35 8.04 8.27 36 0.079 13.100.83 3.42 1.98 0.92 0.52 0.16 11.20 8.15 0.70Lignitic 50.72 0.02 0.98 381 0.12 0.04 1000.83 4.12 7.81 30 0.056 10.61 0.50 2.07 1.52 0.14 0.37 0.04 7.88 6.36 0.56Lignitic 54.78 0.01 1.88 423 0.27 0.04 200 1.14 5.87 6.85 35 0.078 11.31 0.52 3.17 1.85 0.09 0.340.13 11.60 6.00 0.59Lignitic 52.81 0.01 2.04 413 0.24 0.07 210 1.17 4.81 6.98 32 0.075 12.09 0.57 3.23 2.05 0.13 0.53 0.11 11.40 5.74 0.59Lignitic 52.500.01 1.57 411 0.21 0.04 180 1.08 4.85 6.84 40 0.063 10.57 0.56 2.77 1.71 0.10 0.49 0.08 10.50 5.82 0.59Lignitic 49.740.11 0.92 392 0.11 0.05 1600.71 2.81 6.99 25 0.057 9.460.49 1.72 1.21 0.08 0.39 0.03 7.50 6.16 0.53Lignitic 53.15 0.10 2.62 409 0.30 0.06 263 1.21 5.26 6.95 37 0.092 12.800.66 3.35 2.18 0.10 0.77 0.15 12.10 10.50 0.54Lignitic 53.25 0.08 1.50 4700.23 0.05 231 0.99 4.23 6.73 30 0.083 12.800.62 2.58 1.78 0.14 0.27 0.10 9.82 7.83 0.50Lignitic 54.19 0.07 2.30 409 0.24 0.07 300 1.18 5.11 6.23 40 0.076 13.000.61 3.14 2.01 0.10 0.48 0.13 11.70 8.68 0.54Lignitic 53.99 0.17 1.00 445 0.13 0.05 61 0.87 2.33 7.45 29 0.065 10.000.46 2.17 1.43 0.04 0.540.04 8.41 6.44 0.49Lignitic 55.49 0.11 2.52 375 0.27 0.06 170 1.34 3.84 6.66 38 0.076 11.500.54 3.67 1.97 0.02 0.42 0.13 12.20 14.33 0.52Lignitic 54.99 0.10 1.58 4500.22 0.07 96 1.02 2.57 7.11 31 0.062 11.500.47 2.78 1.47 0.04 0.33 0.07 9.66 8.31 0.49Lignitic 56.040.11 1.69 433 0.23 0.06 150 1.22 3.54 6.75 36 0.053 10.900.45 2.91 1.540.02 0.38 0.08 10.40 9.11 0.60Lignitic 51.200.060.06 397 0.17 0.06 1200.99 2.08 7.03 30 0.059 10.600.54 2.50 1.28 0.02 0.52 0.07 9.59 6.07 0.64Lignitic 48.83 0.12 0.12 399 0.16 0.05 900.97 2.75 6.95 30 0.034 10.400.55 2.32 1.19 0.02 0.27 0.05 8.60 6.06 Trace Elements

FILE: EPA-HQ-OAR-2009-0234-DRAFT-2746.xls Page 5 of 8

### Detroit Edison Monthly Fuels - 2008

Sampleid PlantPlant Units Spl Date 08F056300SC SC6 8/25/2008 08F056310SC SC7 8/25/2008 08F061360SC SC3 9/25/2008 08F061350SC SC4,2,1 9/25/2008 08F061370SC SC6 9/25/2008 08F061380SC SC7 9/25/2008 08F070820SC SC3 10/25/2008 08F070810SC SC4,2,1 10/25/2008 08F070830SC SC6 10/25/2008 08F070840SC SC7 10/25/2008 08F077910SC SC3 11/25/2008 08F077900SC SC4,2,1 11/25/2008 08F077920SC SC6 11/25/2008 08F077930SC SC7 11/25/2008 08F082830SC SC3 12/25/2008 08F082820SC SC4,2,1 12/25/2008 08F082840SC SC6 12/25/2008 08F082850SC SC7 12/25/2008 SC Count 48

SC Average SC Max SC Min SC StdDev 08F009830HB HB1 1/25/2008 08F013810HB HB1 2/25/2008 08F019760HB HB1 3/25/2008 08F028500HB HB1 4/25/2008 08F034060HB HB1 5/25/2008 08F041210HB HB1 6/25/2008 08F049300HB HB1 7/25/2008 08F056340HB HB1 8/25/2008 08F061410HB HB1 9/25/2008 08F070870HB HB1 10/25/2008 08F077960HB HB1 11/25/2008 08F082880HB HB1 12/25/2008 HB Count 12

HB Average HB Max HB Min HB StdDev 08F009820MO MO1,2,3,4 1/25/2008 08F013800MO MO1,2,3,4 2/25/2008 08F019750MO MO1,2,3,4 3/25/2008 08F028490MO MO1,2,3,4 4/25/2008 08F034050MO MO1,2,3,4 5/25/2008 08F041200MO MO1,2,3,4 6/25/2008 08F049290MO MO1,2,3,4 7/25/2008 ba_ratioash_type esp_idx ag as ba be br cd cl co cr cu f hg mn mo ni pb sb se tl v zn Trace Elements

0.50Lignitic 55.02 0.09 0.09 3600.23 0.06 210 1.21 3.34 6.45 34 0.065 10.500.59 3.06 1.55 0.02 0.540.11 10.10 6.17 0.56Lignitic 52.68 0.100.10 365 0.20 0.06 170 1.25 2.99 6.90 34 0.051 10.800.59 3.22 1.62 0.03 0.35 0.10 9.84 6.09 0.55Lignitic 52.42 0.08 1.95 388 0.22 0.07 175 1.17 5.22 6.71 40 0.069 12.700.52 2.92 1.49 0.02 0.53 0.09 11.10 6.97 0.60Lignitic 50.840.11 1.40 441 0.17 0.04 600.92 3.37 6.51 36 0.050 11.500.47 2.16 1.300.02 0.48 0.05 8.94 6.59 0.58Lignitic 50.440.07 1.74 362 0.23 0.05 120 1.02 4.11 6.50 46 0.071 11.600.50 2.61 1.57 0.03 0.51 0.09 11.20 10.71 0.59Lignitic 50.960.08 1.87 348 0.22 0.06 130 1.06 4.24 6.23 42 0.068 10.700.50 2.58 1.42 0.02 0.52 0.08 9.79 9.54 0.55Lignitic 54.68 0.08 1.49 3940.21 5 0.05 120 1.07 2.12 7.53 30 0.060 11.100.53 2.63 1.63 0.01 0.57 0.08 9.48 6.54 0.61Lignitic 52.78 0.05 1.62 409 0.15 5 0.05 400.84 1.93 7.25 30 0.042 10.200.57 2.00 1.460.03 0.48 0.04 7.22 7.89 0.53Lignitic 54.78 0.06 2.20 378 0.25 5 0.08 170 1.21 4.12 39 0.074 11.400.56 2.93 1.600.01 0.53 0.11 8.68 8.59 0.53Lignitic 54.460.05 1.85 3540.24 5 0.06 180 1.18 2.55 7.07 35 0.057 11.500.58 2.96 1.61 0.01 0.47 0.10 8.94 8.29 0.49Lignitic 56.500.02 2.19 422 0.24 8 0.06 170 1.24 6.14 7.64 37 0.044 12.400.66 3.14 1.79 0.02 0.500.10 10.90 6.85 0.57Lignitic 54.17 0.03 1.50 473 0.15 8 0.09 37 0.98 4.46 7.68 31 0.027 12.000.64 2.22 1.28 0.02 0.48 0.05 8.95 6.46 0.50Lignitic 58.05 0.01 2.50 4200.29 8 0.12 180 1.33 6.04 8.00 38 0.049 12.100.65 3.31 1.740.03 0.62 0.11 10.60 7.65 0.50Lignitic 58.37 0.07 2.27 401 0.28 8 0.07 170 1.27 6.34 8.13 37 0.049 11.300.63 3.14 1.760.02 0.77 0.10 10.20 9.49 0.15 2.13 4540.23 100.05 200 1.09 4.14 7.89 29 0.057 13.200.64 3.08 1.67 0.05 0.35 0.10 11.40 10.08 0.60Lignitic 54.41 0.03 1.28 518 0.18 100.05 900.87 6.13 8.51 26 0.053 13.300.60 2.24 1.31 0.02 0.51 0.06 9.39 9.03 0.56Lignitic 54.55 0.01 1.96 428 0.24 100.07 190 1.13 5.76 12.60 29 0.049 13.300.63 3.41 2.82 0.03 0.58 0.09 10.60 9.46 0.57Lignitic 51.500.11 1.93 443 0.19 100.06 190 1.03 4.70 8.57 27 0.050 13.000.57 2.83 1.740.02 0.41 0.09 10.60 8.33 4747 47 47 48 48 48 12 48 48 48 48 47 48 48 48 48 48 48 48 47 48 48 48 0.54 53.69 0.08 1.90 435 0.23 8 0.06 170 1.11 4.32 7.69 32 0.062 12.08 0.60 2.81 1.740.09 0.48 0.10 10.23 7.50 0.70 58.840.17 3.83 593 0.44 100.12 605 1.46 8.04 12.60 46 0.092 14.100.84 3.69 2.82 0.92 0.79 0.23 14.20 14.33 0.47 48.83 0.01 0.06 348 0.11 5 0.03 37 0.71 1.49 6.23 22 0.027 9.460.45 1.72 1.19 0.01 0.27 0.03 7.22 4.79 0.05 2.17 0.040.89 51.800.07 2.13 0.02 94.81 0.18 1.66 1.12 5.19 0.01 1.200.09 0.51 0.39 0.13 0.12 0.04 1.55 1.90 0.15Bituminous 83.05 0.094.45 105 1.31 0.06 1,050 5.01 8.33 14.20 68 0.073 25.10 1.80 9.57 5.75 0.13 0.57 0.33 17.00 14.02 0.15Bituminous 84.400.12 3.46 87 1.17 0.06 1,1604.85 12.00 16.40 30 0.085 11.00 1.32 11.10 7.43 0.12 2.15 0.33 24.30 9.93 0.17Bituminous 83.88 0.12 5.56 143 1.12 0.07 4244.75 15.90 28.50 72 0.075 14.10 1.23 12.83 9.53 0.18 1.89 0.49 42.80 10.37 0.15Bituminous 80.83 0.07 5.46 123 1.45 0.09 710 5.06 23.30 15.13 90 0.075 14.50 1.81 10.808.340.16 3.060.39 38.20 12.93 0.12Bituminous 86.05 0.10 2.93 57 1.76 0.06 1,570 5.45 13.10 15.31 50 0.067 6.77 1.24 10.62 9.03 0.13 3.43 0.24 27.30 10.93 0.14Bituminous 84.060.074.45 90 1.61 0.06 1,100 5.45 10.64 10.64 68 0.115 17.50 1.29 9.69 6.640.08 2.83 0.32 25.80 11.33 0.14Bituminous 84.37 0.084.42 83 1.28 0.06 1,200 5.75 12.40 14.70 67 0.090 18.00 1.32 10.38 6.140.02 3.100.29 21.60 13.71 0.15Bituminous 82.18 0.040.04 92 1.60 0.06 1,900 5.99 9.39 16.30 42 0.061 11.70 1.00 10.80 6.65 0.03 2.62 0.27 23.80 9.34 0.18Bituminous 80.640.07 3.72 119 1.39 0.07 1,800 5.14 10.90 13.81 72 0.060 13.900.88 10.12 6.75 0.03 2.49 0.27 28.90 12.29 0.19Bituminous 78.58 0.83 4.05 124 1.20 15 0.06 1,8004.38 13.00 17.40 56 0.110 16.100.68 8.61 6.43 0.06 1.900.24 22.70 13.00 0.16Bituminous 84.800.04 3.91 114 1.47 8 0.08 1,800 5.84 13.20 15.30 58 0.054 14.000.85 10.54 7.73 0.03 2.660.26 25.80 13.11 0.16Bituminous 82.21 0.044.57 125 1.49 100.06 1,030 5.44 12.00 22.04 67 0.055 15.70 1.24 10.67 6.79 0.05 2.49 0.32 29.70 13.46 1212 12 12 12 12 12 3 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 0.16 82.92 0.14 3.92 105 1.40 11 0.06 1,295 5.26 12.85 16.64 62 0.077 14.86 1.22 10.48 7.27 0.09 2.43 0.31 27.33 12.04 0.19 86.05 0.83 5.56 143 1.76 15 0.09 1,900 5.99 23.30 28.50 90 0.115 25.10 1.81 12.83 9.53 0.18 3.43 0.49 42.80 14.02 0.12 78.58 0.040.04 57 1.12 8 0.06 4244.38 8.33 10.64 30 0.054 6.77 0.68 8.61 5.75 0.02 0.57 0.24 17.00 9.34 0.02 2.12 0.22 1.43 23.88 0.20 3.82 0.01 477.03 0.48 3.83 4.5715.74 0.02 4.440.34 1.01 1.17 0.06 0.75 0.07 7.09 1.59 0.31Lignitic 65.83 0.15 4.12 2060.91 0.06 750 3.63 8.59 14.80 41 0.093 11.200.86 7.43 5.69 0.14 0.560.35 18.60 10.82 0.36Lignitic 65.360.15 4.17 2260.74 0.05 940 2.96 7.55 14.10 23 0.101 10.700.71 5.84 5.300.13 1.31 0.36 18.40 7.61 0.33Lignitic 64.860.10 3.58 2460.77 0.06 840 3.08 10.50 15.00 25 0.090 11.300.72 5.99 5.240.08 1.62 0.33 21.10 9.95 0.31Lignitic 64.97 0.07 5.54 235 1.14 0.07 770 3.20 12.50 12.63 46 0.085 12.000.96 6.35 5.000.24 2.38 0.31 19.00 11.13 0.38Lignitic 63.99 0.11 3.91 192 0.86 0.07 790 2.85 5.73 12.85 46 0.106 10.88 0.76 6.45 4.79 0.17 1.860.31 16.30 11.05 0.32Lignitic 65.89 0.09 5.18 2100.86 0.06 684 2.69 7.40 11.46 43 0.136 10.900.69 5.68 5.260.07 1.900.31 18.10 11.34 0.31Lignitic 68.21 0.10 6.43 2300.85 0.06 730 3.08 8.54 14.40 50 0.104 11.900.68 6.45 4.800.01 1.58 0.29 19.50 15.40

FILE: EPA-HQ-OAR-2009-0234-DRAFT-2746.xls Page 6 of 8

### Detroit Edison Monthly Fuels - 2008

Sampleid PlantPlant Units Spl Date 08F056330MO MO1,2,3,4 8/25/2008 08F061400MO MO1,2,3,4 9/25/2008 08F070860MO MO1,2,3,4 10/25/2008 08F077950MO MO1,2,3,4 11/25/2008 08F082870MO MO1,2,3,4 12/25/2008 MO Count 12

MO Average MO Max MO Min MO StdDev 08F009760RR RR2,3 1/25/2008 08F013740RR RR2,3 2/25/2008 08F019690RR RR2,3 3/25/2008 08F028400RR RR2,3 4/25/2008 08F033990RR RR2,3 5/25/2008 08F041140RR RR2,3 6/25/2008 08F049230RR RR2,3 7/25/2008 08F056270RR RR2,3 8/25/2008 08F061340RR RR2,3 9/25/2008 08F070800RR RR2,3 10/25/2008 08F077890RR RR2,3 11/25/2008 08F082810RR RR2,3 12/25/2008 RR Count 12

RR Average RR Max RR Min RR StdDev 08F009810TC TC7,8,9 1/25/2008 08F013790TC TC7,8,9 2/25/2008 08F019740TC TC7,8,9 3/25/2008 08F028470TC TC7,8,9 4/25/2008 08F034040TC TC7,8,9 5/25/2008 08F041190TC TC7,8,9 6/25/2008 08F056320TC TC7,8,9 8/25/2008 08F049280TC TC7,8,9 8/31/2008 08F061390TC TC7,8,9 9/25/2008 08F070850TC TC7,8,9 10/25/2008 08F077940TC TC7,8,9 11/25/2008 08F082860TC TC7,8,9 12/25/2008 TC Count 12

TC Average TC Max TC Min TC StdDev Grand Count128

Grand Average Grand Max ba_ratioash_type esp_idx ag as ba be br cd cl co cr cu f hg mn mo ni pb sb se tl v zn Trace Elements

0.34Lignitic 65.640.04 2060.75 0.06 660 3.00 8.00 13.70 43 0.093 12.000.79 6.31 4.52 0.02 2.05 0.29 17.90 10.39 0.39Lignitic 61.38 0.074.34 245 0.78 0.05 630 2.84 6.88 10.51 64 0.079 11.100.63 5.56 3.93 0.02 1.48 0.22 16.60 8.76 0.40Lignitic 60.21 0.05 4.19 217 0.71 5 0.08 620 2.65 6.25 11.48 49 0.075 9.23 0.61 5.41 4.37 0.01 1.41 0.22 15.50 10.58 0.38Lignitic 63.38 0.03 3.96 247 0.71 8 0.05 540 2.79 7.71 11.81 46 0.059 11.700.67 5.66 3.97 0.02 1.67 0.20 14.40 10.41 0.38Lignitic 64.03 0.05 4.06 263 0.87 100.05 690 3.10 7.97 12.56 39 0.076 11.600.62 6.164.29 0.02 1.740.22 17.90 11.97 1212 12 12 11 12 12 3 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 0.35 64.48 0.084.50 227 0.83 8 0.06 720 2.99 8.14 12.94 43 0.091 11.21 0.73 6.11 4.760.08 1.63 0.28 17.78 10.78 0.40 68.21 0.15 6.43 263 1.14 100.08 940 3.63 12.50 15.00 64 0.136 12.000.96 7.43 5.69 0.24 2.38 0.36 21.10 15.40 0.31 60.21 0.03 3.58 192 0.71 5 0.05 540 2.65 5.73 10.51 23 0.059 9.23 0.61 5.41 3.93 0.01 0.560.20 14.40 7.61 0.03 2.13 0.040.86 21.22 0.12 2.500.01 107.660.26 1.83 1.4610.86 0.02 0.77 0.10 0.55 0.560.08 0.45 0.06 1.83 1.87 0.38Lignitic 61.85 0.21 1.41 261 0.43 0.04 316 2.21 7.31 8.10 42 0.062 7.68 0.48 4.82 3.49 0.17 0.97 0.09 13.20 6.84 0.38Lignitic 61.91 0.20 1.02 307 0.38 0.04 280 2.07 6.38 10.70 44 0.056 8.460.43 4.46 3.640.06 0.47 0.11 13.50 6.98 0.32Lignitic 66.82 0.19 1.55 3240.39 0.07 210 2.24 8.62 10.80 44 0.062 8.51 0.44 4.28 3.35 0.05 0.69 0.11 14.80 17.14 0.39Lignitic 60.17 0.12 1.49 319 0.51 0.05 280 2.17 8.39 9.33 37 0.058 9.87 0.45 4.38 2.89 0.29 0.55 0.11 11.60 11.31 0.34Lignitic 66.840.02 2.15 289 0.68 0.07 670 2.98 7.61 9.46 40 0.066 7.940.52 5.744.05 0.09 0.900.15 14.30 10.54 0.36Lignitic 64.69 0.15 2.11 303 0.49 0.07 365 2.30 6.24 9.81 40 0.082 15.400.54 4.97 3.35 0.09 0.800.16 13.20 9.28 0.31Lignitic 66.660.15 1.58 318 0.37 0.05 220 1.89 4.09 10.20 47 0.075 7.91 0.39 4.17 2.97 0.01 0.97 0.08 11.40 7.29 0.47Lignitic 56.660.160.16 278 0.36 0.13 190 2.04 4.61 9.22 40 0.058 6.87 0.39 4.01 2.47 0.02 0.700.09 10.90 8.28 0.49Lignitic 57.960.16 2.28 323 0.34 0.04 200 2.06 7.09 9.30 40 0.076 10.400.35 4.15 2.560.01 0.82 0.13 12.30 9.22 0.41Lignitic 61.49 0.06 1.77 253 0.34 100.07 180 2.04 3.96 9.96 43 0.075 8.260.40 4.11 2.540.01 0.87 0.12 10.50 8.30 0.44Lignitic 61.97 0.04 1.30 321 0.43 8 0.04 150 2.29 6.20 9.83 41 0.056 10.700.44 4.59 2.72 0.02 0.960.10 12.10 10.13 Bituminous 0.10 1.84 317 0.45 100.04 370 2.53 6.57 10.89 36 0.088 12.300.47 4.97 2.960.04 0.95 0.11 13.30 11.05 1112 11 12 12 12 12 3 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 0.39 62.460.13 1.56 301 0.43 9 0.06 286 2.24 6.42 9.80 41 0.068 9.53 0.44 4.55 3.08 0.07 0.800.11 12.59 9.70 0.49 66.840.21 2.28 3240.68 100.13 670 2.98 8.62 10.89 47 0.088 15.400.54 5.744.05 0.29 0.97 0.16 14.80 17.14 0.31 56.660.02 0.16 253 0.34 8 0.04 150 1.89 3.96 8.10 36 0.056 6.87 0.35 4.01 2.47 0.01 0.47 0.08 10.50 6.84 0.06 3.49 0.060.58 25.040.10 1.440.02 140.840.29 1.54 0.80 3.07 0.01 2.41 0.06 0.500.49 0.08 0.17 0.02 1.34 2.80 0.39Lignitic 61.900.15 7.80 2300.95 0.04 560 3.07 6.13 13.90 33 0.082 11.800.57 6.584.860.17 0.58 0.31 16.00 9.41 0.41Lignitic 61.300.10 5.16 2500.84 0.02 600 2.61 5.88 13.70 22 0.081 10.100.55 5.59 3.97 0.10 0.97 0.28 16.20 6.61 0.35Lignitic 64.200.11 4.89 317 0.79 0.05 614 3.07 8.18 13.80 26 0.077 11.600.62 6.164.68 0.12 1.17 0.27 21.40 7.44 0.38Lignitic 63.28 0.07 5.83 2500.99 0.07 520 2.98 11.90 11.69 36 0.072 10.700.76 6.004.340.81 1.560.23 16.80 8.88 0.43Lignitic 60.840.12 9.98 164 1.06 0.06 525 3.82 6.08 13.97 45 0.115 10.45 0.67 8.33 5.35 0.25 1.87 0.36 18.50 12.61 0.40Bituminous 61.960.08 5.71 205 1.03 0.07 663 3.13 6.82 11.20 40 0.118 10.500.60 6.744.240.11 1.500.26 17.90 11.28 0.45Lignitic 58.51 0.03 242 0.58 0.06 400 2.68 6.38 11.10 40 0.072 11.000.56 5.96 3.200.07 1.05 0.20 14.90 7.03 0.38Lignitic 63.93 0.09 7.64 2540.62 0.08 480 3.15 5.14 11.80 44 0.077 9.45 0.51 8.14 3.62 0.02 0.97 0.19 15.70 11.58 0.44Lignitic 58.88 0.074.51 283 0.76 0.04 410 2.64 5.19 10.51 71 0.076 10.300.50 5.49 3.460.02 1.23 0.19 16.80 10.48 0.44Lignitic 59.800.06 5.29 255 0.74 5 0.06 480 2.94 6.48 11.76 51 0.062 9.18 0.50 5.77 3.83 0.02 1.240.21 14.60 11.39 0.45Lignitic 60.17 0.02 4.90 288 0.74 8 0.04 380 3.05 7.18 11.63 45 0.056 9.900.55 5.87 3.740.02 1.29 0.21 14.20 10.27 0.42Lignitic 61.800.09 6.73 2660.86 100.12 550 3.17 8.21 13.71 38 0.084 11.200.61 6.85 5.31 0.03 1.41 0.23 18.10 15.26 1212 12 12 11 12 12 3 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 0.41 61.38 0.08 6.22 2500.83 8 0.06 515 3.03 6.96 12.40 41 0.081 10.52 0.58 6.464.22 0.15 1.240.25 16.76 10.19 0.45 64.200.15 9.98 317 1.06 100.12 663 3.82 11.90 13.97 71 0.118 11.800.76 8.33 5.35 0.81 1.87 0.36 21.40 15.26 0.35 58.51 0.02 4.51 1640.58 5 0.02 380 2.61 5.14 10.51 22 0.056 9.18 0.50 5.49 3.200.02 0.58 0.19 14.20 6.61 0.03 1.85 0.04 1.67 39.55 0.15 2.500.02 89.05 0.32 1.84 1.3012.53 0.02 0.800.08 0.940.71 0.22 0.33 0.05 2.01 2.50 106107 106 106 106 108 108 27 108 108 108 108 107 108 108 108 108 108 108 108 106 108 108 108 0.45 59.97 0.11 2.73 347 0.51 8 0.06 397 2.10 6.21 10.07 39 0.069 11.95 0.67 4.58 3.07 0.09 0.95 0.16 13.82 8.87 0.70 86.05 0.909.98 645 1.76 15 0.13 1,900 5.99 23.30 28.50 90 0.136 25.10 1.81 12.83 9.53 0.92 3.43 0.49 42.80 17.14

FILE: EPA-HQ-OAR-2009-0234-DRAFT-2746.xls Page 7 of 8

### Detroit Edison Monthly Fuels - 2008

Sampleid PlantPlant Units Spl Date

Grand Min Grand StdDev ba_ratioash_type esp_idx ag as ba be br cd cl co cr cu f hg mn mo ni pb sb se tl v zn Trace Elements

0.12 48.83 0.01 0.04 57 0.11 5 0.02 360.70 1.49 6.23 22 0.027 6.77 0.35 1.72 0.99 0.01 0.140.03 7.22 4.63 0.14 9.540.12 1.85132.31 0.42 2.440.02 414.07 1.40 3.38 3.5812.38 0.020 2.45 0.26 2.64 1.97 0.12 0.740.10 6.24 2.68

FILE: EPA-HQ-OAR-2009-0234-DRAFT-2746.xls Page 8 of 8