# 6/2012 Revised New Hampshire BART Modeling utilizing the following theoretical conditions : " Full load maximum emission scenarios of BART unit with maximum possible impact at nearby Class I areas " Theoretical best-natural visibility background conditions occurring with wind alignments typical of worst case visibility conditions " Assumes BART unit is the only pollution emitting source operating and affecting Class I area during a period of pro-longed southwesterly winds over New England

20%Best Natural Days (Iblhr) (Iblhr) (Iblhr) 24hr(uglm3) 24hr(ug/m3) 24hr(uglm3) Adj(11Mm) (DV) 24hr(ug/m3) 24hr(ug/m3) 24hr(ug/m3) Adj(1/Mm) (DV) 24hr(uglm3)24hr(ug/m3) 24hr(uglm3) Adj(1IMm) (DV) With full source impact S02 Emis Nox Emis PM2 .5 Emis Acadia S04 Acadia N03 Acadia PM Acadia Ext Acadia DV GG S04 GG N03 GG PM GG Ext GG DV LB S04 LB N03 LB PM LB Ext LB DV MK2 Base 15,254 1,284 338 0 .259 0

.26 0 .315 5 .95 7 .739 0 .194 0 .23 0 .231 1 .48 6 .172 0 .037 0 .12 0 .052 -5 .28 3 635 MK2 FGD 1,525 1,284 338 0 .026 0

.28 0

.143 1 .79 6 .283 0 .019 0 .23 0 .105 -1 .61 5 .0 0 .004 0 .12 0 .027 -5 .88 . 3 398 MK2 SNCR 15,254 5,081 338 . MK2 SCR U

pgrade 15,254 963 338 0 .259 0

.20 0,298 5 .12 7 .454 0 .194 0

.17 0

.219 0 .78 5 .920 0

.037 0

.09 0.049 -5 .62 3 502 MK2 Ba house 15,254 1,284 482 0 .259 0

.26 0

.450 7 .30 8 .1 0

.194 0

.23 0

.330 2 .47 6 .527 0

.037 0

.12 0

.074 -5

.06 . 3 .721 MK2 ESP U rade 15,254 1,284 270 0 .259 0

.28 0

.252 5

.32 7

.525 0

.194 0

.23 0

.185 1 .02 6 .006 0

.037 0

.12 0

.042 -5

.38 3 .595
NT1 Base 9,483 1,523 392 0126 0 .13 0

.191 1 .97 6

. 0

.095 0

.11 0

.145 -1 .57 5 .051 0 .018 0 .05 0 .032 -6 .42 3 .187 NT71%S 4,742 1,523 392 0 .063 0

.13 0,143 0 .84 5 .940 0

.048 ' 0

.11 0

.1~ -243 4 .729 0 .009 0 .05 0 .024 -6 .59 3 .118 NT1 0 5% S 2,371 1,523 392 0 .031 0

.13 0

.120 0

.27 5 731 0 .024 0

.11 0

.091 -2 .86 4

. 0

.004 0

.05 0

.020 -668 3 .084 NT10 .501bS02/MMBtu 2,181 1,523 392 0 .029 0

.13 0

.118 0

.21 5

.710 0

.022 0_11 0 .089 -2 .91 4

.547 0

.004 0

.05 0

.020 -6

.68 3 .081 NT1 0 .3%S 1,422 1,523 392 0 .019 0

.13 0

.110 0

.04 5

.649 0

.014 0

.11 0

.084 -3.04 4 .499 0

.003 0

.05 0

.019 -0

.71 3 .071 NT1 FGD 948 1,523 392 0 .012 0.13 0 .097 -0 .16 5 .576 0

.009 0

.11 0

.074 -3.19 4 .442 0

.002 0

.05 0

.017 -6

.74 3 .059 NT1 LNB 9,483 1,364 392 0 .126 O

.tt 0

.186 1 .79 6282 0 .095 0

.10 0

.142 -1 .73 4993 0 .018 0

.04 0

.031 -8 .48 3 .163 NTISNCR 9,483 1,137 392 0 .126 0

.09 0

.181 1 .54 6 .193 0

.095 0

.08 0

.138 -1 .94 4914 0 .018 0

.04 0

.031 -6 .56 3 .131 NT1 LNB-0FA 9,483 1,137 392 0 .126 0

.09 0

.181 1 .54 6 .193 0

.095 0

.08 0

.138 -1 .94 4 .914 0

.018 0

.04 0

.031 -6 .56 3 .131 NT1 SCR 9,483 341 392 0 .126 0

.03 0

.18? 0

.69 S

.B86 0,095 0 .02 0

.123 -2 .65 4 .646 0

.018 0

.01 0

.027 -6 .84 3 .019 NT1 ESP existin 9,483 1,137 47 0 .126 0

.09 0

.023 -0

.04 5 .61 0 .095 0

.08 0

.017 -3.14 4 .458 0

.018 0

.04 0

.004 -6 .83 3 .025 NTI Baghouse 9,483 1,137 7 0 .126 0

.09 0

.003 -0

.24 5 .545 0 .095 0

.08 0

.002 -3.29 4 .401 0

.018 0

.04 0

.001 -6 .86 3 .012



### 20% Best Natural Days

With full source impact Acadia Acadia Acadia Acdia (DV) DV DV DV BART Source Base Control Benefit Contribution Great Gulf Great Gulf Great Gulf Great Gulf (DV DV DV DV BART Source Base Control Benefit Contribution Lye Brook Lye Brook Lye Brook Lye Brook (DV) DV DV DV BART Source Base Control Benefit Contribution MK2 Base 7 .74 7 .74 3 .04 6

.17 6.17 - 2 .47 3.64 3.64 - 0 .84 MK2 FGD 7 .74 6 .28 1 .46 1 .58 6 .17 5.04 1 .13 1 .33 3.64 3.40 0.24 0 .60 MK2 SNCR MK2 SCR Upg rade 7 .74 7 .45 0 .28 2

.75 6

.17 5.92 0 .25 2

.22 3

.64 3.50 0.13 0.71 IYIK2 Ba house 7 .74 8 .20 (0 .46 3 .49 6 .17 6.53 0 .36 2.82 3 .64 3.72 0.09 0.93 MK2 ESP Upg rade 7 .74 7

.52 0

.21 2.82 6 .17 6

.01 0

.17 2.30 3 .64 3.60 0 .04 0.80

NTI Base 6 .35 6

.35 - 1 .65 5 .05 5.05 - 1 .35 3.19 3 .19 0.39 NT71%S 6 .35 5

.94 0

.41 1 .24 5.05 4 .73 0

.32 1 .02 3.19 3 .12 0

.07 0.32 NTI 0 .5°i6 S 6 .35 5.73 0 .82 1 .03 5.05 4 .56 0

.49 0.86 3.19 3 .08 0

.10 0

.29 NTI 0 .50 Ib S02/MMBtu 6.35 5.71 0.64 1 .01 5.05 4 .55 0

.50 0.84 3.19 3 .08 0 .11 0

.29 NTI 0 .3% S 6.35 5.65 0.70 0.95 5.05 4 .50 0

.55 0.79 3.19 3 .07 0 .12 0

.28 NT7 FGD 6.35 5.58 0.77 0 .87 5.05 4.44 0 .61 0

.74 3.19 3 .06 0 .13 0

.26 NT1 SNCR 6.35 6.19 0.16 1 .49 5.05 4.91 0.14 1 .21 3.19 3 .13 0.06 0 .34 NT1 SCR 6.35 5.89 0.46 1 .18 5.05 4.65 0.40 0 .94 3.19 3 .02 0.17 0 .22 NT1 ESP (existing) 6.35 5.62 0 .73 1 .49 5.05 4.46 0 .59 1 .21 3.19 3.03 0.16 0.34 INT7 Baghouse 1 6.35 5.55 0 .07 1 .49

- 5.05 4 .40 0

.06 1

. 21 3.19 3_01 0.01 n ~a