--
                                     0.31
                                      --
                                     4.70
                                     4.49
                                     0.21
                                     2007
                                98th percentile
                                     0.93
                                     15.63
                                     16.56
                                     5.94
                                     0.00
                                     0.00
                                      --
                                     0.08
                                      --
                                     0.84
                                      --
                                     5.04
                                     4.46
                                     0.58
                                   2007 (73)
                                Worst 20% Days
                                     0.70
                                     15.67
                                     16.38
                                     4.48
                                     0.00
                                     0.00
                                      --
                                     0.06
                                      --
                                     0.64
                                      --
                                     4.93
                                     4.49
                                     0.44
                                     2008
                                Annual Average
                                     0.23
                                     15.66
                                     15.89
                                     1.47
                                     0.00
                                     0.00
                                      --
                                     0.02
                                      --
                                     0.21
                                      --
                                     4.63
                                     4.49
                                     0.15
                                     2008
                                98th percentile
                                     0.70
                                     15.60
                                     16.30
                                     4.51
                                     0.00
                                     0.00
                                      --
                                     0.06
                                      --
                                     0.64
                                      --
                                     4.89
                                     4.45
                                     0.44
                                   2008 (73)
                                Worst 20% Days
                                     0.47
                                     15.71
                                     16.17
                                     2.97
                                     0.00
                                     0.00
                                      --
                                     0.04
                                      --
                                     0.42
                                      --
                                     4.81
                                     4.51
                                     0.29
                                     2009
                                Annual Average
                                     0.24
                                     15.66
                                     15.90
                                     1.54
                                     0.00
                                     0.00
                                      --
                                     0.02
                                      --
                                     0.22
                                      --
                                     4.64
                                     4.49
                                     0.15
                                     2009
                                98th percentile
                                     0.81
                                     15.72
                                     16.53
                                     5.13
                                     0.00
                                     0.00
                                      --
                                     0.07
                                      --
                                     0.73
                                      --
                                     5.03
                                     4.53
                                     0.50
                                   2009 (73)
                                Worst 20% Days
                                     0.52
                                     15.69
                                     16.21
                                     3.31
                                     0.00
                                     0.00
                                      --
                                     0.05
                                      --
                                     0.47
                                      --
                                     4.83
                                     4.50
                                     0.33
                                     2010
                                Annual Average
                                     0.16
                                     15.66
                                     15.83
                                     1.04
                                     0.00
                                     0.00
                                      --
                                     0.01
                                      --
                                     0.15
                                      --
                                     4.59
                                     4.49
                                     0.10
                                     2010
                                98th percentile
                                     0.27
                                     15.81
                                     16.08
                                     1.72
                                     0.00
                                     0.00
                                      --
                                     0.03
                                      --
                                     0.25
                                      --
                                     4.75
                                     4.58
                                     0.17
                                   2010 (73)
                                Worst 20% Days
                                     0.24
                                     15.75
                                     15.99
                                     1.51
                                     0.00
                                     0.00
                                      --
                                     0.02
                                      --
                                     0.22
                                      --
                                     4.69
                                     4.54
                                     0.15

Table 39.  Hassel Island NPS Site  -  Group 10  -  St. John Burning
                                Hassel Island
                                 BEXT (Source)
                                  BEXT (BKG)
                                 BEXT (Total)
                                Percent CHANGE
                                   BEXT SO4
                                   BEXT NO3
                                    BEXT OC
                                    BEXT EC
                                   BEXT PMC
                                   BEXT PMF
                                   BEXT NO2
                                      dv
                                    (total)
                                      dv
                                     (bkg)
                                     ∆dv

                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                       %
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]

                                     2007
                                Annual Average
                                     0.01
                                     15.66
                                     15.67
                                     0.07
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.01
                                      --
                                     4.49
                                     4.49
                                     0.01
                                     2007
                                98th percentile
                                     0.03
                                     15.55
                                     15.59
                                     0.22
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.03
                                      --
                                     4.44
                                     4.42
                                     0.02
                                   2007 (73)
                                Worst 20% Days
                                     0.02
                                     15.88
                                     15.90
                                     0.16
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.02
                                      --
                                     4.56
                                     4.55
                                     0.02
                                     2008
                                Annual Average
                                     0.01
                                     15.66
                                     15.67
                                     0.05
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.01
                                      --
                                     4.49
                                     4.49
                                     0.01
                                     2008
                                98th percentile
                                     0.03
                                     15.62
                                     15.65
                                     0.20
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.03
                                      --
                                     4.48
                                     4.46
                                     0.02
                                   2008 (73)
                                Worst 20% Days
                                     0.02
                                     15.71
                                     15.73
                                     0.14
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.02
                                      --
                                     4.53
                                     4.52
                                     0.01
                                     2009
                                Annual Average
                                     0.01
                                     15.66
                                     15.67
                                     0.06
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.01
                                      --
                                     4.49
                                     4.49
                                     0.01
                                     2009
                                98th percentile
                                     0.04
                                     15.58
                                     15.62
                                     0.23
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.03
                                      --
                                     4.46
                                     4.44
                                     0.02
                                   2009 (73)
                                Worst 20% Days
                                     0.03
                                     15.68
                                     15.71
                                     0.17
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.02
                                      --
                                     4.51
                                     4.50
                                     0.02
                                     2010
                                Annual Average
                                     0.03
                                     15.66
                                     15.69
                                     0.19
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.03
                                      --
                                     4.51
                                     4.49
                                     0.02
                                     2010
                                98th percentile
                                     0.05
                                     15.81
                                     15.86
                                     0.33
                                     0.00
                                     0.00
                                      --
                                     0.01
                                      --
                                     0.05
                                      --
                                     4.61
                                     4.58
                                     0.03
                                   2010 (73)
                                Worst 20% Days
                                     0.05
                                     15.72
                                     15.77
                                     0.30
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.04
                                      --
                                     4.56
                                     4.53
                                     0.03

Table 40.  IMPROVE Site  -  Group 11  -  St. John Boilers
                                   IMPROVE
                                 BEXT (Source)
                                  BEXT (BKG)
                                 BEXT (Total)
                                Percent CHANGE
                                   BEXT SO4
                                   BEXT NO3
                                    BEXT OC
                                    BEXT EC
                                   BEXT PMC
                                   BEXT PMF
                                   BEXT NO2
                                      dv
                                    (total)
                                      dv
                                     (bkg)
                                     ∆dv

                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                       %
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]

                                     2007
                                Annual Average
                                     0.01
                                     15.66
                                     15.67
                                     0.04
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.00
                                      --
                                     4.49
                                     4.49
                                     0.00
                                     2007
                                98th percentile
                                     0.02
                                     15.55
                                     15.57
                                     0.12
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.02
                                      --
                                     4.43
                                     4.42
                                     0.01
                                   2007 (73)
                                Worst 20% Days
                                     0.01
                                     15.69
                                     15.70
                                     0.09
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.01
                                      --
                                     4.51
                                     4.50
                                     0.01
                                     2008
                                Annual Average
                                     0.004
                                     15.66
                                     15.67
                                     0.03
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.00
                                      --
                                     4.49
                                     4.49
                                     0.00
                                     2008
                                98th percentile
                                     0.01
                                     15.85
                                     15.87
                                     0.09
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.01
                                      --
                                     4.62
                                     4.61
                                     0.01
                                   2008 (73)
                                Worst 20% Days
                                     0.01
                                     15.70
                                     15.71
                                     0.06
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.01
                                      --
                                     4.52
                                     4.51
                                     0.01
                                     2009
                                Annual Average
                                     0.004
                                     15.66
                                     15.67
                                     0.03
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.00
                                      --
                                     4.49
                                     4.49
                                     0.00
                                     2009
                                98th percentile
                                     0.02
                                     15.72
                                     15.74
                                     0.10
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.01
                                      --
                                     4.54
                                     4.53
                                     0.01
                                   2009 (73)
                                Worst 20% Days
                                     0.01
                                     15.69
                                     15.70
                                     0.06
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.01
                                      --
                                     4.51
                                     4.50
                                     0.01
                                     2010
                                Annual Average
                                     0.003
                                     15.66
                                     15.67
                                     0.02
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.00
                                      --
                                     4.49
                                     4.49
                                     0.00
                                     2010
                                98th percentile
                                     0.01
                                     15.72
                                     15.73
                                     0.06
                                     0.00
                                     0.01
                                      --
                                     0.00
                                      --
                                     0.00
                                      --
                                     4.53
                                     4.53
                                     0.01
                                   2010 (73)
                                Worst 20% Days
                                     0.01
                                     15.94
                                     15.95
                                     0.03
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.00
                                      --
                                     4.59
                                     4.59
                                     0.00

Table 41.  Hassel Island NPS Site  -  Group 11  -  St. John Boilers
                                Hassel Island
                                 BEXT (Source)
                                  BEXT (BKG)
                                 BEXT (Total)
                                Percent CHANGE
                                   BEXT SO4
                                   BEXT NO3
                                    BEXT OC
                                    BEXT EC
                                   BEXT PMC
                                   BEXT PMF
                                   BEXT NO2
                                      dv
                                    (total)
                                      dv
                                     (bkg)
                                     ∆dv

                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                       %
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]

                                     2007
                                Annual Average
                                     0.001
                                     15.66
                                     15.66
                                     0.00
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.00
                                      --
                                     4.49
                                     4.49
                                     0.00
                                     2007
                                98th percentile
                                     0.004
                                     15.63
                                     15.63
                                     0.03
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.00
                                      --
                                     4.47
                                     4.46
                                     0.00
                                   2007 (73)
                                Worst 20% Days
                                     0.002
                                     16.81
                                     16.82
                                     0.01
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.00
                                      --
                                     4.84
                                     4.84
                                     0.00
                                     2008
                                Annual Average
                                     0.001
                                     15.66
                                     15.66
                                     0.00
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.00
                                      --
                                     4.49
                                     4.49
                                     0.00
                                     2008
                                98th percentile
                                     0.004
                                     15.85
                                     15.86
                                     0.03
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.00
                                      --
                                     4.61
                                     4.61
                                     0.00
                                   2008 (73)
                                Worst 20% Days
                                     0.002
                                     16.19
                                     16.19
                                     0.02
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.00
                                      --
                                     4.67
                                     4.67
                                     0.00
                                     2009
                                Annual Average
                                    0.0004
                                     15.66
                                     15.66
                                     0.00
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.00
                                      --
                                     4.49
                                     4.49
                                     0.00
                                     2009
                                98th percentile
                                     0.003
                                     15.72
                                     15.73
                                     0.02
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.00
                                      --
                                     4.53
                                     4.53
                                     0.00
                                   2009 (73)
                                Worst 20% Days
                                     0.001
                                     15.94
                                     15.95
                                     0.01
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.00
                                      --
                                     4.59
                                     4.59
                                     0.00
                                     2010
                                Annual Average
                                     0.003
                                     15.66
                                     15.67
                                     0.02
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.00
                                      --
                                     4.49
                                     4.49
                                     0.00
                                     2010
                                98th percentile
                                     0.03
                                     15.72
                                     15.75
                                     0.18
                                     0.00
                                     0.03
                                      --
                                     0.00
                                      --
                                     0.00
                                      --
                                     4.54
                                     4.53
                                     0.02
                                   2010 (73)
                                Worst 20% Days
                                     0.01
                                     15.73
                                     15.75
                                     0.07
                                     0.00
                                     0.01
                                      --
                                     0.00
                                      --
                                     0.00
                                      --
                                     4.54
                                     4.53
                                     0.01

Table 42.  IMPROVE Site  -  Group 12  -  St. John Misc. Industrial/Construction
                                   IMPROVE
                                 BEXT (Source)
                                  BEXT (BKG)
                                 BEXT (Total)
                                Percent CHANGE
                                   BEXT SO4
                                   BEXT NO3
                                    BEXT OC
                                    BEXT EC
                                   BEXT PMC
                                   BEXT PMF
                                   BEXT NO2
                                      dv
                                    (total)
                                      dv
                                     (bkg)
                                     ∆dv

                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                       %
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]

                                     2007
                                Annual Average
                                     4.42
                                     15.66
                                     20.08
                                     28.19
                                     0.00
                                     0.00
                                      --
                                     0.40
                                      --
                                     4.01
                                      --
                                     6.87
                                     4.49
                                     2.39
                                     2007
                                98th percentile
                                     12.07
                                     15.63
                                     27.70
                                     77.24
                                     0.00
                                     0.00
                                      --
                                     1.10
                                      --
                                     10.97
                                      --
                                     10.19
                                     4.46
                                     5.72
                                   2007 (73)
                                Worst 20% Days
                                     9.12
                                     15.67
                                     24.80
                                     58.20
                                     0.00
                                     0.00
                                      --
                                     0.83
                                      --
                                     8.29
                                      --
                                     9.05
                                     4.49
                                     4.55
                                     2008
                                Annual Average
                                     2.99
                                     15.66
                                     18.66
                                     19.10
                                     0.00
                                     0.00
                                      --
                                     0.27
                                      --
                                     2.72
                                      --
                                     6.19
                                     4.49
                                     1.70
                                     2008
                                98th percentile
                                     9.13
                                     15.60
                                     24.73
                                     58.52
                                     0.00
                                     0.00
                                      --
                                     0.83
                                      --
                                     8.30
                                      --
                                     9.06
                                     4.45
                                     4.61
                                   2008 (73)
                                Worst 20% Days
                                     6.06
                                     15.71
                                     21.76
                                     38.58
                                     0.00
                                     0.00
                                      --
                                     0.55
                                      --
                                     5.51
                                      --
                                     7.73
                                     4.51
                                     3.22
                                     2009
                                Annual Average
                                     3.14
                                     15.66
                                     18.81
                                     20.06
                                     0.00
                                     0.00
                                      --
                                     0.29
                                      --
                                     2.86
                                      --
                                     6.26
                                     4.49
                                     1.77
                                     2009
                                98th percentile
                                     10.48
                                     15.72
                                     26.20
                                     66.65
                                     0.00
                                     0.00
                                      --
                                     0.95
                                      --
                                     9.53
                                      --
                                     9.63
                                     4.53
                                     5.11
                                   2009 (73)
                                Worst 20% Days
                                     6.76
                                     15.69
                                     22.45
                                     43.04
                                     0.00
                                     0.00
                                      --
                                     0.61
                                      --
                                     6.14
                                      --
                                     8.03
                                     4.50
                                     3.53
                                     2010
                                Annual Average
                                     2.13
                                     15.66
                                     17.79
                                     13.58
                                     0.00
                                     0.00
                                      --
                                     0.19
                                      --
                                     1.94
                                      --
                                     5.75
                                     4.49
                                     1.26
                                     2010
                                98th percentile
                                     3.52
                                     15.81
                                     19.33
                                     22.29
                                     0.00
                                     0.00
                                      --
                                     0.32
                                      --
                                     3.20
                                      --
                                     6.59
                                     4.58
                                     2.01
                                   2010 (73)
                                Worst 20% Days
                                     3.10
                                     15.75
                                     18.85
                                     19.65
                                     0.00
                                     0.00
                                      --
                                     0.28
                                      --
                                     2.81
                                      --
                                     6.30
                                     4.54
                                     1.76

Modeled using an area source that is more over land and somewhat larger than used above
                                     2009
                                Annual Average
                                     2.73
                                     15.66
                                     18.39
                                     17.41
                                     0.00
                                     0.00
                                      --
                                     0.25
                                      --
                                     2.48
                                      --
                                     6.08
                                     4.49
                                     1.59
                                     2009
                                98th percentile
                                     5.14
                                     15.47
                                     20.60
                                     33.22
                                     0.00
                                     0.00
                                      --
                                     0.47
                                      --
                                     4.67
                                      --
                                     7.23
                                     4.36
                                     2.87
                                   2009 (73)
                                Worst 20% Days
                                     4.15
                                     15.73
                                     19.88
                                     26.35
                                     0.00
                                     0.00
                                      --
                                     0.38
                                      --
                                     3.77
                                      --
                                     6.86
                                     4.53
                                     2.33

Table 43.  Hassel Island NPS Site  -  Group 12  -  St. John Misc. Industrial/Construction
                                Hassel Island
                                 BEXT (Source)
                                  BEXT (BKG)
                                 BEXT (Total)
                                Percent CHANGE
                                   BEXT SO4
                                   BEXT NO3
                                    BEXT OC
                                    BEXT EC
                                   BEXT PMC
                                   BEXT PMF
                                   BEXT NO2
                                      dv
                                    (total)
                                      dv
                                     (bkg)
                                     ∆dv

                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                       %
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]

                                     2007
                                Annual Average
                                     0.14
                                     15.66
                                     15.80
                                     0.88
                                     0.00
                                     0.00
                                      --
                                     0.01
                                      --
                                     0.13
                                      --
                                     4.57
                                     4.49
                                     0.09
                                     2007
                                98th percentile
                                     0.44
                                     15.55
                                     15.99
                                     2.84
                                     0.00
                                     0.00
                                      --
                                     0.04
                                      --
                                     0.40
                                      --
                                     4.70
                                     4.42
                                     0.28
                                   2007 (73)
                                Worst 20% Days
                                     0.31
                                     15.66
                                     15.98
                                     1.99
                                     0.00
                                     0.00
                                      --
                                     0.03
                                      --
                                     0.28
                                      --
                                     4.68
                                     4.49
                                     0.20
                                     2008
                                Annual Average
                                     0.10
                                     15.66
                                     15.77
                                     0.66
                                     0.00
                                     0.00
                                      --
                                     0.01
                                      --
                                     0.09
                                      --
                                     4.55
                                     4.49
                                     0.07
                                     2008
                                98th percentile
                                     0.41
                                     15.63
                                     16.03
                                     2.60
                                     0.00
                                     0.00
                                      --
                                     0.04
                                      --
                                     0.37
                                      --
                                     4.72
                                     4.46
                                     0.26
                                   2008 (73)
                                Worst 20% Days
                                     0.29
                                     15.71
                                     15.99
                                     1.82
                                     0.00
                                     0.00
                                      --
                                     0.03
                                      --
                                     0.26
                                      --
                                     4.69
                                     4.51
                                     0.18
                                     2009
                                Annual Average
                                     0.13
                                     15.66
                                     15.80
                                     0.85
                                     0.00
                                     0.00
                                      --
                                     0.01
                                      --
                                     0.12
                                      --
                                     4.57
                                     4.49
                                     0.08
                                     2009
                                98th percentile
                                     0.48
                                     15.58
                                     16.06
                                     3.05
                                     0.00
                                     0.00
                                      --
                                     0.04
                                      --
                                     0.43
                                      --
                                     4.74
                                     4.44
                                     0.30
                                   2009 (73)
                                Worst 20% Days
                                     0.35
                                     15.68
                                     16.03
                                     2.23
                                     0.00
                                     0.00
                                      --
                                     0.03
                                      --
                                     0.32
                                      --
                                     4.72
                                     4.50
                                     0.22
                                     2010
                                Annual Average
                                     0.39
                                     15.66
                                     16.06
                                     2.52
                                     0.00
                                     0.00
                                      --
                                     0.04
                                      --
                                     0.36
                                      --
                                     4.73
                                     4.49
                                     0.25
                                     2010
                                98th percentile
                                     0.68
                                     15.72
                                     16.40
                                     4.29
                                     0.00
                                     0.00
                                      --
                                     0.06
                                      --
                                     0.61
                                      --
                                     4.95
                                     4.53
                                     0.42
                                   2010 (73)
                                Worst 20% Days
                                     0.61
                                     15.72
                                     16.33
                                     3.90
                                     0.00
                                     0.00
                                      --
                                     0.06
                                      --
                                     0.56
                                      --
                                     4.91
                                     4.52
                                     0.38

Modeled using an area source that is more over land and somewhat larger than used above
                                     2009
                                Annual Average
                                     0.31
                                     15.66
                                     15.97
                                     1.95
                                     0.00
                                     0.00
                                      --
                                     0.03
                                      --
                                     0.28
                                      --
                                     4.68
                                     4.49
                                     0.19
                                     2009
                                98th percentile
                                     1.00
                                     15.76
                                     16.76
                                     6.37
                                     0.00
                                     0.00
                                      --
                                     0.09
                                      --
                                     0.91
                                      --
                                     5.16
                                     4.55
                                     0.62
                                   2009 (73)
                                Worst 20% Days
                                     0.77
                                     15.68
                                     16.45
                                     4.92
                                     0.00
                                     0.00
                                      --
                                     0.07
                                      --
                                     0.70
                                      --
                                     4.98
                                     4.50
                                     0.48

Table 44.  IMPROVE Site  -  Group 13  -  St. John Onroad
                                   IMPROVE
                                 BEXT (Source)
                                  BEXT (BKG)
                                 BEXT (Total)
                                Percent CHANGE
                                   BEXT SO4
                                   BEXT NO3
                                    BEXT OC
                                    BEXT EC
                                   BEXT PMC
                                   BEXT PMF
                                   BEXT NO2
                                      dv
                                    (total)
                                      dv
                                     (bkg)
                                     ∆dv

                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                       %
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]

                                     2007
                                Annual Average
                                     0.07
                                     15.66
                                     15.73
                                     0.46
                                     0.01
                                     0.01
                                      --
                                     0.01
                                      --
                                     0.05
                                      --
                                     4.53
                                     4.49
                                     0.05
                                     2007
                                98th percentile
                                     0.19
                                     15.60
                                     15.78
                                     1.19
                                     0.03
                                     0.01
                                      --
                                     0.01
                                      --
                                     0.13
                                      --
                                     4.56
                                     4.44
                                     0.12
                                   2007 (73)
                                Worst 20% Days
                                     0.14
                                     15.69
                                     15.83
                                     0.87
                                     0.02
                                     0.02
                                      --
                                     0.01
                                      --
                                     0.09
                                      --
                                     4.59
                                     4.50
                                     0.09
                                     2008
                                Annual Average
                                     0.06
                                     15.66
                                     15.72
                                     0.38
                                     0.01
                                     0.01
                                      --
                                     0.00
                                      --
                                     0.04
                                      --
                                     4.52
                                     4.49
                                     0.04
                                     2008
                                98th percentile
                                     0.17
                                     15.85
                                     16.02
                                     1.06
                                     0.01
                                     0.05
                                      --
                                     0.01
                                      --
                                     0.10
                                      --
                                     4.71
                                     4.61
                                     0.11
                                   2008 (73)
                                Worst 20% Days
                                     0.11
                                     15.72
                                     15.83
                                     0.72
                                     0.02
                                     0.02
                                      --
                                     0.01
                                      --
                                     0.07
                                      --
                                     4.59
                                     4.52
                                     0.07
                                     2009
                                Annual Average
                                     0.06
                                     15.66
                                     15.72
                                     0.40
                                     0.01
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.05
                                      --
                                     4.53
                                     4.49
                                     0.04
                                     2009
                                98th percentile
                                     0.16
                                     15.81
                                     15.97
                                     1.02
                                     0.03
                                     0.01
                                      --
                                     0.01
                                      --
                                     0.11
                                      --
                                     4.68
                                     4.58
                                     0.10
                                   2009 (73)
                                Worst 20% Days
                                     0.12
                                     15.76
                                     15.88
                                     0.79
                                     0.02
                                     0.01
                                      --
                                     0.01
                                      --
                                     0.08
                                      --
                                     4.63
                                     4.55
                                     0.08
                                     2010
                                Annual Average
                                     0.06
                                     15.66
                                     15.72
                                     0.36
                                     0.01
                                     0.01
                                      --
                                     0.00
                                      --
                                     0.04
                                      --
                                     4.52
                                     4.49
                                     0.04
                                     2010
                                98th percentile
                                     0.16
                                     15.81
                                     15.97
                                     0.99
                                     0.03
                                     0.06
                                      --
                                     0.01
                                      --
                                     0.06
                                      --
                                     4.68
                                     4.58
                                     0.10
                                   2010 (73)
                                Worst 20% Days
                                     0.11
                                     15.77
                                     15.88
                                     0.67
                                     0.01
                                     0.03
                                      --
                                     0.01
                                      --
                                     0.06
                                      --
                                     4.62
                                     4.56
                                     0.07

Table 45.  Hassel Island NPS Site  -  Group 13  -  St. John Onroad
                                Hassel Island
                                 BEXT (Source)
                                  BEXT (BKG)
                                 BEXT (Total)
                                Percent CHANGE
                                   BEXT SO4
                                   BEXT NO3
                                    BEXT OC
                                    BEXT EC
                                   BEXT PMC
                                   BEXT PMF
                                   BEXT NO2
                                      dv
                                    (total)
                                      dv
                                     (bkg)
                                     ∆dv

                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                       %
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]

                                     2007
                                Annual Average
                                     0.01
                                     15.66
                                     15.68
                                     0.08
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.01
                                      --
                                     4.49
                                     4.49
                                     0.01
                                     2007
                                98th percentile
                                     0.05
                                     15.63
                                     15.68
                                     0.35
                                     0.01
                                     0.04
                                      --
                                     0.00
                                      --
                                     0.00
                                      --
                                     4.50
                                     4.46
                                     0.03
                                   2007 (73)
                                Worst 20% Days
                                     0.03
                                     15.67
                                     15.71
                                     0.20
                                     0.01
                                     0.01
                                      --
                                     0.00
                                      --
                                     0.01
                                      --
                                     4.51
                                     4.49
                                     0.02
                                     2008
                                Annual Average
                                     0.01
                                     15.66
                                     15.68
                                     0.09
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.01
                                      --
                                     4.50
                                     4.49
                                     0.01
                                     2008
                                98th percentile
                                     0.05
                                     15.60
                                     15.64
                                     0.31
                                     0.02
                                     0.01
                                      --
                                     0.00
                                      --
                                     0.02
                                      --
                                     4.48
                                     4.44
                                     0.03
                                   2008 (73)
                                Worst 20% Days
                                     0.04
                                     15.68
                                     15.72
                                     0.25
                                     0.01
                                     0.01
                                      --
                                     0.00
                                      --
                                     0.01
                                      --
                                     4.52
                                     4.50
                                     0.02
                                     2009
                                Annual Average
                                     0.01
                                     15.66
                                     15.67
                                     0.07
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.01
                                      --
                                     4.49
                                     4.49
                                     0.01
                                     2009
                                98th percentile
                                     0.04
                                     15.72
                                     15.76
                                     0.24
                                     0.01
                                     0.02
                                      --
                                     0.00
                                      --
                                     0.01
                                      --
                                     4.55
                                     4.53
                                     0.02
                                   2009 (73)
                                Worst 20% Days
                                     0.03
                                     15.68
                                     15.70
                                     0.17
                                     0.01
                                     0.01
                                      --
                                     0.00
                                      --
                                     0.01
                                      --
                                     4.51
                                     4.50
                                     0.02
                                     2010
                                Annual Average
                                     0.04
                                     15.66
                                     15.70
                                     0.25
                                     0.01
                                     0.01
                                      --
                                     0.00
                                      --
                                     0.02
                                      --
                                     4.51
                                     4.49
                                     0.02
                                     2010
                                98th percentile
                                     0.19
                                     15.72
                                     15.92
                                     1.23
                                     0.02
                                     0.15
                                      --
                                     0.00
                                      --
                                     0.02
                                      --
                                     4.65
                                     4.53
                                     0.12
                                   2010 (73)
                                Worst 20% Days
                                     0.09
                                     15.77
                                     15.86
                                     0.55
                                     0.02
                                     0.05
                                      --
                                     0.00
                                      --
                                     0.02
                                      --
                                     4.61
                                     4.55
                                     0.05

Table 46. IMPROVE Site  -  Group 17  -  St. John Nonroad
                                   IMPROVE
                                 BEXT (Source)
                                  BEXT (BKG)
                                 BEXT (Total)
                                Percent CHANGE
                                   BEXT SO4
                                   BEXT NO3
                                    BEXT OC
                                    BEXT EC
                                   BEXT PMC
                                   BEXT PMF
                                   BEXT NO2
                                      dv
                                    (total)
                                      dv
                                     (bkg)
                                     ∆dv

                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                       %
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]

                                     2007
                                Annual Average
                                     0.16
                                     15.66
                                     15.83
                                     1.05
                                     0.01
                                     0.00
                                      --
                                     0.01
                                      --
                                     0.13
                                      --
                                     4.59
                                     4.49
                                     0.10
                                     2007
                                98th percentile
                                     0.41
                                     15.60
                                     16.01
                                     2.62
                                     0.05
                                     0.04
                                      --
                                     0.03
                                      --
                                     0.29
                                      --
                                     4.71
                                     4.45
                                     0.26
                                   2007 (73)
                                Worst 20% Days
                                     0.30
                                     15.69
                                     15.99
                                     1.92
                                     0.03
                                     0.01
                                      --
                                     0.02
                                      --
                                     0.24
                                      --
                                     4.69
                                     4.50
                                     0.19
                                     2008
                                Annual Average
                                     0.14
                                     15.66
                                     15.80
                                     0.87
                                     0.01
                                     0.00
                                      --
                                     0.01
                                      --
                                     0.11
                                      --
                                     4.57
                                     4.49
                                     0.09
                                     2008
                                98th percentile
                                     0.33
                                     15.85
                                     16.18
                                     2.06
                                     0.01
                                     0.04
                                      --
                                     0.03
                                      --
                                     0.25
                                      --
                                     4.81
                                     4.61
                                     0.20
                                   2008 (73)
                                Worst 20% Days
                                     0.24
                                     15.69
                                     15.93
                                     1.52
                                     0.02
                                     0.01
                                      --
                                     0.02
                                      --
                                     0.19
                                      --
                                     4.66
                                     4.51
                                     0.15
                                     2009
                                Annual Average
                                     0.15
                                     15.66
                                     15.81
                                     0.93
                                     0.01
                                     0.00
                                      --
                                     0.01
                                      --
                                     0.12
                                      --
                                     4.58
                                     4.49
                                     0.09
                                     2009
                                98th percentile
                                     0.36
                                     15.81
                                     16.17
                                     2.28
                                     0.03
                                     0.01
                                      --
                                     0.03
                                      --
                                     0.29
                                      --
                                     4.81
                                     4.58
                                     0.23
                                   2009 (73)
                                Worst 20% Days
                                     0.28
                                     15.76
                                     16.03
                                     1.77
                                     0.02
                                     0.01
                                      --
                                     0.02
                                      --
                                     0.22
                                      --
                                     4.72
                                     4.55
                                     0.18
                                     2010
                                Annual Average
                                     0.13
                                     15.66
                                     15.79
                                     0.82
                                     0.01
                                     0.00
                                      --
                                     0.01
                                      --
                                     0.10
                                      --
                                     4.57
                                     4.49
                                     0.08
                                     2010
                                98th percentile
                                     0.29
                                     15.85
                                     16.15
                                     1.86
                                     0.02
                                     0.12
                                      --
                                     0.01
                                      --
                                     0.14
                                      --
                                     4.79
                                     4.61
                                     0.18
                                   2010 (73)
                                Worst 20% Days
                                     0.21
                                     15.77
                                     15.98
                                     1.34
                                     0.02
                                     0.02
                                      --
                                     0.02
                                      --
                                     0.16
                                      --
                                     4.68
                                     4.55
                                     0.13

Table 47.  Hassel Island NPS Site  -  Group 17  -  St. John Nonroad
                                Hassel Island
                                 BEXT (Source)
                                  BEXT (BKG)
                                 BEXT (Total)
                                Percent CHANGE
                                   BEXT SO4
                                   BEXT NO3
                                    BEXT OC
                                    BEXT EC
                                   BEXT PMC
                                   BEXT PMF
                                   BEXT NO2
                                      dv
                                    (total)
                                      dv
                                     (bkg)
                                     ∆dv

                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                       %
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]
                                    Mm[-1]

                                     2007
                                Annual Average
                                     0.02
                                     15.66
                                     15.69
                                     0.15
                                     0.01
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.01
                                      --
                                     4.50
                                     4.49
                                     0.01
                                     2007
                                98th percentile
                                     0.08
                                     15.60
                                     15.67
                                     0.50
                                     0.02
                                     0.02
                                      --
                                     0.00
                                      --
                                     0.04
                                      --
                                     4.49
                                     4.44
                                     0.05
                                   2007 (73)
                                Worst 20% Days
                                     0.05
                                     15.68
                                     15.74
                                     0.34
                                     0.01
                                     0.01
                                      --
                                     0.00
                                      --
                                     0.03
                                      --
                                     4.53
                                     4.50
                                     0.03
                                     2008
                                Annual Average
                                     0.02
                                     15.66
                                     15.69
                                     0.16
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.02
                                      --
                                     4.50
                                     4.49
                                     0.02
                                     2008
                                98th percentile
                                     0.09
                                     15.76
                                     15.84
                                     0.55
                                     0.02
                                     0.05
                                      --
                                     0.00
                                      --
                                     0.01
                                      --
                                     4.60
                                     4.55
                                     0.05
                                   2008 (73)
                                Worst 20% Days
                                     0.07
                                     15.67
                                     15.74
                                     0.42
                                     0.01
                                     0.01
                                      --
                                     0.00
                                      --
                                     0.04
                                      --
                                     4.54
                                     4.49
                                     0.04
                                     2009
                                Annual Average
                                     0.02
                                     15.66
                                     15.68
                                     0.13
                                     0.00
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.01
                                      --
                                     4.50
                                     4.49
                                     0.01
                                     2009
                                98th percentile
                                     0.06
                                     15.76
                                     15.82
                                     0.39
                                     0.02
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.04
                                      --
                                     4.59
                                     4.55
                                     0.04
                                   2009 (73)
                                Worst 20% Days
                                     0.05
                                     15.68
                                     15.73
                                     0.31
                                     0.01
                                     0.00
                                      --
                                     0.00
                                      --
                                     0.03
                                      --
                                     4.53
                                     4.50
                                     0.03
                                     2010
                                Annual Average
                                     0.07
                                     15.66
                                     15.73
                                     0.42
                                     0.01
                                     0.01
                                      --
                                     0.00
                                      --
                                     0.04
                                      --
                                     4.53
                                     4.49
                                     0.04
                                     2010
                                98th percentile
                                     0.19
                                     15.85
                                     16.04
                                     1.18
                                     0.02
                                     0.13
                                      --
                                     0.00
                                      --
                                     0.03
                                      --
                                     4.72
                                     4.61
                                     0.12
                                   2010 (73)
                                Worst 20% Days
                                     0.11
                                     15.76
                                     15.88
                                     0.73
                                     0.02
                                     0.03
                                      --
                                     0.01
                                      --
                                     0.05
                                      --
                                     4.62
                                     4.55
                                     0.07

3. FERRIES, CRUISE SHIPS, CARGO SHIPS
One of the modeled receptor locations is collocated at the IMPROVE site.  Comparing Table 1 to Table 3, the modeled extinction is generally much less than the observed extinction.  The site is a little over 500 meters north of the Cruz Bay (Figure 1) and the docks where cruise lines, ferries and cargo ships arrive and it is expected that there would be more of an impact from those sources on the modeled.
One possible explanation is the persistence of the trade winds.  Annual and 4-year wind roses were developed for San Juan L M Martin airport on Puerto Rico (Figures 3 through 7) and Charlotte Amalie, St. Thomas for 2007 through 2010 (Figures 8 through 12).  From these roses, the persistence of the winds from the east is very apparent.  The frequency of winds from the south and southwest, from Cruz Bay toward the IMPROVE receptor location, is minimal.
Other possibilities to explain this difference were examined.  The modeled height of the receptor at the IMPROVE site is 46 meters (151 feet).  The height was adjusted downward to 0 meters, and up to 92 meters, 138 meters, and 184 meters.  The resulting change in deciviews (dv) ranged from 0.01 (at 0 meters) to 0.08 (at 138 and 184 meters).
The point sources representing the three marine sources were also moved `upwind' (to the northeast) of the IMPROVE location and leaving the receptor height at 46 meters.  The result was dv = 0.01.  Again, with the sources `upwind', the exit velocity from each stack was cut in half.  There was no change in the impacts.
It is unclear at this time why the marine sources do not result in modeled impacts at the IMPROVE receptor that more closely match the observed impacts.  For purposes of this modeling effort, emissions were spread over an entire year.  Another possibility to investigate is the time the emissions are released.  It may be possible to run CALPUFF for those periods when, for example, cruise ships are normally maneuvering to dock or hotelling in Cruz Bay.  However, setting up the model to handle individual days and examine the resulting impact would require additional time and resources.  Nor is it clear that CALPUFF and analysis of the results can easily be run in this mode.

Figure 11.  Wind Rose for San Martin Airport, Puerto Rico, 2007-2010

Figure 12.  Wind Rose for San Martin Airport, Puerto Rico, 2007

Figure 13.  Wind Rose for San Martin Airport, Puerto Rico, 2008

Figure 14.  Wind Rose for San Martin Airport, Puerto Rico, 2009

Figure 15.  Wind Rose for San Martin Airport, Puerto Rico, 2010

Figure 16.  Wind Rose for Charlotte Amalie, St. Thomas, 2007-2010

Figure 17.  Wind Rose for Charlotte Amalie, St. Thomas, 2007

Figure 18.  Wind Rose for Charlotte Amalie, St. Thomas, 2008

Figure 19.  Wind Rose for Charlotte Amalie, St. Thomas, 2009

Figure 20.  Wind Rose for Charlotte Amalie, St. Thomas, 2010