AMEC

4021 Stirrup Creek, Suite 100 Durham, NC 27703 USA Tel +1 (919) 381 9900 Fax +1 (919) 281 9901 www.amec.com 

### DA **TE:** 4 June 2012 **TO:** Robert Kelly, EPA Region 2 **FROM:** James Paumier, AMEC

EPA Contract EP-W-09-02 , Task Order 0234 AM EC Project 6480110234 **SUBJECT:** Air Quality Modeling for Sources Affecting the National Park Service Class I

Area on St. John, Virgin Islands, in support of the Regional Haze SIP for the Virgin Islands : Final Model Runs for Visibility Reduction This memorandum summarizes the final modeling performed under the above referenced contract for the Virgin Islands (VI) regional haze modeling . Section 1 discusses visibility observations at the Interagency Monitoring of P rotected Visual Environments (IM PROVE) site on St. John, Virgin Islands. Visibility observations are tabulated and graphed. Section 2 describes the various sources in the U.S. and British Virgin Islands that were modeled using the CALPUFF modeling system, including modeling conducted with reductions to emissions applied to the Hovensa sources as well as the marine vessels (ferry, cargo and cruise ships). Section 3 describes the receptor network used in the modeling. Model results are tabulated in Section 4. I n Section 5, possible explanations as to why the modeled visibility impacts at the IMPROVE site are less than the observed visibility impacts are briefly examined. As part of

this examination, wind roses from the two surface stations used in the modeling are presented.Air Quality Modeling in Support of the Regional Haze SIP for the Virgin Islands: June 2012

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### 1. **VISIBILITY OBSERVATION** **S AT**  **THE U.S. VIRGIN ISLANDS**  **IMPROVE SITE** According to the IM PROVE web site 1 

### , the IM PROVE program is a cooperative measurement effort established in 1985 to aid in the creation of Federal and State implementation plans for the protection of visibility in Class I areas. The objectives of the IMPROVE program are: (1) to establish current visibility and aerosol conditions in mandatory class I areas; (2) to identify chemical species and emission sources responsible for existing man- made visibility impairment; (3) to document long -term trends for assessing progress towards the national visibility goal; and (4) to provide regional haze monitoring representing all visibility- protected federal class I areas where practical. Figure 1 shows the location of the IM PROVE monitor (red balloon icon) on St. John , north of Cruz Bay, which is the main port on St. John. The Virgin Islands (VI) National Park, a Class I area over 7000 acres in size, is on the island of St. John. Additionally, Hassel Island, immediately south of Charlotte Amalie, St. Thomas (not shown in the figure ) and about 15 kilometers to the west of Cruz bay and the IM PROVE monitor location, is also part of the VI National Park. To assess visibility impacts at Class I areas, the National Park Service has predefined receptor locations in Class I areas at wh ich visibility modeling is performed. For the VI National Park, 75 receptors have been defined, with one of those receptors on Hassel Island. Several Class I receptor locations for modeling purposes are shown (blue balloon icons) in Figure 1.

1 http://vista.cira.colostate.edu/improve/Overview/IMPROVEProgram_files/frame.htmAir Quality Modeling in Support of the Regional Haze SIP for the Virgin Islands: June 2012

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### Figure **1 . Location of the IMPROVE Receptor on**  **St. John, Virgin Islands.** Particulate matter samples are taken every three days at the IM PROVE monitor. From these data, we can calculate the impact of particulate matter on visibility at the site. Table 1 shows the observed annual average, best 20% of days and worst 20% of days at the IM PROVE monitor on St. John for the period 2007-2010. IM PROVE m onitori ng data tables present the following information:

 BEXT (Source) – calculated beta extinction coefficient (total IM PROVE monitor value – modeled annual average background) ;
 BEXT (BKG) – background beta extinction coefficient (from modeled annual background) ;  BEXT (Total) – beta extinction coefficient recorded at IMPROVE monitor;Air Quality Modeling in Support of the Regional Haze SIP for the Virgin Islands: June 2012

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###  BEXT SO4 – beta extinction coefficient from IMPROVE monitor SO4 

### ;  BEXT NO3 – beta extinction coefficient from IMPROVE monitor NO 3 

### ;  BEXT OC – beta extinction coefficient from IMPROVE monitor organic carbon ;  BEXT EC – beta extinction coefficient from I MPROVE monitor elemental carbon;

 BEXT PMC – beta extinction coefficient from IMPROVE monitor coarse particulate matter;  BEXT PMF – beta extinction coefficient from IMPROVE monitor fine particulate matter;  BEXT NO2 – beta extinction coefficient from IMPROVE monitor NO 2 

### ;  dv (total) – d eciview haze index from monitor emissions + modeled background ;  dv (bkg) – d eciview haze index from modeled background ; and
 ∆dv – change in d eciview haze index = total monitored – background modeled emissions . The graphs that follow Table 1 summarize the observed daily extinction by species at the IM PROVE site on St. John. The light blue background in the cells is only meant to more easily identify the years. Ammonium nitrate fine (ammNO3f), ammonium sulfate-fine (ammSO4f), elemental carbon-fine (ECf), organic carbon -fi ne (OCMf), and sea salt-fi ne (SeaSaltf) are displayed. Omitted from the figures are coarse mass extinction, soil extinction (fine), and Rayleig h scattering. Since o bservations are taken every third day, observations are reported on no more than 121 or 122 days each year. For 2007, visibility data were reported for 84 days; for 2008, 2009, and 2010, the number of days reporting is 113, 114, and 1 18, respectively. T his corresponds to 17 days for the “Best 20%” and 17 for the “Worst 20%” days for 2007, whereas, for 2008-2010, 23 days correspond to the “Best 20%” and “Worst 20%”. Labels for the “Best 20%” (B) and “Worst 20%” (W ) of

d ays based on ae rosol extinction (which includes coarse mass extinction, soil extinction (fine)) are shown above the bars. Note that for 2007-2009, the maximum on the y-axis is 60 Mm - 1 

### , whereas for 2010 it is 80 Mm - 1



### .Air Quality Modeling in Support of the Regional Haze SIP for the Virgin Islands: June 2012

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### Table **1 . IMPROVE Monitoring Site**  **- Observations, 2007** **- 2010** 

**BEXT (Source)**  **BEXT**

**(BKG)*** **BEXT**

**(Total) BEXT** 

**SO4 BEXT**  **NO3 BEXT** 

**OC BEXT** 

**EC BEXT** 

**PMC BEXT** 

**PMF BEXT** 

**NO2 BEXT** 

**Ssalt 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 Mm**  **- 1**  2007 IMPROVE - Annual Average 24.78 15.60 40.38 9.14 2.01 0.68 0.49 6.76 2.47 -- 7.83 13.96 4.45 9.51 2007 IMPROVE - Best 20% Days 10.08 15.60 25.68 5.15 1.38 0.48 0.44 3.13 0.25 -- 3.84 9.43 4.45 4.99 2007 IMPROVE - Worst 20% Days 50.06 15.60 65.66 14.93 3.59 1.23 0.61 14.15 8.44 -- 11.70 18.82 4.45 14.37 2008 IMPROVE - Annual Average 24.20 15.60 39.80 7.66 1.80 0.70 0.48 6.96 2.13 -- 9.07 13.81 4.45 9.37 2008 IMPROVE - Best 20% Days 8.95 15.60 24.55 4.67 1.14 0.59 0.35 2.96 0.30 -- 3.55 8.98 4.45 4.54 2008 IMPROVE - Worst 20% Days 48.15 15.60 63.75 11.57 2.87 0.80 0.32 14.11 7.42 -- 15.66 18.52 4.45 14.08 2009 IMPROVE - Annual Average 26.00 15.60 41.60 8.94 1.75 1.10 0.78 6.94 2.32 -- 8.76 14.26 4.45 9.81 2009 IMPROVE - Best 20% Days 11.61 15.60 27.21 5.87 1.31 0.48 0.41 3.28 0.25 -- 4.63 10.01 4.45 5.56 2009 IMPROVE - Worst 20% Days 51.40 15.60 67.00 15.31 2.66 2.83 2.27 13.87 8.36 -- 10.71 19.02 4.45 14.57 2010 IMPROVE - Annual Average 30.14 15.60 45.74 10.86 1.94 1.06 1.61 8.34 3.34 -- 7.57 15.20 4.45 10.75 2010 IMPROVE - Best 20% Days 10.29 15.60 25.89 5.42 1.18 0.19 0.31 3.40 0.18 -- 4.21 9.51 4.45 5.06 2010 IMPROVE - Worst 20% Days 64.36 15.60 79.96 17.69 3.21 3.31 5.49 18.16 12.39 -- 8.71 20.79 4.45 16.34 * Background [BEXT (BKG)] is assumed to be the same as average modeled background. All values other than BEXT (Total) in th is table rely on the assumed background.Air Quality Modeling in Support of the Regional Haze SIP for the Virgin Islands: June 2012

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### B B B B B

W W

B W

W W

W

W

B W

W W W

W W

W W

BB BB B B B W W

B B

B

0 10 20 30 40 50 60

Jan 07 Fe b 07 Ma r07 Apr07 May07 Jun 07 Jul07 Aug07 Se p 07 Oct07 Nov07 De c07**M m** **- 1**  

# Observed Da ily Aerosol Beta Exti ncti on atI MP ROVE Si te St. John,U S Virgi n Isl ands

ammN O3-f ammSO4-f EC-f OMC-f Se aS alt-f 

# 2007Air Quality Modeling in Support of the Regional Haze SIP for the Virgin Islands: June 2012

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### B B B B W

B B W

B W W

W W

B W W W

W W

W W W

W W W W W W

B W

B B

B B B B B W

B B

B W

B B B B

0 10 20 30 40 50 60

Jan 08 Fe b08 Ma r08 Apr08 May08 Jun 08 Jul08 Aug08 Se p 08 Oct08 Nov08 De c08**M m** **- 1**  

# Ob served Daily Aerosol Beta E xti ncti on atI MP ROV E Si te St. John,U S Virgi n Isl ands

ammN O3-f ammSO4-f EC- f OMC-f Se aS alt-f 

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### B W W

W

B B

B B B

B B B

B W

W

B W W

W W

W W W

W W

W W W

B W W

B B B W

B W W

B B B B B B B B W

0 10 20 30 40 50 60

Ja n 09 Fe b09 Mar09 Apr09 May09 Jun 09 Jul09 Aug09 Sep 09 Oct09 Nov09 De c09**M m** **- 1**  

# Observed Da ily Aerosol Beta Exti ncti on atI MP ROVE Si te St. John,U S Virgi n Isl ands

ammN O3-f ammSO4-f EC-f OMC-f Se aS alt-f 

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### B B B B W W

B W

W

B W

B

B B W

B W

W

W W W W W

W

B B W

B B W

W W W W

W

B B W

B B B B B B W

B B B B B B

0 10 20 30 40 50 60 70 80

Ja n 10 Fe b 10 Mar10 Apr10 May10 Jun 10 Jul10 Aug10 Sep 10 Oct10 Nov10 De c10**M m** **- 1**  

# Observed Da ily Aerosol Beta Exti ncti on atI MP ROVE Si te St. John,U S Virgi n Isl ands

ammNO3-f ammSO4-f EC-f OMC-f Se aS alt-f 

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### 2. **SOURCES MODELED** AM EC developed a list of point sources and area sources for use in this model ing effort . Most of the sources and the associated parameters and emission rates were defined for the March 2011 modeling. Table 1 shows the sources modeled with the respective emission rates for SO 2 

### , NOX

### , fine particulates, and elemental carbon. In this phase of the modeling, emission rates from BART-eligible sources were used (Hovensa, St. Croix WAPA, and St. Thomas WAPA). The sources are also divided into several logical categories to provide group-specific m odel results based on groups identified in the Task Order and several additional groups provided by the Task Order Project Officer (TOPO) . Several sources of information were used to develop the list of sources, groupings of sources, emission rates, and source parameters. These include:

 AEG Anguilla Power Renewable Energy Power Generation Project (Table 6-4) with source parameters and emission rates (received 12/2010) ;
 AEG Bovoni Power, LLC (Table A-5) Nearby Inventory with source parameters and emission rates (received 12/15/2011) ;
 The spreadsheet St. John – Emissions Calculations.xls with emissions data for a number of sources on St. John (received 12/2010) ;
 Development of 2002 Regional Haze Area, Point, Nonroad Mobile, a nd Onroad Mobile Source Emission Inventories For St. John, Virgin Island - Draft Report (received 12/2010) ;
 Central Intelligence Agency (CIA) World Factbook; and

 E mail correspondence . The sources in each group are explained in more detail in the discussion below. Group 1 - St . Croix – Hovensa Point Sources Sources in this group were selected from Table 6-4 of the AEG Anguilla Project Report. In the original modeling (prior to modeling BART-eligible sources), th is group contained seven sources (six of the largest sources and one aggregate of the remaining sources), representing a total of approximately 75% of

St. Croix’s total emissions. S ince there were over 170 sources on St. Croix, the model was limited to major emission points which were the electric utilities and the top 3 emitters of PM, SO 2 

### , or NOX

### . St. Croix sources were split between Groups 1 and 6, withAir Quality Modeling in Support of the Regional Haze SIP for the Virgin Islands: June 2012

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### Group 1 representing only the Hovensa refinery, and Group 6 representing Water and Power Authority (WAPA) St. Croix sources. For this modeling effort, BART-eligible boilers, heaters, flares, and reciprocating gas compressors at Hovensa were explicitly modeled. T he result was 65 BART-eligible point sources. T he aggregated source consisted of the nonBART sources . E mission rates for the aggregate source do not include any BART-eligible sources (i.e., no double counting of emissions) . Emissions regarding the flares were provided as a sum for the entire facility, with pote ntial to emit rates of

1 200 tpy SO 2 

### , 1897 tpy NO X

### , and negligible PMe missions. Ten flares were identified at Hovensa in the AEG Anguilla inventory, with zero emissions for two of them. Per email correspondence on May 11, 2012, only five flares are BART-eligible. A proportion of the total emissions (5 BART flares / 8 total flares) was used to approximate the BART flare emissions. Additional model run s were conducted for each year applying selected emissions reductions: 1) reductions to Hovensa emissions based on a Consent Decree and 2) reductions to the marine vessels (ferries, cargo ships, and cruise ships). The reductions are discussed prior to Table 2. Group 2 – Actual St. John Point Sources Sources in this category represent the actual point sources originally provided to AM EC by the TOPO for the original modeling completed in March 2011 . Stack parameters for these sources have been estimated by AMEC using parameters for generic generators, since no such information was presented with the emissions calculations. Two additional sources obtained from the AEG Bovoni Power inventory were ad ded for the current modeling effort: the Virgin Grand generator and the Virgin Grand incinerator. This category con sists of seven (7 ) point sources. Group 3 – Ag gregate St. John Marine Sources Marine sources at St. John include all ferry, cruise s hip, and cargo s hip emissions specified in the St. John – Emissions Calculations spreadsheet. Each vessel type was modeled as a separate aggregated source (e.g. all fe rry emissions as a single source). The three different types of marine vessels were represented with different stack parameters obtained from typical cruise ship data specifications. An additional model run with reduced emissions was also conducted. As a conservative assumption, all three types of marine sources were modeled asAir Quality Modeling in Support of the Regional Haze SIP for the Virgin Islands: June 2012

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### point so urces located at the Cruz Bay docks, rather than spreading the emissions over a greater area. As noted above for the Hovensa source group, an alternative set of e mission rates for the marine sources at St. John was modeled . The reductions are discussed prior to Table 2. Group 4 – Sample Puerto Rico Sources E missions and stack location are based on the AES Puerto Rico, L.P. 454 MWcoal fired power plant in Guayama, Puerto Rico. T he stack parameters are based on a similarly sized coal -fired boiler. Grou p 5 - Actual St. Thomas Sources In the current modeling effort this source group was removed because the source was included as one of the St. Thomas WAPA sources in the newly added Group 14. Group 6 – Other St. Croix Sources Sources in this category are from Table 6-4 of the AEG Anguilla Power report and emissions rates were updated, if

n ecessary, with rates from the AEG Bovoni Power report. This group consists of eight sources – seven individual point sources and 1 aggregated point source. S ix of the individual point sources are St. Croix WAPA and the seventh is the large boiler at Renaissance Group I.L.L.P. T he aggregated source consists of seven point sources, including the large and small generators at Renaissance, the Buccaneer Hotel, Divi Carina Bay Resort, Carambola Resort, and oil burners at Virgin Island Asphalt Products Corporation. The location and stack parameters for the aggregated source were conservatively represented by placing the source in the same location as the largest emitter of P M10 on St. Croix, the Hovensa wet scrubber, which was modeled in Group 1. The large boiler at Renaissance accounts for about 95% of the SO 2 

### emissions and 65% of the NOX 

### emissions in the two nonWAPA sources. For this modeling effort, two boilers at WAPA, model IDs W PSX10 and WPSX11, were modeled as BART-eligible sources . Per data provided in a spreadsheet on February 23, 2012 and a follow- up email on March 6, the 3-year average actual emissions were used for the St. Croix BART-eligible WAPA sources. The other four St. Croix WAPA sources were not BART-eligible and emission rates from the AEG Anguilla report were used .Air Quality Modeling in Support of the Regional Haze SIP for the Virgin Islands: June 2012

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### Group 7 – Aggregate Briti sh Virgin Islands (BVI) Sources This category represents emissions from total oil usage on the BVI. T he oil usage data was selected from the Central Intelligence Ag ency (CIA) World Factbook (1000 bbl/day). T he Department of

E nergy (DOE) website indicates that residual oil is not consum ed in significant quantity in the BVIs, so only a distillate emission factor was estimated. T he distillate oil emission rates were calculated from AP-42, Chapter 1.3 (Fuel Oil Combustion), conservatively assuming a sulfur content of 0 .5% (Source: Latin Am erica and the Caribbean Sulphur Levels in Diesel Fuel, UNEP). AM EC created an area source representative of the island of Tortola. Tortola is the closest of the BVIs to St. John. T he area source represents the largest city on Tortola, Road Town. I t is represented as a 2.5 km 2 

### square area source, covering the majority of the land area of Road Town. Group 8 – Simulated BVI Sources The modeled area source represents general land clearing via open burning. T he emission factors used were taken from AP-42 Cha pter 11.9, Table 11.9- 1 for overburden. Section 13.2.3, “Heavy Construction,” advises using this factor for general land clearing. T he area modeled is 100m x 100m and the location is based on sensible and possible locations of future land clearing. Group 9 – St. John Paved and Unpaved Road Fugitive Sources This group was modeled with an 80% reduction in the emissio n rates from the March 2011 from paved and unpaved roads A single area source was modeled to represent fugitive dust emissions from roadways on St. John. T he emission rates were from the St. John – Emissions Calculations spreadsheet. Paved roads are responsible for 32.7 tons per year (TPY) of particulate matter emissions on St. Johns, while unpaved roads produce 99.4 TPY . T he area modeled is a 5 kilometer by 10.4 kilometer (km) rectangular region, representing an area equal to the 52 km 2 

### land area of St. John. Group 10 – Aggregate St. John Burning A single area source was modeled to represent all sources of fires on St. John, including open burning, forest fires, and structure fires. The emission rates were from the spreadsheet St. JohnAir Quality Modeling in Support of the Regional Haze SIP for the Virgin Islands: June 2012

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### – Emissions Calculations.xls. The a rea is conservatively modeled as 8.6 km by 3 .4km rectangle (about 29.4 km 2

### ) that is contained mostly within the land mass of St. John. Group 11 – St. John Residential Boilers The modeled area source represents emissions from residential boiler usage on St. John. T he emission rates were from the spreadsheet St. John – Emissions Calculations.xls. T he area is conservatively modeled as 3km by 3km square region, located at Cruz Bay, St. John. Group 12 – St. John Miscellaneous Industrial Processes/Construction The modeled area source represents emissions from other industrial sources on St. John. There are two sources represented by Group 12. T he Majestic Concrete facility emits 0.32 Tons per Year of particulate matter, and residential construction emits 10.7 Tons per Year. The emission rates were from the spreadsheet St. John – Emissions Calculations.xls. T he area is conservatively modeled as 3km by 3km square region, located at Cruz Bay, St. John. Group 13 – St. John Motor Vehicle Emission Sources The model ed area source represents motor vehicle emissions on St. John. T he emission rates were provided in an e- mail from the TOPO . The area modeled is a 5 km x 10.4 km rectangular region, representing an area equal to the 52 km 2 

### land area of St. John, the same as in Group 9 for paved/unpaved roads. Group 14 – St. Thomas - WAPA Sources This group is new for the March 2012 visibility modeling effort and consists of 10 combustion and boiler sources at the WAPA facilities on St. Thomas. Data from the AEG Bovoni Power inventory report were used to develop the input source parameters and emission rates for the modeling. The single source that was in Group 5 in the March 2011 modeling was moved to this group and the emission rates updated. E missions based on the Virgin Islands Water and Power Authority (VIWAPA) – Unit 23, at Krum Bay were modeled . I t is a 39 MWturbine that burns No . 2 distillate fuel oil. T he stack parameters were based on an engineering estimate for a similarly sized turbine. For this modeling effort, two boilers at WAPA, model IDs W PSX10 and WPSX11, were modeled as BART-eligible sources. Per data provided in a spreadsheet on February 23, 2012 and aAir Quality Modeling in Support of the Regional Haze SIP for the Virgin Islands: June 2012

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### follow- up email on March 6, the 3-year average actual emissions were used for the St. Croix BART-eligible WAPA sources. The other four St. Croix WAPA sources were not BART-eligible and emission rates from the AEG Anguilla report were used. Group 15 – St. Thomas - Other Sources This group is new for the March 2012 visibility mode ling effort and consists of 1 3 point sources and one area source on St. Thomas. Data from the AEG Bovoni Power inventory report were used to develop the input source parameters and emission rates for the modeling. Sources in this group included several resorts, the St. Thomas Hospital, and asphalt facility, and operations at a quarry. One of the quarry locations was modeled as a point source (crushing and handling) and another was modeled as an area source (blasting/drilling operations). Group 17 – St. J ohn Non- road A spreadsheet with non -road sources on St. john was received on May 16, 2012 and included in the full model runs. This source group consisted of non -road gasoline and diesel vehicles (e.g., light commercial and fa rm), equipment (e.g. lawn and garden), and other (e.g., compressed natural gas) sources. The area was modeled as a 5 km x 10.4 km rectangular region, representing an area equal to the 52 km 2 

### land area of St. John, the same as in Group 9 for paved/unpaved roads. 

### 2.1 **EMISSION S**  **REDUCTIONS** As noted above, CALPUFF and CALPOST were rerun for all four years using the same emissions as shown in Table 2, except with the following emissions reductions: 1) Hovensa Consent Decree and 2) Reductions to the marine vessels (fe rries, cargo ships, and cru ise ships ) . The reductions from the consent decree were 3,460 tons/year for SO 2 

### , 4,744 tons/year for NOX

### , and 17 tons/year for particulates. T he total reductions were applied to a subset of the sources identified in Table 2 as follows: 10% to B1155 (model ID 3), 10% to B33012 (model ID 4), 10% to B1151_4 (model ID 80), 10% to B3303_4 (model ID 81), and 60% to the aggregate source (model ID 7). T he reason for applying the consent decree reductions to selected sources was to minimize the amount of recalculations that would be required. Another reason for applying the reductions in this manner is that the Hove nsa sources are on St. Croix, approximately 70 kilometers from the modeled receptor network.Air Quality Modeling in Support of the Regional Haze SIP for the Virgin Islands: June 2012

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### In addition to the Hovensa consent decree reductions, emissions from m arine sources – ferries, cargo ships, and cruise ships - were reduced by 85% for PM and SO 2 

### , and 80% for NOX

### . The following table shows the reduced emissions used in the modeling. **Location and Model ID**  **SO2 (g/s)**  **NOX (g/s)**  **PMF (g/s)**  **EC (g/s)**  Hovensa B1155 13.50 18.62 2.86 2.86E-02 Hovensa B33012 9.08 11.32 2.29 2.29E-02 Hovensa B1151_4 8.85 12.00 2.26 2.26E-02 Hovensa B3303_4 26.88 18.59 4.47 4.47E-02 Hovensa HOVENS (aggregated source) 5.00 16.03 25.67 2.57E-01 St. John FERRY 3.675E-01 1.70 3.11E-02 3 .11E-04 St. John CRUISE 3.63E-02 1.25E-01 5.65E-03 5.65E-05 St. John CARGO 2.12E-03 5.52E-03 2.59E-04 2.59E-06Air Quality Modeling in Support of the Regional Haze SIP for the Virgin Islands: June 2012

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### Table **2 . Sources, Source Groups, and Modeled Emission Rates**  **Group #**  **Source**

**Group Model ID**  **Type Model**  **ID #**  **Location Description**  **SO 2**  **(g/s) NOx** 

**(g/s) PMF** 

**(g/s) EC** *

**(g/s) Comment** 

1 St. Croix -

Hovensa **BART****** **eligible** Sources B1155 Point 3 St. Croix Nos. 3 and 5 Boilers 23.44 32.43 2.91 2.91E-02

B33012 Point 4 St. Croix Nos. 6 and 7 Boilers 19.03 25.04 2.34 2.34E-02 B1151_4 Point 80 St. Croix Nos. 1 and 4 Boilers 18.77 25.72 2.31 2.31E-02 B3303_4 Point 81 St. Croix Nos. 8 and 9 Boilers 36.83 32.21 4.52 4.52E-02 G1101E Point 82 St. Croix GT#1 Turbine 3.90 23.18 3.51E-01 3.51E-03 G1101F Point 83 St. Croix GT#2 Turbine 3.90 23.18 3.51E-01 3.51E-03 G1101G Point 84 St. Croix GT#3 Turbine 3.90 23.18 3.51E-01 3.51E-03 G3404 Point 85 St. Croix GT#4 Turbine 4.63 23.29 3.71E-01 3.71E-03 G3405 Point 86 St. Croix GT#5 Turbine 4.63 22.05 3.71E-01 3.71E-03 G3406 Point 87 St. Croix GT#6 Turbine 4.63 22.05 3.71E-01 3.71E-03 G3407 Point 88 St. Croix GT#7 Turbine 4.63 22.05 3.71E-01 3.71E-03 G3408 Point 6 St. Croix GT#8 (Gas Turbine) 4.82 28.82 4.4E-01 4.4E-03 G3409 Point 89 St. Croix GT#9 Turbine 1.50 4.32 4.03E-01 4.03E-03 Various Point 100 -

137 St. Croix 38 Heaters See Table 3 C200A, B, C Point 138 -

140 St. Croix Reciprocating Gas Compressors 0.0 9.52E-01 5.75E-03 5.75E-05 C4601A, B, C Point 141

–

143 St. Croix Reciprocating Gas Compressors 0.0 10.90 2.59E-02 2.59E-04 Various Point 144

–

151 St. Croix Flares 2.70 4.26 0.0 0.0 HovensanonBART HOVENS Point 7 St. Croix St. Croix - Hovensa Aggregated Sources 64.72 97.91 25.96 0.2596Air Quality Modeling in Support of the Regional Haze SIP for the Virgin Islands: June 2012

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**Group Model ID**  **Type Model**  **ID #**  **Location Description**  **SO 2**  **(g/s) NOx** 

**(g/s) PMF** 

**(g/s) EC** *

**(g/s) Comment** 

2 Actual St. John Point Sources CANEEL Point 8 St. John Caneel Bay Resort

– Backup Generators 0.015 7.26E-03 8.64E-04 8.64E-06 GALLOW Point 9 St. John Gallows Point Resort

– Dryers and Backup Generator 1.15 E-05 5.51E-04 2.44E-06 1.15E-07 GRANDE Point 10 St. John Grande Bay Resort

– Backup Generator 4.66E-03 2.39E-03 2.61E-04 2.61E-06 MYRAH Point 11 St. John Myrah Keating Smith Health Center - Backup Gen & WH 5.92E-04 7.70E-04 3.47E-05 3.47E-07 WPSJ_U7 Point 12 St. John VIWAPA St. John - Generator 0.630 10.21 0.1764 1.764E-03 VGGENE Point 37 St. John Virgin Grand Generator 0.540 3.510 0.680 6.80E-03 VGINCI Point 38 St. John Virgin Grand Incinerator 0.050 0.010 0.130 1.30E-03

3 Aggregate St. John Marine Sources FERRY Point 13 St. John All Ferries Servicing St. John

– at Cruz Bay Docks 2.45 8.5 2.07E-01 2.07E-03 CRUISE Point 14 St. John All Cruise Ships Servicing St. John - at Cruz Bay Docks 2.42E-01 6.27E-01 3.77E-02 3.77E-04 CARGO Point 15 St. John All Cargo Ships Servicing St. John - at Cruz Bay Docks 1.41E-02 2.76E-02 1.73E-03 1.73E-05 4 Sample Puerto Rico Sources PR

POWE Point 16 Puerto Rico Puerto Rico AES Power Plant 13.03 59.2 17.92 1.79E-01
5 Actual St.

Thomas Sources STPOWER Point 17 St. Thomas St. Thomas Power Plant Removed

– now part of Group 14 (WPST_23)

6 Other St. Croix Sources CROIX Point 18 St. Croix St. Croix Misc. Aggregated Sources 5.21 37.62 2.43 2.43E-02 VBOILER Point 19 St. Croix St. Croix Renaissance Gr p Boiler 110 .00 68 .00 9.80 9.80E-02 St. Croix VIWAPA **BART** WP SX10 Point 20 St. Croix VIWAPA - Boiler 0.6329 0.06329 7.77E-01 7.77E-03 Reported Emissions (1) WP SX11 Point 21 St. Croix VIWAPA - Boiler 8.716 8.832 1.056 1.056E-02 St. Croix VIWAPA nonBAR**T** WP SX16 Point 22 St. Croix VIWAPA - Combustion Turbine 8.543 15.93 1.525 1.525E-02

WP SX17 Point 23 St. Croix VIWAPA - Combustion Turbine 8.467 13.14 1.512 1.512E-02 WP SX19 Point 24 St. Croix VIWAPA - Combustion Turbine 8.001 12.98 2.268 2.268E-02 WP SX20 Point 25 St. Croix VIWAPA - Combustion Turbine 8.089 12.98 2.268 2.268E-02Air Quality Modeling in Support of the Regional Haze SIP for the Virgin Islands: June 2012

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Project No.: 6480110234 Page 19 **AMEC Group**  **# Source** 

**Group Model ID**  **Type Model**  **ID #**  **Location Description**  **SO 2**  **(g/s) NOx** 

**(g/s) PMF** 

**(g/s) EC** *

**(g/s) Comment**  7 Aggregate BVI Sources TORTAR Area 1 Tortola Tortola - BVI Total Combustion of Oil as Area Source (2,500,000 sq. meters) (2) 15.65 4.4 7.28E-01 7.28E-03 8 Simulated BVI Sources TORTBU Area 2 Tortola Tortola - Open Burning (10,000 sq. meters) (2) -- 0.416 1.77 1.77E-02 9 St. John

Roads SJROAD Area 3 St. John St. John - Paved and Unpaved Road Fugitive Emissions (52,000,000 sq. meters) (2) -- -- 0.7599 7.599E-03 10 Aggregate St. John Burning SJBURN Area 4 St. John St. John - All Open Burning, Forest Fires Etc. (29,240,000 sq. meters) (2) 8.36E-04 1.39E-04 2.44E-02 2.44E-04 11 St. Johns

Boilers SJRES Area 5 St. John St. John - Residential Boilers (9,000,000 sq. meters) (2) 4.73E-04 1.06E-01 3.94E-04 3.94E-06 12 St. John Misc.

Industrial SJMISC Area 6 St. John St. John - Misc. Industrial (Concrete, Construction) (9,000,000 sq. meters) (2) -- -- 0.31767 3.18E-03 13 St. John

Vehicle SJVEH Area 7 St. John St. John - On Road Motor Vehicle Emissions (52,000,000 sq. meters) (2) 4.63E-02 7.20E-01 0.02112 2.11E-04

14 St. Thomas

WAPA WP ST_23 Point 26 St. Thomas Combustion Turbine 8.966 12.01 3.78 3.78E-02

WP ST_22 Point 27 St. Thomas Combustion Turbine 6.564 9.702 2.848 2.848E-02 WP ST_18 Point 28 St. Thomas Combustion Turbine 8.656 12.98 6.30E-01 6.30E-03 WP ST_15 Point 29 St. Thomas Combustion Turbine 8.417 14.49 6.30E-01 6.30E-03 St. Thomas WAPA **BART****** **eligible** WP ST_14 Point 30 St. Thomas Combustion Turbine 0.0 0.0 0.0 0.0 Reported Emissions (1) WP ST_13 Point 31 St. Thomas Boiler 12.42 8.50 5.37E-01 5.37E-03 WP ST_12 Point 32 St. Thomas Combustion Turbine 0.3452 2.685 3.84E-02 3.84E-04 WP ST_11 Point 33 St. Thomas Boiler 7.575 6.147 8.06E-01 8.06E-03 St. Thomas WAPA WP ST_10 Point 34 St. Thomas -- -- -- -- --

WP ST_09 Point 35 St. Thomas -- -- -- -- -- 15 St. Thomas Other Source STHOSP Point 36 St. Thomas St. Thomas Hospital 0.1100 9.00E-02 1.00E-02 1.00E-04

STOUFF Point 39 St. Thomas Stouffers Hotel 3.640 3.380 0.7400 0.740E-02 FRGENE Point 40 St. Thomas Frenchman’s Reef Generator 0.3200 4.790 0.3400 0.340E-02 FRDIST Point 41 St. Thomas Frenchman’s Reef Distillation 6.020 4.950 0.3600 0.360E-02Air Quality Modeling in Support of the Regional Haze SIP for the Virgin Islands: June 2012

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Project No.: 6480110234 Page 20 **AMEC Group**  **# Source** 

**Group Model ID**  **Type Model**  **ID #**  **Location Description**  **SO 2**  **(g/s) NOx** 

**(g/s) PMF** 

**(g/s) EC** *

**(g/s) Comment** 

15 St. Thomas Other Sources ISLRDS Point 42 St. Thomas Islands Road Asphalt 0.4600 2.00E-02 0.1300 0.130E-02

QUARRY_ 1 Point 43 St. Thomas Quarry - Crushing/Handling -- -- 8.999E-02 8.999E-04 QUARRY_ 2 Area 8 St. Thomas Quarry

– Blasting/Drilling (24,277 sq. meters (2) -- -- 0.1583 0.1583 -02 CONCRT Point 44 St. Thomas Concrete Block Plant -- -- 2.664E-03 2.664E-05 WSB_001 Point 45 St. Thomas Wyndham Sugar Bay Generator #1 (1,370 kW) 5.466E-02 2.276 4.219E-02 4.219E-04 WSB_002 Point 46 St. Thomas Wyndham Sugar Bay Generator #2 (1,370 kW) 5.466E-02 2.276 4.219E-02 4.219E-04 WSB_003 Point 47 St. Thomas Wyndham Sugar Bay Generator #3 (2,000 kW) 5.466E-02 2.276 4.219E-02 4.219E-04 RITZ_E1 Point 48 St. Thomas Ritz Carlton Engine #1 (1,275 kW) 0.4833 2.278 1.438E-02 1.438E-04 RITZ_E2 Point 49 St. Thomas Ritz Carlton Engine #2 (1,275 kW) 0.4833 2.278 1.438E-02 1.438E-04 RITZ_E3 Point 50 St. Thomas Ritz Carlton Engine #3 (1,275 kW) 0.4833 2.278 1.438E-02 1.438E-04 17 St. John

NonRoad SJNONR Area 9 St. john Nonroad Emissions (52,000,000 sq. meters) (2) 0.5146 0.0595 5.54E-02 5.54E-04 Email of 5/16/2012 g/s – grams/second (1) St. Croix VIWAPA and St. Thomas VIWAPA BART-el igible sources were m odeled with Reported Emissions (2) Emission rate in the table is expressed in grams/second; area over which the emission rate is modeled is shown in the description; to obtain the emission rate input to the model (expressed in g/s/m 2 ), divide the emission rate in the table by the area * Elemental Carbon is assumed to be 1% of PM emissionsAir Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

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Project No.: 6480110234 Page 21 **AMEC** 

### Table **3 . Hovensa BART** **- eligible Heater Inventory**  **HO VE**  **NS A, L.L.C. - St. Croi**  **x, V I**  greyed out c ellss hows units that were shut down in early 2011 Blue Font s hows what was added or revis ed by HOVENSA **Source I.D.**  **Unit De scription**  **Hea t Input**  **Fue l T**  **yp e**  **Da te**  **mmB TU/** **hr (Note 1)**  **Constructe d**  **SO 2**  **NO x**  **PM 10**  (tons/yr) (tons /yr) (tons /yr) H- 101 Heater 133.6 RFG, RO 1966 155.5 232.5 19.3 H- 104 Heater 99.4 RFG, RO 1966 115.5 172.8 17.2 H-200 Heater 37.2 RFG 1966 8.1 16.0 1.2 H-201 Heater 37.4 RFG 1966 8.2 16.1 1.2 H-202 Heater 121.6 RFG 1966 26.6 146.5 4.0 H-401A Ch arge Heater 150.7 RFG, RO 1968 197.6 279.1 24.4 H-401B Ch arge Heater 150.7 RFG, RO 1968 197.6 279.1 24.4 H-401C Ch arge Heater 150.7 RFG, RO 1968 197.6 279.1 24.4 H- 1401A Ch arge Heater 208.6 RFG, RO 1969 163.1 388.7 21.1 H- 1401B Ch arge Heater 188.2 RFG, RO 1969 155.4 370.2 20.1 H- 1500 Reactor Charge Heater 50.8 RFG 1968 13.0 25.5 2.0 H- 1501 Fractionator Reboiler Heater 53.5 RFG 1968 13.7 26.8 2.0 H- 160 Ch arge Heater 112.5 RFG 1968 29.6 163.0 4.4 H-600 Unifining Charge Heater 48.1 RFG 1968 11.5 22.5 1.7 H-601 Stripper Reboiler Heater 27.8 RFG 1969 7.8 15.2 1.2 H-602 Platforming Charge Heater 261.9 RFG 1969 62.6 344.4 9.4 H-603 Platform ing No.1 Interheater 72 RFG 1969 17.2 33.7 2.6 H-604 Platform ing No.2 Interheater 29.1 RFG 1969 8.1 15.9 1.2 H-605 Platform ing No.3 Interheater 12 RFG 1969 3.4 6.6 0.5 H-606 De pentaniz er Reboiler Heater 49.2 RFG 1969 11.8 23.1 1.8 H-800A Reactor Charge Heater 18.9 RFG 1969 9.4 18.4 1.4 H-800B Reactor Charge Heater 18.9 RFG 1969 9.4 18.4 1.4 H-801 Stripper Heater 79 RFG 1969 22.0 121.1 3.3 H-2101 Ch arge Heater 190.6 RFG, RO 1972 116.4 283.2 15.1 H-2102 Ch arge Heater 184.6 RFG, RO 1972 112.7 274.1 14.6 H-2185 Vis breaking Heater 250 RFG 1983 19.4 219.0 110.0 H-2201A Reactor Charge Heater 46.8 RFG 1972 13.4 26.3 2.0 H-2201B Reactor Charge Heater 46.8 RFG 1972 13.4 26.3 2.0 H-2202 Stripper Reboiler Heater 91 RFG 1972 26.1 143.7 3.9 H-2400 Ch arge Heater 30.3 RFG Apr-73 7.2 14.2 1.1 H-2401 Re boiler Heater 100.8 RFG Apr-73 24.1 132.5 3.6 H-2501 Re boiler Heater 113.6 RFG 1972 44.5 244.5 6.7 H-4502 Benz ene Colum n Reboiler Heater 77.5 RFG Apr-73 32.5 178.9 4.9 H-4503 Toulene Colum n Reboiler Heater 90.3 RFG Apr-73 30.8 169.6 4.6 H-4504 Xylene Colum n Reboiler Heater 70.4 RFG Apr-73 27.6 151.9 4.1 H-4505 Raffinate Splitter Reboiler Heater 43.8 RFG Apr-73 23.9 131.3 3.6 H-3101A Crude Charge Heater 309.8 RFG, RO 1971 356.7 507.1 48.1 H-3101B Crude Charge Heater 309.8 RFG, RO 1971 356.7 507.1 48.1 H-4101A Crude Charge Heater 309.2 RFG, RO Apr-73 356.7 507.1 48.1 H-4101B Crude Charge Heater 309.2 RFG, RO Apr-73 356.7 507.1 48.1 H-4401 Ch arge Heater 127.3 RFG Apr-73 29.4 161.5 4.4 H-4402 Fired Reboiler Heater 77.9 RFG Apr-73 28.0 153.8 4.2 H-4451 Ch arge Heater 351.6 RFG Apr-73 83.4 458.7 12.5 H-4452 Intermediate Heater 251.2 RFG Apr-73 54.3 298.6 8.1 H-4453 Intermediate Heater 115.6 RFG Apr-73 54.3 298.6 8.1 H-4454 Intermediate Heater 63.3 RFG Apr-73 16.9 33.1 2.5 H-4455 Fired Reboiler Heater 124 RFG Apr-73 30.3 166.6 4.5 H-4201 Prestripper Heater 227.6 RFG, RO Apr-73 367.7 448.1 44.9 H-4202 Vac uum Heater 220.4 RFG, RO Apr-73 355.7 433.6 43.4 H-5401 Ch arge Heater 114.1 RFG Apr-73 29.4 161.5 4.4 H-5402 Fired Reboiler Heater 78.8 RFG Apr-73 28.0 153.8 4.2 H-5451 Ch arge Heater 248 RFG Apr-73 83.4 458.7 12.5 H-5452 Intermediate Heater 201.7 RFG Apr-73 54.3 298.6 8.1 H-5453 Intermediate Heater 114.4 RFG Apr-73 54.3 298.6 8.1 H-5454 Intermediate Heater 64.7 RFG Apr-73 16.9 33.1 2.5 H-5455 Fired Reboiler Heater 129.2 RFG Apr-73 30.3 166.6 4.5 H-4601A Reactor Charge Heater 52.1 RFG Apr-73 13.4 26.3 2.0 H-4601B Reactor Charge Heater 52.1 RFG Apr-73 13.4 26.3 2.0 H-4602 Stripper Reboiler Heater 101.3 RFG Apr-73 26.1 143.7 3.9 H-4301A Reactor Charge Heater 47.9 RFG Apr-73 14.6 28.7 2.2 H-4301B Reactor Charge Heater 51.1 RFG Apr-73 14.6 28.7 2.2 H-4302 Stripper Reboiler Heater 135.2 RFG Apr-73 26.7 147.1 4.0 H-5301A Reactor Charge Heater 61.2 RFG Apr-73 14.6 28.7 2.2 H-5301B Reactor Charge Heater 61.2 RFG Apr-73 14.6 28.7 2.2 H-5302 Stripper Reboiler Heater 112 RFG Apr-73 26.7 147.1 4.0 H-4901 Ch arge Heater ?? ?? 2008 Hydrogen Plant Heater H- 7801 Proc es s Air Heater ?? ?? 1993 H- 7802 Co nverter Heater ?? ?? 1993 R-7801 Startup Heater ?? ?? 1993 H- 1061 and (T-1061) Sulfur Recovery Units , Tail gas Treatm ent ?? ?? 2002 H-4761 and (T-4761) Tail GasTreatm ent 10 RFG pre 1976 2 4.0 1.0 H-4745 Tail GasI nc inerator 55 RFG pre 1976 900 28.0 3.0 H-3413 Duct Burner ?? ?? 2009 H- 1032 Tail GasI nc inerator 7.2 RFG pre 1976 1.6 3.1 0.2 H- 1042 Tail GasI nc inerator 15.2 RFG pre 1976 3.3 6.5 0.5 **Regi onal** **H aze - BART Source I** **nv entory**  **- H EATERS** 

Un it was never constructed **Pote ntial T**  **o Em it (PT**  **E), tons pe r y**  **ea r** Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

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Project No.: 6480110234 Page 22 **AMEC** 

### 3. **RECEPTOR NETWORK** T he National Park Service (NPS) has developed a database of modeling receptors for all Class I areas in the United States and the Virgin Islands. For the Virgin Island Class I area , 74 receptors are defined with an additional receptor on H assel Island. Since this receptor network does not allow for examination of s ingle source contributions, an additional receptor located at the IM PROVE monitor site was modeled, allowing calculations of source contributions at the IM PROVE site . T he NPS receptor set was downloaded from the NPS website (http://www.nature.nps.gov/air/maps/receptors/index.cfm) and converted to the Lambert Conformal Conic (NAD83, km) for the modeling. Figure 2 shows the receptor network.

**Figure 2**  **. Location of Class I Receptors for VI National Park**  

### 4. **MODEL RESULTS** The modeling results at the IM PROVE receptor with all sources modeled for each year 2007 through 2010 are shown in Table 2 . T he average annual visibility parameters for all days in the year, the 8th 

### high values (98th 

### percentile), and the average of the best 20% days and worst 20% days based on the percent change of the total beta extinction over the background beta extinction are presented .

2020 2022 2024 2026 2028 2030 2032 2034 2036 2038

293 298 303 308 313 318**U T** **M N** **o r** **t h** **i n** **g (** **k m** **)**

**UTM Easting (km**  ReceptorsAir Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

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### For the model results with BART-eligible sources, the average of the best 20% days is omitted since not all days during the year resulted in visibility impacts (Tables 10 and later). In these tables, the number of days with non-zero visibility impacts is noted in parenthesis after the year for the annual average and the worst 20% days. The following table briefly describes the tables of results that follow. **Tables Description**  4-6 All sources for 2007-2010 with emissions for BART-eligible sources modeled 7-9 All sources for 2007-2010 with BART-eligible sources and emission reductions:

Hovensa Consent Decree and marine vessel reductions 10- 11 Hovensa BART-eligible sources, 2007-2010 (Group 1) 12- 13 Hovensa BART-eligible + nonBART sources, 2007-2010 14- 15 St. Thomas WAPA BART-eligible sources, 2007-2010 (Group 14b) 16- 17 St. Thomas WAPA BART-eligible + nonBART sources, 2007-2010 (Group 14d) 18 - 19 St. Thomas WAPA BART-eligible + nonBART + other St. Thomas sources,

2007-2010 (Group 14e) 20-21 St. Croix WAPA BART-eligible sources, 2007-2010 (Group 6b) 22-23 St. Croix WAPA BART-eligible + nonBART sources, 2007-2010 (Group 6d) 24-25 St. John point sources, 2007-2010 (Group 2) 26-27 St. John marine vessel sources (ferry, cargo, cruise), 2007-2010 (Group 3 )

– no

emissions reductions 28 -29 St. John marine vessel sources (ferry, cargo, cruise), 2007-2010 (Group 3alt)

–

with emissions reductions as described above 30-31 Puerto Rico surrogate power plant, 2009 only (Group 4) 32-33 British Virgin Islands oil combustion, 2009 only (Group 7) 34-35 British Virgin Islands burning, 2009 only (Group 8) 36-37 St. John fugitive road dust, 2007-2010 (Group 9) 38 -39 St. John burning, 2007-2010 (Group 10) 40-41 St. John boilers, 2007-2010 (Group 11) 42-43 St. John misc. industrial/construction, 2007-2010 (Group 12);

also includes results for an alternate size area source for 2009 only 44-45 St. John onroad (motor vehicles), 2007-2010 (Group 13) 46-47 St. John nonroad, 2007-2010 (Group 17) 

### Following Table 6 are plots of the modeled daily visibility impacts from all sources (without reductions) at the IMPROVE site (Figures 3, 5, 7, and 9) and Hassel Island site (Figures 4, 6, 8,Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

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### and 10). The letter ‘B’ above a column corresponds to “Best 20%” day and the letter ‘W’ corresponds to a “Worst 20%” day. Note that the scale for the y-axis (beta extinction) varies from figure-to-figure. Also note that for some days, the bar extends above the top of the y-axis. On those days, the beta extinction is denoted in parentheses next to the bar.Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

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### Table **4 .**  **IMPROVE Site Receptor**  **- Model Results for All Sources** **, No Reductions 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 8.17 15.66 23.84 52.16 0.79 0.14 -- 0.66 -- 6.58 -- 8.43 4.49 3.94 2007 98th percentile 27.09 15.63 42.77 173.70 7.38 0.22 -- 1.77 -- 17.72 -- 14.53 4.46 10.07 2007 Best 20% Days 2.68 15.64 18.33 17.16 0.08 0.00 -- 0.24 -- 2.36 -- 6.05 4.47 1.58 2007 Worst 20% Days 17.56 15.67 33.25 112.23 3.11 0.63 -- 1.26 -- 12.57 -- 11.86 4.49 7.38 2008 Annual Average 5.50 15.66 21.16 35.06 0.28 0.05 -- 0.47 -- 4.69 -- 7.40 4.49 2.91 2008 98th percentile 15.29 15.85 31.15 96.52 1.55 0.98 -- 1.16 -- 11.60 -- 11.36 4.61 6.76 2008 Best 20% Days 2.80 15.62 18.42 17.95 0.05 0.00 -- 0.25 -- 2.50 -- 6.11 4.46 1.65 2008 Worst 20% Days 10.74 15.71 26.46 68.39 1.06 0.21 -- 0.86 -- 8.61 -- 9.65 4.52 5.14 2009 Annual Average 5.96 15.66 21.63 38.04 0.41 0.07 -- 0.50 -- 4.98 -- 7.56 4.49 3.07 2009 98th percentile 23.43 15.85 39.32 148.07 6.08 0.58 -- 1.53 -- 15.25 -- 13.69 4.61 9.09 2009 Best 20% Days 2.89 15.62 18.51 18.49 0.04 0.00 -- 0.26 -- 2.59 -- 6.15 4.46 1.70 2009 Worst 20% Days 12.55 15.70 28.25 79.96 1.78 0.33 -- 0.95 -- 9.49 -- 10.19 4.51 5.68 2010 Annual Average 4.71 15.66 20.37 30.03 0.51 0.11 -- 0.37 -- 3.72 -- 7.04 4.49 2.55 2010 98th percentile 14.95 15.85 30.84 94.58 3.92 5.06 -- 0.54 -- 5.44 -- 11.26 4.61 6.66 2010 Best 20% Days 2.95 15.58 18.53 18.95 0.01 0.00 -- 0.27 -- 2.67 -- 6.17 4.43 1.73 2010 Worst 20% Days 8.84 15.70 24.55 56.39 2.33 0.51 -- 0.55 -- 5.46 -- 8.85 4.51 4.35Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

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### Table **5 .**  **Hassel Island NPS Receptor -**  **Model Results for All Sources , No Reductions**  **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 2.91 15.66 18.58 18.59 1.11 0.16 -- 0.15 -- 1.49 -- 6.10 4.49 1.62 2007 98th percentile 12.60 15.81 28.48 80.10 8.86 0.61 -- 0.29 -- 2.85 -- 10.46 4.58 5.88 2007 Best 20% Days 0.75 15.65 16.40 4.79 0.20 0.01 -- 0.05 -- 0.49 -- 4.94 4.48 0.47 2007 Worst 20% Days 6.91 15.67 22.61 44.23 3.82 0.64 -- 0.22 -- 2.23 -- 8.03 4.49 3.54 2008 Annual Average 2.04 15.66 17.71 13.06 0.56 0.09 -- 0.13 -- 1.26 -- 5.69 4.49 1.20 2008 98th percentile 5.68 15.76 21.47 36.27 4.26 0.12 -- 0.12 -- 1.19 -- 7.64 4.55 3.09 2008 Best 20% Days 0.70 15.65 16.35 4.48 0.21 0.02 -- 0.04 -- 0.43 -- 4.92 4.48 0.44 2008 Worst 20% Days 4.11 15.72 19.84 26.18 1.38 0.32 -- 0.22 -- 2.19 -- 6.82 4.52 2.29 2009 Annual Average 2.16 15.66 17.83 13.81 0.63 0.07 -- 0.13 -- 1.32 -- 5.73 4.49 1.25 2009 98th percentile 8.05 15.47 23.56 52.36 5.92 1.24 -- 0.08 -- 0.81 -- 8.57 4.36 4.21 2009 Best 20% Days 0.44 15.67 16.10 2.79 0.08 0.01 -- 0.03 -- 0.32 -- 4.76 4.49 0.27 2009 Worst 20% Days 4.83 15.70 20.54 30.85 2.03 0.27 -- 0.23 -- 2.30 -- 7.13 4.51 2.62 2010 Annual Average 5.47 15.66 21.15 35.02 1.48 0.27 -- 0.34 -- 3.38 -- 7.37 4.49 2.89 2010 98th percentile 16.22 15.63 31.92 104.23 9.91 0.60 -- 0.52 -- 5.19 -- 11.61 4.46 7.14 2010 Best 20% Days 1.83 15.70 17.53 11.66 0.54 0.06 -- 0.11 -- 1.12 -- 5.60 4.51 1.09 2010 Worst 20% Days 10.48 15.68 26.20 67.00 4.38 0.97 -- 0.47 -- 4.67 -- 9.50 4.50 5.00Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

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### Table **6 .**  **NPS Receptors on St. John**
**– Model Results for All Sources** **, No Reductions St. John NPS**  **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 19.67 15.66 35.34 125.58 0.86 0.15 -- 1.70 -- 16.96 -- 12.50 4.49 8.01 2007 98th percentile 34.86 15.63 50.55 223.47 8.05 2.74 -- 2.19 -- 21.88 -- 16.20 4.46 11.74 2007 Best 20% Days 13.09 15.64 28.72 83.68 0.12 0.01 -- 1.18 -- 11.78 -- 10.51 4.47 6.05 2007 Worst 20% Days 28.15 15.69 43.86 179.48 3.05 0.65 -- 2.22 -- 22.22 -- 14.71 4.50 10.20 2008 Annual Average 20.44 15.66 36.10 130.47 0.34 0.06 -- 1.82 -- 18.22 -- 12.73 4.49 8.24 2008 98th percentile 33.62 15.60 49.22 215.56 0.07 0.00 -- 3.05 -- 30.50 -- 15.94 4.44 11.49 2008 Best 20% Days 14.48 15.64 30.11 92.58 0.19 0.02 -- 1.30 -- 12.97 -- 11.01 4.47 6.55 2008 Worst 20% Days 29.51 15.67 45.19 188.37 0.66 0.17 -- 2.61 -- 26.07 -- 15.05 4.49 10.56 2009 Annual Average 18.87 15.66 34.53 120.44 0.46 0.08 -- 1.67 -- 16.66 -- 12.31 4.49 7.82 2009 98th percentile 34.40 15.72 50.13 218.80 0.93 0.06 -- 3.04 -- 30.37 -- 16.12 4.53 11.59 2009 Best 20% Days 13.86 15.61 29.48 88.76 0.10 0.01 -- 1.25 -- 12.50 -- 10.80 4.46 6.34 2009 Worst 20% Days 25.88 15.71 41.60 164.76 1.51 0.28 -- 2.19 -- 21.89 -- 14.18 4.52 9.67 2010 Annual Average 21.92 15.66 37.59 139.86 0.51 0.13 -- 1.93 -- 19.35 -- 13.08 4.49 8.60 2010 98th percentile 40.51 15.76 56.27 257.14 0.08 0.02 -- 3.67 -- 36.74 -- 17.28 4.55 12.73 2010 Best 20% Days 14.50 15.60 30.10 92.99 0.12 0.01 -- 1.31 -- 13.07 -- 11.01 4.45 6.56 2010 Worst 20% Days 32.92 15.73 48.67 209.31 1.46 0.54 -- 2.81 -- 28.11 -- 15.77 4.53 11.24Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 28 **AMEC** 

### Figure **3 . Modeled Beta Extinction** 
**– All Sources, No Reductions** 
**– IM** **P R** **O VE Site Receptor, 2007** Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 29 **AMEC** 

### Figure **4 .**  **Modeled Beta Extinction**
**– All**  **Sources, No Reductions**
**– Hassel Island NPS**  **Receptor, 2007**Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 30 **AMEC** 

### Figure **5 .**  **Modeled Beta Extinction**
**– All Sources, No Reductio** **ns –**  **IMPROVE Site Receptor, 2008**Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 31 **AMEC** 

### Figure **6 .**  **Modeled Beta Extinction**
**– All Sources, No Reductions** 
**– Hassel Island NPS Receptor, 2008** Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands:

Final Modeling for Visibility Reduction

Project No.: 6480110234 

### Figure **7 .**  **Modeled Beta Extinction**
**– All Sources, No Reductio**  Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands:

Page 32 

### ns **– IMPROVE Site Receptor, 2009**  June 2012

**AMEC**Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands:

Final Modeling for Visibility Reduction

Project No.: 6480110234 

### Figure **8 .**  **Modeled Beta Extinction**
**– All Sources, No Reductions**  Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands:

Page 33 

### – **Hassel Island NPS Receptor, 2009**  June 2012

**AMEC**Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands:

Final Modeling for Visibility Reduction

Project No.: 6480110234 

### Figure **9 .**  **Modeled Beta Extinction**
**– All Sources, No Reductio**  Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands:

Page 34 

### ns **– IMPROVE Site Receptor, 2010**  June 2012

**AMEC**Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands:

Final Modeling for Visibility Reduction

Project No.: 6480110234 

### Figure **10 .**  **Modeled Beta Extinction**
**– All Sources, No Reductions**  Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands:

Page 35 

### – **Hassel Island NPS Receptor, 2010** June 2012

**AMEC**Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 36 **AMEC** 

### Table **7 .**  **IMPROVE Site Receptor**  **- M** **odel Results for All Sources, w** **ith Reductions 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 7.99 15.66 23.65 51.00 0.65 0.12 -- 0.66 -- 6.56 -- 8.37 4.49 3.89 2007 98th percentile 25.41 15.63 41.08 162.89 6.86 0.23 -- 1.67 -- 16.66 -- 14.13 4.46 9.67 2007 Best 20% Days 2.68 15.64 18.33 17.16 0.08 0.00 -- 0.24 -- 2.36 -- 6.05 4.47 1.58 2007 Worst 20% Days 16.79 15.67 32.47 107.25 2.48 0.53 -- 1.25 -- 12.53 -- 11.65 4.49 7.16 2008 Annual Average 5.44 15.66 21.10 34.71 0.24 0.05 -- 0.47 -- 4.68 -- 7.38 4.49 2.89 2008 98th percentile 14.92 15.85 30.79 94.21 1.30 0.87 -- 1.16 -- 11.60 -- 11.24 4.61 6.64 2008 Best 20% Days 2.80 15.62 18.42 17.95 0.05 0.00 -- 0.25 -- 2.50 -- 6.11 4.46 1.65 2008 Worst 20% Days 10.46 15.71 26.18 66.63 0.87 0.18 -- 0.86 -- 8.55 -- 9.56 4.52 5.04 2009 Annual Average 5.87 15.66 21.54 37.46 0.34 0.06 -- 0.50 -- 4.97 -- 7.53 4.49 3.04 2009 98th percentile 21.76 15.72 37.52 138.63 5.32 1.38 -- 1.37 -- 13.69 -- 13.22 4.53 8.70 2009 Best 20% Days 2.89 15.62 18.51 18.49 0.04 0.00 -- 0.26 -- 2.59 -- 6.15 4.46 1.70 2009 Worst 20% Days 12.11 15.70 27.81 77.14 1.42 0.28 -- 0.95 -- 9.47 -- 10.06 4.51 5.56 2010 Annual Average 4.59 15.66 20.26 29.30 0.41 0.09 -- 0.37 -- 3.71 -- 6.99 4.49 2.51 2010 98th percentile 13.37 15.85 29.26 84.58 3.10 4.30 -- 0.54 -- 5.43 -- 10.74 4.61 6.13 2010 Best 20% Days 2.95 15.58 18.53 18.94 0.01 0.00 -- 0.27 -- 2.67 -- 6.17 4.43 1.73 2010 Worst 20% Days 8.30 15.70 24.01 52.93 1.87 0.44 -- 0.55 -- 5.45 -- 8.65 4.51 4.14Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 37 **AMEC** 

### Table **8 . Hassel Island NPS Receptor**  **- Model Results for All Sources,**  **w ith Reductions**  **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 2.62 15.66 18.29 16.74 0.88 0.13 -- 0.15 -- 1.46 -- 5.97 4.49 1.48 2007 98th percentile 10.20 15.81 26.05 64.78 6.17 0.95 -- 0.28 -- 2.80 -- 9.58 4.58 4.99 2007 Best 20% Days 0.73 15.64 16.37 4.65 0.18 0.01 -- 0.05 -- 0.48 -- 4.93 4.47 0.45 2007 Worst 20% Days 5.93 15.67 21.62 37.92 2.97 0.53 -- 0.22 -- 2.21 -- 7.62 4.49 3.13 2008 Annual Average 1.91 15.66 17.57 12.19 0.46 0.08 -- 0.12 -- 1.24 -- 5.62 4.49 1.13 2008 98th percentile 4.80 15.81 20.62 30.39 0.70 0.59 -- 0.32 -- 3.19 -- 7.23 4.58 2.65 2008 Best 20% Days 0.68 15.65 16.33 4.34 0.20 0.02 -- 0.04 -- 0.42 -- 4.90 4.48 0.42 2008 Worst 20% Days 3.72 15.71 19.44 23.70 1.05 0.26 -- 0.22 -- 2.19 -- 6.62 4.52 2.11 2009 Annual Average 2.00 15.66 17.67 12.78 0.51 0.06 -- 0.13 -- 1.30 -- 5.65 4.49 1.17 2009 98th percentile 6.72 15.72 22.48 42.96 4.25 0.43 -- 0.19 -- 1.86 -- 8.10 4.53 3.57 2009 Best 20% Days 0.42 15.67 16.09 2.70 0.07 0.01 -- 0.03 -- 0.31 -- 4.75 4.49 0.26 2009 Worst 20% Days 4.34 15.70 20.04 27.68 1.50 0.21 -- 0.24 -- 2.39 -- 6.91 4.51 2.40 2010 Annual Average 4.88 15.66 20.55 31.19 1.07 0.22 -- 0.33 -- 3.26 -- 7.11 4.49 2.62 2010 98th percentile 14.05 15.63 29.74 90.30 7.85 0.51 -- 0.52 -- 5.17 -- 10.90 4.46 6.43 2010 Best 20% Days 1.58 15.70 17.28 10.09 0.41 0.05 -- 0.10 -- 1.03 -- 5.47 4.51 0.95 2010 Worst 20% Days 9.25 15.68 24.96 59.11 3.29 0.80 -- 0.47 -- 4.69 -- 9.05 4.50 4.55Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 38 **AMEC** 

### Table **9 .**  **NPS Receptors on St. John**
**– Model Results for All Sources,**  **with Reductions St. John NPS**  **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 19.50 15.66 35.16 124.47 0.71 0.13 -- 1.70 -- 16.96 -- 12.46 4.49 7.97 2007 98th percentile 33.74 15.81 49.56 213.46 1.52 0.13 -- 2.92 -- 29.17 -- 16.01 4.58 11.42 2007 Best 20% Days 13.08 15.64 28.71 83.62 0.11 0.01 -- 1.18 -- 11.78 -- 10.51 13.08 15.64 2007 Worst 20% Days 27.51 15.70 43.22 175.34 2.43 0.52 -- 2.23 -- 22.33 -- 14.58 4.51 10.07 2008 Annual Average 20.38 15.66 36.05 130.13 0.30 0.05 -- 1.82 -- 18.21 -- 12.72 4.49 8.23 2008 98th percentile 33.62 15.60 49.22 215.56 0.07 0.00 -- 3.05 -- 30.50 -- 15.94 4.44 11.49 2008 Best 20% Days 14.43 15.63 30.06 92.31 0.18 0.02 -- 1.29 -- 12.94 -- 11.00 4.47 6.53 2008 Worst 20% Days 29.42 15.67 45.10 187.81 0.50 0.14 -- 2.62 -- 26.16 -- 15.03 4.49 10.54 2009 Annual Average 18.79 15.66 34.45 119.91 0.38 0.07 -- 1.67 -- 16.67 -- 12.29 4.49 7.80 2009 98th percentile 33.83 15.72 49.63 215.60 10.11 1.07 -- 2.06 -- 20.59 -- 16.02 4.53 11.49 2009 Best 20% Days 13.85 15.61 29.47 88.72 0.11 0.01 -- 1.25 -- 12.49 -- 10.79 4.46 6.34 2009 Worst 20% Days 25.57 15.72 41.29 162.75 1.23 0.24 -- 2.19 -- 21.91 -- 14.12 4.52 9.60 2010 Annual Average 21.82 15.66 37.48 139.19 0.42 0.11 -- 1.94 -- 19.35 -- 13.06 4.49 8.58 2010 98th percentile 40.51 15.76 56.27 257.13 0.08 0.02 -- 3.67 -- 36.74 -- 17.28 4.55 12.73 2010 Best 20% Days 14.48 15.60 30.08 92.85 0.11 0.01 -- 1.31 -- 13.05 -- 11.00 4.45 6.56 2010 Worst 20% Days 32.59 15.73 48.33 207.15 1.17 0.47 -- 2.81 -- 28.14 -- 15.70 4.53 11.17Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 39 **AMEC** 

### Table **10 .**  **IMPROVE Site Receptor**
**– Group 1** 
**– Model Results**  **for Hovensa**  **BART -** **eligible Sources 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 0.45 15.66 16.11 2.87 0.32 0.08 -- 0.00 -- 0.04 -- 4.74 4.49 0.25 2007 98th percentile 4.60 15.63 20.26 29.65 3.93 0.15 -- 0.05 -- 0.48 -- 7.06 4.46 2.60 2007 (73) Worst 20% Days 2.21 15.67 17.89 14.15 1.59 0.40 -- 0.02 -- 0.20 -- 5.73 4.49 1.24 2008 Annual Average 0.12 15.66 15.78 0.77 0.09 0.02 -- 0.00 -- 0.01 -- 4.56 4.49 0.07 2008 98th percentile 1.64 15.75 17.41 10.48 1.43 0.06 -- 0.01 -- 0.14 -- 5.54 4.55 1.00 2008 (68) Worst 20% Days 0.60 14.63 15.23 3.84 0.44 0.09 -- 0.01 -- 0.06 -- 4.57 4.20 0.36 2009 Annual Average 0.23 15.66 15.89 1.47 0.17 0.04 -- 0.00 -- 0.02 -- 4.62 4.49 0.13 2009 98th percentile 3.60 15.85 19.47 22.84 2.86 0.26 -- 0.04 -- 0.44 -- 6.66 4.61 2.06 2009 (68) Worst 20% Days 1.15 14.62 15.78 7.36 0.85 0.19 -- 0.01 -- 0.10 -- 4.87 4.20 0.67 2010 Annual Average 0.35 15.66 16.02 2.27 0.25 0.07 -- 0.00 -- 0.04 -- 4.69 4.49 0.20 2010 98th percentile 3.38 15.63 19.03 21.77 2.74 0.18 -- 0.04 -- 0.42 -- 6.43 4.46 1.97 2010 (73) Worst 20% Days 1.75 15.64 17.40 11.20 1.22 0.34 -- 0.02 -- 0.17 -- 5.48 4.47 1.00Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 40 **AMEC** 

### Table **11 . Hass** **e l Island NPS**  **Receptor**
**– Group 1** 
**– Model R** **esults for Hovensa**  **BART -** **eligible Sources 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 0.52 15.66 16.19 3.35 0.39 0.08 -- 0.01 -- 0.05 -- 4.79 4.49 0.30 2007 98th percentile 5.04 15.58 20.65 32.54 2.88 1.93 -- 0.02 -- 0.21 -- 7.25 4.44 2.82 2007 (73) Worst 20% Days 2.47 15.67 18.16 15.82 1.82 0.40 -- 0.02 -- 0.23 -- 5.90 4.49 1.41 2008 Annual Average 0.19 15.66 15.85 1.19 0.13 0.03 -- 0.00 -- 0.02 -- 4.60 4.49 0.11 2008 98th percentile 2.63 15.81 18.46 16.74 1.99 0.54 -- 0.01 -- 0.10 -- 6.13 4.58 1.55 2008 (73) Worst 20% Days 0.93 15.70 16.63 5.93 0.67 0.16 -- 0.01 -- 0.09 -- 5.07 4.51 0.56 2009 Annual Average 0.27 15.66 15.94 1.76 0.21 0.03 -- 0.00 -- 0.03 -- 4.65 4.49 0.16 2009 98th percentile 3.30 15.72 19.04 21.09 2.68 0.22 -- 0.04 -- 0.37 -- 6.44 4.53 1.91 2009 (73) Worst 20% Days 1.37 15.70 17.08 8.78 1.05 0.17 -- 0.01 -- 0.13 -- 5.31 4.51 0.80 2010 Annual Average 0.63 15.66 16.30 4.05 0.46 0.10 -- 0.01 -- 0.07 -- 4.85 4.49 0.36 2010 98th percentile 5.78 15.85 21.65 36.57 1.83 3.82 -- 0.01 -- 0.11 -- 7.72 4.61 3.12 2010 (73) Worst 20% Days 2.94 15.64 18.60 18.87 2.13 0.49 -- 0.03 -- 0.30 -- 6.14 4.47 1.67Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 41 **AMEC** 

### Table **12 .**  **IMPROVE Site Receptor**
**– Group 1** 
**– Model Results for**  **Hovensa (** **BART +**  **non BART** **) Sources**  **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 0.59 15.66 16.26 3.78 0.41 0.09 -- 0.01 -- 0.08 -- 4.81 4.49 0.32 2007 98th percentile 6.15 15.63 21.82 39.59 4.96 0.18 -- 0.09 -- 0.92 -- 7.80 4.46 3.34 2007 (73) Worst 20% Days 2.93 15.67 18.61 18.75 2.03 0.47 -- 0.04 -- 0.39 -- 6.09 4.49 1.60 2008 Annual Average 0.16 15.66 15.82 1.02 0.11 0.02 -- 0.00 -- 0.02 -- 4.58 4.49 0.10 2008 98th percentile 2.23 15.63 17.87 14.32 1.49 0.11 -- 0.06 -- 0.57 -- 5.80 4.46 1.34 2008 (70) Worst 20% Days 0.80 15.06 15.86 5.10 0.56 0.10 -- 0.01 -- 0.12 -- 4.81 4.33 0.48 2009 Annual Average 0.31 15.66 15.97 1.96 0.22 0.05 -- 0.00 -- 0.04 -- 4.66 4.49 0.17 2009 98th percentile 4.87 15.85 20.74 30.86 3.61 0.31 -- 0.09 -- 0.86 -- 7.30 4.61 2.69 2009 (69) Worst 20% Days 1.53 14.84 16.38 9.81 1.09 0.23 -- 0.02 -- 0.20 -- 5.13 4.26 0.87 2010 Annual Average 0.47 15.66 16.13 3.00 0.31 0.08 -- 0.01 -- 0.07 -- 4.75 4.49 0.26 2010 98th percentile 4.64 15.63 20.30 29.89 3.52 0.21 -- 0.08 -- 0.84 -- 7.08 4.46 2.61 2010 (73) Worst 20% Days 2.32 15.64 17.98 14.88 1.55 0.39 -- 0.03 -- 0.34 -- 5.77 4.47 1.30Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 42 **AMEC** 

### Table **13 .**  **Hassel Island NPS Receptor**
**– Group 1** 
**– Model Results for**  **Hovensa (** **BART +**  **non BART** **) Sources**  **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 0.69 15.66 16.36 4.42 0.49 0.10 -- 0.01 -- 0.10 -- 4.87 4.49 0.39 2007 98th percentile 6.85 15.60 22.48 44.12 4.68 0.77 -- 0.13 -- 1.27 -- 8.10 4.44 3.65 2007 (73) Worst 20% Days 3.28 15.67 18.97 20.99 2.31 0.47 -- 0.05 -- 0.46 -- 6.31 4.49 1.81 2008 Annual Average 0.25 15.66 15.91 1.57 0.17 0.04 -- 0.00 -- 0.03 -- 4.63 4.49 0.15 2008 98th percentile 3.36 15.81 19.19 21.36 2.52 0.63 -- 0.02 -- 0.19 -- 6.52 4.58 1.94 2008 (73) Worst 20% Days 1.23 15.70 16.93 7.85 0.85 0.19 -- 0.02 -- 0.17 -- 5.24 4.51 0.73 2009 Annual Average 0.37 15.66 16.03 2.34 0.27 0.04 -- 0.01 -- 0.05 -- 4.69 4.49 0.21 2009 98th percentile 4.41 15.72 20.16 28.20 3.37 0.25 -- 0.07 -- 0.71 -- 7.01 4.53 2.48 2009 (73) Worst 20% Days 1.84 15.70 17.55 11.77 1.34 0.20 -- 0.03 -- 0.26 -- 5.56 4.51 1.05 2010 Annual Average 0.84 15.66 16.51 5.40 0.58 0.12 -- 0.01 -- 0.13 -- 4.95 4.49 0.47 2010 98th percentile 7.32 15.81 23.17 46.55 5.13 0.70 -- 0.14 -- 1.36 -- 8.40 4.58 3.82 2010 (73) Worst 20% Days 3.92 15.64 19.58 25.12 2.71 0.57 -- 0.06 -- 0.58 -- 6.62 4.47 2.15Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 43 **AMEC** 

### Table **14 .**  **IMPROVE Site Receptor**
**– Group 14** **a –**  **Model Results for St. Thomas**  **WAPA BART** **- eligible**  **Sources 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 0.009 15.66 15.67 0.06 0.01 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.01 2007 98th percentile 0.15 15.47 15.61 0.95 0.12 0.00 -- 0.00 -- 0.02 -- 4.46 4.36 0.09 2007 (47) Worst 20% Days 0.045 10.09 10.14 0.29 0.04 0.00 -- 0.00 -- 0.00 -- 2.92 2.89 0.03 2008 Annual Average 0.006 15.66 15.67 0.04 0.00 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.00 2008 98th percentile 0.10 15.63 15.73 0.66 0.08 0.00 -- 0.00 -- 0.02 -- 4.53 4.46 0.07 2008 (23) Worst 20% Days 0.03 4.95 4.98 0.18 0.02 0.00 -- 0.00 -- 0.00 -- 1.44 1.43 0.02 2009 Annual Average 0.006 15.66 15.67 0.04 0.00 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.00 2009 98th percentile 0.12 15.72 15.84 0.75 0.10 0.00 -- 0.00 -- 0.01 -- 4.60 4.53 0.07 2009 (21) Worst 20% Days 0.03 4.51 4.54 0.19 0.02 0.00 -- 0.00 -- 0.00 -- 1.31 1.29 0.02 2010 Annual Average 0.001 15.66 15.66 0.01 0.00 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.00 2010 98th percentile 0.01 15.85 15.86 0.05 0.01 0.00 -- 0.00 -- 0.00 -- 4.61 4.61 0.00 2010 (26) Worst 20% Days 0.01 5.60 5.60 0.04 0.01 0.00 -- 0.00 -- 0.00 -- 1.61 1.61 0.00Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 44 **AMEC** 

### Table **15 . Hassel Island NPS**  **Receptor**
**– Group 14** **a –**  **Model Results for St. Thomas WAPA**  **BART -** **eligible Sources Hassel Island**  **BEXT**

**(Source) BEXT** 

**(BKG) BEXT** 

**(Total) Percent** 

**C HANGE**  **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 0.009 15.66 15.67 0.06 0.01 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.01 2007 98th percentile 0.15 15.47 15.61 0.95 0.12 0.00 -- 0.00 -- 0.02 -- 4.46 4.36 0.09 2007 (47) Worst 20% Days 0.05 10.09 10.14 0.29 0.04 0.00 -- 0.00 -- 0.00 -- 2.92 2.89 0.03 2008 Annual Average 0.003 15.66 15.67 0.02 0.00 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.00 2008 98th percentile 0.05 15.60 15.65 0.30 0.04 0.00 -- 0.00 -- 0.01 -- 4.48 4.45 0.03 2008 (27) Worst 20% Days 0.02 5.81 5.82 0.10 0.01 0.00 -- 0.00 -- 0.00 -- 1.68 1.67 0.01 2009 Annual Average 0.002 15.66 15.66 0.02 0.00 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.00 2009 98th percentile 0.02 15.55 15.58 0.16 0.02 0.00 -- 0.00 -- 0.00 -- 4.43 4.42 0.02 2009 (29) Worst 20% Days 0.01 6.23 6.24 0.08 0.01 0.00 -- 0.00 -- 0.00 -- 1.79 1.78 0.01 2010 Annual Average 0.002 15.66 15.66 0.02 0.00 0.000 -- 0.00 -- 0.00 -- 4.49 4.49 0.00 2010 98th percentile 0.02 15.72 15.75 0.16 0.01 0.01 -- 0.00 -- 0.00 -- 4.54 4.53 0.02 2010 (34) Worst 20% Days 0.01 7.31 7.33 0.08 0.01 0.00 -- 0.00 -- 0.00 -- 2.11 2.10 0.01Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 45 **AMEC** 

### Table **16 .**  **IMPROVE Site Receptor**
**– Group 14** **d**
**– Model Results for St. Thomas**  **WAPA (** **BART +**  **nonBART ) Sources**  **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 0.021 15.66 15.68 0.14 0.02 0.00 -- 0.00 -- 0.00 -- 4.50 4.49 0.01 2007 98th percentile 0.33 15.76 16.08 2.08 0.23 0.00 -- 0.01 -- 0.08 -- 4.75 4.55 0.21 2007 (40) Worst 20% Days 0.11 8.59 8.70 0.68 0.08 0.01 -- 0.00 -- 0.02 -- 2.53 2.46 0.07 2008 Annual Average 0.012 15.66 15.67 0.08 0.01 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.01 2008 98th percentile 0.22 15.58 15.80 1.43 0.17 0.01 -- 0.00 -- 0.04 -- 4.58 4.44 0.14 2008 (25) Worst 20% Days 0.06 5.38 5.45 0.39 0.04 0.01 -- 0.00 -- 0.01 -- 1.59 1.55 0.04 2009 Annual Average 0.012 15.66 15.67 0.07 0.01 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.01 2009 98th percentile 0.20 15.55 15.75 1.27 0.11 0.00 -- 0.01 -- 0.07 -- 4.54 4.42 0.13 2009 (21) Worst 20% Days 0.06 4.94 5.00 0.37 0.04 0.00 -- 0.00 -- 0.01 -- 1.45 1.42 0.04 2010 Annual Average 0.003 15.66 15.66 0.02 0.00 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.00 2010 98th percentile 0.02 15.85 15.87 0.11 0.01 0.00 -- 0.00 -- 0.00 -- 4.62 4.61 0.01 2010 (31) Worst 20% Days 0.01 6.67 6.68 0.08 0.01 0.00 -- 0.00 -- 0.00 -- 1.92 1.92 0.01Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 46 **AMEC** 

### Table **17 . Hassel Island NPS**  **Receptor**
**– Group 14** **d**
**– Model Results for St. Thomas**  **WAPA (** **BART +**  **nonBART ) Sources**  **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 0.018 15.66 15.68 0.12 0.01 0.00 -- 0.00 -- 0.00 -- 4.50 4.49 0.01 2007 98th percentile 0.26 15.76 16.02 1.68 0.21 0.00 -- 0.01 -- 0.05 -- 4.71 4.55 0.17 2007 (50) Worst 20% Days 0.09 10.73 10.83 0.58 0.07 0.00 -- 0.00 -- 0.02 -- 3.13 3.08 0.06 2008 Annual Average 0.012 15.66 15.67 0.08 0.01 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.01 2008 98th percentile 0.22 15.58 15.80 1.43 0.17 0.01 -- 0.00 -- 0.04 -- 4.58 4.44 0.14 2008 (25) Worst 20% Days 0.06 5.38 5.45 0.39 0.04 0.01 -- 0.00 -- 0.01 -- 1.59 1.55 0.04 2009 Annual Average 0.005 15.66 15.67 0.03 0.00 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.00 2009 98th percentile 0.06 15.55 15.61 0.37 0.04 0.00 -- 0.00 -- 0.01 -- 4.45 4.42 0.04 2009 (21) Worst 20% Days 0.03 6.66 6.69 0.17 0.02 0.00 -- 0.00 -- 0.00 -- 1.93 1.91 0.02 2010 Annual Average 0.006 15.66 15.67 0.04 0.00 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.00 2010 98th percentile 0.06 15.72 15.78 0.38 0.03 0.03 -- 0.00 -- 0.00 -- 4.56 4.53 0.04 2010 (38) Worst 20% Days 0.03 8.17 8.20 0.18 0.02 0.00 -- 0.00 -- 0.00 -- 2.37 2.35 0.02Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 47 **AMEC** 

### Table **18 .**  **I MPROVE Site Receptor** 
**– Group 14e** 
**– Model Results for St. Thomas WAPA (BART + nonBART)**  **+ Other St. Thomas**  **Sources 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 0.43 0.03 0.01 0.00 0.00 0.00 0.03 0.00 4.53 4.49 0.04 2007 98th percentile 0.99 15.58 16.57 6.35 0.40 0.03 0.00 0.05 0.00 0.51 0.00 5.05 4.44 0.62 2007 (58) Worst 20% Days 0.33 12.45 12.79 2.13 0.16 0.03 0.00 0.01 0.00 0.13 0.00 3.77 3.57 0.20 2008 Annual Average 0.04 15.66 15.70 0.23 0.02 0.01 0.00 0.00 0.00 0.01 0.00 4.51 4.49 0.02 2008 98th percentile 0.60 15.81 16.41 3.81 0.17 0.01 0.00 0.04 0.00 0.38 0.00 4.95 4.58 0.37 2008 (31) Worst 20% Days 0.18 6.67 6.86 1.16 0.08 0.03 0.00 0.01 0.00 0.07 0.00 2.03 1.92 0.11 2009 Annual Average 0. 04 15.66 15.70 0.23 0.02 0.00 0.00 0.00 0.00 0.01 0.00 4.51 4.49 0.02 2009 98th percentile 0.79 15.85 16.64 4.99 0.51 0.06 0.00 0.02 0.00 0.20 0.00 5.09 4.61 0.49 2009 (33) Worst 20% Days 0.18 7.09 7.27 1.16 0.09 0.02 0.00 0.01 0.00 0.06 0.00 2.15 2.04 0.11 2010 Annual Average 0.004 15.66 15.67 0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4.49 4.49 0.00 2010 98th percentile 0.03 15.63 15.66 0.18 0.02 0.00 0.00 0.00 0.00 0.00 0.00 4.48 4.46 0.02 2010 (36) Worst 20% Days 0.02 7.75 7.77 0.14 0.02 0.00 0.00 0.00 0.00 0.00 0.00 2.24 2.23 0.01Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 48 **AMEC** 

### Table **19 . Hassel Island NPS**  **Receptor**
**– Group 14e** 
**– Model Results for St. Thomas WAPA (BART + nonBART) + Other St.**  **Thomas Sources 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 0.92 15.66 16.59 5.89 0.08 0.01 -- 0.08 -- 0.75 -- 5.05 4.49 0.57 2007 98th percentile 1.99 15.81 17.80 12.61 0.10 0.01 -- 0.17 -- 1.71 -- 5.77 4.58 1.19 2007 (73) Worst 20% Days 1.65 15.67 17.32 10.51 0.16 0.02 -- 0.13 -- 1.33 -- 5.49 4.49 1.00 2008 Annual Average 0.83 15.66 16.49 5.27 0.06 0.01 -- 0.07 -- 0.69 -- 5.00 4.49 0.51 2008 98th percentile 2.13 15.60 17.74 13.68 0.07 0.01 -- 0.19 -- 1.87 -- 5.73 4.45 1.28 2008 (73) Worst 20% Days 1.65 15.69 17.34 10.54 0.08 0.03 -- 0.14 -- 1.41 -- 5.50 4.50 1.00 2009 Annual Average 0.87 15.66 16.53 5.53 0.04 0.01 -- 0.07 -- 0.74 -- 5.02 4.49 0.53 2009 98th percentile 2.34 15.72 18.06 14.87 0.02 0.00 -- 0.21 -- 2.10 -- 5.91 4.53 1.39 2009 (73) Worst 20% Days 1.76 15.68 17.44 11.21 0.07 0.01 -- 0.15 -- 1.53 -- 5.56 4.50 1.06 2010 Annual Average 1.76 15.66 17.42 11.22 0.08 0.02 -- 0.15 -- 1.51 -- 5.52 4.49 1.04 2010 98th percentile 4.02 15.81 19.83 25.43 0.18 0.06 -- 0.34 -- 3.44 -- 6.85 4.58 2.27 2010 (73) Worst 20% Days 3.54 15.66 19.20 22.58 0.13 0.03 -- 0.31 -- 3.07 -- 6.52 4.49 2.03Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 49 **AMEC** 

### Table **20 .**  **IMPROVE Site**
**– Group 6** **a –**  **St. Croix, WAPA**  **BART -** **eligible Sources 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 0.02 15.66 15.68 0.11 0.01 0.00 -- 0.00 -- 0.00 -- 4.50 4.49 0.01 2007 98th percentile 0.18 15.63 15.81 1.16 0.14 0.00 -- 0.00 -- 0.04 -- 4.58 4.46 0.12 2007 (73) Worst 20% Days 0.09 15.67 15.75 0.55 0.06 0.01 -- 0.00 -- 0.02 -- 4.54 4.49 0.05 2008 Annual Average 0.01 15.66 15.67 0.03 0.00 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.00 2008 98th percentile 0.07 15.63 15.70 0.45 0.04 0.00 -- 0.00 -- 0.02 -- 4.51 4.46 0.04 2008 (65) Worst 20% Days 0.03 13.98 14.01 0.17 0.02 0.00 -- 0.00 -- 0.00 -- 4.04 4.02 0.02 2009 Annual Average 0.01 15.66 15.67 0.06 0.01 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.01 2009 98th percentile 0.14 15.85 15.99 0.86 0.09 0.00 -- 0.00 -- 0.03 -- 4.69 4.61 0.09 2009 (68) Worst 20% Days 0.05 14.62 14.67 0.30 0.03 0.00 -- 0.00 -- 0.01 -- 4.23 4.20 0.03 2010 Annual Average 0.02 15.66 15.68 0.10 0.01 0.00 -- 0.00 -- 0.00 -- 4.50 4.49 0.01 2010 98th percentile 0.17 15.85 16.02 1.05 0.09 0.06 -- 0.00 -- 0.01 -- 4.71 4.61 0.10 2010 (73) Worst 20% Days 0.08 15.64 15.72 0.50 0.05 0.01 -- 0.00 -- 0.02 -- 4.52 4.47 0.05Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 50 **AMEC** 

### Table **21 . Hassel Island NPS**  **Site**
**– Group 6** **a –**  **St. Croix, WAPA BART** **- eligible Sources**  **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 15.68 0.14 0.015 0.001 -- 0.00 -- 0.00 -- 4.50 4.49 0.01 2007 98th percentile 0.18 15.63 15.81 1.16 0.14 0.00 -- 0.00 -- 0.04 -- 4.58 4.46 0.12 2007 (50) Worst 20% Days 0.10 15.68 15.78 0.63 0.07 0.01 -- 0.00 -- 0.02 -- 4.56 4.50 0.06 2008 Annual Average 0.01 15.66 15.67 0.05 0.01 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.01 2008 98th percentile 0.10 15.85 15.95 0.64 0.06 0.04 -- 0.00 -- 0.01 -- 4.67 4.61 0.06 2008 (73) Worst 20% Days 0.04 15.70 15.74 0.26 0.03 0.00 -- 0.00 -- 0.01 -- 4.54 4.51 0.03 2009 Annual Average 0.01 15.66 15.67 0.07 0.0 1 0.001 -- 0.00 -- 0.00 -- 4.49 4.49 0.01 2009 98th percentile 0.14 15.85 15.99 0.86 0.09 0.00 -- 0.00 -- 0.03 -- 4.69 4.61 0.09 2009 (73) Worst 20% Days 0.06 15.92 15.98 0.37 0.04 0.00 -- 0.00 -- 0.01 -- 4.61 4.57 0.04 2010 Annual Average 0.03 15.66 15.69 0.18 0.02 0.00 -- 0.00 -- 0.01 -- 4.50 4.49 0.02 2010 98th percentile 0.21 15.76 15.96 1.32 0.17 0.00 -- 0.00 -- 0.03 -- 4.68 4.55 0.13 2010 (73 ) Worst 20% Days 0.13 15.65 15.78 0.83 0.09 0.01 -- 0.00 -- 0.03 -- 4.56 4.48 0.08Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 51 **AMEC** 

### Table **22 .**  **IMPROVE Site**
**– Group 6** **d**
**– St. Croix, WAPA**  **( BART**  **+ nonBART )**  **Sources 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 0.08 15.66 15.74 0.48 0.05 0.01 -- 0.00 -- 0.01 -- 4.53 4.49 0.05 2007 98th percentile 0.77 15.60 16.37 4.95 0.55 0.02 -- 0.02 -- 0.18 -- 4.93 4.44 0.48 2007 (73) Worst 20% Days 0.37 15.67 16.04 2.36 0.25 0.04 -- 0.01 -- 0.07 -- 4.72 4.49 0.23 2008 Annual Average 0.02 15.66 15.69 0.15 0.02 0.00 -- 0.00 -- 0.00 -- 4.50 4.49 0.01 2008 (65) 98th percentile 0.31 15.75 16.06 1.97 0.25 0.01 -- 0.01 -- 0.05 -- 4.74 4.55 0.19 2008 (72) Worst 20% Days 0.11 15.49 15.60 0.73 0.08 0.01 -- 0.00 -- 0.02 -- 4.52 4.45 0.07 2009 Annual Average 0.04 15.66 15.70 0.24 0.03 0.00 -- 0.00 -- 0.01 -- 4.51 4.49 0.02 2009 98th percentile 0.53 15.85 16.38 3.33 0.21 0.19 -- 0.01 -- 0.11 -- 4.93 4.61 0.33 2009 (73) Worst 20% Days 0.19 15.70 15.88 1.19 0.13 0.02 -- 0.00 -- 0.03 -- 4.63 4.51 0.12 2010 Annual Average 0.06 15.66 15.72 0.39 0.04 0.01 -- 0.00 -- 0.01 -- 4.53 4.49 0.04 2010 98th percentile 0.61 15.63 16.24 3.90 0.44 0.02 -- 0.01 -- 0.14 -- 4.85 4.46 0.38 2010 (73) Worst 20% Days 0.30 15.64 15.94 1.92 0.20 0.03 -- 0.01 -- 0.06 -- 4.66 4.47 0.19Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 52 **AMEC** 

### Table **23 .**  **Hassel Island NPS Site**
**– Group 6d** 
**– St. Croix, WAPA**  **( BART**  **+ nonBART** **) Sources**  **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 0.09 15.66 15.75 0.58 0.06 0.0 1 -- 0.00 -- 0.02 -- 4.54 4.49 0.06 2007 98th percentile 0.77 15.81 16.58 4.89 0.59 0.04 -- 0.01 -- 0.13 -- 5.06 4.58 0.48 2007 (50) Worst 20% Days 0.41 15.68 16.09 2.61 0.28 0.04 -- 0.01 -- 0.08 -- 4.75 4.50 0.26 2008 Annual Average 0.04 15.66 15.70 0.23 0.02 0.00 -- 0.00 -- 0.01 -- 4.51 4.49 0.02 2008 98th percentile 0.43 15.85 16.29 2.74 0.33 0.06 -- 0.00 -- 0.04 -- 4.88 4.61 0.27 2008 (73) Worst 20% Days 0.18 15.70 15.88 1.13 0.12 0.02 -- 0.00 -- 0.03 -- 4.62 4.51 0.11 2009 Annual Average 0.05 15.66 15.71 0.31 0.03 0.00 -- 0.00 -- 0.01 -- 4.52 4.49 0.03 2009 98th percentile 0.56 15.75 16.32 3.56 0.38 0.01 -- 0.02 -- 0.15 -- 4.90 4.55 0.35 2009 (73) Worst 20% Days 0.24 15.70 15.94 1.51 0.17 0.02 -- 0.00 -- 0.05 -- 4.66 4.51 0.15 2010 Annual Average 0.11 15.66 15.78 0.72 0.08 0.01 -- 0.00 -- 0.02 -- 4.56 4.49 0.07 2010 98th percentile 0.85 15.85 16.70 5.36 0.46 0.32 -- 0.01 -- 0.06 -- 5.13 4.61 0.52 2010 (73) Worst 20% Days 0.50 15.65 16.16 3.23 0.34 0.05 -- 0.01 -- 0.10 -- 4.80 4.48 0.32Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 53 **AMEC** 

### Table **24 .**  **IMPROVE Site**
**– Group 2**  **- St. John Point Sources**  **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 0.24 15.66 15.90 1.54 0.01 0.00 -- 0.02 -- 0.21 -- 4.64 4.49 0.15 2007 98th percentile 1.71 15.47 17.18 11.06 0.01 0.00 -- 0.16 -- 1.55 -- 5.41 4.36 1.05 2007 (73) Worst 20% Days 0.99 15.65 16.64 6.31 0.02 0.00 -- 0.09 -- 0.88 -- 5.09 4.48 0.61 2008 Annual Average 0.09 15.66 15.75 0.55 0.00 0.00 -- 0.01 -- 0.07 -- 4.54 4.49 0.05 2008 98th percentile 1.01 15.58 16.60 6.51 0.01 0.00 -- 0.09 -- 0.91 -- 5.07 4.44 0.63 2008 (73) Worst 20% Days 0.42 15.67 16.09 2.69 0.01 0.01 -- 0.04 -- 0.36 -- 4.75 4.49 0.26 2009 Annual Average 0.10 15.66 15.76 0.64 0.00 0.00 -- 0.01 -- 0.09 -- 4.55 4.49 0.06 2009 98th percentile 1.09 15.60 16.69 6.98 0.02 0.00 -- 0.10 -- 0.97 -- 5.12 4.45 0.67 2009 (73) Worst 20% Days 0.49 15.67 16.17 3.15 0.01 0.00 -- 0.04 -- 0.43 -- 4.80 4.49 0.31 2010 Annual Average 0.01 15.66 15.67 0.06 0.00 0.00 -- 0.00 -- 0.01 -- 4.49 4.49 0.01 2010 98th percentile 0.08 15.76 15.84 0.53 0.03 0.00 -- 0.01 -- 0.05 -- 4.60 4.55 0.05 2010 (34) Worst 20% Days 0.05 7.33 7.38 0.31 0.00 0.00 -- 0.00 -- 0.04 -- 2.14 2.11 0.03Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 54 **AMEC** 

### Table **25 .**  **Hassel Island NPS Site**  **- Group 2**  **- St. John Point Sources**  **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 0.22 15.66 15.89 1.42 0.05 0.01 -- 0.02 -- 0.15 -- 4.63 4.49 0.14 2007 98th percentile 1.26 15.55 16.81 8.12 0.16 0.13 -- 0.09 -- 0.88 -- 5.20 4.42 0.78 2007 (73) Worst 20% Days 0.64 15.68 16.32 4.13 0.13 0.03 -- 0.04 -- 0.44 -- 4.90 4.50 0.40 2008 Annual Average 0.13 1 5.66 15.80 0.86 0.03 0.01 -- 0.01 -- 0.09 -- 4.57 4.49 0.09 2008 98th percentile 0.63 15.55 16.18 4.06 0.07 0.01 -- 0.05 -- 0.50 -- 4.81 4.42 0.40 2008 (73) Worst 20% Days 0.38 15.67 16.06 2.44 0.08 0.04 -- 0.02 -- 0.25 -- 4.73 4.49 0.24 2009 Annual Average 0.13 15.66 15.79 0.82 0.02 0.01 -- 0.01 -- 0.09 -- 4.57 4.49 0.08 2009 98th percentile 0.48 15.62 16.10 3.07 0.09 0.01 -- 0.04 -- 0.35 -- 4.76 4.46 0.30 2009 (73) Worst 20% Days 0.36 15.65 16.01 2.29 0.07 0.02 -- 0.03 -- 0.25 -- 4.71 4.48 0.23 2010 Annual Average 0.73 15.66 16.40 4.70 0.14 0.04 -- 0.05 -- 0.50 -- 4.94 4.49 0.45 2010 98th percentile 1.99 15.62 17.61 12.77 0.34 0.02 -- 0.15 -- 1.48 -- 5.66 4.46 1.20 2010 (73) Worst 20% Days 1.71 15.68 17.39 10.95 0.34 0.09 -- 0.12 -- 1.17 -- 5.53 4.49 1.04Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 55 **AMEC** 

### Table **26 .**  **IMPROVE Site**
**– Group 3**  **- St. John Marine Vessels, No Reductions**  **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 0.04 15.66 15.70 0.22 0.01 0.00 -- 0.00 -- 0.02 -- 4.51 4.49 0.02 2007 98th percentile 0.39 15.55 15.95 2.54 0.17 0.02 -- 0.02 -- 0.18 -- 4.67 4.42 0.25 2007 (73) Worst 20% Days 0.17 15.67 15.84 1.12 0.04 0.01 -- 0.01 -- 0.12 -- 4.60 4.49 0.11 2008 Annual Average 0.02 15.66 15.68 0.12 0.00 0.00 -- 0.00 -- 0.01 -- 4.50 4.49 0.01 2008 98th percentile 0.25 15.60 15.85 1.60 0.12 0.07 -- 0.01 -- 0.05 -- 4.61 4.45 0.16 2008 (26) Worst 20% Days 0.10 5.59 5.69 0.61 0.02 0.01 -- 0.01 -- 0.07 -- 1.66 1.61 0.06 2009 Annual Average 0.01 15.66 15.68 0.09 0.00 0.00 -- 0.00 -- 0.01 -- 4.49 4.49 0.01 2009 98th percentile 0.07 15.85 15.92 0.46 0.04 0.02 -- 0.00 -- 0.01 -- 4.65 4.61 0.05 2009 (26 ) Worst 20% Days 0.07 5.59 5.66 0.44 0.02 0.00 -- 0.00 -- 0.04 -- 1.65 1.60 0.04 2010 Annual Average 0.00 15.66 15.66 0.00 0.00 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.00 2010 98th percentile 0.00 15.76 15.76 0.02 0.00 0.00 -- 0.00 -- 0.00 -- 4.55 4.55 0.00 2010 (26) Worst 20% Days 0.00 5.60 5.61 0.02 0.00 0.00 -- 0.00 -- 0.00 -- 1.62 1.61 0.00Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 56 **AMEC** 

### Table **27 .**  **Hassel Island NPS Site**  **- Group 3**  **- St. John Marine Vessels, No Reductions**  **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 0.08 0.01 -- 0.00 -- 0.04 -- 4.57 4.49 0.09 2007 98th percentile 0.82 15.76 16.58 5.25 0.65 0.02 -- 0.01 -- 0.14 -- 5.06 4.55 0.51 2007 (73) Worst 20% Days 0.42 15.68 16.10 2.67 0.26 0.03 -- 0.01 -- 0.11 -- 4.76 4.50 0.26 2008 Annual Average 0.09 15.66 15.75 0.56 0.05 0.01 -- 0.00 -- 0.03 -- 4.54 4.49 0.06 2008 98th percentile 0.44 15.76 16.20 2.80 0.29 0.08 -- 0.01 -- 0.06 -- 4.82 4.55 0.28 2008 (73) Worst 20% Days 0.27 15.67 15.95 1.73 0.17 0.03 -- 0.01 -- 0.07 -- 4.67 4.49 0.17 2009 Annual Average 0.08 15.66 15.74 0.49 0.04 0.01 -- 0.00 -- 0.03 -- 4.53 4.49 0.05 2009 98th percentile 0.31 15.63 15.94 2.00 0.19 0.01 -- 0.01 -- 0.10 -- 4.66 4.46 0.20 2009 (73) Worst 20% Days 0.23 15.67 15.90 1.45 0.14 0.02 -- 0.01 -- 0.07 -- 4.63 4.49 0.14 2010 Annual Average 0.45 15.66 16.12 2.90 0.26 0.04 -- 0.01 -- 0.14 -- 4.77 4.49 0.28 2010 98th percentile 1.86 15.81 17.68 11.81 1.44 0.09 -- 0.03 -- 0.29 -- 5.70 4.58 1.12 2010 (73) Worst 20% Days 1.34 15.72 17.06 8.57 0.84 0.11 -- 0.04 -- 0.36 -- 5.34 4.52 0.82Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 57 **AMEC** 

### Table **28 .**  **IMPROVE Site**
**– Group**  **3 alt**  **- St. John Marine Vessels, with**  **Reductions 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 0.03 0.00 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.00 2007 98th percentile 0.06 15.55 15.61 0.39 0.03 0.00 -- 0.00 -- 0.03 -- 4.45 4.42 0.04 2007 (60) Worst 20% Days 0.03 12.88 12.91 0.17 0.01 0.00 -- 0.00 -- 0.02 -- 3.71 3.69 0.02 2008 Annual Average 0.00 15.66 15.67 0.02 0.00 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.00 2008 98th percentile 0.04 15.60 15.64 0.27 0.02 0.02 -- 0.00 -- 0.01 -- 4.48 4.45 0.03 2008 (24) Worst 20% Days 0.01 5.16 5.17 0.10 0.00 0.00 -- 0.00 -- 0.01 -- 1.49 1.48 0.01 2009 Annual Average 0.00 15.66 15.66 0.01 0.00 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.00 2009 98th percentile 0.01 15.85 15.86 0.08 0.01 0.00 -- 0.00 -- 0.00 -- 4.61 4.61 0.01 2009 (18) Worst 20% Days 0.01 3.87 3.88 0.07 0.00 0.00 -- 0.00 -- 0.01 -- 1.12 1.11 0.01 2010 Annual Average 0.00 15.66 15.66 0.00 0.00 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.00 2010 98th percentile 0.00 15.85 15.85 0.00 0.00 0.00 -- 0.00 -- 0.00 -- 4.61 4.61 0.00 2010 (11) Worst 20% Days 0.00 2.37 2.37 0.00 0.00 0.00 -- 0.00 -- 0.00 -- 0.68 0.68 0.00Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 58 **AMEC** 

### Table **29 .**  **Hassel Island NPS Site**
**– Group 3alt**  **- St. John Marine Vessels, With Reductions**  **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 15.68 0.14 0.01 0.00 -- 0.00 -- 0.01 -- 4.50 4.49 0.01 2007 98th percentile 0.13 15.76 15.88 0.81 0.10 0.01 -- 0.00 -- 0.02 -- 4.63 4.55 0.08 2007 (73) Worst 20% Days 0.07 15.68 15.75 0.42 0.04 0.01 -- 0.00 -- 0.02 -- 4.54 4.50 0.04 2008 Annual Average 0.01 15.66 15.68 0.09 0.01 0.00 -- 0.00 -- 0.00 -- 4.50 4.49 0.01 2008 98th percentile 0.07 15.85 15.92 0.46 0.01 0.05 -- 0.00 -- 0.01 -- 4.65 4.61 0.05 2008 (73) Worst 20% Days 0.04 15.67 15.72 0.29 0.02 0.01 -- 0.00 -- 0.01 -- 4.52 4.49 0.03 2009 Annual Average 0.01 15.66 15.67 0.08 0.01 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.01 2009 98th percentile 0.05 15.72 15.77 0.32 0.03 0.00 -- 0.00 -- 0.01 -- 4.56 4.53 0.03 2009 (73) Worst 20% Days 0.04 15.67 15.71 0.23 0.02 0.00 -- 0.00 -- 0.01 -- 4.51 4.49 0.02 2010 Annual Average 0.07 15.66 15.74 0.47 0.04 0.01 -- 0.00 -- 0.02 -- 4.53 4.49 0.05 2010 98th percentile 0.34 15.72 16.07 2.17 0.11 0.18 -- 0.00 -- 0.04 -- 4.74 4.53 0.22 2010 (73) Worst 20% Days 0.23 15.71 15.94 1.44 0.12 0.04 -- 0.01 -- 0.05 -- 4.66 4.52 0.14Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 59 **AMEC** 

### Table **30 . IMPROVE Site** 
**– Group 4** 
**– Puerto Rico Surrogate**  **Power Plant 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** 2009 Annual Average 0.00 15.66 15.66 0.00 0.00 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.00 2009 98th percentile 0.00 15.60 15.60 0.00 0.00 0.00 -- 0.00 -- 0.00 -- 4.45 4.45 0.00 2009 (2) Worst 20% Days 0.00 0.43 0.44 0.01 0.00 0.00 -- 0.00 -- 0.00 -- 0.13 0.13 0.00 

### Table **31 . Hassel Island NPS**  **Site**
**– Group 4** 
**– Puerto Rico Surrogate**  **Power Plant 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** 2009 Annual Average 0.00 15.66 15.66 0.00 0.00 0.00 -- 0.00 -- 0.00 -- 4.49 4.49 0.00 2009 98th percentile 0.00 15.60 15.60 0.00 0.00 0.00 -- 0.00 -- 0.00 -- 4.45 4.45 0.00 2009 (2) Worst 20% Days 0.00 0.43 0.44 0.01 0.00 0.00 -- 0.00 -- 0.00 -- 0.13 0.13 0.00Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 60 **AMEC** 

### Table **32 .**  **IMPROVE Site**
**– Group 7** 
**– British Virgin Islands Oil Combustion**  **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** 2009 Annual Average 0.08 15.66 15.74 0.49 0.05 0.00 -- 0.00 -- 0.02 -- 4.54 4.49 0.05 2009 98th percentile 0.73 15.55 16.29 4.72 0.42 0.01 -- 0.03 -- 0.28 -- 4.88 4.42 0.46 2009 (73) Worst 20% Days 0.36 15.64 16.00 2.30 0.24 0.01 -- 0.01 -- 0.10 -- 4.70 4.47 0.36 

### Table **33 . Hassel Island NPS**  **Site**
**– Group 7** 
**– British Virgin Islands**  **Oil Combustion 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** 2009 Annual Average 0.15 15.66 15.81 0.97 0.12 0.00 -- 0.00 -- 0.03 -- 4.58 4.49 0.10 2009 98th percentile 0.65 15.72 16.38 4.18 0.50 0.01 -- 0.01 -- 0.13 -- 4.94 4.53 0.41 2009 (73) Worst 20% Days 0.46 15.67 16.13 2.93 0.36 0.01 -- 0.01 -- 0.08 -- 4.78 4.49 0.29Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 61 **AMEC** 

### Table **34 .**  **IMPROVE Site**
**– Group 8** 
**– Briti** **sh Virgin Islands Burning 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** 2009 Annual Average 0.03 15.66 15.69 0.18 0.00 0.00 -- 0.00 -- 0.03 -- 4.50 4.49 0.02 2009 98th percentile 0.25 15.72 15.98 1.60 0.00 0.00 -- 0.02 -- 0.23 -- 4.69 4.53 0.16 2009 (73) Worst 20% Days 0.13 15.64 15.77 0.82 0.00 0.00 -- 0.01 -- 0.12 -- 4.55 4.47 0.08 

### Table **35 .**  **Hassel Island NPS Site**
**– Group 8** 
**– Briti** **sh Virgin Islands 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** 2009 Annual Average 0.03 15.66 15.69 0.19 0.00 0.00 -- 0.00 -- 0.03 -- 4.51 4.49 0.02 2009 98th percentile 0.12 15.72 15.84 0.76 0.00 0.00 -- 0.01 -- 0.11 -- 4.60 4.53 0.08 2009 (73) Worst 20% Days 0.09 15.65 15.74 0.56 0.00 0.00 -- 0.01 -- 0.08 -- 4.54 4.48 0.06Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 62 **AMEC** 

### Table **36 . IMPROVE Site** 
**– Group 9** 
**– St. John**  **Fugitive Road Dust 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 2.02 15.66 17.69 12.91 0.00 0.00 -- 0.18 -- 1.84 -- 5.68 4.49 1.20 2007 98th percentile 4.87 15.63 20.50 31.19 0.00 0.00 -- 0.44 -- 4.43 -- 7.18 4.46 2.71 2007 (73) Worst 20% Days 3.65 15.68 19.32 23.27 0.00 0.00 -- 0.33 -- 3.32 -- 6.58 4.50 2.08 2008 Annual Average 1.68 15.66 17.35 10.74 0.00 0.00 -- 0.15 -- 1.53 -- 5.50 4.49 1.01 2008 98th percentile 3.78 15.63 19.40 24.16 0.00 0.00 -- 0.34 -- 3.43 -- 6.63 4.46 2.16 2008 (73) Worst 20% Days 3.18 18.25 21.43 20.29 0.00 0.00 -- 0.29 -- 2.89 -- 7.09 5.23 1.86 2009 Annual Average 1.82 15.66 17.48 11.59 0.00 0.00 -- 0.17 -- 1.65 -- 5.57 4.49 1.08 2009 98th percentile 4.34 15.81 20.15 27.44 0.00 0.00 -- 0.39 -- 3.95 -- 7.01 4.58 2.43 2009 (73) Worst 20% Days 3.36 15.75 19.11 21.35 0.00 0.00 -- 0.31 -- 3.06 -- 6.47 4.54 1.93 2010 Annual Average 1.58 15.66 17.24 10.09 0.00 0.00 -- 0.14 -- 1.44 -- 5.44 4.49 0.95 2010 98th percentile 2.52 15.85 18.37 15.87 0.00 0.00 -- 0.23 -- 2.29 -- 6.08 4.61 1.47 2010 (73) Worst 20% Days 2.47 15.75 18.22 15.66 0.00 0.00 -- 0.22 -- 2.24 -- 5.97 4.55 1.43Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 63 **AMEC** 

### Table **37 . Hassel Island NPS**  **Site**
**– Group 9** 
**– St. John**  **Fugitive Road Dust 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 0.22 15.66 15.88 1.41 0.00 0.00 -- 0.02 -- 0.20 -- 4.63 4.49 0.14 2007 98th percentile 0.64 15.55 16.19 4.09 0.00 0.00 -- 0.06 -- 0.58 -- 4.82 4.42 0.40 2007 (73) Worst 20% Days 0.49 15.67 16.15 3.10 0.00 0.00 -- 0.04 -- 0.44 -- 4.80 4.49 0.30 2008 Annual Average 0.24 15.66 15.90 1.51 0.00 0.00 -- 0.02 -- 0.22 -- 4.64 4.49 0.15 2008 98th percentile 0.86 15.60 16.45 5.50 0.00 0.00 -- 0.08 -- 0.78 -- 4.98 4.44 0.54 2008 (73) Worst 20% Days 0.61 15.66 16.27 3.91 0.00 0.00 -- 0.06 -- 0.56 -- 4.87 4.48 0.38 2009 Annual Average 0.21 15.66 15.87 1.32 0.00 0.00 -- 0.02 -- 0.19 -- 4.62 4.49 0.13 2009 98th percentile 0.60 15.85 16.45 3.79 0.00 0.00 -- 0.06 -- 0.55 -- 4.98 4.61 0.37 2009 (73) Worst 20% Days 0.48 15.68 16.17 3.09 0.00 0.00 -- 0.04 -- 0.44 -- 4.80 4.50 0.30 2010 Annual Average 0.62 15.66 16.28 3.93 0.00 0.00 -- 0.06 -- 0.56 -- 4.87 4.49 0.38 2010 98th percentile 0.99 15.85 16.84 6.21 0.00 0.00 -- 0.09 -- 0.90 -- 5.21 4.61 0.60 2010 (73) Worst 20% Days 0.88 15.73 16.61 5.58 0.00 0.00 -- 0.08 -- 0.80 -- 5.07 4.53 0.54Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 64 **AMEC** 

### Table **38 .**  **IMPROVE Site**
**– Group**  **10**
**– St. John Burning**  **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 0.34 15.66 16.00 2.17 0.00 0.00 -- 0.03 -- 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 0.15Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 65 **AMEC** 

### 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 0.03Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 66 **AMEC** 

### Table **40 .**  **IMPROVE Si te**  **– 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 0.00Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 67 **AMEC** 

### Table **41 .**  **Hassel Island NPS Si te**  **– 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 0.01Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 68 **AMEC** 

### 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 u sing 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 2.33Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 69 **AMEC** 

### Table **43 .**  **Hassel Island NPS Si te**  **– 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 u sing 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 0.48Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 70 **AMEC** 

### Table **44 . IMPROVE**  **Site**
**– Group 13** 
**– St. Jo** **hn 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 0.07Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 71 **AMEC** 

### Table **45 .**  **H assel Island NPS Site** 
**– Group 13** 
**– St. Jo** **hn 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 Averag e 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 0.05Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 72 **AMEC** 

### Table **46 . IMPROVE**  **Site**
**– Group 1**  **7**
**– St. John**  **No nroad**  **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 0.13Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: June 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 73 **AMEC** 

### Table **47 .**  **Hassel Island NPS Site**
**– Group 1**  **7**
**– St. John**  **No nroad**  **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 0.07Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: May 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 74 **AMEC** 

### 5. **FERRIES, CRUISE SHIPS, CARGO SHIPS** One of the modeled receptor locations is collocated at the IM PROVE 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 a n 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). F rom these roses, the persistence of

the winds from the east is very apparent. T he frequency of win ds 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 IM PROVE site is 46 meters (151 feet). The height was adjusted downward to 0 meters, and up to 92 meters, 138 meters, and 184 meters. T he 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 IM PROVE location and leaving the receptor heig ht at 46 meters. T he 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 wh y the marine sources do not result in modeled impacts at the IM PROVE 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. I t 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. N or is it clear that CALPUFF and analysis of the results can easily be run in this mode.Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: May 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 75 **AMEC** 

### Figure **11 .**  **Wind Rose for San Martin Airport, Puerto Rico, 2007 -** **2010** WRPLOT View - Lakes Environmental Software WIND ROSE PLOT: **San Juan L M Marin, Puerto Rico - 2007-2010 WBA** **N # 11641, WMO # 78526**

COMMENTS: COMPANY NAME:

MODELER:

DATE: **3/6/2012** PROJECT NO.: NORTH

SOUTH WE ST EAST 6% 12% 18% 24% 30%

W I N D S P E E D ( m/s ) > = 1 1 . 1 8 . 8 - 1 1 . 1 5 . 7 - 8 . 8 3 . 6 - 5 . 7 2 . 1 - 3 . 6 0 . 5 - 2 . 1 Ca l m s : 2 1 . 20 %

TOTAL COUNT: **19696 hrs.** CALM WINDS: **21.20%** DATA PERIOD: **2007 2008 2009 2010 Jan 1 - Dec 31**  **00:00 - 23:00**

AVG. WIND SPEED: **3.54 m/s** DISPLAY: **Wind Speed Direction (blowing from)** Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: May 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 76 **AMEC** 

### Figure **12 .**  **Wind Rose for San Mart in Airport, Puerto Rico, 2007**  WRPLOT View - Lakes Environmental Software WIND ROSE PLOT: **San Juan L M Marin, Puerto Rico - 2007 WBA** **N # 11641, WMO # 78526**

COMMENTS: COMPANY NAME:

MODELER:

DATE: **3/6/2012** PROJECT NO.: NORTH

SOUTH WE ST EAST 6% 12% 18% 24% 30%

W I N D S P E E D ( m/s ) > = 1 1 . 1 8 . 8 - 1 1 . 1 5 . 7 - 8 . 8 3 . 6 - 5 . 7 2 . 1 - 3 . 6 0 . 5 - 2 . 1 Ca l m s : 2 3 . 06 %

TOTAL COUNT: **8422 hrs.** CALM WINDS: **23.06%** DATA PERIOD: **2007 Jan 1 - Dec 31**  **00:00 - 23:00**

AVG. WIND SPEED: **3.36 m/s** DISPLAY: **Wind Speed Direction (blowing from)** Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: May 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 77 **AMEC** 

### Figure **13 .**  **Wind Rose for San M artin Airport, Puerto Rico, 2008**  WRPLOT View - Lakes Environmental Software WIND ROSE PLOT: **San Juan L M Marin, Puerto Rico - 2008 WBA** **N # 11641, WMO # 78526**

COMMENTS: COMPANY NAME:

MODELER:

DATE: **3/6/2012** PROJECT NO.: NORTH

SOUTH WE ST EAST 6% 12% 18% 24% 30%

W I N D S P E E D ( m/s ) > = 1 1 . 1 8 . 8 - 1 1 . 1 5 . 7 - 8 . 8 3 . 6 - 5 . 7 2 . 1 - 3 . 6 0 . 5 - 2 . 1 Ca l m s : 1 8 . 6 1 %

TOTAL COUNT: **8449 hrs.** CALM WINDS: **18.61%** DATA PERIOD: **2008 Jan 1 - Dec 31**  **00:00 - 23:00**

AVG. WIND SPEED: **3.82 m/s** DISPLAY: **Wind Speed Direction (blowing from)** Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: May 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 78 **AMEC** 

### Figure **14 .**  **Wind Rose for San Martin Airport, Puerto Rico, 2009**  WRPLOT View - Lakes Environmental Software WIND ROSE PLOT: **San Juan L M Marin, Puerto Rico - 2009 WBA** **N # 11641, WMO # 78526**

COMMENTS: COMPANY NAME:

MODELER:

DATE: **3/6/2012** PROJECT NO.: NORTH

SOUTH WE ST EAST 6% 12% 18% 24% 30%

W I N D S P E E D ( m/s ) > = 1 1 . 1 8 . 8 - 1 1 . 1 5 . 7 - 8 . 8 3 . 6 - 5 . 7 2 . 1 - 3 . 6 0 . 5 - 2 . 1 Ca l m s : 2 1 . 99%

TOTAL COUNT: **1396 hrs.** CALM WINDS: **21.99%** DATA PERIOD: **2009 Jan 1 - Dec 31**  **00:00 - 23:00**

AVG. WIND SPEED: **3.31 m/s** DISPLAY: **Wind Speed Direction (blowing from)** Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: May 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 79 **AMEC** 

### Figure **15 .**  **Wind Rose for San M artin Airport, Puerto Rico, 2010**  WRPLOT View - Lakes Environmental Software WIND ROSE PLOT: **San Juan L M Marin, Puerto Rico - 2010 WBA** **N # 11641, WMO # 78526**

COMMENTS: COMPANY NAME:

MODELER:

DATE: **3/6/2012** PROJECT NO.: NORTH

SOUTH WE ST EAST 5% 10% 15% 20% 25%

W I N D S P E E D ( m/s ) > = 1 1 . 1 8 . 8 - 1 1 . 1 5 . 7 - 8 . 8 3 . 6 - 5 . 7 2 . 1 - 3 . 6 0 . 5 - 2 . 1 Ca l m s : 24 . 77%

TOTAL COUNT: **1429 hrs.** CALM WINDS: **24.77%** DATA PERIOD: **2010 Jan 1 - Dec 31**  **00:00 - 23:00**

AVG. WIND SPEED: **3.11 m/s** DISPLAY: **Wind Speed Direction (blowing from)** Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: May 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 80 **AMEC** 

### Figure **16 .**  **Wind Rose for Charlotte Amalie, St. Thomas** **, 2 007** **- 2010**  WRPLOT View - Lakes Environmental Software WIND ROSE PLOT: **Charlotte Amalie, St. Thomas, Virgin Islands - 2007-2010 WBA** **N # 11640, WMO # (n/a)**

COMMENTS: COMPANY NAME:

MODELER:

DATE: **3/6/2012** PROJECT NO.: NORTH

SOUTH WE ST EAST 9% 18% 27% 36% 45%

W I N D S P E E D ( m/s ) > = 1 1 . 1 8 . 8 - 1 1 . 1 5 . 7 - 8 . 8 3 . 6 - 5 . 7 2 . 1 - 3 . 6 0 . 5 - 2 . 1 Ca l m s : 5 . 1 7%

TOTAL COUNT: **34153 hrs.** CALM WINDS: **5.17%** DATA PERIOD: **2007 2008 2009 2010 Jan 1 - Dec 31**  **00:00 - 23:00**

AVG. WIND SPEED: **4.50 m/s** DISPLAY: **Wind Speed Direction (blowing from)** Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: May 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 81 **AMEC** 

### Figure **17 .**  **Wind Rose for Charlot te Amalie, St. Thomas, 2007**  WRPLOT View - Lakes Environmental Software WIND ROSE PLOT: **Charlotte Amalie, St. Thomas, Virgin Islands - 2007 WBA** **N # 11640, WMO # (n/a)**

COMMENTS: COMPANY NAME:

MODELER:

DATE: **3/6/2012** PROJECT NO.: NORTH

SOUTH WE ST EAST 8% 16% 24% 32% 40%

W I N D S P E E D ( m/s ) > = 1 1 . 1 8 . 8 - 1 1 . 1 5 . 7 - 8 . 8 3 . 6 - 5 . 7 2 . 1 - 3 . 6 0 . 5 - 2 . 1 Ca l m s : 4 . 5 1 %

TOTAL COUNT: **8479 hrs.** CALM WINDS: **4.51%** DATA PERIOD: **2007 Jan 1 - Dec 31**  **00:00 - 23:00**

AVG. WIND SPEED: **4.56 m/s** DISPLAY: **Wind Speed Direction (blowing from)** Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: May 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 82 **AMEC** 

### Figure **18 .**  **Wind Rose for Ch arlotte Amalie, St. Thomas, 2008**  WRPLOT View - Lakes Environmental Software WIND ROSE PLOT: **Charlotte Amalie, St. Thomas, Virgin Islands - 2008 WBA** **N # 11640, WMO # (n/a)**

COMMENTS: COMPANY NAME:

MODELER:

DATE: **3/6/2012** PROJECT NO.: NORTH

SOUTH WE ST EAST 9% 18% 27% 36% 45%

W I N D S P E E D ( m/s ) > = 1 1 . 1 8 . 8 - 1 1 . 1 5 . 7 - 8 . 8 3 . 6 - 5 . 7 2 . 1 - 3 . 6 0 . 5 - 2 . 1 Ca l m s : 5 . 5 7%

TOTAL COUNT: **8578 hrs.** CALM WINDS: **5.57%** DATA PERIOD: **2008 Jan 1 - Dec 31**  **00:00 - 23:00**

AVG. WIND SPEED: **4.59 m/s** DISPLAY: **Wind Speed Direction (blowing from)** Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: May 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 83 **AMEC** 

### Figure **19 .**  **Wind Rose for Ch arlotte**  **Am alie, St. Thomas, 2009**  WRPLOT View - Lakes Environmental Software WIND ROSE PLOT: **Charlotte Amalie, St. Thomas, Virgin Islands - 2009 WBA** **N # 11640, WMO # (n/a)**

COMMENTS: COMPANY NAME:

MODELER:

DATE: **3/6/2012** PROJECT NO.: NORTH

SOUTH WE ST EAST 9% 18% 27% 36% 45%

W I N D S P E E D ( m/s ) > = 1 1 . 1 8 . 8 - 1 1 . 1 5 . 7 - 8 . 8 3 . 6 - 5 . 7 2 . 1 - 3 . 6 0 . 5 - 2 . 1 Ca l m s : 4 . 56 %

TOTAL COUNT: **8516 hrs.** CALM WINDS: **4.56%** DATA PERIOD: **2009 Jan 1 - Dec 31**  **00:00 - 23:00**

AVG. WIND SPEED: **4.52 m/s** DISPLAY: **Wind Speed Direction (blowing from)** Air Quality Modeling in support of the Regional Haze SIP for the Virgin Islands: May 2012

Final Modeling for Visibility Reduction

Project No.: 6480110234 Page 84 **AMEC** 

### Figure **20 .**  **Wind Rose for Ch arlotte Amalie, St. Thomas, 2010**  WRPLOT View - Lakes Environmental Software WIND ROSE PLOT: **Charlotte Amalie, St. Thomas, Virgin Islands - 2010 WBA** **N # 11640, WMO # (n/a)**

COMMENTS: COMPANY NAME:

MODELER:

DATE: **3/6/2012** PROJECT NO.: NORTH

SOUTH WE ST EAST 7% 14% 21% 28% 35%

W I N D S P E E D ( m/s ) > = 1 1 . 1 8 . 8 - 1 1 . 1 5 . 7 - 8 . 8 3 . 6 - 5 . 7 2 . 1 - 3 . 6 0 . 5 - 2 . 1 Ca l m s : 6 . 04 %

TOTAL COUNT: **8580 hrs.** CALM WINDS: **6.04%** DATA PERIOD: **2010 Jan 1 - Dec 31**  **00:00 - 23:00**

AVG. WIND SPEED: **4.34 m/s** DISPLAY: **Wind Speed Direction (blowing from)**