Mr. Robert Kelley March 31, 2011 

EPA Contract No. EP-D-05-096, WA No. 5-16 Page 1 of 13 

Chapter 1: Background 

Section 169A of the Clean Air Act requires sources affecting areas designated as Class I 

areas to reduce emissions to eliminate all anthropogenic obscuration of visibility, with the 

goal of reaching natural background levels of visibility by 2064. The U.S. Environmental 

Protection Agency (EPA) requires a State Implementation Plan or a Federal 

Implementation Plan that describes the level of visibility resulting from natural 

impairment and how much anthropogenic sources need to be reduced in the first ten years 

(by 2018) to keep the area on track to attain the goal of reaching natural background 

levels by 2064.

Virgin Islands National Park, on St. John in the United States Territory of the Virgin 

Islands (USVI), is a Class I area where visibility of the national park is to be protected. 

Thus, the Virgin Islands National Park is required to develop a plan to reduce emissions 

to improve visibility over the ten year period ending 2018. 

Emissions from sources on St. John and other nearby islands in the region, may be 

contributing to visibility impairment in the Virgin Islands National Park. The purpose of 

this study is to perform a sensitivity study and determine what type of emissions and 

amounts would have a visibility impact on the Class I area. 
Mr. Robert Kelley March 31, 2011 

EPA Contract No. EP-D-05-096, WA No. 5-16 Page 2 of 13 

Chapter 2: Model Setup 

2.1 Site Description 

The Virgin Islands National Park covers approximately 60% of St. John located in the United 

States Virgin Islands. The park also contains Hassel Island, a small island located in Charlotte 

Amalie Harbor of St. Thomas. St. John is home to 4,197 persons, according to the 2000 United 

States Census Bureau data. This represents just under than 4% of the total population of the 

USVI. St. John is less than 5 kilometers from two more populated islands, the USVI of St. 

Thomas to the West, and the British Virgin Island (BVI) to the Northeast. There are many other 

islands within the modeling domain, including St. Croix approximately 60 km to the South, and 

Puerto Rico about 90 km to the West. Figure 1 presents the Caribbean Basin and approximate 

modeling domain. Figure 2 presents the park boundaries and nearby islands. 

Figure 1: Approximate Modeling Domain and Surrounding Area
Mr. Robert Kelley March 31, 2011 

EPA Contract No. EP-D-05-096, WA No. 5-16 Page 3 of 13 

Figure 2: Park Boundaries and Nearby Islands 

2.2 Meteorological Data 

MACTEC obtained and applied the necessary meteorological data for use in CALPUFF for the project 

area. MACTEC used data from the period 2007 through 2010 as those were the only years with National 

Data Buoy Center (NDBC) data available. Discussion of MACTEC’s examination of and subsequent 

decision to use NDBC data is documented in Appendix A. The meteorological data used was from two 

National Weather Service stations. The upper air data was from San Juan L M Marin Airport (WBAN 

11641) in San Juan, Puerto Rico, which is the closest upper air station to the Virgin Islands National Park. 

The hourly surface weather data was from Charlotte Amalie Airport (WBAN 11640) in Charlotte Amalie, 

St. Thomas, which is the closest surface meteorology station to the Virgin Islands National Park. 

Overwater buoy data from between 2 and 5 NDBC stations was used for each year of CALMET data 

processing, depending on availability (Table 1 in Tables section of report).

The hourly surface data is required by CALMET in one of two formats: Solar and Meteorological 

Surface Observation Network (SAMSON) or Hourly US Weather Observations (HUSWO). These data 

sets contain data for 1961-1990 and 1990-1995, respectively. More recent data are stored in the 

Integrated Surface Hourly (ISH) format available from the National Climatic Data Center (NCDC). The 
Mr. Robert Kelley March 31, 2011 

EPA Contract No. EP-D-05-096, WA No. 5-16 Page 4 of 13 

data can be requested or retrieved from CD in either ISH-abbreviated or ISH-floating format. Since the 

ISH format is not processed by the version of CALMET available through the EPA Support Center for 

Regulatory Atmospheric Modeling (SCRAM) web site, the data were retrieved in the ISH floating format 

and converted to the SAMSON format using the program NCDC_CNV 

(http://www.rflee.com/RFL_Pages/Meteor.html).

The mixing height data was compiled using the Mixing Height Program taken from the EPA’s SCRAM 

website. The required inputs for the program are upper air data and hourly surface air data in either the 

SAMSON or HUSWO format. To be consistent with using the upper air data from the San Juan 

International Airport, the surface air data from this airport was also used for this program. For use with 

the Mixing Heights Program, the hourly surface data converted from ISH to the SAMSON format 

described above was used. 

The processed mixing height data and surface air data were input into CALMET to create the gridded 

meteorological data for use in CALPUFF. Per the BART modeling guidance (BART, 2006), Lambert 

Conformal Coordinates (LCC) were used in CALMET and CALPUFF. 

2.3 CALPUFF Input File 

The current “EPA Approved” version of CALPUFF is version 5.8, which was used for all of the 

CALPUFF modeling. The model includes a post processor called CALPOST. The model was 

downloaded from the SRC (ww.src.org) website. CALPUFF used the gridded meteorological data 

generated by CALMET, as described above. For the input parameters to CALPUFF and the postprocessor CALPOST, the Federal Land Managers' Air Quality Related Values Workgroup (FLAG) 

Phase I Report - Revised (FLAG 2010) was used as a reference. This document was finalized on October 

28, 2010. The regulatory default options for CALPUFF were followed, but the regulatory default 

check must be switched off because it erroneously expects all minimum turbulence velocities (SVMIN) to 

be 0.5 m/s, whereas it should also allow the default value of 0.37 m/s over water to be used. The 

determination of stack parameters and modeled emissions rates is discussed below. 

The background ammonia conditions used are found in the FLAG Phase I Report - Revised (FLAG 

2010). As the document suggests, we used a background ammonia concentration of 0.5 ppb for forests. 

The background ozone conditions were calculated from the EPA’s Clean Air Status and Trends Network 

(CASTNET, http://www.epa.gov/castnet/data.html). The data provided by CASTNET is the hourly 

ozone concentrations at Lind Point in the Virgin Islands National Park. Since recent ozone data 
Mr. Robert Kelley March 31, 2011 

EPA Contract No. EP-D-05-096, WA No. 5-16 Page 5 of 13 

corresponding to modeled years was not available from CASTNET, hourly values were averaged over 

each month of 2001 to produce a monthly value for use in each modeled year. Table 2 provides the 

background ozone concentrations used in the evaluation. 

As indicated in Figure 3, the Federal Land Manager (FLM) has developed a receptor set that outlines the 

Virgin Island Class I area. Since this receptor grid does not allow for examination of single source 

contributions, MACTEC instead post-processed an additional receptor located at the IMPROVE monitor 

site. This allowed MACTEC to calculate source contributions, as well as create data which is directly 

comparable to the IMPROVE monitor. The FLM grid was also run through CALPUFF in case the data 

were needed, however the receptors were not post-processed with CALPOST. The FLM receptor set was 

downloaded from the National Park Services (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 3 shows the FLM receptors. 

Figure 3: Location of FLM Receptors

2020

2022

2024

2026

2028

2030

2032

2034

2036

2038

293 298 303 308 313 318

UTM Northing (km)

UTM Easting (km

Receptors
Mr. Robert Kelley March 31, 2011 

EPA Contract No. EP-D-05-096, WA No. 5-16 Page 6 of 13 

2.4 CALPOST Input File 

The CALPOST post-processor is used to perform visibility calculations based on the concentration and 

visibility files created by the CALPUFF run. The input requires a selection of the type of visibility 

calculations to be used by the processor. The FLAG Phase I Report (2010) was used to determine the 

method of calculating visibility effects of the modeled pollutants. Method 6 in the model was selected in 

the model as the appropriate way to calculate visibility impacts. Method 6 uses monthly relative humidity 

(RH) adjustment factors applied to observed and modeled large and small particle to calculate the 

visibility effects of the speciated emissions. 

The algorithm used to calculate the changes in visibility changed between the 2000 and 2010 editions of 

the FLAG Phase I Report. Now, the total sulfate, nitrate and organic carbon compound concentrations 

are each split into two fractions, representing small and large size distributions of those components. The 

organic mass concentration used in this new algorithm has increased, sea salt (important for coastal 

locations) was added into the calculation, and site-specific Rayleigh scattering is used. The small and 

large particles, along with the sea salt concentration, were given relative humidity (RH) adjustment 

factors which are site-specific. The equation below shows the new equation for calculating beta 

extinction. 

The current EPA-approved versions of CALPUFF and CALPOST are unable to properly calculate beta 

extinction. Therefore a spreadsheet that uses the output from the CALPOST model was developed to 

extract the necessary model results and apply the correct beta extinction calculation. 

The background concentrations for (NH4)2SO4, NH4NO3, organic matter (OM), elemental carbon (EC), 

Soil, coarse mass (CM), and Sea Salt, as well as the Rayleigh scattering (bRay) are provided in the FLAG 

(2010) document for the Virgin Islands National Park. 

[ ] [ ]

[ ] [ ]

[ ] [ ]

[ ]

[ ]

[ ]

[ ]

0.33 [ ] NO (ppb)

RayleighRayleigh Rayleigh ScatteringScattering Scattering (Site Specific)Specific) Specific)

1.7 f (RH) Sea SaltSea Salt

2.8 Small Organic Organic Mass 6.1 Large Organic Organic Mass

2.4 f(RH) Small Nitrate Nitrate 5.1 f(RH) Large Nitrate Nitrate

2.2 f(RH) Small Sulfate Sulfate 4.8 f(RH) Large Sulfate Sulfate

2

SS

S L

S L

×+

+

×+

×+ ×

×+

×+

×+ ×+

××+ ××+

≈ × × + × ×

Coarse Mass

SoilFine

Elemental Carbon

bext

6.0

1

10
Mr. Robert Kelley March 31, 2011 

EPA Contract No. EP-D-05-096, WA No. 5-16 Page 7 of 13 

The monthly RH factors for each species as well as background concentrations for each of the pollutants 

are provided by the aforementioned FLAG Phase I Report (2010). The monthly RH adjustment factors are 

shown in Table 3 and the monthly background concentrations are shown in Table 4. 

2.5 Modeled Sources

MACTEC developed a list of thirty two sources for use in the model. Individual sources were 

selected to include the sources specified in the Work Plan. Table 5 provides a summary of the 

grouping of sources used in the model, and modeled emission rates for each source. The sources 

in each group are explained in more detail in the discussion below. The spreadsheets of calculate 

emission rate calculations are provided in Appendix A. 

Group 1 - St. Croix – Hovensa Point Sources:

Sources in this category were selected from Table 6-4 of the AEG Anguilla Power Renewable 

Energy Power Generation Project. This group contains seven sources (6 of the largest sources 

and 1 aggregate of the remaining sources), representing a total of approximately 75% of St. 

Croix’s total emissions. Since 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, SO2, or 

NOx. St. Croix sources were split between Groups 1 and 6, with Group 1 representing only the 

Hovensa refinery, and Group 6 representing all other St. Croix sources. 

Group 2 – Actual St. John Point Sources:

Sources in this category represent the actual point sources provided to MACTEC by Bob Kelly of 

EPA Region 2 in the spreadsheet St. John – Emissions Calculations.xls. The spreadsheet has 

been incorporated into the emissions calculations presented in Appendix A. Stack parameters for 

these sources have been estimated by MACTEC using parameters for generic generators, since no 

such information was presented with the emissions calculations. This category contains five (5) 

sources. 

Group 3 – Aggregate St. John Marine Sources:

Marine sources at St. John include all Ferry, Cruise Ship, and Cargo Ship emissions specified in 

St. John – Emissions Calculations.xls. As a conservative assumption, all three types of marine 

sources were modeled as point sources located at the Cruz Bay docks, rather than spreading the 
Mr. Robert Kelley March 31, 2011 

EPA Contract No. EP-D-05-096, WA No. 5-16 Page 8 of 13 

emissions over a greater area. The three different types of ships are represented with different 

stack parameters obtained from typical cruise ship data specifications. This group is not modeled 

simultaneously with Group 3a. 

Group 3a – Aggregate St. John Marine Sources with Emission Reductions:

This is an alternative set of emission rates for the marine sources at St. John. The source 

parameters are identical to Group 3, but emission rates have been reduced by 85% for PM and 

SO2, and 80% for NOx. This is not modeled simultaneously with Group 3, and is used to 

examine the benefits of emissions reductions to the marine sources. 

Group 4 – Sample Puerto Rico Sources:

Emissions and stack location are based on the AES Puerto Rico, L.P. 454 MW coal fired power 

plant in Guayama, Puerto Rico. The stack parameters are based on a similarly sized coal-fired 

boiler. 

Group 5 - Actual St. Thomas Sources:

Emissions are based on the Virgin Islands Water and Power Authority (VIWAPA) – Unit 23, at 

Krum Bay. It is a 39 MW turbine that burns no. 2 distillate fuel oil. The stack parameters are 

based on an engineering estimate for a similarly sized turbine. 

Group 6 – Other St. Croix Sources:

Sources in this category are from Table 6-4 of the AEG Anguilla Power Renewable Energy 

Power Generation Project. This consists of eight total sources (seven actual and one aggregated 

source), representing all St. Croix emissions except for those included in Group 1 (from 

Hovensa). The project details over 170 separate point sources. To reduce model run times due to 

the extremely high number of small point sources on St. Croix, emissions from the remaining 

sources were modeled here as a single point source. The location and stack parameters were 

conservatively represented by placing the source in the same location as the largest emitter of 

PM10 on St. Croix, the Hovensa wet scrubber, which was modeled in Group 1. The stack 

parameters from the wet scrubber were also used so an identical plume would result, yielding an 

even more conservative modeled impact. The total emissions from the non-Hovensa sources 

represented in this group comprise approximately 25% of the total emissions from St. Croix. 
Mr. Robert Kelley March 31, 2011 

EPA Contract No. EP-D-05-096, WA No. 5-16 Page 9 of 13 

Group 7 – Aggregate British Virgin Islands (BVI) Sources:

This category represents emissions from total oil usage on the BVI. The oil usage data was 

selected from the Central Intelligence Agency (CIA) World Factbook (1000 bbl/day). The 

Department of Energy (DOE) website indicates that residual oil is not consumed in significant 

quantity in the BVIs, so only a distillate emission factor was estimated. The 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 America and the Caribbean Sulphur Levels in 

Diesel Fuel, UNEP). 

MACTEC created an area source representative of the island of Tortola. Tortola is the closest of 

the BVIs to St. John. The area source represents the largest city on Tortola, Road Town. It is 

represented as a 2.5 km2

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. The emission factors 

used were taken from AP-42 Chapter 11.9, Table 11.9-1 for overburden. Section 13.2.3, “Heavy 

Construction,” advises using this factor for general land clearing. The 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:

The modeled area source represents fugitive dust emissions from roadways on St. John. The 

emission rates were from the spreadsheet St. John – Emissions Calculations.xls. Paved roads are 

responsible for 32.7 Tons per Year of particulate matter emissions on St. Johns, while unpaved 

roads produce 99.4 Tons per Year. The area modeled is a 5km x 10.4km rectangular region, 

representing an area equal to the 52 km2

land area of St. John. 

Group 10 – Aggregate St. John Burning:

The modeled area source represents all sources of fires on St. John, including open burning, forest 

fires, and structure fires. The emission rates were from the spreadsheet St. John – Emissions 

Calculations.xls. The area is conservatively modeled as 3km by 3km square region, located at 

Cruz Bay, St. John. 
Mr. Robert Kelley March 31, 2011 

EPA Contract No. EP-D-05-096, WA No. 5-16 Page 10 of 13 

Group 11 – St. John Residential Boilers:

The modeled area source represents emissions from residential boiler usage on St. John. The 

emission rates were from the spreadsheet St. John – Emissions Calculations.xls. The area is 

conservatively modeled as 3km by 3km square region, located at Cruz Bay, St. John. 

Group 12 – St. John Miscellaneous Industrial Processes:

The modeled area source represents emissions from other industrial sources on St. John. There 

are two sources represented by Group 12. The 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. The 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 modeled area source represents motor vehicle emissions on St. John. The emission rates 

were provided by an e-mail from Bob Kelly at EPA Region 2. The area modeled is a 5km x 

10.4km rectangular region, representing an area equal to the 52 km2

land area of St. John. 
Mr. Robert Kelley March 31, 2011 

EPA Contract No. EP-D-05-096, WA No. 5-16 Page 11 of 13 

Chapter 3: Model Results and Analysis 

Modeling results are presented in Tables 6 through 10. Monitoring data from the Interagency Monitoring 

of Protected Visual Environments (IMPROVE) network is also presented for comparison (Table 11), 

though the IMPROVE monitoring network only records data every three days and only 3 years of 

monitoring data are available. 

Model results tables present the following information: 

o BEXT (Source) – Beta Extinction coefficient from modeled sources 

o BEXT (BKG) – Beta Extinction coefficient from modeled background (Modeled 

background values include all Sea Salt and Rayleigh Scattering, as well as fractions of 

Organic Matter, Elemental Carbon, and Coarse Mass.) 

o BEXT (Total) – Beta Extinction coefficient from modeled sources + modeled 

background 

o Percent CHANGE – Percent Change in visibility from background 

o BEXT SO4 – Beta Extinction coefficient from modeled SO4

o BEXT NO3 – Beta Extinction coefficient from modeled NO3

o BEXT OC – Beta Extinction coefficient from modeled organic carbon (not explicitly 

modeled) 

o BEXT EC – Beta Extinction coefficient from modeled elemental carbon (assumed 

emission rate to be 10% of total particulate matter) 

o BEXT PMC – Beta Extinction coefficient from modeled coarse particulate matter 

(modeled as PMF) 

o BEXT PMF – Beta Extinction coefficient from modeled fine particulate matter 

o BEXT NO2 – Beta Extinction coefficient from modeled NO2

o dv (total) – Deciveiw haze index from modeled emissions + modeled background 

o dv (bkg) – Deciveiw haze index from modeled background 

o ∆dv – Change in Deciveiw haze index of total – background modeled emissions 
Mr. Robert Kelley March 31, 2011 

EPA Contract No. EP-D-05-096, WA No. 5-16 Page 12 of 13 

IMPROVE Monitoring data tables present the following information: 

o BEXT (Source) – Calculated Beta Extinction coefficient (total IMPROVE monitor value 

– modeled annual average background) 

o BEXT (BKG) – Background Beta Extinction coefficient (from modeled annual 

background) 

o BEXT (Total) – Beta Extinction coefficient recorded at IMPROVE monitor 

o BEXT SO4 – Beta Extinction coefficient from IMPROVE monitor SO4

o BEXT NO3 – Beta Extinction coefficient from IMPROVE monitor NO3

o BEXT OC – Beta Extinction coefficient from IMPROVE monitor organic carbon 

o BEXT EC – Beta Extinction coefficient from IMPROVE monitor elemental carbon 

o BEXT PMC – Beta Extinction coefficient from IMPROVE monitor coarse particulate 

matter 

o BEXT PMF – Beta Extinction coefficient from IMPROVE monitor fine particulate 

matter 

o BEXT NO2 – Beta Extinction coefficient from IMPROVE monitor NO2

o dv (total) – Deciveiw haze index from monitor emissions + modeled background 

o dv (bkg) – Deciveiw haze index from modeled background 

o ∆dv – Change in Deciveiw haze index of (total monitored – background modeled 

emissions) 

Both the model results and monitoring data are driven by Particulate Matter (modeled as PMF) extinction. 

The effects of PM (PMC + PMF from monitor), as well as elemental carbon (EC) are very similar 

between monitored and modeled values. The SO4 and NO3 are considerably less in the modeled data, 

but generally within an order of magnitude of the monitored data. The high visibility change at the 

monitor also seem to reflect days with higher than average sea salt concentrations. 
Mr. Robert Kelley March 31, 2011 

EPA Contract No. EP-D-05-096, WA No. 5-16 Page 13 of 13 

References 

BART, 2006. Visibility Improvement State and Tribal Association of the Southeast (VISTAS), 

2006: Protocol for the Application of the CALPUFF Model for Analyses of Best Available 

Retrofit Technology (BART). Revision 3.1. 

FLAG, 2010. Federal Land Managers’ Air Quality Related Values Workgroup (FLAG). Phase I 

Report – Revised (Flag 2010). U.S. Forest Service, National Park Service, U.S. Fish and 

Wildlife Service.
Tables
Table 1: Availability of Meteorological Data

2001 2002 2003 2004 2005 2006 2007 2008 2009 2010

X X X X X X X X X X

11641 San Juan L M Marin Airport X X X X X X X X X X

11640 Charlotte Amalie Airport X X X X X X X X X X

11641 San Juan L M Marin Airport X X X X X X X X X X

CHAV3 Charlotte Amalie, VI X X X X X X

LTBV3 Lime Tree Bay, VI X X X X X X

SRBV3 Salt River Bay, St. Croix , VI X X X

ESPP4 Esperanza, PR X X

670198 Christiansted Airport X X X X

668812 San Juan L M Marin Airport X X X X X X X X X X

Precipitation Data Files

Elevation Data and Land Use Data1

Upper Air Data

Surface Meteorological Data

Overwater Data Files
Table 2: Background 

Ozone Concentrations

2001 2002 2003 2004

January 23.4 34.5 32.6 30.2

February 13.9 34.6 32.4 27.0

March 25.2 33.4 28.8 29.2

April 29.8 34.3 31.4 31.8

May 18.9 31.4 28.9 26.4

June 20.9 24.9 25.6 23.8

July 23.4 24.8 26.4 24.9

August 20.3 24.6 23.5 22.8

September 20.1 31.9 27.1 26.4

October 23.4 25.4 23.5 24.1

November 36.0 29.1 28.0 31.0

December 31.9 33.8 34.1 33.2
Table 3: Relative Humidity Adjustment Factors by Month for the Virgin Islands National Park

January February March April May June July August September October November December

FS(RH) 2.41 2.36 2.27 2.39 2.44 2.40 2.43 2.57 2.58 2.63 2.68 2.54

FL(RH) 2.04 2.00 1.94 2.03 2.06 2.04 2.05 2.14 2.14 2.18 2.20 2.12

Fs s(RH) 3.17 3.12 3.04 3.15 3.19 3.17 3.18 3.31 3.30 3.36 3.39 3.28
Table 4: Background Concentrations for the Virgin Islands National Park

0.18 0.07 0.21 0.01 0.12 1.53 0.26 11

bRay 

M m-1

Sea Salt 

μg/m3

(NH4)2SO4 

μg/m3

NH4NO3 

μg/m3

OM 

μg/m3

EC 

μg/m3

Soil 

μg/m3

CM 

μg/m3
Table 5: Modeled Sources and Emission Rates

Group Source Group Model ID Type Model # Location Description SO2 NOx PMF EC*

# g/s g/s g/s g/s

G3413 Point 1 St. Croix Hovensa Refinery - GT#13 (Gas Turbine) 3.2 4.7 5.2 5.20E-02

7051 Point 2 St. Croix Hovensa Refinery - Wet Scrubber 27 13 15 1.50E-01

B1155 Point 3 St. Croix Hovensa Refinery - Nos. 3 and 5 Boilers 54 16 4.3 4.30E-02

B33012 Point 4 St. Croix Hovensa Refinery - Nos. 6 and 7 Boilers 54 16 4.3 4.30E-02

H42012 Point 5 St. Croix Hovensa Refinery - 3Vac 43 29 3 3.00E-02

G3408 Point 6 St. Croix Hovensa Refinery - GT#8 (Gas Turbine) 6.5 26 0.44 4.40E-03

HOVENS Point 7 St. Croix St. Croix - Hovensa Aggregated Sources 376.8 624.7 34.7 3.47E-01

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 1.15E-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

WAPASTJO Point 12 St. John VIWAPA St. John - Generator 2.05E-02 9.61E-03 1.11E-03 1.11E-05

FERRYS Point 13 St. John All Ferries Servicing St. John - at CB Docks 2.45 8.5 2.07E-01 2.07E-03

CRUISE Point 14 St. John All Cruise Ships Servicing St. John - at CB 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 CB Docks 1.41E-02 2.76E-02 1.73E-03 1.73E-05

FERRYS Point 13 St. John All Ferries Servicing St. John - Controlled 0.3675 1.7 3.11E-02 3.11E-04

CRUISE Point 14 St. John All Cruise Ships Servicing St. John - Controlled 3.63E-02 1.25E-01 5.65E-03 5.65E-05

CARGO Point 15 St. John All Cargo Ships Servicing St. John - Controlled 2.12E-03 5.52E-03 2.59E-04 2.59E-06

4

Sample Puerto 

Rico Sources PRPOWE 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 6.56 5.29 2.85 2.85E-02

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 Group Boiler 110 68 9.8 9.80E-02

WPSX10 Point 20 St. Croix VIWAPA - Boiler 11.34 10.33 1.28 1.28E-02

WPSX11 Point 21 St. Croix VIWAPA - Boiler 20.54 18.65 2.32 2.32E-02

WPSX16 Point 22 St. Croix VIWAPA - Combustion Turbine 8.54 15.93 1.53 1.53E-02

WPSX17 Point 23 St. Croix VIWAPA - Combustion Turbine 8.47 13.14 1.51 1.51E-02

WPSX19 Point 24 St. Croix VIWAPA - Combustion Turbine 8 12.98 2.27 2.27E-02

WPSX20 Point 25 St. Croix VIWAPA - Combustion Turbine 8.09 12.98 2.27 2.27E-02

7

Aggregate BVI 

Sources

TORTAR Area 1 Tortola Tortola - BVI Total Combustion of Oil as Area Source 15.65 4.4 7.28E-01 7.28E-03

8

Simulated BVI 

Sources

TORTBU Area 2 Tortola Tortola - Open Burning - 0.416 1.77 1.77E-02

9 St. John Roads SJROAD Area 3 St. John St. John - Paved and Unpaved Road Fugitive Emissions - - 3.79964 3.80E-02

10 Aggregate St. 

John Burning SJBURN Area 4 St. John St. John - All Open Burning, Forest Fires Etc. 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 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) - - 0.317673 3.18E-03

13 St. John Vehicle SJVEH Area 7 St. John St. John - On Road Motor Vehicle Emissions 4.63E-02 7.20E-01 0.0211224 2.11E-04

Original Modeled Rates for Marine Sources

Alternative Scenario - 85% PM and SO2 Reductions, 80% NOx Reductions for St. John Marine Sources

*Assumed Elemental Carbon is 1% of PM Emissions

3

Aggregate St. 

John Marine - 

w/Reductions

6

Other St. Croix 

Sources

1

St. Croix - 

Hovensa 

Sources

2

Actual St. John 

Point Sources

3

Aggregate St. 

John Marine 

Sources
Table 6: 2009 Modeled Full Year Average

Group Source Group Type

#

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

All 2009 - All Available Sources All 12.52 15.66 28.19 79.89 0.59 0.07 -- 1.08 -- 10.79 -- 10.12 4.49 5.63

All 2009 - All Available Sources - Alt. All 12.51 15.66 28.18 79.81 0.58 0.07 -- 1.08 -- 10.78 -- 10.12 4.49 5.63

1 St. Croix - Hovensa Sources Point 0.50 15.66 16.17 3.21 0.40 0.05 -- 5.0E-03 -- 0.05 -- 4.75 4.49 0.27

2 Actual St. John Point Sources Point 1.4E-04 15.66 15.66 8.9E-04 4.3E-05 -- -- 1.4E-05 -- 8.2E-05 -- 4.49 4.49 0.00

3 Aggregate St. John Marine Sources Point 0.01 15.66 15.68 0.09 4.0E-03 6.4E-04 -- 8.2E-04 -- 8.2E-03 -- 4.49 4.49 0.01

3a

Aggregate St. John Marine - 

w/Reductions Point 2.1E-03 15.66 15.66 0.01 5.9E-04 1.5E-04 -- 1.2E-04 -- 1.2E-03 -- 4.49 4.49 0.00

4 Sample Puerto Rico Sources Point 1.9E-04 15.66 15.66 1.2E-03 5.6E-05 1.4E-05 -- 1.1E-05 -- 1.1E-04 -- 4.49 4.49 0.00

5 Actual St. Thomas Sources Point 5.0E-03 15.66 15.67 0.03 2.5E-03 2.1E-04 -- 2.1E-04 -- 2.1E-03 -- 4.49 4.49 0.00

6 Other St. Croix Sources Point 0.15 15.66 15.81 0.93 0.11 0.01 -- 1.6E-03 -- 0.02 -- 4.57 4.49 0.09

7 Aggregate BVI Sources Area 0.08 15.66 15.74 0.49 0.05 1.3E-03 -- 2.2E-03 -- 0.02 -- 4.54 4.49 0.05

8 Simulated BVI Sources Area 0.03 15.66 15.69 0.18 -- 5.6E-05 -- 2.5E-03 -- 0.03 -- 4.50 4.49 0.02

9 St. John Roads Area 8.29 15.66 23.96 52.89 -- -- -- 0.75 -- 7.54 -- 8.63 4.49 4.14

10 Aggregate St. John Burning Area 0.24 15.66 15.90 1.54 1.8E-04 -- -- 0.02 -- 0.22 -- 4.64 4.49 0.15

11 St. Johns Boilers Area 4.1E-03 15.66 15.67 0.03 7.1E-05 2.6E-04 -- 2.0E-04 -- 3.6E-03 -- 4.49 4.49 0.00

12 St. John Misc. Industrial Area 3.14 15.66 18.81 20.06 -- -- -- 0.29 -- 2.86 -- 6.26 4.49 1.77

13 St. John Motor Vehicle Emissions Area 0.06 15.66 15.72 0.37 7.3E-03 4.1E-03 -- 4.2E-03 -- 0.04 -- 4.52 4.49 0.04

Original Modeled Rates for Marine Sources

Alternative Scenario - 85% PM and SO2 Reductions, 80% NOx Reductions for Marine Sources

2009 Modeled Full Year Average
Table 7: 2009 Modeled Best 20% Days Average

Group Source Group Type

#

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

All All Available Sources All 6.72 15.62 22.34 43.03 0.07 3.1E-03 -- 0.60 -- 6.04 -- 8.03 4.46 3.57

All 2009 - All Available Sources - Alt. All 6.72 15.62 22.34 43.03 0.07 3.1E-03 -- 0.60 -- 6.04 -- 8.03 4.46 3.57

1 St. Croix - Hovensa Sources Point -- -- -- -- -- -- -- -- -- -- -- -- -- --

2 Actual St. John Point Sources Point -- -- -- -- -- -- -- -- -- -- -- -- -- --

3 Aggregate St. John Marine Sources Point -- -- -- -- -- -- -- -- -- -- -- -- -- --

3a

Aggregate St. John Marine - 

w/Reductions Point -- -- -- -- -- -- -- -- -- -- -- -- -- --

4 Sample Puerto Rico Sources Point -- -- -- -- -- -- -- -- -- -- -- -- -- --

5 Actual St. Thomas Sources Point -- -- -- -- -- -- -- -- -- -- -- -- -- --

6 Other St. Croix Sources Point -- -- -- -- -- -- -- -- -- -- -- -- -- --

7 Aggregate BVI Sources Area -- -- -- -- -- -- -- -- -- -- -- -- -- --

8 Simulated BVI Sources Area -- -- -- -- -- -- -- -- -- -- -- -- -- --

9 St. John Roads Area 4.71 15.61 20.32 30.15 -- -- -- 0.43 -- 4.28 -- 7.08 4.46 2.63

10 Aggregate St. John Burning Area 0.11 14.98 15.08 0.69 -- -- -- 9.8E-03 -- 0.10 -- 4.34 4.27 0.07

11 St. Johns Boilers Area 1.7E-03 15.10 15.10 0.01 -- -- -- -- -- 1.7E-03 -- 4.35 4.35 0.00

12 St. John Misc. Industrial Area 1.48 15.63 17.11 9.49 -- -- -- 0.13 -- 1.35 -- 5.37 4.46 0.91

13 St. John Motor Vehicle Emissions Area 0.03 15.62 15.65 0.19 2.0E-03 9.6E-04 -- 2.4E-03 -- 0.02 -- 4.48 4.46 0.02

Original Modeled Rates for Marine Sources

Alternative Scenario - 85% PM and SO2 Reductions, 80% NOx Reductions for Marine Sources

2009 Modeled Best 20% Days Average
Table 8: 2009 Modeled Worst 20% Days Average

Group Source Group Type

#

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

All All Available Sources All 23.46 15.74 39.22 149.17 2.54 0.32 -- 1.87 -- 18.72 -- 13.48 4.54 8.95

All 2009 - All Available Sources - Alt. All 23.41 15.74 39.16 148.82 2.53 0.32 -- 1.87 -- 18.69 -- 13.47 4.54 8.93

1 St. Croix - Hovensa Sources Point 2.51 14.84 17.37 16.07 1.99 0.25 -- 0.02 -- 0.25 -- 5.59 4.26 1.33

2 Actual St. John Point Sources Point 6.9E-04 3.22 3.22 4.4E-03 2.1E-04 -- -- 6.8E-05 -- 4.1E-04 -- 0.92 0.92 0.00

3 Aggregate St. John Marine Sources Point 0.07 5.59 5.66 0.44 0.02 3.2E-03 -- 4.1E-03 -- 0.04 -- 1.65 1.60 0.04

3a

Aggregate St. John Marine - 

w/Reductions Point 0.01 3.87 3.88 0.07 2.9E-03 7.5E-04 -- 6.0E-04 -- 6.2E-03 -- 1.12 1.11 0.01

4 Sample Puerto Rico Sources Point 9.4E-04 0.43 0.44 5.9E-03 2.8E-04 6.8E-05 -- 5.5E-05 -- 5.3E-04 -- 0.13 0.13 0.00

5 Actual St. Thomas Sources Point 0.02 3.87 3.89 0.16 0.01 1.1E-03 -- 1.0E-03 -- 0.01 -- 1.13 1.11 0.02

6 Other St. Croix Sources Point 0.73 15.70 16.43 4.65 0.57 0.06 -- 8.2E-03 -- 0.08 -- 4.95 4.51 0.44

7 Aggregate BVI Sources Area 0.36 15.64 16.00 2.30 0.24 6.2E-03 -- 0.01 -- 0.10 -- 4.70 4.47 0.23

8 Simulated BVI Sources Area 0.13 15.64 15.77 0.82 -- 2.5E-04 -- 0.01 -- 0.12 -- 4.55 4.47 0.08

9 St. John Roads Area 14.64 15.74 30.38 92.97 -- -- -- 1.33 -- 13.31 -- 11.08 4.54 6.54

10 Aggregate St. John Burning Area 0.52 15.69 16.21 3.31 6.9E-04 -- -- 0.05 -- 0.47 -- 4.83 4.50 0.33

11 St. Johns Boilers Area 0.01 15.69 15.70 0.06 3.3E-04 1.2E-03 -- 9.9E-04 -- 7.6E-03 -- 4.51 4.50 0.01

12 St. John Misc. Industrial Area 6.76 15.69 22.45 43.04 -- -- -- 0.61 -- 6.14 -- 8.03 4.50 3.53

13 St. John Motor Vehicle Emissions Area 0.11 15.75 15.86 0.70 0.02 0.01 -- 7.4E-03 -- 0.07 -- 4.61 4.54 0.07

Original Modeled Rates for Marine Sources

Alternative Scenario - 85% PM and SO2 Reductions, 80% NOx Reductions for Marine Sources

2009 Modeled Worst 20% Days Average
Table 9: Annual Modeled Data 2007-2010

Group Source Group Type

#

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

AVG 2007 All Sources - Average 15.39 15.66 31.07 98.30 1.12 0.14 -- 1.29 -- 12.86 -- 10.94 4.49 6.46

B20% 2007 All Sources - Best 20% Days 5.96 15.65 21.61 38.13 0.10 3.5E-03 -- 0.53 -- 5.33 -- 7.69 4.48 3.22

W20% 2007 All Sources - Worst 20% Days 30.12 15.68 45.83 192.33 4.50 0.62 -- 2.27 -- 22.73 -- 15.04 4.50 10.54

AVG 2008 All Sources - Average 11.67 15.66 27.33 74.45 0.36 0.04 -- 1.02 -- 10.25 -- 9.88 4.49 5.39

B20% 2008 All Sources - Best 20% Days 6.40 15.62 22.03 41.01 0.09 3.7E-03 -- 0.57 -- 5.73 -- 7.89 4.46 3.43

W20% 2008 All Sources - Worst 20% Days 20.35 15.70 36.06 129.60 1.41 0.17 -- 1.71 -- 17.06 -- 12.72 4.51 8.21

AVG 2009 All Sources - Average 12.52 15.66 28.19 79.89 0.59 0.07 -- 1.08 -- 10.79 -- 10.12 4.49 5.63

B20% 2009 All Sources - Best 20% Days 6.72 15.62 22.34 43.03 0.07 3.1E-03 -- 0.60 -- 6.04 -- 8.03 4.46 3.57

W20% 2009 All Sources - Worst 20% Days 23.46 15.74 39.22 149.17 2.54 0.32 -- 1.87 -- 18.72 -- 13.48 4.54 8.95

AVG 2010 All Sources - Average 10.88 15.66 26.55 69.45 0.79 0.11 -- 0.91 -- 9.08 -- 9.62 4.49 5.13

B20% 2010 All Sources - Best 20% Days 7.29 15.59 22.88 46.79 0.02 3.3E-03 -- 0.66 -- 6.61 -- 8.28 4.44 3.84

W20% 2010 All Sources - Worst 20% Days 18.02 15.71 33.76 114.77 3.47 0.49 -- 1.28 -- 12.78 -- 11.93 4.52 7.41

Annual Modeled Data 2007-2010

All

All

All

All
Table 10: Modeled Data 2009 Alternative Scenario (Controlled St. John Marine Sources)

Group Source Group Type

#

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

AVG 2009 All Sources - Average 12.51 15.66 28.18 79.81 0.58 0.07 -- 1.08 -- 10.78 -- 10.12 4.49 5.63

B20% 2009 All Sources - Best 20% Days 6.72 15.62 22.34 43.03 0.07 3.1E-03 -- 0.60 -- 6.04 -- 8.03 4.46 3.57

W20% 2009 All Sources - Worst 20% Days 23.41 15.74 39.16 148.82 2.53 0.32 -- 1.87 -- 18.69 -- 13.47 4.54 8.93

Alternative Scenario - 85% PM and SO2 Reductions, 80% NOx Reductions for Marine Sources

Modeled Data 2009 Alternative Scenario (Controlled St. John Marine Sources)

All
Table 11: 2007-2009 IMPROVE Monitor Data

Group Source Group Type

#

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

AVG 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

B20% 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

W20% 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

AVG 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

B20% 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

W20% 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

AVG 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

B20% 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

W20% 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

* Background [BEXT (BKG)] is assumed to be the same as average modeled background. All values other than BEXT (Total) in this table rely on the assumed background.

2007-2009 IMPROVE Monitor Data

N/A

N/A

N/A
Appendix A – Emission Calculations
St. Croix Point Source Totals

Source Name PM10 PM2.5 SO2 NOx EC

(g/s) (lb/hr) (g/s) (lb/hr) (g/s) (lb/hr) (g/s) (lb/hr) (g/s)

St. Croix - Total 9.06E+01 719.08 77.65 616.22 744.78 5,911.01 919.62 7,298.50 0.91

Hovensa - Total 66.46 527.42 54.97 436.27 563.69 4,473.94 729.58 5,790.33 0.66

Hovensa - 3Vac 3.00E+00 23.84 1.76 13.93 43.04 341.58 28.77 228.32 0.03

Hovensa - 3&5 4.30E+00 34.08 2.40 19.07 53.53 424.83 15.70 124.62 0.04

Hovensa - 6&7 4.30E+00 34.08 2.40 19.07 53.53 424.83 16.26 129.03 0.04

Hovensa - GT#8 4.36E-01 3.46 0.44 3.46 6.50 51.60 25.99 206.30 0.00

Hovensa - WetScrub 1.46E+01 115.60 14.57 115.60 27.10 215.09 13.47 106.95 0.15

Hovensa - G3413 5.17E+00 41.04 5.17 41.04 3.20 25.37 4.73 37.50 0.05

Hovensa - Individuals Sum 3.18E+01 252.10 26.74 212.17 186.90 1,483.30 104.92 832.72 0.32

Hovensa - Aggregate 34.69 275.32 28.23 224.10 376.79 2,990.64 624.66 4,957.61 0.35

Other St. Croix Aggregate 2.43E+00 1.93E+01 2.43E+00 1.93E+01 5.21E+00 4.14E+01 3.76E+01 2.99E+02 2.43E-02

St. Croix Renaissance Only 9.75E+00 7.74E+01 9.75E+00 7.74E+01 1.11E+02 8.80E+02 6.84E+01 5.43E+02 9.75E-02

VIWAPA - WPSX10 1.29E+00 1.02E+01 1.03E+00 8.20E+00 1.13E+01 9.00E+01 1.03E+01 8.20E+01 1.29E-02

VIWAPA - WPSX11 2.32E+00 1.84E+01 1.85E+00 1.47E+01 2.05E+01 1.63E+02 1.87E+01 1.48E+02 2.32E-02

VIWAPA - WPSX16 1.53E+00 1.21E+01 1.53E+00 1.21E+01 8.54E+00 6.78E+01 1.59E+01 1.26E+02 1.53E-02

VIWAPA - WPSX17 1.51E+00 1.20E+01 1.51E+00 1.20E+01 8.47E+00 6.72E+01 1.31E+01 1.04E+02 1.51E-02

VIWAPA - WPSX19 2.27E+00 1.80E+01 2.27E+00 1.80E+01 8.00E+00 6.35E+01 1.30E+01 1.03E+02 2.27E-02

VIWAPA - WPSX20 2.27E+00 1.80E+01 2.27E+00 1.80E+01 8.09E+00 6.42E+01 1.30E+01 1.03E+02 2.27E-02

VIWAPA - Individuals Sum 1.12E+01 8.87E+01 1.05E+01 8.30E+01 6.50E+01 5.16E+02 8.40E+01 6.67E+02 1.12E-01

Reference:

AEG Anguilla Power - Table 6-4 of the AEG Anguilla Power Renewable Energy Power Generation Project
Major Category:Hotel

Minor Category:Caneel Bay Resort

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2103004000

Stationar

y Source 

Fuel 

Combusti

on

Commercial/ 

Institutional Distillate Oil

Total: Boilers 

and IC 

Engines

Region 2004

St. John 25,232 gallons of diesel fuel

FIPS State and 

County Code

FIPS 

State 

Code

FIPS County 

Code County Name County Type

Postal 

State 

Code

Through

put

Throughput 

Unit 

Numerator

Pollutant 

Code

Factor 

Numeric 

Value

Factor Unit 

Numerator

Factor Unit 

Denominator

Emission 

Numeric Value

Emission Unit 

Numerator

Emission Unit 

Denominator

78020 78 020 St. John County VI 25.23 103 Gallons PM25-FIL 0.83 LB 103 Gallons 0.01047128 TON YEAR

78020 78 020 St. John County VI 25.23 103 Gallons PM10-FIL 1.08 LB 103 Gallons 0.01362528 TON YEAR

78020 78 020 St. John County VI 25.23 103 Gallons PM-CON 1.3 LB 103 Gallons 0.0164008 TON YEAR

78020 78 020 St. John County VI 25.23 103 Gallons PM25-PRI 2.13 LB 103 Gallons 0.02687208 TON YEAR

78020 78 020 St. John County VI 25.23 103 Gallons PM10-PRI 2.38 LB 103 Gallons 0.03002608 TON YEAR

78020 78 020 St. John County VI 25.23 103 Gallons SO2 42.6 LB 103 Gallons 0.5374416 TON YEAR

78020 78 020 St. John County VI 25.23 103 Gallons NOX 20 LB 103 Gallons 0.25232 TON YEAR

78020 78 020 St. John County VI 25.23 103 Gallons VOC 0.34 LB 103 Gallons 0.00428944 TON YEAR

Modeled Emissions at Caneel Bay Resort

Pollutant 

Code

Emission 

Numeric Value

Emission Unit 

Numerator

Emission Unit 

Denominator

SO2 0.5374416 TON YEAR

NOX 0.25232 TON YEAR

PMF (=PM10) 0.03002608 TON YEAR

EC 0.000300261 TON YEAR

SO2 0.015460308 GRAM SECOND

NOX 0.007258361 GRAM SECOND

PMF (=PM10) 0.000863745 GRAM SECOND

EC 8.63745E-06 GRAM SECOND

Source Classification Code

Stationary Fuel Use

Notes: Caneel Bay Resort has two 725 kW CAT GENSET back-up diesel generators. In 

2004, these generators ran for 332 hours consuming 25,232 gallons of diesel fuel. There 

are no reported controls on these generators.

Source: Information acquired through a questionnaire prepared by E.H. Pechan and 

Associates, Inc. and sent to Alvin Nazario, Director of Facilities at Caneel Bay on 13 

Emissions Calculations for St. John

Source of Emission Factors: Roy Huntley, U.S. Environmental Protection Agency (Huntley.Roy@epamail.epa.gov) in consultation with the Eastern Regional Technical Advisory Committee (ERTAC), 

“state_comparison ERTAC SS_version7_4 Nov 23 2009.mdb [electronic file],” November 23, 2009.
Major Category: Hotel

Minor Category: Gallows Point Resort

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2103004000

Stationary 

Source 

Fuel 

Combusti

on

Commerci

al/ 

Institution

al 

Distillate 

Oil

Total: Boilers 

and IC 

Engines

2103007000

Stationary 

Source 

Fuel 

Combusti

on

Commerci

al/ 

Institution

al 

Liquefied 

Petroleum 

Gas (LPG)

Total: All 

Combustor 

Types

Region 2009

St. John 15 gallons of diesel fuel

St. John 2,672 gallons of propane

FIPS State 

and County 

Code

FIPS State 

Code

FIPS 

County 

Code

County 

Name County Type

Postal 

State 

Code Activity Description SCC

Through

put

Throughput 

Unit 

Numerator

Pollutant 

Code

Factor 

Numeric 

Value

Factor Unit 

Numerator

Factor Unit 

Denominator

Emission 

Numeric Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

78020 78 020 St. John County VI Back-up Power Generation 2103004000 0.015 103

 Gallons PM25-FIL 0.83 LB 103 Gallons 0.000006225 TON YEAR

78020 78 020 St. John County VI Back-up Power Generation 2103004000 0.015 103

 Gallons PM10-FIL 1.08 LB 103 Gallons 0.0000081 TON YEAR

78020 78 020 St. John County VI Back-up Power Generation 2103004000 0.015 103

 Gallons PM-CON 1.3 LB 103 Gallons 0.00000975 TON YEAR

78020 78 020 St. John County VI Back-up Power Generation 2103004000 0.015 103

 Gallons PM25-PRI 2.13 LB 103 Gallons 0.000015975 TON YEAR

78020 78 020 St. John County VI Back-up Power Generation 2103004000 0.015 103

 Gallons PM10-PRI 2.38 LB 103 Gallons 0.00001785 TON YEAR

78020 78 020 St. John County VI Back-up Power Generation 2103004000 0.015 103

 Gallons SO2 42.6 LB 103 Gallons 0.0003195 TON YEAR

78020 78 020 St. John County VI Back-up Power Generation 2103004000 0.015 103

 Gallons NOX 20 LB 103 Gallons 0.00015 TON YEAR

78020 78 020 St. John County VI Back-up Power Generation 2103004000 0.015 103

 Gallons VOC 0.34 LB 103 Gallons 0.00000255 TON YEAR

78020 78 020 St. John County VI Drying Laundry 2103007000 2.672 103

 Gallons PM25-FIL 0.01 LB 103 Gallons 0.00001336 TON YEAR

78020 78 020 St. John County VI Drying Laundry 2103007000 2.672 103

 Gallons PM10-FIL 0.02 LB 103 Gallons 0.00002672 TON YEAR

78020 78 020 St. John County VI Drying Laundry 2103007000 2.672 103

 Gallons PM-CON 0.03 LB 103 Gallons 0.00004008 TON YEAR

78020 78 020 St. John County VI Drying Laundry 2103007000 2.672 103

 Gallons PM25-PRI 0.04 LB 103 Gallons 0.00005344 TON YEAR

78020 78 020 St. John County VI Drying Laundry 2103007000 2.672 103

 Gallons PM10-PRI 0.05 LB 103 Gallons 0.0000668 TON YEAR

78020 78 020 St. John County VI Drying Laundry 2103007000 2.672 103

 Gallons SO2 0.06 LB 103 Gallons 0.00008016 TON YEAR

78020 78 020 St. John County VI Drying Laundry 2103007000 2.672 103

 Gallons NOX 14.23 LB 103 Gallons 0.01901128 TON YEAR

78020 78 020 St. John County VI Drying Laundry 2103007000 2.672 103

 Gallons VOC 0.52 LB 103 Gallons 0.00069472 TON YEAR

Modeled Emissions at Gallows Point Resort

Pollutant Code

Emission 

Numeric Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

SO2 0.00039966 TON YEAR

NOX 0.01916128 TON YEAR

PMF (=PM10) 0.00008465 TON YEAR

EC 3.9966E-06 TON YEAR

SO2 1.14968E-05 GRAM SECOND

NOX 0.000551203 GRAM SECOND

PMF (=PM10) 2.43508E-06 GRAM SECOND

EC 1.14968E-07 GRAM SECOND

Source Classification Codes

Stationary Fuel Use

Notes: Gallows Point Resort has one 4 kW CAT back-up diesel generators. In 2009, this generator ran 

for approximately 30 hours consuming 15 gallons of diesel fuel. There are no reported controls on this 

generator. The Resort also has two laundry dryers that consumed 2,672 gallons of propane in 2009.

Source: Information acquired through a questionnaire prepared by E.H. Pechan and Associates, Inc. 

and sent to Akhil Deshwal, General Manager at Gallows Point on 13 January 2010. Mr. Deshwal 

Emissions Calculations for St. John

Source of Emission Factors: Roy Huntley, U.S. Environmental Protection Agency (Huntley.Roy@epamail.epa.gov) in consultation with the Eastern Regional Technical Advisory Committee (ERTAC), “state_comparison ERTAC SS_version7_4 Nov 

23 2009.mdb [electronic file],” November 23, 2009.
Major Category: Condominiums

Minor Category: Grand Bay Resort

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2103004000

Stationary 

Source 

Fuel 

Combusti

on

Commerci

al/ 

Institution

al 

Distillate 

Oil

Total: Boilers 

and IC 

Engines

2103007000

Stationary 

Source 

Fuel 

Combusti

on

Commerci

al/ 

Institution

al 

Liquefied 

Petroleum 

Gas (LPG)

Total: All 

Combustor 

Types

Region 2009

St. John 7,600 gallons of diesel fuel

St. John 1,000 gallons of propane

FIPS State 

and County 

Code

FIPS State 

Code

FIPS 

County 

Code

County 

Name County Type

Postal 

State 

Code Activity Description SCC

Through

put

Throughput 

Unit Numerator

Pollutant 

Code

Factor 

Numeric 

Value

Factor Unit 

Numerator

Factor Unit 

Denominator

Emission 

Numeric Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

78020 78 020 St. John County VI Back-up Power Generation 2103004000 7.60 103

 Gallons PM25-FIL 0.83 LB 103 Gallons 0.003154 TON YEAR

78020 78 020 St. John County VI Back-up Power Generation 2103004000 7.60 103

 Gallons PM10-FIL 1.08 LB 103 Gallons 0.004104 TON YEAR

78020 78 020 St. John County VI Back-up Power Generation 2103004000 7.60 103

 Gallons PM-CON 1.3 LB 103 Gallons 0.00494 TON YEAR

78020 78 020 St. John County VI Back-up Power Generation 2103004000 7.60 103

 Gallons PM25-PRI 2.13 LB 103 Gallons 0.008094 TON YEAR

78020 78 020 St. John County VI Back-up Power Generation 2103004000 7.60 103

 Gallons PM10-PRI 2.38 LB 103 Gallons 0.009044 TON YEAR

78020 78 020 St. John County VI Back-up Power Generation 2103004000 7.60 103

 Gallons SO2 42.6 LB 103 Gallons 0.16188 TON YEAR

78020 78 020 St. John County VI Back-up Power Generation 2103004000 7.60 103

 Gallons NOX 20 LB 103 Gallons 0.076 TON YEAR

78020 78 020 St. John County VI Back-up Power Generation 2103004000 7.60 103

 Gallons VOC 0.34 LB 103 Gallons 0.001292 TON YEAR

78020 78 020 St. John County VI Pool Heating 2103007000 1.00 103

 Gallons PM25-FIL 0.01 LB 103 Gallons 0.000005 TON YEAR

78020 78 020 St. John County VI Pool Heating 2103007000 1.00 103

 Gallons PM10-FIL 0.02 LB 103 Gallons 0.00001 TON YEAR

78020 78 020 St. John County VI Pool Heating 2103007000 1.00 103

 Gallons PM-CON 0.03 LB 103 Gallons 0.000015 TON YEAR

78020 78 020 St. John County VI Pool Heating 2103007000 1.00 103

 Gallons PM25-PRI 0.04 LB 103 Gallons 0.00002 TON YEAR

78020 78 020 St. John County VI Pool Heating 2103007000 1.00 103

 Gallons PM10-PRI 0.05 LB 103 Gallons 0.000025 TON YEAR

78020 78 020 St. John County VI Pool Heating 2103007000 1.00 103

 Gallons SO2 0.06 LB 103 Gallons 0.00003 TON YEAR

78020 78 020 St. John County VI Pool Heating 2103007000 1.00 103

 Gallons NOX 14.23 LB 103 Gallons 0.007115 TON YEAR

78020 78 020 St. John County VI Pool Heating 2103007000 1.00 103

 Gallons VOC 0.52 LB 103 Gallons 0.00026 TON YEAR

Modeled Emissions at Grand Bay Resort

Pollutant Code

Emission 

Numeric Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

SO2 0.16191 TON YEAR

NOX 0.083115 TON YEAR

PMF (=PM10) 0.009069 TON YEAR

EC 0.00009069 TON YEAR

SO2 0.004657582 GRAM SECOND

NOX 0.002390927 GRAM SECOND

PMF (=PM10) 0.000260883 GRAM SECOND

EC 2.60883E-06 GRAM SECOND

Source Classification Codes

Stationary Fuel Use

Notes: Grand Bay Resort has a large back-up diesel generator that ran for approximately 100 hours in 

2009. There are no reported controls on this generator. Since the size of the generator and the 

generator fuel consumption are unknown, the data from Caneel Bay will be used as a surrogate. The 

Resort also has a propane pool heater that consumed approximately 1,000 gallons of propane in 2009.

Source: Information acquired through a telephone conversation between Jonathan G. Dorn, E.H. 

Pechan and Associates, Inc. and Robert Messick, Attorney at Icard, Merrill, Cullis, Timm, Furen & 

Ginsburg, P.A., on 17 February 2010. 

Emissions Calculations for St. John

Source of Emission Factors: Roy Huntley, U.S. Environmental Protection Agency (Huntley.Roy@epamail.epa.gov) in consultation with the Eastern Regional Technical Advisory Committee (ERTAC), “state_comparison ERTAC SS_version7_4 Nov 23 

2009.mdb [electronic file],” November 23, 2009.
Major Category: Health Center

Minor Category: Myrah Keating Smith Community Health Center

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2103004000

Stationary 

Source 

Fuel 

Combusti

on

Commerci

al/ 

Institution

al 

Distillate Oil Total: Boilers 

and IC Engines

2103007000

Stationary 

Source 

Fuel 

Combusti

on

Commerci

al/ 

Institution

al 

Liquefied 

Petroleum 

Gas (LPG)

Total: All 

Combustor 

Types

Region 2002

St. John 963 gallons of diesel fuel

St. John 2,407 gallons of propane

Energy content of propane 91,000 Btu/gallon

Total energy content of propane consumed in 2002 219 million Btu

FIPS State 

and County 

Code

FIPS State 

Code

FIPS 

County 

Code

County 

Name County Type

Postal 

State 

Code Activity Description SCC

Through

put

Throughput 

Unit Numerator

Pollutant 

Code

Factor 

Numeric 

Value

Factor Unit 

Numerator

Factor Unit 

Denominator

Emission 

Numeric Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

78020 78 020 St. John County VI Back-up Power Generation 2103004000 0.96 103

 Gallons PM25-FIL 0.83 LB 103 Gallons 0.000399438 TON YEAR

78020 78 020 St. John County VI Back-up Power Generation 2103004000 0.96 103

 Gallons PM10-FIL 1.08 LB 103 Gallons 0.00051975 TON YEAR

78020 78 020 St. John County VI Back-up Power Generation 2103004000 0.96 103

 Gallons PM-CON 1.3 LB 103 Gallons 0.000625625 TON YEAR

78020 78 020 St. John County VI Back-up Power Generation 2103004000 0.96 103

 Gallons PM25-PRI 2.13 LB 103 Gallons 0.001025063 TON YEAR

78020 78 020 St. John County VI Back-up Power Generation 2103004000 0.96 103

 Gallons PM10-PRI 2.38 LB 103 Gallons 0.001145375 TON YEAR

78020 78 020 St. John County VI Back-up Power Generation 2103004000 0.96 103

 Gallons SO2 42.6 LB 103 Gallons 0.02050125 TON YEAR

78020 78 020 St. John County VI Back-up Power Generation 2103004000 0.96 103

 Gallons NOX 20 LB 103 Gallons 0.009625 TON YEAR

78020 78 020 St. John County VI Back-up Power Generation 2103004000 0.96 103

 Gallons VOC 0.34 LB 103 Gallons 0.000163625 TON YEAR

78020 78 020 St. John County VI Hot Water Heating 2103007000 2.41 103

 Gallons PM25-FIL 0.01 LB 103 Gallons 1.2033E-05 TON YEAR

78020 78 020 St. John County VI Hot Water Heating 2103007000 2.41 103

 Gallons PM10-FIL 0.02 LB 103 Gallons 2.40659E-05 TON YEAR

78020 78 020 St. John County VI Hot Water Heating 2103007000 2.41 103

 Gallons PM-CON 0.03 LB 103 Gallons 3.60989E-05 TON YEAR

78020 78 020 St. John County VI Hot Water Heating 2103007000 2.41 103

 Gallons PM25-PRI 0.04 LB 103 Gallons 4.81319E-05 TON YEAR

78020 78 020 St. John County VI Hot Water Heating 2103007000 2.41 103

 Gallons PM10-PRI 0.05 LB 103 Gallons 6.01648E-05 TON YEAR

78020 78 020 St. John County VI Hot Water Heating 2103007000 2.41 103

 Gallons SO2 0.06 LB 103 Gallons 7.21978E-05 TON YEAR

78020 78 020 St. John County VI Hot Water Heating 2103007000 2.41 103

 Gallons NOX 14.23 LB 103 Gallons 0.017122912 TON YEAR

78020 78 020 St. John County VI Hot Water Heating 2103007000 2.41 103

 Gallons VOC 0.52 LB 103 Gallons 0.000625714 TON YEAR

Modeled Emissions at Myrah Keating Smith Community Health Center

Pollutant Code

Emission 

Numeric Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

SO2 0.020573448 TON YEAR

NOX 0.026747912 TON YEAR

PMF (=PM10) 0.00120554 TON YEAR

EC 1.20554E-05 TON YEAR

SO2 0.000591826 GRAM SECOND

NOX 0.000769444 GRAM SECOND

PMF (=PM10) 3.46791E-05 GRAM SECOND

EC 3.46791E-07 GRAM SECOND

Source of Emission Factors: Roy Huntley, U.S. Environmental Protection Agency (Huntley.Roy@epamail.epa.gov) in consultation with the Eastern Regional Technical Advisory Committee (ERTAC), “state_comparison ERTAC SS_version7_4 Nov 23 

2009.mdb [electronic file],” November 23, 2009.

Source Classification Codes

Stationary Fuel Use

Notes: The Myrah Keating Smith Community Health Center has a 750 kW Onan Cummins back-up 

diesel generator that ran for approximately 25 hours in 2002, consuming 38.5 gallons per hour. The 

Center also has a propane hot water heater with a 150-gallon storage capacity that operated 24/7 in 

2002. Assume that the water heater input rating is 150,000 BTU/hr and that the burner is on 4 hours per 

day.

Source: Information acquired through a questionnaire prepared by E.H. Pechan and Associates, Inc. 

Energy Content of Propane Consumed in 2002

Source: U.S. Department of Energy, Energy Information Administration, Energy Units and Calculators 

Explained, at http://tonto.eia.doe.gov/energyexplained/index.cfm?page=about_energy_units, viewed 

April 2010.

Emissions Calculations for St. John
Major Category: Condominium

Minor Category: Sirenusa

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2103004000

Stationary 

Source 

Fuel 

Combusti

on

Commerci

al/ 

Institution

al 

Distillate Oil Total: Boilers 

and IC Engines

Region 2002

St. John 0 gallons of diesel fuel

FIPS State 

and County 

Code

FIPS State 

Code

FIPS 

County 

Code

County 

Name County Type

Postal 

State 

Code Throughput

Throughput 

Unit 

Numerator

Pollutant 

Code

Factor Numeric 

Value

Factor Unit 

Numerator

Factor Unit 

Denominator

Emission 

Numeric 

Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

78020 78 020 St. John County VI 0 103

 Gallons PM25-FIL 0.83 LB 103 Gallons 0 TON YEAR

78020 78 020 St. John County VI 0 103

 Gallons PM10-FIL 1.08 LB 103 Gallons 0 TON YEAR

78020 78 020 St. John County VI 0 103

 Gallons PM-CON 1.3 LB 103 Gallons 0 TON YEAR

78020 78 020 St. John County VI 0 103

 Gallons PM25-PRI 2.13 LB 103 Gallons 0 TON YEAR

78020 78 020 St. John County VI 0 103

 Gallons PM10-PRI 2.38 LB 103 Gallons 0 TON YEAR

78020 78 020 St. John County VI 0 103

 Gallons SO2 42.6 LB 103 Gallons 0 TON YEAR

78020 78 020 St. John County VI 0 103

 Gallons NOX 20 LB 103 Gallons 0 TON YEAR

78020 78 020 St. John County VI 0 103

 Gallons VOC 0.34 LB 103 Gallons 0 TON YEAR

Modeled Emissions at Sirenusa

Pollutant Code

Emission 

Numeric 

Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

SO2 0 TON YEAR

NOX 0 TON YEAR

PMF (=PM10) 0 TON YEAR

EC 0 TON YEAR

SO2 0 GRAM SECOND

NOX 0 GRAM SECOND

PMF (=PM10) 0 GRAM SECOND

EC 0 GRAM SECOND

Source Classification Code

Stationary Fuel Use

Notes: As of January 2010, only 4 units were occupied. Sirenusa did not break ground 

until late 2004, so fuel consumption (and emissions) in 2002 was zero.

Source: Information acquired through a telephone conversation between Jonathan G. 

Dorn, E.H. Pechan and Associates, Inc. and Keshema Webbe, EPA-CEPD/VI on 28 

Emissions Calculations for St. John

Source of Emission Factors: Roy Huntley, U.S. Environmental Protection Agency (Huntley.Roy@epamail.epa.gov) in consultation with the Eastern Regional Technical Advisory Committee (ERTAC), 

“state_comparison ERTAC SS_version7_4 Nov 23 2009.mdb [electronic file],” November 23, 2009.
Major Category: Utility Company

Minor Category: Virgin Islands Water and Power Authority

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2101004000

Stationary 

Source 

Fuel 

Combusti

on

Electric 

Utility Distillate Oil

Total: Boilers 

and IC 

Engines

Region 2006

St. John 33,390 gallons of diesel fuel

FIPS State 

and County 

Code

FIPS State 

Code

FIPS 

County 

Code

County 

Name County Type

Postal 

State 

Code Throughput

Throughput 

Unit 

Numerator

Pollutant 

Code

Factor Numeric 

Value

Factor Unit 

Numerator

Factor Unit 

Denominator

Emission 

Numeric 

Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

78020 78 020 St. John County VI 33.39 103

 Gallons PM25-FIL 0.25 LB 103 Gallons 0.0041738 TON YEAR

78020 78 020 St. John County VI 33.39 103

 Gallons PM10-FIL 1 LB 103 Gallons 0.016695 TON YEAR

78020 78 020 St. John County VI 33.39 103

 Gallons PM-CON 1.3 LB 103 Gallons 0.0217035 TON YEAR

78020 78 020 St. John County VI 33.39 103

 Gallons PM25-PRI 1.55 LB 103 Gallons 0.0258773 TON YEAR

78020 78 020 St. John County VI 33.39 103

 Gallons PM10-PRI 2.3 LB 103 Gallons 3.84E-02 TON YEAR

78020 78 020 St. John County VI 33.39 103

 Gallons NOX 20 LB 103 Gallons 3.34E-01 TON YEAR

78020 78 020 St. John County VI 33.39 103

 Gallons SO2 42.6 LB 103 Gallons 7.11E-01 TON YEAR

78020 78 020 St. John County VI 33.39 103

 Gallons VOC 0.2 LB 103 Gallons 0.003339 TON YEAR

Modeled Emissions at Virgin Islands Water and Power Authority

Pollutant Code

Emission 

Numeric 

Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

SO2 7.11E-01 TON YEAR

NOX 3.34E-01 TON YEAR

PMF (=PM10) 3.84E-02 TON YEAR

EC 0.000384 TON YEAR

SO2 0.0204589 GRAM SECOND

NOX 0.0096051 GRAM SECOND

PMF (=PM10) 0.0011046 GRAM SECOND

EC 1.105E-05 GRAM SECOND

Source Classification Code

Stationary Fuel Use

Notes: VI Water and Power Authority has a 2,500 kW GM Morrison Knudsen EMD 20-

645-E4B Series back-up diesel generator on St. John. In 2006, this generator ran for 

231 hours consuming 33,390 gallons of diesel fuel. There are no reported controls on 

this generator.

Source: Information acquired through a questionnaire prepared by E.H. Pechan and 

Emissions Calculations for St. John

Source of Emission Factors: Roy Huntley, U.S. Environmental Protection Agency (Huntley.Roy@epamail.epa.gov) in consultation with the Eastern Regional Technical Advisory Committee (ERTAC), 

“state_comparison ERTAC SS_version7_4 Nov 23 2009.mdb [electronic file],” November 23, 2009. The emission factors are listed under 2102004000 - Industrial Distillate Oil Combustion.
CRUISE SHIPS

Source Classification Codes

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2280002100 Mobile Sources

Marine 

Vessels, 

Commercial Diesel

Port 

emissions

2280002200 Mobile Sources

Marine 

Vessels, 

Commercial Diesel

Underway 

emissions

Trip Distance (miles) 15

Breakwater Distance (miles) 15

Top Speed (knots) 20

2002 Calls 12

Avg Miles (Yearly) 180

Average Time 

per Call

Average Annual 

Time

hours/trip hours/year

Cruise 0.00 0.00

RSZ 1.15 13.85

Manuevering 1.00 12.00

Hotelling 10.00 120.00

Engine Size

Mode Load Factor kW Load Factor kW

Maximum Power 100% 37,800 100% 11,925 mile= 0.8689762 knots (http://online.unitconverterpro.com)

Cruise 80% 30,240 80% 9,540 short tons = 907184.7 g (http://online.unitconverterpro.com)

RSZ 20% 7,560 80% 9,540 short tons = 907184740 mg (http://online.unitconverterpro.com)

Maneuvering 10% 3,780 80% 9,540

Hotelling 0% 0 64% 7,632

CRUISE SHIPS - Annual Emissions by Engine Type

Activity VOC EF NOx EF CO EF SO2 EF PM10 EF NH3 EF NH3 BSFC VOC 

Emissions

NOx Emissions CO Emissions SO2 

Emissions

PM10 

Emissions

PM25 

Emissions

NH3 

Emissions

(Kw-hr) (g/Kw-hr) (g/Kw-hr) (g/Kw-hr) (g/Kw-hr) (g/Kw-hr) (mg/gal) (gal/kW-hr) (tpy) (tpy) (tpy) (tpy) (tpy) (tpy) (tpy)

Propulsion Engines

Cruise 0 0.53 16.6 0.7 12.99 1.76 83.3 0.07099 0.00 0.00 0.00 0.00 0.00 0.000 0.00

RSZ 104,677 0.53 16.6 0.7 12.99 1.76 83.3 0.07099 0.06 1.92 0.08 1.50 0.20 0.197 0.00

Maneuvering 45,360 2.91 22.64 5.94 20.3 2.98 83.3 0.07099 0.15 1.13 0.30 1.02 0.15 0.145 0.00

Hotellling 0 0.134 13.36 2.48 1.43 0.32 83.3 0.07099 0.00 0.00 0.00 0.00 0.00 0.000 0.00

Total 150,036.92 0.2 3.0 0.4 2.5 0.4 0.342 0.00

Cruise 0 0.53 16.6 0.7 12.99 1.76 83.3 0.07099 0.00 0.00 0.00 0.00 0.00 0.000 0.00

RSZ 132,092 0.53 16.6 0.7 12.99 1.76 83.3 0.07099 0.08 2.42 0.10 1.89 0.26 0.249 0.00

Maneuvering 114,480 2.91 22.64 5.94 20.3 2.98 83.3 0.07099 0.37 2.86 0.75 2.56 0.38 0.365 0.00

Hotelling 915,840 0.134 13.36 2.48 1.43 0.32 83.3 0.07099 0.14 13.49 2.50 1.44 0.32 0.313 0.01

Total 1,162,412.31 0.58 18.76 3.36 5.90 0.96 0.927 0.01

CRUISE SHIPS - Total Annual Emissions

SCC

Total Cruise 

Ship Emissions Activity (kW-hr)

Emissions 

Units

VOC 

Emissions

NOx 

Emissions CO Emissions 

SO2 

Emissions

PM10-PRI 

Emissions

PM25-PRI 

Emissions

PM10-FIL 

Emissions

PM25-FIL 

Emissions

PM-CON 

Emissions

NH3 

Emissions EC

2280002100 Annual 1,075,680 (tpy) 0.65 17.48 3.55 5.02 0.85 0.82 0.85 0.82 0.00 0.01 0.01

2280002200 Annual 236,769 (tpy) 0.14 4.33 0.18 3.39 0.46 0.45 0.46 0.45 0.00 0.00 0.00

Total 21.81 8.41 1.31 0.01

Mode

Propulsion Engines Auxiliary Engines

Operating Mode

Auxiliary Engines
GENERAL CARGO

Source Classification Code

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2280002100 Mobile Sources

Marine 

Vessels, 

Commercial Diesel

Port 

emissions

2280002200 Mobile Sources

Marine 

Vessels, 

Commercial Diesel

Underway 

emissions

Trip Distance (miles) 15

Breakwater Distance (miles) 15

Top Speed (knots) 14

2002 Calls 43

Avg Miles (Yearly) 645

Average Time 

per Call

Average Annual 

Time

hours/trip hours/year

Cruise 0.00 0.00

RSZ 1.65 70.88

Manuevering 1.00 43.00

Hotelling 13.85 595.55

Engine Size

Mode Load Factor kW Load Factor kW

Maximum Power 100% 800 100% 79

Cruise 80% 640 17% 13 mile= 0.86897624 knots (http://online.unitconverterpro.com)

RSZ 35% 280 27% 21 short tons = 907184.7 g (http://online.unitconverterpro.com)

Maneuvering 20% 160 45% 36 short tons = 907184740 mg (http://online.unitconverterpro.com)

Hotelling 0% 0 22% 17

GENERAL CARGO - Annual Emissions by Engine Type

Activity VOC EF NOx EF CO EF SO2 EF PM10 EF NH3 EF NH3 BSFC

VOC 

Emissions NOx Emissions CO Emissions 

SO2 

Emissions

PM10 

Emissions

PM25 

Emissions

NH3 

Emissions

(Kw-hr) (g/Kw-hr) (g/Kw-hr) (g/Kw-hr) (g/Kw-hr) (g/Kw-hr) (mg/gal) (gal/kW-hr) (tpy) (tpy) (tpy) (tpy) (tpy) (tpy) (tpy)

Cruise 0 0.53 23.6 1.1 12.82 1.73 83.3 0.06473 0.00 0.00 0.00 0.00 0.00 0.000 0.00

RSZ 19,846 0.53 23.6 1.1 12.82 1.73 83.3 0.06473 0.01 0.52 0.02 0.28 0.04 0.037 0.00

Maneuvering 6,880 2.803 32.06 8.14 19.81 2.91 83.3 0.06473 0.02 0.24 0.06 0.15 0.02 0.021 0.00

Hotellling 0 0.134 13.36 2.48 1.43 0.32 83.3 0.06473 0.00 0.00 0.00 0.00 0.00 0.000 0.00

Total 26,726.15 0.0 0.8 0.1 0.4 0.1 0.058 0.00

Auxiliary Engines

Cruise 0 0.134 13.36 2.48 3.92 0.32 83.3 0.06447 0.00 0.00 0.00 0.00 0.00 0.000 0.00

RSZ 1,512 0.134 13.36 2.48 3.92 0.32 83.3 0.06447 0.00 0.02 0.00 0.01 0.00 0.001 0.00

Maneuvering 1,529 0.134 13.36 2.48 3.92 0.32 83.3 0.06447 0.00 0.02 0.00 0.01 0.00 0.001 0.00

Hotelling 10,351 0.134 13.36 2.48 3.92 0.32 83.3 0.06447 0.00 0.15 0.03 0.04 0.00 0.004 0.00

Total 13,391.16 0.00 0.20 0.04 0.06 0.00 0.005 0.00

GENERAL CARGO - Total Annual Emissions

SCC

Total General 

Cargo 

Emissions Activity (kW-hr) Units

VOC 

Emissions

NOx 

Emissions CO Emissions 

SO2 

Emissions

PM10-PRI 

Emissions

PM25-PRI 

Emissions

PM10-FIL 

Emissions

PM25-FIL 

Emissions

PM-CON 

Emissions

NH3 

Emissions EC

2280002100 Annual 18,759 (tpy) 0.02 0.42 0.09 0.20 0.03 0.03 0.03 0.03 0.00 0.00 0.00

2280002200 Annual 21,358 (tpy) 0.01 0.54 0.03 0.29 0.04 0.04 0.04 0.04 0.00 0.00 0.00

Total 0.96 0.49 0.06 0.00

Propulsion Engines Auxiliary Engines

Operating Mode

Propulsion Engines

Mode
FERRIES

Source Classification Code

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2280002100 Mobile Sources

Marine 

Vessels, 

Commercial Diesel

Port 

emissions

2280002200 Mobile Sources

Marine 

Vessels, 

Commercial Diesel

Underway 

emissions

Trip Distance (miles) 10

Breakwater Distance (miles) 15

Top Speed (knots) 13

2002 Calls 8,679

Avg Miles (Yearly) 86,790

Average Time 

per Call

Average Annual 

Time

hours/trip hours/year

Cruise 0.60 5,221

RSZ 0.12 1,027

Manuevering 0.15 1,302

Hotelling 0.25 2,170

Engine Size

Mode Load Factor HP kW Load Factor HP kW

Maximum Power 100% 5,335 3,978.3 100% 1,167 870.2 mph= 0.868976242 knots (http://online.unitconverterpro.com)

Cruise 80% 4,268 3,182.6 17% 198 147.9 HP= 0.7457 kW (http://online.unitconverterpro.com)

RSZ 30% 1,601 1,193.5 27% 315 235.0 short tons = 907184.7 g (http://online.unitconverterpro.com)

Manuevering 15% 800 596.7 45% 525 391.6 short tons = 907184740 mg (http://online.unitconverterpro.com)

Hotelling 0% 0 0.0 22% 257 191.5

FERRIES - Annual Emissions by Engine Type

Activity VOC EF NOx EF CO EF SO2 EF PM10 EF NH3 EF NH3 BSFC

VOC 

Emissions NOx Emissions CO Emissions 

SO2 

Emissions

PM10 

Emissions

PM25 

Emissions

NH3 

Emissions

(Kw-hr) (g/Kw-hr) (g/Kw-hr) (g/Kw-hr) (g/Kw-hr) (g/Kw-hr) (mg/gal) (gal/kW-hr) (tpy) (tpy) (tpy) (tpy) (tpy) (tpy) (tpy)

Propulsion Engines

Cruise 16,617,485 0.134 13.36 2.48 3.92 0.32 83.3 0.06447 2.45 244.72 45.43 71.81 5.86 5.686 0.10

RSZ 1,225,837 0.134 13.36 2.48 3.92 0.32 83.3 0.06447 0.18 18.05 3.35 5.30 0.43 0.419 0.01

Manuevering 776,874 0.134 13.36 2.48 3.92 0.32 83.3 0.06447 0.11 11.44 2.12 3.36 0.27 0.266 0.00

Hotelling 0 0.134 13.36 2.48 3.92 0.32 83.3 0.06447 0.00 0.00 0.00 0.00 0.00 0.000 0.00

Total 18,620,196.81 2.75 274.22 50.90 80.46 6.57 6.37 0.11

Auxiliary Engines

Cruise 772,433 0.27 10 2.5 2.27 0.3 83.3 0.07249 0.23 8.51 2.13 1.93 0.26 0.248 0.01

RSZ 241,330 0.27 10 2.5 2.27 0.3 83.3 0.07249 0.07 2.66 0.67 0.60 0.08 0.077 0.00

Manuevering 509,810 0.27 10 2.5 2.27 0.3 83.3 0.07249 0.15 5.62 1.40 1.28 0.17 0.164 0.00

Hotelling 415,401 0.27 10 2.5 2.27 0.3 83.3 0.07249 0.12 4.58 1.14 1.04 0.14 0.133 0.00

Total 1,938,973.95 0.58 21.37 5.34 4.85 0.64 0.62 0.01

FERRIES - Total Annual Emissions

SCC

Total Ferry 

Emissions Activity (kW-hr) Units

VOC 

Emissions

NOx 

Emissions CO Emissions 

SO2 

Emissions

PM10-PRI 

Emissions

PM25-PRI 

Emissions

PM10-FIL 

Emissions

PM25-FIL 

Emissions

PM-CON 

Emissions

NH3 

Emissions EC

2280002100 Annual 1,702,085 (tpy) 0.39 21.64 4.67 5.67 0.58 0.56 0.58 0.56 0.00 0.01 0.01

2280002200 Annual 18,857,085 (tpy) 2.94 273.95 51.57 79.64 6.63 6.43 6.63 6.43 0.00 0.11 0.07

TOTAL 295.59 85.31 7.21 0.07

Operating Mode

Mode

Propulsion Engines Auxiliary Engines
Marine Sources - Total Annual Emissions

Modeled Emissions at Cruise Ships Modeled Emissions at Cargo Ships Modeled Emissions at Ferries

Pollutant Code

Emission 

Numeric 

Value

Emission Unit 

Numerator

Emission 

Unit 

Denominator

Pollutant 

Code

Emission 

Numeric 

Value

Emission 

Unit 

Numerator

Emission 

Unit 

Denominat

or Pollutant Code

Emission 

Numeric 

Value

Emission 

Unit 

Numerato

r

Emission 

Unit 

Denomina

tor

SO2 8.41E+00 TON YEAR SO2 4.89E-01 TON YEAR SO2 8.53E+01 TON YEAR

NOX 2.18E+01 TON YEAR NOX 9.57E-01 TON YEAR NOX 2.96E+02 TON YEAR

PMF (=PM10) 1.31E+00 TON YEAR PMF (=PM10) 6.46E-02 TON YEAR PMF (=PM10) 7.21E+00 TON YEAR

EC 0.013074579 TON YEAR EC 0.0006464 TON YEAR EC 0.0720929 TON YEAR

SO2 0.241945585 GRAM SECOND SO2 0.0140541 GRAM SECOND SO2 2.4540919 GRAM SECOND

NOX 0.627367666 GRAM SECOND NOX 0.0275191 GRAM SECOND NOX 8.5031133 GRAM SECOND

PMF (=PM10) 0.037610975 GRAM SECOND PMF (=PM10) 0.0018594 GRAM SECOND PMF (=PM10) 0.2073859 GRAM SECOND

EC 0.00037611 GRAM SECOND EC 1.859E-05 GRAM SECOND EC 0.0020739 GRAM SECOND
Puerto Rico and St. Thomas Point Source Data

Source SO2 Nox PM10

St. Thomas - Power Plant (lb/hr) 5.21E+01 4.20E+01 2.26E+01

St. Thomas - Power Plant (g/s) 6.56E+00 5.29E+00 2.85E+00

Puerto Rico - Power Plant (tpy) 4.53E+02 2.06E+03 6.23E+02

Puerto Rico - Power Plant (g/s) 1.30E+01 5.92E+01 1.79E+01

References:

St. Thomas

Prevention of Significant Deterioration of Air Quality (PSD)

Final Permit for Unit 22 at the Krum Bay Facility

Puerto Rico

AES Puerto Rico Cogeneration Plant (AES-PRCP) Second Revision to the Final Prevention of 

Significant Deterioration of Air Quality (PSD) Pennit for the AES Puerto Rico Cogeneration Plant 

(AES-PRCP) - Administrative Permit Modification
Tortola (BVI)

Fuel Oil Emissions - Area Source

Basis: Value: Units: Reference:

Fuel Oil Usage - 2009 1,000 bbl/day CIA - The World Factbook

Conversion - Gallons per Barrel 42 gal/bbl

Fuel Oil #2 - PM/PM10 Emission Factor 3.3 lb/103

 gal AP-42, Table 1.3-6, Uncontrolled

Fuel Oil #2 - SO2 Emission Factor 142S lb/103

 gal AP-42, Table 1.3-1, Uncontrolled, <100 MMBtu

Fuel Oil #2 - Typical Sulfur Content 0.5%

Fuel Oil #2 - NOX Emission Factor 20 lb/103

 gal AP-42, Table 1.3-1, Uncontrolled, <100 MMBtu

Area of Tortola 2.5 km2Landmass Used For Modeling

1,000 bbl * 42 gal * day = 1,750 gal

day bbl 24 hour hour

Calculations:

PM/PM10

1,750 gal * 3.30 lb = 5.78 lb = 2.91E-07 g

hour 103 gal hour m

2

 s

SO 2

142 * 0.5 = 71 lb

103 gal

1,750 gal * 71 lb = 124 lb = 6.26E-06 g

hour 103 gal hour m

2

 s

NOx

1,750 gal * 20 lb = 35 lb = 1.76E-06 g

hour 103 gal hour m

2

 s
Tortola Open Burning

1 Open Burning/Clearing

Basis: Value: Units: Reference:

Size of Burning Area 1 Hectare Project Specification

Size of Burning Area 10000 m2 Conversion

PM Emissions Factor 153 kg/Hectare AP-42 Table 13.1-2 (Intermountain Region)

NOX Emission Factor 36 kg/Hectare AP-42 Table 13.1-2 (Intermountain Region)

Time of Burn 24 hour Engineering Estimate

Calculations:

PM/PM10

153 kg * 1 Hectare / 24 hour * 2.20 lb = 14.03 lb = 1.77 g = 1.77E-04 g

Hectare 1 kg hr s m

2

 s

NOx

36 kg * 1 Hectare / 24 hour * 2.20 lb = 3.30 lb = 0.42 g = 4.16E-05 g

Hectare 1 kg hr s m

2

 s
Major Category: Mobile Source

Minor Category: Fugitive Dust from Paved Roads

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2294000000 Mobile Sources Paved Roads All Paved Roads Total: Fugitives

Year Total Paved Roads Unpaved Roads

2002 16.108 15.44 0.67

2003 16.83 16.13 0.70

Scaling Factor 0.9571

FIPS State and 

County Code FIPS State Code FIPS County Code County Name County Type

Postal State 

Code Throughput Throughput Unit Numerator

Throughput 

Unit 

Denominator

Pollutant 

Code

Factor 

Numeric 

Value

Factor Unit 

Numerator Factor Unit Denominator

Emission 

Numeric 

Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

78020 78 020 St. John County VI 15.44 MILLION MILES YEAR PM10-PRI 4,240 LB MILLION MILES 32.728623 TON YEAR

78020 78 020 St. John County VI 15.44 MILLION MILES YEAR PM25-PRI 838 LB MILLION MILES 6.4685344 TON YEAR

78020 78 020 St. John County VI 15.44 MILLION MILES YEAR PM10-FIL 4,240 LB MILLION MILES 32.728623 TON YEAR

78020 78 020 St. John County VI 15.44 MILLION MILES YEAR PM25-FIL 838 LB MILLION MILES 6.4685344 TON YEAR

78020 78 020 St. John County VI 15.44 MILLION MILES YEAR PM-CON 0 LB MILLION MILES 0 TON YEAR

Paved Total PM 32.728623

Unpaved Total PM 99.356594

Modeled Emissions from Paved and Unpaved Road Fugitives

Pollutant Code

Emission 

Numeric 

Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

SO2 0.00E+00 TON YEAR

NOX 0.00E+00 TON YEAR

PMF (=PM10) 1.32E+02 TON YEAR

EC 1.32E+00 TON YEAR

SO2 0 GRAM SECOND

NOX 0 GRAM SECOND

PMF (=PM10) 3.799628 GRAM SECOND

EC 0.0379963 GRAM SECOND

SO2 0 GRAM SECOND-M2

NOX 0 GRAM SECOND-M2

PMF (=PM10) 7.307E-08 GRAM SECOND-M2

EC 7.307E-10 GRAM SECOND-M2

Source Area 52000000 M2 --

Source Classification Code

Total Vehicle Miles Traveled (Million Miles)

Notes: A scaling factor was used to estimate 2002 paved and unpaved road VMT from 2003 VMT.

Source: The total VMT is based on data from the Federal Highway Administration as reported in E.H. Pechan & Associates, Inc. "Documentation for the Final 2002 

Mobile National Emissions Inventory, Version 3,” report prepared for U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Research 

Triangle Park, NC. September 2007.

Emissions Calculations for St. John

Source of Emission Factors: EPA 2006. United States Environmental Protection Agency, Office of Air Quality Planning and Standards. “Compilation of Air Pollutant Emission Factors, AP-42, Fifth Edition, Volume I: Stationary Point and Area Sources, Section 13.2.1, Paved Roads.” Research Triangle Park, NC. 2006.
Major Category: Mobile Source

Minor Category: Fugitive Dust from Unpaved Roads

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2296000000 Mobile Sources Unpaved Roads All Unpaved Roads Total: Fugitives

Year Total Paved Roads Unpaved Roads

2002 16.108 15.44 0.67

2003 16.83 16.13 0.70

Scaling Factor 0.9571

FIPS State and 

County Code FIPS State Code FIPS County Code County Name County Type

Postal State 

Code Throughput Throughput Unit Numerator

Throughput 

Unit 

Denominator

Pollutant 

Code

Factor 

Numeric 

Value

Factor Unit 

Numerator Factor Unit Denominator

Emission 

Numeric 

Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

78020 78 020 St. John County VI 0.67 MILLION MILES YEAR PM10-PRI 296,600 LB MILLION MILES 99.356594 TON YEAR

78020 78 020 St. John County VI 0.67 MILLION MILES YEAR PM25-PRI 44,340 LB MILLION MILES 14.853241 TON YEAR

78020 78 020 St. John County VI 0.67 MILLION MILES YEAR PM10-FIL 296,600 LB MILLION MILES 99.356594 TON YEAR

78020 78 020 St. John County VI 0.67 MILLION MILES YEAR PM25-FIL 44,340 LB MILLION MILES 14.853241 TON YEAR

78020 78 020 St. John County VI 0.67 MILLION MILES YEAR PM-CON 0 LB MILLION MILES 0 TON YEAR

Source Classification Code

Total Vehicle Miles Traveled (Million Miles)

Notes: A scaling factor was used to estimate 2002 paved and unpaved road VMT from 2003 VMT.

Source: The total VMT is based on data from the Federal Highway Administration as reported in E.H. Pechan & Associates, Inc. "Documentation for the Final 2002 

Mobile National Emissions Inventory, Version 3,” report prepared for U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Research 

Triangle Park, NC. September 2007.

Emissions Calculations for St. John

Source of Emission Factors: United States Environmental Protection Agency, Office of Air Quality Planning and Standards. “Compilation of Air Pollutant Emission Factors, AP-42, Fifth Edition, Volume I: Stationary Point and Area Sources, Section 13.2.2, Unpaved Roads.” Research Triangle Park, NC. 2003.
Aggregate St. John Burning Sources

Pollutant 

Code

Forest 

Wildfires

Open Burning 

- Yard - Brush

Open Burning - 

Yard - Leaves

Structure 

Fires Other Burning

TOTAL 

Emission 

Numeric 

Value

Emission Unit 

Numerator

Emission Unit 

Denominator

SO2 0 0.027267419 0.001783411 0 0 0.02905083 TON YEAR

NOx 0 0 0 0.00483 0 0.00483 TON YEAR

PM25-PRI 0.37355 0.249841838 0.051625063 0.0339066 0 0.7089235 TON YEAR

PM10-PRI 0.43555 0.324088064 0.051625063 0.03726 0 0.84852313 TON YEAR

Modeled Emissions from Aggregate St. John Burning Sources

Pollutant 

Code

Emission 

Numeric 

Value

Emission Unit 

Numerator

Emission Unit 

Denominator

SO2 2.91E-02 TON YEAR

NOX 4.83E-03 TON YEAR

PMF (=PM10) 8.49E-01 TON YEAR

EC 8.49E-03 TON YEAR

SO2 0.00083569 GRAM SECOND

NOX 0.000138942 GRAM SECOND

PMF (=PM10) 0.024409031 GRAM SECOND

EC 0.00024409 GRAM SECOND

SO2 9.28545E-11 GRAM SECOND-M2

NOX 1.5438E-11 GRAM SECOND-M2

PMF (=PM10) 2.71211E-09 GRAM SECOND-M2

EC 2.71211E-11 GRAM SECOND-M2

Source Area 9000000 M2 --
Major Category: Miscellaneous Area Sources

Minor Category: Forest Wildfires

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2810001000 Miscellaneous Area Sources Other Combustion Forest Wildfires Wildfires - Unspecified

Region 2002

St. John 10.0

Region 2002

St. John 3.1

FIPS State and 

County Code FIPS State Code FIPS County Code County Name County Type

Postal State 

Code Throughput Throughput Unit Numerator

Throughput 

Unit 

Denominator

Pollutant 

Code

Factor 

Numeric 

Value

Factor Unit 

Numerator Factor Unit Denominator

Emission 

Numeric 

Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

78020 78 020 St. John County VI 31.00 TONS FUEL BURNED YEAR PM25-FIL 24.1 LB TON FUEL BURNED 0.37355 TON YEAR

78020 78 020 St. John County VI 31.00 TONS FUEL BURNED YEAR PM10-FIL 28.1 LB TON FUEL BURNED 0.43555 TON YEAR

78020 78 020 St. John County VI 31.00 TONS FUEL BURNED YEAR PM-CON 0 LB TON FUEL BURNED 0 TON YEAR

78020 78 020 St. John County VI 31.00 TONS FUEL BURNED YEAR PM25-PRI 24.1 LB TON FUEL BURNED 0.37355 TON YEAR

78020 78 020 St. John County VI 31.00 TONS FUEL BURNED YEAR PM10-PRI 28.1 LB TON FUEL BURNED 0.43555 TON YEAR

Source of Emission Factors: U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Documentation for the Draft 2002 Nonpoint Source National Emission Inventory for Criteria and Hazardous Air Pollutants , prepared by E.H. Pechan and Associates, Inc., March 2005.

Source Classification Code

Area Consumed in Wildfires (acres)

Source: Information acquired through a questionnaire prepared by E.H. Pechan and Associates, Inc. and sent to the Virgin Islands Fire Service on 20 November 

2009. Daryl George, Assistant Director, Virgin Islands Fire Service, returned the completed questionnaire to Jonathan G. Dorn, E.H. Pechan and Associates, Inc. on 

16 December 2009. 

Fuel Loading Factor (i.e., amount of fuel burned, tons/acre)

Source: Based on EPA data for summer hardwoods as reported in William R. Barnard and Pat Brewer, Development of Managed Buning and Wildland Fire Emission 

Estimates for the Visibility Improvement - State and Tribal Associatin of the Southeast (VISTAS) , MACTEC Engineering and Consulting, Inc. 

Emissions Calculations for St. John
Major Category: Waste Disposal, Treatment, and Recovery

Minor Category: Open Burning - Yard Waste - Brush

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2610000400 Waste Disposal, Treatment, 

and Recovery Open Burning All Categories Yard Waste - Brush Species Unspecified

Region 2002

St. John 4,252

Region 2002

St. John 0.4

Region 2002

St. John 0.7

Region 2002

St. John 0.28

Region 2002

St. John 0.54

FIPS State and 

County Code FIPS State Code FIPS County Code County Name County Type

Postal State 

Code Throughput Throughput Unit Numerator

Throughput 

Unit 

Denominator

Pollutant 

Code

Factor 

Numeric 

Value

Factor Unit 

Numerator Factor Unit Denominator

Emission 

Numeric 

Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

78020 78 020 St. John County VI 32.85 TON BRUSH BURNED YEAR PM25-FIL 15.21 LB TON BRUSH BURNED 0.2498418 TON YEAR

78020 78 020 St. John County VI 32.85 TON BRUSH BURNED YEAR PM10-FIL 19.73 LB TON BRUSH BURNED 0.3240881 TON YEAR

78020 78 020 St. John County VI 32.85 TON BRUSH BURNED YEAR PM-CON 0 LB TON BRUSH BURNED 0 TON YEAR

78020 78 020 St. John County VI 32.85 TON BRUSH BURNED YEAR SO2 1.66 LB TON BRUSH BURNED 0.0272674 TON YEAR

78020 78 020 St. John County VI 32.85 TON BRUSH BURNED YEAR PM25-PRI 15.21 LB TON BRUSH BURNED 0.2498418 TON YEAR

78020 78 020 St. John County VI 32.85 TON BRUSH BURNED YEAR PM10-PRI 19.73 LB TON BRUSH BURNED 0.3240881 TON YEAR

Source of Emission Factors: Roy Huntley, U.S. Environmental Protection Agency (Huntley.Roy@epamail.epa.gov) in consultation with the Eastern Regional Technical Advisory Committee (ERTAC), “state_comparison ERTAC SS_version7_4 Nov 23 2009.mdb [electronic file],” November 23, 2009.

Source: Information acquired through a questionnaire prepared by E.H. Pechan and Associates, Inc. and sent to the Virgin Islands Fire Service on 20 November 

2009. Daryl George, Assistant Director, Virgin Islands Fire Service, returned the completed questionnaire to Jonathan G. Dorn, E.H. Pechan and Associates, Inc. on 

16 December 2009. 

Fraction of Yard Waste Generated that Is Burned

Source: Two Rivers Regional Council of Public Officials and Patrick Engineering, Inc., Emission Characteristics of Burn Barrels , prepared for the U.S. Environmental 

Protection Agency, Region V. June 1994.

Per Capita Yard Waste Generated (lb/person/day)

Source: U.S. Environmental Protection Agency, Municipal Solid Waste in the United States: 2002 Facts and Figures , EPA530-R-02-001, Office of Solid Waste and 

Emergency Response. June 2002. 

Emissions Calculations for St. John

Brush Fraction of Yard Waste

Source Classification Code

2002 Population

Source: Frank L. Mills, Marcy Mason, Annette Gumbs, and James Richardson, 2002 Unites States Virgin Islands Statistical Digest , Eastern Caribbean Center, 

University of the Virgin Islands, May 2004, available at http://www.pacificweb.org/DOCS/usvi/2002%20yearbook/2002%20Statistical%20Digest.pdf.

Fraction of St. John Population that Burns Yard Waste

Source: Information acquired through a questionnaire prepared by E.H. Pechan and Associates, Inc. and sent to the Virgin Islands Fire Service on 20 November 

2009. Daryl George, Assistant Director, Virgin Islands Fire Service, returned the completed questionnaire to Jonathan G. Dorn, E.H. Pechan and Associates, Inc. on 

16 December 2009. 
Major Category: Waste Disposal, Treatment, and Recovery

Minor Category: Open Burning - Yard Waste - Leaves

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2610000100 Waste Disposal, Treatment, 

and Recovery Open Burning All Categories Yard Waste - Leaf Species Unspecified

Region 2002

St. John 4,252

Region 2002

St. John 0.4

Region 2002

St. John 0.1

Region 2002

St. John 0.28

Region 2002

St. John 0.54

FIPS State and 

County Code FIPS State Code FIPS County Code County Name County Type

Postal State 

Code Throughput Throughput Unit Numerator

Throughput 

Unit 

Denominator

Pollutant 

Code

Factor 

Numeric 

Value

Factor Unit 

Numerator Factor Unit Denominator

Emission 

Numeric 

Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

78020 78 020 St. John County VI 4.69 TON LEAVES BURNED YEAR PM25-FIL 22 LB TON LEAVES BURNED 0.0516251 TON YEAR

78020 78 020 St. John County VI 4.69 TON LEAVES BURNED YEAR PM10-FIL 22 LB TON LEAVES BURNED 0.0516251 TON YEAR

78020 78 020 St. John County VI 4.69 TON LEAVES BURNED YEAR PM-CON 0 LB TON LEAVES BURNED 0 TON YEAR

78020 78 020 St. John County VI 4.69 TON LEAVES BURNED YEAR SO2 0.76 LB TON LEAVES BURNED 0.0017834 TON YEAR

78020 78 020 St. John County VI 4.69 TON LEAVES BURNED YEAR PM25-PRI 22 LB TON LEAVES BURNED 0.0516251 TON YEAR

78020 78 020 St. John County VI 4.69 TON LEAVES BURNED YEAR PM10-PRI 22 LB TON LEAVES BURNED 0.0516251 TON YEAR

Source of Emission Factors: Roy Huntley, U.S. Environmental Protection Agency (Huntley.Roy@epamail.epa.gov) in consultation with the Eastern Regional Technical Advisory Committee (ERTAC), “state_comparison ERTAC SS_version7_4 Nov 23 2009.mdb [electronic file],” November 23, 2009.

Source: Information acquired through a questionnaire prepared by E.H. Pechan and Associates, Inc. and sent to the Virgin Islands Fire Service on 20 November 

2009. Daryl George, Assistant Director, Virgin Islands Fire Service, returned the completed questionnaire to Jonathan G. Dorn, E.H. Pechan and Associates, Inc. on 

16 December 2009. 

Fraction of Yard Waste Generated that Is Burned

Source: Two Rivers Regional Council of Public Officials and Patrick Engineering, Inc., Emission Characteristics of Burn Barrels , prepared for the U.S. Environmental 

Protection Agency, Region V. June 1994.

Per Capita Yard Waste Generated (lb/person/day)

Source: U.S. Environmental Protection Agency, Municipal Solid Waste in the United States: 2002 Facts and Figures , EPA530-R-02-001, Office of Solid Waste and 

Emergency Response. June 2002. 

Emissions Calculations for St. John

Leaf Fraction of Yard Waste

Source Classification Code

2002 Population

Source: Frank L. Mills, Marcy Mason, Annette Gumbs, and James Richardson, 2002 Unites States Virgin Islands Statistical Digest , Eastern Carribean Center, 

University of the Virgin Islands, May 2004, available at http://www.pacificweb.org/DOCS/usvi/2002%20yearbook/2002%20Statistical%20Digest.pdf.

Fraction of St. John Population that Burns Yard Waste

Source: Information acquired through a questionnaire prepared by E.H. Pechan and Associates, Inc. and sent to the Virgin Islands Fire Service on 20 November 

2009. Daryl George, Assistant Director, Virgin Islands Fire Service, returned the completed questionnaire to Jonathan G. Dorn, E.H. Pechan and Associates, Inc. on 

16 December 2009. 
Major Category: Miscellaneous Area Sources

Minor Category: Structure Fires

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2810030000 Miscellaneous Area Sources Other Combustion Structure Fires Total

Region 1999 2002 Growth

% change 

from 1999 2002/1999

St. John 6.9 6.9 0 0% 1.0

FIPS State and 

County Code County Name SCC

Amount of Material Burned in 

1999 (tons) Growth Factor

2002 

Throughput

Throughput 

Unit 

Numerator Material Code

78020 St. John 2104007000 6.9 1.000 6.9 TONS 124

FIPS State and 

County Code FIPS State Code FIPS County Code County Name County Type

Postal State 

Code Throughput

Throughput Unit 

Numerator

Throughput 

Unit 

Denominator

Pollutant 

Code

Factor 

Numeric 

Value

Factor Unit 

Numerator

Factor Unit 

Denominator

Emission 

Numeric 

Value

Emission Unit 

Numerator

Emission Unit 

Denominator

78020 78 020 St. John County VI 6.90 TONS BURNED YEAR PM25-FIL 9.828 LB TON 0.0339066 TON YEAR

78020 78 020 St. John County VI 6.90 TONS BURNED YEAR PM10-FIL 10.8 LB TON 0.03726 TON YEAR

78020 78 020 St. John County VI 6.90 TONS BURNED YEAR PM-CON 0 LB TON 0 TON YEAR

78020 78 020 St. John County VI 6.90 TONS BURNED YEAR PM25-PRI 9.828 LB TON 0.0339066 TON YEAR

78020 78 020 St. John County VI 6.90 TONS BURNED YEAR PM10-PRI 10.8 LB TON 0.03726 TON YEAR

78020 78 020 St. John County VI 6.90 TONS BURNED YEAR NOX 1.4 LB TON 0.00483 TON YEAR

Source of Emission Factors: Documentation for the Final 1999 National Emissions Inventory (Version 3.0) for Criteria and Ammonia Area Sources, prepared for the Office of Air Quality Planning and Standards, Emission Factor and Inventory Group, Environmental Protection Agency by E.H. Pechan and 

Associates, Inc., January 31, 2004.

Source Classification Code

Amount of Material Burned (tons/yr)

Note: Information was not available to determine structure fire activity for 2002 in the U.S. Virgin Islands. Therefore, in the absence of data for 2002, the 1999 inventory 

was used as a surrogate for 2002 emissions.

Amount of Material Burned on St. John

Source of 1999 Tons Burned: Virgin Islands 1999 Area Source Inventory Data Collection Effort, Volumes 1 and 2 , Table 4.13.4, Prepared for U.S. Environmental Protection Agency Region 

2, State Implementation Plan Section, by Booz, Allen, and Hamilton, Durham, North Carolina, September 4, 2003.

Emissions Calculations for St. John
Major Category: Miscellaneous Area Sources

Minor Category: Managed Burning - Logging Debris

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2810050000 Miscellaneous Area Sources Other Combustion Managed Burning, Slash 

(Logging Debris)

Unspecified Burn Method (use 

2610000500 for non-logging 

debris)

Region 2002

St. John 0.0

FIPS State and 

County Code FIPS State Code FIPS County Code County Name County Type

Postal State 

Code Throughput Throughput Unit Numerator

Throughput 

Unit 

Denominator

Pollutant 

Code

Factor 

Numeric 

Value

Factor Unit 

Numerator Factor Unit Denominator

Emission 

Numeric 

Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

78020 78 020 St. John County VI 0.00 YEAR PM25-FIL LB 0 TON YEAR

78020 78 020 St. John County VI 0.00 YEAR PM10-FIL LB 0 TON YEAR

78020 78 020 St. John County VI 0.00 YEAR PM-CON LB 0 TON YEAR

78020 78 020 St. John County VI 0.00 YEAR PM25-PRI LB 0 TON YEAR

78020 78 020 St. John County VI 0.00 YEAR PM10-PRI LB 0 TON YEAR

Source Classification Code

Logging Debris Burned (tons)

Source: Information acquired through a questionnaire prepared by E.H. Pechan and Associates, Inc. and sent to the Virgin Islands Fire Service on 20 November 

2009. Daryl George, Assistant Director, Virgin Islands Fire Service, returned the completed questionnaire to Jonathan G. Dorn, E.H. Pechan and Associates, Inc. on 

16 December 2009. 

Emissions Calculations for St. John

Source of Emission Factors: na
Major Category: Miscellaneous Area Sources

Minor Category: Agricultural Field Burning

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2801500000 Miscellaneous Area Sources Agriculture 

Production - Crops

Agricultural Field Burning - 

whole field set on fire Unspecified

Region 2002

St. John 0.0

FIPS State and 

County Code FIPS State Code FIPS County Code County Name County Type

Postal State 

Code Throughput Throughput Unit Numerator

Throughput 

Unit 

Denominator

Pollutant 

Code

Factor 

Numeric 

Value

Factor Unit 

Numerator Factor Unit Denominator

Emission 

Numeric 

Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

78020 78 020 St. John County VI 0.00 YEAR PM25-FIL LB 0 TON YEAR

78020 78 020 St. John County VI 0.00 YEAR PM10-FIL LB 0 TON YEAR

78020 78 020 St. John County VI 0.00 YEAR PM-CON LB 0 TON YEAR

78020 78 020 St. John County VI 0.00 YEAR SO2 LB 0 TON YEAR

78020 78 020 St. John County VI 0.00 YEAR PM25-PRI LB 0 TON YEAR

78020 78 020 St. John County VI 0.00 YEAR PM10-PRI LB 0 TON YEAR

Source Classification Code

Agricultural Field Residue Burned (tons)

Source: Information acquired through a questionnaire prepared by E.H. Pechan and Associates, Inc. and sent to the Virgin Islands Fire Service on 20 November 

2009. Daryl George, Assistant Director, Virgin Islands Fire Service, returned the completed questionnaire to Jonathan G. Dorn, E.H. Pechan and Associates, Inc. on 

16 December 2009. 

Emissions Calculations for St. John

Source of Emission Factors: 
Major Category: Waste Disposal, Treatment, and Recovery

Minor Category: Open Burning - Household Waste

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2610030000 Waste Disposal, Treatment, 

and Recovery Open Burning Residential Household Waste (use 26-10-000-xxx for Yard Wastes)

Region 2002

St. John 0.0

FIPS State and 

County Code FIPS State Code FIPS County Code County Name County Type

Postal State 

Code Throughput Throughput Unit Numerator

Throughput 

Unit 

Denominator

Pollutant 

Code

Factor 

Numeric 

Value

Factor Unit 

Numerator Factor Unit Denominator

Emission 

Numeric 

Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

78020 78 020 St. John County VI 0.00 YEAR PM25-FIL 34.8 LB TON FUEL BURNED 0 TON YEAR

78020 78 020 St. John County VI 0.00 YEAR PM10-FIL 38 LB TON FUEL BURNED 0 TON YEAR

78020 78 020 St. John County VI 0.00 YEAR PM-CON 0 LB TON FUEL BURNED 0 TON YEAR

78020 78 020 St. John County VI 0.00 YEAR SO2 1 LB TON FUEL BURNED 0 TON YEAR

78020 78 020 St. John County VI 0.00 YEAR PM25-PRI 34.8 LB TON FUEL BURNED 0 TON YEAR

78020 78 020 St. John County VI 0.00 YEAR PM10-PRI 38 LB TON FUEL BURNED 0 TON YEAR

Source Classification Code

Household Municipal Solid Waste Burned (tons)

Source: Information acquired through a questionnaire prepared by E.H. Pechan and Associates, Inc. and sent to the Virgin Islands Fire Service on 20 November 

2009. Daryl George, Assistant Director, Virgin Islands Fire Service, returned the completed questionnaire to Jonathan G. Dorn, E.H. Pechan and Associates, Inc. on 

16 December 2009. 

Emissions Calculations for St. John

Source of Emission Factors: Roy Huntley, U.S. Environmental Protection Agency (Huntley.Roy@epamail.epa.gov) in consultation with the Eastern Regional Technical Advisory Committee (ERTAC), “state_comparison ERTAC SS_version7_4 Nov 23 2009.mdb [electronic file],” November 23, 2009.
Major Category: Miscellaneous Area Sources

Minor Category: Prescribed Forest Burning

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2810015000 Miscellaneous Area Sources Other Combustion Prescribed Forest Burning Unspecified

Region 2002

St. John 0.0

FIPS State and 

County Code FIPS State Code FIPS County Code County Name County Type

Postal State 

Code Throughput Throughput Unit Numerator

Throughput 

Unit 

Denominator

Pollutant 

Code

Factor 

Numeric 

Value

Factor Unit 

Numerator Factor Unit Denominator

Emission 

Numeric 

Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

78020 78 020 St. John County VI 0.00 TON FUEL BURNED YEAR PM25-FIL 24.1 LB TON FUEL BURNED 0 TON YEAR

78020 78 020 St. John County VI 0.00 TON FUEL BURNED YEAR PM10-FIL 28.1 LB TON FUEL BURNED 0 TON YEAR

78020 78 020 St. John County VI 0.00 TON FUEL BURNED YEAR PM-CON 0 LB TON FUEL BURNED 0 TON YEAR

78020 78 020 St. John County VI 0.00 TON FUEL BURNED YEAR PM25-PRI 24.1 LB TON FUEL BURNED 0 TON YEAR

78020 78 020 St. John County VI 0.00 TON FUEL BURNED YEAR PM10-PRI 28.1 LB TON FUEL BURNED 0 TON YEAR

Source Classification Code

Forest Biomass Burned (tons)

Source: Information acquired through a questionnaire prepared by E.H. Pechan and Associates, Inc. and sent to the Virgin Islands Fire Service on 20 November 

2009. Daryl George, Assistant Director, Virgin Islands Fire Service, returned the completed questionnaire to Jonathan G. Dorn, E.H. Pechan and Associates, Inc. on 

16 December 2009. 

Emissions Calculations for St. John

Source of Emission Factors: Roy Huntley, U.S. Environmental Protection Agency (Huntley.Roy@epamail.epa.gov) in consultation with the Eastern Regional Technical Advisory Committee (ERTAC), “state_comparison ERTAC SS_version7_4 Nov 23 2009.mdb [electronic file],” November 23, 2009.
Major Category: Miscellaneous Area Sources

Minor Category: Prescribed Rangeland Burning

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2810020000 Miscellaneous Area Sources Other Combustion Prescribed Rangeland Burning Unspecified

Region 2002

St. John 0.0

FIPS State and 

County Code FIPS State Code FIPS County Code County Name County Type

Postal State 

Code Throughput Throughput Unit Numerator

Throughput 

Unit 

Denominator

Pollutant 

Code

Factor 

Numeric 

Value

Factor Unit 

Numerator Factor Unit Denominator

Emission 

Numeric 

Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

78020 78 020 St. John County VI 0.00 YEAR PM25-FIL LB 0 TON YEAR

78020 78 020 St. John County VI 0.00 YEAR PM10-FIL LB 0 TON YEAR

78020 78 020 St. John County VI 0.00 YEAR PM-CON LB 0 TON YEAR

78020 78 020 St. John County VI 0.00 YEAR PM25-PRI LB 0 TON YEAR

78020 78 020 St. John County VI 0.00 YEAR PM10-PRI LB 0 TON YEAR

Source Classification Code

Rangeland Biomass Burned (tons)

Source: Information acquired through a questionnaire prepared by E.H. Pechan and Associates, Inc. and sent to the Virgin Islands Fire Service on 20 November 

2009. Daryl George, Assistant Director, Virgin Islands Fire Service, returned the completed questionnaire to Jonathan G. Dorn, E.H. Pechan and Associates, Inc. on 

16 December 2009. 

Emissions Calculations for St. John

Source of Emission Factors: 
Major Category: Stationary Source Fuel Combustion

Minor Category: Residential Boilers - LPG

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2104007000 Stationary Source Fuel Combustion Residential Liquified Petroleum Gas (LPG) Total: All Combustor Types

Region 1999 2002 Growth

% change 

from 1999 2002/1999

Virgin Islands 5 7 2 40% 1.4

FIPS State and 

County Code County Name SCC LPG Usage in 1999 (gallons) Growth Factor

2002 

Throughput

Throughput 

Unit 

Numerator

Material 

Code

78020 St. John 2104007000 391,329 1.400 547,861 GALLONS 178

FIPS State and 

County Code FIPS State Code

FIPS County 

Code County Name County Type

Postal State 

Code Throughput

Throughput 

Unit 

Numerator

Throughput 

Unit 

Denominator

Pollutant 

Code

Factor 

Numeric 

Value

Factor Unit 

Numerator

Factor Unit 

Denominator

Emission 

Numeric 

Value

Emission Unit 

Numerator

Emission Unit 

Denominator

78020 78 020 St. John County VI 547,861 GALLONS YEAR PM25-FIL 0.01 LB THOUSAND GALLONS 0.0027393 TON YEAR

78020 78 020 St. John County VI 547,861 GALLONS YEAR PM10-FIL 0.02 LB THOUSAND GALLONS 0.0054786 TON YEAR

78020 78 020 St. John County VI 547,861 GALLONS YEAR PM-CON 0.03 LB THOUSAND GALLONS 0.0082179 TON YEAR

78020 78 020 St. John County VI 547,861 GALLONS YEAR PM25-PRI 0.04 LB THOUSAND GALLONS 0.0109572 TON YEAR

78020 78 020 St. John County VI 547,861 GALLONS YEAR PM10-PRI 0.05 LB THOUSAND GALLONS 0.0136965 TON YEAR

78020 78 020 St. John County VI 547,861 GALLONS YEAR NOX 13.4 LB THOUSAND GALLONS 3.670666 TON YEAR

78020 78 020 St. John County VI 547,861 GALLONS YEAR SO2 0.06 LB THOUSAND GALLONS 0.0164358 TON YEAR

Source of Emission Factors: Roy Huntley, U.S. Environmental Protection Agency (Huntley.Roy@epamail.epa.gov) in consultation with the Eastern Regional Technical Advisory Committee (ERTAC), “state_comparison ERTAC SS_version7_4 Nov 23 2009.mdb [electronic file],” November 23, 2009.

Modeled Emissions at Residential Boilers - LPG

Pollutant Code Emission Numeric Value

Emission Unit 

Numerator Emission Unit Denominator

SO2 1.64E-02 TON YEAR

NOX 3.67E+00 TON YEAR

PMF (=PM10) 1.37E-02 TON YEAR

EC 0.000136965 TON YEAR

SO2 0.000472801 GRAM SECOND

NOX 0.105592174 GRAM SECOND

PMF (=PM10) 0.000394001 GRAM SECOND

EC 3.94001E-06 GRAM SECOND

SO2 5.25334E-11 GRAM SECOND-M2

NOX 1.17325E-08 GRAM SECOND-M2

PMF (=PM10) 4.37778E-11 GRAM SECOND-M2

EC 4.37778E-13 GRAM SECOND-M2

Source Area 9000000 M2 --

Emissions Calculations for St. John

Source Classification Code

LPG Usage for Virgin Islands (E3BBL/day)

Sources: U.S. Department of Energy, Energy Information Administration, International Energy Annual 2000 , Table 3.5, World Apparent Consumption of Refined 

Petroleum Products and U.S. Department of Energy, Energy Information Administration, International Energy Annual 2003 , Table 3.5, World Apparent Consumption of 

Refined Petroleum Products. 

LPG Usage for St. John

Source of 1999 Fuel Usage: Virgin Islands 1999 Area Source Inventory Data Collection Effort, Volumes 1 and 2 , Table 4.4.4, Prepared for U.S. Environmental Protection Agency Region 

2, State Implementation Plan Section, by Booz, Allen, and Hamilton, Durham, North Carolina, September 4, 2003.
St. John Miscellaneous Industrial Sources

Pollutant Code Landfills

Majestic 

Concrete

Residential 

Construction

TOTAL 

Emission 

Numeric 

Value

Emission Unit 

Numerator

Emission Unit 

Denominator

SO2 0 0 0 0 TON YEAR

NOx 0 0 0 0 TON YEAR

PM25-PRI 0 0.13135848 1.072155706 1.20351419 TON YEAR

PM10-PRI 0 0.32159624 10.72155706 11.0431533 TON YEAR

Modeled Emissions from Misc. St. John Industrial Sources

Pollutant Code

Emission 

Numeric 

Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

SO2 0.00E+00 TON YEAR

NOX 0.00E+00 TON YEAR

PMF (=PM10) 1.10E+01 TON YEAR

EC 1.10E-01 TON YEAR

SO2 0 GRAM SECOND

NOX 0 GRAM SECOND

PMF (=PM10) 0.31767275 GRAM SECOND

EC 0.00317673 GRAM SECOND

SO2 0 GRAM SECOND-M2

NOX 0 GRAM SECOND-M2

PMF (=PM10) 3.5297E-08 GRAM SECOND-M2

EC 3.5297E-10 GRAM SECOND-M2

Source Area 9000000 M2 --
Major Category: Industry

Minor Category: Majestic Concrete

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2305070000 Industrial Processes Mineral Processes SIC 32 - Concrete, Gypsum, 

Plaster Products Total

Region 2006

St. John 25,282 cubic yards

course aggregate 1,865 lbs

sand 1,428 lbs

cement 491 lbs

cement supplement 73 lbs

water 167 lbs

wind speed (U) 10 mph

minimum moisture of cement (M) 1 percent by weight

particle size multiplier (k), PM10 0.32

particle size multiplier (k), PM25 0.048

aPM10 1.75

aPM25 1.75

bPM10 0.3

bPM25 0.3

cPM10 0.0052

cPM25 0.00078

FIPS State and 

County Code FIPS State Code FIPS County Code County Name County Type

Postal State 

Code Activity Description Throughput Throughput Unit Numerator Pollutant Code

Factor 

Numeric 

Value

Factor Unit 

Numerator

Factor Unit 

Denominator Emission Numeric Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

78020 78 020 St. John County VI Aggregate Transfer 23,575 TON PM25-FIL 0.0033 LB TON Material Loaded 0.038899517 TON YEAR

78020 78 020 St. John County VI Aggregate Transfer 23,575 TON PM10-FIL 0.0033 LB TON Material Loaded 0.038899517 TON YEAR

78020 78 020 St. John County VI Aggregate Transfer 23,575 TON PM-CON 0 LB TON Material Loaded 0 TON YEAR

78020 78 020 St. John County VI Aggregate Transfer 23,575 TON PM25-PRI 0.0033 LB TON Material Loaded 0.038899517 TON YEAR

78020 78 020 St. John County VI Aggregate Transfer 23,575 TON PM10-PRI 0.0033 LB TON Material Loaded 0.038899517 TON YEAR

78020 78 020 St. John County VI Sand Transfer 18,051 TON PM25-FIL 0.00099 LB TON Material Loaded 0.008935417 TON YEAR

78020 78 020 St. John County VI Sand Transfer 18,051 TON PM10-FIL 0.00099 LB TON Material Loaded 0.008935417 TON YEAR

78020 78 020 St. John County VI Sand Transfer 18,051 TON PM-CON 0 LB TON Material Loaded 0 TON YEAR

78020 78 020 St. John County VI Sand Transfer 18,051 TON PM25-PRI 0.00099 LB TON Material Loaded 0.008935417 TON YEAR

78020 78 020 St. John County VI Sand Transfer 18,051 TON PM10-PRI 0.00099 LB TON Material Loaded 0.008935417 TON YEAR

78020 78 020 St. John County VI Weight Hopper Loading 41,627 TON PM25-FIL 0.0024 LB TON Material Loaded 0.049952176 TON YEAR

78020 78 020 St. John County VI Weight Hopper Loading 41,627 TON PM10-FIL 0.0024 LB TON Material Loaded 0.049952176 TON YEAR

78020 78 020 St. John County VI Weight Hopper Loading 41,627 TON PM-CON 0 LB TON Material Loaded 0 TON YEAR

78020 78 020 St. John County VI Weight Hopper Loading 41,627 TON PM25-PRI 0.0024 LB TON Material Loaded 0.049952176 TON YEAR

78020 78 020 St. John County VI Weight Hopper Loading 41,627 TON PM10-PRI 0.0024 LB TON Material Loaded 0.049952176 TON YEAR

78020 78 020 St. John County VI Truck Mixing 7,130 TON PM25-FIL 0.0094176 LB TON Material Mixed 0.03357137 TON YEAR

78020 78 020 St. John County VI Truck Mixing 7,130 TON PM10-FIL 0.0627838 LB TON Material Mixed 0.223809132 TON YEAR

78020 78 020 St. John County VI Truck Mixing 7,130 TON PM-CON 0 LB TON Material Mixed 0 TON YEAR

78020 78 020 St. John County VI Truck Mixing 7,130 TON PM25-PRI 0.0094176 LB TON Material Mixed 0.03357137 TON YEAR

78020 78 020 St. John County VI Truck Mixing 7,130 TON PM10-PRI 0.0627838 LB TON Material Mixed 0.223809132 TON YEAR

Source: U.S. Environmental Protection Agency, AP-42, Fifth Edition, Vloume I, Chapter 11 - Mineral Products Industry, Section 12 - Concrete Batching, June 2006, at 

http://www.epa.gov/ttn/chief/ap42/ch11/index.html, viewed April 2010.

Emissions Calculations for St. John

Source of Emission Factors: U.S. Environmental Protection Agency, AP-42, Fifth Edition, Vloume I, Chapter 11 - Mineral Products Industry, Section 12 - Concrete Batching, June 2006, at http://www.epa.gov/ttn/chief/ap42/ch11/index.html, viewed April 2010..

Source Classification Code

Volume of Concrete Mixed

Notes: Majestic Concrete stores sand and aggregate in piles on site. The concrete constituents (i.e. sand, aggregate, and cement) are loaded from the weight hopper into the 

cement truck using a backhoe. All of the loading grounds are paved and Majesic Concrete uses water spray, enclosures, hoods, curtains and telescoping chutes to control dust.

Source: Information acquired through a questionnaire prepared by E.H. Pechan and Associates, Inc. and sent to Cheryl Sturgess, Majestic Concrete on 18 February 2010. Ms. 

Sturgess returned the completed questionnaire via email to Jonathan G. Dorn, E.H. Pechan and Associates, Inc. on 1 April 2010. 

Average Material Composition of One Cubic Yard of Concrete

Source: U.S. Environmental Protection Agency, AP-42, Fifth Edition, Volume I, Chapter 11 - Mineral Products Industry, Section 12 - Concrete Batching, June 2006, at 

http://www.epa.gov/ttn/chief/ap42/ch11/index.html, viewed April 2010.

Emission Factor Equation Parameters for Truck Mixing Operations
Major Category: Industrial Processes

Minor Category: Construction - Fugitive Dust

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2311010000 Industrial Processes Construction: SIC 

15 - 17 General Building Construction Total

Region 2002

St. John 223

Assumptions:

1) Fraction of residential structures with part of their foundation below grade 0.5

2) Approximate slope of land where foundations are below grade 20 degrees

3) Average length of residential structure foundation that is parallel to mountain 50 feet

4) Depth below grade at rear of foundation 10 feet

5) Additional volume for excavation of peripheral soil 10 percent

Total soil excavated in 2002 for below grade construction 9,627 cubic yards

Assumptions:

1) Residential structures are single-unit

2) Average construciton time 6 months

3) Acres disturbed per residential structure 0.25 acres per structure

Total acres disturbed from residential construction in 2002 56 acres

Assumptions:

1) Precipitation-Evaporation (PE) value from Thornthwaite’s PE Index 57.9

2) Silt content of soil 30 percent

FIPS State and 

County Code FIPS State Code FIPS County Code County Name County Type

Postal State 

Code Throughput Throughput Unit Numerator

Throughput 

Unit 

Denominator

Pollutant 

Code

Factor 

Numeric 

Value

Factor Unit 

Numerator Factor Unit Denominator

Emission 

Numeric 

Value

Emission Unit 

Numerator

Emission Unit 

Denominator

78020 78 020 St. John County VI 167.25 Acre-Month YEAR PM25-FIL 0.00442 TONS Acre-Month 0.7394819 TON YEAR

78020 78 020 St. John County VI 167.25 Acre-Month YEAR PM10-FIL 0.04421 TONS Acre-Month 7.3948187 TON YEAR

78020 78 020 St. John County VI 167.25 Acre-Month YEAR PM-CON 0 TONS Acre-Month 0 TON YEAR

78020 78 020 St. John County VI 167.25 Acre-Month YEAR PM25-PRI 0.00442 TONS Acre-Month 0.7394819 TON YEAR

78020 78 020 St. John County VI 167.25 Acre-Month YEAR PM10-PRI 0.04421 TONS Acre-Month 7.3948187 TON YEAR

78020 78 020 St. John County VI 167.25 Acre-Month YEAR PM25-FIL 0.00152 TONS Acre-Month 0.2541969 TON YEAR

78020 78 020 St. John County VI 167.25 Acre-Month YEAR PM10-FIL 0.0152 TONS Acre-Month 2.5419689 TON YEAR

78020 78 020 St. John County VI 167.25 Acre-Month YEAR PM-CON 0 TONS Acre-Month 0 TON YEAR

78020 78 020 St. John County VI 167.25 Acre-Month YEAR PM25-PRI 0.00152 TONS Acre-Month 0.2541969 TON YEAR

78020 78 020 St. John County VI 167.25 Acre-Month YEAR PM10-PRI 0.0152 TONS Acre-Month 2.5419689 TON YEAR

78020 78 020 St. John County VI 9.63 1,000 Cubic Yards YEAR PM25-FIL 0.00815 TONS 1,000 Cubic Yards 0.0784769 TON YEAR

78020 78 020 St. John County VI 9.63 1,000 Cubic Yards YEAR PM10-FIL 0.08152 TONS 1,000 Cubic Yards 0.7847695 TON YEAR

78020 78 020 St. John County VI 9.63 1,000 Cubic Yards YEAR PM-CON 0 TONS 1,000 Cubic Yards 0 TON YEAR

78020 78 020 St. John County VI 9.63 1,000 Cubic Yards YEAR PM25-PRI 0.00815 TONS 1,000 Cubic Yards 0.0784769 TON YEAR

78020 78 020 St. John County VI 9.63 1,000 Cubic Yards YEAR PM10-PRI 0.08152 TONS 1,000 Cubic Yards 0.7847695 TON YEAR

Sources: Acres disturbed per single housing unit from the 2008 National Emissions Inventory prepared by the U.S. Environmental Protection Agency at 

http://www.epa.gov/ttn/chief/net/2008inventory.html, viewed April 2010.

Variables for Emission Factor Correction

Sources: PE value assumed to be the same as the PE value for Hawaii. Silt content of soil from U.S. Department of Agriculture, Soil Survey of the United States 

Virgin Islands , 2000.

Emissions Calculations for St. John

Source of Emission Factors: U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Technical Memorandum: Revised Methodology for Estimating Emissions from Construction , Prepared by E.H. Pechan & Associates. Research Triangle Park, NC. September 2000.

Construction Time and Acres Disturbed per Residential Structure

Source Classification Code

Residential Building Permits Issued on St. John

Notes: There were 279 building permits issued for St. John in 2002. Of these, 80 percent were for residential construction.

Source: Information acquired through a telephone interview between Joseph Blyden, Division of Building Permits, Virgin Islands Department of Planning and 

Natural Resources and Jonathan G. Dorn, E.H. Pechan & Associates, Inc. on 20 January 2010. 

Soil Excavated for Below Grade Construction

Sources: Fraction of residential structures with part of their foundation below grade from a telephone interview between Joseph Blyden, Division of Building 

Permits, Virgin Islands Department of Planning and Natural Resources and Jonathan G. Dorn, E.H. Pechan & Associates, Inc. on 20 January 2010. Slope of land 

estimated from U.S. Geological Survey, Web Soil Survey at http://websoilsurvey.nrcs.usda.gov/app/WebSoilSurvey.aspx, viewed April 2010.
Major Category: Waste Disposal, Treatment, and Recovery

Minor Category: Landfills

SCC SCC_L1 SCC_L2 SCC_L3 SCC_L4

2620000000 Waste Disposal, Treatment, 

and Recovery Landfills All Categories Total

Region 2002

St. John 0.0

FIPS State and 

County Code FIPS State Code FIPS County Code County Name County Type

Postal State 

Code Throughput Throughput Unit Numerator

Throughput 

Unit 

Denominator

Pollutant 

Code

Factor 

Numeric 

Value

Factor Unit 

Numerator Factor Unit Denominator

Emission 

Numeric 

Value

Emission 

Unit 

Numerator

Emission Unit 

Denominator

78020 78 020 St. John County VI 0.00 DRY STANDARD CUBIC FEET YEAR PM25-FIL 15 LB 10

6

 DRY STANDARD CUBIC FEET 0 TON YEAR

78020 78 020 St. John County VI 0.00 DRY STANDARD CUBIC FEET YEAR PM10-FIL 15 LB 10

6

 DRY STANDARD CUBIC FEET 0 TON YEAR

78020 78 020 St. John County VI 0.00 DRY STANDARD CUBIC FEET YEAR PM-CON 0 LB 10

6

 DRY STANDARD CUBIC FEET 0 TON YEAR

78020 78 020 St. John County VI 0.00 DRY STANDARD CUBIC FEET YEAR PM25-PRI 15 LB 10

6

 DRY STANDARD CUBIC FEET 0 TON YEAR

78020 78 020 St. John County VI 0.00 DRY STANDARD CUBIC FEET YEAR PM10-PRI 15 LB 10

6

 DRY STANDARD CUBIC FEET 0 TON YEAR

Source Classification Code

Volume of Landfill Gas Flared on St. John (dry standard cubic feet/yr)

Note: According to VIWMA website: The Susannaberg Landfill on St. John was closed in the early 1990’s when an underground fire was discovered and extinguished. 

This facility now operates as a transfer station, as the solid waste on St. John is collected from the many disposal sites (bin sites) located strategically around the 

island fur use by the residents to dispose of their household waste. The waste is then taken to the Susannaberg Transfer Station, compacted and then barged to St. 

Thomas where it is transported to the Bovoni Landfill on the southeastern end of the island and disposed of there.

Source of Flaring Information: Email to Jonathan G. Dorn, E.H. Pechan and Associates, Inc. from May Adams Cornwall, Executive Director, Virgin Islands Waste 

Management Association, 9 December 2009.

Emissions Calculations for St. John

Source of Emission Factors: EPA, October 2008. Section 2.4, Municipal Solid Waste Landfills. In: Compilation of Air Pollutant Emission Factors, Volume 1: Stationary Point and Area Sources , Fifth Edition, AP-42. U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards. Research Triangle Park, North 

Carolina.
Modeled Emissions from Motor Vehicles

Pollutant Code Emission Numeric Value

Emission Unit 

Numerator

Emission Unit 

Denominator

SO2 1.61E+00 TON YEAR

NOX 2.50E+01 TON YEAR

PMF (=PM10) 7.34E-01 TON YEAR

EC 0.007340597 TON YEAR

SO2 0.046294548 GRAM SECOND

NOX 0.719979539 GRAM SECOND

PMF (=PM10) 0.021116319 GRAM SECOND

EC 0.000211163 GRAM SECOND

SO2 8.9028E-10 GRAM SECOND-M2

NOX 1.38458E-08 GRAM SECOND-M2

PMF (=PM10) 4.06083E-10 GRAM SECOND-M2

EC 4.06083E-12 GRAM SECOND-M2

Source Area 52000000 M2 --