# Attachment 1

# Air Quality Analysis Modeling Protocol

Statoil OCS Permitting Project

Prepared for: Environmental Protection Agency, Region IV Atlanta, Georgia

On behalf of: StatOilGulf Services, LLC Houston, Texas

Prepared by:
ENVIRON Interna tional Corporation Baton Rouge

, Louisiana

Date: July 20 12

Project Number:
26

- 27189 A

## StatOilGulf Services, LLC Air Quality Analysis Modeling Protocol

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# Contents

Page

1 Introduction 1

2 Modeling Meth odology 2

2.1 Dispersion Model Selection 2

2.2 Meteorological Data 2

2.3 Source Characterization 2

2.3.1 Stack Parameters 3

2.4 Building Downwash 4

2.5 Receptors 4

3 Modeling Analysis 5

3.1 Modeling Scenarios 5

3.2 Pre

- Construction Monitoring 5

3.3 Preliminary and Full Impacts Analysis 6

4 Additional Impacts Analysis 7

4.1 Visibility 7

5 Class I Area Impacts Analysis 8

5.1 Modeling Methodology 8

5.1.1 Dispersion Model 8

5.1.2 Modeling Procedures 9

5.1.3 Modeling Domain 9

5.1.4 Source Characterization 10

5.1.5 Chemical Transformations 10

5.1.6 Building Downwash 10

5.1.7 Receptor Grids 10

5.1.8 Meteorological Data 11

5.2 Modeling Analysis 11

5.2.1 Increment Consumption 11

5.2.2 AQRVs 12

6 References 15

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## List of Tables

Table 1: Significant Monitoring Concentrations

Table 2: Applicable PSD Class II SILs, NAAQS and Increments

Table 3 : Class I Area Distances from Statoil Lease Blocks

Table 4: “Q/D” Analysis

Table 5: Class I Area SILs and Increments

T able 6 : Sulfur and Nitrogen Deposition Thresholds

List of Figures

Figure 1: Proposed Modeling Domain

– Statoil OCS

List of Appendices

Appendix A: Proposed CALPU FF Control Parameters

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# 1 Introduction

StatOilGulf Services, LLC ( Statoil ) is applying for a Title V and Prevention of Significant Deterioration (PSD) permit from the Unites States Environmental Protection Agency (EPA) Region IV for the proposed drilling of e xploration wells in the Eastern Gulf of Mexico (GOM) beyond the 25

- mile seaward boundary of any state. The proposed exploration will consist of the operation of deepwater drilling rigs and an associated fleet on the Outer Continental Shelf (OCS) of the GO M. As such, the application will be made under the OCS permitting rules (40 CFR 55). This document presents the proposed modeling protocol for the Air Quality Impacts Assessment (AQIA) required as part of the permitting process.

The modeling protocol pre sented here is based on EPA guidance from the Revision to the Guideline on Air Quality Models (November 2005). In addition, the modeling protocol reflects guidance provided by EPA and FWS during the recent Shell Exploration and Production Company permitti ng process, and relevant discussions with Stan Krivo (EPA), Kelly Fortin (EPA), and Jill Webster (FWS)

.

All regulated PSD pollutants will be subject to PSD review. The P SD regulated pollutants

include particulate matter (PM), carbon monoxide (CO), nitroge n dioxide (NO 2 

# ), sulfur dioxide (SO 2 

# ) and ozone (O 3 

# ). The AQIA for this project will address all pollutants that result in a significant emissions increase with respect to PSD. At this point, it is assumed the project will only be significant for NOx . At this time, Statoil will not address CO 2 

# in the AQIA because there are no existing or proposed ambient standards for CO 2 

# or other greenhouse gases.

Statoil is requesting flexibility to conduct exploratory drilling at multiple locations in the Eastern

GOM. Figure 1 shows the location of Statoil’s lease blocks (Desoto Canyon lease blocks 143,
187, 188, 230

, 231 , 625, 669, 670, 671, 715, 716, 759, 760, and 804 )

. Several of these lease blocks have been added to the list after the May 2, 2012 pre

- application meeting, after recent auctions. The added lease blocks are all south of the original list of lease blocks, farther from the Louisiana/Mississippi/Alabama coastline.

Statoil also proposes the use of multiple rigs, namely the Transocean Discoverer Americ as ( Transocean ), or the Maersk Developer (Maersk) drilling rigs. The Maersk is a semi

submersible drilling rig on two pontoons, yet is dynamically positioned. T he Transocean rig is a dynamic ally positioned drilling vessel with a single hull

. Neither requ ires towing vessels or anchor handling vessels. Statoil will utilize the worst

- case emissions and modeling parameters from these rigs in the AQIA to ensure all possible scenarios are addressed.

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# 2 Modeling Methodology

EPA established a policy in the 2011 Shell E&P permit for De Soto Canyon, whereby the “property boundary” of OCS sources is set at 25 nautical miles from the respective State’s seaward boundary.



# 2.1 Dispersion Model Selection

Because the Statoil lease blocks are more than 50 km from the line 2 5 nautical miles from the States’ seaward boundary, AERMOD cannot be used (40 CFR 51 Appendix W, 4.2.2(b)). For this situation, the CALPUFF modeling system is appropriate.

CALPUFF version 5.8, the regulatory default version, will be used for both the Clas s I AQRV and Increment analyses and the Class II NAAQS and Increment analyses . Using the conservative assumption that the maximum 1

- hour emission rates are the same as the

maximum 24

- hour emission rates, a single CALPUFF run can be used to assess complian ce at

both Class I and Class II receptors for all averaging periods ≤ 24 hours. A separate CALPUFF

run will be used to asses s annual averages, for both Class I and Class II receptors.



# 2.2 Meteorological Data

Statoil proposes to use the three

- year meteorological dataset (2001

– 2003) for CALMET/CALPUFF that covers the Gulf of Mexico (GOM) region, which was prepared for VISTAS BART modeling 1 

# . Specifically, Statoil proposes to use Domain 2, which is centered on Florida but extends far enough to the west to reach 50 km wes t of the Breton Wilderness.

The CALMET/CALPUFF input data files were constructed using a combination of on

- shore surface and upper

- air data from the National Weather Service (NWS), offshore buoy data from the National Data Buoy Center (NDBC), and model o utput from the MM5 model. Ozone data were also compiled as part of this dataset

, and were obtained from the EPA Air Quality System (AQS). Statoil will use the most recent version developed by the FLM using the regulatory

version of CALMET.



# 2.3 Source Chara cterization

The primary emission sources consist of engines on the Rigs and mobile equipment, such as supply ships and life boats. OCS permitting rules consider direct emissions from sources located within 25 miles of the facility. These rules require St atoil to consider impacts from the associated fleet of vessels that support the drilling unit.

Maersk Developer emission sources include the following:

• 

# Main Generator Engines (8 )

1 

## http://www.vistas

- sesarm.org/BART/calpuff.asp

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## • 

# Standby Generator Engine (1)

• 

# Cementing Unit Engines (2)

• 

# Life Boats (4)

• 

# Resc ue Boat (1 )

• 

# Fuel Storage Vessels

• 

# Fugitives (diesel fuel system)

• 

# Support Vessels (e.g. crew boats)

Discoverer Americas emission sources include the following:

• 

# Main Generator Engines (6 )

• 

# Emergency Generator Engine (1)

• 

# Life Boats (6 )

• 

# Rescue Boat (1)

• 

# Emergency Air Compressor Engine s ( 2 )

• 

# Fuel Storage Vessels

• 

# Fugitives (diesel fuel system)

• 

# Support Vessels (e.g. crew boats)



# 2.3.1 Stack Parameters

Stationary sources, such as the diesel engines, may have vertical

, horizontal , or angled discharge orientation. For stacks with a vertical discharge, Statoil will use actual stack parameter data (i.e., stack diameter, stack exit velocity and stack exit temperature). For stacks

with a horizontal or angled discharge, Statoil will adjust the stack parameters to remove any

moment um rise, but maintain thermal rise , by using a stack exit velocity of 0.001 m/s. Statoil

will use the ac tual stack exit temperature, diameter, and stack height of each point source.

Statoil proposes to model mobile sources (crew boats, offshore support ve ssels, etc.) as a series of volume source s. These will be located along the line between the main drilling vessel and a point 25 miles away, in the direction of the B reton Wilderness Area

. Ten (10) volume sources will be used to represent the combined em issions from all relevant mobile sources.

Volume sources are defined by four parameters:

• 

# An emission rate

• 

# A release height (called an “effected emission height”)

• 

# An initial horizontal dimension called the initial sigma

- Y

• 

# An initial vertical dimension call ed the initial sigma

- Z

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# According to Section 1.2 in the User’s Guide for the Industrial Source Complex (ISC3) Dispersion Models, Volume II

- Description of Model Algorithms (EPA

- 454/95

- 003b, September 1995), the effective release height should be based on t he height of the emissions including any plume rise for buoyancy of the emissions. The plume heights for the fleet emissions will be estimated using SCREEN3, which accounts for the mechanical and buoyant lift from the ship’s

stacks. 2 

# The stack characteri stics of the main propulsion engines for each ship will be used with the SCREEN3 algorithms to define the plume height and sigma Z values for the fleet emissions

.

Initial dispe rsion for volume sources is characterized by two parameters, σ y 

# (sigma Y) and σ

z 

# (sigma Z). For the fleet, the sigma Y value for each volume source will be determined by dividing the physical horizontal dimension of the volume by 2.15 as recommended in th e ISC

User’s Guide.

The base elevation of all sources will be referenced to sea level. For example, stationary sources located on the deck of the drilling unit will have a base elevation corresponding to the height of the deck above the operating wate r line. Stack parameters for all emission sources are currently under development and will be presented in detail in the permit application.



# 2.4 Building Downwash

Given that the nearest receptors are located more than 175 km from the source, building

downwash effects will not significantly affect the modeled results. The FLMs typically do not request downwash be included, and neither “downwash” nor “BPIP” are mentioned in FLAG (2010).



# 2.5 Receptor s

Statoil proposes to use a single domain for both the Class II and Class I modeling: a subset of

the VISTAS CALMET Domain 2 shown in Figure 1 . Class II receptors have been placed

25 nautical miles from the seaward boundary of the four States, and are shown in red. Class I receptors were obtained from the National Park Service (see Section 5).

2 

## SCREEN3 is an alternate EPA

- approved screening model that uses the same plume rise equations as ISCST3 and AERMOD but also provides a printout of plume rise calculations.

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# 3 Class II Modeling Analysis

Maximum modeled impacts will be compared to the applicable ambient air quality standards and PSD Class II increments. This approach is presented below.



# 3.1 Modeling Scenarios

Statoil is requesting the fle xibility to operate either the Maersk Developer or the Transocean

Discoverer Americas drilling units at any given time. All the drilling units can operate under varying engine load scenarios and with various fleet vessel support operating scenarios. T he modeling analysis will include two scenarios to adequately address worst

- case impacts:

• 

# Maersk rig operating under a range of emissions and release parameters (including partial loads) and with associated support vessels

• 

# Transocean rig operating under a range of emissions and release parameters (including partial loads) and with associated support vessels

Statoil will estimate maximum hourly (lb/hr) and annual (ton/year) emission rates for each drilling vessel. This leads to a total of four modeling scen arios: short

- term and long

- term for each of the two proposed vessels.

Statoil will be requesting permits for portable major sources to allow the Maersk or the

Transocean and their associated fleet to operate in any of Statoil’s lease blocks located withi n the Eastern GOM. As such, Statoil will represent worst

- case dispersion conditions as follows: Each lease block has dimensions of approximately five kilometers by five kilometers. The closest point to shore is the northwest corner of the Desoto Canyon 1 43 lease block, which lies

at 28.851 o 

# N and 87.424 o 

# W . For purposes of this modeling analysis, Statoil will model all

scenarios from this northwest corner

. S tatoil expects impacts to be the same for all locations

within the lease blocks. This location h as been selected to represent the lease blocks as a whole because it is the closest location to shore and the nearest Class I area (Breton).



# 3.2 Pre

- Construction Monitoring

Pre

- construction ambient monitoring may be required for any criteria pollutant that is proposed to be emitted above the significant emission rates (or 100 tons per year of volatile organic compounds [VOCs]). Statoil proposes to emit nitrogen oxides (NO

x 

# ) in significant amounts.

If the predicted concentrations from direct emission sources (i.e., the highest modeled concentration for the applicable averaging time, caused by the proposed significant emissions increase) are above the significant monitoring concentrations (SMCs) and EPA Region IV determines that ambient monitoring is required, Statoil will satisfy such a requirement by using existing ambient monitoring data (refer to Section 3.6 of this modeling protocol for details). SMCs are listed in Table 1. No monitoring is required if modeling results of the significance analysis are bel ow the defined SMCs for a given pollutant and time period.

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# Table 1. Significant Monitoring Concentrations

Pollutant Averaging Time Air Quality Concentration ( μ g/m 3 

## )

NO 2 

## Annual 14



# 3.3 Preliminary and Full Impacts Analysis

PSD modeling analysis involves two phases: a preliminary analysis (referred to as a Significant Impact Analysis) and, if required, a Full Impact Analysis. The preliminary analysis estimates

am bient concentrations resulting from the proposed project for pollutants that trigger PSD

review. Because Statoil proposes to emit NO

x 

# in excess of 40 TPY, a PM 2.5 

# review is also triggered.

The results of the preliminary analysis determine whether a full i mpact analysis (facility plus background and the concentrations from regional sources) for a particular pollutant is necessary. If the ambient concentrations from the preliminary analysis are greater than the PSD Significant Impact Levels (SILs), then a F ull Impact Assessment is required.

The EPA has not identified a regulatory

- default model for secondary PM 2.5 

# . Therefore, only concentrations resulting from proposed primary PM 2.5 

# emissions will be compared to the PM 2.5 

# SILs.

If the preliminary analysis indicates that either a Class I or Class II full impact analysis is necessary, a separate modeling procedure will developed in conjunction with the appropriate agency representative (EPA or FLM).

Table 2 lists the applicable Class II SIL, NAAQS and Class II PSD increments.

Table 2. Applicable PSD Class II SILs, NAAQS and Increments

Pollutant Averaging

Period Class II Significant Impact Level ( μ g/m 3 

## ) NAAQS ( μ g/m 3 

## ) Class II PSD

Increment

( μ g/m 3 

## )

NO 2 

## 1

- hour 7.5 (1) 

## 188 ( 2 ) 

## N/A

Annual 1 100 25

PM 2/5 

## 24

- hour 1.2 15 (3) 

## 9

Annual 0.3 35 4

1 

## Interim SIL, established June 28, 2010 in the memo “Guidance Concerning the Implementation of the 1

- hour NO 2



## NAAQS for the Prevention of Significant Deterioration Program”

. 2 

## To attain this standard, the 5

- year averag e of the 98th percentile of daily maximum 1

- hour concentrations must not

exceed 188 μg/m 3



## , effectiv e April 12, 2010

. 3 

## To attain this standard, the 5

- year average of the 98th percentile of 24

- hour concentrations must not exceed

35 μg /m 3



## .

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# 4 Additional Impa cts Analysis

40 CFR 52.21 requires an Additional Impacts Analysis for compounds under PSD review. The Additional Impacts Analysis includes the analysis of the project’s impact on the visibility of the surrounding area, growth and development in the surroun ding area, and soil and vegetation in the surrounding area. However, since the site is located offshore and there is no development or vegetation within 30 km of the project, the additional impacts analysis will be restricted to visibility impacts only.



# 4.1 Visibility

The project’s potential impact on visibility surrounding the facility will be investigated according to the procedures in EPA’s Workbook for Plume Visual Impact Screening and Analysis (Revised). 3 

# This visibility analysis is distinct from the an alysis required for a Class I area. A Level I screening analysis will be performed using the latest version of VISCREEN. If a Level I screening analysis does not pass the appropriate thresholds, a Level II analysis will be implemented by replacing the de fault meteorology with data obtained from the representative meteorological station ( Tampa West buoy [WBAN# 42039 ] and Panama City NWS station [WBAN# 03882 ]).

3 

## United States Environmental Protection Agency (USEPA). 1992. Workbook for Plume Vi sual Impact Screening and

Analysis. EPA/454/R

- 92

- 023.

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# 5 Class I Area Impacts Analysis

PSD guidance requires an analysis of potential impacts to air qual ity related values (AQRVs) in Federal Class I areas within 100 km (62.1 miles) of the facility subject to PSD review. However, for most applications, the Federal Land Managers (FLMs) request analyses of AQRV impacts

for additional Class I areas within 200

– 300 km of the site. The locations of all nearby Class I areas in relation to the facility are shown i n Figure 1. As shown in Table 3 , only the Breton Wilderness Area is located within 300 km of the facility.

Table 3. Class I Area Distances from Statoi l Lease Blocks

Class I Area Distance 1



## (km) (miles)

Breton Wilderness Area (LA) 175 109

Bradwell Bay Wilderness Area (FL) 307 191

Saint Marks Wilderness Area (FL) 313 194

Chassahowitzka Wilderness Area (FL) 461 286

Notes:

1 

## Distance to northwest co rner of Desoto Canyon 143 lease block (28. 85064 °N, 87. 42378 °W)



# The Breton, Chassahowitzka and Saint Marks Wilderness Areas are managed by the Fish and Wildlife Service (FWS). The Bradwell Bay Wilderness Area is managed by the Forest Service (FS). S tatoil will share this modeling protocol with the FWS and FS to obtain their concurrence with the proposed approach. Statoil has already made initial contact with the FWS to discuss the proposed project and AQRV analysis. 4



# 5.1 Modeling Methodology

5.1.1 Dispersion Model

On April 15, 2003, EPA adopted the CALPUFF modeling system as the EPA’s preferred model for long

- range transport assessments and for evaluating potential impacts to Class I areas by including CALPUFF in Appendix A of the Guideline (November 2005). F eatures of the CALPUFF modeling system include the ability to consider: secondary aerosol formation; gaseous and particle deposition; wet and dry deposition processes; complex three

- dimensional wind regimes; and the effects of humidity on regional visibili ty. Statoil proposes to use the CALPUFF modeling system for modeling Class I area impacts , using the following elements in this analysis:

• 

# CALPUFF version 5.8, level 070623

4 

## Bart Brashers of ENVIRON had phone discussions with Ms. Jill Webster of FWS in early March, 2012.

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## • 

# CALMET version 5.8, level 070623

• 

# CALPOST version 6.221, level 080724 (AQRV analysis only)

• 

# CALPOST version 5.6394, level 070622 (PSD increment analysis only)



# 5.1.2 Modeling Procedures

Statoil will follow the recommendations of the Interagency Workgroup on Air Quality Modeling (IWAQM) and the FLM Air Quality Related Values Workgroup (FLAG), outl ined in the FLAG Phase I Report (December 2000 , Revised October 2010 ). EPA endorsed these procedures in
advance of the IWAQM Phase II draft report (December 1998), and reiterated the endorsement in the April 15, 2003 Federal Register notice (Volume 68, Nu mber 72) that adopted CALPUFF as a Guideline model. Proposed CALPUFF model selections are presented in Appendix A.

Statoil proposes to model worst

- case emission rates from the facility at the northwest corner of the Desoto Canyon Block 143 as described in Section 3.1. This location is the closest to any of

the Class I areas.

Based on initial estimates of the maximum 24

- hour emissions of NO

x 

# , SO 2 

# , H 2 

# SO 4 

# , and PM 10 

# for each drilling vessel and associated fleet, an initial “Q/D” analysis yields values in ex cess of 10 (Table 4). This indicates that the magnitude of emission do not “pass” the initial screening test recommended by FLAG (2010) and the full Class I analysis is required.

Table 4. “Q/D” Analysis

Class I Area Distance 1



## (km) Q/D

Maersk Transocea n

Breton Wilderness Area (LA) 175 14 20

Notes:

1 

## Distance to northwest corner of Desoto Canyon 143 lease block (28. 85064 °N, 87. 42378 °W)



# 5.1.3 Modeling Domain

The size of the proposed modeling domain is shown in Figure 1

, and extend s at least 50 km beyond each Class I area and the facility to allow for the possible recirculation of puffs beyond the facility and Class I areas. Due to the large size of the proposed domain, it uses the Lambert conformal projection to represent the locations of modeled source s, grid cells and receptors.

Consistent with grid spacing in the VISTAS CALMET Domain 2 dataset, Statoil proposes to use a grid spacing interval of 4 km. The vertical domain is also composed of terrain

- following grid

cells. The number and size of these c ells are selected to constrain the boundary layer in which dispersion and chemical transformations occur. Consistent with the CALMET meteorological
datasets, Statoil proposes to use 10 vertical grid cells with cell face heights set at 0; 20; 40; 80;
160; 320; 640; 1,200; 2,000; 3,000; and 4,000 meters above the modeled ground surface.

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# 5.1.4 Source Characterization

Source characterization for CALPUFF will be identical to that developed for the Class II analysis . Source locations will be in Lambert Conformal Coor dinate (LCC) system, using the reference coordinate system of the VISTAS CALMET Domain 2 data grid.

The CALPUFF modeling will consider emissions of NO

x 

# , SO 2 

# , and PM for the evaluation of
AQRVs at the Class I areas. 5 

# However, the CALPUFF modeling will ca lculate only

concentrations of NO

x 

# and primary PM 2.5 

# for the evaluation of PSD increment consumption at

the Class I areas.



# 5.1.5 Chemical Transformations

5.1.5.1 Ammonia

The NO

x 

# chemistry in CALPUFF depends on the ambient ammonia concentration to establish the equilibri um between gaseous nitric acid and ammonium nitrate. However, ambient ammonia concentrations are not explicitly simulated by CALPUFF and the user must select an appropriate background concentration. The IWAQM Phase II recommendations suggest typical

ammo nia concentrations are: 10 parts per billion (ppb) for grasslands; 0.5 ppb for forests; and 1 ppb for arid lands during warmer weather. Given the low background concentration over the Gulf of Mexico and as requested by the FLM, Statoil proposes a value of 3 ppb.



# 5.1.5.2 Ozone

Reaction rates in the CALPUFF chemistry algorithms are also influenced by background ozone concentrations. For this analysis, Statoil proposes to use hourly ozone data to represent background concentrations. During hours of missing ozone da ta, a constant background ozone concentration of 65 ppb will be substituted as representative of the average background concentration for this region.



# 5.1.6 Building Downwash

Statoil will not include buildings and structures located on the drilling rig and the a ssociated fleet vessels. Building downwash is the effect of nearby structures on the flow of emissions from their respective sources. Because of the relatively large distance between the emissions and the Class I receptors, building downwash will not be included

.



# 5.1.7 Receptor Grids

The CALPUFF dispersion model simulations assess AQRVs within each Class I area at discrete receptors obtained from the National Park Service. 6 

# In addition to these discrete receptor locations, Statoil may use a receptor grid with 4

- km spacing throughout the CALPUFF modeling domain for AQRV predictions. Statoil may use the 4

- km mesh size receptors to construct plots showing the spatial variation of the calculated parameters throughout the modeling domain.

5 

## There are no Class I increments for CO, and CO does not contribute to visibility impairment.

6 

## http://www2.nature.nps.gov/air/Maps/Receptors/index.cfm

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# Statoil will use these pl ots for diagnostic purposes, as well as to develop the figures presented in the permit application. Comparisons with AQRV criteria will be based on the discrete receptor locations and elevations rather than the domain

- wide gridded receptors.



# 5.1.8 Meteorologica l Data

Preprocessed VISTAS

- BART 4 km Domain 2 CALMET data will be used for modeling. This data was provided by the North Carolina Department of Environment and Natural Resources (NCDENR). Data from 109 surface stations, 10 upper air stations, 9 overwater stations and

96 precipitation stations was used to process the 2001 CALMET data. Data from 100 surface stations, 10 upper air stations, 9 overwater stations and 92 precipitation stations was used to process the 2002 CALMET data. Data from 116 surface stat ions, 10 upper air stations, 9 overwater stations and 103 precipitation stations was used to process the 2003 CALMET data.

This dataset is the most recent version developed by the FLM using the currently approved regulatory version of CALMET (Version 5.8 ). For the current analysis

, the 4

- km mesh size

simulations were used.

CALMET (Version 5.8), the meteorological preprocessor component of the CALPUFF system, was used to combine the MM5 simulation data, surface observations, terrain elevations, and

land u se data into the format required by the dispersion modeling component CALPUFF. In addition to specifying the three

- dimensional wind field, CALMET also estimates the boundary layer parameters used to characterize diffusion and deposition by the dispersion model.

Selected hours of the three

- year CALMET/MM5 three

- dimensional data set were examined by extracting data from the CALMET output files and plotting the meteorological fields with the CALDESK software package. Wind vector plots were examined for diff erent times of year, different times of day, and for all 10 vertical levels.



# 5.2 Modeling Analysis

The impacts on air quality and air AQRVs estimated by CALPUFF will be compared against applicable threshold levels. The two types of threshold levels are: (1) no t to be exceeded levels (i.e., PSD increments) or (2) levels of potential concern (levels that, when exceeded, raise concerns and should be evaluated for their significance and reliability).



# 5.2.1 Increment Consumption

As part of the USEPA’s PSD policy, Class I area allowable concentration increments have been established. The cumulative air quality impact of all new sources in a common region are required to be below the allowable PSD Class I increments at Class I areas. A new source that

causes the cumulative impact of all new sources to exceed a PSD Class I allowable increment may not be allowed to be built.

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# In 1996, the USEPA published a Federal Register notice of proposed Class I area SIL thresholds for single projects. 7 

# These proposed single project SIL s are defined as being approximately 4% of the PSD Class I area increment. If a project’s impact is below the Class I area single project proposed SIL thresholds, then its impacts can be assumed to be insignificant.

If estimated concentrations at Class I areas exceed the proposed single source SIL then Statoil will perform a cumulative PSD Class I increment compliance assessment. Table 5 summarizes the PSD Class I area increments and the single project proposed Class I area SILs that are applicable to t he proposed project. If maximum modeled concentrations exceed the SIL for any pollutant averaging period, then a cumulative analysis for the pollutant would be required. In this case, Statoil would consult with the FLM and EPA to develop the emissions inv entory.

The EPA has not identified a regulatory

- default model capable of calculating secondary PM 2.5



# . Therefore, for the SILs comparison that might trigger a cumulative PM2.5 ana lysis, only primary

emissions of PM 2.5 

# will be used. For all other AQRVs (evaluated by the FLMs), both primary

and sec ondary PM 2.5 

# will be included.

Table 5 . Class I Area SILs and Increments

Pollutant Averaging Period Significance Level ( μ g/m 3 

## ) Class I Increment ( μ g/m 3 

## )

NO 2 

## Annual 0.1 2.5

PM 2.5 

## 24

- hour 0.07 2

Annual 0.06 1



# 5.2.2 AQRVs

5.2.2.1 Visibility

The FLAG workgroup recommends procedures for est imating the visibility impacts due to proposed new sources at Class I areas using refined CA LMET/CALPUFF modeling (FLAG,

201 0). The FLAG visibility metric is the estimated maximum 24

- hour change in extinction ( ∆ b ext 

# ) over clean natural visibility conditio ns (Natural Conditions) at the Class I area. The interpretation of the FLAG thresholds for extinction change over natural background is as

follows:

• 

# If the source’s visibility impact is < 0.4% on all days, the source is considered insignificant

and the FLM will not object to the permit.

7 

## Federal Register: July 23, 1996 (Volume 61, Number 142)

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## • 

# If the source’s visibility impact is < 5% on all days, the FLM will likely not object to the permit.

• 

# If there are days with the source’s visibility impact > 10%, the FLM may object to the permit.

• 

# If there are days in which t he source’s visibility impact are above 5% the frequency, magnitude and duration of the visibility impacts are used to make a significance

determination.

If a source exceeds a specific threshold at a Class I area, then the frequency, magnitude and

duration of the impacts and the reliability and accuracy of the modeling are examined to interpret the modeling results. More recent interpretation of the FLAG procedures for evaluating the visibility impacts estimated by the CALMET/CALPUFF modeling system has al lowed the introduction of extenuating circumstances that account for natural obscuration of visibility and modeling artifacts introduced by the CALMET/CALPUFF modeling system and the combination

of the two.

The FLAG (2010) procedures employ the IMPROVE ext inction equation to calculate b ext 

# (Method 8, invoked with MVISCHECK=1 in CALPOST). This updated equation for extinction uses monthly relatively humidity adjustment factors with relative humidity capped at 95%. It uses annual background aerosol concentra tions recommended by the FLMs for the Class I area of concern, and assesses the visibility using the 98 th 

# percentile modeled values at each receptor. In order to use Method 8, CALPOST Version 6.221 (Level 080724) w ill be used to
post

- process the CALPUFF output files.

For FLAG 2010, a Project’s extinction is calculated using the revised IMPROVE reconstructed mass extinction equation as follows:

b project 

# = 2.2 × f S 

# (RH) × [Small Sulfate] + 4.8 × f L 

# (RH) × [Large Sulfate]
+ 2.4 × f S 

# (RH) × [Small Nitrate] + 5.1 × f L 

# (RH) × [Large Nitrate] + 2.8 × [Small Organic Mass] + 6.1 × [Large Organic Mass] + 10 × [Elemental Carbon] + 1 × [Fine Soil] + 0.6 × [Coarse Mass]
+ 1.7 × f SS 

# (RH) × [Sea Salt] + Rayleigh Scattering (Site Specific) + 0.33 × [NO 2 

# (ppb)] {or as: 0.1755 × [NO 2 

# ( μ g/m 3 

# )]}
Where: [ ] indicates concentrations in μg/m 3 

# f S 

# (RH) = Relative humidity adjustment factor for small sulfate and nitrate
f L 

# (RH) = Relative humidity adjustment factor for large sulfate and nitrate
f SS 

# (RH) = Relative humidity adjustment factor for sea salt For Total Sulfate < 20 μg/m 3 

# : [Large Sulfate] = ([Total Sulfate] / 20 μg/m 3 

# ) × [Total Sulfate] For Total Sulfate ≥ 20 μg/m 3 

# : [Large Sulfate] = [Total Sulfate]
And: [Small Sulfate] = [Total Sulfate]

– [Large Sulfate]

## StatOilGulf Services, LLC Air Quality Analysis Modeling Protocol

14 Project No. 26

- 27189A 

# To calculate large and small nitrate and organic mass, substitute ({Large, Small, Total} {Nitrate, Organic Mass}) for Sulfate.



# 5.2.2.2 Deposition

Acid deposition impacts are represented by total sulfur and total nitrogen deposition at the Class I areas. The FLAG procedures r equire estimation of total sulfur deposition from the CALPUFF

estimated wet and dry SO 2 

# plus sulfate (SO 4 

# ) deposition. For nitrogen, wet and dry deposition from all of the nitrogen species modeled species are included (NO 2 

# , nitric acid, and particulate

ni trate).

The Forest Service (FS) has developed sulfur and deposition thresholds “...below which a land manager can recommend that a permit be issued” (USDA FS, 1989). Although these values vary for different locations, the lowest “green line” sulfur and nitr ogen deposition values are 3 kilograms per hectare per year (kg/ha/yr). More recently, the NPS has posted a document “Guidance on Nitrogen and Sulfur Deposition Analysis Thresholds” on their website. 8 

# The NPS Deposition Analysis Thresholds (DATs) for nit rogen and sulfur deposition are as follows:

• 

# East DAT: 0.010 kg/ha/yr

• 

# West DAT: 0.005 kg/ha/yr

“East” and “West” refer to Class I areas east and west of the Mississippi River. The east DAT is applicable t o the proposed Project. Table 6 lists the sulfur and nitrogen deposition thresholds that the proposed project deposition estimates would be compared against.

Note that because the proposed sources would not emit more than 40 TPY of SO 2 

# , Statoil will not present the sulfur deposition results in the appli cation.

T able 6 . Sulfur and Nitrogen Deposition Thresholds

Threshold Source Average Sulfur Deposition (kg/ha/yr) Average Nitrogen Deposition (kg/ha/yr)

FS Threshold 3.0 3.0

NPS DAT 0.01 0.01

8 

## http://www2.nature.nps.gov/air/Pubs/pdf/flag/nsDATGuidance.pdf

## StatOilGulf Services, LLC Air Quality Analysis Modeling Protocol

Project No. 26

- 2 7189A 15 

# 6 References

FLAG. 2000. “Federal Land Managers’ Air Qual ity Related Values Workgroup (FLAG)”: Phase I Report. USDI

– National Park Service, Air Resources Division, Denver, CO.

FLAG. 2010. “Federal Land Managers’ Air Quality Related Values Workgroup (FLAG)”: Phase I Report

– Revised. USDI

– National Park Service, Air Resources Division, Denver, CO.

IWAQM. 1998. Interagency Workgroup on Air Quality Modeling (IWAQM) Phase 2 “Summary Report and Recommendations for Modeling Long

- Range Transport and Impacts on Regional Visibility.” EPA

- 454/R

- 98

- 019. U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Research Triangle Part, NC.

USEPA. 2003a. Revision to the Guideline on Air Quality Models: Adoption of a Preferred Long Range Transport Model and Other Revisions; Final Rule. 40 CFR Part 51, Federal Register

, Vol. 68, No. 72, Tuesday April 15, 2003, Rule and regulations pp 18440

- 18482.

USEPA. 2003b.“Guidance for Estimating Natural Visibility Conditions Under the Regional Haze Rule”, U.S. Environmental Protection Agency, Resea rch Triangle Park, NC.

USEPA. 1992. “Workbook for Plume Visual Impact Screening and Analysis,” EPA/454/R

- 92

- 023.

USEPA. 1985. “Guidelines for Determination of Good Engineering Practice Stack Height (Technical Support Document for Stack Height Regulatio ns (Revised)),” EPA

- 450/4

- 809

- 023R.

## StatOilGulf Services, LLC Air Quality Analysis Modeling Protocol

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- 27189A 17 

# Figures

## 18 Project No. 26

- 27189A 100 km

200 km

300 km 

## Full Vistas Domain

Closest Lease Block Statoil OCS CALPUFF Domain

Brigantine Wilderness

Chassahowitzka Wilderness Saint Marks Wilderness

Breton Wilderness

700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800

LCC (RPO Projection) Easting, km -1600 -1500 -1400 -1300 -1200 -1100 -1000

-900 -800CC o t g,



# Figure 1. Proposed Modeling Domain

– Statoil OCS

## StatOilGulf Services, LLC Air Quality Analysis Modeling Protocol

Project No. 26

- 27189A 19 

# Appendix A

Proposed CALPUFF Control Parameters

## 20 Statoil OCS EGOM, Transocean Discoverer CALPUFF run, 18 6x108x4km mesh, VISTAS 2003 4km domain 2.

VISTAS CALMET re

- processed by USFS (Tim Allen) . Hourly ozone, 3 ppb NH3. No gridded receptors, only Class I receptors and Class II "25 mile" receptors.

---------------- Run title (3 lines)

------------------------ ------------------

CALPUFF MODEL CONTROL FILE

--------------------------

-------------------------------------------------------------------------------

INPUT GROUP: 0

-- Input and Output File Names

------------- - Default Name Type File Name

------------ ---- --------- CALMET.DAT input * METDAT = *

or ISCMET.DAT input * ISCDAT = *

or PLMMET.DAT input * PLMDAT = *

or

PROFILE.DAT input * PRFDAT = * SURFACE.DAT input * SFCDAT = * RESTARTB.DAT input * RSTARTB= *

-------------------------------------------------------------------------------- CALPUFF.LST output ! PUFLST = statoil.20 03.out ! CONC.DAT output ! CONDAT = statoil.2003.con ! DFLX.DAT output ! DFDAT = statoil.2003.dry ! WFLX.DAT output ! WFDAT = statoil.2003.wet !

VISB.DAT output ! VISDAT = statoil.2003.vis !
TK2D.DAT output * T2DD AT = * RHO2D.DAT output * RHODAT = *
RESTARTE.DAT output * RSTARTE= *

-------------------------------------------------------------------------------- Emission Files

-------------- PTEMARB.DAT input * PTDAT = * VOLEMARB.DAT input * VOLDAT = * BAEMARB.DAT input * ARDAT = * LNEMARB.DAT input * LNDAT = *

-------------------------------------------------------------------------------- Other Files

- ---------- OZONE.DAT input ! OZDAT = ozone/ozone.2001

- 2003.dat ! VD.DAT input * VDDAT = * CHEM.DAT input * CHEMDAT= * H2O2.DAT input * H2O2DAT= * HILL.DAT input * HILDAT= * HILLRCT.DAT input * RCTDAT= * COASTLN.DAT input * CSTDAT= * FLUXBDY.DAT input * BDYDAT= * BCON.DAT input * BCNDAT= *
DEBUG.DAT output * DEBUG = *

MASSFL X.DAT output * FLXDAT= * MASSBAL.DAT output ! BALDAT= statoil.2003.bal !
FOG.DAT output * FOGDAT= *

-------------------------------------------------------------------------------- All file names will be converted to lower case if LCFILES = T
Otherwise, if LCFILES = F, file names will be converted to UPPER CASE

T = lower case ! LCFILES = T !

F = UPPER CASE NOTE: (1) file/path names can be up to 70 characters in length

Provision for multiple input files

----------------------------------

Number of CALMET.DAT files for run (NMETDAT)

Default: 1 ! NMETDAT = 13 !

Number of PTEMARB.DAT files for run (NPTDAT)

Default: 0 ! NPTDAT = 0 !

Number of BAEMARB.DAT files for run (NARDAT)

Default: 0 ! NARDAT = 0 !

Number of VOLEMARB.DAT files for run (NVOLDAT)

Default: 0 ! NVOLDAT = 0 !

!END!

## StatOilGulf Services, LLC Air Quality Analysis Modeling Protocol

Project No. 26

- 27189A 21 ------------- Subgroup (0a)

-------------

The following CALMET.DAT filenames are processed in sequence if NMETDAT>1

Default Name Type File Name

------------ ---- --------- ! METDAT = /home/data/calm et/vistas/2002/subdomain2_4km/met2002

- dom2

- dec.dat ! !END! ! METDAT = /home/data/calmet/vistas/2003/subdomain2_4km/met2003

- dom2

- jan.dat ! !END! ! METDAT = /home/data/calmet/vistas/2003/subdomain2_4km/met2003

- dom2

- feb.dat ! !END!
! METDAT = /home/data/calme t/vistas/2003/subdomain2_4km/met2003

- dom2

- mar.dat ! !END! ! METDAT = /home/data/calmet/vistas/2003/subdomain2_4km/met2003

- dom2

- apr.dat ! !END! ! METDAT = /home/data/calmet/vistas/2003/subdomain2_4km/met2003

- dom2

- may.dat ! !END!
! METDAT = /home/data/calmet /vistas/2003/subdomain2_4km/met2003

- dom2

- jun.dat ! !END! ! METDAT = /home/data/calmet/vistas/2003/subdomain2_4km/met2003

- dom2

- jul.dat ! !END! ! METDAT = /home/data/calmet/vistas/2003/subdomain2_4km/met2003

- dom2

- aug.dat ! !END!
! METDAT = /home/data/calmet/ vistas/2003/subdomain2_4km/met2003

- dom2

- sep.dat ! !END! ! METDAT = /home/data/calmet/vistas/2003/subdomain2_4km/met2003

- dom2

- oct.dat ! !END! ! METDAT = /home/data/calmet/vistas/2003/subdomain2_4km/met2003

- dom2

- nov.dat ! !END!
! METDAT = /home/data/calmet/v istas/2003/subdomain2_4km/met2003

- dom2

- dec.dat ! !END!

--------------------------------------------------------------------------------

INPUT GROUP: 1

-- General run control parameters

--------------

Option to run all periods found

in the met. f ile (METRUN) Default: 0 ! METRUN = 0 !

METRUN = 0

- Run period explicitly defined below

METRUN = 1

- Run all periods in met. file

Starting date: Year (IBYR)

-- No default ! IBYR = 2002 ! * start 2 days early * (used only if Month (IBMO)

-- No default ! IBMO = 12 ! METRUN = 0) Day (IBDY)

-- No default ! IBDY = 30 !
Hour (IBHR)

-- No default ! IBHR = 01 !

Base time zone (XBTZ)

-- No default ! XBTZ = 5.0 !
PST = 8., MST = 7.
CST = 6., EST = 5.

Length of run (hours) (IRLG)

-- No default ! IRLG = 8784 ! * 364+2 days*

Number of chemical species (NSPEC)

Defaul t: 5 ! NSPEC = 9 !

Number of chemical species
to be emitted (NSE) Default: 3 ! NSE = 9 !

Flag to stop run after SETUP phase (ITEST) Default: 2 ! ITEST = 2 !
(Used to allow chec king of the model inputs, files, etc.)

ITEST = 1

- STOPS program after SETUP phase

ITEST = 2

- Continues with execution of program

after SETUP

Restart Configuration:

Control flag (MRESTART) Default: 0 ! MRESTART = 0 !

0 = Do not read or write a restart file 1 = Read a restart file at the beginning of

the run 2 = Write a restart file during run

3 = Read a restart file at beginning of run and write a restart file during run

Number of periods in Restart
output cycle (NRESPD) Default: 0 ! NRESPD = 0 !

0 = File written only at last period >0 = File updated e very NRESPD periods

Meteorological Data Format (METFM)

Default: 1 ! METFM = 1 !

METFM = 1

- CALMET binary file (CALMET.MET)

METFM = 2

- ISC ASCII file (ISCMET.MET)

## 22 METFM = 3

- AUSPLUME ASCII file (PLMMET.MET)

METFM = 4

- CTDM plus tower file (PROFILE.DAT) and surface parameters file (SURFACE.DAT)

METFM = 5

- AERMET tower file (PROFILE.DAT) and
surface para meters file (SURFACE.DAT)

Meteorological Profile Data Format (MPRFFM)
(used only for METFM = 1, 2, 3)

Default: 1 ! MPRFFM = 1 !

MPRFFM = 1

- CTDM plus tower file (PROFILE.DAT)

MPRFFM = 2

- AERMET tower file (PROFILE.DAT)

PG sigma

- y is adjusted by the factor (AVET/PGTIME)**0.2 Averaging Time (minutes) (AVET)

Default: 60.0 ! AVET = 60. ! PG Averaging Time (minutes) (PG TIME)

Default: 60.0 ! PGTIME = 60. !

!END!

-------------------------------------------------------------------------------

INPUT GROUP: 2

-- Technical options

--------------

Vertical distribution used in the
near field (MGAUSS) Default: 1 ! MGAUSS = 1 !

0 = uniform

1 = Gaussian

Terrain adjustment method
(MCTADJ) Default: 3 ! MCTADJ = 3 ! 0 = no adjustment

1 = ISC

- type of terrain adjustment 2 = simple, CALPUFF

- type of terrain adjustment 3 = partial plume path adjustment

Subgrid

- scale complex terrain
flag (MCTSG) Default: 0 ! MCTSG = 0 !

0 = not modeled

1 = modeled

Near

- field puffs modeled as
elongated 0 (MSLUG) Default: 0 ! MSLUG = 0 !

0 = no 1 = yes (slug model used)

Transitional plume rise modeled ?
(MTRANS ) Default: 1 ! MTRANS = 1 ! 0 = no (i.e., final rise only) 1 = yes (i.e., transitional rise computed)

Stack tip downwash? (MTIP) Default: 1 ! MTIP = 1 !
0 = no (i.e., no s tack tip downwash) 1 = yes (i.e., use stack tip downwash)

Method used to simulate building
downwash? (MBDW) Default: 1 ! MBDW = 2 !

1 = ISC method

2 = PRIME method

Vertical wind shear mod eled above stack top? (MSHEAR) Default: 0 ! MSHEAR = 0 ! 0 = no (i.e., vertical wind shear not modeled) 1 = yes (i.e., vertical wind shear modeled)

Puff splitting allowed? (MSPLIT) Default: 0 ! M SPLIT = 0 ! 0 = no (i.e., puffs not split) 1 = yes (i.e., puffs are split)

Chemical mechanism flag (MCHEM) Default: 1 ! MCHEM = 1 !

0 = chemical transformation not modeled 1 = transformation rates comput ed internally (MESOPUFF II scheme)

2 = user

- specified transformation rates used 3 = transformation rates computed internally (RIVAD/ARM3 scheme) 4 = secondary organic aerosol formation computed (MESOPUFF II scheme for OH)

Aque ous phase transformation flag (MAQCHEM) (Used only if MCHEM = 1, or 3) Default: 0 ! MAQCHEM = 0 ! 0 = aqueous phase transformation not modeled 1 = transformation rates adjusted for aqueous phase reactions

## StatOilGulf Services, LLC Air Quality Analysis Modeling Protocol

Project No. 26

- 27189A 23 Wet remova l modeled ? (MWET) Default: 1 ! MWET = 1 !

0 = no 1 = yes

Dry deposition modeled ? (MDRY) Default: 1 ! MDRY = 1 !

0 = no 1 = yes (dry deposition method specified for each species in Input Group 3)

Gravitational settling (plume tilt)
modeled ? (MTILT) Default: 0 ! MTILT = 0 !

0 = no 1 = yes (puff center falls at the gravitational settling velocity for 1 particle sp ecies)

Restrictions:

- MDRY = 1

- NSPEC = 1 (must be particle species as well)

- sg = 0 GEOMETRIC STANDARD DEVIATION in Group 8 is set to zero for a single particle diameter

Method u sed to compute dispersion
coefficients (MDISP) Default: 3 ! MDISP = 3 !

1 = dispersion coefficients computed from measured values of turbulence, sigma v, sigma w 2 = dispersion coefficients from int ernally calculated sigma v, sigma w using micrometeorological variables
(u*, w*, L, etc.) 3 = PG dispersion coefficients for RURAL areas (computed using

the ISCST multi

- segment approximation) and MP coefficients in

urban areas 4 = same as 3 except PG coefficients computed using
the MESOPUFF II eqns. 5 = CTDM sigmas used for stable and neutral conditions. For unstable conditions, sigmas are computed as in
MDISP = 3, described above. MDISP = 5 assumes that

measured values are read

Sigma

- v/sigma

- theta, sigma

- w measurements used? (MTURBVW) (Used only if MDISP = 1 or 5) Default: 3 ! MTURBVW = 3 ! 1 = use sigma

- v or sigma

- theta measurements from PROFILE.DAT to compute sigma

- y (valid for METFM = 1, 2, 3, 4, 5) 2 = use sigma

- w measurements from PROFILE.DAT to compute sigma

- z (valid for METFM = 1, 2, 3, 4, 5) 3 = use both sigma

- (v/theta) and sigma

- w from PROFILE.DAT to compute sigma

- y and sigma

- z (valid for METFM = 1, 2, 3, 4, 5) 4 = use sigma

- theta measurements from PLMMET.DAT to compute sigma

- y (v alid only if METFM = 3)

Back

- up method used to compute dispersion

when measured turbulence data are missing (MDISP2) Default: 3 ! MDISP2 = 3 ! (used only if MDISP = 1 or 5) 2 = dispersion coefficients from internally calculated sigma v, sigma w using micrometeorological variables
(u*, w*, L, etc.) 3 = PG dispersion coefficients for RURAL areas (computed using

the ISCST multi

- segment approximation) and MP coe fficients in

urban areas 4 = same as 3 except PG coefficients computed using
the MESOPUFF II eqns.

[DIAGNOSTIC FEATURE] Method used for Lagrangian timescale for Sigma

- y (used only if MDISP=1,2 or MDISP2=1,2)
(MTAULY) Default: 0 ! MTAULY = 0 !
0 = Draxler default 617.284 (s) 1 = Computed as Lag. Length / (.75 q)

-- after SCIPUFF 10 < Direct user input (s)

-- e.g., 306.9

[DIAGNOSTI C FEATURE]

Method used for Advective

- Decay timescale for Turbulence (used only if MDISP=2 or MDISP2=2)

## 24 (MTAUADV) Default: 0 ! MTAUADV = 0 !

0 = No turbulence advection
1 = Computed (OPTION N OT IMPLEMENTED) 10 < Direct user input (s)

-- e.g., 800

Method used to compute turbulence sigma

- v & sigma

- w using micrometeorological variables (Used only if MDISP = 2 or MDISP2 = 2)
(MCTURB) Defau lt: 1 ! MCTURB = 1 !

1 = Standard CALPUFF subroutines

2 = AERMOD subroutines

PG sigma

- y,z adj. for roughness? Default: 0 ! MROUGH = 0 !
(MROUGH)

0 = no 1 = yes

Partial plume penetration of Default: 1 ! MPARTL = 1 !

elevated inversion?
(MPARTL)

0 = no 1 = yes

Strength of temperature inversion Default: 0 ! MTINV = 0 ! provided in PROFILE.DAT extended records?
(MTINV)

0 = no (computed from measured/default gradients)
1 = yes

PDF used for dispersion under convective conditions?

Default: 0 ! MPDF = 0 !
(MPDF)

0 = no 1 = yes

Sub

- Grid TI BL module used for shore line?

Default: 0 ! MSGTIBL = 0 !
(MSGTIBL)

0 = no 1 = yes

Boundary conditions (concentration) modeled?

Default: 0 ! MBCON = 0 !
(MBCON)

0 = no 1 = yes, using formatted BCON.DAT file 2 = yes, using unformatted CONC.DAT file

Note: MBCON > 0 requires that the last species modeled be 'BCON'. Mass is placed in species BCON when generating boundary condition puffs so that clean air entering the modeling domain can be simulated in the same way as polluted air. Specify zero emission of species BCON for all regular sources.

Individual source contributions saved?

Default: 0 ! MSOURCE = 0 !
(MSOURCE)

0 = no 1 = yes

Analyses of fogging and icing impacts due to emissions from arrays of mechanical ly

- forced cooling towers can be performed using CALPUFF in conjunction with a cooling tower emissions processor (CTEMISS) and its associated postprocessors. Hourly emissions of water vapor and temperature from each cooling tower

cell a re computed for the current cell configuration and ambient conditions by CTEMISS. CALPUFF models the dispersion of these emissions and provides cloud information in a specialized format for further analysis. Output to FOG.DAT is provided in either
'plume mode' or 'receptor mode' format.

Configure for FOG Model output?

Default: 0 ! MFOG = 0 !
(MFOG)

0 = no 1 = yes

- report results in PLUME Mode format

2 = yes

- report results in RECEPTOR Mode format

Test options specified to see if
they conform to regulatory

## StatOilGulf Services, LLC Air Quality Analysis Modeling Protocol

Project No. 26

- 27189A 25 values? (MREG) Default: 1 ! MREG = 1 !

0 = NO checks are made 1 = Technical options m ust conform to USEPA Long Range Transport (LRT) guidance

METFM 1 or 2 AVET 60. (min)
PGTIME 60. (min)

MGAUSS 1

MCTADJ 3

MTRANS 1

MTIP 1 MCHEM 1 or 3 (if modeling SOx, NOx)

MWET 1

MDRY 1

MDISP 2 or 3
MPDF 0 if MDISP=3

1 if MDISP=2

MROUGH 0

MPARTL 1
SYTDEP 550. (m)

MHFTSZ 0
SVMIN 0.5 (m /s)

!END!

-------------------------------------------------------------------------------

INPUT GROUP: 3a, 3b

-- Species list

-------------------

------------ Subgroup (3a)

------------

The following species are modeled:

! CSPEC = SO2 ! !END!

! CSPEC = SO4 ! !END!

! CSPEC = NOX ! !END!

! CSPEC = HNO3 ! !END!

! CSPEC = NO3 ! !END!

! CSPEC = EC ! !END!

! CSPEC = SOA ! !END!

! CSPEC = PMC ! !END!

! CSPEC = PMF ! !END!

Dry OUTPUT GROUP

SPECIES MODELED EMITTED DEPOSITED NUMBER

NAME (0=NO, 1=YES) (0=NO, 1=YES) (0=NO, (0=NONE, (Limit: 12 1=COMPUTED

- GAS 1=1st CGRUP,

Characters 2=COMPUTED

- PARTICLE 2=2nd CGRUP, in length ) 3=USER

- SPECIFIED) 3= etc.)

! SO2 = 1, 1, 1, 0 !
! SO4 = 1, 1, 2, 0 !

! NOX = 1, 1, 1, 0 !
! HNO3 = 1, 0, 1, 0 !
! NO3 = 1, 1, 2, 0 !
! EC = 1, 1, 2, 0 !
! SOA = 1, 1, 2, 0 !
! PMC = 1, 1, 2, 0 !
! PMF = 1, 1, 2, 0 !

!END!

Note: The last species in (3a) must be 'BCON' when using the boundary condition option (MBCON > 0). Species BCON should typically be modeled as inert (no chem transformation or
removal).

------ ------- Subgroup (3b)

-------------

The following names are used for Species

- Groups in which results for certain species are combined (added) prior to output. The CGRUP name will be used as the species name in output files.

Use this feature to mod el specific particle

- size distributions by treating each size

- range as a separate species.
Order must be consistent with 3(a) above.

-------------------------------------------------------------------------------

## 26 INPUT GROUP: 4

-- Map Projection and Grid control parameters

--------------

Projection for all (X,Y):

-------------------------

Map projection
(PMAP) Default: UTM ! PMAP = LCC !

UTM : Universal Transverse Mercator

TTM : Tangen tial Transverse Mercator

LCC : Lambert Conformal Conic

PS : Polar Stereographic EM : Equatorial Mercator LAZA : Lambert Azimuthal Equal Area

False Easting and Northing (km) at the projection origin
(Used only if PMAP= TTM, LCC, or LAZA)
(FEAST) Default=0.0 ! FEAST = 0.000 !
(FNORTH) Default=0.0 ! FNORTH = 0.000 !

UTM zone (1 to 60) (Used only if PMAP=UTM)
(IUTMZN) N o Default ! IUTMZN = 0 !

Hemisphere for UTM projection? (Used only if PMAP=UTM)
(UTMHEM) Default: N ! UTMHEM = N ! N : Northern hemisphere projection S : Southern hemisphere projectio n

Latitude and Longitude (decimal degrees) of projection origin (Used only if PMAP= TTM, LCC, PS, EM, or LAZA)
(RLAT0) No Default ! RLAT0 = 40.0N !
(RLON0) No Default ! RLON0 = 97.0W !

TTM : RLON0 identifies central (true N/S) meridian of projection

RLAT0 selected for convenience LCC : RLON0 identifies central (true N/S) meridian of projection

RLAT0 selected for convenience

PS : RLON0 identifies central (grid N/S) meridian of projection

RLAT0 selected for convenience EM : RLON0 identifies central meridian of projection RLAT0 is REPLACED by 0.0N (Equator)

LAZA: RLON0 identifie s longitude of tangent

- point of mapping plane RLAT0 identifies latitude of tangent

- point of mapping plane

Matching parallel(s) of latitude (decimal degrees) for projection (Used only if PMAP= LCC or PS)
(XLAT1) No Default ! XLAT1 = 33.0N !
(XLAT2) No Default ! XLAT2 = 45.0N !

LCC : Projection cone slices through Earth's surface at XLAT1 and XLAT2 PS : Projection plane slices through Earth at XLAT1
(XLAT2 is not used)

---------- Note: Latitudes and longitudes should be positive, and include a letter N,S,E, or W indicating north or south latitude, and east or west longitude. For example,

35. 9 N Latitude = 35.9N 118.7 E Longitude = 118.7E

Datum

- region

------------

The Datum

- Region for the coordinates is identified by a character string. Many mapping products currently available use the model of the

Ea rth known as the World Geodetic System 1984 (WGS

- 84). Other local models may be in use, and their selection in CALMET will make its output consistent with local mapping products. The list of Datum

- Regions with official transformation param eters is provided by the National Imagery and Mapping Agency (NIMA).

NIMA Datum

- Regions(Examples)

------------------------------------------------------------------------------ WGS

- 84 WGS

- 84 Reference Ellipsoid and Geoid, Global c overage (WGS84)

NAS

- C NORTH AMERICAN 1927 Clarke 1866 Spheroid, MEAN FOR CONUS (NAD27)

NAR

- C NORTH AMERICAN 1983 GRS 80 Spheroid, MEAN FOR CONUS (NAD83)

NWS

- 84 NWS 6370KM Radius, Sphere

## StatOilGulf Services, LLC Air Quality Analysis Modeling Protocol

Project No. 26

- 27189A 27 ESR

- S ESRI REFERENCE 6371KM Radius, Sphere

Datum

- region for output coordinates
(DATUM) Default: WGS

- G ! DATUM = NWS

- 84 !

*** Same as MM5 ***

METEOROLOGICAL Grid:

Rectangular grid defined for project ion PMAP, with X the Easting and Y the Northing coordinate

No. X grid cells (NX) No default ! NX = 263 ! No. Y grid cells (NY) No default ! NY = 206 ! No. vertical layers (NZ) No default ! NZ = 10 !

Grid spacing (DGRIDKM) No default ! DGRIDKM = 4 !

Units: km

Cell face heights
(ZFACE(nz+1)) No defaults

Units: m
! ZFACE =0.,20.,40.,80.,160.,320.,640.,1200.,2000.,3000.,4000. !

Reference Coordinates

of SOUTHWEST corner of grid cell(1, 1):

X coordinate (XORIGKM) No default ! XORIGKM = 721.995 ! Y coordinate (YORIGKM) No default ! YORIGKM =

- 1598.000 !
Units: km

COMPUTATIONAL Grid:

The computational grid is identical to or a subset of the MET. grid.

The lower lef t (LL) corner of the computational grid is at grid point (IBCOMP, JBCOMP) of the MET. grid. The upper right (UR) corner of the computational grid is at grid point (IECOMP, JECOMP) of the MET. grid. The grid spacing of the computational grid is the same as the MET. grid.

X index of LL corner (IBCOMP) No default ! IBCOMP = 1 !
(1 <= IBCOMP <= NX)

Y index of LL corner (JBCOMP) No default ! JBCOMP = 56 !
(1 <= JBCOMP <= N Y)

X index of UR corner (IECOMP) No default ! IECOMP = 186 !
(1 <= IECOMP <= NX)

Y index of UR corner (JECOMP) No default ! JECOMP = 163 !
(1 <= JECOMP <= NY)

SAMPLING Grid (GRIDDED R ECEPTORS): The lower left (LL) corner of the sampling grid is at grid point (IBSAMP, JBSAMP) of the MET. grid. The upper right (UR) corner of the sampling grid is at grid point (IESAMP, JESAMP) of the MET. grid. The sampling grid must be identical to or a subset of the computational grid. It may be a nested grid inside the computational grid. The grid spacing of the sampling grid is DGRIDKM/MESHDN.

Logical flag indicating if gridded
receptors are used (LSAMP) Default: T ! LSAMP = F ! (T=yes, F=no)

X index of LL corner (IBSAMP) No default ! IBSAMP = 1 !

(IBCOMP <= IBSAMP <= IECOMP)

Y index of LL corner (JBSAMP) No default ! JBSAMP = 56 !

(JBCOMP <= JBSAMP <= JECOMP)

X index of UR corner (IESAMP) No default ! IESAMP = 186 !

(IBCOMP <= IESAMP <= IECOMP)

Y index of UR corner (JESAMP) No default ! JESAMP = 163 !

(JBCOMP <= JESAMP <= JECOMP )

Nesting factor of the sampling

grid (MESHDN) Default: 1 ! MESHDN = 1 ! (MESHDN is an integer >= 1)

!END!

-------------------------------------------------------------------------------

## 28 INPUT GROUP: 5

-- Output Options

-------------- * *

FILE DEFAULT VALUE VALUE THIS RUN

---- ------------- --------------

C oncentrations (ICON) 1 ! ICON = 1 !
Dry Fluxes (IDRY) 1 ! IDRY = 1 !
Wet Fluxes (IWET) 1 ! IWET = 1 ! 2D Temperature (IT2D) 0 ! IT2D = 0 ! 2D Density (IRHO) 0 ! IRHO = 0 ! Relative Humidity (IVIS) 1 ! IVIS = 1 !

(RH file is required for
VISIBILITY analyses)

Use data compression option in output file?
(LCOMPRS) Default: T ! LCOMPRS = T !

* 0 = Do not create file, 1 = create file

QA PLOT FILE OUTPUT OPTION:

Create a standard series of output files (e.g.

l ocations of sources, receptors, grids ...) suitable for plotting?
(IQAPLOT) Default: 1 ! IQAPLOT = 1 !

0 = no 1 = yes

DIAGNOSTIC MASS FLUX OUTPUT OPTIONS:

Mass flux across specifi ed boundaries for selected species reported hourly?
(IMFLX) Default: 0 ! IMFLX = 0 !

0 = no 1 = yes (FLUXBDY.DAT and MASSFLX.DAT filenames are specified in Input Group 0)

Mass balance for each species
reported hourly?
(IMBAL) Default: 0 ! IMBAL = 1 !

0 = no 1 = yes (MASSBAL.DAT filename is specified in Input Group 0)

LINE PRINTER OUT PUT OPTIONS:

Print concentrations (ICPRT) Default: 0 ! ICPRT = 0 ! Print dry fluxes (IDPRT) Default: 0 ! IDPRT = 0 !
Print wet fluxes (IWPRT) Default: 0 ! IWPRT = 0 !
(0 = Do no t print, 1 = Print)

Concentration print interval (ICFRQ) in hours Default: 1 ! ICFRQ = 24 ! Dry flux print interval (IDFRQ) in hours Default: 1 ! IDFRQ = 1 !
Wet flux p rint interval (IWFRQ) in hours Default: 1 ! IWFRQ = 1 !

Units for Line Printer Output
(IPRTU) Default: 1 ! IPRTU = 1 !

for for Concentration Deposition
1 = g/m**3 g/m**2/s 2 = mg/m**3 mg/m**2/s 3 = ug/m**3 ug/m**2/s 4 = ng/m**3 ng/m**2/s

5 = Odour Units

Mes sages tracking progress of run

written to the screen ?
(IMESG) Default: 2 ! IMESG = 2 !

0 = no 1 = yes (advection step, puff ID) 2 = yes (2003JJJHH, # old puffs, # emitted puffs)

SPECIES (or GROUP for combined species) LIST FOR OUTPUT OPTIONS

---- CONCENTRATIONS

---- ------ DRY FLUXES

------ ------ WET FLUXES

------ -- MASS FLUX

-- SPECIES

## StatOilGulf Services, LLC Air Quality Analysis Modeling Protocol

Project No. 26

- 27189A 29 /GROUP PRINTED? SAVED ON DISK? PRINTED? SAVED ON DISK? PRINTED? SAVED ON DISK? SAVED ON DISK?

------- ------------------------ ------------------------ ------------------------ --------------- ! SO2 = 0, 1, 0, 1, 0, 1, 0 !
! NOX = 0, 1, 0, 1, 0, 1, 0 !
! HNO3 = 0, 1, 0, 1, 0, 1, 0 !
! SO4 = 0, 1, 0, 1, 0, 1, 0 !
! NO3 = 0, 1, 0, 1, 0, 1, 0 !
! EC = 0, 1, 0, 1, 0, 1, 0 !
! SOA = 0, 1, 0, 1, 0, 1, 0 !
! PMC = 0, 1, 0, 1, 0, 1, 0 !
! PMF = 0, 1, 0, 1, 0, 1, 0 !

Not e: Species BCON (for MBCON > 0) does not need to be saved on disk.

OPTIONS FOR PRINTING "DEBUG" QUANTITIES (much output)

Logical for debug output
(LDEBUG) Default: F ! LDEBUG = F !

First puff to track
(IPFDEB) Default: 1 ! IPFDEB = 1 !

Number of puffs to track
(NPFDEB) Default: 1 ! NPFDEB = 1 !

Met. period to start output
(NN1) Default: 1 ! NN1 = 1 !

Met. period to end output
(NN2) Default: 10 ! NN2 = 10 !

!END!

------------------------------------------------------------------------ -------

INPUT GROUP: 6a, 6b, & 6c

-- Subgrid scale complex terrain inputs

-------------------------

--------------- Subgroup (6a)

--------------- Number of terrain features (NHILL) Default: 0 ! NHILL = 0 !

Number of special com plex terrain
receptors (NCTREC) Default: 0 ! NCTREC = 0 !

Terrain and CTSG Receptor data for CTSG hills input in CTDM format ?
(MHILL) No Default ! MHILL = 2 ! 1 = Hill and Receptor data created
by CTDM processors & read from

HILL.DAT and HILLRCT.DAT files 2 = Hill data created by OPTHILL & input below in Subgroup (6b); Receptor data in Subgroup (6c)

Factor to convert horizontal dimensions Default: 1.0 ! XHILL2M = 0. !
to meters (MHILL=1)

Factor to convert vertical dimensions Default: 1.0 ! ZHILL2M = 0. !
to meters (MHILL=1)

X

- origin of CTDM system relative t o No Default ! XCTDMKM = 0.0E00 ! CALPUFF coordinate system, in Kilometers (MHILL=1)

Y

- origin of CTDM system relative to No Default ! YCTDMKM = 0.0E00 ! CALPUFF coordinate system, in Kilometers (MHILL=1)

! END !

--- ------------ Subgroup (6b)

--------------- 1 **

HILL information

HILL XC YC THETAH ZGRID RELIEF EXPO 1 EXPO 2 SCALE 1 SCALE 2 AMAX1

AMAX2

NO. (km) (km) (deg.) (m) (m) (m) (m) (m) (m) (m)
(m)

---- ---- ---- ------ ----- ------ ------ ------ ------- ------- ----- -

----

## 30 --------------- Subgroup (6c)

---------------

COMPLEX TERRAIN REC EPTOR INFORMATION

XRCT YRCT ZRCT XHH
(km) (km) (m)

------ ----- ------ ----

------------------- 1 Description of Complex Terr ain Variables:
XC, YC = Coordinates of center of hill THETAH = Orientation of major axis of hill (clockwise from
North) ZGRID = Height of the 0 of the grid above mean sea

level RELIEF = Height of the crest of the hill above the grid elevation

EXPO 1 = Hill

- shape exponent for the major axis

EXPO 2 = Hill

- shape exponent for the major axis SCALE 1 = Horizontal length scale along the major axis SCALE 2 = Horizontal length scale along the minor axis AMAX = Maximum allowed axis length for the major axis BMAX = Maximum allowed axis length for the major axis

XRCT, YRCT = Coordinates of the complex terra in receptors ZRCT = Height of the ground (MSL) at the complex terrain

Receptor XHH = Hill number associated with each complex terrain receptor
(NOTE: MUST BE ENTERED AS A REAL NUMBER)

* * NOTE: DATA for each hill and CTSG receptor are treated as a separate input subgroup and therefore must end with an input group terminator.

-------------------------------------------------------------------------------

INPUT GROUP: 7

-- Chemical parameters for dry deposition of gases

--------------

SPECIES DIFFUSIVITY ALPHA STAR REACTIVITY MESOPHYLL RESISTANCE HENRY'S LAW

COEFFICIENT
NAME (cm**2/s) (s/cm) (dimensionless)

------- ----------- ---------- ---------- -------------------- ---------------------

--

! SO2 = 0.1509, 1000., 8., 0., 0.04 !

! NOX = 0.1 656, 1., 8., 5., 3.5 !
! HNO3 = 0.1628, 1., 18., 0., 0.00000008 !

!END!

------------------------------------------------------------------------------- INPUT GROUP: 8

-- S ize parameters for dry deposition of particles

--------------

For SINGLE SPECIES, the mean and standard deviation are used to compute a deposition velocity for NINT (see group 9) size

- ranges, and these are then averaged to obtain a mean dep osition velocity.

For GROUPED SPECIES, the size distribution should be explicitly specified (by the 'species' in the group), and the standard deviation

for each should be entered as 0. The model will then use the deposition velocity f or the stated mean diameter.

SPECIES GEOMETRIC MASS MEAN GEOMETRIC STANDARD

NAME DIAMETER DEVIATION (microns) (microns)

------- ------------------- ------------------ ! SO4 = 0.48, 2.0 !
! NO3 = 0.48, 2.0 !
! EC = 0.48, 2.0 !
! SOA = 0.48, 2 .0 !
! PMC = 7.0, 2.0 !
! PMF = 0.48, 2.0 !

!END!

-------------------------------------------------------------------------------

INPUT GROUP: 9

-- Miscellaneous dry depositio n parameters

--------------

Reference cuticle resistance (s/cm)

## StatOilGulf Services, LLC Air Quality Analysis Modeling Protocol

Project No. 26

- 27189A 31 (RCUTR) Default: 30 ! RCUTR = 30.0 ! Reference ground resistance (s/cm)
(RGR) Default: 10 ! RGR = 10.0 ! Reference pollutant reactivity
(REACTR) Default: 8 ! REACTR = 8.0 !

Number of particle

- size intervals used to evaluate effective particle deposition velocity
(NINT) Default: 9 ! NINT = 9 !

Vegetation state in unirrigated areas
(IVEG) Default: 1 ! IVEG = 1 ! IVEG=1 for active and unstressed vegetation IVEG=2 for active and stressed vegetation

IVEG=3 for inactive vegetation

!END!

-------------------------------------------------------------------------------

INPUT GROUP: 10

-- Wet Deposition Parameters

---------------

Sc avenging Coefficient

-- Units: (sec)**(

- 1)

Pollutant Liquid Precip. Frozen Precip.

--------- -------------- -------------- ! SO2 = 3.0E

- 05, 0.0E00 !

! SO4 = 1.0E

- 04, 3.0E

- 05 !
! NOX = 0.0E00, 0.0E00 !

! HNO3 = 6.0E

- 05, 0.0E00 !

! NO3 = 1.0E

- 04, 3.0E

- 05 !

! EC = 1.0E

- 04, 3.0E

- 05 !

! SOA = 1.0E

- 04, 3.0E

- 05 !

! PMC = 1.0E

- 04, 3.0E

- 05 !

! PMF = 1.0E

- 04, 3.0E

- 05 !

!END!

-------------------------------------------------------------------------------

INPUT GROUP: 11

- - Chemistry Parameters

---------------

Ozone data input option (MOZ) Default: 1 ! MOZ = 1 ! (Used only if MCHEM = 1, 3, or 4)
0 = use a monthly background ozone value 1 = read hourly ozone concentrations from

the OZONE.DAT data file

Monthly ozone concentrations (Used only if MCHEM = 1, 3, or 4 and MOZ = 0 or MOZ = 1 and all hourly O3 data missing) (BCKO3) in ppb Default: 12*80. ! BCKO3 = 12*65. !

M onthly ammonia concentrations (Used only if MCHEM = 1, or 3) (BCKNH3) in ppb Default: 12*10. ! BCKNH3 = 12*3.0 !

Nighttime SO2 loss rate (RNITE1) in percent/hour Default: 0.2 ! RNITE1 = .2 !

Nighttime NOx loss rate (RNITE2) in percent/hour Default: 2.0 ! RNITE2 = 2.0 !

Nighttime HNO3 formation rate (RNITE3) in percent/hour Default: 2.0 ! RNITE3 = 2.0 !

H2 O2 data input option (MH2O2) Default: 1 ! MH2O2 = 0 ! (Used only if MAQCHEM = 1)
0 = use a monthly background H2O2 value 1 = read hourly H2O2 concentrations from

the H2O2.DAT data file

Monthly H2O2 co ncentrations (Used only if MQACHEM = 1 and MH2O2 = 0 or MH2O2 = 1 and all hourly H2O2 data missing) (BCKH2O2) in ppb Default: 12*1. ! BCKH2O2 = 12*1.0 !

--- Data for SECONDARY ORGANIC AEROSOL (SOA) Option
( used only if MCHEM = 4)

## 32 The SOA module uses monthly values of: Fine particulate concentration in ug/m^3 (BCKPMF) Organic fraction of fine particulate (OFRAC)
VOC / NOX ratio (after reaction) (VCNX)

to ch aracterize the air mass when computing

the formation of SOA from VOC emissions. Typical values for several distinct air mass types are:

Month 1 2 3 4 5 6 7 8 9 10 11 12 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Clean Continental

BCKPMF 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1.

OFRAC .15 .15 .20 .20 .20 .20 .20 .20 .20 .20 .20 .15

VCNX 50. 50. 50. 50. 50. 50 . 50. 50. 50. 50. 50. 50.

Clean Marine (surface)

BCKPMF .5 .5 .5 .5 .5 .5 .5 .5 .5 .5 .5 .5

OFRAC .25 .25 .30 .30 .30 .30 .30 .30 .30 .30 .30 .25

VCNX 50. 50. 50. 50. 50. 50. 5 0. 50. 50. 50. 50. 50.

Urban

- low biogenic (controls present)

BCKPMF 30. 30. 30. 30. 30. 30. 30. 30. 30. 30. 30. 30.

OFRAC .20 .20 .25 .25 .25 .25 .25 .25 .20 .20 .20 .20

VCNX 4. 4. 4. 4 . 4. 4. 4. 4. 4. 4. 4. 4.

Urban

- high biogenic (controls present)

BCKPMF 60. 60. 60. 60. 60. 60. 60. 60. 60. 60. 60. 60.

OFRAC .25 .25 .30 .30 .30 .55 .55 .55 .35 .35 .35 .25

VCNX 15 . 15. 15. 15. 15. 15. 15. 15. 15. 15. 15. 15.

Regional Plume

BCKPMF 20. 20. 20. 20. 20. 20. 20. 20. 20. 20. 20. 20.

OFRAC .20 .20 .25 .35 .25 .40 .40 .40 .30 .30 .30 .20

VCNX 15. 15. 15. 15. 15. 15. 15. 15. 15. 15. 15. 15.

Urban

- no controls present

BCKPMF 100. 100. 100. 100. 100. 100. 100. 100. 100. 100. 100. 100.

OFRAC .30 .30 .35 .35 .35 .55 .55 .55 .35 .35 .35 .30

VCNX 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2.

Default: Clean Continental
! BCKPMF = 1.00, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00 !
! OFRAC = 0.15, 0.15, 0.20, 0.20, 0.20, 0.20, 0.20, 0.20, 0.20, 0.20, 0.20, 0. 20 !
! VCNX = 50.0, 50.0, 50.0, 50.0, 50.0, 50.0, 50.0, 50.0, 50.0, 50.0, 50.0, 50.0 !

!END!

-------------------------------------------------------------------------------

INPUT GROUP: 12

-- Misc. Dispersion and Computational Parameters

--------- ------

Horizontal size of puff (m) beyond which

time

- dependent dispersion equations (Heffter) are used to determine sigma

- y and sigma

- z (SYTDEP) Default: 550. ! SYTDEP = 550.0 !

Switch for using Heffte r equation for sigma z
as above (0 = Not use Heffter; 1 = use Heffter
(MHFTSZ) Default: 0 ! MHFTSZ = 0 !

Stability class used to determine plume
growth rates for puffs above the bounda ry layer (JSUP) Default: 5 ! JSUP = 5 !

Vertical dispersion constant for stable conditions (k1 in Eqn. 2.7

- 3) (CONK1) Default: 0.01 ! CONK1 = .01 !

Vertical dispersion constant for neutral/ unstable conditions (k2 in Eqn. 2.7

- 4)
(CONK2) Default: 0.1 ! CONK2 = .1 !

Factor for determining Transition

- point from

Schulman

- Scire to Huber

- Snyder Building Downwash
scheme (SS used for Hs < Hb + TBD * HL)
(TBD) Default: 0.5 ! TBD = .5 ! TBD < 0 ==> always use Huber

- Snyder TBD = 1.5 ==> always use Schulman

- Scire

TBD = 0.5 ==> ISC Transition

- point

Range of land use categories for which urban dispersion is assumed

## StatOilGulf Services, LLC Air Quality Analysis Modeling Protocol

Project No. 26

- 27189A 33 (IURB1, IURB2) Default: 10 ! IURB1 = 10 !

19 ! IURB2 = 19 !

Site characterization parameters f or single

- point Met data files

--------- (needed for METFM = 2,3,4,5)

Land use category for modeling domain
(ILANDUIN) Default: 20 ! ILANDUIN = 20 !

Roughness length (m) for modeling domain
(Z0IN) Default: 0.25 ! Z0IN = .25 !

Leaf area index for modeling domain
(XLAIIN) Default: 3.0 ! XLAIIN = 3.0 !

Elevation above sea level (m)
(ELE VIN) Default: 0.0 ! ELEVIN = .0 !

Latitude (degrees) for met location
(XLATIN) Default:

- 999. ! XLATIN =

- 999.0 !

Longitude (degrees) for met location
(XLON IN) Default:

- 999. ! XLONIN =

- 999.0 !

Specialized information for interpreting single

- point Met data files

-----

Anemometer height (m) (Used only if METFM = 2,3)
(ANEMHT) Default: 10. ! ANEMHT = 10.0 !

Form of lateral turbulance data in PROFILE.DAT file (Used only if METFM = 4,5 or MTURBVW = 1 or 3)
(ISIGMAV) Default: 1 ! ISIGMAV = 1 !

0 = read s igma

- theta 1 = read sigma

- v

Choice of mixing heights (Used only if METFM = 4)
(IMIXCTDM) Default: 0 ! IMIXCTDM = 0 ! 0 = read PREDICTED mixing heights

1 = read OBSERVE D mixing heights

Maximum length of a slug (met. grid units)
(XMXLEN) Default: 1.0 ! XMXLEN = 1.0 !

Maximum travel distance of a puff/slug (in grid units) during one sampling step
(XSAMLEN) Default: 1.0 ! XSAMLEN = 1.0 !

Maximum Number of slugs/puffs release from one source during one time step
(MXNEW) Default: 99 ! MXNEW = 99 !

Maximu m Number of sampling steps for one puff/slug during one time step
(MXSAM) Default: 99 ! MXSAM = 99 !

Number of iterations used when computing the transport wind for a sampling s tep that includes gradual rise (for CALMET
and PROFILE winds)
(NCOUNT) Default: 2 ! NCOUNT = 2 !

Minimum sigma y for a new puff/slug (m)
(SYMIN) De fault: 1.0 ! SYMIN = 1.0 !

Minimum sigma z for a new puff/slug (m)
(SZMIN) Default: 1.0 ! SZMIN = 1.0 !

Default minimum turbulence velocities sigma

- v and sigma

- w for each stability class over land and over water (m/s)
(SVMIN(12) and SWMIN(12))

---------- LAND

---------- --------- WATER

---------- Stab Class : A B C D E F A B C D E F

- -- --- --- --- --- --- --- --- --- --- --- --- Default SVMIN : .50, .50, .50, .50, .50, .50, .37, .37, .37, .37, .37, .37
Default SWMIN : .20, .12, .08, .06, .03, .016, .20, .12, .08, .06, .03, .016

* SVMIN = 0.500, 0.500, 0.500, 0.500, 0.500, 0.500, 0.370, 0.370, 0.370, 0.370, 0.370, 0.370 * ! SVMIN = 12* 0.5 ! MREG = 1 requirement

## 34 ! SWMIN = 0.200, 0.120, 0.080, 0.060, 0.030, 0.016, 0.200, 0.120, 0.080, 0.060, 0.030, 0.016!

Diver gence criterion for dw/dz across puff used to initiate adjustment for horizontal
convergence (1/s) Partial adjustment starts at CDIV(1), and full adjustment is reached at CDIV(2)
(CDIV(2)) Default: 0.0,0.0 ! CDIV = 0.0, 0.0 !

Minimum wind speed (m/s) allowed for

non

- calm conditions. Also used as minimum speed returned when using power

- law extrapolation toward surface
(WSCALM) Default: 0.5 ! WSCALM = .5 !

Maximum mixing height (m)
(XMAXZI) Default: 3000. ! XMAXZI = 3000.0 !

Minimum mixing height (m)
(XMINZI) Default: 50. ! XMINZI = 50.0 !

Default wind speed classes

-- 5 upper bounds (m/s) are entered; the 6th class has no upper limit
(WSCAT(5)) Default :
ISC RURAL : 1.54, 3. 09, 5.14, 8.23, 10.8 (10.8+)

Wind Speed Class : 1 2 3 4 5

--- --- --- --- --- ! WSCAT = 1.54, 3.09, 5.14, 8.2 3, 10.80 !

Default wind speed profile power

- law exponents for stabilities 1

- 6
(PLX0(6)) Default : ISC RURAL values
ISC RURAL : .07, .07, .10, .15, .35, .55
ISC URBAN : .15, .15, .20, .25, .30, .30

Stability Class : A B C D E F

--- --- --- --- --- --- ! PLX0 = 0.07, 0.07, 0.10, 0.15, 0.35, 0.55 !

Default potential temperature gradient
for stable classes E, F (degK/m)
(PTG0(2)) Default: 0.020, 0.035
! PTG0 = 0.020, 0.035 !

Default plume path coefficients for each stability class (used when option for partial plume height terrain adjustment

is selected

-- MCTADJ=3) (PPC(6)) Stability Class : A B C D E F
Default PPC : .50, .50, .50, .50, .35, .35

--- --- --- --- --- --- ! PPC = 0.50, 0.50, 0.50, 0.50, 0.35, 0.35 !

Slug

- to

- puff transition criterion factor equal to sigma

- y/length of slug
(SL2PF) Default: 10. ! SL2PF = 10.0!

Puff

- splitting control variables

------------------------

VERTICAL SPLIT

--------- -----

Number of puffs that result every time a puff is split

- nsplit=2 means that 1 puff splits

into 2
(NSPLIT) Default: 3 ! NSPLIT = 3 !

Time(s) of a day when split puffs are elig ible to be split once again; this is typically set once
per day, around sunset before nocturnal shear develops. 24 values: 0 is midnight (00:00) and 23 is 11 PM (23:00)

0=do not re

- split 1=eligible for re

- split
(IRESPL IT(24)) Default: Hour 17 = 1
! IRESPLIT = 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0 !

Split is allowed only if last hour's mixing height (m) exceeds a minimum value
(ZISPLIT) Default: 100. ! ZISPLIT = 100.0 !

## StatOilGulf Services, LLC Air Quality Analysis Modeling Protocol

Project No. 26

- 27189A 35 Split is allowed only if ratio of last hour's mixing ht to the maximum mixing ht experienced by the puff is less than a maximum value (this postpones a split until a nocturnal layer de velops)
(ROLDMAX) Default: 0.25 ! ROLDMAX = 0.25 !

HORIZONTAL SPLIT

----------------

Number of puffs that result every time a puff is split

- nsplith=5 means that 1 puff splits

int o 5
(NSPLITH) Default: 5 ! NSPLITH = 5 !

Minimum sigma

- y (Grid Cells Units) of puff before it may be split
(SYSPLITH) Default: 1.0 ! SYSPLITH = 1.0 !

Minimum puff elongation rate (SYSPLITH/hr) due to wind shear, before it may be split
(SHSPLITH) Default: 2. ! SHSPLITH = 2.0 !

Minimum concentration (g/m^3) of each species in puff before it may be split Enter array of NSPEC values; if a single value is entered, it will be used for ALL species
(CNSPLITH) Default: 1.0E

- 07 ! CNSPLITH = 1.0E

- 07 !

Integration control variables

------------------- -----

Fractional convergence criterion for numerical SLUG sampling integration
(EPSSLUG) Default: 1.0e

- 04 ! EPSSLUG = 1.0E

- 04 !

Fractional convergence criterion for numerical AREA

source int egration
(EPSAREA) Default: 1.0e

- 06 ! EPSAREA = 1.0E

- 06 !

Trajectory step

- length (m) used for numerical rise integration
(DSRISE) Default: 1.0 ! DSRISE = 1.0 !

Boundary Condition (BC) Puff control variables

------------------------

Minimum height (m) to which BC puffs are mixed as they are emitted (MBCON=2 ONLY). Actual height is reset to the current mixing height at the release point if greater than this minimum.
(HTMINBC) Default: 500. ! HTMINBC = 500. !

Search radius (km) about a receptor for sampling nearest BC puff. BC puffs are typically emitted with a spacing of one grid cell length, so the search radius should be greater than DGRIDKM.
(RSAMPBC) Default: 10. ! RSAMPBC = 10 !

Near

- Surface depletion adjustment to concentration profile used when sampling BC puffs?
( MDEPBC) Default: 1 ! MDEPBC = 1 ! 0 = Concentration is NOT adjusted for depletion 1 = Adjust Concentration for depletion

!END!

------------------------------------------------------------------------ -------

INPUT GROUPS: 13a, 13b, 13c, 13d

-- Point source parameters

--------------------------------

--------------- Subgroup (13a)

---------------

Number of point sources with parameters provided below (NPT1) No default ! NPT1 = 16 !

Units used for point source
emissions below (IPTU) Default: 1 ! IPTU = 1 !
1 = g/s 2 = kg/hr
3 = lb/hr 4 = tons/yr 5 = Odour Unit * m**3/s (vol . flux of odour compound)
6 = Odour Unit * m**3/min 7 = metric tons/yr

## 36 Number of source

- species

combinations with variable emissions scaling factors provided below in (13d) (NSPT1) Default: 0 ! NS PT1 = 0 !

Number of point sources with variable emission parameters provided in external file (NPT2) No default ! NPT2 = 0 !

(If NPT2 > 0, these point

source emissions are read from
the file: PTEMARB.DAT)

!END!

--------------- Subgroup (13b)

--------------- POINT SOURCE: CONSTANT DATA

b c Source X UTM Y UTM Stack Base Stack Exit Exit Bldg. Emission No. Coordinate Coordinate Height Elevation Diameter Vel. Temp. Dwash Rates
(km) (km) (m) (m) (m) (m/s) (deg. K)

------ ---------- ---------- ------ ------ -------- ----- -------- - ---- -------- *** Max short

- term emission rates *** X Y Ht Elev Diam Vel Temp DW SO2 SO4 NOX HNO3 NO3 EC SOA PMF

PMC

! SRCNAM = GEN1 !
! X = 941.931,

- 1186.229,28.93,0,0.81,0.001,623.15,0,2.43E

- 01,7.83E

- 03,8 .99E+00,0,4.06E

- 04,2.42E

- 01,7.34E

- 02,0,0

!

! END !

! SRCNAM = GEN2 !
! X = 941.931,

- 1186.228,28.93,0,0.81,0.001,623.15,0,2.43E

- 01,7.83E

- 03,8.99E+00,0,4.06E

- 04,2.42E

- 01,7.34E

- 02,0,0

!

! END !

! SRCNAM = GEN3 !
! X = 941.931,

- 1186.229,26.82,0,0.81,0.001,623. 15,0,2.43E

- 01,7.83E

- 03,8.99E+00,0,4.06E

- 04,2.42E

- 01,7.34E

- 02,0,0

!

! END !

! SRCNAM = GEN4 !
! X = 941.931,

- 1186.228,26.82,0,0.81,0.001,623.15,0,2.43E

- 01,7.83E

- 03,8.99E+00,0,4.06E

- 04,2.42E

- 01,7.34E

- 02,0,0

!

! END !

! SRCNAM = GEN5 !
! X = 941.931,

- 1186.300 ,28.93,0,0.81,0.001,623.15,0,0,0,0,0,0,0,0,0,0 !

! END !

! SRCNAM = GEN6 !
! X = 941.931,

- 1186.302,28.93,0,0.81,0.001,623.15,0,0,0,0,0,0,0,0,0,0 !

! END !

! SRCNAM = GEN7 !
! X = 941.931,

- 1186.300,26.82,0,0.81,0.001,623.15,0,0,0,0,0,0,0,0,0,0 !

! END !

! S RCNAM = GEN8 !
! X = 941.931,

- 1186.302,26.82,0,0.81,0.001,623.15,0,0,0,0,0,0,0,0,0,0 !

! END !

! SRCNAM = EGEN1 !
! X = 942.005,

- 1186.225,9.45,0,0.41,0.001,888.15,0,1.16E

- 01,3.75E

- 03,7.71E+00,0,1.94E

- 04,1.16E

- 01,3.52E

- 02,0,0

!

! END !

! SRCNAM = LB1 !

! X = 942.024,

- 1186.260,19.70,0,0.89,0.001,830.15,0,1.32E

- 03,2.34E

- 04,1.13E

- 01,0,1.21E

- 05,7.25E

- 03,2.19E

- 03,0,0

!

! END !

! SRCNAM = LB2 !
! X = 942.024,

- 1186.270,19.70,0,0.89,0.001,830.15,0,1.32E

- 03,2.34E

- 04,1.13E

- 01,0,1.21E

- 05,7.25E

- 03,2.19E

- 03,0,0

!

! END !

! SRCNAM = LB3 !
! X = 941.939,

- 1186.256,19.70,0,0.89,0.001,830.15,0,1.32E

- 03,2.34E

- 04,1.13E

- 01,0,1.21E

- 05,7.25E

- 03,2.19E

- 03,0,0

!

! END !

! SRCNAM = LB4 !
! X = 941.939,

- 1186.267,19.70,0,0.89,0.001,830.15,0,1.32E

- 03,2.34E

- 04,1.13E

- 01,0,1.21E

- 05,7.25E

- 03, 2.19E

- 03,0,0

!

! END !

! SRCNAM = MOB1 !
! X = 941.927,

- 1186.264,19.70,0,1.85,0.001,773.15,0,7.44E

- 03,3.23E

- 04,2.53E

- 01,0,1.67E

- 05,1.00E

- 02,3.03E

- 03,0,0

!

! END !

! SRCNAM = CMU1 !

## StatOilGulf Services, LLC Air Quality Analysis Modeling Protocol

Project No. 26

- 27189A 37 ! X = 941.979,

- 1186.304,9.45,0,0.20,0.001,794.15,0,2.28E

- 02,4.96E

- 04,7.46E

- 01,0,2.57E

- 05,1.54E

- 02,4.65E

- 03,0,0

!

! END !

! SRCNAM = CMU2 !
! X = 941.981,

- 1186.304,9.45,0,0.20,0.001,794.15,0,2.28E

- 02,4.96E

- 04,7.46E

- 01,0,2.57E

- 05,1.54E

- 02,4.65E

- 03,0,0

!

! END !

--------

a Data for each source are treated as a separate inp ut subgroup

and therefore must end with an input group terminator.

SRCNAM is a 12

- character name for a source
(No default) X is an array holding the source data listed by the column headings
(No default) SIGYZI is an array holding the initial sigma

- y and sigma

- z (m)
(Default: 0.,0.) FMFAC is a vertical momentum flux factor (0. or 1.0) used to represent

the effect of rain

- caps or other physical configurations that reduce momentum rise associated with the actual exit velocity.
(Default: 1.0

-- full momentum used) ZPLTFM is the platform height (m) for sources influenced by an isolated structure that has a significant open area be tween the surface and the bulk of the structure, such as an offshore oil platform. The Base Elevation is that of the surface (ground or ocean), and the Stack Height is the release height above the Base (not above the platform). Building heights entered in Subgroup 13c must be those of the buildings on the platform, measured from the platform deck. ZPLTFM is used only with MBDW=1 (ISC
downwash method) for sources wi th building downwash.
(Default: 0.0)

b 0. = No building downwash modeled

1. = Downwash modeled for buildings resting on the surface 2. = Downwash modeled for buildings raised above the surface (ZPLTFM > 0.)

NOTE: must be entered as a REAL number (i.e., with decimal point)

c An emission rate must be entered for every pollutant modeled.

Enter emission rate of zero for secondary pollutants that are modeled, but not emitted. Units are specified by IPTU
(e.g. 1 for g/s).

--------------- Subgroup (13c)

---------------

BUILDING DIMENSION DATA FOR SOURCES SUBJECT TO DOWNWASH

------------------------------------------------------- Source a No. Effective building height, width, length and X/Y offset (in meters)
every 10 degrees. LENGTH, XBADJ, and YBADJ are only needed for MBDW=2 (PRIME downwash option)

------ -------------------- -----------------------------------------------

--------

a Building height, width, length, and X/Y offset from the source are treated

as a separate input subgroup for each source and therefore must end with an input group terminator.

-- ------------- Subgroup (13d)

---------------

a

POINT SOURCE: VARIABLE EMISSIONS DATA

---------------------------------------

Use this subgroup to describe temporal variations in the emission rates given in 13b. Factors entered multiply the rates in 13b. Skip sources here that have constant emissions. For more elaborate variation in source parameters, use PTEMARB.DAT and NPT2 > 0.

IVARY determines the type of var iation, and is source

- specific:
(IVARY) Default: 0

0 = Constant 1 = Diurnal cycle (24 scaling factors: hours 1

- 24) 2 = Monthly cycle (12 scaling factors: months 1

- 12)

## 38 3 = Hour & Season (4 groups of 24 hourly scaling factors, where first group is DEC

- JAN

- FEB) 4 = Speed & Stab. (6 groups of 6 scaling factors, where

firs t group is Stability Class A,
and the speed classes have upper bounds (m/s) defined in Group 12 5 = Temperature (12 scaling factors, where temperature
classes have upper bounds (C) of:
0, 5, 10, 15, 20, 25, 30, 35, 40,
45, 50, 50+)

--------

a Data for each species are treated as a separate input subgrou p

and therefore must end with an input group terminator.

-------------------------------------------------------------------------------

INPUT GROUPS: 14a, 14b, 14c, 14d

-- Area source parameters

--------------------------------

--------------- Subgr oup (14a)

---------------

Number of polygon area sources with parameters specified below (NAR1) No default ! NAR1 = 0 !

Units used for area source
emissions below (IARU) Default: 1 ! IARU = 1 !
1 = g/m**2/s 2 = kg/m**2/hr
3 = lb/m**2/hr 4 = tons/m**2/yr 5 = Odour Unit * m/s (vol. flux/m**2 of odour compound)
6 = Odour Unit * m/min

7 = metric tons/m**2/yr

Number of source

- species

combinations with variable emissions scaling factors provided below in (14d) (NSAR1) Default: 0 ! NSAR1 = 0 !

Number of buoyant polygon area sources

with variable location and emission
parameters (NAR2) No default ! NAR2 = 0 ! (If NAR2 > 0, ALL parameter data for these sources are read from the file: BAEMARB.DAT)

!END!

--------------- Subgroup (14b)

---------------

a

AREA SOURCE: CONSTANT DATA

---------------------------- b

Source Effect. Base Initial Emission No. Height Elevation Sigma z Rates
(m) (m) (m)

------- ------ ------ -------- ---------

--------

a Data for each source are treated as a separate input subgroup

and therefore must end with an input group termi nator.

b An emission rate must be entered for every pollutant modeled.

Enter emission rate of zero for secondary pollutants that are modeled, but not emitted. Units are specified by IARU
(e.g. 1 for g/m**2/s).

--------------- Subg roup (14c)

---------------

COORDINATES (UTM

- km) FOR EACH VERTEX(4) OF EACH POLYGON

-------------------------------------------------------- Source a
No. Ordered lis t of X followed by list of Y, grouped by source

------ ------------------------------------------------------------

--------

a Data for each source are treated as a separate input subgroup

and therefore must end with an input group termin ator.

## StatOilGulf Services, LLC Air Quality Analysis Modeling Protocol

Project No. 26

- 27189A 39 --------------- Subgroup (14d)

---------------

a

AREA SOURCE: VARIABLE EMISSIONS DATA

--------------------------------------

Use this subgroup to describe temporal variations i n the emission rates given in 14b. Factors entered multiply the rates in 14b. Skip sources here that have constant emissions. For more elaborate variation in source parameters, use BAEMARB.DAT and NAR2 > 0.

IVARY determines the type of variation, and is source

- specific:
(IVARY) Default: 0

0 = Constant 1 = Diurnal cycle (24 scaling factors: hours 1

- 24) 2 = Monthly cycle (12 scaling factors: months 1

- 12) 3 = Hour & Season (4 groups of 24 hourly scaling factors, where first group is DEC

- JAN

- FEB) 4 = Speed & Stab. (6 groups of 6 scaling factors, where first group is Stability Class A,
and the speed classes have upper bounds (m/s) defined in Group 12 5 = Temperature (12 scaling factors, where temperature
classes have upper bounds (C) of:
0, 5, 10, 15, 20, 25, 30, 35, 40,
45, 50, 50+)

--------

a Data for each species are treated as a separate input s ubgroup

and therefore must end with an input group terminator.

-------------------------------------------------------------------------------

INPUT GROUPS: 15a, 15b, 15c

-- Line source parameters

---------------------------

--------------- Subgroup (15a)

--------------- Number of buoyant line sources

with variable location and emission
parameters (NLN2) No default ! NLN2 = 0 !

(If NLN2 > 0, ALL parameter data for

these sources are read from the file: LNEMARB.DAT)

Number of buoyant line sources (NLINES) No default ! NLINES = 0 !

Units used for line source
emissions below (ILNU) Default: 1 ! ILNU = 1 !
1 = g/s 2 = kg/hr
3 = lb/hr 4 = tons/yr 5 = Odour Unit * m**3/s (vol. flux of odour compound)
6 = Odour Unit * m**3/min 7 = metric tons/yr

Number of source

- species

com binations with variable emissions scaling factors provided below in (15c) (NSLN1) Default: 0 ! NSLN1 = 0 !

Maximum number of segments used to model
each line (MXNSEG) Default: 7 ! MXNSEG = 7 !

The following variables are required only if NLINES > 0. They are used in the buoyant line source plume rise calculations.

Number of distances at which Default: 6 ! NLRISE = 6 ! transitional rise is computed

Average building length (XL) No default ! XL = .0 !
(in meters)

Average building height (HBL) No default ! HBL = .0 !
(in meters)

Average building width (WBL) No default ! WBL = .0 !
(in meters)

## 40 Average line source width (WML) No default ! WML = .0 !
(in meters)

Average separation between buildings (DXL) No default ! DXL = .0 !
(in meters)

Average buoyancy parameter (FPRIMEL) No default ! FPRIMEL = .0 ! (in m**4/s**3)

!END!

--------------- Subgroup (15b)

---------------

BUOYANT LINE SOURCE: CONSTANT DATA

----------------------------------

a Source Beg. X Beg. Y End. X End. Y Release Base Emission No. Coordinate Coordinate Coordinate Coordinate Height Elevation Rates
(km) (km) (km) (km) (m) (m)

------ ---------- ---------- --------- ---------- ------- --------- ---------

a Data for each source are treated as a separate input subgroup

and there fore must end with an input group terminator.

b An emission rate must be entered for every pollutant modeled.

Enter emission rate of zero for secondary pollutants that are modeled, but not emitted. Units are specified by ILNTU
(e .g. 1 for g/s).

--------------- Subgroup (15c)

---------------

a

BUOYANT LINE SOURCE: VARIABLE EMISSIONS DATA

----------------------------------------------

Use this subgroup to describe temporal variations in the emission rates given in 15b. Factors entered multiply the rates in 15b. Skip sources here that have constant emissions.

IVARY determines the type of variation, and is source

- specific:
(IVARY) Default: 0

0 = Constant 1 = Diurnal cycle (24 scaling factors: hours 1

- 24) 2 = Monthly cycle (12 scaling factors: months 1

- 12) 3 = Hour & Season (4 groups of 2 4 hourly scaling factors, where first group is DEC

- JAN

- FEB) 4 = Speed & Stab. (6 groups of 6 scaling factors, where first group is Stability Class A,
and the speed classes have upper bounds (m/s) defined in Group 12 5 = Temperature (12 scaling factors, where temperature
classes have upper bounds (C) of:
0, 5, 10, 15, 20, 25, 30, 35, 40,
45, 50, 50+)

--------

a Data for each species are treated as a separate input subgroup

and therefore must end with an input gro up terminator.

-------------------------------------------------------------------------------

INPUT GROUPS: 16a, 16b, 16c

-- Volume source parameters

---------------------------

--------------- Subgroup (16a)

--------------- Number of volume source s with parameters provided in 16b,c (NVL1) No default ! NVL1 = 10 !

Units used for volume source
emissions below in 16b (IVLU) Default: 1 ! IVLU = 1 !
1 = g/s 2 = kg/hr

3 = lb/hr 4 = tons/yr 5 = Odour Unit * m**3/s (vol. flux of odour compound)

## StatOilGulf Services, LLC Air Quality Analysis Modeling Protocol

Project No. 26

- 27189A 41 6 = Odour Unit * m**3/min 7 = metric tons/yr

Number of source

- species

combinations with variable

em issions scaling factors provided below in (16c) (NSVL1) Default: 0 ! NSVL1 = 0 !

Number of volume sources with

variable location and emission
parameters (NVL2) No default ! NVL2 = 0 !

(If N VL2 > 0, ALL parameter data for these sources are read from the VOLEMARB.DAT file(s) )

!END!

--------------- Subgroup (16b)

---------------

a

VOLUME SOURCE: CONSTANT DATA

---------------- -------------- b

X UTM Y UTM Effect. Base Initial Initial Emission Coordinate Coordinate Height Elevation Sigma y Sigma z Rates
(km) (km) (m) (m) (m) (m)

---------- ---------- ------ ------ -------- -------- -------- *** Max short

- term emission rates ***
Xutm Yutm Hgt Elev

! SRCNAM = VOL01 !

! X = 901.865,

- 1163.096,19.41,0,2393,13.7,8.13E

- 02,1.42E

- 03,2.66E+00,0,7.35E

- 05,4.39E

- 02,1.33E

- 02,0,0 !

! END !

! SRCNAM = VOL02 !
! X = 906.319,

- 1165.671,19.41,0,2393,13.7,8.13E

- 02,1.42E

- 03,2.66E+00,0,7.35E

- 05,4.39E

- 02,1.33E

- 02,0,0 !

! END !

! SRCNAM = VOL03 !
! X = 910.773,

- 1168.245,19.41,0,2393,13.7,8.13E

- 02,1.42E

- 03,2.66E+00,0,7.35E

- 05,4.39E

- 02,1.33E

- 02,0,0 !

! END !

! SRCNAM = VOL04 !
! X = 915.228,

- 1170.820,19.41,0,2393,13.7,8.13E

- 02,1.42E

- 03,2.66E+00,0,7.35E

- 05,4.39E

- 02,1.33E

- 02,0,0 !

! END !

! SRCNAM = VOL05 !
! X = 919.682,

- 1173.394,19.41,0,2393,13.7,8.13E

- 02,1.42E

- 03,2.66E+00,0,7.35E

- 05,4.39E

- 02,1.33E

- 02,0,0 !

! END !

! SRCNAM = VOL06 !
! X = 924.136,

- 1175.969,19.41,0,2393,13.7,8.13E

- 02,1.42E

- 03,2.66E+00,0,7.35E

- 05,4.39E

- 02,1.33E

- 02,0,0 !

! END !

! SRC NAM = VOL07 !
! X = 928.591,

- 1178.543,19.41,0,2393,13.7,8.13E

- 02,1.42E

- 03,2.66E+00,0,7.35E

- 05,4.39E

- 02,1.33E

- 02,0,0 !

! END !

! SRCNAM = VOL08 !
! X = 933.045,

- 1181.118,19.41,0,2393,13.7,8.13E

- 02,1.42E

- 03,2.66E+00,0,7.35E

- 05,4.39E

- 02,1.33E

- 02,0,0 !

! END !

! SRCNAM = VOL09 !
! X = 937.500,

- 1183.692,19.41,0,2393,13.7,8.13E

- 02,1.42E

- 03,2.66E+00,0,7.35E

- 05,4.39E

- 02,1.33E

- 02,0,0 !

! END !

! SRCNAM = VOL10 !
! X = 941.954,

- 1186.267,19.41,0,2393,13.7,8.13E

- 02,1.42E

- 03,2.66E+00,0,7.35E

- 05,4.39E

- 02,1.33E

- 02,0,0 !

! END !

--------

a Data for each source are treated as a separate input subgroup

and therefore must end with an input group terminator.

b An emission rate must be entered for every pollutant modeled.

Enter emission rate of zero for secondary pollutants that are modeled, but not emitted. Units are specified by IVLU
(e.g. 1 for g/s).

--------------- Subgroup (16c)

---------------

a

VOLUME SOURCE: VARIABLE EMISS IONS DATA

---------------------------------------- Use this subgroup to describe temporal variations in the emission rates given in 16b. Factors entered multiply the rates in 16b. Skip sources here that have constant emissions. F or more elaborate variation in source parameters, use VOLEMARB.DAT and NVL2 > 0.

## 42 IVARY determines the type of variation, and is source

- specific:
(IVARY) Default: 0

0 = Constant

1 = Diurnal cycle (24 scaling factors: hours 1

- 24) 2 = Monthly cycle (12 scaling factors: months 1

- 12) 3 = Hour & Season (4 groups of 24 hourly scaling factors, where first group is DE C

- JAN

- FEB) 4 = Speed & Stab. (6 groups of 6 scaling factors, where first group is Stability Class A,
and the speed classes have upper bounds (m/s) defined in Group 12 5 = Temperature (12 scaling factors, where temperature
classes have upper bounds (C) of:
0, 5, 10, 15, 20, 25, 30, 35, 40,
45, 50, 50+)

--------

a Data for each species are treated as a separate input subgroup

and therefore must end with an input group terminator.

--------------------------------------------------------------------- ----------

INPUT GROUPS: 17a & 17b

-- Non

- gridded (discrete) receptor information

-----------------------

--------------- Subgroup (17a)

--------------- Number of non

- gridded receptors (NREC) No default ! NREC = 1086 !

!END!

--------------- Subg roup (17b)

---------------

a

NON

- GRIDDED (DISCRETE) RECEPTOR DATA

------------------------------------ X UTM Y UTM Ground Height b

Receptor C oordinate Coordinate Elevation Above Ground

No. (km) (km) (m) (m)

-------- ---------- ---------- --------- ------------

00001 ! X = 919.692,

- 1083.836, 0.0, 0 ! !END! al_rec_3plus2 5nm

- 0001
00002 ! X = 918.754,

- 1084.200, 0.0, 0 ! !END! al_rec_3plus25nm

- 0002
00003 ! X = 917.826,

- 1084.587, 0.0, 0 ! !END! al_rec_3plus25nm

- 0003
00004 ! X = 916.890,

- 1084.956, 0.0, 0 ! !END! al_rec_3plus25nm

- 0004
00005 ! X = 915.947,

- 1085.306, 0.0, 0 ! !END! al_rec_3plus25nm

- 0005 ...(snip

– reduced for brevity) ...
00066 ! X = 856.056,

- 1095.963, 0.0, 0 ! !END! al_rec_3plus25nm

- 0066
00067 ! X = 855.063,

- 1095.805, 0. 0, 0 ! !END! al_rec_3plus25nm

- 0067
00068 ! X = 854.074,

- 1095.624, 0.0, 0 ! !END! al_rec_3plus25nm

- 0068
00069 ! X = 853.090,

- 1095.417, 0.0, 0 ! !END! al_rec_3plus25nm

- 0069
00070 ! X = 852.110,

- 1095.189, 0.0, 0 ! !END! al_rec_3plus25nm

- 0070
00071 ! X = 851.137,

- 1094.936, 0.0, 0 ! !END! al_rec_3plus25nm

- 0071
00072 ! X = 777.710,

- 1118.013, 0.0, 0 ! !END! bretwild

- 0001
00073 ! X = 779.971,

- 1115.939, 0.0, 0 ! !END! bretwild

- 0002
00074 ! X = 780.697,

- 1114.937, 0.0, 0 ! !END! bretwild

- 0003
00075 ! X = 781.422,

- 1113.936, 0.0, 0 ! !END! bretwild

- 0004
00076 ! X = 785.607,

- 1106.067, 0.0, 0 ! !END! bretwild

- 0005

00077 ! X = 789.227,

- 1101.058, 0.0, 0 ! !END! bretwild

- 0006
00078 ! X = 789.783,

- 1098.197, 0.0, 0 ! !END! bretwild

- 0007
00079 ! X = 791.230,

- 1096.193, 0.0, 0 ! !END! bretwild

- 0008
00080 ! X = 791.146,

- 1095.264, 0.0, 0 ! !END! bretwild

- 0009
00081 ! X = 791.785,

- 1093.333, 0.0, 0 ! !END! bretwild

- 0010
00082 ! X = 791.701,

- 1092.404, 0.0, 0 ! !END! bretwild

- 0011
00083 ! X = 792.339,

- 1090.473, 0.0, 0 ! !END! bretwild

- 0012
00084 ! X = 792.256,

- 1089.543, 0.0, 0 ! !END! bretwild

- 0013
00085 ! X = 792.172,

- 1088.614, 0.0, 0 ! !END! bretwild

- 0014
00086 ! X = 792.088,

- 1087.685, 0.0, 0 ! !END! bretwild

- 0015

00087 ! X = 792.00 4,

- 1086.756, 0.0, 0 ! !END! bretwild

- 0016
00088 ! X = 791.920,

- 1085.826, 0.0, 0 ! !END! bretwild

- 0017
00089 ! X = 791.753,

- 1083.968, 0.0, 0 ! !END! bretwild

- 0018
00090 ! X = 792.559,

- 1083.896, 0.0, 0 ! !END! bretwild

- 0019
00091 ! X = 792.475,

- 1082.967, 0.0, 0 ! !END! bretwild

- 0020
00092 ! X = 791.585,

- 1082.110, 0.0, 0 ! !END! bretwild

- 0021
00093 ! X = 792.391,

- 1082.037, 0.0, 0 ! !END! bretwild

- 0022

0 0094 ! X = 791.502,

- 1081.181, 0.0, 0 ! !END! bretwild

- 0023
00095 ! X = 792.307,

- 1081.109, 0.0, 0 ! !END! bretwild

- 0024
00096 ! X = 791.418,

- 1080.252, 0.0, 0 ! !END! bretwild

- 0025
00097 ! X = 791.334,

- 107 9.323, 0.0, 0 ! !END! bretwild

- 0026
00098 ! X = 790.446,

- 1078.467, 0.0, 0 ! !END! bretwild

- 0027

## StatOilGulf Services, LLC Air Quality Analysis Modeling Protocol

Project No. 26

- 27189A 43

00099 ! X = 791.250,

- 1078.394, 0.0, 0 ! !END! bretwild

- 0028
00100 ! X = 790.362,

- 1077.538, 0.0, 0 ! !E ND! bretwild

- 0029
00101 ! X = 791.167,

- 1077.465, 0.0, 0 ! !END! bretwild

- 0030
00102 ! X = 790.279,

- 1076.609, 0.0, 0 ! !END! bretwild

- 0031
00103 ! X = 790.195,

- 1075.680, 0.0, 0 ! !END! bretwild

- 0032

00104 ! X = 790.111,

- 1074.751, 0.0, 0 ! !END! bretwild

- 0033
00105 ! X = 789.223,

- 1073.894, 0.0, 0 ! !END! bretwild

- 0034
00106 ! X = 789.140,

- 1072.965, 0.0, 0 ! !END! bretwild

- 0035
00107 ! X = 788.252,

- 1072.109, 0.0, 0 ! !END! bretwild

- 0036
00108 ! X = 788.169,

- 1071.180, 0.0, 0 ! !END! bretwild

- 0037
00109 ! X = 787.281,

- 1070.324, 0.0, 0 ! !END! bretwild

- 0038
00110 ! X = 786.393,

- 1069.467, 0.0, 0 ! !END! bret wild

- 0039
00111 ! X = 785.506,

- 1068.610, 0.0, 0 ! !END! bretwild

- 0040
00112 ! X = 1422.679,

- 1375.246, 0.0, 0 ! !END! fl_rec_9plus25nm

- 0001
00113 ! X = 1422.015,

- 1374.476, 0.0, 0 ! !END! fl_rec_9plus25nm

- 0002

0 0114 ! X = 1421.364,

- 1373.694, 0.0, 0 ! !END! fl_rec_9plus25nm

- 0003
00115 ! X = 1420.726,

- 1372.902, 0.0, 0 ! !END! fl_rec_9plus25nm

- 0004
00116 ! X = 1420.101,

- 1372.099, 0.0, 0 ! !END! fl_rec_9plus25nm

- 0005
...(s nip

– reduced for brevity) ...
00840 ! X = 926.373,

- 1093.508, 0.0, 0 ! !END! fl_rec_9plus25nm

- 0729
00841 ! X = 925.408,

- 1093.793, 0.0, 0 ! !END! fl_rec_9plus25nm

- 0730
00842 ! X = 924.438,

- 1094.058, 0.0, 0 ! ! END! fl_rec_9plus25nm

- 0731
00843 ! X = 923.462,

- 1094.303, 0.0, 0 ! !END! fl_rec_9plus25nm

- 0732
00844 ! X = 922.520,

- 1094.651, 0.0, 0 ! !END! fl_rec_9plus25nm

- 0733
00845 ! X = 921.589,

- 1095.031, 0.0, 0 ! !END! fl_rec_9plus25nm

- 0734
00846 ! X = 920.655,

- 1095.406, 0.0, 0 ! !END! fl_rec_9plus25nm

- 0735
00847 ! X = 850.291,

- 1095.005, 0.0, 0 ! !END! lams_rec_3plus25nm

- 0001
00848 ! X = 849.328,

- 1095.268, 0.0, 0 ! !END! l ams_rec_3plus25nm

- 0002
00849 ! X = 848.432,

- 1095.725, 0.0, 0 ! !END! lams_rec_3plus25nm

- 0003
00850 ! X = 847.527,

- 1096.164, 0.0, 0 ! !END! lams_rec_3plus25nm

- 0004
00851 ! X = 846.614,

- 1096.585, 0.0, 0 ! !END! lams_rec_3plus25nm

- 0005
00852 ! X = 845.690,

- 1096.983, 0.0, 0 ! !END! lams_rec_3plus25nm

- 0006 ...(snip

– reduced for brevity) ...
01082 ! X = 728.239,

- 1250.971, 0.0, 0 ! !END! lams_rec_3plus25nm

- 0236
01083 ! X = 727.305,

- 1250.588, 0.0, 0 ! !END! lams_rec_3plus25nm

- 0237
01084 ! X = 726.381,

- 1250.182, 0.0, 0 ! !END! lams_rec_3plus25nm

- 0238
01085 ! X = 725.465,

- 1249.757, 0. 0, 0 ! !END! lams_rec_3plus25nm

- 0239
01086 ! X = 724.559,

- 1249.311, 0.0, 0 ! !END! lams_rec_3plus25nm

- 0240

-------------

a Data for each receptor are treated as a separate input subgroup

and therefore must end with an input group terminator.

b Receptor height above ground is optional. If no value is entered,

the receptor is placed on the ground.

# Attachment 2

CD Containing Modeling Files

# Attachment 3

## STATOIL_Developer.SUM 8/9/2012

Visual Effects Screening Analysis for

Source: Developer
Class I Area: ClassII

*** Level-1 Screening *** Input Emissions for

Particulates 12.61 LB /HR

NOx (as NO2) 532.40 LB /HR Primary NO2 .00 LB /HR

Soot .00 LB /HR Primary SO4 .00 LB /HR

**** Default Particle Characteristics Assumed

Transport Scenario Specifications:

Background Ozone: .04 ppm Background Visual Range: 20.00 km
Source-Observer Distance: 50.00 km Min. Source-Class I Distance: 50.00 km

Max. Source-Class I Distance: 50.00 km
Plume-Source-Observer Angle: 11.25 degrees Stability: 6 Wind Speed: 1.00 m/s

R E S U L T S

Asterisks (*) indicate plume impacts that exceed screening criteria

Maximum Visual Impacts INSIDE Class I Area

Screening Criteria ARE NOT Exceeded
Delta E Contrast

=========== ============ Backgrnd Theta Azi Distance Alpha Crit Plume Crit Plume

======== ===== === ======== ===== ==== ===== ==== =====

SKY 10. 84. 50.0 84. 2.00 .969 .05 -.005

SKY 140. 84. 50.0 84. 2.00 .300 .05 -.006

TERRAIN 10. 84. 50.0 84. 2.00 .058 .05 .001

TERRAIN 140. 84. 50.0 84. 2.00 .018 .05 .001

Maximum Visual Impacts OUTSIDE Class I Area

Screening Criteria ARE NOT Exceeded
Delta E Contrast

=========== ============ Backgrnd Theta Azi Distance Alpha Crit Plume Crit Plume

======== ===== === ======== ===== ==== ===== ==== =====

SKY 10. 70. 47.5 99. 2.00 1.011 .05 -.005

SKY 140. 70. 47.5 99. 2.00 .313 .05 -.007

TERRAIN 10. 60. 45.7 109. 2.00 .081 .05 .001

TERRAIN 140. 60. 45.7 109. 2.00 .024 .05 .001

1

## STATOIL_Developer.out 8/9/2012

"Developer "
"ClassII "

4 3

12.610 532.400 .000 .000 .000

50.000 50.000 50.000 20.000

1 1.500 3

1 2.500 8

1 2.500 6

1 2.000 1

1 1.500 4

1 .040 1.000 6

1 11.250

34

1 0 5.0 163.8 15.6 34.9 41.4 .39 .050 2.00 .02 2.00

.01 2.00 .01 2.00 .00

2 0 10.0 158.8 24.0 26.9 35.6 .59 .050 2.00 .05 2.00

.02 2.00 .01 2.00 .00

3 0 15.0 153.8 29.3 22.1 31.4 .77 .050 2.00 .09 2.00

.03 2.00 .02 2.00 .01

4 0 20.0 148.8 33.0 18.8 28.3 .93 .050 2.00 .17 2.00

.05 2.00 .03 2.00 .01

5 0 25.0 143.8 35.7 16.5 26.0 1.08 .050 2.00 .28 2.00

.09 2.00 .04 2.00 .01

6 0 30.0 138.8 37.9 14.8 24.1 1.23 .050 2.00 .41 2.00

.13 2.00 .05 2.00 .01

7 0 35.0 133.8 39.7 13.5 22.7 1.36 .050 2.00 .54 2.00

.17 2.00 .06 2.00 .02

8 0 40.0 128.8 41.2 12.5 21.6 1.49 .050 2.00 .66 2.00

.20 2.00 .06 2.00 .02

9 0 45.0 123.8 42.5 11.7 20.7 1.60 .050 2.00 .77 2.00

.24 2.00 .07 2.00 .02

10 0 50.0 118.8 43.7 11.1 20.1 1.70 .050 2.00 .86 2.00

.27 2.00 .08 2.00 .02

11 0 55.0 113.8 44.7 10.7 19.6 1.78 .050 2.00 .93 2.00

.29 2.00 .08 2.00 .02

12 0 60.0 108.8 45.7 10.3 19.3 1.86 .050 2.00 .97 2.00

.30 2.00 .08 2.00 .02

13 0 65.0 103.8 46.7 10.0 19.2 1.91 .050 2.00 1.00 2.00

.31 2.00 .08 2.00 .02

14 0 70.0 98.8 47.5 9.9 19.2 1.96 .050 2.00 1.01 2.00

.31 2.00 .08 2.00 .02

15 0 75.0 93.8 48.4 9.8 19.3 1.99 .050 2.00 1.01 2.00

.31 2.00 .07 2.00 .02

16 0 80.0 88.8 49.3 9.8 19.6 2.00 .050 2.00 .99 2.00

.31 2.00 .06 2.00 .02

17 0 85.0 83.8 50.1 9.8 20.1 1.99 .050 2.00 .96 2.00

.30 2.00 .06 2.00 .02

18 0 90.0 78.8 51.0 9.9 20.7 1.98 .050 2.00 .92 2.00

.29 2.00 .05 2.00 .01

19 0 95.0 73.8 51.9 10.2 21.6 1.94 .050 2.00 .87 2.00

.27 2.00 .04 2.00 .01

20 0 100.0 68.8 52.8 10.5 22.7 1.90 .050 2.00 .80 2.00

.25 2.00 .03 2.00 .01

21 0 105.0 63.8 53.8 10.9 24.1 1.83 .050 2.00 .73 2.00

.22 2.00 .03 2.00 .01

22 0 110.0 58.8 55.0 11.4 26.0 1.76 .050 2.00 .64 2.00

.20 2.00 .02 2.00 .01

23 0 115.0 53.8 56.2 12.1 28.3 1.66 .050 2.00 .54 2.00

.17 2.00 .01 2.00 .00

24 0 120.0 48.8 57.6 13.0 31.4 1.56 .050 2.00 .44 2.00

.14 2.00 .01 2.00 .00

25 0 125.0 43.8 59.2 14.1 35.6 1.45 .050 2.00 .33 2.00

.10 2.00 .00 2.00 .00

26 0 130.0 38.8 61.2 15.6 41.4 1.32 .050 2.00 .23 2.00

.07 2.00 .00 2.00 .00

27 0 135.0 33.8 63.6 17.6 50.0 1.18 .050 2.00 .14 2.00

.04 2.00 .00 2.00 .00

1

## STATOIL_Developer.out 8/9/2012

28 0 140.0 28.8 66.8 20.3 63.6 1.03 .050 2.00 .08 2.00

.02 2.00 .00 2.00 .00

29 0 145.0 23.8 71.2 24.2 88.4 .88 .050 2.00 .03 2.00

.01 2.00 .00 2.00 .00

30 0 150.0 18.8 77.8 30.3 146.6 .71 .050 2.00 .01 2.00

.00 2.00 .00 2.00 .00

31 0 155.0 13.8 88.9 41.0 438.7 .54 .050 2.00 .00 2.00

.00 2.00 .00 2.00 .00

32 0 .2 168.5 1.0 49.0 49.5 .07 .050 2.68 .00 2.00

.00 2.68 .00 2.00 .00

33 1 84.4 84.4 50.0 9.8 20.0 2.00 .050 2.00 .97 2.00

.30 2.00 .06 2.00 .02

34 1 84.4 84.4 50.0 9.8 20.0 2.00 .050 2.00 .97 2.00

.30 2.00 .06 2.00 .02

34

1 0 5.000 .050 -.000 .000 -.000 .000 .000 .000 .000 .000

.000 .000 -.000 .000

2 0 10.000 .050 -.001 .000 -.001 .000 -.001 .000 -.001 .000

.000 .000 -.000 .000

3 0 15.000 .050 -.001 .000 -.002 .000 -.002 .000 -.002 .000

.000 .000 -.000 .000

4 0 20.000 .050 -.002 .000 -.003 .000 -.003 .000 -.003 .000

.000 .000 -.001 .000

5 0 25.000 .050 -.003 .001 -.004 .001 -.005 .000 -.005 .000

.000 .000 -.001 .000

6 0 30.000 .050 -.004 .001 -.004 .001 -.007 .001 -.007 .001

.000 .000 -.001 .000

7 0 35.000 .050 -.004 .001 -.005 .001 -.009 .001 -.009 .001

.000 .001 -.001 .000

8 0 40.000 .050 -.005 .001 -.006 .001 -.010 .001 -.011 .001

.000 .001 -.001 .001

9 0 45.000 .050 -.005 .001 -.006 .001 -.012 .001 -.013 .001

.000 .001 -.001 .001

10 0 50.000 .050 -.005 .001 -.007 .001 -.013 .001 -.014 .001

.000 .001 -.001 .001

11 0 55.000 .050 -.005 .001 -.007 .001 -.014 .001 -.015 .001

.000 .001 -.001 .001

12 0 60.000 .050 -.006 .001 -.007 .001 -.014 .001 -.015 .001

.000 .001 -.001 .001

13 0 65.000 .050 -.006 .001 -.007 .001 -.015 .001 -.015 .001

.000 .001 -.001 .001

14 0 70.000 .050 -.005 .001 -.007 .001 -.015 .001 -.016 .001

.000 .001 -.001 .001

15 0 75.000 .050 -.005 .001 -.007 .001 -.015 .001 -.016 .001

.000 .001 -.001 .000

16 0 80.000 .050 -.005 .001 -.006 .001 -.015 .001 -.015 .001

.000 .001 -.001 .000

17 0 85.000 .050 -.005 .001 -.006 .001 -.014 .001 -.015 .001

.000 .000 -.001 .000

18 0 90.000 .050 -.005 .001 -.006 .001 -.014 .001 -.014 .001

.000 .000 -.001 .000

19 0 95.000 .050 -.005 .001 -.006 .001 -.013 .001 -.013 .001

.000 .000 -.001 .000

20 0 100.000 .050 -.005 .001 -.006 .001 -.012 .001 -.013 .001

.000 .000 -.001 .000

21 0 105.000 .050 -.004 .000 -.005 .000 -.011 .000 -.011 .000

.000 .000 -.001 .000

22 0 110.000 .050 -.004 .000 -.005 .000 -.010 .000 -.010 .000

.000 .000 -.001 .000

23 0 115.000 .050 -.004 .000 -.004 .000 -.008 .000 -.009 .000

.000 .000 -.001 .000

24 0 120.000 .050 -.003 .000 -.004 .000 -.007 .000 -.007 .000

.000 .000 -.001 .000

25 0 125.000 .050 -.003 .000 -.003 .000 -.005 .000 -.006 .000

.000 .000 -.001 .000

26 0 130.000 .050 -.002 .000 -.003 .000 -.004 .000 -.004 .000

.000 .000 -.001 .000

2

## STATOIL_Developer.out 8/9/2012

27 0 135.000 .050 -.002 .000 -.002 .000 -.002 .000 -.003 .000

.000 .000 -.000 .000

28 0 140.000 .050 -.001 .000 -.001 .000 -.001 .000 -.001 .000

.000 .000 -.000 .000

29 0 145.000 .050 -.000 .000 -.001 .000 -.001 .000 -.001 .000

.000 .000 -.000 .000

30 0 150.000 .050 -.000 .000 -.000 .000 -.000 .000 -.000 .000

.000 .000 .000 .000

31 0 155.000 .050 .000 .000 .000 .000 .000 .000 .000 .000

.000 .000 .000 .000

32 0 .228 .050 .000 .000 .000 .000 .000 .000 .000 .000

.000 .000 .000 .000

33 1 84.375 .050 -.005 .001 -.006 .001 -.014 .001 -.015 .001

.000 .000 -.001 .000

34 1 84.375 .050 -.005 .001 -.006 .001 -.014 .001 -.015 .001

.000 .000 -.001 .000

3

## STATOIL_Discoverer_Americas.SUM 8/9/2012

Visual Effects Screening Analysis for

Source: Disco
Class I Area: ClassII

*** Level-1 Screening *** Input Emissions for

Particulates 15.67 LB /HR

NOx (as NO2) 778.20 LB /HR Primary NO2 .00 LB /HR

Soot .00 LB /HR Primary SO4 .00 LB /HR

**** Default Particle Characteristics Assumed

Transport Scenario Specifications:

Background Ozone: .04 ppm Background Visual Range: 20.00 km
Source-Observer Distance: 50.00 km Min. Source-Class I Distance: 50.00 km

Max. Source-Class I Distance: 50.00 km
Plume-Source-Observer Angle: 11.25 degrees Stability: 6 Wind Speed: 1.00 m/s

R E S U L T S

Asterisks (*) indicate plume impacts that exceed screening criteria

Maximum Visual Impacts INSIDE Class I Area

Screening Criteria ARE NOT Exceeded
Delta E Contrast

=========== ============ Backgrnd Theta Azi Distance Alpha Crit Plume Crit Plume

======== ===== === ======== ===== ==== ===== ==== =====

SKY 10. 84. 50.0 84. 2.00 1.337 .05 -.008

SKY 140. 84. 50.0 84. 2.00 .415 .05 -.009

TERRAIN 10. 84. 50.0 84. 2.00 .082 .05 .001

TERRAIN 140. 84. 50.0 84. 2.00 .025 .05 .001

Maximum Visual Impacts OUTSIDE Class I Area

Screening Criteria ARE NOT Exceeded
Delta E Contrast

=========== ============ Backgrnd Theta Azi Distance Alpha Crit Plume Crit Plume

======== ===== === ======== ===== ==== ===== ==== =====

SKY 10. 75. 48.4 94. 2.00 1.390 .05 -.008

SKY 140. 75. 48.4 94. 2.00 .431 .05 -.009

TERRAIN 10. 60. 45.7 109. 2.00 .113 .05 .002

TERRAIN 140. 60. 45.7 109. 2.00 .034 .05 .002

1

## STATOIL_Discoverer_Americas.OUT 8/9/2012

"Disco "
"ClassII "

4 3

15.670 778.200 .000 .000 .000

50.000 50.000 50.000 20.000

1 1.500 3

1 2.500 8

1 2.500 6

1 2.000 1

1 1.500 4

1 .040 1.000 6

1 11.250

34

1 0 5.0 163.8 15.6 34.9 41.4 .39 .050 2.00 .02 2.00

.01 2.00 .01 2.00 .00

2 0 10.0 158.8 24.0 26.9 35.6 .59 .050 2.00 .07 2.00

.02 2.00 .02 2.00 .01

3 0 15.0 153.8 29.3 22.1 31.4 .77 .050 2.00 .13 2.00

.04 2.00 .03 2.00 .01

4 0 20.0 148.8 33.0 18.8 28.3 .93 .050 2.00 .23 2.00

.07 2.00 .04 2.00 .01

5 0 25.0 143.8 35.7 16.5 26.0 1.08 .050 2.00 .37 2.00

.12 2.00 .06 2.00 .02

6 0 30.0 138.8 37.9 14.8 24.1 1.23 .050 2.00 .54 2.00

.17 2.00 .07 2.00 .02

7 0 35.0 133.8 39.7 13.5 22.7 1.36 .050 2.00 .71 2.00

.22 2.00 .08 2.00 .02

8 0 40.0 128.8 41.2 12.5 21.6 1.49 .050 2.00 .88 2.00

.27 2.00 .09 2.00 .03

9 0 45.0 123.8 42.5 11.7 20.7 1.60 .050 2.00 1.04 2.00

.32 2.00 .10 2.00 .03

10 0 50.0 118.8 43.7 11.1 20.1 1.70 .050 2.00 1.17 2.00

.36 2.00 .11 2.00 .03

11 0 55.0 113.8 44.7 10.7 19.6 1.78 .050 2.00 1.26 2.00

.39 2.00 .11 2.00 .03

12 0 60.0 108.8 45.7 10.3 19.3 1.86 .050 2.00 1.33 2.00

.41 2.00 .11 2.00 .03

13 0 65.0 103.8 46.7 10.0 19.2 1.91 .050 2.00 1.37 2.00

.42 2.00 .11 2.00 .03

14 0 70.0 98.8 47.5 9.9 19.2 1.96 .050 2.00 1.39 2.00

.43 2.00 .11 2.00 .03

15 0 75.0 93.8 48.4 9.8 19.3 1.99 .050 2.00 1.39 2.00

.43 2.00 .10 2.00 .03

16 0 80.0 88.8 49.3 9.8 19.6 2.00 .050 2.00 1.37 2.00

.43 2.00 .09 2.00 .03

17 0 85.0 83.8 50.1 9.8 20.1 1.99 .050 2.00 1.33 2.00

.41 2.00 .08 2.00 .02

18 0 90.0 78.8 51.0 9.9 20.7 1.98 .050 2.00 1.27 2.00

.40 2.00 .07 2.00 .02

19 0 95.0 73.8 51.9 10.2 21.6 1.94 .050 2.00 1.20 2.00

.37 2.00 .06 2.00 .02

20 0 100.0 68.8 52.8 10.5 22.7 1.90 .050 2.00 1.11 2.00

.34 2.00 .05 2.00 .01

21 0 105.0 63.8 53.8 10.9 24.1 1.83 .050 2.00 1.00 2.00

.31 2.00 .04 2.00 .01

22 0 110.0 58.8 55.0 11.4 26.0 1.76 .050 2.00 .88 2.00

.27 2.00 .03 2.00 .01

23 0 115.0 53.8 56.2 12.1 28.3 1.66 .050 2.00 .74 2.00

.23 2.00 .02 2.00 .01

24 0 120.0 48.8 57.6 13.0 31.4 1.56 .050 2.00 .60 2.00

.19 2.00 .01 2.00 .00

25 0 125.0 43.8 59.2 14.1 35.6 1.45 .050 2.00 .45 2.00

.14 2.00 .01 2.00 .00

26 0 130.0 38.8 61.2 15.6 41.4 1.32 .050 2.00 .32 2.00

.10 2.00 .00 2.00 .00

27 0 135.0 33.8 63.6 17.6 50.0 1.18 .050 2.00 .20 2.00

.06 2.00 .00 2.00 .00

1

## STATOIL_Discoverer_Americas.OUT 8/9/2012

28 0 140.0 28.8 66.8 20.3 63.6 1.03 .050 2.00 .11 2.00

.03 2.00 .00 2.00 .00

29 0 145.0 23.8 71.2 24.2 88.4 .88 .050 2.00 .05 2.00

.02 2.00 .00 2.00 .00

30 0 150.0 18.8 77.8 30.3 146.6 .71 .050 2.00 .02 2.00

.01 2.00 .00 2.00 .00

31 0 155.0 13.8 88.9 41.0 438.7 .54 .050 2.00 .00 2.00

.00 2.00 .00 2.00 .00

32 0 .2 168.5 1.0 49.0 49.5 .07 .050 2.68 .00 2.00

.00 2.68 .00 2.00 .00

33 1 84.4 84.4 50.0 9.8 20.0 2.00 .050 2.00 1.34 2.00

.42 2.00 .08 2.00 .02

34 1 84.4 84.4 50.0 9.8 20.0 2.00 .050 2.00 1.34 2.00

.42 2.00 .08 2.00 .02

34

1 0 5.000 .050 -.000 .000 -.000 .000 .000 .000 .000 .000

.000 .000 -.000 .000

2 0 10.000 .050 -.001 .000 -.001 .000 -.001 .000 -.001 .000

.000 .000 -.000 .000

3 0 15.000 .050 -.002 .000 -.002 .000 -.002 .000 -.002 .000

.000 .000 -.001 .000

4 0 20.000 .050 -.003 .001 -.004 .001 -.004 .000 -.004 .000

.000 .000 -.001 .000

5 0 25.000 .050 -.004 .001 -.005 .001 -.006 .001 -.007 .001

.000 .000 -.001 .000

6 0 30.000 .050 -.005 .001 -.006 .001 -.009 .001 -.010 .001

.000 .001 -.001 .001

7 0 35.000 .050 -.006 .001 -.007 .001 -.012 .001 -.012 .001

.000 .001 -.002 .001

8 0 40.000 .050 -.007 .001 -.008 .001 -.014 .001 -.015 .001

.000 .001 -.002 .001

9 0 45.000 .050 -.008 .002 -.009 .002 -.016 .002 -.017 .002

.000 .001 -.002 .001

10 0 50.000 .050 -.008 .002 -.009 .002 -.018 .002 -.019 .002

.000 .001 -.002 .001

11 0 55.000 .050 -.008 .002 -.010 .002 -.019 .002 -.020 .002

.000 .001 -.002 .001

12 0 60.000 .050 -.008 .002 -.010 .002 -.020 .002 -.021 .002

.000 .001 -.002 .001

13 0 65.000 .050 -.008 .002 -.010 .002 -.021 .002 -.021 .002

.000 .001 -.002 .001

14 0 70.000 .050 -.008 .002 -.010 .002 -.021 .002 -.022 .002

.000 .001 -.002 .001

15 0 75.000 .050 -.008 .001 -.009 .001 -.021 .002 -.022 .002

.000 .001 -.002 .001

16 0 80.000 .050 -.008 .001 -.009 .001 -.020 .002 -.021 .002

.000 .001 -.002 .001

17 0 85.000 .050 -.008 .001 -.009 .001 -.020 .001 -.021 .001

.000 .001 -.002 .001

18 0 90.000 .050 -.007 .001 -.009 .001 -.019 .001 -.020 .001

.000 .001 -.002 .000

19 0 95.000 .050 -.007 .001 -.008 .001 -.018 .001 -.019 .001

.000 .000 -.002 .000

20 0 100.000 .050 -.007 .001 -.008 .001 -.017 .001 -.017 .001

.000 .000 -.002 .000

21 0 105.000 .050 -.006 .001 -.007 .001 -.015 .001 -.016 .001

.000 .000 -.001 .000

22 0 110.000 .050 -.006 .000 -.007 .000 -.014 .000 -.014 .000

.000 .000 -.001 .000

23 0 115.000 .050 -.005 .000 -.006 .000 -.012 .000 -.012 .000

.000 .000 -.001 .000

24 0 120.000 .050 -.005 .000 -.005 .000 -.010 .000 -.010 .000

.000 .000 -.001 .000

25 0 125.000 .050 -.004 .000 -.005 .000 -.008 .000 -.008 .000

.000 .000 -.001 .000

26 0 130.000 .050 -.003 .000 -.004 .000 -.005 .000 -.006 .000

.000 .000 -.001 .000

2

## STATOIL_Discoverer_Americas.OUT 8/9/2012

27 0 135.000 .050 -.002 .000 -.003 .000 -.003 .000 -.004 .000

.000 .000 -.001 .000

28 0 140.000 .050 -.001 .000 -.002 .000 -.002 .000 -.002 .000

.000 .000 -.000 .000

29 0 145.000 .050 -.001 .000 -.001 .000 -.001 .000 -.001 .000

.000 .000 -.000 .000

30 0 150.000 .050 -.000 .000 -.000 .000 -.000 .000 -.000 .000

.000 .000 -.000 .000

31 0 155.000 .050 .000 .000 .000 .000 .000 .000 .000 .000

.000 .000 .000 .000

32 0 .228 .050 .000 .000 .000 .000 .000 .000 .000 .000

.000 .000 .000 .000

33 1 84.375 .050 -.008 .001 -.009 .001 -.020 .001 -.021 .001

.000 .001 -.002 .001

34 1 84.375 .050 -.008 .001 -.009 .001 -.020 .001 -.021 .001

.000 .001 -.002 .001

3