Addendum to Appendix 3

Vancouver Portion of the Portland-Vancouver Ozone Maintenance Plan Emission Inventory Methodology / Documentation

Table of Contents

Introduction

1. Point Sources

2. Area Sources

3. On-road Mobile Sources

4. Non-road Mobile SourcesIntroduction This document provides more detail on the emission inventories found in the Vancouver Portion of the Ozone Maintenance Plan. For purposes of this Plan, Clark County emissions are used to represent the Vancouver Portion of the AQMA si nce most of Clark County’s industrial and commercial activities and the majority of its populat ion are located in or near the AQMA. Also, using countywide estimates will facilitate comp arison with future year National Emission Inventory submittals. The attainment year (base y ear) emission inventory (2002) for area sources,

non-road mobile and on-road mobile sources and Title 5 point sour ces reflects the 2002 Consolidated Emissions Reporting Rule (CERR) National Emission Inventory (NEI) submitted by DEQ and SWCAA with few exceptions and is documented in Appendix 3 and 4. The 2015 emissions forecast used in the modeling study reflects 2002 emissions, increased by expected growth in various sectors. Growth factors fo r various source sectors were derived from the 2002 “Economic Report to the Metro Council, 200 0-2030 Regional Forecast for the PortlandVancouver, Metropolitan Area”, (see Appendix 5).

Following are the 2002 Attainment Inventory and the 2015 Growth Projection Inventory

summaries.Place here:

 2002 Attainment Inventory – (filename: Master Planning 2002 2015 all categories summary, tab: attain-ei-2002)

 2002 Attainment Inventory; 2015 Growth Projection Emission Inventory - (filename: Master Planning 2002 2015 all categories summary, tab: maint-project-ei 2002-2015)1. Point Sources

Point source data is based on data submitted by permitted facilities and reflects actual 2002 emissions reported in annual reports to SWCAA. Within the Portland-Vancouver AQMA, large industrial point sources that emit more than 10 tons/year of VOC, 40 tons/year of NO

x , or 100 tons/year of CO were inventoried. Outsid e of the Portland-Vancouver AQMA but within 25 miles of the AQMA boundary, point sources that emit more than 40 tons/year of NO

x or 100 tons/year of VOC or CO were inventoried.

Fourteen sources were counted as large point sources for the Portland Vancouver AQMA. One source, Noveon Kalama (formerly Kalama Chemical, now Emerald Kalama) was identified as meeting the criteria outlined above within the 25 mile boundary of the AQMA. Twenty one sources were considered small point sources and were included in the area source category under small point sources. A spreadsheet showing SCC Codes for both large and small point sources

follows.

Emissions from these point sources may be include d in values arrived at using the area source estimation methods and so there is potential for do uble counting of emissions from these sources. In order to avoid double counting, SCC codes fro m point sources were evaluated to determine if these emissions were estimated as part of area source estimates. The only point source falling into

the commercial/institution distillate oil and natu ral gas boiler categories (10300603) was the Clark Public Utilities/ River Road Generating Pr oject. Emissions from this source were not subtracted from the Area Source Category (comme rcial/institutional natural gas boiler category 2403006000) because these emissions were determined to be insignificant. In cross-walking the SCC and SIC codes for point and area sources fo r the Surface Coating category, there was no overlap found. These two codes address different types of point sources. The SIC code covers wood cabinets, fabricated structural metal a nd household AV equipment. The area sources SCC codes cover factory finished wood, metal cans, machinery, motor vehicles and more. There were no point source components found in the SCC Code series 401002xx, and 401003xx, the degreasing category. Graphic Ar ts point sources beginning with 405 overlap the area source Graphic Arts category. Emissions from these sources were subtracted from the area source Graphic Arts category. Emissions from Tetra Pak, The Columbian and the Bemis Company from the SCC code category series 405xx were subtracted from the Area Source Graphic Arts category. See the following Point Source Com ponent Adjustment spreadsheet for details.

2015 point source projections were calculated using actual 2002 emissions values and increased by expected employment projections for each i ndustry at the growth rate shown in the Metro report. Table A13 (page 107) in the modeling report shows which Metro codes correspond to specific SIC codes. Then, Table A.6 (page 101) shows the Metro code corresponding to the linear, non-compounding growth factor. For example, Attbar belongs to SIC code 3089. SIC code series 30 corresponds to Metro Code 18 - Durable Goods, other. 2002 VOC emissions from Attbar are multiplied by the Metro growth rate of 2.21% and thirteen years of growth, then 2002 emissions are added in to project emissions of 53 tons for Attbar for 2015 (equation shown below).

Example: Attbar SIC 30 = Metro 18 - Durable Goods, other

2002

VOC SIC metro no Linear compounding factor from

Table A.6

41.4 3089 18 2.21%

2015 VOC= 53.29 41.4 + (41.4 * 0.0221 * 13) = 53.2942 2002 base year + (2002 base year * linear non-compounding growth factor * 13 growth years) = 2015 projectionThe assumptions and values for the point s ource growth projections and maintenance

demonstrations are shown in the 2002 A ttainment, 2015 Growth Projection and 2015 Maintenance Demonstration Inventory Summary sp readsheet that follows. The growth projection

and maintenance demonstration scenarios are desc ribed in detail in Section 5.0 of the Plan.Place here:

 Point Sources 2002 - (filename: Master Pla nning 2002 2015 all categories summary, tab: point02)

 SCC Codes detail for Large Sources – 2002 (f ilename: WA 2015 PTE Work_rev2, tab: SCC Summary-large sources-02)

 SCC Codes detail for Small Sources – 2002 - (filename:WA 2015 PTE Work_rev2, tab: SCC Summary-small sources-02)

 Point Sources 2015 - (filename: Master Pla nning 2002 2015 all categories, tab: point15

 Point Source Component Adjustment of Ar ea Source Emissions (filename: WA 2015 PTE Work_rev2;tab: dbl-count-areasource)

 2002 Attainment, 2015 Growth Projecti on and 2015 Maintenance Demonstration Inventory Summary – (filename: WA 2015 PTE Work_rev2;tab: pointsource-proj-maint2. Area sources Area source emissions were taken from the NEI with few exceptions. These emissions were calculated following EPA guidance for the 2002 NEI. The future year (2015) emission inventory was developed using growth factors depending on the surrogates developed for each source category. Federally mandated control strategies and foreseeable changes were also taken into account. The 2015 emissions inventory assumes a linear, non-compounding population growth rate of 1.8% per year, and household growth rate of 2.0% per year from the Metro Report. With the exception of stage II (vehicle refueling), each area source category SCC code was assigned one of these growth factors. Stage II emissions fo r 2015 were calculated specifically for 2015 and

are documented in the Onroad Mobile docu mentation in the Onroad section below.

The area source emission inventory was adjusted to reflect summertime conditions when used in the modeling analysis and maintenance demonstration.

See the following documentation for methodology description for the specific area source categories listed below from the 2002 Washington inventory (From the Washington State Base Year 2002 County Inventories, Prepared by Washi ngton State Department of Ecology Air Quality Program, Sally Otterson, Beth Stipek, July 15, 2004, (3-3-2006: locomotive correction)).

 Locomotives (3.7)

 Prescribed Burning (there was no growth projection for this category) (3.8)

 Residential Yard and Trash waste (3.10 and 3.11)

 Architectural coatings (3.13)

 Commercial/Consumer solvents (3.14)

 Residential Wood Combustion (3.15)

Traffic Markings values were calculated using gallons used per person and the emission factor from the EIIP Chapter 14 (5/17/97) to obtain lb VOC/person. Then, using population projections, VOC emissions were calculated for this category. See the traffic markings spreadsheet below for

details.

Graphic Arts Inventory emissions were calcu lated based on EIIP Volume III, Chapter 7 (11/18/96) Alternate Method 2 which multiplies projected 2015 population by the EIIP emission factor of 1.3 lbs VOC/person.

The 2002 values reported for Stage I gas underground tank filling emissions are projected to 2015 based on population projections. Stage II gas di spensing emissions for 2002 were calculated by SWCAA; Stage II emissions for 2015 were calculated by DOE; methodology is shown in the

Onroad Mobile documentation in the Onroad section below.Place here:

 Listed sections of : Washington State Base Year 2002 County Inventories, Prepared by Washington State Department of Ecology Air Quality Program, Sally Otterson, Beth Stipek, July 15, 2004, (3-3-2006: locomotive correction) pages 32-58 (page numbers on modified document attached 44 – 77 except for Section 3.12 Dry Cleaning, page 60, and Section 3.9 Agricultural Burning pages 50-54) page numbers do not match up with original DOE document

 WSU Modeling Report (Appendix 4) Appendix B: Area Source Category Emission Calculation Methodologies, pages 108-110

 Traffic Markings (filename: 2015 Master _areasources, tab: Traffic Markings)3. Onroad (mobile) Sources

On-road mobile source emissions for the attainme nt inventory were calcu lated using Mobile 6.2

emissions and traffic data from the Southwest Washington Regional Transportation Council (RTC) by Washington Department of Ecology. Gasoline vehicles are a significant source of

VOC and NO

x emissions, as are diesel powered vehicles. Differences occur between the Maintenance Plan Emission inventory values fo r mobile sources and the output values in the report below due to differences in rounding. Do cumentation for these calculations follows.

 Onroad Mobile section of documentation from DOE’s Sally Otterson’s analysis conducted on May 31, 2006. (filename: swmaint_rev.doc)4. Nonroad Mobile Sources Nonroad mobile sources, excluding ships, locomotiv es and aircraft were calculated using EPA’s Nonroad2004 model to estimate emissions by Washington DOE. Nonroad sources are shown and included on both the 2002 and 2015 projecti on and maintenance inventories. Emission from Locomotives from the CERR inventory from area source category series 2285xx for Passenger Trains, Class I operations, Yard Locomotives, were added to the Nonroad summary.

Documentation for these calculations follows.

SWCAA did not calculate Columbia River ship traffic emissions (Commercial Marine) as emissions from these sources were calculated by DEQ.

Emissions from locomotives from the CERR inventory from area source category series 2285xx for Passenger Trains, Class I operations, Yard Locomotives, were added to the Nonroad

summary.

Place here:

 Nonroad Section of documentation from DOE’s Sally Otterman analysis conducted on May 31, 206. (swmaint_rev 

### .doc)