Washington State Department of Ecology

2007

Ambient Air Monitoring Network Report

 

Washington State Department of Ecology

300 Desmond Drive/PO Box 47600

Olympia, Washington 98504-7600

Publication number: 07-02-011

If you need this publication in another format, please call Tami Dahlgren at (360) 407-6800. Persons with hearing loss can call 

711 for Washington Relay Service. Persons with a speech disability can call 877-833-6341.
Ecology Page 1 4/1/2013

Executive Summary

Purpose of the report

The Department of Ecology (Ecology) reviews its ambient air quality monitoring network annually to

ensure that it collects adequate, representative, and useful air quality data. This report gives the results of 

the 2007 review, including:

 Identifying modifications to Ecology’s ambient air monitoring network since the 2006 annual 

network report

 Identifying proposed modifications to the network for the upcoming year

 Documenting Ecology’s ambient air quality monitoring needs, goals and priorities 

Background information

The United States Environmental Protection Agency (EPA) ambient air quality surveillance regulations

(Code of Federal Regulations, Title 40, Part 58 (40 CFR Part 58)) require states to establish air quality 

surveillance systems in their State Implementation Plans (SIPs). An air quality surveillance system 

consists of a network of monitoring stations designated as State and Local Air Monitoring Stations 

(SLAMS). These stations measure ambient concentrations of those air pollutants for which 40 CFR Part 

50 sets standards.

Monitoring network requirements

SLAMS must meet requirements of 40 CFR Part 58 contained in:

 Appendix A (Quality Assurance Requirements)

 Appendix C (Ambient Air Quality Monitoring Methodology)

 Appendix D (Network Design Criteria)

 Appendix E (Probe and Path Siting Criteria) 

States determine if they conform with Appendices A and C in part through periodic systems and 

performance audits (per Section 2.4 of Appendix A). States conform with Appendices D and E by 

conducting an annual network review of their air quality surveillance systems (per 40 CFR 58.20(d)). 

The annual network review:

 Determines if an ambient air quality monitoring network is achieving its required air 

monitoring objectives

 Identifies changes to the network needed to enable an organization to meet its objectives
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Using monitoring data

Ecology uses its air monitoring data to: 

 Determine compliance with the national ambient air quality standards (NAAQS)

 Determine maximum pollutant concentrations

 Forecast air quality

 Evaluate the effectiveness of air pollution control programs,

 Evaluate the effects of air pollution on public health,

 Track the progress of SIPS

 Support dispersion models

 Determine air quality trends

 Develop responsible and cost-effective pollution control strategies
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Table of Contents

Section Page

1.0 Introduction............................................................................................................. 4

2.0 Regulatory Requirements and Other Data Needs................................................... 5

2.1 Appendix D Requirements.......................................................................... 5

2.1.1 Monitoring Objectives and Spatial Scales......................................5

2.1.2 Number of SLAMS Sites................................................................6

2.2 Appendix E Requirements.......................................................................... 7

2.3 Other Ambient Air Monitoring Needs........................................................ 7

3.0 Network Review Procedure.................................................................................... 9

3.1 Network Review Team and Preparation..................................................... 9

3.2 Network Modifications............................................................................... 9

3.3 Determining Conformance with Appendix D and 

Special Monitoring Requirements.............................................................. 9

3.3.1 Number and Location of Monitors................................................. 10

3.4 Determining Conformance with Appendix E Requirements..................... 10

4.0 Network Evaluation and Recommendations........................................................... 11

4.1 Carbon Monoxide...................................................................................... 11

4.2 Ozone................................................................................................... 13

4.3 Nitrogen Dioxide......................................................................................... 17

4.4 Sulfur Dioxide............................................................................................ 18

4.5 PM10.................................................................................................. 19

4.6 PM2.5................................................................................ 23

4.7 PM2.5 monitoring other........................................................... 30

4.8 Trace Gas monitoring .......................................................... 31

4.9 Toxics/Speciation monitoring ................................................... 32

5.0 References............................................................................................................... 34

List of Tables....................................................................................................................... iii
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List of Tables

Number Page

2-1 Relationship Among Monitoring Objectives and 

Scales of Representativeness................................................................................... 6

2-2 Summary of Spatial Scales for SLAMS ............................................................... 6

2-3 Summary of Probe and Monitoring Path Siting Criteria......................................... 8
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1.0 Introduction

The Code of Federal Regulations, Title 40, Part 58 (40 CFR Part 58) contains the EPA’s ambient air 

quality surveillance regulations. Section 58.20 requires states to establish air quality surveillance systems 

in their State Implementation Plans (SIPs). The air quality surveillance system consists of a network of 

monitoring stations designated as SLAMS. These stations measure ambient concentrations of those air 

pollutants for which standards exist in 40 CFR Part 50 and Part 58, Appendices A (Quality Assurance 

Requirements), C (Ambient Air Quality Monitoring Methodology), D (Network Design Criteria) and E 

(Probe and Path Siting Criteria). States determine conformance with Appendices A and C in part through

periodic systems and performance audits (per Section 2.4 of Appendix A). States conform with 

Appendices D and E by conducting an annual network review of their air quality surveillance systems 

(per 40 CFR 58.20(d)). The annual network review:

 Determines if an ambient air quality monitoring network is achieving its required air 

monitoring objectives

 Identifies changes to the network needed to enable an organization to meet its objectives

The annual network review determines if the network achieved its required air monitoring objectives, and 

if it should be modified (e.g. termination, relocation or establishment of monitoring stations) to meet

those objectives. The main purpose of this review is to ensure that an ambient air quality monitoring 

network collects adequate, representative, and useful air quality data. The ambient air quality data from 

the State of Washington, Department of Ecology’s (Ecology’s) network is used for a variety of purposes 

including:

 determining compliance with the national ambient air quality standards (NAAQS),

 determining the location of maximum pollutant concentrations,

 determining the effectiveness of air pollution control programs,

 evaluating the effects of air pollution on public health,

 tracking the progress of SIPS,

 supporting dispersion models

 developing responsible, cost-effective control strategies,

 developing air quality trends.
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2.0 Regulatory Requirements and Other Data Needs

2.1 Appendix D Requirements

Appendix D of 40 CFR 58 describes concepts for designing the SLAMS network. It addresses 

monitoring objectives, and the criteria for selecting the location and number of air monitoring stations. 

The concepts and guidance in Appendix D, as well as other non-regulatory EPA data needs, should be 

considered when evaluating the adequacy of the SLAMS network.

2.1.1 Monitoring Objectives and Spatial Scales

Appendix D calls for the design of SLAMS networks to meet a minimum of six basic objectives:

(1) to determine the highest pollutant concentrations expected in the area covered by the network;

(2) to determine representative pollutant concentrations in areas of high population density;

(3) to determine the impact of significant sources or source categories on pollutant concentrations in 

the ambient air;

(4) to determine general background pollutant concentrations;

(5) to determine the regional extent of pollutant transport between populated areas, and 

(6) to determine the impacts (e.g., visibility impairment, vegetation effects) in more rural and remote 

areas on the secondary (i.e., welfare) standards.

SLAMS networks should be designed to provide data for meeting the monitoring objectives described 

above and to assist the EPA and States in solving environmental problems.

Appendix D also provides guidance on spatial scales of representativeness for stations in a SLAMS 

network (Table 2-1). Ideally, the monitor is located so that its sample represents the air quality over the 

entire area that the monitoring station is intended to represent (Table 2-2). 
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Table 2-1. Relationship Among Monitoring Objectives and

Scale of Representativeness

Monitoring Objectives Appropriate Siting Scales

Highest concentration Micro, middle, neighborhood, urban

Population Neighborhood, urban

Source impact Micro, middle, neighborhood

General/Background Neighborhood, urban, regional

Regional transport Urban/regional

Welfare-related impacts Urban/regional

Table 2-2. Summary of Spatial Scales for SLAMS

Scales Applicable for SLAMS

SO2 CO O3 NO2 Pb PM10 PM2.5

Micro..............     

Middle............       

Neighborhood       

Urban.............      

Regional.........     

2.1.2 Number of SLAMS Sites

Appendix D to 40 CFR Part 58 does not contain criteria for determining the total number of stations in the 

SLAMS network except that a minimum number of SLAMS lead, SO2, and PM2.5 sites are required. For 

lead, EPA is requiring State and local agencies to focus their network design efforts on establishing 

monitoring stations around lead stationary sources which generate or have the potential to generate 

exceedances of the quarterly lead NAAQS. Sources around which lead monitoring networks should be 

established are those emitting five or more tons per year or smaller stationary sources which may be 

problematic based on the size of the facility and their proximity to populated neighborhoods. 

EPA recommends a minimum of two lead sites per source, one to measure stack impacts and the second 

to measure fugitive emissions. Other factors such as topography, source type, proximity and locations of 

nearby populations may affect the number of stations in the network.

SLAMS SO2 monitoring requirements for counties not within the boundaries of any Consolidated 

Metropolitan Statistical Area/Metropolitan Statistical Area (CMSA/MSA) are based on the emissions of 

SO2 in the airshed, as listed in Table 2-3. A minimum number of SO2 SLAMS sites are required for 

targeted sources of SO2 emissions. Other than these requirements, the optimum size of a particular 

SLAMS network involves tradeoffs between data needs and available resources which can best be 

resolved during the network design process.

NA- not applicable

a

For PM10 24 Hr 1st Maximum Value (g/m3) Annual Arithmetic Mean (g/m3)

> 180 (high) > 60

> 120 (medium) > 40

< 119 (low) < 39

b

In addition, one NAM population-oriented site is required in each populated area (either a MSA/CMSA, town or county) where 

lead violations have been measured over the most recent 8 calendar quarters.
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2.2 Appendix E Requirements

Appendix E contains siting criteria to be applied to ambient air quality analyzers or samplers after the 

general site location has been selected based on the monitoring objectives and spatial scales of 

representativeness presented in Appendix D and summarized in Section 2.1 of this document. The siting 

criteria presented in Appendix E are summarized in Table 2-6.

EPA believes that most sampling probes or monitors can be located so that they meet the Appendix E 

siting requirements. Some existing stations, however, may not meet these requirements and yet still 

produce useful data for some purposes. EPA will consider written requests from the State to waive one or 

more siting criteria for some monitoring stations provided that the State can demonstrate the following: 

(1) the site is as representative of the monitoring area as it would be if siting criteria were met; and (2) the 

siting criteria cannot be met because of physical constraints (e.g., inability to locate the station the 

necessary setback distance from roadways or obstructions). Waivers may be granted to existing SLAMS 

if one of these criteria is met; waivers may be granted for new SLAMS only if both criteria are met. 

Written requests for waivers must be submitted to the EPA Regional Administrator. 

2.3 Other Ambient Air Monitoring Data Needs

Washington has a number of special purpose monitors (SPMs) deployed throughout the State for PM10, 

PM2.5, CO and NO2, monitoring. They are used for a variety of purposes, including Washington’s Air 

Quality Index program, ambient air quality assessment and special studies such as secondary aerosol and 

ozone precursor assessments SPM monitoring sites often utilize Federal Reference Method (FRM) 

sampling equipment, and are operated in accordance with CFR requirements for quality assurance and 

quality control. SPM designation for criteria pollutant monitoring sites allows Ecology to assess ambient 

particulate levels within regions of the State, while providing the flexibility to relocate the sites if it is 

determined there is no concern for NAAQS violations in the area (typically after three years of data 

collection). SPM sites may be added to Ecology’s SLAMS network when a NAAQS exceedance has 

been recorded, or if elevated pollutant concentrations are consistently measured at the site. 
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Table 2-3. Summary of Probe and Monitoring Path Siting Criteria

Pollutant Scale [maximum monitoring 

path length, meters]

Height from 

ground to probe 

or 80% of 

monitoring 

patha(meters)

Horizontal and 

vertical distance from 

supporting 

structuresb,h to probe 

or 90% of monitoring 

patha(meters)

Distance from 

trees to probe or 

90% of 

monitoring 

patha(meters)

Distance from roadways 

to probe or monitoring 

patha(meters)

SO2

c,d,e,f Middle [300m] Neighborhood, 

Urban, and Regional [1km]

3-15 >1 >10 N/A

COd,e,g Micro, Middle [300m] 

Neighborhood [1km]

30.5; 3-15 >1 >10 2-10; See Table 2i

for 

middle and neighborhood 

scales.

O3

c,d,e Middle [300m] Neighborhood, 

Urban, and Regional [1km]

3-15 >1 >10 See Table 1ifor all scales.

Ozone 

precursors

(for 

PAMS)c,d,e

Neighborhood and urban [1km] 3-15 >1 >10 See Table 4ifor all scales.

NO2

c,d,e Middle [300m] Neighborhood 

and Urban [1km]

3-15 >1 >10 See Table 1ifor all scales.

PM10

c,d,e,f Micro; Middle, Neighborhood, 

Urban and Regional

2-7 (Micro);

2-15 (All other 

scales).

>2 (All scales, 

horizontal distance 

only).

>10 (All scales) 2-10 (Micro); See Figure 

2

i

for all other scales.

N/A-not applicable

aMonitoring path for open path analyzers is applicable only to middle or neighborhood scale CO monitoring and all applicable scales 

for monitoring SO2, O3, O3 precursors, and NO2.

bWhen probe is located on a rooftop, this separation distance is in reference to walls, parapets, or penthouses located on roof.

c

Should be >20 meters from the dripline of tree(s) and must be 10 meters from the dripline when the tree(s) act as an obstruction.

dDistance from sampler, probe, or 90% of monitoring path to obstacle, such as a building, must be at least twice the height the obstacle 

protrudes above the sampler, probe, or monitoring path. Sites not meeting this criterion may be classified as middle scale.

eMust have unrestricted airflow 270 around the probe or sampler; 180 if the probe is on the side of a building.

fThe probe, sampler, or monitoring path should be away from minor sources, such as furnace or incineration flues. The separation 

distance is dependent on the height of the minor source’s emission point (such as flue), the type of fuel or waste burned, and the 

quality of the fuel (sulfur, ash, or lead content). This criterion is designed to avoid undue influences from minor sources.

g

For microscale CO monitoring sites, the probe must be .10 meters from a street intersection and preferably at a midblock location.

h

For collocated Pb and PM10 samplers, a 2-4 meter separation distance between collocated samplers must be met.

iTables and figures are in Appendix E of 40 CFR Part 58.
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3.0 Network Review Procedure

3.1 Network Review Team and Preparation

Network report participants include Washington Department of Ecology Air Monitoring staff and where 

applicable, representatives from Washington’s seven local air agencies. Sufficient information must be 

provided to determine conformance of the network with regulatory network design and siting 

requirements specified in 40 CFR Part 58, Appendices D and E as well as to determine conformance of 

the network design and siting requirements specified for all special ambient air monitoring networks.

3.2 Network Modifications

Modifications to the SLAMS network are addressed in 40 CFR 58.25, 58.36, and 58.46, respectively. 

Under Section 58.25, States are required to annually develop and implement schedules to modify the 

SLAMS network to eliminate any unnecessary stations or to correct any inadequacies indicated by the 

annual network review required by 58.20(d). As part of the annual network review, evaluations of the 

special networks established as partnership agreements between EPA and Ecology should also be 

conducted. Modifications to these networks should be recommended as a result of this annual report.

An important objective of the network modification process is determining whether or not sufficient 

ambient air quality information and data are being provided by the regulatory and other special 

monitoring networks to satisfy the principal data needs. If sufficient air quality data are not being 

collected, the deficient area must be identified and corrective action taken to resolve the problem. 

Conversely, if it is determined that excessive data are being collected (e.g., there are redundant sites 

resulting in data that agree closely), then efforts need to be taken to determine where dis-investment 

should be made and on what schedule.

Network modifications may be initiated by EPA or proposed by Ecology and agreed to by EPA. Network 

modifications may result from revisions to the Part 58 regulations, systems audits, site visits, or 

performance evaluations; special studies/saturation sampling, population increases/decreases; air quality 

concentrations consistently recorded below the NAAQS; loss of permission to use a site; demolition of a 

building which is used for monitoring; building construction; growth of trees; changes in roadways; 

change in neighborhood type of use, etc.

3.3 Determining Conformance with Appendix D and Special Monitoring Requirements

With regard to Appendix D requirements, this network review is intended to determine the adequacy of 

the network in terms of number and location of monitors. Specifically, (1) is Ecology meeting the 

number of monitors required by the Part 58 Appendix D design criteria requirements; (2) are the 

monitors properly located based on the monitoring objectives and spatial scales of representativeness 

presented in Appendix D. For special monitoring networks, conformance determinations will be 

conducted in accordance with program documents applicable to the special networks.
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3.3.1 Number and Location of Monitors

For SLAMS the number of monitors required, and their locations, is not specified in the regulations but 

rather is determined by EPA Region 10 and Ecology on a case-by-case basis to meet the monitoring 

objectives specified in Appendix D. Adequacy of the network may be determined by using a variety of 

tools, including the following:

 analyses of historical monitoring data,

 maps of emissions densities,

 dispersion modeling,

 special studies/saturation sampling,

 best professional judgement,

 SIP requirements,

 revised monitoring strategies (e.g., new regulations, reengineering air monitoring network),

 monitoring network maps and network descriptions with site objectives defined.

Appropriate location of monitors can be determined on the basis of stated objectives. Maps, graphical 

overlays, and GIS-based information are extremely helpful in visualizing or assessing the adequacy of 

monitor locations. Plots of potential emissions and/or historical monitoring data versus monitor locations 

are especially useful. When questions arise about the adequacy of a particular location, modeling or 

special studies (including saturation monitoring studies) may be appropriate.

Monitor locations are based on the objectives specified in Appendix D, Section 3. Most often, these 

locations are those that have high concentrations and large population exposure. 

Population information may be obtained from the latest census data and ambient monitoring data from 

AQS. If the zip codes for various monitoring locations are obtained, use of electronic media census 

information and GIS-based information can be more easily combined with ambient monitoring data.

For special monitoring serving AQI, etc., program documents applicable to the network must be reviewed 

to determine the goals and specific siting criteria for the network. Conformance with monitoring 

objective determinations of the special network should be conducted using procedures similar to those 

used for Appendix D evaluations (i.e., are the number of monitors appropriate and are the monitors 

properly located).

3.4 Determining Conformance with Appendix E Requirements

Applicable siting criteria for SLAMS are specified in 40 CFR 58, Appendix E. The on-site visit itself 

consists of the physical measurements and observations needed to determine compliance with the 

Appendix E requirements, such as height above the ground level, distance from trees, paved or vegetative 

ground cover, etc.
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4.0 Network Evaluation and Recommendations/Modifications

4.1 Carbon Monoxide (CO, 42101)

National Ambient Air Quality Standard (NAAQS):

 1-hour average concentration not to exceed 35 ppm, on more than one occasion in a calendar 

year, measured at any monitoring site.

 8-hour average concentration not to exceed 9 ppm for any 8-hour period, on more than one 

occasion in a calendar year, measured at any monitoring site.

Washington’s Carbon Monoxide monitoring network is comprised of two sites statewide.

(Carbon Monoxide, 42101)

AIRS # Site Name Est. Type Scale Sampling 

Freq.

Action for 

2007

530330080 Seattle/Beacon Hill 2/1/00 SPMS Urban Continuous Trace level est.

530330077 Seattle/4

th & Pike 4/1/77 NAMS Micro Continuous Discontinued

530330087 Seattle/Zanadu Comics 11/15/76 SLAMS Micro Continuous Discontinued

530330019 Bellevue/148th 12/1/98 SLAMS Micro Continuous Continue

530610004 Lynnwood/196th Lynnwood 9/28/98 SLAMS Micro Continuous Discontinued

530110010 Vancouver/Atlas & Cox 1/23/86 SLAMS M. concentration Continuous Discontinued

530530032 Tacoma/Pacific Avenue 12/16/83 SLAMS M. concentration Continuous Discontinued

530771002 Yakima/Tattoo Parlor 1. 8/27/75

2. 3/25/01

SLAMS M. concentration Continuous Discontinued

530630049 Spokane/3

rd & Washington 1/1/97 SLAMS Micro Continuous Continue

530630040 Spokane/Jack & Dan’s 12/1/83 SLAMS Middle Continuous Discontinued

Additional Monitors: None

Recommendations/Modifications: The criteria CO monitor at Seattle Beacon Hill has been replaced 

with a precursor (Trace level) CO instrument. The Yakima Tattoo Parlor site was discontinued on 

4/30/2006; the Seattle 4th & Pike, Seattle Zanadu, Lynnwood, Tacoma and Spokane Hamilton (Jack & 

Dan’s) CO sites were discontinued 6/30/06. The Vancouver CO site was discontinued on 9/30/06.

It is proposed the CO Bellevue (148th) and Spokane (3rd & Washington) sites in Washington be

designated as SLAMS sites. 

Bellevue/148th (formerly Union 76) - SLAMS

AIRS # 530330019 Method code: 054

Address: 2421 148th NE, Bellevue LAT/LONG: 047 37' 54" / 122 08' 34"

Monitoring objective: Highest Concentration MSA: Seattle-Bellevue-Everett, WA

Comments

Bellevue 148th is micro scale SLAMS site for CO established in 1998. It is located in Bellevue within a 

commercial area near a highly traveled commuter roadway (SR520). Bellevue 148th site represents the 

Bellevue/Eastside area. 

Exceedences

This site has not exceeded the daily or annual CO standard in the past 3 years.
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Spokane/3

rd & Washington - SLAMS

AIRS # 530630049 Method code: 054

Address: W. 408 3rd Avenue, Spokane LAT/LONG: 047 39' 13" / 117 25' 07"

Monitoring objective: Highest Concentration MSA: Spokane, WA

Comments

3

rd & Washington is a micro scale SLAMS site for CO established in 1997. It is located in the Downtown 

core of Spokane in a highly traveled commercial area. 3

rd & Washington is currently used for 

maintenance plan purposes. Spokane is a former CO non-attainment area.

Exceedences

This site has not exceeded the daily or annual standard for CO in the past 3 years.

Seattle/Beacon Hill – Proposed NCore - CO monitoring at Beacon Hill replaced w/Trace Level CO 

AIRS # 530330080 Method code: 054 (old) 593 (new)

Address: 4103 Beacon Avenue S., Seattle LAT/LONG: 047 34' 58" / 122 18' 30"

Monitoring objective: Population Exposure MSA: Seattle-Bellevue-Everett, WA

Discontinued Carbon Monoxide Sites

4

th & Pike/Seattle - Discontinued

AIRS # 530330077

Address: 1424 4th Avenue, Seattle 

Zanadu Comics/Seattle - Discontinued

AIRS # 530330087

Address: 1307 NE 45th, Seattle LAT/LONG: 047 39' 43" / 122 18' 46"

Atlas-Cox/Vancouver - Discontinued

AIRS # 530110010

Address: 8205 East 4th Plain Boulevard, Vancouver 

Lynnwood/Lynnwood - Discontinued

AIRS # 530610004

Address: 4434 196th Street SW, Lynnwood LAT/LONG: 047 49' 16" / 122 18' 37"

Pacific Avenue/Tacoma - Discontinued

AIRS # 530530032

Address: 1101 Pacific Avenue, Tacoma 

Jack & Dan’s Tavern/Spokane - Discontinued

AIRS # 530630040

Address: N.1226 Hamilton Street, Spokane LAT/LONG: 047 40' 10" / 117 23' 43"
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4.2 Ozone (O3, 44201)

National Ambient Air Quality Standards (NAAQS):

 1-hour average O3 concentration not to exceed 0.12 ppm at any given monitoring site. The 1-hour 

NAAQS may be waived by the EPA Regional Administrator if an area demonstrates consistent 

compliance.

 8-hour average of the 4th highest measured O3 concentration averaged over three consecutive

years, not to exceed 0.08 ppm at any given monitoring site.

Washington’s Ozone monitoring network is comprised of ten sites statewide. 

4.2 Ozone (O3, 44201)

AIRS # Site Name Est. Type Scale Sampling 

Freq.

Action

For 2007

530330080 Seattle/Beacon Hill 4/1/97 SLAMS Urban Continuous Continue

530330010 Issaquah/Lk. Sammamish 12/1/75 SLAMS Urban Continuous Continue

530330023 Enumclaw/Mud Mountain 7/8/98 SLAMS Urban Continuous Continue

530330017 North Bend/North Bend 6/1/98 SLAMS Urban Continuous Continue

530730005 Custer/FCC Loomis 5/1/89 SPMS Urban Continuous Discontinued

530531008 Pack Forest/Pack Forest 5/30/85 SLAMS Urban Continuous Continue

530530012 Mt. Rainier/Rainier 3 7/13/98 SLAMS NPS support site Continuous Continue

530110011 Vancouver/Mt. View HS 4/1/90 SLAMS Neighborhood Continuous Continue

530670002 Yelm /Yelm 5/9/97 SLAMS Urban Continuous Continue

530390003 Wishram/Wishram 4/5/93 SPMS USFS support site Continuous Discontinued

530630001 Cheney/Cheturn 4/1/99 SLAMS Urban Continuous Continue

530630046 Spokane/Greenbluff 4/1/90 SLAMS Urban Continuous Continue

Additional Monitors: 

Recommendations/Proposed Modifications: The FCC Loomis and Wishram sites have been 

discontinued. 

Ozone sites in the Washington are recommended as SLAMS with one exception. Seattle Beacon Hill is 

recommended as an NCore level 2 site. 

Ozone

Seattle/Beacon Hill - Proposed NCore 

AIRS # 530330080 Method code: 056

Address: 4103 Beacon Avenue S., Seattle LAT/LONG: 047 34' 58" / 122 18' 30"

Monitoring objective: Population Exposure MSA: Seattle-Bellevue-Everett, WA

Comments

Beacon Hill is an urban scale State and Local Air Monitoring Site for Ozone. Located south of downtown 

Seattle, within a City of Seattle park/reservoir. The Beacon Hill site contains Trace level CO, SO2, NO2, 

PM2.5, air toxics, speciation and other special studies. The Beacon Hill site is a long term trend site, a 

research site and a proposed NCore site.

Exceedences

This site has not exceeded the one or eight hour standard.
Ecology Page 15 4/1/2013

Issaquah/Lake Sammamish - SLAMS

AIRS # 530330010 Method code: 056

Address: 20050 SE 56th (Lk. Sammamish SP), Issaquah LAT/LONG: 047 33' 07" / 122 02' 40"

Monitoring objective: Population Exposure MSA: Seattle-Bellevue-Everett, WA

Comments

Lake Sammamish is an urban scale site for Ozone established in 1975. Located east of Seattle, within 

Lake Sammamish State Park. The Lake Sammamish site is a long term trends site. 

Exceedences

This site has not exceeded the one or eight hour standard in the past 3 years.

Enumclaw/Mud Mountain - SLAMS

AIRS # 530330023 Method code: 056

Address: 30525 SE Mud Mountain Road, Enumclaw LAT/LONG: 047 08' 28" / 121 56' 09"

Monitoring objective: Regional Transport MSA: Seattle-Bellevue-Everett, WA

Comments

Enumclaw Mud Mountain is an urban scale State and Local Monitoring Site (SLAMS) for Ozone 

established in 1998. Located 30 miles East of Seattle, outside of Enumclaw at the end of the Ozone 

transport zone near the Cascade Mountains. Enumclaw Mud Mountain historically has been the highest 

reading site in the Ozone network. 

Exceedences

This site has exceeded the one hour standard in 2006.

North Bend/North Bend - SLAMS

AIRS # 530330017 Method code: 056

Address: 42404 SE North Bend Way, North Bend LAT/LONG: 047 29' 23" / 121 46' 24"

Monitoring objective: Population Exposure MSA: Seattle-Bellevue-Everett, WA

Comments

North Bend is an urban scale site for Ozone established in 1998. Located outside of North Bend, 25 miles 

East of Seattle. North Bend typically indicates some of the highest readings in the Ozone network.

Exceedences

This site has not exceeded the one or eight hour standard for Ozone in the past 3 years.

Pack Forest/Pack Forest - SLAMS

AIRS # 530531008 Method code: 056

Address: .6 mi North of LaGrande on SR 7, Pierce Co. LAT/LONG: 046 50' 33" / 122 18' 55"

Monitoring objective: Highest Concentration MSA: Tacoma, WA

Adequacy

Pack Forest is a regional scale site for Ozone established in 1985. Pack Forest has been a high 

concentration, transport and long term trend site. 

Exceedences

This site has not exceeded the one or eight hour standard in the past 3 years.

Mt. Rainier/Rainier 3 - SLAMS

AIRS # 530530012 Method code: 056

Address: Jackson Visitors Center, Mount Rainier LAT/LONG: 046 47' 07" / 121 43' 58"

Monitoring objective: Background MSA: Tacoma, WA

Comments

Rainier 3 is a regional scale site for Ozone established in 1998. Located at the Paradise visitor’s center, it 

is a US Park Service (USPS) support site. Rainier 3 is part of an outreach project at the Jackson Visitors 

Center at Mt. Rainier National Park. 

Exceedences

This site has not exceeded the one or eight hour standard for Ozone in the past 3 years.
Ecology Page 16 4/1/2013

Vancouver/Mt. View High School - SLAMS

AIRS # 530110011 Method code: 056

Address: 1500 SE Blairmount Drive, Vancouver LAT/LONG: 045 36' 37" / 122 30' 59"

Monitoring objective: Population Exposure MSA: Portland-Vancouver, OR-WA

Comments

Vancouver Mt. View HS is an urban scale site for Ozone established in 1990. Located in a residential 

area, near downtown Vancouver. Vancouver Mt. View HS site represents the Portland/Vancouver air 

shed. It is part of the Ozone maintenance planning effort of the Southwest Clean Air Agency (SWCAA).

Exceedences

This site has not exceeded the one or eight hour standard for Ozone in the past 3 years.

Yelm/Yelm - SLAMS

AIRS # 530670005 Method code: 056

Address: NEW - 931 Northern Pacific Road, Yelm LAT/LONG: 046 57' 03" / 122 35' 43"

Monitoring objective: Population Exposure MSA: Olympia, WA

Comments

The Yelm site is urban scale site for Ozone established in 1997. Located in a commercial/residential area 

in Yelm. The Yelm site represents Ozone transport and meteorological impacts in the Southern Puget 

Sound area.

Exceedences

This site has not exceeded the one or eight hour standard for Ozone in the past 3 years.

Cheney/Cheney Turnbull - SLAMS

AIRS # 530630001 Method code: 056

Address: S. 26010 Smith Road, Cheney LAT/LONG: 047 24' 55" / 117 31' 49"

Monitoring objective: Unknown MSA: Spokane, WA

Commnets

Cheney Turnbull is a background/transport scale site for Ozone established in 1999. Located in the 

Turnbull Wildlife Refuge at Cheney, South of Spokane. Cheney Turnbull has been a high concentration 

site and a background/transport site for the Spokane area. A CFR required site by population. 

Exceedences

This site has not exceeded the one or eight hour standard for Ozone in the past 3 years.

Spokane/Greenbluff - SLAMS

AIRS # 530630046 Method code: 056

Address: E. 9814 Greenbluff Road, Spokane LAT/LONG: 047 49' 37" / 117 16' 31"

Monitoring objective: Unknown MSA: Spokane, WA

Comments

Spokane-Greenbluff is an urban scale site for Ozone established in 1990. Located in near Spokane. 

Spokane-Greenbluff works in conjunction with the Cheney site to identify Ozone patterns for the Spokane 

area. A CFR required site by population.

Exceedences

This site has not exceeded the one or eight hour standard for Ozone in the past 3 years.

Discontinued ozone sites:

Custer/FCC Loomis - Discontinued

AIRS # 530730005

Wishram/Wishram - Discontinued

AIRS # 530390003

 
Ecology Page 17 4/1/2013

4.3 Nitrogen Dioxide (NO2, 42602)

National Ambient Air Quality Standards (NAAQS):

 Annual arithmetic average concentration not to exceed 0.053 ppm at any monitoring site.

Washington no longer performs Nitrogen Dioxide monitoring. 

4.3 Nitrogen Dioxide (NO2, 42602)

AIRS# Site name Est. Type Scale Sampling 

Freq.

Action for 

2007

5300330080 Seattle/Beacon Hill 6/4/79 NAMS Urban Continuous Discontinued

Additional Monitors: None

Recommendations/Proposed Modifications: Ecology has ceased operation of the Beacon Hill NO2 

monitor. Trace level NOy has been established at the Seattle, Beacon Hill site. 

Nitrogen Dioxide (NO2)

Discontinued Nitrogen Dioxide site:

Seattle/Beacon Hill – Discontinued

AIRS # 530330080 Method code: 074

Address: Charleston Street & 15th Avenue South, Seattle LAT/LONG: 047 34' 58" / 122 18' 30"
Ecology Page 18 4/1/2013

4.4 Sulfur Dioxide (SO2, 42401)

National Ambient Air Quality Standards (NAAQS)

 Annual arithmetic average concentration not to exceed 0.03 ppm at any monitoring site.

 24-hour average concentration not to exceed 0.14 ppm at any monitoring site.

 3-hour average concentration not to exceed 0.5 ppm at any monitoring site (secondary standard).

Washington no longer performs Sulfur Dioxide monitoring.

4.4 Sulfur Dioxide (SO2, 42401)

AIRS# Site Name Est. Type Scale Sampling 

freq.

Action for 

2007

530330080 Seattle/Beacon Hill 2/14/00 SPMS Urban Continuous Discontinued

Additional Monitors: None

Recommendations/Proposed Modifications: The Seattle Beacon Hill SO2 monitor has been 

discontinued. Trace level SO2 has been established at the Beacon Hill site. 

Sulfur Dioxide (SO2)

Discontinued Sulfur Dioxide site:

Seattle/Beacon Hill - Discontinued

AIRS # 530330080 Method code: 060

Address: Charleston Street & 15th Avenue S., Seattle LAT/LONG: 047 34' 58" / 122 18' 30"
Ecology Page 19 4/1/2013

4.5 Particulate Matter (PM10, 81102)

National Ambient Air Quality Standard (NAAQS), 1987:

 Twenty-four hour average PM10 concentration not to exceed 150 μg/m3 on more than one 

occasion per year when averaged over three years. 

 Due to a lack of evidence linking health problems to long-term exposure to coarse 

particle pollution, the EPA revoked the annual PM10 standard in 2006 (effective 

December 17, 2006). 

Washington’s Particulate Matter 10 monitoring network consists of eleven sites statewide.

4.5 Particulate Matter 10 (PM10, 81102)

AIRS# Site Name Est. Type Scale Sampling

Type

Action for 

2007

530332004 Kent/Central & James 5/87 SLAMS Neighborhood Continuous only Continue

530330057 Seattle/Duwamish 8/71 SLAMS Neighborhood Continuous only Continue

530530031 Tacoma/Alexander 2/87 SLAMS Neighborhood Continuous only Continue 

530730015 Bellingham/Yew St. 6/88 SLAMS Neighborhood Discontinued Discontinued

530670013 Lacey/Mt. View ES 4/84 SLAMS Neighborhood Discontinued Discontinued

530110013 Vancouver/Moose Lodge 3/90 SPMS Neighborhood Discontinued Discontinued

530050002 Kennewick/Kennewick VSC 10/94 SLAMS Neighborhood Continuous only Disc. FRM

530770009 Yakima/Yakima MH 4/00 SLAMS Neighborhood 1/6 Disc. FRM

530770005 Sunnyside/Harrison MS 8/98 SLAMS Neighborhood Discontinued Disc. Site

530650004 Colville/Colville 11/96 SPMS Neighborhood Continuous only Disc. FRM

530710005 Walla-Walla/Walla-Walla FS 4/89 SPMS Neighborhood Discontinued Disc. FRM

530710006 Burbank/Burbank School 1/03 SPMS Middle Continuous only Disc. FRM

530630016 Spokane/Crown Z 4/72 SLAMS Middle Continuous & 

1/3

Continue both

530630016 Spokane/Crown Z 4/72 SLAMS

Co-lo

Middle Continuous & 

1/6

Continue both

530030004 Clarkston/Clarkston STP 6/93 SLAMS Neighborhood Discontinued Disc. FRM

Additional Monitors: None

Recommendations/Proposed Modifications: Washington State discontinued Particulate Matter 10 FRM 

operation at all of its sites except Yakima and Spokane Crown Z. Operation of equivalent method PM10 

continuous devices network is in place at remaining locations. At Clarkston, the PM10 FRM has been 

replaced with a PM2.5 continuous device and correlation with an FRM is underway. At Sunnyside, the 

PM10 FRM and platform was damaged by high winds in December 2006. It will not be replaced. 
Ecology Page 20 4/1/2013

Kent/Central & James - SLAMS

AIRS # 530332004 Method code: 079

Address: 614 Railroad Avenue N., Kent LAT/LONG: 047 23' 10" / 122 13' 55"

Monitoring objective: Population Exposure MSA: Seattle-Bellevue-Everett, WA

Comments

Kent is a neighborhood scale site for PM10 established in 1987. Located in a mixed 

commercial/residential area near downtown Kent. Kent PM10 is operated as part of the maintenance plan 

for the Puget Sound.

Exceedences

This site has not exceeded the standard for PM10 in the past 3 years.

Seattle/Duwamish - SLAMS

AIRS # 530330057 Method code: 079

Address: 4752 East Marginal Way South, Seattle LAT/LONG: 047 33' 31" / 122 20' 19"

Monitoring objective: Highest Concentration MSA: Seattle-Bellevue-Everett, WA

Comments

Seattle Duwamish is a neighborhood scale site for PM10 established in 1971. Located in a 

commercial/industrial area south of Seattle. Seattle Duwamish PM10 is operated as part of the 

maintenance plan for the Puget Sound.

Exceedences

This site has not exceeded the standard for PM10 in the past 3 years.

Kennewick/Kennewick VSC- SLAMS

AIRS # 530050002 Method code: 079

Address: 5929 West Metaline, Kennewick LAT/LONG: 046 13' 06" / 119 12' 03"

Monitoring objective: Population Exposure MSA: Richland-Kennewick-Pasco, WA

Comments

Kennewick is a neighborhood scale site for PM10 established in 1994. Located in the downtown

Kennewick area, it is representative of Kennewick. Kennewick is subject to windblown dust.

Exceedences

This site has not exceeded the standard for PM10 in the past 3 years.

Yakima/Yakima Mental Health - SLAMS

AIRS # 530770009 Method code: 079/063

Address: 402 South 4th Avenue, Yakima LAT/LONG: 046 35' 42" / 120 30' 44"

Monitoring objective: Population Exposure MSA: Yakima, WA

Comments

Yakima Mental Health is a neighborhood scale site for PM10 established in 2000. Located in a 

commercial/residential area near downtown Yakima. Yakima Mental Health site is representative of the 

Yakima area. Yakima has been past Particulate Matter 10 non-attainment area. 

Exceedences

This site has not exceeded the daily or annual standard for PM10 in the past 3 years.

Colville/Colville - SLAMS

AIRS # 530650004 Method code: 079

Address: 215 South Oak, Colville LAT/LONG: 048 32' 41" / 122 54' 13"

Monitoring objective: Population Exposure MSA: Not in an urban area

Comments

Colville is a neighborhood scale site for PM10 established in 1996. Located in a commercial/residential 

area of Colville. Ecology discontinued the Colville PM10 FRM.

Exceedences

This site has not exceeded the standard for PM10 in the past 3 years.
Ecology Page 21 4/1/2013

Walla-Walla/Walla-Walla Fire Station - SLAMS

AIRS # 530710005 Method code: 063

Address: 200 South 12th, Walla-Walla LAT/LONG: 046 03' 32" / 118 21' 06"

Monitoring objective: Population Exposure MSA: Not in an urban area

Comments

Walla-Walla is a neighborhood scale site for PM10 established in 1989. Located in a 

commercial/residential area of Walla-Walla. Ecology discontinued the Walla-Walla PM10 FRM.

Exceedences

This site has not exceeded the standard for PM10 in the past 3 years.

Burbank/Wallula - SLAMS

AIRS#530710006 Method code: 079/063

Address: 755 Maple Street, Burbank LAT/LONG: 046 12' 00" / 119 00' 30"

Monitoring objective: Population Exposure MSA: Not in an urban area

Comments

Burbank is a middle scale site for PM10 established in 2002. Located in the residential area of Burbank.

The Burbank site is within the previous Wallula PM10 non-attainment area and subject to windblown 

dust. Ecology discontinued the Burbank PM10 FRM.

Exceedences

The Burbank/Wallula site has not exceeded the standard for PM10 in the past 3 years.

Spokane/Crown Zellerbach - SLAMS

AIRS # 530630016 Method code: 079/063

Address: E. 3530 Ferry Street, Spokane LAT/LONG: 047 39' 39" / 117 21' 26"

Monitoring objective: Population Exposure MSA: Spokane, WA

Comments

Spokane Crown Zellerbach is middle scale site for PM10 established in 1972. Located in a highly 

traveled commercial area of Spokane. Spokane Crown Zellerbach site is representative of the Spokane 

area. Spokane is a past Particulate Matter 10 non-attainment area.

Exceedences

This site has not exceeded the standard for PM10 in the past 3 years.

Clarkston/Clarkston STP - SLAMS

AIRS # 530030004 Method code: 063

Address: 13th Street and Port Way, Clarkston LAT/LONG:+46.425571/117.059727

Monitoring objective: Population Exposure MSA: Not in an urban area

Comments

Clarkston is a neighborhood scale site for PM10 established in 1993. Located in a mixed/residential area 

of Clarkston. Clarkston is representative of the Clarkston area. Ecology discontinued the Clarkston 

PM10 FRM. Ecology has established a PM2.5 continuous device at the Clarkston site.

Exceedences

This site has not exceeded the standard for PM10 in the past 3 years.

Discontinued PM10 Sites

Bellingham/Yew Street - Discontinued

AIRS # 530730015

Address: 2420 Yew Street, Bellingham LAT/LONG: 048 45' 46" / 122 26' 25"

Lacey/Mt. View Elementary - Discontinued

AIRS # 530670013

Address: 1900 College Street, Lacey LAT/LONG: 047 01' 43" / 122 49' 15"
Ecology Page 22 4/1/2013

Sunnyside/Harrison Middle School - Discontinued

AIRS # 530770005

Address: 1101 South 16th Street, Sunnyside LAT/LONG: 046.319467” / 119.998524

Vancouver/Moose Lodge - Discontinued

AIRS # 530110013

Address: 8205 East 4th Plain Boulevard, Vancouver LAT/LONG: 045 38' 55" / 122 35' 16"
Ecology Page 23 4/1/2013

4.6 Particulate Matter 2.5 (PM2.5, 88101)

National Ambient Air Quality Standard (NAAQS):

 Twenty-four hour average PM2.5 concentrations not to exceed 35 μg/m3for a three-year average of 

annual 98th percentiles at any population-oriented monitoring site in a monitoring area.

 Three-year annual average PM2.5 concentration not to exceed 15 μg/m3from a single communityoriented monitoring site or the spatial average of eligible community-oriented sites in a 

monitoring area. 

Washington’s statewide PM2.5 monitoring network consists of thirty-seven PM2.5 sites.

 Particulate Matter 2.5 (PM2.5)

AIRS# Site Name Type Sample Type Sampling 

Freq.

Action for 

2007

530272002 Aberdeen/Grays Harbor Co. SPMS Continuous Continuous Continue

530330037 Bellevue/Bellevue SLAMS Continuous Continuous Continue

530730015 Bellingham/Yew Street SLAMS Continuous Continuous Continue

530330023 Enumclaw/Mud Mountain SLAMS Continuous Continuous Continue

530050002 Kennewick/Kennewick VSC SLAMS Continuous Continuous Continue

530332004 Kent/Central & James SPMS Continuous Continuous Continue 

53075005 LaCrosse/LaCrosse SPMS Continuous Continuous Continue

530330024 Lake Forest Park/Lk. For. Pk SPMS Continuous Continuous Continue

530150015 Longview/Olympic School SPMS Continuous Continuous Continue

530610005 Lynnwood/Lynnwood PUD SLAMS Continuous Continuous Continue 

530611007 Marysville/Marysville JHS SLAMS SEQ/Continuous 1/3 Continue

530090009 Shelton/Mason Gen. Hosp. SPMS Continuous Continuous Continue 

530210002 Mesa/Mesa SPMS Continuous Continuous Continue

530251002 Moses Lake/Moses Lake SPMS Continuous Continuous Continue

530570014 Mt. Vernon/Mt. Vernon SPMS Continuous Continuous Continue

530330017 North Bend/North Bend SLAMS Continuous Continuous Continue

530670013 Olympia-Lacey/Mt. View ES SLAMS Continuous Continuous Continue

530090009 Port Angeles/Pt. Angeles MS SPMS Continuous Continuous Continue

530750003 Pullman/Pullman SPMS Continuous Continuous Continue

530531018 Puyallup/Puyallup South Hill SLAMS Continuous Continuous Continue

TBD Woodinville/Woodinville SLAMS Continuous Continuous Continue

530010003 Ritzville/Ritzville SPMS Continuous Continuous Continue

53075006 Rosalia/Rosalia SPMS Continuous Continuous Continue

530330080 Seattle/Beacon Hill NAMS SEQ/Continuous 1/1 Continue

530330057 Seattle/Duwamish SLAMS SEQ/Continuous 1/3 Continue

530330057 Seattle/Duwamish Co-located SEQ 1/6 Continue

530330048 Seattle/Olive Street SPMS Continuous Continuous Continue

530630016 Spokane/Crown Zellerbach SLAMS SEQ/Continuous 1/3 Continue

530630016 Spokane/Crown Zellerbach Co-located SEQ 1/6 Continue

530630047 Spokane/Monroe Street SLAMS Continuous Continuous Continue

530190001 Starbuck/Starbuck SPMS Continuous Continuous Continue

530530031 Tacoma/Alexander Ave. SLAMS Continuous Continuous Continue

530530029 Tacoma/L. Street SLAMS SEQ/Continuous 1/3 Continue

530110013 Vancouver/Moose Lodge SLAMS Continuous 1/1 Continue

530710005 Walla Walla/Walla Walla SPMS Continuous Continuous Continue

530770009 Yakima/Yakima M H SLAMS Continuous 1/3 Continue

Additional Monitors: None
Ecology Page 24 4/1/2013

Recommendations/Modifications: PM2.5 FRM’s at Vancouver and Yakima were re-established as of 

1/1/2007. 

PM2.5 Monitoring Sites

Aberdeen/Grays Harbor County - SLAMS 

AIRS #530272002 Method code: 771

Address: 359 North Division, Aberdeen LAT/LONG: 046 58' 21" / 123 49' 54"

Sampling: Continuous correlated 

Monitoring objective: Population Exposure MSA: Not in an urban area

Comments

The Aberdeen site is neighborhood scale and meets criteria for a SLAMS site. The site represents impacts 

from wood burning and mobile sources. The Aberdeen site geographically represents the Aberdeen/Grays 

Harbor County area. With placement of an FRM, this site is suitable for comparison to the PM2.5 

NAAQS.

Bellevue/Goldfarb - SLAMS 

AIRS #530330037 Method code: 771

Address: 305 Bellevue Way, Bellevue LAT/LONG: 047 36' 47" / 122 12' 06"

Sampling: Continuous correlated

Monitoring objective: Population Exposure MSA: Seattle-Bellevue-Everett, WA

Comments

Explanation: The Bellevue Goldfarb site is neighborhood scale and is representative of mobile source and 

smoke impacts in the Bellevue area. With placement of an FRM, this site is suitable for comparison to 

the PM2.5 NAAQS.

Bellingham/Yew Street - SLAMS 

AIRS #530730015 Method code: 771

Address: 2420 Yew Street, Bellingham LAT/LONG: 048 45' 46" / 122 26' 25"

Sampling: Continuous correlated

Monitoring objective: Population Exposure MSA: Bellingham, WA

Comments

Bellingham/Yew Street site is neighborhood scale. The site represents impacts from wood burning and 

mobile sources. The Bellingham/Yew Street site geographically represents the Bellingham/Whatcom 

County area. With placement of an FRM, this site is suitable for comparison to the PM2.5 NAAQS.

Bremerton/Meadowdale - SLAMS 

AIRS # 530351005 Method code: 771

Address: 7252 Blackbird Dr NE, Bremerton LAT/LONG: 047 37' 51" / 122 38' 28"

Sampling: Continuous correlated 

Monitoring objective: Population Exposure MSA: Bremerton, WA

Comments

Bremerton Meadowdale is a middle/neighborhood scale residential site. Bremerton Meadowdale 

provides air quality information to a population of 280,000 residents. With placement of an FRM, this site 

is suitable for comparison to the PM2.5 NAAQS.
Ecology Page 25 4/1/2013

Darrington - SLAMS 

AIRS # (NEW SITE) 530610020 Method code: 118/771

Address: 1085 Fir St, Darrington LAT/LONG: 048 14' 49" / 121 36' 11"

Sampling: Continuous correlated, in progress

Monitoring objective: Population Exposure MSA: Not in an urban area

Comments

Darrington is neighborhood scale residential site. Darrington’s primary objective is to characterize air 

quality conditions impacting the town of Darrington and the nearby residents. Special Purpose 

Monitoring (SPM) conducted since 2004 has documented numerous exceedances of the 24 hour NAAQS. 

A violation of the current NAAQS appears likely and certain with EPA’s proposed new NAAQS. 

This site is suitable for comparison to the PM2.5 NAAQS.

Enumclaw/Mud Mountain - SLAMS 

AIRS #530330023 Method code: 771

Address: 30525 SE Mud Mountain Rd, Enumclaw LAT/LONG: 047 08' 28" / 121 56' 09"

Sampling: Continuous correlated

Monitoring objective: Population Exposure MSA: Seattle-Bellevue-Everett, WA

Comments

Enumclaw/Mud Mountain is a neighborhood scale site which meets the CFR criteria for a SLAMS 

designation. The Enumclaw/Mud Mountain site is a transport/background site for the Puget Sound. With 

placement of an FRM, this site is suitable for comparison to the PM2.5 NAAQS.

Kennewick/Tri-Cities/VSC - SLAMS 

AIRS #530050002 Method code: 771

Address: 5929 W Metaline, Kennewick LAT/LONG: 046 13' 06" / 119 12' 03"

Sampling: Continuous correlated 

Monitoring objective: Population Exposure MSA: Richland, Kennewick, Pasco, WA

Comments

Kennewick is neighborhood scale and meets SLAMS criteria. The Tri-Cities site represents impacts from 

mobile sources and is geographically representative of the Tri-Cities area. With placement of an FRM, 

this site is suitable for comparison to the PM2.5 NAAQS.

Kent/James & Central - SLAMS 

AIRS #530332004 Method code: 712/713

ADDRESS: 614 N Railroad, Kent LAT/LONG: 047 23' 10" / 122 13' 55"

Sampling: Continuous correlated

Monitoring objective: Population Exposure MSA: Seattle-Bellevue-Everett, WA

Comments

Kent is neighborhood scale site in the South Puget Sound. The Kent site represents impacts from mobile 

sources, light industry, wood smoke and is representative of the Kent Valley area. With placement of an 

FRM, this site is suitable for comparison to the PM2.5 NAAQS.

La Crosse - SLAMS 

AIRS #530750005 Method code: 771

Address: 100 Hill Street, LaCrosse LAT/LONG: 046 48' 55" / 117 52' 26"

Sampling: Continuous correlated 

Monitoring objective: Population Exposure MSA: Not in an urban area

Comments

La Crosse is neighborhood scale small community monitor in Eastern Washington. LaCrosse represents

impacts of smoke and burning on the La Crosse communities as well as providing valuable modeling and 
Ecology Page 26 4/1/2013

mapping information. With placement of an FRM, this site is suitable for comparison to the PM2.5 

NAAQS.

Lake Forest Park - SLAMS 

AIRS #530330024 Method code: 702/704

Address: 17171 Bothell Way NE, Lake Forest Park LAT/LONG: 047 45' 18" / 122 16' 50"

Sampling: Continuous correlated

Monitoring objective: Population Exposure MSA: Seattle-Bellevue-Everett, WA

Comments

Lake Forest Park is neighborhood scale site. Lake Forest Park site represents impacts from wood smoke 

and is representative of the Lake Forest Park general area. With placement of an FRM, this site is 

suitable for comparison to the PM2.5 NAAQS.

Longview - SLAMS 

AIRS #530150015 Method code: 771

Address: 1324 30th Ave, Longview LAT/LONG: 046 08' 22" / 122 57' 43"

Sampling: Continuous correlated

Monitoring objective: Population Exposure MSA: Longview, WA

Comments

Longview is a neighborhood scale site which represents impacts from mobile sources, wood smoke and is 

representative of the Longview/Kelso area. With placement of an FRM, this site is suitable for 

comparison to the PM2.5 NAAQS.

Lynnwood - SLAMS 

AIRS #530610005 Method code: 771

Address: 6120 212th SW, Lynnwood LAT/LONG: 047 48' 23" / 122 19' 00"

Sampling: Continuous correlated

Monitoring objective: Population Exposure MSA: Seattle-Bellevue-Everett, WA

Comments

Lynnwood is neighborhood scale site. The Lynnwood site represents impacts from wood smoke. With 

placement of an FRM, this site is suitable for comparison to the PM2.5 NAAQS.

Marysville - SLAMS 

AIRS #530611007 Method code: 118/712/713

Address: 1605 7th ST, Marysville LAT/LONG: 048 03' 18" / 122 10' 33"

Sampling: 1/3 & continuous correlated

Monitoring objective: Population Exposure MSA: Seattle-Bellevue-Everett, WA

Comments

Marysville is a neighborhood scale site. Marysville represents impacts from wood smoke, mobile sources, 

light industry and is representative of the Marysville/North Snohomish County area. With placement of 

an FRM, this site is suitable for comparison to the PM2.5 NAAQS.

Shelton/Mason County - SLAMS 

AIRS #530450004 Method code: 771

Address: 901 Mt View Dr, Shelton LAT/LONG: 047 13' 33" / 123 06' 53"

Sampling: Continuous correlated 

Monitoring objective: Population Exposure UA: Not in an urban area

Comments

Shelton is a neighborhood scales site established in 2001. Shelton represents impacts of wood smoke. 

With placement of an FRM, this site is suitable for comparison to the PM2.5 NAAQS.
Ecology Page 27 4/1/2013

Mesa - SLAMS 

AIRS #530210002 Method code: 771

Address: 200 Pepiot Way, Mesa LAT/LONG: 046 34' 32" / 119 00' 25"

Sampling: Continuous correlated

Monitoring objective: Population Exposure MSA: Richland, Kennewick, Pasco, WA

Comments

Mesa is a neighborhood scale small community site in Eastern Washington. Mesa represents impacts of 

smoke/burning in the Mesa area. With placement of an FRM, this site is suitable for comparison to the 

PM2.5 NAAQS.

Moses Lake - SLAMS 

AIRS #530251002 Method code: 771

Address: 412 S Balsam St, Moses Lake LAT/LONG: 047 07' 50" / 119 16' 22"

Sampling: Continuous correlated 

Monitoring objective: Population Exposure MSA: Richland, Kennewick, Pasco, WA

Comments

Moses Lake is a neighborhood scale small community site in Eastern Washington. Moses Lake site 

represents impacts of smoke/burning in the Moses Lake area. With placement of an FRM, this site is 

suitable for comparison to the PM2.5 NAAQS.

Mt. Vernon - SLAMS 

AIRS #530570015 Method code: 771

Address: 1600 South Second St, Mount Vernon LAT/LONG: 048 24' 37" / 122 20' 16"

Sampling: Continuous correlated 

Monitoring objective: Population Exposure MSA: Not in an urban area

Comments

Mt. Vernon is a neighborhood scale small community site. Mt Vernon represents impacts from wood 

smoke sources. The continuous monitor represents the Mt. Vernon area. With placement of an FRM, this 

site is suitable for comparison to the PM2.5 NAAQS.

North Bend - SLAMS 

AIRS #530330017 Method code: 771

Address: 42404 SE North Bend Way, North Bend LAT/LONG: 047 29' 23" / 121 46' 24"

Sampling: Continuous correlated 

Monitoring objective: Population Exposure MSA: Seattle-Bellevue-Everett, WA

Comments

North Bend is a neighborhood scale transport/background PM2.5 site for the Puget Sound. North Bend 

represents impacts from wood smoke sources. With placement of an FRM, this site is suitable for 

comparison to the PM2.5 NAAQS.

Olympia-Lacey/Mt. View Elementary School - SLAMS 

AIRS #530670013 Method code: 771

Address: 1900 College St SE, Lacey LAT/LONG: 047 01' 43" / 122 49' 15"

Sampling: Continuous correlated

Monitoring objective: Population Exposure MSA: Olympia, WA

Comments

Olympia-Lacey is a neighborhood scale site. The Olympia-Lacey site represents impacts from wood 

smoke. Olympia-Lacey is representative of the Olympia/Thurston County area. With placement of an 

FRM, this site is suitable for comparison to the PM2.5 NAAQS.
Ecology Page 28 4/1/2013

Port Angeles/Stevens Middle School - SLAMS 

AIRS #530090009 Method code: 771

Address: 1139 W 14th St., Port Angles LAT/LONG: 048 06' 59" / 123 27' 52"

Sampling: Continuous correlated 

Monitoring objective: Population Exposure UA: Not in an urban area

Comments

Port Angeles is a neighborhood scale site adjacent to Olympic National Park, a Class 1 Area. Port 

Angeles represents impacts of smoke related activities. With placement of an FRM, this site is suitable 

for comparison to the PM2.5 NAAQS.

Port Townsend/Blue Heron School - SLAMS 

AIRS #530310003 Method code: 771

Address: 3939 San Juan Avenue, Port Townsend LAT/LONG: 048 07' 45" / 122 46' 46"

Sampling: Continuous correlated

Monitoring objective: Population Exposure MSA:

Comments

Port Townsend is a neighborhood scale site and meets the criteria for a SLAMS site. Port Townsend 

represents impacts from wood burning. Port Townsend represents the Port Townsend area. With 

placement of an FRM, this site is suitable for comparison to the PM2.5 NAAQS.

Pullman - SLAMS 

AIRS #530750003 Method code: 771

Address: 240 SE Dexter, Pullman LAT/LONG: 046 43' 28" / 117 10' 46"

Sampling: Continuous correlated

Monitoring objective: Population Exposure UA: Not in an urban area

Comments

Pullman is a neighborhood scale site is in Eastern Washington. Pullman represents impacts from 

smoke/burning activities. With placement of an FRM, this site is suitable for comparison to the PM2.5 

NAAQS.

Puyallup/South Hill - SLAMS 

AIRS #530531018 Method code: 771

Address: 9616 128th St E, Puyallup LAT/LONG: 047 08' 24" / 122 18' 01"

Sampling: Continuous correlated 

Monitoring objective: Population Exposure MSA: Seattle-Bellevue-Everett, WA

Comments

Puyallup is a neighborhood scale site. Puyallup represents wood smoke impacts in the Puyallup/South 

Hill area. With placement of an FRM, this site is suitable for comparison to the PM2.5 NAAQS.

Woodinville (Formerly Redmond/Redmond City Hall) - SLAMS 

AIRS #TBD Method code: 771

Address: TBD LAT/LONG: TBD

Sampling: Continuous correlated 

Monitoring objective: Population Exposure MSA: Seattle-Bellevue-Everett, WA

Comments

Woodinville site will be neighborhood scale. Woodinville represents wood smoke impacts in the 

Woodinville/Redmond area. It is unclear at this time if placement of an FRM, this site is would be 

suitable for comparison to the PM2.5 NAAQS.
Ecology Page 29 4/1/2013

Ritzville - SLAMS 

AIRS #530010003 Method code: 771

Address: 109 W Alder, Ritzville LAT/LONG: 047 07' 43" / 118 22' 55"

Sampling: Continuous correlated 

Monitoring objective: Population Exposure UA: Not in an urban area

Comments

Ritzville is a neighborhood scale small community located in Eastern Washington. Ritzville identifies

impacts from smoke/burning activities. With placement of an FRM, this site is suitable for comparison to 

the PM2.5 NAAQS.

Rosalia - SLAMS 

AIRS #530750006 Method code: 771

Address: 906 S Josephine Avenue, Rosalia LAT/LONG: 047 13' 52" / 117 22' 08"

Sampling: Continuous correlated 

Monitoring objective: Population Exposure UA: Not in an urban area

Comments

Rosalia is a neighborhood scale small community located in Eastern Washington. Ritzville represents

impacts of smoke/ burning in the Rosalia area. With placement of an FRM, this site is suitable for 

comparison to the PM2.5 NAAQS.

Seattle/Beacon Hill - NCore

AIRS #530330080 Method code: 118/771/702/704

Address: 4103 Beacon Avenue S., Seattle LAT/LONG: 047 34' 58" / 122 18' 30"

Sampling: 1/1 & correlated continuous

Monitoring objective: Population Exposure MSA: Seattle-Bellevue-Everett, WA

Comments

Seattle Beacon Hill site is an urban scale National Air Monitoring Station (NAMS) for carbon monoxide

and ozone. Seattle Beacon Hill also measures chemical speciated particulate matter, volatile organic air 

toxics, carbonyls and semi-volatile (PAH) toxics. Data from Seattle Beacon Hill supports the Particulate 

Research Center activities. This site is suitable for comparison to the PM2.5 NAAQS.

Seattle/Duwamish - SLAMS 

AIRS #530330057 Method code: 118/771

Address: 4401 E Marginal Way S., Seattle LAT/LONG: 047 33' 31" / 122 20' 19"

Sampling: 1/3 & correlated continuous

Monitoring objective: Population Exposure MSA: Seattle-Bellevue-Everett, WA

Comments

Seattle Duwamish is a neighborhood scale located in the Duwamish River Valley. The site represents 

impacts from mobile and industrial sources. This site is suitable for comparison to the PM2.5 NAAQS.

Seattle/Olive Street - SLAMS 

AIRS #530330048 Method code: 771

Address: 1624 Boren Avenue, Seattle LAT/LONG: 047 36' 55" / 122 19' 48"

Sampling: Continuous correlated

Monitoring objective: Population Exposure MSA: Seattle-Bellevue-Everett, WA

Comments

Seattle Olive Street was established in 2002 as a micro scale PM site adjacent to Interstate 5 designed to 

measure the effects of mobile source diesel emissions. This site is not suitable for comparison to the 

PM2.5 NAAQS.
Ecology Page 30 4/1/2013

Spokane/Crown Z - SLAMS 

AIRS #530630016 Method code: 118/702/704

Address: E 3530 Ferry, Spokane LAT/LONG: 047 39' 39" / 117 21' 26"

Sampling: 1/3 & continuous

Monitoring objective: Population Exposure MSA: Spokane, WA

Comments

Spokane/Crown Z is a neighborhood scale site. Spokane/Crown Z site represents impacts from wood 

smoke and light industrial sources and is representative of the Spokane area. This site is suitable for 

comparison to the PM2.5 NAAQS.

Spokane/Monroe Street - SLAMS 

AIRS #530630047 Method code: 771

Address: N 4601 Monroe St., Spokane LAT/LONG: 047 42' 03" / 117 25' 30"

Sampling: Continuous correlated

Monitoring objective: Population Exposure MSA: Spokane, WA

Comments

Spokane/Monroe Street is a neighborhood scale site and meets CFR criteria for SLAMS designation. 

Spokane/Monroe Street represents impacts from wood smoke and is representative of the Spokane area. 

With placement of an FRM, this site is suitable for comparison to the PM2.5 NAAQS.

Starbuck (Anticipated to be moved) - SLAMS 

AIRS # 530130001 Method code: 771

Address: 6th & Tucannon Road, Starbuck LAT/LONG: 046 31' 05" / 118 07' 36"

Sampling: Continuous correlated 

Monitoring objective: Population Exposure UA: Not in an urban area

Comments

Starbuck is a neighborhood scale small community site located in Eastern Washington. Starbuck site 

represents impacts of smoke/burning in the Starbuck area. With placement of an FRM, this site is 

suitable for comparison to the PM2.5 NAAQS.

Tacoma/Alexander - SLAMS 

AIRS #530530031 Method code: 771

Address: 2301 Alexander Avenue, Tacoma LAT/LONG: 047 15' 56" / 122 23' 09"

Sampling: Continuous correlated 

Monitoring objective: Population Exposure MSA: Seattle-Bellevue-Everett, WA

Comments

Tacoma/Alexander is a neighborhood scale site. Tacoma Alexander represents impacts from wood smoke 

and select industrial point sources on the Tacoma Tide flats. Tacoma Alexander represents the NE 

Tacoma/Fife area. With placement of an FRM, this site is suitable for comparison to the PM2.5 NAAQS.

Tacoma/L Street - SLAMS 

AIRS #530530029 Method code: 118/712/713

Address: 7802 South L St., Tacoma LAT/LONG: 047 11' 11" / 122 27' 06"

Sampling: 1/3 & continuous correlated

Monitoring objective: Population Exposure MSA: Seattle-Bellevue-Everett, WA

Comments

Tacoma/L Street is a neighborhood scale site. Tacoma L Street represents impacts from wood smoke

sources. Tacoma L Street is representative of the greater Tacoma area. This site is suitable for 

comparison to the PM2.5 NAAQS.
Ecology Page 31 4/1/2013

Vancouver/Moose Lodge - SLAMS 

AIRS #530110013 Method code: 118/771

Address: 8205 E 4th Plain Boulevard, Vancouver LAT/LONG: 045 38' 55" / 122 35' 16"

Sampling: Continuous correlated

Monitoring objective: Population Exposure MSA: Portland-Vancouver, OR-WA

Comments

Vancouver/Moose Lodge is a neighborhood scale site. Vancouver/Moose Lodge site represents impacts 

from wood smoke sources and is representative of the greater Vancouver area. This site is suitable for 

comparison to the PM2.5 NAAQS.

Walla Walla/Ecology - SLAMS 

AIRS #530710005 Method code: 771

Address: 200 S 12

th, Walla-Walla LAT/LONG: 046 03' 32" / 118 21' 06"

Sampling: Continuous correlated

Monitoring objective: Population Exposure UA: Not in an urban area

Comments

Walla Walla is a neighborhood scale small community site is located in Eastern Washington. Walla Walla 

represents impacts from smoke/burning activities in the Walla Walla area. With placement of an FRM, 

this site is suitable for comparison to the PM2.5 NAAQS.

Yakima/Comprehensive Mental Health/YRCAA - SLAMS 

AIRS #530770009 Method code: 118/771

Address: 402 South 4th Avenue, Yakima LAT/LONG: 046 35' 42" / 120 30' 44"

Sampling: Continuous correlated 

Monitoring objective: Population Exposure MSA: Yakima, WA

Comments

Yakima site is a neighborhood scale site. Yakima represents impacts from smoke/burning sources in the 

greater Yakima area. This site is suitable for comparison to the PM2.5 NAAQS.
Ecology Page 32 4/1/2013

4.7 PM2.5 - Other

Wenatchee/Columbia School - SLAMS

AIRS # 530070006 Method code: 702/704

Address: 600 Alaska Street, Wenatchee LAT/LONG: 047 25' 06" / 120 19' 14"

Sampling: Continuous

Monitoring objective: Population Exposure UA: Not in an urban area

Comments

Wenatchee Columbia School is a neighborhood scale site. This site was established in 1994 as a PM10 

site. Located in a residential area of Wenatchee. Wenatchee site is representative of impacts from wood 

smoke sources. With placement of an FRM, this site is suitable for comparison to the PM2.5 NAAQS.

Ellensburg/Ellensburg - SLAMS

AIRS # 530370002 Method code: 702/704

Address: 201 North Ruby Street, Ellensburg LAT/LONG: 046 59' 37" / 120 32' 42"

Sampling: Continuous

Monitoring objective: Population Exposure MSA: Not in an urban area

Comments

Ellensburg is a neighborhood scale site. Ellensburg was established in 1995 as a PM10 site. It is located 

in a residential area of Ellensburg. The Ellensburg site is representative of impacts from wood smoke

sources. With placement of an FRM, this site is suitable for comparison to the PM2.5 NAAQS.

Clarkston/Clarkston STP - SLAMS

AIRS # 530030004 Method code: 771

Address: 13th Street and Port Way, Clarkston LAT/LONG:+46.425571/117.059727

Sampling: Continuous

Monitoring objective: Population Exposure UA: Not in an urban area

Comments

Clarkston is a neighborhood scale site. Clarkston was established in 1993 as a PM10 site. Located in a 

mixed/residential area of Clarkston. With placement of an FRM, this site is suitable for comparison to the 

PM2.5 NAAQS.

Note:

Ecology discontinued the Clarkston PM10 FRM. A PM2.5 continuous device has been installed at 

the Clarkston site and a correlation with an FRM is being established.
Ecology Page 33 4/1/2013

4.8 Trace Gas Monitoring

NCore – Precursor Gas & Multi-Pollutant Monitoring – From an emission source perspective, 

multiple pollutants and their precursors are released simultaneously (e.g., a combustion plume with 

nitrogen, carbon, hydrocarbon, mercury, sulfur gases, and particulate matter). Meteorological processes 

that shape pollutant movement, atmospheric transformations, and removal act on all pollutants. 

Numerous chemical and physical interactions underlie the dynamics of particle and ozone formation and 

the adherence of air toxics on surfaces of particles. 

Overwhelming programmatic and scientific interactions across pollutants have demanded a movement 

toward integrated air quality management. Collocated air monitoring benefits health assessments and

emissions strategy development. Health studies with access to multi-pollutant data will be better 

positioned to identify confounding effects of different pollutants, particularly when concentration, 

composition, and population types are included. Air quality models and source attribution methods used 

for strategy development also benefit from the multi-pollutant approach. Modelers will be able to 

perform more robust evaluations by checking performance on several variables to ensure the model 

produces results for correct reasons and not through compensating errors. As emission sources are 

characterized by a multiplicity of pollutant releases, related source apportionment models yield more 

conclusive results from use of multi-pollutant measurements. Multi-pollutant measurements also 

streamline monitoring operations and offer increased diagnostic capabilities to improve instrument 

performance. 

The multi-pollutant monitoring provided for these needs by starting to fill the measurement gaps that have 

accumulated over the years. The objective of this strategy is to provide for the following important needs;

 Improved data flow and timely reporting to the public

 Future NAAQS compliance determinations and revisions

 Support for development of emissions strategies

 Assess effectiveness of air pollution control programs

 Data for scientific and health-based studies.

Seattle/Beacon Hill/Ecology/NWRO 

AIRS #530330080

Address: 4103 Beacon Avenue S., Seattle LAT/LONG: 047 34' 58" / 122 18' 30"

Monitoring objective: Special Studies MSA: Seattle-Bellevue-Everett, WA

Comments

Seattle Beacon Hill is an urban scale for carbon monoxide and ozone. Seattle Beacon Hill also measures 

chemical speciated particulate matter, volatile organic air toxics, carbonyls and semi-volatile (PAH) 

toxics. In addition, data from this site supports the Particulate Research Center activities. 

Carbon Monoxide

Precursor or trace level Carbon monoxide is in operation at the Beacon Hill site. 

Sulfur Dioxide

Precursor or trace level sulfur dioxide is in operation at the Beacon Hill site. 

Reactive Nitrogen Compounds

Precursor or trace level NOy is in operation at the Beacon Hill site. 
Ecology Page 34 4/1/2013

4.9 Toxics/Speciation Monitoring

Toxics

Collocated National Air Toxics Trend Site (NATTS) - In addition to the STN and NCore Precursor 

Gas Monitoring Programs currently underway, Beacon Hill is also a designated National Air Toxics 

Trend Site (NATTS). The primary objectives of Washington’s National Air Toxics Trends Site 

Monitoring Program include but are not limited to:

 Provide long-term air toxic monitoring data in order to establish and track trends.

 Evaluate the air toxic program’s progress by characterizing air toxics concentrations, and 

determining their spatial and temporal differences between cities and regions over time.

 Provide representative air toxic data to support exposure assessments (i.e. determine health risks).

 Determine where air toxics emissions come from (source apportionment).

 Provide air toxic data for evaluating modeling results that are used for exposure assessments.

 Assess the effectiveness of the air toxic program’s emission reduction and control strategies.

Seattle/Beacon Hill

AIRS #530330080 Method code: 593/560/574

Address: 4103 Beacon Avenue S., Seattle LAT/LONG: 047 34' 58" / 122 18' 30"

Monitoring objective: Special Studies MSA: Seattle-Bellevue-Everett, WA

Comments

Seattle Beacon Hill is a designated National Air Toxics Trends Site (NATTS). Seattle Beacon Hill 

monitoring station was nominated by the National Air Toxics Committee and chosen by EPA 

headquarters to represent urban scale air toxics in the Pacific Northwest. As part of NATTS designation 

Seattle Beacon Hill was selected to receive continuing funding for long-term air toxics monitoring. 

Seattle Beacon Hill is the only designated urban scale NATTS located in the Pacific Northwest.
Ecology Page 35 4/1/2013

Speciation

National Speciation Trends Network (STN) - The PM2.5 Chemical Speciation Program continues to 

have a significant role in the new Monitoring Strategy. Washington’s STN site is located at Jefferson 

Park on Beacon Hill in Seattle. The primary goal of the PM2.5 speciation monitoring is to:

 Provide long-term data in order to establish and track tends.

 Determine the spatial and temporal differences of PM2.5 composition between cities and regions 

over time.

 Provide representative PM2.5 speciation data to support exposure assessments (i.e. determine 

health risks).

 Determine where PM2.5 emissions come from (source apportionment).

 Evaluate modeling results that are used for exposure assessments.

 Assess the effectiveness of the program’s emission reduction and control strategies.

Seattle/Beacon Hill

AIRS #530330080 Method code:

Address: 4103 Beacon Avenue S., Seattle LAT/LONG: 047 34' 58" / 122 18' 30"

Monitoring objective: Special Studies

MSA: Seattle-Bellevue-Everett, WA

Supplemental Speciation Sites - In addition to the Beacon Hill STN site, the State operates four 

supplemental speciation sites. These supplemental sites are located at:

Spokane/Crown Z/SCAPCA

AIRS #530630016 Method code:

Address: E 3530 Ferry, Spokane LAT/LONG: 047 39' 39" / 117 21' 26"

Monitoring objective: Special Studies MSA: Spokane, WA

Seattle/Duwamish/PSCAA 

AIRS #530330057 Method code:

Address: 4401 E Marginal Way S., Seattle LAT/LONG: 047 33' 31" / 122 20' 19"

Monitoring objective: Special Studies MSA: Seattle-Bellevue-Everett, WA

Seattle/Olive Street/PSCAA *

AIRS #530330048 Method code:

Address: 1624 Boren Avenue, Seattle LAT/LONG: 047 36' 55" / 122 19' 48"

Monitoring objective: Special Studies MSA: Seattle-Bellevue-Everett, WA

Tacoma/L Street/PSCAA *

AIRS #530530029 Method code:

Address: 7802 South L St., Tacoma LAT/LONG: 047 11' 11" / 122 27' 06"

Monitoring objective: Special Studies MSA: Seattle-Bellevue-Everett, WA

* Sites marked with an * are scheduled for relocation to Vancouver and Yakima.
Ecology Page 36 4/1/2013

5.0 References

1. Code of Federal Regulations, Title 40, Part 58, Appendix A,B,C,D,E, U.S. Government Printing 

Office, 1999.

2. Code of Federal Regulations, Title 40, Part 50, U.S. Government Printing Office, 1999.

3. Code of Federal Regulations, Title 40, Part 53, U.S. Government Printing Office, 1999.

4. Code of Federal Regulations, Title 40, Part 58, U.S. Government Printing Office, 1999.

5. U.S. EPA, Revised Requirements for Designation of Reference and Equivalent Methods for PM2.5

and Ambient Air Quality Surveillance for Particulate Matter -Final Rule. 40 CFR Parts 53 and 

58. Federal Register, 62(138):38763-38853. July 18, 1997.

6. Guidance for Network Design and Optimum Site Exposure for PM2.5 and PM10, J.G. Watson, et. 

Al., U.S. EPA/OAQPS, December 15, 1997.

7. SLAMS/NAMS/PAMS Network Review Guidance, EPA-454/R-98-003, March 1998.

8. Ambient Monitoring Guidelines for Prevention of Significant Deterioration (PSD), EPA-450/4-

87-007, May 1987.

9. Guideline on Ozone Monitoring Site Selection, EPA-454/R-98-002, August 1998.