2015 Ambient Air Monitoring 

Network Report 

 

 

 

 

 

 

 

 

 

May 2015

Publication no. 15-02-001
Publication and Contact Information

This report is available on Ecology’s website at

https://fortress.wa.gov/ecy/publications/SummaryPages/1402009.html

For more information, contact:

Air Quality Program

P.O. Box 47600

Olympia, WA 98504-7600

(360) 407-6800

Washington State Department of Ecology - www.ecy.wa.gov

o Headquarters, Olympia (360) 407-6000

o Northwest Regional Office, Bellevue (425) 649-7000

o Southwest Regional Office, Olympia (360) 407-6300

o Central Regional Office, Yakima (509) 575-2490

o Eastern Regional Office, Spokane (509) 329-3400

To request ADA accommodation, call (360) 407-6800, 711 (relay service), or 877-833-6341 

(TTY).
2015 Ambient Air Monitoring

Network Report

Prepared by

Michael Ragan

Statewide Ambient Air Monitoring Coordinator

Air Quality Program

Washington State Department of Ecology

Olympia, Washington
This page is purposely left blank
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Table of Contents

 Page

Executive Summary..................................................................................................v

Purpose of the report......................................................................................................v

Carbon Monoxide, (CO, 42101)............................................................................v

Ozone (O3, 44201).................................................................................................v

Nitrogen Dioxide (NO2, 42600, 42601, 42612) ....................................................v

Sulfur Dioxide (SO2, 42401)............................................................................... vi

Particulate Matter 10 (PM10, 81102) ................................................................... vi

Particulate Matter 2.5 (PM2.5, 88101, 88502)..................................................... vii

Meteorological Monitoring (Met. 61101, 61102, 62101) .................................. vii

Lead (Pb 14129) ................................................................................................ viii

Trace Gas Monitoring........................................................................................ viii

NCore ................................................................................................................ viii

Other – Contracted Sites Tribal/EPA ................................................................ viii

Other – Contracted Sites USFS ......................................................................... viii

Other – Contracted Local Clean Air Agencies.................................................. viii

Background information....................................................................................... ix

Monitoring network requirements ............................................................................... ix

Using monitoring data.................................................................................................. ix

Introduction.................................................................................................................10

Regulatory Requirements and Other Data Needs..............................................................11

Appendix D Requirements...........................................................................................11

Monitoring Objectives and Spatial Scales...........................................................11

Number of State and Local Air Monitoring Stations (SLAMS) .........................12

Appendix E Requirements...........................................................................................13

Other Ambient Air Monitoring Data Needs........................................................13

Network Review Procedure.................................................................................14

Network Review Team and Preparation..............................................................14

Network Modifications........................................................................................14

Determining Compliance with Appendix D and Special Monitoring Requirements.....14

Number and Location of Monitors......................................................................14

Determining Compliance with Appendix E Requirements.................................15

Other – Contracted Local Clean Air Agencies....................................................94

Other – Contracted Sites Tribal/EPA ................................................................120

Lead (Pb 14129) ................................................................................................129

Trace Gas Monitoring........................................................................................131

Toxics.........................................................................................................................134

Speciation...................................................................................................................136

APPENDIX A. EPA APPENDIX D FORMS ................................................................141

APPENDIX B. EPA APPENDIX E FORMS.................................................................149

References........................................................................................................................156
ii

List of Tables

Table 1. Relationship Between Monitoring Objectives and Scale of Representativeness .......... 11

Table 2. Summary of Spatial Scales for SLAMS ........................................................................ 12

Table 3. Summary of Probe and Monitoring Path Siting Criteria ............................................... 13

Table 4. Carbon Monoxide, Parameter Code 42101.................................................................... 16

Table 5. Ozone, Parameter Code 44201 ...................................................................................... 21

Table 6. Nitrogen Dioxide Parameter Codes 42600 NOy, 42601 NO, 42612NOy-NO.............. 35

Table 7. Sulfur Dioxide Parameter Code 42401.......................................................................... 40

Table 8. Particulate Matter 10, Parameter Code 81102............................................................... 43

Table 9. Particulate Matter 2.5, Parameter Codes 88101, 88502 ................................................ 49

Table 10. Other - Contracted Local Clean Air Agencies............................................................. 94

Table 11. Met Monitoring, Parameter Codes 61101, 61102, 62101............................................ 98

Table 12. Other Contracted Sites USFS .................................................................................... 114

Table 13. Other - Contracted Sites Tribal/EPA ......................................................................... 120

Table 14. Pb Lead, Parameter Code 85129................................................................................ 129

Table 15. Trace Gas Monitoring CO, SO2, NOy........................................................................ 131

Table 16. NCore Parameters Seattle Beacon Hill...................................................................... 132

Table 17. NCore Parameters Cheeka Peak ................................................................................ 133

Table 18. Toxics......................................................................................................................... 134

Table 19. Speciation................................................................................................................... 136

List of Figures

Figure 1. Map of Washington State monitoring (all sites)........................................................... 15

Figure 2. Map of WA State CO sites........................................................................................... 16

Figure 3. Map of WA State ozone sites....................................................................................... 22

Figure 4. Map of WA State NO2 sites.......................................................................................... 35

Figure 5. Map of WA State SO2 sites.......................................................................................... 40

Figure 6. Map of WA State PM10 sites........................................................................................ 44

Figure 7. Map of WA State PM2.5 sites........................................................................................ 51
iii

Acronyms

AQS EPA’s Air Quality System database

BAM Beta Attenuation Monitor

BCAA Benton County Clean Air Agency

CBSA Core Based Statistical Area

CFR Code of Federal Regulations

CO carbon monoxide

CSA Combined Statistical Area

CSN Chemical Speciation Network

DV Design Value

Ecology Washington State Department of Ecology

EPA United States Environmental Protection Agency

FDMS Filter Dynamic Measurement System

FEM Federal Equivalent Method

FID Flame Ionization Detector

FRM Federal Reference Method

IMPROVE Interagency Monitoring of Protected Visual Environments

MSA Metropolitan Statistical Area

NAAQS National Ambient Air Quality Standard

NATTS National Air Toxics Trends Station

NCore National Core multi-pollutant station

NO nitric oxide

NO2 nitrogen dioxide

NOX oxides of nitrogen

NOy Total Reactive Oxides of Nitrogen 

NWCAA Northwest Clean Air Agency

O3 ozone

ORCAA Olympic Region Clean Air Agency

Pb lead

PM2.5 particulate matter equal to or less than 2.5 microns in diameter

PM10 particulate matter equal to or less than 10 microns in diameter

PM10-2.5 particulate matter less than 10 microns in diameter and greater than 2.5 microns

PPB parts per billion

PPM parts per million

PQAO Primary Quality Assurance Organization

PSCAA Puget Sound Clean Air Agency

PSD Prevention of Significant Deterioration

QA quality assurance

QA quality control

SLAMS State or Local Air Monitoring Station

SO2 sulfur dioxide

SPMS Special Purpose Monitoring Site

SRCAA Spokane Region Clean Air Agency

SWCAA Southwest Clean Air Agency
iv

Acronyms Continued

STN Speciation Trends Network

TEOM Tapered Element Oscillating Microbalance 

TSP Total Suspended Particulate

μg/m3 micrograms per cubic meter

VOC volatile organic compound

YRCAA Yakima Region Clean Air Agency
v

Executive Summary

Purpose of the report

Ecology reviews its ambient air quality monitoring network each year to ensure that it collects 

adequate, representative, and useful air quality data on which to base policy decisions. This 

report summarizes the results of the 2014 review. These results include:

 Identify modifications to Ecology’s ambient air monitoring network since the 2014

annual network report;

 Identify proposed modifications to the network for the upcoming year;

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

Carbon Monoxide, (CO, 42101)

Recommendations/Modifications: Ecology and its monitoring partners have divested of

traditional CO monitoring at all sites except Spokane 3rd and Washington.

Additional Monitors: None.

Ozone (O3, 44201)

Recommendations/Modifications: Modeling indicated an ozone hot spot in Kennewick. A 

subsequent study during ozone season during 2014 confirmed higher values. Ecology will be 

installing ozone equipment at Kennewick (BCAA Offices) for ozone season in 2015.

Additional Monitors: None.

Nitrogen Dioxide (NO2, 42600, 42601, 42612)

Recommendations/Modifications: Ecology monitors for the reactive nitrogen species (NOy) at

NCore Seattle Beacon Hill which includes NO2. Olympic Region Clean Air Agency (ORCAA) 

monitors for the reactive NOy at Rural NCore Cheeka Peak. It is assumed most, if not all, the 

NOy measured at Beacon Hill and Cheeka Peak is composed of NO2.

Additional Monitors: A second near-road NO2 monitor is being installed in Tacoma. Operation 

is anticipated to begin January 1, 2016.
vi

Sulfur Dioxide (SO2, 42401)

Recommendations/Proposed Modifications: None.

Additional Monitors: None.

Particulate Matter 10 (PM10, 81102)

Recommendations/Proposed Modifications: None.

Additional Monitors: None.

Thurston County Maintenance Area (Lacey PM2.5)

The Lacey-College Street PM2.5 nephelometer site (530670013) is being used to assure continued

compliance with the PM10 NAAQS as well as to confirm the Thurston County Maintenance Area 

(TCMA) continues to meet the qualification criteria of EPA’s Limited Maintenance Plan (LMP) 

approach.

A 5-year NPM10 design value below 98μg/m3 demonstrates the TCMA continues to qualify for 

the LMP approach. The Lacey-College Street nephelometer site’s (53670013) 5-year PM10

design value estimate for 2010–2014 was 43 μg/m3. The PM10 design value estimate for 2012–

2014 was 45 μg/m3. The current design value estimates demonstrate the TCMA complies with 

the PM10 standard and continues to meet EPA’s LMP qualification criteria.

Kent, Seattle, and Tacoma PM10 Maintenance Areas

Three- and five-year design values for the Kent, Seattle, and Tacoma PM10 Maintenance Areas 

were calculated using the table look up method and the statistical fit method outlined in the LMP 

guidance document.

A 3-year PM10 design value of 150 μg/m3or below demonstrates continued compliance with the 

PM10 NAAQS. A 5-year design value below 98 μg/m3is required to qualify for the LMP 

approach. Design values calculated using the table look up method fall within the range of 

uncertainty of the statistical fit method. Because they are the most conservative values, only the 

statistical fit values are presented here.

The PM2.5 FEM TEOM at James Street and Central Avenue (530332004) is used to assure 

continued compliance with the PM10 NAAQS and to confirm continued eligibility for the LMP 

approach. The 2014 5-year design value is 49±6 μg/m3and the 3-year design value is 52±6

μg/m3.

The PM2.5 FEM TEOM at Seattle-Duwamish (530330057) is used to assure continued 

compliance with the PM10 NAAQS and to confirm continued eligibility for the LMP approach. 

The 2014 5-year design value is 58±6 μg/m3and the 3-year design value is 61±6 μg/m3. Note: 

In 2014 Duwamish did not have a complete year of data due to site relocation. The design 
vii

values for Duwamish were calculated using the guidelines for incomplete data outlined in 

Appendix B, page B-1, of the PM10 SIP Development Guide.

The PM2.5 nephelometer at Tacoma-Alexander Avenue (530530031) is used to assure continued 

compliance with the PM10 NAAQS and to confirm continued eligibility for the LMP approach. 

The 2014 5-year design value is 60±13 μg/m3and the 3-year design value is 65±13 μg/m3.

Spokane County Maintenance Area (Spokane PM10)

The Spokane County Maintenance area design value is based on FRM and FEM 24-hour PM10

monitoring data from the Augusta Avenue site (530630021) in Spokane, Washington. The LMP 

Guidance directs the design value be based on the most recent five years’ of data. The most

recent five years’ of data is from 2010–2014 using a combination of FRM and FEM data from 

the Augusta site.

A 5-year PM10 design value below 98 μg/m3demonstrates the Spokane County Maintenance 

Area continues to qualify for the LMP approach. The 5-year PM10 design value estimate for

2010–2014 was 80 μg/m3. For the 3-year compliance with the PM10 NAAQS, the form of the

standard is the number of 24-hour exceedances of 150 μg/m3, averaged over three years. The 

2014 PM10 design value for Augusta Avenue (530630021) is 0.4. This design value is in 

attainment with the standard, which is not to exceed one. The Spokane County Maintenance 

Area complies with the PM10 NAAQS and continues to meet EPA’s LMP qualification criteria.

Particulate Matter 2.5 (PM2.5, 88101, 88502)

Additional Monitors: None.

Recommendations/Modifications: Port Angeles relocation was approved in 2014 and taking 

place in 2015. ORCAA is planning relocation of the Aberdeen site in 2015 for safety reasons.

Notes: Nephelometers are not EPA equivalent method compliance instruments and design 

values are estimates.

Ecology uses the Washington Air Quality Advisory (WAQA) for reporting PM2.5 to inform and 

protect citizens of Washington. WAQA reporting is more protective of human health. Ecology’s 

goal is to keep 24-hour concentrations below 20μg/m.

Certain monitors in areas of Washington are not intended to be solely NAAQS based. Such

monitors are used for protection of human health by issuing burn bans when needed during home

heating season, making daily decisions for agricultural burning and health information-reporting

PM2.5-like values.

Meteorological Monitoring (Met. 61101, 61102, 62101)

Additional Monitors: The addition of meteorological monitoring is planned for Yakima during 

2015 pending landlord approval.
viii

Recommendations/Modifications: None.

Lead (Pb 14129)

Additional Monitors: None.

Recommendations/Modifications: None.

Trace Gas Monitoring

Additional Monitors: None.

Recommendations/Modifications: None.

NCore

Additional Monitors: None.

Recommendations/Modifications: None.

Other – Contracted Sites Tribal/EPA

Additional Monitors: None.

Recommendations/Modifications: *Monitoring was suspended at Taholah fall 2011.

EPA continues to work with the Quinault Nation to determine the future of monitoring there.

Ecology continues to work with the Quinault Tribe to site and install a monitor at Taholah.

Ecology is in discussions with EPA regarding tribal sites with low monitored values and can be

represented by other nearby monitors.

Other – Contracted Sites USFS

Additional Monitors: None.

Recommendations/Modifications: The Chelan and Naches sites were unexpectedly 

discontinued in May of 2015 by the USFS. Their final disposition is unknown at this time.

Other – Contracted Local Clean Air Agencies

Additional Monitors: None.

Recommendations/Modifications: None.

Note: Ecology provides technical support for Anacortes, Cheeka Peak, and Spokane Augusta

ozone. 
ix

Background information

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 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 to Appendices A and C in part through periodic systems and 

performance audits (per Section 2.4 of Appendix A). States conform to 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.

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.

 Analyze pollution episodes.

 Assist with permitting work.
10

Introduction

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

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

systems in their SIPs. The air quality surveillance system consists of a network of designated SLAMS. 

These stations measure ambient concentrations of those air pollutants for which standards exist in 40 

CFR Parts 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 compliance with Appendices A and C in part through periodic systems and performance 

audits (per Section 2.4 of Appendix A). States comply 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 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 on which to base policy 

decisions. The ambient air quality data from Ecology’s network is used for a variety of purposes, 

including:

 Determining compliance with the 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.

 Analyze pollution episodes.

 Assist with permitting work.

EPA Region 10 Approved Network Changes in 2014

Seattle Duwamish: Site relocation

Port Angeles: Site relocation

Puyallup 66th: Site termination

Seattle Olive Street: PM2.5 relocation to Seattle 10th and Weller/site termination

Vancouver Plaza: Site relocation

Relocation/termination details can be found in the 2014 Washington Annual Network Plan
11

Regulatory Requirements and Other Data Needs

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.

Monitoring Objectives and Spatial Scales

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

1. Determine the highest pollutant concentrations expected in the area covered by the network.

2. Determine representative pollutant concentrations in areas of high population density.

3. Determine the impact of significant sources or source categories on pollutant concentrations in 

the ambient air.

4. Determine general background pollutant concentrations.

5. Determine the regional extent of pollutant transport between populated areas.

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

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

SLAMS networks are designed to provide data for meeting the monitoring objectives described above 

and to assist EPA and states in solving environmental problems.

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

network (Table 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).

Table 1. Relationship Between 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
12

Table 2. Summary of Spatial Scales for SLAMS

Scales Applicable for SLAMS

SO2 CO O3 NO2 PB PM10 PM2.5

Micro. . .     

Middle. . .       

Neighborhood. . .       

Urban. . .      

Regional. . .     

Number of State and Local Air Monitoring Stations (SLAMS)

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

the SLAMS network, except for requiring a minimum number of SLAMS lead, SO2, and PM2.5 sites. 

For lead, EPA requires 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 half ton or more per year. Other factors 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. 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.
13

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 3.

Other Ambient Air Monitoring Data Needs

Ecology uses nephelometers throughout Washington State. Nephelometers are used for a variety of

purposes, including the WAQA program, ambient air quality assessment, and special studies. Typically,

nephelometer monitoring sites utilize Federal Reference Method (FRM) or Federal Equivalent Method 

(FEM) equipment for correlations and are operated in accordance with CFR requirements for quality 

assurance and quality control. Ecology also occasionally uses SPMS designation for criteria pollutant

monitoring sites, which allows Ecology to assess ambient 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. SPMS sites may be added to Ecology’s 

SLAMS network when a NAAQS exceedance has been recorded, or if elevated pollutant concentrations 

are consistently measured.

Table 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 Path

(meters)

Horizontal & 

Vertical Distance 

from Supporting 

Structures to 

Probe or 90% of 

Monitoring Path

(meters)

Distance from 

Trees to Probe or 

90% of Monitoring 

Path

(meters)

SO2

Middle [300m]

Neighborhood

Urban & Regional 

[1km]

3–15 >1 >10

CO

Micro, Middle

[300m]

Neighborhood

[1km]

3±0.5; 3–15 >1 >10

O3

Middle [300m]

Neighborhood

Urban & Regional 

[1km]

3–15 >1 >10

Ozone precursors Neighborhood & 

Urban [1km] 3–15 >1 >10

NO2

Middle [300m]

Neighborhood & 

Urban [1km]

3–15 >1 >10

PM10

Micro; Middle, 

Neighborhood 

Urban & Regional

2–7 (Micro);

2–15 (all other 

scales) 

>2 (all scales 

horizontal distance 

only)

>10 (all scales)
14

Network Review Procedure

Network Review Team and Preparation

Network report participants include Ecology’s Air Quality Program staff. Sufficient information is 

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

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

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

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 disinvestment 

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.

Determining Compliance with Appendix D and Special Monitoring 

Requirements

Ecology uses this review to determine whether it is meeting the number of monitors required by the Part 

58 Appendix D design criteria requirements, and whether the monitors properly located based on the 

monitoring objectives and spatial scales of representativeness presented in Appendix D.

Number and Location of Monitors

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

rather are determined by EPA Region 10 and Ecology on a case-by-case basis. EPA and Ecology ensure 

that SLAMS meet the monitoring objectives specified in Appendix D. Adequacy of the network is 

being determined by using a variety of tools. Appropriate location of monitors can be determined on the 

basis of stated objectives.
15

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 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 needs, program documents applicable to the network must be reviewed to 

determine the goals and specific siting criteria for the network. Compliance with monitoring objective 

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

Appendix D evaluations (are the number of monitors appropriate and are the monitors properly located).

Determining Compliance 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.

Figure 1. Map of Washington State monitoring (all sites)
16

Table 4. Carbon Monoxide, Parameter Code 42101

AQS# Site Name Est. Type Scale

Sampling

Frequency

Action

for 2015

530630049 Spokane, 3rd & Washington 1/97 SLAMS Micro Continuous Continue*

530330080 Seattle Beacon Hill 3/07 NCore Urban Continuous Continue

530330030 Seattle 10th & Weller 4/14 Near-road Urban Continuous Continue

530090013 Cheeka Peak 5/06 Rural NCore Regional Continuous Continue

Additional Monitors: None.

*Recommendations/Modifications: None. Ecology and its partners have divested of traditional CO 

monitoring with one exception, Spokane 3rd and Washington.

Figure 2. Map of Washington State CO sites
17

Spokane, 3rd and Washington

Site Name Spokane, 3rd and Washington – SLAMS 

AQS ID 530630049

GPS coordinates LAT/LONG: 047 39' 13"/117 25' 07"

Location At 3rd and Washington, Downtown Spokane

Address 3rd and Washington

County Spokane

Distance to road from gaseous probe (meters) 1

Traffic count (AADT, year) 94,000 I-90 (2012 WSDOT)

Groundcover Asphalt

Statistical Area Spokane

Monitor Information Pollutant, POC

Parameter code 42101

Basic monitoring objectives(s) NAAQS comparison

Site type(s) Highest Concentration

Monitor type(s) SLAMS

Instrument manufacturer and model Thermo 48 C

Method code 054

FRM/FEM/ARM/other FEM

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Micro

Monitoring start date 1/97

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Continuous, year-round

Probe height (meters) 3

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof 

(meters) 

N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) 63.50

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the annual 

CO NAAQS? 

Yes

Purpose: 3rd and Washington is a micro scale SLAMS site established in 1997. It is located in the downtown 

core of Spokane in a highly-traveled commercial area. The site is currently used for CO maintenance plan 

compliance. Spokane is a former CO nonattainment area.

Exceedances: This site has not exceeded the daily or annual standard for CO in over 15 years.
18

Seattle, Beacon Hill

Site Name Seattle Beacon Hill

AQS ID 530330080

GPS coordinates LAT/LONG: 047 34' 58"/122 18' 30"

Location At Jefferson Park/reservoir 

Address 4103 Beacon Avenue S., Seattle

County King

Distance to road from gaseous probe (meters) 120

Traffic count (AADT, year) 12,700 (2012 WSDOT)

Groundcover Grass, gravel

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 42101 (POC 2)

Basic monitoring objectives(s) NAQQS Comparison

Site type(s) Background

Monitor type(s) NCore

Instrument manufacturer and model Teledy ne-API 300EU

Method code 593

FRM/FEM/ARM/other FEM

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Urban

Monitoring start date 6/79 established, 3/07 Trace level CO

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Continuous, year-round

Probe height (meters) 4.65

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) 20

Distance from trees (meters) 20

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Pyrex

Residence time for reactive gases (seconds) 15

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the annual CO 

NAAQS? Yes

Purpose: Beacon Hill is an urban scale NCORE site located south of downtown Seattle, within Jefferson 

Park/reservoir. In addition to ozone, Beacon Hill site is used for monitoring trace level CO, SO2, NOy, PM2.5, air 

toxics, and speciation. Seattle Beacon Hill is also a long-term trend and research site.
19

Seattle, 10th and Weller

Site Name Seattle, 10th and Weller

AQS ID 530330030

GPS coordinates LAT/LONG: 047 59' 72"/122 31' 97"

Location Adjacent to Interstate 5 in Downtown Seattle

Address 10th and Weller

County King

Distance to road from gaseous probe (meters) 6

Traffic count (AADT, year) 146,000 I-5 (2012 WSDOT)

Groundcover Concrete, Grass

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 42101 (POC 2)

Basic monitoring objectives(s) NAQQS Comparison

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Teledyne-API T300EU

Method code 593

FRM/FEM/ARM/other FEM

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Micro

Monitoring start date 4/14

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Continuous, year-round

Probe height (meters) 3

Distance from supporting structure (meters) 3 

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) 1.6

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the annual CO

NAAQS? Yes

Purpose: Seattle 10th and Weller is Washington’s primary near-road monitoring site. CO monitoring is EPArequired at one near-road site.
20

Cheeka Peak (ORCAA)

Site Name Cheeka Peak

AQS ID 530090013

GPS coordinates LAT/LONG: 048 17' 12''/124 37' 13''

Location At Cheeka Peak

Address Cheeka Peak

County Clallam

Distance to road from gaseous probe (meters) Not near a road

Traffic count (AADT, year) N/A

Groundcover Shrubs, grass and gravel/dirt

Statistical Area Not in a CBMSA

Monitor Information Pollutant, POC 

Parameter code 42101 (POC 2)

Basic monitoring objectives(s) Research

Site type(s) Background/Regional Transport

Monitor type(s) Rural NCore

Instrument manufacturer and model Teledyne-API T300U

Method code 593

FRM/FEM/ARM/other FEM

Collecting Agency Olympic Region Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Regional

Monitoring start date 5/06

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Continuous, year-round

Probe height (meters) 5.5

Distance from supporting structure (meters) 0.3

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 21

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) 0.3 to 0.6

Unrestricted airflow (degrees) 175

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) 1.9

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the annual CO 

NAAQS? Yes

Purpose: Cheeka Peak is a rural NCore site located at the northwestern tip of Washington State. It is recognized 

as a national transport site.
21

Table 5. Ozone, Parameter Code 44201

AQS# Site Name Est. Type Scale

Sampling

Frequency

Action

for 2015

530009013 Cheeka Peak 5/06 Rural NCore Regional Continuous Continue

530630001 Cheney, Turnbull 5/99 SLAMS Urban Continuous Continue

530730005 Custer/Loomis 4/89 SLAMS Urban Continuous Continue

530330023 Enumclaw, Mud Mtn. 7/98 SLAMS Urban Continuous Continue

530330010 Issaquah, Lake Sam 12/75 SLAMS Urban Continuous Continue

530050003 Kennewick 6/15 SPMS Urban Continuous Continue

530530012 Mt. Rainier, Jackson

Visitor Center 7/98 SLAMS NPS supported Continuous Continue

530330017 North Bend, NB Way 6/98 SLAMS Urban Continuous Continue

530330080 Seattle, Beacon Hill 4/97 NCore Urban Continuous Continue

530630046 Spokane, Greenbluff 4/90 SLAMS Urban Continuous Continue

530110011 Vancouver, Blairmont 5/88 SLAMS Urban Continuous Continue

530670005 Yelm, Northern Pacific 5/06 SLAMS Urban Continuous Continue

Additional Monitors: Modeling indicated an ozone hot spot in Kennewick. A subsequent study during 

ozone season in 2014 confirmed higher values. Ecology and BCAA established an ozone site at 

Kennewick (BCAA Offices) for ozone season in June of 2015.

Recommendations/Proposed Modifications: None.

Note: Ecology provides technical support for ozone monitoring performed by local clean air agencies in 

Mount Vernon (NWCAA) and Spokane (SRCAA). See Other Agencies.
22

Figure 3. Map of Washington State ozone sites
23

Cheeka Peak (ORCAA)

Site Name Cheeka Peak

AQS ID 530090013

GPS coordinates LAT/LONG: 048 17’ 12”/124 37' 13” 

Location At Cheeka Peak

Address Cheeka Peak

County Clallam

Distance to road from gaseous probe (meters) Not near a road

Traffic count (AADT, year) N/A

Groundcover Shrubs, grass and gravel/dirt

Statistical Area Not in a CBMSA

Monitor Information Pollutant, POC 

Parameter code 44201

Basic monitoring objectives(s) Research

Site type(s) Background/Regional Transport

Monitor type(s) Rural NCore

Instrument manufacturer and model Teledyne-API T400

Method code 087

FRM/FEM/ARM/other FEM

Collecting Agency Olympic Region Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Regional

Monitoring start date 5/06

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 5.5

Distance from supporting structure (meters) 0.3

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 21

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) 0.3 to 0.6

Unrestricted airflow (degrees) 175

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) 1.9

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the ozone 

NAAQS? Yes

Design value 0.052

Purpose: Cheeka Peak is a rural NCore site located at the northwestern tip of Washington State. It is recognized 

as a national transport site.

Exceedances: This site has not exceeded the 8-hour ozone standard in the past three years.
24

Cheney, Turnbull Wildlife Refuge

Site Name Cheney Turnbull

AQS ID 530630001

GPS coordinates LAT/LONG: 047 24' 55"/117 31' 49"

Location At the Cheney National Wildlife Refuge

Address South 26010 Smith Road, Cheney

County Spokane

Distance to road from gaseous probe (meters) 200

Traffic count (AADT, year) 5,200 (195 2012 WSDOT)

Groundcover Grass

Statistical Area Spokane, WA

Monitor Information Pollutant, POC 

Parameter code 44201

Basic monitoring objectives(s) NAQQS Comparison

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Teledyne-API 400

Method code 087

FRM/FEM/ARM/other FEM

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Urban

Monitoring start date 5/99

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Seasonal (May-September)

Probe height (meters) 3

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) 70 

Distance from trees (meters) 100+

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) 3.8 

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the ozone 

NAAQS? Yes

Design value 0.061

Purpose: Cheney Turnbull is a background/transport scale site located at the Turnbull Wildlife Refuge, south of 

Spokane. It is a high-concentration and background/transport site for the Spokane area. Cheney Turnbull is a

CFR-required site by population. 

Exceedances: This site has not exceeded the 8-hour ozone standard in the past three years.
25

Custer/Loomis (NWCAA)

Site Name Custer/Loomis

AQS ID 530730005

GPS coordinates LAT/LONG: 048 95’ 25/-122 55’45

Location A shelter

Address 1330 Loomis Trail Road, Custer

County Whatcom

Distance to road from gaseous probe (meters) 67

Traffic count (AADT, year) 21,000 (I-5 2012 WSDOT)

Groundcover Grass

Statistical Area Bellingham, WA

Monitor Information Pollutant, POC 

Parameter code 44201

Basic monitoring objectives(s) NAQQS Comparison

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Teledyne-API 400

Method code 087

FRM/FEM/ARM/other FEM

Collecting Agency Northwest Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Urban

Monitoring start date 4/89

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Seasonal (May-September)

Probe height (meters) 3

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 130

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) 9

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the ozone 

NAAQS? Yes

Design value 0.045

Purpose: Custer/Loomis site provides data from Georgia Basin/Canadian impacts as modeling information for 

the Puget Sound Ozone network. 

Exceedances: This site has not exceeded the 8-hour standard for ozone in the past three years.
26

Enumclaw, Mud Mountain Dam

Site Name Enumclaw, Mud Mountain Dam

AQS ID 530330023

GPS coordinates LAT/LONG: 047 08' 28"/121 56' 09"

Location At Mud Mountain Dam (Army Corp of Engineers)

Address 30525 SE Mud Mountain Road, Enumclaw

County King

Distance to road from gaseous probe (meters) N/A

Traffic count (AADT, year) 14,000 (410 2012 WSDOT)

Groundcover Gravel and weeds 

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 44201

Basic monitoring objectives(s) NAQQS Comparison

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Teledyne-API 400

Method code 087

FRM/FEM/ARM/other FEM

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Urban

Monitoring start date 7/98

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Seasonal (May-September)

Probe height (meters) 4.3

Distance from supporting structure (meters) 0.5

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) 5.7 

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the ozone 

NAAQS? Yes

Design value 0.065

Purpose: Mud Mountain Dam is an urban scale SLAMS established in 1998 located 30 miles east of Seattle, 

near Enumclaw at the end of the ozone transport zone.

Exceedances: This site has exceeded the 8-hour standard in the past three years (2012).
27

Issaquah, Lake Sammamish State Park

Site Name Issaquah, Lake Sammamish

AQS ID 530330010

GPS coordinates LAT/LONG: 047 33' 07"/122 02' 40"

Location At Lake Sammamish State Park

Address 20050 SE 56th (Lake Sammamish State Park), 

Issaquah

County King

Distance to road from gaseous probe (meters) 440

Traffic count (AADT, year) 121,000 (I-90 2012 WSDOT)

Groundcover Gravel, grass

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 44201

Basic monitoring objectives(s) NAQQS Comparison

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Teledyne-API 400

Method code 087

FRM/FEM/ARM/other FEM

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Urban

Monitoring start date 12/75

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Seasonal (May-September)

Probe height (meters) 3.5

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) 2.8

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the ozone 

NAAQS? Yes

Design value 0.053

Purpose: Lake Sammamish is an urban scale site established in 1975 located east of Seattle, within Lake 

Sammamish State Park. Lake Sammamish is a long-term ozone trends site. 

Exceedances: This site has not exceeded the 8-hour standard in the past three years.
28

Kennewick, (BCAA)

Site Name Kennewick South Clodfelter Road

AQS ID 530050003

GPS coordinates LAT/LONG: 046 20' 45"/119 24' 37"

Location At BCAA Offices

Address 526 South Clodfelter Road, Kennewick

County Benton

Distance to road from gaseous probe (meters) 60

Traffic count (AADT, year) N/A

Groundcover Ground-grass and asphalt

Statistical Area Richland-Kennewick-Pasco, WA

Kennewick, S. Clodfelter Road Monitor Information 

Pollutant, POC 

Parameter code 44201

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SPMS

Instrument manufacturer and model Teledyne-API T400

Method code 087

FRM/FEM/ARM/other FEM

Collecting Agency Benton County Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 6/15

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Seasonal (May/September)

Probe height (meters) 7

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the ozone

NAAQS? Yes

Design value N/A

Purpose: Kennewick is an urban scale site for ozone established in June of 2015. It is representative of the 

Kennewick/ Richland area.

Exceedances: N/A. New site.
29

Mt. Rainier, Jackson Visitor Center

Site Name Mt. Rainier, Jackson Visitor Center

AQS ID 530530012

GPS coordinates LAT/LONG: 046 47' 07"/121 43' 58"

Location Mount Rainier National Park

Address At Jackson Visitor Center 

County King

Distance to road from gaseous probe (meters) 12

Traffic count (AADT, year) 506 (706, 2012 WSDOT)

Groundcover Asphalt, rock, snow

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 44201

Basic monitoring objectives(s) NAQQS Comparison

Site type(s) General Background

Monitor type(s) SLAMS

Instrument manufacturer and model Teledyne-API 400

Method code 087

FRM/FEM/ARM/other FEM

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Regional 

Monitoring start date 7/98

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Seasonal (May-September)

Probe height (meters) 6

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) 1 Supporting structure

Distance from trees (meters) 35

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 180

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) 4

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the ozone NAAQS? Yes

Design value 0.060

Purpose: The Jackson Visitor Center site is a regional scale ozone site established in 1998.

Exceedances: This site has not exceeded the 8-hour ozone standard in the past three years.
30

North Bend, North Bend Way

Site Name North Bend

AQS ID 530330017

GPS coordinates LAT/LONG: 047 29' 23"/121 46' 24"

Location At USFS Offices

Address 42404 SE North Bend Way, North Bend

County King

Distance to road from gaseous probe (meters) 180

Traffic count (AADT, year) 9,600 (202, 2012 WSDOT)

Groundcover Grass

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 44201

Basic monitoring objectives(s) NAQQS Comparison 

Site type(s) Regional Transport/Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Teledyne -API 400

Method code 087

FRM/FEM/ARM/other FEM

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Urban

Monitoring start date 6/98

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Seasonal (May-September)

Probe height (meters) 3

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 20

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) 2.8

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the ozone NAAQS? Yes

Design value 0.058

Purpose: North Bend Way is an urban scale site 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.

Exceedances: This site has exceeded the 8-hour ozone standard in the past three years (2012).
31

Seattle, Beacon Hill

Site Name Seattle Beacon Hill

AQS ID 530330080

GPS coordinates LAT/LONG: 047 34' 58"/122 18' 30"

Location At Jefferson Park/reservoir 

Address 4103 Beacon Avenue S., Seattle

County King

Distance to road from gaseous probe (meters) 120

Traffic count (AADT, year) 12,700 (2012 SDOT)

Groundcover Grass, gravel

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 44201

Basic monitoring objectives(s) NAQQS Comparison 

Site type(s) General Background/Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Teledyne-API 400E

Method code 087

FRM/FEM/ARM/other FEM

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Urban

Monitoring start date 4/97

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round 

Probe height (meters) 4.65

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) 20

Distance from trees (meters) 20

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Probe material for reactive gases Pyrex

Spacing from minor sources No minor sources

Residence time for reactive gases (seconds) 15

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the ozone NAAQS? Yes

Design value 0.044

Purpose: Beacon Hill is an urban scale NCORE site located south of downtown Seattle, within Jefferson 

Park/reservoir. In addition to ozone, the site is used for monitoring trace level CO, SO2, NOy, PM2.5, air toxics,

and speciation. Seattle Beacon Hill is also a long-term trend and research site.

Exceedances: This site has not exceeded the 8-hour standard in the past three years.
32

Spokane, Greenbluff

Site Name Spokane, Greenbluff

AQS ID 530630046

GPS coordinates LAT/LONG: 047 49' 37"/117 16' 31"

Location At the fire station in Chatteroy, WA 

Address E. 9814 Greenbluff Road, Chattaroy

County Spokane

Distance to road from gaseous probe (meters) 50

Traffic count (AADT, year) 20,000 (2, 2012 WSDOT)

Groundcover Grass, gravel

Statistical Area Spokane, WA

Monitor Information Pollutant, POC 

Parameter code 44201

Basic monitoring objectives(s) NAQQS Comparison

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Teledyne-API 400

Method code 087

FRM/FEM/ARM/other FEM

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Urban

Monitoring start date 4/90

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Seasonal, (May – September)

Probe height (meters) 3

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) 5. 7 

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the ozone NAAQS? Yes

Design value 0.061

Purpose: Greenbluff is an urban scale site located near Spokane. Greenbluff is used with Cheney to identify 

ozone patterns for the Spokane area. Spokane Greenbluff is a CFR population required site.

Exceedances: This site has not exceeded the 8-hour ozone standard in the past three years.
33

Vancouver, Blairmont HS

Site Name Vancouver, Blairmont

AQS ID 530110011

GPS coordinates LAT/LONG: 045 36' 37"/122 30' 59"

Location At Blairmont High School in Vancouver

Address 1500 SE Blairmont Drive, Vancouver

County Clark

Distance to road from gaseous probe (meters) 200

Traffic count (AADT, year) 72,000 (014, 2012 WSDOT)

Groundcover Grass, asphalt

Statistical Area Portland, OR – Vancouver, WA

Monitor Information Pollutant, POC 

Parameter code 44201

Basic monitoring objectives(s) NAQQS Comparison

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Teledyne-API 400

Method code 087

FRM/FEM/ARM/other FEM

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Urban

Monitoring start date 5/88

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Seasonal, (May – September)

Probe height (meters) 10

Distance from supporting structure (meters) 0.5

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 5 to small (5m fruit trees), 12 to tall (12 m 

conifers)

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) 15

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the ozone NAAQS? Yes

Design value 0.056

Purpose: Blairmont is an urban scale site near downtown Vancouver. The site represents the Washington part of 

the Portland/Vancouver air shed and part of the ozone maintenance planning effort of the Southwest Clean Air 

Agency (SWCAA). 

Exceedances: This site has not exceeded the 8-hour ozone standard in the past three years.
34

Yelm, Northern Pacific

Site Name Yelm – North Pacific

AQS ID 530670005

GPS coordinates 931 Northern Pacific Road, Yelm

Location In a Trailer

Address LAT/LONG: 046 57' 03"/122 35' 43"

County Thurston

Distance to road from gaseous probe (meters) 230

Traffic count (AADT, year) 17,000 (507 2012 WSDOT)

Groundcover Gravel, grass

Statistical Area Olympia, WA

Monitor Information Pollutant, POC 

Parameter code 44201

Basic monitoring objectives(s) NAQQS Comparison

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Teledyne-API 400

Method code 087

FRM/FEM/ARM/other FEM

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Urban

Monitoring start date 5/06

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Seasonal, (May – September)

Probe height (meters) 3

Distance from supporting structure (meters) 0.7

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 50

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) 4.4

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the ozone NAAQS? Yes

Design value 0.055

Purpose: Yelm is an urban scale site originally established in 1997 and relocated in 2006. The Yelm site is 

located in a commercial/residential area. Yelm represents ozone transport in the South Puget Sound area.

Exceedances: This site has exceeded the 8-hour ozone standard in the past three years (2012).
35

Table 6. Nitrogen Dioxide Parameter Codes 42600 NOy, 42601 NO, 42612 NOy-NO

AQS# Site Name Est. Type Scale

Sampling

Frequency

Action

for 2015

530330080 Seattle Beacon Hill 3/07 NCore Urban Continuous Continue

530090013 Cheeka Peak 5/06 Rural NCore Regional Continuous Continue

530330030 Seattle 10th & Weller 4/14 SLAMS Micro Continuous Continue 

TBD Tacoma 1/16 SLAMS Micro Continuous installation

Additional Monitors: A second near-road NO2 monitor is planned for installation in Tacoma during 2015.

Recommendations/Proposed Modifications: None

Purpose: Beacon Hill is an urban scale NCORE site located south of downtown Seattle, within City of Seattle 

park/reservoir. The site is used for monitoring trace level CO, SO2, NOy, PM2.5, air toxics, and

speciation. Seattle Beacon Hill is also a long-term trend and research site.

Figure 4. Map of Washington State NO2 sites
36

Seattle, Beacon Hill 

Site Name Seattle Beacon Hill

AQS ID 530330080

GPS coordinates LAT/LONG: 047 34' 58"/122 18' 30"

Location At Jefferson Park/reservoir 

Address 4103 Beacon Avenue South, Seattle

County King

Distance to road from gaseous probe (meters) 120

Traffic count (AADT, year) 12,700 (2012 WSDOT)

Groundcover Grass, gravel

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 42600, 42601, 42612, 42601, 42602, 42603

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Background

Monitor type(s) NCore

Instrument manufacturer and model Teledyne-API 200EU & Thermo 42C-Y

Method code 599, 574

FRM/FEM/ARM/other FEM

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Urban

Monitoring start date 2006 (NO) / 2013 (NO2) /2007 (NOy)

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Continuous, year-round

Probe height (meters) 4

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) 20 (NO2) 10 (NOy)

Distance from trees (meters) 20

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Pyrex

Residence time for reactive gases (seconds) 3.7(NO2) 5.5 (NOy)

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NO2 NAAQS? Yes

Purpose: Beacon Hill is an urban scale NCORE site located south of downtown Seattle, within Jefferson 

Park/reservoir. In addition to ozone, the site is used for monitoring trace level CO, SO2, NOy, PM2.5, air toxics,

and speciation. Seattle Beacon Hill is also a long-term trend and research site.
37

Seattle, 10th and Weller 

Site Name Seattle, 10th and Weller

AQS ID 530330030

GPS coordinates LAT/LONG: 047 59' 72"/122 31' 97"

Location Adjacent to Interstate 5 in Downtown Seattle

Address 10th and Weller

County King

Distance to road from gaseous probe (meters) 8

Traffic count (AADT, year) 18,400 (2012 WSDOT)

Groundcover Concrete, grass

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 42601, 42602, 42603

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Teledyne-API 200EU

Method code 599

FRM/FEM/ARM/other FEM

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Micro

Monitoring start date 4/14

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 3

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) 3.2

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NO2 NAAQS? Yes

Purpose: Seattle 10th and Weller is an EPA-required, near-road monitoring site adjacent to I-5 in Seattle.
38

Tacoma, (TBD)

Site Name Tacoma (TBD)

AQS ID TBD

GPS coordinates LAT/LONG Est.: 047 22’ 63”/122 46’ 22”

Location On Jenny Reed Elementary School property

Address 36th I-5

County Pierce 

Distance to road from gaseous probe (meters) 30

Traffic count (AADT, year) 

Groundcover Asphalt, grass

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 42601, 42602, 42603

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SPMS

Instrument manufacturer and model Teledyne-API 200EU

Method code 599

FRM/FEM/ARM/other FEM

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Micro

Monitoring start date Est. 1/16

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 4

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) 3.2

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NO2 NAAQS? Yes

Purpose: Tacoma (TBD) is an EPA-required, near-road monitoring site at Jenny Reed Elementary School 

adjacent to Interstate 5 in Tacoma. Start of operation is anticipated January 1, 2016.
39

Cheeka Peak (ORCAA) 

Site Name Cheeka Peak

AQS ID 530090013

GPS coordinates LAT/LONG: 048 17' 12''/124 37' 13''

Location At Cheeka Peak

Address Cheeka Peak

County Clallam

Distance to road from gaseous probe (meters) Not near a road

Traffic count (AADT, year) N/A

Groundcover Shrubs, grass and gravel/dirt

Statistical Area Not in a CBMSA

Monitor Information Pollutant, POC 

Parameter code 42600, 42601, 42612

Basic monitoring objectives(s) Research/

Site type(s) Background/Rural Transport

Monitor type(s) Rural NCore

Instrument manufacturer and model Teledyne-API T200U

Method code 599

FRM/FEM/ARM/other FEM

Collecting Agency Olympic Region Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Regional

Monitoring start date 5/06

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 5.5

Distance from supporting structure (meters) 0.3

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 21

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) 0.3 to 0.6

Unrestricted airflow (degrees) 175

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) 1.6

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NO2 NAAQS? Yes

Purpose: Cheeka Peak is a rural NCore site located at the northwestern tip of Washington State. It is recognized 

as a national transport site.
40

Table 7. Sulfur Dioxide Parameter Code 42401

AQS# Site Name Est. Type Scale

Sampling

Frequency

Action

for 2015

530330080 Seattle Beacon Hill 3/07 NCore Urban Continuous Continue

530090013 Cheeka Peak 5/06 Rural NCore Regional Continuous Continue

Additional Monitors: None.

Recommendations/Proposed Modifications: None.

Figure 5. Map of Washington State SO2 sites
41

Seattle, Beacon Hill 

Site Name Seattle Beacon Hill

AQS ID 530330080

GPS coordinates LAT/LONG: 047 34' 58"/122 18' 30"

Location At Jefferson Park/reservoir 

Address 4103 Beacon Avenue South, Seattle

County King

Distance to road from gaseous probe (meters) 120

Traffic count (AADT, year) 12,700 (2012 WSDOT)

Groundcover Grass, gravel

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 42401

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) NCore

Instrument manufacturer and model API T100U

Method code 560

FRM/FEM/ARM/other FEM

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Urban

Monitoring start date 2006

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Continuous, year-round

Probe height (meters) 4.65

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) 20

Distance from trees (meters) 20

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Pyrex

Residence time for reactive gases (seconds) 15

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the SO2 NAAQS? Yes

Purpose: Beacon Hill is an urban scale NCORE site located south of downtown Seattle, within Jefferson 

Park/reservoir. In addition to ozone, the site is used for monitoring trace level CO, SO2, NOy, PM2.5, air toxics,

and speciation. Seattle Beacon Hill is also a long-term trend and research site.
42

Cheeka Peak (ORCAA) 

Site Name Cheeka Peak

AQS ID 530090013

GPS coordinates LAT/LONG: 048 17’ 12”/124 37' 13” 

Location At Cheeka Peak

Address Cheeka Peak

County Clallam

Distance to road from gaseous probe (meters) Not near a road

Traffic count (AADT, year) N/A

Groundcover Shrubs, grass and gravel/dirt

Statistical Area Not in a CBMSA

Monitor Information Pollutant, POC 

Parameter code 42401

Basic monitoring objectives(s) Research

Site type(s) Background/Regional Transport

Monitor type(s) Rural NCore

Instrument manufacturer and model Teledyne-API T100U

Method code 600

FRM/FEM/ARM/other FEM

Collecting Agency Olympic Region Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Regional

Monitoring start date 5/06

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 5.5

Distance from supporting structure (meters) 0.3

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 21

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) 0.3 to 0.6

Unrestricted airflow (degrees) 175

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) 5.8

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the SO2 NAAQS? Yes

Purpose: Cheeka Peak is a rural NCore site located at the northwestern tip of Washington State. It is recognized 

as a national transport site.
43

Table 8. Particulate Matter 10, Parameter Code 81102

AQS# Site Name Est. Type Scale

Sampling

Type

Action

for 2015

530650004 Colville, S. Oak 11/96 SLAMS Neighborhood Continuous Continue

530050002 Kennewick, Metaline Ave. 10/94 SLAMS Neighborhood Continuous Continue

530630021 Spokane, Augusta Ave. 3/09 SLAMS Middle 1/6 Continue 

530630021 Spokane, Augusta Ave. 3/09 Collocated Middle 1/12 Continue

530770009 Yakima, S. 4th 4/00 SLAMS Neighborhood 1/6 Continue

Additional Monitors: None. 

Recommendations/Proposed Modifications: None. Note design value information below.

Thurston County Maintenance Area (Lacey PM2.5)

The Lacey College Street PM2.5 nephelometer site (530670013) is being used to assure continued compliance with 

the PM10 NAAQS as well as to confirm the Thurston County Maintenance Area (TCMA) continues to meet the 

qualification criteria of EPA’s LMP approach.

A 5-year NPM10 design value below 98μg/m3 demonstrates the TCMA continues to qualify for the LMP 

approach. The Lacey-College Street nephelometer site’s (53670013) 5-year PM10 design value estimate for 2010–

2014 was 43 μg/m3. The PM10 design value estimate for 2012–2014 was 45 μg/m3. The current design value 

estimates demonstrate the TCMA complies with the PM10 standard and continues to meet EPA’s LMP 

qualification criteria.

Kent, Seattle, and Tacoma PM10 Maintenance Areas

Three- and five-year design values for the Kent, Seattle, and Tacoma PM10 Maintenance Areas were calculated 

using the table look up method and the statistical fit method outlined in the LMP guidance document.

A 3-year PM10 design value of 150 μg/m3or below demonstrates continued compliance with the PM10 NAAQS. 

A 5-year design value below 98 μg/m3is required to qualify for the LMP approach. Design values calculated 

using the table look up method fall within the range of uncertainty of the statistical fit method. Because they are 

the most conservative values, only the statistical fit values are presented here.

The PM2.5 FEM TEOM at James Street and Central Avenue (530332004) is used to assure continued compliance 

with the PM10 NAAQS and to confirm continued eligibility for the LMP approach. The 2014 5-year design value 

is 49±6 μg/m3and the 3-year design value is 52±6 μg/m3.

The PM2.5 FEM TEOM at Seattle-Duwamish (530330057) is used to assure continued compliance with the PM10

NAAQS and to confirm continued eligibility for the LMPlan approach. The 2014 5-year design value is 58±6 

μg/m3and the 3-year design value is 61±7 μg/m3. Note: In 2014, there was not a complete year of data due to 

site relocation. The design values for Duwamish were calculated using the guidelines for incomplete data 

outlined in Appendix B, page B-1, of the PM10 SIP Development Guide.

The PM2.5 Nephelometer at Tacoma-Alexander Avenue (530530031) is used to assure continued compliance with 

the PM10 NAAQS and to confirm continued eligibility for the LMP approach. The 2014 5-year design value is 

60±13 μg/m3and the 3-year design value is 65±13 μg/m3.
44

Spokane County Maintenance Area (Spokane PM10)

The Spokane County Maintenance area design value is based on FRM and FEM 24-hour PM10 monitoring data 

from the Augusta Avenue site (530630021) in Spokane. The LMP Guidance directs the design value be based on 

the most recent five years’ of data. The most recent five years of data is from 2010–2014 using a combination of 

FRM and FEM data from the Augusta site.

A 5-year PM10 design value below 98 μg/m3demonstrates the Spokane County Maintenance Area continues to 

qualify for the LMP approach. The 5-year PM10 design value estimate for 2010–2014 was 80 μg/m3. For the 3-

year compliance with the PM10 NAAQS, the form of the standard is the number of 24-hour exceedances of 150 

μg/m3, averaged over three years. The 2014 PM10 design value for Augusta Avenue (530630021) is 0.4. This 

design value is in attainment with the standard, which is not to exceed one. The Spokane County Maintenance 

Area complies with the PM10 NAAQS and continues to meet EPA’s LMP qualification criteria.

Figure 6. Map of Washington State PM10 sites
45

Colville, South Oak 

Site Name Colville, South Oak

AQS ID 530650004

GPS coordinates LAT/LONG: 048 32' 41"/117 54' 13"

Location Rooftop of Stevens County Courthouse

Address 215 South Oak, Colville

County Stevens

Distance to road from gaseous probe (meters) 20

Traffic count (AADT, year) N/A

Groundcover Asphalt, cement, grass

Statistical Area Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 81102

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Thermo TEOM

Method code 079

FRM/FEM/ARM/other FEM

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood 

Monitoring start date 11/96

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 50+

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM10 NAAQS? Yes

Design value 0.34

Purpose: Colville S. Oak is a neighborhood scale site for PM10 established in 1996, located in the 

commercial/residential area of Colville on the roof of the courthouse.

Exceedances: This site has exceeded the standard for PM10 in the past three years (2014).
46

Kennewick, Metaline Avenue (BCAA)

Site Name Kennewick, Metaline Avenue

AQS ID 530050002

GPS coordinates LAT/LONG: 046 13' 06"/119 12' 03"

Location Rooftop of the Kennewick Skills Center

Address 5929 West Metaline, Kennewick

County Benton

Distance to road from gaseous probe (meters) 84

Traffic count (AADT, year) N/A

Groundcover Rooftop- asphalt, ground-grass and asphalt

Statistical Area Richland-Kennewick-Pasco, WA

Kennewick, Metaline Avenue Monitor Information 

Pollutant, POC 

Parameter code 81102

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Thermo TEOM

Method code 079

FRM/FEM/ARM/other FEM

Collecting Agency Benton County Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 10/94

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 7

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) 18

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 66

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) 6

Unrestricted airflow (degrees) 360

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM10 NAAQS? Yes

Design value 1.6 (0.4)1

Purpose: Kennewick is a neighborhood scale site for PM10 established in 1994 and located in the downtown 

Kennewick area. It is representative of Kennewick and the surrounding area which is subject to windblown dust.

Exceedances: Kennewick had three exceedances of 24-hr PM10 standard in 2013 and Washington plans to pursue 

exceptional event status for them. One exceedance in January 2014. Washington will flag the value and

determine the regulatory significance.

 

1

Pending exceptional events demonstration for high winds on 9/15/2013, 10/28/2013, and 11/02/2013.
47

Spokane, Augusta Avenue (SRCAA)

Site Name Spokane, Augusta Avenue.

AQS ID 530630021

GPS coordinates LAT/LONG: 047 39' 39"/117 21' 26"

Location Rooftop of the Spokane Region Clean Air Agency

Address 3104 E. Augusta Avenue, Spokane

County Spokane

Distance to road from gaseous probe (meters) 27

Traffic count (AADT, year) N/A

Groundcover Membrane roof, asphalt

Statistical Area Spokane, WA

Monitor Information Pollutant, POC 

Parameter code 81102

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SLAMS - Collocated

Instrument manufacturer and model Thermo TEOM 

Method code 079

FRM/FEM/ARM/other FEM/FRM

Collecting Agency Spokane Region Clean Air Agency

Analytical Lab Ecology

Reporting Agency Ecology

Spatial scale Middle

Monitoring start date 3/09

Current sampling frequency Continuous and 1/6

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 3

Distance from supporting structure (meters) 0.5

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM10 NAAQS? Yes

Design value 0.35

Purpose: Augusta Avenue is a middle scale site for PM10 located in a commercial area of Spokane. The site is 

representative of the Spokane area, which is a past PM10 nonattainment area.

Exceedances: There was one exceedance of the 24-hour PM10 standard at Spokane in 2013. It has been flagged,

leaving open the possibility of an exceptional event demonstration submittal to EPA in the future.
48

Yakima, South 4th (YRCAA)

Site Name Yakima, South 4th

AQS ID 530770009

GPS coordinates LAT/LONG: 046 35' 42"/120 30' 44"

Location Rooftop of Yakima Comprehensive Mental Health

Address 402 South 4th Avenue, Yakima

County Yakima

Distance to road from gaseous probe (meters) N/A

Traffic count (AADT, year) N/A

Groundcover Membrane roof, cement

Statistical Area Yakima, WA

Monitor Information Pollutant, POC 

Parameter code 81102

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Grasby Anderson

Method code 063

FRM/FEM/ARM/other FRM

Collecting Agency Yakima Region Clean Air Agency

Analytical Lab Ecology

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 4/00

Current sampling frequency 1/6

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2 rooftop, 12 ground

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) 7

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 34

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM10 NAAQS? Yes

Design value 0

Purpose: South 4th is a neighborhood scale site for PM10 located in a commercial/residential area near 

downtown Yakima. The site is representative of the Yakima area, a past PM10 nonattainment area.

Exceedances: This site has not exceeded standard for PM10 in over 10 years.
49

Table 9. Particulate Matter 2.5, Parameter Codes 88101, 88502

AQS# Site Name Est. Type

Sample

Type

Sampling

Frequency

Action

for 2015

530272002 Aberdeen Division St. 8/02 SLAMS Continuous Continuous Continue 

530330037 Bellevue, Bellevue Way 4/02 SLAMS Continuous Continuous Continue

530730015 Bellingham, Yew St. 11/12 SLAMS Continuous Continuous Continue 

530350007 Bremerton Spruce 5/12 SLAMS Continuous Continuous Continue

530030004 Clarkston 3/07 SLAMS Continuous Continuous Continue

530410004 Chehalis 12/09 SLAMS Continuous Continuous Continue

530090013 Cheeka Peak 5/06 Rural NCore Continuous Continuous Continue

530650004 Colville 1/02 SLAMS Continuous Continuous Continue

530610020 Darrington, Fir St. 12/10 SLAMS Continuous Continuous Continue

530130002 Dayton, W. Main 2/09 SLAMS Continuous Continuous Continue

530370002 Ellensburg 10/07 SLAMS Continuous Continuous Continue

530050002 Kennewick, Metaline Ave. 8/04 SLAMS Continuous Continuous Continue 

530332004 Kent, James & Central 12/10 SLAMS Continuous Continuous Continue 

530670013 Lacey, College St. 1/02 SLAMS Continuous Continuous Continue

530750005 LaCrosse, Hill St. 7/02 SLAMS Continuous Continuous Continue

530330024 Lake Forest Park, Ballinger Way 1/03 SLAMS Continuous Continuous Continue

530150015 Longview, 30th Ave. 3/03 SLAMS Continuous Continuous Continue

530610005 Lynnwood, 212th 1/11 SLAMS Continuous Continuous Continue 

530610005 Lynnwood, 212th 9/13 SLAMS Collocated Continuous Continue

530611007 Marysville, 7th Ave. 2/10 SLAMS Continuous Continuous Continue

530611007 Marysville, 7th Ave. 7/12 SLAMS Collocated Continuous Continue

530210002 Mesa, Pepoit Way 1/03 SLAMS Continuous Continuous Continue

530251002 Moses Lake, Balsam St. 1/03 SLAMS Continuous Continuous Continue

530570015 Mt. Vernon, S Second St. 8/02 SLAMS Continuous Continuous Continue

530330017 North Bend, North Bend Way 3/03 SLAMS Continuous Continuous Continue

530090016 Port Angeles, E. 5th St. 4/15 SLAMS Continuous Continuous Continue

530310003 Port Townsend, San Juan Ave. 02/01 SLAMS Continuous Continuous Continue

530750003 Pullman, Dexter Ave. 3/01 SLAMS Continuous Continuous Continue

530531018 Puyallup, 128th St. 1/03 SLAMS Continuous Continuous Continue

530010003 Ritzville, Alder St. 3/01 SLAMS Continuous Continuous Continue

530750006 Rosalia, Josephine St. 6/02 SLAMS Continuous Continuous Continue

530330080 Seattle, Beacon Hill 2/10 NCore SEQ/Cont. 1/3 Continue 

530330057 Seattle, E Marginal Way 12/09 SLAMS Continuous Continuous Continue

530330030 Seattle 10th & Weller 6/14 SLAMS Continuous Continuous Continue

530450007 Shelton, W. Franklin 4/11 SLAMS Continuous Continuous Continue 

530630021 Spokane, Augusta 3/13 SLAMS SEQ/Cont. 1/6 Continue 

530630047 Spokane, Monroe St. 7/03 SLAMS Continuous Continuous Continue

530530031 Tacoma, Alexander Ave. 1/03 SLAMS Continuous Continuous Continue

530530029 Tacoma, S. L St. 1/10 SLAMS SEQ/Cont. 1/1 Continue 
50

Table 9. Particulate Matter 2.5, Parameter Codes 88101, 88502

AQS# Site Name Est. Type

Sample

Type

Sampling

Frequency

Action

for 2015

530530029 Tacoma, S. L St. 4/12 Co-loc SEQ/Cont. 1/12 Continue

530110024 Vancouver NE 84th 12/14 SLAMS FEM Continuous Continue

530710005 Walla Walla, 12th St. 1/02 SLAMS Continuous Continuous Continue

530070011 Wenatchee Fifth St. 12/12 SLAMS Continuous Continuous Continue

530110022 Yacolt, Yacolt Rd. 6/07 SLAMS Continuous Continue Continue

530770009 Yakima, S 4th Ave. 5/00 0/11 SLAMS SEQ/Cont. 1/3 Continue

Additional Monitors: None.

Recommendations/Modifications: Vancouver was relocated in 2014, Port Angeles in 2015. ORCAA is 

planning relocation of the Aberdeen site in 2015 for safety reasons.

Notes: Nephelometers are not EPA equivalent method instruments and design values are estimates. Ecology 

uses WAQA for reporting PM2.5 to inform and protect citizens of Washington. WAQA reporting is more 

protective of human health. Ecology’s goal is to keep 24-hour concentrations below 20μg/m3. In addition, some 

monitors in areas of Washington are not intended to be solely NAAQS based.

Selected monitors are used for protection of human health by calling burn bans during home heating season, 

making daily decisions for agricultural burning and health information- reporting PM2.5 values.

Ecology and its partners do not operate any seasonal PM2.5 monitors.
51

Figure 7. Map of Washington State PM2.5 sites
52

Aberdeen, Division Street (ORCAA) - Scheduled for relocation in 2015

Site Name Aberdeen Division Street

AQS ID 530272002

GPS coordinates LAT/LONG: 046 58' 21"/123 49' 54"

Location At Harbor High School

Address 359 North Division, Aberdeen

County Grays Harbor

Distance to road from gaseous probe (meters) 40 feet

Traffic count (AADT, year) N/A 

Groundcover Asphalt

Statistical Area Not in an MSA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Olympic Region Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 8/02

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 10 from ground 2 from roof

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value N/A*

*Insufficient data.

Purpose: The Aberdeen site is neighborhood scale. The site represents impacts to Aberdeen and the immediate

Grays Harbor area from smoke related to home heating and mobile sources. It is used for curtailment calls during 

home heating season. ORCAA is relocating this site during 2015 for safety concerns.
53

Bellevue, Bellevue Way

Site Name Bellevue, Bellevue Way

AQS ID 530330037

GPS coordinates LAT/LONG: 047 36' 47"/122 12' 06"

Location Rooftop of Alvin Goldfarb Jewelers

Address 305 Bellevue Way, Bellevue

County King

Distance to road from gaseous probe (meters) 20

Traffic count (AADT, year) N/A

Groundcover Paved, asphalt and concrete

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 4/02

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2

Distance from supporting structure (meters) 2

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) 30

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon 

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 14

Purpose: The Bellevue Way site is neighborhood scale. It is representative of mobile source and smoke impacts 

in the area and used for curtailment calls during home heating season.
54

Bellingham, Yew Street (NWCAA)

Site Name Bellingham, Yew Street

AQS ID 530730025

GPS coordinates LAT/LONG: 048 45' 46"/122 26' 25"

Location Rooftop of 7-11

Address 2412 Yew Street, Bellingham

County Whatcom

Distance to road from gaseous probe (meters) 30

Traffic count (AADT, year) N/A

Groundcover Membrane roof, asphalt

Statistical Area Bellingham, WA

Monitor Information Pollutant, POC 

Parameter code 88101 (POC 3)

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Thermo 1405F

Method code 581

FRM/FEM/ARM/other FEM

Collecting Agency Northwest Clean Air Agency 

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 9/88 established, 11/12 FEM installed

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 20

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? Yes

Design value 16

Purpose: Bellingham, Yew Street site is neighborhood scale. It is impacted by smoke related to home heating in 

the Bellingham/Whatcom County area and used for curtailment calls during home heating season.
55

Bremerton, Spruce Avenue (PSCAA)

Site Name Bremerton, Spruce

AQS ID 530350007

GPS coordinates LAT/LONG: 047 59' 26"/122 62' 73"

Location A shelter

Address 3250 Spruce Avenue, Bremerton

County Kitsap

Distance to road from gaseous probe (meters) 100

Traffic count (AADT, year) N/A

Groundcover Grass

Statistical Area Bremerton, WA

Monitor Information Pollutant, POC 

Parameter code 88101 (POC 3)

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Thermo 8500C

Method code 181

FRM/FEM/ARM/other FEM

Collecting Agency Puget Sound Clean Air Agency 

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 5/12

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2.5

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 150

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? Yes

Design value N/A*

*Insufficient data.

Purpose: Bremerton Spruce replaced Bremerton Meadowdale in 2012. Bremerton Spruce is a neighborhood 

scale residential site and provides air quality information to a population of 280,000 Kitsap County residents.
56

Cheeka Peak - (ORCAA)

Site Name Cheeka Peak

AQS ID 530090013

GPS coordinates LAT/LONG: 048 17' 12''/124 37' 13''

Location At Cheeka Peek

Address Cheeka Peak

County Clallam

Distance to road from gaseous probe (meters) 7

Traffic count (AADT, year) N/A

Groundcover Shrubs, grass and gravel/dirt

Statistical Area Not in an MSA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 4)

Basic monitoring objectives(s) Research

Site type(s) Background/Regional Transport

Monitor type(s) Rural NCore

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Olympic Region Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Regional

Monitoring start date 5/06

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 5.5

Distance from supporting structure (meters) 0.3

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 21

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) 0.3 to 0.6

Unrestricted airflow (degrees) 175

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 5

Purpose: Cheeka Peak is an NCore, regional scale site established in 2006 as a national transport site.
57

Chehalis, Market Boulevard

Site Name Chehalis, Market Boulevard

AQS ID 530410004

GPS coordinates LAT/LONG: 046 6640''/122 96' 73''

Location Rooftop 

Address 350 North Market, Chehalis

County Lewis

Distance to road from gaseous probe (meters) 20

Traffic count (AADT, year) N/A

Groundcover Membrane roof

Statistical Area Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 12/09

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 12

Distance from supporting structure (meters) 0.3

Distance from obstructions on roof (meters) 11

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 25

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 17

Purpose: Chehalis is a neighborhood scale site established in late 2009. It is located in a mixed

commercial/residential area of Chehalis. It is impacted by smoke from home heating and used for curtailment 

calls during home heating season.
58

Clarkston, STP

Site Name Clarkston, STP

AQS ID 530030004

GPS coordinates LAT/LONG: 046 25' 32''/117 3' 35''

Location At the Clarkston sewage treatment plant 

Address 13th Street and Port Way, Clarkston

County Asotin

Distance to road from gaseous probe (meters) 150

Traffic count (AADT, year) N/A

Groundcover Grass

Statistical Area Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 6/93 established, 3/07 neph installed

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 3

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value N/A

*Insufficient data.

Purpose: Clarkston is a neighborhood scale site established in 1993 as a PM10 site and converted to PM2.5 in 

2007. It is located in a mixed/residential area of Clarkston at the sewage treatment plant.
59

Colville, South Oak

Site Name Colville, South Oak

AQS ID 530650004

GPS coordinates LAT/LONG: 048 32' 41"/122 54' 13"

Location Rooftop of the Stevens Co Courthouse

Address 215 South Oak Street, Colville

County Stevens

Distance to road from gaseous probe (meters) 20

Traffic count (AADT, year) N/A

Groundcover Asphalt, Cement, grass

Statistical Area Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 12/96 est. 1/02 nephelometer 

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 50+

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 25

Purpose: South Oak is a neighborhood scale site for PM2.5 originally established in 1996 as a PM10 site and 

converted to PM2.5 in 2009. It is located in the commercial/residential area of Colville.
60

Darrington, Fir Street (PSCAA)

Site Name Darrington, Fir Street

AQS ID 530610020

GPS coordinates LAT/LONG: 048 14' 49"/121 36' 11"

Location A shelter 

Address 1085 Fir Street, Darrington

County Snohomish

Distance to road from gaseous probe (meters) 120

Traffic count (AADT, year) N/A

Groundcover Asphalt

Statistical Area Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 88101 (POC 3)

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Thermo 8500C

Method code 181

FRM/FEM/ARM/other FEM

Collecting Agency Puget Sound Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 6/07 established, 12/10 FEM

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2.5

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) 25 - Building 

Distance from trees (meters) 200

Distance to furnace or incinerator flue (meters) 200 

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 27

Purpose: Darrington is a neighborhood scale residential site impacted by smoke from home heating.
61

Dayton, 206 West Main

Site Name Dayton

AQS ID 530130002

GPS coordinates LAT/LONG: 046.3180''/117.9850

Location Shelter next to firehouse

Address 206 West Main, Dayton

County Columbia

Distance to road from gaseous probe (meters) 33

Traffic count (AADT, year) N/A

Groundcover Gravel, asphalt

Statistical Area Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 2/09

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 6

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated 

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 16

Purpose: Dayton is a neighborhood scale small-community site located in Eastern Washington impacted by 

smoke from burning activities in the area. Data is used for curtailment calls and burn/no burn calls during 

agricultural burning seasons.
62

Ellensburg, Ruby Street

Site Name Ellensburg, Ruby Street

AQS ID 530370002

GPS coordinates LAT/LONG: 046 59' 37"/120 32' 42"

Location Rooftop of Hal Holms Library

Address 201 North Ruby Street, Ellensburg

County Kittitas

Distance to road from gaseous probe (meters) 33

Traffic count (AADT, year) N/A 

Groundcover Asphalt, cement

Statistical Area Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 88101 (POC 3)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Thermo 1405F FEM

Method code 581

FRM/FEM/ARM/other FEM

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 11/95 established, 10/07 neph, 11/14 FEM

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value N/A*

*Insufficient data.

Purpose: Ellensburg is a neighborhood scale site established in 1995 as a PM10 site and converted to PM2.5 in 

2007. Upgraded to an FEM in November 2014. It is located in a residential area of Ellensburg impacted by 

smoke from home heating devices and used for curtailment calls during home heating season.
63

Kennewick, Metaline Avenue (BCAA)

Site Name Kennewick, Metaline Avenue

AQS ID 530050002

GPS coordinates LAT/LONG: 046 13' 06"/119 12' 03"

Location Rooftop of Kennewick Skills Center

Address 5929 West Metaline, Kennewick

County Benton

Distance to road from gaseous probe (meters) 84

Traffic count (AADT, year) N/A

Groundcover Rooftop-asphalt, ground grass and asphalt

Statistical Area Richland, Kennewick, and Pasco, WA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Benton Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 8/04

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 7

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) 18

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 66

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) 6

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value N/A*

*Insufficient data.

Purpose: Kennewick is a neighborhood scale site. The site is impacted from smoke from home heating devices 

and agricultural sources, and is geographically representative of the Tri-Cities area. Kennewick is used for 

curtailment calls during home heating season.
64

Kent, James, and Central (PSCAA)

Site Name Kent, James and Central

AQS ID 530332004

GPS coordinates LAT/LONG: 047 23' 10"/122 13' 55"

Location A shelter

Address 614 North Railroad, Kent

County King

Distance to road from gaseous probe (meters) 25

Traffic count (AADT, year) N/A 

Groundcover Asphalt, landscaping

Statistical Area Seattle-Bellevue-Everett, WA

Purpose: Kent is a neighborhood scale site in the South Puget Sound that is impacted from mobile sources, light 

industry, and smoke from home heating devices. The site is representative of Kent and the Kent Valley area.

Monitor Information Pollutant, POC 

Parameter code 88101(POC 3)

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Thermo 8500c FEM

Method code 181

FRM/FEM/ARM/other FEM

Collecting Agency Puget Sound Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 7/87 established, 12/10 FEM

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2.5

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 120 

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? Yes

Design value 23
65

Lacey, College Street (ORCAA)

Site Name Lacey, College Street

AQS ID 530670013

GPS coordinates LAT/LONG: 047 01' 43"/122 49' 15"

Location At Mountain View Elementary School

Address 1900 College Street SE, Lacey

County Thurston

Distance to road from gaseous probe (meters) 40

Traffic count (AADT, year) N/A

Groundcover Grass

Statistical Area Olympia, WA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Ecotech M90003/1000G

Method code 812

FRM/FEM/ARM/other Other

Collecting Agency Olympic Region Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 1/02

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 10 from ground 

Distance from supporting structure (meters) 2 

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 28

Purpose: Lacey, College Street is a neighborhood scale site impacted by smoke from home heating devices. The 

site is representative of the Lacey/Olympia/Thurston County area. The monitor at this site is also used to 

determine compliance with the PM10 NAAQS as well as documenting the area continues to qualify for EPA’s 

LMP option.
66

LaCrosse, Hill Street

Site Name LaCrosse, Hill Street

AQS ID 530750005

GPS coordinates LAT/LONG: 046 48' 55"/117 52' 26"

Location Rooftop 

Address 100 Hill Street, LaCrosse

County Whitman

Distance to road from gaseous probe (meters) 100

Traffic count (AADT, year) N/A

Groundcover Grass

Statistical Area Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 7/02

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 3

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 16

Purpose: LaCrosse is a neighborhood scale small-community monitor in Eastern Washington impacted by 

smoke from burning. LaCrosse is used for agricultural burn/no-burn decisions and curtailment calls during home 

heating season. It also provides modeling and mapping information.
67

Lake Forest Park, Ballinger Way (PSCAA)

Site Name Lake Forest Park, Ballinger Way

AQS ID 530330024

GPS coordinates LAT/LONG: 047 45' 18"/122 16' 50"

Location Rooftop at the strip mall

Address 17171 Bothell Way NE, Lake Forest Park

County King

Distance to road from gaseous probe (meters) 200

Traffic count (AADT, year) N/A

Groundcover Membrane roof, asphalt

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Ecotech M9003/1000G

Method code 812

FRM/FEM/ARM/other Other

Collecting Agency Puget Sound Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 3/99 established, 1/03 nephelometer installed

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2.5 rooftop 35 from ground

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A 

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 40

Distance to furnace or incinerator flue (meters) 20

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 24

Purpose: Lake Forest Park is a neighborhood scale site impacted by smoke from home heating devices and 

mobile sources from two adjacent arterials. It is used for curtailment calls during home heating season.
68

Longview, 30th Avenue (SWCAA)

Site Name Longview, 30th Avenue

AQS ID 530150015

GPS coordinates LAT/LONG: 046 08' 22"/122 57' 43"

Location at Olympic Middle School

Address 1324 30th Avenue, Longview

County Cowlitz

Distance to road from gaseous probe (meters) 18

Traffic count (AADT, year) N/A

Groundcover Grass, asphalt

Statistical Area Longview, WA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Southwest Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 3/03

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 10 

Distance from supporting structure (meters) 0.5

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 18

Purpose: Longview is a neighborhood scale site impacted by smoke from home heating. It is representative of 

the Longview/Kelso area and is used for curtailment calls during home heating season.
69

Lynnwood, 212th Street (PSCAA)

Site Name Lynnwood, 212th Street

AQS ID 530610005

GPS coordinates LAT/LONG: 047 48' 23"/122 19' 00"

Location at Snohomish PUD

Address 6120 212th Street SW, Lynnwood

County Snohomish

Distance to road from gaseous probe (meters) 40

Traffic count (AADT, year) N/A

Groundcover Asphalt

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 88101 (POC 3 & 4)

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Thermo and Thermo 8500c FEM

Method code 181 and 181

FRM/FEM/ARM/other FEM and Collocated FEM

Collecting Agency Puget Sound Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 1/11 FEM and 9/13 Collocated

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 4

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) 1 rails

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 50 

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) 2

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? Yes

Design value 20

Purpose: Lynnwood is a neighborhood scale site impacted by smoke during home heating season. Lynnwood is

representative of Lynnwood and South Snohomish County.
70

Marysville, 7th Avenue (PSCAA)

Site Name Marysville, 7th Avenue

AQS ID 530611007

GPS coordinates LAT/LONG: 048 03' 18"/122 10' 33"

Location at Marysville Junior High School

Address 1605 7th Avenue, Marysville

County Snohomish

Distance to road from gaseous probe (meters) 15

Traffic count (AADT, year) N/A

Groundcover Grass

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 88101 (POC 3 & 4)

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Thermo & Thermo 8500C

Method code 181 & 181

FRM/FEM/ARM/other FEM & Collocated FEM

Collecting Agency Puget Sound Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 9/91 established, 2/10 FEM, 7/12 FEM Collocated

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 3

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 75

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) 2

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? Yes

Design value 26

Purpose: Marysville is a neighborhood scale site impacted by smoke during home heating season, mobile 

sources, and light industry. Marysville is representative of Marysville and the North Snohomish County area.
71

Mesa, Pepoit Way

Site Name Mesa, Pepoit Way

AQS ID 530210002

GPS coordinates LAT/LONG: 046 34' 32"/119 00' 25"

Location Rooftop

Address 200 Pepiot Way, Mesa

County Franklin

Distance to road from gaseous probe (meters) 300

Traffic count (AADT, year) N/A

Groundcover Grass, scrub

Statistical Area Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 1/03

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 6

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) 33

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 18

Purpose: Mesa is a neighborhood scale small-community site in Eastern Washington impacted by agricultural

sources and smoke from home heating. It is used for daily agricultural burn decisions and curtailment calls during

home heating season.
72

Moses Lake, South Balsam Street

Site Name Moses Lake, Balsam Street

AQS ID 530251002

GPS coordinates LAT/LONG: 047 07' 50"/119 16' 22"

Location Rooftop 

Address 412 S Balsam Street, Moses Lake

County Grant

Distance to road from gaseous probe (meters) 25

Traffic count (AADT, year) N/A

Groundcover Grass

Statistical Area Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 88502 (POC4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 1/03

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 6

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) 2

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 25

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 20

Purpose: Moses Lake is a neighborhood scale, small community site in Eastern Washington impacted by

agricultural sources and smoke from home heating sources. It is used for daily agricultural burn decisions and

curtailment calls during home heating season.
73

Mt. Vernon, South Second Street (NWCAA)

Site Name Mt. Vernon, South Second Street

AQS ID 530570015

GPS coordinates LAT/LONG: 048 24' 37"/122 20' 16"

Location A room at NWCAA Offices

Address 1600 South Second Street, Mount Vernon

County Skagit

Distance to road from gaseous probe (meters) 25

Traffic count (AADT, year) N/A

Groundcover Asphalt

Statistical Area Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Northwest Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 8/02

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 7

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 10

Purpose: Mt. Vernon is a neighborhood scale, small community site impacted by home heating devices. Mt. 

Vernon is used for curtailment calls during home heating season.
74

North Bend, North Bend Way

Site Name North Bend, North Bend Way

AQS ID 530330017

GPS coordinates LAT/LONG: 047 29' 23"/121 46' 24"

Location a shelter at USFS Offices

Address 42404 SE North Bend Way, North Bend

County King

Distance to road from gaseous probe (meters) 180

Traffic count (AADT, year) N/A

Groundcover Grass

Statistical Area Seattle-Bellevue-Everett, WA

Information Pollutant, POC 

Parameter code 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 3/03

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 3

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 20

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 16

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

smoke from home heating devices. North Bend is used for curtailment calls during home heating season. North

Bend is collocated with ozone and meteorological equipment.
75

Port Angeles, East 5th Street (ORCAA)

Site Name Port Angeles, East 5th Street

AQS ID 530090016

GPS coordinates LAT/LONG: 048 11' 50"/123 43' 64"

Location At the Fire Station

Address 102 East 5th Street, Port Angeles

County Clallam

Distance to road from gaseous probe (meters) 15

Traffic count (AADT, year) N/A

Groundcover Grass, asphalt

Statistical Area Not in an MSA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Olympic Region Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 11/99 established, 4/15 relocated

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 20 from ground 2 from roof

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? No

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value N/A*

*Insufficient data.

Purpose: Port Angeles is a neighborhood scale site adjacent to Olympic National Park, a Class I area and 

impacted by smoke from home heating sources. Port Angeles is used for curtailment calls during home heating 

season. Port Angeles was relocated in 2015. This relocation was outlined and reported in the 2014 ANP.
76

Port Townsend, San Juan Avenue (ORCAA)

Site Name Port Townsend, San Juan Avenue

AQS ID 530310003

GPS coordinates LAT/LONG: 048 07' 45"/122 46' 46"

Location At Blue Herron School

Address 3939 San Juan Avenue, Port Townsend

County Jefferson

Distance to road from gaseous probe (meters) 45

Traffic count (AADT, year) N/A

Groundcover Grass

Statistical Area Not in an MSA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Olympic Region Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 2/00 established, 2/01 nephelometer 

installed

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 30 from ground 2 from roof

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 14

Purpose: Port Townsend is a neighborhood scale SLAMS site impacted by smoke from home heating devices. 

Port Townsend is used for curtailment calls during home heating season. It is representative of the east Jefferson 

County area.
77

Pullman, Dexter Avenue

Site Name Pullman, Dexter Avenue

AQS ID 530750003

GPS coordinates LAT/LONG: 046 43' 28"/117 10' 46"

Location At Pullman Public School

Address 240 SE Dexter, Pullman

County Whitman

Distance to road from gaseous probe (meters) 40

Traffic count (AADT, year) N/A

Groundcover Asphalt, grass

Statistical Area Not in an MSA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Ecotech M9003/1000G

Method code 812

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 3/01

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 3

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) 20

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 17

Purpose: Pullman is a neighborhood scale site in Eastern Washington impacted by smoke from burning. 

Pullman is used for daily agricultural burn/no-burn decisions and curtailment calls during home heating season.
78

Puyallup, 128th Street (PSCAA)

Site Name Puyallup, 128th Street

AQS ID 530531018

GPS coordinates LAT/LONG: 047 08' 24"/122 18' 01"

Location A shelter 

Address 9616 128th Street East, Puyallup

County Pierce

Distance to road from gaseous probe (meters) 20

Traffic count (AADT, year) N/A

Groundcover Gravel, grass

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Ecotech M9003/1000G

Method code 812

FRM/FEM/ARM/other Other

Collecting Agency Puget Sound Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 12/91 established, 1/03 nephelometer 

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 80

Distance to furnace or incinerator flue (meters) 100

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 24

Purpose: Puyallup is a neighborhood scale site impacted by smoke from home heating devices in the Puyallup 

South Hill/Pierce County area.
79

Ritzville, Alder Street

Site Name Ritzville, Alder Street

AQS ID 530010003

GPS coordinates LAT/LONG: 047 07' 43"/118 22' 55"

Location A shelter

Address 109 West Alder, Ritzville

County Adams

Distance to road from gaseous probe (meters) 80

Traffic count (AADT, year) N/A

Groundcover Asphalt, gravel

Statistical Area Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 10/00 established, 3/01 nephelometer 

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 8

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 16

Purpose: Ritzville is a neighborhood scale, small community located in Eastern Washington impacted by smoke

from burning activities in the area. Ritzville is used for making daily agricultural burn/no-burn decisions and 

curtailment calls during home heating season.
80

Rosalia, Josephine Street

Site Name Rosalia, Josephine Street

AQS ID 530750006

GPS coordinates LAT/LONG: 047 13' 52"/117 22' 08"

Location In a building

Address 906 South Josephine Street, Rosalia

County Whitman

Distance to road from gaseous probe (meters) 27

Traffic count (AADT, year) N/A

Groundcover Asphalt

Statistical Area Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 6/02

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) 15 Furnace exhaust

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 15

Purpose: Rosalia is a neighborhood scale small-community site located in Eastern Washington impacted by 

smoke from burning in the area. Rosalia is used for making daily agricultural burning decisions and curtailment 

calls during home heating season. 
81

Seattle, Beacon Hill

Site Name Seattle, Beacon Hill

AQS ID 530330080

GPS coordinates LAT/LONG: 047 34' 58"/122 18' 30"

Location A shelter at Jefferson Park/reservoir

Address 4103 Beacon Avenue South, Seattle

County King

Distance to road from gaseous probe (meters) 10

Traffic count (AADT, year) N/A

Groundcover Gravel, grass

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 88101 (POC 3 & POC 1)

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) NCore

Instrument manufacturer and model Thermo 8500C FEM & Thermo 2025 FRM

Method code 181 & 118

FRM/FEM/ARM/other Thermo 8500 FEM & 2025 FRM

Collecting Agency Ecology

Analytical Lab Ecology

Reporting Agency Ecology

Spatial scale Urban

Monitoring start date 6/79 established, 2/10 FEM installed

Current sampling frequency Continuous & 1/3

Calculated sampling frequency N/A

Sampling season Year Round

Probe height (meters) 6 FEM 3 FRM

Distance from supporting structure (meters) 2 FRM

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) 2

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Pyrex

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? Yes

Design value 16 FEM

Purpose: Seattle, Beacon Hill is an urban scale NCORE site. Seattle Beacon Hill is collocated with an FEM, 

FRM, meteorological equipment, as well as toxics and speciation monitoring. This site is FEM and FRM 

equipped.
82

Seattle, Duwamish (PSCAA)

Site Name Seattle, East Marginal Way

AQS ID 530330057 (same)

GPS coordinates LAT/LONG: 047 55' 99''/122 33' 82''

Location A shelter 

Address 4700 East Marginal Way

County King

Distance to road from gaseous probe (meters) 90

Traffic count (AADT, year) N/A

Groundcover Asphalt 

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 88101 (POC 3)

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Thermo 8500C FEM

Method code 181

FRM/FEM/ARM/other FEM

Collecting Agency Puget Sound Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 8/71 established, 12/09 FEM installed

6/2014 relocated/restarted

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 3

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? No

Is it suitable for comparison against the PM2.5 NAAQS? Yes

Design value N/A*

*Insufficient data.

Purpose: Seattle Duwamish is a neighborhood scale site located in the Duwamish River Valley impacted by 

mobile source diesel emissions and industrial sources. Relocated in 2014 as requested and reported in the 2014 

ANP.
83

Seattle, 10th and Weller (PSCAA)

Site Name Seattle, 10th and Weller

AQS ID 530330030

GPS coordinates LAT/LONG: 047 59' 72"/122 31' 97"

Location A shelter adjacent to I-5 in downtown Seattle

Address 10th and Weller

County King

Distance to road from gaseous probe (meters) 8

Traffic count (AADT, year) 18,400 (2012 WSDOT)

Groundcover Concrete, grass

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 88101

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SPMS

Instrument manufacturer and model Thermo 8500C FEM

Method code 181 

FRM/FEM/ARM/other FEM

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Micro

Monitoring start date 6/14

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 3

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) 3.2

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NO2 NAAQS? Yes

Design value N/A*

*Insufficient data (recently established).

Purpose: Seattle 10th and Weller is an EPA-required, near-road monitoring site adjacent to Interstate 5.
84

Shelton, West Franklin (ORCAA)

Site Name Shelton, West Franklin

AQS ID 530450007

GPS coordinates LAT/LONG: 047 213' 55"/123 100' 81"

Location Rooftop of the fire station

Address 122 West Franklin, Shelton

County Mason

Distance to road from gaseous probe (meters) 20

Traffic count (AADT, year) N/A

Groundcover Asphalt

Statistical Area Not in an MSA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 3)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Olympic Region Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date Relocated 4/11

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 30 from ground 2 from roof

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 10

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 320

Spacing from minor sources No minor sources

Probe material for reactive gases Tygon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 20

Purpose: Shelton is a neighborhood scale site established in 2001 and relocated in April 2011. Shelton is 

impacted by smoke from home heating devices and used for curtailment calls during home heating season.
85

Spokane, Augusta Avenue (SRCAA)

Site Name Spokane, Augusta Avenue

AQS ID 530630021

GPS coordinates LAT/LONG: 047 39' 39"/117 21' 26"

Location Rooftop of SRCAA Offices

Address 3104 E. Augusta Avenue, Spokane

County Spokane

Distance to road from gaseous probe (meters) 27

Traffic count (AADT, year) N/A

Groundcover Membrane roof, asphalt

Statistical Area Spokane, WA

Monitor Information Pollutant, POC 

Parameter code 88101 (POC 3 & 1)

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Thermo 8500C FEM & Thermo 2025 FRM

Method code 181/118

FRM/FEM/ARM/other FEM & FRM

Collecting Agency Spokane Region Clean Air Agency

Analytical Lab Ecology

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 3/09 established, 9/13 FEM installed

Current sampling frequency Continuous & 1/6

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 3

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? Yes

Design value 28

Purpose: Spokane Augusta Avenue is a neighborhood scale site impacted by smoke from home heating devices 

and light industrial sources.
86

Spokane, Monroe Street

Site Name Spokane Monroe

AQS ID 530630047

GPS coordinates LAT/LONG: 047 42' 03"/117 25' 30"

Location Rooftop of the Ecology Eastern Regional 

Office

Address North 4601 Monroe Street, Spokane

County Spokane

Distance to road from gaseous probe (meters) 40

Traffic count (AADT, year) N/A

Groundcover Asphalt

Statistical Area MSA: Spokane, WA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 3)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 1/89 established, 7/03 nephelometer 

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 12 

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 40

Distance to furnace or incinerator flue (meters) 20 (natural gas)

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value N/A*

*Insufficient data.

Purpose: Spokane, Monroe Street is a neighborhood scale site impacted by smoke from home heating devices 

and is representative of the area.
87

Tacoma, Alexander Avenue (PSCAA)

Site Name Tacoma, Alexander Avenue

AQS ID 530530031

GPS coordinates LAT/LONG: 047 15' 56"/122 23' 09"

Location A shelter

Address 2301 Alexander Avenue, Tacoma

County Pierce

Distance to road from gaseous probe (meters) 20

Traffic count (AADT, year) N/A

Groundcover Grass, gravel

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 3)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Puget Sound Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 1/87 established, 1/03 nephelometer 

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated 

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 24

Purpose: Tacoma, Alexander Avenue is a neighborhood scale site impacted by smoke from home heating 

devices and industrial point sources on the Tacoma Tide flats. The site is representative of the NE Tacoma/Fife 

area.
88

Tacoma, South L Street (PSCAA)

Site Name Tacoma, L Street

AQS ID 530530029

GPS coordinates LAT/LONG: 047 11' 11"/122 27' 06"

Location A shelter

Address 7802 South L Street, Tacoma

County Pierce

Distance to road from gaseous probe (meters) 100

Traffic count (AADT, year) N/A

Groundcover Asphalt, grass

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 88101 (POC 3 & 1)

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Thermo 8500C FEM & Thermo 2025 FRM

Method code 181 & 118

FRM/FEM/ARM/other FEM & FRM

Collecting Agency Puget Sound Clean Air Agency

Analytical Lab Ecology

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 10/99 established, 1/10 FEM, 4/12 FRM 

Current sampling frequency Continuous & 1/1

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 3

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 60

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) 2

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? Yes

Design value 30 FEM 

Purpose: Tacoma, L Street is a neighborhood scale site impacted by smoke from home heating devices.

Exceedances: This site has not exceeded the standard in the last three years.
89

Vancouver, NE 84th Avenue (SWCAA)

Site Name Vancouver, NE 84th Avenue

AQS ID 530110024

GPS coordinates LAT/LONG: 45.64' 33''/122 58' 73''

Location at Water Station #15

Address 2795 NE 84th Ave, Vancouver

County Clark

Distance to road from gaseous probe (meters) 170 meters

Traffic count (AADT, year) 8471 (2011)

Groundcover grass

Statistical Area Portland-Vancouver, OR-WA

Monitor Information Pollutant, POC 

Parameter code 88101, POC 3

Basic monitoring objectives(s) NAAQS Compliance

Site type(s) Population exposure/highest conc.

Monitor type(s) SLAMS

Instrument manufacturer and model Thermo 1405F FEM

Method code 581

FRM/FEM/ARM/other FEM

Collecting Agency Southwest Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date December 29, 2014

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 3

Distance from supporting structure (meters) 0.5

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) 25

Distance from trees (meters) 31

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Anodized aluminum

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? FEM was relocated on December 29, 2014

Is it suitable for comparison against the PM2.5 NAAQS? Yes

Design value 30 (Combined Vancouver locations)

Purpose: Vancouver, NE 84th Avenue is a population exposure/highest concentration site impacted by smoke 

from home heating. This site was relocated from Vancouver Van Plaza/CenterPoint Park in December 

2014.
90

Walla Walla, 12th Street

Site Name Walla Walla, 12th Street

AQS ID 530710005

GPS coordinates LAT/LONG: 046 03' 32"/118 21' 06"

Location Rooftop 

Address 200 South 12th, Walla Walla

County Walla Walla

Distance to road from gaseous probe (meters) 25

Traffic count (AADT, year) N/A

Groundcover Asphalt

Statistical Area Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 3)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 5/89 established, 10/02 nephelometer 

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 20

Purpose: Walla Walla is a neighborhood scale small-community site located in Eastern Washington impacted by

smoke from burning activities in the area.
91

Wenatchee, 5thStreet

Site Name Wenatchee 5th Street

AQS ID 530070011

GPS coordinates LAT/LONG: 047 43' 06''/120 34' 19''

Location A shelter at Wenatchee Valley College

Address 1300 Fifth Street

County Chelan

Distance to road from gaseous probe (meters) 33

Traffic count (AADT, year) N/A

Groundcover Gravel, grass

Statistical Area Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 88101 (POC 3)

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Thermo 1405F FEM

Method code 181

FRM/FEM/ARM/other FEM

Collecting Agency Wenatchee

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 12/12

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 3

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 70

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? Yes

Design value N/A*

*Insufficient data.

Purpose: Wenatchee 5th Street was established in late 2012 as a neighborhood scale site to replace Wenatchee

Alaska Way. Wenatchee 5

th is located in a residential area and impacted by smoke from home heating and 

wildfires.
92

Yacolt, Yacolt Road (SWCAA)

Site Name Yacolt, Yacolt Road

AQS ID 530110022

GPS coordinates LAT/LONG: 045 86' 63"/122 40' 88"

Location At Yacolt Primary School

Address 406 West Yacolt Road, Yacolt

County Clark

Distance to road from gaseous probe (meters) 112

Traffic count (AADT, year) N/A

Groundcover Asphalt, grass

Statistical Area Vancouver, WA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 3)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Southwest Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 6/07 

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 15 roof

Distance from supporting structure (meters) 0.5

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 20

Purpose: Yacolt is a neighborhood scale site impacted by smoke from home heating devices and is 

representative of the area.
93

Yakima, South 4th Avenue (YRCAA)

Site Name Yakima, South 4th Avenue

AQS ID 530770009

GPS coordinates LAT/LONG: 046 35' 42"/120 30' 44"

Location Rooftop at Yakima Comprehensive MH

Address 402 South 4th Avenue, Yakima

County Yakima

Distance to road from gaseous probe (meters) 14

Traffic count (AADT, year) N/A

Groundcover Asphalt roof, grass & cement on the ground

Statistical Area Yakima, WA

Monitor Information Pollutant, POC 

Parameter code 88101 (POC 3 & 1)

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Thermo FEM & Thermo 2025

Method code 181 & 118

FRM/FEM/ARM/other FEM & FRM

Collecting Agency Yakima Region Clean Air Agency

Analytical Lab Ecology

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 5/00 established, 10/11 FEM installed

Current sampling frequency Continuous & 1/3

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 3 rooftop, 13 from ground

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) 7

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 34

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? Yes

Design value 32

Purpose: Yakima is a neighborhood scale site impacted by smoke from home heating and burning sources in the 

area.
94

Other – Contracted Local Clean Air Agencies

Table 10. Other - Contracted Local Clean Air Agencies

AQS# Site Name Est. Type Scale

Sampling

Type

Action

for 2015

530570011 Anacortes 10/11 SLAMS Urban Continuous Continue

530090013 Cheeka Peak 5/06 Rural NCore Regional Continuous Continue

530630021 Spokane Augusta 5/10 SLAMS Urban Continuous Continue

Additional Monitors: None.

Note: Ecology provides technical support for Anacortes, Cheeka Peak, and Spokane Augusta ozone. Technical 

support can include repair and calibration, quality assurance, telemetry, and data management.
95

Anacortes, O Street (NWCAA)

Site Name Anacortes, O Street

AQS ID 530570011 

GPS coordinates LAT/LONG: 048 52' 05''/122 61' 42''

Location A trailer

Address 202 O Street, Anacortes

County Skagit

Distance to road from gaseous probe (meters) 15

Traffic count (AADT, year) N/A

Groundcover Asphalt, gravel

Statistical Area MSA: Not an Urban area 

Monitor Information Pollutant, POC 

Parameter code 44201, 42401, 88101 (POC 3)

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturers and model Teledyne-API 400, Teledyne-API T100U 

& Thermo 8500

Method code 087, 560, 181

FRM/FEM/ARM/other FEM

Collecting Agency Northwest Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 10/11

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Ozone seasonal (May-September), Yearround SO2 and PM2.5

Probe height (meters) 3

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) 9.5 residence time needed

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the ozone NAAQS?

Design Value

Yes 

0.042 Ozone/N/A* PM2.5 FEM

*Insufficient data

Purpose: The Northwest Clean Air Agency (NWCAA) uses this site to collect ozone, SO2, and PM2.5

information in its jurisdiction. This site is suitable for comparison to the NAAQS.
96

Cheeka Peak (ORCAA)

Site Name Cheeka Peak

AQS ID 530090013

GPS coordinates LAT/LONG: 048 17'12''/ 124 37' 13'' 

Location A shelter at Cheeka Peak

Address Cheeka Peak

County Clallam

Distance to road from gaseous probe (meters) 7

Traffic count (AADT, year) N/A

Groundcover Shrubs, grass and gravel/dirt

Statistical Area MSA: Not in an MSA

Monitor Information Pollutant, POC 

Parameter code 42101, 42401, 42600+, 88502,

Basic monitoring objectives(s) Research

Site type(s) Background/Regional Transport

Monitor type(s) NCore

Instrument manufacturer and model Teledyne-API 400, RR M903, 

Method code 087, 054, 560, 599, 771

FRM/FEM/ARM/other FEM & Other

Collecting Agency Olympic Region Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Regional

Monitoring start date 5/06

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 5.5

Distance from supporting structure (meters) 0.3

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 21

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) 0.3 to 0.6

Unrestricted airflow (degrees) 175

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) See specific pollutant

Changes within the next 18 months? Potential analyzer upgrades

Is it suitable for comparison against the PM2.5, ozone, 

and Trace gases NAAQS? PM2.5 – No, Ozone – Yes, Trace gases, Yes

Purpose: The Olympic Region Clean Air Agency (ORCAA) is responsible for operation of this Rural NCore 

site.
97

Spokane, Augusta Avenue (SRCAA)

Site Name Spokane Augusta

AQS ID 530630021

GPS coordinates LAT/LONG: 047 39' 39"/117 21' 26"

Location Rooftop of SRCAA Offices

Address 3104 East Augusta Avenue, Spokane

County Spokane

Distance to road from gaseous probe (meters) 27

Traffic count (AADT, year) N/A

Groundcover Membrane roof, Asphalt, 

Statistical Area MSA: Spokane, WA

Monitor Information Pollutant, POC 

Parameter code 44201

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Teledyne-API 400

Method code 087

FRM/FEM/ARM/other FEM

Collecting Agency Spokane Region Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 3/09

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Seasonal (May through September)

Probe height (meters) 2

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) 2.8

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the ozone NAAQS?

Design value

Is it suitable for comparison against the ozone NAAQS? 

Yes

0.061

Purpose: The Spokane Region Clean Air Agency (SRCAA) collects ozone information in its jurisdiction. This 

site is suitable for comparison to the ozone NAAQS.
98

Meteorological Monitoring (Met. 61101, 61102, 62101)

Table 11. Met Monitoring, Parameter Codes 61101, 61102, 62101

AQS# Site Name Est. Type Scale

Sampling

Type

Action

for 2015

530090013 Cheeka Peak 5/06 WS, WD, Ta Regional Continuous Continue

530650004 Colville 3/11 WS, WD, Ta Neighborhood Continuous Continue

530330023 Enumclaw Mud Mtn. 2/04 WS, WD, Ta Urban Continuous Continue

530050005 Kennewick 08/12 WS, WD, Ta Neighborhood Continuous Continue

530330017 North Bend 1/00 WS, WD, Ta Regional Continuous Continue

530270008 Oakville (Tribal) 10/09 WS, WD, Ta Neighborhood Continuous Discontinue

530470013 Omak (Tribal) 10/10 WS, WD, Ta Neighborhood Continuous Continue

530330080 Seattle Beacon Hill 6/79 WS, WD, Ta Urban Continuous Continue

530330030 Seattle 10th & Weller 4/14 WS, WD, Ta Micro Continuous Continue

530630021 Spokane Augusta Ave 7/09 WS, WD, Ta Neighborhood Continuous Continue

530531016 Tacoma Tower 1/91 WS, WD, Ta Micro Continuous Continue

530770015 Toppenish (Tribal) 6/09 WS, WD, Ta Neighborhood Continuous Continue

530110011 Vancouver Blairmount 12/07 WS, WD, Ta Neighborhood Continuous Continue

530070011 Wenatchee Fifth 11/12 WS, WD, Ta Neighborhood Continuous Continue

530770016 White Swan (Tribal) 11/09 WS, WD, Ta Neighborhood Continuous Continue

Additional Monitors: A new meteorological site is anticipated at the Central Washington Comprehensive 

Mental Health Yakima site in 2015 pending landlord approval.

Recommendations/Modifications: EPA has decided to discontinue the Oakville site in 2015 including 

meteorology.
99

Cheeka Peak (ORCAA)

Site Name Cheeka Peak

AQS ID 530090013

GPS coordinates 048 29' 78''/124 62' 49''

Location At Cheeka Peak

Address Cheeka Peak

County Clallam

Distance to road from gaseous probe (meters) Not near a road

Traffic count (AADT, year) N/A

Groundcover Shrubs, grass and gravel/dirt

Statistical Area Not in an MSA

Monitor Information Pollutant, POC 

Parameter code 61101, 61102, 62101

Basic monitoring objectives(s) Research

Site type(s) National Transport

Monitor type(s) SLAMS

Instrument manufacturer and model RM Young 85004

Method code 050, 020, 040

FRM/FEM/ARM/other Other

Collecting Agency Olympic Region Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Regional

Monitoring start date 5/06

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 10

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 40+

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Probe material for reactive gases N/A

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NAAQS? No

Purpose: Collection of wind speed, wind direction, and temperature in support of monitoring at the Rural NCore 

site.
100

Colville, South Oak

Site Name Colville

AQS ID 530650004

GPS coordinates 048 32' 41"/122 54' 13"

Location Rooftop of the Stevens County Courthouse

Address 215 South Oak Street

County Stevens

Distance to road from gaseous probe (meters) N/A

Traffic count (AADT, year) N/A

Groundcover Asphalt, cement, grass

Statistical Area Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 61101, 61102, 62101

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model RM Young 85004

Method code 050, 020, 040

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 3/11

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 10

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 50+

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Probe material for reactive gases N/A

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NAAQS? No

Purpose: Collection of wind speed, wind direction, and temperature in support of PM2.5 and PM10 monitoring at 

Colville.
101

Enumclaw, Mud Mountain Dam 

Site Name Enumclaw, Mud Mountain

AQS ID 530330023

GPS coordinates 047 08' 28"/121 56' 09"

Location At Mud Mountain Dam

Address 30525 SE Mud Mountain Road, Enumclaw

County King

Distance to road from gaseous probe (meters) N/A

Traffic count (AADT, year) N/A

Groundcover Gravel & weeds

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 61101, 61102, 62101

Basic monitoring objectives(s) Public Information

Site type(s) Regional Transport 

Monitor type(s) SLAMS

Instrument manufacturer and model RM Young 85004

Method code 050, 020, 040, 62

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Urban

Monitoring start date 2/04

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Seasonal (May – September)

Probe height (meters) 10

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Probe material for reactive gases N/A

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NAAQS? No

Purpose: Collection of wind speed, wind direction, and temperature in support of seasonal ozone monitoring at 

Enumclaw.
102

Kennewick, Metaline Avenue (BCAA)

Site Name Kennewick, Metaline Avenue

AQS ID 530050002

GPS coordinates 046 13' 06''/119 12' 03''

Location Rooftop of Kennewick Skills Center

Address 5929 West Metaline, Kennewick

County Benton

Distance to road from gaseous probe (meters) N/A

Traffic count (AADT, year) N/A

Groundcover Rooftop-asphalt, ground-grass & asphalt

Statistical Area Richland, Kennewick and Pasco, WA

Monitor Information Pollutant, POC 

Parameter code 61101, 61102, 62101

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model RM Young 85004

Method code 050, 020, 040

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 8/12

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 10

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) 18

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 66

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Probe material for reactive gases N/A

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NAAQS? No

Purpose: Collection of wind speed, wind direction, and temperature in support of PM2.5 and PM10 monitoring at 

Kennewick.
103

North Bend, North Bend Way

Site Name North Bend, North Bend Way

AQS ID 530330017

GPS coordinates 047 29' 23"/121 46' 24"

Location At USDA Forest Service Offices

Address 42404 SE North Bend Way, North Bend

County King

Distance to road from gaseous probe (meters) N/A

Traffic count (AADT, year) N/A

Groundcover Grass

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 61101, 61102, 62101

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model RM Young 85004

Method code 050, 020, 040, 62

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Regional

Monitoring start date 1/00

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 10

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 20

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Probe material for reactive gases N/A

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NAAQS? No

Purpose: Collection of wind speed, wind direction, and temperature in support of PM2.5 and seasonal ozone 

monitoring at North Bend.
104

Oakville, Howanut Drive (Chehalis Tribe) - To be discontinued in 2015

Site Name Oakville, Chehalis Tribe

AQS ID 530270008

GPS coordinates 046 49' 23''/123 09' 40" 

Location A field

Address 252 Howanut Drive, Oakville

County Grays Harbor

Distance to road from gaseous probe (meters) N/A

Traffic count (AADT, year) N/A

Groundcover Grass

Statistical Area Not in an MSA

Monitor Information Pollutant, POC 

Parameter code 61101, 61102, 62101

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model RM Young 85004

Method code 050, 020, 040

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 10/09

Current sampling frequency Continuous

Calculated sampling frequency N/a

Sampling season Year-round

Probe height (meters) 10

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) 3

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Probe material for reactive gases N/A

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NAAQS? No

Purpose: Collection of wind speed, wind direction, and temperature in support of PM2.5 monitoring at Oakville.
105

Omak (Colville Tribe) 

Site Name Omak (Colville Nation)

AQS ID 530470013

GPS coordinates 048. 39' 99''/119 518' 96''

Location A mill yard

Address 8th Avenue and Omak/Okanogan Road

County Okanogan

Distance to road from gaseous probe (meters) N/A

Traffic count (AADT, year) N/A

Groundcover Grass, dirt

Statistical Area Not in an MSA

Monitor Information Pollutant, POC 

Parameter code 61101, 61102, 62101

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model RM Young 85004

Method code 050, 020, 040

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 10/10

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 10

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Probe material for reactive gases N/A

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NAAQS? No

Purpose: Collection of wind speed, wind direction, and temperature in support of PM2.5 monitoring at Omak.
106

Seattle, Beacon Hill

Site Name Seattle, Beacon Hill

AQS ID 530330080

GPS coordinates 047 34' 58"/122 18' 30"

Location At Jefferson Park/reservoir

Address 4103 Beacon Avenue South, Seattle

County King

Distance to road from gaseous probe (meters) N/A

Traffic count (AADT, year) N/A

Groundcover Gravel, grass

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 61101, 61102, 62101

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) NCore

Instrument manufacturer and model RM Young 85004

Method code 050, 020, 040, 062

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Urban

Monitoring start date 6/79

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 10

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Probe material for reactive gases N/A

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NAAQS? No

Purpose: Collection of wind speed, wind direction, and temperature in support of PM2.5, ozone, NCore, toxics 

and speciation monitoring at Seattle Beacon Hill.
107

Seattle, 10th and Weller

Site Name Seattle, 10th and Weller

AQS ID 530330030

GPS coordinates 047 59' 72"/122 31' 97"

Location Adjacent to I-5

Address 10th and Weller, Seattle

County King

Distance to road from gaseous probe (meters) N/A

Traffic count (AADT, year) N/A

Groundcover Cement, grass

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 61101, 61102, 62101

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model RM Young 85004

Method code 050, 020, 040, 062

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Micro

Monitoring start date 4/14

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 10

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Probe material for reactive gases N/A

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NAAQS? No

Purpose: Collection of wind speed, wind direction, and temperature in support of NO2, CO, and PM2.5 near-road 

monitoring at Seattle 10th and Weller.
108

Spokane, Augusta Avenue (SRCAA)

Site Name Spokane, Augusta Avenue

AQS ID 530630021

GPS coordinates 047 39' 39"/ 17 21' 26"

Location Rooftop of Spokane Regional Clean Air 

Agency

Address 3104 East Augusta Avenue, Spokane

County Spokane

Distance to road from gaseous probe (meters) N/A

Traffic count (AADT, year) N/A

Groundcover Membrane roof, asphalt

Statistical Area Spokane, WA

Monitor Information Pollutant, POC 

Parameter code 61101, 61102, 62101

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model RM Young 85004

Method code 050, 020, 040

FRM/FEM/ARM/other Other

Collecting Agency Spokane Region Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 3/09

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 10

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Probe material for reactive gases N/A

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NAAQS? No

Purpose: Collection of wind speed, wind direction and temperature in support of PM2.5, PM10 and Ozone 

monitoring at Spokane Augusta.
109

Tacoma, Tower Drive

Site Name Tacoma, Tower Drive

AQS ID 530531016

GPS coordinates 47.30444''/122.4120

Location At a reservoir 

Address 5225 Tower Drive, Tacoma

County Pierce

Distance to road from gaseous probe (meters) N/A

Traffic count (AADT, year) N/A

Groundcover Gravel

Statistical Area Seattle-Bellevue, Everett, WA

Monitor Information Pollutant, POC 

Parameter code 61101, 61102, 62101

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model RM Young 85004

Method code 050, 020, 040

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Micro

Monitoring start date 1/99

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 10

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Probe material for reactive gases N/A

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NAAQS? No

Purpose: Collection of wind speed, wind direction, and temperature in support of modeling in the Puget Sound.
110

Toppenish, Ward Road (Yakama Nation)

Site Name Toppenish Ward Road

AQS ID 530770015

GPS coordinates 046 23' 07''/120 18' 49''

Location At Toppenish High School

Address 141 Ward Road, Toppenish

County Yakima

Distance to road from gaseous probe (meters) N/A

Traffic count (AADT, year) N/A

Groundcover Grass

Statistical Area Not in an MSA

Monitor Information Pollutant, POC 

Parameter code 61101, 61102, 62101

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model RM Young 85004

Method code 050, 020, 040

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 8/08

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 10

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Probe material for reactive gases N/A

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NAAQS? No

Purpose: Collection of wind speed, wind direction, and temperature in support of PM2.5 monitoring at Toppenish.
111

Vancouver, Blairmont 

Site Name Vancouver, Blairmont

AQS ID 530110011

GPS coordinates 045 36' 37"/122 30' 59"

Location At Blairmont High School

Address 1500 SE Blairmount Drive, Vancouver

County Clark

Distance to road from gaseous probe (meters) N/A

Traffic count (AADT, year) N/A

Groundcover Grass, asphalt

Statistical Area Portland-Vancouver, OR-WA

Monitor Information Pollutant, POC 

Parameter code 61101, 61102, 62101

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model RM Young 85004

Method code 050, 020, 040

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 12/07

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 10

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Probe material for reactive gases N/A

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NAAQS? No

Purpose: Collection of wind speed, wind direction, and temperature in support of seasonal ozone monitoring at 

Vancouver Blairmont.
112

Wenatchee, 5thStreet

Site Name Wenatchee 5th

AQS ID 530070011

GPS coordinates 047 43' 06''/120 34' 19'' 

Location At Wenatchee Valley College

Address 1300 5th Street, Wenatchee

County Chelan

Distance to road from gaseous probe (meters) N/A

Traffic count (AADT, year) N/A

Groundcover Gravel, grass

Statistical Area Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 61101, 61102, 62101

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model RM Young 85004

Method code 050,020,040

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 11/12

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 10

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Probe material for reactive gases N/A

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NAAQS? No

Purpose: Collection of wind speed, wind direction, and temperature in support of PM2.5 monitoring at 

Wenatchee.
113

White Swan (Yakama Nation)

Site Name White Swan

AQS ID 530770016

GPS coordinates 046.37' 54''/120 72' 93''

Location At Mt. Adams School 

Address 621 Signal Peak Road, White Swan

County Yakima

Distance to road from gaseous probe (meters) N/A

Traffic count (AADT, year) N/A

Groundcover Grass

Statistical Area Not in an MSA

Monitor Information Pollutant, POC 

Parameter code 61101, 61102, 62101

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model RM Young 85004

Method code 050,020, 040

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 11/09

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 10

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Probe material for reactive gases N/A

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NAAQS? No

Purpose: Collection of wind speed, wind direction, and temperature in support of contracted local clean air 

agencies.
114

Table 12. Other Contracted Sites USFS

AQS# Site Name Est. Type Scale

Sampling

Type

Action

for 2015

530070007 Chelan 12/02 SPMS Neighborhood Continuous Unknown

530070010 Leavenworth 2/05 SPMS Neighborhood Continuous Continue

530770007 Naches 8/08 SPMS Neighborhood Continuous Unknown

530470009 Twisp 11/03 SPMS Neighborhood Continuous Continue

530470010 Winthrop 11/03 SPMS Neighborhood Continuous Continue 

Additional Monitors: None.

Recommendations/Modifications: None.

Comment: The USFS unexpectedly shut down the Chelan and Naches monitors. It is unknown at this time if they 

will be placed back into operation. *Nephelometers are not EPA equivalent method, nor compliance instruments,

and design values are estimates.
115

Chelan, Woodin Avenue (USFS)

Site Name Chelan, Woodin Avenue

AQS ID 530070007

GPS coordinates LAT/LONG: 047 50' 18''/120 01' 23''

Location At USDAFS Offices

Address 428 West Woodin Avenue, Chelan

County Chelan

Distance to road from gaseous probe (meters) 15

Traffic count (AADT, year) N/A

Groundcover 

Statistical Area MSA: Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 11203

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research Nephelometer

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency USDA Forest Service

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 9/02

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 7

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 10

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? Correlation with an FRM is planned but not 

scheduled

Is it suitable for comparison against the PM2.5

NAAQS? No

Design value N/A

Purpose: This site’s primary purpose is for prescribed burning decision-making by USFS.
116

Leavenworth, Evans Street (USFS)

Site Name Leavenworth, Evans Street

AQS ID 530070010

GPS coordinates LAT/LONG: 047 35' 56''/120 39' 53''

Location At Cascade School District property 

Address 330 Evans Street, Leavenworth

County Chelan

Distance to road from gaseous probe (meters) 10

Traffic count (AADT, year) N/A

Groundcover Grass, asphalt

Statistical Area MSA: Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 88502 (POC3)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency USDA Forest Service

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 2/05

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 12 (rooftop)

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) 5

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 25

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 27* 

Purpose: This site’s primary purpose is for prescribed burning decision-making by USFS.

*Excluding exceedances during wildfire events.
117

Naches, Highway 12 (USFS)

Site Name Naches, Highway 12

AQS ID 530770007

GPS coordinates LAT/LONG: 046 43' 47''/120 42' 13''

Location At the USFS

Address 10237 Highway 12, Naches

County Yakima

Distance to road from gaseous probe (meters) 25

Traffic count (AADT, year) N/A

Groundcover Grass, asphalt

Statistical Area MSA: Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 11203

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency USDA Forest Service

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 4/08

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 7

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 6

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? Correlation with an FRM is planned, not 

scheduled 

Is it suitable for comparison against the PM2.5 NAQAS? No

Design value N/A

Purpose: This site’s primary purpose is for prescribed burning decision-making by USFS.
118

Twisp, Glover Street (USFS)

Site Name Twisp, Glover Street

AQS ID 530470009

GPS coordinates LAT/LONG: 48° 21' 51''/120 12' 40''

Location In a building

Address 118 South Glover Street, Twisp

County Okanogan

Distance to road from gaseous probe (meters) 2

Traffic count (AADT, year) N/A

Groundcover Concrete, asphalt

Statistical Area MSA: Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 3)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency USDA Forest Service

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 11/03

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 25

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 24*

Purpose: This site’s primary purpose is for prescribed burning decision-making by USFS. This site is not 

suitable for comparison to the PM2.5 NAAQS.

*Excluding exceedances during wildfire events.
119

Winthrop, West Chewuch Road (USFS)

Site Name Winthrop, West Chewuch Road

AQS ID 530470010

GPS coordinates LAT/LONG: 048 28' 38''/120 11' 26''

Location At the Methow Valley Ranger Station

Address 24 West Chewuch Road, Winthrop

County Okanogan

Distance to road from gaseous probe (meters) 15

Traffic count (AADT, year) N/A

Groundcover Grass

Statistical Area MSA: Not in an urban area

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 3)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency USDA Forest Service

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 11/03

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 5

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) 1

Distance from trees (meters) 7

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Tefloon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 17*

Purpose: This site’s primary purpose is for prescribed burning decision-making by USFS.

*Excluding exceedances during wildfire events.
120

Other – Contracted Sites Tribal/EPA

Table 13. Other - Contracted Sites Tribal/EPA

AQS# Site Name (Tribe) Est. Type Scale

Sampling

Type

Action

for 2015

530090014 Neah Bay (Makah) 2/10 SPMS Neighborhood Continuous Continue

530270008 Oakville (Chehalis) 1/06 SPMS Neighborhood Continuous Discontinue

530470013 Omak (Colville) 10/10 SPMS Neighborhood Continuous Continue

530270009 Taholah (Quinault) TBD SPMS Neighborhood Continuous TBD

530770015 Toppenish (Yakama) 8/08 SPMS Neighborhood Continuous Continue 

530610011 Tulalip (Tulalip) 12/11 SPMS Neighborhood Continuous Discontinue

530650002 Wellpinit (Spokane) 10/08 SPMS Neighborhood Continuous Continue

530770016 White Swan (Yakama) 1/09 SPMS Neighborhood Continuous Continue

Additional Monitors: None.

Recommendations/Modifications: *Monitoring was suspended at Taholah the fall of 2011. Ecology 

continues to work with the Quinault operator to site and establish a monitor at Taholah. EPA has decided to 

discontinue monitoring at the Oakville and Tulalip sites in 2015.

Comment: Nephelometers are not EPA equivalent method, nor compliance instruments, and design values are 

estimates.
121

Neah Bay, (Makah Nation) 

Site Name Neah Bay, Makah Nation

AQS ID 530090014

GPS coordinates LAT/LONG: 048 22' 19''/124 35' 43''

Location In a building

Address 159 Waada View, Neah Bay

County Clallam

Distance to road from gaseous probe (meters) 10

Traffic count (AADT, year) N/A

Groundcover Cement

Statistical Area MSA: Not in an MSA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 3)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Makah Nation

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 2/10

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 9

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 270

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value N/A*

*Insufficient data

Purpose: This site is used by the Makah Tribe for air quality information on the reservation. The air quality 

information is also used by EPA Region 10 to determine burning curtailment calls in support of the Federal Rules 

for Reservations (FARR).
122

Oakville, Howanut Dr. (Chehalis Tribe) - To be discontinued in 2015

Site Name Oakville, Chehalis Tribe

AQS ID 530270008

GPS coordinates LAT/LONG: 046 49' 23''/123 09' 40"

Location A shelter

Address 252 Howanut Drive, Oakville

County Grays Harbor

Distance to road from gaseous probe (meters) Not near a road

Traffic count (AADT, year) N/A

Groundcover Grass

Statistical Area MSA: Not in an MSA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 3)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Chehalis Tribe

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 1/06

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 5

Distance from supporting structure (meters) 0.3

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 160

Distance to furnace or incinerator flue (meters) 280

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value N/A*

*Insufficient data

Purpose: This site is used by the Chehalis Tribe for air quality information on the reservation. The air quality 

information is also used by EPA Region 10 to determine burning curtailment calls in support of the FARR. 
123

Omak, (Colville Tribe)

Site Name Omak, Colville Tribe

AQS ID 530470013

GPS coordinates LAT/LONG: 048. 39' 99''/119 518' 96''

Location A shelter

Address 8th Ave & Omak/Okanogan Rd

County Okanogan

Distance to road from gaseous probe (meters) N/A

Traffic count (AADT, year) N/A

Groundcover Rock, dirt

Statistical Area MSA: Not in an MSA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 3)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Colville Tribe

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 10/10

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 100

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value N/A*

*Insufficient data.

Purpose: This site is used by the Colville Tribe for air quality information on the reservation. The air quality 

information is also used by EPA Region 10 to determine burning curtailment calls in support of the FARR. 
124

Taholah, TBD - (Quinault Tribe)

Site Name Taholah, Quinault Tribe

AQS ID TBD

GPS coordinates TBD

Location TBD

Address TBD

County Grays Harbor

Distance to road from gaseous probe (meters) TBD

Traffic count (AADT, year) N/A

Groundcover 

Statistical Area MSA: Not in an MSA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 3)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Ecotech M90003/100G

Method code 812

FRM/FEM/ARM/other Other

Collecting Agency Quinault Tribe 

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date TBD

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) TBD

Distance from supporting structure (meters) TBD

Distance from obstructions on roof (meters) TBD 

Distance from obstructions not on roof (meters) TBD 

Distance from trees (meters) TBD 

Distance to furnace or incinerator flue (meters) TBD 

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) TBD

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? Completion of site installation

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value N/A

Purpose: This site is used by the Quinault Tribe for air quality information on the reservation. The air quality 

information is also used by EPA Region 10 to determine burning curtailment calls in support of the FARR.
125

Toppenish, Ward Rd. (Yakama Nation)

Site Name Toppenish, Ward Road

AQS ID 530770015

GPS coordinates LAT/LONG: 046 23' 07''/120 18' 49''

Location At Toppenish High School

Address 141 Ward Road, Toppenish

County Yakima

Distance to road from gaseous probe (meters) 35

Traffic count (AADT, year) N/A

Groundcover Grass

Statistical Area MSA: Not in an MSA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 3)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Yakama Nation

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 8/08

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? Potentially. EPA is considering a PM2.5 FEM

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 40* 

*Excluding exceedances during wildfire events. 

Purpose: This site is used by the Yakama Tribe for air quality information on the reservation. The air quality 

information is also used by EPA Region 10 to determine burning curtailment calls in support of the FARR.
126

Tulalip, Reuben Shelton Dr. (Tulalip Tribe) - To be discontinued in 2015

Site Name Tulalip, Reuben Shelton Drive - Tulalip

AQS ID 530610011

GPS coordinates LAT/LONG: 047 06' 90''/122 27' 50''

Location A shelter

Address 3107 Reuben Shelton Dr., Tulalip

County Snohomish

Distance to road from gaseous probe (meters) 10

Traffic count (AADT, year) N/A

Groundcover Asphalt, grass

Statistical Area MSA: Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 3)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Puget Sound Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 12/11

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2

Distance from supporting structure (meters) 2

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) 30

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value N/A*

*Insufficient data.

Purpose: This site is used by the Tulalip Tribe for air quality information on the reservation. The air quality 

information is also used by EPA Region 10 to determine burning curtailment calls in support of the FARR.
127

Wellpinit, Ford-Wellpinit Rd. (Spokane Tribe) 

Site Name Wellpinit, Ford-Wellpinit Road

AQS ID 530650002

GPS coordinates LAT/LONG: 047 53' 19''/117 59' 19''

Location Rooftop of Spokane Tribal Property

Address 5298 Ford-Wellpinit Road, Wellpinit

County Stevens

Distance to road from gaseous probe (meters) 150

Traffic count (AADT, year) N/A

Groundcover Gravel, grass

Statistical Area MSA: Not in an MSA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 3)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 10/08

Current sampling frequency Continuous 

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value 17

Purpose: This site is used by the Spokane Tribe for air quality information on the reservation. The air quality 

information is also used by EPA Region 10 to determine burning curtailment calls in support of the FARR.
128

White Swan (Yakama Nation)

Site Name White Swan-Yakama 

AQS ID 530770016

GPS coordinates LAT/LONG: 046.37' 54''/120 72' 93''

Location At Mt. Adams School 

Address 621 Signal Peak Rd, White Swan

County Yakima

Distance to road from gaseous probe (meters) 3

Traffic count (AADT, year) N/A

Groundcover Grass

Statistical Area MSA: Not in an MSA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 3)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Yakama Tribe

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood 

Monitoring start date 1/09

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2

Distance from supporting structure (meters) 2

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the PM2.5 NAAQS? No

Design value N/A*

*Insufficient data.

Purpose: This site is used by the Yakama Tribe for air quality information on the Yakama Reservation. The air 

quality information is also used by EPA Region 10 to determine burning curtailment calls in support of the 

FARR.
129

Lead (Pb 14129)

Table 14. Pb Lead, Parameter Code 85129

AQS# Site Name Est. Type Scale

Sampling

Type

Action

for 2015

530330080 Seattle, Beacon Hill 1/13 NCore Urban 1/6 Continue 

Additional Monitors: None.

Recommendations/Modifications: None.

Note: Ecology has EPA Region 10 approval to use the PM10 sampler, which is part of the PM Course sampling 

for lead monitoring. Eastern Research Group (ERG), an EPA contractor, performs the analysis and submits the

data to the Air Quality System (AQS). There is an SOP in Ecology’s Quality Assurance Plan for this instrument.
130

Seattle, Beacon Hill 

Site Name Seattle Beacon Hill

AQS ID 530330080

GPS coordinates LAT/LONG: 047 34' 58"/122 18' 30"

Location At Jefferson Park/reservoir 

Address 4103 Beacon Avenue S., Seattle

County King

Distance to road from gaseous probe (meters) N/A

Traffic count (AADT, year) N/A

Groundcover Gravel, grass

Statistical Area MSA: Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 85129

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model NCore

Method code 907

FRM/FEM/ARM/other Thermo 2025 FRM

Collecting Agency Ecology

Analytical Lab ERG

Reporting Agency ERG

Spatial scale Urban

Monitoring start date 1/13

Current sampling frequency 1/6

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases N/A

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the Pb NAAQS? Yes

Purpose: The purpose of sampling at Seattle Beacon Hill is to meet EPA NAAQS minimum Pb requirements.
131

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. Multi-pollutant air monitoring benefits health assessments 

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

positioned to identify 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.

Table 15. Trace Gas Monitoring CO, SO2, NOy

AQS# Site Name Est. Type Scale

Sampling

Type

Action

for 2015

530330080 Seattle Beacon Hill 3/07 NCore Urban Continuous Continue

530090013 Cheeka Peak 5/06 Rural NCore Regional Continuous Continue

Additional Monitors: None.

Recommendations/Modifications: None. 

Note: Details of trace gas monitoring are found in CO, NO, SO2 sections.
132

Table 16. NCore Parameters Seattle Beacon Hill

Parameter

Parameter

Code

Sampling/

Analysis

Method

Sampling

Schedule

Spatial

Scale

Instrument

Type

Action

for 2015

Ozone 44201 Continuous Urban API 400 E Continue

SO2 trace 42401 Continuous Urban APIT100U Continue

CO trace 42101 Continuous Urban API 300EU Continue

NOy trace 42600 Continuous Urban API200EU Continue

PM2.5 mass 88101 Manual 1/3 Urban Thermo 2025 Continue

PM2.5

continuous 88502 Continuous Urban Thermo FDMS TEOM 1400a + 8500 Continue

PM2.5 

speciation 88502 Continuous& Manual 1/3 Urban Met One SSAS &URG 3000N Carbon Continue

PM10-2.5 86101 Manual 1/3 Urban Thermo 2025 Continue

PM10-2.5 

speciation

Not 

sampling

Not 

sampling

Not 

sampling Urban None TBD

Pb Manual Urban Thermo 2025 Continue

WS & WD 61101/61102 Continuous Urban RM Young 85004 Continue

Ambient 

temperature 62101 Continuous Urban RM Young Platinum probe Continue

Ambient 

pressure

64101 Continuous Urban RM Young Continue

Relative 

humidity 62201 Continuous Urban Rotronics Continue

Precipitation Continuous Urban RM Young 52202 Continue

Purpose: Seattle Beacon Hill is an urban scale site for trace level CO, SO2, NO2, PM2.5, air toxics, speciation,

and other studies. Also measured at Seattle Beacon Hill: PM2.5 chemical speciated particulate matter, volatile 

organic compounds, metals, carbonyls and semi-volatile (PAH). Data from this site also supports Particulate 

Research Center activities.
133

Table 17. NCore Parameters Cheeka Peak

Parameter

Parameter

Code

Sampling/

Analysis

Method

Sampling

schedule

Spatial

Scale

Instrument

Type

Action

for 2015

Ozone 44201 Continuous Continuous Rural API T400 Continue

SO2 trace 42401 Continuous Continuous Rural API T100U Continue

CO trace 42101 Continuous Continuous Rural API T300U Continue

NOy trace 42600 Continuous Continuous Rural API T200U Continue

PM2.5 mass 88101 Manual IMPROVE Rural IMPROVE Continue

PM2.5

continuous 88502 Continuous Continuous Rural

Radiance 

Research

M903 

Nephelometer 

Correlated 

Continue

Light scatter 11203 Continuous Continuous Rural “ “ Continue

Visibility 63101 Continuous Continuous Rural “ “ Continue

PM2.5 

speciation 88502 Manual IMPROVE Rural IMPROVE Continue

PM10-2.5

Not 

sampling

Not 

sampling

Not 

sampling Rural None TBD

PM10-2.5 

speciation

Not 

sampling

Not 

sampling

Not 

sampling Rural None TBD

WS, WD & 

sigma

61101/61102/

61106 Continuous Continuous Rural RM Young 85004 Continue

Ambient 

temperature 62101 Continuous Continuous Rural RM Young Platinum probe Continue

Ambient 

pressure

64101 Continuous Continuous Rural RM Young Continue

Relative 

humidity 62201 Continuous Continuous Rural Rotronics Continue

Purpose: Cheeka Peak is a regional scale rural NCore site in Clallam County. Parameters measured at Cheeka

Peak are: PM2.5, ozone, trace-level CO, SO2, NOy, PM2.5, and meteorology. 
134

Toxics

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

Gas Monitoring Programs, Beacon Hill is also a designated National Air Toxics Trend Site (NATTS). 

The primary objectives of Washington’s NATTS 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.

Table 18. Toxics

AQS# Site Name Est. Type Scale

Sampling

Type

Action

for 2015

530330080 Seattle Beacon Hill 4/97 NCore Urban Manual Continue

Additional Monitors: None.

Recommendations/Modifications: Continue listed site as described. 
135

Seattle, Beacon Hill NCore

Site Name Seattle, Beacon Hill 

AQS ID 530330080

GPS coordinates 047 34' 58"/122 18' 30"

Location At Jefferson Park/reservoir

Address 4103 Beacon Avenue S., Seattle

County King

Distance to road from gaseous probe (meters) 

Traffic count (AADT, year) 

Groundcover Grass, gravel

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code Unknown

Basic monitoring objectives(s) Special Studies

Site type(s) 

Monitor type(s) SPMS

Instrument manufacturer and model Zontech (Zonteck) 910PC VOCs (cans), 925

Carbonyls (tubes)

Method code Unknown

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab ERG

Reporting Agency ERG

Spatial scale Urban

Monitoring start date 4/97

Current sampling frequency 1/3

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 4.65

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) 20

Distance from trees (meters) 20

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases N/A

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NAAQS? No

Purpose: Seattle Beacon Hill is a designated 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. It is currently the only designated urban scale NATTS located in the Pacific Northwest.
136

Speciation

Chemical Speciation Trends Network (CSN) - The PM2.5 Chemical Speciation Program continues to have a 

significant role in the new Monitoring Strategy. Washington’s Speciation Trends Network (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 trends.

 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.

Table 19. Speciation

AQS# Site Name Est. Type Scale

Sampling

Type

Action

for 2014

530330080 Seattle Beacon Hill 4/97 NCore Urban 1/3 Continue

530330030 Seattle 10th & Weller 2015 SPMS Neighborhood 1/6 Continue

530530029 Tacoma L St 2008 SPMS Neighborhood 1/6 Continue

530770009 Yakima 2002 SPMS Neighborhood 1/6 Continue 

Additional Monitors: None.

Recommendations/Modifications: The Marysville site was relocated to Seattle 10th & Weller March 2015.

Speciation Parameter codes: 

88102 Antimony 88126 Iron 88167 Zinc 88370 OC CSN Rev Unadjusted 

88103 Arsenic 88128 Lead 88168 Strontium 88374 OC1 CSN Rev Unadjusted

88104 Aluminum 88131 Indium 88169 Sulfur 88375 OC2 CSN Rev Unadjusted

88107 Barium 88132 Manganese 88176 Rubidium 88376 OC3 CSN Rev Unadjusted

88109 Bromine 88136 Nickel 88180 Potassium 88377 OC4 CSN Rev Unadjusted

88110 Cadmium 88140 Magnesium 88184 Sodium 88378 OP CSN Rev Unadjusted 

88111 Calcium 88152 Phosphorus 88185 Zirconium 88380 EC CSN Rev Unadjusted 

88112 Chromium 88154 Selenium 88301 Ammonium Ion 88383 EC1 CSN Rev Unadjusted

88113 Cobalt 88160 Tin 88302 Sodium Ion 88384 EC2 CSN Rev Unadjusted

88114 Copper 88161 Titanium 88303 Potassium Ion 88385 EC3 CSN Rev Unadjusted

88115 Chlorine 88164 Vanadium 88306 Total Nitrate 88388 OP CSN Rev Unadjusted 

88117 Cerium 88165 Silicon 88355

OC CSN Rev 

Unadj 88403 Sulfate

88118 Cesium 88166 Silver 88357

EC CSN Rev 

Unadj 88502 PM2.5 Speciation Mass
137

Seattle, Beacon Hill NCore

Site Name Seattle, Beacon Hill

AQS ID 530330080

GPS coordinates 047 34' 58"/122 18' 30"

Location At Jefferson Park/reservoir 

Address 4103 Beacon Avenue S., Seattle

County King

Distance to road from gaseous probe (meters) 10

Traffic count (AADT, year) 12,700 (2012 WSDOT

Groundcover Gravel, grass

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code See list above

Basic monitoring objectives(s) Special Studies

Site type(s) Population Exposure

Monitor type(s) NCore

Instrument manufacturer and model URG 3000N, Met One SASS (Super SASS)

Method code 

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab RTI

Reporting Agency Ecology

Spatial scale Urban

Monitoring start date 3/07

Current sampling frequency 1/3

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) 20

Distance from trees (meters) 20

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases N/A

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NAAQS? No

Purpose: Provide long-term data to establish and track trends, determine spatial and temporal differences of 

PM2.5 composition between cities and regions over time, provide representative PM2.5 speciation data to support 

exposure assessments, and determine where PM2.5 emissions come from.

Supplemental Speciation Sites: In addition to the Seattle Beacon Hill speciation trends network site, 

Washington State operates three supplemental speciation sites. Supplemental sites are located at:
138

Seattle, 10th & Weller 

Site Name Seattle, 10th & Weller

AQS ID 530330030

GPS coordinates LAT/LONG: 047 59' 72"/122 31' 97"

Location Adjacent to Interstate 5 in Downtown Seattle

Address 10th & Weller

County King

Distance to road from gaseous probe (meters) 6

Traffic count (AADT, year) 146,000 I-5 (2012 WSDOT)

Groundcover Concrete, Grass

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code See list above

Basic monitoring objectives(s) Special Studies

Site type(s) Population Exposure

Monitor type(s) SPMS

Instrument manufacturer and model URG 3000N, Met One SASS

Method code 

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab RTI

Reporting Agency RTI

Spatial scale Neighborhood

Monitoring start date 3/15

Current sampling frequency 1/6

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 3

Distance from supporting structure (meters) 3 

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases Teflon

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NAAQS? No

Purpose: Seattle 10th & Weller is Washington’s primary near-road monitoring site. Provide long-term data to 

establish and track trends, determine spatial and temporal differences of PM2.5 composition between cities and 

regions over time, provide representative PM2.5 speciation data to support exposure assessments, and determine 

where PM2.5 emissions come from.
139

Tacoma, South L Street (PSCAA)

Site Name Tacoma L Street

AQS ID 530530029

GPS coordinates 047 11' 11"/122 27' 06"

Location A shelter

Address 7802 South L Street, Tacoma

County Pierce

Distance to road from gaseous probe (meters) 100

Traffic count (AADT, year) N/A

Groundcover Asphalt, grass

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code See list above

Basic monitoring objectives(s) Special Studies

Site type(s) Population Exposure

Monitor type(s) SPMS

Instrument manufacturer and model URG 3000N, Met One SASS 

Method code 

FRM/FEM/ARM/other Other

Collecting Agency Ecology

Analytical Lab RTI

Reporting Agency RTI

Spatial scale Neighborhood

Monitoring start date 11/06

Current sampling frequency 1/6

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases N/A

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NAAQS? No

Purpose: Provide long-term data to establish and track trends, determine spatial and temporal differences of 

PM2.5 composition between cities and regions over time, provide representative PM2.5 speciation data to support 

exposure assessments, and determine where PM2.5 emissions come from.
140

Yakima, S. 4th (YRCAA)

Site Name Yakima S. 4th (YRCAA)

AQS ID 530770009

GPS coordinates 046 35' 42"/120 30' 44"

Location At Yakima Comprehensive M H 

Address 402 South 4th Avenue, Yakima

County Yakima

Distance to road from gaseous probe (meters) 14

Traffic count (AADT, year) N/A

Groundcover Asphalt roof, grass & cement on the ground

Statistical Area Yakima, WA

Monitor Information Pollutant, POC 

Parameter code See list above

Basic monitoring objectives(s) Special Studies

Site type(s) Population Exposure

Monitor type(s) SPMS

Instrument manufacturer and model URG 3000N, Met One SASS 

Method code 

FRM/FEM/ARM/other Other

Collecting Agency Yakima Region Clean Air Agency

Analytical Lab RTI

Reporting Agency RTI

Spatial scale Neighborhood

Monitoring start date 11/07

Current sampling frequency 1/6

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 2

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) N/A

Distance from trees (meters) N/A

Distance to furnace or incinerator flue (meters) N/A

Distance between collocated monitors (meters) N/A

Unrestricted airflow (degrees) 360

Spacing from minor sources No minor sources

Probe material for reactive gases N/A

Residence time for reactive gases (seconds) N/A

Changes within the next 18 months? None anticipated

Is it suitable for comparison against the NAAQS? No

Purpose: Provide long-term data to establish and track trends, determine spatial and temporal differences of 

PM2.5 composition between cities and regions over time, provide representative PM2.5 speciation data to support 

exposure assessments, and determine where PM2.5 emissions come from.
141

APPENDIX A. EPA APPENDIX D FORMS
142

PART 58 APPENDIX D SITE EVALUATION FORM FOR CARBON MONOXIDE (CO)

SITE NAME_______All_________________SITE ADDRESS_________________________________________________

AQS ID______________________ EVALUATION DATE______________EVALUATOR__________________________

APPLICABLE 

SECTION

REQUIREMENT OBSERVED CRITERIA MET?

YES NO N/A

4.2.1(a) One CO monitor is required to operate collocated with one required nearroad NO2 monitor in CBSAs having a population of 1,000,000 or more 

persons. If a CBSA has more than one required near-road NO2 monitor, 

only one CO monitor is required to be collocated with a near-road NO2

monitor within that CBSA.

 Y

4.2.2(a) Has the EPA Regional Administrator required additional CO monitoring 

stations above the minimum number of monitors required in 4.2.1? If so, 

note location in comment field.

 N

Comments: 

MSA Description1 CBSA population2, 3 Minimum required 

number of SLAMS 

CO sites 

Present number of 

SLAMS CO sites 

in MSA

Seattle-Tacoma-Bellevue, WA NCore & 

Near Road

3,439,809 1 2

Spokane, WA 527,753 1 1

Cheeka Peak (not in an MSA) NCore 1 1

1

see http://www2.census.gov/econ/susb/data/msa_codes_2007_to_2011.txt

2Minimum monitoring requirements apply to the Core Based statistical area (CBSA). CBSA includes both 

metropolitan and micropolitan statistical areas.

3

Population based on latest available census figures.
143

PART 58 APPENDIX D SITE EVALUATION FORM FOR PM10

SITE NAME______All______________ SITE ADDRESS___________________________________________________

AQS ID______________________ EVALUATION DATE_____________ EVALUATOR__________________________

APPLICABLE 

SECTION

REQUIREMENT CRITERIA MET?

YES NO N/A

4.6(a) Table D-4 indicates the approximate number of permanent stations required in MSAs to

characterize national and regional PM10 air quality trends and geographical patterns. Use the 

form below and Table D-4 to verify if your PM10 network has to appropriate number of 

samplers.

 Y *

Comments: * Seattle-Tacoma-Bellevue, WA has fewer PM10 monitors than required by CFR. The total numbers of PM10

analyzers/samplers in this area was reduced through previous Annual Network Plans and approved by EPA. 

MSA Description1 MSA population2, 3 Minimum required 

number of PM10

stations (from Table D4)

Present number of 

PM10 stations in MSA

Seattle-Tacoma-Bellevue, WA 3,439,809 2-4 1

Spokane, WA 527,753 1-2 1

Kennewick, WA 253,340 1-2 1

Yakima, WA 243,231 1-2 1

1

see http://www2.census.gov/econ/susb/data/msa_codes_2007_to_2011.txt

2Minimum monitoring requirements apply to the Metropolitan statistical area (MSA). CBSA includes both MSAs and 

micropolitan statistical areas.

3

Population based on latest available census figures.

Table D-4 of Appendix D to Part 58 – PM10 Minimum Monitoring Requirements

MSA population1, 2 High concentration2 Medium concentration3 Low concentration4 5

>1 million 6-10 4-8 2-4

500K to 1 million 4-8 2-4 1-2

250K to 500K 3-4 1-2 0-1

100K to 250K 1-2 0-1 0
144

PART 58 APPENDIX D SITE EVALUATION FORM FOR NITROGEN DIOXIDE (NO2)

SITE NAME_____All_____________________ SITE ADDRESS_____________________________________________

AQS ID______________________ EVALUATION DATE____________ EVALUATOR__________________________

APPLICABLE 

SECTION

REQUIREMENT CRITERIA MET?

YES NO N/A

4.3.2(a) Near-road NO2 Monitors: One microscale near-road NO2 monitoring station in each CBSA

with a population of 500,000 or more persons.

 Y

4.3.2(a) Near-road NO2 Monitors: An additional near-road NO2monitoring station is required for any 

CBSA with a population of 2,500,000 persons, or in any CBSA with a population of 500,000 

or more persons that has one or more roadway segments with 250,000 or greater AADT count.

 Y

4.3.2(b) Near-road NO2 Monitors: Measurements at required near-road NO2 monitor sites utilizing 

chemiluminescence FRMs must include at a minimum: NO, NO2, and NOX

 Y

4.3.3(a) Area-wide NO2 Monitoring: One monitoring station in each CBSA with a population of 

1,000,000 or more persons to monitor a location of expected highest NO2 concentrations 

representing the neighborhood or larger spatial scales.

 Y

Comments: Washington’s second near-road site is planned Tacoma, WA. The Tacoma location is near the intersection of 

Interstate 5 and 36th Street. This site will be located on Jennie Reed Elementary School property, part of the Tacoma School 

District. It is expected to be operational January 1, 2016.

Table 1

CBSA Description1 CBSA 

population2, 3

Required 

number of 

Near-road 

NO2 sites

Present 

number of 

Near-road 

NO2 sites

Required 

number of 

Area-wide 

NO2 sites

Present 

number of 

Area-wide 

NO2 sites

Seattle-Tacoma-Bellevue, WA (see 

comments)

3,439,809 2 1 1 1

Cheeka Peak (not in an MSA) NCore

1

see http://www2.census.gov/econ/susb/data/msa_codes_2007_to_2011.txt

2Minimum monitoring requirements apply to the Core Based statistical area (CBSA). CBSA includes both metropolitan and 

micropolitan statistical areas.

3

Population based on latest available census figures.
145

PART 58 APPENDIX D SITE EVALUATION FORM FOR PM2.5

STATE___WA_____ AGENCY___ECOLOGY________AQS AGENCY CODE_____ECOLOGY___________________

EVALUATION DATE_______________ EVALUATOR______________________________________________________

APPLICABLE 

SECTION

REQUIREMENT CRITERIA 

MET?

YES NO N/A

4.7.1(a) States, and where applicable local agencies must operate the minimum number of required 

PM2.5 SLAMS sites listed in Table D-5 of this appendix. Use the form below and Table D-5 to 

verify if each of your MSAs has the appropriate number of SLAMS FRM/FEM/ARM 

samplers.

 Y

4.7.1(b) Each required SLAMS FRM/FEM/ARM monitoring stations or sites must be sited to represent 

area-wide air quality in the given MSA (typically neighborhood or urban spatial scale, though

micro-or middle-scale okay if it represent many such locations throughout the MSA).

 Y

4.7.1(b)(1) At least one SLAMS FRM/FEM/ARM monitoring station is to be sited at neighborhood or 

larger scale in an area of expected maximum concentration for each MSA where monitoring is 

required by 4.7.1(a).

 Y

4.7.1(b)(2) For CBSAs with a population of 1,000,000 or more persons, at least one FRM/FEM/ARM 

PM2.5 monitor is to be collocated at a near-road NO2 station.

 Y*

4.7.1(b)(3) For MSAs with additional required SLAMS sites, a FRM/FEM/ARM monitoring station is to 

be sited in an area of poor air quality.

 Y

4.7.2 Each State must operate continuous PM2.5 analyzers equal to at least one-half (round up) the 

minimum required sites listed in Table D-5 of this appendix. At least one required continuous 

analyzer in each MSA must be collocated with one of the required FRM/FEM/ARM monitors, 

unless at least one of the required FRM/FEM/ARM monitors is itself a continuous FEM or 

ARM monitor, in which case no collocation requirement applies.

 Y

4.7.3 Each State shall install and operate at least one PM2.5 site to monitor for regional background 

and at least one PM2.5 site to monitor regional transport (note locations in comment field). 

Non-reference PM2.5 monitors such as IMPROVE can be used to meet this requirement.

 Y**

4.7.4 Each State shall continue to conduct chemical speciation monitoring and analyses at sites 

designated to be part of the PM2.5 Speciation Trends Network (STN).

Y***

Comments: 

*A PM2.5 FEM is located at the Seattle 10th & Weller near-road site.

** Regional background site: Seattle Beacon Hill. Regional Transport site: North Bend.

***STN site: Seattle Beacon Hill
146

MSA 

Description1

MSA 

population2,3

Design 

Value for 

years 2012-

2014

Minimum required 

number of PM2.5

SLAMS 

FRM/FEM/ARM 

sites (from Table D5)

Present number of 

PM2.5 SLAMS 

FRM/FEM/ARM 

sites in MSA

Present 

number of 

continuous 

PM2.5

FEM/ARM 

analyzers in 

MSA

Present 

number of 

continuous 

PM2.5 STN 

analyzers in 

MSA

SeattleTacomaBellevue, 

WA 

3,439,809 30.0 FEM 3 5 5 1

Spokane, 

WA

527,753 28.0 FEM 1 1 1 0

Kennewick, 

WA

253,340 Insufficient 

data

0 0 0 0

OlympiaTumwater, 

WA

252,264 28.0 Neph 0 0 0 0

BremertonSilverdale, 

WA

251,133 Insufficient 

data

0 0 1 0

Yakima, WA 243,231 32.0 FEM 0 1 0

Mt. VernonAnacortes 

WA

116,001 10.0 Neph 0 0 0 0

1

see http://www2.census.gov/econ/susb/data/msa_codes_2007_to_2011.txt)

2Minimum monitoring requirements apply to the metropolitan statistical area (MSA). CBSA includes both MSAs and micropolitan 

statistical areas.

3

Population based on latest available census figures.

Table D-5 of Appendix D to Part 58 – PM2.5 Minimum Monitoring Requirements

MSA population1, 2 Most recent 3-year design value ≥85% 

of any PM2.5 NAAQS3

Most recent 3-year design value <85% 

of any PM2.5 NAAQS3, 4

>1 million 3 2

500K to 1 million 2 1

50K to <500K51 0

1Minimum monitoring requirements apply to the Metropolitan statistical area (MSA).

2

Population based on latest available census figures. https://www.census.gov/

3The PM2.5 National Ambient Air Quality Standards (NAAQS) levels and forms are defined in 40 CFR part 50.

4These minimum monitoring requirements apply in the absence of a design value.

5Metropolitan statistical areas (MSA) must contain an urbanized area of 50,000 or more population.
147

PART 58 APPENDIX D SITE EVALUATION FORM FOR OZONE

STATE___WA_______ AGENCY_____ECOLOGY___________________________AQS AGENCY CODE__________

EVALUATION DATE_______________ 

EVALUATOR______________________________________________________

APPLICABLE 

SECTION

REQUIREMENT CRITERIA MET?

YES NO N/A

4.1(b) At least one O3 site for each MSA, or CSA if multiple MSAs are involved, must be designed to 

record the maximum concentration (note location in comment field).

 Y

4.1(c) The appropriate spatial scales for O3 sites are neighborhood, urban, and regional (note 

deviations in comment field).

 Y

4.1(f) Confirm that the monitoring agency consulted with EPA R10 when siting the maximum O3

concentration site.

 N

4.1(i) O3

is being monitored at SLAMS monitoring sites during the “ozone season” as specified in 

Table D-3 of Appendix D to Part 58.

 Y

Comments:

MSA population1, 2 Most recent 3-year

design value 

concentrations ≥85%

of any O3 NAAQS3

Most recent 3-

year

design value

concentrations

<85% of any O3

NAAQS3, 4

>10 million 4 2

4-10 million 3 1

350,000-<4 million 2 1

50,000-<350,00051 0

1Minimum monitoring requirements apply to the Metropolitan statistical 

area (MSA). CBSA includes both MSAs and micropolitan statistical 

areas.

2

Population based on latest available census figures.

3The ozone (O3) National Ambient Air Quality Standards (NAAQS) 

levels 

and forms are defined in 40 CFR part 50.

4These minimum monitoring requirements apply in the absence of a 

design 

value.

5Metropolitan statistical areas (MSA) must contain an urbanized area of 

50,000 or more population.

Table D-2 of Appendix D to Part 58 - SLAMS O3 Monitoring 

Minimum Requirements

MSA 

Descriptiona

MSA 

population1, 2

Minimum required 

number of SLAMS 

O3 sites (from Table 

D-2)

Present 

number

of SLAMS O3

sites in CBSA

SeattleTacoma 

Bellevue, WA

3,439,809 3 6

Spokane, WA 527,753 2 2

a

see http://www2.census.gov/econ/susb/data/msa_codes_2007_to_2011.txt

Table D-3 of Appendix D to Part 58—

Ozone Monitoring Season by State

State Begin month End Month

Alaska April October

Idaho May September

Oregon May September

Washington May September
148

PART 58 APPENDIX D SITE EVALUATION FORM FOR SO2

STATE___WA_______ AGENCY______ECOLOGY_________________________AQS AGENCY CODE__________

EVALUATION DATE____________ EVALUATOR______________________________________________________

APPLICABLE 

SECTION

REQUIREMENT CRITERIA MET?

YES NO N/A

4.4.1 State and, where appropriate, local agencies must operate a minimum number of required SO2

monitoring sites (based on PWEI calculation specified in 4.4.2 – use Table 1 and 2 below to 

determine minimum requirement for each CBSA)

 Y

4.4.2(a)(1) Is the monitor sited within the boundaries of the parent CBSA and is it one of the following 

site types: population exposure, highest concentration, source impacts, general background, or 

regional transport?

 Y

4.4.3(a) Has the EPA Regional Administrator required additional SO2 monitoring stations above the 

minimum number of monitors required in 4.4.2? If so, note location in comment field.

 N

4.4.5(a) Is your agency counting an existing SO2 monitor at an NCore site in a CBSA with a minimum 

monitoring requirement?

 Y

Comments:

Table 1.

CBSA Description1 CBSA 

population1, 2

total amount 

of SO2 in 

tons per year 

emitted 

within the 

CBSA (use 

2008 NEI4)

PWEI 

(population 

x total 

emissions ÷ 

1,000,000)

Minimum 

required number 

of SO2 monitors 

in CBSA (see 

Table 2 below)

Present 

number of 

SO2 monitors 

in CBSA

Seattle-Tacoma-Bellevue, WA NCore 3,439,809 13,671 47,026 1 1

Cheeka Peak (not in an MSA) NCore 1 1

1

see http://www.census.gov/population/metro/data/def.html

2Minimum monitoring requirements apply to the Core Based statistical area (CBSA). CBSA includes both metropolitan and 

micropolitan statistical areas.

3

Population based on latest available census figures.

4

see http://www.epa.gov/ttn/chief/eiinformation.html

Table 2. Minimum SO2 Monitoring Requirements (Section 4.4.2 of App D to Part 58)

PWEI (Population weighted Emission Index) Value Require number of SO2 monitors

>= 1,000,000 3

>= 100,000 but < 1,000,000 2

>= 5,000 but < 100,000 1
149

APPENDIX B. EPA APPENDIX E FORMS
150

PART 58 APPENDIX E SITE EVALUATION FORM FOR CO

SITE NAME______All______________________ SITE ADDRESS__________________________________________________

AQS ID______________________ EVALUATION DATE_________________ EVALUATOR__________________________

APPLICABLE 

SECTION

REQUIREMENT OBSERVED CRITERIA MET?

YES NO N/A

2. HORIZONTAL 

AND VERTICLE 

PLACEMENT

For neighborhood or larger spatial scale sites the probe must be located 2-15 

meters above ground level and must be at least 1 meter vertically or 

horizontally away from any supporting structure, walls, etc., and away from 

dusty or dirty areas. If located near the side of a building or wall, then locate 

on the windward side relative to the prevailing wind direction during the 

season of highest concentration potential.

 Y

3. SPACING FROM 

MINOR SOURCES

(a) For neighborhood scale avoid placing the monitor probe inlet near local, 

minor sources. The source plume should not be allowed to inappropriately 

impact the air quality data collected at a site.

 Y

4. SPACING FROM 

OBSTRUCTIONS

(a) To avoid scavenging, the probe inlet must have unrestricted airflow and 

be located away from obstacles. The separation distance must be at least 

twice the height that the obstacle protrudes above the probe inlet (exception 

is street canyon or source-oriented sites where buildings and other structures 

are unavoidable).

 Y

(b) The probe inlet must have unrestricted airflow in an arc of at least 180 

degrees. This arc must include the predominant wind direction for the 

season of greatest pollutant concentration potential.

 Y

5. SPACING FROM 

TREES

(a) To reduce possible interference the probe inlet must be at least 10 meters 

or further from the drip line of trees.

 Y

(c) No trees should be between source and probe inlet for microscale sites. Y

6. SPACING FROM 

ROADWAYS

2. (b) Microscale CO monitor probes in downtown areas or urban street 

canyon locations shall be located a minimum distance of 2 meters and a 

maximum distance of 10 meters from the edge of the nearest traffic lane.

 Y

2. (c) Microscale CO monitor inlet probes in downtown areas or urban 

street canyon locations shall be located at least 10 meters from an 

intersection and preferably at a midblock location.

 N/A

9. PROBE 

MATERIAL & 

RESIDENCE TIME 

(a) Sampling train material must be FEP Teflon or borosilicate glass (e.g., 

Pyrex) for reactive gases. 

 Y

(c) Sampling probes for reactive gas monitors at NCore must have a sample 

residence time less than 20 seconds.

 Y

Are there any changes that might compromise original siting criteria? If so, provide detail in comment section. N

Other Comments: Please see Carbon Monoxide section for detail on individual sites. 
151

1. Distance from the edge of the nearest traffic lane. The distance for 

intermediate traffic counts should be interpolated from the table 

values based on the actual traffic count.

Roadway average daily traffic,

vehicles per day

Minimum

distance1

(meters)

≤10,000 10

15,000 25

20,000 45

30,000 80

40,000 115

50,000 135

≥60,000 150
152

PART 58 APPENDIX E SITE EVALUATION FORM FOR PM2.5, PM10, PM10-2.5,and Pb

SITE NAME______All___________________ SITE ADDRESS___________________________________________________

AQS ID______________________ EVALUATION DATE_________________ EVALUATOR__________________________

APPLICABLE 

SECTION

REQUIREMENT OBSERVED CRITERIA MET?

YES NO N/A

2. HORIZONTAL 

AND VERTICLE 

PLACEMENT

2-15 meters above ground level for neighborhood or larger spatial scale, 2-

7 meters for microscale spatial scale sites and middle spatial scale PM10-2.5 

sties. 1 meter vertically or horizontally away from any supporting 

structure, walls, etc., and away from dusty or dirty areas. If located near the 

side of a building or wall, then locate on the windward side relative to the 

prevailing wind direction during the season of highest concentration 

potential.

 Y

3. SPACING FROM 

MINOR SOURCES

(a) For neighborhood or larger spatial scales avoid placing the monitor near 

local, minor sources. The source plume should not be allowed to 

inappropriately impact the air quality data collected at a site. Particulate 

matter sites should not be located in an unpaved area unless there is 

vegetative ground cover year round.

 Y

4. SPACING FROM 

OBSTRUCTIONS

(a) To avoid scavenging, the inlet must have unrestricted airflow and be 

located away from obstacles. The separation distance must be at least twice 

the height that the obstacle protrudes above the probe inlet. 

 Y

(b) The inlet must have unrestricted airflow in an arc of at least 180 

degrees. This arc must include the predominant wind direction for the 

season of greatest pollutant concentration potential. For particle sampling, a 

minimum of 2 meters of separation from walls, parapets, and structures is 

required for rooftop site placement.

 Y

5. SPACING FROM 

TREES

(a) To reduce possible interference the inlet must be at least 10 meters or 

further from the drip line of trees.

 Y

(c) No trees should be between source and probe inlet for microscale sites. Y

6. SPACING FROM 

ROADWAYS

Spacing from roadways is dependent on the spatial scale and ADT count. 

See section 6.3(b) and figure E-1 for specific requirements.

 Y

Are there any changes that might compromise original siting criteria? N

Other Comments: Please see the PM2.5, PM10, PM10-2.5 and Pb sections for individual detail. 
153

1Distance from the edge of the nearest traffic lane. The 

distance for intermediate traffic counts should be 

interpolated from the table values based on the actual 

traffic count.

2Applicable for ozone monitors whose placement has 

not already been approved as of December 18, 2006.

PART 58 APPENDIX E SITE EVALUATION FORM FOR NO, NOx, NO2, and NOy

SITE NAME_____All____________________ SITE ADDRESS___________________________________________________

AQS ID______________________ EVALUATION DATE_________________ EVALUATOR__________________________

APPLICABLE 

SECTION

REQUIREMENT OBSERVED CRITERIA MET?

YES NO N/A

2. HORIZONTAL 

AND VERTICLE 

PLACEMENT

For neighborhood or larger spatial scale sites the probe must be 

located 2-15 meters above ground level and must be at least 1 meter 

vertically or horizontally away from any supporting structure, walls, 

etc., and away from dusty or dirty areas. Microscale near-road NO2

monitoring sites are required to have sampler inlets between 2 and 7 

meters above ground level. If located near the side of a building or 

wall, then locate the sampler probe on the windward side relative to 

the prevailing wind direction during the season of highest 

concentration potential.

 Y

3. SPACING FROM 

MINOR SOURCES

(a) For neighborhood scale and larger avoid placing the monitor probe 

inlet near local, minor sources. The source plume should not be

allowed to inappropriately impact the air quality data collected at a 

site. 

 Y

4. SPACING FROM 

OBSTRUCTIONS

(a) To avoid scavenging, the probe inlet must have unrestricted 

airflow and be located away from obstacles. The separation distance 

must be at least twice the height that the obstacle protrudes above the 

probe inlet. 

 Y

(b) The probe inlet must have unrestricted airflow in an arc of at least 

180 degrees. This arc must include the predominant wind direction 

for the season of greatest pollutant concentration potential.

 Y

(d) For near-road NO2 monitoring stations, the monitor probe shall 

have an unobstructed air flow, where no obstacles exist at or above 

the height of the monitor probe, between the monitor probe and the 

outside nearest edge of the traffic lanes of the target road segment.

 Y

5. SPACING FROM 

TREES

(a) To reduce possible interference the probe inlet must be at least 10 

meters or further from the drip line of trees.

 Y

(c) No trees should be between source and probe inlet for microscale 

sites.

 Y

6. SPACING FROM 

ROADWAYS

See spacing requirements table below Y

9. PROBE 

MATERIAL & 

RESIDENCE TIME 

(a) Sampling train material must be FEP Teflon or borosilicate glass 

(e.g., Pyrex). 

 Y

(c) Sampling probes for reactive gas monitors at NCore and at NO2

sites must have a sample residence time less than 20 seconds.

 Y

Are there any changes that might compromise original siting criteria? If so, provide detail in comment 

section.

 N

Other Comments: Please see the NO, NOX, NO2 and NOy section for detail on individual sites.

Roadway

average daily traffic,

vehicles per day

Minimum

distance1

(meters)

Minimum

distance1, 2

(meters)

≤1,000 10 10

10,000 10 20

15,000 20 30

20,000 30 40

40,000 50 60

70,000 100 100

≥110,000 250 250
154

PART 58 APPENDIX E SITE EVALUATION FORM FOR SO2

SITE NAME_____All_____________________ SITE ADDRESS______________________________________________

AQS ID______________________ EVALUATION DATE_______________EVALUATOR__________________________

APPLICABLE 

SECTION

REQUIREMENT OBSERVED CRITERIA 

MET?

YES NO N/A

2. HORIZONTAL 

AND VERTICLE 

PLACEMENT

2-15 meters above ground level. 1 meter vertically or horizontally away 

from any supporting structure, walls, etc., and away from dusty or dirty 

areas. If located near the side of a building or wall, then locate on the 

windward side relative to the prevailing wind direction during the season 

of highest concentration potential.

 Y

3. SPACING FROM 

MINOR SOURCES

(a) For neighborhood scale avoid placing the monitor probe inlet near 

local, minor sources. The source plume should not be allowed to 

inappropriately impact the air quality data collected at a site.

 Y

4. SPACING FROM 

OBSTRUCTIONS

(a) To avoid scavenging, the probe inlet must have unrestricted airflow 

and be located away from obstacles. The separation distance must be at 

least twice the height that the obstacle protrudes above the probe inlet. 

 Y

(b) The probe inlet must have unrestricted airflow in an arc of at least 

180 degrees. This arc must include the predominant wind direction for 

the season of greatest pollutant concentration potential.

 Y

5. SPACING FROM 

TREES

(a) To reduce possible interference the probe inlet must be at least 10 

meters or further from the drip line of trees.

 Y

(c) No trees should be between source and probe inlet for microscale 

sites.

 Y

6. SPACING FROM 

ROADWAYS

There are no roadway spacing requirements for SO2. 

9. PROBE 

MATERIAL & 

RESIDENCE TIME 

(a) Sampling train material must be FEP Teflon or borosilicate glass 

(e.g., Pyrex). 

 Y

(c) Sampling probes for reactive gas monitors at NCore must have a 

sample residence time less than 20 seconds.

 Y

Are there any changes that might compromise original siting criteria? If so, provide detail in comment section. N

Other Comments: Please see the SO2 section for detail on individual sites. 
155

PART 58 APPENDIX E SITE EVALUATION FORM FOR O3

SITE NAME____All_____________________ SITE ADDRESS_______________________________________________

AQS ID______________________ EVALUATION DATE________________EVALUATOR_______________________ 

APPLICABLE 

SECTION

REQUIREMENT OBSERVED CRITERIA 

MET?

YES NO N/A

2. HORIZONTAL 

AND VERTICLE 

PLACEMENT

2-15 meters above ground level. 1 meter vertically or horizontally away 

from any supporting structure, walls, etc., and away from dusty or dirty 

areas. If located near the side of a building or wall, then locate on the 

windward side relative to the prevailing wind direction during the 

season of highest concentration potential.

 Y

3. SPACING FROM 

MINOR SOURCES

(a) For neighborhood scale avoid placing the monitor probe inlet near 

local, minor sources. The source plume should not be allowed to 

inappropriately impact the air quality data collected at a site.

 Y

(b) To minimize scavenging effects, the probe inlet must be away from 

furnace or incineration flues or other minor sources of SO2 or NO.

 Y

4. SPACING FROM 

OBSTRUCTIONS

(a) To avoid scavenging, the probe inlet must have unrestricted airflow 

and be located away from obstacles. The separation distance must be at 

least twice the height that the obstacle protrudes above the probe inlet. 

 Y

(b) The probe inlet must have unrestricted airflow in an arc of at least 

180 degrees. This arc must include the predominant wind direction for 

the season of greatest pollutant concentration potential.

 Y

5. SPACING FROM 

TREES

(a) To reduce possible interference the probe inlet must be at least 10 

meters or further from the drip line of trees.

 Y

(c) No trees should be between source and probe inlet for microscale 

sites.

 Y

6. SPACING FROM 

ROADWAYS

See spacing requirements table below Y

9. PROBE 

MATERIAL & 

RESIDENCE TIME 

(a) Sampling train material must be FEP Teflon or borosilicate glass 

(e.g., Pyrex). 

 Y

(c) Sampling probes for reactive gas monitors at NCore must have a 

sample residence time less than 20 seconds.

 Y

Are there any changes that might compromise original siting criteria? If so, provide detail in comment section. N

Other Comments: Please see the Ozone section for detail on individual sites.

Roadway

average daily traffic,

vehicles per day

Minimum

distance1

(meters)

Minimum

distance1, 2

(meters)

≤1,000 10 10

10,000 10 20

15,000 20 30

20,000 30 40

40,000 50 60

70,000 100 100

≥110,000 250 250

1Distance from the edge of the nearest traffic lane. The 

distance for intermediate traffic counts should be 

interpolated from the table values based on the actual 

traffic count.

2Applicable for ozone monitors whose placement has not 

already been approved as of December 18, 2006.
156

References

1. Code of Federal Regulations, Title 40, Part 58, Appendix A, B, C, D & E.

2. Code of Federal Regulations, Title 40, Part 50.

3. Code of Federal Regulations, Title 40, Part 53.

4. Code of Federal Regulations, Title 40, Part 58.

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. U.S. EPA Revisions to Ambient Air Monitoring Regulations – Final Rule. 40 CFR, Parts 53 and 58. 

Federal Register 7: 61236. October 17, 2006

7. U.S. EPA National Ambient Air Quality Standards for Particulate Matter – Final Rule. 40 CFR Parts 50, 

51, 52, 53, and 58. January 15, 2013 

8. Guidance for Network Design and Optimum Site Exposure for PM2.5 and PM10, EPA-454/R-99-022, 

December 15, 1997.

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

10. Ambient Monitoring Guidelines for Prevention of Significant Deterioration (PSD), EPA-450/4-87-007, 

May 1987.

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