2014 Ambient Air Monitoring 

Network Report 

 

Washington State Department of Ecology

300 Desmond Drive/PO Box 47600

Olympia, Washington 98504-7600 

 

 

 

 

 

May 2014

Publication no. 14-02-009
Publication and Contact Information

For more information contact:

Air Quality Program 

P.O. Box 47600 

Olympia, WA 98504-7600 

Phone: 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 

For special accommodations or documents in alternate format, call 

(360) 407-6800, 711 (relay service), or 877-833-6341 (TTY).
2014 Ambient Air Monitoring

Network Report

Prepared By 

Michael Ragan

Statewide Ambient Air Monitoring Coordinator

 Edited by Sarah Elledge

Air Quality Program

Washington State Department of Ecology 

Olympia, Washington 
This page is purposely left blank
i 

Table of Contents Page

Executive Summary ................................................................................................ vi

Purpose of the report .................................................................................................... vi

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

Ozone (O3, 44201) ............................................................................................... vi

Nitrogen Dioxide (NO, 42600, 42601, 42612) .................................................... vi

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

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

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

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

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

Trace Gas Monitoring .......................................................................................... ix

NCore .................................................................................................................. ix

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

Other – Contracted Sites USFS ........................................................................... ix

Other – Contracted Local Air Agencies .............................................................. ix

Background information .........................................................................................x

Monitoring network requirements .................................................................................x

Using monitoring data....................................................................................................x

Introduction .................................................................................................................11

Regulatory Requirements & Other Data Needs .................................................................12

Appendix D Requirements ...........................................................................................12

Monitoring Objectives and Spatial Scales ...........................................................12

Number of State and Local Air Monitoring Stations ..........................................13

Appendix E Requirements ...........................................................................................14

Other Ambient Air Monitoring Data Needs ........................................................14

Network Review Procedure .................................................................................16

Network Review Team and Preparation ..............................................................16

Network Modifications ........................................................................................16

Determining Compliance with Appendix D and Special Monitoring Requirements

 .............................................................................................................................16

Number and Location of Monitors ......................................................................17

Determining Compliance with Appendix E Requirements .................................17

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

Meteorological Monitoring (Met. 61101, 61102, 62101) ...................................98

Other – Contracted Local Air Agencies ............................................................115

Other – Contracted Sites Tribal/EPA ................................................................121

Lead (Pb 14129) ................................................................................................132

Trace Gas Monitoring ........................................................................................134

Toxics .........................................................................................................................137

Speciation ...................................................................................................................139

APPENDIX D SITE EVALUATION FORMS ...............................................................145
ii

APPENDIX E SITE EVALUATION FORMS ...............................................................153

Appendix C ......................................................................................................................161

Vancouver, WA PM2.5 Site Relocation Assessment ..................................................161

References ........................................................................................................................170
iii

List of Tables 

Table 1: Relationship between Monitoring Objectives and Scale of Representativeness

...................................................................................................................................... 12

Table 2: Summary of Spatial Scales for SLAMS........................................................... 13

Table 3: Summary of Probe and Monitoring Path Siting Criteria ................................... 15

Table 4: Carbon Monoxide, Parameter code 42101...................................................... 19

Table 5: Ozone, Parameter code 44201 ....................................................................... 24

Table 6: Nitrogen Dioxide Parameter codes 42600, 42601, 42612............................... 37

Table 7: Sulfur Dioxide Parameter code 42401............................................................. 41

Table 8: Particulate Matter 10 PM10, Parameter code 81102........................................ 44

Table 9: Particulate Matter PM2.5, Parameter codes 88101, 88502............................... 49

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

Table 11: Met Monitoring, Parameter codes, 61101, 61102, 62101.............................. 98

Table 10: Other Contracted Sites USFS ..................................................................... 115

Table 11: Other - Contracted Sites Tribal/EPA............................................................ 121

Table 12: Pb Lead, Parameter code 14128................................................................. 132

Table 13: Trace Gas Monitoring.................................................................................. 134

Table 14: NCore Parameters Seattle Beacon Hill ....................................................... 135

Table 15: NCore Parameters Cheeka Peak................................................................ 136

Table 16: Toxics.......................................................................................................... 137

Table 17: Speciation.................................................................................................... 139
iv

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

CSA Combined Statistical Area

CSN Chemical Speciation Network

CO Carbon Monoxide 

DOE Department of Ecology

DV Design Value

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

NAQQS 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 Nitrogen Dioxides

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 equal to or less than 10 microns in diameter and equal to or 

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 
v 

Acronyms Continued 

STN Speciation Trends Network

TEOM Tapered Element Oscillating Microbalance 

TSP Total Suspended Particulate 

μg/m3 Micrograms per cubic meter

USEPA United States Environmental Protection Agency 

VOC Volatile Organic Compound 

YRCAA Yakima Region Clean Air Agency
vi

Executive Summary

Purpose of the report

The Department of Ecology (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 2013 review. These results 

include: 

• Identifying modifications to Ecology’s ambient air monitoring network since the 2013 

annual network report 

• Identifying proposed modifications to the network for the upcoming year 

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

 

Carbon Monoxide, (CO, 42101) 

Recommendations/Modifications: Trace level CO monitoring was established at the new

Seattle 10th & Weller near road site. Ecology and its monitoring partners have divested of 

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

Additional Monitors: None. 

Ozone (O3, 44201) 

Recommendations/Modifications: None 

Additional Monitors: None. 

Nitrogen Dioxide (NO, 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 nitrogen species (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 planned for 2015 in the Tacoma area, 

if leasing and permitting are allowed.
vii

Sulfur Dioxide (SO2, 42401) 

Recommendations/Proposed Modifications: None 

Additional Monitors: None 

Particulate Matter 10 (PM10, 81102) 

Recommendations/Proposed Modifications: None 

Additional Monitors: None. Continue all identified sites 

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 (53670013) 5-year PM10

design value estimate for 2009-2013 was 45 μg/m3. The PM10 design value estimate for 2011-

2013 was 45 μg/m3

. This current design value estimates demonstrate the TCMA complies with 

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

 

Kent, Seattle, & Tacoma PM10 Maintenance Areas

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

Areas. Three and five year design values were calculated using the table look up method and the 

statistical fit method outlined in the LMP guidance document and the Kent, Seattle, and Tacoma 

PM10 Limited Maintenance Plan. 

A 3-year PM10 design value of 150 μg/m3 or below demonstrates continued compliance with the 

PM10 NAAQS. A 5-year design value below 98 μg/m3 is 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 St and Central Ave (530332004) is used to assure continued 

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

Maintenance Plan approach. The five year design value is 47±4 μg/m3 and the three year design 

value is 47±3 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 Limited 

Maintenance Plan approach. The five year design value is 58±6 μg/m3 and the three year design 

value is 59±8 μg/m3

. 
viii

The PM2.5 Nephelometer at Tacoma – Alexander Ave (530530031) is used to assure continued 

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

Maintenance Plan approach. The five year design value is 64±12 μg/m3 and the three year design 

value is 65±13 μg/m3. 

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

Additional Monitors: None 

Recommendations/Modifications: Vancouver site relocation (see Appendix C.), Seattle 

Duwamish site relocation due to lost lease, Seattle Olive Street will be relocated as a PM2.5 

FEM at the Seattle 10th & Weller near-road site and ORCAA is proposing relocation of the Port 

Angeles site based on access and a recent study (detail in PM2.5).

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: None. 

Recommendations/Modifications: Meteorological monitoring was established at the new

Seattle 10th & Weller near road site. 

Lead (Pb 14129) 

Additional Monitors: None.

Recommendations/Modifications: None 
ix

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 the fall of 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. EPA 

has decided to discontinue the PM2.5 and PM10 at Harrah monitoring during 2014. 

Other – Contracted Sites USFS

Additional Monitors: None 

Recommendations/Modifications: None 

Other – Contracted Local Air Agencies

Additional Monitors: None 

Recommendations/Modifications: 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.
x 

Background information 

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

regulations (Code of Federal Regulations, Title 40, Part 58 (40 CFR Part 58)) require states to 

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

quality surveillance system consists of a network of 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
11

Introduction

The Code of Federal Regulations, Title 40, Part 58 (40 CFR Part 58) contains the federal Environmental 

Protection Agency’s (EPA’s) ambient air quality surveillance regulations. Section 58.20 requires states 

to establish air quality surveillance systems in their State Implementation Plans (SIPs). The air quality 

surveillance system consists of a network of designated State and Local Air Monitoring stations 

(SLAMS). These stations measure ambient concentrations of those air pollutants for which standards 

exist in 40 CFR Part 50 and Part 58, Appendices A (Quality Assurance Requirements), C (Ambient Air 

Quality Monitoring Methodology), D (Network Design Criteria) and E (Probe and Path Siting Criteria). 

States determine 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 National Ambient Air Quality Standards (NAAQS)

• Determining the location of maximum pollutant concentrations

• Determining the effectiveness of air pollution control programs 

• Evaluating the effects of air pollution on public health 

• Tracking the progress of SIPS 

• Supporting dispersion models 

• Developing responsible, cost-effective, control strategies

• Developing air quality trends 

• Analyze pollution episodes 

• Assist with permitting work
12

Regulatory Requirements & 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
13

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 

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. 
14

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

Washington uses special purpose monitors (SPMs) typically nephelometers, throughout Washington 

State. SPMs are used for a variety of purposes, including Washington’s Air Quality Advisory program, 

ambient air quality assessment and special studies such as secondary aerosol and ozone precursor 

assessments. SPM nephelometer monitoring sites utilize Federal Reference Method (FRM) sampling 

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

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

ambient particulate levels within regions of the State, while providing the flexibility to relocate the sites 

if it is determined there is no concern for NAAQS violations in the area, typically after three years of 

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

has been recorded, or if elevated pollutant concentrations are consistently measured. 
15

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 and 

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, and

Regional

[1km]

3-15 >1 >10

CO

Micro, Middle

[300m]

Neighborhood

[1km]

3±0.5; 3-15 >1 >10

O3

Middle [300m] 

Neighborhood

Urban, and

Regional

[1km]

3-15 >1 >10

Ozone 

precursors

Neighborhood 

and urban

[1km]

3-15 >1 >10

NO2

Middle [300m] 

Neighborhood

and Urban

[1km]

3-15 >1 >10

PM10

Micro; Middle,

Neighborhood

Urban and

Regional

2-7 (Micro);

2-15 (All other 

scales)

>2 (All scales, 

horizontal 

distance 

only)

>10 (All scales)
16

Network Review Procedure 

Network Review Team and Preparation 

Network report participants include the Washington State Department of Ecology Air Quality 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. 
17

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. 

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.
18

Figure 1: MAP of Washington State Monitoring (all sites)
19

Table 4: Carbon Monoxide, Parameter code 42101

AQS # Site Name Est. Type Scale Sampling 

Frequency

Action for

2014

530630049 Spokane, 3rd & Washington 1/9 SLAMS Micro Continuous Continue*

530330080 Seattle Beacon Hill 3/0 NCore Urban Continuous Continue

530330030 Seattle 10th & Weller 4/1 Near-road Urban Continuous Continue

530090013 Cheeka Peak 5/0 Rural 

NCore

Regional Continuous Continue

Additional Monitors: A carbon monoxide monitor has been collocated with NO monitoring at Seattle 

10th &Weller, a near-roadway site. 

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

monitoring at all but one site, Spokane 3rd and Washington. 

Map of Washington Carbon Monoxide sites 
20

Spokane, 3rd & Washington 

Site Name Spokane, 3rd & Washington – SLAMS 

AQS ID 530630049

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

Location In a shelter near 3rd and Washington, Downtown Spokane

Address 3rd & 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 & 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. 

Exceedences: This site has not exceeded the daily or annual standard for CO in over 10 years. 
21

Seattle, Beacon Hill 

Site Name Seattle Beacon Hill

AQS ID 530330080

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

Location In a trailer at a City of Seattle 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 Teledyne-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 Teflon

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 a City of Seattle 

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.
22

Seattle, 10th & Weller 

Site Name Seattle, 10th & Weller

AQS ID 530330030

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

Location In a shelter 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 42101 (POC 2)

Basic monitoring objectives(s) NAQQS Comparison

Site type(s) Population Exposure

Monitor type(s) SLAMS

Instrument manufacturer and model Teledyne-API Ultra 300E (Temporary loan)

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 & Weller is Washington’s primary near-road monitoring site. Carbon Monoxide monitoring 

is EPA required at one near-road site.
23

Cheeka Peak - (ORCAA) 

Site Name Cheeka Peak

AQS ID 530090013

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

Location In a shelter 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 300EU

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? Instrument upgrade: Teledyne API T300M/T300L

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.
24

Table 5: Ozone, Parameter code 44201

AQS # Site Name Est. Type Scale Sampling 

Frequency

Action

For 

2014

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 12/755 SLAMS 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: None. 

Recommendations/Proposed Modifications: None 

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

(NWCAA) and Spokane (SRCAA). See Other Agencies.
25

Map of Washington Ozone sites 
26

Cheeka Peak - (ORCAA) 

Site Name Cheeka Peak

AQS ID 530090013

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

Location 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 3 years. 
27

Cheney, Turnbull 

Site Name Cheney Turnbull

AQS ID 530630001

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

Location In the Cheney National Wildlife Refuge

Address S. 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 0.060

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. 

Exceedences: This site has not exceeded the 8-hour ozone standard in the past 3 years. 
28

Custer/Loomis – (NWCAA) 

Site Name Custer/Loomis

AQS ID 530730005

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

Location In 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 0.046

Purpose: Custer/Loomis site provides data from Canadian impacts as modeling information for the Puget Sound 

Ozone network. 

Exceedences: This site has not exceeded the eight hour standard for Ozone in the past 3 years. 
29

Enumclaw, Mud Mountain Dam 

Site Name Enumclaw, Mud Mountain Dam

AQS ID 530330023

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

Location On Mud Mountain Dam property (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 & 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 0.063

Purpose: Mud Mountain Dam is an urban scale State and Local Monitoring Site (SLAMS) established in 1998 

located 30 miles East of Seattle, near Enumclaw at the end of the ozone transport zone. 

Exceedences: This site has exceeded the 8-hour standard in the past 3 years (2012). 
30

Issaquah, Lake Sammamish 

Site Name Issaquah, Lake Sammamish

AQS ID 530330010

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

Location In a shelter within 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 0.054

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. 

Exceedences: This site has not exceeded the 8-hour standard in the past 3 years. 
31

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 In a room at Jackson Visitors 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 0.059

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

Exceedences: This site has not exceeded the 8-hour ozone standard in the past 3 years.
32

North Bend, North Bend Way 

Site Name North Bend

AQS ID 530330017

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

Location USDA Forest Service 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 0.056

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. 

Exceedences: This site has exceeded the 8-hour ozone standard in the past 3 years (2012). 
33

Seattle, Beacon Hill 

Site Name Seattle Beacon Hill

AQS ID 530330080

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

Location In a trailer at a City of Seattle 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 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 4/97

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 Teflon

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 0.045

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

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. 

Exceedences: This site has not exceeded the 8-hour standard in the past 3 years. 
34

Spokane, Greenbluff 

Site Name Spokane, Greenbluff

AQS ID 530630046

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

Location At a fire station in Chatteroy, WA 

Address E. 9814 Greenbluff Road, Spokane

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. 

Exceedences: This site has not exceeded the 8-hour ozone standard in the past 3 years. 
35

Vancouver, Blairmont 

Site Name Vancouver, Blairmont

AQS ID 530110011

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

Location In a shelter, 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 0.055

Purpose: Blairmont is an urban scale site near downtown Vancouver. The site represents the Portland/Vancouver

air shed and part of the ozone maintenance planning effort of the Southwest Clean Air Agency (SWCAA). 

Exceedences: This site has not exceeded the 8-hour ozone standard in the past 3 years. 
36

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 acommercial/residential area. Yelm represents ozone transport in the South Puget Sound area. 

Exceedences: This site has exceeded the 8-hour ozone standard in the past 3 years (2012). 
37

Table 6: Nitrogen Dioxide Parameter codes 42600 NOy, 42601 NO, 42612NOy - NO

AQS # Site Name Est. Type Scale Sampling 

Frequency

Action for 

2014

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 1/14-5 SLAMS Micro Continuous Planning/

installation

Additional Monitors: A second near-road NO2 monitor is planned for installation in 2015 as leasing 

and permitting are allowed.

Recommendations/Proposed Modifications: None 

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

a City of Seattle 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.

Map of Washington Nitrogen Dioxide sites 
38

Seattle, Beacon Hill 

Site Name Seattle Beacon Hill

AQS ID 530330080

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

Location In a trailer at a City of Seattle 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 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 T200U & 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 Teflon

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 a City of Seattle 

park/reservoir. Inaddition 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.
39

Seattle, 10th & Weller 

Site Name Seattle, 10th & Weller

AQS ID 530330030

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

Location In a shelter adjacent to Interstate 5 in Downtown Seattle

Address 10th & 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 & Weller is an EPA required, near-road monitoring site.
40

Cheeka Peak (ORCAA) 

Site Name Cheeka Peak

AQS ID 530090013

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

Location 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.
41

Table 7: Sulfur Dioxide Parameter code 42401

AQS # Site Name Est. Type Scale Sampling 

Frequency

Action for 

2014

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 

Map of Washington Sulfur Dioxide sites 
42

Seattle, Beacon Hill 

Site Name Seattle Beacon Hill

AQS ID 530330080

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

Location In a trailer at a City of Seattle 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 42401

Basic monitoring objectives(s) NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) NCore

Instrument manufacturer and model Thermo 43C

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 Teflon

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 a City of Seattle 

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.
43

Cheeka Peak - (ORCAA) 

Site Name Cheeka Peak

AQS ID 530090013

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

Location 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.
44

Table 8: Particulate Matter 10 PM10, Parameter code 81102

AQS# Site Name Est. Type Scale Sampling

Type

Action 

for 2014

530650004 Colville, S Oak 11/96 

3/07

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: 

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 (53670013) 5-year PM10 design 

value estimate for 2009-2013 was 45 μg/m3. The PM10 design value estimate for 2011-2013 was 45 

μg/m3

. This current design value estimates demonstrate the TCMA complies with the PM10 standard and 

continues to meet EPA’s LMP qualification criteria. 

 

Kent, Seattle, & Tacoma PM10 Maintenance Areas

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

Three and five year design values were calculated using the table look up method and the statistical fit 

method outlined in the LMP guidance document and the Kent, Seattle, and Tacoma PM10 Limited 

Maintenance Plan. 

A 3-year PM10 design value of 150 μg/m3

 or below demonstrates continued compliance with the PM10 

NAAQS. A 5-year design value below 98 μg/m3 is 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 St and Central Ave (530332004) is used to assure continued 

compliance with the PM10 NAAQS and to confirm continued eligibility for the Limited Maintenance 

Plan approach. The five year design value is 47±4 μg/m3

 and the three year design value is 47±3 μg/m3. 
45

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 Limited Maintenance Plan approach. The 

five year design value is 58±6 μg/m3 and the three year design value is 59±8 μg/m3

. 

The PM2.5 Nephelometer at Tacoma – Alexander Ave (530530031) is used to assure continued 

compliance with the PM10 NAAQS and to confirm continued eligibility for the Limited Maintenance 

Plan approach. The five year design value is 64±12 μg/m3 and the three year design value is 65±13 

μg/m3

. 

Map of Washington Particulate Matter 10 sites 
46

Colville, S Oak 

Site Name Colville, S Oak

AQS ID 530650004

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

Location On the roof of the 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. 

Exceedences: This site has exceeded the standard for PM10 in the past 3 years (2011). 
47

Kennewick, Metaline Avenue – (BCAA) 

Site Name Kennewick, Metaline Avenue

AQS ID 530050002

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

Location On the roof 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 & 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 (0.41)

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

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

Exceedences: Kennewick had 3 exceedances of 24-hr PM10 standard in 2013 and Washington plans to pursue 

exceptional event status for them. 

1

 Pending exceptional events demonstration for high winds on 9/15/2013, 10/28/2013 and 11/02/2013. 
48

Spokane, Augusta Ave. – (SRCAA) 

Site Name Spokane, Augusta Avenue.

AQS ID 530630021

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

Location On the roof of the Spokane Region Clean Air Agency

Address 3104 E. Augusta Ave., 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 & 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 Ave. 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. 

Exceedences: We had one exceedance of the 24-hour PM10 standard at Spokane. We have flagged this value, 

leaving open the possibility that we could submit an exceptional event demonstration to EPA in the future. 
49

Yakima, S 4th – (YRCAA) 

Site Name Yakima, S 4th

AQS ID 530770009

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

Location On the roof 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: S 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. 

Exceedences: This site has not exceeded standard for PM10 in the past 3 years 
50

Table 9: Particulate Matter PM2.5, Parameter codes 88101, 88502

AQS# Site Name Est. Type Sample 

Type

Sampling 

Frequency

Action 

for 2014

530272002 Aberdeen Division St 8/02 SPMS Continuous Continuous Continue 

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

530730015 Bellingham, Yew Street 11/12 SLAMS Continuous Continuous Continue 

530350007 Bremerton Spruce 5/12 SPMS Continuous Continuous Continue

530030004 Clarkston 3/07 SPMS Continuous Continuous Continue

530410004 Chehalis 12/09 SPMS Continuous Continuous Continue

530090013 Cheeka Peak 5/06 Rural 

NCore

Continuous Continuous Continue

530650004 Colville 1/02 SPMS Continuous Continuous Continue

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

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

530370002 Ellensburg 10/07 SPMS Continuous Continuous Continue

530050002 Kennewick, Metaline Ave 8/04 SPMS Continuous Continuous Continue 

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

530670013 Lacey, College St 1/02 SPMS Continuous Continuous Continue

530750005 LaCrosse, Hill St 7/02 SPMS Continuous Continuous Continue

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

530150015 Longview, 30th Ave 3/03 SPMS 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 SPMS Continuous Continuous Continue

530251002 Moses Lake, Balsam St 1/03 SPMS Continuous Continuous Continue

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

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

530090009 Port Angeles, W 14th St 11/99 SPMS Continuous Continuous Continue

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

530750003 Pullman, Dexter Ave 3/01 SPMS Continuous Continuous Continue

530531018 Puyallup, 128th St 1/03 SPMS Continuous Continuous Continue

530010003 Ritzville, Alder St 3/01 SPMS Continuous Continuous Continue

530750006 Rosalia, Josephine St 6/02 SPMS 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

530330048 Seattle, Olive St 3/03 SPMS Continuous Continuous Continue

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

530630021 Spokane, Augusta 3/09 1/13 SLAMS SEQ/Cont. 1/6 Continue

530630047 Spokane, Monroe Street 7/03 SPMS Continuous Continuous Continue

530530031 Tacoma, Alexander Ave 1/03 SPMS Continuous Continuous Continue

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

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

530110023 Vancouver NE Van 8/13 SLAMS FEM Continuous Continue

530710005 Walla Walla, 12th St 1/02 SPMS Continuous Continuous Continue

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

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

530770009 Yakima, S 4th Ave 5/00 10/11 SLAMS SEQ/Cont. 1/3 Continue

 
51

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/m3

. In addition, some monitors in areas of Washington are 

not intended to be solely NAAQS based. Certain 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. 

Additional Monitors: None. See recommendations/modifications.

Recommendations/Modifications: Vancouver site relocation (see Appendix C.), Seattle 

Duwamish site relocation due to lost lease, Seattle Olive Street will be relocated as a PM2.5 FEM at the

Seattle 10th & Weller near-road site and ORCAA is proposing relocation of the Port Angeles site. The

current Port Angeles air monitoring station, located at Stevens Middle School, should be relocated to the

Port Angeles Fire Station. Data from a 2014 saturation study, conducted with a total of 4 locations, 

including Stevens, records increased PM2.5 levels at the Port Angeles Fire Department for most of the 

year. Moving to the fire station would decrease inlet tubing length by approximately 150 feet, to a total 

length of 10 feet. Stevens Middle School winter break often causes accessibility problems. The fire 

station is open 24/7, which guarantees the ability, and flexibility to maintain and repair equipment 

Relocation would not alter the current neighborhood scale or any other placement factors. 

Map of Washington Particulate Matter 2.5 sites 
52

Aberdeen, Division Street – (ORCAA) 

Site Name Aberdeen Division Street

AQS ID 530272002

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

Location In a room 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) SPMS

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 *

• Indicates insufficient data.

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

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

season. 
53

Bellevue, Bellevue Way 

Site Name Bellevue, Bellevue Way

AQS ID 530330037

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

Location On the roof 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 & 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) SPMS

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 13.1

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 On the roof of a 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 *

• Indicates insufficient data.

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 – (PSCAA) 

Site Name Bremerton, Spruce

AQS ID 530350007

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

Location In a shelter

Address 3250 Spruce Ave, 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 *

• Indicates 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 In a shelter

Address Cheeka Peak, Clallam County

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 5.2

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

not suitable for comparison to the PM2 5 NAAQS. 
57

Chehalis, Market Boulevard 

Site Name Chehalis, Market Boulevard

AQS ID 530410004

GPS coordinates LAT/LONG: 046 66’40”/122 96’73”

Location On a roof

Address 350 N. 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) SPMS

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 17.5

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

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 nephelometer 

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 29.7 (24.32)

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

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

2 Excluding exceedances during wildfire events of September – October 2012 
59

Colville 

Site Name Colville, South Oak

AQS ID 530650004

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

Location On the roof of the Stevens County Courthouse

Address 215 S. 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) SPMS

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 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) 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 24.2

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

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

Darrington, Fir St – (PSCAA) 

Site Name Darrington, Fir Street

AQS ID 530610020

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

Location Shelter next to a building

Address 1085 Fir St, 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 installed

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 28.1 FEM / 26.1 Nephelometer

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

Dayton, 206 W. Main 

Site Name Dayton

AQS ID 530130002

GPS coordinates LAT/LONG: 046.3180”/ 117.9850

Location Shelter next to firehouse

Address 206 W. 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) SPMS

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 15.7

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 season. 
62

Ellensburg, Ruby St 

Site Name Ellensburg, Ruby Street

AQS ID 530370002

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

Location On the roof 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 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SPMS

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 11/95 established, 10/07 nephelometer 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) 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 39.4 (29.83)

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

2006. 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. 

3 Excluding exceedances during wildfire events of September – October 2012 
63

Kennewick, Metaline Avenue – (BCAA) 

Site Name Kennewick, Metaline Avenue

AQS ID 530050002

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

Location On the roof of Kennewick Skills Center

Address 5929 W Metaline, Kennewick

County Benton

Distance to road from gaseous probe (meters) 84

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 88502 (POC 4)

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SPMS

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 20.6

Purpose: Kennewick is 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 & Central – (PSCAA) 

Site Name Kent, James & Central

AQS ID 530332004

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

Location In a shelter

Address 614 N 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 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 23.9 FEM / 21.3 Nephelometer
65

Lacey, College St – (ORCAA) 

Site Name Lacey, College Street

AQS ID 530670013

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

Location In a shelter at a school

Address 1900 College St 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) SPMS

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 25.5

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

site is representative of the 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 Limited 

Maintenance Plan (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 On a roof

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) SPMS

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 15.2

Purpose: LaCrosse is 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 In a shelter, on the roof of a building

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) SPMS

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 24.2

Purpose: Lake Forest Park is 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 Ave – (SWCAA) 

Site Name Longview, 30th Avenue

AQS ID 530150015

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

Location Located in a room at Olympic Middle School

Address 1324 30th Ave, 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) SPMS

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 17.4

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 – (PSCAA) 

Site Name Lynnwood, 212th

AQS ID 530610005

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

Location In a trailer at a public utility district

Address 6120 212th 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 & Thermo 8500c FEM

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 1/11 FEM & 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 20.0 Nephelometer / * FEM

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

representative of Lynnwood and the south Snohomish County area. 
70

Marysville, 7th Ave – (PSCAA) 

Site Name Marysville, 7th Avenue

AQS ID 530611007

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

Location In a shelter at Marysville Junior High School

Address 1605 7th ST, 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 24.3 FEM / 26.0 Nephelometer

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

and light industry. Marysville is representative of the Marysville/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 On a roof

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) SPMS

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 19.5

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, Balsam Street 

Site Name Moses Lake, Balsam Street

AQS ID 530251002

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

Location On a roof

Address 412 S Balsam St, 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) SPMS

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 19.4

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, S Second St – (NWCAA) 

Site Name Mt. Vernon, S. Second Street

AQS ID 530570015

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

Location In 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) SPMS

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 10.0

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 In a shelter at USDA Forest Service 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) SPMS

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 16.8

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, W 14th Street (ORCAA) Scheduled for Relocation by ORCAA in 2014

Site Name Port Angeles, W. 14th Street

AQS ID 530090009

GPS coordinates LAT/LONG: 048 06' 59" / 123 27' 52"

Location In/on a school

Address 1139 W 14th St., Port Angeles

County Clallam

Distance to road from gaseous probe (meters) 25

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) SPMS

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, 10/02 nephelometer installed

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? Yes. ORCAA is recommending relocation based on 

access issues and a recent PM survey.

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

Design value *

• Indicates insufficient data.

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

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

season. 
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 In/on a 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) SPMS

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 13.5

Purpose: Port Townsend is 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 In/on a 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) SPMS

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 18.1

Purpose: Pullman is a neighborhood scale site is 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 In a shelter 

Address 9616 128th St E, 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) SPMS

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 23.0

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

County South Hill area. 
79

Ritzville, Alder Street 

Site Name Ritzville, Alder Street

AQS ID 530010003

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

Location Shelter next to building

Address 109 W 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) SPMS

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 15.4

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 S Josephine Avenue, 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) SPMS

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 13.8

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 In a shelter at Jefferson Park in Seattle

Address 4103 Beacon Avenue S., 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 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 15.5 FEM / 15.7 FRM

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) Being RELOCATED

Site Name Seattle, E. Marginal Way

AQS ID 530330057 (Former)

GPS coordinates TBD, being relocated

Location In a shelter 

Address Being relocated also on 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

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? Yes. Due to site loss of the site lease,

PSCAA is relocating the site approximately 

1 block South on E. Marginal Way. 

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

Design value 23.4 FEM / 21.6 Nephelometer

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

mobile source diesel emissions and industrial sources. 
83

Seattle, Olive St – (PSCAA) Being RELOCATED to Seattle 10th & Weller

Site Name Seattle, Olive Street

AQS ID 530330048 

GPS coordinates LAT/LONG: 047 36' 55" / 122 19' 48"

Location In a shelter

Address 1624 Boren Avenue, Seattle

County King

Distance to road from gaseous probe (meters) 45

Traffic count (AADT, year) N/A

Groundcover Membrane roof , grass, cement

Statistical Area Seattle-Bellevue-Everett, WA

Monitor Information Pollutant, POC 

Parameter code 88502 (POC 3)

Basic monitoring objectives(s) Public Information to NAQQS Compliance

Site type(s) Population Exposure

Monitor type(s) SPMS to SLAMS

Instrument manufacturer and model Ecotech M9003/100G to FEM

Method code 812

FRM/FEM/ARM/other Other

Collecting Agency Puget Sound Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Micro

Monitoring start date 1/03 (relocation date TBD in 2014)

Current sampling frequency Continuous

Calculated sampling frequency N/A

Sampling season Year-round

Probe height (meters) 9 base of ground

Distance from supporting structure (meters) N/A

Distance from obstructions on roof (meters) 20 building

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? Yes. Site is being discontinued and PM2 5 FEM is being 

located at Seattle 10th and Weller (near-road) 

Is it suitable for comparison against the PM2.5 NAAQS? No currently, Yes when relocated.

Design value 16.7

Purpose: Seattle, Olive Street was established in 2003 as a micro scale PM2 5 site adjacent to Interstate 5 designed

to measure effects of mobile source diesel emissions. PM2 5 monitoring is being relocated to Seattle 10th & Weller

site. 
84

Shelton, W. Franklin – (ORCAA) 

Site Name Shelton, W. Franklin

AQS ID 530450007

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

Location In a shelter on the roof of the fire station

Address 122 W. 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) SPMS

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 *

• Indicates insufficient data.

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 - (SRCAA) 

Site Name Spokane, Augusta Avenue

AQS ID 530630021

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

Location In a shelter on the roof of SRCAA Offices

Address 3104 E. Augusta Ave., 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 25.7 FRM

Purpose: Spokane Augusta Ave. 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 On the roof of the Ecology Eastern Regional Office

Address N. 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) SPMS

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 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 24.7

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

representative of the area. 
87

Tacoma, Alexander Ave – (PSCAA) 

Site Name Tacoma, Alexander Avenue

AQS ID 530530031

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

Location In 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) SPMS

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 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 24.7

Purpose: Tacoma, Alexander Ave 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, S L St – (PSCAA) 

Site Name Tacoma, L Street

AQS ID 530530029

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

Location In a shelter

Address 7802 South L St., 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 28.9 FEM / 32.5 FRM

Purpose: Tacoma, L Street is a neighborhood scale site impacted by smoke from home heating devices. 
89

Vancouver, NE Van 

Site Name Vancouver, NE Van Plaza

AQS ID 530110023

GPS coordinates LAT/LONG: 045 64' 98" / 122 59' 01"

Location In a shelter, in Centerpoint/Van Plaza park

Address 8121 NE Vancouver Plaza Dr, Vancouver

County Clark

Distance to road from gaseous probe (meters) 120

Traffic count (AADT, year) N/A

Groundcover Grass

Statistical Area Portland-Vancouver, OR-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 FEM

Method code 181

FRM/FEM/ARM/other FEM

Collecting Agency Southwest Clean Air Agency

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 8/13

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) 22

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? Yes. This site is impacted by a single local 

source and will be relocated in 2014.

Is it suitable for comparison against the PM2.5 NAAQS? Yes* See attachment for exclusion.

Design value *

• Indicates insufficient data.

Purpose: Vancouver, NE Van is a neighborhood scale site impacted by smoke from home heating devices. 
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 On a roof

Address 200 S 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) SPMS

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 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 21.3

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, Fifth Street 

Site Name Wenatchee 5th Street

AQS ID 530070011

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

Location In 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 *

• Indicates insufficient data.

Purpose: Wenatchee Fifth St. was established in late 2012 as a neighborhood scale site to replace Wenatchee

Alaska Way. Wenatchee Fifth 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 a school

Address 406 W. 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) SPMS

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 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 21.2

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

of the area. 
93

Yakima, S 4th Ave – (YRCAA)

Site Name Yakima S. 4th Avenue

AQS ID 530770009

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

Location In a shelter on the roof of 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 *

• Indicates insufficient data.

Purpose: Yakima is a neighborhood scale site impacted by smoke from burning sources in the area. 
94

Other – Contracted Local Air Agencies

Table 10: Other - Contracted Local Air Agencies

AQS# Site Name Est. Type Scale Sampling

Type

Action for 

2014

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 In 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? Yes

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 In a shelter

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, 

Trace gasses NAAQS? 

PM2.5 – No, Ozone – Yes, Trace gases, Yes

Purpose: The Olympic Region Clean Air Agency (ORCAA) operates this Rural NCore site.
97

Spokane, Augusta (SRCAA) 

Site Name Spokane Augusta

AQS ID 530630021

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

Location In a shelter on the roof of SRCAA Offices

Address 3104 E. Augusta Ave., 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? Yes

Purpose: The Spokane Region Clean Air Agency (SRCAA) operates this site to collect 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 2014

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

530770017 Harrah WS, WD, Ta Neighborhood Continuous Discontinue

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 Continue

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: None.

Recommendations/Modifications: EPA is proposing the discontinuance of the Harrah Tribal site. Ecology is 

transitioning to RM Young ultrasonic measurements during 2014. RM Ultrasonic Method Codes: 050, 020, 040, 

062 (062,ws/wd, 040 temp) 

---
99

Cheeka Peak, Rural NCore

Site Name Cheeka Peak

AQS ID 530090013

GPS coordinates 048 29’ 78”/124 62’ 49”

Location In a shelter

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 09305

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 the monitoring at the Rural 

NCore site.
100

Colville – SLAMS 

Site Name Colville

AQS ID 530650004

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

Location On the roof of the Stevens County Courthouse

Address 215 S. 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 09305

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 the PM2 5 and PM10 monitoring 

at Colville.
101

Enumclaw, Mud Mountain Dam - SLAMS

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 the seasonal ozone monitoring 

at Enumclaw.
102

Harrah, (Yakama Nation) Proposed for discontinuance in 2014

Site Name Harrah

AQS ID 530770017

GPS coordinates 046 40’85’ / 120 54’ 39”

Location 

Address 3851 N Harrah Rd

County Yakima

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

Traffic count (AADT, year) N/A

Groundcover 

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 09305

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 12/12

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? EPA is proposing the discontinuance of the 

Harrah site

Is it suitable for comparison against the NAAQS? N/A 

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

at Harrah.
103

Kennewick, Metaline Avenue 

Site Name Kennewick, Metaline Avenue

AQS ID 530050002

GPS coordinates 046 13’ 06” / 119 12’ 03”

Location On a roof

Address 5929 W 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 09305

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 the PM2 5 and PM10 monitoring 

at Kennewick.
104

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 the seasonal ozone monitoring 

at North Bend. 
105

Oakville, (Chehalis) - SLAMS

Site Name Oakville, Chehalis Tribe

AQS ID 530270008

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

Location In 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 09305

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 the PM2 5 monitoring at 

Oakville.
106

Omak, Howanut Dr (Colville) - SPMS

Site Name Omak, Howanut Drive (Colville Nation)

AQS ID 530470013

GPS coordinates 048. 39’99” / 119 518’' 96” 

Location In a mill yard

Address 8th Ave & 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 the PM2.5 monitoring at Omak. 
107

Seattle, Beacon Hill - NCore 

Site Name Seattle, Beacon Hill

AQS ID 530330080

GPS coordinates 047 34' 58" / 122 18' 30"

Location Next to the shelter at Jefferson Park in Seattle

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 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 the NCore, Toxics and 

Speciation monitoring at Seattle Beacon Hill. 
108

Seattle, 10th & Weller – Near-road 

Site Name Seattle, 10th & Weller

AQS ID 530330030

GPS coordinates 047 59' 72" / 122 31' 97"

Location On a pad next to Interstate 5

Address 10th & 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 the near-road monitoring at 

Seattle 10th & Weller.
109

Spokane, Augusta Ave. - SLAMS 

 

Site Name Spokane, Augusta Avenue

AQS ID 530630021

GPS coordinates 047 39' 39" / 117 21' 26"

Location On the roof of the Spokane Regional Clean Air Agency

Address 3104 E. Augusta Ave., 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

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 the PM2 5, PM10 and ozone 

monitoring at Spokane Augusta. 
110

Tacoma, Tower Drive - SLAMS 

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

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. 
111

Toppenish, Ward Rd (Yakama) - SPMS

Site Name Toppenish Ward Road

AQS ID 530770015

GPS coordinates 046 23’ 07” / 120 18' 49”

Location At Toppenish HS

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

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 the PM2 5 monitoring at 

Wenatchee.
112

Vancouver, Blairmont - SLAMS

Site Name Vancouver, Blairmont

AQS ID 530110011

GPS coordinates 045 36' 37" / 122 30' 59"

Location At Blairmont HS

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

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 the seasonal ozone monitoring at 

Blairmont.
113

Wenatchee, Fifth St. – SLAMS 

Site Name Wenatchee Fifth

AQS ID 530070011

GPS coordinates 047 43’ 06” / 120 34’ 19” 

Location At Wenatchee Valley College

Address 1300 Fifth St, 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

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 the PM2 5 monitoring at 

Wenatchee Fifth.
114

White Swan (Yakama) - SPMS

Site Name White Swan

AQS ID 530770016

GPS coordinates 046.37’54”/120 72’ 93”

Location At a school

Address 621 Signal Peak Rd, 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

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 the PM2 5 monitoring at White 

Swan.
115

Other – Contracted Local Air Agencies

Table 12: Other Contracted Sites USFS

AQS# Site Name Est. Type Scale Sampling

Type

Action for

2014

530070007 Chelan 12/02 SPMS Neighborhood Continuous Continue

530070010 Leavenworth 2/05 SPMS Neighborhood Continuous Continue

530770007 Naches 8/08 SPMS Neighborhood Continuous Continue

530470009 Twisp 11/03 SPMS Neighborhood Continuous Continue

530470010 Winthrop 11/03 SPMS Neighborhood Continuous Continue 

Additional Monitors: None

Recommendations/Modifications: None 

Comment:* Nephelometers are not EPA equivalent method nor compliance instruments and design values are 

estimates.

 
116

Chelan, Woodin Ave – (USFS) 

Site Name Chelan, Woodin Avenue

AQS ID 530070007

GPS coordinates LAT/LONG: 047 50' 18” / 120 01' 23”

Location 

Address 428 W. 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) SPMS

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 Tygon

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 sites primary purpose is for Prescribed Burning decision making by the US Forest Service. 
117

Leavenworth, Evans St. – (USFS) 

Site Name Leavenworth, Evans Street

AQS ID 530070010

GPS coordinates LAT/LONG: 047 35' 56” / 120 39' 53”

Location In a school

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) SPMS

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 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 39.0 (23.24)

Purpose: This sites primary purpose is for Prescribed Burning decision making by the US Forest Service. 

4 Excluding exceedances during wildfire events of September-October 2012 
118

Naches, Hwy 12 – (USFS) 

Site Name Naches, Highway 12

AQS ID 530770007

GPS coordinates LAT/LONG: 046 43' 47” / 120 42' 13”

Location In a building

Address 10237 Hwy 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) SPMS

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 Tygon

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 sites primary purpose is for Prescribed Burning decision making by the US Forest Service. 
119

Twisp, Glover St – (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) SPMS

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 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 30.4 (23.45)

Purpose: This sites primary purpose is for Prescribed Burning decision making by the US Forest Service. This 

site is not suitable for comparison to the PM2 5 NAAQS. 

5 Excluding exceedances during wildfire events of September – October 2012 
120

Winthrop, W Chewuch Rd. – (USFS)

Site Name Winthrop, West Chewuch Road

AQS ID 530470010

GPS coordinates LAT/LONG: 048 28' 38” / 120 11' 26”

Location In a building

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) SPMS

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 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 25.7 (16.26)

Purpose: This sites primary purpose is for Prescribed Burning decision making by the US Forest Service. 

6

 Excluding exceedances during wildfire events of September – October 2012 
121

Other – Contracted Sites Tribal/EPA

Table 13: Other - Contracted Sites Tribal/EPA

AQS# Site Name (Tribe) Est. Type Scale Sampling

Type

Action for

2014 

530770017 Harrah (Yakama) 12/12 SPMS Neighborhood Continuous Discontinue

530090014 Neah Bay (Makah) 2/10 SPMS Neighborhood Continuous Continue

530270008 Oakville (Chehalis) 1/06 SPMS Neighborhood Continuous Continue

530470013 Omak (Colville) 10/10 SPMS Neighborhood Continuous Continue

530530022 Puyallup (Puyallup) 1/08 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 Continue

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 is proposing 

discontinuance of the Harrah Tribal site.

Comment:* Nephelometers are not EPA equivalent method, nor compliance instruments and design values are 

estimates.
122

Harrah, (Yakama Nation) – Proposed for discontinuance 

Site Name Harrah, Yakama Nation

AQS ID 530770017

GPS coordinates LAT/LONG: 046 40’85’ / 120 54’ 39”

Location In a shelter

Address 3851 N Harrah Rd

County Yakima

Distance to road from gaseous probe (meters) 10

Traffic count (AADT, year) N/A

Groundcover Gravel, asphalt

Statistical Area MSA: Not in an MSA

Monitor Information Pollutant, POC 

Parameter code 88101

Basic monitoring objectives(s) Public Information

Site type(s) Population Exposure

Monitor type(s) SPMS

Instrument manufacturer and model Thermo1400 TEOM’s

Method code 702/704/079

FRM/FEM/ARM/other Other

Collecting Agency Yakama Nation

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) 2.5

Distance from supporting structure (meters) 1

Distance from obstructions on roof (meters) N/A

Distance from obstructions not on roof (meters) 35

Distance from trees (meters) 35

Distance to furnace or incinerator flue (meters) 47

Distance between collocated monitors (meters) 1

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? Yes, site scheduled for discontinuance in 2014

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

Design value *

• Indicates insufficient data.

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 make burning curtailment calls in support of the Federal Rules for 

Reservations (FARR). 
123

Neah Bay, (Makah) – (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) SPMS

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 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 8.5

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 make burning curtailment calls in support of the Federal Rules for 

Reservations (FARR).
124

Oakville – (Chehalis Tribe)

Site Name Oakville, Chehalis Tribe

AQS ID 530270008

GPS coordinates LAT/LONG: 046 49' 23” / 123 09' 40"

Location In a shelter, in a field

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) SPMS

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 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 *

• Indicates 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 make burning curtailment calls in support of the Federal Rules for 

Reservations (FARR). 
125

Omak, Howanut Drive - (Colville Tribe) 

Site Name Omak, Howanut Drive Colville Tribe

AQS ID 530470013

GPS coordinates LAT/LONG: 048. 39’99” / 119 518’' 96”

Location In 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) SPMS

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 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 *

• Indicates 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 make burning curtailment calls in support of the Federal Rules for 

Reservations (FARR). 
126

Puyallup, 66th Ave - (Puyallup Tribe) 

Site Name Puyallup, 66th Avenue, Puyallup Tribe

AQS ID 530530022

GPS coordinates LAT/LONG: 047 12' 19” / 122 20' 19”

Location In a shelter on Puyallup Tribal property

Address 5722 66th Avenue E., Puyallup

County Pierce

Distance to road from gaseous probe (meters) 300+

Traffic count (AADT, year) N/A

Groundcover 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) SPMS

Instrument manufacturer and model Radiance Research M903

Method code 771

FRM/FEM/ARM/other Other

Collecting Agency Puyallup Tribe

Analytical Lab N/A

Reporting Agency Ecology

Spatial scale Neighborhood

Monitoring start date 1/08

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) 20

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 22.9

Purpose: This site is used by the Puyallup Tribe for air quality information on the Tribal Reservation. The air 

quality information is also used by EPA Region 10 to make burning curtailment calls in support of the Federal 

Rules for Reservations (FARR). 
127

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) SPMS

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 Tygon

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 make burning curtailment calls in support of the Federal Rules for 

Reservations (FARR). 

 
128

Toppenish, Ward Road - (Yakama Nation)

Site Name Toppenish, Ward Road

AQS ID 530770015

GPS coordinates LAT/LONG: 046 23’ 07” / 120 18' 49”

Location In a shelter at Toppenish HS

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) SPMS

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 Tygon

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 41.2 (39.47)

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 make burning curtailment calls in support of the Federal Rules for Reservations (FARR). 

7 Excluding exceedances during wildfire events of September – October 2012
129

Tulalip, Reuben Shelton Drive (Tulalip Tribe) 

Site Name Tulalip, Reuben Shelton Drive - Tulalip

AQS ID 530610011

GPS coordinates LAT/LONG: 047 06’90” / 122 27’ 50”

Location In a shelter on Tribal property

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) SPMS

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 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 *

• Indicates insufficient data.

Purpose: This site is used by the Tulalip Tribe for air quality information on the Reservation. The air quality 

information is also usedby EPA Region 10 to make burning curtailment calls in support of the Federal Rules for 

Reservations (FARR). 
130

Wellpinit, Ford-Wellpinit Road - (Spokane Tribe) 

Site Name Wellpinit, Ford-Wellpinit Road

AQS ID 530650002

GPS coordinates LAT/LONG: 047 53' 19” / 117 59' 19”

Location On a roof

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) SPMS

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 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 15.8

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 make burning curtailment calls in support of the Federal Rules for 

Reservations (FARR). 

 
131

White Swan - (Yakama Nation) 

Site Name White Swan - Yakama 

AQS ID 530770016

GPS coordinates LAT/LONG: 046.37’54”/120 72’ 93”

Location In a shelter at White Swan HS

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) SPMS

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 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 23.5

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 make burning curtailment calls in support of the Federal Rules for 

Reservations (FARR). 
132

Lead (Pb 14129) 

Table 14: Pb Lead, Parameter code 85129

AQS# Site Name Est. Type Scale Sampling

Type

Action for 

2014

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. ERG performs the analysis and submits the data to AQS. There is an SOP in Ecology’s 

Quality Assurance Plan which covers this instrument.
133

Seattle, Beacon Hill 

Site Name Seattle Beacon Hill

AQS ID 530330080

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

Location In a shelter at Jefferson Park, in Seattle

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 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. 
134

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

AQS# Site Name Est Type Scale Sampling

Type

Action

for 2014

530330080 Seattle Beacon Hill 4/9 NCore Urban Continuous Continue

530090013 Cheeka Peak 5/0 Rural NCore Regional Continuous Continue

Additional Monitors: None

Recommendations/Modifications: None. 

Note: Details of trace gas monitoring are found in CO, NO, SO2 sections.
135

Table 16: NCore Parameters Seattle Beacon Hill

Parameter Parameter 

Code

Sampling

/Analysis

Method

Sampling

schedule 

Spatial 

Scale

Instrument 

Type

Action 

for 2013

Ozone 44201 Continuous Urban API 440 E Continue

SO2 trace 42401 Continuous Urban Thermo 42C Continue

CO trace 42101 Continuous Urban API 300EU Continue

NOy trace 42600 Continuous Urban Thermo 42C-Y Continue

PM2.5 mass 88101 Manual 1/3 Urban Thermo 2025 Continue

PM2.5

Continuous

88502 Continuous Urban Thermo FDMS 

TEOM 

Continue

PM2.5 

Speciation

88502 Continuous

& Manual

1/3 Urban Met One SSAS &

URG 3000N

Carbon, Sunset

Labs OCEC

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

WS & WD 61101/61102 Continuous Urban RM Young 85004 Continue

Ambient 

temperature

62101 Continuous Urban RM Young 

Platinum probe

Continue

Delta 

Temperature

62106 Continuous Urban RM Young Continue

Ambient 

pressure

64101 Continuous Urban RM Young Continue

Relative 

humidity

62201 Continuous Urban Rotronics 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.
136

Table 17: NCore Parameters Cheeka Peak

Parameter Parameter 

Code

Sampling

/Analysis 

Method

Sampling 

schedule 

Spatial 

Scale

Instrument 

Type

Action 

for 2013

Ozone 44201 Continuous Continuous Rural API T400 Continue

SO2 trace 42401 Continuous Continuous Rural API T100U Continue

CO trace 42101 Continuous Continuous Rural API 300EU 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 PSD

Quality

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. 
137

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 National Air Toxics Trends Site Monitoring Program include 

but are not limited to:

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

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

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

• Provide representative air toxic data to support exposure assessments (i.e. determine health 

risks).

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

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

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

Table 18: Toxics

AQS# Site Name Est. Type Scale Sampling Type Action for 2014

530330080 Seattle Beacon Hill 4/97 NCore Urban Manual Continue

Additional Monitors: None 

Recommendations/Modifications: Continue listed site as described. 
138

Seattle, Beacon Hill - NCore

Site Name Seattle, Beacon Hill 

AQS ID 530330080

GPS coordinates 047 34' 58" / 122 18' 30"

Location In a shelter at Jefferson Park in Seattle

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 Unk.

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 Unk.

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

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

represent urban scale air toxics in the Pacific Northwest. It is currently the only designated urban scale NATTS 

located in the Pacific Northwest.
139

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

530611007 Marysville 2009 SPMS Neighborhood 1/6 Continue

530530029 Tacoma L St 2008 SPMS Neighborhood 1/6 Continue

530110023 Vancouver NE Van 2002 SPMS Neighborhood 1/6 Continue*

530770009 Yakima 2002 SPMS Neighborhood 1/6 Continue 

Additional Monitors: None

Recommendations/Modifications: * The Vancouver Speciation site has been identified by EPA as one of the 

Sites to be “de-funded” in 2015. Although not final, it may be discontinued in 2015 as a result. 

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
140

Seattle, Beacon Hill -NCore

Site Name Seattle, Beacon Hill

AQS ID 530330080

GPS coordinates 047 34' 58" / 122 18' 30"

Location In a shelter at Jefferson Park in Seattle

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, the State 

operates four supplemental speciation sites. These supplemental sites are located at:
141

Marysville, 7th Ave – (PSCAA) 

Site Name Marysville 7th Ave.

AQS ID 530611007

GPS coordinates 048 03' 18" / 122 10' 33"

Location In a shelter at Marysville Junior High School

Address 1605 7th ST, Marysville

County Snohomish

Distance to road from gaseous probe (meters) 10

Traffic count (AADT, year) N/A

Groundcover Grass, gravel

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 3/09

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

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.
142

Tacoma, L Street (PSCAA) 

Site Name Tacoma L Street

AQS ID 530530029

GPS coordinates 047 11' 11" / 122 27' 06"

Location In/at a shelter

Address 7802 South L St., 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.
143

Vancouver, NE Van (SWCAA) Listed as “defunded” by EPA in 2015 

Site Name Vancouver, NE Van (SWCAA)

AQS ID 530110023

GPS coordinates 045 64' 98" / 122 59' 01"

Location In a shelter at Centerpoint/Van Plaza Park

Address 8121 NE Vancouver Plaza Dr, Vancouver

County Clark

Distance to road from gaseous probe (meters) 120

Traffic count (AADT, year) N/A

Groundcover Grass

Statistical Area Portland-Vancouver, OR-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 Southwest Clean Air Agency

Analytical Lab RTI

Reporting Agency RTI

Spatial scale Neighborhood

Monitoring start date 6/08 Pre-relocation

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? EPA has defunded this site starting 4/01/2015 

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.
144

Yakima, S 4th (YRCAA)

Site Name Yakima S. 4th (YRCAA)

AQS ID 530770009

GPS coordinates 046 35' 42" / 120 30' 44"

Location In a shelter

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.
145

APPENDIX D SITE EVALUATION FORMS
146

PART 58 APPENDIX D SITE EVALUATION FORM FOR CARBON MONOXIDE (CO)

SITE NAME____________________________ 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 near-road 

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: Present number of SLAMS CO sites does not include trace level monitors at Seattle Beacon Hill, Seattle 10th & Weller. There is also 

trace level CO monitoring at Cheeka Peak.

MSA Description1 CBSA population2, 3 Minimum required 

number of SLAMS CO 

sites 

Present number of SLAMS

CO sites in MSA

Seattle-Tacoma-Bellevue, WA 3,439,809 2 0

Spokane, WA 527, 753 1 1

1

see http://www2.census.gov/econ/susb/data/msa_codes_2007_to_2011.txt 2

Minimum 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.
147

PART 58 APPENDIX D SITE EVALUATION FORM FOR PM10

SITE NAME____________________________ 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: * PM2.5 monitors are used in three locations in the Seattle-Tacoma-Bellevue, WA MSA as surrogates for PM10.

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 1

Selection of urban areas and actual numbers of stations per area will be jointly determined by EPA and the State agency. 2

High concentration areas are those for which ambient PM10 data show ambient concentrations exceeding the PM10 NAAQS by 20 percent 

or more.

3

Medium concentration areas are those for which ambient PM10 data show ambient concentrations exceeding 80 percent of the PM10

NAAQS.

4

Low concentration areas are those for which ambient PM10 data show ambient concentrations less than 80 percent of the PM10 NAAQS. 5

These minimum monitoring requirements apply in the absence of a design value.

MSA Description1 MSA population2, 3 Minimum required 

number of PM10 stations 

(from Table D-4)

Present number of PM10 

stations in MSA

Seattle-Tacoma-Bellevue, WA 3,439,809 2-4 3 PM2.5 surrogates

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

2

Minimum 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.
148

PART 58 APPENDIX D SITE EVALUATION FORM FOR NITROGEN DIOXIDE (NO2)

SITE NAME____________________________ 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: 

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 Areawide NO2 sites

Seattle-Tacoma-Bellevue, WA 3,439,809 2 1 1 1

1

see http://www2.census.gov/econ/susb/data/msa_codes_2007_to_2011.txt

2

Minimum 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.
149

PART 58 APPENDIX D SITE EVALUATION FORM FOR PM2.5

STATE__________ AGENCY_________________________________________________AQS AGENCY CODE__________

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 have 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 areawide 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.

 N/A

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 scheduled to begin operation on or before 01/01/2015 at the Seattle 10th & Weller site.

 **Regional background site: Seattle Beacon Hill. Regional Transport site: North Bend.

***STN site: Seattle Beacon Hill 
150

MSA Description1 MSA 

population

2,3

Design 

Value for 

years 

2011-

2013

Minimum required 

number of PM2.5 

SLAMS 

FRM/FEM/ARM 

sites (from Table D5)

Present number 

of PM2.5 

SLAMS 

FRM/FEM/AR

M sites in MSA

Present 

number of 

continuous 

PM2.5 

FEM/ARM 

analyzers in 

MSA

Present number 

of continuous 

PM2.5 STN 

analyzers in 

MSA

Seattle-Tacoma-Bellevue, WA 

3,439,809

32.5 3 5 5 1

Spokane, WA 527,753 25.7 1 1 1

Kennewick, WA 253,340 20.6 0 0 0

Olympia-Tumwater, WA 252,264 25.5 0 0 0

Bremerton-Silverdale, WA 251,133 * 0 0 1

Yakima, WA 243,231 * 0 0 1

Mt, Vernon-Anacortes, WA 116,001 10.0 0 0 0 1

see http://www2.census.gov/econ/susb/data/msa_codes_2007_to_2011.txt) 2

Minimum 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.

*Insufficient data.

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 <500K5 1 0 1

Minimum monitoring requirements apply to the Metropolitan statistical area (MSA).

2

Population based on latest available census figures. https://www.census.gov/

3

The PM2 5 National Ambient Air Quality Standards (NAAQS) levels and forms are defined in 

40 CFR part 50. 4

These minimum monitoring requirements apply in the absence of a design value.

5

Metropolitan statistical areas (MSA) must contain an urbanized area of 50,000 or more 

population.
151

PART 58 APPENDIX D SITE EVALUATION FORM FOR OZONE

STATE__________ AGENCY_________________________________________________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: Enumclaw, Mud Mountain is the max concentration site in Washington. Information regarding when Enumclaw was sited in July of 

1998 and whether EPA was consulted at that time is not available. Enumclaw has been included in the Annual Network Plan since it was 

established. 

Table D-2 of Appendix D to Part 58 - SLAMS O3 Monitoring Minimum 

Requirements

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-<350,0005 1 0 1

Minimum 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.

3

The ozone (O3) National Ambient Air Quality Standards (NAAQS) levels and forms are 

defined in 40 CFR part 50.

4

These minimum monitoring requirements apply in the absence of a design value. 5

Metropolitan statistical areas (MSA) must contain an urbanized area of 50,000 or more 

population.

MSA Descriptiona MSA 

population1, 2

Minimum required 

number of SLAMS O3 

sites (from Table D-2)

Present number 

of SLAMS O3 

sites in CBSA

Seattle-Tacoma-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
152

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
153

PART 58 APPENDIX D SITE EVALUATION FORM FOR SO2

STATE__________ AGENCY_________________________________________________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 3,439,809 13,671 47,026

1

see http://www.census.gov/population/metro/data/def html 2

Minimum 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
154

APPENDIX E SITE EVALUATION FORMS
155

PART 58 APPENDIX E SITE EVALUATION FORM FOR CO

SITE NAME____________________________ 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. 
156

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
157

PART 58 APPENDIX E SITE EVALUATION FORM FOR PM2.5, PM10, PM10-2.5,and Pb 

SITE NAME____________________________ 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. 
158

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.

2

Applicable 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____________________________ 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
159

PART 58 APPENDIX E SITE EVALUATION FORM FOR SO2

SITE NAME____________________________ 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. 
160

PART 58 APPENDIX E SITE EVALUATION FORM FOR O3

SITE NAME____________________________ 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

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.

2

Applicable for ozone monitors whose placement has not 

already been approved as of December 18, 2006. 
161

Appendix C

Vancouver, WA PM2.5 Site Relocation Assessment

The Southwest Clean Air Agency (SWCAA), in cooperation with the Department of Ecology (Ecology), operates 

one SLAMS fine particulate matter (PM2 5) monitor in Vancouver, Washington. The purpose of this of this 

monitor is to provide population-oriented, neighborhood-scale, PM2 5 pollution information for the greater 

Vancouver area. Data from this monitor are used to:

• Determine compliance with federal standards 

• Provide near‐real‐time air quality information for the protection of public health 

• Forecast air quality 

• Make daily burn decisions and curtailment calls 

• Assist with permitting activities 

• Evaluate the effectiveness of air pollution control programs 

• Evaluate the effects of air pollution on public health 

• Determine air quality trends 

• Identify and develop responsible and cost‐effective pollution control strategies 

• Evaluate air quality models 

Due to a pending property foreclosure at the former site, the monitoring site was moved to its current location at 

8121 NE Vancouver Plaza Dr. (530110023) on August 29, 2013. As shown in Figure 2, the current site is located 

approximately 200 meters northwest of the former site at 8205 NE 4th Plain Rd. (530110013). The PM2 5 monitor 

in use for the last two years at both of these sites is a Thermo Scientific 1405F Federal Equivalent Monitor 

(FEM), which ran from 10/01/2011 – 8/27/2013 at the 4th Plain Rd. site and from 9/04/2013 – present at the 

current Vancouver Plaza Dr. site.
162

Figure 2. Vancouver, WA current and past SLAMS sites for PM2.5 monitoring

During the months following the site relocation in late 2013, the FEM reported exceptionally high PM2.5

concentrations that were inconsistent with both historical trends at the 4th Plain Rd. site and concurrent 

data from nearby monitoring sites. In fact, during the fall of 2013, the Vancouver, Plaza Dr. monitor 

recorded a higher average concentration and exceeded the standard more often than any other site in the 

state. On multiple occasions, SWCAA and Ecology staff has observed smoke from a nearby residential 

chimney following a path directly to the monitor inlet. Ecology has determined that the Vancouver Plaza 

Dr. site meets neither the monitoring objective nor neighborhood-scale siting criteria based on the 

following factors, described in further detail below: 

a. discrepancies between PM2 5 concentrations measured in 2013 at the current site and in 2011-

2012 at the past site;

b. discrepancies between PM2 5 concentrations measured at the Vancouver Plaza Dr. site and those 

at other neighborhood-scale monitoring sites in the metropolitan area;

c. direct observations of smoke impacts from nearby residential chimneys; and 

d. results of a mobile monitoring campaign that showed the impact of local pollution sources at the 

Vancouver Plaza Dr. site. 

In March 2014, the Vancouver Plaza Dr. PM2.5 monitor was changed from neighborhood to microscale 

in AQS and collected data were flagged with a qualifier code of NS (Influenced By Nearby Source) to 

reflect the impact of local sources. Within the calendar year 2014, the state of Washington plans to move 

the Vancouver Plaza Dr. site to a location that meets neighborhood-scale siting criteria and satisfies the 

monitoring objective of providing population-oriented PM2 5 pollution information for the wider 

Vancouver area.
163

A. Comparison to Historical Vancouver Data 

During the 3-week period beginning November 23rd and ending December 12th, 2013 the Vancouver 

Plaza Dr. monitor recorded 13 exceedances of the federal 24-hour fine particle standard of 35 μg/m3. In 

contrast, the 4th Plain Rd. site reported only two exceedances in all of 2011 and none in 2012. The 

boxplots in Figure 3 show the distribution of 24-hour PM2.5 concentrations during the heating seasons of 

2011, 2012 and 2013. These show not only a marked increase in the median and 75th percentile of the 

PM2.5 data but also the large number of values greater than 35 μg/m3

 during the 2013 heating season. 

Given the short distance between the two sites, the most likely explanation for this rapid increase is the 

impact of local sources on the current monitoring site in late 2013. 

Figure 3. Vancouver, WA 24-hour PM2.5 concentrations by heating season and location

B. Comparison to Nearby Monitoring Sites 

Several other sites in the Portland-Vancouver-Beaverton, OR-WA metropolitan statistical area monitor 

PM2.5. The two sites closest to Vancouver are the Portland SE Lafayette site approximately 10 miles 

south of Vancouver Plaza Dr. and the Beaverton Highland Park School site approximately 17 miles 

southwest. Both sites measure PM2.5 using continuous nephelometers; the SE Lafayette site 

nephelometer is collocated with a filter-based Federal Reference Method (FRM) PM2.5 sampler. 
164

During the 3-week period in November and– of December 2013 in which the Vancouver Plaza Dr. site 

reported 13 exceedances of the federal 24-hour PM2.5 standard, the SE Lafayette and Beaverton monitors 

reported 4 and 5 exceedances, respectively. Figure 4 shows a time-series graph of hourly PM2.5 

concentrations at the three monitors spanning the stagnation event across the area. While the three 

monitors showed generally good agreement, the Vancouver FEM reported a series of large spikes in 

quick succession that were not seen on the other two monitors. Though this may be partially explained 

by differences in instrument response between FEMs and nephelometers, the large magnitude of these 

spikes indicates that the Vancouver monitor was affected by local sources that did not impact the other 

two sites. 

Figure 4. Time-series graph of Vancouver-area hourly PM2.5 values during the fall 2013 stagnation event

C. Local Source Impacts

On multiple occasions during the 2013 heating season, staff observed smoke from a nearby chimney 

travel approximately 100 meters west across the adjoining field into the direct path of the FEM inlet, as 

shown in Figures 4, 5 and 6. Rapid increases in the FEM’s reported concentration corresponded with 

these observations. 
165

Figure 5. Close-up map of monitoring site and nearby chimneys

Figure 6. Nearby chimney smoke observation 1 looking east, 11/22/2013

Monitoring site fence

Chimney smoke

Monitoring site

Residential 

chimney

s (east 

and 
166

Figure 7. Nearby chimney smoke observation 2 looking east, 12/05/2013

A temporary wind sensor was installed at the Vancouver Plaza Dr. site on January 10, 2014, to provide 

further information on the impacts of local meteorology on PM2.5 concentrations. The pollution rose in 

Figure 8 shows wind direction data by PM2.5 level for a period of elevated concentrations from January 

18 – February 5, 2014. These results show that the predominant wind direction at the site was from the 

south. However, when PM2.5 concentrations exceeded 35 μg/m3, winds were most likely to originate in 

the east and southeast, from the direction of the nearby chimneys. 

FEM inlet

Chimney smoke
167

Figure 8. Vancouver Plaza Dr. PM2.5 pollution rose, 1/18/14-2/05/14.

D. Mobile Monitoring Results

To evaluate whether the concentrations measured at the Vancouver Plaza Dr. site were representative of 

PM2.5 levels across broader Vancouver, a mobile monitoring campaign was conducted during a brief 

stagnation event between 7pm on 1/21/14 and 8am on 1/22/14. A Radiance Research M903 

nephelometer was positioned in the rear seat of a passenger vehicle with its inlet outside the rear 

window (see Figure 9). The vehicle was driven on an approximately 35-mile route through residential 

Vancouver and its northern suburbs. This route was repeated 3 times during the late evening and early 

morning. The nephelometer reported 2.5 σsp data points per second, which were later aggregated to 1-

second intervals. A handheld Garmin GPS collected the geographic coordinates of the vehicle location 

once per second. 
168

Figure 9. Mobile nephelometer setup

The σsp and geographic coordinates were paired using their common timestamps. The geometric means 

of σsp points within 300 meters were calculated for a grid of evenly spaced points 50 meters apart. The 

map in Figure 10 shows these aggregated PM2.5 concentrations across the mobile monitoring route. 

Concentrations are represented in units of μg/m3 based on a correlation developed at the 4th Plain Rd. 

site in 2011. 
169

Figure 10. Vancouver mobile monitoring results, 1/21-1/22/14

The Vancouver Plaza Dr. site shown with the blue triangle is at the center of the area with the highest 

concentrations measured during the mobile monitoring campaign. The residential areas with similar 

terrain north of 18th St. are largely represented in yellow and orange. This area of elevated 

concentrations around the Vancouver Plaza Dr. monitor is only a few hundred meters wide, again 

indicating the influence of local sources instead of a neighborhood-wide trend. 

Next Steps

In light of the large difference between PM2.5 concentrations measured before and after the site 

relocation, the contrast between measured values in Vancouver and those at other nearby monitoring 

sites, and evidence of the impact of local sources, the state of Washington has updated the siting scale of 

the Vancouver SLAMS site to microscale, flagged the data in AQS, and is planning to relocate the 

monitor to an appropriate location for population oriented, neighborhood-scale monitoring by the end of 

2014. 
170

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/R99-022, 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.