1

SACRAMENTO METROPLITAN

AIR QUALITY MANAGEMENT DISTRICT

2012

ANNUAL MONITORING

NETWORK PLAN

SMAQMD

Program Coordination Division

777 12th Street, 3rd Floor

Sacramento, CA 95814

(916)874-4800
2

TABLE OF CONTENT

Table of Content.............................................................................................................. 2

List of Abbreviations and acronyms ................................................................................ 3

1. Introduction .............................................................................................................. 6

2. Overview of Network Operations.............................................................................. 6

2.1 Monitoring Objectives and Spatial Scales..................................................... 10

3. Minimum Monitoring Requirements........................................................................ 12

4. Recent and Proposed Modifications to the Network............................................... 15

5. PM Collocation Requirement ................................................................................. 16

6. Process to review changes to PM2.5 Monitoring Network....................................... 17

7. Data Submission Requirements............................................................................. 17

8. Review of existing SMAQMD/CARB Air Monitoring Sites ...................................... 17

9. Bibliography ........................................................................................................... 19

APPENDIX A - Comparison of Number of PM2.5 Monitors by Area and Population .... 20

APPENDIX B - Current Detailed Site Information ......................................................... 21

B.1 Sacramento-Branch Center #2 ..................................................................... 21

B.2 Elk Grove-Bruceville ..................................................................................... 23

B.3 Sacramento-Del Paso Manor........................................................................ 28

B.4 Sacramento-El Camino/Watt ........................................................................ 35

B.5 Folsom-Natoma Street.................................................................................. 37

B.6 Sacramento – Goldenland Court................................................................... 41

B.7 North Highlands-Blackfoot ............................................................................ 45

B.8 Sloughhouse................................................................................................. 48

B.9 Sacramento Health Dept-Stockton Blvd........................................................ 51

B.10 Sacramento-1309 T Street ........................................................................ 53

B.11 Rancho Seco ............................................................................................. 57

APPENDIX C – Near-road NO2 Monitoring ................................................................... 59
3

LIST OF ABBREVIATIONS AND ACRONYMS

AADT Annual average daily traffic

ADT Average daily traffic

AGL Above ground level

AIR Sacramento-Airport Road Air Monitoring Site

ARM Approved Regional Monitor

AQS Air Quality System

BAM Beta Attenuation Monitor

BC Sacramento-Branch Center #2 Air Monitoring Site

BL General/Background

BRU Elk Grove-Bruceville Air Monitoring Site

Caltrans California Department of Transportation

CARB California Air Resources Board

CSN Chemical Speciation Network

CFR Code of Federal Regulations

CO Carbon Monoxide

DPM Sacramento-Del Paso Manor Air Monitoring Site

ECW Sacramento-El Camino/Watt Air Monitoring Site

EPA U.S Environmental Protection Agency

ER Emission ratio

ERG Eastern Research Group, Inc.

FE AADT Fleet equivalent annual average daily traffic

FEM Federal Equivalent Method

FID Flame Ionization Detector

FOL Folsom-Natoma Air Monitoring Site

FRM Federal Reference Method

GC Gas Chromatography

GOL Sacramento-Goldenland Court Air Monitoring Site

HC Highest Concentration

IM Source Impact
4

M Meters

MET Meteorological sensor

MI Microscale

MS Middle Scale

MSA Metropolitan Statistical Area

NAAQS National Ambient Air Quality Standard

NCORE National Core, a multi-pollutant ambient monitoring network

NDIR Non-dispersive Infrared Spectrometry

NH North Highlands-Blackfoot Air Monitoring Site

NMHC Non-Methane Hydrocarbon

NO2 Nitrogen Dioxide

NOX Oxides of Nitrogen

NOY Reactive Oxides of Nitrogen

NPAP National Performance Audit Program (Criteria pollutant monitors)

NPEP National Performance Evaluation Program (PM2.5 FRM)

NS Neighborhood Scale

O3 Ozone

PAMS Photochemical Assessment Monitoring Sites

Pb Lead

PEP Performance Evaluation Program (PM2.5 FRM)

PM Particulate Matter

PM2.5 Particulate Matter 2.5 micron

PM10 Particulate Matter 10 micron

PM-Coarse Particulate Matter > 2.5 micron and < 10 micron (PM10-2.5)

PPB Parts per Billion

QA Quality Assurance

QAPP Quality Assurance Project Plan

QMP Quality Management Plan

RC Representative Concentration

RH Relative Humidity

RS Rancho Seco monitoring site

RTI Research Triangle Institute
5

SASS PM2.5 Speciation sampler 

SCK Sacramento Health Department-Stockton Blvd. Air Monitoring Site

SFNA Sacramento Federal Nonattainment Area

SIP State Implementation Program

SJV San Joaquin Valley

SLAMS State and Local Air Monitoring Sites

SLU Sloughhouse Air Monitoring Site

SMAQMD Sacramento Metropolitan Air Quality Management District

SO2 Sulfur Dioxide

SO4 Sulfate

SPM Special Purpose Monitoring

SRD Solar Radiation

SSI Size Selective Inlet (PM10 FRM sampler)

STN Speciation Trends Network

TAPI Teledyne Advanced Pollution Instrumentation

TCCR Transportation Corridor Concept Report

TEI Thermo Environmental Instruments

TEOM Tapered Element Oscillating Microbalance

THC Total Hydrocarbon

TNMHC Total Non-methane hydrocarbon

TST Sacramento-T Street Air Monitoring Site

US Urban Scale

UV Ultraviolet

VCAPCD Ventura County Air Pollution Control District

VOC Volatile Organic Compounds

VSCC Very Sharp Cut Cyclone

WD Wind Direction

WF Welfare Based

WS Wind Speed
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1. INTRODUCTION

State and Local agencies that conduct ambient air monitoring for regulatory purposes 

are required, by Title 40, Code of Federal Regulations, Part 58.10, to submit an Annual 

Monitoring Network Plan to the U.S. Environmental Protection Agency (EPA), no later 

than July 1st, each year, starting July 1, 2007. The report must contain specific 

monitoring network information and the report must be presented for a 30-day public 

review period prior to submittal to EPA. This report covers the period: January 1, 2011-

December 31, 2011.

The primary purpose of this ambient air monitoring network report is to document the 

existing Sacramento County State and Local Air Monitoring sites (SLAMS), National 

Core (NCore) multi-pollutant monitoring stations, Chemical Speciation Network (CSN), 

Special Purpose Monitoring (SPM), and Photochemical Assessment Monitoring (PAMS) 

sites, operated by our District and California Air Resources Board (CARB), and to show 

that the ambient air monitoring network meets the requirements of 40 CFR 58, including 

Appendix A, C, D, and E, where applicable. The report will include the Federal 

Reference Method (FRM), Federal Equivalent Method (FEM), and Approved Regional 

Method (ARM) monitors. Though not required by 40 CFR Part 58, the report also 

discusses additional SPM monitoring instrumentation being operated, such as 

Aethalometers and Nephelometers, and surface/upper air meteorological sensors 

required for the PAMS program. The secondary purpose of this report is to discuss 

proposed changes (additions, relocations, and terminations of non-SPM monitors) in the 

ambient air monitoring network that may be proposed to occur within an 18 month 

period following submittal of this report.

This report is not an "in depth" analysis of the local air monitoring network design. An indepth analysis of the monitoring network is required every 5 years to determine, at a 

minimum, if the network meets the monitoring objectives defined in 40 CFR Part 58 

Appendix D, whether new sites are needed, whether existing sites are no longer 

needed, and whether new technologies are appropriate for incorporation in to the 

ambient air monitoring network.

2. OVERVIEW OF NETWORK OPERATIONS

The County of Sacramento is located in the middle of California's Central Valley, at the 

southern end of the Sacramento Valley. Sacramento County has a population of 1.4 

million1. Sacramento County is the most populated part of the Sacramento--Arden 

Arcade--Roseville, California Metropolitan Statistical area (MSA) which includes the 

western sections of Placer and El Dorado County, Yolo County, and parts of Solano and 

Sutter Counties. The Sacramento MSA is the 24th largest MSA in the USA by 

population, with 2.2 million people1. The Sacramento MSA is a non-attainment area for 

the Federal 8 hr averaged O3 standard and is referred to as the Sacramento Federal 

Nonattainment Area (SFNA). This network plan focuses on the monitors that are 

operated within Sacramento County. For details on the monitors operated in the other 

 

1

2010 U.S. Census
7

counties within the SFNA, please refer to the Annual Monitoring Network Report for 

Small Districts in California dated June 2011 prepared by CARB

(http://www.arb.ca.gov/aqd/amnr/smnetrpt11.pdf). 

Sacramento County is a nonattainment area for the Federal O3 and PM2.5 standards. 

Sacramento County is in attainment for the Federal CO, NO2, and SO2 standards. It 

has attained the Federal PM10 standard and has requested resignation to attainment 

status. Sacramento County is a non-attainment area for the California O3, PM10, and 

PM2.5 health standards. The California Air Resources Board recommended that EPA 

designate Sacramento County as unclassified for the 2008 Federal Pb standard.

The primary focus of the current ambient air monitoring network is the collection of O3

and photochemical pollutant precursors such as NOX and VOC, and PM2.5 data to 

support SIP development, attainment/non-attainment decisions, public notification, and 

data for air quality modeling efforts. Sacramento is one of 24 areas in the nation that 

are required to operate PAMS. Sacramento is one of the 54 areas in the US, with a 

PM2.5 CSN trend site. The map below identifies the locations of current air monitoring 

stations within Sacramento County, whether they are a SLAMS site or not. Figure 2-1 

shows the approximate location of each monitoring station in Sacramento County. 

Table 2-1 gives detailed information of each station, including location, AQS ID, 

pollutants monitored and designates whether it is a SLAMS site.
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Figure 2-1

Map of monitoring stations in Sacramento County
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Table 2-1

List of monitoring sites in Sacramento County

Site Name Purpose AQS ID Pollutants/Parameters 

Monitored

Sacramento-Branch 

Center Rd #2

SLAMS 06-067-0284 PM10-SSI

Elk Grove-Bruceville 

Road

SLAMS/ 

PAMS

06-067-0011 O3, NO2, Total NMHC, 

Speciated VOC, PM2.5 BAM, 

Ambient Temp., Wind Dir., 

Wind Speed, Relative Humidity, 

Barometric Pressure, 

Precipitation, Ultraviolet Rad., 

Solar Rad., Upper Level 

Meteorology (Wind Dir., Wind 

Speed, Virtual Temp.)

Sacramento-Del 

Paso Manor

SLAMS/ 

PAMS/ 

CSN/

NCORE/

SPM

06-067-0006 O3,CO (trace level),NO2, NOy, 

SO2 (trace level),Total NMHC, 

Speciated VOC, Carbonyl, 

PM2.5 BAM, PM2.5 FRM (main & 

collocated), PM10 SSI (main & 

collocated), Speciated PM2.5

(SASS, URG 3000N), Black 

Carbon, Scattering Coeff., 

Ambient Temp., Wind Dir., 

Wind Speed, Relative Humidity,

Solar Rad.

Sacramento-El 

Camino/Watt

SLAMS 06-067-0007 CO

Folsom-Natoma 

Street

SLAMS/ 

PAMS

06-067-0012 O3, NO2, Total NMHC, 

Speciated VOC, PM2.5 BAM, 

Ambient Temp., Wind Dir., 

Wind Speed, Relative Humidity, 

Solar Rad.

SacramentoGoldenlandSLAMS/

PAMS

06-067-0014 O3, CO, NO2, Total NMHC, 

PM10 TEOM, PM10 SSI, 

Ambient Temp, Wind Dir., Wind 

Speed, Relative Humidity, 

Solar Rad.

North HighlandsBlackfoot WaySLAMS/ 

SPM

06-067-0002 O3, CO, NO2,, PM10 SSI

Sacramento Health 

Dept-Stockton Blvd.

SLAMS 06-067-4001 PM2.5 FRM, PM10 TEOM, PM10

SSI

Sloughhouse SPM 06-067-5003 O3, Wind Dir., Wind Speed, 

PM2.5 E-BAM (winter PM2.5

SPM study)
10

Table 2-1 (cont.)

Site Name Purpose AQS ID Pollutants/Parameters 

Monitored

Sacramento-1309 T 

Street

SLAMS 06-067-0010 O3, NO2, PM10 SSI, PM2.5 BAM, 

PM2.5 FRM, Speciated PM2.5

(SASS, URG 300N), Ambient 

Temp., Wind Dir., Wind Speed, 

Relative Humidity, Barometric 

Pressure 

Walnut Grove Tower Upper Air 

Research 

N/A Upper level ozone and met 

(Wind Dir., Wind Speed, and 

Ambient Temp.) 

Rancho Seco SPM N/A PM2.5-E-BAM (winter PM2.5

SPM study)

2.1 MONITORING OBJECTIVES AND SPATIAL SCALES

The basic three monitoring objectives are to: 1) provide air pollution data to the general 

public in a timely manner; 2) support compliance with ambient quality standards and 

emissions strategy development; and 3) support air pollution research studies. To 

support these monitoring objectives there are a variety of types of monitoring sites 

including sites located to determine the highest pollutant concentration, the 

representative concentrations in areas of high population density, the impact of major 

pollution emissions sources, the general background concentration levels, the extent of 

pollutant transport, and impacts on visibility, vegetation, and other welfare-based 

impacts.

The physical sitting of an air monitoring station must achieve a spatial scale of 

representativeness that is consistent with the monitoring objective of the monitor. The 

spatial scale results from the physical location of the site with respect to the pollutant 

sources. It estimates the size of the area surrounding the monitoring site that 

experiences uniform pollutant concentrations. Table 2-2 shows the different types of 

site and the appropriate spatial scale. Table 2-3 shows each of the monitoring sites in 

Sacramento County and its criteria pollutant monitoring objectives and spatial scales.

The categories of spatial scale are:

 Microscale – An area of uniform pollutant concentration ranging from several 

meters up to 100 meters

 Middle Scale – Uniform pollutant concentrations in an area of about 100 meters 

to 0.5 kilometers

 Neighborhood Scale – An area with dimensions in the 0.5 to 4.0 kilometer 

range

 Urban Scale – Citywide pollutant conditions with dimensions ranging from 4 to 

50 kilometers

 Regional Scale – A large area, usually rural, of the same general geography and 

without large sources that extends from tens to hundreds of kilometers
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Table 2-2

Site Type and Associated Spatial Scale

Site Type Appropriate Spatial Scale

Highest Concentration Micro, Middle, Neighborhood

Population Exposure Neighborhood, Urban

Source Impact Micro, Middle, Neighborhood

General/background levels Urban, Regional

Regional transport Urban, Regional

Welfare-Related Urban, Regional

Table 2-3

Sacramento County Air Monitoring Station Site Types

Site Type

HC – High concentration

RC - Representative Concentration

IM – Source Impact

BL – General/Background

WF – Welfare-based

Spatial Scale

MI – Microscale

MS – Middle scale

NS – Neighborhood scale

US – Urban scale

Site Name O3 CO NO2 SO2 VOC PM2.5 PM10

SacramentoBranch Center Rd 

#2

RC/NS

Elk GroveBruceville Rd

RC/NS RC/NS BL/NS BL/NS

Sacramento-Del 

Paso Manor

HC/NS RC/NS RC/NS HC/NS HC/NS HC/NS RC/NS

Sacramento-El 

Camino Watt

HC/MI

Folsom – 50 

Natoma

HC/NS HC/NS RC/NS RC/NS

SacramentoGoldenland Ct.

RC/NS RC/NS HC/NS HC/NS RC/NS

North HighlandsBlackfoot Way

RC/NS RC/NS RC/NS RC/NS

Sacramento 

Health Dept –

Stockton Blvd.

RC/NS RC/NS

Sloughhouse RC/NS

Sacramento-1309 

T Street

RC/US RC/MS RC/NS HC/NS
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3. MINIMUM MONITORING REQUIREMENTS

Sacramento County is within the Sacramento-Arden Arcade-Roseville MSA as 

discussed in Section 2. The minimum number of monitors for each pollutant is based 

on the MSA population as described in 40 CFR 58 Appendix D. For current National 

Ambient Air Quality Standards, please refer to the NAAQS Table 

(http://epa.gov/air/criteria.html).

Details of the minimum monitoring requirements of all criteria pollutants are provided in 

tables 3-1, 3-2, and 3-3. Minimum monitoring requirement is based on the population of

Sacramento-Arden Arcade-Roseville MSA, which is 2.2 million according to 2010 U.S. 

Census. Sacramento-Arden Arcade-Roseville MSA is composed of El Dorado, Placer, 

Sacramento, and Yolo Counties. 
13

Table 3-1

Sacramento MSA Design Value and Monitoring Requirement, Part 1

Pollutant & Type

2009-2011

Design 

Value Design Value Site

# of 

Required 

Monitors

# of Active 

Monitors(# within 

Sacramento County)

Add’t 

Monitors 

Needed

Met

Minimum 

Monitoring 

Requirements?

O3 8-hr 0.095 ppm Folsom-Natoma St, 

06-067-0012

2 15 (7) 0 Yes

PM2.5 SLAMS

Annual

10.0g/cu.m Sacramento-Del Paso 

Manor, 06-067-0006

3 FRM, 5 (3) FRM 0 Yes

SLAMS

Daily

35g/cu.m Sacramento-Del Paso 

Manor, 06-067-0006

Continuous

Annual

N/Aa N/Aa2 BAM 9 (4) BAM 0 Yes

Continuous 

Daily

N/Aa N/Aa

a Current PM2.5 BAM monitors are not FEM, thus not comparable to NAAQS as per Appendix N to 40 CFR Part 50

Table 3-2

Sacramento MSA Design Value and Monitoring Requirement, Part 2

Pollutant & Type

2011

Max Conc. Max Conc. Site

# of 

Required 

Monitors

# of Active 

Monitors(# within 

Sacramento County)

Add’t 

Monitors 

Needed

Met

Minimum 

Monitoring 

Requirements?

PM10 69 g/cu.m Sacramento-Branch 

Center #2, 06-0667-0284

2-4 10 (6) SSI 0 Yes
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Table 3-3

Sacramento MSA Design Value and Monitoring Requirement, Part 3

Pollutant & Type

# of 

Required 

Monitors

# of Active Monitors

(# within Sacramento 

County)

Add’t 

Monitors 

Needed Additional Information

Met

Minimum 

Monitoring 

Requirements?

NO2 Area-wide 2

a

8 (6) 0 Maximum AADT: 246,000 Yes

Near-road 1 0 (0) 1

b

SO2 1

c

1 (1) 0 876 Tons SO2/Year;

PWEI 1927 million persons-tons per year

Yes

CO 2

d

0 1

e Yes

Pb 1

f

1 (1) 0 NCore Site:

Sacramento-Del Paso Manor, 06-067-

0006

Yes

a

Two monitors needed per PAMS requirement, one of which also serves as the required area-wide NO2 monitor

b Near-road NO2 monitor is required to be operational by January 1, 2013, per 40 CFR 58.13(c)

c

Trace level monitor required at the NCore site

d One trace level monitor required at the NCore site, which also satisfies the requirement to have one CO monitor as per the CO 

Maintenance Plan; the second monitor is a required near-road monitor per as Appendix D to 40 CFR Part 58

e Near-road CO monitor is required to be operational by January 1, 2017, per 40 CFR 58.13(e)(2)

f Required at the NCore site, source oriented lead monitor is not required in this MSA since there is no point source that emits 

more than 0.5 tpy or airport that emits more than 1.0 tpy based on the National Emission Inventory

(http://www.epa.gov/ttnchie1/trends/).
15

4. RECENT AND PROPOSED MODIFICATIONS TO THE NETWORK

Sacramento-Bercut Dr. (Proposed Site)

Contingent on approval from the EPA, Bercut Dr. is tentatively selected as the nearroad NO2 site required by the new NO2 monitoring requirement. Appendix C to this 

network plan discusses site selection criteria and the rationale for locating the near-road 

NO2 station at this location.

As per Appendix D to 40 CFR Part 58, this station will monitor the required pollutants –

NO2 and CO – as well as optional pollutants and meteorological parameters – black 

carbon, wind direction, wind speed, temperature, and relative humidity. This air 

monitoring station was required to be installed and operational by January 1, 2013. 

However, EPA advised that they plan to revise 40 CFR 58 to extend the deadline 

January 1, 2014, for CBSA with population greater than 1 million, during the 2012 Air 

Quality Conference.

Elk Grove-Bruceville Rd.

The District is considering to discontinue the speciated VOC measurement. As per 

Appendix D to 40 CFR Part 58, only two speciated VOC measurement sites are 

required per PAMS network area. Sacramento-Del Paso Manor (type II PAMS) and 

Folsom-Natoma St. (type III PAMS) satisfy this requirement. Speciated VOC 

measurement collected at this site is insignificant due to its low, background 

concentration.

Sacramento-Del Paso Manor 

In March 2012, the District was added to EPA’s national lead analysis contract. Thus, 

lead sampling began in April 2012 using with a PM10 low volume sampler. As per 40 

CFR 58, Appendix C, Section 2.10.2, the District will install and operate a Pb-TSP 

sampler at Sacramento-Del Paso Manor within six months, if the maximum Pb-PM10

three-month arithmetic mean concentration is greater than or equal to 0.10 ug/m3. The 

District also may cease operation of the Pb-PM10 sampler when the Pb-TSP sampler 

becomes operational.

The District plans to replace the existing non-FEM PM2.5 BAM monitor with an FEM by 

November 1, 2012. This FEM monitor will operate continuously and thus satisfy the 

sampling requirement in 40 CFR 58.12(d). The non-FEM monitor will be relocated to 

Sloughhouse.

The District is evaluating to shut down the Nephelometer. It is a PM related instrument 

installed in 1999 for California Regional Particulate Air Quality Study. After the study 

ended, the monitor was not removed and became a special purpose monitor in 2001. 
16

Sacramento-El Camino/Watt 

In September 2011, EPA approved the District’s site termination request due to a 

street/sidewalk improvement project in 2012 that requires termination or relocation of 

this air monitoring station. The termination process was postponed, as the 

street/sidewalk project was delayed until April 2013. This site will be terminated in early 

2013 when the project proceeds. 

Sacramento-Goldenland Ct 

The District is evaluating to terminate this site. Sacramento-Goldenland Ct. is a 

redundant secondary type II PAMS, as nearby Sacramento-Del Paso Manor is a 

primary type II PAMS that measures a full suite of VOC. Furthermore, preliminary 

analysis shows this site does not measure the highest concentration of criteria 

pollutants. If this site is terminated, there are still enough number of monitors within this 

CBSA to satisfy the monitoring requirement in Appendix D to 40 CFR Part 58.

North Highlands-Blackfoot Way 

The District is considering to reorganize this site. North Highland-Blackfoot Way was 

originally sited to support a proposed power plant project at McClellan AFB, which was 

canceled during the early 1980s. The District is considering to request approval for 

termination of PM10 SSI sampler. Also, the district is evaluating to adapt a seasonal 

sampling schedule for O3 and CO. Staff resource used to support this air monitoring 

site would reassigned to support the new NO2 near roadway monitoring sites. 

Sacramento Health Dept.-Stockton Blvd.

The District will submit a request for termination of the PM10 TEOM and PM2.5 FRM at 

this site. The PM10 SSI is not necessary, as the remaining number of SSI samplers is 

more than the required number of SSI samplers, etc. The TEOM data is not usable for 

forecasting or analysis due to negative bias during the winter time when there is wood 

combustion. The PM2.5 FRM is redundant, as it collects the same PM2.5 data as the 

nearby T St site.

Sloughhouse

A non-FEM PM2.5 BAM monitor will be relocated from Sacramento-Del Paso manor in 

November 2012. It will replace the existing PM2.5 E-BAM (SPM).

5. PM COLLOCATION REQUIREMENT

Quality Assurance Requirements for SLAMS found in Appendix A to 40 CFR Part 58 

requires collocation for PM10, PM2.5 FRM and FEM, and PM10-2.5 monitors. Section 3 in 

the appendix states that each method within a ―primary quality assurance organization 

(PQAO) must have 15 percent of the monitors collocated.‖
17

SMAQMD is a small air quality management district and does not maintain a PQAO. 

Collocated monitors operated by SMAQMD are part of the CARB PQAO. Currently, 

PM2.5 FRM and PM10 FRM monitors at Sacramento-Del Paso Manor are collocated. 

For complete details on PM collocation, please refer to the Section 6, Required Quality 

Assurance of the Monitoring Program, in the Annual Monitoring Network Report for 

Small Districts in California dated June 2011 prepared by CARB

(http://www.arb.ca.gov/aqd/amnr/smnetrpt11.pdf).

6. PROCESS TO REVIEW CHANGES TO PM2.5 MONITORING NETWORK

40 CFR Part 58 requires that this Annual Monitoring Plan to ―document how State and 

Local Agencies provide for the review of changes to a PM2.5 monitoring network that 

impact the location of a violating PM2.5 monitor or the creation/change to a community 

monitoring zone, including a description of the proposed use of spatial averaging for 

purposes of making comparisons to the annual PM2.5 NAAQS as set forth in Appendix N 

to Part 58 in 40 CFR 58. The affected State or local agency must document the 

process for obtaining public comment and include any comments received through the 

public notification process within their submitted plan.‖ Note that spatial averaging does 

not apply in California because the state and local air monitoring districts collectively 

elected not to establish community monitoring zone in the 1990s.

An informational comparison, not required by air monitoring regulation, on the number 

of PM2.5 monitors by area and population has been included. The analysis can be 

found in Appendix A.

The general process for any proposed change to the monitoring network is that the 

proposed change is discussed in this Annual Monitoring Plan. Then, during spring, 

each year, this Annual Monitoring Plan will be sent by SMAQMD to CARB/TSD for 

review and comment. Prior to June 1, each year, this report will be posted to our 

District Website for no less than 30 days, for public review and comment. During late 

June, each year, the finalized Annual Monitoring Plan and comments on the Plan will be 

forwarded to EPA-Region IX, prior to the July 1 deadline. 

7. DATA SUBMISSION REQUIREMENTS

 2011 Precision/Accuracy reports submitted to AQS: Spring 2012

 2011 Annual data certification submitted: May 2012 (by CARB)

8. REVIEW OF EXISTING SMAQMD/CARB AIR MONITORING SITES

For each monitor at each monitoring site, the tables in Appendix B were used to 

determine if each monitor meets 40 CFR 58 requirements, including Appendix A (QA 

Requirements), C (FRM/FEM/ARM Requirements), D (Network Design Criteria), and E 

(Probe Sitting Criteria), when applicable. The SMAQMD ambient air monitoring 

network meets the requirements of 40 CFR 58 including Appendix A, C, D, and E.
18

(For site photos, site surveys, and site location maps, please refer to California Air 

Resources Board Website at http://www.arb.ca.gov/qaweb/site.php) 
19

9. BIBLIOGRAPHY

Air Monitoring Quality Assurance: Volume II, California Air Resources Board/Monitoring 

and Laboratory Division, Sacramento, CA, February 2000.

Air Monitoring Site List (Site Surveys), California Air Resources Board/Monitoring and 

Laboratory Division Web Site (www.arb.ca.gov) 

Air Quality Data Summaries, California Air Resources Board/Planning and Technical 

Services Division Web Site (www.arb.ca.gov)

CRPAQS Initial Data Analysis of Field Program Measurements (Draft Final Report), 

Desert Research Institute, Reno, NV, July 29, 2005

Federal Register, 40 CFR Parts 53 and 58, October 17, 2006

Near-Road NO2 Monitoring Technical Assistance Document, Draft, U.S. Environmental 

Protection Agnecy/OAQPS, December 21, 2011

SI 473 Course, Introduction to Environmental Statistics, Air Pollution Training Institute, 

US Environmental Protection Agency.

SMAQMD Air Monitoring Network Review, Sacramento Metropolitan AQMD/Program 

Coordination Division, August 15, 2005

State and Local Air Monitoring Network Plan, California Air Resources Board/Planning 

and Technical Support Division, Sacramento, CA, June 2008.
20

APPENDIX A - COMPARISON OF NUMBER OF PM2.5 MONITORS BY AREA AND 

POPULATION

The Sacramento MSA has a total of 16 PM2.5 monitors: 5 FRM, 9 BAM, and 2 SASS 

monitor. 8 of the 16 PM2.5 monitors are located in areas of high population density to

monitor for population exposure.

To illustrate how the Sacramento MSA compares to other air districts in terms of 

monitoring PM2.5, a comparison of the number of PM2.5 monitors by geographic area 

and population in several air districts in California is shown in the table below.

Table A-1

Comparison of Number of PM2.5 Monitors in Several Air Basins

District Square 

Miles

Population 

(millions)

Number of 

PM2.5 Monitors 

PM2.5 Monitors 

per person

PM2.5 Monitors 

per square mile

Bay Area 5,340 6.8 20 1 per 340,000 1 per 267

Sacramento 

MSA

5,309 2.1 16 1 per 131,350 1 per 332

South Coast 15,000 16.5 33 1 per 500,000 1 per 455

San Joaquin 

Valley

25,000 3.9 26 1 per 150,000 1 per 962

The numbers of PM2.5 monitors per person show that the Sacramento MSA has a higher 

than average number of monitors per person. The numbers of PM2.5 monitors per 

square mile show that the Sacramento MSA has a higher than average number of 

monitors per square mile.

However, caution should be used when doing these types of comparisons, as these four 

Districts have different ratios of urbanized area vs. rural areas and rural vs. urban 

population, etc. For example, Bay Area has a similar size (number of square miles) 

compared to the Sacramento MSA, but Bay Area has a higher population density per 

square mile, in the urbanized areas. San Joaquin Valley has a highest amount of area, 

more rural population, and lowest population density per square mile. In addition, San 

Joaquin Valley has the typical PM2.5 sources of motor vehicles and residential wood 

combustion, but it also has agricultural sources of PM2.5. Thus, the size of a monitoring 

network is largely determined by the number of monitors needed to satisfy the 

local/regional monitoring needs, depending upon the unique features and needs of that 

District. 
21

APPENDIX B - CURRENT DETAILED SITE INFORMATION

B.1 SACRAMENTO-BRANCH CENTER #2

Sacramento-Branch Center #2 is a PM10 SSI site. This site was established, in 

early 2006, to replace the former Sacramento-Branch Center site, which was 

approximately one-quarter mile to the north.

The objective of this site is to measure the representative concentration, as 

documented in the original site initiation reports filed in the late 1980s. The old 

site was relocated since nearby trees were a flow obstacle.

Site Name Sacramento-Branch Center #2

AQS Site No. 06-067-0284

Geographic Coordinates 38.553611°, -121.336111° (NAD27)

Location Rooftop of building in middle of County 

Maintenance Yard, located 10 miles eastsoutheast of downtown Sacramento.

Address 3847 Branch Center Road, Sacramento, CA 

95827

County Sacramento

Distance from roadway 40 m

Average Daily Traffic 26,274 (Bradshaw Road) Vehicles/Day 

(SACDOT, 2010)

Ground Cover Paved

Representative Area (MSA) Sacramento--Arden-Arcade--Roseville, CA
22

Particulate Samplers:

Site Sacramento-Branch Center

Start Date 4/1/06

Collecting Agency SMAQMD

Analytical Lab SMAQMD

Reporting Agency CARB

Pollutant PM10

Parameter code 81102

POC 1

Instrument manufacturer and model Sierra Anderson 1200

Sampling method Hi-Volume/Size Selective Inlet

Sampling method code 063

FRM/FEM/ARM/Other FRM

Suitable for comparison against annual PM2.5 N/A

Monitoring objective NAAQS Comparison

Monitor type SLAMS

Site type Highest concentration

Spatial scale Neighborhood

Current sampling frequency 1:6

Sampling season Year Round

Distance from supporting structure (m) 1.7

Distance from obstructions on roof (m) N/A

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

Distance from trees (m) 30

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

Distance between collocated monitors N/A

Unrestricted airflow >= 270 deg arc Yes

Probe height (m, agl) 6.2

Probe material N/A

Residence time N/A

Any changes in the next 18 months? No

Frequency of flow rate verification for PM 

monitors Monthly

Last two semi-annual flow rate audits for PM 

monitors

3/8/11

10/6/11
23

B.2 ELK GROVE-BRUCEVILLE

Sited in a rural area 4 miles south of Elk Grove, CA, Bruceville air monitoring site 

was initiated in 1992. It replaced the former Sacramento-Meadowview Road O3

monitoring site. 

This site is the upwind O3 and ozone precursor monitoring site for our network. It 

is also a PAMS Type I site. It measures O3, NO2, total NMHC, speciated VOC 

(episodic only), PM2.5 BAM, WD, WS, TMP, RH, SRD, UV radiation, precipitation, 

and atmospheric pressure

Adjacent to the air monitoring site is the Franklin Field Radar Wind Profiler 

(RWP) for measurement of upper level winds and temperature. This RWP is 

operated year-round. Collection of upper air meteorology data is a requirement 

for the PAMS program.

Site Name Elk Grove-Bruceville

AQS Site No. 06-067-0011

Geographic Coordinates 38.302630° -121.420850° (WGS84)

Location Rural area located 4 miles south of Elk Grove, 

CA.

Address 12490 Bruceville Rd, Elk Grove, CA 95758

County Sacramento

Distance from roadway 76 m

Average Daily Traffic 1,407 Vehicles/Day (SACDOT, 2011)

Ground Cover Vegetated

Representative Area (MSA) Sacramento--Arden-Arcade--Roseville, CA
24

Gaseous Monitors:

Site Elk Grove-Bruceville

Start Date 7/1/92 7/1/92 7/1/96 7/1/96

Collecting Agency SMAQMD SMAQMD SMAQMD SMAQMD

Analytical Lab N/A N/A N/A VCAPCD

Reporting Agency CARB CARB CARB CARB

Pollutant Ozone Nitrogen Dioxide Total NMHC Speciated VOC

Parameter code 44201 42602 43102 43102

POC 1 1 1 2

Instrument manufacturer and model TAPI 400 TEI 42I TEI 55C Xontech 910A/912

Sampling method UV Absorption Chemiluminescence GC Summa Canister

Sampling method code 087 074 164 123

FRM/FEM/ARM/Other FEM FRM Other Other

Suitable for comparison against annual PM2.5 N/A

Monitoring objective Public info

Monitor type Unofficial PAMS (Type 1)

Site type Upwind/Background

Spatial scale Neighborhood

Current sampling frequency Continuous Continuous Continuous 1:3

Sampling season Year Round Year Round Year Round July-September

Distance from supporting structure (m) 1.3 1.3 1.3 2

Distance from obstructions on roof (m) N/A N/A N/A N/A

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

Distance from trees (m) 20 20 20 20

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

Distance between collocated monitors N/A N/A N/A N/A

Unrestricted airflow >= 270 deg arc Yes Yes Yes Yes

Probe height (m, agl) 4.4 4.4 4.4 5.1

Probe material FEP Teflon FEP Teflon FEP Teflon Stainless Steel

Residence time 11 13 16 2

Any changes in the next 18 months? No No No Yes

Frequency of one-point QC check Every other day Every other day Every other day Every other day

Last Annual Performance Evaluation 10/17/11 10/17/11 1/25/12 N/A
25

Particulate Matter Monitor:

Site Elk Grove-Bruceville

Start Date 12/1/00

Collecting Agency SMAQMD

Analytical Lab N/A

Reporting Agency CARB

Pollutant PM2.5

Parameter code 88501

POC 3

Instrument manufacturer and model Met One 1020 BAM

Sampling method Low Volume/VSCC

Sampling method code 731

FRM/FEM/ARM/Other Pre-FEM

Suitable for comparison against annual PM2.5 No

Monitoring objective Public info

Monitor type SPM

Site type General/Background

Spatial scale Neighborhood

Current sampling frequency Continuous

Sampling season Year Round

Distance from supporting structure (m) 15

Distance from obstructions on roof (m) N/A

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

Distance from trees (m) 20

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

Distance between collocated monitors N/A

Unrestricted airflow >= 270 deg arc Yes

Probe height (m, agl) 4.3

Probe material N/A

Residence time N/A

Any changes in the next 18 months? No

Frequency of flow rate verification for PM 

monitors Bi-monthly

Last two semi-annual flow rate audits for PM 

monitors

4/14/11

10/17/11
26

Meteorology:

Site Elk Grove-Bruceville

Start Date 8/1/96 8/1/96 7/1/97 8/1/97

Collecting Agency SMAQMD

Analytical Lab N/A

Reporting Agency CARB

Pollutant Ambient Temperature Relative Humidity Barometric Pressure Precipitation

Parameter code 62101 62201 64101 65102

POC 1 1 1 1

Instrument manufacturer and model Climatronics 100093 Climatronics 101669 Climatronics 101448 Climatronics 100508

Sampling method Thermistor Hygroscopic Plastic Film Barometric sensor Tipping Bucket

Sampling method code 042 012 011 011

FRM/FEM/ARM/Other Other Other Other Other

Suitable for comparison against annual PM2.5 N/A

Monitoring objective Public info

Monitor type Unofficial PAMS (Type 1)

Site type N/A

Spatial scale N/A

Current sampling frequency Continuous

Sampling season Year Round

Distance from supporting structure (m) N/A N/A N/A N/A

Distance from obstructions on roof (m) N/A N/A N/A N/A

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

Distance from trees (m) 20 20 20 20

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

Distance between collocated monitors N/A N/A N/A N/A

Unrestricted airflow >= 270 deg arc Yes Yes Yes Yes

Probe height (m, agl) 10 10 2 3

Probe material N/A N/A N/A N/A

Residence time N/A N/A N/A N/A

Any changes in the next 18 months? No No No No

Frequency of one-point QC check N/A N/A N/A N/A

Last Annual Performance Evaluation 10/17/11 N/A 10/17/11 N/A
27

Site Elk Grove-Bruceville

Start Date 8/1/96 8/1/97 8/1/96 8/1/96 6/1/96

Collecting Agency SMAQMD SMAQMD

Analytical Lab N/A N/A

Reporting Agency CARB Not reported to AQS

Pollutant Solar Radiation UV Radiation Wind Direction Wind Speed

Upper Level Wind 

Direction/Speed 

and Virtual Temp

Parameter code 63301 63302 61104 61103 N/A

POC 1 1 1 1 N/A

Instrument manufacturer and model

Climatronics 

100848

Climatronics 

100TUVR

Climatronics F460 

WD Sensor

Climatronics F-460 

WS Sensor

Radian LAP-3000 

with RASS option

Sampling method Pyranometer Pyranometer Wind Vane Anemometer

915 MHz Radar Wind 

Profiler, with RASS

Sampling method code 011 011 020 020 N/A

FRM/FEM/ARM/Other Other Other Other Other Other

Suitable for comparison against annual PM2.5 N/A N/A

Monitoring objective Public info Public info

Monitor type Unofficial PAMS (Type 1) PAMS (Type 1)

Site type N/A N/A

Spatial scale N/A N/A

Current sampling frequency Continuous Continuous

Sampling season Year Round Year Round

Distance from supporting structure (m) N/A N/A N/A N/A N/A

Distance from obstructions on roof (m) N/A N/A N/A N/A N/A

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

Distance from trees (m) 20 20 20 20 N/A

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

Distance between collocated monitors N/A N/A N/A N/A N/A

Unrestricted airflow >= 270 deg arc Yes Yes Yes Yes Yes

Probe height (m, agl) 10 10 10 10 N/A

Probe material N/A N/A N/A N/A N/A

Residence time N/A N/A N/A N/A N/A

Any changes in the next 18 months? No No No No No

Frequency of one-point QC check N/A N/A N/A N/A N/A

Last Annual Performance Evaluation N/A N/A 10/17/11 10/17/11 4/27/11
28

B.3 SACRAMENTO-DEL PASO MANOR

This site has been in existence since 1979. This air monitoring site is the largest 

air monitoring site in the Sacramento Valley air basin. This site is one of the 

largest air monitoring sites in Northern California, in terms of number of 

parameters measured.

It measures O3, CO (trace level), NO2, NOy, SO2 (trace level), NMHC, speciated 

VOC (C2-C12), Carbonyl, PM10 (SSI- main and collocated), PM10 TEOM, PM10 

coarse, Pb-PM10, PM2.5 FRM (main and collocated), PM2.5 BAM, Speciated PM2.5

(SASS), Black Carbon (Aethalometer), Scattering Coefficient (Nephelometer), 

WD-resultant, WS-resultant, ambient temperature, relative humidity, and total 

solar radiation. 

This site is a PAMS Type II primary site and a PM2.5 Chemical Speciation 

Network (CSN) site. This site is the current PM2.5 design value site for this MSA.

In October 2009, EPA-Region IX approved this monitoring site as an NCore site. 

This is one of six NCore sites operating in California. To accommodate the 

NCore monitoring instrumentation, the District expanded the size of the existing 

roof deck, added a 10 meter NOY converter tower, and upgraded the electrical 

capacity in Spring 2010.

Site Name Sacramento-Del Paso Manor

AQS Site No. 06-067-0006

Geographic Coordinates 38.613804°, -121.368007° (WGS84)

Location Neighborhood park located 7 miles eastnortheast of downtown Sacramento.

Address 2701 Avalon Drive, Sacramento, CA 95821

County Sacramento

Distance from roadway 30 m

Average Daily Traffic 1,000 Vehicles/Day (estimated)

Ground Cover Vegetated

Representative Area (MSA) Sacramento--Arden-Arcade--Roseville, CA
29

Gaseous Monitors:

Site Sacramento-Del Paso Manor

Start Date 7/1/11 12/1/79 12/1/79 7/1/11

Collecting Agency SMAQMD

Analytical Lab N/A

Reporting Agency CARB

Pollutant Ozone

Carbon Monoxide

(trace level) Nitrogen Dioxide NOY

Parameter code 44201 42101 42602 42600

POC 1 1 1 1

Instrument manufacturer and model TAPI 400 TAPI 300EU TEI 42C TEI 42I-Y

Sampling method UV Absorption NDIR Chemiluminescence Chemiluminescence

Sampling method code 087 593 074 574

FRM/FEM/ARM/Other FEM FRM FRM Other

Suitable for comparison against annual PM2.5 N/A N/A

Monitoring objective Public info Public info

Monitor type SLAMS, NCORE, PAMS (Type 2) NCORE

Site type Population Exposure Population Exposure

Spatial scale Neighborhood Neighborhood

Current sampling frequency Continuous Continuous

Sampling season Year Round Year Round

Distance from supporting structure (m) 2 2 2

Distance from obstructions on roof (m) N/A N/A N/A N/A

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

Distance from trees (m) 22 22 22 22

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

Distance between collocated monitors N/A N/A N/A N/A

Unrestricted airflow >= 270 deg arc Yes Yes Yes Yes

Probe height (m, agl) 5.3 5.3 5.3 10

Probe material FEP Teflon FEP Teflon FEP Teflon FEP Teflon

Residence time 7 12 8 4

Any changes in the next 18 months? No No No No

Frequency of one-point QC check Every fourth day Every fourth day Every fourth day Every fourth day

Last Annual Performance Evaluation 10/7/11 N/A 10/7/11 NA
30

Site Sacramento-Del Paso Manor

Start Date 7/1/11 8/1/94 8/1/94 8/1/96

Collecting Agency SMAQMD SMAQMD SMAQMD SMAQMD

Analytical Lab N/A N/A VCAPCD ERG, Inc.

Reporting Agency CARB CARB CARB CARB

Pollutant

Sulfur Dioxide

(trace level) Total NMHC Speciated VOC Carbonyl

Parameter code 42401 43102 43102 various

POC 2 2 1 1

Instrument manufacturer and model TAPI 100EU TEI 55C Xontech 910A/912 Xontech 925

Sampling method UV Fluorescence GC-FID Summa Canister

DNPH-Silica Gel 

Cartridge

Sampling method code 060 164 123 202

FRM/FEM/ARM/Other FEM Other Other Other

Suitable for comparison against annual PM2.5 N/A N/A N/A N/A

Monitoring objective Public info Research Research Research

Monitor type SLAMS, NCORE SLAMS, PAMS (Type 2) SLAMS, PAMS (Type 2) PAMS (Type 2)

Site type Highest concentration Highest concentration Highest concentration Highest concentration

Spatial scale Neighborhood Neighborhood Neighborhood Neighborhood

Current sampling frequency Continuous Continuous 1:3 1:3

Sampling season Year Round Year Round July-September July-September

Distance from supporting structure (m) 2 2 2.1 2.1

Distance from obstructions on roof (m) N/A N/A N/A N/A

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

Distance from trees (m) 22 22 22 22

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

Distance between collocated monitors N/A N/A N/A N/A

Unrestricted airflow >= 270 deg arc Yes Yes Yes Yes

Probe height (m, agl) 5.3 5.3 5.4 5.4

Probe material FEP Teflon FEP Teflon Stainless Steel Stainless Steel

Residence time 16 12 3 3

Any changes in the next 18 months? No No No No

Frequency of one-point QC check Every fourth day Every fourth day N/A N/A

Last Annual Performance Evaluation NA 2/2/12 N/A N/A
31

Particulate Matter Monitors:

Site Sacramento-Del Paso Manor

Start Date 12/1/01 12/1/01 1/1/86 1/1/86

Collecting Agency SMAQMD SMAQMD

Analytical Lab N/A SMAQMD

Reporting Agency CARB CARB

Pollutant Black Carbon Scattering Coefficient PM10 PM10 (collocated)

Parameter code 84313 11203 81102 81102

POC 1 1 1 2

Instrument manufacturer and model Anderson RTAA 800 Radiance Research M903 Sierra-Anderson 1200 Sierra-Anderson 1200

Sampling method Light Absorption Light Scattering

Hi-Volume/

Size Selective Inlet

Hi-Volume/

Size Selective Inlet

Sampling method code 862 011 063 063

FRM/FEM/ARM/Other Other Other FRM FRM

Suitable for comparison against annual PM2.5 N/A No N/A N/A

Monitoring objective Research Research Public info Public info

Monitor type SPM SPM SLAMS SLAMS

Site type General/Background General/Background Population Exposure Population Exposure

Spatial scale Neighborhood Neighborhood Neighborhood Neighborhood

Current sampling frequency Continuous Continuous 1:6 1:6

Sampling season Year Round Year Round Year Round Year Round

Distance from supporting structure (m) 1.8 1 2 2

Distance from obstructions on roof (m) N/A N/A N/A N/A

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

Distance from trees (m) 22 22 22 22

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

Distance between collocated monitors N/A N/A 2 2

Unrestricted airflow >= 270 deg arc Yes Yes Yes Yes

Probe height (m, agl) 5.1 4.5 5 5

Probe material Aluminum PVC Plastic N/A N/A

Residence time 1 N/A N/A N/A

Any changes in the next 18 months? No Yes No No

Frequency of flow rate verification for PM 

monitors N/A N/A Monthly Monthly

Last two semi-annual flow rate audits for PM 

monitors N/A N/A

3/8/11

10/7/11

3/8/11

10/7/11
32

Site Sacramento-Del Paso Manor

Start Date 1/1/99 2/1/99 5/1/00 2/1/00

Collecting Agency SMAQMD SMAQMD SMAQMD SMAQMD

Analytical Lab CARB CARB N/A RTI

Reporting Agency CARB CARB CARB RTI

Pollutant PM2.5 PM2.5 (collocated) PM2.5 Speciated PM2.5

Parameter code 88101 88101 88502 68103

POC 1 2 3 5

Instrument manufacturer and model R & P 2025 R & P 2025 Met One 1020 BAM Met One SASS

Sampling method Low volume/VSCC Low volume/VSCC Low Volume/VSCC SASS

Sampling method code 118 118 731 810, 812

FRM/FEM/ARM/Other FRM FRM Pre-FEM Other

Suitable for comparison against annual PM2.5 Yes Yes No No

Monitoring objective NAAQS Comparison NAAQS Comparison Public info Public info

Monitor type SLAMS, NCORE SLAMS, NCORE SPM SLAMS, CSN, NCORE

Site type Highest concentration Highest concentration Highest concentration Highest concentration

Spatial scale Neighborhood Neighborhood Neighborhood Neighborhood

Current sampling frequency 1:3 1:12 Continuous 1:3

Sampling season Year Round Year Round Year Round Year Round

Distance from supporting structure (m) 2 2 2 1.9

Distance from obstructions on roof (m) N/A N/A N/A N/A

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

Distance from trees (m) 22 22 22 22

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

Distance between collocated monitors 2 2 N/A N/A

Unrestricted airflow >= 270 deg arc Yes Yes Yes Yes

Probe height (m, agl) 5 5 5.3 5.2

Probe material N/A N/A N/A N/A

Residence time N/A N/A N/A N/A

Any changes in the next 18 months? No No Yes No

Frequency of flow rate verification for PM 

monitors Bi-Monthly Bi-Monthly Bi-monthly Monthly

Last two semi-annual flow rate audits for PM 

monitors

3/8/11

10/7/11

3/8/11

10/7/11

3/8/11

10/7/11

3/8/11

10/7/11
33

Site Sacramento-Del Paso Manor

Start Date 4/1/09 4/1/12 4/1/12

Collecting Agency SMAQMD SMAQMD SMAQMD

Analytical Lab RTI CARB RTI

Reporting Agency RTI CARB CARB

Pollutant

Organic and elemental 

carbon PM10 (coarse) Pb

Parameter code (various parameter code) 85101 85129

POC 5 5 5

Instrument manufacturer and model URG 3000N R & P 2025 R & P 2025

Sampling method

Quartz filter and

Cyclone Inlet Low volume/VSCC Low volume/VSCC

Sampling method code 842, 826 127 811

FRM/FEM/ARM/Other Other FRM FRM

Suitable for comparison against annual PM2.5 N/A N/A N/A

Monitoring objective Public info Public info Public info

Monitor type SLAMS, CSN, NCORE NCORE NCORE

Site type Highest concentration Population Exposure Population Exposure

Spatial scale Neighborhood Neighborhood Neighborhood

Current sampling frequency 1:3 1:6 1:6

Sampling season Year Round Year Round Year Round

Distance from supporting structure (m) 1.9 2 2

Distance from obstructions on roof (m) N/A N/A N/A

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

Distance from trees (m) 22 22 22

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

Distance between collocated monitors N/A 2 N/A

Unrestricted airflow >= 270 deg arc Yes Yes Yes

Probe height (m, agl) 5.2 5 5

Probe material N/A N/A N/A

Residence time N/A N/A N/A

Any changes in the next 18 months? No No No

Frequency of flow rate verification for PM 

monitors Monthly Bi-monthly Bi-monthly

Last two semi-annual flow rate audits for PM 

monitors N/A N/A N/A
34

Meteorology:

Site Sacramento-Del Paso Manor

Start Date 8/1/94 8/1/94 9/1/94 8/1/94 8/1/94

Collecting Agency SMAQMD

Analytical Lab N/A

Reporting Agency CARB

Pollutant

Ambient 

Temperature Relative Humidity Solar Radiation Wind Direction Wind Speed

Parameter code 62101 62201 63301 61104 61103

POC 1 1 1 1 1

Instrument manufacturer and model

Climatronics 

100093 Climatronic 101669

Climatronics 

100848

Climatronics F460 

WD sensor

Climatronics F-460 

WS sensor

Sampling method Thermistor

Hygroscopic plastic 

film Pyranometer Wind Vane Anemometer

Sampling method code 042 012 011 020 020

FRM/FEM/ARM/Other Other Other Other Other Other

Suitable for comparison against annual PM2.5 N/A

Monitoring objective Public info

Monitor type SLAMS, NCORE, PAMS (Type 2)

Site type N/A

Spatial scale N/A

Current sampling frequency Continuous

Sampling season Year Round

Distance from supporting structure (m) N/A N/A N/A N/A N/A

Distance from obstructions on roof (m) N/A N/A N/A N/A N/A

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

Distance from trees (m) 22 22 22 22 22

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

Distance between collocated monitors N/A N/A N/A N/A N/A

Unrestricted airflow >= 270 deg arc Yes Yes Yes Yes Yes

Probe height (m, agl) 10 10 10 10 10

Probe material N/A N/A N/A N/A N/A

Residence time N/A N/A N/A N/A N/A

Any changes in the next 18 months? No No No No No

Frequency of one-point QC check N/A N/A N/A N/A N/A

Last Annual Performance Evaluation 10/7/11 N/A N/A 10/7/11 10/7/11
35

B.4 SACRAMENTO-EL CAMINO/WATT

Sacramento-El Camino/Watt has been in existence since 1981. This site is a 

micro-scale CO monitoring station.

In September 2011, EPA approved the District’s site termination request due to a 

street/sidewalk improvement project in 2012 that requires termination or 

relocation of this air monitoring station. The site termination is contingent on the 

construction project obtaining funding and being approved to proceed.

Site Name Sacramento- El Camino/Watt

AQS Site No. 06-067-0007

Geographic Coordinates 38.61°, -121.38° (NAD27)

Location Shopping Center located 6.5 miles eastnortheast of downtown Sacramento.

Address 3535 El Camino Avenue, Sacramento, CA 

95825

County Sacramento

Distance from roadway 2 m

Average Daily Traffic 18,891 Vehicles/Day (SACDOT, 2010)

Ground Cover Paved

Representative Area (MSA) Sacramento--Arden-Arcade--Roseville, CA
36

Gaseous Monitors:

Site Sacramento-El Camino Watt

Start Date 11/1/01

Collecting Agency SMAQMD

Analytical Lab N/A

Reporting Agency CARB

Pollutant Carbon Monoxide

Parameter code 42101

POC 1

Instrument manufacturer and model TEI 48C

Sampling method NDIR

Sampling method code 054

FRM/FEM/ARM/Other FRM

Suitable for comparison against annual PM2.5 N/A

Monitoring objective Public info

Monitor type SLAMS

Site type Highest concentration

Spatial scale Micro-scale

Current sampling frequency Continuous

Sampling season Year Round

Distance from supporting structure (m) 1.1

Distance from obstructions on roof (m) N/A

Distance from obstructions not on roof (m) 4 m

Distance from trees (m) N/A

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

Distance between collocated monitors N/A

Unrestricted airflow >= 270 deg arc Yes

Probe height (m, agl) 3

Probe material FEP Teflon

Residence time 16

Any changes in the next 18 months? Yes

Frequency of one-point QC check Every Other Day

Last Annual Performance Evaluation 10/18/11
37

B.5 FOLSOM-NATOMA STREET

This site is in operation since 1996. This site replaced the former FolsomLiedesdoff Street site. The Folsom-Natoma site is the maximum summertime O3

monitoring site within Sacramento County, for days with the prevailing afternoon 

southwesterly winds.

This site measures: O3, NO2, PM2.5 BAM, Total NMHC, Speciated VOC, WD, 

WS, Temp, RH, and SRD. 

This site is a PAMS Type III site. 

Site Name Folsom-Natoma Street

AQS Site No. 06-067-0012

Geographic Coordinates 38.683304°, -121.164457° (WGS84)

Location Folsom City Hall (parking lot), located 20 

miles east-northeast of downtown 

Sacramento.

Address 50 Natoma Street, Folsom, CA 95630

County Sacramento

Distance from roadway 183 m

Average Daily Traffic 20,891 Vehicles/Day @ Natoma St. & Riley 

St. (City of Folsom, 2009)

Ground Cover Vegetated

Representative Area (MSA) Sacramento--Arden-Arcade--Roseville, CA
38

Gaseous Monitors:

Site Folsom-Natoma St.

Start Date 7/1/96 7/1/96 7/1/11 7/1/96 7/1/96

Collecting Agency SMAQMD

Analytical Lab N/A

Reporting Agency CARB

Pollutant Ozone Nitrogen Dioxide NOY Total NMHC Speciated VOC

Parameter code 44201 42602 42600 43102 43102

POC 1 1 1 1 2

Instrument manufacturer and model TAPI 400 TEI 42C TEI 42I-Y TEI 55C Xontech 910A/912

Sampling method UV absorption Chemiluminescence Chemiluminescence GC Summa Canister

Sampling method code 087 074 574 164 123

FRM/FEM/ARM/Other FEM FRM Other Other Other

Suitable for comparison against annual PM2.5 N/A N/A N/A N/A N/A

Monitoring objective

NAAQS 

Comparison Public info Public info Public info Research

Monitor type

SLAMS, PAMS 

(Type 3)

SLAMS, PAMS 

(Type 3)

SLAMS, PAMS 

(Type 3)

SLAMS, PAMS 

(Type 3)

SLAMS, PAMS 

(Type 3)

Site type

Max O3

concentration

Highest 

concentration General/Background

Highest 

concentration

Highest 

concentration

Spatial scale Neighborhood Neighborhood Neighborhood Neighborhood Neighborhood

Current sampling frequency Continuous Continuous Continuous Continuous 1:3

Sampling season Year Round Year Round Year Round Year Round July-September

Distance from supporting structure (m) 1.1 1.8 N/A 1.8 1.8

Distance from obstructions on roof (m) N/A N/A N/A N/A N/A

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

Distance from trees (m) N/A N/A N/A N/A N/A

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

Distance between collocated monitors N/A N/A N/A N/A N/A

Unrestricted airflow >= 270 deg arc Yes Yes Yes Yes Yes

Probe height (m, agl) 5.3 5.3 10 5.3 5.3

Probe material FEP Teflon FEP Teflon FEP Teflon FEP Teflon Stainless Steel

Residence time 11 11 9 12 3

Any changes in the next 18 months? No No No No No

Frequency of one-point QC check Every other day Every other day Every other day Every other day N/A

Last Annual Performance Evaluation 10/12/11 10/12/11 N/A 1/25/12 N/A
39

Particulate Matter Monitor:

Site Folsom-Natoma St.

Start Date 5/1/02

Collecting Agency SMAQMD

Analytical Lab N/A

Reporting Agency CARB

Pollutant PM2.5

Parameter code 88501

POC 3

Instrument manufacturer and model Met One 1020 BAM

Sampling method Low Volume/VSCC

Sampling method code 731

FRM/FEM/ARM/Other Pre-FEM

Suitable for comparison against annual PM2.5 No

Monitoring objective Public info

Monitor type SPM

Site type General/Background

Spatial scale Neighborhood

Current sampling frequency Continuous

Sampling season Year Round

Distance from supporting structure (m) 1.5

Distance from obstructions on roof (m) N/A

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

Distance from trees (m) N/A

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

Distance between collocated monitors N/A

Unrestricted airflow >= 270 deg arc Yes

Probe height (m, agl) 4.3

Probe material N/A

Residence time N/A

Any changes in the next 18 months? No

Frequency of flow rate verification for PM 

monitors Bi-monthly

Last two semi-annual flow rate audits for PM 

monitors

4/14/11

10/12/11
40

Meteorology:

Site Folsom-Natoma St.

Start Date 7/1/96 7/1/96 7/1/96 7/1/96 7/1/96

Collecting Agency SMAQMD

Analytical Lab N/A

Reporting Agency CARB

Pollutant

Ambient 

Temperature Relative Humidity Solar Radiation Wind Direction Wind Speed

Parameter code 62101 62201 63301 61104 61103

POC 1 1 1 1 1

Instrument manufacturer and model

Climatronics 

100093

Climatronics 

101669

Climatronics 

100848

Climatronics F-460 

WD sensor

Climatronics F-460 

WS sensor

Sampling method Thermistor

Hygroscopic Plastic 

film Pyranometer Wind Vane Anemometer

Sampling method code 042 012 011 020 020

FRM/FEM/ARM/Other Other Other Other Other Other

Suitable for comparison against annual PM2.5 N/A

Monitoring objective Public info

Monitor type SLAMS, PAMS (Type 3)

Site type N/A

Spatial scale N/A

Current sampling frequency Continuous

Sampling season Year Round

Distance from supporting structure (m) N/A N/A N/A N/A N/A

Distance from obstructions on roof (m) N/A N/A N/A N/A N/A

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

Distance from trees (m) N/A N/A N/A N/A N/A

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

Distance between collocated monitors N/A N/A N/A N/A N/A

Unrestricted airflow >= 270 deg arc Yes Yes Yes Yes Yes

Probe height (m, agl) 10 10 10 10 10

Probe material N/A N/A N/A N/A N/A

Residence time N/A N/A N/A N/A N/A

Any changes in the next 18 months? No No No No No

Frequency of one-point QC check N/A N/A N/A N/A N/A

Last Annual Performance Evaluation 10/12/11 N/A N/A 10/12/11 10/12/11
41

B.6 SACRAMENTO – GOLDENLAND COURT

This site replaced the former Airport Rd. monitoring site. This PAMS Type II 

(secondary) site began monitoring in October 2008.

This site measures O3, CO, NO2, Total NMHC, PM10, WD, WS, Temp, RH, and 

SRD.

Site Name Goldenland Court

AQS Site No. 06-067-0014

Geographic Coordinates 38.650716°, -121.506650° (WGS84)

Location Site located 5 miles north of downtown 

Sacramento, in a residential/commercial 

area.

Address 68 Goldenland Court, Sacramento, CA 

95834

County Sacramento

Distance from roadway 120 m

Average Daily Traffic 750 Vehicles/Day (Estimated)

Ground Cover Vegetated

Representative Area (MSA) Sacramento--Arden-Arcade--Roseville, CA
42

Gaseous Monitors:

Site Sacramento-Goldenland Ct.

Start Date 10/1/08 10/1/08 10/1/08 10/1/08

Collecting Agency SMAQMD

Analytical Lab N/A

Reporting Agency CARB

Pollutant Ozone Carbon Monoxide/42101 Nitrogen Dioxide Total NMHC

Parameter code 44201 42101 42602 43102

POC 1 1 1 1

Instrument manufacturer and model TAPI 400 TEI 48 CO Analyzer TEI 42C TEI 55C

Sampling method UV Absorption NDIR Chemiluminesence GC

Sampling method code 087 054 074 164

FRM/FEM/ARM/Other FEM FRM FRM Other

Suitable for comparison against annual PM2.5 N/A N/A N/A N/A

Monitoring objective Public info Public info Public info Public info

Monitor type

SLAMS, Unofficial PAMS 

(Type 2 Secondary) SLAMS

SLAMS, Unofficial PAMS 

(Type 2 Secondary)

SLAMS, Unofficial PAMS 

(Type 2 Secondary)

Site type Population Exposure Population Exposure Population Exposure Population Exposure

Spatial scale Neighborhood Neighborhood Neighborhood Neighborhood

Current sampling frequency Continuous Continuous Continuous Continuous

Sampling season Year Round Year Round Year Round Year Round

Distance from supporting structure (m) 1.9 1.9 1.9 1.9

Distance from obstructions on roof (m) N/A N/A N/A N/A

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

Distance from trees (m) 20 20 20 20

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

Distance between collocated monitors N/A N/A N/A N/A

Unrestricted airflow >= 270 deg arc Yes Yes Yes Yes

Probe height (m, agl) 5.3 5.3 5.3 5.3

Probe material FEP Teflon FEP Teflon FEP Teflon FEP Teflon

Residence time 17 15 17 17

Any changes in the next 18 months? Yes Yes Yes Yes

Frequency of one-point QC check Every other day Every other day Every other day Every other day

Last Annual Performance Evaluation 10/3/11 10/3/11 10/3/11 1/22/12
43

Particulate Matter Monitors:

Site Sacramento-Goldenland Ct.

Start Date 10/1/08 6/1/10

Collecting Agency SMAQMD SMAQMD

Analytical Lab SMAQMD N/A

Reporting Agency CARB CARB

Pollutant PM10 PM10

Parameter code 81102 85101

POC 1 3

Instrument manufacturer and model Sierra Anderson 1200 R & P 1400A

Sampling method

Hi-Volume/Size Selective 

Inlet Low Volume

Sampling method code 063 079

FRM/FEM/ARM/Other FRM FEM

Suitable for comparison against annual PM2.5 N/A N/A

Monitoring objective Public info Public info

Monitor type SLAMS SLAMS

Site type Population Exposure Population Exposure

Spatial scale Neighborhood Neighborhood

Current sampling frequency 1:6 Continuous

Sampling season Year Round Year Round

Distance from supporting structure (m) 2 1.8

Distance from obstructions on roof (m) N/A N/A

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

Distance from trees (m) 20 20

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

Distance between collocated monitors N/A N/A

Unrestricted airflow >= 270 deg arc Yes Yes

Probe height (m, agl) 5.4 5

Probe material N/A N/A

Residence time N/A N/A

Any changes in the next 18 months? Yes Yes

Frequency of flow rate verification for PM 

monitors Monthly Bi-monthly

Last two semi-annual flow rate audits for PM 

monitors

3/8/11

10/3/11

3/8/11

10/3/11
44

Meteorology:

Site Sacramento-Goldenland Ct.

Start Date 10/1/08 10/1/08 10/1/08 10/1/08 10/1/08

Collecting Agency SMAQMD

Analytical Lab N/A

Reporting Agency CARB

Pollutant

Ambient 

Temperature Relative Humidity Solar Radiation Wind Direction Wind Speed

Parameter code 62101 62201 63301 61104 61103

POC 1 1 1 1 1

Instrument manufacturer and model

Climatronics 

100093

Climatronics 

101669

Climatronics 

100848

Climatronics F-460 

WD sensor

Climatronics F-460 

WS sensor

Sampling method Thermistor

Hygroscopic Plastic 

Film Pyranometer Wind Vane Anemometer

Sampling method code 042 012 011 020 020

FRM/FEM/ARM/Other Other Other Other Other Other

Suitable for comparison against annual PM2.5 N/A

Monitoring objective Public info

Monitor type SLAMS, Unofficial PAMS (Type 2 Secondary)

Site type N/A

Spatial scale N/A

Current sampling frequency Continuous

Sampling season Year Round

Distance from supporting structure (m) N/A N/A N/A N/A N/A

Distance from obstructions on roof (m) N/A N/A N/A N/A N/A

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

Distance from trees (m) > 20 m > 20 m > 20 m > 20 m > 20 m

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

Distance between collocated monitors N/A N/A N/A N/A N/A

Unrestricted airflow >= 270 deg arc Yes Yes Yes Yes Yes

Probe height (m, agl) 10 10 10 10 10

Probe material N/A N/A N/A N/A N/A

Residence time N/A N/A N/A N/A N/A

Any changes in the next 18 months? Yes Yes Yes Yes Yes

Frequency of one-point QC check N/A N/A N/A N/A N/A

Last Annual Performance Evaluation 10/3/11 N/A N/A 10/3/11 10/3/11
45

B.7 NORTH HIGHLANDS-BLACKFOOT

North Highlands- Blackfoot has been in existence since 1979. It is a Special 

Purpose Monitoring site for O3, CO, and NO2. This site is a SLAMS site for PM10 SSI. SO2 was terminated in late 2010.

This entire site was designated as SPM upon its establishment. The original site 

objective was to collect data in support of a proposed power plant project 

(Prevention of Significant Deterioration) at McClellan Air Force Base, which was 

located 3 miles southwest of the site. The purposed power plant project was 

canceled during the early 1980’s. The Air Force Base was closed in 2001.

During an annual review of network design in the mid-1990s, the District needed 

additional NAMS sites for SO2 and PM10 to meet minimum monitoring 

requirements. Thus, the designation of the SO2 and PM10 monitors at North 

Highlands was changed from SPM to NAMS, which is now categorized as 

SLAMS2.

Site Name North Highlands-Blackfoot

AQS Site No. 06-067-0002

Geographic Coordinates 38.71209°, -121.38109° (WGS84)

Location Residential area located 11 miles northnortheast of downtown Sacramento.

Address 7823 Blackfoot Way, Antelope, CA 95843

County Sacramento 

Distance from roadway 100 m

Average Daily Traffic 1,000 Vehicles/Day (Estimated)

Ground Cover Paved (to north), vegetated (to south)

Representative Area (MSA) Sacramento--Arden-Arcade--Roseville, CA

 

2 According to the National Monitoring Program Fact Sheets, found in Appendix A to 

Quality Assurance Handbook for Air Pollution Measurement Systems, SLAMS network 

includes stations that are formerly classified as NAMS.
46

Gaseous Monitors:

Site North Highlands

Start Date 12/1/79 12/1/79 12/1/79

Collecting Agency SMAQMD

Analytical Lab N/A

Reporting Agency CARB

Pollutant Ozone Carbon Monoxide Nitrogen Dioxide

Parameter code 44201 42101 42602

POC 1 1 1

Instrument manufacturer and model TAPI 400 TEI 48C TEI 42I

Sampling method UV Absorption NDIR Chemiluminescence

Sampling method code 019 054 074

FRM/FEM/ARM/Other FEM FRM FRM

Suitable for comparison against annual PM2.5 N/A

Monitoring objective Research

Monitor type SPM

Site type Population Exposure

Spatial scale Neighborhood

Current sampling frequency Continuous

Sampling season Year Round

Distance from supporting structure (m) 2 2 2

Distance from obstructions on roof (m) N/A N/A N/A

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

Distance from trees (m) 10 10 10

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

Distance between collocated monitors N/A N/A N/A

Unrestricted airflow >= 270 deg arc Yes Yes Yes

Probe height (m, agl) 5 5 5

Probe material FEP Teflon FEP Teflon FEP Teflon

Residence time 16 19 19

Any changes in the next 18 months? Yes Yes No

Frequency of one-point QC check Every Other Day Every Other Day Every Other Day

Last Annual Performance Evaluation 10/5/11 10/5/11 10/5/11
47

Particulate Matter Monitor:

Site North Highlands

Start Date 1/1/89

Collecting Agency SMAQMD

Analytical Lab SMAQMD

Reporting Agency CARB

Pollutant PM10

Parameter code 81102

POC 1

Instrument manufacturer and model Sierra Anderson 1200

Sampling method Hi-Volume/Size Selective Inlet

Sampling method code 063

FRM/FEM/ARM/Other FRM

Suitable for comparison against annual PM2.5 N/A

Monitoring objective Public info

Monitor type SLAMS

Site type Population Exposure

Spatial scale Neighborhood

Current sampling frequency 1:6

Sampling season Year Round

Distance from supporting structure (m) 2

Distance from obstructions on roof (m) N/A

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

Distance from trees (m) 10

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

Distance between collocated monitors N/A

Unrestricted airflow >= 270 deg arc Yes

Probe height (m, agl) 5

Probe material N/A

Residence time N/A

Any changes in the next 18 months? Yes

Frequency of flow rate verification for PM 

monitors Monthly

Last two semi-annual flow rate audits for PM 

monitors

3/8/11

10/11/11
48

B.8 SLOUGHHOUSE

Located in a rural area 16.5 miles southeast of Downtown Sacramento, this site 

measures O3, wind direction, wind speed, and PM2.5.

Sloughhouse was established in 1997 as a seasonal (April-October) O3 special 

purpose monitoring site to measure elevated afternoon O3 concentrations, under 

northwesterly winds, in support of the District's summer Spare the Air (O3

episodic control measure) program. It was sited to cover ―data gaps‖ in the O3

monitoring network, which is used for forecasting summer AQI levels.

A tree 10 m southeast of the O3 inlet was removed in May 2011. Since the site 

now complies with Appendix E (Probe and Monitoring Path Siting Criteria), the O3

monitor was re-classified from SPM to SLAMS.

Since November 2008, seasonal (November-February) monitoring for PM2.5 is 

conducted at this site. A special purpose PM2.5 E-BAM monitor collects data in 

support of the South Sacramento County Winter PM2.5 study. This study has 

been extended, due to the extremely low data capture rates during the 2008 and 

2009 winter seasons

Site Name Sloughhouse

AQS Site No. 06-067-5003

Geographic Coordinates 38.494475°, -121.211131° (WGS84)

Location Fire Station in rural area located 16.5 miles 

east-southeast of downtown Sacramento.

Address 7520 Sloughhouse Road, Sloughhouse, CA 

95683

County Sacramento

Distance from roadway 27 m

Average Daily Traffic 200 Vehicles/Day (Estimated)

Ground Cover Vegetated

Representative Area (MSA) Sacramento--Arden-Arcade--Roseville, CA
49

Gaseous Monitor & Meteorology:

Site Sloughhouse-Sloughhouse Rd.

Start Date 7/1/97 7/1/97 7/1/97

Collecting Agency SMAQMD

Analytical Lab N/A

Reporting Agency CARB

Pollutant Ozone Wind Direction Wind Speed

Parameter code 44201 61104 61103

POC 1 1 1

Instrument manufacturer and model TAPI 400

Climatronics

F-460 WD sensor

Climatronics

F-460 WS sensor

Sampling method UV Absorption Wind Vane Anemometer

Sampling method code 087 020 020

FRM/FEM/ARM/Other FEM Other Other

Suitable for comparison against annual PM2.5 N/A N/A N/A

Monitoring objective Public info Public info Public info

Monitor type SLAMS SLAMS SLAMS

Site type Max O3 concentration N/A N/A

Spatial scale Neighborhood N/A N/A

Current sampling frequency Continuous Continuous Continuous

Sampling season Year Round Year Round Year Round

Distance from supporting structure (m) 1.8 2.4 2.4

Distance from obstructions on roof (m) N/A N/A N/A

Distance from obstructions not on roof (m) 6 m 6 6

Distance from trees (m) 16 16 16

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

Distance between collocated monitors N/A N/A N/A

Unrestricted airflow >= 270 deg arc Yes Yes Yes

Probe height (m, agl) 4.6 5.2 5.2

Probe material FEP Teflon N/A N/A

Residence time 2 N/A N/A

Any changes in the next 18 months? No No No

Frequency of one-point QC check Daily N/A N/A

Last Annual Performance Evaluation 10/13/11 10/13/11 10/13/11
50

Particulate Matter Monitor:

Site Sloughhouse-Sloughhouse Rd.

Start Date 11/1/08

Collecting Agency SMAQMD

Analytical Lab N/A

Reporting Agency N/A

Pollutant PM2.5

Parameter code 88501

POC N/A

Instrument manufacturer and model Met One E-BAM

Sampling method Low Volume/VSCC

Sampling method code 731

FRM/FEM/ARM/Other Non-FEM

Suitable for comparison against annual PM2.5 No

Monitoring objective Research

Monitor type SPM

Site type Upwind/Background

Spatial scale N/A

Current sampling frequency Continuous

Sampling season November-February

Distance from supporting structure (m) N/A

Distance from obstructions on roof (m) N/A

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

Distance from trees (m) 16

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

Distance between collocated monitors N/A

Unrestricted airflow >= 270 deg arc Yes

Probe height (m, agl) 2

Probe material N/A

Residence time N/A

Any changes in the next 18 months? Yes

Frequency of flow rate verification for PM 

monitors N/A

Last two semi-annual flow rate audits for PM 

monitors N/A
51

B.9 SACRAMENTO HEALTH DEPT-STOCKTON BLVD

This PM monitoring site has been in existence since the late 1950s. This site 

measures PM-10 SSI, PM-10 TEOM, and PM-2.5 FRM.

Site Name Sacramento Health Department-Stockton 

Blvd.

AQS Site No. 06-067-4001

Geographic Coordinates 38.556326°, -121.458499° (WGS84)

Location Rooftop in urban area located 2 miles eastsoutheast of downtown Sacramento. 

Address 2221 Stockton Blvd, Sacramento, CA 95817

County Sacramento

Distance from roadway 46 m

Average Daily Traffic 28,090 Vehicles/Day (City of Sacramento, 

2005)

Ground Cover Rooftop (surrounding area is paved)

Representative Area (MSA) Sacramento--Arden-Arcade--Roseville, CA
52

Particulate Matter Monitors:

Site Sacramento-Health Dept.

Start Date 1/1/86 8/1/94 1/1/99

Collecting Agency SMAQMD SMAQMD SMAQMD

Analytical Lab SMAQMD N/A CARB

Reporting Agency CARB CARB CARB

Pollutant PM10 PM10 PM2.5

Parameter code 81102 85101 88101

POC 2 3 1

Instrument manufacturer and model Sierra Anderson 1200 R & P 1400A R & P 2025

Sampling method

Hi-Volume/Size Selective 

Inlet Low Volume Low Volume/VSCC

Sampling method code 063 079 118

FRM/FEM/ARM/Other FRM FEM FRM

Suitable for comparison against annual PM2.5 N/A N/A Yes

Monitoring objective Public info Public info Public info

Monitor type SLAMS SLAMS SLAMS

Site type Population Exposure Population Exposure Population Exposure

Spatial scale Neighborhood Neighborhood Neighborhood

Current sampling frequency 1:6 Continuous 1:3

Sampling season Year Round Year Round Year Round

Distance from supporting structure (m) 2 2 2

Distance from obstructions on roof (m) N/A N/A N/A

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

Distance from trees (m) 20 20 20

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

Distance between collocated monitors N/A N/A N/A

Unrestricted airflow >= 270 deg arc Yes Yes Yes

Probe height (m, agl) 5.4 5.4 5.4

Probe material N/A N/A N/A

Residence time N/A N/A N/A

Any changes in the next 18 months? Yes Yes Yes

Frequency of flow rate verification for PM 

monitors Monthly Bi-Monthly Monthly

Last two semi-annual flow rate audits for PM 

monitors

3/8/11

10/6/11

3/8/11

10/6/11

3/8/11

10/6/11
53

B.10 SACRAMENTO-1309 T STREET

The Sacramento-1309 T Street site is operated by the California Air Resources 

Board/Monitoring and Laboratory Division/Special Purpose Monitoring Section. 

This site has been in existence since 1989.

This middle scale SLAMS air monitoring site measures O3, NO2, PM2.5 FRM, 

Speciated PM2.5, PM2.5 BAM, PM10 SSI, WD, WS, TMP, RH, and Atmospheric 

Pressure.

Site Name Sacramento-1309 T Street

AQS Site No. 06-067-0010

Geographic Coordinates 38.558333°, -121.491944 (NAD27)

Location Residential area located in downtown 

Sacramento

Address 1309 T Street, Sacramento, CA 95814

County Sacramento

Distance from roadway 30 m

Average Daily Traffic 3,102 Vehicles/Day (City of Sacramento, 

2009)

Ground Cover Rooftop site (residential area is paved)

Representative Area (MSA) Sacramento--Arden-Arcade--Roseville, CA
54

Gaseous Monitors:

Site Sacramento-1309 T St.

Start Date 4/1/89 4/1/89

Collecting Agency CARB

Analytical Lab N/A

Reporting Agency CARB

Pollutant Ozone Nitrogen Dioxide

Parameter code 44201 42602

POC 1 1

Instrument manufacturer and model TAPI 400 TEI 42C

Sampling method UV Absorption Chemiluminescence

Sampling method code 087 074

FRM/FEM/ARM/Other FEM FRM

Suitable for comparison against annual PM2.5 N/A N/A

Monitoring objective Public info Public info

Monitor type SLAMS SLAMS

Site type Population Exposure Population Exposure

Spatial scale Urban Middle

Current sampling frequency Continuous Continuous

Sampling season Year Round Year Round

Distance from supporting structure (m) 3 3

Distance from obstructions on roof (m) N/A N/A

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

Distance from trees (m) 50 50

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

Distance between collocated monitors N/A N/A

Unrestricted airflow >= 270 deg arc Yes Yes

Probe height (m, agl) 11.7 11.7

Probe material FEP Teflon FEP Teflon

Residence time 5.4 6

Any changes in the next 18 months? No No

Frequency of one-point QC check Daily Daily

Last Annual Performance Evaluation 

Please contact site operator

(California Air Resource Board)
55

Particulate Matter Monitors:

Site Sacramento-1309 T St.

Start Date 4/1/89 12/1/98 5/1/04 4/1/07

Collecting Agency CARB CARB CARB CARB

Analytical Lab SMAQMD CARB N/A RTI

Reporting Agency CARB CARB CARB RTI

Pollutant PM10 PM2.5 PM2.5 Speciated PM2.5

Parameter code 81102 88101 88501 68103

POC 1 1 3 5

Instrument manufacturer and model Sierra Anderson 1200 R & P 2025 Met One 1020 BAM Met One SASS

Sampling method

Hi-Volume/Size Selective 

Inlet Low volume/VSCC Low Volume/VSCC SASS

Sampling method code 063 118 731 810, 812

FRM/FEM/ARM/Other FRM FRM Pre-FEM Other

Suitable for comparison against annual PM2.5 N/A Yes No No

Monitoring objective Public info Public info Public info Research

Monitor type SLAMS SLAMS SPM SPM (not a CSN site)

Site type Population Exposure Population Exposure Population Exposure Population Exposure

Spatial scale Neighborhood Neighborhood Neighborhood Neighborhood

Current sampling frequency 1:6 1:3 Continuous 1:6

Sampling season Year Round Year Round Year Round Year Round

Distance from supporting structure (m) 1.5 1.5 2 1.9

Distance from obstructions on roof (m) N/A N/A N/A N/A

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

Distance from trees (m) 50 50 50 50

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

Distance between collocated monitors N/A N/A N/A N/A

Unrestricted airflow >= 270 deg arc Yes Yes Yes Yes

Probe height (m, agl) 10 10 10 10

Probe material N/A N/A N/A N/A

Residence time N/A N/A N/A N/A

Any changes in the next 18 months? No No No No

Frequency of flow rate verification for PM 

monitors Monthly Monthly Bi-monthly Monthly

Last two semi-annual flow rate audits for PM 

monitors Please contact site operator (California Air Resource Board) N/A
56

Meteorology:

Site Sacramento-1309 T St.

Start Date 2/1/92 2/1/92 2/1/92 2/1/92 2/1/92

Collecting Agency CARB

Analytical Lab N/A

Reporting Agency CARB

Pollutant

Ambient 

Temperature Relative Humidity

Barometric 

Pressure Wind Direction Wind Speed

Parameter code 62101 62201 64101 61102 61101

POC 1 1 1 1 1

Instrument manufacturer and model Met-One 060A-2 Met-One 083D-0-6 Met-One 090D-26 Met-One 020-C Met-One 010-C

Sampling method Thermistor

Polymer Thin Film 

Capacitor Barometric sensor Wind Vane Wind Cups

Sampling method code 040 061 014 066 066

FRM/FEM/ARM/Other Other Other Other Other Other

Suitable for comparison against annual PM2.5 N/A

Monitoring objective Public info

Monitor type SLAMS

Site type N/A

Spatial scale N/A

Current sampling frequency Continuous

Sampling season Year Round

Distance from supporting structure (m) 9 9 2 9 9

Distance from obstructions on roof (m) N/A N/A N/A N/A N/A

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

Distance from trees (m) 50 50 50 50 50

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

Distance between collocated monitors N/A N/A N/A N/A N/A

Unrestricted airflow >= 270 deg arc Yes Yes Yes Yes Yes

Probe height (m, agl) 15 15 12 15 15

Probe material N/A N/A N/A N/A N/A

Residence time N/A N/A N/A N/A N/A

Any changes in the next 18 months? No No No No No

Frequency of one-point QC check N/A N/A N/A N/A N/A

Last Annual Performance Evaluation Please contact site operator (California Air Resource Board)
57

B.11 RANCHO SECO

Rancho Seco is a seasonal PM2.5 special purpose monitoring site, established 

in November 2008. The PM2.5 E-BAM data will be collected, during the months of 

November through March, for the South Sacramento County Winter PM2.5 

Study.

This study is extended due to poor data capture rate at the beginning of the study 

period.

Site Name Rancho Seco

AQS Site No. NA

Geographic Coordinates 38.343812°, -121.109977° (WGS84)

Location Located at former Rancho Seco Nuclear 

Power Plant in rural area located 27 miles 

southeast of downtown Sacramento.

Address No street address, Herald, CA 95638

County Sacramento

Distance from roadway Approximately 75 feet

Average Daily Traffic 500 Vehicles/Day (estimated)

Ground Cover Vegetated

Representative Area (MSA) Sacramento--Arden-Arcade--Roseville, CA
58

Particulate Samplers:

Site Rancho Seco

Start Date 11/1/08

Collecting Agency SMAQMD

Analytical Lab N/A

Reporting Agency N/A

Pollutant PM2.5

Parameter code 88501

POC N/A

Instrument manufacturer and model Met One E-BAM

Sampling method Low Volume/VSCC

Sampling method code 731

FRM/FEM/ARM/Other Non-FEM

Suitable for comparison against annual PM2.5 No

Monitoring objective Research

Monitor type SPM

Site type Upwind/Background

Spatial scale N/A

Current sampling frequency Continuous

Sampling season November-February

Distance from supporting structure (m) N/A

Distance from obstructions on roof (m) N/A

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

Distance from trees (m) > 10 meters

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

Distance between collocated monitors N/A

Unrestricted airflow >= 270 deg arc Yes

Probe height (m, agl) 2

Probe material N/A

Residence time N/A

Any changes in the next 18 months? No

Frequency of flow rate verification for PM 

monitors N/A

Last two semi-annual flow rate audits for PM 

monitors N/A
59

APPENDIX C – NEAR-ROAD NO2 MONITORING

Introduction

In 2010, U.S. EPA promulgated new nitrogen dioxide (NO2) monitoring requirements. 

Local agencies are required to install and operate new near-road monitoring stations 

where hourly maximum NO2 emissions are expected. The Sacramento—ArdenArcade—Roseville CBSA is required to have one near-road NO2 monitoring site as per 

population and traffic criteria given in Appendix D to Part 58 in Title 40, Code of Federal 

Regulation. The near-road NO2 monitoring site must be operational by January 1, 2013

as this CBSA MSA is in phase one of U.S. EPA’s Build and Hold plan. Recently, the 

EPA postponed the operational deadline to January 1, 2014.

To determine the location with the maximum NO2 emissions, a number of potential 

locations were reviewed. Each of these locations was reviewed according to the 

guidelines provided by U.S. EPA in the Near-Road NO2 Technical Assistance 

Document (TAD). For example, AADT, number of heavy duty trucks, site

characteristics, and other logical issues are among the factors considered. The final 

site selection meets the probe and siting criteria provided in Appendix D and E to 40 

CFR Part 58. This appendix explains the reasons for selecting Bercut Dr. as the 

candidate near-road NO2 monitoring site for this CBSA.

Traffic Data

Bercut Dr. would monitor NO2 emissions from Interstate 5. The 150 block of Bercut Dr. 

is located north of I Street exit on Interstate 5 (ahead leg of postmile 23.799), which is 

less than one mile northeast of Downtown Sacramento. Interstate 5 is a major highway 

that runs parallel to the West Coast. In addition to linking with two regional highways, it 

also links with Interstate 80, a transcontinental highway. Figure C-1 shows the locations 

of top potential sites and highways in the region. According to the 2010 latest statistics 

maintained by the Traffic Data Branch of California Department of Transportation 

(―Caltrans‖), AADT on this targeted roadway is 186,000, of which 18,000 is heavy duty 

truck traffic. 

Although AADT at the Bercut Dr. site ranks #9 in the region, it ranks #1 in terms of fleet 

equivalent (FE) AADT. FE AADT is a quantitative way to compare NO2 emissions 

between roadways with different fleet mix. It is calculated with the heavy duty trucks vs. 

non-heavy duty vehicles emissions ratio. According to the EMission FACtors (EMFAC

2011) model developed by California Air Resource Board in 2011, heavy duty trucks 

and non-heavy duty vehicles produce 9.65 and 0.562 oz of NOx per vehicle per day, 

respectively, for scenario year 2010 in Sacramento County. The emission ratio is 

calculated and rounded to 17. At this ratio, the Bercut Dr. site is estimated to have 17% 

more NO2 emissions than the next highest location. If the national default emission 

ratio, 10, is used to calculate the FE AADT, this site would still rank the highest in FE 

AADT, which is 16% more emissions than the next highest location. 
60

Level of service (LOS) is another important factor considered. In the Transportation 

Corridor Concept Report (TCCR) prepared by Caltrans in 2010, LOS on Interstate 5 

north of I Street is rated ―F‖, the most congested condition. In April 2012, Sacramento 

Council of Government, the regional transportation project coordinator, adopted future 

construction projects in its Metropolitan Transportation Plan 2035. The plan includes 

the construction of two high occupancy vehicle lanes, one in each direction, north of I 

St. on Interstate 5 by 2035. Despite the additional lanes, the TCCR forecasts the LOS 

to remain at ―F‖ for the next twenty years.

Table C-1 details the AADT, fleet equivalent AADT, its ranking, and level of service 

(LOS) of the top ranking sites in this CBSA. For brevity, only potential sites among the 

highest ranked AADT or FE AADT are listed. Table C-2 details the NOx model 

emission in Sacramento County for calculation of emission ratio.
61

Figure C-1

Maps of Potential Sites
62

Table C-1

AADT Matrix of Top Ranking in Sacramento MSA

RouteDirectionLocationPostmileLatitudeLongitudeAADTAADT RankTrucksFE AADT(ER. = 10)FE AADT Rank(ER. = 10)FE AADT(ER. = 17)FE AADT Rank(ER. = 17)LOS

5 N. of I St. 23.799 38.5926° -121.5040° 186K 9 18K 347K 1 475K 1 F

5 S. of Jct. Rte. 80 26.722 38.6176° -121.5137° 159K 18 15K 296K 4 406K 2 F

99 N. of Florin Rd. 19.612 38.4988° -121.4488° 179K 10 12K 283K 7 367K 3 F

99 S. of Jct. Rtes. 50/51/5 24.351 38.5550° -121.4744° 212K 5 10K 298K 2 367K 4 F

5 S. of Jct. Rte. 50 22.565 38.5610° -121.5146° 143K 29 14K 267K 12 365K 5 F

65 N. of Jct. Rte. 80 (Placer Cnty) 4.863 38.7723° -121.2526° 104K 43 16K 245K 20 358K 6 D

99 N. of Fruitridge Rd. 21.944 38.5287° -121.4696° 191K 8 10K 282K 8 354K 7 F

5 N. of Jct. Rte. 80 26.722 38.6315° -121.5201° 152K 24 12K 263K 13 351K 8 E

80 E. of Jct. Rte. 51 10.989 38.6519° -121.3702° 213K 4 8K 288K 6 347K 9 F

51 W. of Jct. Rte. 160 West 3.688 38.5995° -121.4409° 117K 36 14K 245K 21 347K 10 F

50 E. of Jct. Rtes. 51/99 0 216K 3 8K 288K 5 346K 11 F

50 E. of 65th St. 2.628 206K 6 8K 281K 9 341K 12 F

50 E. of Jct. Rte. 160 15th/16th St 1.37 246K 1 6K 297K 3 338K 13 F

50 W. of 65th St. 2.628 200K 7 8K 275K 11 334K 14 F

80 E. of Antelope Rd. 16.685 168K 15 10K 259K 16 332K 15 F

99 S. of Fruitridge Rd. 21.944 172K 14 10K 260K 14 331K 16 F

80 W. of West Jct. Rte. 50 (Yolo Cnty) 9.905 150K 26 11K 249K 18 329K 17 D

80 E. of Greenback Ln. 14.454 179K 10 9K 260K 15 324K 18 F

50 E. of Jct. Rte. 5 0.35 226K 2 6K 280K 10 323K 19 F

99 N. of Mack Rd. 17.656 161K 17 10K 248K 19 317K 20 F

5 N. of Pocket/Meadowview Rds. 16.147 101K 45 13K 221K 31 317K 21 F

99 S. of Stockton Blvd. 17.242 153K 23 10K 241K 23 312K 22 F

5 S. of Jct. Rte. 99 North 29.907 108K 42 12K 220K 32 310K 23 E

50 E. of Jct. Rte. 16 3.674 179K 10 8K 250K 17 306K 24 F

80 E. of Atlantic St. (Placer Cnty) 3.07 157K 21 9K 238K 24 303K 25 F

80 W. of Riverside Dr. (Placer Cnty) 0.268 165K 16 9K 242K 22 303K 26 F

80 W. of Richards Blvd. (Yolo Cnty) 0.237 125K 33 11K 224K 29 303K 27 D

99 N. of Stockton Blvd. 17.242 130K 32 10K 223K 30 298K 28 F

80 W. of Jct. Rte. 65 (Placer Cnty) 4.16 147K 27 9K 229K 28 294K 29 F
63

Table C-2

Model NOx Emission for Sacramento County

EMFAC 2011

2010 Estimated Annual Emissions

EMFAC 2011 Vehicle Categories

Sacramento COUNTY

Sacramento Valley AIR BASIN

Sacramento Metropolitan AQMD 

VehaFuel Pop NOX_TOTEX Emission 

Rate (Vehicles) (Tons/day) (oz/d/V)

LDA GAS&DSL 474,531 5.719

LDT1 GAS&DSL 67,074 1.535

LDT2 GAS&DSL 162,705 3.440

MDV GAS&DSL 139,198 4.121

Total 843,508 14.82 0.562

H e a v y D u t y V e h i c l e s

LHD1 GAS&DSL 39,537 5.683

LHD2 GAS&DSL 5,573 1.028

T6 Ag DSL 740 0.3099

T6 CAIRP heavy DSL 10 0.0060

T6 CAIRP small DSL 32 0.0173

T6 instate construction heavy DSL 245 0.1529

T6 instate construction small DSL 596 0.3546

T6 instate heavy DSL 1,759 1.090

T6 instate small DSL 4,312 2.529

T6 OOS heavy DSL 6 0.0034

T6 OOS small DSL 18 0.0099

T6 Public DSL 2,072 0.4451

T6 utility DSL 110 0.0210

T6TS GAS 3,023 0.4807

T7 Ag DSL 327 0.4426

T7 CAIRP DSL 449 1.504

T7 CAIRP construction DSL 15 0.0518

T7 NNOOS DSL 453 1.271

T7 NOOS DSL 164 0.5506

T7 other port DSL 8 0.0294

T7 POAK DSL 18 0.0582

T7 POLA DSL 0 0.0000

T7 Public DSL 522 0.2976

T7 Single DSL 339 0.4083

T7 single construction DSL 121 0.1463

T7 SWCV DSL 145 0.1345

T7 tractor DSL 438 1.180

T7 tractor construction DSL 91 0.1211

T7 utility DSL 19 0.0093

T7IS GAS 331 0.2007

Total 61,475 18.53 9.65

a Motorcycles, motorhomes, motor coaches, and buses are excluded from this calculation
64

Physical Considerations for the Selected Site

Bercut Dr. Site is selected partly for its site characteristics. According to the Near-Road 

NO2 TAD, there are four components to physical site characteristics to consider: 

roadway design, roadside structure, terrain, and meteorology. Each of these 

components may have desirable or undesirable attributes that alter NO2 concentration 

captured. The characteristics of Bercut Dr. Site are listed below.

 Roadway Design – Interstate 5, north of I St., is elevated and can be divided into 

two portions: bridge and solid fill. The Bercut Dr. site is located next to the 

elevated roadway with solid fill and is 250 m away from the bridge portion to 

avoid enhanced dispersion effect. Maximum NO2 can be captured at this 

location for two reasons. First, the elevated roadway, approximately 5 m above 

surrounding ground level, with solid fill has a similar emissions profile as a flat 

roadway, which allows direct sampling. Also, the inlet probe will be placed 

slightly above roadway level, at 6 m, to minimize sample dispersion. At this 

height placement, the inlet probe also meets the Probe and Monitoring Path 

Siting Criteria as specified in 40 CFR Part 58.

 Roadside structure – This portion of Interstate 5 does not have obstructions (i.e., 

sound wall) that funnels NO2 downwind and prevents the capture of the highest 

NO2 concentration. The District is working with Caltrans to remove short 

vegetation along the roadway to minimize any adsorption or reaction effect on 

NO2.

 Terrain – Sacramento is located in a flat valley. Terrain does not present a 

challenge.

 Meteorology – According to meteorological data observed at an airport five miles 

south of Bercut Dr., Sacramento Executive Airport, prevailing wind is at this 

location from the south-southwest. Hence, the station would be downwind of 

Interstate 5.

Bercut Dr. Site has no undesirable attributes that would decrease the maximum NO2

captured. Electric power and phone service are also readily accessible. The site can 

also be easily accessed by a site operator. The District is currently working with the 

land owner to draft a lease agreement.

The sampling inlet probe will be placed approximately 20 m from the closest highway 

lane. This is as close as practical due to the obstruction of the slope of the solid-fill, 

elevated roadway and a drainage canal that is parallel to the highway. The probe 

placement meets the recommendation provided in the Near-Road NO2 TAD as well as 

the Near-Road NO2 Siting Criteria in Appendix E to 40 CFR, Part 58. 

Table C-3 lists the site characteristics of among top ranking sites. 
65

Population Exposure

As instructed by the TAD, Bercut Dr. Site was selected despite having limited population 

exposure to NO2. The TAD states that population exposure should only be used if two 

identical sites existed. Currently, most of area near Bercut Dr. is not developed for 

residential housing. Future urban development would likely increase population 

exposure, due to planned high density housing and commercial retail.

Conclusion

The Bercut Dr. site has the highest number of heavy duty truck traffic in the region that 

contributes to the highest FE-AADT and emissions compared to other near-road 

locations. Because of the site characteristic at Bercut Dr., it allows direct sampling of 

NO2 emissions Therefore, this site is likely to measure the highest NO2 concentration in 

Sacramento—Arden-Arcade-Roseville CBSA.
66

Table C-3

Site Characteristic

RouteDescriptionAADT RankFE AADT Rank(ER = 17)

Roadway Design

Roadway 

Structure Infrastructure

Interchanges / 

Lane Merge

5 N. of I St. 9 1 Section of bridge 

and elevated 

roadway with solid 

fill (18ft, 1:3 slope)

None Above ground 

power pole

Upwind of on-ramp

5 S. of Jct. Rte. 80 18 2 Mostly at grade 

with surrounding

Sound wall on east 

side (residential 

side) of hwy

Business park and 

parking lot on west 

side of hwy

Upwind of 

interchange

99 N. of Florin Rd. 10 3 At grade with 

surrounding

Guardrail, sound 

wall on both side of 

hwy except SB offramp

Commercial 

building/

parking lot

Downwind of onramp

99 S. of Jct. Rtes. 50/51/5 5 4 Bridge, becomes 

elevated roadway 

with solid fill, 

becomes 

depressed roadway

Sound wall on both 

side of hwy, except 

for bridge portion

Street lamps inside 

ROW

Interchange and 

lane merge

5 S. of Jct. Rte. 50 29 5 Elevated bridge, 

gradually becoming 

flat

Sound wall on east 

side (residential 

side) of hwy

Street lamps inside 

ROW

Interchange/

Merge lane

65 N. of Jct. Rte. 80 (Placer 

Cnty)

43 6 Bridge and slightly 

depressed roadway

None Stores/

Commercial 

Parking Lot

Interchange

99 N. of Fruitridge Rd. 8 7 At grade with 

surrounding

Sound wall on both 

side of hwy, except 

the very end of SB 

off-ramp

Street lamps inside 

ROW

Downwind of onramp
67

Table C-3 (cont.)

RouteDescriptionAADT RankFE AADT Rank(ER = 17)

Roadway Design

Roadway 

Structure Infrastructure

Interchanges / 

Lane Merge

5 N. of Jct. Rte. 80 24 8 Bridge overpass, 

becomes at grade 

with surrounding to 

the north

None Street lamps inside 

ROW

Downwind of 

interchange

80 E. of Jct. Rte. 51 4 9 At grade with 

surrounding

Sound wall on both 

side of hwy

None

51 W. of Jct. Rte. 160 West 36 10 At grade with 

surrounding

Guardrail separates 

hwy 51 from 16

Above ground 

power pole

None

50 E. of Jct. Rtes. 51/99 3 11

50 E. of 65th St. 6 12 Elevated roadway 

with solid fill

Guardrail Small parking lot 

with lights

None

50 E. of Jct. Rte. 160 15th/16th 

St

1 13 Bridge None Parking lot, light rail 

station

None

50 W. of 65th St. 7 14 Bridge and 

elevated roadway 

with solid fill

None Above ground 

power line

None

80 E. of Antelope Rd. 15 15 At grade with 

surrounding

Sound wall on both 

side of highway

Downwind of onramp

99 S. of Fruitridge Rd. 14 16 Moderately sunken 

roadway

None Above ground power 

pole nearby

Relatively upwind of 

onramp

80 W. of West Jct. Rte. 50 (Yolo 

Cnty)

26 17 Slightly elevated with 

solid fill

None Street lamps inside 

ROW

Lane merge, 

relatively upwind of 

interchange

80 E. of Greenback Ln. 10 18

50 E. of Jct. Rte. 5 2 19 Mostly bridge, 2ft 

high, with limited 

elevated roadway 

with 1:3 slope

None Parking lot in bridge 

portion of hwy

None

99 N. of Mack Rd. 17 20
68

Table C-4

Land Use and Potential Logistical Issues

Route

Description

AADT RankFE AADT Rank(ER. = 17)

Surrounding Land Use Logistical

5 N. of I St. 9 1 Mostly commercial (water treatment plant, 

small-mid size business, motels, very few 

residences); open area to be developed 

into museum, high density housing (10-

12K units), and retail

Power and phone line readily available, 

easy site access

5 S. of Jct. Rte. 80 18 2 Commercial (business park) and 

suburban residential area

Difficult to meet siting criteria due to tall, 

mature tree near the only location for a 

potential station

99 N. of Florin Rd. 10 3 Small and big business, including big box 

retail, suburban residence

Limited space available, power and 

phone nearby

99 S. of Jct. Rtes. 50/51/5 5 4 Mostly residential Sound wall on both side of hwy, except 

for bridge portion

5 S. of Jct. Rte. 50 29 5 Open water with marina and urban forest, 

medium density residential area; 

elementary school within 1000ft

Difficult to meet siting criteria due to tall, 

mature tree near the only location for a 

potential station

65 N. of Jct. Rte. 80 (Placer 

Cnty)

43 6 Commercial (shopping area) Required to sough permission from 

private property owner

99 N. of Fruitridge Rd. 8 7 Commercial/ Residential Sound wall on both side of hwy, except 

the very end of SB off-ramp
69

Table C-4 (cont.)

Route

Description

AADT RankFE AADT Rank(ER. = 17)

Surrounding Land Use Logistical

5 N. of Jct. Rte. 80 24 8 Open area in the immediate vicinity; 

suburban residence nearby (approx 700ft 

from roadway)

Lack of power and phone, may have 

difficulty accessing this site

80 E. of Jct. Rte. 51 4 9 Residential

51 W. of Jct. Rte. 160 West 36 10 Commercial (small business, warehouse, 

hotels), with a few residence

Limited space available, power and 

phone likely easily available

50 E. of Jct. Rtes. 51/99 3 11

50 E. of 65th St. 6 12 Residential/ Commercial

50 E. of Jct. Rte. 160 15th/16th 

St

1 13 Commercial/ Residential

50 W. of 65th St. 7 14 Commercial/ Residential

80 E. of Antelope Rd. 15 15 Residential Sound wall on both side of highway

99 S. of Fruitridge Rd. 14 16 Commercial/ Residential Moderately sunken roadway

80 W. of West Jct. Rte. 50 (Yolo 

Cnty)

26 17 Commercial/ Residential May of difficulty accessing, power and 

phone available

80 E. of Greenback Ln. 10 18

50 E. of Jct. Rte. 5 2 19 Residential/ Commercial

99 N. of Mack Rd. 17 20
70

Figure C-2

Aerial View of Bercut Dr.

*Nearby brown, dead pine trees are planned for removal; other trees are not a flow obstacle
71

Figure C-3

Street Level View of Bercut Dr. (looking toward SSW)