Air Quality Monitoring Network Plan – July 2009 

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APPENDIX C 

SOUTH COAST AIR QUALITY MANGEMENT DISTRICT 

NATIONAL CORE (NCORE) MONITORING NETWORK PLAN 

JULY 2009 

Prepared by 

Rene M. Bermudez 

Principal Air Quality Instrument Specialist 

Philip M. Fine 

Atmospheric Measurements Manager 
Air Quality Monitoring Network Plan – July 2009 

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Introduction 

On October 17th, 2006 the Environmental Protection Agency (EPA) issued final amendments to 

the ambient air monitoring requirements for criteria pollutants contained in 40 CFR parts 50, 53 

and 58. The purpose of the amendments are to enhance ambient air quality monitoring to better 

serve current and future air quality management and research needs. The final amendments 

detail a new ambient air monitoring requirement for states to establish and operate a network of 

National Core (NCore) multipollutant monitoring stations. The South Coast AQMD NCore 

monitoring network plan includes details for the implementation of the NCore monitoring 

locations to be operational by January 1, 2011. 

Public Comments 

Pursuant to Federal regulations, this plan is to be made available for public inspection and 

comments for at least 30 days prior to submission to U.S. EPA. Hard copies of this document 

were made available on June 1, 2009 at the South Coast AQMD Public Information Desk in 

Diamond Bar, CA. The document was also posted to the public South Coast AQMD website at 

www.aqmd.gov on June 1, 2009, with links under the South Coast AQMD home page titled 

“Current Programs, Events and Topics” Links to the document were also provided in the “Air 

Quality” area of the website. The draft document will also be made available to U.S. EPA 

during this period for review. 

Monitoring Objectives 

The goals for NCore multipollutant stations are to track long-term trends of emissions control 

programs; to support health assessments that contribute to ongoing reviews of the National 

Ambient Air Quality Standards (NAAQS); to aid in the development of emissions control 

strategies through air quality model evaluation and other observational methods; to support 

scientific studies ranging across technological, health, and atmospheric process disciplines; to 

support ecosystem assessments; to provide data for use in attainment and non-attainment 

designations and for public reporting and forecasting of the AQI. 

Methodology 

Methods employed in NCore multipollutant sites used to measure SO2, CO, NO2, O3, and PM2.5

are reference or equivalent method samplers as defined in 40 CFR part 58.1 or Approved 

Regional Method (ARM) samplers as defined in appendix C to part 58 section 2.4. Instruments 

purchased by South Coast AQMD for use at NCore stations are included in Table 1. 

Monitoring Requirements 

NCore multipollutant sites measure multiple pollutants in order to support integrated air quality 

management data needs. NCore sites include neighborhood and urban scale measurements in 

metropolitan areas and rural areas. Sites are long term and sited away from direct emission 

sources that could impact the ability to detect area-wide concentrations. NCore sites for South 

Coast AQMD are shown in Table 2. Considerations in the site selection process include: 

Siting Criteria – Sites selected as NCore stations are urban or rural locations. South 

Coast AQMD NCore sites are located in urban areas with monitors sited at neighborhood 

scales of representativeness. This provides the level of exposure consistent throughout 
Air Quality Monitoring Network Plan – July 2009 

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the metropolitan area. Siting specifications for Los Angeles (Main) and Rubidoux 

stations are detailed in site reports included as an attachment to appendix C. 

Number of Stations – Each state is required to operate at least one NCore site. States 

such as California with multiple MSAs are required to identify one or two additional 

NCore sites in order to account for their unique situation. EPA guidance states that 

NCore stations should, when possible, be collocated with other multipollutant stations 

including Photochemical Assessment Monitoring Stations (PAMS), National Air Toxics 

Trends Stations (NATTS), and Speciation Trends Network (STN) sites to utilize the same 

monitoring platform and equipment to meet the objectives of multiple programs. The 

South Coast AQMD NCore monitoring network stations are to be located at Los Angeles 

(Main) and Rubidoux air monitoring sites. Selection of Los Angeles (Main) and 

Rubidoux sites for NCore stations will meet the EPA goal of collocation among 

multipollutant stations such as PAMS, NATTS, and STN. Site reports for both the Los 

Angeles (Main) and Rubidoux stations are included as an attachment to appendix C. 

Measurements – EPA ambient air monitoring requirements specify that NCore stations 

must measure PM2.5 particle mass using continuous and integrated filter based samplers, 

speciated PM2.5, PM10-2.5 (coarse) mass, speciated PM10-2.5 mass, O3, trace-level SO2, 

trace-level CO, NO/NOy, wind speed and direction, relative humidity and ambient 

temperature. In addition to the previous requirements, the ten most populated MSA/CSA 

in each EPA region must measure lead (Pb) at the same site or elsewhere in the 

MSA/CSA boundary. South Coast AQMD currently meets the requirement for PM2.5, 

O3, wind speed and direction, relative humidity and ambient temperature at both the Los 

Angeles (Main) and Rubidoux stations. NOy and trace level CO and SO2 monitors have 

been purchased and are currently undergoing acceptance testing with installation planned 

during fiscal year (FY) 2009-10. Equipment purchases for PM10-2.5 mass and speciation 

are being delayed in anticipation of possible upcoming U.S. EPA federal equivalency 

designations and the prospect of additional funding. South Coast AQMD is committed to 

acquire and deploy the coarse PM instrumentation prior to January 1, 2011 statutory 

deadline. A comprehensive list of monitors at both the Los Angeles (Main) and 

Rubidoux stations are included in the site report as an attachment to appendix C. 

 

Operating schedules – Manual PM2.5 samplers at NCore stations, and required regional 

background/transport sites must operate at least on a 1:3 day sampling frequency. 

Sampling frequencies for monitors at Los Angeles (Main) and Rubidoux are on a daily 

schedule and included in the site reports attached to appendix C. 

During the coming year South Coast AQMD plans to complete acceptance testing for trace level 

CO, SO2 and NOy analyzers. Once competed, analyzers are to be installed at the Los Angeles 

(Main) and Rubidoux NCore stations during FY 2009-10. Additional supporting equipment to 

be purchased during FY 2009-10 includes zero air generators and data loggers with digital 

capabilities. 
Air Quality Monitoring Network Plan – July 2009 

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TABLE 1 New NCore Monitors 

Monitor Type Model\Manufacturer Designation Analysis Method Sampling 

frequency 

Trace-level 

CO 

Teledyne API 

300EU 

NCore Non-dispersive 

Infrared (NDIR) 

Continuous 

NO/NOy Thermo Scientific 

42iy 

NCore Chemiluminescence Continuous 

Trace-level 

SO2 

Thermo Scientific 

43i-TLE 

NCore Pulsed 

Fluorescence SO2 

Analyzer 

Continuous 

TABLE 2 NCore Monitoring Locations 

Station AQS Monitors Programs 

Los 

Angeles1(Main) 060371103 CO,NO2,SO2,O3,PM10,Pb,PM2.5,SO4

NCORE, PAMS, 

NATTS, STN 

Rubidoux1 060658001 CO,NO2,SO2,O3,PM10,Pb,PM2.5,SO4 NCORE, PAMS, 

NATTS, STN 

1 – New PAMS sites to begin July 1st, 2009 
Air Quality Monitoring Network Plan – July 2009 

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South Coast AQMD 

Site Survey Report for Los Angeles-North Main Street 

Last updated March 2009 

 

AIRS Number ARB Number Site Start Date Reporting Agency and Agency Code 

060371103 70087 09/79 South Coast AQMD (061)

Site Address County Air Basin Latitude Longitude Elevation

1630 North Main Street 

Los Angeles, CA 90012 Los Angeles South Coast 34° 03' 59" 118° 13' 36" 89 
Air Quality Monitoring Network Plan – July 2009 

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Air Quality Monitoring Network Plan – July 2009 

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Site Survey Report

 

Siting Information

 Site Name: Los Angeles- 

 North Main Street Date: 03/10/09 State Code: 70087 AIRS Number: 060371103 

 Latitude: 34° 03' 59" Longitude: 118° 13' 36" Elevation (m): 89 Address: 1630 North Main St 

 Los Angeles, CA 90012 Senior AQIS: Albert Dietrich Site Technician: Carl Thompson Site Phone: (323) 225-0178 

Operating Agency: South Coast AQMD 

General Siting Conditions

Station Temperature Traffic Topography Predominant Wind Direction: W 

 Controlled: Yes Description: Commercial Site: Level Arc Air Flow (Deg): 360 Degrees 

 Recorded: Yes Distance: 40 meters Region: Level Probe Last Cleaned: 05/12/09 

 Count (Veh/Day): 10000 QA Manual Manifold Clean: Yes 

Meteorology Non-vehicular 

Local Sources Approved: Yes Cleaning Schedule: 6 Months 

 Located With Instruments: Yes Description: None Agency: South Coast AQMD Autocalibrator Type: Environics 9100

 Distance: N/A Urbanization: Suburban Site Survey Complete: Yes 

 Direction: N/A Ground Cover: Asphalt Logbook Up To Date: Yes 

Action Items

Comments
Air Quality Monitoring Network Plan – July 2009 

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Detailed Site Information 

Site Name Los Angeles-North Main Street 

AQS ID (AIRS #) 060371103 

GIS coordinates Latitude: 34° 03’ 59” Longitude: 118° 13’ 36” 

Location DWP General Warehouse Building 

Address 1630 North Main Street, Los Angeles, CA 90012 

County Los Angeles 

Dist. to road 40 meters 

Traffic count 10,000 veh/day 

Groundcover Asphalt 

PEP audit? 05/19/09 

NPAP audit? 07/22/08 

Flow audit? 07/22/08 

Representative Area 31100-Los Angeles, Long Beach-Santa Ana, CA MSA 

Pollutant Carbon Monoxide Nitrogen Dioxide Ozone Sulfur Dioxide 

Monitor obj REPRESENTATIVE 

CONCENTRATION 

HIGHEST 

CONCENTRATION 

REPRESENTATIVE 

CONCENTRATION 

REPRESENTATIVE 

CONCENTRATION 

Spatial scale Neighborhood Scale Neighborhood Scale Neighborhood Scale Neighborhood Scale 

Sampling method Horiba APMA-360 42i API/Teledyne 400E TECO 43i-TLE 

Serial # 576876073 CM 08360037 520-S 0831832126 

Property # 0016214 16730 N/A 16746 

Last Calibration Date 03/10/09 03/03/09 12/12/08 02/10/09 

Analysis method N/A N/A N/A N/A 

Start date 03/79 03/79 03/79 03/79 

Operation schedule 1:1 1:1 1:1 1:1 

Sampling season All Year All Year All Year All Year

Probe height 12.3 12.3 12.3 12.3 

Distance from 

supporting structure 

2.0 2.0 2.0 2.0 

Distance from 

obstructions on roof 

N/A N/A N/A N/A 

Distance from 

obstructions not on 

roof 

N/A N/A N/A N/A 

Distance from trees N/A N/A N/A N/A 

Distance to furnace or 

incinerator flue 

N/A N/A N/A N/A 

Distance between 

collocated monitors 

N/A N/A N/A N/A 

Unrestricted airflow Yes Yes Yes Yes 

Probe material Teflon Teflon Teflon Teflon 

Residence time 7.2 7.6 8.1 9.5 

Will there be changes 

within the next 18 

months? 

No No No No 

Is it suitable for 

comparison against 

the annual PM2.5? 

N/A N/A N/A N/A 

Frequency of flow 

rate verification for 

manual PM samplers 

audit 

N/A N/A N/A N/A 
Air Quality Monitoring Network Plan – July 2009 

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Frequency of flow 

rate verification for 

automated PM 

analyzers audit 

N/A N/A N/A N/A 

Frequency of onepoint QC check 

(gaseous) 

Nightly Nightly Nightly Nightly 

Last Annual 

Performance 

Evaluation (gaseous) 

07/17/08 02/25/09 07/13/08 02/05/09 

Last two semi-annual 

flow rate audits for 

PM monitors 

N/A N/A N/A N/A 

Pollutant PM10-SSI – A PM10-SSI (Natts) – B TSP (Lead) – B TSP (Lead) – A 

Monitor obj REPRESENTATIVE 

CONCENTRATION 

REPRESENTATIVE 

CONCENTRATION 

REPRESENTATIVE 

CONCENTRATION 

REPRESENTATIVE 

CONCENTRATION 

Spatial scale Neighborhood Scale Neighborhood Scale Neighborhood Scale Neighborhood Scale 

Sampling method T300-310 Tisch 300-310 Tisch 300-310 Tisch 300-310 

Serial # 0516 0432 0568 0567 

Property # 4935 50461 1573 4967 

Last Calibration Date 03/27/09 06/04/08 03/27/09 03/27/09 

Analysis method Weighed by 

SCAQMD lab 

Weighed by 

SCAQMD lab 

Weighed by 

SCAQMD lab 

Weighed by 

SCAQMD lab 

Start date 03/79 01/07 03/79 03/79 

Operation schedule 1:6 6 per Year 1:6 1:6 

Sampling season All Year All Year All Year All Year

Probe height 11.7 11.7 11.3 11.3 

Distance from 

supporting structure 

1.5 1.5 1.1 1.1 

Distance from 

obstructions on roof 

N/A N/A N/A N/A 

Distance from 

obstructions not on 

roof 

N/A N/A N/A N/A 

Distance from trees N/A N/A N/A N/A 

Distance to furnace or 

incinerator flue 

N/A N/A N/A N/A 

Distance between 

collocated monitors 

2 2 2 2 

Unrestricted airflow Yes Yes Yes Yes 

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

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

Will there be changes 

within the next 18 

months? 

No No No No 

Is it suitable for 

comparison against 

the annual PM2.5? 

N/A N/A N/A N/A 

Frequency of flow 

rate verification for 

manual PM samplers 

audit 

Monthly Monthly N/A N/A 
Air Quality Monitoring Network Plan – July 2009 

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Frequency of flow 

rate verification for 

automated PM 

analyzers audit 

N/A N/A N/A N/A 

Frequency of onepoint QC check 

(gaseous) 

N/A N/A N/A N/A 

Last Annual 

Performance 

Evaluation (gaseous) 

N/A N/A N/A N/A 

Last two semi-annual 

flow rate audits for 

PM monitors 

05/11/09 05/11/09 N/A N/A 

Pollutant PM10 BAM BAM-PM2.5 SASS 2.5 SASS 2.5 

Monitor obj REPRESNTATIVE 

CONCENTRATION 

HIGHEST 

CONCENTRATION 

HIGHEST 

CONCENTRATION 

HIGHEST 

CONCENTRATION 

Spatial scale Neighborhood Scale Neighborhood Scale Neighborhood Scale Neighborhood Scale 

Sampling method Andersen PM10 

BAM 

MetOne 

BAM 1020 

MetOne SASS MetOne SASS 

Serial # 97 F8025 D8051 C4157 

Property # 10590 164836 (USC) E000289 E000229 

Last Calibration Date 04/18/08 12/04/08 01/06/09 07/14/08 

Analysis method N/A N/A Analyzed by 

SCAQMD lab 

Analyzed by 

SCAQMD lab 

Start date 05/01/03 12/04/08 12/10/08 02/07 

Operation schedule 1:1 1:1 1:3 1:6 

Sampling season All Year All Year All Year All Year

Probe height 12.0 12.8 12.0 12.0 

Distance from 

supporting structure 

1.8 2.6 1.8 1.8 

Distance from 

obstructions on roof 

N/A N/A N/A N/A 

Distance from obstructions not on roof N/A N/A N/A N/A 

Distance from trees N/A N/A N/A N/A 

Distance to furnace or 

incinerator flue 

N/A N/A N/A N/A 

Distance between 

collocated monitors 

2 2 2 2 

Unrestricted airflow Yes Yes Yes Yes 

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

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

Will there be changes 

within the next 18 

months? 

No No No No 

Is it suitable for 

comparison against 

the annual PM2.5? 

N/A Yes N/A N/A 

Frequency of flow 

rate verification for 

manual PM samplers 

audit 

N/A N/A Monthly Monthly 
Air Quality Monitoring Network Plan – July 2009 

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Frequency of flow 

rate verification for 

automated PM 

analyzers audit 

Monthly Bi-Weekly N/A N/A 

Frequency of onepoint QC check 

(gaseous) 

N/A N/A N/A N/A 

Last Annual 

Performance 

Evaluation (gaseous) 

N/A N/A N/A N/A 

Last two semi-annual 

flow rate audits for 

PM monitors 

04/18/08 N/A 04/18/08 04/18/08 

Pollutant SASS PM2.5 (EPA 

STN) 

PM2.5 PM2.5 Xontech 910A (Natts) 

Monitor obj REPRESENTATIVE 

CONCENTRATION 

REPRESENTATIVE 

CONCENTRATION 

REPRESENTATIVE 

CONCENTRATION 

REPRESENTATIVE 

CONCENTRATION 

Spatial scale Neighborhood Scale Neighborhood Scale Neighborhood Scale Neighborhood Scale 

Sampling method MetOne SASS Andersen 

RAAS 2.5 

Andersen 

 RAAS 2.5 

Xontech 910A 

Serial # A6186 305 347 4687 

Property # N/A E000005 E000006 E000173 

Last Calibration Date 03/27/09 12/23/08 04/14/09 02/11/09 

Analysis method EPA STN Weighed by 

SCAQMD lab 

Weighed by 

SCAQMD lab 

Analyzed by 

SCAQMD lab 

Start date 03/07/07 01/99 01/99 01/07 

Operation schedule 1:6 1:1 1:6 1:6 

Sampling season All Year All Year All Year All Year

Probe height 12.0 12.1 12.1 12.6 

Distance from 

supporting structure 

1.8 1.9 1.9 2.3 

Distance from 

obstructions on roof 

N/A N/A N/A N/A 

Distance from obstructions not on roof N/A N/A N/A N/A 

Distance from trees N/A N/A N/A N/A 

Distance to furnace or 

incinerator flue 

N/A N/A N/A N/A 

Distance between 

collocated monitors 

2 2 2 2 

Unrestricted airflow Yes Yes Yes Yes 

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

Residence time N/A N/A N/A 5.7 / 2.7 

Will there be changes 

within the next 18 

months? 

No No No No 

Is it suitable for 

comparison against 

the annual PM2.5? 

N/A Yes Yes N/A 
Air Quality Monitoring Network Plan – July 2009 

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Frequency of flow 

rate verification for 

manual PM samplers 

audit 

Monthly Monthly Monthly N/A 

Frequency of flow 

rate verification for 

automated PM 

analyzers audit 

N/A N/A N/A N/A 

Frequency of onepoint QC check 

(gaseous) 

N/A N/A N/A N/A 

Last Annual 

Performance 

Evaluation (gaseous) 

N/A 05/11/09 05/11/09 N/A 

Last two semi-annual 

flow rate audits for 

PM monitors 

04/18/08 12/08 12/08 N/A 

Pollutant Xontech 910B (Natts) Xontech 920 

(NATTS) 

Xontech 920 

(NATTS) 

PUF (Natts) 

Monitor obj REPRESENTATIVE 

CONCENTRATION 

REPRESENTATIVE 

CONCENTRATION 

REPRESENTATIVE 

CONCENTRATION 

REPRESENTATIVE 

CONCENTRATION 

Spatial scale Neighborhood Scale Neighborhood Scale Neighborhood Scale Neighborhood Scale 

Sampling method Xontech 910A Xontech 920 Xontech 920 Tisch Puf 

Serial # 3634 146 156 007 

Property # 14392 15466 N/A 50493 

Last Calibration Date 01/02/09 02/11/09 02/12/09 02/11/09 

Analysis method Analyzed by 

SCAQMD lab 

Analyzed by 

SCAQMD lab 

Analyzed by 

SCAQMD lab 

Weighed by 

SCAQMD lab 

Start date 01/07 01/07 01/07 11/19/04 

Operation schedule 6 / Year 1:6 6 / Year 1:6 

Sampling season All Year All Year All Year All Year

Probe height 12.6 11.5 11.5 11.3 

Distance from 

supporting structure 

2.3 1.3 1.3 1.1 

Distance from 

obstructions on roof 

N/A N/A N/A N/A 

Distance from 

obstructions not on 

roof 

N/A N/A N/A N/A 

Distance from trees N/A N/A N/A N/A 

Distance to furnace or 

incinerator flue 

N/A N/A N/A N/A 

Distance between 

collocated monitors 

2 2 2 2 

Unrestricted airflow Yes Yes Yes Yes 

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

Residence time 2.6 N/A N/A N/A 

Will there be changes 

within the next 18 

months? 

No No No No 
Air Quality Monitoring Network Plan – July 2009 

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Is it suitable for 

comparison against 

the annual PM2.5? 

N/A N/A N/A N/A 

Frequency of flow 

rate verification for 

manual PM samplers 

audit 

N/A N/A N/A N/A 

Frequency of flow 

rate verification for 

automated PM 

analyzers audit 

N/A N/A N/A N/A 

Frequency of onepoint QC check 

(gaseous) 

N/A N/A N/A N/A 

Last Annual 

Performance 

Evaluation (gaseous) 

N/A N/A N/A N/A 

Last two semi-annual 

flow rate audits for 

PM monitors 

N/A N/A N/A N/A 

Pollutant ARB Toxics ARB Toxics URG 2.5 (EPA STN) 

Monitor obj REPRESENTATIVE 

CONCENTRATION 

REPRESENTATIVE 

CONCENTRATION 

REPRESENTATIVE 

CONCENTRATION 

Spatial scale Neighborhood Scale Neighborhood Scale Neighborhood Scale 

Sampling method RM Environmental 

Systems Inc. 924 

RM Environmental 

Systems Inc. 910PC 

URG 3000N 

Serial # 9241002 6101 3N-B0143 

Property # 20021009 (ARB) 20062214 (ARB) N/A 

Last Calibration Date 04/29/09 N/A 01/20/09 

Analysis method Analyzed by CARB 

lab 

Analyzed by CARB 

lab 

Analyzed by 

SCAQMD lab 

Start date 08/07 08/07 03/07/07 

Operation schedule 1:12 1:12 1:6 

Sampling season All Year All Year All Year 

Probe height 12.18 12.6 12.3 

Distance from 

supporting structure 

1.9 2.3 2.0 

Distance from 

obstructions on roof 

N/A N/A N/A 

Distance from 

obstructions not on 

roof 

N/A N/A N/A 

Distance from trees N/A N/A N/A 

Distance to furnace or 

incinerator flue 

N/A N/A N/A 

Distance between 

collocated monitors 

N/A N/A 2 

Unrestricted airflow Yes Yes Yes 

Probe material Teflon Teflon N/A 

Residence time N/A N/A N/A 
Air Quality Monitoring Network Plan – July 2009 

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Will there be changes 

within the next 18 

months? 

No No No 

Is it suitable for 

comparison against 

the annual PM2.5? 

N/A N/A N/A 

Frequency of flow 

rate verification for 

manual PM samplers 

audit 

N/A N/A Monthly 

Frequency of flow 

rate verification for 

automated PM 

analyzers audit 

N/A N/A N/A 

Frequency of onepoint QC check 

(gaseous) 

N/A N/A N/A 

Last Annual 

Performance 

Evaluation (gaseous) 

N/A N/A N/A 

Last two semi-annual 

flow rate audits for 

PM monitors 

N/A N/A N/A 
Air Quality Monitoring Network Plan – July 2009 

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Los Angeles-North Main Street 

Site Photos 

Looking North from the probe. Looking East from the probe. 

Looking South from the probe. Looking West from the probe. 
Air Quality Monitoring Network Plan – July 2009 

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Los Angeles-North Main Street 

Site Photos (Cont.)

Looking at the probe from the North. Looking at the probe from the East. 

Looking at the probe from the South. Looking at the probe from the West. 
Air Quality Monitoring Network Plan – July 2009 

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Quality Assurance 

Site Survey Report for Riverside-Rubidoux 

Last updated March 2009 

 

AIRS Number ARB Number Site Start Date Reporting Agency and Agency Code

060658001 33144 09/72 South Coast AQMD (061)

Site Address County Air Basin Latitude Longitude Elevation

5888 Mission Blvd 

Riverside, CA 92509 Riverside South Coast 33° 59' 58" 117° 24' 57" 248
Air Quality Monitoring Network Plan – July 2009 

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Air Quality Monitoring Network Plan – July 2009 

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Site Survey Report

 

Siting Information

 Site Name: Riverside-Rubidoux Date: 03/10/09 State Code: 33144 AIRS Number: 060658001 

 Latitude: 33° 59' 58" Longitude: 117° 24' 57" Elevation (m): 248 Address: 5888 Mission Blvd 

 Riverside, CA 92509 Senior AQIS: Keith Brown Site Technician: Lila Enriquez Site Phone: (951) 683-0211 

Operating Agency: South Coast AQMD 

General Siting Conditions

Station Temperature Traffic Topography Predominant Wind Direction: W 

 Controlled: Yes Description: Residential Site: Level Arc Air Flow (Deg): 360 Degrees 

 Recorded: Yes Distance: 25 meters Region: Level Probe Last Cleaned: 04/08 

 Count (Veh/Day): 10000 QA Manual Manifold Clean: Yes 

Meteorology Non-vehicular 

Local Sources Approved: Yes Cleaning Schedule: 6 Months 

 Located With Instruments: Yes Description: None Agency: South Coast AQMD Autocalibrator Type: Environics 9100 

 Distance: N/A Urbanization: Rural Site Survey Complete: Yes 

 Direction: N/A Ground Cover: Gravel Logbook Up To Date: Yes 

Action Items

Comments
Air Quality Monitoring Network Plan – July 2009 

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Detailed Site Information 

Site Name Riverside-Rubidoux 

AQS ID (AIRS #) 060658001 

GIS coordinates Latitude: 33° 59’ 58” Longtitude: 117° 24’ 57” 

Location Vacant Lot 

Address 5888 Mission Blvd, Riverside, CA 92509 

County Riverside 

Dist. to road 25 meters 

Traffic count 10,000 veh/day 

Groundcover Gravel 

PEP audit? 

NPAP audit? 12/08 

Flow audit? 12/08 

Representative Area 40140-Riverside-San Bernardino-Ontario, CA MSA 

Pollutant PM10-SSI PM10-SSI TEOM PM2.5 (Collocated)

(RAAS) 

Monitor obj HIGHEST 

CONCENTRATION 

HIGHEST 

CONCENTRATION 

HIGHEST 

CONCENTRATION 

HIGHEST 

CONCENTRATION 

Spatial scale Neighborhood Scale Neighborhood Scale Neighborhood Scale Neighborhood Scale 

Sampling method SA 1200 SA 1200 R&P 1400 Andersen 300 

Serial # N/A N/A 20013773 00112 

Property # 4941 4992 ARB Unit E000011 

Last Calibration Date 02/03/09 02/03/09 02/10/09 01/06/09 

Analysis method Weighed by 

SCAQMD lab 

Weighed by 

SCAQMD lab 

N/A Weighed by 

SCAQMD lab 

Start date 01/14/97 01/14/97 12/03/04 12/04/98 

Operation schedule 1:3 1:6 1:1 1:6 

Sampling season All Year All Year All Year All Year

Probe height 4.5 4.5 5.0 4.8 

Distance from 

supporting structure 

1.6 1.6 1.6 1.6 

Distance from 

obstructions on roof 

N/A N/A N/A N/A 

Distance from 

obstructions not on 

roof 

N/A N/A N/A N/A 

Distance from trees N/A N/A N/A N/A 

Distance to furnace or 

incinerator flue 

N/A N/A N/A N/A 

Distance between 

collocated monitors 

2.0 2.0 N/A 1.0 

Unrestricted airflow Yes Yes Yes Yes 

Probe material N/A N/A N/A 

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

Will there be changes 

within the next 18 

months? 

Yes Yes Yes Yes 

Is it suitable for 

comparison against 

the annual PM2.5? 

N/A N/A N/A Yes 
Air Quality Monitoring Network Plan – July 2009 

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Frequency of flow 

rate verification for 

manual PM samplers 

audit 

Monthly Monthly N/A Monthly 

Frequency of flow 

rate verification for 

automated PM 

analyzers audit 

N/A N/A Monthly N/A 

Frequency of onepoint QC check 

(gaseous) 

N/A N/A N/A N/A 

Last Annual 

Performance 

Evaluation (gaseous) 

N/A N/A N/A N/A 

Last two semi-annual 

flow rate audits for 

PM monitors 

12/03/08, 05/06/09 12/03/08, 05/06/09 N/A 06/18/08, 12/03/08 

Pollutant PM2.5 Xontech 924 PM2.5 SASS PM2.5 SASS 

Monitor obj HIGHEST 

CONCENTRATION 

REPRESENTATIVE 

CONCENTRATION 

HIGHEST 

CONCENTRATION 

HIGHEST 

CONCENTRATION 

Spatial scale Neighborhood Scale Neighborhood Scale Neighborhood Scale Neighborhood Scale 

Sampling method Andersen 300 RAAS Xontech 924 MetOne SASS MetOne SASS 

Serial # 498 20021474 B3802 A5521 

Property # N/A ARB Unit E000178 

Last Calibration Date 01/06/09 01/04/09 12/31/08 12/09/08 

Analysis method Weighed by 

SCAQMD lab 

Weighed by 

SCAQMD lab 

Weighed by 

SCAQMD lab 

EPA RTP STN 

Start date 01/03/99 01/03/99 10/13/04 10/13/04 

Operation schedule 1:1 1:12 1:3 1:3 

Sampling season All Year All Year All Year All Year

Probe height 4.8 3.5 4.8 4.8 

Distance from 

supporting structure 

1.6 1.6 1.3 1.6 

Distance from 

obstructions on roof 

N/A N/A N/A N/A 

Distance from 

obstructions not on 

roof 

N/A N/A N/A N/A 

Distance from trees N/A N/A N/A N/A 

Distance to furnace or 

incinerator flue 

N/A N/A N/A N/A 

Distance between 

collocated monitors 

2.0 N/A 2.0 2.0 

Unrestricted airflow Yes Yes Yes Yes 

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

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

Will there be changes 

within the next 18 

months? 

Yes Yes Yes Yes 

Is it suitable for 

comparison against 

the annual PM2.5? 

Yes N/A N/A N/A 
Air Quality Monitoring Network Plan – July 2009 

C-22

Frequency of flow 

rate verification for 

manual PM samplers 

audit 

Monthly N/A Monthly Monthly 

Frequency of flow 

rate verification for 

automated PM 

analyzers audit 

N/A N/A N/A N/A 

Frequency of onepoint QC check 

(gaseous) 

N/A N/A N/A N/A 

Last Annual 

Performance 

Evaluation (gaseous) 

N/A N/A N/A N/A 

Last two semi-annual 

flow rate audits for 

PM monitors 

06/18/08, 05/06/09 N/A N/A N/A 

Pollutant PM2.5 XONTECH 920 XONTECH 920 

Monitor obj HIGHEST 

CONCENTRATION 

REPRESENTATIVE 

CONCENTRATION 

REPRESENTATIVE 

CONCENTRATION 

Spatial scale Neighborhood Scale Neighborhood Scale Neighborhood Scale 

Sampling method MetOne SASS XONTECH 920 XONTECH 920 

Serial # A5525 148 149 

Property # 15478 15480 

Last Calibration Date 01/08/09 12/04/08 12/05/08 

Analysis method EPA RTP STN Weighed by 

SCAQMD lab 

Weighed by 

SCAQMD lab 

Start date 10/13/04 11/29/07 04/12/04 

Operation schedule 1:6 1:6 1:every other month 

Sampling season All Year All Year 

Probe height 4.8 4.8 4.8 

Distance from 

supporting structure 

1.6 1.6 1.6 

Distance from 

obstructions on roof 

N/A N/A N/A 

Distance from 

obstructions not on 

roof 

N/A N/A N/A 

Distance from trees N/A N/A N/A 

Distance to furnace or 

incinerator flue 

N/A N/A N/A 

Distance between 

collocated monitors 

2.0 2.0 2.0 

Unrestricted airflow Yes Yes Yes 

Probe material N/A N/A N/A 

Residence time N/A N/A N/A 

Will there be changes 

within the next 18 

months? 

Yes No No 
Air Quality Monitoring Network Plan – July 2009 

C-23

Is it suitable for 

comparison against 

the annual PM2.5? 

N/A N/A N/A 

Frequency of flow 

rate verification for 

manual PM samplers 

audit 

Monthly N/A N/A 

Frequency of flow 

rate verification for 

automated PM 

analyzers audit 

N/A N/A N/A 

Frequency of onepoint QC check 

(gaseous) 

N/A N/A N/A 

Last Annual 

Performance 

Evaluation (gaseous) 

N/A N/A N/A 

Last two semi-annual 

flow rate audits for 

PM monitors 

N/A N/A N/A 
Air Quality Monitoring Network Plan – July 2009 

C-24

Riverside-Rubidoux 

Site Photos 

Looking North from the probe. Looking East from the probe.

Looking South from the probe. Looking West from the probe.
Air Quality Monitoring Network Plan – July 2009 

C-25

Riverside-Rubidoux 

Site Photos (Cont.)

Looking at the probe from the North. Looking at the probe from the East.

Looking at the probe from the South. Looking at the probe from the West.