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    ACRONYMS

    AIRS Aerometric Information Retrieval System API Advanced Pollution Instrumentation AQDAS II Air Quality Data Acquisition System version II AQSB Air Quality and Surveillance Branch ARB Air Resources Board

    BAM Beta Attenuation Monitor

    CFR Code of Federal Regulations

    ECD Electron Capture Detector

    EHC Environmental Health Coalition

    EMC Environmental Management Corporation GC Gas Chromatograph

    HPLC High Performance Liquid Chromatograph IC Ion Chromatograph

    LIMS Laboratory Information Management System MLD Monitoring and Laboratory Division OEHHA Office of Environmental Health Hazard Assessment

    PID Photo-ionization Detector

    PM Particulate matter with an aerodynamic diameter less than 2.5 ;m 2.5

    PM Particulate matter with an aerodynamic diameter less than 10 ;m 10

    QA Quality Assurance

    QC Quality Control

    QMOS Quality Management and Operations Support SDAPCD San Diego Air Pollution Control District SPM Special Purpose Monitoring

    SSI Size Selective Inlet

    TAC Toxic Air Contaminant

    TECO Thermo Environmental Corporation UV Ultra Violet

    I. Objective

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    The objective of this monitoring project is to produce data which could be used to determine the potential for human health impacts from concentrations of toxic air contaminants (TACs) in the Barrio Logan community of San Diego. The project will assess differences, if any, in concentrations of TACs at three locations in the San Diego area Barrio Logan and two long-

    term TAC monitoring stations operated in Chula Vista and El Cajon. Samples will be collected thevery fourth day at the Barrio Logan site and every 12 day at the Chula Vista and El Cajon sites

    from 21 October 1999 to 31 March 2000. This period was chosen because higher concentrations of TACs are typically seen in the winter months. Differences will be assessed principally by comparing average winter concentrations at the Barrio Logan site to winter averages for the previous two or three years at the Chula Vista and El Cajon sites.

    There will be up to fourteen (14) days during this project when sampling days at Barrio Logan, Chula Vista and El Cajon coincide. These data pairs will also be compared to look for concentration differences between sites. Because there will be so few pairs of data to directly compare, we expect substantial uncertainty with respect to the conclusions that we might draw by comparing data pairs.

    The decision to conduct this study was a result of discussions between the Environmental Health Coalition (EHC) and the San Diego County Air Pollution Control District (SDAPCD). The EHC had requested that the SDAPCD conduct such monitoring, however the District did not have resources available. The Air Resources Board (ARB) agreed to support the effort with samplers and analytical laboratory analyses.

II. Background

    California’s TAC identification and control program requires the ARB to determine the extent of public exposure to candidate TAC and, in cooperation with the Office of Environmental Health Hazard Assessment (OEHHA), to describe the nature and magnitude of the human health risk to that exposure. Upon consideration of the public health risks and exposure, the ARB may formally identify a substance as a TAC. After the formal identification phase, ARB may then determine the need and appropriate degree of regulation and control for that substance. Standards are not issued for compounds identified as TAC. Instead, controls are required for the sources of the emissions.

    In 1984, the ARB initiated a state-wide ambient toxics monitoring network to provide the data required to measure average ambient concentration of TACs. Since that time, the ARB and local air pollution districts have operated a twenty station monitoring network collecting samples thevery 12 day.

     11/02/99 Page 3 of 11

    III. Description of ARB’s Mobile Air Monitoring Trailer (Rover)

     The ARB’s Mobile Air Monitoring

    Program has been developed to provide

    ambient air monitoring support for the ARB.

    The Rover is a full air monitoring station

    capable of monitoring and collecting air

    samples for ozone, oxides of nitrogen,

    carbon monoxide, PM, PMwind speed, 102.5,

    wind direction, ambient temperature,

    halogens, aromatics, 1,3-butadiene,

    oxygenates, aldehydes, hexavalent chromium,

    total metals and additional analysis as

    required.

The Rover consists of a 16’ by 7’ Wells Cargo trailer and is towed by a 1990 GMC

    Surburban. The trailer is equipped with a 7’ by 10’ roof mounted platform to allow for rooftop

    mounted samplers.

    IV. Study Participants and Contacts

ARB Monitoring and Laboratory Division

    Chief, Monitoring and Laboratory Division

    Bill Loscutoff, (916) 445-3742

    Chief Chemist, Monitoring and Laboratory Division

    Mike Poore, (916) 322-6043

     ARB Air Quality Surveillance Branch

    Chief, Air Quality Surveillance Branch

    Bill Oslund, (916) 445-3745

    Manager, Special Purpose Monitoring and Data Support Section

    Ken Stroud, (916) 324-7591

    Air Pollution Specialist, Special Purpose Monitoring and Data Support Section

    Reggie Smith, (916) 327-1238

    ARB Quality Management and Operations Support Branch

     Chief, Quality Management and Operations Support Branch

     Jeff Cook, (916) 322-3726

     Manager, Quality Assurance Section

     Mike Miguel, (916) 324-6191

ARB Engineering and Laboratory Branch

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     Manager, Inorganics Laboratory Section

     Russell Grace, (916) 322-0223

     Manager, Organics Laboratory Section

     Hieu Le, (916) 322-6042

    San Diego County Air Pollution Control District

    Chief, Monitoring and Technical Services

    Judy Lake, (858) 694-2730

    Manager, Ambient Monitoring Section

    Mahmood Hossain, (619) 694-3358

    Manager, Meteorology Section

    Bill Brick, (858) 694-3496

    Don White, (858) 694-3357

    Dick Smith, (619) 694-3303

    San Diego Unified School District.

    Director, Facilities Development Department

    Thomas Calhoun, (619) 293-8327

     Environmental, Occupational and Safety Technician

     John Baker, (619) 627-7350

     Environmental Technician, Facilities Development Department

     Tony Raso, (619) 293-8280

    Environmental Health Coalition

     Co-Director, Toxics Free Neighborhood Campaign

     Paula Forbis, (619) 235-0281

     U.S. Environmental Protection Agency

     Clarice Gaylord, (619) 235-4767

    American Lung Association

     Jan Cortez, (619) 297-3901

     U.S. Navy Region SW

     Martha Gandy, (619) 524-6091

     Solar Turbine

     Craig Anderson, (619) 554-5126

     IEA

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     Patti Krebs, (619) 554-9684

     USC School of Medicine

     Ed Avol, (323) 442-1090

     CMSD

     Harvey Porter, (619) 234-8851

V. Roles and Responsibilities

    Mr. Bill Oslund is the chief of the Air Quality and Surveillance Branch (AQSB).

    In this role, Mr. Oslund will have the responsibility for ensuring that the overall technical

    and operational goals of this project are met. The AQSB will:

     Perform installation/de-installation of mobile air monitoring station

     Operate criteria pollutant monitoring equipment

     Perform pre and post calibration of sampling equipment

     Perform monthly data review/submittal to AIRS for criteria and meteorological

    data

     Prepare study protocol

     Prepare final report

    Mr. Cook is the chief of the Quality Management and Operations Support Branch

    (QMOS). In this role, Mr. Cook will have the responsibility for ensuring a performance

    audit is conducted at least once during the study period. QMOS will:

     Conduct one performance audit on all sampling equipment

    Mr. Poore is the chief chemist of the Monitoring and Laboratory Division. In this

    role, Mr. Poore will ensure the ARB laboratory accomplishes the following:

     Provide adequate supply of sampling media

     Perform sample analysis

     Perform data review/submittal to AIRS for toxics data

    Ms. Lake is the Chief, Monitoring and Technical Services of the San Diego

    County Air Pollution Control District. In this role, Ms. Lake will oversee operation and

    collection of toxic air sampling. The SDAPCD will:

     Operate toxics air samplers

     Coordinate with ARB to ensure adequate supply of sample media

     Collect and forward sampled media to ARB laboratory

     Complete records for each sample taken at the site (24-hour sample reports)

     Complete sampler maintenance documentation (monthly QC sheets)

     11/02/99 Page 6 of 11

VI. Location

     The site selected for this study is on the grounds of the Logan Memorial Junior High thSchool, located on 28 Street and Logan

    Avenue in San Diego, California. The junior

    high school was one of twelve candidate

    sites in the project area. The site was

    selected through a cooperative effort

    between the SDAPCD, the EHC, the ARB

    and the San Diego Unified School District.

    The site was selected because of its

    downwind location from potential emission

    sources including the I-5 freeway. The site

    will be designated as a Special Purpose

    Monitoring (SPM) station for all sampling

    parameters and will be classified as

    neighborhood scale.

     Barrio Logan Monitoring Site

VII. Study Period and Sampling Schedule

    The study will commence on 21 October 1999 and continue through 31 September 2000. During the period from 21 October 1999 to 31 March 2000, toxic compounds will be sampled on a 1-in-4 day sampling schedule from midnight to midnight. This 1-in-4 schedule will coincide with ARB’s normal 1-in-12 day toxic sampling schedule. From 1 April 2000 to 31 September 2000, only hexavalent chromium and aldehydes will be collected on the ARB 1-in-12 day toxic

    sampling schedule. Criteria pollutant and meteorological monitoring will be collected continuously during the study.

VIII. Data Handling

Criteria Pollutant and Meteorological Parameters

     Criteria pollutant and meteorological air quality data will be collected using an Environmental Management Corporation (EMC) Station Manager Data Logger. EMC data loggers are used to collect, process and report air quality data for the ARB’s statewide air monitoring network. The EMC data logger converts the analog outputs of various analyzers (ozone, carbon monoxide etc.) into digital minute and hour averages. These averages are polled over telephone lines via an Air Quality Data Acquisition System version II (AQDASII) communication server and stored in a SQL data base on an AQDAS-II file server.

     Once air quality data are collected by AQDAS-II, all data are screened using a three level review process. Within 60 days from the end of the month, the air quality data will be submitted to the United States Environmental Protection Agency (U.S. EPA’s) Aerometric Information Retrieval System (AIRS).

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Toxics and Filter-based Sampling

     Toxics and filter-based sampling media will be prepared and inspected by ARB laboratory personnel prior to being shipped to the field. All sampling media will be accompanied with a field sampling data sheet. This data sheet serves as a document to record sampling and chain-of-custody information for each sample collected at the site.

     After sampling, the toxics and filter-based media will be returned to the ARB laboratory. Once the laboratory receives samples, the field information will be keyed into the Laboratory Information Management System (LIMS). LIMS serves as the tracking and storage system for all toxics and filter-based sampled data. The samples will be then sent to their respective laboratories for analysis. Once analysis is complete, toxics data will be entered into LIMS.

     11/02/99 Page 8 of 11

    IX. Sampling Protocol

Criteria Pollutants:

    Parameter Analyzer Sample Method Frequency Reporting Interval Ozone API 400 UV Photometry Continuous Hourly Average Nitrogen Dioxide TECO 42 Gas Phase Chemiluminescence Continuous Hourly Average Carbon Monoxide Dasibi 3008 Non-dispersive Infared Photometry Continuous Hourly Average

     Andersen Hi-Vol/SSI Gravimetric Analysis Continuous Hourly Average PM10

    PM Met-One BAM Beta Attenuation Continuous Hourly Average 2.5

Meteorological Parameters:

    Parameter Analyzer Sample Method Frequency Reporting Interval Resultant Wind Speed Met-One 010 Vector Summation Continuous Hourly Average Resultant Wind Direction Met-One 020 Vector Summation Continuous Hourly Average Ambient Temperature Met-One 060 Thermistor Continuous Hourly Average

Total Metal and Carbonyl Toxic Compounds:

    Parameter Sampler Analysis Method Frequency Reporting Interval Hexavalent Chromium Xontech 920 IC UV-Visible 1 every 4 days 24-Hour Average Total Metals* Xontech 920 X-Ray Fluorenscence 1 every 4 days 24-Hour Average Formaldehyde Xontech 920 Silica-DNPH Cartridge w/ HPLC -UV 1 every 4 days 24-Hour Average Acetaldehyde Xontech 920 Silica-DNPH Cartridge w/ HPLC -UV 1 every 4 days 24-Hour Average Methyl Ethyl Ketone Xontech 920 Silica-DNPH Cartridge w/ HPLC -UV 1 every 4 days 24-Hour Average

     * See TABLE E for list of analyzed Toxic Compounds

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    IX. Sampling Protocol (Continued)

Halogens, Aromatics, Butadiene and Oxygenate Toxic Compounds:

    Parameter Sampler Analysis Method Frequency Reporting Interval Benzene Xontech 910 GC-PID 1 every 4 days 24-Hour Average Toluene Xontech 910 GC-PID 1 every 4 days 24-Hour Average Ethyl-Benzene Xontech 910 GC-PID 1 every 4 days 24-Hour Average 1,3-Xylene/1,4-Xylene Xontech 910 GC-PID 1 every 4 days 24-Hour Average Styrene Xontech 910 GC-PID 1 every 4 days 24-Hour Average 1,2-Xylene Xontech 910 GC-PID 1 every 4 days 24-Hour Average 1,4 Dichlorobenzene Xontech 910 GC-PID 1 every 4 days 24-Hour Average 1,2 Dichlorobenzene Xontech 910 GC-PID 1 every 4 days 24-Hour Average 1,3-Butadiene Xontech 910 GC-PID 1 every 4 days 24-Hour Average Dichloromethane (DCM) Xontech 910 GC-ECD 1 every 4 days 24-Hour Average Cloroform Xontech 910 GC-ECD 1 every 4 days 24-Hour Average Trichloroethane Xontech 910 GC-ECD 1 every 4 days 24-Hour Average Carbon Tetrachloride Xontech 910 GC-ECD 1 every 4 days 24-Hour Average Trichloroethylene (TCE) Xontech 910 GC-ECD 1 every 4 days 24-Hour Average Tetrachloroethyene (Perc) Xontech 910 GC-ECD 1 every 4 days 24-Hour Average MTBE Xontech 910 GC-PID 1 every 4 days 24-Hour Average

     PAH Toxic Compounds:

    Parameter Sampler Analysis Method Frequency Reporting Interval

    1 every 4 days 24-Hour Average Benzo(b)Fluorantene Andersen Hi-Vol/SSI HPLC Scanning Fluorescence

    1 every 4 days 24-Hour Average Benzo(k)Fluorantene Andersen Hi-Vol/SSI HPLC Scanning Fluorescence

    1 every 4 days 24-Hour Average Benzo(A)Pyrene Andersen Hi-Vol/SSI HPLC Scanning Fluorescence

    1 every 4 days 24-Hour Average Dibenz(a,h)Anthracene Andersen Hi-Vol/SSI HPLC Scanning Fluorescence

    1 every 4 days 24-Hour Average Benzo(ghi)Perylene Andersen Hi-Vol/SSI HPLC Scanning Fluorescence

    1 every 4 days 24-Hour Average Indeno(1,2,3-cd)Pyrene Andersen Hi-Vol/SSI HPLC Scanning Fluorescence

     11/02/99 Page 10 of 11

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