Appendix F to Part 58

1. General

2. Required Information

2.1 Sulfur Dioxide (SO2)

2.1.1 Site and Monitoring Information

2.1.2 Annual Summary Statistics

2.2 Total Suspended Particulates (TSP)

2.2.1 Site and Monitoring Information

2.2.2 Annual Summary Statistics

2.2.3 Episode and Other Unscheduled Sampling Data

2.3 Carbon Monoxide (CO)

2.3.1 Site and Monitoring Information

2.3.2 Annual Summary Statistics

2.4 Nitrogen Dioxide (NO2)

2.4.1 Site and Monitoring Information

2.4.2 Annual Summary Statistics

2.5 Ozone(O3)

2.5.1 Site and Monitoring Information

2.5.2 Annual Summary Statistics

2.6 Lead (Pb)

2.6.1 Site and Monitoring Information

2.6.2 Annual Summary Statistics

2.7 Particulate Matter (PM10)

2.7.1 Site and Monitoring Information

2.7.2 Annual Summary Statistics

2.7.3 Annual Summary Statistics

2.7.4 Episode and Other Unscheduled Sampling Data

1. General

This appendix describes information to be compiled and submitted annually to EPA for each ambient monitoring station in the SLAMS Network in accordance with § 58.26. The annual summary statistics that are described in section 2 below shall be construed as only the minimum necessary statistics needed by EPA to overview national air quality status. They will be used by EPA to convey information to a variety of interested parties including environmental groups, Federal agencies, the Congress, and private citizens upon request. As the need arises, EPA may issue modifications to these minimum requirements to reflect changes in EPA policy concerning the National Ambient Air Quality Standards (NAAQS).

As indicated in § 58.26(c), the contents of the SLAMS annual report shall be certified by the senior air pollution control officer in the State to be accurate to the best of his knowledge. In addition, the manner in which the data were collected must be certified to have conformed to the applicable quality assurance, air monitoring methodology, and probe siting criteria given in appendices A, C, and E to this part. A certified statement to this effect must be included with the annual report. As required by § 58.26(a), the report must be submitted by July 1 of each year for data collected during the period January 1 to December 31 of the previous year.

EPA recognizes that most air pollution control agencies routinely publish air quality statistical summaries and interpretive reports. EPA encourages State and local agencies to continue publication of such reports and recommends that they be expanded, where appropriate, to include analysis of air quality trends, population exposure, and pollutant distributions. At their discretion, State and local agencies may wish to integrate the SLAMS report into routine agency publications.

2. Required Information

This paragraph describes air quality monitoring information and summary statistics which must be included in the SLAMS annual report. The required information is itemized below by pollutant. Throughout this appendix, the time of occurrence refers to the ending hour. For example, the ending hour of an 8-hour CO average from 12:01 a.m. to 8:00 a.m. would be 8:00 a.m.

For the purposes of range assignments the following rounding convention will be used. The air quality concentration should be rounded to the number of significant digits used in specifying the concentration intervals. The digit to the right of the last significant digit determines the rounding process. If this digit is greater than or equal to 5, the last significant digit is rounded up. The insignificant digits are truncated. For example, 100.5 ug/m3 rounds to 101 ug/m3 and 0.1245 ppm rounds to 0.12 ppm.

2.1 Sulfur Dioxide (SO2)

2.1.1 Site and Monitoring Information. City name (when applicable), county name and street address of site location. AIRS-AQS site code. AIRS-AQS monitoring method code. Number of hourly observations. (1) Number of daily observations. (2)

2.1.2 Annual Summary Statistics. Annual arithmetic mean (ppm). Highest and second highest 24-hour averages (3) (ppm) and dates of occurrence. Highest and second highest 3-hour averages (1, 3) (ppm) and dates and times (1) (ending hour) of occurrence. Number of exceedances of the 24-hour primary NAAQS. (3) Number of exceedances of the 3-hour secondary NAAQS. (3) Number of 24-hour average concentrations (4) in ranges:

RangeNumber of values0.00 to 0.04 (ppm)0.05 to 0.080.09 to 0.120.13 to 0.160.17 to 0.200.21 to 0.240.25 to 0.28Greater than .28

2.2 Total Suspended Particulates (TSP)

2.2.1 Site and Monitoring Information. City name (when applicable), county name and street address of site location. AIRS-AQS site code. Number of daily observations.

2.2.2 Annual Summary Statistics. Annual arithmetic mean (μg/m 3) as specified in appendix K of part 50. Daily TSP values exceeding the level of the 24-hour PM10 NAAQS and dates of occurrence. If more than 10 occurrences, list only the 10 highest daily values. Sampling schedule used such as once every six days, once every three days, etc. Number of additional sampling days beyond sampling schedule used. Number of 24-hour average concentrations in ranges:

RangeNumber of values0 to 50 (μg/m 3)51 to 100101 to 150151 to 200201 to 250251 to 300301 to 400Greater than 400

2.2.3 Episode and Other Unscheduled Sampling Data. List episode measurements, other unscheduled sampling data, and dates of occurrence. List the regularly scheduled sample measurements and date of occurrence that preceded the episode or unscheduled measurement.

2.3 Carbon Monoxide (CO)

2.3.1 Site and Monitoring Information. City name (when applicable), county name and street address of site location. AIRS-AQS site code. AIRS-AQS monitoring method code. Number of hourly observations.

2.3.2 Annual Summary Statistics. Highest and second highest 1-hour values (ppm) and date and time of occurrence. Highest and second highest 8-hour averages (3) (ppm) and date and time of occurrence (ending hour). Number of exceedances of the 1-hour primary NAAQS. Number of exceedances of the 8-hour average primary NAAQS. (3) Number of 8-hour average concentrations (4) in ranges:

RangeNumber of values0 to 4 (ppm)5 to 8 (ppm)9 to 1213 to 1617 to 2021 to 2425 to 28Greater than 28

2.4 Nitrogen Dioxide (NO2)

2.4.1 Site and Monitoring Information. City name (when applicable), county name, and street address of site location. AIRS-AQS site code. AIRS-AQS monitoring method code. Number of hourly observations. (1) Number of daily observations. (2)

2.4.2 Annual Summary Statistics. Annual arithmetic mean (ppm). Highest and second highest hourly averages (3) (ppm) and their dates and time of occurrence. Highest and second highest 24-hour averages (2) and their date of occurrence (ppm). Number of hourly average concentrations in ranges. (1)

RangeNumber of values.0 to .04 (ppm).05 to .08.09 to .12.13 to .16.17 to .20.21 to .24.25 to .28Greater than 0.28

2.5 Ozone (O3)

2.5.1 Site and Monitoring Information. City name (when applicable), county name and street address of site location. AIRS-AQS site code. AIRS-AQS monitoring method code. Number of hourly observations.

2.5.2 Annual Summary Statistics. Four highest daily maximum hour values (ppm) and their dates and time of occurrence. Number of exceedances of the daily maximum 1-hour primary NAAQS. Number of daily maximum hour concentrations in ranges:

RangeNumber of values0 to .04 (ppm).05 to .08.09 to .12.13 to .16.17 to .20.21 to .24.25 to .28Greater than .28

2.6 Lead (Pb).

2.6.1 Site and Monitoring Information. City name (when applicable), county name, and street address of site location, AIRS-AQS site code. AIRS-AQS monitoring method code. Sampling interval of submitted data, e.g., twenty-four hour or quarterly composites.

2.6.2 Annual Summary Statistics. The four quarterly arithmetic averages given to two decimal places for the year together with the number of twenty-four hour samples included in the average, as in the following format:

QuarterNumber of 24-hour samplesQuarterly arithmetic average (μg/m 3)Jan.-MarchApril-JuneJuly-SeptOct.-Dec

2.7 Particulate Matter (PM10)

2.7.1 Site and Monitoring Information. City name (when applicable), county name, and street address of site location. AIRS-AQS site code. Number of daily observations.

2.7.2 Annual Summary Statistics. Annual arithmetic mean (μg/m3) as specified in appendix K of part 50. All daily PM10 values above the level of the 24-hour PM10 NAAQS and dates of occurrence. Sampling schedule used such as once every six days, once every three days, etc. Number of additional sampling days beyond sampling schedule used. Number of 24-hour average concentrations in ranges:

RangeNumber of values0 to 25 (μg/m 3)26 to 5051 to 7576 to 100101 to 125126 to 150151 to 175176 to 200Greater than 200

2.7.3 Annual Summary Statistics. Annual arithmetic mean (μg/m3) as specified in 40 CFR part 50, appendix N. All daily PM-fine values above the level of the 24-hour PM-fine NAAQS and dates of occurrence. Sampling schedule used such as once every 6 days, everyday, etc. Number of 24-hour average concentrations in ranges:

RangeNumber of Values0 to 15 (μg/m3)16 to 3031 to 5051 to 7071 to 9091 to 110Greater than 110

2.7.4 Episode and Other Unscheduled Sampling Data. List episode measurements, other unscheduled sampling data, and dates of occurrence. List the regularly scheduled sample measurements and date of occurrence that preceded the episode or unscheduled measurement.

Footnotes

1. Continuous methods only.

2. Manual or intermittent methods only.

3. Based on nonoverlapping values computed according to procedures described in reference (1) or on individual intermittent measurements.

4. Based on overlapping running averages for continuous measurements as described in reference (1) or on individual measurement for intermittent methods.

Reference

1. “Guidelines for the Interpretation of Air Quality Standards” U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Research Triangle Park, NC 27711. OAQPS No. 1.2-008, February, 1977.