MEASUREMENT AND ANALYSIS OF AMBIENT CARBON MONOXIDE CONCENTRATIONS FOR PROJECT-LEVEL AIR QUALITY IMPACT STUDIES

Recommended procedures are given for designing project-level ambient carbon monoxide (CO) monitoring studies and analyzing their results. Attention is focused on transportation related applications, although the procedures are general and can be applied to other types of air quality studies. A statistical model which uses the scheduling and duration of sampling as a means to minimize bias in estimating the second annual maximum CO concentration is developed. This model is verified using a data set comprised of 112 station-years of data collected at 12 California air monitoring stations. The temporal distributions of seasonal maximums for this data set are also described. Two types of sampling plans are discussed: Background sampling and corridor sampling. Specific criteria for choosing between these two plans are given. Recommendations are made regarding site selection, outlier analysis, rollback calculations and data handling. A computer program which estimates second annual maximum 1-hour and 8-hour ambient CO concentrations using observed maximums stratified by time of day periods is introduced. A complete set of user instructions for this program is given. (Author)

• Corporate Authors:

  California Department of Transportation

  Transportation Laboratory
  5900 Folsom Boulevard
  Sacramento, CA  United States  95819

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Benson, P E
• Publication Date: 1984-2

Media Info

• Features: Appendices; Figures; Tables;
• Pagination: 130 p.

Subject/Index Terms

• TRT Terms: Air pollution; Carbon monoxide; Chemical concentration; Impact studies; Mathematical models; Measurement; Monitoring; Sampling; Statistical analysis
• Uncontrolled Terms: Concentration
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; Vehicles and Equipment; I96: Vehicle Operating Costs;

Filing Info

• Accession Number: 00387061
• Record Type: Publication
• Report/Paper Numbers: FHWA-CA-TL-84-01 Final Rpt., 57328-604195
• Contract Numbers: E80TL13
• Files: TRIS, ATRI, USDOT, STATEDOT
• Created Date: Aug 30 1984 12:00AM