Effective Control Measures at High Particulate Pollution Areas: Analysis of Data from the 2002 Phoenix Greenwood Study

Annual average PM10 concentrations at the Greenwood monitoring station in western Phoenix have exceeded the Environmental Protection Agency's (EPA's) annual average air quality standard and are higher on average than values observed at the West Phoenix monitor, which is located just 2.2 mi (3.5 km) to the northwest. While the West Phoenix site is in a residential area away from any major thoroughfares, the Greenwood monitor is located just 330 ft (0.10 km) south of I-10 and within a half mile of the heavily traveled I-10/I-17 interchange. Data collected during a field measurement program conducted in the spring of 2000 were analyzed to determine the extent to which the nearby roadways influence PM10 levels at Greenwood. Analyses of the field data showed evidence of stronger on-road mobile source impacts at Greenwood than at other nearby sites, including West Phoenix. Dispersion modeling of mobile source emissions showed that on-road sources contribute 3.6 to 4.2 times as much PM10 at Greenwood as at three nearby sites (West Phoenix, Autoyard, and the Phoenix Supersite). These results were combined with monitoring data, a recent PM2.5 emissions inventory for Phoenix, and results of a receptor modeling study at Supersite to estimate that the average on-road mobile source PM10 impact at Greenwood is approximately 30 microg/cu m, which represents 54% of the total observed PM10. Local traffic sources within roughly a half-mile radius of Greenwood are estimated to account for 66% of the total mobile source impact or approximately 20 microg/cu m or 36% of the total observed PM10.

  • Record URL:
  • Corporate Authors:

    Environ International Corporation

    101 Rowland Way
    Novato, CA  United States  94945

    Arizona Department of Transportation

    206 South 17th Avenue
    Phoenix, AZ  United States  85007

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Stoeckenius, Till E
    • Rao, Sandhya
  • Publication Date: 2005-2


  • English

Media Info

  • Media Type: Print
  • Edition: Final Report
  • Features: Bibliography; Figures; Tables;
  • Pagination: 47p

Subject/Index Terms

Filing Info

  • Accession Number: 01001278
  • Record Type: Publication
  • Report/Paper Numbers: FHWA-AZ-05-496
  • Contract Numbers: ADOT: T00-49-A0014, SPR-PL-1(57)496
  • Created Date: Jun 21 2005 10:44AM