On Friday May 2, 2008, Lamar Colorado recorded an exceedance of the twenty-four-hour PM10 standard with a concentration of 367 μg/m3 at the Lamar Power Plant. Wind speeds and gust speeds in Lamar exceeded blowing dust criteria, with speeds of 38 to 45 mph and gusts of at 47 to 60 mph for the two-hour period with greatly reduced visibilities during the late morning and early afternoon of May 2.
On Thursday May 22, 2008, Lamar Colorado recorded an exceedance of the twenty-four-hour PM10 standard with a concentration of 227 ug/m3 at the Lamar Power Plant. Sustained winds and gusts in eastern and southeastern Colorado exceeded blowing dust criteria. Winds at Lamar were above the blowing dust thresholds for several hours on May 22, and gusts were as high as 58 mph.
This report discusses results for ambient air toxics monitoring conducted at three locations in Denver during the year May 2002 through April 2003. The air monitoring project discussed in this report did not include monitoring for semi-volatile organic compounds. Thus, potential health effects for inhalation of pesticides or diesel emissions cannot be assessed. These compounds have not been monitored in recent years, except at some specific hazardous waste site clean-ups.
