Air Quality Reports

February 4, 2013: Analysis of CDPHE Data Determines Health Risk is Low
The information provided in this report documents research conducted by the Colorado Department of Public Health and Environment (CDPHE) in July and August 2012. Based on the understanding that the CDPHE study is limited in scope and quantity of data, the risk of Erie residents of experiencing an adverse health effect over a lifetime exposure to the CDPHE reported concentrations of the gases discussed in this report is low.

May 8, 2012: Second Analysis of NOAA Data Determines Low Risk of Adverse Health Effects
As part of continued efforts to address the public’s questions and concerns, the Town of Erie engaged in a second Air Quality Assessment of the NOAA data to determine what (if any) health effects would result from exposures to the levels of propane and benzene as presented.

The scientific analysis of the data conducted by Pinyon Environmental, Inc. concluded that the risk of Erie residents experiencing an adverse health effect over a lifetime exposure (70 years) to the reported Benzene and Propane concentrations is low.

During her presentation of the analysis to the Town of Erie Board of Trustees, Cynthia Ellwood, Ph.D., CIH, stated that compared to the levels presented by NOAA, the public would be at a greater exposure risk to Benzene when engaged in activities such as:
  • Eating in a restaurant which permits smoking
  • Fueling a vehicle at a gas station
  • Sitting around a campfire
  • Sitting in an idling car
  • Waiting in a drive-thru lane
View the Air Quality Assessment Report and the Air Quality Assessment Presentation.

April 24, 2012: Analysis of NOAA Data Determines Erie’ s Air Remains Safe
As part of efforts to do everything within its authority to protect resident’s health and safety, the Town of Erie engaged in an independent, peer-reviewed Analysis and Health Impact of Propane Levels of the NOAA data to determine what (if any) health effects would result from exposures to the levels of propane as presented.

The scientific analysis of the data concludes that: “The levels of Propane in the NOAA study are 1,000 fold or more below those considered to be of a health concern.” The average level of Propane as presented by NOAA was 20 parts per billion (ppb) and the maximum level was 115 ppb. According to the analysis: “Propane at 115 ppb (the peak level found) does not present a health concern to the citizens of the Town of Erie.”

View the Scientific Analysis and Health Impact of Propane Report and the Scientific Analysis and Health Impact of Propane Summary.

NOAA Summary of Findings
NOAA has posted a Summary of Findings for their Winter Air Quality Study conducted from the Boulder Atmospheric Observatory near Erie. The findings were presented by Dr. Steve Brown during the February 21, 2012 Board of Trustees meeting.

According to the NOAA summary: "The Boulder Atmospheric Observatory (BAO) tower provides a convenient site for making measurements of air quality. Although the tower is located near Erie, Colorado, measurements of elevated pollutant levels at the BAO do not imply that those levels are confined to the area or that the pollutants come from sources only in the immediate area. Tower data typically provide information representative of the broader Front Range region."

"Please note that analysis of the data from this study is in progress. When a peer-reviewed paper is published, we will make it available to the public."

View the NOAA Summary of Findings.