EtO Monitoring Results

Recent Updates

June 21, 2019 Update: Initial air monitoring results received

The Health Department has received initial air monitoring results from samples collected on three separate days from June 6 to June 10, 2019 in Lake County. This initial data represents only three days of sampling, so conclusions about potential impacts to health cannot yet be made. The Health Department is sharing all results with the Village of Gurnee, City of Waukegan, U.S. Environmental Protection Agency (EPA) and Illinois Environmental Protection Agency (IEPA) as the data becomes available. Updates will be provided to the public on this web page.

Please note that on certain days, not all monitoring locations are sampled. These days were randomly selected during the 30-day period. Samples collected on these days are in addition to the samples collected on the regularly scheduled days. On these random days, four monitoring sites are being sampled.

PRESS RELEASE: Initial Ethylene Oxide Air Monitoring Results Received

Lake County Air Monitoring Results

Updated June 26, 2019

This table represents all results received to date. It will be updated as new results are received.  

Site #LocationSample DatesMeasured Air Concentration
μg/m3ppb
R1O'Plaine Rd & Russell Ave, GurneeJune 6 – 7, 20190.120.068
R27000 Washington Street, GurneeJune 6 – 7, 20190.150.082
V12000 Belle Plaine Ave, GurneeJune 6 – 7, 20190.210.12
V2SE corner Northwestern and Keith, GurneeJune 6 – 7, 20190.140.076
V33886 Morrison Drive, GurneeJune 6 – 7, 20190.270.15
V41200 Estes Drive, GurneeJune 6 – 7, 20190.190.11
M1SE corner of N. Palmieri and Staben, WaukeganJune 6 – 7, 20190.210.11
M23106 Belvidere Road, WaukeganJune 6 – 7, 20190.120.068
M3Pulaski Road and S. Shields Drive, WaukeganJune 6 – 7, 20196.83.8
M4FP access west of Green Bay Road, WaukeganJune 6 – 7, 20190.150.081
V12000 Belle Plaine Ave, GurneeJune 7 – 8, 20190.110.062
V33886 Morrison Drive, GurneeJune 7 – 8, 20190.610.34
M1SE corner of N. Palmieri and Staben, WaukeganJune 7 – 8, 20190.180.1
M3Pulaski Road and S. Shields Drive, WaukeganJune 7 – 8, 2019105.6
R1O'Plaine Rd & Russell Ave, GurneeJune 9 – 10, 20190.130.07
R27000 Washington Street, GurneeJune 9 – 10, 20190.110.062
V12000 Belle Plaine Ave, GurneeJune 9 – 10, 20190.170.093
V2SE corner Northwestern and Keith, GurneeJune 9 – 10, 20190.140.079
V33886 Morrison Drive, GurneeJune 9 – 10, 20190.120.068
V41200 Estes Drive, GurneeJune 9 – 10, 20190.130.07
M1SE corner of N. Palmieri and Staben, WaukeganJune 9 – 10, 20190.210.12
M23106 Belvidere Road, WaukeganJune 9 – 10, 20190.150.081
M3Pulaski Road and S. Shields Drive, WaukeganJune 9 – 10, 20192.41.3
M4FP access west of Green Bay Road, WaukeganJune 9 – 10, 20190.280.16
R1O'Plaine Rd & Russell Ave, GurneeJune 12 – 13, 20190.0950.053
R27000 Washington Street, GurneeJune 12 – 13, 20190.120.065
V12000 Belle Plaine Ave, GurneeJune 12 – 13, 20190.190.11
V2SE corner Northwestern and Keith, GurneeJune 12 – 13, 20190.190.11
V33886 Morrison Drive, GurneeJune 12 – 13, 20190.240.13
V41200 Estes Drive, GurneeJune 12 – 13, 20190.320.18
M1SE corner of N. Palmieri and Staben, WaukeganJune 12 – 13, 20190.600.33
M23106 Belvidere Road, WaukeganJune 12 – 13, 20190.310.17
M3Pulaski Road and S. Shields Drive, WaukeganJune 12 – 13, 20190.430.24
M4FP access west of Green Bay Road, WaukeganJune 12 – 13, 20190.410.23


Lake County Air Monitoring Wind Rose Maps

The maps posted below show the monitoring locations, air monitoring results by day, and a wind rose, which shows the wind information for each sampling day (i.e., wind direction, intensity, and percentage of time wind was blowing from the direction indicated). 

Wind roses are very important in determining the potential impact of a source of pollution. For more information, please see the U.S. EPA’s How to Read a Wind Rose (PDF).

Lake County Air Monitoring Lab Reports