EtO Monitoring Results

Recent Updates

July 22, 2019 Update: Additional air monitoring results received

The Health Department has received additional air monitoring results from samples collected on five separate days from June 14 to June 22, 2019 in Lake County.

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 July 22, 2019

Notes on sample results table:

  1. ND (No detect) = EtO was not detected at a level above the method detection limit of approximately 0.045 μg/m3
  2. Invalid = The test could not be conducted due to a failure of the sampling device
    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
    V12000 Belle Plaine Ave, GurneeJune 14 – 15, 2019NDND
    V33886 Morrison Drive, GurneeJune 14 – 15, 2019NDND
    M1SE corner of N. Palmieri and Staben, WaukeganJune 14 – 15, 20194.312.39
    M3Pulaski Road and S. Shields Drive, WaukeganJune 14 – 15, 2019NDND
    R1O'Plaine Rd & Russell Ave, GurneeJune 15 – 16, 2019NDND
    R27000 Washington Street, GurneeJune 15 – 16, 20190.160.0896
    V12000 Belle Plaine Ave, GurneeJune 15 – 16, 2019NDND
    V2SE corner Northwestern and Keith, GurneeJune 15 – 16, 2019NDND
    V33886 Morrison Drive, GurneeJune 15 – 16, 20191.100.608
    V41200 Estes Drive, GurneeJune 15 – 16, 2019NDND
    M1SE corner of N. Palmieri and Staben, WaukeganJune 15 – 16, 20192.061.14
    M1SE corner of N. Palmieri and Staben, WaukeganJune 15 – 16, 20190.140.077
    M23106 Belvidere Road, WaukeganJune 15 – 16, 2019NDND
    M3Pulaski Road and S. Shields Drive, WaukeganJune 15 – 16, 20191.240.686
    M4FP access west of Green Bay Road, WaukeganJune 15 – 16, 2019InvalidInvalid
    V12000 Belle Plaine Ave, GurneeJune 17 – 18, 2019NDND
    V33886 Morrison Drive, GurneeJune 17 – 18, 2019NDND
    M1SE corner of N. Palmieri and Staben, WaukeganJune 17 – 18, 2019NDND
    M3Pulaski Road and S. Shields Drive, WaukeganJune 17 – 18, 20195.382.98
    M3Pulaski Road and S. Shields Drive, WaukeganJune 17 – 18, 20195.83.2
    R1O'Plaine Rd & Russell Ave, GurneeJune 18 – 19, 2019NDND
    R27000 Washington Street, GurneeJune 18 – 19, 20191.280.708
    V12000 Belle Plaine Ave, GurneeJune 18 – 19, 2019NDND
    V12000 Belle Plaine Ave, GurneeJune 18 – 19, 20190.230.13
    V2SE corner Northwestern and Keith, GurneeJune 18 – 19, 2019NDND
    V33886 Morrison Drive, GurneeJune 18 – 19, 2019NDND
    V41200 Estes Drive, GurneeJune 18 – 19, 2019NDND
    M1SE corner of N. Palmieri and Staben, WaukeganJune 18 – 19, 2019NDND
    M23106 Belvidere Road, WaukeganJune 18 – 19, 20190.240.135
    M3Pulaski Road and S. Shields Drive, WaukeganJune 18 – 19, 20193.161.75
    M4FP access west of Green Bay Road, WaukeganJune 18 – 19, 2019NDND
    R1O'Plaine Rd & Russell Ave, GurneeJune 21 – 22, 20190.50.277
    R27000 Washington Street, GurneeJune 21 – 22, 2019NDND
    V12000 Belle Plaine Ave, GurneeJune 21 – 22, 20190.890.495
    V2SE corner Northwestern and Keith, GurneeJune 21 – 22, 2019NDND
    V33886 Morrison Drive, GurneeJune 21 – 22, 2019NDND
    V41200 Estes Drive, GurneeJune 21 – 22, 2019NDND
    M1SE corner of N. Palmieri and Staben, WaukeganJune 21 – 22, 2019NDND
    M23106 Belvidere Road, WaukeganJune 21 – 22, 2019NDND
    M3Pulaski Road and S. Shields Drive, WaukeganJune 21 – 22, 20195.563.08
    M4FP access west of Green Bay Road, WaukeganJune 21 – 22, 2019NDND
    M4FP access west of Green Bay Road, WaukeganJune 21 – 22, 2019<0.072<0.040

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). 

Note: With the assistance of US EPA and Illinois EPA, we are currently reviewing the wind rose data regarding wind intensity (speed). If it is determined that corrections are required, they will be posted to this site, along with an explanation.

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

Note: In the samples report ERG Jun 14_22 eto, samples from Jun 21 – 22, 2019 indicate a “sampled” date of June 22, 2019. The convention has been to report the date the sampling began as the “sampled” date. A corrected report will be posted soon, indicating the “sampled” date as June 21, 2019.