LaPlace, Louisiana - Air Monitoring
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About the monitoring
EPA began monitoring for chloroprene in the neighborhoods near the Denka Performance Elastomers - Pontchartrain Facility (formerly the DuPont Neoprene Facility, Pontchartrain Works) in the Spring of 2016. The purpose of the monitoring is to collect air samples to assist in EPA's assessment of the long-term situation and to gauge the potential risks to the community from chloroprene emissions. EPA is primarily concerned about the potential for long-term risk in the community and will be assessing that risk as more results become available. To keep the community informed during the monitoring period, we are providing individual sample results on this website throughout the monitoring period.
EPA initially collected samples every third day at six monitoring sites in LaPlace. Beginning On March 1, 2019 the sample collection frequency became every sixth day at the six monitoring sites. The sample collection duration is 24 consecutive hours. For quality purposes, EPA collects one additional (collocated) sample at one of the six monitoring sites. The collocated sample location changes, and is selected based on the predicted direction of the winds for the day of sampling. More information can be found in the Air Monitoring Plan.
About the Data
The tables in the monitoring results show the levels of chloroprene in air samples collected at each monitoring location. You can view the air monitoring data summary here.