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Air Quality Monitoring Data

Hurricane Delta made landfall around 6:00 p.m. on the evening of October 9, 2020 near the Texas state line in Creole, Louisiana as a Category 2 hurricane.

Important information Monitor Station Updates

Hurricane Delta made landfall around 6:00 p.m. on the evening of October 9, 2020 near the Texas state line in Creole, Louisiana as a Category 2 hurricane. TCEQ initiated handheld monitoring surveys in the impacted areas of East Texas on October 10, 2020. MultiRAEs, QRAEs, AreaRAEs, MiniRAEs, UltraRAEs, VRAEs, and Toxic Vapor Analyzers with various sensors are among the instruments that may be used for survey activities. These instruments provide instantaneous readings for various compounds that may include the lower explosive limit (LEL), volatile organic compounds (VOC), hydrogen sulfide (H2S), carbon monoxide (CO), benzene, 1,3 butadiene, hydrogen cyanide (HCN), and oxygen.

Sample results from TCEQ’s handheld monitoring equipment are listed below, including observations of odor. Some normal levels, also known as background levels, of VOCs may be noted to be below 3 ppm. Data is updated as information becomes available.

Important information TCEQ Handheld Air Monitoring Data

A summary of preliminary sample results from the TCEQ’s monitoring van are listed below. Monitoring efforts continue and additional results will be updated as available. Instantaneous sample results are labeled as "survey", and results from prolonged sampling are labeled "stationary", with the time of measurement provided. Please note that these preliminary data have not been verified by the TCEQ and may change. The data are not official until validated by technical staff.

Important information TCEQ Air Monitoring Van Data