Bridgeton Landfill Air Monitoring

May 2013

DHSS review of air monitoring data from the Bridgeton Landfill area

May 31.2013

The Department of Health and Senior Services (DHSS) has reviewed air quality screening data collected by the Department of Natural Resources (DNR) at Bridgeton Landfill from the afternoon of May 30 to the afternoon of May 31, 2013. On April 23, DNR began routine, twice daily, surveillance of hydrogen sulfide, benzene, and odor levels around the entire periphery of the landfill. In addition, DNR has provided continuous monitoring of reduced sulfur compounds (reported as hydrogen sulfide), sulfur dioxide, carbon monoxide, and total volatile organic compounds (VOCs) at three fixed locations. On May 30, until mid-afternoon, monitors located east of the landfill were temporarily moved north of the landfill to be in a downwind location for sampling. At approximately 3:30 pm, those monitors were returned to their usual location east of the landfill. DHSS has reviewed both sets of data to identify potential public health concerns for short-term health effects. Generally, samples are collected near the property boundary and dispersion is expected to reduce exposure downwind of the sample locations.

Odors

Odors were reported by DNR as being mild today in several locations around the landfill. Winds were slow and shifting, although predominantly from the south.

Hydrogen Sulfide and Other Reduced Sulfur Compounds

Hydrogen sulfide concentrations were below levels of public health concern.

Sulfur Dioxide

Average sulfur dioxide concentrations did not exceed levels of public health concern, except for a limited time period at two monitoring locations near the landfill.

Benzene and Total VOCs

Benzene was not detected in ambient air at any of the surveillance locations around the landfill.

Carbon Monoxide

Average carbon monoxide concentrations were well below levels of public health concern.

Radiation Rates

Gamma radiation rates continue to be at levels that are at or near natural background levels.

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May 29-30, 2013 Comprehensive Air Sampling

The Missouri Department of Health and Senior Services (DHSS) has reviewed the air sample data from the May 29-30 comprehensive sampling event at Bridgeton Landfill. DHSS evaluated air samples collected from two on-site locations and from two locations upwind and two locations downwind from the site. DHSS reviewed the data for evaluation of potential public health concerns of short-term health effects.

Samples were collected for aldehydes, amines, ammonia, carboxylic acids, hydrogen chloride, hydrogen cyanide, mercury (elemental), sulfur dioxide, dioxins/furans, polynuclear aromatic hydrocarbons (PAHs), volatile organic compounds (VOCs), and reduced sulfur compounds. Of these, only aldehydes, carboxylic acids, dioxins/furans, PAHs, and VOCs were detected in the samples.

Aldehydes

Aldehydes were detected on-site, upwind, and downwind of the landfill; however, all concentrations were below levels of public health concern.

Carboxylic Acids

Carboxylic acids were detected in one on-site sample; however, concentrations were below levels of public health concern and were not detected in ambient air downwind of the landfill.

Dioxins/Furans

Dioxins and furans were detected on-site, upwind, and downwind of the landfill; however, all concentrations were below levels of public health concern.

PAHs

PAHs were detected on-site, upwind, and downwind of the landfill; however, the concentrations were low and are not expected to pose a public health risk.

VOCs

VOCs were detected on-site, upwind, and downwind of the landfill; however, all concentrations of VOCs were below levels of public health concern.

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May 30.2013

The Department of Health and Senior Services (DHSS) has reviewed air quality screening data collected by the Department of Natural Resources (DNR) at Bridgeton Landfill from the afternoon of May 29 to the afternoon of May 30, 2013. On April 23, DNR began routine, twice daily, surveillance of hydrogen sulfide, benzene, and odor levels around the entire periphery of the landfill. In addition, DNR has provided continuous monitoring of reduced sulfur compounds (reported as hydrogen sulfide), sulfur dioxide, carbon monoxide, and total volatile organic compounds (VOCs) at three fixed locations. The monitors usually located east of the landfill were moved north of the landfill to be in a downwind location for sampling on May 30. DHSS has reviewed both sets of data to identify potential public health concerns for short-term health effects. Generally, samples are collected near the property boundary and dispersion is expected to reduce exposure downwind of the sample locations.

Odors

Odors were reported by DNR as being moderate to strong today in locations north of the landfill. Winds were predominantly from the south.

Hydrogen Sulfide and Other Reduced Sulfur Compounds

Hydrogen sulfide concentrations were below levels of public health concern.

Sulfur Dioxide

Average sulfur dioxide concentrations did not exceed levels of public health concern, except for a limited time period at two monitoring locations near the landfill.

Benzene and Total VOCs

Benzene was not detected in ambient air at any of the surveillance locations around the landfill.

Carbon Monoxide

Average carbon monoxide concentrations were well below levels of public health concern.

Radiation Rates

Gamma radiation rates continue to be at levels that are at or near natural background levels.

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May 29. 2013

The Department of Health and Senior Services (DHSS) has reviewed air quality screening data collected by the Department of Natural Resources (DNR) at Bridgeton Landfill on May 28-29, 2013. On April 23, DNR began routine, twice daily, surveillance of hydrogen sulfide, benzene, and odor levels around the entire periphery of the landfill. In addition, DNR has provided continuous monitoring of reduced sulfur compounds (reported as hydrogen sulfide), sulfur dioxide, carbon monoxide, and total volatile organic compounds (VOCs) at three fixed locations. DHSS has reviewed both sets of data to identify potential public health concerns for short-term health effects.

Odors

Odors were reported by DNR as being moderate to occasionally strong at locations to the north and northeast. Winds were predominantly from the south and southwest.

Hydrogen Sulfide and Other Reduced Sulfur Compounds

Hydrogen sulfide concentrations were below levels of public health concern.

Sulfur Dioxide

Average sulfur dioxide concentrations did not exceed levels of public health concern, except for a limited time period at two monitoring locations near the landfill.

Benzene and Total VOCs

Benzene was not detected in ambient air at any of the surveillance locations around the landfill.

Carbon Monoxide

Average carbon monoxide concentrations were well below levels of public health concern.

Radiation Rates

Gamma Radiation rates continue to be at levels that are at or near natural background levels.

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May 28.2013

The Department of Health and Senior Services (DHSS) has reviewed air quality screening data collected by the Department of Natural Resources (DNR) at Bridgeton Landfill on May 27-28, 2013. On April 23, DNR began routine, twice daily, surveillance of hydrogen sulfide, benzene, and odor levels around the entire periphery of the landfill. In addition, DNR has provided continuous monitoring of reduced sulfur compounds (reported as hydrogen sulfide), sulfur dioxide, carbon monoxide, and total volatile organic compounds (VOCs) at three fixed locations. DHSS has reviewed both sets of data to identify potential public health concerns for short-term health effects.

Odors

Odors were reported by DNR as being moderate today in locations north of the landfill. Winds were predominantly from the south.

Hydrogen Sulfide and Other Reduced Sulfur Compounds

Hydrogen sulfide concentrations were below levels of public health concern.

Sulfur Dioxide

Average sulfur dioxide concentrations did not exceed levels of public health concern, except for a limited time period at two monitoring locations near the landfill.

Benzene and Total VOCs

Benzene was not detected in ambient air at any of the surveillance locations around the landfill.

Carbon Monoxide

Average carbon monoxide concentrations were well below levels of public health concern.

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May 26 - 27. 2013

The Department of Health and Senior Services (DHSS) has reviewed air quality screening data collected by the Department of Natural Resources (DNR) at Bridgeton Landfill on Sunday, May 26, and Monday, May 27, while construction work at the landfill was temporarily suspended due to adverse weather conditions. On April 23, DNR began routine, twice daily, surveillance of hydrogen sulfide, benzene, and odor levels around the entire periphery of the landfill. In addition, DNR has provided continuous monitoring of reduced sulfur compounds (reported as hydrogen sulfide), sulfur dioxide, carbon monoxide, and total volatile organic compounds (VOCs) at three fixed locations. DHSS has reviewed both sets of data to identify potential public health concerns for short-term health effects.

Odors

Odors were generally mild until Monday, May 27, when DNR reported odors as being strong east-northeast of the landfill and in pockets south of the landfill. Winds were predominantly from the south.

Hydrogen Sulfide and Other Reduced Sulfur Compounds

Hydrogen sulfide concentrations were below levels of public health concern.

Sulfur Dioxide

Average sulfur dioxide concentrations did not exceed levels of public health concern, except for limited time periods at two monitoring locations near the landfill.

Benzene and Total VOCs

Benzene was not detected in ambient air, except for a limited time period at one surveillance location near the landfill.

Carbon Monoxide

Average carbon monoxide concentrations were well below levels of public health concern.

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May 25. 2013

The Department of Health and Senior Services (DHSS) has reviewed air quality screening data collected by the Department of Natural Resources (DNR) at Bridgeton Landfill on May 24-25, 2013. On April 23, DNR began routine, twice daily, surveillance of hydrogen sulfide, benzene, and odor levels around the entire periphery of the landfill. In addition, DNR has provided continuous monitoring of reduced sulfur compounds (reported as hydrogen sulfide), sulfur dioxide, carbon monoxide, and total volatile organic compounds (VOCs) at three fixed locations. DHSS has reviewed both sets of data to identify potential public health concerns for short-term health effects.

Odors

Odors were reported by DNR as being generally mild today, particularly north of the landfill. Winds were predominantly from the south.

Hydrogen Sulfide and Other Reduced Sulfur Compounds

Hydrogen sulfide concentrations were well below levels of public health concern.

Sulfur Dioxide

Average sulfur dioxide concentrations did not exceed levels of public health concern, except for a limited time period at one monitoring location near the landfill.

Benzene and Total VOCs

Benzene was not detected in ambient air at any of the surveillance locations around the landfill.

Carbon Monoxide

Average carbon monoxide concentrations were well below levels of public health concern.

Radiation Rates

Gamma radiation rates continue to be at levels that are at or near natural background levels.

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May 24. 2013

The Department of Health and Senior Services (DHSS) has reviewed air quality screening data collected by the Department of Natural Resources (DNR) at Bridgeton Landfill on May 23-24, 2013. On April 23, DNR began routine, twice daily, surveillance of hydrogen sulfide, benzene, and odor levels around the entire periphery of the landfill. In addition, DNR has provided continuous monitoring of reduced sulfur compounds (reported as hydrogen sulfide), sulfur dioxide, carbon monoxide, and total volatile organic compounds (VOCs) at three fixed locations. DHSS has reviewed both sets of data to identify potential public health concerns for short-term health effects.

Odors

Odors were reported by DNR as being strong today at least a half mile west-southwest of the landfill. Winds were predominantly from the east-northeast.

Hydrogen Sulfide and Other Reduced Sulfur Compounds

Hydrogen sulfide concentrations were well below levels of public health concern.

Sulfur Dioxide

Average sulfur dioxide concentrations did not exceed levels of public health concern.

Benzene and Total VOCs
Benzene was not detected in ambient air at any of the surveillance locations around the landfill.
Carbon Monoxide

Average carbon monoxide concentrations were well below levels of public health concern.

Radiation Rates

Gamma radiation rates continue to be at levels that are at or near natural background levels.

Gamma radiation levels are monitored continuously at three locations around the site using AreaRae instruments equipped with radiation detectors.

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May 23. 2013

The Department of Health and Senior Services (DHSS) has reviewed air quality screening data collected by the Department of Natural Resources (DNR) at Bridgeton Landfill on May 22-23, 2013. On April 23, DNR began routine, twice daily, surveillance of hydrogen sulfide, benzene, and odor levels around the entire periphery of the landfill. In addition, DNR has provided continuous monitoring of reduced sulfur compounds (reported as hydrogen sulfide), sulfur dioxide, carbon monoxide, and total volatile organic compounds (VOCs) at three fixed locations. DHSS has reviewed both sets of data to identify potential public health concerns for short-term health effects.

Odors

Odors were reported by DNR as being strong today at least one mile east and southeast of the landfill. Winds were predominantly from the west and northwest.

Hydrogen Sulfide and Other Reduced Sulfur Compounds

Hydrogen sulfide concentrations were well below levels of public health concern.

Sulfur Dioxide

Average sulfur dioxide concentrations did not exceed levels of public health concern.

Benzene and Total VOCs

Benzene was not detected in ambient air at any of the surveillance locations around the landfill.

Carbon Monoxide

Average carbon monoxide concentrations were well below levels of public health concern.

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May 22. 2013

The Department of Health and Senior Services (DHSS) has reviewed air quality screening data collected by the Department of Natural Resources (DNR) at Bridgeton Landfill on May 21-22, 2013. On April 23, DNR began routine, twice daily, surveillance of hydrogen sulfide, benzene, and odor levels around the entire periphery of the landfill. In addition, DNR has provided continuous monitoring of reduced sulfur compounds (reported as hydrogen sulfide), sulfur dioxide, carbon monoxide, and total volatile organic compounds (VOCs) at three fixed locations. DHSS has reviewed both sets of data to identify potential public health concerns for short-term health effects,

Odors

Odors were reported by DNR as being moderate to strong today at locations east of the landfill.

Hydrogen Sulfide and Other Reduced Sulfur Compounds

Hydrogen sulfide concentrations were well below levels of public health concern.

Sulfur Dioxide

Average sulfur dioxide concentrations did not exceed levels of public health concern.

Benzene and Total VOC

Benzene was not detected in ambient air at any of the surveillance locations around the landfill.

Carbon Monoxide

Average carbon monoxide concentrations were well below levels of public health concern.

Radiation Rates

Gamma radiation rates continue to be at levels that are at or near natural background levels.

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May 21, 2013

The Department of Health and Senior Services (DHSS) has reviewed air quality screening data collected by the Department of Natural Resources (DNR) at Bridgeton Landfill on May 21, 2013. On April 23, DNR began routine, twice daily, surveillance of hydrogen sulfide, benzene, and odor levels around the entire periphery of the landfill. In addition, DNR has provided continuous monitoring of reduced sulfur compounds (reported as hydrogen sulfide), sulfur dioxide, carbon monoxide, and total volatile organic compounds (VOCs) at three fixed locations. DHSS has reviewed both sets of data to identify potential public health concerns for short-term health effects.

Odors

Odors were reported by DNR as being low today.

Hydrogen Sulfide and Other Reduced Sulfur Compounds

Hydrogen sulfide concentrations were well below levels of public health concern.

Sulfur Dioxide

Average sulfur dioxide concentrations did not exceed levels of public health concern, except for a limited time period at one monitoring location near the landfill.

Benzene and Total VOCs

Benzene was not detected in ambient air at any of the surveillance locations around the landfill.

Carbon Monoxide

Average carbon monoxide concentrations were well below levels of public health concern.

Radiation Rate

Gamma radiation rates continue to be at levels that are at or near natural background levels.

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May 20, 2013

The Department of Health and Senior Services (DHSS) has reviewed air quality screening data collected by the Department of Natural Resources (DNR) at Bridgeton Landfill on May 20, 2013. On April 23, DNR began routine, twice daily, surveillance of hydrogen sulfide, benzene, and odor levels around the entire periphery of the landfill. In addition, DNR has provided continuous monitoring of reduced sulfur compounds (reported as hydrogen sulfide), sulfur dioxide, carbon monoxide, and total volatile organic compounds (VOCs) at three fixed locations. DHSS has reviewed both sets of data to identify potential public health concerns. It should be noted that during routine data verification in the field, some high monitor readings for hydrogen sulfide and sulfur dioxide were not confirmed; however, DHSS evaluated the data as valid to be protective of public health.

Reduced Sulfur Compounds

All readings with the Jerome meter, which specifically detects hydrogen sulfide only, were well below acute levels of public health concern, with a maximum concentration of 7.9 parts per billion (ppb). DNR AreaRAE monitors detected reduced sulfur compounds at two of the monitoring locations, east and west of the landfill. While hourly average concentrations exceeded acute health-based guidelines for hydrogen sulfide, the compounds detected by AreaRAE monitors are not just hydrogen sulfide but primarily another reduced sulfur compound with lower toxicity.

Sulfur Dioxide

Concentrations of sulfur dioxide exceeded health-based guidelines for acute exposure at two of the monitoring locations, west and south of the landfill. While exposure to sulfur dioxide at these concentrations may cause irritation or other short-term symptoms, considerable dispersion is expected to reduce potential exposure levels at nearby residential areas. Sulfur dioxide concentrations were not detected at levels predicted to cause more serious short-term or long-lasting effects.

Odors

Low odors were identified near the landfill today. DHSS continues to recommend that during periods of objectionable odor, sensitive individuals should stay indoors as much as possible, avoid outdoor exercise, and seek medical advice for any acute symptoms. Symptoms associated with exposure to strong odors include headache, nausea, and fatigue. Symptoms generally associated with strong odors typically disappear once the odors dissipate.

Benzene, Total VOCs and Carbon Monoxide

Benzene was not detected in ambient air at any of the surveillance locations around the landfill. Hourly average concentrations of carbon monoxide and total VOCs did not exceed levels of health concern.

Gamma Radiation Rates

Gamma radiation levels are monitored continuously at three locations around the site using AreaRae instruments equipped with radiation detectors. Gamma radiation rates continue to be at levels that are at or near natural background levels.

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NEWS RELEASE: Department of Natural Resources and Department of Health and Senior Services to post Bridgeton Landfill air monitoring data and analyses daily beginning Monday (5.18.13)

For previous health analyses visit http://www.dnr.mo.gov/bridgeton/