Some of the higher readings from the three community ambient air monitors.
Ventura Drive: Sulfur dioxide (SO2) acute exposure levels of 10
parts per billion (ppb) SO2 or higher were experienced on three days, with high readings of 30 ppb
SO2. All 31 days in January had a daily exposure level to hydrogen sulfide (H2S) of 1 ppb or higher. The EPA recommended daily exposure level to H2S is 1.4 ppb. Air toxin sample results are available here .
Meraux site: Sulfur dioxide
acute exposure levels of 10 ppb SO2 or higher were experienced on three days,
with high readings of 30 ppb SO2. Ozone levels did not require any Ozone Action Day alerts. On four days in January the daily exposure level to hydrogen sulfide was 1 ppb or higher. Air toxin results are available by public records request.
Chalmette Vista :
Sulfur dioxide concentrations violated the one-hour health standard of 75 ppb SO2 on two days,
with high readings of 181, 173 and 162 ppb SO2.
On 29 days in January the daily exposure level to hydrogen sulfide was 1 ppb or higher. Hydrogen sulfide levels at Chalmette Vista had high readings of 45, 29,
and 23 ppb H2S. The State of California
has a H2S health limit of 30 ppb; Louisiana does not have such a standard. Particulate matter pollution PM2.5 levels
reached 48 and 42 micrograms per cubic foot.
PM10 levels reached 151 ug/m3. PM2.5 and PM10 standards are 35 ug/m3 and 150 ug/m3. http://www.epa.gov/air/criteria.html Data
excludes fireworks during the New Year’s Eve timeline, suspected of creating PM2.5 levels has
high as 91.0 and 53. 6 ug/m3 and sulfur dioxide levels has high as 95.6 ppb
SO2. Air toxin sample results are available by public records request.
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