Tuesday, May 15, 2012

Mid May Air Quality Report

Mid May Air Quality Report from the the three air monitors in St. Bernard Parish.
LDEQ's Ch_Vista monitor is located in Bluebird Park, LDEQ's Meraux monitor is located at Joe Davies Elementary school and Valero's Ventura Drive monitor is located in Floral Estates.

LDEQ has stated sulfur dioxide levels at at 12 ppb causes headaches and other adverse quality of life; we've already had 9 days in May with SO2 levels at or above 12 ppb, and one day over the EPA one-hour health standard of  75 ppb SO2.  That reading was 120 ppb SO2 at the Ventura monitor.

For Hydrogen Sulfide,  EPA infers a recommended daily exposure to H2S without risk to be 1.4 ppb.  The World Health Organization advises ambient concentration levels of hydrogen sulfide should not exceed 5 ppb with a 30 minute averaging time.  Times shown below are hourly.


May 2012 Air Quality Readings
  
Hydrogen Sulfide &
Sulfur Dioxide
Particulate Matter
   & Wind Direction
5/1/2012 3am Ventura 4 ppb H2S
4am Ventura 3 ppb H2S
Wind Dir.
5/2/2012 2pm Ch_Vista 6 ppb H2S
Ventura 48 ppb SO2 3 ppb H2S 146
3pm Ch_Vista 3 ppb H2S
Ventura 120 ppb SO2  2 ppb H2S 152
5pm Ch_Vista 35.7 ppb SO2
5/3/2012 9am Ch_Vista 11.8 ppb SO2
10am Ch_Vista 11.3 ppb SO2
11am Ch_Vista 15.5 ppb SO2
5/4/2012 7pm Ch_Vista 23 ppb SO2
10pm Ch_Vista 4 ppb H2S
5/5/2012 1am Ventura 4 ppb H2S 218
2am Meraux 9.0 ppb SO2   
Ventura 4 ppb H2S 248
3am Meraux 6.6 ppb SO2
Ventura 4 ppb H2S 254
7pm Ch_Vista 26.9 ppb SO2
5/6/2012 2am Meraux 4 ppb H2S
Ventura 4 ppb H2S 91
3am Ventura 4 ppb H2S 249
PM 10 Wind D.
5/7/2012 2am Ventura 3 ppb H2S 80
3am Ventura 4 ppb H2S 181
4am Ch_Vista 45 272
Ventura 4 ppb H2S 184
5am Ventura 4 ppb H2S 35 116
6am Ventura 3 ppb H2S 34 146
2pm Ch_Vista 33.3 ppb SO2
4pm Ch_Vista 24.4 ppb SO2
5/8/2012 midnight Ch_Vista 31.5 ppb SO2 307
5/10/2012 4am Ventura 4 ppb H2S
5am Ventura 5 ppb H2S
6pm Ch_Vista 31.2 ppb SO2
8pm Ventura 39
10pm Ventura 38
5/11/2012 12am Ch_Vista 13.0 ppb SO2
4am Ventura 3 ppb H2S
5am Meraux 4 ppb H2S
Ventura 3 ppb H2S
  
5/12/2012 9am Ch_Vista 50.3 ppb SO2
11am Ch_Vista 54.4 ppb SO2
4pm Ch_Vista 33.4 ppb SO2
6pm Ch_Vista 20.2 ppb SO2
health  standards
SO2 75 ppb hourly average
H2S 1.4 ppb recommended daily exposure
PM 2.5 35

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