by Wilma Subra
Hydrogen Sulfide
Odor Threshold for Hydrogen Sulfide: 0.5 ppb
Physical Reaction Symptoms: 5 to 10 ppb
Acute Physical Health Symptoms:
| Venice Hydrogen Sulfide Air Monitoring Results for the period of April 28, 2010 - May 7, 2010 | |
| Date: | Hydrogen Sulfide (parts per billion): |
| April 28 | None Detected |
| April 29 | No Data |
| April 30 | No Data |
| May 1 | No Data |
| May 2 | 30 ppb |
| May 3 | 1,192 ppb |
| May 4 | 46 ppb |
| May 5 | 1,010 ppb |
| May 6 | 1,000 ppb |
| May 7 | 280 ppb |
The results of the Hydrogen Sulfide air monitoring in Venice indicates that the concentration from May 2 through May 7 exceeded the odor threshold and Physical Health Symptom concentrations. The Hydrogen Sulfide concentrations on May 3, 5 & 6 exceeded the Physical Reaction Symptoms concentrations by a factor of 100 to 120 times. The Physical Reaction Symptoms have been reported by individuals living and visiting in Venice.
Volatile Organic Chemicals
Louisiana Ambient Air Standards for Volatile Organic Chemicals:
The Louisiana Ambient Air Standards for the most toxic Volatile Organic Chemicals range from 0.25 ppb to 3.76 ppb Annual Average.
- 1,1,2,2-Tetrachloroethane 0.25 ppb
- Benzene 3.76 ppb
The Ambient Air Standards for the remaining Volatile Organic Chemicals range from 5.49 to 61.25 ppb Annual Average.
- 1 and 2-nitropropane 5.49 ppb
- Methylene Chloride 61.25 ppb
Acute Physical Health Symptoms:
| Venice Volatile Organic Chemicals Air Monitoring Results for the period of April 28, 2010 - May 7, 2010 | |
| Date: | Volatile Organic Chemicals (parts per billion): |
| April 28 | None Detected |
| April 29 | None Detected |
| April 30 | 3,084 ppb |
| May 1 | 923 ppb |
| May 2 | 3,416 ppb |
| May 3 | 780 ppb |
| May 4 | 1,243 ppb |
| May 5 | 37 ppb |
| May 6 | 483 ppb |
| May 7 | None Detected |
The results of the Volatile Organic Chemicals air monitoring indicates that the concentrations from April 30 through May 6 may have exceeded the Louisiana Ambient Air Standards for specific species of Volatile Organic Chemicals. The Volatile Organic Chemical concentrations on April 30 and May 2 may have exceeded the highest concentration of Annual Average Standard by as much 50 times. Specific chemicals that make up the total Volatile Organic Chemical concentrations are needed to further evaluate the results. This information has been requested from the Environmental Protection Agency. The Acute Physical Symptoms associated with the Volatile Organic Chemicals have been reported by individuals living and visiting in Venice.
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