• Chemical Name:

The system will automatically display the selected chemical.


  • Chemical CAS #:

The system will automatically display the assigned CAS number of selected chemical.


  • Toxic Levels of Concern:

The system will display the appropriate toxic levels of concern (LOCs) for each chemical.


See Appendix for more information about LOCs

Source:

https://response.restoration.noaa.gov/oil-and-chemical-spills/chemical-spills/resources/toxic-levels-concern.html


Three most common public exposure guidelines are Acute Exposure Guideline Levels (AEGLs), Emergency Response Planning Guidelines (ERPGs), and Protective Action Criteria for Chemicals (PACs). AEGLs, ERPGs, and TEELs all have three tiers of exposure values for each covered chemical. There are some key differences between the different types of exposure guidelines, however, at a very general level, the tiers are similar: the first tier (e.g., AEGL-1) is a mild effects threshold, the second tier (e.g., AEGL-2) is an escape-impairment threshold, and the third tier (e.g., AEGL-3) is a life-threatening effects threshold.


  • AEGL-1. Notable discomfort, irritation, or certain asymptomatic non-sensory effects. However, the effects are not disabling and are transient and reversible upon cessation of exposure.


  • AEGL-2. Irreversible or other serious, long-lasting adverse health effects or an impaired ability to escape.


  • AEGL-3. Life-threatening health effects or death.




  • Source of Contamination:

Select one of the two options.


  • Continuous. A source that releases gas into the atmosphere at a constant or near-constant rate for an extended period of time


Note: If you choose Continuous, you must enter the Release Duration.


  • Instantaneous. A very short-term release that lasts 1 minute


Note: If the Source of Contamination is Instantaneous, you DO NOT need to enter the Release Duration.



  • Chemical Amount:

By default, the system will automatically display the maximum daily amount of the chemical stored at the facility.


  • You can change the value. Enter the chemical amount
    • Value should be between 1 and 999,999,999 pounds

 

  • Release Speed Unit:

Select one of the following options.

  • pounds/sec
  • pounds/min
  • pounds/hour


  • Release Duration (1 to 60 minutes):

If the Source of Contamination is Continuous, you must enter the Release Duration.


  • Enter the duration of the chemical release in whole minutes
    • Value should be between 1 to 60 minutes