Guidance levels

Human health based guidance levels (HBGLS)for ingestion of contaminents in drinking water Oral HBGL 42 ug/L Arizona Department of Health Services 1999... 

Arizona Department of Health Services. 1999. Environmental Health. Groundwater health-based guidance levels. (HGBLs). http //www.hs.state.az.us/... 

SPEGL Short-Term Public Emergency Guidance Level... 

Drinking water guidance level based on a carcinogenic end point 30 pg/L WHO 1984... 

The known health effect associated with exposure to elevated levels of radon above the action or guidance level is an increased risk of developing lung cancer. The guideline levels for radon in existing homes are as follows ... 

Submarine Exposure Guidance Levels for Selected Hydrofluorocarbons HFC-236fa, HFC-23, and HFC-404a (2000)... 

NRC (National Research Council). 1985a. Emergency and Continuous Exposure Guidance Levels for Selected Airborne Contaminants, Vol. 4. Washington, DC National Academy Press. 

Standards and guidance levels for workplace and community exposures are listed in Table 1-12. The American Industrial Hygiene Association (AIHA 1955) stated that 50-100 ppm could probably be tolerated for 60 min based on... 

Chapter 5 Toxic Release and Dispersion Models Table 5-7 Emergency Exposure Guidance Levels (EEGLs) from the National Research Council (NRC) (all values are in ppm unless otherwise noted) ... 

United Kingdom Bleached Kraft pulp No achievable guidance levels proposed 10-50 mg/L 10-50 mg/L <1.5 kg/t... 

TABLE 23-17 Emergency and Continuous Exposure Guidance Levels for Selected Airborne Contaminants... 

Continuous ethyl acetate process, 10 483 Continuous Exposure Guidance Levels (CEGL), 21 837 Continuous extractors, 10 751 Continuous falling film SO3 sulfonation process, 23 544, 550-552 Continuous fiber composites, fabrication of, 26 766, 767... 

Short-Term Public Emergency Guidance Levels (SPEGL), 27 837-838 Short-term repeated toxicity studies, 25 217 Short-term storage, food preservation by, 72 77-78... 

NRC (National Research Council). 1987. Emergency and Continuous Exposure Guidance Levels for Selected Airborne Contaminants, Vol. 7. Washington, DC National Academy Press. NRC (National Research Council). 1988. Emergency and Continuous Exposure Guidance Levels for Selected Airborne Contaminants, Vol. 8. Washington, DC National Academy Press. 

It should be noted that, for establishment of a 1-h Emergency Exposure Guidance Level (EEGL) for another halocarbon, the NRC (NRC 1996 Bakshi et al. 1998) recommended application of a single interspecies UF of 10 to the cardiac sensitization test with the dog. Because blood concentrations of several halocarbons rapidly reached equilibrium, the NRC also extrapolated this 10-min test to the longer time period of 1 h. Controlled human data were not available for many of the materials considered by the NRC, whereas human data are available for HCFC-141b. 

Levels of NOx emissions in relation to Clean Air Act ambient standards and the risk-based alternative acute emissions guidance levels from Volume I of the Hazardous Waste Combustion Risk Analysis Guidance Document (EPA, 1998). This will address NOx as potentially convertible to nitric acid. 

Radon is present in the air and soil. It can leak into the indoor environment through dirt floors, cracks in walls and floors, drains, joints, and water seeping through walls. Radon can be measured by using charcoal containers, alpha-track detectors, and electronic monitors. Results of the measurement of radon decay products and the concentration of radon gas are reported as working levels (WL) and picocuries per liter (pCi/L), respectively. The continuous exposure level of 4 pCi/L or 0.02 WL has been used by USEPA and CDC as a guidance level for further testing and remedial action [33]. 

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