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RADIOFREQUENCY / MICROWAVE EXPOSURE GUIDELINES 

(High Frequency Electromagnetic Waves) 
1Ý 
BUILDING BIOLOGY PRECAUTIONARY GUIDELINES (SBM-2008) For Sleeping Areas 


Power density in microwatt No Concern Slight Concern Severe Concern Extreme Concern 
per square meter .W/m. < 0.1 0.1-10 10 - 1000 > 1000 
per square cm .W/cm. < 0.000,01 0.000,01 - 0.001 0.001 - 0.1 > 0.1 

2Ý 
BIOINITIATIVE REPORT PERCAUTIONARY GUIDELINES (2007) www.bioinitiative.org/ 
Dr. Martin Blank - Columbia University 
Biologically Based Precautionary Levels 1,000 .W/m2 or 0.1 .W/cm2 
3Ý 
CANADA AND USA GOVERNMENT GUIDELINES (1999) 
In Canada, guidelines for Radio Frequency Wave exposure lay under the jurisdiction of Health Canada. Safety code 6 was developed in 1999 and 
offers federal guidelines for safe RF exposure levels. These limits are in the range of 2,000,000 to 10,000,000 .W/m2 or 200 to 1000 .W/cm2 and are 
based solely on the short term thermal effects or the heating of body tissue. Adverse biological effects have been documented at levels far below 
Safety Code 6 guidelines. No Canadian biological exposure guidelines exist for long term exposure to low level Radio Frequency Radiation. This also 
holds true for the USA. 

AC MAGNETIC & AC ELECTRIC FIELD EXPOSURE GUIDELINES 

(Low Frequency Electromagnetic Fields ELF, VLF) 
1Ý 
BUILDING BIOLOGY EVALUATION GUIDELINES (SBM-2008) For Sleeping Areas 


AC Magnetic - Flux Density No Concern Slight Concern Severe Concern Extreme Concern 
in nanotesla nT < 20 20-100 100 - 500 > 500 
in milligauss mG < 0.2 0.2-1 1-5 > 5 

AC Electric Field strength 
with ground potential 
in volt per meterV/m 
< 1 1-5 5 - 50 > 50 
Body voltage with ground 
potential in millivolt mV 
< 10 10-100 100 - 1000 > 1000 
Field strength potential-free 
in volt per meterV/m 
< 0.3 0.3-1.5 1.5 - 10 > 10 

2Ý 
BIOINITIATIVE REPORT PERCAUTIONARY GUIDELINES (2007) www.bioinitiative.org/ 
Dr. Martin Blank - Columbia University 
AC Magnetic Field Levels 1-2 mG / 100-200 nT 
AC Electric Field Levels Ð Not Addressed in Report 
3Ý 
CANADA AND USA GOVERNMENT GUIDELINES (1999) 
In Canada, guidelines for EMF exposure lay under the jurisdiction of Health Canada. Health Canada has not independently established guidelines for 
magnetic field or electric field exposure. When pressed, they will state that Canada follows the International Commission on Non-Ionizing Radiation 
Protection ÒICNIRPÓ guidelines of 830 mG or 83,000 nT (Magnetic Field) or 5000 V/m (Electric Field) for a 24-hr period. Since these guidelines are based 
on short-term acute exposure we still do not have guidelines that protect the public from long-term low level exposure, which is the case with the 
distribution of electricity. Associations based on epidemiological studies and cause-effect relationships based on laboratory experiments suggests 
that exposure to magnetic and electric fields should be thousands of times lower. 
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