CCPA / CCAC

3.1 AMMONIA 

Guiding Principle 4: 

The ammonia concentration should be less than 25 ppm and, generally speaking, it should not exceed 5 ppm .

The ammonia concentration can be measured by an ammonia sensor or a photoionization volatile organic compound sensor, sensitive to ammonia in addition to making it possible to measure the concentration of total volatile organic compounds in a room. This measurement should be compared with that obtained for the supplied air, because ventilation with fresh air only reduces the increase in ammonia concentration. As mentioned in Table 1, the air supplied should not contain ammonia, therefore the air exchange rate should be increased as soon as the ammonia concentration exceeds the measured value by 5 ppm for Ambiant air. If the value of this difference approaches 20 ppm, peak ventilation should be provided (between 15 and 20 air changes per hour) to purge the air. 

3.2 CARBON DIOXIDE 

Guiding Principle 5: 

Any increase in the concentration of carbon dioxide in ambient air should be less than 500 ppm

Monitoring carbon dioxide concentrations is particularly important in premises where euthanasia is carried out with this same gas. As part of this practice, the concentration of carbon dioxide can approach or exceed the exposure limit value set at 5,000 ppm without adequate ventilation to protect health.

3.3 PARTICLES 

Guiding Principle 6: 

The difference between the concentration of fine particles in the supplied air and that in the ambient air should not exceed 12 micrograms per cubic meter (μg/m3) or 35.3 million particles per cubic meter (1 million particles per cubic foot), measured using an optical particle counter with a 0.3 micrometer (μm) channel.

3.4 TOTAL VOLATILE ORGANIC COMPOUNDS 

Guiding Principle 7: 

The difference between the concentration of total volatile organic compounds in supplied air and that in ambient air should not exceed 500 micrograms per cubic meter (μg/m3) or 200 parts per billion (ppb), measured at using a volatile organic compound sensor equipped with a photoionization detector.