Source: http://www.braziliannr.com/brazilian-environmental-legislation/conama-resolution-3-90/
Timestamp: 2019-04-20 00:14:18+00:00

Document:
Establishes provisions related to air quality standards, as foreseen by PRONAR.
Art. 1 Air quality standards are the concentrations of atmospheric pollutants which, if surpassed, can be hazardous to human health, safety and the wellbeing of the population as well as possibly causes of damages tothe fauna and flora, material goods and the environment in general.
IV – detrimental to safety, the use and enjoyment of property and normal community activities.
I – Primary Air Quality Standards are pollutant concentrations that if surpassed may be hazardous to the health of the population.
II – Secondary Air Quality Standards are pollutant concentrations below those that can have any adverse effects on the wellbeing of the population as well as having minimal effects of the fauna, flora, goods and the environment in general.
Single paragraph. Air standard quality standards are objectives that should be reached through control strategies set by emission standards and must serve as guidelines for the creation of Regional Air Pollution Control Plans.
1 – medium annual geometric concentration of 80 (eighty) micrograms per cubic meter of air.
2 – medium concentration during 24 (twenty four) hours of 240 (two hundred and forty) micrograms per cubic meter of air which cannot be exceeded more than once per year.
1 – medium annual geometric concentration of 60 (sixty) micrograms per cubic meter of air.
2 – medium concentration during 24 (twenty four) hours of 150 (one hundred and fifty) micrograms per cubic meter of air which cannot be exceeded more than once per year.
1 – medium annual arithmetic concentration of 60 (sixty) micrograms per cubic meter of air.
2 – medium concentration during 24 (twenty four) hours of 150 (one hundred and fifty) micrograms per cubic meter of air which cannot be exceeded more than one per year.
1 – medium annual arithmetic concentration of 40 (forty) micrograms per cubic meter of air.
2 – medium concentration during 24 (twenty four) hours of 1oo (one hundred) micrograms per cubic meter of air which cannot be exceeded more than one per year.
1 – medium annual arithmetic concentration of 50 (fifty) micrograms per cubic meter of air.
1- medium annual arithmetic concentration of 80 (eighty) micrograms per cubic meter of air.
2- medium concentration during 24 (twenty four) hours of 365 (three hundred and sixty five) micrograms per cubic meter of air which cannot be exceeded more than one per year.
1- medium concentration during 8 (eight) hours of 10.000 (ten thousand) micrograms per cubic meter of air (9 ppm) which cannot be exceeded more than once per year.
2 – medium concentration during 1 (one) hour of 40.000 (forty thousand) micrograms per cubic meter of air (35 ppm) which cannot be exceeded more than once per year.
1 – medium concentration during 1 (one) hour of 160 (one hundred and sixty) micrograms per cubic meter of air which cannot be exceeded more than once per year.
1 – medium annual arithmetic concentration of 100 (one hundred) micrograms per cubic meter of air.
2 – medium concentration during 1 (one) hour of 320 (three hundred and twenty) micrograms per cubic meter of air.
1- medium annual arithmetic concentration of 100 (one hundred) micrograms per cubic meter of air.
2 – medium concentration during 1 (one) hour of 190 (one hundred and ninety) micrograms per cubic meter of air.
a) Total of Suspension Particles – Large-Volume Sampling Technique or Equivalent Method.
b) Smoke – Reflectance Technique or Equivalent Method.
c) Non-Inhalable Particles – Inertial Particle Separation/Filtration Technique or Equivalent Method.
d) Sulfur Dioxide – Pararosaniline method or Equivalent Method.
e) Carbon Monoxide – Non-dispersive Infrared Sensor or Equivalent Method.
f) Ozone – Chemiluminescence or Equivalent Method.
g) Nitrogen Dioxide – Chemiluminescence or Equivalent Method.
§1 Reference Methods are methods approved by the National Institute of Metrology, Standardization and Industrial Quality (INMETRO) and, in their absence, those recommended by IBAMA and the more adequate ones and those that should be preferentially used.
§2 Methods that are equivalent to the reference methods may be adopted as long as they have been approved by IBAMA.
§3 Reference conditions are set at 25 degrees Celsius and pressure at 760 millimeters of mercury (1013.2 millibars).
Art. 5 The monitoring of air quality is the responsibility of the respective States.
Art. 6 The established Air Quality Standards are also valid for the creation of Emergency Plans for Critical Air Pollution Events, for measures undertaken by states and municipalities as well as by private entities and the general community and serve as a reference for the prevention of serious and eminent risks to health of the population.
§1 Critical Air Pollution Events are characterized by high pollutant concentrations in the atmosphere during a short period of time caused by meteorological conditions that are not favorable for the dispersion of the same.
§2 The Plan should also establish Attention, Alarm and Emergency Levels.
§3 The definition of any of the above mentioned levels must consider the concentrations of sulfur dioxide, total of suspension particles, reaction between total particles in suspension and sulfur dioxide, carbon monoxide, ozone, non-inhalable particles, smoke, nitrogen dioxide as well as meteorological forecasts and foreseen and awaited intervening factors.
§4 Measures undertaken due to the occurrence of Attention and Alarm Levels are undertaken in order not to reach the Emergency Level.
h) medium concentration of nitrogen dioxide (NO2) during a 1 (one) hour period of 1130 (one thousand one hundred and thirty) micrograms per cubic meter.
thousand) micrograms per cubic meter.
§8 It is the duty of the States to acquire the necessary competence and to appoint the authorities responsible for the declaration of the different levels and these shall be made through any of the regular available means of mass communication.
§9 During the implementation of the above mentioned levels the pollution sources within the hit area will be subjected to the restrictions that have been previously established by the environmental organ.
Art. 7 CONAMA may establish other Air Quality Standards, apart from those stated here, if it deemed as necessary.
Art. 8 The primary air quality standards established by this Resolution will be implemented awaiting the decision by each state regarding the Class I, II and III classification mentioned in item 2, sub-item 2.3 of CONAMA Resolution 5/89.
Art. 9 This Resolution shall enter into effect on the date of its publication and all provisions to the contrary are hereby revoked.
This text does not substitute the text published in the Official Gazette on Aug. 22, 1990.

References: Art. 1

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§2

§3

Art. 5

Art. 6

§1

§2

§3

§4

§8

§9

Art. 7

Art. 8

Art. 9