Facilities report the amounts of each pollutant they have released to the environment at their own location (on site). They also report how much of the substance was sent off-site for disposal, or transferred for recycling or other waste management. Each country's PRTR has evolved with its own list of pollutants, sector coverage, and reporting requirements. For more information, see : Understanding Taking Stock
Each country requires PRTR reporting by facilities in specific industrial sectors or undertaking specific industrial activities. Click here for more information.
Canada, Mexico and the United States have adopted the North American Industry Classification System (NAICS), whose codes are used to categorize the industrial activities of a facility. Although there is some variation among the three countries in the subsector categorizations and codes used, the breakdown of industrial sectors into general categories is the same:
|11||Agriculture, forestry, fishing and hunting|
|21||Mining, quarrying and oil and gas extraction|
|22||Utilities (electricity, water and gas distribution)|
|48/49||Transportation and warehousing|
|51||Information and cultural industries|
|52||Finance and insurance|
|53||Real estate and rental and leasing|
|54||Professional, scientific and technical services|
|55||Management of companies and enterprises|
|56||Administrative and support, waste management and remediation services|
|62||Health care and social assistance|
|71||Arts, entertainment and recreation|
|72||Accommodation and food services|
|81||Other services (except public administration)|
PRTR reporting requirements are based in part on the industrial activity undertaken within a facility, and not only the industry code assigned to that facility. Therefore, not all facilities within a given sector might have to report. For example, within the economic sector that includes dry-cleaning only those facilities undertaking the actual dry-cleaning process, and not clothing drop-off points, might be required to report. Another example is a food processing plant that is required to report because it has its own power plant to generate electricity.
Readers should also note that facilities with similar activities can report under different, or multiple, NAICS codes, depending on the activities undertaken at the facility.
Taking Stock Online provides data at the 3-, 4- and 5-digit NAICS code level. In some cases, the North American Industry Classification System (NAICS) codes differ among the three countries. For example, the code for Wholesale Trade is 41 in Canada, 42 in the United States and 43 in Mexico. When querying data for an industrial sector whose code begins with any of the 2 digits below, the results returned might include only partial data. Therefore, you might also wish to consult the data reported under the corresponding codes provided.
|Industrial Sector Name||Corresponding Codes in each Country|
(for the series starting with the 2 digits indicated)
|Retail Trade||44, 45||46||44, 45|
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