{"query":{"parameter":"sulfur dioxide","place":"CA-ON","medium":null,"statistic":null,"kind":null},"searched":{"places":["CA-ON","CA"],"parameter_keys":["cas:7446-09-5","cas:33990-98-6","cas:102424-23-7","cas:65345-27-9"],"names_matched":[["sulfur dioxide","cas:7446-09-5"],["1 decene polymer with sulfur dioxide","cas:33990-98-6"],["2 2 oxybisethanol reaction products with ammonia morpholine derivs residues reaction products with sulfur dioxide","cas:102424-23-7"],["ethanol 2 2 oxybis reaction products with ammonia morpholine derivs residues reaction products with sulfur dioxide","cas:102424-23-7"],["2 aminoethanol compound with sulphur dioxide 1 1","cas:65345-27-9","sulphur dioxide"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order"},"total":4,"offset":0,"returned":4,"next_offset":null,"rows":[{"id":"acd792bbd798c8af","parameter":"Sulphur Dioxide","value":"100","value_num":100,"unit":"µg/m³","statistic":"hourly_avg","direction":"max","kind":"limit","medium":"ambient_air","level":"regional","parameter_key":"cas:7446-09-5","place":["CA-ON"],"conditions":["averaging period: 1 hour","at a point of impingement: the concentration the discharge results in, or would result in according to an approved dispersion model (s. 20 (1), (2)); s. 20 binds every facility's discharges on or after February 1, 2020 (s. 20 (3)(e))"],"cite":{"instrument":"ca_on_419_05","title":"Ontario Regulation 419/05, Air Pollution — Local Air Quality — Schedule 3, standards with variable averaging periods","issuer":"Government of Ontario (Environmental Protection Act; Ministry of the Environment, Conservation and Parks)","edition":"consolidation period July 1, 2023 - e-Laws currency date; last amendment O. 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