PART 58 — AMBIENT AIR QUALITY SURVEILLANCE [ 40 CFR 58 ]PART58 — AMBIENT AIR QUALITY SURVEILLANCE [ 40 CFR 58 ]Table of ContentsSubpart A — General Provisions§ 58.1 — Definitions.[ Last FR update: 02/09/2010 ]§ 58.2 — Purpose.§ 58.3 — Applicability.Subpart B — Monitoring Network§ 58.10 — Annual monitoring network planand periodic network assessment.[Last FR update: 08/31/2011 ]§ 58.11 — Network technical requirements.§ 58.12 — Operating schedules.[ Last FR update: 06/22/2010 ]§ 58.13 — Monitoring network completion.[ Last FR update: 08/31/2011 ]§ 58.14 — System modification.§ 58.15 — Annual air monitoring datacertification.§ 58.16 — Data submittal and archivingrequirements.[ Last FR update:06/22/2010 ]Subpart C — Special Purpose Monitors§ 58.20 — Special purpose monitors (SPM).[ Last FR update: 11/12/2008 ]Subpart D — National Air Monitoring Stations(NAMS)§ 58.30 — Special considerations for datacomparisons to the NAAQS.Subpar...