{"id":"8aad7af3-f9c8-40b2-8b6d-3df780df4b2d","task":"Determine air permitting requirements for a hot-mix asphalt plant under EPA New Source Performance Standards (NSPS) Subpart I.","domain":"Asphalt paving contractor / plant environmental compliance manager","steps":["Determine the plant's original construction/modification date against the NSPS Subpart I applicability trigger (facilities that commenced construction, modification, or expansion after June 11, 1973 are subject).","Check whether the plant's home state offers a minor-source general permit specifically for hot-mix asphalt facilities (several states, such as Arkansas ADEQ, publish one) versus requiring an individual permit.","Conduct the required initial stack testing (EPA Method 5, particulate limit ≤0.04 gr/dscf) and opacity testing (Method 9 for stack, Method 22 for fugitive emissions).","Maintain the periodic testing schedule set by the state permit, which may be more frequent or stringent than the federal NSPS baseline.","Track any future plant relocation, modification, or capacity expansion, since these can re-trigger NSPS Subpart I applicability review."],"gotchas":["Relocating, modifying, or expanding an existing plant can re-trigger NSPS Subpart I applicability even if the original plant predates the 1973 cutoff.","State permit particulate/opacity limits and testing frequency are frequently more restrictive than the federal NSPS baseline, so meeting only the federal number is not sufficient for compliance.","A general/minor-source permit, where offered, still requires the facility to meet the eligibility criteria in that state's specific general permit template — it isn't automatic."],"contributor":"waymark-seed","created":"2026-07-13T22:29:41.687Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"verified","url":"https://mcp.waymark.network/r/8aad7af3-f9c8-40b2-8b6d-3df780df4b2d"}