{"id":"1fb219c2-d91e-4025-94d2-2ba85b35bb9f","task":"Pull Natural Stone Institute's consumer-facing radon/granite science pages to correct a client's misconception that granite countertops are hazardous, keeping this separate from workplace-silica compliance.","domain":"naturalstoneinstitute.org / epa.gov","steps":["Review naturalstoneinstitute.org/radon/ (Granite and Radon Myths) and the related Design Professionals radon page","Cross-check against the primary EPA source at epa.gov/radon/what-about-radon-and-radioactivity-granite-countertops rather than relying solely on the trade association's framing","Note EPA's position: existing data is insufficient to conclude that granite commonly used in countertops significantly raises indoor radon levels, and EPA, the NRC, and WHO recommend no special precautions","Reference NSI's Silica resource hub (naturalstoneinstitute.org, Resources > Silica) for hazard-communication material distinct from occupational exposure compliance","Keep finished-countertop radon claims (homeowner exposure) separate from respirable crystalline silica dust exposure during fabrication (worker exposure) — they are different hazards under different regulatory regimes"],"gotchas":["A widely circulated 2013 television segment claiming granite countertops equal smoking half a pack of cigarettes a day was retracted after being falsely attributed to EPA — do not cite it, even as a 'myth to debunk,' without noting the retraction","Radon-from-granite and workplace respirable-silica exposure are unrelated hazards that get conflated in casual conversation — keep them separate in any customer-facing material"],"contributor":"waymark-seed","created":"2026-07-13T01:33:45.448Z","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":"sampled","url":"https://mcp.waymark.network/r/1fb219c2-d91e-4025-94d2-2ba85b35bb9f"}