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EPA 608 — Leak-Rate Math Drill

Annualize leak rates from sample log entries: 12 worked-math questions on the 10% / 20% / 30% triggers, the 30-day repair clock, and the 125% chronic-leaker line. Every answer shows its calculation and citation.

Rules current as of October 26, 2026.

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Studying for the real exam, or a certified tech checking the new rules? Either way, if an old study guide disagrees with an answer here, the citation under the answer is the one to trust.