What it means for your design
ASTM F1346 is a real test, not a label. In the summary of the standard we've read, a cover on a pool wider than 8 feet has to hold a 485-pound load and drain standing rainwater within 30 minutes. A solar blanket or bubble cover isn't a safety cover.
Under the state pool code, a powered F1346 cover can take the place of the pool-area fence, and a listed cover is also one of the options where the house wall forms part of the barrier. Which way Alpine's form and its pool chapter fit together is the first thing we confirm with the city.
Our advice doesn't change with the rule: the fenced yard with self-closing gates, plus the automatic cover on every pool. A cover only works when it's closed and kept clear of water, and no single layer makes a pool safe for a toddler.
Every MP pool gets an automatic safety cover, so budget for it from the start. Latham's 2026 guide puts automatic covers at about $10,000 to $20,000. It earns some of that back: the Department of Energy says covers cut chemical use and make-up water, and save roughly half or more of heating cost.