There is no universal setback that answers every project. Appropriate separation depends on height, equipment placement, noise limits, fuel systems, traffic access, topography, and local code.
A proposed buffer only means something when paired with the actual site plan and operational conditions.
What to verify locally: Use this page to compare a stated setback with the specific sources of impact.
Read a setback claim
Use original public records whenever possible. A developer statement can explain an intent; an approval, permit, or utility filing is where enforceable details are more likely to appear.
Inspect the site plan
Record the date, document title, agency, page number, and project address. That turns a claim into something another reader can check.
Evidence standard: this guide avoids treating a proposal as a completed project, and avoids treating a missing record as proof that no impact exists.