Ask your radon mitigation contractor about sealed sump lids, drain tile integration
https://privatebin.net/?fa0accb314684775#B4UxftHxVwTtCLUSqqs9aTm9Kw7a9mvp2vygwKnMhFdr
Ask your radon mitigation contractor about sealed sump lids, drain tile integration, and vapor barriers to maximize the effectiveness of your radon system.