Restored check on the vs30 in the site collection [skip hazardlib]
Restored check on the vs30 in the site collection [skip hazardlib]


Former-commit-id: d79f8f24425cd7c5d90f7638169e21685a248403
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine