What to do in a sewage leak

A few days ago I attended a residence that faced a sewage leak resulting from a fracture in plumbing that serviced the home.  The spilled sewage spread and saturated an area of soil in the crawlspace below the house.  Although sewage is transferred into the ground every day through municipal treatment units or residential septic systems, sewage on the surface of soil may become a health risk.  To restore the site, the contaminated soil was removed from under the dwelling with a high powered vacuum and clean soil was used as backfill.  To ensure that air-borne contamination was addressed, the crawlspace was cleaned and the dwelling vented.  Now that the contaminated soil has been removed and the impacted areas have been cleaned, air sampling will be carried out within the building.