Information for Illinois
No Regulations at the time of this printing, check with state and local health departments.
According to the Illinois Department of Public Health the safest was to clean up a former meth lab is to hire an environmental company trained in hazardous waste removal and cleanup. Their online recommendations include removing porous materials, HEPA vacuum, initial wash, clean and seal HVAC system, flush plumbing traps, detergent wash and rinse all surfaces three times, complete post remediation sampling when dry, and repaint with oil-based paint. No safe level of methamphetamine is listed.
Illinois Department of Public Health, Division of Environmental Health
525 W Jefferson St, Springfield IL 62761
The DEA has kept a catalog of properties since 2004 across the nation of locations of clandestine meth lab busts completed by their department, check to see if your property is on their list:
EPA Voluntary Guidelines for Methamphetamine Laboratory Cleanup