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.