Microbiological waste can either be treated on-site in the lab or can be given to EHS for disposal. The following requirements must be met when treating biological waste in the lab.
All lab personnel who treat and dispose of microbiological waste on site in accordance with the guidelines described below, must keep the following records.
A minimum 4 log10 reduction shall be demonstrated on routine performance testing using appropriate Bacillus species biological indicators if treated waste exceeds 50 pounds in any given month. This testing needs to be performed on autoclaves that are used to treat special waste.
Acceptable methods of treatment of microbiological waste include:
To allow for sufficient steam access to or penetration of the waste, the waste shall be:
Microbiological waste which has been treated in accordance with the methods described above can be disposed of through the regular trash as long as the following procedures are followed:
Note: If treated waste is in a liquid form it can be disposed of through the sanitary sewer if it meets the requirements of the City of Waco POTW.
Carcasses and Body Parts of Animals
Carcasses and body parts of animals that have not been preserved must be double bagged to prevent leakage and kept frozen until pickup. Carcasses and body parts of animals that have been preserved must be separated from the preservative (refer to the chemical waste section of this manual for the disposal requirements of the preservative) and double bagged to prevent leakage.
Bedding of Animals Intentionally Exposed to Pathogens
This waste can be treated on-site in the lab as long as all the requirements listed under Microbiological Waste are followed.