What's a controlled environment?

Any area that is restricted to general use because of:
 

1. special contamination requirements
2. special power requirements
3. special security concerns
4. special temperature or humidity control

All of these areas are typically overlooked by the regular custodial staff. All of these areas need to be cleaned just like any other area of the building. And in the case of special contamination requirements, the area will need to be cleaned more often.

Examples of controlled environments include:

Cleanrooms, computer rooms, telecom/datacom closets or termination rooms, telecom/datacom switching centers; cable head ends; cellular communication shacks and hubs; specialized production environments; laboratories; biomedical facilities, clean rooms, CLASS 10 and under.