1 Next add your ingredients: the compost and kelp or molasses. 2  Let the tea brew for about 24 hours. 3  Make sure the opening to the air pump is distributed evenly (cheapest is an air stone) and secured to the bottom, so it does not get pushed to the top overnight. 4  This will keep the tea sufficiently aerobic.
One example of a technical control is data encryption. Other examples are network intrusion detection systems, passwords, firewalls and access control lists. Continue Reading. Technical controls secure computing system and information access through strategically designed software and hardware.
Additional control mechanisms such as substitution of less hazardous materials/procedures, engineering controls and personal protective equipment (PPE) may be required to address employee exposure to the hazard(s). Some specific examples of administrative controls include: 1  Performing maintenance operations that involve toxic substances at night when the usual production staff is not present. 2  Rotating workers through various job assignments so that they do not develop repetitive motion injuries.