There are 5 wastewater streams at Mendota Agri-products. They consist of bulk, truck washing, floor washing, rendering condensate, and evaporator condensate. Once a settling tank has separated, the water is taken off the bottom and run through the plant drain system. The emulsion is sent to the evaporator and grease to storage. Truck washing and floor washing are sent through the plant drain system. Rendering condensate is pumped from the cooker basement to the plant drain system. The evaporator condensate is pumped to the inside black to be used to wash vapors in the venturi scrubber and then sent to the plant drain system. Once in the plant drain system, water is filtered through a screen with 3/16" holes. This is to catch gravel and plastics, which is sent to the trash bin. The water is then sent to the purge tank. In the purge tank, grease that has spilled while dumping trucks is recaptured and sent to the evaporator to be processed. The water is then taken off of the bottom of the tank and sent to the gravity separator. In the gravity separator, paddles drag solids off to the bottom and skim grease off the top, sending both to the bulk pit to be reprocessed. Samples are taken from water discharging to lift station once per shift during tank settling. These samples are spun in a test tube centrifuge to see if any grease is present. If there is grease the top of the gravity separator is dropped into the bulk pit. The water is then pumped from the lift station to the anaerobic lagoon. In the anaerobic lagoon, enzymes create ammonia. The water is gravitated to the storage lagoons where ammonia is changed to nitrogen. Twice a year, the water in the storage lagoons is samples and sent for testing. The test checks the nutritional value of the water. Land application rate is then determined by the nitrogen value. Then the water is pumped through pump house to land application sites. In the pump house, the air is monitored for gases, since stagnate water in piping becomes septic and creates gases that could be harmful. Also, water is monitored for gallons per minute and total gallons, for correct application rate. The final stage is land application. Water is applied only once per crop rotation. In the fall, it is injected into the ground while in the spring it is surface applied. No more then the equivalent of 1" of rain can be applied per pass. The soil is also tested for pH and the water table is checked.