Recycling Grease Trap Waste October 4, 2011 Ben Cowen Organics Account Executive 7651 Esters Blvd Irving, TX 75063

1.Your kitchen’s complete plumbing system, including sinks, dishwashers, floor-drains and mop-sinks, drain into the grease trap or grease interceptor system. 2.Wastewater flows into either an interior or exterior (usually in-ground) grease trap system. A baffle separates the inlet and outlet of the trap, keeping grease in. 3.Grease floats to the top of the grease trap, while solids settle on the bottom. The trap or interceptor must be vacuum pumped regularly by a skilled service provider to remove the entire contents of the trap. 4.Clean water then continues to flow into your sewer or septic system. How Grease Interceptor Works How Grease Interceptor Works Grease Interceptor Diagram

Grease Trap Basics Trap Servicing Completely evacuate grease trap waste Be sure to remain in compliance with local ordinances Preventive Maintenance Cleaning and power washing of trap walls and floor Line Jetting of incoming and outgoing grease trap lines recommended every 24 weeks

Hierarchy of Environmentally Beneficial Disposal of Grease Trap Waste Methods of Disposal

Traditional Disposal Methods The Landfill

Traditional Disposal Methods LandApplication

Traditional waste material, but there are alternatives… Approx. 99% of grease trap waste can be converted/recycled On path to achieving 97+% beneficial reuse of all grease trap waste Over 7 Million pounds in 2010 diverted from landfills Beneficial Reuse Create Beneficial Reuse of a Traditional Waste Material

Renewable Energy from Anaerobic Digesters Grease trap waste is added to septage or manure digesters to accelerate methane gas production Creates new, domestic renewable energy source Reducing the creation of climate warming gases & need for foreign fossil fuels Renewable Energy Create Beneficial Reuse of a Traditional Waste Material

Pretreatment Plant Filtration Sedimentation Chemical Processes

Anaerobic Digester Commercial Digester Waste Water Treatment Plant

Renewable Energy Through anaerobic digestion, we create electricity…

Liquid Environmental Solutions Sustainability Results Recycled Water Waste To Energy Waste to Fuel LandfillTotal YTD 2010 Totals74.10%15.40%1.30%9.20%100.00% Commitment to the Environment Diverted 211,860,000 gals, or the equivalent of 321 Olympic swimming pools

Quick Facts About Organic Waste… Quick Facts About Organic Waste… Organic food waste is the third largest portion of the waste stream in the United States, yet it is also the least recovered portion at just under 3%. Up to 75% of your waste volume and more than 50% of your disposal costs can be contributed to organic waste— produce, dairy, meats, and other foods. Study conducted by the University of Arizona claims that the country's supermarkets, restaurants and convenience stores throw out 27 million tons between them every year (representing $30 billion of wasted food). When food rots, it releases methane, a greenhouse gas which the U.S. Environmental Protection Agency (EPA) says is 20 times more damaging to the environment than carbon dioxide (CO2). Organic Waste Recycling

Organic Composting Program Reduce disposal and hauling costs. Reduce the numbers of compactor pickup at your stores and reduce your overall disposal and hauling costs Decrease the amount of materiel being sent to local landfills. Almost all organic waste is sent to landfills if not recovered. The anaerobic breaking down of organic waste is a significant source of methane gas production and leachate in landfills. Improve soil properties with compost. Compost can improve the physical, chemical and biological properties of soil, as well as provide indirect environmental benefits such as soil and water conservation and reduction of pesticide use. Support local economy by creating and sustaining new jobs. Composting facilities employ four times more people on a per-ton basis than landfills. Hauling and collection service is also needed. Creating a composting infrastructure could create new jobs in your community. Benefits of Diversion

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