21 Waste and Recycling ¤ Segregate incompatible materials ¤ Use secondary containment to capture leaks ¤ Maintain your spill kit with appropriate materials; restock after each use • Location ¤ Keep waste in the room where it was created ¤ Dispose of waste containers at least every 90 days ¤ Contact EH&S immediately if you have 55 gallon of hazardous waste or 1L of acutely toxic waste Identification of Unwanted Materials The user determines when a chemical is no longer wanted. Unwanted chemicals may be used, unused, expired, or even unknown. All you have to do is indicate what chemicals you wish to discard, submit a Waste Removal request, and EH&S will pick them up. Q: But what about ‘harmless’ chemicals? A: While it’s true that some chemicals are relatively safe and could be discarded down the drain or in the trash, the regulations are complicated, so EH&S will help you make that determination. Call EH&S before you pour any chemical down the drain. EH&S will also collect all unused chemicals, since these could potentially be reused by someone else. EH&S maintains a Chemical Redistribution Program for items that may be suitable for reuse. This is a valuable resource for many university departments. Please check the inventory for items that may fill your needs. Chemicals are free and delivered right to your lab. Once EH&S has collected the unwanted chemicals, the best management or disposal method will be followed. Satellite Accumulation Proper accumulation of your waste or unwanted chemicals is critical for maintaining a safe and compliant workspace. The accumulation requirements outlined in this section are based on EPA rules and must be followed. Failure to do so may result in violations and/or fines. But more importantly, the rules are designed to keep you and others healthy and safe.