Overview
Other waste management concern
- Instrument or process effluents directly draining to the sanitary sewer
- In-line effluent traps or filters
- Neutralization
This is a catch-all citation that is for other concerns related to lab waste management that don’t fall under one of the other items in this category. In addition to the items previously identified, a few items to pay attention to are provided here. Investigate any equipment or process that directly drains to the sanitary sewer (e.g., developer).
Often such equipment may have a filter which would need to be tagged for collection when changed. If you encounter such a case, investigate to ensure the chemicals being disposed via the sanitary sewer are allowed (listed in the SOP Sewer Disposal List). Some labs may have grit traps for processes that involve significant sediment. When the grit trap is cleaned, that waste is considered newly generated and would require a waste determination (often involves analytical test on our end). This newly generated waste should be appropriately containerized until the waste determination and subsequent management can be determined.
Neutralization of liquid waste requires a LDR (Land Disposal Restriction) notification on file at EHS for that process. For this reason, we discourage the neutralization of liquid waste.
Solvent distillation for the purpose of reclamation (i.e. cleaning up dirty acetone) requires significant regulatory compliance and needs special approval from the Director of EHS. If you encounter any solvent distillation activities, gather the information on the type of solvent, quantities, and notify the Senior Specialist upon your return.