Final answer:
Among the statements provided about chemical waste, only option C is true, stating that liquid chemical wastes must be segregated by hazard types. Flushing chemicals down the drain or storing dry and liquid wastes together is not recommended, and full hazardous waste containers must be properly labeled.
Step-by-step explanation:
When dealing with chemical waste, it is critical to handle it with care using proper guidelines. Among the options provided, statement C is TRUE: Liquid chemical wastes must be segregated by hazard types. This segregation is essential to prevent dangerous reactions between incompatible chemicals, and it is a part of the standard safety protocols in laboratories and industries.
On the contrary, most chemicals cannot be flushed down the drain, even with copious amounts of water, as stated in statement A. This practice can lead to environmental pollution and may violate local and federal regulations. Additionally, dry chemical waste typically requires different storage conditions compared to liquid waste and should not be stored together, rendering statement B incorrect.
Regarding statement D, when a hazardous waste container is full, it should indeed be labeled as Hazardous Waste. This is a regulatory requirement to ensure that the waste is handled correctly and safely until it is disposed of or treated. Correct labeling is part of maintaining safety and compliance with waste management regulations.
It's important to always refer to material safety data sheets (MSDS) for guidance on disposal and handling and to follow environmental regulations set forth by authorities like the Environmental Protection Agency (EPA).