1. Hazardous Waste Management
Hazardous Waste is regulated according to the Resource Conservation
and Recovery Act (RCRA)
Definition
The material must first be classified as a solid waste
The material must then be determined to have “hazardous” properties

2. Specific Definition

3. Exemptions

4. Specific Criteria for Hazardous Wastes
A waste my classified as Hazardous by two criteria:
1) Listing
2) Characteristic

5. Listed Wastes Three Lists 1) Hazardous Waste from Non-specific Sources
Wastes from common manufacturing processes
example: dirty solvents cleaning or degreasing
“F” designation “F001
2) Hazardous Waste from Specific Sources
Wastes from specific industrial sources
example: bottom sludge from the treatment of
wastewater produced by the wood preserving industry
“K” designation, K048-K052 petroleum refining wastes

6. 3) Discarded commercial chemical products
Off-specification materials, spill residues, discarded containers
That contain certain named chemical species
Actually two lists
a) Toxic wastes
“P” designation, P076 - nitric acid
b) Acutely Toxic Wastes
“U” designation, U002 - acetone

7. Characteristic Wastes
There are four characteristics that can
Make a waste a hazardous waste

8. Flashpoint < 60 C o
Easily Ignited
Burns Vigorously

9. Aqueous solution with:
pH < 2.0
pH > 12.5
Corrodes steel at a rate
Greater than 6.35 mm/yr

10. Unstable and forms a toxic
fume
Explodes
Reacts with exposure to
Air and/or water

11. Bioconcentrates
LD < 50 mg/kg 50 LC 50
Phytoxicity

12. Where do wastes come from?

14. Classification of Generators
Large Quantity Generators
> 1000 kg hazardous waste generated per month
Small Quantity Generators
100 – 1000 kg hazardous waste generated per month
Very Small Quantity Generators
< 100 kg/month