Tier Two reporting requirements

Under the Emergency Planning and Community Right-to-Know Act (EPCRA) Section 312, any facility in Washington that stores over a certain amount (reporting threshold) of a hazardous chemical must submit a Tier Two report by March 1 each year. 

Send this report to:

  • The Washington State Emergency Response Commission (SERC)
  • Their Local Emergency Planning Committee (LEPC)
  • Their local fire department

What do I need to report?

You must report the following for Tier Two:

  • Facility identification
  • Chemical name(s)
  • Physical and health hazards
  • Actual pounds for maximum
  • Average amounts stored
  • Storage type
  • Location descriptions

Reporting threshold

The threshold levels for reporting chemicals stored onsite at any one time are:

  • 10,000 pounds for hazardous substances.
  • 500 pounds or the threshold planning quantity, whichever is less for an Extremely Hazardous Substance (EHS).

Refer to your SDS/MSDS to determine if your product contains an EHS ingredient.

To determine the threshold planning quantity, refer to the Environmental Protection Agency's Consolidated List of Lists. All EHSs are listed, but not all reportable products are included.


An exemption should be filed if your business, during the previous calendar year, has:

  • Closed.
  • Reduced the quantity of all stored chemicals below the reportable quantities.

Exemption Notification for EPCRA 312 Tier Two Inventory Reporting

What are the codes for reporting?

Codes Types of Storage
A Above ground tank
B Below ground tank
C Tank inside building
D Steel drum
E Plastic or non-metallic drum
F Can
G Carboy
H Silo
I Fiber drum
J Bag
K Box
L Cylinder
M Glass bottles or jugs
N Plastic bottles or jugs
O Tote bin
P Tank wagon
Q Rail car
R Other
S Sulfuric acid in batteries only
Code Pressure
1 Ambient pressure
2 Greater than ambient pressure
3 Less than ambient pressure
Code Temperature
4 Ambient temperature
5 Greater than ambient temperature
6 Less than ambient temperature, but not cryogenic
7 Cryogenic conditions

What are the excluded substances?

  • Any food, food additive, color additive, drug, or cosmetic regulated by the Food and Drug Administration (FDA).

  • Any substance present as a solid in any manufactured item to the extent that exposure to the substance does not occur under normal conditions of use.

  • Any substance used for personal, family, or household purposes, or is present in the same form and concentration as a product packaged for distribution and use by the general public.

  • Any substance used in a research laboratory, hospital, or other medical facility under the direct supervision of a technically qualified individual.

  • Any substance used in routine agricultural operations or fertilizer sold by a retailer to customers.