Aggregate amounts of flammable liquids

[BayPointArchitect]

Given:
We have a wide variety of flammable liquids in a sprinkled building where the liquids are stored inside individual steel drums (closed container). Each steel drum is 55 gallons.
The aggregate limit for each flammable liquid in order to avoid the "H" hazardous occupancy and the requirement for a control area is 360 gallons.
We have three 55 gallon drums of solvent primer for a total of 165 gallons.
We have three 55 gallon drums of acetone for a total of 165 gallons.
We have three 55 gallon drums of epoxy resin for a total of 165 gallons.
The total aggregate of Type 1B flammable liquids is then 495 gallons - which exceeds 360 gallons.

Question:
Is it required to combine all Type 1B flammable liquids while determining the aggregate amounts?
Or is it acceptable to say that each product is less than the 360 gallon limit and ignore the fact that we have more than one type of product?

As always, thank you in advance for your help.

ICC Certified Plan Reviewer
NFPA Certified Fire Plan Examiner

 

[TheCommish]

My understanding it is the aggregate total of the category, , flammable liquids has 3 classes, read across to the allowed limit in each column, highlight in green, then read the footnotes carefully.

Combustible liquids is different each class has separate aggregate totals

 

[CKoers]

If you hazardous material is in the same category, then it would be an aggregate. If the primer and the epoxy are both IB flammable liquids, they would be combined.

The barrels on these chemicals can often vary slightly such as different octanes of fuels or ratios, but none of that matters. If it is a flammable liquid as noted with the properties you can find on the SDS sheets then it would be lumped in together.