In NFPA 1 - Table 60.4.2.1.1.3 *MAQ’s of Hazardous Materials per Control Area*, there are numerous footnotes that may apply to a given material. My question is in regards to footnotes C and D, which both allow a 100% increase in quantity and can be used accumulatively. Really the question is does this mean you increase the original MAQ by 100% (doubling the quantity) and the add the same 100% again, making the final amount 3 times the original, or do you increase it by 100%, then increase that number by 100%, which would be 4 times the original?

Using the example of an Oxidizing Cryogenic Fluid the table allows 45 liquid gallons. But both footnotes C and D apply, thus if the product is stored in approved cabinets and in a fully NFPA 13 sprinklered building, is the final MAQ 135 gallons or 180 gallons?

Correct double double

for example

125, 250, 500

Only on the chemicals with both footnotes, and properly stored.