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Home > Fire Marshal > Permits > Fees > Fee Formula
Special Hazards Fee Worksheet Formula

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Fees for Special Hazards permits are based on the quantity of hazardous materials stored and/or handled at the site and the relative risk posed by each material.

Definitions  (click link for definition)

    A.   Quantity Range Number
    B.   Assigned Risk Factor
    C.   Fixed Permit Cost
    D.   Base Permit Fee

 
A.  Quantity Range Number

The "Quantity Range Number" as established in the Quantity Range Table below, is a number between 1 and 2 which is assigned to a hazard category based upon the amount of hazardous material located at the site.
Quantity Range Table
Quantity Range Number Solids
(Pounds)		 Liquids
(Gallons)		 Gases
(Cubic Feet)

1

 0 - 550 0 - 55 0 - 1,000

1.25

 > 550 - 5,500 > 55 - 550 > 1,000 - 5,000

1.5

 > 5,500 - 27,500 > 550 - 2,750 > 5,000 - 50,000

1.75

 > 27,500 - 55,000 > 2,750 - 5,500 > 50,000 - 100,000

2

 > 55,000 > 5,500 > 100,000


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B.  Assigned Risk Factor

"Assigned Risk Factor" as established below, is a number between 1 and 1.5  assigned to each hazard class and category of hazardous materials indicating the relative hazard posed by materials in that hazard category and the potential nature of controls required by the Fire Code.

Assigned Risk Factor Table
Hazard Class Assigned Risk Factor Hazard Class Assigned Risk Factor
Aerosol Products

1.3

 Liquid Petroleum Gas (LPG)

1.4
Cellulose Nitrate

1.3

 Magnesium

1.3
Combustible Fiber

1.2

 Organic Peroxides  
Combustible Liquids       Unclassified

1.5
    Class II

1.2

     Class I

1.4
    Class III-A

1.1

     Class II

1.3
    Class III-B

1.0

     Class III

1.2
Compressed Gases

 

     Class IV

1.0
    Highly Toxic

1.5

 Oxidizers

 
    Pyrophoric

1.4

     Class 4

1.5
    Flammable

1.4

     Class 3

1.4
    Unstable

1.4

     Class 2

1.2
    Oxidizing

1.4

     Class 1

1.1
    Toxic

1.3

 Pyrophoric Liquids and Solids

1.3
    Corrosive

1.3

 Toxic Liquids and Solids

1.2
Corrosive Liquids and Solids

1.1

 Unstable (reactive) Liquids and Solids  
Cryogenic Fluids

1.3

     Class 4 1.5
Explosives

1.5

     Class 3 1.4
Fireworks

1.4

     Class 2 1.3
Flammable Liquids, Class I

1.4

     Class 1 1.0
Flammable Solids

1.3

 Water-Reactive Materials  
Highly Toxic Liquids and Solids

1.5

     Class 3 1.5
        Class 2 1.3
 

 

     Class 1 1.0


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C.  Fixed Permit Cost

"Fixed Permit Cost"  is one hundred fifty-two dollars ($152.00) and is the minimum cost for the Seattle Fire Department to issue a hazardous material permit.

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D.  Base Permit Fee

Base Permit Fee is determined by multiplying the sum of the products of the quantity range number and assigned risk factor for each hazard class by the fixed permit cost divided by 1.1 and is represented by the following equation:

Base permit fee =

Where:  Q = The Quantity Range Number
             R = The Assigned Risk Factor
             F = The Fixed Permit Cost is $152.00 

When an individual material has multiple hazards, only the hazard presented by the hazard class that has been assigned the highest risk factor shall be considered in the fee calculation.

Example:

XYZ company stores fifty (50) gallons of gasoline and two hundred (200) gallons of 50% nitric acid.  Gasoline is classified as a Class 1 Flammable Liquid which has an assigned risk factor of 1.4.  Nitric acid (50%) is classified as both a corrosive liquid and a Class 2 oxidizer.  Because 50% nitric acid presents two separate hazards (corrosive and Class 2 oxidizer), only the Class 2 oxidizer hazard is considered in the fee calculation because it has an assigned risk factor of 1.2 compared to 1.1 risk factor assigned to corrosives.

Base Permit Fee = [(1)(1.4)flammable + (1.25)(1.2)Class 2 Oxidizer]  [$152.00 / 1.1]
Base Permit Fee = $400.73


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Last Modified:  September 22, 2005