Screening Distance is the downwind distance you should examine for possible smoke sensitive sites such as airports, highways, communities, recreation areas, schools, hospitals, nursing homes, etc.

The type of burn coupled with the Category Day determines the number of miles downwind to apply the screening process.

Identify your burn in one of the following four types:

  1. Backing fire less than 1,000 acres
  2. Head fire less than 1,000 acres
  3. More than 1,000 acres
  4. Piles/Windrows

Using the following table, find the block that represents the type of burn and Category Day, The number in the block is the minimum number of miles downwind to screen for smoke sensitive areas.

 Type of Burn

 I

II 

 III

 IV

 V

Backing Fire
Less than 1,000 acres

No
Burning

10

5

2.5

.75

Head Fire
Less than 1,000 acres

No
Burning

20

10

5

.75

Fire > 1,000 acres in size

No
Burning

20

10

5

.75

Piles/Windrows

No
Burning

30

15

8

.75