NORTHERN SIERRA AIR QUALITY MANAGEMENT DISTRICT
RULE 314 - MINIMUM DRYING TIMES
(Adopted: September 11, 1991)
To lower the moisture content of the material being burned, the elapsed time between cutting and burning shall
- A minimum of three days for green straw and stubble.
- A minimum of three weeks for agricultural waste, such as orchard prunings, small branches, vegetable tops,
and seed screenings, to assure rapid and complete combustion with a minimum of smoke.
- A minimum of six weeks for trees, stumps, and large branches greater that six inches in diameter.
- Under Forest Management Burning the drying time shall be specified by the designated agency.