PLACER COUNTY AIR POLLUTION CONTROL DISTRICT

RULE 312 - MINIMUM DRYING TIMES
(Adopted 11-12-74; Revised 06-19-79, 04-21-81, 05-20-85)

To lower the moisture content of the material being burned, the elapsed time between cutting and burning shall be:

  1. Sufficient time for other agricultural waste such as orchard prunings, small branches, vegetable tops and seed screenings to assure rapid and complete combustion with a minimum of smoke.
  2. A minimum of six (6) weeks for trees, stumps and large branches greater than six (6) inches in diameter.
  3. For rice straw, drying times shall be specified in RULE 315.C.