Section 100. Treatments

A. Fumigation is authorized for use on pine logs with bark attached, pine lumber with bark attached, pine bark nuggets (including bark chips), and pine stumps, as follows: logs, lumber, and stumps may be treated with methyl bromide at normal atmospheric pressure with 48 g/m³ (3 lb/1000 ft³) for 16 hours at 21° Celsius (70° Fahrenheit) or above, or 80 g/m³ (5 lb/1000 ft³) for 16 hours at 4.5° through 20.5° Celsius (40° through 69° Fahrenheit).

B. Cold treatment is authorized for cut pine Christmas trees, pine nursery stock, and raw pine materials for pine wreaths and garlands as follows: The regulated articles must be loaded into a refrigeration unit and held at -20.6° Celsius (-5° Fahrenheit) for one hour; the period before the refrigeration unit reaches the specified temperature is not part of the treatment period.

C. Any one of these fumigation treatments is authorized for use on cut pine Christmas trees and raw pine materials for pine wreaths and garlands. Cut pine Christmas trees and raw pine materials for pine wreaths and garlands may be treated with methyl bromide at normal atmospheric pressure as follows:

Temperature	Dosage: lbs/1000 ft3	Exposure: hours	Concentration readings: ounces per 1000 ft3
			2.0 hrs.	3.0 hrs.	3.5 hrs.	4.0 hrs.
40-49°F	4.0	4.0	57	--	--	48
50-59°F	4.0	3.5	57	--	48	--
50-59°F	3.5	4.0	50	--	--	42
60°F +	4.0	3.0	57	48	--	--
60°F +	3.0	4.0	43	--	--	36

Historical Notes

Derived from Volume 20, Issue 09, eff. December 15, 2003.

Statutory Authority

§ 3.2-703 of the Code of Virginia.