4.2.3.2.Preservation Treatment of Wood

(1) Wood exposed to soil, rock or air above the lowest anticipated groundwater table shall be treated with preservative in conformance with CAN/CSA-O80 Series, “Wood preservation,” and the requirements of the appropriate standard as follows: (a) CAN/CSA-O80.1, “Specification of treated wood,” (b) CAN/CSA-O80.2, “Processing and treatment,” or (c) CAN/CSA-O80.3, “Preservative formulations.” (2) Wood treated as required in Sentence (1) shall be cared for as provided in Clause 4 of CAN/CSA-O80.0, “General requirements for wood preservation.”