B-1.1, r. 2 - Construction Code

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8.182. An aboveground tank must be sited so that the distance between the dike centre line and the airport complex is not less than 45 m.
In the case of double-walled tanks or contained tank assemblies, that distance must be measured between the outer tank shell or secondary containment and airport complex.
O.C. 220-2007, s. 1.