B-1.1, r. 2 - Construction Code

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8.38. The tests required by section 8.35 need not be conducted if the contractor or owner-builder
(1)  ascertains that depressurization of at least 42 kPa created by the manufacturer in the interstitial space of the tank is maintained after it has been placed in the excavation; or
(2)  has conducted a vacuum test on the interstitial space at a pressure of at least 42 kPa for at least one hour, if such a test is authorized by the manufacturer.
O.C. 220-2007, s. 1.