B-1.1, r. 3 - Safety Code

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417. Where the analysis result indicates a Legionella pneumophila concentration equal to or greater than 10,000 CFU/L but below 1,000,000 CFU/L, the owner of the water cooling tower facility must
(1)  identify the causes of the increase in the Legionella pneumophila concentration;
(2)  apply corrective measures; and
(3)  verify the effectiveness of the corrective measures.
O.C. 454-2014, s. 4.