During the sewage processing test (§ 159.121) 40 effluent samples must be taken at the same time as samples are taken for § 159.126 and they must be analyzed for total suspended solids in accordance with 40 CFR Part 136. The arithmetic mean of the total suspended solids in 38 of 40 of these samples must be less than or equal to 150 milligrams per liter.
[CGD 75-213, 41 FR 15326, Apr. 12, 1976]
Title 33 published on 2013-07-01
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