Section Env-Wq 301.17 - Application of Criteria in Establishing Effluent Permit Limits(a) The effluent limits for bacteria and pH for all permits shall be applied at the end of the pipe with no allowance for dilution by the receiving water.(b) Subject to Env-Wq 301.18, all other applicable effluent limits shall be developed as follows: (1) Where the receiving water is a river or stream, the harmonic mean flow shall be used to develop effluent limits for all human health criteria for carcinogens;(2) Where the receiving water is a river or stream, the 7Q10 flow shall be used to develop monthly average and maximum daily effluent limits for aquatic life criteria for toxics, human-health criteria for non-carcinogens and for non-toxic pollutants, such as BOD; and(3) Where the receiving water is a tidal water, the flow condition for computing effluent permit limits for toxic substances and for non-toxic pollutants such as BOD shall be equivalent to the conditions that result in a dilution that is exceeded 99% of the time.N.H. Admin. Code § Env-Wq 301.17
(See Revision Note at part heading for Env-Wq 301) #10348, eff 5-22-13