Section 410IAC6-10.1-13. "Design daily flow" or "DDF" defined  


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  •    "Design daily flow" or "DDF" means the calculated peak daily sewage flow from a commercial facility used to design a commercial on-site sewage system. (Indiana State Department of Health; 410 IAC 6-10.1-13; filed Oct 19, 2012, 2:07 p.m.: 20121114-IR-410120157FRA)