020-11 Wyo. Code R. § 11-49
(a) "Overland flow land application system" is a system in which treatment is accomplished by the application of wastewater to a sloping, largely impermeable site. Treatment mechanisms include filtration, sedimentation, microbial oxidation, and crop uptake. Typical application rates range from 0.0392-0.3136 yd3/yd/hr.
(b) "Primary treatment level" (as related to pathogenic organism reduction) is that level of fecal coliform reduction (a minimum of 25 percent reduction) achievable by primary sedimentation in single cell discharging lagoons operated within the limits described in Part B, Section 13(c).
(c) "Biosolids" are solid, semi-solid, or liquid residue generated during the treatment of domestic sewage in a treatment works. Biosolids include, but are not limited to, domestic septage; scum or solids removed in primary, secondary, or advanced wastewater treatment processes; and a material derived from biosolids. Biosolids do not include ash generated during the firing of biosolids in a biosolids incinerator or grit and screenings generated during preliminary treatment of domestic sewage in a treatment works.
020-11 Wyo. Code R. § 11-49
Amended, Eff. 6/29/2018.