OAR 340-073-0075: Non-water-Carried Waste Disposal Facilities, Materials, and Construction: Self-Contained Nonwater-Carried Toilet Facilities

(1) General Standards. All self-contained, nonwater-carried toilet facilities must comply with the following requirements. (a) They must have water-tight chambers constructed of reinforced concrete, plastic, fiberglass, metal, or other material of acceptable durability and corrosion resistance, approved by DEQ, and designed to facilitate the removal of the wastes. (b) Black wastes must be stored in an appropriate chamber until removal for final treatment elsewhere. Wastes must be removed from the chamber whenever necessary to prevent overflow. (c) Chemicals containing heavy metals such as copper, cadmium, and zinc, must not be used in self-contained toilet facilities. (d) All surfaces subject to soiling must be impervious, easily cleanable, and readily accessible. (2) Vault Toilet Facilities. (a) The capacity of vaults must be at least 350 gallons or, in places of employment, 100 gallons per seat. (b) Caustic must be added routinely to vault chambers to control odors. (3) Chemical Toilet Facilities. (a) Toilet bowls must be constructed of stainless steel, plastic, fiberglass, ceramic, or other material approved by DEQ. (b) Waste passages must have smooth surfaces and be free of obstructions, recesses, or cross braces that would restrict or interfere with flow of black wastes. (c) Biocides and oxidants must be added to waste detention chambers at rates and - intervals recommended by the chemical manufacturer and approved by DEQ. (d) Chambers and receptacles must provide a minimum storage capacity of 50 gallons per seat. (e) Portable shelters housing chemical toilets must display the business name of the licensed sewage disposal service that is responsible for servicing them.