Which of the following is treated as "special waste," requiring special handling such as pretreatment or corrosion-resistant piping before it reaches the sanitary system?
Not quite. The answer is A: Corrosive or chemically hazardous waste from a lab or industrial process
The UPC defines special wastes as wastes that need some special method of handling — indirect waste piping and receptors, corrosion-resistant piping, interceptors, condensers or other pretreatment. Corrosive or chemically hazardous waste from a lab or industrial process is the textbook case, and chemical wastes are discharged only in a manner the authority having jurisdiction approves. Ordinary lavatory wastewater and clear-water condensate need no such handling.
Reference: UPC 2021 Chapter 2 — Special Wastes; §811.7 (Special and chemical wastes)
Checked against the official text
Checked against the 2021 UPC text. Washington's exam is written against the 2015 edition, which we have not read for this section, so confirm it against your 2015 book.
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