CA Health & Safety Code Section 117925

(a)

Each small quantity generator using onsite steam sterilization, incineration, or microwave technology to treat medical waste shall register with the enforcement agency. Small quantity generators owning or operating a medical waste treatment facility shall also apply for a permit for that treatment facility pursuant to Chapter 7 (commencing with Section 118130).

(b)

Small quantity generators using onsite treatment, as specified in subdivision (a), that operate as a business in the same building, or that are associated with a group practice in the same building, may register as one generator.

(c)

Small quantity generators using onsite treatment, as specified in subdivision (a), as specified in subdivision (b), operating in different buildings on the same or adjacent property, or as approved by the enforcement agency, may register as one generator.

(d)

“Adjacent,” for purposes of subdivision (c), means real property within 400 yards from the property boundary of the primary registration site.