Cal. Health & Safety Code § 25209.3

Except as provided in Section 25209.5, after January 1, 1990, unless granted a variance pursuant to subdivision (b) of Section 25209.2, or exempted pursuant to Section 25209.6, no person shall discharge hazardous waste into a land treatment unit which has not been equipped with liners, a leachate collection and removal system, a groundwater monitoring system, and a vadose zone monitoring system which satisfy the requirements of Section 25209.5.