California Code, Public Resources Code - PRC § 48007

(a) Recycled materials and inert waste removed from the waste stream and not disposed of in a solid waste landfill shall not be included for the purpose of assessing fees imposed pursuant to Section 48000.

(b) For purposes of this section, and only for the purpose of determining whether fees shall be imposed pursuant to Section 48000, “inert waste removed from the waste stream and not disposed of in solid waste landfills” includes the use, disposal, or placement of solely inert waste on property where surface mining operations, as defined in Section 2735, are being conducted, or have been conducted previously, as long as the use, disposal, or placement is for purposes of reclamation, as defined in Section 2733, pursuant to either of the following:

(c) For purposes of this section, “inert waste” means rock, concrete, brick, sand, soil, and cured asphalt only.  In addition, inert waste does not include any waste that meets the definition of “designated waste” as defined in Section 13173 of the Water Code or “hazardous waste” as defined by Section 40141.

(d) This section shall remain operative until the operative date of the regulations adopted by the board pursuant to Section 48007.5 and, as of the January 1 following that operative date, this section is repealed, unless a later enacted statute deletes or extends the dates on which it becomes inoperative and is repealed.