Cal. Public Resources Code - PRC § 42560. Section 42560.
“Recycled-content high grade, bleached printing and writing papers” means any of the following papers:
(a)
Offset printing, mimeograph, and duplicator paper.
(b)
Stationery, bond, and office paper.
(c)
High-speed copier paper.
(d)
Envelopes without plastic address windows.
(e)
Form bond, including computer paper and carbonless forms.
(f)
Book papers.
(g)
Ledger, cover stock, and cotton fiber papers having a secondary wastepaper, as defined in Section 42204, or postconsumer wastepaper, as defined in Section 42203, content of at least 50 percent by weight.