100% recycled content copy paper required, as stated in King County's Sustainable Purchasing Executive Policy (CON 7-22-EP).

Recycled Content A. White copy paper shall contain a minimum of 100% post-consumer recycled content. 1. Minimum specification: Substance Weight: 20# Brightness: 90 or greater Opacity: 87 or greater Post-consumer Recycled Fiber: 100% B. Color copy paper shall contain a minimum of 30% post-consumer recycled content. 1. Colored stock includes: Blue, Buff, Canary, Cherry, Goldenrod, Gray, Green, Ivory, Lilac, Pink, Tan, Peach, Cream, and Salmon or like colors. 2. Minimum Specification: Substance W

Other papers made from non-wood fiber paper waste products are allowed and meet the policy requirements. Examples of this include TreeZero, a paper made from sugarcane waste.