Use of biochar in public works projects.
RCW 43.19A.140
in effect(1) When planning government-funded projects that are public works, or soliciting and reviewing bids for such projects, all state agencies and local governments shall consider whether biochar products can be utilized in the project. (2) If biochar products can be utilized in the project, the state agency or local government must use biochar products, except as follows: (a) A state agency or local government is not required to use biochar products if: (i) Biochar products are not available within a reasonable period of time; (ii) Biochar products that are available do not comply with existing purchasing standards; (iii) Biochar products that are available do not comply with federal or state health, quality, and safety standards; or (iv) Biochar purchase prices are not reasonable or competitive; and (b) A state agency is not required to use biochar products in a project if: (i) The total cost of using biochar is financially prohibitive; (ii) Application of biochar will have detrimental impacts on the physical characteristics and nutrient condition of the soil as it is used for a specific crop; or (iii) The project consists of growing trees in a greenhouse setting, including seed orchard greenhouses. (3) For the purposes of this section, "biochar" means a carbon-rich material produced during the pyrolysis process or solid material obtained from the thermochemical conversion of biomass in an oxygen-limited environment, derived from biomass waste materials including forest, agricultural, yard, urban wood, food, and biosolid residuals.
(1) When planning government-funded projects that are public works, or soliciting and reviewing bids for such projects, all state agencies and local governments shall consider whether biochar products can be utilized in the project.
(2) If biochar products can be utilized in the project, the state agency or local government must use biochar products, except as follows:
(a) A state agency or local government is not required to use biochar products if:
(i) Biochar products are not available within a reasonable period of time;
(ii) Biochar products that are available do not comply with existing purchasing standards;
(iii) Biochar products that are available do not comply with federal or state health, quality, and safety standards; or
(iv) Biochar purchase prices are not reasonable or competitive; and
(b) A state agency is not required to use biochar products in a project if:
(i) The total cost of using biochar is financially prohibitive;
(ii) Application of biochar will have detrimental impacts on the physical characteristics and nutrient condition of the soil as it is used for a specific crop; or
(iii) The project consists of growing trees in a greenhouse setting, including seed orchard greenhouses.
(3) For the purposes of this section, "biochar" means a carbon-rich material produced during the pyrolysis process or solid material obtained from the thermochemical conversion of biomass in an oxygen-limited environment, derived from biomass waste materials including forest, agricultural, yard, urban wood, food, and biosolid residuals.
Source: WA Statutes (Official Site)URL: https://app.leg.wa.gov/RCW/default.aspx?cite=43.19A&full=trueFetched: 6/29/2026