The following sections concerning the protection of groundwater, labeling requirements and examination of fertilizer minerals and limes (WAC 16-200-708 through 16-200-742) are established in this chapter under the authority of the Commercial Fertilizer Act, chapter 15.54 RCW.

This chapter also describes the requirements for registration of commercial fertilizers, including the information which must be submitted as part of the registration application, the sample preparation and analysis methods which must be used, the maximum application rates the department will use to determine whether a commercial fertilizer may be registered, the Washington standards for metals (in pounds per acre per year), and the acts which are unlawful under this chapter.