1. (1) You are required to submit the following metals information with your registration application:

   1. (a) Total concentration of each metal in each commercial fertilizer reported in parts per million (PPM) which is equivalent to milligrams of metal per kilogram of fertilizer (mg/kg), or micrograms per gram;
   2. (b) Copy of the laboratory report on total metals analysis;
   3. (c) Method of analysis;
   4. (d) Method of sample preparation; and
   5. (e) Minimum detection limits for each method used.
2. (2) The department may request quality assurance and quality control documentation for analytical procedures and/or for the laboratory which performed the analyses.
3. (3) The analytical data and maximum application rate will be used to determine if a commercial fertilizer meets or exceeds the Washington standards for metals.
4. (4) For all commercial fertilizers that have application rates on their labels, the maximum application rate shall be disclosed for each commercial fertilizer on the registration application form.

[Statutory Authority: RCW 15.54.325 and 15.54.800. WSR 99-08-037, § 16-200-7061, filed 3/31/99, effective 5/1/99. Statutory Authority: Chapter 15.54 RCW. WSR 99-02-035, § 16-200-7061, filed 12/30/98, effective 1/30/99.]