2-3105. Proficiency testing; samples; check; report; fees.
(1) Each laboratory shall be required by the department to participate in proficiency testing provided by an authorized proficiency testing service four times each calendar year. The authorized proficiency testing service shall require the laboratory to analyze at least three soil samples and one plant sample supplied quarterly by the authorized proficiency testing service. Each laboratory receiving check samples shall report check sample test results to the authorized proficiency testing service pursuant to the requirements of such service. The authorized proficiency testing service shall submit to the director all check sample test results. The director may require each laboratory to submit to the department a copy of the check sample test results reported to the authorized proficiency testing service. The director shall evaluate check sample test results submitted by each laboratory or the authorized proficiency testing service to determine if the laboratory's analysis is accurate within an acceptable range.
(2) When the department is the authorized proficiency testing service, the director shall fix and collect fees for the proficiency testing, which charges shall not exceed the cost of such testing.
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