Section 173-476-120. Ambient air quality standard for lead (Pb).

Latest version.

(1) Standard for lead. The three-month rolling average concentration of lead and its compounds in the ambient air must not exceed 0.15 μg/m3.

(2) Measurement method. The levels of lead in the ambient air must be measured by:

(a) A FRM based on 40 C.F.R. Part 50, Appendix G and designated according to 40 C.F.R. Part 53; or

(b) A FEM designated according to 40 C.F.R. Part 53.

(3) Interpretation method. The interpretation method found in 40 C.F.R. Part 50, Appendix R must be used.

[Statutory Authority: Chapter 70.94 RCW. WSR 13-24-010 (Order 12-05), § 173-476-120, filed 11/21/13, effective 12/22/13.]

Chapter 70.94 RCW. WSR 13-24-010 (Order 12-05), § 173-476-120, filed 11/21/13, effective 12/22/13.

                    
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