Section 410 - SULFUR OXIDE STANDARDS410.1 It shall be unlawful for any person to cause or permit sulfur oxides to be emitted into the ambient air, calculated as sulfur dioxide, measured at an ambient air monitoring station averaged over the specified time periods to exceed: 410.11 2,096 micrograms per cubic meter (eight-tenths (0.800) ppm by volume) for any five (5) minute average, not to be exceeded more than once per year.410.12 1,048 micrograms per cubic meter (four-tenths (0.400) ppm by volume) average for any one (1) hour not to be exceeded more than once per year.410.13 655 micrograms per cubic meter (twenty-five one hundredths (0.250) ppm by volume) average for any one (1) hour not to be exceeded more than two (2) times in any consecutive seven (7) days.410.14 260 micrograms per cubic meter (one-tenth (0.100) ppm by volume) average for any one day (24 hours), not to be exceeded more than once per year.410.15 53 micrograms per cubic meter (two one-hundredths (0.020) ppm by volume) average for any one (1) year (annual arithmetic mean).410.2 Sampling and analysis to determine compliance with this Regulation shall be as outlined in Section 180 or equivalent as approved by the Control Officer or the WDOE. Wash. Admin. Code Northwest Clean Air Agency, 400, 410
AMENDED: October 13, 1982, April 14, 1993