Section 129-2-002 - Total reduced sulfur (TRS)002.01 Except as provided in 002.01A and 002.01B these standards apply: Level: 10.0 parts per million (10.0 ppm)
Averaging time: 1 minute
Form: Maximum average concentration
Level: 0.10 parts per million (0.10 ppm)
Averaging time: 30-minutes
Form: Maximum rolling average
002.01A Ambient air concentrations of TRS emissions occurring as a result of natural activities that have no associated economic benefits will not constitute a violation of the standards contained in Section 002.002.01B The Department may allow any source causing or contributing to a violation of the standards in Section 002 to develop and implement a program to eliminate such emissions causing a violation.002.02 Unless otherwise approved by the Director, TRS in the ambient air will be measured using a TRS thermal converter in conjunction with an SO2 monitor. Only an SO2 monitor that has been designated as an EPA reference method or equivalent method in accordance with 40 CFR Part 53 may be used. When used in combination with a thermal converter, the SO2 monitor will meet or exceed the performance limit specifications for automated methods prescribed in 40 CFR Part 53 Subpart B.002.03 A rolling average will be considered valid if there is data for at least 75 percent of the period in question. In the event that less than 100 percent of the data are available, the rolling average will be computed on the basis of the data available using the number of data available as the divisor.002.04 The standards are attained when all of the following conditions are met:002.04A The one-minute concentration is less than or equal to 10.0 ppm, rounded to one decimal place (fractional parts equal to or greater than 0.05 ppm will be rounded up);002.04B The 30-minute rolling arithmetic mean concentration is less than or equal to 0.10 ppm, rounded to two decimal places (fractional parts equal to or greater than 0.005 ppm will be rounded up).129 Neb. Admin. Code, ch. 2, § 002
Amended effective 9/28/2022