38 M.R.S. § 591-B

1. Data requirements. A minimum of one year of acceptable on-site meteorological data is required for any modeling analysis. If more than one year of on-site data is available, all acceptable data must be used, up to a maximum of 5 years of data. If less than 5 consecutive years of acceptable on-site data is available, the source must continue to collect meteorological data to obtain an acceptable 5-year data base. Acceptable data means that the data meets the department's requirements based on the federal Environmental Protection Agency's guidelines on air quality models. [PL 1991, c. 384, §12 (NEW); PL 1991, c. 384, §16 (AFF).]

2. New data collection requirements. Once an acceptable on-site 5-year data base has been approved by the commissioner, it is acceptable for modeling purposes until: A. The department's requirements based on federal requirements for meteorological data change; [PL 1991, c. 384, §12 (NEW); PL 1991, c. 384, §16 (AFF).] B. Sufficient ambient air quality violations occur to make collection of additional meteorological data necessary; or [PL 1991, c. 384, §12 (NEW); PL 1991, c. 384, §16 (AFF).] C. The emission source configuration is significantly changed. [PL 1991, c. 384, §12 (NEW); PL 1991, c. 384, §16 (AFF).] [PL 1991, c. 384, §12 (NEW); PL 1991, c. 384, §16 (AFF).]