38 M.R.S. §591-B: Meteorological data collection

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.

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;

B. Sufficient ambient air quality violations occur to make collection of additional meteorological data necessary; or

C. The emission source configuration is significantly changed.