In 1988 Bowater undertook modifications to its power boilers numbered 1, 2, and 3, which would have required a Prevention of Significant Deterioration (PSD) permit. Instead, Bowater took emission limits to avoid the application of PSD in its permit No. 997215F issued on January 13, 1989, for sulfur dioxide (SO2) and nitrogen oxides (NOx) at the Bowater facility located in Calhoun, Tennessee. However, the limits for SO2 and NOx in this permit did not represent appropriate limits such that PSD would be avoided. EPA and Bowater have agreed to resolve this issue by changing the emission limits in Bowater's title V permit. The SO2 emissions will be reduced to 4,562 tons per year from 18,803.3 tons per year, and the NOX emission will be reduced to 2,214 tons per year from 3,189 tons per year.
In addition, Bowater is subject to the pulp and paper MACT requirements of 40 C.F.R. Part 63 Subpart S. In letters dated July 16, 2001, and November 21, 2001, Bowater provided a condensate collection calculation methodology, and indicated that due to process variability that a 21-day averaging period would be necessary to ensure compliance with the condensate collection requirement of 11.1 pounds of methanol per oven dried ton of pulp 63.446(c)(3). EPA had concerns with BowaterÂs condensate collection calculation methodology. EPA and Bowater have agreed to resolve this issue by revising the methodology to ensure only kraft pulping process condensates that are actually collected in