COLLINS PINE COMPANY OWNS AND OPERATES A WOOD-FIRED BOILER LOCATED NEAR CHESTER, CALIFORNIA. THE BOILER IS SUBJECT TO A PREVENTION OF SIGNIFICANT DETERIORATION (PSD) PERMIT ISSUED BY EPA IN 1984. AS INDICATED BY SOURCE TESTS CONDUCTED IN DECEMBER 1985 AND MAY 1990, COLLINS IS OPERATING IN VIOLATION OF THE PM EMISSION LIMITATION CONTAINED IN THE PSD PERMIT.