TABLE 3. Job-Exposure Matrix, With Monitoring Data When Available, for Process Agents or Anticipated Byproducts Identified as Carcinogens Specifically Associated With the Diagnosed Diseases of Workers and Anticipated to Be Present in the Workers' Similar Exposure Groups.

Line	Similar Exposure Group	Agent*	Operation	Authors' Data
				GM, mg/m3	GSD	Range, mSv/h
C	SBA	Trichloroethylene	Normal
C	Marking	Trichloroethylene	Normal
C	Molding	Trichloroethylene	Normal
C	Tin plating	Trichloroethylene†	Normal	0.0214	1.58
C	TSF	Trichloroethylene	Normal
C	Tin plating	Trichloroethylene	Maintenance Task‡	0.537	1.0
C	All process areas	Ionizing radiation	Normal			1.6 × 10−5 to 2.8 × 10−4
C	QE inspection room§	Ionizing radiation	Normal			7.0 × 10−5 to 1.0 × 10−4
A	All process areas	Ionizing radiation	Normal			2.0 × 10−7 to 2.58 ×10−4

*Trichloroethylene use was discontinued in April 1995. No agents were identified for Line D. No monitoring data were provided by the company for these agents.

†All measurements are below the LOD, such that the GM and GSD are calculated using one-half the LOD for all results. For exposure reconstruction, modeled values were used rather than the concentrations measured by the authors.

‡Maintenance task of adding coating solution. Exposures estimates are based on task-duration monitoring.

§This room is reported separately as a case worked in this room performing a task that involved x-rays.

GM, geometric mean; GSD, geometric standard deviation; LOD, limit of detection; QE, quality engineering; SBA, Solder Ball Attach; TSF, Trim Sort Form.