EMISSION INVENTORY SOURCE CATEGORY

METHOD SUMMARY

This category includes the organic gas emissions for 1989 from thinning solvents used with industrial surface coatings. The industrial thinning and cleaning solvent category includes the use of thinners used for dopes, lacquers, and oleoresinous thinners.

ACTIVITY DATA SOURCE: The 1982 national use of thinning and cleaning solvents was obtained from the Bureau of the Census report, "1982 Census of Manufacturers, Paint and Allied Products" (June 1984). These data were grown to 1983 based on the percent increase of product coatings used in manufacturing, obtained from another Bureau of the Census report, "Current Industrial Reports - Paint, Varnish, and Lacquer" (January 1984). California's portion was determined based on the ratio of California population to that of the nation. Next, California's usage was adjusted by subtracting out architectural thinners and solvents. Statewide usage was then distributed to Bureau of Economic Analysis (BEA) districts based on the BEA economic index for manufacturing. Finally, the usage within each BEA district was distributed to counties based on population. The estimates have been updated from 1983 to 1987 using growth factors from ARB's forecasting system.

EMISSION FACTOR SOURCE: The emission factor for industrial thinners and solvents is based on data from an ARB document, "Consideration of Model Organic Solvent Rule Applicable to Architectural Coatings" (June 1977).

TEMPORAL DATA:

	Daily Activity:	Uniform occurs during two working shifts 8:00 a.m. to midnight.
	Weekly Activity:	The weekly activity is Monday through Friday.
	Monthly Activity:	The activity is uniform throughout the year.

DATE OF THE LAST UPDATE: September 1991

GROWTH PARAMETER: Dollar output for manufacturing industries (SICs 20-39).

STATEWIDE EMISSIONS SUMMARY (1989 - ANNUAL AVERAGE TONS/DAY)

CES No.	TOG	CO	NOX	SOX	PM
83295	4.65	0.00	0.00	0.00	0.00

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This page last revised on June 1, 2006

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