of protective coatings, metal cleaning and degreasing, dry cleaning, and printing. Based on the assumption that 100 percent of the solvents used ultimately reach the atmosphere, total solvent emissions are approximately 24,000 tons per year, or approximately 7 percent of the hydrocarbons emitted in the Study area.

Evaporation of gasoline from stationary sources was also included in this category. Bulk storage tanks predominately have floating roofs, however, fixedroof storage accounts for evaporation of over 7,000 tons per year. Other gasoline evaporation amounts to approximately 5,000 tons per year.

REFERENCES

1.

Fuels and electric energy consumed in manufacturing industries: 1962-1963 census of manufactures. MC63(1)-7. U. S. Bureau of Census. U. S. Government Printing Office. Washington 25, D. C. pp. 68-69.

2.

Steam electric plant factors, National Coal Association. 15th ed. National
Coal Association. 1130 17th St., N. W. Washington, D. C. Sept. 1965.

3.

4.

5.

U. S. Census of Housing - 1960. Vol. 1 report HC(1). U. S. Bureau of
Census. U. S. Government Printing Office. Washington 25, D. C. 1962.
Mullen, J. W. Personal communication. National Coal Association.
17th St., N. W.

Washington, D. C. Aug. 22, 1963.

1130

Blade, O. C. Burner fuel oils. Mineral Industry Surveys. U. S. Bureau of
Mines. 1961.

7.

Municipal refuse disposal.

8.

9.

10.

11.

12.

13.

14.

15.

16.

Shell, American, Standard and Mobil Oil Refineries.
Nov. 1965.

American Public Works Association. Public
Administration Service. Washington, D. C. 1961.

P. 24.

Solid waste disposal study for St. Louis County, Missouri. Horner and
Shifrin. St. Louis, Mo.

Retail trade Missouri. 1963 Census of Business. U. S. Bureau of the
Census. U. S. Government Printing Office. Washington 25, D. C. 1964.

Retail trade Illinois. 1963 Census of Business. U. S. Bureau of the Census.
U. S. Government Printing Office. Washington 25, D. C. 1964.

Petroleum facts and figures. American Petroleum Institute. 1271 Avenue of the Americas. New York, N. Y. 1963. p. 152.

Vogelsang. Personal communication. St. Louis City Comptroller's Office.

Mayer, M. A compilation of emission factors for combustion process gasoline
evaporation and selected industrial processes. Tech. Rep. Division of Air
Pollution. R. A. Taft Sanitary Engineering Center. U. S. Public Health
Service. Cincinnati, Ohio. May 1965.

Motor truck facts. Automobile Manufacturers Association, Inc. Detroit,
Mich. 1964.

Civil Aeronautics Board, Federal Aviation Agency. Airport activity statistics of certified route air carriers. June 1963.

Personal communication. U. S. Army Corps of Engineers. St. Louis District
Office. St. Louis, Mo. May 15, 1964.

The emission factors in this report were prepared after a thorough investigation of previous work by personnel of the Technical Assistance Branch, Division of Air Pollution. At the time of publication these factors are the best available for use in air pollution emission inventories. As technical advances are made in this area, these factors may in time become obsolete. Before these factors are used for other studies, careful attention should be paid to developments in the field to determine whether the emission factors have been up-dated.

Emission factors utilized in the Interstate Air Pollution Study are listed in Tables A-1 through A-17. The references cited are given at the end of the Appendix.

bDensity of fuel oil equals 8 lb/gal, and 42 gal = 1 barrel.

Table A-5. INCINERATION OF REFUSE (pounds/ton of refuse burned)

Pollutants

Municipala

Industrial and

commercial

Domesticc
Single chamber

multiple Single Multiple Without auxiliary With auxiliary chamber gas burning

chamber chamber

gas burning

2

nad nad