DEQ-CFW_00086194

9 2008 Air Emissions Inventory Supporting Documentation
Emission Source ID No.: I-9
Emission Source Description: Spray Paint Booths
Process and Emission Description:
The DuPont Company -Fayetteville Works has several small paint booths located throughout
the site. The function of these spray booths is to perform occasional painting of metal parts
using aerosol spray cans.
Basis and Assumptions:
The painting activity in these spray booths is very infrequent. Some spray paint booths are
used once or twice a year. However, for the purposes of this air emissions inventory, it will
be assumed that a extremely conservative high estimate exists:
(1) While most if not all of the paint spray booths are used less than one day per month, it
will be assumed that each spray booth has five (5) aerosol cans of paint emptied into
it each day, five days per week.
(2) Most commercial spray paints contain 60% to 65% VOC. However, for the purpose
0 of this report, it will be assumed that the paint is 100% VOC by weight.
(3) To account for the emission of hazardous air pollutants, it will be assumed that the
paint contains the highest concentration of the individual HAPs per the Material
Safety Data Sheets for Krylon and Rust-oleum paints.
Information Inputs and Source of Inputs:
Information Inputs
Source of Inputs
Total pounds of paint, VOC content, and
HAP content
Assumed conservative high estimates
Point Source Emissions Determination:
For the purpose of this report, it is assumed that all emissions are fugitive.
Equipment Emissions and Fugitive Emissions Determination:
For the purpose of this report, it is assumed that all emissions are fugitive.
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DEQ-CFW 00086194