Data Inputs  Description  Source  Control  Equipment  Air pollution control equipment such as  activated  carbon  adsorption or  afterburner destruction of the vapors is  sometimes used in painting operations.  Information on the demonstrated effectiveness these control methods should be obtained from t airport  maintenance  section,  or  equi manufacturers.  Default emission factors for the VOC content (by volume) of common surface coatings are listed  in  Table A5-7  ( VOC Content of Common Surface Coatings ). These emission factors are also  embedded into FAA’s EDMS/AEDT.  Surface Coating  VOC Content (pound/gallon)  Paint (Solvent Base)  5.6  Paint (Water Base)  1.3  Enamel  3.5  Lacquer  6.1  Primer  6.6  Varnish/Shellac  3.3  Thinner  7.36  Adhesive  4.4  Table A5-7. VOC Content of Common Surface Coatings  Source:  Emissions and Dispersion Modeling System (EDMS) User’s Manual , FAA-AEE-07-01  (Rev. 10 – 06/07/13), June 2013,  http://www.faa.gov/about/office_org/headquarters_offices/apl/research/models/edms_model/media  /EDMS_5.1.4_User_Manual.pdf, and Jagielski, Kurt D., and Robert J. O'Brien, Calculation  Methods for Criteria Air Pollutant Emission Inventories, July 1994.  The purpose of airport de -icing and anti-icing operations is to ensure safe aircraft departures,  landings, and travel on airport grounds. Deicing operations remove snow and ice accumulations  from aircraft and airfield surfaces. Anti -icing operat ions prevent snow and ice accumulating on aircraft and airfield surfaces, either before accumulation can take place or after  a surface has been cleared by deicing operations. Aircraft de-icers and anti-icers typically contain  water and propylene glyco l or ethylene glycol which emit evaporative emissions application.  VOC emissions result from the application of deicing fluid to both aircraft and runways. stated previously, common aircraft deicing fluids are a mixture of water and propylene glycol or  ethylene glycol. These chemicals are slightly volatile and a small fraction of the chemical likely to evaporate after the deicing fluid is applied. Other chemicals present in runway deicing  fluids include urea and other organic and inorganic salts, most of which are unlikely to contribute  to VOC emissions.  A5.3.4  De-icing and Anti-icing Operations  A5.3.4.1  Methodology  38$_{ }$ APPENDIX A5$_{ }$