Search

This report summarizes the results of an air quality modeling exercise for Stapleton International Airport. The analysis identifies the impact of automobiles and mini-buses on air quality at the airport. Concentrations of Carbon Monoxide were estimated at seven receptors placed at critical locations in the terminal area. The Graphical Input Microcomputer Model was used in this screening analysis. The following assumptions were used in the analysis: (1) vehicle activity = maximum; (2) wind speed = 1 meter per second; (3) wind directions = 270 and 240 degrees; (4) temperature = 0 degrees F; and (5) Pasquill/Gifford stability class was D . The maximum one hour concentration at the most critical receptor was 26 mg/m3. The one hour National Ambient Air Quality Standard for Carbon Monoxide is 40 mg/m3.

This is one of three reports describing the Emissions and Dispersion Modeling System (EDMS). All reports use the same main title--A MICROCOMPUTER MODEL FOR CIVILIAN AIRPORTS AND AIR FORCE BASES--but different subtitles. The subtitles are: (1) USER'S GUIDE - ISSUE 2 (FAA-EE-88-3/ESL-TR-88-54); (2) MODEL DESCRIPTION (FAA-EE-88-4/ESL-TR-88-53); (S) MODEL APPLICATION AND BACKGROUND (FAA-EE-88-5/ESL-TR-88-55). The first and second reports above describe the EDMS model and provide instructions for its use. This is the third report. IT consists of an accumulation of five key documents describing the development and use of the EDMS model. This report is prepared in accordance with discussions with the EPA and requirements outlined in the March 27, 1980 'Federal Register' for submitting air quality models to the EPA. Contents: Model Development and Use - Its Chronology and Reports; Monitoring Concorde EMissions; The Influence of Aircraft Operations on Air Quality at Airports; Simplex 'A' - A simplified Atmospheric Dispersion Model for Airport Use -(User's Guide); Microcomputer Graphics in Atmospheric Dispersion Modeling; Pollution from Motor Vehicles and Aircraft at Stapleton International Airport (Abbreviated Report).

This is one of three reports describing the Emissions and Dispersion Modeling System (EDMS). EDMS is a complex source emissions/dispersion model for use at civilian airports and Air Force bases. It operates in both a refined and a screening mode and is programmed for an IBM-XT (or compatible) computer. This report--MODEL DESCRIPTION--provides the technical description of the model. It first identifies the key design features of both the emissions (EMISSMOD) and dispersion (GIMM) portions of EDMS. It then describes the type of meteorological information the dispersion model can accept and identifies the manner in which it preprocesses National Climatic Center (NCC) data prior to a refined model run. The report presents the results of running EDMS on a number of different microcomputers and compares EDMS results with those of comparable models. The appendices elaborate on the information noted above and list the source code. Keywords: Pollution, Air pollution, Dispersion model, Emissions model, Data base, Microcomputers, Computer simulation, Mathematical models., See also rept. nos. FAA-EE-88-3 and FAA-EE-88-5.

Over the past five years, the Federal Aviation Administration and the United States Air Force have developed a number of user-friendly emissions and dispersion models for air quality assessment purposes. The first, Simplex A was completed in July 1981. The second, called Emissions and Dispersion Modeling System (EDMS), has just been completed and this report constitutes its User's Guide. First, this User's Guide shows how the EDMS system evolved from the earlier, more complex AVAP and AQAM systems. Then, it identifies the hardware and software required to run the system and provides instructions on how to add, delete or change standard information. Finally, through a 125-step example problem, it instructs the user on how to input and process data to produce: (1) an emissions inventory of all sources at an airport/airbase, and (2) an estimate of the concentrations of these sources at specified locations. An inexperienced user should be able to process the example problem in less than three hours. Keywords: Menu flow; and Flow charting. (Author)

Procedures are described for the purification of streptokinase and human plasmin. Molecular weights of 42,600 for streptokinase and 88,800 for plasmin were determined from sedimentation and diffusion data. Equilibration of strep to kinase with plasmin produced an inhibition of caseinolytic activity and indicated a mole-mole interaction. The inhibitory activity was lost following acid treatment. These findings further support the concept of an interaction between human plasmin and streptokinase to form a com plex capable of converting plasminogen to plasmin. (Author)