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----------------------------------------------------------------------------- <br /> ********************** AERSCREEN MAXIMUM IMPACT SUMMARY ********************* <br /> ----------------------------------------------------------------------------- <br /> 3-hour, 8-hour, and 24-hour scaled <br /> concentrations are equal to the 1-hour concentration as referenced in <br /> SCREENING PROCEDURES FOR ESTIMATING THE AIR QUALITY <br /> IMPACT OF STATIONARY SOURCES, REVISED (Section 4.5.4) <br /> Report number EPA-454/R-92-019 <br /> http://www.epa.gov/scram001/guidance_permit.htm <br /> under Screening Guidance <br /> MAXIMUM SCALED SCALED SCALED SCALED <br /> 1-HOUR 3-HOUR 8-HOUR 24-HOUR ANNUAL <br /> CALCULATION CONC CONC CONC CONC CONC <br /> PROCEDURE (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) <br /> --------------- ---------- ---------- ---------- ---------- ---------- <br /> FLAT TERRAIN 5.137 5.137 5.137 5.137 N/A <br /> DISTANCE FROM SOURCE 153.00 meters <br /> IMPACT AT THE <br /> AMBIENT BOUNDARY 3.840 3.840 3.840 3.840 N/A <br /> DISTANCE FROM SOURCE 1.00 meters