SITE DATA:
Location: ROSEBURG, OREGON
Building Air Exchanges Per Hour: 0.86 (sheltered single storied)
Time: July 13, 2015 1825 hours PDT (user specified)
CHEMICAL DATA:
Chemical Name: METHYL FORMATE Molecular Weight: 60.05 g/mol
PAC-1: 150 ppm PAC-2: 830 ppm PAC-3: 5000 ppm
IDLH: 4500 ppm LEL: 52000 ppm UEL: 230000 ppm
Ambient Boiling Point: 31.3° C
Vapor Pressure at Ambient Temperature: greater than 1 atm
Ambient Saturation Concentration: 1,000,000 ppm or 100.0%
ATMOSPHERIC DATA: (MANUAL INPUT OF DATA)
Wind: 11 miles/hour from 5° true at 3 meters
Ground Roughness: open country Cloud Cover: 5 tenths
Air Temperature: 35° C Stability Class: D
No Inversion Height Relative Humidity: 50%
SOURCE STRENGTH:
Evaporating Puddle (Note: chemical is flammable)
Puddle Area: 100 square meters Puddle Volume: 50 cubic meters
Ground Type: Concrete Ground Temperature: 31° C
Initial Puddle Temperature: Ground temperature
Release Duration: ALOHA limited the duration to 1 hour
Max Average Sustained Release Rate: 390 kilograms/min
(averaged over a minute or more)
Total Amount Released: 6,449 kilograms
THREAT ZONE:
Model Run: Heavy Gas
Red : 98 meters --- (5000 ppm = PAC-3)
Orange: 309 meters --- (830 ppm = PAC-2)
Yellow: 827 meters --- (150 ppm = PAC-1)
THREAT AT POINT:
Concentration Estimates at the point:
Downwind: 3.5 kilometers Off Centerline: 0.59 kilometers
Max Concentration:
Outdoor: 0.0284 ppm
Indoor: 0.00542 ppm