How do petroleum remedial systems show compliance with Env-A 1400?
Remedial systems that vent petroleum fumes to the air are non-exempt sources and are therefore subject to the rule. Gasoline (CAS #8006-61-9) is an RTAP. Any facility that emits gasoline into the ambient air must not cause an exceedance of the gasoline AAL at or beyond the property line of the facility. Note that individual compounds present in gasoline (e.g. benzene, toluene, etc.) need not be evaluated if only gasoline is being emitted. For sites with additional contaminants, additional evaluations may be necessary. DES has conducted a study of typical remedial systems that vent petroleum fumes in order to simplify the compliance determination process. The results of this study show that remedial systems that vent petroleum fumes are in compliance with the provisions of Env-A 1400 provided they meet all of the following criteria • The exhaust stack is vertical and has no chimney cap; • The minimum exhaust velocity is 25 meters per second; and • The maximum concentration of gasoline v
Remedial systems that vent petroleum fumes to the air are non-exempt sources and are therefore subject to the rule. Petroleum distillate (CAS #8002-05-9) is an RTAP. Any facility that emits petroleum distillate into the ambient air must not cause an exceedance of the petroleum distillate AAL at or beyond the property line of the facility. Note that individual compounds present in petroleum distillate (e.g., pentane, heptane, etc.) need not be evaluated if only petroleum distillate is being emitted. For sites with additional contaminants, additional evaluations may be necessary. Acceptable methods for measuring petroleum distillate concentrations in the exhaust stream for comparison with Env-A 1400 standards include: • Collection of discrete air samples (e.g., using Tedlar bags) from the exhaust and conducting laboratory analysis for total petroleum hydrocarbons (TPH). Alternatively, a sum of BTEX (benzene, toluene, ethyl benzene and xylene) concentration can be used if TPH is not analy
