Iowa AWMA Air Permit Workshop Stack Testing Basics Dan Despen Interpoll Laboratories, Inc.
Transcript of Iowa AWMA Air Permit Workshop Stack Testing Basics Dan Despen Interpoll Laboratories, Inc.
Iowa AWMAIowa AWMAAir Permit WorkshopAir Permit Workshop
Stack Testing BasicsStack Testing Basics
Dan DespenDan Despen
Interpoll Laboratories, Inc.Interpoll Laboratories, Inc.
AgendaAgenda
The BasicsThe Basics• EPA Method 1: Testing LocationEPA Method 1: Testing Location• EPA Method 2: Volumetric FlowEPA Method 2: Volumetric Flow• EPA Method 3: Gas CompositionEPA Method 3: Gas Composition• EPA Method 4: Moisture DeterminationEPA Method 4: Moisture Determination
Agenda, Cont’dAgenda, Cont’d
The Pollutants:The Pollutants:• EPA Method 5:EPA Method 5: ParticulateParticulate• EPA Method 202: EPA Method 202: Condensable PMCondensable PM• EPA Method 7E: EPA Method 7E: Oxides of NitrogenOxides of Nitrogen• EPA Method 10: EPA Method 10: Carbon MonoxideCarbon Monoxide• EPA Method 25A: EPA Method 25A: VOC as carbonVOC as carbon
EPA Method 1EPA Method 1
Sample and velocity traverses for Sample and velocity traverses for stationary sourcesstationary sources
Very critical to successful testingVery critical to successful testing Includes only basic flow Includes only basic flow
considerations, need to add:considerations, need to add:• SafetySafety• AccessAccess• Space (“elbow room”)Space (“elbow room”)
Method 2Method 2
Determination of Volumetric Flow Determination of Volumetric Flow RateRate• DSCFMDSCFM• ACFMACFM
Average TemperatureAverage Temperature Average Velocity PressureAverage Velocity Pressure Absolute Pressure (Pb + Ps)Absolute Pressure (Pb + Ps)
Method 3Method 3
Used to determine the molecular Used to determine the molecular weight of the gas stream (Ref. EPA weight of the gas stream (Ref. EPA Method 2)Method 2)
Also for determining the oxygen or Also for determining the oxygen or carbon dioxide content of the gas carbon dioxide content of the gas stream (as in a diluent, or CEM stream (as in a diluent, or CEM measurement case)measurement case)
Method 4Method 4
Used to determine the moisture Used to determine the moisture content of the gas streamcontent of the gas stream
Enters into the determination of wet Enters into the determination of wet molecular weight (EPA Method 2)molecular weight (EPA Method 2)
Used to calculate dry standard cubic Used to calculate dry standard cubic feet (DSCF) from Actual (ACFM)feet (DSCF) from Actual (ACFM)
Method 5Method 5
Used to determine the particulate Used to determine the particulate concentration of the gas streamconcentration of the gas stream
EPA Method 5 only determines the EPA Method 5 only determines the “dry” fraction – that which is “dry” fraction – that which is considered filterableconsidered filterable
Includes the material captured in the Includes the material captured in the probe and on the filterprobe and on the filter
EPA Method 202EPA Method 202
Used to determine the condensable Used to determine the condensable fraction of particulate matterfraction of particulate matter
Erroneously referred to as:Erroneously referred to as:• OrganicOrganic• InorganicInorganic
Really the differentiation is the Really the differentiation is the polarity of the material collectedpolarity of the material collected• Methylene chloride is the differentiating Methylene chloride is the differentiating
solvent (note: NOT very polar)solvent (note: NOT very polar)
Method 5
Filter and Probe Rinse Weight Analysis
11.2.1 (Filter)
Constant Weight (g) 0.0005
11.2.2 (Probe Wash)
Constant Weight (g) 0.0005
Total Mass (g) 0.0010
(GR) 0.0154
Volume Sampled (DSCF) 30
“Particulate” Concentration (GR/DSCF) 0.0005
Method 5 Detectable Level (GR/DSCF) 0.0051
(Ten times the “error”)
Concerns regarding “dual” limits:Concerns regarding “dual” limits:
Permit has both (LB/HR) & (GR/DSCF)Permit has both (LB/HR) & (GR/DSCF)
(LB/HR) = (GR/DSCF)(DSCF/HR)(LB/7000GR)(LB/HR) = (GR/DSCF)(DSCF/HR)(LB/7000GR)
(LB/HR) frequently modeled, but (GR/DSCF) is the (LB/HR) frequently modeled, but (GR/DSCF) is the measured quantitymeasured quantity
As an example, a well functioning baghouse will As an example, a well functioning baghouse will have approximately the same lb/hr at variable air have approximately the same lb/hr at variable air flows, but the GR/DSCF will vary with dilution.flows, but the GR/DSCF will vary with dilution.
Method 7E, 10Method 7E, 10
7E is for the determination of oxides 7E is for the determination of oxides of nitrogen (NOx)of nitrogen (NOx)
10 is for the determination of carbon 10 is for the determination of carbon monoxide (CO)monoxide (CO)
Both are typically performed real-Both are typically performed real-time using instrumentationtime using instrumentation
May May
Method 25AMethod 25A
Determination of Total Gaseous Determination of Total Gaseous Organic Concentration using a Flame Organic Concentration using a Flame Ionization DetectorIonization Detector
General (“whole”, “Total”) Volatile General (“whole”, “Total”) Volatile Organic Compound (VOC)Organic Compound (VOC)
Uses propane or methane standardsUses propane or methane standards Gross carbon counterGross carbon counter Does not see formaldehydeDoes not see formaldehyde