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Table 1

Comparison of ECCC and AER methane regulations when fully implemented on Jan. 1, 2023. DOI: https://doi.org/10.1525/elementa.403.t1

FEDERAL (ECCC)†PROVINCIAL (ALBERTA)

EXISTINGNEW (after Jan. 2023)EXISTINGNEW (after Jan. 2022)

 
Venting Non-Crude bitumen batteries 1250 m3/mo (excl. pneumatic devices, compressor seals, glycol dehydrators) Overall Vent Gas (OVG) limit of 15000 m3/mo (incl. pneumatics etc. – see Figure 1) Defined Vent Gas (DVG) limit of 3000 m3/mo (excl. pneumatics etc. – see Figure 1) 
 Crude bitumen batteries  3000 m3/mo (fleet average excl. pneumatics, starting Jan. 2022) 
Pneumatics Instruments Manufacturer’s documented operational bleed rate must be ≤124.1 m3/mo (low bleed) Control to 85.5% destruction* or ≤124.1 m3/mo (low bleed) Control to 85.5% destruction* for 90% of installed pneumatics and ≤124.1 m3/mo (low bleed) 
 Level Controllers  If actuation period is <15 min: control to 85.5% destruction* or minimize transient venting or increase actuation period to >15 min Control to 85.5% destruction* for 90% of installed controllers and if actuation period is <15 min, minimize transient venting or increase to >15 min 
 Pumps 0 m3/mo for pumps > 20L methanol/day N/A Must not emit if operated >750 h 
Fugitive sources All facilities except isolated wells: LDAR @ 3/yr Sweet gas plants, comp. stations, gas gathering systems: LDAR @ 3/yr
Batteries (incl. on pad wells), sour gas plants, etc.: LDAR @ 1/yr
Well sites not on a facility pad: AVO @ 1/yr 
Compressors Centrifugal 29804 m3/mo (≤5 MW) 6136 m3/mo 7451 m3/mo 2484 m3/mo 
  14 902 m3/mo (<5 MW)    
 Reciprocating 1008 m3/mo/throw§ 44 m3/mo/throw§ 3652.5 m3/mo/throw (606 m3/mo/throw fleet average) 
Glycol dehydrators N/A 6633 m3/mo 3317 m3/mo 
FEDERAL (ECCC)†PROVINCIAL (ALBERTA)

EXISTINGNEW (after Jan. 2023)EXISTINGNEW (after Jan. 2022)

 
Venting Non-Crude bitumen batteries 1250 m3/mo (excl. pneumatic devices, compressor seals, glycol dehydrators) Overall Vent Gas (OVG) limit of 15000 m3/mo (incl. pneumatics etc. – see Figure 1) Defined Vent Gas (DVG) limit of 3000 m3/mo (excl. pneumatics etc. – see Figure 1) 
 Crude bitumen batteries  3000 m3/mo (fleet average excl. pneumatics, starting Jan. 2022) 
Pneumatics Instruments Manufacturer’s documented operational bleed rate must be ≤124.1 m3/mo (low bleed) Control to 85.5% destruction* or ≤124.1 m3/mo (low bleed) Control to 85.5% destruction* for 90% of installed pneumatics and ≤124.1 m3/mo (low bleed) 
 Level Controllers  If actuation period is <15 min: control to 85.5% destruction* or minimize transient venting or increase actuation period to >15 min Control to 85.5% destruction* for 90% of installed controllers and if actuation period is <15 min, minimize transient venting or increase to >15 min 
 Pumps 0 m3/mo for pumps > 20L methanol/day N/A Must not emit if operated >750 h 
Fugitive sources All facilities except isolated wells: LDAR @ 3/yr Sweet gas plants, comp. stations, gas gathering systems: LDAR @ 3/yr
Batteries (incl. on pad wells), sour gas plants, etc.: LDAR @ 1/yr
Well sites not on a facility pad: AVO @ 1/yr 
Compressors Centrifugal 29804 m3/mo (≤5 MW) 6136 m3/mo 7451 m3/mo 2484 m3/mo 
  14 902 m3/mo (<5 MW)    
 Reciprocating 1008 m3/mo/throw§ 44 m3/mo/throw§ 3652.5 m3/mo/throw (606 m3/mo/throw fleet average) 
Glycol dehydrators N/A 6633 m3/mo 3317 m3/mo 

Rules applicable to sites exceeding the “Potential to Emit” (PTE) threshold of having produced or received more than 60,000 m3 of gas in twelve preceding non-consecutive months.

Rules applicable to sites that vented, destroyed, or delivered >40,000 m3 of gas in the prior consecutive 12-month period, where venting volumes in any given month are considered if they pass this vent inclusion threshold (See SM, Section S4.2) The ECCC regulation specifies a vent limit of 15,000 m3/y, which is equivalent to 1250 m3/mo assuming all months meet the vent inclusion threshold.

* Control is defined as 95% destruction 90% of the time in operation, thus 90% × 95% = 85.5%.

§ Specified as per “per cylinder” in the ECCC regulation which is understood to be equivalent to “per throw”.

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