California Code of Regulations › Title 17 - Public Health › Division 3 - Air Resources › Chapter 1 - Air Resources Board › Subchapter 10 - Climate Change › Article 4 - Regulations to Achieve Greenhouse Gas Emission Reductions › Subarticle 13 - Greenhouse Gas Emission Standards for Crude Oil and Natural Gas Facilities › Section 95668 - Standards

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
The following standards apply at all times to
						  facilities in sectors listed in section
						  95666. The availability of an
						  exemption for any particular component or facility, or compliance with one of
						  the standards, does not exempt the owner or operator of a facility from
						  complying with other standards or requirements in other sections of this
						  subarticle.
(a)
Separator and
						Tank Systems
(1) Except as provided
						in section 95668(a)(2), the following requirements apply to separator and tank
						systems located at facilities in sectors listed in section
						95666.
(2) The requirements of section 95668(a) do
						not apply to the following, provided that an owner or operator maintains, and
						makes available upon request by the CARB Executive Officer, records necessary
						to verify compliance with the following provisions:
(A) Separator and tank systems that receive
						an average of less than 50 barrels of crude oil and condensate per day. The
						average daily production shall be determined using the annual production
						certified reports submitted to the California Department of Conservation
						Geologic Energy Management Division (CalGEM) and dividing by 365 days per
						year.
(B) Separator and tank
						systems used in non-associated gas production that receive an average of less
						than 200 barrels of produced water per day. The average daily production shall
						be determined using the annual production certified reports submitted to CalGEM
						and dividing by 365 days per year.
(C) Separator and tank systems that are
						controlled with either the use of a floating roof that meets the requirements
						of 40 CFR
						60.112b(a)(1) or (2)
						(October 8, 1997, which is incorporated herein by reference) or the use of a
						vapor collection system subject to a local air district rule. If the separator
						and tank system is controlled with the use of a floating roof or vapor
						collection system and is located in a region classified as non-attainment with
						any federal ambient air quality standard for ozone, the separator and tank
						system shall be subject to one of the following local air district rules for
						the exemption to apply:
1. San Joaquin Valley
						Air Pollution Control District Rule 4623: Storage of Organic Liquids (Amended
						June 15, 2023).
2. South Coast Air
						Quality Management District Rule 463: Organic Liquid Storage (Amended May 5,
						2023).
3. South Coast Air Quality
						Management District Rule 1178: Further Reductions of VOC Emissions from Storage
						Tanks at Petroleum Facilities (Amended September 1, 2023).
4. Ventura County Air Pollution Control
						District Rule 71.1: Crude Oil Production and Separation (Amended July 11,
						2023).
(D) Separator and
						tank systems that are controlled using a gas blanket system to protect tanks
						from corrosion.
(E) Separators,
						tanks, and sumps that have contained crude oil, condensate, or produced water
						for 45 calendar days or fewer per calendar year provided that the owner or
						operator maintains, and can make available at the request of the CARB Executive
						Officer, a record of the number of days per year in which the separators,
						tanks, or sumps have contained liquid.
(F) Tanks used for temporarily separating,
						storing, or holding liquids from any newly constructed well for up to 90
						calendar days following initial production from that well.
(G) Tanks used for temporarily separating,
						storing, or holding liquids from wells undergoing rework or inspection for up
						to 90 calendar days.
(H) Tanks that
						recover an average of less than 10 gallons per day of any petroleum waste
						product from equipment provided that the owner or operator maintains, and can
						make available at the request of the CARB Executive Officer, a record of the
						amount of liquid recovered. The average daily recovery shall be determined by
						using annual recovery and dividing by 365 days.
(I) Gauge tanks with a capacity of less than
						or equal to 100 barrels.
(3) Owners or operators of separator and tank
						systems that are not controlled for emissions with either the use of a vapor
						collection system as specified in section
						95671, or the use of a floating
						roof that meets the requirements of
						40 CFR
						60.112b(a)(1) or (2)
						(October 8, 1997), shall conduct annual flash analysis testing of the crude
						oil, condensate, or produced water processed, stored, or held in the system.
(A) For new separator and tank systems, the
						first annual flash analysis testing shall occur within 90 days of initial
						system startup.
(B) If the results
						of three consecutive years of test results show that the system has an annual
						emission rate of less than or equal to 10 metric tons per year of methane, the
						owner or operator may reduce the frequency of testing to once every five years.
1. If the testing frequency is reduced to
						once every five years, and if the annual crude oil, condensate, or produced
						water throughput (based on the calendar year as defined in Appendix C)
						increases by more than 20 percent above the throughput used to calculate annual
						emissions for the previous flash test, then the annual methane emissions shall
						be recalculated using the laboratory reports from previous flash analysis
						testing; and
2. The owner or
						operator shall maintain, and make available upon request by the CARB Executive
						Officer, a record of the revised flash emission calculation as specified in
						Appendix A, Table A1 and shall report the results to CARB as specified in
						section 95673 of this
						subarticle.
(4) Flash analysis testing shall be conducted
						as follows:
(A) Testing shall be conducted in
						accordance with the CARB Test Procedure for Determining Annual Flash Emission
						Rate of Gaseous Compounds from Crude Oil, Condensate, and Produced Water as
						described in Appendix C.
(B)
						Testing shall be conducted so that no crude oil, condensate, or produced water
						is diverted through a gauge tank that is open to the atmosphere and located
						upstream of the separator and tank system while testing is conducted.
(C) Calculate the annual methane emissions
						for the crude oil, condensate, and produced water using the test results
						provided by the laboratory.
(D) Sum
						the annual methane emissions for the crude oil, condensate, and produced
						water.
(E) Maintain a record of
						flash analysis testing as specified in section
						95672 and report the results to
						CARB as specified in section
						95673.
(F) The CARB Executive Officer may request
						additional flash analysis testing or information in the event that the test
						results reported do not reflect representative results of similar
						systems.
(G) An owner or operator
						may perform additional flash analysis testing within a single calendar year and
						use the average of all results within the calendar year to determine the annual
						emissions from the separator and tank system, provided that all test reports
						used in the averaging calculation are maintained and reported as specified in
						sections 95672 and
						95673 of this
						subarticle.
(5) Owners or
						operators of a separator and tank system with an annual emission rate greater
						than 10 metric tons per year of methane based on flash analysis testing,
						including emission rate recalculations pursuant to section 95668(a)(3)(B)1.,
						shall control the emissions from the separator and tank system and uncontrolled
						gauge tanks located upstream of the separator and tank system with the use of a
						vapor collection system as specified in section
						95671 within 180 days of
						conducting the flash analysis testing or completing the emission rate
						recalculation that first indicated an emission rate greater than 10 metric tons
						per year of methane.
(6) On or
						after July 1, 2024, if a separator and tank system is required to use a vapor
						collection system as specified in section
						95671 in order to control
						emissions, the owner or operator of that system shall comply with all
						applicable requirements in Appendix D. This requirement applies regardless of
						whether the system was controlled prior to or after July 1,
						2024.