Underground Natural Gas Storage

• Q507. How do we report emissions from separate facilities that inject or withdraw gas from the same underground storage reservoir?
• Q508. Could EPA clarify that the natural gas stored in high pressure steel bottles at peak-shaving stations should NOT be considered an underground natural gas storage facility under Subpart W?
• Q509. What is the definition of "facility" for underground storage?
• Q510. If a company owns and operates an underground storage facility but the associated storage wellheads are owned jointly with a second company but operated by the second company, should the respective operators to submit separate emission reports?
• Q511. Why do natural gas storage facilities not have different emission factors for compressor and non-compressor components like those for the natural gas transmission segment.
• Q512. Does Subpart W require reporting of emissions during the salt dome mining process to create an underground natural gas storage facility or does reporting start only when natural gas is introduced for load balancing or storage?
• Q513. Subpart W Table W-4 has four sections in the final Federal Register publication. The first and third sections are both labeled "Leaker Emission Factors Storage Station, Gas Service" and both tables have an entry for "Open-ended Line".
• Q514. How should we report a facility that combines onshore petroleum and natural gas production and natural gas storage by injecting natural gas for the purposes of both enhanced oil recoveray and storage?
• Q515. Are dehydration units that are used to dehydrate natural gas extracted from underground storage included within the definition of underground natural gas storage facility?