Valero Refining Company- Issuance of an Alteration Permit to Operate for the installation of piping and fugitive components at S-1010 Hydrogen Plant -AN714083

This permit action was to issue a Permit to Operate for alterations to S-1010 Hydrogen Plant). The application scope includes the installation oftie-in connections (piping and fugitive components) to route the atmospheric vents from the S-1010 to the base of the existing North Flare (S-19) to comply with Air District Regulation 13, Rule 5. S-1010 continues to have the capability to process petroleum-based feedstocks and the hydrogen production rate remains the same at 164 million standard cubic feet per day. The application did not involve any changes resulting in pump capacity increases, changes to compressors, or changes to upstream or downstream equipment that would result in any increases in capacities or emissions (other than fugitive component emissions at S-1010). Fugitive emissions from S-1010 will increase by less than 10 pounds per day and fugitive toxic air contaminant (TAC) emissions will not exceed Regulation 2, Rule 5 trigger levels. This level of emissions increase fits within the exemption provided by Regulation 2, Rule 1, Section 128.21. Due to the change in the method of operation and the corresponding increase in fugitive component emissions that are not considered a modification per Regulation 2, Rule 1, Section 234, S-1010 is considered altered. The fugitive emissions from this project are not subject to BACT or Offsets within the bounds of this application under Regulation 1, Section 115, but the facility will be required to implement BACT Technology for the fugitive components per Regulation 2, Rule 1, Section 128.21. Changes to the facility's overall Potential to Emit will be accounted for in future applications.