Standard Lithium (TSX.V: SLI) (NYSE American: SLI) (FRA: S5L), a leading near-commercial lithium company, has started a drilling program at its South West Arkansas Lithium project. The drilling is supporting the upcoming preliminary feasibility study and will be used in relation to the resource definition as well as de-risking the resource estimate; the program will also provide key porosity and permeability data through the entire thickness of the productive zones in the Smackover Formation as well as optimize production-wellfield design. According to the company, the program will include two new locations along with three re-entries of preexisting plugged or abandoned oil and gas wells, which will likely be deepened in order to gather more data. “Since beginning the PFS work at our South West Arkansas Lithium Project last year, the team has been advancing numerous engineering and process studies, while simultaneously completing all the leases and permits required to start the drilling program,” said Standard Lithium president and COO Dr. Andy Robinson. “This systematic drilling program for both new wells and re-entries into pre-existing, plugged and abandoned wells will collect all necessary resource data for the forthcoming PFS as well as the majority of resource data for the subsequent Definitive Feasibility Study. Our ongoing engineering and costing work at phase 1A of our nearby LANXESS Property Project will also help inform the PFS. When complete, the PFS will provide an updated view of project feasibility and economics.”

To view the full press release, visit https://ibn.fm/9UB5A

About Standard Lithium Ltd.

Standard Lithium is a leading near-commercial lithium development company with a portfolio of projects in process. The company’s flagship projects, the LANXESS Property Project and the South West Arkansas Project, are located in southern Arkansas near the Louisiana state line. The company is focused on the evaluation and testing of commercial lithium extraction and purification from brine sourced from approximately 180,000 acres of leases across these two projects. The company operates a first-of-a-kind, industrial-scale Direct Lithium Extraction (“DLE”) Demonstration Plant at the LANXESS Property Project. The scalable, environmentally friendly process eliminates the use of evaporation ponds, reduces processing time from months to hours and greatly increases the effective recovery of lithium. A Definitive Feasibility Study (“DFS”) and Front-End Engineering Study (“FEED”) for phase 1A of the LANXESS Property Project commenced in September 2022. A Preliminary Feasibility Study (“PFS”) of the South West Arkansas Project commenced in May 2022. Standard Lithium is also pursuing the resource development of other projects in the Smackover Formation, as well as approximately 45,000 acres of mineral leases located in the Mojave Desert in San Bernardino County, California. For more information about the company, please visit www.StandardLithium.com.

NOTE TO INVESTORS: The latest news and updates relating to SLI are available in the company’s newsroom at https://ibn.fm/SLI

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