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SLI.V ·

Standard Lithium Commissions HUNT Guillot & Associates Llc FOR Engineering Services FOR Arkansas Pilot Plant

Metallurgy & Processing

STANDARD LITHIUM LTD.

Suite 835, 1100 Melville Street

Vancouver, British Columbia

V6E 4A6

NEWS RELEASE

STANDARD LITHIUM COMMISSIONS HUNT GUILLOT & ASSOCIATES LLC FOR

ENGINEERING SERVICES FOR ARKANSAS PILOT PLANT

June 14, 2018 – Vancouver, BC – Standard Lithium Ltd.(“Standard Lithium” or the “Company”)

(TSXV: SLL) (FRA: S5L) is pleased to announce that they have engaged Hunt Guillot & Associates

LLC (HGA) of Ruston, Louisiana, to provide engineering services for site preparation, utility

connections and brine supply/disposal pipeline connections at the Company’s Pilot Plant site location

in El Dorado, Southern Arkansas. HGA experts are very familiar with the plant location, and their

scope of work includes geotechnical investigations and civil infrastructure required to site the pilot

plant modules; design and tendering of any structures required to house and protect the pilot plant

infrastructure; all utility and brine pipeline interconnections; and pilot plant installation.

Dr. Andy Robinson, COO and President of Standard Lithium commented "Our engagement of HGA is

another key step accomplished in our goal to installing our full-scale, continuous Pilot Plant. The

location that has been selected for installation is ideal; utility and brine pipeline connections are

immediately adjacent, and we expect, that with HGA’s extensive experience in the region, installation

of the pilot plant will be a relatively straightforward process. Our process engineering team is now

full-swing in the design phase for the pilot and we look forward to observing the build-out of all the

pilot plant modules over the second half of 2018.”

Robert Mintak, CEO of Standard Lithium commented "With the engagement of HGA to provide site

engineering services, we demonstrate the continued execution of our development strategy. There are

many companies pursuing and proposing extraction technologies and process developments to unlock

lithium resources. We stand apart from the crowd, and have secured brine projects with permitted,

producing operators, have signed contracts to build and install our demonstration plant in Southern

Arkansas, and we are well funded to meet our development timelines.”

About Standard Lithium

Standard’s value creation strategy encompasses acquiring a diverse and highly prospective portfolio of

large-scale brownfield domestic brine resources, led by an innovative and results-oriented management

team with a strong focus on technical skills and modern brine processing technologies. The

Company’s flagship project is in southern Arkansas, where it is engaged in the testing and proving of

commercial viability of lithium extraction from 150,000+ acres of permitted brine operations and also

the resource development of 30,000+ acres of separate brine leases, both located in the Smackover

Formation. It is also engaged in the exploration and resource development of approximately 45,000

acres at the Bristol and Cadiz Dry Lake Lithium Projects located in the Mojave Desert, San Bernardino

County, California. All of Standard Lithium’s Project areas have significant infrastructure in-place,

with easy road and rail access, abundant electricity and water sources, and already permitted brine

extraction and processing operations.

Standard Lithium is listed on the TSX Venture under the trading symbol “SLL”; quoted on the

OTCQX under the symbol “STLHF”; and on the Frankfurt Stock Exchange under the symbol “S5L”.

Please visit the Company’s website atwww.standardlithium.com.

For further information, contact Anthony Alvaro at (604) 240 4793

About HGA

HGA is a leading multi-disciplined project management and engineering services company providing

professional services to the oil and gas, chemicals, refining, manufacturing and utilities industries. The

company’s 450-plus employees work in thirteen locations throughout Louisiana, Texas, New York,

and Alabama delivering the best solutions to its customers.

Visit www.hga-llc.com for project updates, employment opportunities, and solutions that fit your

business needs.

On behalf of the Board,

Standard Lithium Ltd.

Robert Mintak, CEO & Director

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies

of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

This news release may contain certain “Forward-Looking Statements” within the meaning of the

United States Private Securities Litigation Reform Act of 1995 and applicable Canadian securities

laws. When used in this news release, the words “anticipate”, “believe”, “estimate”, “expect”,

“target, “plan”, “forecast”, “may”, “schedule” and other similar words or expressions identify

forward-looking statements or information. These forward-looking statements or information may

relate to future prices of commodities, accuracy of mineral or resource exploration activity, reserves

or resources, regulatory or government requirements or approvals, the reliability of third party

information, continued access to mineral properties or infrastructure, fluctuations in the market for

lithium and its derivatives, changes in exploration costs and government regulation in Canada and the

United States, and other factors or information. Such statements represent the Company’s current

views with respect to future events and are necessarily based upon a number of assumptions and

estimates that, while considered reasonable by the Company, are inherently subject to significant

business, economic, competitive, political and social risks, contingencies and uncertainties. Many

factors, both known and unknown, could cause results, performance or achievements to be materially

different from the results, performance or achievements that are or may be expressed or implied by

such forward-looking statements. The Company does not intend, and does not assume any obligation,

to update these forward-looking statements or information to reflect changes in assumptions or

changes in circumstances or any other events affections such statements and information other than as

required by applicable laws, rules and regulations.

Readers are cautioned that a “Qualified Person” (as that term is defined by National Instrument 43-

101 – Standards of Disclosure for Mineral Projects) has not done sufficient work to specify any

mineral resource or reserve on the Properties.