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Solaris Submits Environmental Impact Assessment for Construction of Warintza; Announces Initial Steps to Emigrate to Ecuador

Mine Development & Operations Permits & Approvals

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Solaris Submits Environmental Impact Assessment for Construction of Warintza;

Announces Initial Steps to Emigrate to Ecuador

September 9, 2024 – Quito, Ecuador – Solaris Resources Inc . (TSX: SLS; NYSE: SLSR) (“Solaris” or the

“Company”) is pleased to report that it has submitted an Environmental Impact Assessment (“EIA”) to the

Ministry of Environment, Water and Ecological Transition (“MAATE”) for the construction of the Warintza

Project (“Warintza” or “the Project”) in southeastern Ecuador.

The EIA spans over 3,000 pages and represents the culmination of more than three and a half years of

dialogue, traditional learning, baseline environmental monitoring, data collection and studies. It is

compliant with Ecuadorean regulations, leading international practices, and aligns with the globally

recognized Equator Principles framework and Performance Standards on Environmental and Social

Sustainability promulgated by the International Finance Corporation.

This report builds on prior permitting, including an EIA and community consultations resulting in the

granting of an environmental license for advanced exploration in 2023 which facilitated significant site

infrastructure and Project development. To date, over US$170 million¹ has been invested in the Project,

with nearly 100% procurement through Ecuadorean supply chains and 55% from local cantons. The

Project employs over 500 people and is the only significant source of formal employment available locally

and one of the largest job creators in the region.

The EIA was prepared by ESSAM Cía. Ltda. (“ESSAM”), an accredited Ecuadorean environmental consulting

firm that has successfully completed several EIAs for mining projects in Ecuador, including the Mirador

copper mine 40km south of Warintza, and a series of Environmental Compliance Audits for the Fruta del

Norte gold mine south of that. ESSAM used input and technical data prepared by respected international

firms, particularly Knight Piésold Consulting, a recognized expert in tailings, waste, water and closure

design, and Ausenco, an expert in metallurgical studies and process plant design.

With the successful completion of this milestone, the Company has confirmed with its lender that the

second tranche of US$15 million will be drawn on its previously announced Offtake Credit Facility in the

coming days and remains well-funded with available liquidity of US$84 million. The next update on

permitting is expected with the technical approval of the EIA in H1/25.

Mr. Antonio Goncalves, Minister of Energy and Mines, commented, “The steady progress of the Warintza

Project is positive for Ecuador. The Project is advancing in compliance with all legal regulations and will

soon generate thousands of jobs and major economic growth in the Province of Morona Santiago. The

administration of President Daniel Noboa supports this type of mining Project – one that has the support

of the communities in its direct area of influence and is designed to meet high social, environmental, and

technical standards.”

Mr. Sixto Cóndor, Governor of Morona Santiago, commented, “Warintza is a project that will bring great

opportunities and impetus to the development of the province. Like the Mirador project, which I recently

visited, and its positive impacts in Zamora-Chinchipe, Warintza will be an engine for growth in Morona

Santiago, with more generation of local employment sources, revitalization of the economy, social

benefits, support for entrepreneurship, businesses and local suppliers. With Warintza, we will have a

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better province, with greater wealth to be distributed and better opportunities. We are ready to move

forward.”

Mr. Antonio Castillo, Mayor of Limón Indanza, commented, “The people of Limón Indanza have benefited

and will continue to benefit significantly through the creation of local employment and opportunities for

the canton's suppliers with the Warintza Project. The communities of Warints and Yawi decided to sign

an agreement with the Company, through the Strategic Alliance, for the advancement of the Project and,

as a Municipality, we respect and support this decision to work together.”

Mr. Javier Toro, Chief Operating Officer of Solaris , commented, "The submission of the EIA and

commencement of permitting for construction is a major milestone for the Warintza Project. We are very

grateful to all our supporters, and in particular to our host communities and the Advisory Board of the

Strategic Alliance of the Warintza Project who have been integral to the socialization of this EIA, the Mayor

of Limón Indanza, the Governor of the Province of Morona Santiago, and the diligent professionals at

MAATE.”

Initial Emigration Steps – Solaris is also pleased to announce initial steps towards aligning the Company

and its management with stakeholders and regulators in Ecuador as Warintza enters the permitting stage.

The Company is transitioning its head office to Quito, Ecuador, where certain of Solaris’ senior

management team will work from. Solaris is continuing to evaluate further steps to complete a greater

transition to Ecuador. The Company does not currently anticipate that any such further steps will pose

adverse tax consequences for the Company or require a change of stock exchange listings.

Endnotes

1. Refer to Management’s Discussion and Analysis for the six months ended June 30, 2024 on the

Company’s website.

On behalf of the Board of Solaris Resources Inc.

“Daniel Earle”

President & CEO, Director

For Further Information

Jacqueline Wagenaar, VP Investor Relations

Direct: 416-366-5678 Ext. 203

Email: [email protected]

About Solaris Resources Inc.

Solaris is advancing a portfolio of copper and gold assets in the Americas, which includes a world class

copper resource with expansion and discovery potential at its Warintza Project in Ecuador; a series of

grass roots exploration projects with discovery potential in Peru and Chile; and significant leverage to

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increasing copper prices through its 60% interest in the La Verde joint-venture project with a subsidiary

of Teck Resources in Mexico.

Cautionary Notes and Forward-looking Statements

This document contains certain forward-looking information and forward-looking statements within the meaning of

applicable securities legislation (collectively “forward-looking statements”). The use of the words “will” and

“expected” and similar expressions are intended to identify forward-looking statements. These statements include

statements that the second tranche of US$15 million will be drawn on its previously announced Offtake Credit Facility

in the coming days and the Company remains well-funded with available liquidity of US$84 million, The next update

on permitting is expected with the technical approval of the EIA in H1/25, the Company is transitioning its head office

to Quito, Ecuador, where certain of Solaris’ senior management team will work from, Solaris is continuing to evaluate

further steps to complete a greater transition to Ecuador, the Company does not currently anticipate that any such

further steps will pose adverse tax consequences for the Company or require a change of stock exchange listings.

Although Solaris believes that the expectations reflected in such forward-looking statements and/or information are

reasonable, readers are cautioned that actual results may vary from the forward-looking statements. The Company

has based these forward-looking statements and information on the Company’s current expectations and

assumptions about future events including assumptions regarding the exploration and technical programs,

permitting, that further emigration steps will be taken, and steps to emigrate to Ecuador. These statements also

involve known and unknown risks, uncertainties and other factors that may cause actual results or events to differ

materially from those anticipated in such forward-looking statements, including with respect to the Company’s future

strategic plans, and the risks, uncertainties and other factors identified in the Solaris Management’s Discussion and

Analysis, for the year ended December 31, 2023 available at www.sedarplus.ca. Furthermore, the forward-looking

statements contained in this news release are made as at the date of this news release and Solaris does not undertake

any obligation to publicly update or revise any of these forward-looking statements except as may be required by

applicable securities laws.