Atlas Technical Consultants : Second Quarter 2021 Earnings Presentation

SECOND QUARTER 2021

EARNINGS PRESENTATION

August 16, 2021

FORWARD LOOKING STATEMENTS

The statements contained in this presentation that are not purely historical are forward-looking statements and involve a number of risks and uncertainties. Our forward-looking statements include, but are not limited to, statements regarding our or our management team's expectations, hopes, beliefs, intentions or strategies regarding the future. The information included in this presentation in relation to Atlas has been provided by Atlas and its management team, and forward-looking statements include statements relating to Atlas' management team's expectations, hopes, beliefs, intentions or strategies regarding the future. In addition, any statements that refer to projections, forecasts or other characterizations of future events or circumstances, including any underlying assumptions, are forward- looking statements. The words "anticipate," "believe," "continue," "could," "estimate," "expect," "intend," "may," "might," "plan," "possible," "potential," "predict," "project," "should," "would" and variations of such words and similar expressions may identify forward-looking statements, but the absence of these words does not mean that a statement is not forward-looking. The forward- looking statements contained in this presentation are based on our current expectations and beliefs concerning future developments and their potential effects on us. There can be no assurance that future developments affecting us will be those that we have anticipated. These forward-looking statements involve a number of risks, uncertainties (some of which are beyond our control) or other assumptions that may cause actual results or performance to be materially different from those expressed or implied by these forward- looking statements. These risks and uncertainties include, but are not limited to: (1) the ability to maintain the listing of the Company's shares of Class A common stock on Nasdaq; (2) the ability to recognize the anticipated benefits of the business combination or acquisitions, which may be affected by, among other things, competition, the ability of the Company to grow and manage growth profitably, maintain relationships with customers and suppliers and retain management and key employees; (3) costs related to acquisitions; (4) changes in applicable laws or regulations; (5) the possibility that the Company may be adversely affected by other economic, business, and/or competitive factors, including as a result of COVID-19; and (6) other risks and uncertainties indicated from time to time in the Company's filings with the U.S. Securities and Exchange Commission, including those under "Risk Factors" therein. Given these risks and uncertainties, you are cautioned not to place undue reliance on any forward-looking statements, which speak only as of the date of this presentation. Except as otherwise required by applicable law, we disclaim any duty to update any forward-looking statements, all of which are expressly qualified by the statements in this section, to reflect events or circumstances after the date of this presentation.

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AGENDA

Business Overview	Financial Overview & Outlook
L. Joe Boyer	David Quinn
Chief Executive Officer	Chief Financial Officer

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A LEADING NATIONAL TECHNICAL SERVICES PLATFORM

Specialized provider of testing, inspection, environmental and engineering services to support and maintain critical infrastructure

		Q2 2021 HEADLINES			SOUTH DAKOTA SANFORD UNDERGROUND RESEARCH COMPOUND'S
					LONG-BASELINE NEUTRINO FACILITY (LBNF)
		Positioned to	Outlook
Revenue and		Benefit from		Supported by
Margin Growth		Strong Market		Record Backlog
		Tailwinds		and New Awards

ESSENTIAL PROVIDER OF MISSION CRITICAL SERVICES

Testing, Inspection & Certification

Environmental Solutions

Atlas has provided certified welding inspection, concrete and soil testing,

storm water sampling, and health and safety services over the past two years.

Atlas will also perform quality inspection services for the compound.

Engineering & Design

Program, Construction, & Quality Management

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Q2 2021 HIGHLIGHTS

Strong performance, sales momentum and new acquisitions expand the platform

Gross Revenue

Adj. EBITDA2

$131.6M$18.2M

• Gross revenues up 16.7% YoY, driven by strong organic growth1 of ~6% and contributions from M&A
• Net revenue2 increased 16.0% YoY, reflecting the continued increase of self-performance and cross-selling while reducing reliance on third party providers. Experiencing some wage rate inflation, mitigating via 90% cost reimbursable contract structure
• Adj. EBITDA2 at 17.1% of net revenues, in line with expectations, up 17.9% over Q2 2020

Adj. EPS2,3

Backlog

$0.11$751M

• Adjusted net income2 of $0.11 per share3
• AEL acquisition broadens reach of infrastructure services while strengthening cross-selling capabilities in the New York Tri-State Area. OSG acquisition broadens reach into Pacific Northwest with specialty light rail and environmental expertise
• Backlog up sequentially to a record $751 million, excluding ~$150 million of new awards pending contract execution

1. Organic growth is defined as total revenue growth less revenue acquired for the comparable pre-acquisition period.
2. Adjusted EBITDA, Net Revenue, Adjusted Net Income and Adjusted EPS are not financial measures determined in accordance with GAAP. For a definition of Adjusted EBITDA, Net Revenue, Adjusted Net Income and Adjusted EPS and a reconciliation to our most directly comparable financial measure calculated and presented in accordance with GAAP, please see the Appendix included herewith.
3. Period over period EPS comparison reflects differences in weighted average Class A share counts. At Q2 2020, Class A Share Count was 5,767,342; Current Class A Share Count 30,633,366.

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