Item 1A. Risk Factors.

Except as set forth below, there have been no material changes to the risk factors previously disclosed in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2022.

The instability of certain financial institutions may have adverse impacts on certain of our vendors and customers and/or on our ability to access our cash deposits and make borrowings, which could negatively impact our financial condition, results of operations and cash flows.

In 2023, there have been public reports of instability at certain financial institutions. Although we do not hold material deposits or investments at these financial institutions, and despite the steps taken to date by U.S. and foreign agencies and institutions to protect depositors, the follow-on effects of the events surrounding recent bank failures and pressure on other financial institutions are unknown, could include failures of other financial institutions to which we face direct or indirect exposure, and may lead to disruptions to the cash flows, operations and financial condition of our vendors, customers, and/or us. Additionally, tight credit conditions could generally result in economic slowdown and reduced demand for environmental services.

Additionally, Credit Suisse AG New York Branch (“Credit Suisse”) is a lender under our $3.5 billion revolving credit facility, having made a commitment to fund approximately 5.14% of borrowings under the facility. It was recently announced that fellow Swiss bank UBS Group AG plans to acquire Credit Suisse. We do not anticipate any material disruption to our ability to access funds under our $3.5 billion revolving credit facility or otherwise finance our business and operations. However, if multiple lenders under our $3.5 billion revolving credit facility were to fail or be unable to fund borrowings, it could have a material adverse effect on our financial condition, results of operations and cash flows.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

The following table summarizes common stock repurchases made during the first quarter of 2023 (shares in millions):

Issuer Purchases of Equity Securities


				Total Number of
	Total			Shares Purchased as	Approximate Maximum
	Number of	Average		Part of Publicly	Dollar Value of Shares that
	Shares	Price Paid		Announced Plans or	May Yet be Purchased Under
Period	Purchased	per Share		Programs	the Plans or Programs
January 1 — 31	—	$	—	—	$	1.50 billion
February 1 — 28 (a)	1.9	$	150.34	1.9	$	1.15 billion
March 1 — 31	—	$	—	—	$	1.15 billion	(b)
Total	1.9	$	150.34	1.9

(a)

In February 2023, we entered into an accelerated share repurchase (“ASR”) agreement to repurchase $350 million of our common stock. At the beginning of the repurchase period, we delivered $350 million cash and received 1.9 million shares based on a stock price of $150.34, exclusive of the 1% excise tax discussed below. The final number of shares to be repurchased and the final average price per share under the ASR agreement, exclusive of the 1% excise tax, will depend on the volume-weighted average price of our stock, less a discount, during the term of the agreement. Purchases under the ASR agreement are expected to be completed in April 2023.

The Inflation Reduction Act of 2022, which was enacted into law on August 16, 2022, imposed a nondeductible 1% excise tax on the net value of certain stock repurchases made after December 31, 2022. During the three months ended March 31, 2023, we reflected the applicable excise tax in treasury stock as part of the cost basis of the stock repurchased and recorded a corresponding liability for the excise taxes payable in accrued liabilities in our Condensed Consolidated Balance Sheet.

(b)	As of March 31, 2023, the Company has authorization for $1.15 billion of future share repurchases. Any future share repurchases pursuant to this authorization of our Board of Directors will be made at the discretion of management and

	will depend on factors similar to those considered by the Board of Directors in making dividend declarations, including our net earnings, financial condition and cash required for future business plans, growth and acquisitions.

Item 4. Mine Safety Disclosures.

Information concerning mine safety and other regulatory matters required by Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act and Item 104 of Regulation S-K is included in Exhibit 95 to this quarterly report.

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