[LETTERHEAD OF PRICEWATERHOUSECOOPERS LLP] EXHIBIT 16 May 9, 2000 Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 20549 Commissioners: We have read the statements made by Atlantic Richfield Company (copy attached), which we understand will be filed with the Commission, pursuant to Item 4 of Form 8-K/A, as part of the Company's Form 8-K/A report dated May 9, 2000. We agree with the statements concerning our Firm in such Form 8-K. Very truly yours, /s/ PricewaterhouseCoopers LLP PricewaterhouseCoopers LLP