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David J. Armstrong counsels clients on environmental risks and liabilities in corporate and real estate transactions and regulatory compliance. Mr. Armstrong has significant experience assisting clients in the defense of administrative and civil proceedings involving permitting and environmental enforcement matters at the federal and state levels. He also has experience conducting environmental due diligence, negotiating environmental indemnity agreements and environmental insurance policies, and providing advice on environmental issues in a variety of transactions.

Mr. Armstrong regularly litigates environmental matters for industrial, manufacturing, and commercial clients across the country in federal and state courts, in administrative tribunals, and before arbitrators and mediators.