Grant Tolley

Advised a major energy infrastructure company on environmental permitting strategy for a multi-gigawatt natural gas-fired power generation project in Wyoming intended to support AI data center development

Advises AI developers on how ownership, governance, and contractual rights affect source aggregation, common control, and air-permitting risk

Counseled an AI company on air permitting for gas-fired turbines at a former steam-electric generating site, including replacement-facility status, phased construction, and major NSR applicability, and on a portable-source strategy addressing interstate portability, Title V, and minor NSR

Represents independent oil and gas producers in EPA Clean Air Act enforcement matters involving upstream operations in the Permian Basin

Represented a petrochemical manufacturer in a DOJ Clean Air Act enforcement action in the U.S. District Court for the Southern District of Ohio, briefing a motion to dismiss grounded in the Title V permit shield, the bar on collateral attacks on permits, and the fair notice doctrine

Represents a marine terminal facility in multiple environmental enforcement matters with DOJ and EPA and in connection with power generation project permitting

Represented a heating and ventilation equipment manufacturer in a U.S. Department of Energy enforcement matter

Represented a housing developer in challenging permit conditions in state court and administrative proceedings

Counsels clients on compliance with NSPS and NESHAP standards, including EPA’s OOOOb/OOOOc methane rules for the oil and gas sector and requirements for engines and combustion turbines

Advises a metals producer on air-quality requirements for smelting operations, including air-dispersion modeling issues before EPA

Drafted comments on major EPA proposals, including oil and gas methane rules, the Mercury and Air Toxics Standards, and EPA’s National Compliance Initiatives

Served three years as a member of the court-appointed monitorship overseeing Volkswagen’s compliance with the civil and criminal settlements resolving the $33 billion Dieselgate scandal

Represented on-road and nonroad equipment manufacturers in EPA and California Air Resources Board (CARB) matters involving vehicle and engine certification, alleged defeat devices, on-board diagnostics, and greenhouse gas compliance

Counseled an automaker on disclosure of auxiliary emission control devices (AECDs) under EPA’s Audit Policy

Conducts environmental due diligence and drafts and negotiates environmental representations, covenants, indemnities, and disclosures for M&A, project finance, and capital markets transactions involving energy, infrastructure, and industrial assets

Advised Flogistix Holdings, a White Deer Energy portfolio company, on environmental matters in its combination with Estis Compression and Flowco Production Solutions to form Flowco, a production optimization and artificial lift solutions provider

Advised Global Infrastructure Partners on environmental matters in its acquisition from TC Energy of a 40% interest in the Columbia Gas Transmission and Columbia Gulf Transmission pipeline systems, a $5.2 billion transaction

Advised Beard Energy Transition Acquisition Corp., a special purpose acquisition company, on environmental matters in its business combination with Suntuity Renewables