• All4

    Industry Leader in Air Quality Compliance and Permitting Solutions

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    Category: Environmental Services

    Transaction Type: Recapitalization, 2018

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    All4 LLC is a leading environmental services firm providing air quality compliance and permitting solutions across a variety of industrial end markets in North America.


    All4, headquartered in the greater Philadelphia area, with additional offices in Atlanta, Washington DC, and Houston, was founded in 2002 by four industry-leading air quality experts: Bill Straub, Kevin Hickey, John Egan, and Dan Holland. The Company provides mission-critical air quality support and consulting services to diverse industries including pulp & paper, oil & gas, food and beverage, waste management, power generation, and automotive. All4 is an award-winning, technical leader in the industry and is a nationally recognized “Best Place to Work”.