Case Studies

Taking ownership of our clients’ air quality obligations is one of our foundational principles. ALL4’s expertise, and relationships with state agencies navigate clients through the rules and regulations faced by various industries.  We invite you to review select case studies that span our service areas and our clients’ wide array of industries.
Preparation of Greenhouse Gas Monitoring Plan Clients Challenge: The U.S. Environmental Protection Agency (U.S. EPA) developed proposed revisions to 40 CFR Part 60, Subparts Ce and Ec that dramatically changed the process for developing emission limits
Multimedia Regulatory Compliance and Analysis Clients Challenge:  The Client has five (5) closed landfills in the state of New Jersey that are subject to a variety of regulations and are operating pursuant to different environmental permits. 
Overall Plant Air Quality/Environmental Support Clients Challenge: The client is comprised of six (6) lead acid battery manufacturing facilities, thirty-four (34) lead oxide production units, a secondary lead smelter, a plastic recovery facility, a sulfuric acid recovery facility, a plastic injection molding facility, and miscellaneous support operations.
Air Quality Regulatory Updates Clients Challenge: Providing air quality regulatory updates from a corporate level to 30 plus Mills to ensure a transfer of current knowledge and overall consistency in the company’s approach to air quality requirements.
Dispersion Modeling Analysis Clients Challenge: The client planned to make modifications to their Lime Kilns that included installing natural gas burners.
Air Toxics Screening Tool Clients Challenge: The client is a carpet manufacturing facility that operates several similar processing lines that apply finishes to the back of carpets.
Prevention of Significant Deterioration (PSD) Permit Application Clients Challenge: ALL4 was asked to assist the client’s Corporate and Mill staff with developing an air permitting strategy for major facility upgrades that were being planned.
Natural Gas Combustion Turbine Clients Challenge: The client desired to install a natural gas-fired combustion turbine with a heat recovery steam generator (HRSG) to provide onsite electricity for the Pennsylvania manufacturing facility.
Plantwide Applicability Limit (PAL) Permit Clients Challenge: The facility operates multiple adhesive machines on which specialty adhesive materials (formulated on-site)
Compliance Assistance Clients Challenge: Lehigh Cement Company located in Evansville, PA is a subject to 40 CFR 63 Subpart LLL and 25 Pa. Code 139.102(3).

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