PSD Air Permitting for Oilseed Extraction Facility

Minnesota Soybean Processors (MNSP)
Brewster, MN

Minnesota Soybean Processors (MNSP) is a farmer-owned cooperative in Brewster, MN, operating a soybean oil extraction and biodiesel production facility. Since their start of operations in 2003, they have relied on Wenck to provide air quality permitting and compliance assistance for their operations. When MnSP decided to design and construct similar type operations at a greenfield location in Spiritwood, North Dakota, they looked to Wenck for the air permitting expertise to complete the task, based on our depth of experience in permitting oilseed extraction facilities throughout Minnesota, North Dakota and South Dakota.  They also relied on Wenck for a Phase 1 Environmental Site Assessment (ESA) and Wastewater Authorizations with the City.

The new North Dakota Soybean Processors (NDSP) facility required a complex Prevention of Significant Deterioration (PSD) air permit. Wenck helped NDSP obtain a PSD construction air permit for the new facility in a timely manner, working closely with NDSP’s design engineers and the North Dakota Department of Health (NDDH). The facility obtained a permit meeting the requirements of the PSD program, while providing a straight-forward permit with clear compliance objectives.

As part of the PSD Permitting requirements, Wenck completed Best Available Control Technology (BACT) analysis for VOC and particulate emitting equipment at the facility, including VOC losses from extraction and biodiesel production equipment, and fabric filter baghouse and cyclone control equipment. Air quality dispersion modeling was completed to demonstrate compliance with the Increment Standards and the National Ambient Air Quality Standards (NAAQS). In addition, the permit application addressed numerous National Emission Standards for Hazardous Air Pollutants (NESHAPs) and New Source Performance Standards (NSPS), such as Solvent Extraction for Vegetable Oil Production NESHAP, Miscellaneous Organic Chemical Manufacturing NESHAP, Grain Elevators NSPS, Industrial Boilers NESHAP, Internal Combustion Engines NSPS and NESHAP, and Volatile Organic Liquid Storage Tanks NSPS. Other analyses completed as part of the permitting process included air toxics assessment, visibility assessment for a nearby Class II national wilderness area, and Federal Aviation Administration (FAA) approvals for facility structures.