Shell Engineering & Associates, Inc. is an environmental consulting firm based in Columbia, Missouri, with job sites and clients across the country.
Founded in 1975 by Harvey Shell — who headed Missouri DNR's first Air Quality Program before entering private practice — the firm brings a level of regulatory credibility that few consultants can match. Today Shell Engineering is led by Charles Shell, with the same commitment to senior-level expertise and direct client relationships that has defined the firm for over fifty years.
We provide end-to-end environmental compliance services to regulated facilities of every size, from small agricultural operations to major industrial sources:

Air Permitting (Title V, PSD/NSR, construction permits)
Meteorological Tower Monitoring (Campbell Scientific authorized partner)
Ambient Air & Air Toxics Monitoring
Dispersion Modeling (AERMOD, AERSCREEN)
Water & Stormwater Compliance (NPDES, SPCC, CWA, SDWA)

At Shell Engineering, every client gets senior staff on their project — no handoffs, no surprises. Just clear guidance and reliable results.
Specialty: Environmental Consulting · Air Quality · Regulatory Compliance · Meteorological Monitoring · Columbia, Missouri

Shell Engineering and Associates, Inc.

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Shell Engineering and Associates, Inc.

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