Providing practical, 
science-driven solutions 
that create lasting value.

a 100% employee-owned environmental, civil, 
and geotechnical engineering firm

For 35 years, we have delivered practical science-based solutions to public- and private-sector clients.

Services

Environmental ›› Hydrogeology / Hydrology ›› Civil Engineering ›› Geology ›› Construction Support ›› Geotechnical Engineering ›› Metal Recovery ›› Soil Laboratory ›› Specialized Services ››

Markets

Solid Waste ›› Mining ›› Government ›› Water Managers ›› Oil / Gas / Energy ›› Commercial / Industrial ›› Legal ›› Developers ››

Our Family of Brands
DBS&A
Geo-Logic Perú
JSAI
Kunkel Engineering Group
Loughlin Water Associates, LLC
RGH Consultants
Summit Water Resources
The Mines Group
All Brands

Featured Projects

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Arizona

Tucson Airport Remediation 
Superfund Site

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California

Simi Valley Mining GCCS Expansion Design and Construction Quality Assurance

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Arizona

Keeping up with gold and making room for site expansion at the Marigold Mine

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All Projects

Featured News

GLA Ranks on ENR 2025 Top Environmental Firm List

Excerpt Goes Here
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All News