Public engineering firm directory

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ADV-SOC, Inc.

San Diego, CA

Mission-Driven.

WebsitePhone1 office9 projects2 leadersFounded 2012Updated Jun 2026

Project: Naval Air Station North Island Soil Investigation

Service: Environmental ServicesService: Phase I and Phase II Environmental Site AssessmentsService: Underground Storage Tank Assessment and ClosureIndustry: FederalIndustry: DefenseType: Architecture & Engineering+39 more

ASA Engineering & Surveying, LLC

Valdosta, GA

ASA Engineering & Surveying, LLC is a South Georgia engineering consultancy based in Valdosta, established in 1988, offering civil engineering, environmental engineering, land surveying, and aerial mapping services. Over 85% of business comes from repeat clients across commercial, residential, industrial, and governmental sectors. ASA is Georgia Department of Transportation Pre-Qualified, recognized by the Georgia EPD for exemplary erosion control and environmental plans, and holds FAA Part 107 certification for drone-based aerial mapping.

WebsitePhone1 office3 leaders6 credentialsFounded 1988Updated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Transportation InfrastructureService: Structural EngineeringIndustry: CommercialIndustry: ResidentialType: Civil Engineering+20 more

Abysmal Corporation LLC

Integrated Engineering, Environmental, and IT Solutions for Efficiency, Safety, and Sustainability

Website6 projectsUpdated Jun 2026

Project: Redstone Arsenal Facility Audits & Energy Systems

Service: Engineering ServicesService: Chemical EngineeringService: Civil EngineeringIndustry: Environmental & RemediationIndustry: ChemicalsType: Environmental Engineering+22 more

Adams Environmental Engineering Group, LLC

Pasadena, MD

Adams Environmental Engineering Group (AEEG) is a full-service environmental engineering and contracting firm based in the Mid-Atlantic region, providing consulting, design, remediation, and site assessment services for commercial, industrial, and residential clients. AEEG holds Professional Engineering licenses in Maryland, the District of Columbia, Virginia, and 11 additional states, bringing more than 20 years of experience to environmental projects throughout the region.

WebsitePhone1 officeUpdated Jun 2026

Service detail: Environmental Site Assessments

Service: Environmental Site AssessmentsService: Phase I environmental site assessmentsService: Phase II environmental site assessmentsIndustry: Environmental & RemediationIndustry: CommercialType: Environmental Engineering+34 more

Advantus Engineers

Pittsburgh, PA

Advantus Engineers is a Pittsburgh-based engineering consulting practice founded in 2004, specializing in building commissioning, sustainability consulting, MEP assessments, construction quality assurance, and environmental compliance. It serves public, institutional, and commercial clients across the Pittsburgh region. Over more than two decades, the practice has supported LEED certifications, water quality programs, and on-call MEP engineering for clients including the Pittsburgh Water and Sewer Authority and the David L. Lawrence Convention Center.

WebsitePhone1 office7 projects9 leaders3 credentialsFounded 2004

Project: Western Butler County Authority Administration Building

Service: Building CommissioningService: Design and Submittal AnalysisService: Controls and Checklist FormulationIndustry: GovernmentIndustry: CommercialType: MEP+40 more

Air Resource Specialists, Inc.

Fort Collins, CO

A leader in the field of air quality for over 40 years.

Website1 office8 projects1 leaders2 credentials3 publicationsSize Estimate: 35 employees

Project: National Park Service Air Quality Conditions & Trends Website

Service: Air MonitoringService: Criteria Pollutants MonitoringService: Toxics & Hazardous Air PollutantsIndustry: GovernmentIndustry: FederalType: Environmental Engineering+33 more

American Engineering Consultants, Inc.

Cayce, SC

If It Can Be Done, It Will Be Done

WebsitePhone1 office3 leaders4 credentialsFounded 1994Updated Jun 2026

Service detail: Water

Service: WaterService: Assessment & AnalysisService: Booster Pump StationsIndustry: GovernmentIndustry: InfrastructureType: Civil Engineering+57 more

Barron's Environmental Solutions - In Time!, Inc.

Roswell, NM

An environmental services company.

WebsitePhone1 office1 leaders2 credentialsFounded 1998Updated Jun 2026

Service detail: Environmental Management

Service: Environmental ManagementService: Employee Management and TrainingService: Environmental Compliance AuditsIndustry: Environmental & RemediationIndustry: Oil & GasType: Environmental Engineering+11 more

Blue Ocean Civil Consulting

Oceanside, CA

Your success is our success.

WebsitePhone3 offices7 projects2 leaders2 credentialsUpdated Jun 2026

Project: Kunia Country Farms

Service: Stormwater ManagementService: Stormwater Planning and ProgrammingService: Watershed Management and PlanningIndustry: AutomotiveIndustry: DefenseType: Civil Engineering+73 more

Bluestone Environmental Group, Inc.

Malvern, PA

Environmental Engineering & Consulting Services

WebsitePhone5 offices8 projects1 leaders2 credentialsFounded 2010

Project: Former Nebraska Ordnance Plant - Remedial Optimization and Pilot Study

Service: Remediation SolutionsService: CERCLA and RCRA InvestigationsService: Human Health and Ecological Risk AssessmentsIndustry: Environmental & RemediationIndustry: DefenseType: Environmental Engineering+18 more

CAS Consulting & Services, Inc.

Austin, TX

Civil engineering, program management, and construction management solutions for water, wastewater, and transportation infrastructure

WebsitePhone4 offices6 projects8 leaders25 credentialsFounded 1999

Project: Huebner Creek Regional Stormwater Facility

Service: Water & Wastewater EngineeringService: Water Distribution Evaluation and DesignService: Collection System Design and RehabilitationIndustry: Water SupplyIndustry: WastewaterType: Civil Engineering+31 more

Cedarville Engineering Group, LLC

Pottstown, PA

Plan. Design. Build. Greatness.

WebsitePhone1 office8 projectsFounded 2010Size Estimate: 25-100 employeesUpdated Jun 2026

Project: Industrial Stormwater Compliance

Service: Civil EngineeringService: Capital Improvements Planning and DesignService: Stormwater Management DesignIndustry: FederalIndustry: GovernmentType: Civil Engineering+71 more

DECON Environmental, Inc.

Scotts Valley, CA

Professional engineering, environmental assessment, and industrial hygiene services

WebsitePhone1 office11 projects7 credentialsUpdated Jun 2026

Project: Air Discharge Permitting for 300,000-Gallon Per Day Wastewater Treatment Plant

Service: Demolition Environmental ServicesService: Preparation and Presentation of Demolition Environmental PlansService: Demolition PermittingIndustry: Land DevelopmentIndustry: Food & BeverageType: Environmental Engineering+45 more

Dalton, Olmsted & Fuglevand

Seattle, WA

Environmental Engineering, Consulting & Strategy

WebsitePhone5 offices13 projects6 leadersFounded 1989Size Estimate: 11-50 employees

Project: Duwamish Waterway Sediment Remediation and Habitat Project

Service: Environmental Remediation & EngineeringService: Federal & State CleanupService: Field Investigation & Conceptual Site ModelingIndustry: Environmental & RemediationIndustry: Stormwater & Flood ControlType: Environmental Engineering+14 more

ECS Group of Companies

Chantilly, VA

Your Go-To Engineering Consulting Partner

Website1 office6 projects1 leadersFounded 1988Size Estimate: 1,000+ employeesUpdated Jun 2026

Project: SK Innovation EV Battery Site

Service: Geotechnical EngineeringService: Subsurface ExplorationService: In-Situ TestingIndustry: CommercialIndustry: IndustrialType: Geotechnical Engineering+48 more

ELOS

Hammond, LA

Where Natural Environments and Human Interests Intersect

WebsitePhone1 office6 leaders10 credentialsFounded 2006Updated Jun 2026

Service detail: Permitting Applications and Regulatory Compliance

Service: Permitting Applications and Regulatory ComplianceService: Environmental ServicesService: Environmental Site AssessmentsIndustry: GovernmentIndustry: FederalType: Environmental Engineering+26 more

EnSafe Inc.

Memphis, TN

Creative Thinking. Custom Solutions.

WebsitePhone20 offices4 projects15 leaders4 credentialsFounded 1980

Project: Remediation of Perchlorate Contamination at NWIRP McGregor

Service: Environmental Site Assessment & InvestigationService: Phase I/II Environmental Site AssessmentsService: Soil and Groundwater InvestigationsIndustry: Environmental & RemediationIndustry: FederalType: Environmental Engineering+47 more

Endesco, Inc.

Rockville, MD

Endesco, Inc. is a multi-discipline civil engineering design, consulting, and construction management firm founded in 1997 and headquartered in Rockville, Maryland. It specializes in water resources, transportation planning and traffic engineering, roadway and lighting design, environmental studies, GIS, and project and construction management, primarily serving state DOTs, transit authorities, counties, cities, and federal agencies across the Washington, DC/Baltimore metro region and beyond.

WebsitePhone2 offices6 projects9 credentialsFounded 1997Size Estimate: 5-25 employees

Project: Transform I-66 Outside the Beltway (Express Lanes), Northern Virginia

Service: Water ResourcesService: Stormwater ManagementService: Hydraulics and HydrologyIndustry: GovernmentIndustry: TransportationType: Civil Engineering+52 more

Engineering Analytics, Inc.

Fort Collins, CO

Professional civil and environmental engineering solutions

WebsitePhone4 officesFounded 2008Updated Jun 2026

Service detail: Engineering and Design

Service: Engineering and DesignService: Site Civil DesignService: Structural DesignIndustry: MiningIndustry: AerospaceType: Civil Engineering+47 more

EnviroServices & Training Center, LLC

Honolulu, HI

We'll Take Care of It.

WebsitePhone1 office8 projects1 credentialsFounded 1994Updated Jun 2026

Project: Lahaina Post-Wildfire Stormwater Mitigation & Infrastructure Rehabilitation

Service: Environmental ComplianceService: Environmental Compliance PlansService: NPDES Permitting and ComplianceIndustry: Environmental & RemediationIndustry: Stormwater & Flood ControlType: Environmental Engineering+38 more

Environ-Civil Engineering, Ltd.

Columbia, MD

Quality, Integrity, Innovation, and Responsiveness

WebsitePhone3 offices6 projects3 leaders12 credentialsFounded 1992

Project: WSSC Piscataway Water Resource Recovery Facility Bio-Energy Project

Service: Water & Wastewater EngineeringService: Water supply and distribution system designService: Distribution and transmission main systemsIndustry: GovernmentIndustry: FederalType: Water / Wastewater Engineering+50 more

FC&E Engineering, LLC

Brandon, MS

Engineered Solutions to Environmental Challenges

WebsitePhone1 office17 leaders4 credentialsFounded 2004Updated Jun 2026

Service detail: Environmental Permitting and Compliance

Service: Environmental Permitting and ComplianceService: Turnkey Environmental PermittingService: Environmental Compliance AuditsIndustry: AgricultureIndustry: AerospaceType: Civil Engineering+43 more

GTS Consulting

Bryant, AR

Quality results, timely service.

WebsitePhone5 offices5 credentialsFounded 2005Updated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Subsurface Drilling and SamplingService: Foundation Design and Support OptionsIndustry: CommercialIndustry: GovernmentType: Environmental Engineering+34 more

Harshman CE Group, LLC

Washington, PA

Keep it simple - Do it right - Get it done

WebsitePhone2 offices4 projects11 leadersSize Estimate: 15-50 employeesUpdated Jun 2026

Project: Amwell Township East Hillsboro Road Bridge Replacement Project

Service: Civil EngineeringService: Site Design & Land DevelopmentService: Hydrologic & Hydraulic StudiesIndustry: GovernmentIndustry: FederalType: Civil Engineering+57 more