Public engineering firm directory

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A & M Engineering and Environmental Services, Inc.

Tulsa, OK

Providing Quality Services for Over 30 Years

WebsitePhone4 offices5 projects2 credentialsFounded 1984Updated Jun 2026

Project: Cumberland Levee Repair at Lake Texoma

Service: Construction & Remediation ServicesService: Landfill ConstructionService: Impoundments & Water StructuresIndustry: Environmental & RemediationIndustry: FederalType: Environmental Engineering+72 more

Adley Services, LLC

Lafayette, LA

Onshore or offshore. Upstream, midstream, or downstream.

WebsitePhone1 office4 leadersSize Estimate: 10-50 employeesUpdated Jun 2026

Service detail: Facilities Engineering and Design

Service: Facilities Engineering and DesignService: Offshore and Onshore Facilities DesignService: Industrial and Refining Facility EngineeringIndustry: Oil & GasIndustry: PetrochemicalType: Process Safety Engineering+27 more

Alta Environmental & Infrastructure

Tucson, AZ

Partnering to Build & Protect What Matters Most

WebsitePhone5 offices10 projects14 leaders3 credentialsSize Estimate: 250-999 employees

Project: ADOT I-10 Tucson Reconstruction

Service: Civil EngineeringService: Site Civil DesignService: Grading, Drainage & Stormwater ManagementIndustry: InfrastructureIndustry: CommercialType: Civil Engineering+30 more

CHA Consulting, Inc.

Albany, NY

Creating solutions. Helping people. Improving our world.

Website2 offices4 projects10 leaders5 credentialsFounded 1952Size Estimate: 2,100+ employees

Project: I-91 Interchange 29 Flyover Bridge and Charter Oak Bridge

Service: Transportation SolutionsService: Bridge design, analysis, and reconstructionService: Highway and roadway designIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+96 more

CHA Consulting, Inc.

Albany, NY

Finding a better way.

Website1 office10 leaders3 credentialsFounded 1952Size Estimate: 2,100 employeesUpdated Jun 2026

Service detail: Transportation Solutions

Service: Transportation SolutionsService: Accelerated Bridge Construction (ABC) Design & ConsultingService: Bridge Design & AnalysisIndustry: TransportationIndustry: Highways & RoadsType: Architecture & Engineering+182 more

Fire & Risk Alliance

Rockville, MD

Engineering a Safer Future

WebsitePhone1 officeUpdated Jun 2026

Service detail: Fire Protection Engineering & Code Consulting

Service: Fire Protection Engineering & Code ConsultingService: Code ConsultingService: Fire Protection and Life Safety Narrative ReportsIndustry: AerospaceIndustry: DefenseType: Fire Protection Engineering+40 more

Gross & Co., LLC

Achieve Project Excellence with Gross & Co.

Website3 projects4 leadersUpdated Jun 2026

Project: Biomass to Sustainable Aviation Fuel (SAF) Feasibility Study

Service: Engineering Design and EstimatingService: Front-End Engineering Design (FEED) and detailed designService: Process Flow Diagrams (PFDs) and P&IDsIndustry: Biomass & BioenergyIndustry: Waste-to-EnergyType: Process Engineering+18 more

KERAMIDA Inc.

Indianapolis, IN

Global Sustainability, EHS, and Engineering Services Firm

WebsitePhone1 office6 projects1 leaders3 credentials2 publications

Project: EHS Audit for Las Vegas Convention and Visitors Authority

Service: Environmental ConsultingService: Air Quality Management & PermittingService: Brownfield Redevelopment ServicesIndustry: Oil & GasIndustry: ManufacturingType: Environmental Engineering+50 more

McKinley Architecture and Engineering

Wheeling, WV

Delivering successful projects through experience and innovation.

WebsitePhone7 offices5 credentialsUpdated Jun 2026

Service detail: Architecture

Service: ArchitectureService: EngineeringService: Structural engineeringIndustry: EducationIndustry: HealthcareType: Architecture & Engineering+20 more

Nebula Safety & Environmental

Irvine, CA

Nebula Safety & Environmental is a process safety and environmental consulting firm headquartered in Irvine, California, with offices in Riverside, California, Columbus, Ohio, Post Falls, Idaho, and Henderson, Nevada. Founded by a team with over 40 years of combined experience, Nebula specializes in OSHA PSM and EPA RMP compliance, process hazard analysis facilitation, dust hazard analysis, hazard mitigation plan preparation, and environmental and health, safety, and environment consulting for pharmaceutical, aerospace, chemical, oil and gas, government, and manufacturing clients nationwide.

Website5 officesUpdated Jun 2026

Service detail: RMP/PSM Services

Service: RMP/PSM ServicesService: PSM/RMP Program DevelopmentService: Process Safety Compliance AuditsIndustry: PharmaceuticalIndustry: AerospaceType: Process Safety Engineering+13 more

Orbital Engineering, Inc.

One Orbital. Every Solution.

WebsiteUpdated Jun 2026

Service detail: Utility Services

Service: Utility ServicesService: Substation EngineeringService: Transmission Line EngineeringIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Power & Utility Engineering+37 more

Process Engineering Associates, LLC

Oak Ridge, TN

Applied Chemical Engineering Services for the Process Industries

WebsitePhone6 officesFounded 1996Updated Jun 2026

Service detail: Process Design

Service: Process DesignService: Conceptual and Preliminary Process Design (FEL-0 / FEL-1)Service: Detailed Process Design (FEL-2 / FEL-3 / Pre-FEED)Industry: Oil & GasIndustry: ChemicalsType: Chemical Engineering+27 more

RCP Inc.

Houston, TX

Professional Engineers. Regulatory Experts. Trusted Partners.

WebsitePhone1 office2 leadersFounded 1995Size Estimate: 51-200 employeesUpdated Jun 2026

Service detail: Consulting Services

Service: Consulting ServicesService: Jurisdictional AnalysisService: Expert WitnessIndustry: Oil & GasIndustry: ChemicalsType: Process Safety Engineering+49 more

Safety Management Services, Inc.

West Jordan, UT

Safety Management Services, Inc. (SMS) is a specialized engineering and testing firm headquartered in West Jordan, Utah, focused on energetic materials safety, process hazards analysis, and risk management for explosive, flammable, and oxidizing substances. It is internationally recognized for providing risk management services to commercial clients and government agencies, with a team of engineers and scientists averaging 15 years of experience in explosives risk management, testing, and test equipment. SMS is one of six DOT-authorized laboratories permitted to recommend shipping classifications for Class 1 (explosives) articles and substances, with five of the twelve authorized test agents on staff. Services span process hazards analysis (HAZOP, FMEA, PSM, LOPA), energetic materials testing (sensitivity, reactivity, DOT/DOD classification), facility siting and design, decommissioning and decontamination (D3), training, and proprietary test equipment manufacturing. As of December 2025, SMS was acquired by Jensen Hughes.

WebsitePhone1 officeUpdated Jun 2026

Service detail: Process Hazards Analysis (PHA)

Service: Process Hazards Analysis (PHA)Service: HAZOP (Hazard and Operability Analysis)Service: FMEA (Failure Modes and Effects Analysis)Industry: DefenseIndustry: AerospaceType: Process Safety Engineering+21 more

Sandhill Holdings LLC

Tucson, AZ

Partnering to Build & Protect What Matters Most

WebsitePhone5 offices11 projects14 leaders3 credentialsSize Estimate: 250-999 employees

Project: ADOT I-10 Tucson

Service: Civil EngineeringService: Site DevelopmentService: Grading, Drainage, and Utility DesignIndustry: CommercialIndustry: ResidentialType: Civil Engineering+40 more

Upper Consulting, Inc.

Quincy, IL

Process Mechanical Engineering Consulting

WebsitePhone1 office8 projectsUpdated Jun 2026

Project: Alexandria Company for Seed Processing - Multiseed Crush Plants

Service: Plant & Process EngineeringService: Process Development (Continuous & Batch)Service: PFD & P&ID Creation & UpdatingIndustry: AgricultureIndustry: Food & BeverageType: Process Engineering+38 more

aeSolutions

Engineering smarter, safer operations.

Website7 projects2 credentials5 publicationsFounded 2012Updated Jun 2026

Project: Heater Controls Upgrade for Arctic Pipeline Pump Stations

Service: Process Safety Management (PSM)Service: Process Hazard Analysis (PHA)Service: PSM/RMP AuditsIndustry: ChemicalsIndustry: Oil & GasType: Process Safety Engineering+39 more