Neptune and Company, Inc.

What Neptune and Company, Inc. does

Neptune and Company, Inc. is an employee-owned environmental consulting firm founded in 1992 and headquartered in Lakewood, Colorado, with a stated headcount of 70+ employees distributed across roughly 18 U.S. states plus two primary offices (Colorado and Los Alamos, New Mexico). The firm's mission is to improve the quality of environmental decision making through five integrated service lines: decision analytics and stakeholder engagement, statistics and data science, environmental modeling, risk assessment, and quality assurance. Its core technology stack rests on proprietary open-source decision-analysis frameworks—most notably GiSdT (Guided Interactive Statistical Decision Tools, an R/JAGS-powered web framework), DASEES, SMARTe, and a GoldSim-based Generic PA Model—combined with deep expertise in environmental modeling codes (MODFLOW, FEHM, STOMP, HYDRUS, PFLOTRAN) and certified GoldSim Solution and Training Provider status.

The company makes money as a professional services firm through federal and state IDIQ contracts (notably EPA ORD Technical Quality Assurance with a $12.5M ceiling and participation in the EPA OAR/CCD Greenhouse Gas Program with a $23.8M ceiling via subcontractor RTI), subcontractor roles to primes such as Cadmus Group and ICF, direct state environmental agency engagements, and project-based commercial consulting for energy, financial, and legal clients. Pricing is contract-based (time-and-materials and firm-fixed-price task orders) with multi-year contract cadence and no publicly disclosed tiered pricing. Customer concentration skews toward federal agencies—EPA, DOE (including Hanford, Los Alamos, and West Valley), DOD (U.S. Army and Navy), NASA, and USAID—with complementary exposure to state environmental agencies and a smaller commercial book.

The firm is led by co-founder Paul Black (CEO) and Paul Duffy (President), supported by an unusually senior technical bench that includes the Chair of ISO TC 69 (Kelly Black), a Diplomate of the American Board of Toxicology, certified GoldSim Training Providers, and DOE NQA-1-approved personnel. Distinguishing commercial signals include published cost-savings outcomes (approximately $10M in estimated savings for Montana National Guard UXO risk modeling), regulator-approved DQO and statistical sampling designs, and GoldSim training delivered to Korean nuclear safety agencies. Neptune holds no disclosed external funding, has no parent company, and operates as an independent small business, with recent (2024-2026) signals pointing to deliberate build-out of business development, software engineering, and adjacent climate/water-security capabilities.

Name

Neptune and Company, Inc.

Legal name

Neptune and Company, Inc.

Website

https://neptuneinc.org

Company type

Private

Founded year

1992

Operating status

Operating

Headcount range

11–50 employees

Short description

Neptune and Company is an employee-owned environmental consulting firm that provides decision analytics, statistics, environmental modeling, risk assessment, and quality assurance services primarily to U.S. federal agencies (EPA, DOE, DOD, NASA, USAID), with secondary state and commercial engagements.

Ownership category

akta.pro rank

Product category

Environmental Consulting Services

NAICS

Environmental Consulting Services (54162), Other Scientific and Technical Consulting Services (54169)

SIC

Services-Commercial Physical & Biological Research (8731), Services-Management Consulting Services (8742), Services-Testing Laboratories (8734)

akta.pro primary industry

Environmental Liabilities, Reserves & Financial Assurance (Cost-Cap, Impairment Support) (EUAHAEAI)

akta.pro secondary industries

Waste & Hazardous Materials Management (incl. HazMat) (BPAHAJAK), Inspection, Audit & Compliance Management (Regulator/Third-Party Oversight) (EUAKAEAD), Nature & Biodiversity Reporting (TNFD, natural capital) (EUAHAJAM)

Keywords

• Environmental consulting services
• Risk assessment modeling
• Statistics data science
• Quality assurance consulting
• Environmental decision support

Headquarters

HQ city

Lakewood

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. Government Consulting Contracts: Revenue generated through federal and state IDIQ (Indefinite Delivery Indefinite Quantity) contracts, single-award contracts, and subcontractor relationships with prime contractors. Federal contracts include EPA ORD Technical Quality Assurance ($12.5M ceiling), EPA OAR greenhouse gas support ($23.8M ceiling), EPA OW drinking water program. Primarily professional services with time-and-materials and firm-fixed-price task orders.
2. Commercial Client Consulting: Environmental consulting services to commercial clients including environmental attorneys, universities, land developers, multinational energy companies, and financial/lending institutions. Project-based consulting work.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels5 records

Core offering

Neptune and Company, Inc. is an employee-owned environmental consulting firm that provides specialized analytical services to federal, state, and commercial clients for environmental decision-making. Core offerings span Decision Analytics and Stakeholder Engagement, Statistics & Data Science, Environmental Modeling, Risk Assessment, and Quality Assurance, augmented by Training Offerings and litigation/expert-elicitation support. The firm develops and uses proprietary open-source tools (GiSdT, DASEES, SMARTe, GoldSim Generic PA Model) to deliver structured, statistically rigorous environmental decisions for contaminated sites, radioactive waste programs, and regulatory compliance projects.

Product overview

Neptune and Company is an environmental consulting firm (70+ employees, employee-owned) founded in 1992, offering a portfolio of interconnected analytical services. The core offerings include Decision Analytics and Stakeholder Engagement, Statistics & Data Science, Environmental Modeling, Risk Assessment, and Quality Assurance services. Their proprietary technology platforms include GiSdT (Guided Interactive Statistical Decision Tools) - an open-source web-based framework powered by R and JAGS that provides statistical guidance and dynamic analysis capabilities; DASEES - an EPA-funded open-source framework for ecosystem services decision analysis; and SMARTe - a brownfield decision support system. They also provide specialized GoldSim modeling services, ProUCL software technical support for EPA, expert elicitation, and statistical litigation support. The company serves federal agencies (EPA, DOE, NASA, DOD), state environmental agencies, and commercial clients across environmental consulting, radioactive waste management, and regulatory compliance.

Differentiator

Problem solved

Functional benefit

Products and services

• Decision Analytics and Stakeholder Engagement Structured decision-making service that integrates stakeholder values, science, and statistics into a transparent, interactive framework for untangling social, scientific, economic, and regulatory complexities of environmental problems. For federal, state, and commercial clients facing complex multi-party environmental decisions.
• Statistics & Data Science Custom statistical modeling and data science consulting covering data collection and management, geostatistics, Bayesian analysis, advanced risk assessment statistics, sampling design, and machine learning for environmental applications. For federal, state, and commercial clients needing defensible statistical analyses.
• Environmental Modeling Modeling of flow and contaminant transport in groundwater, surface water, soil, air, biota, soil vapor, and erosion using deterministic and probabilistic models (MODFLOW, FEHM, STOMP, HYDRUS, PFLOTRAN, GoldSim) with quantified uncertainty. For federal and commercial clients needing transparent, traceable, defensible environmental models.
• Risk Assessment Human health and ecological risk assessments using advanced expertise and tools to identify cost-effective and defensible cleanups. For federal, state, and commercial clients under CERCLA, RCRA, and other regulatory frameworks.
• Quality Assurance Custom QA/QC solutions including quality management systems development, data quality objectives, laboratory audits, and data validation. For federal, state, and commercial clients needing NQA-1 / ISO-aligned environmental data quality programs.
• Training Offerings Custom statistical training, analytical laboratory training, and GoldSim/ProUCL software courses covering statistics, ISO standards, and quality management. For federal, state, commercial, and international clients (e.g., Korea Institute of Nuclear Safety training delivery).
• GiSdT (Guided Interactive Statistical Decision Tools) Open-source web-based decision analysis framework providing statistical guidance coupled with dynamic statistical design, analysis, and interpretation capabilities. Supports knowledge bases, expert systems, XML/PDF document building, PostgreSQL database linking, and GIS integration. Developed and made available by Neptune and Company for environmental decision-making.
• GoldSim Modeling Probabilistic simulation modeling service using GoldSim software for performance assessment, radiological modeling, water resource management, and decision analysis. Includes Monte Carlo simulation, contaminant transport modeling, and certified training. For federal, state, commercial, and international (e.g., Korea, Slovakia) clients in nuclear, radioactive waste, and environmental management.
• Statistical Litigation Support Expert witness consulting and legal support including statistical analysis, contaminant exposure assessment, dose reconstruction, and risk assessment for environmental legal cases. For environmental attorneys and clients involved in environmental litigation.
• Expert Elicitation Formal process gathering quantitative information from experts including probabilities, consequences, costs, and value structures for decision analysis and Bayesian statistical analysis. For federal and commercial clients facing high-stakes environmental decisions.
• ProUCL Software Support Technical support, maintenance, and training services for USEPA's ProUCL statistical software used in environmental data analysis. For federal, state, and commercial users of ProUCL.
• DASEES (Decision Analysis for a Sustainable Environment, Economy and Society) Open-source web-based decision analysis framework integrating guidance and tools for a five-step iterative Bayesian decision process for incorporating ecosystem services into environmental decision-making. Developed for and with EPA's Ecosystem Services Research Program.
• SMARTe Open-source web-based decision support system for brownfields encompassing revitalization strategies, environmental modeling, risk assessment, redevelopment options, economic costs, financing, and social costs/benefits. For communities, developers, and agencies planning brownfield redevelopment.

Quantifiable outcome

• Approximate cost savings of $10M estimated for Montana National Guard through UXO risk modeling using expert elicitation and Bayesian analysis
• +2 more outcomes

Named customers11 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability6 records

Feature3 records

Partnerships

Six partnerships are on record, tiered core and minor.

• RTI InternationalcoreStrategic or Co-development PartnerNeptune serves as subcontractor to RTI on EPA OAR/CCD Technical and Outreach Support Services for Greenhouse Gas Program (contract ceiling $23.8M, 2019-2024). RTI is the prime contractor with Neptune providing specialized technical analytical support.
• The Cadmus GroupcoreStrategic or Co-development PartnerNeptune serves as subcontractor to Cadmus on EPA OW Technical and Administrative Support for National Drinking Water Program (2019-2024). Provides technical and analytical support for Safe Drinking Water Act implementation.
• ICFcoreStrategic or Co-development PartnerNeptune serves as subcontractor to ICF on USAID Environmental Compliance Support (ECOS) Contract. Provides training, technical assistance, and knowledge management for USAID environmental sustainability programs (2018-2023).
• Environmental Quality ManagementminorStrategic or Co-development PartnerPartnered with Environmental Quality Management and Environmental Assessment Services as a team for Hanford Site risk assessment work. Three-company small business partnership.
• Environmental Assessment ServicesminorStrategic or Co-development PartnerPartnered with Environmental Assessment Services and Environmental Quality Management for Hanford Site risk assessment. Small business partnership team.
• GoldSim Technology GroupcoreTechnology or IntegrationNeptune is recognized as Certified Solution Providers and Certified Training Providers for GoldSim simulation software. Provides training classes and model construction assistance. Engaged for GoldSim PA model training for South Korea institutions (Korea Institute of Nuclear Safety and Korea Radioactive Waste Agency).

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• ICF International: Major federal environmental and climate consulting firm that is a current Neptune partner (Neptune subcontracts to ICF on the USAID ECOS contract) and competes head-to-head for EPA program support work, making it the most direct comparable in scale and customer overlap.
• RTI International: Research-based consulting nonprofit that is a current Neptune prime-partner (Neptune sub to RTI on the $23.8M EPA OAR/CCD GHG contract) and competes in adjacent EPA statistical and environmental modeling engagements.
• Cadmus Group: Environmental and energy policy consulting firm that partners with Neptune on the EPA OW National Drinking Water Program contract; competes for similar federal environmental and regulatory advisory engagements.
• Gradient Analytics: Small, specialized environmental and human-health risk assessment consulting firm — very similar in size and niche-focus to Neptune — competing for the same environmental risk assessment and toxicology expert-witness engagements.
• Exponent: Scientific and engineering consulting firm that advises on complex environmental, health, and regulatory questions; competes directly with Neptune on statistical litigation support, exposure assessment, and risk-based decision consulting.

Broad incumbents

• Tetra Tech: One of the largest pure-play environmental consulting firms globally; competes with Neptune across EPA, DOE, and DOD environmental services and is a likely prime competitor on IDIQ recompetes.
• AECOM: Global infrastructure and environmental services firm with a large federal environmental practice that competes with Neptune on DOE, DOD, and EPA remediation and modeling programs at significantly larger scale.
• Jacobs Solutions: Major federal and environmental engineering services provider with deep DOE/DOD environmental remediation exposure; competes with Neptune for technical and modeling task orders under large prime vehicles.
• Booz Allen Hamilton: Large federal consulting firm with a growing federal civilian environmental practice serving EPA and DOD; competes with niche players like Neptune for higher-dollar task orders and prime positions.
• Environmental Resources Management (ERM): Global sustainability and environmental consulting leader offering risk assessment, EHS compliance, and remediation services; a broader incumbent competing for the same federal and commercial environmental decision-making engagements.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/neptune-and-company-inc.

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Neptune and Company, Inc.