What Stone Environmental Inc does

Stone Environmental Inc is a Montpelier, Vermont-headquartered environmental consulting firm founded in 1995, operating internationally with a European office in Bartholomäberg, Austria. The company is structured as a 100% employee-owned ESOP and serves private sector clients (crop protection, commercial developers, utilities, food processors), government agencies (federal, state, local/regional planning), and NGOs/nonprofits (watershed groups, university research centers, community organizations). It delivers services across eight practice areas: Agricultural Stewardship, Agrochemical Fate & Exposure, Environmental Assessment & Remediation, Environmental Systems Modeling, Geospatial & Data Solutions (GIS), Water Quality, Regulatory Support, and Quality Assurance.

The firm's core technology stack combines Esri's ArcGIS platform (across Pro, Online, Hub, Dashboards, StoryMaps, Field Maps, and Survey123, with a System Ready Specialty partnership designation) with proprietary environmental modeling tools, most notably the APCOAT (Automated Probabilistic Co-Occurrence Assessment Tool) for pesticide risk assessment, and an in-house fluorometry laboratory that has surpassed 15,000 samples analyzed. The business is project-based, professional services consulting with quote-based pricing for B2B engagements; revenue mechanics are driven by direct consulting engagements, government contract vehicles, and channel partnership through the Esri ecosystem. Notable deliverables include custom web applications such as Farm-PREP, the Vermont Partners Database, the Vermont Transportation Flood Resilience Planning Tool, and Access Montpelier, alongside GLP-compliant field study programs supporting EPA pesticide registration work and 250+ Brownfield site investigations.

Name

Stone Environmental Inc

Legal name

Stone Environmental, Inc.

Website

https://stone-env.com

Company type

Private

Founded year

1995

Operating status

Operating

Headcount range

51–100 employees

Ownership category

akta.pro rank

Headquarters

HQ city

Montpelier

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Environmental Consulting Services: Professional consulting services for environmental assessment, remediation, water quality, agricultural stewardship, and regulatory support. Services are project-based and customized to client needs across government, private sector, and NGO markets.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels6 records

Core offering

Stone Environmental is an environmental consulting firm that provides scientific tools, information, and analyses to help clients solve complex environmental challenges. The firm delivers professional services across eight core practice areas: Agricultural Stewardship, Agrochemical Fate & Exposure, Environmental Assessment & Remediation, Environmental Systems Modeling, Geospatial & Data Solutions (GIS), Water Quality, Regulatory Support, and Quality Assurance. It also develops proprietary software tools (such as APCOAT) and web-based applications that support environmental decision-making for government, private sector, and NGO clients.

Product overview

Stone Environmental is an environmental consulting firm offering professional services organized around eight core service areas: Agricultural Stewardship, Agrochemical Fate & Exposure, Environmental Assessment & Remediation, Environmental Systems Modeling, Geospatial & Data Solutions (GIS), Water Quality, Regulatory Support, and Quality Assurance. These service areas operate as distinct but interconnected practice areas, with environmental systems modeling, GIS solutions, and water quality often overlapping across client projects. The company also develops specialized software tools (APCOAT) and web applications (Vermont Partners Database, Farm-PREP, Transportation Flood Resilience Planning Tool, Access Montpelier) to support environmental decision-making for government and private sector clients. The firm operates as a 100% employee-owned company with an international client base.

Differentiator

Problem solved

Functional benefit

Products and services

• Agricultural Stewardship Provides edge-of-field and conservation practice monitoring and agricultural conservation practice design to support sustainable farming for crop producers, conservation districts, and state agencies.
• Agrochemical Fate & Exposure Offers pollinator services, risk assessment, environmental modeling, field studies, AgChem spatial analysis, and quality assurance for agrochemical products, primarily for crop protection companies seeking EPA registration support.
• Environmental Assessment & Remediation Delivers brownfield redevelopment, remedial investigation and feasibility studies, PCB assessment and remediation, remedial design and implementation, environmental due diligence, development soil management, vapor intrusion assessment, area-wide planning, and emergent contaminants investigation for site owners, developers, and government agencies.
• Environmental Systems Modeling Provides agrochemical fate and exposure modeling, hydrology and water quality modeling, pesticide risks to endangered species assessments, urban hydrologic systems analysis, climate change resilience modeling, custom environmental model development, probabilistic modeling/uncertainty analysis, PFAS fate and transport evaluation, APCOAT tool development, and computational fluid dynamics for regulatory, agricultural, and government clients.
• Geospatial & Data Solutions (GIS) Offers spatial analysis and statistics, application development, data discovery and aggregation, and data visualization using ArcGIS technology for environmental decision-making by government agencies, planners, and private clients.
• Water Quality Provides stormwater assessment and permitting, watershed planning, water quality and flow monitoring, illicit discharge detection and elimination, community and commercial wastewater solutions, stormwater retrofit design, TMDL implementation support, and stream and floodplain restoration for municipalities, watershed groups, and developers.
• Regulatory Support Offers expertise in federal and state regulations and litigation support for environmental compliance matters for private companies and government clients.
• Quality Assurance Provides GLP (Good Laboratory Practice) program management and quality assurance services for regulatory environmental and agrochemical field studies for crop protection and other EPA-regulated clients.
• Automated Probabilistic Co-Occurrence Assessment Tool (APCOAT) Custom proprietary environmental modeling tool for automated probabilistic co-occurrence assessment used in evaluating pesticide risks to species for agrochemical and regulatory clients.
• Fluorometry Lab Services Specialized laboratory service for fluorometry sample analysis, having surpassed 15,000 fluorometry samples analyzed and conducted 13 spray drift deposition studies using tracer dyes for agrochemical and spray drift research clients.
• Farm Phosphorus Reduction Planner (Farm-PREP) Web-based tool aimed at reducing agriculture's impact on water quality by supporting farm phosphorus management decisions for farmers, conservation districts, and watershed groups.
• Vermont Transportation Flood Resilience Planning Tool Web-based application that identifies bridges, culverts, and road embankments within watersheds vulnerable to flood damage, estimates risk, and offers mitigation measures for transportation agencies and state government.
• Access Montpelier Community engagement website built on Esri's ArcGIS Hub technology for the City of Montpelier, allowing citizens to access and contribute to city government information.

Quantifiable outcome

• Conducted 13 spray drift deposition studies totaling 200+ individual study treatments
• +3 more outcomes

Named customers6 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

Feature4 records

Partnerships

Five partnerships are on record, tiered core, major and minor.

• EsricoreTechnology or Integration · 11 January 2026Esri is a strategic technology partner providing ArcGIS platform capabilities. Stone Environmental is an Esri Partner with System Ready Specialty designation, utilizing ArcGIS Pro, ArcGIS Online, ArcGIS Hub, ArcGIS Dashboards, ArcGIS StoryMaps, ArcGIS Field Maps, and Survey123 to create solutions for clients.
• Franklin County Natural Resources Conservation DistrictcoreStrategic or Co-development PartnerCollaborative partner on watershed planning and restoration projects including the Johnsons Mill Dam removal study spanning four years of monitoring river response to dam removal.
• Vermont Community Broadband BoardmajorImplementation/ SI/ Consulting PartnerStone provided GIS support for Vermont's broadband expansion initiative, which resulted in $228.9 million in federal funding for the state.
• Constant ContactminorOthersThird-party email marketing service provider used for sending newsletters and updates to subscribers.
• Intrinsik CorpcoreStrategic or Co-development PartnerStone-Intrinsik team co-develops and delivers training courses such as the 'Modeling Ecological Risks of Agricultural Pesticides' course and presents together at professional conferences (SETAC, ACS).

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Ramboll: European-headquartered engineering and environmental consultancy with strong water, climate, and contaminated site practices; directly comparable especially given Stone's Austria office serving EU chemical exposure work.
• Anchor QEA: Mid-size environmental and water resources consulting firm specializing in contaminated site cleanup, environmental modeling, and remedial design—directly comparable specialty focus and approximate scale to Stone Environmental.
• GHD: Global environmental engineering and consulting firm with water, agribusiness, and natural resources practices; comparable mid-tier peer competing for similar agchem and water-quality mandates.
• Haley & Aldrich: Mid-size environmental and geotechnical engineering consultancy with brownfields, water resources, and environmental due diligence practices—strong parallel to Stone's service mix and project-scale work.
• ERM (Environmental Resources Management): World's largest pure-play environmental, health, and safety consultancy covering contaminated sites, water, climate, and regulatory advisory—direct competition for Stone's EPA, brownfield, and agchem-fate work.

Broad incumbents

• Stantec: North American engineering, environment, and infrastructure consultancy; broad incumbent with water, environmental remediation, and GIS practices competing for similar state/local mandates.
• Tetra Tech: Largest publicly traded water and environment consulting firm globally; operates across the full service spectrum where Stone competes (water quality, modeling, ESG) at a much larger scale.
• Arcadis: European-headquartered design and consultancy with deep water, environment, and resilience practices; broad incumbent competing for similar climate resilience and water quality mandates.
• AECOM: Global infrastructure and environmental services conglomerate; competes for major multi-year federal/state environmental contracts Stone also pursues, with vastly greater capital and headcount.
• Jacobs Solutions: Global professional services firm with Critical Mission Solutions and PA Consulting segments covering environmental compliance, remediation, and federal climate work—overlaps with Stone's government practice.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/stone-environmental

Revenue estimate

Valuation estimate

Number of profiles

Profiles12 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 Stone Environmental Inc