What Mainline Environmental does

Mainline Environmental is a privately held environmental services platform company founded in 2021 by Evolution Capital Partners and headquartered in Mine Hill, New Jersey. The company aggregates four operating subsidiaries — LEW Environmental Services, NAETI, EnviroScience Consultants, and HSE Consulting Services (acquired November 2025) — that collectively deliver environmental testing, inspection, consulting, compliance, remediation, training, and laboratory services to school districts, municipalities, commercial property owners, healthcare institutions, and manufacturing clients across the Northeast United States, primarily New York and New Jersey. Services span asbestos, lead-based paint, mold, indoor air quality, industrial hygiene, Phase I & II Environmental Site Assessments, and occupational health and safety, supported by EPA/NYS laboratory accreditation and a licensed Professional Geologist on staff.

The platform operates as a roll-up under private equity ownership, pursuing a buy-and-build strategy that has produced three acquisitions in four years. Go-to-market is enterprise field sales targeting regulated clients with recurring testing and compliance requirements; revenue is generated through project-based professional services contracts, with a published internal salary band of $32–$35 per hour for EH&S Project Manager roles indicating the underlying labor cost structure. The company employs more than 50 associates and has built a leadership team recruited specifically for PE-backed integration: CEO Dan McGowan (joined December 2022), COO and EnviroScience founder Glenn Neuschwender, VP of Finance Mabel Larsen (joined January 2023), and VP of Sales & Marketing Hetal Raythattha.

Mainline's underlying technology is fundamentally a licensed-services platform rather than a software platform. Competitive differentiation rests on regulatory accreditations (NYSDEC, EPA/NYS environmental laboratory, NYS Asbestos Training Center), licensed professionals, the NAETI training catalog of more than 60 courses, and cross-subsidiary cross-selling. There is no disclosed AI, software, or proprietary technology stack; the business is a people- and license-intensive professional services operation consolidating regional environmental firms.

Name

Mainline Environmental

Legal name

Mainline Environmental

Website

https://mainlineenvironmental.com

Company type

Private

Founded year

2021

Operating status

Operating

Headcount range

11–50 employees

Short description

Mainline Environmental is a privately held environmental services platform consolidating four Northeast-based subsidiaries — LEW Environmental, NAETI, EnviroScience Consultants, and HSE Consulting Services — that deliver testing, compliance, remediation, training, and laboratory services to school districts, municipalities, property owners, and commercial clients in New York and New Jersey.

Ownership category

akta.pro rank

Product category

Environmental Consulting Services

NAICS

Environmental Consulting Services (541620), Testing Laboratories and Services (54138)

SIC

Services-Testing Laboratories (8734)

akta.pro primary industry

Asbestos/Lead/Mold Inspection, Testing & Consulting (BPALALAD)

akta.pro secondary industry

Portfolio & Multi-Site Environmental Risk Screening (Desktop / Rapid Risk Assessments) (EUAHAEAK)

Keywords

• Environmental consulting services
• Asbestos testing remediation
• Indoor air quality testing
• Industrial hygiene services
• Environmental site assessment

Headquarters

HQ city

Township Of Washington

HQ country

United States

HQ region

North America

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Environmental Consulting Services: Professional services revenue generated through environmental inspection, consulting, testing, and remediation services provided to commercial clients, government entities, and educational institutions. Services include Phase I & II Environmental Site Assessments, asbestos surveys, lead-based paint inspections, mold assessments, and industrial hygiene sampling.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

Mainline Environmental provides comprehensive environmental testing, consulting, compliance, remediation, training, and laboratory services to property owners, school districts, municipalities, manufacturers, and healthcare institutions. The company operates through four wholly-owned subsidiaries — LEW Environmental, NAETI, Enviroscience Consultants, and HSE Consulting Services — that together deliver asbestos and lead-based paint management, mold and indoor air quality services, Phase I & II environmental site assessments, subsurface investigations, industrial hygiene, occupational health & safety consulting, and more than 60 accredited training courses.

Product overview

Mainline Environmental operates as a platform company providing comprehensive environmental solutions through its family of subsidiaries. The platform encompasses four integrated service brands: LEW Environmental (environmental inspection, consulting, design, remediation and training), NAETI (occupational training with 60+ courses), Enviroscience Consultants (asbestos, lead, mold, indoor air quality, subsurface investigations), and HSE Consulting Services (industrial hygiene, occupational health & safety, laboratory analysis). Together these companies deliver testing, compliance, remediation, training and laboratory services to property owners, school districts, municipalities, and commercial clients.

Differentiator

Problem solved

Functional benefit

Brands

• LEW Environmental Services: Environmental inspection, consulting, design, remediation and training services to residential, governmental, and commercial clients.
• NAETI
• Enviroscience Consultants

Products and services

• LEW Environmental Services Environmental inspection, consulting, design, remediation, and training services for residential, governmental, and commercial clients; addresses environmental testing, consulting, training, and remediation service requirements through experienced staff.
• NAETI Training Services Training services offering more than 60 initial and refresher courses covering asbestos, lead, indoor environmental quality, health and safety, construction, personal protection, hazardous material handling and clean-up, confined space/lock-out tag-out, right to know, and customized training.
• Enviroscience Consultants Environmental consulting firm specializing in asbestos, environmental remediation, lead-related issues, indoor air quality (including New York State licensed mold inspections), subsurface investigations, construction inspection and testing, occupational training, and industrial hygiene.
• HSE Consulting Services Multidisciplinary environmental, health and safety consulting firm offering industrial hygiene, asbestos and mold consulting, indoor air quality testing, occupational health and safety support and oversight services, training programs, and laboratory analysis.

Named customers5 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• HSE Consulting ServicescoreStrategic or Co-development Partner · 19 November 2025Acquisition completed November 2025. HSE Consulting Services, LLC is a multidisciplinary environmental, health and safety consulting firm founded in 1997, based in Cicero, New York. The acquisition enhances Mainline's capabilities in safety, industrial hygiene, indoor air quality testing, and laboratory analysis, providing clients with unified EHS risk management services.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• GHD: Global environmental, engineering, and advisory firm with strong U.S. environmental services practice. Directly comparable in site assessment, contamination, and asbestos/lead services, with materially larger resources and international footprint.
• Terracon Consultants: Large national environmental, geotechnical, and materials testing consulting firm. Overlaps directly with Mainline's Phase I/II ESA, asbestos/lead/mold inspection, and construction inspection/testing services, but serves multi-state enterprise and public clients.
• Haley & Aldrich: National environmental and geotechnical engineering consultancy. Comparable service portfolio (site assessment, building sciences, industrial hygiene) with similar focus on real estate, education, and government clients, but at materially larger scale.
• Montrose Environmental Group: Public, nationally diversified environmental testing, advisory, and remediation firm. Directly comparable service lines (asbestos, lead, mold, IAQ, site assessment) but operates at far greater scale across multiple geographies.
• SCS Engineers: National environmental engineering firm focused on solid waste, contaminated sites, and environmental due diligence. Overlaps with Mainline's site assessment and remediation services, with comparable government and commercial client mix.
• Brown and Caldwell: National environmental engineering and consulting firm focused on water, waste, and site remediation. Comparable regulated-environment service lines and government/municipal customer base, though oriented more toward infrastructure projects.

Direct peers

• Civil & Environmental Consultants (CEC): Privately held engineering and environmental consulting firm with comparable Phase I/II ESA, asbestos/lead, and industrial hygiene offerings. Similar mid-market positioning across real estate, education, and industrial clients with a multi-state footprint.
• Apex Companies: PE-backed (Denham Capital) environmental consulting, engineering, and compliance services platform. Closely analogous as a roll-up of environmental testing and consulting firms with similar customer mix and M&A-driven growth model.
• Environmental Design International (EDI): Mid-sized environmental and infrastructure consulting firm providing site assessment, asbestos/lead/mold, and industrial hygiene services. Comparable scale, service mix, and Midwest/Northeast regional focus to Mainline.
• Trinity Consultants: PE-backed (Oaktree) EHS consulting firm specializing in industrial hygiene, air quality, and regulatory compliance. Highly comparable business model, customer verticals (manufacturing, government), and PE-backed growth trajectory to Mainline.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/mainline-environmental

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries4 records

Funding overview

Funding rounds

Investors

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

M&A1 record

Investments

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

Frequently asked questions about Mainline Environmental