Preserving and Protecting Communities, from Brownfields to Playing Fields  

When it comes to environmental services, H2M is accustomed to tackling tough problems. Like how to remediate a community park located just across the street from a high school—orchestrating the removal of nearly 180,000 tons of contaminated soil using 5,300 dump trucks without causing a single delay or inconvenience to school buses or students. Or how to remedy and redevelop the grounds of an abandoned 17th-century lace mill that’s about to be named a hazardous waste site.

At H2M, we are in the business of meeting challenges, preserving the environment, and protecting communities. We turn brownfields into playing fields, improve indoor air quality, and monitor the safety of groundwater. Whether we are conducting monthly sampling, completing a due diligence evaluation, or designing a chemical storage tank, our responsive and dedicated team will make any environment work (and play).

Paul Lagaaren v2

Paul Lageraaen, P.E., P.G.

Vice President
Discipline Director, Environmental Services

Mr. Lageraaen has over 25 years of experience in environmental engineering including management of environmental site investigations and remediation activities.

His current roles and responsibilities include serving as Discipline Director of Environmental/Forensics/Industrial Hygiene, chairing H2M’s Corporate Safety Committee and serving as a Market leader for the Industry Market. Paul also serves as the client manager under multiple master service agreements with regional electrical utilities.

Paul has a broad range of environmental experience including Phase 1 and Phase II environmental site assessments, spill response, spill related site investigations, wastewater permitting and compliance, air emissions permitting, regulatory compliance auditing, emissions monitoring, soil, waste and wastewater sampling, Stormwater Pollution Prevention Plans, RCRA Hazardous Waste Closure Plans, Health and Safety Plans, and Quality Assurance Project Plans.

Paul holds several licenses and certifications including: Professional Engineer: NY, Professional Geologist: NY, OSHA HAZWOPER, OSHA Construction Safety, Roadway Protection Training, MTA/LIRR. He is an active member of the American Institute of Chemical Engineers. In addition, Paul has published numerous articles as an expert in his field.

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Sui Leong

Sui Y. Leong, P.E., LSRP, LEED AP

Vice President
Deputy Discipline Director, Environmental Services

Ms. Leong has over 30 years of experience in the field of municipal and environmental engineering, hazardous waste management, remedial investigation and design, and regulatory compliance.

Ms. Leong has led H2M’s New Jersey environmental practice in successfully executing projects that include environmental due diligence, Phase I and Phase II environmental assessments, preliminary assessments, site investigations, remedial investigations, remedial design, soil vapor investigation and mitigation, brownfield redevelopment, and wastewater treatment studies and design, just to name a few. She leads a team of experienced Licensed Site Remediation Professionals (LSRPs) that are well versed in all aspects of environmental site management and remedial planning, who can assist the client through the regulatory process and bring sites to successful closure. Ms. Leong serves as a program manager for public agency environmental term contracts and is a client manager for private clients in the real estate and industry sectors.

Ms. Leong is a licensed Professional Engineer and a License Site Remediation Professional (LSRP).  Exhibiting her extensive knowledge of the industry and the market, Ms. Leong has had several articles published and continues to be active in the field through several active memberships of well-known organizations, including the American Institute of Chemical Engineers, Licensed Site Remediation Professional Association, and the CIANJ’s Environmental Business Council.

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  • Environmental Engineering
  • Site Investigation and Remediation
  • Property Transaction Support
  • Soil Vapor Intrusion Investigation and Mitigation
  • Geology/Hydrogeology
  • Soil and Ground Water Characterization
  • Groundwater Modeling / Fate and Transport Modeling
  • Toxic and Hazardous Material/Waste Management
  • CBS/PBS Design, Management, Inspection and Permitting
  • Air Emission Permitting, Pollution Control, Reporting and Monitoring
  • Facility Closures, ISRA/RCRA/Liability Limitation
  • Environmental Permitting
  • Industrial Hygiene
  • Hazmat Surveys
  • Mold, Asbestos and Lead Services
  • Forensics Engineering


Do you know…

H2M’s environmental service covers the following markets listed below, please click “learn more” to view each market.


H2M designs bright, engaging spaces that foster collaboration, encourage discovery, and inspire learners of all ages.

emergency services

H2M’s architects and engineers apply their experiences as emergency service personnel to envision how a facility will be used on a day-to-day basis.


H2M supports reforming America’s energy vision on all types of power generation, transmission and distribution projects by building on our proven success since 1933.


Forensic industry professionals count on H2M engineers and consultants to service both residential and commercial claims.


With deep roots in all of our local communities, H2M designs creative, environmentally responsible projects tailored to each of our client’s needs.

public agency

Our goal is to be considered a trusted adviser to our clients, and extension of their own in-house staff.

real estate

From the due diligence to the grand opening, H2M helps make visions a reality.


Since its inception in 1933, H2M has been a leader in the field of water supply and wastewater treatment; once simply known as Sanitary Engineering.



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