About Us

State and Federal Certifications held by GHG Engineering

Maryland Department of Transportation Certifications (# 17-100)
Minority Business Enterprise (MBE), Small Business Enterprise (SBE), Disadvantaged Business Enterprise (DBE)

Federal Government

Minority-Owned Business, Self CertifiedSmall Disadvantaged Business, HispanicAmerican OwnedUEI: TVPQHMYHVH13CAGE: 9JYY3

NAICS Codes

NAICS 541690 - Energy Consulting Services NAICS 541370 - Geographic Information System GIS Base Mapping ServicesNAICS 541614 - Efficiency Management Consulting ServicesNAICS 541620 - Environmental Consulting ServicesNAICS 541330 - Environmental Engineering Services

Certifications/Accreditations Held by GHG Engineering’s Consultants

Licensed Professional Engineer – Environmental, Maryland and Ohio. Certified Energy Manager – American Association of Energy Engineers. Construction Quality Management for Contractors Certification – US Army Corps of Engineers
Maryland Small Business Reserve # SB25-076534

CONSULTANTS

Manager and Engineer | Licensed Professional Engineer (PE), Certified Energy Manager

John Mosheim is a manager and an engineer at GHG Engineering, where he is responsible for delivering high-performance outcomes for projects and the firm’s Clients. John is a licensed professional engineer and certified energy manager with over 30 years of experience in industrial energy and greenhouse gas reduction projects, water treatment and reuse, chemical separations, mining, environmental damage investigations, and litigation support. His work includes leading socioeconomic impact evaluations in support of a state agency'sn scale solar PV, battery energy storage, and transmission line projects, where he focuses on transportation, agency's scale solar PV, battery energy storage, and transmission line projects, where he focuses on transportation, airspace, glare, and GHG impacts. John has managed QA construction programs for Amtrak’s B&P Tunnel track rehabilitation project in Baltimore, MD, and large water filtration plant modernization projects. John has served as a third-party process engineer for biogas purification projects under the U.S. EPA’s Renewable Fuel Standard. His carbon energy expertise also includes emission reduction verification of public transportation systems and boiler systems. In the past, John designed more than 30 industrial water recycling, chemical purification, and metals recovery systems for industry. He also performed environmental work at a former nuclear fuel enrichment facility in KY. John has degrees in Chemical Engineering, Geology, and Management, renewable energy planning from the World Bank Institute, alongside specialized training in GIS, quality assurance, and generative AI from MIT.

GIS Technical Lead | Geospatial and Socioeconomic Analyst

Monica is a geospatial and socioeconomic analyst with over eight years of experience in energy, transportation, and U.S. Department of Defense projects. At GHG Engineering, she spearheads state-level infrastructure licensing processes through GIS modeling, socioeconomic impact evaluations, and documentation development. Monica’s recent projects include contributing to state agency reviews of a 2,000 Acre 300 MW solar PV project and notable transmission line projects where she integrated spatial data analytics, LiDAR, and expert visibility modeling into land use, infrastructure construction, glare analysis, and data-driven property value impact assessments in California, Hawaii, and Maryland. She is proficient in ArcGIS Pro, ArcGIS Online, Survey123, AutoCAD, and geospatial conversions, bringing a data-driven approach to regulatory compliance and infrastructure planning. Monica has extensive experience in managing complex geospatial datasets, supporting field logistics, and ensuring quality assurance for federally funded transportation projects. She holds a B.A. in Maritime Studies with a GIS certificate and is currently pursuing an M.S. in Geographic Information Systems Administration, expected in spring 2026. She also holds a Top Secret–SCI security clearance and is a member of Gamma Theta Upsilon – International Geographical Honor Society

Senior Technical Consultant | Greenhouse Gas and Renewable Energy Specialist

Dr. Al Chan is a greenhouse gas and renewable energy specialist with over 30 years of experience supporting emissions reduction, energy transition, and international infrastructure projects. He currently provides senior technical leadership on low-carbon energy systems, project feasibility, and emissions reduction performance assessments. , including solar PV, landfill gas, biogas, small hydroelectric power, coal mine methane, and fuel-switch systems. Dr. Chan managed operations for a 2.5-MW fixed tilt solar installation and a 6-MW landfill gas-to-electricity facility in El Salvador, achieving 95% system uptime while managing safety, performance reporting, and insurance KPIs. He also directed the construction and commissioning of a $10 million biogas-to-power facility operating under a national grid power purchase agreement.
Dr. Chan previously served as Vice President and board member of AES Carbon Exchange, where he reviewed sale transactions, annual budgets, and ensured adequate financial reserves for compliance operations. His regulatory and scientific experience includes long-standing collaborations with Brookhaven National Laboratory and the USDA’s National Laboratory for Agriculture and the Environment, where he contributed to multidisciplinary research under DOE and USDA CRADAs focused on carbon sequestration and greenhouse gas emissions monitoring. He has worked extensively with CDM and UNFCCC frameworks, supported ISO certification processes, and advised on clean energy asset management in global contexts. Dr. Chan brings advanced skills in Python, big data analytics, and applied machine learning. He holds a Ph.D. in Microbiology and a B.S. in Biochemical Science, and is fluent in Cantonese, Dutch, and Spanish.
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