Our Team
Norman Weiss
Karika Bridgers
Karika Bridgers
Principal Consultant and Founder
B.S., Biology, M.A., Geography and Land Use
Norm Weiss has over 40 years of professional experience. He formerly served as Assistant Director with the Arizona Department of Environmental Quality (ADEQ) where he directed statewide programs for hazardous waste, emergency response, and toxic site remediation.
Principal Consultant and Founder
B.S., Biology, M.A., Geography and Land Use
Norm Weiss has over 40 years of professional experience. He formerly served as Assistant Director with the Arizona Department of Environmental Quality (ADEQ) where he directed statewide programs for hazardous waste, emergency response, and toxic site remediation. Prior to opening his current practice, Mr. Weiss served as a Managing Senior for two national environmental consulting firms. He holds several professional designations and is a Certified Environmental Manager in Nevada. He is also a Seminar Instructor at the Ira Fulton Schools of Engineering, at Arizona State University Polytechnic Campus.
Karika Bridgers
Karika Bridgers
Karika Bridgers
Senior Consultant and
Operations Manager
B.S. and M.S., Technology, Environmental and Emergency Management
Karika has worked with the firm since 2009. She has experience managing environmental compliance programs in large manufacturing facilities such as; 112r General Duty Clause, Spill Prevention Control and Countermeasure, chemical audi
Senior Consultant and
Operations Manager
B.S. and M.S., Technology, Environmental and Emergency Management
Karika has worked with the firm since 2009. She has experience managing environmental compliance programs in large manufacturing facilities such as; 112r General Duty Clause, Spill Prevention Control and Countermeasure, chemical audits, hazard assessment, process equipment decontamination approvals, and hazardous waste equipment inspections and monitoring. Karika has performed extensive scientific research on topics including; water treatment, materials science, U.N. Minimata Convention on Mercury, and emergency communications. A skilled technical writer, Karika has authored and co-authored numerous published scientific articles and technical reports.
Richard Dockery
Karika Bridgers
Richard Dockery
Senior Consultant and
Field Services Manager
B.S. and M.S., Technology, Environmental and Emergency Management
Richard has worked with the firm since 2011. He has gained diverse experience working with large manufacturing facilities on various EHS programs. Richard has coordinated with stakeholders across several departments to audit, refin
Senior Consultant and
Field Services Manager
B.S. and M.S., Technology, Environmental and Emergency Management
Richard has worked with the firm since 2011. He has gained diverse experience working with large manufacturing facilities on various EHS programs. Richard has coordinated with stakeholders across several departments to audit, refine, and improve compliance programs. He has assisted in the development and revision of compliance records, reports and plans including; RCRA Hazardous waste, Spill Prevention Control and Countermeasure, Stormwater Pollution Prevention Plans, Toxic Release Inventory, refrigerant management, equipment safety procedures and facility risk assessments.
Gavrielle Orman
Karika Bridgers
Richard Dockery
Consultant and
Compliance Manager
P.E., B.S. and M.S., Environmental Engineering
Gav joined the team in 2023. Gav is a licensed professional engineer in the environmental engineering sector with almost 10 years of experience in wastewater and hazardous waste compliance. Prior to this role, Gav was a hazardous waste permit writer and pollutio
Consultant and
Compliance Manager
P.E., B.S. and M.S., Environmental Engineering
Gav joined the team in 2023. Gav is a licensed professional engineer in the environmental engineering sector with almost 10 years of experience in wastewater and hazardous waste compliance. Prior to this role, Gav was a hazardous waste permit writer and pollution prevention engineering specialist focused on compliance at hazardous waste management facilities, minimization of hazardous waste generation, recycling of hazardous waste, and recordkeeping improvements. Currently, Gav also works with the Arizona State University as an Assistant Teaching Professor under the Ira A. Fulton Schools of Engineering.
Samuel Weiss
Samuel Weiss
Samuel Weiss
Technician
A.A. and A.G.S. Paradise Valley Community College
Samuel has worked for the firm during the summers since 2011 and has served as an environmental technician since 2017. Services have included assistance in various onsite training classes and development of game-based training materials. Industrial experience includes EPCRA Tie
Technician
A.A. and A.G.S. Paradise Valley Community College
Samuel has worked for the firm during the summers since 2011 and has served as an environmental technician since 2017. Services have included assistance in various onsite training classes and development of game-based training materials. Industrial experience includes EPCRA Tier II chemical inventories and data entry, RCRA (hazardous waste) Subpart BB air monitoring, stack test record keeping and related services.
Emily Hinkle
Samuel Weiss
Samuel Weiss
Consultant
B.A., Global Agribusiness and M.S., Environmental and Resource Management
Emily has worked for the firm since 2020. She has performed research on environmental subjects including agricultural best management practices, water management, and environmental management planning for municipalities. Emily has worked with the City of
Consultant
B.A., Global Agribusiness and M.S., Environmental and Resource Management
Emily has worked for the firm since 2020. She has performed research on environmental subjects including agricultural best management practices, water management, and environmental management planning for municipalities. Emily has worked with the City of Glendale to create a management plan for the city’s above ground chemical storage tanks, and she worked with the City of Peoria on a project to create water sustainability plans for the future development of the city. Emily currently coordinates transportation travel reduction planning programs for our industrial clients.
Tommy Lowe
Samuel Weiss
Tommy Lowe
Consultant
B.S., Environmental Science, A.A.S. Environmental Engineering Technology
Tommy joined our team in 2023 after moving to Arizona from Dayton, Ohio. With over 10 years of experience, he has worked as an industrial chemistry lab manager in the metal finishing industry manufacturing for aerospace, medical, automotive, and military
Consultant
B.S., Environmental Science, A.A.S. Environmental Engineering Technology
Tommy joined our team in 2023 after moving to Arizona from Dayton, Ohio. With over 10 years of experience, he has worked as an industrial chemistry lab manager in the metal finishing industry manufacturing for aerospace, medical, automotive, and military fields. He worked with management of various departments including safety manager and director of compliance to implement new products and processes to ensure compliance with government regulations and industry specifications. He has experience managing hazardous chemicals, inventory, data and has been part of an emergency response team. Tommy also has expertise in troubleshooting chemical manufacturing processes, laboratory instrumentation, and wastewater characterization.
Jordan Coulam
Austin Bridgers
Austin Bridgers
Consultant
B.S., Microbiology and M.S., Environmental Engineering
Jordan joined N. Weiss Associates in March 2024. Jordan has experience in developing and administering laboratory hazards awareness training and chemical inventory, as well as data collection and analysis. Jordan will support our clients as a Travel Coordinator with the Maric
Consultant
B.S., Microbiology and M.S., Environmental Engineering
Jordan joined N. Weiss Associates in March 2024. Jordan has experience in developing and administering laboratory hazards awareness training and chemical inventory, as well as data collection and analysis. Jordan will support our clients as a Travel Coordinator with the Maricopa County Travel Reduction Program. They will help clients meet and exceed Maricopa County ordinances to reduce air pollution in the valley.
Austin Bridgers
Austin Bridgers
Austin Bridgers
Administrative Services Officer and Environmental Field Associate
Austin joined NWA in April 2024. He supports all administrative functions at NWA. For 8 years, Austin served in the U.S. Army as a non-commissioned officer. He brings valuable experience working in various operations providing planning and administrative functions including
Administrative Services Officer and Environmental Field Associate
Austin joined NWA in April 2024. He supports all administrative functions at NWA. For 8 years, Austin served in the U.S. Army as a non-commissioned officer. He brings valuable experience working in various operations providing planning and administrative functions including but not limited to logistics, training, project management and contracts management. At NWA Austin will be aligning our administrative systems and processes to enhance efficiencies within a virtual office. He supports administrative service functions that relate to accounting, payroll, project management, human resources, marketing, and cyber security.
Drew Cesarini
Austin Bridgers
Drew Cesarini
Safety Officer
B.S., Construction Management and Technology & Exercise and Wellness
Drew joined our team in September 2025. He is a Construction Management student channeling his passion for helping people into NWA’s relationship-driven compliance work. Building on a foundation in injury prevention and wellness, he has designed and directe
Safety Officer
B.S., Construction Management and Technology & Exercise and Wellness
Drew joined our team in September 2025. He is a Construction Management student channeling his passion for helping people into NWA’s relationship-driven compliance work. Building on a foundation in injury prevention and wellness, he has designed and directed corporate programs emphasizing ergonomics and workplace safety. Drew supports NWA’s safety programs, further strengthening our culture of health and safety. He is advancing our Client Heat Safety Program as well as expanding research on practical corporate wellness initiatives that reduce risk and create healthy workplace habits.