About Brooks Enviro

We at Brooks Enviro have experience in handling many environmental concerns.  Mr. Kalonji Diyoka, Dr. Mark Granville, Dr. Margaret Brooks, Mr. Michael Zubarev, Mr. Long Thai, and Mr. Keith Brooks are members and senior consultants.  In addition to full time staff, we employ associates, scientists and engineers including Licensed Environmental Professionals (LEPs) who offer technical support on a wide range of activities.


  • Indoor air quality

  • Asbestos management

  • Mold and bacteria control

  • Drinking water analysis

  • Lead testing

  • Tank and soil testing

  • Radon testing

  • Industrial hygiene

  • OSHA compliance

  • Environmental training

  • Storm water permits

  • Discharge permits

  • Phase I, II, III, IV real estate investigations

Senior Staff

Margaret Y. Brooks, Ph.D.-Member

 Margaret Brooks holds a Ph.D. in analytical chemistry from the University of Connecticut, and an M.S. from the University of Bridgeport and a B.A. from Western Connecticut State College.


After a career in cancer research at Sloan Kettering Institute, Walker Laboratory, in 1976 she joined the company as a consultant in industrial hygiene and analytical methods.


In 1984, she organized the company's analytical chemistry laboratory.  The laboratory offered analytical support to consulting activities in indoor air quality, asbestos management, environmental site assessment and remediation, OSHA and EPA monioring requirements, and real estate transfers.t's easy.

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Keith Brooks, C.S.P., Emeritus - Member

Keith Brooks holds a B.A. in Liberal Arts from Duke University with additional studies in industrial hygiene and science.  Following a tour as a U.S. Naval Officer, he spent eight years as a Safety Engineer with United States Steel.  He worked in industrial relations with American Standard, the Chemstrand Corporation and St. Regis Paper Company before starting Brooks Enviro in 1971. a


While Mr. Brooks was corporate manager of safety and employee relations at Chemstrand, the company set a world record for injury-free man-hours in the synthetic fiber industry.  Later he established a safety incentive program, which set a company all-time record in the banking industry.

Mr. Brooks is a Certified Safety Professional Emeritus - examination certified by the Board of the American Society of Safety Engineers.  He has Asbestos Building Inspector, Management Planner and Contractor Supervisor qualifications as well.

Kalonji Diyoka - Member

IKalonji Diyoka holds a Bachelor of Science, Chemical/Material Engineering Degree from the University of Connecticut.  He has over twenty years of environmental experience.


At Brooks Enviro he works as an environmental consultant. He is proficient in atomic absorption, microscopy, and gas chromatography.  In administration he is inolved in financial matters, pricing, and marketing.re to add your own

Mr. Diyoka is licensed by the State of Connecticut as an Asbestos Building Inspector.  He is also certified as Project Monitor, Hazardous waste Operator, and has completed the requirements of the USEPA Radon Management Proficiency Program.

Dr. Mark Granville, Ph.D. - Member

Mark Granville holds a Ph.D. in physical chemistry and an M.A. in physical science from Harvard University and a B.S. in chemistry from Stanford University.  He was a National Institute of Health Post-doctoral fellow, Department of Chemistry, Wesleyan University, and is a member of Phi Beta Kappa.  

After seven years as an Assistant Professor of Chemistry at the University of Connecticut, Dr. Granville joined Brooks Enviro as a Senior Consultant where he has distinguished himself by becoming an authority on asbestos management.  He has consulted with many employers, including schools, and has supervised turn-key projects such as building inspection, project design, specification writing, contractor selection, abatement supervision, monitoring and laboratory analysis through final clearance.

Dr. Granville is an EPA and State of Connecticut AHERA accredited and licensed asbestos inspector, management planner, project designer, site supervisor and State of CT certified lead inspector.  He is active in phase I, II, III assessments under the Connecticut Transfer Act governing real estate transactions. 

Theodore J. Stevens, PE, LEP - Contractor

Theodore J. Stevens holds a B.A. degree in geology from Wesleyan University, and an M.S. degree in environmental engineering from the University of New haven.  He studied civil engineering, also, at the University of New Haven.

Prior to forming his own consulting company in 1998, he worked in the capacities of geologist, hydrogeologist, engineer, environmental analyst and construction manager for several companies and the government, including the Connecticut DEP and regional water authority.


He became a Licensed Environmental Professional (LEP) in the State of Connecticut in 1986, and Licensed Professional Engineer (PE), also in Connecticut, in 1987.


Mr. Stevens serves Brooks Enviro on those projects requiring a Licensed Environmental Professional, and, occasionally, as a Licensed Professional Engineer.  He brings to our clients benefits of over thirty years experience in environmental consulting specializing in site assessments and remediation. 

Michael Zubarev - Member

Michael Zubarev holds a Bachelor's degree in chemistry from Latvia University.  He took courses, also , at the University of Organic Syntheses in applied instrumental chromatography.

Before coming to the United States, he worked as Laboratory Assistant at Riga Chemical College and at a military hospital in Estonia for five years.

His experience included work on waste water analysis, determination of metals, pesticides and oil products in soil and air.  His skills include IR Spectrophotometry, UV Spectrometry, GC-HPLC and XRF.

He is fluent in Russian and Czech Languages.

Mr. Zubarev began as a Laboratory Chemist with Brooks Enviro specializing in atomic  absorption analysis, working also as a consultant in lead detection, indoor air quality and water quality.

His licenses include: Connecticut - Asbestos Project Monitor/Building Inspector, Connecticut - Lead inspector, New York -  Asbestos Building Inspector, New York - Mold Assessor, Radon Measurement Consultant, Certified Mold Remediation Professional

Long Thai

Long Thai joined Brooks Environmental Consulting in 2016 as a consultant and office manager.  He is a native of Viet Nam who came to this country as a child with his family. 

Long has a bachelor of science degree in Electrical Engineering from the New York Institute of Technology, and has done graduate study toward his Master's Degree in Environmental Technology.  He has had training in wastewater treatment, groundwater hydrology, hazardous waste remediation, solid waste management, waste to energy conversion air pollution, toxicology, OSHA and RCRA.  Before coming to Brooks Environmental, he worked for two other environmental companies and was responsible for overseeing several large soil and ground water remediation projects.  We consider Long to be a great asset to the Company and expect him to enhance our ability to do Phase II and Phase III work for real estate transactions..

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