Overview of Services


  • General chemistry

    • Standard high school curriculum​

    • AP 

    • IB (Diploma Program)

    • Undergraduate

  • Organic chemistry

    • IB ​(Diploma Program)

    • Undergraduate

    • Post-graduate

  • Environmental chemistry

    • Standard high school curriculum (Environmental Science/Studies)​

    • AP ENVS

    • IB (Diploma Program, ESS)

    • Undergraduate

    • Post-graduate


  • Data Analysis

  • Environmental fate and transport (modeling)

  • Human health risk assessment

  • Litigation Support

  • Expert Witness

  • Third Party Review

  • Exposure Assessment

  • Exposure Point Concentrations

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What colleagues are saying

Atlanta, Georgia         jeffrey@dualsciencesolutionsllc.com         
Hand drawing a chart about radon issue -

What clients are saying....

Mr. Michael Tansy, CEO, Tansy Development, Santa Barbara, California.

"Dr. Jeffrey has been an invaluable consultant for chemical contamination assessment and mitigation. He has a thorough understanding of regulatory requirements and a sensitivity to the costs of achieving compliance. Most importantly, "Risk Assessment" provides an EXACT target for compliance and is critical to any financial analysis. I welcome contact to discuss the benefit I experienced."   

Classroom desk and drawn blackboard of c

What administrators are saying....

 Dr. Paul Oberman, Head of School at Robert M Beren Academy
Houston, Texas. Former Head of School, Atlanta Jewish Academy, Atlanta, Georgia.

"Dr. Jeffrey is a bright, knowledgeable science teacher who is committed to reflecting on his own practice and continual improvement. Regardless of how well a lab or lesson goes, he strives to make it even better the next time. Dr. Jeffrey is the rare individual who does not automatically become defensive when asked about his pedagogical choices. He makes the time to get to know his students as people, and in turn they want to perform well in his class."...........

Laboratory glassware and periodic table

What colleagues are saying....

Mr. Devon Bobowski, Head of Science Department, Canadian International School of Hefei, Anhui Province, China.

"Dr. Jeffrey is a consummate educator. He brings a passion for knowledge, a dedication to complete and rigorous understanding, together with genuine interest and care in his students. An individual dedicated to both student success and an impeccable ethical dedication, he is a complete professional. It has been a privilege to work with him and I recommend him completely." 

What students are saying....

Cher, former Grade 10 Science student, Canadian International School of Hefei, Anhui Province, China.

"Dr. David is an extraordinary educator with an outstanding range of knowledge, enthusiasm, and professionalism toward science. He possesses a lot of rare and respectful qualities, I am consistently amazed by his courtesy, unique insights, and scientific rigor. 


As an undoubtedly talented educator, Dr. David is not only able to demonstrate all the concepts in a clear and precise way, but also effectively stimulate students’ interest in the content and guide us to think deeper and wider. It can be said with absolute confidence that his passion for science had hugely and positively influenced my view, consciousness and learning towards science. I am sincerely grateful to have the privilege to be taught by him."