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David M. Nielsen
is President of The Nielsen Environmental
Field School and Nielsen Ground-Water Science,
Inc. He is a Certified Professional Geologist
(AIPG #5040), a Professional Hydrogeologist
(AIH #991), a Certified Ground-Water Professional
(AGWSE #179) and a Certified/Licensed/Registered
Professional Geologist in 7 states (AK, AR,
DE, FL, IN, SC, TX). He has more than 30 years
of experience in ground-water and environmental
consulting, training and research. He has
managed ground-water contamination investigations,
environmental site assessments, ground-water
monitoring and sampling programs, petroleum
hydrocarbon spill investigations and remedial
projects across the U.S. David has also developed
curriculum for and instructed: undergraduate,
graduate and continuing education courses
in ground-water science at Wright State University;
a one-year Hydrogeologic Training Program
for the Environmental Response Division of
the Michigan Department of Environmental Quality;
Technology Transfer workshops for the U.S.
EPA; and Waste Management, Inc.’s Landfill
University. He has instructed more than 400
ground water and environmental science short
courses and workshops for consulting firms,
regulatory agencies, industrial concerns,
the Department of Defense, the U.S. EPA, trade
and professional organizations, educational
institutes and universities in the U.S., England,
Canada, Australia, Guatemala and Mexico.
David is a member and former Chairman of ASTM
Subcommittee D-18.21 on Ground-Water and Vadose
Zone Investigations, a consultant to the U.S.
EPA Science Advisory Board, a member of the
U.S. Department of Defense SERDP/ESTCP Peer
Review Panel, and an advisor to the U.S. Department
of Energy National Advanced Drilling and Excavation
Technology Program. He is the editor and a
contributing author for The
Practical Handbook of Environmental Site Characterization
and Ground-Water Monitoring (First
and Second Editions), The
Essential Handbook of Ground-Water Sampling
and Technical Guidance
on Low-Flow Purging and Sampling and Minimum-Purge
Sampling. He is also an active member
of ASTM, AIPG, the Association of Ground Water
Scientists and Engineers, the American Institute
of Hydrology and the Association of Engineering
Geologists. He served for 12 years on the
Wright State University Geology Department's
Board of Counselors and served for 12 years
as Editor of Ground-Water Monitoring and
Remediation. He holds B.A. and M.S. degrees
in geology from Miami University and Bowling
Green State University respectively. Prior
to co-founding the Nielsen Environmental Field
School and Nielsen Ground-Water Science, Inc.,
he managed regional offices for two geoscientific
and engineering consulting firms, served as
director of research and education for the
National Ground Water Association and worked
for state environmental agencies in Massachusetts,
West Virginia and Ohio.
David has also
written guidance documents on direct-push
technology and ground-water sampling for the
U.S. EPA Superfund program, and reviewed technical
reports for the U.S. EPA's Environmental Technology
Verification (ETV) program. He is the recipient
of the Outstanding Service Award of the Association
of Ground Water Scientists and Engineers,
The Outstanding Achievement Award of ASTM,
and a 4-time recipient of ASTM's Special Service
Award.
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Gillian Nielsen
is Vice President of The Nielsen Environmental
Field School. She has 29 years of international
experience as an environmental and ground-water
consultant and trainer. During her professional
career she has developed, managed and implemented
ground-water monitoring and sampling programs,
soil gas monitoring investigations, multimedia
environmental sampling programs, RCRA compliance
audits, environmental site assessments and
remediation programs at hazardous and non-hazardous
waste sites in the U.S. and Canada. She has
also played a key role in the development
and management of corporate standard operating
procedures as well as health and safety procedures
and policies.
Gillian specializes in developing and instructing
a wide variety of field practice-oriented
training programs for private industry, consulting
firms, state and Federal regulatory agencies,
universities, professional and trade associations.
She has lectured extensively and taught hundreds
of field courses on the topics of ground-water
monitoring and sampling, environmental sampling
and field sample analysis, design and implementation
of soil gas investigations and RCRA compliance
throughout the U.S. as well as Canada, England,
Guatemala and Australia. Gillian also conducts
8-hour health and safety refresher training
courses annually for clients across the U.S.
who are involved in environmental contamination
investigation and remediation projects. In
addition to training, she works closely with
industry and consulting firms as a consultant
conducting audits of field investigation activities,
negotiating with PRPs and regulatory agencies,
developing corporate standard operating procedures
and health and safety plans and providing
technical reviews of site investigation reports.
She also works closely with environmental
instrumentation companies in the evaluation
of new equipment and in development of new
instrumentation.
Gillian is a 16-year member of the Editorial
Board of Ground-Water Monitoring and Remediation
and an active member of the ASTM Subcommittee
D-18.21 task group on ground-water sampling.
She is the recipient of Ground Water Publishing
Company's Outstanding Service Award for her
work on the editorial board of the journal
Ground-Water Monitoring and Remediation
and has received several Standards Development
Awards from ASTM. She has authored a number
of scientific papers and written many ASTM
Standards dealing with ground-water sampling,
soil-gas monitoring, field analysis of environmental
samples, and field decontamination procedures,
and was a contributing author for first (1991)
and second (2006) editions of The Practical Handbook of Environmental
Site Characterization and Ground-Water Monitoring
as well as Technical
Guidance on Low-Flow Purging and Sampling
and Minimum- Purge Sampling (2002). She
is also a co-editor and contributing author
of the text The
Essential Handbook of Ground-Water Sampling,
published in January 2007. Gillian frequently
provides technical reviews of state and Federal
regulatory agency technical guidance documents.
Gillian holds B.Sc. degrees in geography (hydrology)
and biology (aquatic) from Trent University
in Peterborough, Ontario Canada.
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