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Personnel
ESN Rocky Mountain personnel are experienced in broad range of environmental site
assessment and remediation services, and have considerable additional experience in site
investigation and remediation. All field personnel have current OSHA training and medical
monitoring, including current respirator fit tests. Some have DoE Rad II Certification.
James Viellenave, President,
B.A. Geography, 1971, U.C. Santa Barbara; M.A. Geography, 1973, U.C. Riverside.
Mr. Viellenave has nearly 30 years operating and
management experience in site investigation and remediation, including hundreds of projects
with ESN since forming the company in 1995. ESN’s work has included soil, ground water, and
vapor sampling, and both on-site and fixed lab analysis of samples. ESN has developed
sophisticated new methods for on-site and other analysis of vapors for risk assessments. In
addition, ESN has installed and monitored dozens of in situ remediation programs. ESN has
developed and implemented novel delivery systems for injection of remediation chemicals,
including ORC, HRC, per-oxygen compounds, and special slurries for reactive barrier walls.
Prior to 1995, Mr. Viellenave was Vice President of NERI, supplier of Petrex soil gas and other
environmental site assessment and remediation services, for twelve years. Before that, he was
the Manager of Environmental Services for over ten years with Earth Sciences, Inc., Golden CO,
implementing all environmental activities, including mine, mill, and chemical plant permitting,
design and implementation of environmental monitoring systems, and investigation and
remediation of environmental contamination events. He has taught numerous environmental
geochemical seminars to industry and government over the past seven years, including the US
Army Corps of Engineers, EPA, State Environmental agencies, and consultants, and teaches an
annual short course in Environmental Geochemistry at the U.S. Air Force Academy.
John Fontana, Vice President, BS Geology, Oceanography & Physics, Humboldt State
University, 1981. Mr. Fontana has 20 years experience in management of geologic and
laboratory services. In the fields of soil, soil gas, groundwater, sampling, analysis, and
remediation technologies, he has been responsible for developing and implementing new
methods and procedures. He has authored and presented numerous papers on sampling methods,
soil gas geochemistry, and analysis and interpretation of hydrocarbons in soils. He has designed
and developed new tools for subsurface sampling and remediation purposes including injection
methods, sparging, soil gas and groundwater sampling monitoring devices. He currently
oversees all field and laboratory projects for ESN as well as R & D projects. From 1987-1997,
he was President of Direct Geochemical Inc., which provided field-sampling services, mobile
laboratory and fixed laboratory services. Prior to that, he was involved in field sampling and
analysis of petroleum hydrocarbons in soils, ground water, and vapors for Detex and GX
consultants. He began his geologic career as a wellsite geologist for Analex, conducting
geological, geochemical, and lithologic logging of oil well drilling operations. He is also
experienced in geophysical log interpretation, and statistical analysis of environmental and
geochemical data including fingerprinting techniques. Mr. Fontana has also served been
deposed as an expert witness in cases involving soil gas.
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