Registered Site Manager, North Carolina Inactive
Hazardous Sites Branch
BS Geology - North Carolina State University,
AAS Business Data Processing – Wake Technical
College
Licensed Professional Geologist in North
Carolina, Georgia, and Tennessee with over 24
years of experience in UST, chlorinated
solvents, agrichemicals, and inorganic waste
site assessments, closures, in-situ chemical
oxidation techniques, brownfields projects,
monitored natural attenuation, soil and ground
water remediation, natural
attenuation/biodegradation assessment and design
for projects in North Carolina, South Carolina,
Virginia, Texas, Pennsylvania, Michigan,
Indiana, Massachusetts, West Virginia, Maryland,
Delaware, Georgia, Alabama, Tennessee, Kentucky,
Florida, Utah, Nevada, the United Kingdom and
South Africa.
Thomas S. Dunham, P.G., Principal
Senior Geologist / Senior Project Manager
BS Geology - State University of New York, MS Geology -
University of Rhode Island.
Licensed Professional Geologist in North Carolina, Delaware,
Kentucky and Tennessee with more than 17 years
of geological and environmental experience in
UST, chlorinated solvents, agrichemicals, and
inorganic waste site assessments, closures, and
soil and ground water remediation, Phase I and
II environmental site assessments in North
Carolina, South Carolina, Virginia, Tennessee,
Maryland, Delaware, West Virginia, Kentucky,
Pennsylvania, Texas, Florida, Indiana, Michigan,
and India. He has three geological
publications.
Bryson D. Trexler, Jr., Ph.D., P.G., R.S.M.
Senior Hydrogeologist/Senior Project Manager
Registered Site Manager, North Carolina Inactive
Hazardous Sites Branch
BS Geological Engineering and MS Geology – NCSU,
Ph.D Geology – University of Idaho.
Licensed Professional Geologist in Idaho, North
Carolina, and South Carolina with over 35 years
of experience in UST, chlorinated solvents, and
inorganic waste site assessments, closures, and
soil and ground water remediation, natural
attenuation/biodegradation assessment and
design, ground water resource evaluation,
development and management, ground water quality
studies, aquifer testing and evaluation, seepage
analysis, design and installation of ground
water extraction systems, expert witness
testimony and technical support for trials in
Arizona, Arkansas, California, Colorado,
Delaware, Florida, Georgia, Idaho, Indiana,
Maryland, Mississippi, Missouri, Nevada, New
Jersey, New Mexico, North Carolina, Ohio,
Pennsylvania, South Carolina, Utah, Virginia,
Tennessee, Texas, Washington, Wisconsin, and
Canada and Mexico. Authored 31 papers on
hydrogeology and geotechnical engineering.
Daphne M. Jones R.S.M.
Senior Project Manager/ Geologist
BA Geology – University of Tennessee, Knoxville; MS Geology –
Louisiana State University
Regulatory experience includes the NC Department
of Environment and Natural Resources (DENR) as
project manager for the Hazardous Waste Section
(12 years), Brownfields Program (4 years), and
working with a group to set up DENR
Environmental Permit Information Center (1
year). Other work experience includes
oil/gas and minerals exploration and
environmental lab (11 years). Since
joining Duncklee & Dunham in June 2006, she has
performed internal site audits nationwide and in
Canada in support of a client’s ISO 14001 EMS,
has assisted in the performance of brownfields
inventories and multi-parcel Phase I assessments
in several North Carolina municipalities, and is
assisting prospective developers (both private
and municipal) in obtaining brownfields
agreements and continuing environmental
compliance services.
James A. Bennett, P.G., R.S.M.
Senior
Project Manager/
Senior Hydrogeologist
Registered Site Manager, North Carolina Inactive
Hazardous Sites Branch
BS Geology – North Carolina State University
Over 23 years
experience in environmental/engineering
consulting assessment and remediation, including
numerous industrial sites in the Carolinas.
Consulting experience includes complex
innovative site investigations, regulatory
negotiations, risk evaluations, ground water
resource evaluations, ground water modeling,
surface to ground water interactions, and
remediation programs for a variety of organics
and inorganic projects in complex geologic
settings involving multi-layered sediment and
rock aquifer systems. A former NCDENR regulator
and author of the NCDENR Groundwater Section
QA/QC and Standard Operating Procedures Manual
for Sample Collection (NCDENR, 1989), and
several other documents. He is a licensed
professional geologist in North Carolina and
several other states.
Jayson A. Kilcoyne
Project Environmental
Scientist II
BA Environmental Science –
Plattsburgh State University of New York and AS
Biology – Herkimer County Community College
Environmental experience in the assessment of
UST/AST petroleum releases, agrichemicals,
chlorinated solvents, and inorganic waste.
Knowledgeable of NCDENR regulated sites
pertaining to the assessment and remediation of
petroleum contamination in ground water and
soil. Over seven years of consulting experience
involving soil and ground water sampling
procedures and methods, soil excavations, UST
closures, soil
and ground water remediation systems, well
installations including specialty drilling, and
various forms of aquifer testing. A former
industrial air pollution technician with field
experience such as wet-method testing and CEM
monitoring. He is a licensed driller and a
Grade I Physical/Chemical Water Pollution
Control Systems Operator in the state of North
Carolina.
Emily H. Sauls
Office
Manager
BS Agricultural Business Management - North
Carolina State University
Ms. Sauls manages accounts payable, accounts
receivable, contract
preparation and management, business insurance,
contracts and requirements, electronic document
management, and overall file management.
Clark Wipfield
Staff Geologist
BS Geology and BS Marine Science- North
Carolina State University
Working experience includes site assessments in
monitored natural attenuation, in-situ chemical
oxidation, ground water modeling, chlorinated
solvents, and soil and ground water remediation
projects in North Carolina, Virginia, Kentucky,
Florida, and Georgia. NCDENR regulatory
knowledge includes storm water, UST/AST, solid
waste, and hazardous waste sections.
Latest News at Duncklee & Dunham
January 2010
Dave Duncklee
remains active in the Association of
Environmental and Engineering Geologists (AEG),
currently serving as treasurer on the Carolinas
Section board, as short course committee chair
on the AEG Charleston 2010 national meeting, and
as co-chair of the national AEG continuing
education committee. Dave has also recently been
approved by the Interstate Training and
Regulatory Council (ITRC) to participate in the
newly formed Environmental Molecular Diagnostics
team.
November 2009
Duncklee &
Dunham's Jay Bennett and Bryson Trexler are
using innovative techniques to develop site
specific soil clean-up levels and develop a
ground water variance for site metals
restoration. The site is under the REC program
and currently being managed on a fast track
basis to accommodate expedited clean-up of soil
and groundwater once plant modifications are
made.
Duncklee &
Dunham is preparing to implement full scale
injection plan involving sodium persulfate into
shallow groundwater under and adjacent to a
former manufacturing building. A corrective
action plan and an injection permit were
submitted and approved under the Ga DEP HIS
program.
November 2009
Congratulations to Jayson Kilcoyne on his
promotion to Project Environmental Scientist II.
His efforts are currently concentrating on the
assessment and remediation of agrichemical and
petroleum UST projects.
October 2009
In partnership
with a local law firm, Duncklee & Dunham has
recently provided pro bono professional
assistance to Hope Elementary Charter School in
Raleigh, North Carolina. Work was conducted to
assess and dispose approximately three tons of
soil, potentially contaminated with lead-based
paint, from the school property. The closure
report was submitted to the school in October
2009.
April 2009
Duncklee & Dunham is performing our third GIS
brownfield inventory project for a local NC
municipality. This project is being performed
for several hundred parcels and will be
completed in approximately five weeks time start
to finish.
March 2009
Duncklee & Dunham has
completed a 1,700 parcel GIS brownfields
inventory for a local NC municipality. Muti-parcel
Phase I ESAs are currently being performed under
this US EPA brownfields grant funded project. To
our knowledge, this is the second GIS
brownfields inventory completed in NC, both of
which have been performed by the firm. Dr.
Trexler is currently working with US EPA Region
4 to finalize a QAPP so that phase II assessment
tasks can be implemented using the brownfield
grant funds.
February 2009
In a joint effort with
Rodak Engineering, Duncklee & Dunham is in the
process of performing over one hundred SPCC
plans across the US. Duncklee & Dunham has
prepared over 900 spill plans across the US over
the past ten years.
December 2008
Cary Office -
Office renovations are complete and the Duncklee
& Dunham office is back to a full house. Feel
free to stop by and take a look. See the
Contact page
for a before and after photo!
Quick Contact
Duncklee and Dunham
511 Keisler Drive - Suite 102
Cary, NC 27518
