Leadership Team

Daniel D. Overton, P.E., D.GE

Daniel D. Overton, P.E., D.GE

President, Principal Geotechnical Engineer

Credentials

Daniel D. Overton, P.E., D.GE – President

E-Mail:  (vCard)

Years of Experience: 30+

Education:

  • M.S., Civil Engineering (Geotechnical Engineering), University of California, Los Angeles (1988)
  • B.S., Civil Engineering, Colorado State University, Fort Collins, Colorado (1985)

Specialties:

  • Licensed engineer in 17 states
  • Mine site reclamation design
  • Mine facilities design including tailings impoundments, heap leach pads, process solution ponds, and waste rock disposal sites
  • Water impoundment and dam design
  • Geo-Civil and public works design
  • Foundation remediation design
  • Forensic studies
  • Expansive soils design
  • Geotechnical instrumentation

Bio

Dan Overton
Daniel D. Overton, P.E., D.GE – President

Mr. Overton is a Principal Geotechnical Engineer for Engineering Analytics, Inc.  He has over 34 years of geotechnical and reclamation engineering experience on a diversity of projects.  He has been the project manager for the design, operation, and closure of several uranium mill tailings storage facilities.  He has designed geotechnical monitoring systems for tailings impoundments, earth fill dams, open pits, and waste rock piles and served as the project engineer or project manager for the design of heap leach pads, process solution ponds, and waste rock disposal sites.  Technical specialties include cover design, tailings consolidation, seepage and groundwater analyses, stability analyses, infiltration modeling, developing grading plans, and determining quantities and costs. He is a Diplomate of Geotechnical Engineering, Fellow of ASCE and is a Facility Affiliate at Colorado State University, having served on various thesis and dissertation committees, and is the Past Committee Chair of the Tailings and Mine Waste Conference.  Mr. Overton has served as the Project Engineer or Project Manager for expansive soils design, forensic studies, commercial and mid-rise buildings, public works projects, residential and master planned communities, and geotechnical instrumentation.  Mr Overton has written approximately 50 technical papers addressing multiple aspects of geotechnical engineering and is a co-author of the text book titled “Foundation Engineering for Expansive Soils”.

Mr. Overton enjoys spending his free time with his wife, children and grand-children, and helping his wife with her farm.  Dan is also enthusiastic about outdoor activities, he enjoys fishing, hiking, hunting and skiing.  For years, he has been involved in the Boy Scouts of America, and continues to be active and involved in his church.

 

Erik J. Nelson, P.E.

Erik J. Nelson, P.E.

Vice President, Oil & Gas Lead, Principal Civil Engineer

Credentials

Erik J. Nelson, P.E.
Erik J. Nelson, P.E.

E-Mail:  (vCard)

Years of Experience: 25+

Education:

  • B.S., Civil Engineering, Colorado State University, Fort Collins, Colorado (1984)

Specialties:

  • Geotechnical engineering
  • Water retention dams
  • Tailing dams for coal, uranium, and copper mine tailings
  • Pavement analysis and design
  • Landfill stabilization and restoration
  • Deep foundations for multi-story buildings and grain elevators
  • Large scale grading projects for both commercial and residential projects
  • Site assessment
  • Design, construction, and operation of remediation systems for the treatment of soil and groundwater contamination
  • Permit applications including construction permits, aquifer protection permits, solid waste landfill permits, and environmental resource protection permits
  • Disposal and handling of low level radioactive wastes
  • Backflow prevention and potable water studies for mines and industrial facilities
  • Remedial investigations and designs
  • Feasibility studies
  • Remedial actions for EPA Superfund sites
  • Construction management services for the construction of large scale remediation systems

 

Bio

Erik J. Nelson, P.E.
Erik J. Nelson, P.E.

Mr. Nelson has over 34 years of experience in geotechnical and civil engineering, site assessment, remediation system design, construction, and operation, and process design engineering. He has provided construction oversight for large-scale grading projects at industrial, commercial, and residential sites. He has designed pavements at single family and multifamily developments, commercial sites, industrial facilities and municipal roadways. He has developed grading plans for the repair of drainage at single and multifamily residential properties, and for new construction of municipal buildings. He has designed and tested deep foundations for single and multi-family residential structures, multi-story buildings and grain elevators. He has also designed water retention dams and tailings dams for coal, uranium, and copper mine tailings. Projects have involved the excavation and placement of up to 44 million cubic yards of soil and the stabilization of large landslide complexes.

Mr. Nelson has prepared storm water management plans and designed storm water handling facilities. He has performed storm water runoff calculations for mining properties, nurseries, landfills, and other industrial properties. He has prepared remedial investigations and feasibility studies, and been responsible for the design, construction and operation of remediation systems for the treatment of soil and groundwater contamination. Additionally, he has provided construction management services for the construction of large-scale remediation systems.

Mr. Nelson is an avid martial arts student and instructor of Bujinkan Ninjutsu and Iaido. He is also an avid outdoorsman and enjoys big game hunting, skiing, kayaking, rock climbing, climbing 14ers, fishing and working on his Jeep. He also has a passion for growing and cooking with Green Chilis.

 

Jason Andrews, P.E.

Jason Andrews, P.E.

Vice President, Mining Lead, Project Geotechnical Engineer

Credentials

Jason Andrews, P.E.
Jason Andrews, P.E.

E-Mail:  (vCard)

Years of Experience: 15

Education:

  • M.S., Geotechnical Engineering, Colorado State University, Fort Collins, Colorado (2004)
  • B.S., Civil Engineering, Colorado State University, Fort Collins, Colorado (2003)

Specialties:

  • Licensed in 6 states
  • Geotechnical engineering pertaining to mine site remediation and operations
  • Slope stabilization
  • MSE, anchor and soil nail retaining wall design
  • Forensic investigations and expert testimony
  • Impoundment and embankment design
  • Quality assurance and quality control oversight relating to geotechnical and environmental projects
  • Expansive and collapsible soils investigation

Bio

Jason Andrews, P.E.
Jason Andrews, P.E.

Mr. Andrews has experience in geotechnical engineering pertaining to mine site remediation, construction defect litigation, retaining wall design and repair, field investigations, and quality assurance and quality control oversight relating to geotechnical and environmental projects.  He has served as a senior engineer and project manager for many mining design and reclamation projects, construction defect litigation projects, and civil engineering projects.  His  areas of expertise include site investigation and characterization, feasibility investigations, engineering investigations, development of remediation alternatives, implementation of remedial design, and construction oversight.  Mr. Andrews has performed geotechnical engineering and environmental investigations for forensic, mining, and public works projects throughout the United States, South America, and Canada.

Mr. Andrews enjoys spending time with his wife and children. He has a knack for home improvement projects and finds himself dividing his spare time between said improvement projects and participating in his children’s events.  He is active in his church.  He also enjoys running, cycling and camping.

Clint Brown, P.E.

Clint Brown, P.E.

Vice President, Water Resources Lead, Senior Dam Engineer

Credentials

Clint Brown, P.E.
Clint Brown, P.E.

E-Mail:  (vCard)

Years of Experience: 18

Education:

  • M.S., Civil Engineering, Colorado State University (2004)
  • B.S., Civil Engineering, Colorado State University (2001)

Specialties:

  • Dam Design and Rehabilitation
  • Geotechnical Investigations
  • Dam Inspections
  • Emergency Spillway Design
  • Reservoir Inflow Design Flood Analysis
  • Dam Outlet Design
  • Construction Specifications Preparation
  • Construction Oversight

Bio

Clint Brown, P.E.
Clint Brown, P.E.

Mr. Brown has 18 years of experience in the design, project management and construction oversight involving the successful construction and rehabilitation of 25+ jurisdictional dams in Colorado, Wyoming and New Mexico. Mr. Brown’s responsibilities for these projects includes: aiding the client in the procurement of funds, lead design engineer, engineering analysis (including seepage, hydraulic, hydrologic, structural, pipe design, and geotechnical analyses), construction permitting, development of construction drawings and specifications, and construction oversight. Mr. Brown also has experience in geotechnical analysis, storm water management, and water balance studies for mine sites in the Western United States, Australia, Indonesia, and Kazakhstan.

Mr. Brown enjoys skiing with his wife and children. He is an active member in his church, coaches boys soccer in his spare time, and somehow still manages to carve out time to train and compete in marathons across the U.S.

Denise Garcia, P.G.

Denise Garcia, P.G.

Geo-Civil Lead, Project Engineering Geologist

Credentials

Denise Garcia, P.G.

E-Mail:  (vCard)

Years of Experience: 10

Education:

  • M.S., Earth and Atmospheric Science, Purdue University, West Lafayette, Indiana (2008)
  • B.S., Geology, Winona State University, Winona, Minnesota (2006)

Specialties:

  • Engineering geology
  • Slope stability and landslides
  • Foundation remediation
  • Forensic studies
  • Expansive and collapsible soils
  • Retaining walls
  • Field investigation including drilling borings, instrumentation, and geologic mapping
  • Seismic hazard analyses
  • Environmental problem solving in relation to applied environmental geology

Bio

Denise Garcia, P.G.
Denise Garcia, P.G.

Ms. Garcia is a registered professional geologist with over 10 years of consulting experience for slope stability, mining and environmental, foundation and site remediation, and forensic investigation projects. She has served as an engineering geologist or project manager for projects involving mine site investigation and remediation, slope stability, foundation remediation, construction defect litigation, and retaining wall design and repair. She has performed numerous site investigation and characterization projects including drilling borings, installation/monitoring of geotechnical and water monitoring instrumentation, geologic mapping, level surveying of slopes/retaining structures and foundation movement, retaining wall investigation, and well pumping and sampling. Her experience also includes technical analyses related to slope stability and landslides, expansive soils and bedrock, collapsing/consolidating soils, seismic hazard analyses, foundation remediation, and environmental due diligence for natural gas wells. She has worked on projects to develop remediation alternatives for mine site closure, landslide stabilization, and foundation remediation.

Ms. Garcia enjoys camping with her husband and two children, and going off-roading in their Jeep. She’s a Broncos’ fan, and we do mean FAN! If you’re wondering what to eat, Denise is your gal, she’s very well versed in nutrition and enjoys all forms of adventures in food.

Jim Brockway, P.E.

Jim Brockway, P.E.

Industrial Lead, Senior Electrical Engineer

Credentials

Jim Brockway, P.E.
Jim Brockway, P.E.

E-Mail:  (vCard)

Years of Experience: 30+

Education:

  • B.S., Electrical Engineering, Colorado State University, Fort Collins, Colorado (1984)

Specialties:

  • Licensed Engineer in 9 states
  • Project Management
  • Water and Wastewater Treatment Power and Control
  • Industrial, Oil and Gas Power and Control Design
  • Grounding System Design
  • Motor Power and Control System Design
  • Electrical Inspections
  • Electrical System Modeling
  • Solar Power
  • Electrical Utility Projects
  • Substation Design

Bio

Jim Brockway, P.E.
Jim Brockway, P.E.

Mr. Brockway has provided planning, design, project management, engineering and field services in electrical power and controls engineering on industrial, utility, commercial, and manufacturing projects. He has served as a senior engineer and project manager for multiple water and wastewater treatment, petroleum refining, food and beverage, solar power, and electrical utility projects. His areas of experience include site and equipment power, grounding, motor power and control, and instrumentation systems. Engineering designs include motor controls, control loop design, , switchgear, power factor correction, distribution staking sheets, equipment specifications, unit substations, control panel design, and various arc flash and computer applications and studies. He has worked on systems ranging from 230 kV transmission lines to 24 vdc control networks. Mr. Brockway has performed work on projects in Colorado, Wyoming Nebraska, New Mexico, Oklahoma, Washington State, Kansas, Florida, and Arizona.

Mr. Brockway enjoys cycling, skiing and camping with his wife and sons, and traveling with his wife. He’s an enthusiastic dad and can often be found behind the lens of his trusted Canon DSLR as the semi-official photographer of many a football game, wrestling match, and track meet.

Karen Stearns, P.E.

Karen Stearns, P.E.

Raton Office Manager, Senior Civil/Water Resources Engineer

Credentials

Karen Stearns, P.E.
Karen Stearns, P.E.

E-Mail:   (vCard)

Years of Experience: 24

Education:

  • B.S., Civil Engineering, New Mexico State University, Las Cruces, New Mexico (1992)

Specialties:

  • Project, program and construction management
  • Storm water quality program management and EPA/CWA NPDES and 404 Permitting
  • Master drainage plans and capital improvement plans for municipalities
  • Municipal and transportation drainage analysis/design and construction support: Hydrology, riverine modeling, culverts, storm drain systems, bridges, storm water storage facilities, levees, regional water quality structures, grade control or drop structures, sediment traps, erosion protection, and bank and channel stabilization.
  • Emergency response recovery for drainage infrastructure
  • FEMA Flood Insurance Rate Maps and National Flood Insurance Program
  • Federal, commercial, and industrial facility and community development (e.g., roads, water, sewer, grading, drainage, parking) and program management

Bio

Karen Stearns, P.E.
Karen Stearns, P.E.

 

As a licensed Civil Engineer, Ms. Stearns is primarily experienced in Water Resources and General Civil, with various project roles, such as Project Engineer, Project Manager, Program Manager and Principal.  Over her 26 years of experience, Ms. Stearns has provided planning, design and construction phase engineering services to a wide variety of public and private clients.  Her latest projects include improvements to the Raton water treatment and Cimarron River water diversion plants; various municipal road, storm drain, and site civil projects; Lake Dorothy Dam and Miami Lake Dam rehabilitation projects; sanitary sewer lift station replacement; monitoring wells and geotechnical investigations; grout injection for foundation stabilization for the historic St. Vrain Mill; municipal water main and commercial water tank replacements; and Cimarron River bank stabilization.

Her hydrology experience includes rural and urban conditions, gaged streams, Unit Hydrograph Method, USGS Regression Equations, Simplified Peak Flow Method, Rational Method, and Arid-lands Hydrologic Model (AHYMO).  Ms. Stearns is experienced in riverine modeling and hydraulics of culverts, storm drain systems, bridges, storm water storage and water quality facilities, levees, grade control or drop structures, sediment traps, and erosion protection.  Ms. Stearns has also submitted applications for 404 Permits and National Pollution Discharge Elimination System (NPDES) Permits.  Ms. Stearns has experience evaluating and modifying a Storm Water Management Program in order to comply with the US EPA NPDES Municipal Separate Storm Sewer System (MS4) Permit.

Ms. Stearns enjoys travelling, gardening and spending time with her husband, kids, grandchild and dogs.  She also assists her husband with their brewery, Colfax Ale Cellar, and can be found working the counter and enjoying the local crowd most weekends

Mark Abshire, P.E.

Mark Abshire, P.E.

Senior Geotechnical Engineer

Credentials

Mark Abshire, P.E.
Mark Abshire, P.E.

E-Mail:  (vCard)

Years of Experience: 25+

Education:

  • M.S., Civil Engineering, Colorado State University, 2002
  • B.S., Engineering Science (Space Engineering), Colorado State University, 1992

Specialties:

  • Licensed engineer in 6 states (AK, AZ, CO, NM, UT, WA)
  • Mine site reclamation design
  • Mine facilities design including tailings impoundments, heap leach pads, process solution ponds, and waste rock disposal sites
  • Water impoundment and dam design
  • Geo-Civil and public works design
  • Foundation Design

Bio

Mark Abshire, P.E.
Mark Abshire, P.E.

Mr. Abshire is a senior project manager with 25 years of experience in geotechnical and geoenvironmental engineering for public and private sector clients on domestic and international projects. Project experience includes mine waste management, reclamation, public works and civil infrastructure, and community development. Specific project management and design experience includes dam safety, tailings storage facilities, mine reclamation and closure, environmental compliance, water treatment plants, power generation facilities, levees, municipal and public buildings and roadways. He also stays active at Colorado State University teaching class and volunteering with NASA student programs.

Mr. Abshire fits the stereotypical Coloradoan to the tee. When he’s not working, he’s outside enjoying the great outdoors with his wife and two children; traveling, fishing, skiing, hiking, camping, scouting, baseball, and soccer. He also enjoys helping his wife on her animal farm and is an avid home brewer.

Melissa Chalona, P.E., CHMM

Melissa Chalona, P.E., CHMM

Project Environmental Engineer

Credentials

Melissa Chalona, P.E., CHMM
Melissa Chalona, P.E., CHMM

E-Mail:  (vCard)

Years of Experience: 20+

Education:

  • B.S., Environmental Engineering, University of Florida, Gainesville, Florida (1995)

Specialties:

  • Mine site reclamation permitting and compliance
  • Stormwater drainage design, Stormwater Management Plan development and inspection
  • Clean Water Act (CWA) section 404 Permits and National Pollution Discharge Elimination System (NPDES) Permits
  • Phase I and Phase II Environmental Site Assessments (ESAs)
  • Spill Prevention Control and Countermeasure Plans (SPCC)
  • Asbestos and demolition projects
  • Environmental investigations
  • Environmental monitoring and data analysis

Bio

Melissa Chalona, P.E., CHMM
Melissa Chalona, P.E., CHMM

Ms. Chalona has 21 years of experience in environmental and civil engineering and is a licensed professional engineer in Colorado, Wyoming, and Texas. Ms. Chalona has served as an environmental consultant for public and private ventures, including mining reclamation activities, Phase I and Phase II Environmental Site Assessments, property procurements, construction, permitting, operations, and site-remediation projects.

Ms. Chalona has worked extensively with clients to obtain state and local environmental permits and approval for regulated activities. She has worked on remediation of contaminated buildings, developed plans for Storm Water Management (SWMP), Spill Prevention Control and Countermeasure (SPCC), Oil Spill Contingency. She is involved in surface and groundwater monitoring and reporting, air quality monitoring, environmental compliance audits, hazardous waste storage and disposal, demolition recycling, 404 permitting, and NPDES permitting. She has managed asbestos and lead projects, including inspections, planning, design, and abatement oversight. She has performed mining reclamation and civil engineering projects in Washington, Utah, Wyoming, Colorado, Florida, Texas, and Canada. She is also the current secretary of the Colorado Section of the SME.

Ms. Chalona enjoys spending time with her husband and daughters. When she has free time she enjoys hiking, camping, lake kayaking, skiing, gardening and traveling. She loves Fort Collins trail system and rides her red cruiser bike to work as much as possible.

Duane Smith, P.E.

Duane Smith, P.E.

Principal Civil/Geotechnical Engineer

Credentials

Duane Smith, P.E.
Duane Smith, P.E.

E-Mail:   (vCard)

Years of Experience: 40+

Education:

  • M.S., Civil Engineering, University of Arkansas (1975)
  • B.S., Civil Engineering, University of Arkansas (1974)

Specialties:

  • Water impoundment and dam design
  • Irrigation diversion and control structures
  • Geo-Civil and public works design
  • Municipal and transportation design and construction support
  • Foundation design
  • Structural design of water and wastewater treatment plants
  • Structural design of electrical transmission and distribution structures

Bio

Duane Smith, P.E.
Duane Smith, P.E.

Mr. Smith has 44 years of experience in the structural and geotechnical design, project management and construction oversight for power generation projects, electrical transmission and distribution projects, dam rehabilitation, water and waste water treatment plant structures, and raw water distribution for agricultural irrigation.

Mr. Smith has been the project engineer/project manager on the rehabilitation of more than 45 jurisdictional dam projects in the states of Colorado, Wyoming, and New Mexico. Mr. Smith’s responsibilities for these projects included: project manager, aiding the client in the procurement of financing, project design engineer (responsible for seepage analyses, structural design, pipe design, gates and controls, outlets structures, spillway structures, and geotechnical investigations and analyses), construction permitting, development of construction drawings and specifications, and construction oversight. Mr. Smith has extensive experience with the Colorado Water Conservation Board and the securing of funds for water projects. Mr. Smith has successfully applied and obtained funding on more than 30 projects from the Colorado Water Conservation Board.

Mr. Smith also has extensive experience on the design of structures and foundations for electrical substations and electrical transmission and distribution systems. His experience includes more than 50 substations and transmission lines in the states of Colorado, Wyoming, Nebraska, and New Mexico.

Mr. Smith enjoys spending time with his wife, children, and grand-son. He also enjoys mountain biking, hunting, fishing and camping hiking and is active in his church.

Tim Runnells

Tim Runnells

Principal Water Treatment Designer

Credentials

Tim Runnells
Tim Runnells

E-Mail:  (vCard)

Years of Experience: 25+

Education:

  • B.S., Hydrogeology, Utah State University, Logan, Utah (1992)

Specialties:

  • Water treatment
  • Aquifer testing
  • Analysis
  • Surface and groundwater sampling and characterization
  • Baseline chemistry investigations

Bio

Tim Runnels
Tim Runnells

Mr. Runnells has approximately 25 years of consulting experience where he has managed multi-disciplinary projects including water treatment, aquifer testing and analysis, surface and groundwater sampling and characterization, baseline chemistry investigations, ecological, and human health risk assessments. His experience includes baseline and background hydrogeologic, geochemical, and/or geotechnical characterization of impoundments, waste rock piles, mine sites, industrial sites, and municipalities at locations throughout the United States.

Mr. Runnells has written or revised Operations and Maintenance plans for water treatment facilities and Standard Operating Procedures related to drilling, monitoring well completion, and groundwater and surface water sampling at several sites including two CERCLA sites.

Mr. Runnells enjoys hooking up the 5th wheel and heading out on the open road. He and his wife enjoy setting their course by way of our U.S. Highways often heading out to visit their son and/or daughter. He is also an avid duck hunter, emphasized by his ring tone that can be heard quacking from his pocket as he passes by in the office.