All Staff

Abshire, Mark, M.S., P.E, Senior Engineer

Years of Experience: 30+

Education & Licensure:

  • M.S., Civil Engineering, Colorado State University (2002)
  • B.S., Engineering Science (Space Engineering), Colorado State University (1992)
  • Licensed engineer in 6 states (AK, AZ, CO, NM, UT, WA)

Specialties:

  • Mine site reclamation and closure
  • Mine facilities design including tailings impoundments, process solution ponds, and waste rock disposal
  • Dam design and dam safety
  • Geo-Civil engineering for private and public works development
  • Foundation design
Andrews, Jason, M.Eng., P.E., Senior Vice President, Senior Geotechnical Engineer

Years of Experience: 19

Education & Licensure:

  • M.Eng., Geotechnical Engineering, Colorado State University, Fort Collins, Colorado (2004)
  • B.S., Civil Engineering, Colorado State University, Fort Collins, Colorado (2003)
  • Licensed in 9 states (CO, KS, ID, NM, NV, NY, OH, TX, WY) 

Specialties:

  • 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 investigations
Arrazola, Miriam, Project Assistant

Years of Experience: 10+

Education:

  • B.S., Business Administration, California State University (2014)

Specialties:

  • Creating engineering reports
  • Project support
  • Office administration
  • Document management
Bartelt, Garrett, Staff ii Civil Engineer

Years of Experience: 3

Education:

  • M.S., Civil Engineering - Environmental, University of Minnesota, Minneapolis, MN (2021)
  • B.S., Chemistry, University of Wisconsin, Stevens Point, WI (2018)

Specialties:

  • Water/Wastewater Treatment Design
  • Construction Engineering (Water/Wastewater Industry)
  • Water Chemistry and Chemical Feed
  • Environmental Permitting
  • Water Supply Studies
  • Environmental Data Analysis
  • UAV Data Capture and Remote Sensing
Blythe, Jay, E.I.T, Staff I Civil Engineer

Years of Experience: 1+

Education:

  • B.S., Civil Engineering, University of Wyoming, Laramie, WY (2023)

Specialties:

  • Construction Observation
  • Geotechnical Investigation
  • Geotechnical Lab and Field Testing
  • Geotechnical Monitoring
Brockway, Jim, P.E., Senior Electrical Engineer

Years of Experience: 30+

Education & Licensure:

  • B.S., Electrical Engineering, Colorado State University, Fort Collins, Colorado (1984)
  • Licensed engineer in 10 states (AZ, CA, CO, FL, KS, NE, NM, OK, WA, WY)

Specialties:

  • Project management
  • Water and wastewater treatment power and control design
  • 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
Brown, L. Clint, M.S., P.E., Vice President, Senior Dam and Reservoir Engineer

Years of Experience: 18

Education & Licensure:

  • M.S., Civil Engineering, Colorado State University (2004)
  • B.S., Civil Engineering, Colorado State University (2001)
  • Licensed in 3 states (CA, CO, NM)

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
CHAMPION, PETER, P.E., Project WATER RESOURCES Engineer

Years of Experience: 10+

Education & Licensure:

  • B.S., Civil Engineering, Colorado State University, Fort Collins, Colorado (2011)
  • A.A., Computer Aided Design, Mesa State College, Grand Junction, Colorado (2004)
  • Licensed in 2 states (CO, NM)

Specialties:

  • Water treatment plant infrastructure development
  • Design drawing development
  • Project management
  • Construction management
  • Field engineering
  • AutoCAD
Chalona, Melissa, P.E., CHMM, Project Environmental Engineer

Years of Experience: 27+

Education & Licensure:

  • B.S., Environmental Engineering, University of Florida, Gainesville, Florida (1995)
  • Licensed in 3 states (CO, TX, WY)

Specialties:

  • Mine Site Reclamation
  • Permitting and Compliance
  • Fuel Terminal Expansion Permitting
  • 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 Compliance
  • SPCC and SWPPP Plans
Chao, Geoff, Ph.D, P.E., Senior Geotechnical Engineer

Years of Experience: 20+

Education:

  • Ph.D., Geotechnical and Geoenvironmental Engineering,
    Colorado State University, Fort Collins, Colorado (2007)
  • M.S. Geotechnical and Geoenvironmental Engineering,
    Colorado State University, Fort Collins, Colorado (1995)
  • B.S., Department of Civil Engineering,
    National Chung-Hsing University, Taiwan (1990)

Specialties:

  • Expansive soils evaluation and design
  • Forensic studies and remediation design
  • Unsaturated flow computer modeling
  • Deep foundation design
  • Mine site remediation design
  • Mine facility design
  • Water impoundment and dam design
  • Construction management services for the construction of large scale remediation systems
  • Geotechnical instrumentation
Coons, Kevin, P.E., Senior Chemical Engineer

Years of Experience: 36+

Education:

  • B.S., Chemical and Petroleum Engineering, Colorado School of Mines, Golden, Colorado (1986)

Specialties:

  • Design, permitting, construction oversight soil and groundwater systems
  • Process, facilities and remediation programs
  • Regulatory interface, negotiations
  • Engineering evaluation cost analysis
  • Construction management, preparation of procurement and construction specifications
  • Environmental Monitoring & Compliance
  • Groundwater Remediation
  • Remedial/Mitigation Evaluations and Design
  • Permitting and Compliance
Davis, Tyler, P.E., Staff Civil Engineer

Years of Experience: 8

Education & Licensure:

  • B.S., Civil Engineering, Colorado State University, Fort Collins, Colorado (2016)
  • Licensed in 2 states (CO, NM)

Specialties:

  • Construction site observation and oversight
  • Pavement analysis and design
  • Municipal roadway design and rehabilitation
  • Municipal utility design
  • Geotechnical investigations
  • Quality Assurance/Quality Control
  • Infrastructure & Development
  • Site Civil Design
Dellamano, Cameron, B.S., E.I.T., STAFF CIVIL ENGINEER

Years of Experience: 2+

Education:

  • B.S., Civil Engineering, Colorado State University, Fort Collins, CO (2023) 

Specialties:

  • Construction Oversight
  • Aiding in Design of Lift Stations
  • Construction Operations and Estimating 
  • Hec-Ras and GIS Modeling
  • Soil and Concrete Lab and Field Testing 
  • Geotechnical Drilling Testing 
  • Measuring Water Flow and Calculating Discharge
  • Performing Hydraulic Calculations in Excel
  • Creating and Reviewing Plan Sets in Bluebeam 
Dilliott, Nicolas, M.S., P.E., Senior Staff I Civil Engineer

Years of Experience: 3+

Education:

  • M.S., Civil and Environmental Engineering, Stanford University (2019)
  • B.S., Civil Engineering, University of California (2018)

Specialties:

  • Remedial design, permitting, and construction oversight of soil and groundwater systems
  • Site grading design
  • Wet and dry utility design
  • Storm water design, management, and implementation
  • Preparation of RFP’s, reports and engineering specifications
  • Hydrology
  • Engineering Design
  • Waster and Wastewater Treatment
Doyle, Georgia, M.S., Technical Editor

Years of Experience:   22

Education:

  • M.S., Hydrology/Hydrogeology, University of Nevada, Reno, NV (1993)
  • B.S., Hydrology and Water Resources, University of Arizona, Tucson, AZ (1988)

Specialties:

  • Technical editing: hydrology, geochemistry, biology, ecology
Dudginski, Richard, Project Environmental Scientist, Corporate health & safety officer

Years of Experience: 30+

Education:

  • B.S., Environmental Science, Pennsylvania State University, (1988)

Specialties:

  • Water treatment – bench testing, pilot study, design, construction, start up, and operation
  • Environmental site investigation and characterization
  • Regulatory compliance and monitoring
  • Data Analysis
  • Electrical power systems
  • Instrumentation and control systems
  • Asbestos abatement
  • Project management
  • Construction oversight
  • Health and safety - policy, regulatory compliance, audits and training
Durrant, Chris, P.E., Senior chemical Engineer

Years of Experience: 26

Education:

  • B.S., Chemical Engineering, University of Utah, Salt Lake City, Utah, (1998)
  • Licensed in 3 states (CO, NM, UT)

Specialties:

  • Process design
  • Treatment technologies
  • Produced water infrastructure and treatment
  • Equipment design
  • Construction oversight and project management
  • Bench and pilot water treatment testing
  • Solids dewatering
  • Water and Wastewater Treatment Design
  • Industrial Water Treatment
  • Water Storage Planning and Delivery
  • Water Balance
  • Pipeline Design
  • Automation
Garcia, Denise, M.S., P.G., Project Engineering Geologist

Years of Experience: 14

Education:

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

Specialties:

  • Project management
  • Engineering geology
  • Ground Stabilization
  • 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
  • Development & Forensics
Graham, Kellan, Senior Engineer Technician and Laboratory Manager

Years of Experience: 6

Education:

  • Art Institute of Pittsburgh, Pittsburgh, PA (2016)

Specialties:

  • ACI Concrete Field Technician Certified
  • ACI Compressive Strength Certified
  • WYDOT Soils and Aggregate Certified
  • WYDOT Portland Cement Concrete Certified
  • WYDOT Asphalt Concrete Certified
  • LabCat Level A, B, and C Certified
  • WAQTC/Soils Inspector Certified
Heckmann, Clorisa, Project Assistant

Years of Experience: 25+

Education:

  • B.S., Regis University, Health Care Administration, Denver, CO (2015)

Specialties:

  • Office administration duties
  • Creating engineering reports
  • Project work
  • Document management
Henry, Atley, Senior Staff Piping Designer

Years of Experience:   25+

Education:

  • B.S., Industrial Design, ITT Technical Institute, San Bernardino, CA (1998)
  • A.S., Computer Aided Drafting, ITT Technical Institute, San Diego, CA (1995)
  • Mentorship: Basic Electronics, Process Systems, Automated Systems, Manufacturing Process Systems and Cogeneration Technology

Specialties:

  • Design of soil and groundwater remediation facilities design including process, mechanical, electrical, civil, and instrumentation
  • Industrial design
  • Product development
  • Engineering, manufacturing, tooling and production process
  • 3D modeling
  • AutoCAD Civil 3D and Plant 3D
Hite, Emmett, Senior Engineering Technician and Construction Services Manager

Years of Experience: 11

Education:

  • University of Wyoming, Laramie, WY (2008)

Specialties:

  • American Concrete Institute Field Testing – Technician Grade 1
  • ICC Reinforced Concrete Special – Inspector Associate
  • WAQTC - Soils Inspector
  • Nuclear Gauge Operations
  • Radiation Safety Officer (RFO)
  • Construction Materials and Laboratory Testing
  • Environmental and Regulatory Compliance
  • Ground Stabilization
  • Water and Wastewater
Hoehn, Dylan, M.S., P.E., Senior Staff Civil and Hydrologic Engineer

Years of Experience: 7

Education:

  • M.S., Hydrology Science & Engineering, Colorado State University (2016)
  • B.S., Civil & Environmental Engineering, University of Tennessee, Knoxville (2014)
  • Licensed in 2 states (CO, NM)

Specialties:

  • Dam design and rehabilitation
  • Risk assessment of dams
  • Spillway design
  • Channel hydraulics
  • Watershed hydrology
  • Construction oversight
  • Hydraulics and Hydrology
  • Industrial Water Treatment and Management
  • Groundwater Stability
  • Permitting and Compliance
  • Engineering and Design
Kawano, Micah, Staff Civil Engineer

Years of Experience: 1

Education:

  • B.S., Civil Engineering, San Diego State University, San Diego, CA (2021)

Specialties:

  • Pipe design
  • Construction planning and scheduling
  • Hydrology/Stormwater design
  • Open channel flow design
Keller, Stephen, AUTOCAD I & engineering technician

Years of Experience: 5+

Education:

  • B.S., Construction Management, Colorado State University, Fort Collins, CO (2011)

Specialties:

  • ACI Concrete Field Testing Technician – Grade 1
  • Nuclear Gauge Operations
  • Environmental soil sampling
  • Environmental water sampling
  • AutoCAD
  • Civil 3D
  • Construction observation and oversight
  • Quality Assurance/Quality Control
  • Site Investigations
  • Construction Materials and Laboratory Testing
Lawrence, Errol, M.S., P.G., Senior Hydrogeologist and professional geologist

Years of Experience: 40

Education:

  • M.S., Geological Engineering, Colorado School of Mines, Golden, CO (1990)
  • B.S., Geology, Northern Arizona University, Flagstaff, AZ (1980)
  • Licensed in 2 states (TX, WY)

Specialties:

  • Groundwater flow and solute transport modeling
  • Aquifer test design, implementation, interpretation
  • Groundwater remediation system design & evaluation
  • Aquifer monitoring system design
  • Groundwater contamination investigation and analysis
  • Environmental litigation support
  • Uranium insight recovery and reclamation
Lester, Robert (Chris), Senior Staff Electrical Designer II

Years of Experience: 43

Education:

  • Dallas County Community College, Dallas, Texas (1980)

Specialties:

  • Electrical power and controls design
  • Industrial, commercial and manufacturing projects
  • Water and wastewater treatment
  • Petroleum refining, mining, food and beverage projects
Liles, Christopher, M.S., P.E., Senior Civil Engineer

Years of Experience: 24

Education:

  • M.S., Civil Engineering, San Diego State University, San Diego, California (2000)
  • B.S., Civil Engineering, University of Washington, Seattle, Washington (1995)
  • Licensed in 3 states (AZ, CA, WA)

Specialties:

  • Remedial design, permitting, and construction oversight of soil and groundwater systems
  • Construction and Municipal stormwater design and implementation
  • Best management practice and low impact development (LID) design
  • Quality assurance and quality control oversight relating to environmental projects
  • Preparation of procurement bid documents and engineering specifications
  • Engineering and Design
  • Environmental monitoring and compliance
  • Stormwater management
  • Permitting and compliance
  • Dam design, rehabilitation, and inspection
  • Water storage planning and delivery
Mackenzie, Jamie, AP, HR and Payroll Manager

Years of Experience: 6

Education:

  • B.S., Health and Exercise Science, Colorado State University, Fort Collins, CO (1998)

Specialties:

  • Human resource management
  • Accounts payable
  • Payroll input and management
  • New employee on-boarding and orientation
Macrina, Jim, Project Controls and Instrumentation

Years of Experience: 46+

Education:

  • Foxboro School on Instrumentation (1984)
  • Radar and Weapons Control Systems, USAF (1966-1970)
  • Engineering Mathematics, Northeastern University, Boston MA (1965-1966)
  • Electrical Engineering courses, Metropolitan State College, Denver CO (1972-1974)
  • Associates in Business CCD, Red Rocks, Denver, CO (1975)

Specialties:

  • Process and instrumentation design
  • Controls design
  • Instrumentation loop design
  • PLC integration
  • Distributed controls systems (DCS)
  • Complete I and C construction design management
  • Water and wastewater treatment design
  • Motor control systems
  • Oil and gas process design
  • Pump station controls
  • Groundwater recovery
Miller, Eric, B.S., E.I.T., STAFF II Geological Engineer

Years of Experience: 5+

Education:

  • B.S., Geological Engineering, Colorado School of Mines, Golden, CO (2018) 

Specialties:

  • Geotechnical Investigation and Characterization
  • Geotechnical Analysis; Slope Stability, Seepage, Liquefaction Triggering, Settlement and Deformation, and Foundation 
  • Design of Mine Facilities; Tailings Storage Facilities (TSF), Heap Leach Pads, Waste Rock Dumps, Diversion Channels, and Plant Foundations
  • Permitting 
  • Feasibility Studies
  • Siting and Tradeoff Studies
  • Emergency Action Plans 
  • Geotechnical Monitoring Programs 
  • Failure Modes Analysis and Risk Assessment
Monahan, Valerie, Accounting Manager

Years of Experience: 35+

Education:

  • M.B.A., Accounting, Rowan University
  • B.S., Accounting, Rutgers University

Specialties:

  • Accounts Payable
  • Accounts Receivable
  • Taxes – Public & Private
  • Payroll
  • General Ledger
  • Financial Statements and Audits
  • HR
  • Billing
Nelson, Erik, P.E., Vice President, Principal Civil and Geotechnical Engineer

Years of Experience: 39+

Education:

  • B.S., Civil Engineering, Colorado State University, Fort Collins, Colorado (1984)
  • Licensed in 8 states (AZ, CA, CO, FL, MN, NM, TX, WY)

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
  • 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 actions for EPA Superfund sites
  • Construction management services for the construction of large scale remediation systems
  • Feasibility Analyses and Studies
  • Remedial/Mitigation Evaluations and Design
  • Site Assessment and Investigations
  • Post-wildfire hydrologic evaluations
Nelson, John, Ph.D, P.E., P.Eng., D.GE., Principal Geotechnical Engineer

Years of Experience: 50+

Education:

  • Ph.D., Civil Engineering, Illinois Institute of Technology (1967)
  • M.S., Civil Engineering, Illinois Institute of Technology (1962)
  • B.S., Civil Engineering, Illinois Institute of Technology (1960)

Specialties:

  • Expansive soil evaluation and design
  • Forensic studies and remediation design
  • Landslide analysis and mitigation
  • Tailings management
  • Tailings dams
  • Water retention dams
  • Deep and shallow foundation design
  • Water movement in unsaturated soils
  • Mine site reclamation design
  • Mine facilities design
Overton, Daniel, M.S., P.E., P.Eng., D.GE., President and Principal Geotechnical Engineer

Years of Experience: 39

Education:

  • M.S., Civil Engineering (Geotechnical Engineering), University of California, Los Angeles (1988)
  • B.S., Civil Engineering, Colorado State University, Fort Collins, Colorado (1985)
  • Licensed in 20 states (AR, AZ, CA, CO, ID, IL, MT, NE, NV, NM, ND, OK, OR, SD, TX, UT, WA WV, WY)

Specialties:

  • Licensed engineer in 17 States and 2 Canadian Providences
  • 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
  • Expansive soils design
  • Geotechnical instrumentation
  • Engineering and Design
  • Forensic Studies
  • Litigation Support
  • Mining Reclamation
  • Remedial/Mitigation Evaluations and Design
Pacella, Ron, Senior CADD Designer

Years of Experience: 30+

Education:

  • Phoenix Institute of Technology, Architectural drafting and design, Phoenix, AZ (1989)
  • Phoenix Institute of Technology, Computer aided drafting and design, Phoenix, AZ (1990)
  • Phoenix Institute of Technology, Occupational Studies in Architectural & Computer Aided Drafting, Phoenix, AZ (1990)
  • AutoCAD Certified Professional for drafting and design

Specialties:

  • Working drawing interpretations
  • AutoCAD
  • Civil 3D
  • Surveying
  • Construction experience
Park, Rachael, M.S., P.E., Senior Staff Geotechnical Engineer

Years of Experience: 6

Education:

  • M.S., Civil/Geotechnical Engineering, Oregon State University, Corvallis, Oregon (2015)
  • B.S., Civil Engineering, Oregon State University, Corvallis, Oregon (2013)
  • Licensed in 4 states (CO, IL, NM, UT)

Specialties:

  • Geotechnical and environmental consulting
  • Foundation design and remediation
  • Forensic investigations
  • Expansive soils design
  • Field and laboratory investigations
  • Slope stabilization
  • Retaining wall design
  • Geotechnical Design
  • Development & Forensics
  • Environmental and Regulatory Compliance
Puentes, Kenneth, P.G., CHG, Senior Hydrogeologist

Years of Experience:  36

Education:

  • B.S., Geology, San Diego State University, San Diego, CA (1987)
  • Completed M.S. Course Work, San Diego State University, San Diego, CA (1997)

Specialties:

  • Risk Management and Strategic Planning
  • Vapor Intrusion Assessment and Mitigation
  • Regulatory Negotiations and Cleanup Goal Development
  • Public Participation/Community Outreach
  • Soil and Groundwater Contamination Studies
  • Emergent Compound Evaluation and Management
  • Conceptual Site Model (CSM) Development / Numerical Modeling
  • Feasibility and Treatability Studies
  • Remedial Action, Optimization and Performance Review
  • Vapor Assessment and Mitigation
  • Site Assessment and Investigations
  • Remedial Investigations and Site Characterization
  • Remedial/Mitigation Evaluations and Design
Roads, Eric, E.I.T., Staff Environmental Engineer

Years of Experience: 2+

Education:

  • M.S., Civil & Environmental Engineering, Colorado State University (2020)
  • B.S., Environmental Engineering, University of Colorado Boulder (2014)

Specialties:

  • Materials testing
  • Laboratory and field geotechnical engineering work
  • Inspection and Installation oversight
  • Processing and analysis
Ross, Christopher, M.S., P.G., CHG, Senior Hydrogeologist

Years of Experience:   35+

Education:

  • M.S., Geology/Hydrogeology, San Diego State University, San Diego, CA (1987)
  • B.S., Geology, State University of New York at Stonybrook, NY (1983)

Specialties:

  • Soil and Groundwater Contamination Studies
  • Emergent Compounds including Per- and Polyfluoroalkyl Substances (PFAS)
  • Vapor Intrusion Assessment and Mitigation
  • Conceptual Site Model (CSM) Development / Numerical Modeling
  • Feasibility and Treatability Studies / Remedial Design
  • Remedial Action, Optimization and Performance Review
  • Regulatory Negotiations and Cleanup Goal Development
  • Groundwater Sustainability / Basin Water Quality Management
  • Non-Potable Water Reuse
  • Municipal Supply Well Protection
  • Environmental Permitting
  • Risk Management
Runnells, Tim, Principal Water Treatment Designer

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
Schaut, Rob, P.E., Senior Staff Geological Engineer

Years of Experience: 22+

Education:

  • B.S., Geological Engineering, Colorado School of Mines, Golden, CO (1994)
  • M.A., Youth and Family Ministry, Denver Seminary, Denver, CO (2004)
  • Licensed in 3 states (CO, ID, WA)

Specialties:

  • Mine facility and reclamation design
  • Characterization of mine and mine waste facilities
  • Expansive and collapsible soils
  • Forensic geotechnical studies
  • Subsurface investigation
Scholl, Nadja, P.G., Senior Staff Hydrogeologist

Years of Experience:  6

Education:

  • B.S., Geology, University of California, San Diego, CA (2017)

Specialties:

  • Financial forecast and risk assessment
  • PFAS sampling plans
  • Support treatment system design
  • Support conceptual site model development
  • Database creation and management
  • GIS, Strater, Surfer, and MapWindow GIS Modeling
  • Field coordination
  • Remedial Investigations
  • Feasibility Studies
  • Vapor Intrusion Assessment
  • Remedial Action, Optimization and Performance Review
  • Environmental Permitting
Schwall, James, P.E., Senior Chemical Engineer

Years of Experience: 33

Education:

  • B.S., Chemical Engineering, University of California at Davis, California (1988)
  • Licensed in 2 states (AZ, CA)

Specialties:

  • Remedial design, permitting, and construction oversight of soil and groundwater systems for treatment of solvents, 1,4-dioxane, and perchlorate
  • Facility design skills including process, mechanical, control and instrumentation design
  • Managed and optimized ongoing operations of soil and groundwater remediation systems
  • Quality assurance and quality control oversight relating to environmental projects
  • Preparation of procurement bid documents and engineering specifications
  • Mechanical Design
  • Operational Design
  • Remedial Action and Design
  • Industrial Water Treatment
  • Water and Wastewater Treatment
Smith, David, E.I.T.

Years of Experience: 1+

Education:

  • B.S. Civil Engineering, Colorado State University, Fort Collins, CO (2023)

Specialties:

  • Construction Observation
  • Materials Testing
  • Site Civil design
  • Drainage design
Smith, Duane, M.S., P.E., Principal Civil and Geotechnical Engineer

Years of Experience: 45

Education:

  • M.S., Civil Engineering, University of Arkansas (1975)
  • B.S., Civil Engineering, University of Arkansas (1974)
  • Licensed in 2 states (CO, WY)

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
Smith, Natalie, Staff Hydrogeologist

Years of Experience:  3

Education:

  • B.S., Earth Sciences, University of California, Santa Cruz, CA (2020)

Specialties:

  • Hydrology field work and sampling
  • Geologic hazard reporting and mapping
  • Database management
  • Surfer modeling
  • Well and tensiometer implementation
Stearns, Karen, P.E., Vice President, Senior Water Resources and Civil Engineer

Years of Experience: 32

Education:

  • B.S., Civil Engineering, New Mexico State University, Las Cruces, New Mexico (1992)
  • Licensed in 4 states (CO, ND, NM, TX)

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 & Hydraulics for 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
  • Federal, commercial, and industrial facility and community development (e.g., roads, water, sewer, grading, drainage, parking) and program management
  • Civil-related post-wildfire damage assessment, repair plans and cost estimating
  • Emergency response recovery for drainage infrastructure
  • FEMA Flood Insurance Rate Maps and National Flood Insurance Program
  • Forensic assessment of civil-related damages for commercial development
  • Transportation design and construction management on municipal roads to interstate projects
  • Erosion control and sediment transport
  • Water pipelines, tanks, booster pumps, treatment
  • Wastewater pipelines, sludge disposal facilities, monitoring wells
Thompson, Corby, Staff Electrical Engineer

Years of Experience: 3

Education:

  • B.S., Electrical Engineering, Colorado State University (2022)

Specialties:

  • Control systems
  • Design, building and maintenance of radar systems
  • Digital image and signal processing
  • Water and wastewater treatment power and control design
  • Electrical Inspections
Tocher, Richard, M.S., P.E., Principal Geotechnical Engineer

Years of Experience: 40+

Education:

  • M.S., Civil Engineering (Geotechnical Engineering), University of Colorado, Boulder, Colorado (1978)
  • B.S., Civil Engineering, Rensselaer Polytechnic Institute, Troy, New York  (1977)
  • Licensed in 3 states (CO, KS, MT)

Specialties:

  • Dam and reservoir design
  • Geotechnical instrumentation
  • Foundation and slurry wall design
  • Commercial and mid-rise buildings
  • Mine facilities design including tailings impoundments, process solution ponds, and waste rock disposal sites
  • Mine site reclamation design
  • Public works projects
Vara, Abraham, Staff chemical engineer

Years of Experience: 1+

Education:

  • B.S., Chemical Engineering, University of California, San Diego, CA (2023)

Specialties:

  • Design economic calculations
  • P&ID and Mechanical drawing Review
  • Specification Review
  • HAZWOPER Certified
  •  
Vegesna, Ananya, STAFF HYDROGEOLOGIST

Years of Experience: 1

Education:

  • B.S., Earth Sciences, University of Minnesota, Twin Cities, MN (2023) 

Specialties:

  • Hydrology field work and sampling
  • Phase I and Phase II ESA Reports 
  • Geologic mapping, GIS
  • Database Management
  • Geologic Hazard Reporting 
  •  
Wahl, Lisa, P.E., Project Chemical Engineer

Years of Experience: 17+

Education:

  • B.S., Chemical Engineering, University of California, San Diego, California (1988)

Specialties:

  • Remedial design and permitting for soil and groundwater systems
  • Construction oversight for soil remediation
  • Regulatory document preparation and interface
  • Feasibility and treatability studies
  • Work plans and oversight for pilot tests, pre-design investigations
  • Preparation of bid documents and engineering specifications
  • Sustainability evaluation for remedial alternatives
  • Environmental Monitoring & Compliance
  • Feasibility Studies
  • Remedial Action, Optimization and Regulatory Closure
  • Permitting and Compliance
White, AUSTIN, engineering technician

Years of Experience: 1

Education:

  • A.A., General Studies, Laramie County Community College, Cheyenne, Wyoming (2012)

Specialties:

  • Laboratory testing
  • Construction materials observation
Yanez, Anne, Accounting Assistant

Years of Experience: 25+

Education:

  • Rocky Mountain Accounting and Business Center Certificate

Specialties:

  • Accounts Payable
  • Accounts Receivable
  • Human Resources
  • Office Management

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