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  • Executive Management
  • Principal Professionals

JOHN AYARBEJohn Ayarbe, PG, PG

Principal Hydrologist
Albuquerque, New Mexico

  • Environmental permitting and compliance for mines
  • Groundwater and vadose zone hydrology
  • Environmental site characterization
  • Aquifer testing and analysis
READ BIO

Neil Blandford

T. NEIL BLANDFORD, PG

Senior Vice President, Principal Hydrologist
Albuquerque, New Mexico

  • Groundwater and contaminant transport modeling
  • Water rights analysis
  • Water supply investigations
  • Expert testimony and litigation support
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Farag Botros, PEFARAG BOTROS, PE

Principal Engineer
Costa Mesa, California

  • Watershed modeling for water rights
  • Contaminant fate and transport modeling
  • Litigation support
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John BunchJohn Bunch, PG

Principal Scientist
Albuquerque, New Mexico

  • Brownfields redevelopment
  • Corrective action/remedial design plans
  • Phase I and II environmental investigations
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Kenny CalhounKenny Calhoun, GISP

Geographic Information Systems Manager
Albuquerque, New Mexico

  • Geographic information systems
  • Aerial and satellite imagery analysis
  • Environmental database development
  • Expert testimony and litigation support
READ BIO

John Casey
JOHN CASEY, PE

Principal Engineer
Durango, Colorado

  • Oil and gas
  • Hydrogeologic investigations
  • Remedial action plans
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John Dodge, PGJohn J. Dodge, PG, CHG

Principal Hydrogeologist
Costa Mesa, California

  • Soil and groundwater contaminant hydrogeology
  • Site investigation and remediation
  • Litigation support
READ BIO

Amy EwingAmy Ewing, PG

​Principal Hydrogeologist
Albuquerque, New Mexico

  • Water resources planning and development
  • Managed aquifer recharge
  • Watershed management
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jennifer hill, pe

​Principal Engineer
Albuquerque, New Mexico

  • Water, wastewater, and reuse infrastructure engineering
  • Utility master planning and asset management
  • Construction observation and operations support
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Joleen Hines

Soil Testing and Research Laboratory Manager
Albuquerque, New Mexico

  • Soil testing
  • Research and development
  • Sensor calibration
READ BIO

Hopson_Kevin_2-WH-BG

KEVIN S. HOPSON, PG

​Vice President – Texas Operations, Principal Scientist
Austin, Texas

  • Environmental investigation and remediation
  • Groundwater remediation
  • Superfund
  • Oil and gas
READ BIO

JAMES A. KELSEY, PG

President, Principal Scientist
Albuquerque, New Mexico

  • Vadose zone hydrology
  • Hydraulic properties and groundwater testing
  • Instrumentation and automated data acquisition
  • Evapotranspiration covers
READ BIO

TONY MORGAN, PG, CHG Vice President and Principal Hydrogeologist

TONY MORGAN, PG, CHG

​Vice President, Principal Hydrogeologist
Santa Barbara, California

  • Conjunctive use programs
  • Groundwater supply exploration and development
  • Hydrogeology
  • Litigation support
READ BIO

Gundar Peterson

GUNDAR PETERSON, PE

Vice President – New Mexico Operations, Principal Engineer
Albuquerque, New Mexico

  • Contaminated soil and groundwater investigation and remediation
  • Hazardous and municipal waste facility permitting and engineering
  • Stormwater engineering
READ BIO

Gregory Schnaar, PhD, PG

Director of Expert Services, Principal Environmental Scientist
Silver Spring, Maryland

  • Groundwater and vadose zone flow and transport modeling
  • Contaminant fate and transport
  • Basin-scale hydrologic studies and safe-yield analysis
  • Expert testimony and litigation support
READ BIO

Nicole Sweetland

NICOLE T. SWEETLAND, PHD, PG

Principal Hydrogeologist, DBS&A
President, Geo-Logic Associates
Santa Barbara, California

  • Hydrogeology
  • Environmental forensics
  • Contaminant fate and transport
  • Expert testimony and litigation support
READ BIO

Stephens_Dan_1preferred-WH BG

DANIEL B. STEPHENS,
PhD, PHg, PG

Founder, Principal Hydrologist
Albuquerque, New Mexico

  • Hydrogeology
  • Environmental forensics
  • Remedial action programs
  • Expert testimony and litigation support
READ BIO

Todd Umstot

TODD UMSTOT

Principal Hydrogeologist
Albuquerque, New Mexico

  • Watershed modeling for water rights
  • Contaminant fate and transport modeling
  • Expert testimony and litigation support
 
READ BIO

Chris Wolf, PG

CHRISTOPHER WOLF, PG

Principal Geochemist
Albuquerque, New Mexico

  • Geochemistry and water quality
  • Water supply wells
  • Expert testimony and litigation support
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Janet Wolfe

JANET H. WOLFE, CPSM

Director of Business Development
Albuquerque, New Mexico

  • Communications and outreach
  • Public involvement
  • Business development
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Daniel B. Stephens & Associates, Inc.


6020 Academy Road NE Suite 100
Albuquerque, New Mexico 87109

Phone  505-822-9400
Fax  505-822-8877

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