Horizon Staff

To view a staff member's résumé summary, please click on his or her name. The résumé summaries are in Adobe Acrobat PDF format.

JoAnn Wiersema, President

Corporate Management, Project Management, Human Toxicology, Animal Toxicology, Health Effects Review of Air Monitoring Data, Health Effects of Air Pollution, Risk Communication

Lynda Sherrod, Vice President

Corporate Management, Project Management, Mine Services Consultation, Wetland Creation Supervision, TxDOT Environmental Services, Marketing, and Client Coordination

Jim Wiersema, Partner

Water Resources, Permitting Assistance: NPDES/TPDES, State Water Quality, Water Rights, 404/10, RCT, SRF EAs, Threatened or Endangered Species, Mitigation Banking, Aquatic Ecology, Fisheries, Pond Design and Management

Lee Sherrod, Partner

Wetlands, Threatened or Endangered Species, Section 10(a) Permit Assistance, Vegetation and Wildlife, 404/10 Permit Assistance, Mitigation Banking, Stormwater Permit Assistance, ROW Studies, TxDOT and TWDB Environmental Assessments

Shannon Dorsey, Principal, Ecology Group Manager

Phase I and II Environmental Site Assessments, Wetlands, 404/10 Permit Assistance, ROW Studies (Environmental Inspection), Threatened or Endangered Species, FERC Requirements, Stormwater Permit Assistance

Russ Brownlow, Principal, Cultural Resources Director

Cultural Resources Director. CRM Surveys, Testing, Mitigation, Section 106 Compliance, Texas Antiquities Code Compliance, Register of Professional Archeologists Certified, and meets Secretary of the Interior Standards and Guidelines for Archeology

Ken Carothers, Director of Business Development - email

Director of Business Development/Senior Project Manager. Threatened and Endangered Species Surveys, Section 7 Consultation, Section 10(a) Permit Assistance, Habitat Conservation Planning, Wetland Delineation and 404 Permit Assistance, Habitat Assessment, Mitigation Planning, Phase I Environmental Site Assessment

John Alesch

Computer Graphics, GIS, CAD, Geologic Drafting, Surface Modeling, Land Surface and Potentiometric Surface Contouring, Boring Log/Geophysical Log Generation, General Mapping

Bill Bauer

Document Editing and Report Production

Kris Billings

Phase I Environmental Site Assessment project support, City of Austin Environmental Assessments, City of Austin Habitat Assessments, Report exhibit generation, Phase II sample collection, Central Texas Threatened or Endangered Species Survey, CRM Surveys

Cora Caffey

Reception and Administrative Support

Ashley Caldwell

Human Resources, Office Management, and Administrative Support

Tony Chapa, Archeological Principal Investigator

CRM Surveys, Testing, Mitigation, Section 106 Compliance, Texas Antiquities Code Compliance

Michelle Dorsey

Wildlife Biology, Water Quality Monitoring, Environmental Site Assessments, Phase I Environmental Site Assessments, Research and Reports, Threatened or Endangered Species, Habitat Assessments

Scott Flesher

Wetlands, 404/10 Permit Assistance, Threatened or Endangered Species, Habitat Assessments, Phase I Environmental Site Assessments, Research and Reports, Computer Graphics, GIS Mapping, Figure Generation, General Mapping

Michael Mudd

CRM Surveys, Testing, Mitigation, Section 106 Compliance, Texas Antiquities Code Compliance

Jesse Owens

Archaeological Principal Investigator/Project Manager. CRM Surveys, Eligibility Testing, Mitigation & Data Recovery Projects; Research Designs and Cultural Resource Management Plans; NHPA Section 106 Compliance; FERC Document Preparation & Compliance Monitoring; Native American Consultation; Texas Antiquities Code Compliance; TxDOT Precertified; Register of Professional Archeologists Certified; Meets Secretary of the Interior Standards and Guidelines for Archeology

Greg Sherrod

Phase I ESA Project Support, Field Investigation, Project Record Searches, Threatened/ Endangered Species Surveys and 10(a) Permitting, City of Austin Environmental and Habitat Assessments, Section 404 Jurisdictional Determinations/Delineations, Karst Surveys

Jared Wiersema

CRM Surveys, Testing, Mitigation, Section 106 Compliance, Texas Antiquities Code Compliance

David Young

Phase I and II Environmental Site Assessments, Asbestos Inspection, Remediation Systems, Hazardous Material Risk Identification, Water Quality Monitoring, Indoor Air Quality Testing, OSHA Hazardous Waste Operations (HAZWOPER) Training