Darrell Peckham’s Resume

Darrell Peckham

Professional Experience

2000 - Present Consulting Hydrogeologist
Thornhill Group, Inc.
Round Rock, Texas
1985 - 2000 Geologist
Texas Water Development Board
Austin, Texas

Education

Sul Ross State University, Alpine, Texas

BACHELOR OF SCIENCE DEGREE, 1984

Major: Geology — Minor: Geography (Remote Sensing) / Math

Professional Licenses and Certification

Licensed Professional Geoscientist, Geology, Texas Board of Professional Geoscientists (TBPG) – License No. 639

Professional Affiliations

National Ground Water Association

Texas Mining and Reclamation Association

Publications

Coker, D., et. al, Public Supply Ground-Water Use in the Northern High Plains of Texas; TWDB, Report 336, February 1992.

Coleman, P.E., and Peckham, Darrell S., Well Owners’ guide to Regional Groundwater Availability Models, 2004 High Plains Groundwater Resources: Challenges and Opportunities Conference Proceedings, December 7-9, 2004.

Derton, J. and Peckham, D., Groundwater Conditions, Gaines County, Texas, TWDB Open-File Report 98-01.

Godsey, W.E., and Peckham, D.S., An Assessment of Ground-Water Resources, Evaluation of Raw Water Supply Well Performance and Recommendations for Future Development; East Texas Environmental Consultants, July 1991.

Peckham, D.S. and Ashworth, J.B., Current Status and Projection of Ground-Water Reserves in the Texas high Plains Ogallala Aquifer; (ed) Lloyd V. Urban and A. Wayne Wyatt, Proceedings of the Playa Basin Symposium, Texas Tech University, May, 1994.

Peckham, D.S., Ground Water Protection and Management Strategies of East Texas; TWC, Interim Report, 1989.

Peckham, D.S., Summary Report of Ground Water in Crockett County, Texas; TWDB, November, 1993.

Specialized Training/Classes

Solving Ground Water Problems with Models, IGWMC, February, 1992

Effective Oral Presentations, University of Texas at Austin, March, 1991

Numerical Analysis Methods for Computer Programming, TWC/Austin Community College, Spring, 1989

DB4 Query Language, TWC Data Processing Education Program, July, 1988

OS 1100 Control Language, TWC Data Processing Education Program, July, 1988

Practical Approaches to Ground-Water Hydrology and Contamination, Oklahoma State University, Graduate Credit, July 1987

Sperry Sorting Techniques, TWC Data Processing Education Program, May 1987

Functions of Map Processor, TWC Data Processing Education Program, July 1986

Edit Processor for Data Handlers, TWC Data Processing Education Program, June 1986

Basic Computer Concepts, TWC Data Processing Education Program, May 1986

Experience Highlights

  • Formerly employed by the Texas Water Development Board/Texas Water Commission with 15 years experience conducting groundwater studies in various aquifers across the state of Texas, including groundwater resources evaluations, regional water management plans and recharge studies.
  • Extensive background in computer modeling used to generate groundwater availability projections studies such as the Texas Water Plan.
  • Designed, developed, implemented and supervised state-wide "Textural GIS" for the automation of determining the recommended depth of protection of useable-quality ground water in oil and gas wells.

Examples of types of work include:

  • Aquifer and Water Availability Assessments
    • Conducted ground water resources evaluation as a member of the availability/allocation unit specializing in West Texas studies.
    • Contract Manager for the High Plains Regional Water Management Planning Grant.
    • Contract Manager for the Ryan Flat Recharge Study Planning Grant.
    • Conducted the Salt Basin Ground-Water Resources Study.
    • Provided technical support and review for Texas Water Development Board Aquifer Storage and Recovery (ASR) report to the Texas Legislature (1995).
  • Ground Water Modeling/GIS
    • Operated and maintained a digital ground-water flow model used to generate availability projections for the Texas Water Plan
    • As a member of the Trans-Boundary Aquifer Study Team coordinated and implemented the GIS coverage development, documentation, and data transfer for the project.
    • Assisted in the development and completion of special studies and ground water models including obtaining/developing data as well as evaluating new technologies, software and hardware for the Texas Water Development Board.
    • Created and assessed various modeling techniques for applicability to the Trinity aquifer and Aquifer Storage and Recovery (ASR) evaluations.
  • Permitting and Other Submittals to State/Local Agencies
    • Approval for construction and usage of water wells for public water systems – Texas Natural Resources Conservation Commission (Water Utilities Division).
  • Geologic Assessments
    • Lignite drilling, coring, coal quality sampling and analyses.
    • Geophysical log interpretations.
  • Field Investigations
    • Designed, conducted and managed numerous field programs for collecting geologic and hydrologic information.
    • Well inventory, drilling, aquifer testing, sampling and geologic mapping.
  • Geographical Information Systems
    • Evaluated ArcInfo TIN processing versus Surfer algorithms to determine application specific best method for generating interpolated values for finite-difference cell nodes.
    • DEM processing.
    • Interpolating irregularly spaced data into finite-difference configuration.
    • Developed a fully operational "Textural GIS" application.
    • Developed spatial data evaluation and display techniques for various hydrogeologic reports.
  • Technology Transfer
    • Developed spatial data evaluation and display techniques for various hydrogeologic reports.
    • Designed and instructed a Surfer Mapping class.
    • Contract management of an Ogallala Area regional water planning effort, which included participating in Management Committee, Executive Committee and Planning Group functions working with representatives of State, county, Municipal, Underground Water Conservation Districts, River Authorities, Industry Associations and the general public, funded by TWDB.
    • Contract management of a Ryan Flat recharge study, funded by TWDB.
    • Participated in the Governor’s Drought Information Tour, 1996.
    • Assisted various UWCD’s in ArcView applications, ground-water data collection efforts, mapping/graphics development, data transfers and program (and systems) development.
    • Participated as Technical Information Advisor at various County Commissioner, District Director’s and City Council meetings throughtout the State of Texas.
    • Co-Represented the TWDB (State of Texas) at the 1994 Water Resources Management Information Systems Conference of the western States, GIS workshop. Included oral presentation.