John J. Ward, RG, Groundwater Consultant
Water supply development requires a multi-disciplinary effort, using the skills of civil engineers, geologists and geophysicists, as well as drilling, pump, and electrical contractors. In addition to the larger-scale projects listed below, I have worked with individual property owners on developing groundwater supplies for residential and agricultural needs in the western U.S. I have also worked with industrial clients on development of power plant cooling water supplies, groundwater pumping for contaminant control, and on design and installation of disposal and deep injection wells.
I am versed and regularly utilize simulation software, such as the latest versions of MODFLOW, Goldsim, VS2D, watershed modeling (PRMS and SWAT), and geochemistry (Phreeqc, Netpath).
SELECTED WATER SUPPLY PROJECTS
- Power Plant Supply, Arizona: Designed and costed wellfield, and performance simulations for a 5.8 mgd power plant water supply
- Municipal Water Supply, New Mexico. Designed two conceptual wellfields, simulated performance of 9.7 mgd municipal water supply wells. Developed wellfield costs.
- Municipal Well Water Supply, Arizona: Lead hydrogeologist on 2.3 mgd municipal groundwater supply expansion.
- Replacement Wellfield, Northern Arizona: Consultant on development of multiple high-capacity deep wells to supply coal mine slurry water. Analyzed long term aquifer tests from 3 alternative well sites.
- Groundwater Control, California: Designed, optimized locations and pumping rates, constructed, and operated remedial wellfield for groundwater cleanup, Los Angeles.
- Power Plant Supply, Hawaii: Developed groundwater supplies for two power plants on Oahu. Designed and installed deep injection wells for cooling water disposal.
- Mine Supply, Florida: Developed 5 mgd water supply for phosphate mine development. Installed and tested deep supply wells into the Floridan Aquifer with 4,000 gpm capability.
GROUNDWATER MODELING EXPERIENCE
Large-Scale Groundwater Flow Models:
- Mexico: Regional and Mine Site Groundwater Modeling, Developed 3,600 mi2 regional groundwater model with embedded multi-level nested minesite model to simulate pit shell and progressive mine dewatering and pit lake recovery.
- Arizona: N-Multiple-Aquifer-System, 6,000 mi2, wellfield design and prediction of impacts, in support of Federal reserved water rights adjudication.
- Arizona/New Mexico: C-Multiple-Aquifer-System, 27,000 mi2, impacts of projected growth in groundwater use, in support of Federal reserved water rights adjudication.
- Los Angeles: Central Basin and Coastal Plain Aquifer System, 600 mi2 regional model, to develop effective dewatering designs and predict dewatering rates and contaminant transport into depressed section of I-105.
- New Mexico: Roswell Artesian Basin, 4,500 mi2 regional model, including wellfield design and prediction of impacts from tribal water development.
- New Mexico: San Juan Basin, 21,000 mi2 model to predict impacts from mine dewatering on water levels and stream flow.
Subregional and Site Flow Models:
- Los Angeles: Remedial Wellfield, numerical groundwater model to optimize well locations and pumping rates under multi-objective operation (mass removal, capture).
- Arizona: Class I Hazardous Waste Site, saturated/unsaturated numerical flow model for siting of facility, development of impact predictions from various release scenarios.
- California: Dewatering Landfill Addition, Yolo County. Predicted effects of landfill depth configurations and flooding in adjacent waterways based on seasonal water tables.
- Arizona: variably saturated flow model of vertical moisture migration through adobe and clayey soils into adobe walls.
- Arizona: Power plant wellfield design and optimization, developed numerical model and wellfield costing model to optimize wellfield configuration.
Contaminant and Vapor Flow Models:
- Model Brine discharge into New Mexico River, transport model of remediation scenarios from brine discharge from Permian Basin into river and downstream reservoirs.
- New Mexico, transport model of tailings leakage into groundwater and streams, predicted natural attenuation times from various leakage interception strategies.
- Arizona, contaminant migration from septic systems into potable groundwater using analytical and numerical transport models.
- California, numerical soil gas model to predict sweeping efficiency of soil vapor extraction on deep vadose zone contamination