Groundwater & Wastewater


GTA’s water resources exploration and development capabilities include prospecting for groundwater supplies, water supply well development, aquifer/yield testing and permit services. GTA provides comprehensive groundwater resource development and on-site wastewater disposal services to residential, commercial, industrial, and government clientele. GTA also performs stormwater management testing services, including inflow well development, well capacity testing, and numerical groundwater flow modeling associated with the use of Class V stormwater inflow wells. GTA’s capabilities include stream and stormwater management BMP monitoring, including evaluation of mass pollutant reduction via stormwater BMPs. We assist clients through risk identification and management, and serving as a client advocate. GTA’s areas of specialization are as follows:
  • Fracture Trace Analysis
  • Geophysical Surveys
  • Test Well Siting
  • Test Well Drilling (subcontracted)
  • Test Pump Installation / Removal
  • Aquifer Testing
  • Yield and Aquifer Impact Evaluations
  • Water Supply and Wastewater Permit Services
  • Dewatering Evaluations
  • Expert Testimony
  • Numerical Groundwater Flow Modeling
  • On-Site Wastewater Disposal Feasibility Evaluations for Individual Lots and Large Systems
  • Soil Profile Evaluation
  • Infiltrometer and Percolation Testing
  • Spray Irrigation Evaluations
  • Nutrient and Hydraulic Loading Analysis
  • Monitor Well Installation, Sampling, Observation
  • Groundwater Mounding Analysis
  • Class V Stormwater Well Drilling (subcontracted) and Testing
  • SWM BMP Monitoring Services
  • Streamflow Measurement and Automated Sampling