TH&Co’s professionals integrate statistical methods into their ongoing groundwater basin and hazardous waste site studies as warranted.

• Determination of statistics for spatial data
• Identification of statistical outliers to establish appropriate datasets
• Dataset distribution comparisons
• Calculation of upper confidence limits (UCLs)
• Calculation of upper tolerance limits (UTLs)
• Calculation of background threshold values (BTVs)
• Determination of minimum number of samples needed to establish defensible and cost-effective dataset statistics based on project-specific data quality objectives (DQOs)