Pre-Drilling Tests

Tier parameters are based on "Recommendations for drinking water well sampling before oil and gas drilling," ODNR, ODH, and OEPA, January 2014.



Tier 1 Parameters:


  • Barium
  • Chloride
  • Magnesium
  • Potassium
  • Sodium
  • Strontium
  • Sulfate
  • Solids, Total Dissolved (TDS)
  • Specific Conductivity
  • Dissolved Methane



Tier 2 Parameters:


  • Calcium
  • Hardness
  • Total Alkalinity
  • pH
  • Iron
  • Manganese
  • Solids, Total Suspended (TSS)
  • Bromide



Tier 3 Parameters (BTEX):


  • Benzene
  • Toluene
  • Ethylbenzene
  • Xylenes