PDF RiskBased Levels for Total Petroleum Hydrocarbons (TPH)
RiskBased Levels for Total Petroleum Hydrocarbons (TPH) Tier 3 Site Specific 1. Initial TPH analysis should be TCEQ Method 1005 and be conducted without the use of a silica gel or similar clean up method. 2. Determine the specific fractions of TPH present, aliphatic and aromatic, using TCEQ Method 1006.