TCEQ Method 1005, Revision 03, Total Petroleum Hydrocarbons, went into effect June 1, 2001. The method may be used in lieu of EPA Method 418.1 for the analysis of total petroleum hydrocarbons. This revision supersedes Revisions 01 and 02 and the revision dated April 13, 1998.

Please note the analysis now includes heavier hydrocarbons — nC28 to nC35. Data produced using Revision 03 should be reported to nC35, unless the environmental medium of concern or suspected source of TPH does not contain hydrocarbons in the heavier range.

Results from analyses using earlier versions of Method 1005 may not include data for C28 to nC35. However, these results will be accepted if the analyses were conducted according to the version of the method in effect at the time.

Programs and Activities Affected

Affected programs and activities include, but are not necessarily limited to:

• Industrial Waste Classification
• Waste Characterization for Disposal
• Municipal Solid Waste Monitoring
• Petroleum Storage Tank Removal and Remediation
• Corrective Action Investigation and Remediation, whether or not covered by the Resource Conservation and Recovery Act
• Spill Response Monitoring
• Superfund Investigation and Remediation
• Voluntary Cleanup Investigation and Remediation

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