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Applying for Coverage Under the General Permit for Discharges of Hydrostatic Test Water

Steps to complete, and requirements to meet, to obtain coverage under the general permit TXG670000, which covers certain discharges of hydrostatic test water in Texas. Links to forms and guidance.

Before releasing hydrostatic test water into or adjacent to water in the state of Texas, you must do the following:

1. Review your facility's compliance history ranking(HTML):

    • a. If your facility has a ranking of “high performer”, “satisfactory performer,” or "inadequate information," continue with Item 2.
    • b. If the compliance history ranking is “unsatisfactory performer,” then your facility is not eligible for coverage under a general permit. You must apply for an individual permit instead.

2. Read the Hydrostatic Test General Permit TXG670000Microsoft Word Document to make sure it applies to your situation.

a. If the general permit does NOT apply, you may need to obtain an individual permit.

b. If the general permit does apply, continue with item 3.

3. Determine if a Notice of Intent is required to obtain coverage under the general permit.

  • a. If you are hydrostatically testing one of the following types of vessels, you do not need to submit a Notice of Intent to obtain coverage under the general permit. You simply comply with the requirements of the general permit.
    • a new vessel;
    • an existing vessel that contains or previously contained or transferred raw or potable water, where the water used for hydrostatic tests does not contain corrosion inhibitors, antifreeze compounds, biocides, or other chemical additives (except chlorine or tracer dyes); or
    • an existing vessel that previously contained only elemental gases (hydrogen, oxygen, nitrogen, etc.)
  • b. If you are hydrostatically testing an existing vessel that previously contained petroleum product or waste related to petroleum products, you must submit a notification package, which includes:

Provisional coverage under this general permit begins 48 hours after the NOI is postmarked.

After TCEQ review, you will receive one of the following:

  • An Acknowledgment Letter providing authorization for coverage,
  • A Notice of Deficiency, in which case you will have 30 days in which to respond, or
  • A Denial Letter informing you that coverage has been denied (usually the result of information requested in a Notice of Deficiency letter not being fully provided).

After obtaining coverage under this permit, you will need to do the following:

Adhere to the requirements of the general permit (TXG670000Microsoft Word Document)

  • Complete and submit the EPA's Discharge Monitoring Report Form (3320-1), as required.
  • If the owner or operator changes, the present owner and operator must submit a Notice of TerminationMicrosoft Word Document(NOT) and the new owner and operator must submit a NOI. The NOT and NOI must be submitted at least 10 days before the changes.
  • If the discharge becomes unnecessary, is delayed or is completed, the permittee must terminate coverage by submitting a NOT. The permit is in effect until the NOT is submitted. Annual Water Quality fees will accrue each year on September 1.

    Note: If you are discharging to an MS4 (HTML), you must submit a copy of the Notice of Intent (NOI) and Notice of Termination to the operator of that system at the same time you submit them to the TCEQ. MS4s can include things such as ditches, streets, gutters, manmade channels, etc., which are maintained by entities such as the city, state, county, drainage district, etc.

Even if the general permit described above applies to your situation, you may request coverage under an individual permit (HTML).

Contact us if you have questions.