Hydrostatic Test Water Discharges: Am I Regulated?
If you plan to release discharges resulting from the hydrostatic testing of vessels (pipelines, tanks, and other containers) into water in the state
you must have a permit. You may qualify for coverage under general permit TXG670000
. (Help with PDF.) The following discharges are authorized from new and existing vessels under this general permit.
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vessels previously containing and/or transferring 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)
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existing vessels that formerly contained only elemental gases (e.g. hydrogen, oxygen, nitrogen, etc.)
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existing vessels previously containing product or waste related to refined petroleum products
Please feel free to contact us if you have questions.



