3173.6 Water-draining operations.§ 3173.6 Water-draining operations.
When water is drained from a production storage tank, the operator, purchaser, or transporter, as appropriate, must document the following information:
(a) Federal or Indian lease, unit PA, or CA number(s);
(b) The tank location by land description;
(c) The unique tank number and nominal capacity;
(d) Date of the opening gauge;
(e) Opening gauge (gauged manually or automatically), TOV, and free-water measurements, all to the nearest 1/2 inch;
(f) Unique identifying number of each seal removed;
(g) Closing gauge (gauged manually or automatically) and TOV measurement to the nearest 1/2 inch; and
(h) Unique identifying number of each seal installed.