---
kind: "section"
citation: "43 C.F.R. § 3173.6"
title: "43"
number: "3173.6"
heading: "Water-draining operations."
url: "https://uscodex.org/cfr/43/3173.6"
---

# §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.**

## Notes

### Authority

Authority: 25 U.S.C. 396d and 2107; 30 U.S.C. 189, 306, 359, and 1751; and 43 U.S.C. 1732(b), 1733, and 1740.

### Source

Source: 81 FR 81421, Nov. 17, 2016, unless otherwise noted.