---
kind: "section"
citation: "40 C.F.R. § 63.170"
title: "40"
number: "63.170"
heading: "Standards: Surge control vessels and bottoms receivers."
url: "https://uscodex.org/cfr/40/63.170"
---

# §63.170. Standards: Surge control vessels and bottoms receivers.

- (a) Except as specified in [paragraph (b)](#b) of this section, each surge control vessel or bottoms receiver that is not routed back to the process and that meets the conditions specified in table 2 or table 3 of this subpart shall be equipped with a closed-vent system that routes the organic vapors vented from the surge control vessel or bottoms receiver back to the process or to a control device that complies with the requirements in [§ 63.172](/cfr/40/63.172.md), except as provided in [§ 63.162(b)](/cfr/40/63.162.md?p=b), or comply with the requirements of § [63.119(b)](/cfr/40/63.119.md?p=b) or [(c)](/cfr/40/63.119.md?p=c).
- (b) For each source as defined in [§ 63.101](/cfr/40/63.101.md), and for each source as defined in [§ 63.191](/cfr/40/63.191.md), beginning no later than the compliance dates specified in [§ 63.100(k)(10)](/cfr/40/63.100.md?p=k-10), [paragraph (a)](#a) of this section no longer applies. Instead, each surge control vessel and bottoms receiver that is not routed back to the process and emits greater than or equal to 1.0 lb/hr of total organic HAP must be equipped with a closed-vent system that routes the organic vapors vented from the surge control vessel or bottoms receiver back to the process or to a control device that complies with the requirements in [§ 63.172](/cfr/40/63.172.md), except as provided in [§ 63.162(b)](/cfr/40/63.162.md?p=b), or comply with the requirements of § [63.113(a)(1)](/cfr/40/63.113.md?p=a-1) or [(a)(2)](/cfr/40/63.113.md?p=a-2).

## Notes

### Amendments

[89 FR 43224, May 16, 2024]

### Source

Source: 59 FR 19568, Apr. 22, 1994, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7401 et seq.

### Source

Source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.

### Amendments

[89 FR 43224, May 16, 2024]