---
kind: "section"
citation: "40 C.F.R. § 60.52Da"
title: "40"
number: "60.52Da"
heading: "Recordkeeping requirements."
url: "https://uscodex.org/cfr/40/60.52Da"
---

# §60.52Da. Recordkeeping requirements.

- (a) [Reserved]
- (b) The owner or operator of an affected facility subject to the opacity limits in [§ 60.42Da(b)](/cfr/40/60.42Da.md?p=b) that elects to monitor emissions according to the requirements in [§ 60.49Da(a)(3)](/cfr/40/60.49Da.md?p=a-3) shall maintain records according to the requirements specified in [paragraphs (b)(1) through (3)](#b-1..b-3) of this section, as applicable to the visible emissions monitoring method used.
  - (1) For each performance test conducted using Method 9 of appendix A-4 of this part, the owner or operator shall keep the records including the information specified in [paragraphs (b)(1)(i) through (iii)](#b-1-i..b-1-iii) of this section.
    - (i) Dates and time intervals of all opacity observation periods;
    - (ii) Name, affiliation, and copy of current visible emission reading certification for each visible emission observer participating in the performance test; and
    - (iii) Copies of all visible emission observer opacity field data sheets;
  - (2) For each performance test conducted using Method 22 of appendix A-4 of this part, the owner or operator shall keep the records including the information specified in [paragraphs (b)(2)(i) through (iv)](#b-2-i..b-2-iv) of this section.
    - (i) Dates and time intervals of all visible emissions observation periods;
    - (ii) Name and affiliation for each visible emission observer participating in the performance test;
    - (iii) Copies of all visible emission observer opacity field data sheets; and
    - (iv) Documentation of any adjustments made and the time the adjustments were completed to the affected facility operation by the owner or operator to demonstrate compliance with the applicable monitoring requirements.
  - (3) For each digital opacity compliance system, the owner or operator shall maintain records and submit reports according to the requirements specified in the site-specific monitoring plan approved by the Administrator.

## Notes

### Amendments

[74 FR 5083, Jan. 28, 2009, as amended at 77 FR 9459, Feb. 16, 2012]

### Source

Source: 72 FR 32722, June 13, 2007, unless otherwise noted.

### Authority

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

### Source

Source: 36 FR 24877, Dec. 23, 1971, unless otherwise noted.

### Amendments

[74 FR 5083, Jan. 28, 2009, as amended at 77 FR 9459, Feb. 16, 2012]