---
kind: "section"
citation: "40 C.F.R. § 98.527"
title: "40"
number: "98.527"
heading: "Records that must be retained."
url: "https://uscodex.org/cfr/40/98.527"
---

# §98.527. Records that must be retained.


In addition to the records required by [§ 98.3(g)](/cfr/40/98.3.md?p=g), you must retain the records specified in [paragraphs (a) through (d)](#a..d) of this section for each ceramics process unit, as applicable.

- (a) If a CEMS is used to measure CO2 emissions according to the requirements in [§ 98.523(a)](/cfr/40/98.523.md?p=a), then you must retain under this subpart the records required under [§ 98.37](/cfr/40/98.37.md) for the Tier 4 Calculation Methodology and the information specified in paragraphs [(a)(1)](#a-1) and [(2)](#a-2) of this section.
  - (1) **Monthly ceramics production rate for each ceramics process unit (tons).**
  - (2) **Monthly amount of each carbonate-based raw material charged to each ceramics process unit (tons).**
- (b) If process CO2 emissions are calculated according to the procedures specified in [§ 98.523(b)](/cfr/40/98.523.md?p=b), you must retain the records in [paragraphs (b)(1) through (6)](#b-1..b-6) of this section.
  - (1) **Monthly ceramics production rate for each ceramics process unit (metric tons).**
  - (2) Monthly amount of each carbonate-based raw material charged to each ceramics process unit (metric tons).
  - (3) Data on carbonate-based mineral mass fractions provided by the raw material supplier for all raw materials consumed annually and included in calculating process emissions in equation 1 to [§ 98.523(b)(4)](/cfr/40/98.523.md?p=b-4), if applicable.
  - (4) Results of all tests, if applicable, used to verify the carbonate-based mineral mass fraction for each carbonate-based raw material charged to a ceramics process unit, including the data specified in [paragraphs (b)(4)(i) through (v)](#b-4-i..b-4-v) of this section.
    - (i) **Date of test.**
    - (ii) **Method(s), and any variations of methods, used in the analyses.**
    - (iii) **Mass fraction of each sample analyzed.**
    - (iv) **Relevant calibration data for the instrument(s) used in the analyses.**
    - (v) **Name and address of laboratory that conducted the tests.**
  - (5) Each carbonate-based mineral mass fraction for each carbonate-based raw material, if a value other than 1.0 is used to calculate process mass emissions of CO2.
  - (6) **Number of annual operating hours of each ceramics process unit.**
- (c) **All other documentation used to support the reported GHG emissions.**
- (d) **The applicable verification software records as identified in this paragraph (d).** You must keep a record of the file generated by the verification software specified in [§ 98.5(b)](/cfr/40/98.5.md?p=b) for the applicable data specified in [paragraphs (d)(1) through (3)](#d-1..d-3) of this section. Retention of this file satisfies the recordkeeping requirement for the data in [paragraphs (d)(1) through (3)](#d-1..d-3) of this section.
  - (1) Annual average decimal mass fraction of each carbonate-based mineral in each carbonate-based raw material for each ceramics process unit (specify the default value, if used, or the value determined according to [§ 98.524](/cfr/40/98.524.md)) (percent by weight, expressed as a decimal fraction) (equation 1 to [§ 98.523(b)(4)](/cfr/40/98.523.md?p=b-4)).
  - (2) Annual mass of each carbonate-based raw material charged to each ceramics process unit (tons) (equation 1 to [§ 98.523(b)(4)](/cfr/40/98.523.md?p=b-4)).
  - (3) Decimal fraction of calcination achieved for each carbonate-based raw material for each ceramics process unit (specify the default value, if used, or the value determined according to [§ 98.524](/cfr/40/98.524.md)) (percent by weight, expressed as a decimal fraction) (equation 1 to [§ 98.523(b)(4)](/cfr/40/98.523.md?p=b-4)).

## Notes

### Source

Source: 89 FR 31948, Apr. 25, 2024, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7401-7671q.

### Source

Source: 74 FR 56374, Oct. 30, 2009, unless otherwise noted.