Environmental Protection Agency
- 40 CFR Part 141
- [EPA-HQ-OW-2023-0541; FRL-11620-01-OW]
Correction
In rule document 2024-1530 beginning on page 5773 in the issue of Tuesday, January 30, 2024, make the following corrections:
1. On page 5790, table “Alternative Testing Methods for Disinfectant Residuals Listed at 40 CFR 141.131(c)(1)” should have the column headings:
40 CFR 141.131(c)(1)| Residual | Methodology | SM 21st edition 1 | SM 22nd edition,28 SM 23rd edition,49 SM 24th edition 66 | ASTM 4 | Other |
2. On the same page, table “Alternative Testing Methods for Parameters Listed at 40 CFR 141.131(d)” should have column headings that appear as follows:
| Parameter | Methodology | SM 21st edition 1 | SM 22nd edition 28 | SM 23rd edition,49 SM 24th edition 66 | SM online 3 | EPA | Other |
3. On the same page, table “Alternative Testing Methods for Contaminants Listed at 40 CFR 141.402(c)(2)” should have column headings that appear as follows:
| Organism | Methodology | SM 20th edition 6 | SM 21st edition 1 | SM 22nd edition 28 | SM 23rd edition,49 SM 24th edition 66 | SM online 3 | Other |
4. On the same page, table “Alternative Testing Methods for Contaminants Listed at 40 CFR 141.852(a)(5)” should have column headings that appear as follows:
| Organism | Methodology category | Method | SM 20th, 21st editions 1 6 | SM 22nd edition 28 | SM 23rd edition,49 SM 24th edition 66 | SM online 3 |
5. On page 5792, table “Alternative Testing Methods for Contaminants Listed at 40 CFR 143.4(b)” should have column headings that appear as follows:
| Contaminant | Methodology | EPA method | ASTM 4 | SM 21st edition 1 | SM 22nd edition,28 SM 23rd edition,49 SM 24th edition 66 | SM online 3 |
6. On the same page, table “Alternative Testing Methods for Contaminants Listed at 40 CFR 143.4(b), the entry for Chloride should read as follows:
| Chloride | Silver Nitrate Titration | D 512-04 B, 12 B | 4500-Cl− B | 4500-Cl− B | ||
| Ion Chromatography | D 4327-11, -17 | 4110 B | 4110 B | |||
| Potentiometric Titration | 4500-Cl− D | 4500-Cl− D |
7. On the same page, in the same table, the entry for Sulfate should read as follows:
| Sulfate | Ion chromatography | D 4327-11, -17 | 4110 B | 4110 B | ||
| Gravimetric with ignition of residue | 4500-SO42− C | 4500-SO42− C | 4500-SO42− C-97. | |||
| Gravimetric with drying of residue | 4500-SO42− D | 4500-SO42− D | 4500-SO42− D-97. | |||
| Turbidimetric method | D 516-07, 11, 16 | 4500-SO42− E | 4500-SO42− E | 4500-SO42− E-97. | ||
| Automated methylthymol blue method | 4500-SO42− F | 4500-SO42− F | 4500-SO42− F-97. |