C1-2024-01530. Expedited Approval of Alternative Test Procedures for the Analysis of Contaminants Under the Safe Drinking Water Act; Analysis and Sampling Procedures

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:

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.