Z9-27044. 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 E9-27044 beginning on page 57908 in the issue of November 10, 2009, make the following correction:

1. On page 57915, the second table should appear as follows:

Alternative Testing Methods for Contaminants Listed at 40 CFR 141.21(f)(6)

Organism	Methodology	SM 20th edition 6	SM 21st edition 1	SM online 3	Other
E. coli	ONPG-MUG Test	9223 B	9223 B	9223 B-97
					Modified Colitag TM13

2. On page 57917, the first table should appear as follows:

Alternative Testing Methods for Contaminants Listed at 40 CFR 141.131(b)(1)

Contaminant	Methodology	EPA method	ASTM 4	SM 21st edition 1
*         *         *         *         *         *
HAA5	LLE (diazomethane)/GC/ECD			6251 B
	Ion Chromatography Electrospray Ionization Tandem Mass Spectrometry (IC-ESI-MS/MS)	557 14
Bromate	Two-Dimensional Ion Chromatography (IC)	302.0 18
	Ion Chromatography Electrospray Ionization Tandem Mass Spectrometry (IC-ESI-MS/MS)	557 14
	Chemically Suppressed Ion Chromatography		D 6581-08 A
	Electrolytically Suppressed Ion Chromatography		D 6581-08 B
Chlorite	Chemically Suppressed Ion Chromatography		D 6581-08 A
	Electrolytically Suppressed Ion Chromatography		D 6581-08 B

3. On page 57917, the fourth table heading, Alternative Testing Methods With MRL > 0.0010 mg/L for Monitoring Listed at 40 CFR 141.132(b)(3)(ii)(B) should read Alternative Testing Methods With MRL ≤ 0.0010 mg/L for Monitoring Listed at 40 CFR 141.132(b)(3)(ii)(B).

4. On page 57918, the table should appear as follows:

Alternative Testing Methods for Contaminants Listed at 40 CFR 143.4(b)

Contaminant	Methodology	EPA Method	ASTM 4	SM 21st edition 1	SM Online 3
	*         *         *         *         *         *         *
Sulfate	Ion Chromatography			4110 B
	Gravimetric with ignition of residue			4500-SO4−2 C	4500-SO4−2 C-97
	Gravimetric with drying of residue			4500-SO4−2 D	4500-SO4−2 D-97
	Turbidimetric method		D 516-07	4500-SO4−2 E	4500-SO4−2 E-97
	Automated methylthymol blue method			4500-SO4−2 F	4500-SO4−2 F-97
	*         *         *         *         *         *         *