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Expedited Approval of Alternative Test Procedures for the Analysis of Contaminants Under the Safe Drinking Water Act; Analysis and Sampling Procedures

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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)

OrganismMethodologySM 20th edition 6SM 21st edition 1SM online 3Other
E. coliONPG-MUG Test9223 B9223 B9223 B-97
Modified Colitag TM13

2. On page 57917, the first table should appear as follows:Start Printed Page 63070

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

ContaminantMethodologyEPA methodASTM 4SM 21st edition 1
*         *         *         *         *         *         
HAA5LLE (diazomethane)/GC/ECD6251 B
Ion Chromatography Electrospray Ionization Tandem Mass Spectrometry (IC-ESI-MS/MS)557 14
BromateTwo-Dimensional Ion Chromatography (IC)302.0 18
Ion Chromatography Electrospray Ionization Tandem Mass Spectrometry (IC-ESI-MS/MS)557 14
Chemically Suppressed Ion ChromatographyD 6581-08 A
Electrolytically Suppressed Ion ChromatographyD 6581-08 B
ChloriteChemically Suppressed Ion ChromatographyD 6581-08 A
Electrolytically Suppressed Ion ChromatographyD 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)

ContaminantMethodologyEPA MethodASTM 4SM 21st edition 1SM Online 3
*         *         *         *         *         *         *
SulfateIon Chromatography4110 B
Gravimetric with ignition of residue4500-SO4−2 C4500-SO4−2 C-97
Gravimetric with drying of residue4500-SO4−2 D4500-SO4−2 D-97
Turbidimetric methodD 516-074500-SO4−2 E4500-SO4−2 E-97
Automated methylthymol blue method4500-SO4−2 F4500-SO4−2 F-97
*         *         *         *         *         *         *
End Supplemental Information

[FR Doc. Z9-27044 Filed 12-1-09; 8:45 am]

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