Federal Register / Vol. 78, No. 44 / Wednesday, March 6, 2013 / Rules and Regulations 14457 

[FR Doc. 2013–05112 Filed 3–5–13; 8:45 am] 

BILLING CODE 6560–50–P 

ENVIRONMENTAL PROTECTION 

AGENCY 

40 CFR Parts 60 and 63 

[EPA–HQ–OAR–2008–0708, FRL–9756–4] 

RIN 2060–AQ58 

National Emission Standards for 

Hazardous Air Pollutants for 

Reciprocating Internal Combustion 

Engines; New Source Performance 

Standards for Stationary Internal 

Combustion Engines 

Correction 

In rule document 2013–01288, 

appearing on pages 6674–6724 in the 

issue of Wednesday, January 30, 2013, 

make the following corrections: 

§ 63.6655 [Corrected] 

■ 1. On page 6708, the heading in Table 

2c to Subpart ZZZZ of Part 63 is 

corrected read as follows: 

Table 2c to Subpart ZZZZ of Part 63. 

Requirements for Existing Compression 

Ignition Stationary RICE Located at a 

Major Source of HAP Emissions and 

Existing Spark Ignition Stationary RICE 

≤500 HP Located at a Major Source of 

HAP Emissions 

■ 2. On page 6708, in the first column 

of Table 2c to Subpart ZZZZ of Part 63, 

the entry reading ‘‘4. Non-Emergency, 

non-black start CI stationary RICE 

300>HP≤500.’’ is corrected to read ‘‘4. 

Non-Emergency, non-black start CI 

stationary RICE 300<HP≤500.’’ 

■ 3. On page 6709, the heading in Table 

2c to Subpart ZZZZ of Part 63 is 

corrected read as follows: 

Table 2c to Subpart ZZZZ of Part 63. 

Requirements for Existing Compression 

Ignition Stationary RICE Located at a 

Major Source of HAP Emissions and 

Existing Spark Ignition Stationary RICE 

≤500 HP Located at a Major Source of 

HAP Emissions—Continued 

[FR Doc. C1–2013–01288 Filed 3–5–13; 8:45 am] 

BILLING CODE 1505–01–D 

ENVIRONMENTAL PROTECTION 

AGENCY 

40 CFR Part 136 

[EPA–HQ–OW–2010–0192; FRL–9787–7] 

Guidelines Establishing Test 

Procedures for the Analysis of 

Pollutants Under the Clean Water Act; 

Analysis and Sampling Procedures; 

Notice 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Notice of final decision. 

SUMMARY: EPA discussed, but did not 

propose, a new method, ASTM D7575, 

for oil and grease in the 2010 proposed 

Methods Update Rule (MUR). Oil and 

grease is a method-defined parameter. 

That is, the nature and amount of 

material determined by the method is 

defined in terms of the method. EPA 

subsequently published a Notice of Data 

Availability (NODA) on this method 

that provided new data and requested 

comment on whether and how EPA 

should approve the method in Part 136 

as an alternative oil and grease method. 

This document provides EPA’s final 

decision on its reconsideration of this 

method. 

DATES: March 6, 2013. 

FOR FURTHER INFORMATION CONTACT: Jan 

Matuszko, Office of Science and 

Technology, Office of Water (4303–T), 

Environmental Protection Agency, 1200 

Pennsylvania Avenue NW.; Washington, 

DC 20460; telephone number: 202–566– 

1035; fax number: 202–566–1053; email 

address: matuszko.jan@epa.gov. 

SUPPLEMENTARY INFORMATION: 

I. Background 

A. CWA Analytical Methods and 

Limited Use Alternate Test Procedures 

(ATP) Program 

EPA establishes test procedures (also 

referred to as analytical methods) 

codified in 40 CFR Part 136 under its 

authority in section 304(h) of the CWA 

to promulgate guidelines establishing 

test procedures for the analysis of 

pollutants. EPA’s regulations provide 

that, when EPA has promulgated a test 

procedure for analysis of a specific 

pollutant in 40 CFR Part 136, an NPDES 

permittee must use an approved test 

procedure for the specific pollutant 

when measuring the pollutant for an 

application submitted to EPA or to a 

State with an approved NPDES program 

and for reports required to be submitted 

by dischargers under the NPDES 

program. See 40 CFR § 136.1(a). This 

approach simplifies the permitting 

process for hundreds of thousands of 

NPDES and indirect discharging 

permittees and permitting authorities. In 

the absence of an approved test 

procedure for a specific pollutant (or 

when an approved test procedure does 

not work in a specific matrix, e.g., 

because of a matrix interference), 

generally, a permit applicant may use 

any suitable method but must provide 

the permitting authority a description of 

the method for evaluation of its 

suitability. See 40 CFR 122.21(g)(7). 

However, 40 CFR Part 136 also 

recognizes that new technologies and 

approaches are constantly being 

developed, including methods for 

pollutants for which EPA already has an 

approved test procedure. As such, Part 

136.5 allows for use of an alternate 

method for a specific pollutant or 

parameter in a regulated CWA matrix 

that is different from the approved test 

procedure (i.e., limited use approval). 

Requests for such uses, along with 

supporting data, are made to the 

applicable Regional Alternate Test 

Procedure (ATP) Coordinator for 

consideration and approval. 

B. Oil and Grease 

Unlike many parameters, oil and 

grease is not a unique chemical entity, 

but is a mixture of chemical species that 

varies from source to source. Common 

substances that may contribute to oil 

and grease include petroleum based 

compounds such as fuels, motor oil, 

lubricating oil, soaps, waxes, and 

hydraulic oil and vegetable based 

compounds such as cooking oil and 

other fats. Oil and grease is defined by 

the method used to measure it (i.e., it is 

a method-defined analyte). The CWA 

defines oil and grease as a conventional 

parameter and hundreds of thousands of 

NPDES permits and indirect discharging 

permits contain oil and grease 

numerical limits. Currently, Part 136 

lists two analytical methodologies for 

the measurement of oil and grease in 

such discharge permits. Permittees have 

been using EPA Method 1664A to 

measure compliance with such 

discharge limits. Method 1664A is a 

liquid/liquid extraction (LLE), 

gravimetric procedure that employs 

normal hexane (n-hexane) as the 

extraction solvent that is applicable for 

measuring oil and grease in 

concentrations from 5 mg/L to 1,000 

mg/L. This method also allows the use 

of solid-phase extraction (SPE) provided 

that the results obtained by SPE are 

equivalent to the results obtained by 

LLE. 

C. Method-Defined Analytes 

The measurement results obtained for 

a method-defined analyte are both 


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