Section 326IAC8-20-7. Approved test methods

   Compliance with the emission specifications, vapor control system efficiency, and certain control requirements, inspection requirements, and exemption criteria of sections 4 through 6 of this rule and section 3(2) of this rule (relating to control requirements, alternate control requirements, inspection and monitoring requirements, and exemptions) shall be determined by applying one (1) or more of the following test methods and procedures, as appropriate:

(1) Gas flow rate. U.S. EPA 40 CFR 60 Methods 1, 2, 3, and 4* are used for determining gas flow rates, as necessary.

(2) Concentration of affected VOCs in a gas stream shall be determined as follows:

(A) U.S. EPA 40 CFR 60 Method 18* is used for determining gaseous organic compound emissions by gas chromatography.

(B) U.S. EPA 40 CFR 60 Method 25* is used for determining total gaseous nonmethane organic emissions as carbon.

(C) U.S. EPA 40 CFR 60 Method 25A or 25B* are used for determining total gaseous organic concentrations using flame ionization or nondispersive infrared analysis.

(3) Performance test for control devices are as follows:

(A) For flares, the performance test requirements of 40 CFR 60.18(b*) shall apply. Compliance with the requirements of 40 CFR 60.18(b)* will be considered to represent ninety-eight percent (98%) control of the VOC in the flare inlet.

(B) For control devices other than flares, the VOC control efficiency shall be determined in accordance with 326 IAC 8-1-4 where the flow rate and VOC concentration of the inlet and outlet gas streams of the control device are measured as specified under subdivisions (1) and (2).

(4) Vapor pressure shall be determined using standard reference texts or as specified in 326 IAC 8-9-3(5).

(5) Use U.S. EPA 40 CFR 60 Method 21 for determining VOC leaks and for monitoring a carbon canister in accordance with section 4(e)(4) of this rule.

(6) Use one (1) of the following for determining VOC concentration of wastewater samples:

(A) SW-846 Method 5030B (purge and trap) followed by SW-846 Method 8015B with a DB-5 boiling point (or equivalent column), and flame ionization detector, with the detector calibrated with benzene as required by 40 CFR 261*.

(B) SW-846 Methods 3810, 5030B (followed by 8021B), 8260B, and 9060 as required by 40 CFR 261*.

(C) U.S. EPA 40 CFR 136 Methods 602, 624, 1624, 625, 1625*.

(D) U.S. EPA 40 CFR 63 Method 305*.

(E) U.S. EPA 40 CFR 60 Method 25D*.

In the event of any conflict, U.S. EPA 40 CFR 60 Method 25D* takes precedence.

(7) Flow rate measurements shall be taken at the same time as the concentration measurements.

(8) Minor modifications to these test methods may be used, if approved by U.S. EPA. The approval shall occur when the department is informed, in writing, that U.S. EPA has no objections to the minor modifications to the test methods.

(9) Test methods other than those specified in this section may be used if validated by U.S. EPA 40 CFR 63 Method 301*.

  *These documents are incorporated by reference. Copies may be obtained from the Government Printing Office, 732 North Capitol Street NW, Washington, D.C. 20401 or are available for review and copying at the Indiana Department of Environmental Management, Office of Air Quality, Indiana Government Center North, Tenth Floor, 100 North Senate Avenue, Indianapolis, Indiana 46204. (Air Pollution Control Division; 326 IAC 8-20-7; filed Nov 3, 2009, 3:32 p.m.: 20091202-IR-326090222FRA; errata filed Nov 19, 2009, 10:03 a.m.: 20091216-IR-326090222ACA)