W. Va. Code R. § 45-21-44

Current through Register Vol. XLI, No. 50, December 13, 2024

Section 45-21-44 - Test Methods and Compliance Procedures: Emission Capture and Destruction or Removal Efficiency and Monitoring Requirements

44.1. Determining the efficiency of volatile organic compound (VOC) capture systems.

44.1.1. Definitions and abbreviations. -- For purposes of this section 44., the following definitions and abbreviations apply:

44.1.1.a. "Gas/gas method" means either of two methods for determining capture which rely only on gas phase measurements. One method requires construction of a temporary total enclosure (TTE) to assure all potential fugitive emissions are measured while the other method uses the room or building which houses the source as an enclosure.

44.1.1.b. "Hood" means a partial enclosure or canopy for capturing and exhausting, by means of a draft, the organic vapors or other fumes rising from a coating process or other source.

44.1.1.c. "Liquid/gas method" means either of two methods for determining capture which require both gas phase and liquid phase measurements and analysis. One liquid/gas method requires construction of a temporary total enclosure, the other uses the building or room which houses the facility as an enclosure.

44.1.1.d. "Process line" means any coating line, coating operation, or printing press.

44.1.1.e. "PTE" is a permanent total enclosure, which contains a process that emits VOC and meets the specifications given in Procedure T in Appendix A of this regulation.

44.1.1.f. "TTE" is a temporary total enclosure which is built around a process that emits VOC and meets the specifications given in Procedure T in Appendix A of this regulation.

44.1.1.g. "BE" is a building or room enclosure that contains a process that emits VOC. If a BE is to substitute for a PTE or TTE, the appropriate requirements given in Procedure T in Appendix A of this regulation shall be met.

44.1.2. Applicability.

44.1.2.a. The requirements of subdivision 44.1.3. shall apply to all regulated VOC emitting processes employing a control system except as provided below.

44.1.2.b. If a source owner or operator installs a PTE that meets EPA specifications, and which directs all VOC to a control device, the capture efficiency is assumed to be 100 percent, and the source is exempted from the requirements described in subdivision 44.1.3. Procedure T in Appendix A of this regulation shall be used to determine whether a structure is a PTE. This does not exempt a source from performance of any control device efficiency testing required under this regulation. In addition, a source shall demonstrate that all criteria for a PTE are met during the testing for capture efficiency.

44.1.2.c. If a source owner or operator uses a control device designed to collect and recover VOC (e.g. carbon adsorber), an explicit measurement of capture efficiency is not necessary if the conditions given below are met. The overall emission reduction efficiency of the control system can be determined each day by directly comparing the liquid VOC input to the process (L) to the recovered liquid VOC. The procedure for use in this situation is specified in 40 CFR 60.433 with the following modifications:

44.1.2.c.1. The source owner or operator shall be able to equate solvent usage with solvent recovery on a 24-hour (daily) basis, rather than a 30-day weighted average as given in 40 CFR 60.433. This shall be done within 72 hours following each 24-hour period; and

44.1.2.c.2. If the solvent recovery system controls multiple process lines, the source owner or operator shall be able to demonstrate that the overall control (i.e., the total recovered solvent VOC divided by the sum of liquid VOC input to all process lines venting to the control system) meets or exceeds the most stringent standard applicable for any process line venting to the control system.

44.1.3. Specific Requirements.

44.1.3.a. The capture efficiency shall be measured using one of the four protocols given in subparagraphs 44.1.3.c.1. through 44.1.3.c.4..

44.1.3.b. Any error margin associated with a test protocol shall not be incorporated into the results of a capture efficiency test.

44.1.3.c. Any source required to comply with this section 44. shall use one of the following protocols to measure capture efficiency, unless a suitable alternative protocol is approved by the Secretary and the U.S. EPA:

44.1.3.c.1. Gas/gas method using TTE. -- Procedure T in Appendix A of this regulation shall be used to determine whether a temporary enclosure is a TTE. The capture efficiency equation to be used for this protocol is:

CE = G/ (G + F)

Where:

CE = capture efficiency, decimal fraction

G = mass of VOC captured and delivered to control device using a TTE

F = mass of fugitive VOC that escapes from a TTE.

Procedure G.2 in Appendix A of this regulation is used to obtain G. Procedure F.1 in Appendix A of this regulation is used to obtain F.

44.1.3.c.2. Liquid/gas method using TTE. -- Procedure T in Appendix A of this regulation shall be used to determine whether a temporary enclosure is a TTE. The capture efficiency equation to be used for this protocol is:

CE = (L - F) / L

Where:

CE = capture efficiency, decimal fraction

L = mass of liquid VOC input to process

F = mass of fugitive VOC that escapes from a TTE.

Procedure L in Appendix A of this regulation is used to obtain L. Procedure F.1 in Appendix A of this regulation is used to obtain F.

44.1.3.c.3. Gas/gas method using the building or room (BE) in which the source is located as the enclosure and in which G and F are measured while operating only the source to be tested. -- All fans and blowers in the building or room shall be operated as they would under normal production. The capture efficiency equation to be used for this protocol is:

CE = G / (G + F_B)

Where:

CE = capture efficiency, decimal fraction

G = mass of VOC captured and delivered to a control device

F_B = mass of fugitive VOC that escapes from building enclosure.

Procedure G.2 in Appendix A of this regulation is used to obtain G. Procedure F.2 in Appendix A of this regulation is used to obtain F_B

44.1.3.c.4. Liquid/gas method using the building or room (BE) in which the source is located as the enclosure and in which L and F are measured while operating only the source to be tested. All fans and blowers in the building or room shall be operated as they would under normal production. The capture efficiency equation to be used for this protocol is:

CE = ((L - F_B)/ L

Where:

CE = capture efficiency, decimal fraction

L = mass of liquid VOC input to process

F_B = mass of fugitive VOC that escapes from building enclosure.

Procedure L in Appendix A of this regulation is used to obtain L. Procedure F.2 in Appendix A of this regulation is used to obtain F_B.

44.1.4. Recordkeeping and Reporting.

44.1.4.a. All sources complying with this section 44. shall maintain on file a copy of the capture efficiency protocol submitted to the Secretary. All results of appropriate test methods and CE protocols shall be reported to the Secretary within 60 days of the test date. A copy of the results shall be kept on file with the source.

44.1.4.b. If any changes are made to capture or control equipment, the source is required to notify the Secretary within 30 days of these changes and a new capture efficiency and/or control device destruction or removal efficiency test may be required.

44.2. Determining the destruction or removal efficiency of incinerators and carbon adsorbers.

44.2.1. Testing.

44.2.1.a. The control device destruction or removal efficiency shall be determined from data obtained by simultaneously measuring the inlet and outlet gas-phase VOC concentrations and gas volumetric flow rates in accordance with the gas-phase test methods specified in section 45. The control device destruction or removal efficiency shall be calculated using the following equation:

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Where:

E = VOC destruction efficiency of the control device;

Q_i = Volumetric flow rate of the effluent gas flowing through stack i entering the control device, dry standard cubic meters per hour (dscmh);

C_i = Concentration of VOC (as carbon) in the effluent gas flowing through stack i entering the control device, ppmv;

Q_j = Volumetric flow rate of the effluent gas flowing through stack j leaving the control device, dscmh;

C_j = Concentration of VOC (as carbon) in the effluent gas flowing through stack j leaving the control device, ppmv;

n = The number of vents to the control device; and

m = The number of vents after the control device.

44.2.1.b. A source utilizing a PTE (or a BE as a PTE) shall demonstrate that this enclosure meets the requirements given in Procedure T in Appendix A of this regulation for a PTE during any testing of a control device.

44.2.1.c. A source utilizing a TTE (or a BE as a TTE) shall demonstrate that this enclosure meets the requirements given in Procedure T in Appendix A of this regulation for a TTE during testing of a control device. The source shall also provide documentation that the quality assurance criteria for a TTE have been achieved.

44.2.2. Monitoring.

44.2.2.a. Any owner or operator who uses an incinerator or regenerative carbon adsorber to comply with any part of this regulation shall install, calibrate, certify to the Secretary, operate, and maintain monitoring equipment. The monitoring equipment shall monitor the following parameters:

44.2.2.a.1. Continuous monitoring of the combustion chamber temperature of each thermal incinerator or afterburner;

44.2.2.a.2. Continuous monitoring of the temperature immediately before and after each catalytic incinerator bed;

44.2.2.a.3. For each carbon adsorption bed the VOC concentration and flow shall be monitored before and after the carbon adsorption bed. The monitor shall be equipped with a continuous recording device. An alternative continuous monitoring program may be used if the monitoring program can be demonstrated to be equally as effective, as determined by the Secretary.

44.2.2.b. The continuous temperature monitoring equipment shall be equipped with a continuous recorder and have an accuracy of ±1 percent of the combustion temperature being measured expressed in degrees Celsius (°C) or -0.5°C, whichever is greater.

44.2.2.c. The owner or operator shall ensure that the quality assurance measures in subsection 47.10. are met.

44.3. Determining the overall emission reduction efficiency. -- The overall emission reduction efficiency of the emission control system shall be determined each day as the product of the capture efficiency and the control device destruction or removal efficiency; or for each solvent recovery system, by the liquid/liquid test protocol. The results of the capture efficiency test and control device destruction or removal efficiency test remain valid for each day until a subsequent test is performed. The results of any valid test may be used for each day until superseded by the results of a valid test subsequently performed.

W. Va. Code R. § 45-21-44