---
kind: "range"
citation: "40 C.F.R. §§ 63.1215–63.1221"
title: "40"
from: "63.1215"
to: "63.1221"
count: 7
url: "https://uscodex.org/cfr/40/63.1215..63.1221"
---

# §63.1215. What are the health-based compliance alternatives for total chlorine?

- (a) **General—**
  - (1) **Overview.** You may establish and comply with health-based compliance alternatives for total chlorine under the procedures prescribed in this section for your hazardous waste combustors other than hydrochloric acid production furnaces. You may comply with these health-based compliance alternatives in lieu of the emission standards for total chlorine provided under §§ [63.1216](/cfr/40/63.1216.md), [63.1217](/cfr/40/63.1217.md), and [63.1219 through 63.1221](/cfr/40/63.1219..63.1221.md). To identify and comply with the limits, you must:
    - (i) Identify a total chlorine emission concentration (ppmv) expressed as chloride (Cl−) equivalent for each on site hazardous waste combustor. You may select total chlorine emission concentrations as you choose to demonstrate eligibility for the risk-based limits under this section, except as provided by [paragraph (b)(7)](#b-7) of this section;
    - (ii) Apportion the total chlorine emission concentration between HCl and Cl2 according to paragraph (b)(6)(i) of this section, and calculate HCl and Cl2 emission rates (lb/hr) using the gas flowrate and other parameters from the most recent regulatory compliance test.
    - (iii) Calculate the annual average HCl-equivalent emission rate as prescribed in [paragraph (b)(2)](#b-2) of this section.
    - (iv) Perform an eligibility demonstration to determine if your HCl-equivalent emission rate meets the national exposure standard and thus is below the annual average HCl-equivalent emission rate limit, as prescribed by [paragraph (c)](#c) of this section;
    - (v) Submit your eligibility demonstration for review and approval, as prescribed by [paragraph (e)](#e) of this section, which must include information to ensure that the 1-hour average HCl-equivalent emission rate limit is not exceeded, as prescribed by [paragraph (d)](#d) of this section;
    - (vi) Demonstrate compliance with the annual average HCl-equivalent emission rate limit during the comprehensive performance test, as prescribed by the testing and monitoring requirements under [paragraph (e)](#e) of this section;
    - (vii) Comply with compliance monitoring requirements, including establishing feedrate limits on total chlorine and chloride, and operating parameter limits on emission control equipment, as prescribed by [paragraph (f)](#f) of this section; and
    - (viii) **Comply with the requirements for changes, as prescribed by paragraph (h) of this section.**
  - (2) **Definitions.** In addition to the definitions under [§ 63.1201](/cfr/40/63.1201.md), the following definitions apply to this section:

    1-Hour Average HCl-Equivalent Emission Rate means the HCl-equivalent emission rate (lb/hr) determined by equating the toxicity of chlorine to HCl using aRELs as the health risk metric for acute exposure.

    1-Hour Average HCl-Equivalent Emission Rate Limit means the HCl-equivalent emission rate (lb/hr) determined by equating the toxicity of chlorine to HCl using aRELs as the health risk metric for acute exposure and which ensures that maximum 1-hour average ambient concentrations of HCl-equivalents do not exceed a Hazard Index of 1.0, rounded to the nearest tenths decimal place (0.1), at an off-site receptor location.

    Acute Reference Exposure Level (aREL) means health thresholds below which there would be no adverse health effects for greater than once in a lifetime exposures of one hour. ARELs are developed by the California Office of Health Hazard Assessment and are available at https://oehha.ca.gov/air//oehha-acute-8-hour-and-chronic-reference-exposure-level-rel-summary.

    Annual Average HCl-Equivalent Emission Rate means the HCl-equivalent emission rate (lb/hr) determined by equating the toxicity of chlorine to HCl using RfCs as the health risk metric for long-term exposure.

    Annual Average HCl-Equivalent Emission Rate Limit means the HCl-equivalent emission rate (lb/hr) determined by equating the toxicity of chlorine to HCl using RfCs as the health risk metric for long-term exposure and which ensures that maximum annual average ambient concentrations of HCl equivalents do not exceed a Hazard Index of 1.0, rounded to the nearest tenths decimal place (0.1), at an off-site receptor location.

    Hazard Index (HI) means the sum of more than one Hazard Quotient for multiple substances and/or multiple exposure pathways. In this section, the Hazard Index is the sum of the Hazard Quotients for HCl and chlorine.

    Hazard Quotient (HQ) means the ratio of the predicted media concentration of a pollutant to the media concentration at which no adverse effects are expected. For chronic inhalation exposures, the HQ is calculated under this section as the air concentration divided by the RfC. For acute inhalation exposures, the HQ is calculated under this section as the air concentration divided by the aREL.

    Look-up table analysis means a risk screening analysis based on comparing the HCl-equivalent emission rate from the affected source to the appropriate HCl-equivalent emission rate limit specified in tables 1 through 4 of this section.

    Reference Concentration (RfC) means an estimate (with uncertainty spanning perhaps an order of magnitude) of a continuous inhalation exposure to the human population (including sensitive subgroups) that is likely to be without an appreciable risk of deleterious effects during a lifetime. It can be derived from various types of human or animal data, with uncertainty factors generally applied to reflect limitations of the data used.

- (b) **HCl-equivalent emission rates.**
  - (1) You must express total chlorine emission rates for each hazardous waste combustor as HCl-equivalent emission rates.
  - (2) **Annual average rates.** You must calculate annual average toxicity-weighted HCl-equivalent emission rates for each combustor as follows:
  - (3) **1-hour average rates.** You must calculate 1-hour average toxicity-weighted HCl-equivalent emission rates for each combustor as follows:
  - (4) You must use the RfC values for hydrogen chloride and chlorine found at https://www.epa.gov/fera/dose-response-assessment-assessing-health-risks-associated-exposure-hazardous-air-pollutants.
  - (5) You must use the aREL values for hydrogen chloride and chlorine found at https://oehha.ca.gov/air/general-info/oehha-acute-8-hour-and-chronic-reference-exposure-level-rel-summary.
  - (6) **Cl—** 2HCl ratios—(i) Ratio for calculating annual average HCl-equivalent emission rates. (A) To calculate the annual average HCl-equivalent emission rate (lb/hr) for each combustor, you must apportion the total chlorine emission concentration (ppmv chloride (Cl−) equivalent) between HCl and chlorine according to the historical average Cl2/HCl volumetric ratio for all regulatory compliance tests.
    - (B) You must calculate HCl and Cl2 emission rates (lb/hr) using the apportioned emission concentrations and the gas flowrate and other parameters from the most recent regulatory compliance test.
    - (C) You must calculate the annual average HCl-equivalent emission rate using these HCl and Cl2 emission rates and the equation in [paragraph (b)(2)](#b-2) of this section.
    - (ii) **Ratio for calculating 1-hour average HCl-equivalent emission rates.**
      - (A) To calculate the 1-hour average HCl-equivalent emission rate for each combustor as a criterion for you to determine under [paragraph (d)](#d) of this section if an hourly rolling average feedrate limit on total chlorine and chloride may be waived, you must apportion the total chlorine emission concentration (ppmv chloride (Cl−) equivalent) between HCl and chlorine according to the historical highest Cl2/HCl volumetric ratio for all regulatory compliance tests.
      - (B) You must calculate HCl and Cl2 emission rates (lb/hr) using the apportioned emission concentrations and the gas flowrate and other parameters from the most recent regulatory compliance test.
      - (C) You must calculate the 1-hour average HCl-equivalent emission rate using these HCl and Cl2 emission rates and the equation in [paragraph (b)(3)](#b-3) of this section.
    - (iii) **Ratios for new sources.**
      - (A) You must use engineering information to estimate the Cl2/HCl volumetric ratio for a new source for the initial eligibility demonstration.
      - (B) You must use the Cl2/HCl volumetric ratio demonstrated during the initial comprehensive performance test to demonstrate in the Notification of Compliance that your HCl-equivalent emission rate does not exceed your HCl-equivalent emission rate limit.
      - (C) When approving the test plan for the initial comprehensive performance test, the permitting authority will establish a periodic testing requirement, such as every 3 months for 1 year, to establish a record of representative Cl2/HCl volumetric ratios.

        (1) You must revise your HCl-equivalent emission rates and HCl-equivalent emission rate limits after each such test using the procedures prescribed in paragraphs (b)(6)(i) and [(ii)](#b-6-ii) of this section.

        (2) If you no longer are eligible for the health-based compliance alternative, you must notify the permitting authority immediately and either:

        (i) Submit a revised eligibility demonstration requesting lower HCl-equivalent emission rate limits, establishing lower HCl-equivalent emission rates, and establishing by downward extrapolation lower feedrate limits for total chlorine and chloride; or

        (ii) Request a compliance schedule of up to three years to demonstrate compliance with the emission standards under §§ [63.1216](/cfr/40/63.1216.md), [63.1217](/cfr/40/63.1217.md), and [63.1219 through 63.1221](/cfr/40/63.1219..63.1221.md).

    - (iv) **Unrepresentative or inadequate historical Cl—** 2/HCl volumetric ratios. (A) If you believe that the Cl2/HCl volumetric ratio for one or more historical regulatory compliance tests is not representative of the current ratio, you may request that the permitting authority allow you to screen those ratios from the analysis of historical ratios.
      - (B) If the permitting authority believes that too few historical ratios are available to calculate a representative average ratio or establish a maximum ratio, the permitting authority may require you to conduct periodic testing to establish representative ratios.
    - (v) **Updating Cl—** 2/HCl ratios. You must include the Cl2/HCl volumetric ratio demonstrated during each performance test in your database of historical Cl2/HCl ratios to update the ratios you establish under paragraphs (b)(6)(i) and [(ii)](#b-6-ii) of this section for subsequent calculations of the annual average and 1-hour average HCl-equivalent emission rates.
  - (7) **Emission rates are capped.** The hydrogen chloride and chlorine emission rates you use to calculate the HCl-equivalent emission rate limit for incinerators, cement kilns, and lightweight aggregate kilns must not result in total chlorine emission concentrations exceeding:
    - (i) **For incinerators that were existing sources on April 19, 1996—** 77 parts per million by volume, combined emissions, expressed as chloride (Cl−) equivalent, dry basis and corrected to 7 percent oxygen;
    - (ii) **For incinerators that are new or reconstructed sources after April 19, 1996—** 21 parts per million by volume, combined emissions, expressed as chloride (Cl−) equivalent, dry basis and corrected to 7 percent oxygen;
    - (iii) **For cement kilns that were existing sources on April 19, 1996—** 130 parts per million by volume, combined emissions, expressed as chloride (Cl−) equivalent, dry basis and corrected to 7 percent oxygen;
    - (iv) **For cement kilns that are new or reconstructed sources after April 19, 1996—** 86 parts per million by volume, combined emissions, expressed as chloride (Cl−) equivalent, dry basis and corrected to 7 percent oxygen;
    - (v) **For lightweight aggregate kilns that were existing sources on April 19, 1996—** 600 parts per million by volume, combined emissions, expressed as chloride (Cl−) equivalent, dry basis and corrected to 7 percent oxygen;
    - (vi) **For lightweight aggregate kilns that are new or reconstructed sources after April 19, 1996—** 600 parts per million by volume, combined emissions, expressed as chloride (Cl−) equivalent, dry basis and corrected to 7 percent oxygen.
- (c) **Eligibility demonstration—**
  - (1) **General.**
    - (i) You must perform an eligibility demonstration to determine whether the total chlorine emission rates you select for each on-site hazardous waste combustor meet the national exposure standards using either a look-up table analysis prescribed by [paragraph (c)(3)](#c-3) of this section, or a site-specific compliance demonstration prescribed by [paragraph (c)(4)](#c-4) of this section.
    - (ii) You must also determine in your eligibility demonstration whether each combustor may exceed the 1-hour HCl-equivalent emission rate limit absent an hourly rolling average limit on the feedrate of total chlorine and chloride, as provided by [paragraph (d)](#d) of this section.
  - (2) **Definition of eligibility.**
    - (i) Eligibility for the risk-based total chlorine standard is determined by comparing the annual average HCl-equivalent emission rate for the total chlorine emission rate you select for each combustor to the annual average HCl-equivalent emission rate limit.
    - (ii) The annual average HCl-equivalent emission rate limit ensures that the Hazard Index for chronic exposure from HCl and chlorine emissions from all on-site hazardous waste combustors is less than or equal to 1.0, rounded to the nearest tenths decimal place (0.1), for the actual individual most exposed to the facility's emissions, considering off-site locations where people reside and where people congregate for work, school, or recreation.
    - (iii) **Your facility is eligible for the health-based compliance alternative for total chlorine if either—**
      - (A) The annual average HCl-equivalent emission rate for each on-site hazardous waste combustor is below the appropriate value in the look-up table determined under [paragraph (c)(3)](#c-3) of this section; or
      - (B) The annual average HCl-equivalent emission rate for each on-site hazardous waste combustor is below the annual average HCl-equivalent emission rate limit you calculate based on a site-specific compliance demonstration under [paragraph (c)(4)](#c-4) of this section.
  - (3) **Look-up table analysis.** Look-up tables for the eligibility demonstration are provided as tables 1 and 2 to this section.
    - (i) Table 1 presents annual average HCl-equivalent emission rate limits for sources located in flat terrain. For purposes of this analysis, flat terrain is terrain that rises to a level not exceeding one half the stack height within a distance of 50 stack heights.
    - (ii) Table 2 presents annual average HCl-equivalent emission rate limits for sources located in simple elevated terrain. For purposes of this analysis, simple elevated terrain is terrain that rises to a level exceeding one half the stack height, but that does not exceed the stack height, within a distance of 50 stack heights.
    - (iii) To determine the annual average HCl-equivalent emission rate limit for a source from the look-up table, you must use the stack height and stack diameter for your hazardous waste combustors and the distance between the stack and the property boundary.
    - (iv) If any of these values for stack height, stack diameter, and distance to nearest property boundary do not match the exact values in the look-up table, you must use the next lowest table value.
    - (v) **Adjusted HCl-equivalent emission rate limit for multiple on-site combustors—** . (A) If you have more than one hazardous waste combustor on site, the sum across all hazardous waste combustors of the ratio of the adjusted HCl-equivalent emission rate limit to the HCl-equivalent emission rate limit provided by tables 1 or 2 cannot exceed 1.0, according to the following equation:
      - (B) **The adjusted HCl-equivalent emission rate limit becomes the HCl-equivalent emission rate limit.**
  - (4) **Site-specific compliance demonstration—** . (i) You may use any scientifically-accepted peer-reviewed risk assessment methodology for your site-specific compliance demonstration to calculate an annual average HCl-equivalent emission rate limit for each on-site hazardous waste combustor. An example of one approach for performing the demonstration for air toxics can be found in the EPA's “Air Toxics Risk Assessment Reference Library, Volume 2, Site-Specific Risk Assessment Technical Resource Document,” which may be obtained through the EPA's Air Toxics website at https://www.epa.gov/sites/default/files/2013-08/documents/volume_2_facilityassess.pdf.
    - (ii) The annual average HCl-equivalent emission rate limit is the HCl-equivalent emission rate that ensures that the Hazard Index associated with maximum annual average exposures is not greater than 1.0 rounded to the nearest tenths decimal place (0.1).
    - (iii) To determine the annual average HCl-equivalent emission rate limit, your site-specific compliance demonstration must, at a minimum:
      - (A) Estimate long-term inhalation exposures through the estimation of annual or multi-year average ambient concentrations;
      - (B) Estimate the inhalation exposure for the actual individual most exposed to the facility's emissions from hazardous waste combustors, considering off-site locations where people reside and where people congregate for work, school, or recreation;
      - (C) Use site-specific, quality-assured data wherever possible;
      - (D) **Use health-protective default assumptions wherever site-specific data are not available, and—**
      - (E) Contain adequate documentation of the data and methods used for the assessment so that it is transparent and can be reproduced by an experienced risk assessor and emissions measurement expert.
    - (iv) **Your site-specific compliance demonstration need not—**
      - (A) Assume any attenuation of exposure concentrations due to the penetration of outdoor pollutants into indoor exposure areas;
      - (B) Assume any reaction or deposition of the emitted pollutants during transport from the emission point to the point of exposure
- (d) **Assurance that the 1-hour HCl-equivalent emission rate limit will not be exceeded.** To ensure that the 1-hour HCl-equivalent emission rate limit will not be exceeded when complying with the annual average HCl-equivalent emission rate limit, you must establish a 1-hour average HCl-equivalent emission rate for each combustor, establish a 1-hour average HCl-equivalent emission rate limit for each combustor, and consider site-specific factors including prescribed criteria to determine if the 1-hour average HCl-equivalent emission rate limit may be exceeded absent an hourly rolling average limit on the feedrate of total chlorine and chloride. If the 1-hour average HCl-equivalent emission rate limit may be exceeded, you must establish an hourly rolling average feedrate limit on total chlorine as provided by [paragraph (f)(3)](#f-3) of this section.
  - (1) **1-hour average HCl-equivalent emission rate.** You must calculate the 1-hour average HCl-equivalent emission rate from the total chlorine emission concentration you select for each source as prescribed in [paragraph (b)(6)(ii)(C)](#b-6-ii-C) of this section.
  - (2) **1-hour average HCl-equivalent emission rate limit.** You must establish the 1-hour average HCl-equivalent emission rate limit for each affected source using either a look-up table analysis or site-specific analysis:
    - (i) **Look-up table analysis.** Look-up tables are provided for 1-hour average HCl-equivalent emission rate limits as tables 3 and 4 to this section. Table 3 provides limits for facilities located in flat terrain. Table 4 provides limits for facilities located in simple elevated terrain. You must use the tables to establish 1-hour average HCl-equivalent emission rate limits as prescribed in [paragraphs (c)(3)(iii) through (v)](#c-3-iii..c-3-v) of this section for annual average HCl-equivalent emission rate limits.
    - (ii) **Site-specific analysis.** The 1-hour average HCl-equivalent emission rate limit is the HCl-equivalent emission rate that ensures that the Hazard Index associated with maximum 1-hour average exposures is not greater than 1.0 rounded to the nearest tenths decimal place (0.1). You must follow the risk assessment procedures under [paragraph (c)(4)](#c-4) of this section to estimate short-term inhalation exposures through the estimation of maximum 1-hour average ambient concentrations.
  - (3) **Criteria for determining whether the 1-hour HCl-equivalent emission rate may be exceeded absent an hourly rolling average limit on the feedrate of total chlorine and chloride.** An hourly rolling average feedrate limit on total chlorine and chloride is waived if you determine considering the criteria listed below that the long-term feedrate limit (and averaging period) established under paragraph (c)(4)(i) of this section will also ensure that the 1-hour average HCl-equivalent emission rate will not exceed the 1-hour average HCl-equivalent emission rate limit you calculate for each combustor.
    - (i) The ratio of the 1-hour average HCl-equivalent emission rate based on the total chlorine emission rate you select for each hazardous waste combustor to the 1-hour average HCl-equivalent emission rate limit for the combustor; and
    - (ii) The potential for the source to vary total chlorine and chloride feedrates substantially over the averaging period for the feedrate limit established under paragraph (c)(4)(i) of this section.
- (e) **Review and approval of eligibility demonstrations—**
  - (1) **Content of the eligibility demonstration—**
    - (i) **General.** The eligibility demonstration must include the following information, at a minimum:
      - (A) Identification of each hazardous waste combustor combustion gas emission point (e.g., generally, the flue gas stack);
      - (B) The maximum and average capacity at which each combustor will operate, and the maximum rated capacity for each combustor, using the metric of stack gas volume (under both actual and standard conditions) emitted per unit of time, as well as any other metric that is appropriate for the combustor (e.g., million Btu/hr heat input for boilers; tons of dry raw material feed/hour for cement kilns);
      - (C) Stack parameters for each combustor, including, but not limited to stack height, stack diameter, stack gas temperature, and stack gas exit velocity;
      - (D) Plot plan showing all stack emission points, nearby residences and property boundary line;
      - (E) Identification of any stack gas control devices used to reduce emissions from each combustor;
      - (F) Identification of the RfC values used to calculate annual average HCl-equivalent emission rates and the aREL values used to calculate 1-hour average HCl-equivalent emission rates;
      - (G) Calculations used to determine the annual average and 1-hour average HCl-equivalent emission rates and rate limits, including calculation of the Cl2/HCl ratios as prescribed by [paragraph (b)(6)](#b-6) of this section;
    - (ii) **Additional content to implement the annual average HCl-equivalent emission rate limit.** You must include the following in your eligibility demonstration to implement the annual average HCl-equivalent emission rate limit:
      - (A) For incinerators, cement kilns, and lightweight aggregate kilns, calculations to confirm that the annual average HCl-equivalent emission rate that you calculate from the total chlorine emission rate you select for each combustor does not exceed the limits provided by [paragraph (b)(7)](#b-7) of this section;
      - (B) Comparison of the annual average HCl-equivalent emission rate limit for each combustor to the annual average HCl-equivalent emission rate for the total chlorine emission rate you select for each combustor;
      - (C) The annual average HCl-equivalent emission rate limit for each hazardous waste combustor, and the limits on operating parameters required under [paragraph (g)(1)](#g-1) of this section;
      - (D) Determination of the long-term chlorine feedrate limit, including the total chlorine system removal efficiency for sources that establish an (up to) annual rolling average feedrate limit under [paragraph (g)(2)(ii)](#g-2-ii) of this section;
    - (iii) **Additional content to implement the 1-hour average HCl-equivalent emission rate limit.** You must include the following in your eligibility demonstration to implement the 1-hour average HCl-equivalent emission rate limit:
      - (A) Determination of whether the combustor may exceed the 1-hour HCl-equivalent emission rate limit absent an hourly rolling average chlorine feedrate limit, including:

        (1) Determination of the 1-hour average HCl-equivalent emission rate from the total chlorine emission rate you select for the combustor;

        (2) Determination of the 1-hour average HCl-equivalent emission rate limit using either look-up tables 3 and 4 to this section or site-specific risk analysis;

        (3) Determination of the ratio of the 1-hour average HCl-equivalent emission rate to the 1-hour average HCl-equivalent emission rate limit for the combustor; and

        (4) The potential for the source to vary total chlorine and chloride feedrates substantially over the averaging period for the long-term feedrate limit established under paragraphs [(g)(2)(i)](#g-2-i) and [(ii)](#g-2-ii) of this section; and

      - (B) Determination of the hourly rolling average chlorine feedrate limit, including the total chlorine system removal efficiency.
    - (iv) **Additional content of a look-up table demonstration.** If you use the look-up table analysis to establish HCl-equivalent emission rate limits, your eligibility demonstration must also contain, at a minimum, the following:
      - (A) Documentation that the facility is located in either flat or simple elevated terrain; and
      - (B) For facilities with more than one on-site hazardous waste combustor, documentation that the sum of the ratios for all such combustors of the HCl-equivalent emission rate to the HCl-equivalent emission rate limit does not exceed 1.0.
    - (v) **Additional content of a site-specific compliance demonstration.** If you use a site-specific compliance demonstration, your eligibility demonstration must also contain, at a minimum, the following information to support your determination of the annual average HCl-equivalent emission rate limit for each combustor:
      - (A) Identification of the risk assessment methodology used;
      - (B) Documentation of the fate and transport model used;
      - (C) Documentation of the fate and transport model inputs, including the stack parameters listed in paragraph (d)(1)(i)(C) of this section converted to the dimensions required for the model;
      - (D) **As applicable—** (1) Meteorological data;

        (2) Building, land use, and terrain data;

        (3) Receptor locations and population data, including areas where people congregate for work, school, or recreation; and

        (4) Other facility-specific parameters input into the model;

      - (E) Documentation of the fate and transport model outputs; and
      - (F) **Documentation of any exposure assessment and risk characterization calculations.**
  - (2) **Review and approval—**
    - (i) **Existing sources.**
      - (A) If you operate an existing source, you must submit the eligibility demonstration to your permitting authority for review and approval not later than 12 months prior to the compliance date. Before August 3, 2026, you must also submit a separate copy of the eligibility demonstration to: U.S. EPA, Risk and Exposure Assessment Group, Emission Standards Division (C404-01), Attn: Group Leader, Research Triangle Park, North Carolina 27711, electronic mail address REAG@epa.gov. Beginning August 3, 2026, you must also submit a separate copy as a portable document format (PDF) upload according to [§ 63.1211(g)](/cfr/40/63.1211.md?p=g) and no electronic mail submission is required.
      - (B) Your permitting authority should notify you of approval or intent to disapprove your eligibility demonstration within 6 months after receipt of the original demonstration, and within 3 months after receipt of any supplemental information that you submit. A notice of intent to disapprove your eligibility demonstration, whether before or after the compliance date, will identify incomplete or inaccurate information or noncompliance with prescribed procedures and specify how much time you will have to submit additional information or to achieve the MACT standards for total chlorine under §§ [63.1216](/cfr/40/63.1216.md), [63.1217](/cfr/40/63.1217.md), and [63.1219 through 63.1221](/cfr/40/63.1219..63.1221.md). If your eligibility demonstration is disapproved, the permitting authority may extend the compliance date of the total chlorine standards up to one year to allow you to make changes to the design or operation of the combustor or related systems as quickly as practicable to enable you to achieve compliance with the MACT total chlorine standards.
      - (C) If your permitting authority has not approved your eligibility demonstration by the compliance date, and has not issued a notice of intent to disapprove your demonstration, you may begin complying, on the compliance date, with the HCl-equivalent emission rate limits you present in your eligibility demonstration provided that you have made a good faith effort to provide complete and accurate information and to respond to any requests for additional information in a timely manner. If the permitting authority believes that you have not made a good faith effort to provide complete and accurate information or to respond to any requests for additional information, however, the authority may notify you in writing by the compliance date that you have not met the conditions for complying with the health-based compliance alternative without prior approval. Such notice will explain the basis for concluding that you have not made a good faith effort to comply with the health-based compliance alternative by the compliance date.
      - (D) If your permitting authority issues a notice of intent to disapprove your eligibility demonstration after the compliance date, the authority will identify the basis for that notice and specify how much time you will have to submit additional information or to comply with the MACT standards for total chlorine under §§ [63.1216](/cfr/40/63.1216.md), [63.1217](/cfr/40/63.1217.md), and [63.1219 through 63.1221](/cfr/40/63.1219..63.1221.md). The permitting authority may extend the compliance date of the total chlorine standards up to one-year to allow you to make changes to the design or operation of the combustor or related systems as quickly as practicable to enable you to achieve compliance with the MACT standards for total chlorine.
    - (ii) **New or reconstructed sources—**
      - (A) **General—** . The procedures for review and approval of eligibility demonstrations applicable to existing sources under [paragraph (e)(2)(i)](#e-2-i) of this section also apply to new or reconstructed sources, except that the date you must submit the eligibility demonstration is as prescribed in this [paragraph (e)(2)(ii)](#e-2-ii).
      - (B) If you operate a new or reconstructed source that starts up before April 12, 2007, or a solid fuel boiler or liquid fuel boiler that is an area source that increases its emissions or its potential to emit such that it becomes a major source of HAP before April 12, 2007, you must either:

        (1) Comply with the final total chlorine emission standards under §§ [63.1216](/cfr/40/63.1216.md), [63.1217](/cfr/40/63.1217.md), and [63.1219 through 63.1221](/cfr/40/63.1219..63.1221.md), by October 12, 2005, or upon startup, whichever is later, except for a standard that is more stringent than the standard proposed on April 20, 2004 for your source. If a final standard is more stringent than the proposed standard, you may comply with the proposed standard until October 14, 2008, after which you must comply with the final standard; or

        (2) Submit an eligibility demonstration for review and approval under this section by April 12, 2006, and comply with the HCl-equivalent emission rate limits and operating requirements you establish in the eligibility demonstration.

      - (C) If you operate a new or reconstructed source that starts up on or after April 12, 2007, or a solid fuel boiler or liquid fuel boiler that is an area source that increases its emissions or its potential to emit such that it becomes a major source of HAP on or after April 12, 2007, you must either:

        (1) Comply with the final total chlorine emission standards under §§ [63.1216](/cfr/40/63.1216.md), [63.1217](/cfr/40/63.1217.md), and [63.1219 through 63.1221](/cfr/40/63.1219..63.1221.md) upon startup. If the final standard is more stringent than the standard proposed for your source on April 20, 2004, however, and if you start operations before October 14, 2008, you may comply with the proposed standard until October 14, 2008, after which you must comply with the final standard; or

        (2) Submit an eligibility demonstration for review and approval under this [section 12](/cfr/40/12.md) months prior to startup.

  - (3) The operating requirements in the eligibility demonstration are applicable requirements for purposes of parts [70](/cfr/40/part70.md) and [71](/cfr/40/part71.md) of this chapter and will be incorporated in the title V or other air permit.
- (f) **Testing requirements—**
  - (1) **General.** You must comply with the requirements for comprehensive performance testing under [§ 63.1207](/cfr/40/63.1207.md).
  - (2) **System removal efficiency.**
    - (i) You must calculate the total chlorine removal efficiency of the combustor during each run of the comprehensive performance test.
    - (ii) You must calculate the average system removal efficiency as the average of the test run averages.
    - (iii) If your source does not control emissions of total chlorine, you must assume zero system removal efficiency.
  - (3) **Annual average HCl-equivalent emission rate limit.** If emissions during the comprehensive performance test exceed the annual average HCl-equivalent emission rate limit, eligibility for emission limits under this section is not affected. This emission rate limit is an annual average limit even though compliance is based on a 12-hour or (up to) an annual rolling average feedrate limit on total chlorine and chloride because the feedrate limit is also used for compliance assurance for the semivolatile metal emission standard
  - (4) **1-hour average HCl-equivalent emission rate limit.** Total chlorine emissions during each run of the comprehensive performance test cannot exceed the 1-hour average HCl-equivalent emission rate limit.
  - (5) **Test methods.**
    - (i) If you operate a cement kiln or a combustor equipped with a dry acid gas scrubber, you must use EPA Method 320 or 321 of appendix A to this part, or an equivalent method, to measure hydrogen chloride, and the back-half (caustic impingers) of EPA Method 26 or 26A of appendix A-8 to [part 60](/cfr/40/part60.md) of this chapter, or an equivalent method, to measure chlorine gas.
    - (ii) **Bromine and sulfur considerations.** If you operate an incinerator, boiler, or lightweight aggregate kiln and your feedstreams contain bromine or sulfur during the comprehensive performance test at levels specified under [paragraph (e)(2)(ii)(B)](#e-2-ii-B) of this section, you must use EPA Method 320 or 321 of appendix A to this part, or an equivalent method, to measure hydrogen chloride, and EPA Method 26 or 26A of appendix A-8 to [part 60](/cfr/40/part60.md) of this chapter, or an equivalent method, to measure chlorine and hydrogen chloride, and determine your chlorine emissions as follows:
      - (A) You must determine your chlorine emissions to be the higher of the value measured by EPA Method 26 or 26A of appendix A-8 to [part 60](/cfr/40/part60.md) of this chapter, or an equivalent method, or the value calculated by the difference between the combined hydrogen chloride and chlorine levels measured by EPA Method 26 or 26A of appendix A-8 to [part 60](/cfr/40/part60.md) of this chapter, or an equivalent method, and the hydrogen chloride measurement from EPA Method 320 or 321 of appendix A to this part, or an equivalent method.
      - (B) The procedures under [paragraph (f)(2)(ii)](#f-2-ii) of this section for determining hydrogen chloride and chlorine emissions apply if you feed bromine or sulfur during the performance test at the levels specified in this [paragraph (f)(5)(ii)(B)](#f-5-ii-B):

        (1) If the bromine/chlorine ratio in feedstreams is greater than 5 percent by mass; or

        (2) If the sulfur/chlorine ratio in feedstreams is greater than 50 percent by mass.

- (g) **Monitoring requirements—**
  - (1) **General.** You must establish and comply with limits on the same operating parameters that apply to sources complying with the MACT standard for total chlorine under [§ 63.1209(o)](/cfr/40/63.1209.md?p=o), except that feedrate limits on total chlorine and chloride must be established according to paragraphs [(g)(2)](#g-2) and [(g)(3)](#g-3) of this section:
  - (2) **Feedrate limit to ensure compliance with the annual average HCl-equivalent emission rate limit.**
    - (i) For sources subject to the feedrate limit for total chlorine and chloride under [§ 63.1209(n)(4)](/cfr/40/63.1209.md?p=n-4) to ensure compliance with the semivolatile metals standard:
      - (A) The feedrate limit (and averaging period) for total chlorine and chloride to ensure compliance with the annual average HCl-equivalent emission rate limit is the same as required by [§ 63.1209(n)(4)](/cfr/40/63.1209.md?p=n-4), except as provided by [paragraph (g)(2)(i)(B)](#g-2-i-B) of this section.
      - (B) The numerical value of the total chlorine and chloride feedrate limit (i.e., not considering the averaging period) you establish under [§ 63.1209(n)(4)](/cfr/40/63.1209.md?p=n-4) must not exceed the value you calculate as the annual average HCl-equivalent emission rate limit (lb/hr) divided by [1 − system removal efficiency], where the system removal efficiency is calculated as prescribed by [paragraph (f)(2)](#f-2) of this section.
    - (ii) For sources exempt from the feedrate limit for total chlorine and chloride under [§ 63.1209(n)(4)](/cfr/40/63.1209.md?p=n-4) because they comply with [§ 63.1207(m)(2)](/cfr/40/63.1207.md?p=m-2), the feedrate limit for total chlorine and chloride to ensure compliance with the annual average HCl-equivalent emission rate must be established as follows:
      - (A) You must establish an average period for the feedrate limit that does not exceed an annual rolling average;
      - (B) The numerical value of the total chlorine and chloride feedrate limit (i.e., not considering the averaging period) must not exceed the value you calculate as the annual average HCl-equivalent emission rate limit (lb/hr) divided by [1 − system removal efficiency], where the system removal efficiency is calculated as prescribed by [paragraph (f)(2)](#f-2) of this section.
      - (C) You must calculate the initial rolling average as though you had selected a 12-hour rolling average, as provided by paragraph (b)(5)(i) of this section. You must calculate rolling averages thereafter as the average of the available one-minute values until enough one-minute values are available to calculate the rolling average period you select. At that time and thereafter, you update the rolling average feedrate each hour with a 60-minute average feedrate.
  - (3) **Feedrate limit to ensure compliance with the 1-hour average HCl-equivalent emission rate limit.**
    - (i) You must establish an hourly rolling average feedrate limit on total chlorine and chloride to ensure compliance with the 1-hour average HCl-equivalent emission rate limit unless you determine that the hourly rolling average feedrate limit is waived under [paragraph (d)](#d) of this section.
    - (ii) You must calculate the hourly rolling average feedrate limit for total chlorine and chloride as the 1-hour average HCl-equivalent emission rate limit (lb/hr) divided by [1 − system removal efficiency], where the system removal efficiency is calculated as prescribed by [paragraph (f)(2)(ii)](#f-2-ii) of this section.
- (h) **Changes—**
  - (1) **Changes over which you have control—**
    - (i) **Changes that would affect the HCl-equivalent emission rate limit.**
      - (A) If you plan to change the design, operation, or maintenance of the facility in a manner than would decrease the annual average or 1-hour average HCl-equivalent emission rate limit, you must submit to the permitting authority prior to the change a revised eligibility demonstration documenting the lower emission rate limits and calculations of reduced total chlorine and chloride feedrate limits.
      - (B) If you plan to change the design, operation, or maintenance of the facility in a manner than would increase the annual average or 1-hour average HCl-equivalent emission rate limit, and you elect to increase your total chlorine and chloride feedrate limits. You must also submit to the permitting authority prior to the change a revised eligibility demonstration documenting the increased emission rate limits and calculations of the increased feedrate limits prior to the change.
    - (ii) **Changes that could affect system removal efficiency.**
      - (A) If you plan to change the design, operation, or maintenance of the combustor in a manner than could decrease the system removal efficiency, you are subject to the requirements of [§ 63.1206(b)(5)](/cfr/40/63.1206.md?p=b-5) for conducting a performance test to reestablish the combustor's system removal efficiency and you must submit a revised eligibility demonstration documenting the lower system removal efficiency and the reduced feedrate limits on total chlorine and chloride.
      - (B) If you plan to change the design, operation, or maintenance of the combustor in a manner than could increase the system removal efficiency, and you elect to document the increased system removal efficiency to establish higher feedrate limits on total chlorine and chloride, you are subject to the requirements of [§ 63.1206(b)(5)](/cfr/40/63.1206.md?p=b-5) for conducting a performance test to reestablish the combustor's system removal efficiency. You must also submit to the permitting authority a revised eligibility demonstration documenting the higher system removal efficiency and the increased feedrate limits on total chlorine and chloride.
  - (2) **Changes over which you do not have control that may decrease the HCl-equivalent emission rate limits.** These requirements apply if you use a site-specific risk assessment under [paragraph (c)(4)](#c-4) of this section to demonstrate eligibility for the health-based limits.
    - (i) **Proactive review.** You must submit for review and approval with each comprehensive performance test plan either a certification that the information used in your eligibility demonstration has not changed in a manner that would decrease the annual average or 1-hour average HCl-equivalent emission rate limit, or a revised eligibility demonstration.
    - (ii) **Reactive review.** If in the interim between your comprehensive performance tests you have reason to know of changes that would decrease the annual average or 1-hour average HCl-equivalent emission rate limit, you must submit a revised eligibility demonstration as soon as practicable but not more frequently than annually.
    - (iii) **Compliance schedule.** If you determine that you cannot demonstrate compliance with a lower annual average HCl-equivalent emission rate limit during the comprehensive performance test because you need additional time to complete changes to the design or operation of the source, you may request that the permitting authority grant you additional time to make those changes as quickly as practicable.

# §63.1216. What are the standards for solid fuel boilers that burn hazardous waste?

- (a) **Emission limits for existing sources.** You must not discharge or cause combustion gases to be emitted into the atmosphere that contain:
  - (1) For dioxins and furans, either carbon monoxide or hydrocarbon emissions in excess of the limits provided by [paragraph (a)(5)](#a-5) of this section;
  - (2) Mercury in excess of 11 µg/dscm corrected to 7 percent oxygen;
  - (3) For cadmium and lead combined, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), emissions in excess of 180 µg/dscm, corrected to 7 percent oxygen;
  - (4) For arsenic, beryllium, and chromium combined, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), emissions in excess of 380 µg/dscm, corrected to 7 percent oxygen;
  - (5) **For carbon monoxide and hydrocarbons, either—**
    - (i) Carbon monoxide in excess of 100 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis and corrected to 7 percent oxygen. If you elect to comply with this carbon monoxide standard rather than the hydrocarbon standard under [paragraph (a)(5)(ii)](#a-5-ii) of this section, you must also document that, during the destruction and removal efficiency (DRE) test runs or their equivalent as provided by [§ 63.1206(b)(7)](/cfr/40/63.1206.md?p=b-7), hydrocarbons do not exceed 10 parts per million by volume during those runs, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane; or
    - (ii) Hydrocarbons in excess of 10 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane;
  - (6) For hydrogen chloride and chlorine combined, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), emissions in excess of 440 parts per million by volume, expressed as a chloride (Cl−) equivalent, dry basis and corrected to 7 percent oxygen;
  - (7) For particulate matter, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md) or as provided by [paragraph (e)](#e) of this section, emissions in excess of 68 mg/dscm corrected to 7 percent oxygen;
  - (8) For hydrogen fluoride, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), emissions in excess of 6.2 parts per million by volume, dry basis and corrected to 7 percent oxygen; and
  - (9) For hydrogen cyanide, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), emissions in excess of 5.0 parts per million by volume, dry basis and corrected to 7 percent oxygen.
- (b) **Emission limits for new sources.** You must not discharge or cause combustion gases to be emitted into the atmosphere that contain:
  - (1) For dioxins and furans, either carbon monoxide or hydrocarbon emissions in excess of the limits provided by [paragraph (b)(5)](#b-5) of this section;
  - (2) Mercury in excess of 11 µg/dscm corrected to 7 percent oxygen;
  - (3) For cadmium and lead combined, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), emissions in excess of 180 µg/dscm, corrected to 7 percent oxygen;
  - (4) For arsenic, beryllium, and chromium combined, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), emissions in excess of 190 µg/dscm, corrected to 7 percent oxygen;
  - (5) **For carbon monoxide and hydrocarbons, either—**
    - (i) Carbon monoxide in excess of 100 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis and corrected to 7 percent oxygen. If you elect to comply with this carbon monoxide standard rather than the hydrocarbon standard under [paragraph (b)(5)(ii)](#b-5-ii) of this section, you must also document that, during the destruction and removal efficiency (DRE) test runs or their equivalent as provided by [§ 63.1206(b)(7)](/cfr/40/63.1206.md?p=b-7), hydrocarbons do not exceed 10 parts per million by volume during those runs, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane; or
    - (ii) Hydrocarbons in excess of 10 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane;
  - (6) For hydrogen chloride and chlorine combined, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), emissions in excess of 73 parts per million by volume, expressed as a chloride (Cl−) equivalent, dry basis and corrected to 7 percent oxygen;
  - (7) For particulate matter, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md) or as provided by [paragraph (e)](#e) of this section, emissions in excess of 34 mg/dscm corrected to 7 percent oxygen;
  - (8) For hydrogen fluoride, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), emissions in excess of 6.2 parts per million by volume, dry basis and corrected to 7 percent oxygen; and
  - (9) For hydrogen cyanide, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), emissions in excess of 5.0 parts per million by volume, dry basis and corrected to 7 percent oxygen.
- (c) **Destruction and removal efficiency (DRE) standard—**
  - (1) 99.99% DRE. Except as provided in [paragraph (c)(2)](#c-2) of this section, you must achieve a DRE of 99.99% for each principle organic hazardous constituent (POHC) designated under [paragraph (c)(3)](#c-3) of this section. You must calculate DRE for each POHC from the following equation:

    DRE = [1 − (Wout ÷ Win)] × 100%

  - (2) **99.9999% DRE.** If you burn the dioxin-listed hazardous wastes F020, F021, F022, F023, F026, or F027 (see [§ 261.31](/cfr/40/261.31.md) of this chapter), you must achieve a DRE of 99.9999% for each POHC that you designate under [paragraph (c)(3)](#c-3) of this section. You must demonstrate this DRE performance on POHCs that are more difficult to incinerate than tetra-, penta-, and hexachlorodibenzo-p-dioxins and dibenzofurans. You must use the equation in [paragraph (c)(1)](#c-1) of this section to calculate DRE for each POHC. In addition, you must notify the Administrator of your intent to incinerate hazardous wastes F020, F021, F022, F023, F026, or F027.
  - (3) **Principal organic hazardous constituents (POHCs).**
    - (i) You must treat the POHCs in the waste feed that you specify under [paragraph (c)(3)(ii)](#c-3-ii) of this section to the extent required by paragraphs [(c)(1)](#c-1) and [(2)](#c-2) of this section.
    - (ii) You must specify one or more POHCs that are representative of the most difficult to destroy organic compounds in your hazardous waste feedstream. You must base this specification on the degree of difficulty of incineration of the organic constituents in the hazardous waste and on their concentration or mass in the hazardous waste feed, considering the results of hazardous waste analyses or other data and information.
- (d) **Significant figures.** The emission limits provided by paragraphs [(a)](#a) and [(b)](#b) of this section are presented with two significant figures. Although you must perform intermediate calculations using at least five significant figures, you may round the resultant emission levels to two significant figures to document compliance.
- (e) **Alternative to the particulate matter standard—**
  - (1) **General.** In lieu of complying with the particulate matter standards of this section, you may elect to comply with the following alternative metal emission control requirement:
  - (2) **Alternative metal emission control requirements for existing solid fuel boilers.**
    - (i) You must not discharge or cause combustion gases to be emitted into the atmosphere that contain cadmium, lead, and selenium in excess of 180 µg/dscm, combined emissions, corrected to 7 percent oxygen; and,
    - (ii) You must not discharge or cause combustion gases to be emitted into the atmosphere that contain antimony, arsenic, beryllium, chromium, cobalt, manganese, and nickel in excess of 380 µg/dscm, combined emissions, corrected to 7 percent oxygen.
  - (3) **Alternative metal emission control requirements for new solid fuel boilers.**
    - (i) You must not discharge or cause combustion gases to be emitted into the atmosphere that contain cadmium, lead, and selenium in excess of 180 µg/dscm, combined emissions, corrected to 7 percent oxygen; and,
    - (ii) You must not discharge or cause combustion gases to be emitted into the atmosphere that contain antimony, arsenic, beryllium, chromium, cobalt, manganese, and nickel in excess of 190 µg/dscm, combined emissions, corrected to 7 percent oxygen.
  - (4) **Operating limits.** Semivolatile and low volatile metal operating parameter limits must be established to ensure compliance with the alternative emission limitations described in paragraphs [(e)(2)](#e-2) and [(3)](#e-3) of this section pursuant to [§ 63.1209(n)](/cfr/40/63.1209.md?p=n), except that semivolatile metal feedrate limits apply to lead, cadmium, and selenium, combined, and low volatile metal feedrate limits apply to arsenic, beryllium, chromium, antimony, cobalt, manganese, and nickel, combined.
- (f) **Elective standards for area sources.** Area sources as defined under [§ 63.2](/cfr/40/63.2.md) are subject to the standards for cadmium and lead, the standards for arsenic, beryllium, and chromium, the standards for hydrogen chloride and chlorine, and the standards for particulate matter under this section if they elect under [§ 266.100(b)(3)](/cfr/40/266.100.md?p=b-3) of this chapter to comply with those standards in lieu of the standards under [§§ 266.105 through 266.107](/cfr/40/266.105..266.107.md) of this chapter to control those pollutants.

# §63.1217. What are the standards for liquid fuel boilers that burn hazardous waste?

- (a) **Emission limits for existing sources.** You must not discharge or cause combustion gases to be emitted into the atmosphere that contain:
  - (1)
    - (i) Dioxins and furans in excess of 0.40 ng TEQ/dscm, corrected to 7 percent oxygen, for liquid fuel boilers equipped with a dry air pollution control system; or
    - (ii) Either carbon monoxide or hydrocarbon emissions in excess of the limits provided by [paragraph (a)(5)](#a-5) of this section for sources not equipped with a dry air pollution control system;
    - (iii) A source equipped with a wet air pollution control system followed by a dry air pollution control system is not considered to be a dry air pollution control system, and a source equipped with a dry air pollution control system followed by a wet air pollution control system is considered to be a dry air pollution control system for purposes of this emission limit;
  - (2) **For mercury, except as provided for in paragraph (a)(2)(iii) of this section—**
    - (i) When you burn hazardous waste with an as-fired heating value less than 10,000 Btu/lb, emissions in excess of 19 µg/dscm, corrected to 7 percent oxygen, on an (not-to-exceed) annual averaging period;
    - (ii) When you burn hazardous waste with an as-fired heating value 10,000 Btu/lb or greater, emissions in excess of 4.2 × 10−5 lbs mercury attributable to the hazardous waste per million Btu heat input from the hazardous waste on an (not-to-exceed) annual averaging period;
    - (iii) **The boiler operated by Diversified Scientific Services, Inc.** with EPA identification number TND982109142, and which burns radioactive waste mixed with hazardous waste, must comply with the mercury emission standard under [§ 63.1219(a)(2)](/cfr/40/63.1219.md?p=a-2);
  - (3) For cadmium and lead combined, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md),
    - (i) When you burn hazardous waste with an as-fired heating value less than 10,000 Btu/lb, emissions in excess of 150 µg/dscm, corrected to 7 percent oxygen, on an (not-to-exceed) annual averaging period;
    - (ii) When you burn hazardous waste with an as-fired heating value of 10,000 Btu/lb or greater, emissions in excess of 8.2 × 10−5 lbs combined cadmium and lead emissions attributable to the hazardous waste per million Btu heat input from the hazardous waste on an (not-to-exceed) annual averaging period;
  - (4) For chromium, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md):
    - (i) When you burn hazardous waste with an as-fired heating value less than 10,000 Btu/lb, emissions in excess of 370 µg/dscm, corrected to 7 percent oxygen;
    - (ii) When you burn hazardous waste with an as-fired heating value of 10,000 Btu/lb or greater, emissions in excess of 1.3 × 10−4 lbs chromium emissions attributable to the hazardous waste per million Btu heat input from the hazardous waste;
  - (5) **For carbon monoxide and hydrocarbons, either—**
    - (i) Carbon monoxide in excess of 100 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis and corrected to 7 percent oxygen. If you elect to comply with this carbon monoxide standard rather than the hydrocarbon standard under [paragraph (a)(5)(ii)](#a-5-ii) of this section, you must also document that, during the destruction and removal efficiency (DRE) test runs or their equivalent as provided by [§ 63.1206(b)(7)](/cfr/40/63.1206.md?p=b-7), hydrocarbons do not exceed 10 parts per million by volume during those runs, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane; or
    - (ii) Hydrocarbons in excess of 10 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane;
  - (6) For hydrogen chloride and chlorine, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md):
    - (i) When you burn hazardous waste with an as-fired heating value less than 10,000 Btu/lb, emissions in excess of 31 parts per million by volume, combined emissions, expressed as a chloride (Cl−) equivalent, dry basis and corrected to 7 percent oxygen;
    - (ii) When you burn hazardous waste with an as-fired heating value of 10,000 Btu/lb or greater, emissions in excess of 5.1 × 10−2 lbs combined emissions of hydrogen chloride and chlorine gas attributable to the hazardous waste per million Btu heat input from the hazardous waste;
  - (7) For particulate matter, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md) or as provided by [paragraph (e)](#e) of this section, emissions in excess of 80 mg/dscm corrected to 7 percent oxygen;
  - (8) For hydrogen fluoride, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), you must follow the work practice standard as defined under [§ 63.1209(s)(1)](/cfr/40/63.1209.md?p=s-1); and
  - (9) For hydrogen cyanide, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md):
    - (i) If your liquid fuel boiler has a heat input capacity of greater than 50 MMBTU/hr and less than or equal to 250 MMBTU/hr, emissions in excess of 2.7 parts per million by volume, dry basis and corrected to 7 percent oxygen;
    - (ii) If your liquid fuel boiler has a heat input capacity of greater than 250 MMBTU/hr, emissions in excess of 3.4 parts per million by volume, dry basis and corrected to 7 percent oxygen.
- (b) **Emission limits for new sources.** You must not discharge or cause combustion gases to be emitted into the atmosphere that contain:
  - (1)
    - (i) Dioxins and furans in excess of 0.40 ng TEQ/dscm, corrected to 7 percent oxygen, for liquid fuel boilers equipped with a dry air pollution control system; or
    - (ii) Either carbon monoxide or hydrocarbon emissions in excess of the limits provided by [paragraph (b)(5)](#b-5) of this section for sources not equipped with a dry air pollution control system;
    - (iii) A source equipped with a wet air pollution control system followed by a dry air pollution control system is not considered to be a dry air pollution control system, and a source equipped with a dry air pollution control system followed by a wet air pollution control system is considered to be a dry air pollution control system for purposes of this emission limit;
  - (2) **For mercury—**
    - (i) When you burn hazardous waste with an as-fired heating value less than 10,000 Btu/lb, emissions in excess of 6.8 µg/dscm, corrected to 7 percent oxygen, on an (not-to-exceed) annual averaging period;
    - (ii) When you burn hazardous waste with an as-fired heating value of 10,000 Btu/lb or greater, emissions in excess of 1.2 × 10−6 lbs mercury emissions attributable to the hazardous waste per million Btu heat input from the hazardous waste on an (not-to-exceed) annual averaging period;
  - (3) For cadmium and lead combined, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md):
    - (i) When you burn hazardous waste with an as-fired heating value less than 10,000 Btu/lb, emissions in excess of 78 µg/dscm, corrected to 7 percent oxygen, on an (not-to-exceed) annual averaging period;
    - (ii) When you burn hazardous waste with an as-fired heating value greater than or equal to 10,000 Btu/lb, emissions in excess of 6.2 × 10−6 lbs combined cadmium and lead emissions attributable to the hazardous waste per million Btu heat input from the hazardous waste on an (not-to-exceed) annual averaging period;
  - (4) For chromium, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md):
    - (i) When you burn hazardous waste with an as-fired heating value less than 10,000 Btu/lb, emissions in excess of 12 µg/dscm, corrected to 7 percent oxygen;
    - (ii) When you burn hazardous waste with an as-fired heating value of 10,000 Btu/lb or greater, emissions in excess of 1.4 × 10−5 lbs chromium emissions attributable to the hazardous waste per million Btu heat input from the hazardous waste;
  - (5) **For carbon monoxide and hydrocarbons, either—**
    - (i) Carbon monoxide in excess of 100 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis and corrected to 7 percent oxygen. If you elect to comply with this carbon monoxide standard rather than the hydrocarbon standard under [paragraph (b)(5)(ii)](#b-5-ii) of this section, you must also document that, during the destruction and removal efficiency (DRE) test runs or their equivalent as provided by [§ 63.1206(b)(7)](/cfr/40/63.1206.md?p=b-7), hydrocarbons do not exceed 10 parts per million by volume during those runs, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane; or
    - (ii) Hydrocarbons in excess of 10 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane;
  - (6) For hydrogen chloride and chlorine, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md):
    - (i) When you burn hazardous waste with an as-fired heating value less than 10,000 Btu/lb, emissions in excess of 31 parts per million by volume, combined emissions, expressed as a chloride (Cl−) equivalent, dry basis and corrected to 7 percent oxygen;
    - (ii) When you burn hazardous waste with an as-fired heating value of 10,000 Btu/lb or greater, emissions in excess of 5.1 ×−2 lbs combined emissions of hydrogen chloride and chlorine gas attributable to the hazardous waste per million Btu heat input from the hazardous waste;
  - (7) For particulate matter, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md) or as provided by [paragraph (e)](#e) of this section, emissions in excess of 20 mg/dscm corrected to 7 percent oxygen;
  - (8) For hydrogen fluoride, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), you must follow the work practice standard as defined under [§ 63.1209(s)(1)](/cfr/40/63.1209.md?p=s-1); and
  - (9) For hydrogen cyanide, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md):
    - (i) If your liquid fuel boiler has a heat input capacity of greater than 50 MMBTU/hr and less than or equal to 250 MMBTU/hr, emissions in excess of 1.2 parts per million by volume, dry basis and corrected to 7 percent oxygen;
    - (ii) If your liquid fuel boiler has a heat input capacity of greater than 250 MMBTU/hr, emissions in excess of 1.1 parts per million by volume, dry basis and corrected to 7 percent oxygen.
- (c) **Destruction and removal efficiency (DRE) standard—**
  - (1) **99.99% DRE.** Except as provided in [paragraph (c)(2)](#c-2) of this section, you must achieve a DRE of 99.99% for each principle organic hazardous constituent (POHC) designated under [paragraph (c)(3)](#c-3) of this section. You must calculate DRE for each POHC from the following equation:
  - (2) **99.9999% DRE.** If you burn the dioxin-listed hazardous wastes F020, F021, F022, F023, F026, or F027 (see [§ 261.31](/cfr/40/261.31.md) of this chapter), you must achieve a DRE of 99.9999% for each POHC that you designate under [paragraph (c)(3)](#c-3) of this section. You must demonstrate this DRE performance on POHCs that are more difficult to incinerate than tetra-, penta-, and hexachlorodibenzo-p-dioxins and dibenzofurans. You must use the equation in [paragraph (c)(1)](#c-1) of this section to calculate DRE for each POHC. In addition, you must notify the Administrator of your intent to incinerate hazardous wastes F020, F021, F022, F023, F026, or F027.
  - (3) **Principal organic hazardous constituents (POHCs).**
    - (i) You must treat the POHCs in the waste feed that you specify under [paragraph (c)(3)(ii)](#c-3-ii) of this section to the extent required by paragraphs [(c)(1)](#c-1) and [(2)](#c-2) of this section.
    - (ii) You must specify one or more POHCs that are representative of the most difficult to destroy organic compounds in your hazardous waste feedstream. You must base this specification on the degree of difficulty of incineration of the organic constituents in the hazardous waste and on their concentration or mass in the hazardous waste feed, considering the results of hazardous waste analyses or other data and information.
- (d) **Significant figures.** The emission limits provided by paragraphs [(a)](#a) and [(b)](#b) of this section are presented with two significant figures. Although you must perform intermediate calculations using at least five significant figures, you may round the resultant emission levels to two significant figures to document compliance.
- (e) **Alternative to the particulate matter standard—**
  - (1) **General.** In lieu of complying with the particulate matter standards of this section, you may elect to comply with the following alternative metal emission control requirement:
  - (2) **Alternative metal emission control requirements for existing liquid fuel boilers.**
    - (i) **When you burn hazardous waste with a heating value less than 10,000 Btu/lb—**
      - (A) You must not discharge or cause combustion gases to be emitted into the atmosphere that contain cadmium, lead, and selenium, combined, in excess of 150 µg/dscm, corrected to 7 percent oxygen; and
      - (B) You must not discharge or cause combustion gases to be emitted into the atmosphere that contain antimony, arsenic, beryllium, chromium, cobalt, manganese, and nickel, combined, in excess of 370 µg/dscm, corrected to 7 percent oxygen;
    - (ii) **When you burn hazardous waste with a heating value of 10,000 Btu/lb or greater—**
      - (A) You must not discharge or cause combustion gases to be emitted into the atmosphere that contain in excess of 8.2 × 10−5 lbs combined emissions of cadmium, lead, and selenium attributable to the hazardous waste per million Btu heat input from the hazardous waste; and
      - (B) You must not discharge or cause combustion gases to be emitted into the atmosphere that contain either in excess of 1.3 × 10−4 lbs combined emissions of antimony, arsenic, beryllium, chromium, cobalt, manganese, and nickel attributable to the hazardous waste per million Btu heat input from the hazardous waste;
  - (3) **Alternative metal emission control requirements for new liquid fuel boilers.**
    - (i) **When you burn hazardous waste with a heating value less than 10,000 Btu/lb—**
      - (A) You must not discharge or cause combustion gases to be emitted into the atmosphere that contain cadmium, lead, and selenium, combined, in excess of 78 µg/dscm, corrected to 7 percent oxygen; and
      - (B) You must not discharge or cause combustion gases to be emitted into the atmosphere that contain antimony, arsenic, beryllium, chromium, cobalt, manganese, and nickel, combined, in excess of 12 µg/dscm, corrected to 7 percent oxygen;
    - (ii) **When you burn hazardous waste with a heating value greater than or equal to 10,000 Btu/lb—**
      - (A) You must not discharge or cause combustion gases to be emitted into the atmosphere that contain in excess of 6.2 × 10−6 lbs combined emissions of cadmium, lead, and selenium attributable to the hazardous waste per million Btu heat input from the hazardous waste; and
      - (B) You must not discharge or cause combustion gases to be emitted into the atmosphere that contain either in excess of 1.4 × 10−5 lbs combined emissions of antimony, arsenic, beryllium, chromium, cobalt, manganese, and nickel attributable to the hazardous waste per million Btu heat input from the hazardous waste;
  - (4) **Operating limits.** Semivolatile and low volatile metal operating parameter limits must be established to ensure compliance with the alternative emission limitations described in paragraphs [(e)(2)](#e-2) and [(3)](#e-3) of this section pursuant to [§ 63.1209(n)](/cfr/40/63.1209.md?p=n), except that semivolatile metal feedrate limits apply to lead, cadmium, and selenium, combined, and low volatile metal feedrate limits apply to arsenic, beryllium, chromium, antimony, cobalt, manganese, and nickel, combined.
- (f) **Elective standards for area sources.** Area sources as defined under [§ 63.2](/cfr/40/63.2.md) are subject to the standards for cadmium and lead, the standards for chromium, the standards for hydrogen chloride and chlorine, and the standards for particulate matter under this section if they elect under [§ 266.100(b)(3)](/cfr/40/266.100.md?p=b-3) of this chapter to comply with those standards in lieu of the standards under [§§ 266.105 through 266.107](/cfr/40/266.105..266.107.md) of this chapter to control those pollutants.

# §63.1218. What are the standards for hydrochloric acid production furnaces that burn hazardous waste?

- (a) **Emission limits for existing sources.** You must not discharge or cause combustion gases to be emitted into the atmosphere that contain:
  - (1) For dioxins and furans, either carbon monoxide or hydrocarbon emissions in excess of the limits provided by [paragraph (a)(5)](#a-5) of this section;
  - (2) For mercury, hydrogen chloride and chlorine gas emissions in excess of the levels provided by [paragraph (a)(6)](#a-6) of this section;
  - (3) For lead and cadmium, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), hydrogen chloride and chlorine gas emissions in excess of the levels provided by [paragraph (a)(6)](#a-6) of this section;
  - (4) For arsenic, beryllium, and chromium, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), hydrogen chloride and chlorine gas emissions in excess of the levels provided by [paragraph (a)(6)](#a-6) of this section;
  - (5) **For carbon monoxide and hydrocarbons, either—**
    - (i) Carbon monoxide in excess of 100 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis and corrected to 7 percent oxygen. If you elect to comply with this carbon monoxide standard rather than the hydrocarbon standard under [paragraph (a)(5)(ii)](#a-5-ii) of this section, you must also document that, during the destruction and removal efficiency (DRE) test runs or their equivalent as provided by [§ 63.1206(b)(7)](/cfr/40/63.1206.md?p=b-7), hydrocarbons do not exceed 10 parts per million by volume during those runs, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane; or
    - (ii) Hydrocarbons in excess of 10 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane;
  - (6) **For hydrogen chloride and chlorine gas, either—**
    - (i) Emission in excess of 150 parts per million by volume, combined emissions, expressed as a chloride (Cl(−) equivalent, dry basis and corrected to 7 percent oxygen; or
    - (ii) Emissions greater than the levels that would be emitted if the source is achieving a system removal efficiency (SRE) of less than 99.923 percent for total chlorine and chloride fed to the combustor. You must calculate SRE from the following equation:
  - (7) For particulate matter, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), hydrogen chloride and chlorine gas emissions in excess of the levels provided by [paragraph (a)(6)](#a-6) of this section.
- (b) **Emission limits for new sources.** You must not discharge or cause combustion gases to be emitted into the atmosphere that contain:
  - (1) For dioxins and furans, either carbon monoxide or hydrocarbon emissions in excess of the limits provided by [paragraph (b)(5)](#b-5) of this section;
  - (2) For mercury, hydrogen chloride and chlorine gas emissions in excess of the levels provided by [paragraph (b)(6)](#b-6) of this section;
  - (3) For lead and cadmium, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), hydrogen chloride and chlorine gas emissions in excess of the levels provided by [paragraph (b)(6)](#b-6) of this section;
  - (4) For arsenic, beryllium, and chromium, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), hydrogen chloride and chlorine gas emissions in excess of the levels provided by [paragraph (b)(6)](#b-6) of this section;
  - (5) **For carbon monoxide and hydrocarbons, either—**
    - (i) Carbon monoxide in excess of 100 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis and corrected to 7 percent oxygen. If you elect to comply with this carbon monoxide standard rather than the hydrocarbon standard under [paragraph (b)(5)(ii)](#b-5-ii) of this section, you must also document that, during the destruction and removal efficiency (DRE) test runs or their equivalent as provided by [§ 63.1206(b)(7)](/cfr/40/63.1206.md?p=b-7), hydrocarbons do not exceed 10 parts per million by volume during those runs, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane; or
    - (ii) Hydrocarbons in excess of 10 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane;
  - (6) **For hydrogen chloride and chlorine gas, either—**
    - (i) Emission in excess of 25 parts per million by volume, combined emissions, expressed as a chloride (Cl(−) equivalent, dry basis and corrected to 7 percent oxygen; or
    - (ii) Emissions greater than the levels that would be emitted if the source is achieving a system removal efficiency (SRE) of less than 99.987 percent for total chlorine and chloride fed to the combustor. You must calculate SRE from the following equation:
  - (7) For particulate matter, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), hydrogen chloride and chlorine gas emissions in excess of the levels provided by [paragraph (b)(6)](#b-6) of this section.
- (c) **Destruction and removal efficiency (DRE) standard—**
  - (1) **99.99% DRE.** Except as provided in [paragraph (c)(2)](#c-2) of this section, you must achieve a DRE of 99.99% for each principle organic hazardous constituent (POHC) designated under [paragraph (c)(3)](#c-3) of this section. You must calculate DRE for each POHC from the following equation:
  - (2) **99.9999% DRE.** If you burn the dioxin-listed hazardous wastes F020, F021, F022, F023, F026, or F027 (see [§ 261.31](/cfr/40/261.31.md) of this chapter), you must achieve a DRE of 99.9999% for each POHC that you designate under [paragraph (c)(3)](#c-3) of this section. You must demonstrate this DRE performance on POHCs that are more difficult to incinerate than tetra-, penta-, and hexachlorodibenzo-p-dioxins and dibenzofurans. You must use the equation in [paragraph (c)(1)](#c-1) of this section to calculate DRE for each POHC. In addition, you must notify the Administrator of your intent to incinerate hazardous wastes F020, F021, F022, F023, F026, or F027.
  - (3) **Principal organic hazardous constituents (POHCs).**
    - (i) You must treat the POHCs in the waste feed that you specify under [paragraph (c)(3)(ii)](#c-3-ii) of this section to the extent required by paragraphs [(c)(1)](#c-1) and [(c)(2)](#c-2) of this section.
    - (ii) You must specify one or more POHCs that are representative of the most difficult to destroy organic compounds in your hazardous waste feedstream. You must base this specification on the degree of difficulty of incineration of the organic constituents in the hazardous waste and on their concentration or mass in the hazardous waste feed, considering the results of hazardous waste analyses or other data and information.
- (d) **Significant figures.** The emission limits provided by paragraphs [(a)](#a) and [(b)](#b) of this section are presented with two significant figures. Although you must perform intermediate calculations using at least five significant figures, you may round the resultant emission levels to two significant figures to document compliance.
- (e) **Elective standards for area sources.** Area sources as defined under [§ 63.2](/cfr/40/63.2.md) are subject to the standards for cadmium and lead, the standards for arsenic, beryllium, and chromium, the standards for hydrogen chloride and chlorine, and the standards for particulate matter under this section if they elect under [§ 266.100(b)(3)](/cfr/40/266.100.md?p=b-3) of this chapter to comply with those standards in lieu of the standards under 40 CFR [266.105](/cfr/40/266.105.md), [266.106](/cfr/40/266.106.md), and [266.107](/cfr/40/266.107.md) to control those pollutants.

# §63.1219. What are the replacement standards for hazardous waste incinerators?

- (a) **Emission limits for existing sources.** You must not discharge or cause combustion gases to be emitted into the atmosphere that contain:
  - (1) **For dioxins and furans—**
    - (i) **For incinerators equipped with either a waste heat boiler or dry air pollution control system, either—**
      - (A) Emissions in excess of 0.20 ng TEQ/dscm, corrected to 7 percent oxygen; or
      - (B) Emissions in excess of 0.40 ng TEQ/dscm, corrected to 7 percent oxygen, provided that the combustion gas temperature at the inlet to the initial particulate matter control device is 400 °F or lower based on the average of the test run average temperatures. (For purposes of compliance, operation of a wet particulate matter control device is presumed to meet the 400 °F or lower requirement);
    - (ii) Emissions in excess of 0.40 ng TEQ/dscm, corrected to 7 percent oxygen, for incinerators not equipped with either a waste heat boiler or dry air pollution control system;
    - (iii) A source equipped with a wet air pollution control system followed by a dry air pollution control system is not considered to be a dry air pollution control system, and a source equipped with a dry air pollution control system followed by a wet air pollution control system is considered to be a dry air pollution control system for purposes of this standard;
  - (2) Mercury in excess of 130 µg/dscm, corrected to 7 percent oxygen;
  - (3) Cadmium and lead in excess of 230 µg/dscm, combined emissions, corrected to 7 percent oxygen;
  - (4) Arsenic, beryllium, and chromium in excess of 92 µg/dscm, combined emissions, corrected to 7 percent oxygen;
  - (5) **For carbon monoxide and hydrocarbons, either—**
    - (i) Carbon monoxide in excess of 100 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis and corrected to 7 percent oxygen. If you elect to comply with this carbon monoxide standard rather than the hydrocarbon standard under [paragraph (a)(5)(ii)](#a-5-ii) of this section, you must also document that, during the destruction and removal efficiency (DRE) test runs or their equivalent as provided by [§ 63.1206(b)(7)](/cfr/40/63.1206.md?p=b-7), hydrocarbons do not exceed 10 parts per million by volume during those runs, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane; or
    - (ii) Hydrocarbons in excess of 10 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane;
  - (6) Hydrogen chloride and chlorine gas (total chlorine) in excess of 32 parts per million by volume, combined emissions, expressed as a chloride (Cl−) equivalent, dry basis and corrected to 7 percent oxygen;
  - (7) Except as provided by [paragraph (e)](#e) of this section, particulate matter in excess of 0.013 gr/dscf corrected to 7 percent oxygen; and
  - (8) For hydrogen fluoride, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), you must follow the work practice standard as defined under [§ 63.1209(s)(1)](/cfr/40/63.1209.md?p=s-1).
- (b) **Emission limits for new sources.** You must not discharge or cause combustion gases to be emitted into the atmosphere that contain:
  - (1)
    - (i) Dioxins and furans in excess of 0.11 ng TEQ/dscm corrected to 7 percent oxygen for incinerators equipped with either a waste heat boiler or dry air pollution control system; or
    - (ii) Dioxins and furans in excess of 0.20 ng TEQ/dscm corrected to 7 percent oxygen for sources not equipped with either a waste heat boiler or dry air pollution control system;
    - (iii) A source equipped with a wet air pollution control system followed by a dry air pollution control system is not considered to be a dry air pollution control system, and a source equipped with a dry air pollution control system followed by a wet air pollution control system is considered to be a dry air pollution control system for purposes of this standard;
  - (2) Mercury in excess of 8.1 µg/dscm, corrected to 7 percent oxygen;
  - (3) Cadmium and lead in excess of 10 µg/dscm, combined emissions, corrected to 7 percent oxygen;
  - (4) Arsenic, beryllium, and chromium in excess of 23 µg/dscm, combined emissions, corrected to 7 percent oxygen;
  - (5) **For carbon monoxide and hydrocarbons, either—**
    - (i) Carbon monoxide in excess of 100 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis and corrected to 7 percent oxygen. If you elect to comply with this carbon monoxide standard rather than the hydrocarbon standard under [paragraph (b)(5)(ii)](#b-5-ii) of this section, you must also document that, during the destruction and removal efficiency (DRE) test runs or their equivalent as provided by [§ 63.1206(b)(7)](/cfr/40/63.1206.md?p=b-7), hydrocarbons do not exceed 10 parts per million by volume during those runs, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane; or
    - (ii) Hydrocarbons in excess of 10 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane;
  - (6) Hydrogen chloride and chlorine gas in excess of 21 parts per million by volume, combined emissions, expressed as a chloride (Cl−) equivalent, dry basis and corrected to 7 percent oxygen;
  - (7) Except as provided by [paragraph (e)](#e) of this section, particulate matter emissions in excess of 0.0016 gr/dscf corrected to 7 percent oxygen; and
  - (8) For hydrogen fluoride, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), you must follow the work practice standard as defined under [§ 63.1209(s)(1)](/cfr/40/63.1209.md?p=s-1).
- (c) **Destruction and removal efficiency (DRE) standard—**
  - (1) **99.99% DRE.** Except as provided in [paragraph (c)(2)](#c-2) of this section, you must achieve a destruction and removal efficiency (DRE) of 99.99% for each principle organic hazardous constituent (POHC) designated under [paragraph (c)(3)](#c-3) of this section. You must calculate DRE for each POHC from the following equation:

    DRE = [1−(Wout/Win)] × 100%

  - (2) **99.9999% DRE.** If you burn the dioxin-listed hazardous wastes F020, F021, F022, F023, F026, or F027 (see [§ 261.31](/cfr/40/261.31.md) of this chapter), you must achieve a DRE of 99.9999% for each POHC that you designate under [paragraph (c)(3)](#c-3) of this section. You must demonstrate this DRE performance on POHCs that are more difficult to incinerate than tetra-, penta-, and hexachlorodibenzo-p-dioxins and dibenzofurans. You must use the equation in [paragraph (c)(1)](#c-1) of this section to calculate DRE for each POHC. In addition, you must notify the Administrator of your intent to incinerate hazardous wastes F020, F021, F022, F023, F026, or F027.
  - (3) **Principal organic hazardous constituent (POHC).**
    - (i) You must treat each POHC in the waste feed that you specify under [paragraph (c)(3)(ii)](#c-3-ii) of this section to the extent required by paragraphs [(c)(1)](#c-1) and [(2)](#c-2) of this section.
    - (ii) You must specify one or more POHCs that are representative of the most difficult to destroy organic compounds in your hazardous waste feedstream. You must base this specification on the degree of difficulty of incineration of the organic constituents in the hazardous waste and on their concentration or mass in the hazardous waste feed, considering the results of hazardous waste analyses or other data and information.
- (d) **Significant figures.** The emission limits provided by paragraphs [(a)](#a) and [(b)](#b) of this section are presented with two significant figures. Although you must perform intermediate calculations using at least five significant figures, you may round the resultant emission levels to two significant figures to document compliance.
- (e) **Alternative to the particulate matter standard—**
  - (1) **General.** In lieu of complying with the particulate matter standards of this section, you may elect to comply with the following alternative metal emission control requirement:
  - (2) **Alternative metal emission control requirements for existing incinerators.**
    - (i) You must not discharge or cause combustion gases to be emitted into the atmosphere that contain cadmium, lead, and selenium in excess of 230 µg/dscm, combined emissions, corrected to 7 percent oxygen; and,
    - (ii) You must not discharge or cause combustion gases to be emitted into the atmosphere that contain antimony, arsenic, beryllium, chromium, cobalt, manganese, and nickel in excess of 92 µg/dscm, combined emissions, corrected to 7 percent oxygen.
  - (3) **Alternative metal emission control requirements for new incinerators.**
    - (i) You must not discharge or cause combustion gases to be emitted into the atmosphere that contain cadmium, lead, and selenium in excess of 10 µg/dscm, combined emissions, corrected to 7 percent oxygen; and,
    - (ii) You must not discharge or cause combustion gases to be emitted into the atmosphere that contain antimony, arsenic, beryllium, chromium, cobalt, manganese, and nickel in excess of 23 µg/dscm, combined emissions, corrected to 7 percent oxygen.
  - (4) **Operating limits.** Semivolatile and low volatile metal operating parameter limits must be established to ensure compliance with the alternative emission limitations described in paragraphs [(e)(2)](#e-2) and [(3)](#e-3) of this section pursuant to [§ 63.1209(n)](/cfr/40/63.1209.md?p=n), except that semivolatile metal feedrate limits apply to lead, cadmium, and selenium, combined, and low volatile metal feedrate limits apply to arsenic, beryllium, chromium, antimony, cobalt, manganese, and nickel, combined.

# §63.1220. What are the replacement standards for hazardous waste burning cement kilns?

- (a) **Emission and hazardous waste feed limits for existing sources.** You must not discharge or cause combustion gases to be emitted into the atmosphere or feed hazardous waste that contain:
  - (1) **For dioxins and furans, either—**
    - (i) Emissions in excess of 0.20 ng TEQ/dscm corrected to 7 percent oxygen; or
    - (ii) Emissions in excess of 0.40 ng TEQ/dscm corrected to 7 percent oxygen provided that the combustion gas temperature at the inlet to the initial dry particulate matter control device is 400 °F or lower based on the average of the test run average temperatures;
  - (2) **For mercury, both—**
    - (i) An average as-fired concentration of mercury in all hazardous waste feedstreams in excess of 3.0 parts per million by weight; and
    - (ii) **Either—**
      - (A) Emissions in excess of 120 µg/dscm, corrected to 7 percent oxygen, or
      - (B) A hazardous waste feed maximum theoretical emission concentration (MTEC) in excess of 120 µg/dscm;
  - (3) **For cadmium and lead, both—**
    - (i) Emissions in excess of 7.6 × 10−4 lbs combined emissions of cadmium and lead attributable to the hazardous waste per million Btu heat input from the hazardous waste; and
    - (ii) Emissions in excess of 330 µg/dscm, combined emissions, corrected to 7 percent oxygen;
  - (4) **For arsenic, beryllium, and chromium, both—**
    - (i) Emissions in excess of 2.1 × 10−5 lbs combined emissions of arsenic, beryllium, and chromium attributable to the hazardous waste per million Btu heat input from the hazardous waste; and
    - (ii) Emissions in excess of 56 µg/dscm, combined emissions, corrected to 7 percent oxygen;
  - (5) **Carbon monoxide and hydrocarbons.**
    - (i) **For kilns equipped with a by-pass duct or midkiln gas sampling system, either—**
      - (A) Carbon monoxide in the by-pass duct or mid-kiln gas sampling system in excess of 100 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis and corrected to 7 percent oxygen. If you elect to comply with this carbon monoxide standard rather than the hydrocarbon standard under [paragraph (a)(5)(i)(B)](#a-5-i-B) of this section, you must also document that, during the destruction and removal efficiency (DRE) test runs or their equivalent as provided by [§ 63.1206(b)(7)](/cfr/40/63.1206.md?p=b-7), hydrocarbons in the by-pass duct or mid-kiln gas sampling system do not exceed 10 parts per million by volume during those runs, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane; or
      - (B) Hydrocarbons in the by-pass duct or midkiln gas sampling system in excess of 10 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane;
    - (ii) **For kilns not equipped with a by-pass duct or midkiln gas sampling system, either—**
      - (A) Hydrocarbons in the main stack in excess of 20 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane; or
      - (B) Carbon monoxide in the main stack in excess of 100 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis and corrected to 7 percent oxygen. If you elect to comply with this carbon monoxide standard rather than the hydrocarbon standard under [paragraph (a)(5)(ii)(A)](#a-5-ii-A) of this section, you also must document that, during the destruction and removal efficiency (DRE) test runs or their equivalent as provided by [§ 63.1206(b)(7)](/cfr/40/63.1206.md?p=b-7), hydrocarbons in the main stack do not exceed 20 parts per million by volume during those runs, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane.
  - (6) Hydrogen chloride and chlorine gas in excess of 120 parts per million by volume, combined emissions, expressed as a chloride (Cl(−)) equivalent, dry basis, corrected to 7 percent oxygen; and
  - (7) **For particulate matter, both—**
    - (i) Emissions in excess of 0.028 gr/dscf corrected to 7 percent oxygen; and
    - (ii) Opacity greater than 20 percent, unless your source is equipped with a bag leak detection system under [§ 63.1206(c)(8)](/cfr/40/63.1206.md?p=c-8) or a particulate matter detection system under [§ 63.1206(c)(9)](/cfr/40/63.1206.md?p=c-9).
  - (8) For hydrogen fluoride, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), you must follow the work practice standard as defined under [§ 63.1209(s)(1)](/cfr/40/63.1209.md?p=s-1); and
  - (9) For hydrogen cyanide, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), emissions in excess of 56 parts per million by volume, dry basis and corrected to 7 percent oxygen.
- (b) **Emission and hazardous waste feed limits for new sources.** You must not discharge or cause combustion gases to be emitted into the atmosphere or feed hazardous waste that contain:
  - (1) **For dioxins and furans, either—**
    - (i) Emissions in excess of 0.20 ng TEQ/dscm corrected to 7 percent oxygen; or
    - (ii) Emissions in excess of 0.40 ng TEQ/dscm corrected to 7 percent oxygen provided that the combustion gas temperature at the inlet to the initial dry particulate matter control device is 400 °F or lower based on the average of the test run average temperatures;
  - (2) **For mercury, both—**
    - (i) An average as-fired concentration of mercury in all hazardous waste feedstreams in excess of 1.9 parts per million by weight; and
    - (ii) **Either—**
      - (A) Emissions in excess of 120 µg/dscm, corrected to 7 percent oxygen, or
      - (B) A hazardous waste feed maximum theoretical emission concentration (MTEC) in excess of 120 µg/dscm;
  - (3) **For cadmium and lead, both—**
    - (i) Emissions in excess of 6.2 × 10−5 lbs combined emissions of cadmium and lead attributable to the hazardous waste per million Btu heat input from the hazardous waste; and
    - (ii) Emissions in excess of 180 µg/dscm, combined emissions, corrected to 7 percent oxygen;
  - (4) **For arsenic, beryllium, and chromium, both—**
    - (i) Emissions in excess of 1.5 × 10−5 lbs combined emissions of arsenic, beryllium, and chromium attributable to the hazardous waste per million Btu heat input from the hazardous waste; and
    - (ii) Emissions in excess of 54 µg/dscm, combined emissions, corrected to 7 percent oxygen;
  - (5) **Carbon monoxide and hydrocarbons.**
    - (i) For kilns equipped with a by-pass duct or midkiln gas sampling system, carbon monoxide and hydrocarbons emissions are limited in both the bypass duct or midkiln gas sampling system and the main stack as follows:
      - (A) **Emissions in the by-pass or midkiln gas sampling system are limited to either—** (1) Carbon monoxide in excess of 100 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis and corrected to 7 percent oxygen. If you elect to comply with this carbon monoxide standard rather than the hydrocarbon standard under paragraph (b)(5)(i)(A)(2) of this section, you also must document that, during the destruction and removal efficiency (DRE) test runs or their equivalent as provided by [§ 63.1206(b)(7)](/cfr/40/63.1206.md?p=b-7), hydrocarbons do not exceed 10 parts per million by volume during those runs, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane; or

        (2) Hydrocarbons in the by-pass duct or midkiln gas sampling system in excess of 10 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane; and

      - (B) Hydrocarbons in the main stack are limited, if construction of the kiln commenced after April 19, 1996 at a plant site where a cement kiln (whether burning hazardous waste or not) did not previously exist, to 50 parts per million by volume, over a 30-day block average (monitored continuously with a continuous monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane.
    - (ii) For kilns not equipped with a by-pass duct or midkiln gas sampling system, hydrocarbons and carbon monoxide are limited in the main stack to either:
      - (A) Hydrocarbons not exceeding 20 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane; or
      - (B) (1) Carbon monoxide not exceeding 100 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen; and

        (2) Hydrocarbons not exceeding 20 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane at any time during the destruction and removal efficiency (DRE) test runs or their equivalent as provided by [§ 63.1206(b)(7)](/cfr/40/63.1206.md?p=b-7); and

        (3) If construction of the kiln commenced after April 19, 1996 at a plant site where a cement kiln (whether burning hazardous waste or not) did not previously exist, hydrocarbons are limited to 50 parts per million by volume, over a 30-day block average (monitored continuously with a continuous monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane.

  - (6) Hydrogen chloride and chlorine gas in excess of 86 parts per million by volume, combined emissions, expressed as a chloride (Cl(−)) equivalent, dry basis and corrected to 7 percent oxygen; and
  - (7) **For particulate matter, both—**
    - (i) Emissions in excess of 0.0069 gr/dscf corrected to 7 percent oxygen; and
    - (ii) Opacity greater than 20 percent, unless your source is equipped with a bag leak detection system under [§ 63.1206(c)(8)](/cfr/40/63.1206.md?p=c-8) or a particulate matter detection system under [§ 63.1206(c)(9)](/cfr/40/63.1206.md?p=c-9).
  - (8) For hydrogen fluoride, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), you must follow the work practice standard as defined under [§ 63.1209(s)(1)](/cfr/40/63.1209.md?p=s-1); and
  - (9) For hydrogen cyanide, except for an area source as defined under [§ 63.2](/cfr/40/63.2.md), emissions in excess of 1.8 parts per million by volume, dry basis and corrected to 7 percent oxygen.
- (c) **Destruction and removal efficiency (DRE) standard—**
  - (1) **99.99% DRE.** Except as provided in [paragraph (c)(2)](#c-2) of this section, you must achieve a destruction and removal efficiency (DRE) of 99.99% for each principle organic hazardous constituent (POHC) designated under [paragraph (c)(3)](#c-3) of this section. You must calculate DRE for each POHC from the following equation:
  - (2) **99.9999% DRE.** If you burn the dioxin-listed hazardous wastes F020, F021, F022, F023, F026, or F027 (see [§ 261.31](/cfr/40/261.31.md) of this chapter), you must achieve a DRE of 99.9999% for each POHC that you designate under [paragraph (c)(3)](#c-3) of this section. You must demonstrate this DRE performance on POHCs that are more difficult to incinerate than tetra-, penta-, and hexachlorodibenzo-p-dioxins and dibenzofurans. You must use the equation in [paragraph (c)(1)](#c-1) of this section to calculate DRE for each POHC. In addition, you must notify the Administrator of your intent to incinerate hazardous wastes F020, F021, F022, F023, F026, or F027.
  - (3) **Principal organic hazardous constituent (POHC).**
    - (i) You must treat each POHC in the waste feed that you specify under [paragraph (c)(3)(ii)](#c-3-ii) of this section to the extent required by paragraphs [(c)(1)](#c-1) and [(c)(2)](#c-2) of this section.
    - (ii) You must specify one or more POHCs that are representative of the most difficult to destroy organic compounds in your hazardous waste feedstream. You must base this specification on the degree of difficulty of incineration of the organic constituents in the hazardous waste and on their concentration or mass in the hazardous waste feed, considering the results of hazardous waste analyses or other data and information.
- (d) **Cement kilns with in-line kiln raw mills—**
  - (1) **General.**
    - (i) You must conduct performance testing when the raw mill is on-line and when the mill is off-line to demonstrate compliance with the emission standards, and you must establish separate operating parameter limits under [§ 63.1209](/cfr/40/63.1209.md) for each mode of operation, except as provided by paragraphs [(d)(1)(iv)](#d-1-iv) and [(d)(1)(v)](#d-1-v) of this section.
    - (ii) You must document in the operating record each time you change from one mode of operation to the alternate mode and begin complying with the operating parameter limits for that alternate mode of operation.
    - (iii) You must calculate rolling averages for operating parameter limits as provided by [§ 63.1209(q)(2)](/cfr/40/63.1209.md?p=q-2).
    - (iv) If your in-line kiln raw mill has dual stacks, you may assume that the dioxin/furan emission levels in the by-pass stack and the operating parameter limits determined during performance testing of the by-pass stack when the raw mill is off-line are the same as when the mill is on-line.
    - (v) In lieu of conducting a performance test to demonstrate compliance with the dioxin/furan emission standards for the mode of operation when the raw mill is on-line, you may specify in the performance test workplan and Notification of Compliance the same operating parameter limits required under [§ 63.1209(k)](/cfr/40/63.1209.md?p=k) for the mode of operation when the raw mill is on-line as you establish during performance testing for the mode of operation when the raw mill is off-line.
  - (2) **Emissions averaging.** You may comply with the mercury, semivolatile metal, low volatile metal, and hydrogen chloride/chlorine gas emission standards on a time-weighted average basis under the following procedures:
    - (i) **Averaging methodology.** You must calculate the time-weighted average emission concentration with the following equation:
    - (ii) **Compliance.**
      - (A) If you use this emission averaging provision, you must document in the operating record compliance with the emission standards on an annual basis by using the equation provided by [paragraph (d)(2)](#d-2) of this section.
      - (B) Compliance is based on one-year block averages beginning on the day you submit the initial notification of compliance.
    - (iii) **Notification.**
      - (A) If you elect to document compliance with one or more emission standards using this emission averaging provision, you must notify the Administrator in the initial comprehensive performance test plan submitted under [§ 63.1207(e)](/cfr/40/63.1207.md?p=e).
      - (B) You must include historical raw mill operation data in the performance test plan to estimate future raw mill down-time and document in the performance test plan that estimated emissions and estimated raw mill down-time will not result in an exceedance of an emission standard on an annual basis.
      - (C) You must document in the notification of compliance submitted under [§ 63.1207(j)](/cfr/40/63.1207.md?p=j) that an emission standard will not be exceeded based on the documented emissions from the performance test and predicted raw mill down-time.
- (e) **Preheater or preheater/precalciner kilns with dual stacks—**
  - (1) **General.** You must conduct performance testing on each stack to demonstrate compliance with the emission standards, and you must establish operating parameter limits under [§ 63.1209](/cfr/40/63.1209.md) for each stack, except as provided by [paragraph (d)(1)(iv)](#d-1-iv) of this section for dioxin/furan emissions testing and operating parameter limits for the by-pass stack of in-line raw mills.
  - (2) **Emissions averaging.** You may comply with the mercury, semivolatile metal, low volatile metal, and hydrogen chloride/chlorine gas emission standards specified in this section on a gas flowrate-weighted average basis under the following procedures:
    - (i) **Averaging methodology.** You must calculate the gas flowrate-weighted average emission concentration using the following equation:
    - (ii) **Compliance.**
      - (A) You must demonstrate compliance with the emission standard(s) using the emission concentrations determined from the performance tests and the equation provided by [paragraph (e)(1)](#e-1) of this section; and
      - (B) You must develop operating parameter limits for bypass stack and main stack flowrates that ensure the emission concentrations calculated with the equation in [paragraph (e)(1)](#e-1) of this section do not exceed the emission standards on a 12-hour rolling average basis. You must include these flowrate limits in the Notification of Compliance.
    - (iii) **Notification.** If you elect to document compliance under this emissions averaging provision, you must:
      - (A) Notify the Administrator in the initial comprehensive performance test plan submitted under [§ 63.1207(e)](/cfr/40/63.1207.md?p=e). The performance test plan must include, at a minimum, information describing the flowrate limits established under [paragraph (e)(2)(ii)(B)](#e-2-ii-B) of this section; and
      - (B) Document in the Notification of Compliance submitted under [§ 63.1207(j)](/cfr/40/63.1207.md?p=j) the demonstrated gas flowrate-weighted average emissions that you calculate with the equation provided by [paragraph (e)(2)](#e-2) of this section.
- (f) **Significant figures.** The emission limits provided by paragraphs [(a)](#a) and [(b)](#b) of this section are presented with two significant figures. Although you must perform intermediate calculations using at least five significant figures, you may round the resultant emission levels to two significant figures to document compliance.
- (g) [Reserved]
- (h) When you comply with the particulate matter requirements of paragraphs [(a)(7)](#a-7) or [(b)(7)](#b-7) of this section, you are exempt from the New Source Performance Standard for particulate matter and opacity under [§ 60.60](/cfr/40/60.60.md) of this chapter.

# §63.1221. What are the replacement standards for hazardous waste burning lightweight aggregate kilns?

- (a) **Emission and hazardous waste feed limits for existing sources.** You must not discharge or cause combustion gases to be emitted into the atmosphere or feed hazardous waste that contain:
  - (1) **For dioxins and furans, either—**
    - (i) Emissions in excess of 0.20 ng TEQ/dscm corrected to 7 percent oxygen; or
    - (ii) Rapid quench of the combustion gas temperature at the exit of the (last) combustion chamber (or exit of any waste heat recovery system that immediately follows the last combustion chamber) to 400 °F or lower based on the average of the test run average temperatures. You must also notify in writing the RCRA authority that you are complying with this option;
  - (2) **For mercury, either—**
    - (i) Emissions in excess of 120 µg/dscm, corrected to 7 percent oxygen; or
    - (ii) A hazardous waste feedrate corresponding to a maximum theoretical emission concentration (MTEC) in excess of 120 µg/dscm;
  - (3) **For cadmium and lead, both—**
    - (i) Emissions in excess of 3.0 × 10−4 lbs combined emissions of cadmium and lead attributable to the hazardous waste per million Btu heat input from the hazardous waste; and
    - (ii) Emissions in excess of 250 µg/dscm, combined emissions, corrected to 7 percent oxygen;
  - (4) **For arsenic, beryllium, and chromium, both—**
    - (i) In excess of 9.5 × 10−5 lbs combined emissions of arsenic, beryllium, and chromium attributable to the hazardous waste per million Btu heat input from the hazardous waste;
    - (ii) Emissions in excess of 110 µg/dscm, combined emissions, corrected to 7 percent oxygen;
  - (5) **Carbon monoxide and hydrocarbons.**
    - (i) Carbon monoxide in excess of 100 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis and corrected to 7 percent oxygen. If you elect to comply with this carbon monoxide standard rather than the hydrocarbon standard under [paragraph (a)(5)(ii)](#a-5-ii) of this section, you also must document that, during the destruction and removal efficiency (DRE) test runs or their equivalent as provided by [§ 63.1206(b)(7)](/cfr/40/63.1206.md?p=b-7), hydrocarbons do not exceed 20 parts per million by volume during those runs, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane; or
    - (ii) Hydrocarbons in excess of 20 parts per million by volume, over an hourly rolling average, dry basis, corrected to 7 percent oxygen, and reported as propane;
  - (6) Hydrogen chloride and chlorine gas in excess of 600 parts per million by volume, combined emissions, expressed as a chloride (Cl−) equivalent, dry basis and corrected to 7 percent oxygen; and
  - (7) Particulate matter emissions in excess of 0.025 gr/dscf, corrected to 7 percent oxygen.
- (b) **Emission and hazardous waste feed limits for new sources.** You must not discharge or cause combustion gases to be emitted into the atmosphere or feed hazardous waste that contain:
  - (1) **For dioxins and furans, either—**
    - (i) Emissions in excess of 0.20 ng TEQ/dscm corrected to 7 percent oxygen; or
    - (ii) Rapid quench of the combustion gas temperature at the exit of the (last) combustion chamber (or exit of any waste heat recovery system that immediately follows the last combustion chamber) to 400 °F or lower based on the average of the test run average temperatures. You must also notify in writing the RCRA authority that you are complying with this option;
  - (2) **For mercury, either—**
    - (i) Emissions in excess of 120 µg/dscm, corrected to 7 percent oxygen; or
    - (ii) A hazardous waste feedrate corresponding to a maximum theoretical emission concentration (MTEC) in excess of 120 µg/dscm;
  - (3) **For cadmium and lead, both—**
    - (i) Emissions in excess of 3.7 × 10−5 lbs combined emissions of cadmium and lead attributable to the hazardous waste per million Btu heat input from the hazardous waste; and
    - (ii) Emissions in excess of 43 µg/dscm, combined emissions, corrected to 7 percent oxygen;
  - (4) **For arsenic, beryllium, and chromium, both—**
    - (i) In excess of 3.3 × 10−5 lbs combined emissions of arsenic, beryllium, and chromium attributable to the hazardous waste per million Btu heat input from the hazardous waste;
    - (ii) Emissions in excess of 110 µg/dscm, combined emissions, corrected to 7 percent oxygen;
  - (5) **Carbon monoxide and hydrocarbons.**
    - (i) Carbon monoxide in excess of 100 parts per million by volume, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis and corrected to 7 percent oxygen. If you elect to comply with this carbon monoxide standard rather than the hydrocarbon standard under [paragraph (b)(5)(ii)](#b-5-ii) of this section, you also must document that, during the destruction and removal efficiency (DRE) test runs or their equivalent as provided by [§ 63.1206(b)(7)](/cfr/40/63.1206.md?p=b-7), hydrocarbons do not exceed 20 parts per million by volume during those runs, over an hourly rolling average (monitored continuously with a continuous emissions monitoring system), dry basis, corrected to 7 percent oxygen, and reported as propane; or
    - (ii) Hydrocarbons in excess of 20 parts per million by volume, over an hourly rolling average, dry basis, corrected to 7 percent oxygen, and reported as propane;
  - (6) Hydrogen chloride and chlorine gas in excess of 600 parts per million by volume, combined emissions, expressed as a chloride (Cl−) equivalent, dry basis and corrected to 7 percent oxygen; and
  - (7) Particulate matter emissions in excess of 0.0098 gr/dscf corrected to 7 percent oxygen.
- (c) **Destruction and removal efficiency (DRE) standard—**
  - (1) **99.99% DRE.** Except as provided in [paragraph (c)(2)](#c-2) of this section, you must achieve a destruction and removal efficiency (DRE) of 99.99% for each principal organic hazardous constituent (POHC) designated under [paragraph (c)(3)](#c-3) of this section. You must calculate DRE for each POHC from the following equation:
  - (2) **99.9999% DRE.** If you burn the dioxin-listed hazardous wastes F020, F021, F022, F023, F026, or F027 (see [§ 261.31](/cfr/40/261.31.md) of this chapter), you must achieve a destruction and removal efficiency (DRE) of 99.9999% for each POHC that you designate under [paragraph (c)(3)](#c-3) of this section. You must demonstrate this DRE performance on POHCs that are more difficult to incinerate than tetra-, penta-, and hexachlorodibenzo-dioxins and dibenzofurans. You must use the equation in [paragraph (c)(1)](#c-1) of this section to calculate DRE for each POHC. In addition, you must notify the Administrator of your intent to burn hazardous wastes F020, F021, F022, F023, F026, or F027.
  - (3) **Principal organic hazardous constituents (POHCs).**
    - (i) You must treat each POHC in the waste feed that you specify under [paragraph (c)(3)(ii)](#c-3-ii) of this section to the extent required by paragraphs [(c)(1)](#c-1) and [(2)](#c-2) of this section.
    - (ii) You must specify one or more POHCs that are representative of the most difficult to destroy organic compounds in your hazardous waste feedstream. You must base this specification on the degree of difficulty of incineration of the organic constituents in the hazardous waste and on their concentration or mass in the hazardous waste feed, considering the results of hazardous waste analyses or other data and information.
- (d) **Significant figures.** The emission limits provided by paragraphs [(a)](#a) and [(b)](#b) of this section are presented with two significant figures. Although you must perform intermediate calculations using at least five significant figures, you may round the resultant emission levels to two significant figures to document compliance.