Source: https://www.ecfr.gov/cgi-bin/text-idx?mc=true&node=sp40.17.65.d&rgn=div6
Timestamp: 2020-05-26 21:39:41
Document Index: 537286932

Matched Legal Cases: ['art 65', '§65', '§65', '§65', '§65', '§65', '§65', '§65', 'art 65', 'art 65', 'art 65', '§65', '§65', '§65', '§65', '§65', 'art 60', 'art 63', 'art 63', '§65', 'art 60', 'art 60', 'art 60', 'art 63', 'art 60', 'art 60', 'art 60', 'art 60', '§65', 'art 60', '§65', 'art 60', '§65', 'art 60', 'art 60', 'art 63', '§65', '§65', 'art 60', 'art 63', 'art 60', 'art 63', '§65', '§65', '§65', '§65', '§65', '§65', '§65', '§65', '§65', '§65', '§65', '§65', '§65', '§65', '§65', '§65', '§65', '§65', '§65', '§65', '§65', '§65', '§65', '§65', '§65', 'art 60', 'art 60', 'art 60', 'art 63', 'art 63', 'art 60', 'art.\n2', 'art 63', 'art 65', '§65', 'art 65']

Title 40 → Chapter I → Subchapter C → Part 65 → Subpart D
§65.60 Applicability.
§65.61 Definitions.
§65.62 Process vent group determination.
§65.64 Group determination procedures.
§65.65 Monitoring.
§65.66 Recordkeeping provisions.
§§65.68-65.79 [Reserved]
Table 1 to Subpart D of Part 65—Concentration for Group Determination
Table 2 to Subpart D of Part 65—TRE Parameters for NSPS Referencing Subparts
Table 3 to Subpart D of Part 65—TRE Parameters for HON Referencing Subparts
(a) Group status. The owner or operator of a process vent shall determine the group status (i.e., Group 1, Group 2A, or Group 2B) for each process vent. Group 1 process vents require control, and Group 2A and 2B process vents do not. Group 2A process vents require parameter monitoring, and Group 2B process vents do not. The owner or operator shall report the group status of each process vent as specified in §65.5(c)(2).
(b) Group 1. A process vent is considered Group 1 if it meets at least one of the following specifications:
(1) The owner or operator designates the process vent as Group 1.
(2) At representative operating conditions expected to yield the lowest TRE index value for the process vent, the TRE index value is less than or equal to 1.0, the flow rate is greater than or equal to 0.011 standard cubic meter per minute (0.40 standard cubic foot per minute), and the concentration is greater than or equal to the applicable criterion in table 1 of this subpart. Procedures for determining the TRE index value, flow rate, and concentration are specified in §65.64.
(c) Group 2A. A process vent is considered Group 2A if, at representative operating conditions expected to yield the lowest TRE index value, it has a TRE index value of greater than 1.0 and less than or equal to 4.0, a flow rate of greater than or equal to 0.011 standard cubic meter per minute (0.40 standard cubic foot per minute), and a concentration greater than or equal to the applicable table 1 criterion. Procedures for determining the TRE index value, flow rate, and concentration are specified in §65.64.
(d) Group 2B. A process vent is considered Group 2B if, at representative operating conditions expected to yield the lowest TRE index value, it has a TRE index value of greater than 4.0; or a flow rate of less than 0.011 standard cubic meter per minute (0.40 standard cubic foot per minute); or a concentration less than the applicable criterion in table 1 of this subpart. Procedures for determining the TRE index value, flow rate, and concentration are specified in §65.64.
(a) General. The provisions of this section provide calculation and measurement methods for parameters that are used to determine group status.
(b)(1) Sampling site. For purposes of determining TOC or HAP concentration, process vent volumetric flow rate, heating value, or TRE index value as specified under paragraph (c), (d), (e), (f), or (h) of this section, the sampling site shall be located after the last recovery device (if any recovery devices are present) but prior to the inlet of any control device that is present, and prior to release to the atmosphere.
(2) Sampling site when a halogen reduction device is used prior to a combustion device. An owner or operator using a scrubber or other halogen reduction device to reduce the process vent halogen atom mass emission rate to less than 0.45 kilogram per hour (0.99 pound per hour) prior to a combustion control device in compliance with §65.63(b)(2) shall determine the halogen atom mass emission rate prior to the combustor and after the scrubber or other halogen reduction device according to the procedures in paragraph (g) of this section.
(3) Sampling site selection method. Method 1 or 1A of appendix A of 40 CFR part 60, as appropriate, shall be used for selection of the sampling site. No traverse site selection method is needed for process vents smaller than 0.10 meter (4 inches) in nominal inside diameter.
(c) TOC or HAP concentration. The TOC or HAP concentrations used for TRE index value calculations in paragraph (h) of this section shall be determined based on paragraph (c)(1) or (i) of this section, or any other method or data that have been validated according to the protocol in Method 301 of appendix A of 40 CFR part 63. For concentrations needed for comparison with the appropriate concentration in table 1 of this subpart, TOC or HAP concentration shall be determined based on paragraph (c)(1), (c)(2), or (i) of this section or any other method or data that have been validated according to the protocol in Method 301 of appendix A of 40 CFR part 63. The owner or operator shall record the TOC or HAP concentration as specified in §65.66(c).
(1) Method 18. The procedures specified in paragraph (c)(1)(i) and (ii) of this section shall be used to calculate parts per million by volume concentration using Method 18 of appendix A of 40 CFR part 60.
(i) The minimum sampling time for each run shall be 1 hour in which either an integrated sample or four grab samples shall be taken. If grab sampling is used, then the samples shall be taken at approximately equal intervals in time, such as 15-minute intervals during the run.
(ii) The concentration of either TOC (minus methane and ethane) or organic HAP emissions shall be calculated using the following two procedures, as applicable.
(A) The TOC concentration (CTOC) is the sum of the concentrations of the individual components and shall be computed for each run using Equation 64-1 of this section:
(B) The total organic HAP concentration (CHAP) shall be computed according to the equation in paragraph (c)(1)(ii)(A) of this section except that only the organic HAP species shall be summed.
(2) Method 25A. The following procedures shall be used to calculate parts per million by volume concentration using Method 25A of appendix A of 40 CFR part 60:
(i) Method 25A of appendix A of 40 CFR part 60 shall be used only if a single organic compound of regulated material is greater than 50 percent of total organic HAP or TOC, by volume, in the process vent.
(ii) The process vent composition may be determined by either process knowledge, test data collected using an appropriate EPA method, or a method or data validated according to the protocol in Method 301 of appendix A of 40 CFR part 63. Examples of information that could constitute process knowledge include calculations based on material balances, process stoichiometry, or previous test results provided the results are still relevant to the current process vent conditions.
(iii) The organic compound used as the calibration gas for Method 25A of appendix A of 40 CFR part 60 shall be the single organic compound of regulated material present at greater than 50 percent of the total organic HAP or TOC by volume.
(iv) The span value for Method 25A of appendix A of 40 CFR part 60 shall be equal to the appropriate concentration value in table 1 to this subpart.
(v) Use of Method 25A of appendix A of 40 CFR part 60 is acceptable if the response from the high-level calibration gas is at least 20 times the standard deviation of the response from the zero calibration gas when the instrument is zeroed on the most sensitive scale.
(vi) The owner or operator shall demonstrate that the concentration of TOC including methane and ethane measured by Method 25A of appendix A of 40 CFR part 60 is below one-half the appropriate value in table 1 to this subpart to be considered a Group 2B vent with an organic HAP or TOC concentration below the appropriate value in table 1 to this subpart.
(d) Volumetric flow rate. The process vent volumetric flow rate (QS) in standard cubic meters per minute at 20 °C (68 °F) shall be determined as specified in paragraphs (d)(1) and (2) of this section and shall be recorded as specified in §65.66(b):
(1) Use Method 2, 2A, 2C, or 2D of appendix A of 40 CFR part 60, as appropriate. If the process vent tested passes through a final steam jet ejector and is not condensed, the stream volumetric flow shall be corrected to 2.3 percent moisture; or
(2) The engineering assessment procedures in paragraph (i) of this section can be used for determining volumetric flow rates.
(e) Heating value. The net heating value shall be determined as specified in paragraphs (e)(1) and (2) of this section or by using the engineering assessment procedures in paragraph (i) of this section.
(1) The net heating value of the process vent shall be calculated using Equation 64-2 of this section:
Hj = Net heat of combustion of compound j, kilocalorie per gram-mole, based on combustion at 25 °C and 760 millimeters of mercury. The heat of combustion of process vent components shall be determined using American Society for Testing and Materials (ASTM) D2382-76 (incorporated by reference as specified in §65.13) if published values are not available or cannot be calculated.
(2) The molar composition of the process vent (Dj) shall be determined using the following methods:
(i) Method 18 of appendix A of 40 CFR part 60 to measure the concentration of each organic compound.
(ii) American Society for Testing and Materials (ASTM) D1946-77 (incorporated by reference as specified in §65.13) to measure the concentration of carbon monoxide and hydrogen.
(iii) Method 4 of appendix A of 40 CFR part 60 to measure the moisture content of the stack gas.
(f) TOC or HAP emission rate. The emission rate of TOC (minus methane and ethane) (ETOC) and/or the emission rate of total organic HAP (EHAP) in the process vent as required by the TRE index value equation specified in paragraph (h) of this section, shall be calculated using Equation 64.3 of this section:
(g) Halogenated vent determination. In order to determine whether a process vent is halogenated, the mass emission rate of halogen atoms contained in organic compounds shall be calculated according to the procedures specified in paragraphs (g)(1) and (2) of this section. A process vent is considered halogenated if the mass emission rate of halogen atoms contained in the organic compounds is equal to or greater than 0.45 kilogram per hour (0.99 pound per hour).
(1) The process vent concentration of each organic compound containing halogen atoms (parts per million by volume, by compound) shall be determined based on one of the following procedures:
(i) Process knowledge that no halogen or hydrogen halides are present in the process vent; or
(ii) Applicable engineering assessment as discussed in paragraph (i)(3) of this section; or
(iii) Concentration of organic compounds containing halogens measured by Method 18 of appendix A of 40 CFR part 60; or
(iv) Any other method or data that have been validated according to the applicable procedures in Method 301 of appendix A of 40 CFR part 63.
(2) Equation 64-4 of this section shall be used to calculate the mass emission rate of halogen atoms:
(h) TRE index value. The owner or operator shall calculate the TRE index value of the process vent using the equations and procedures specified in paragraphs (h)(1) through (3) of this section, as applicable, and shall maintain the records specified in §65.66(a) or §65.66(d)(4), as applicable.
(1) TRE index value equation. Equation 64-5 of this section shall be used to calculate the TRE index:
(2) Nonhalogenated process vents. The owner or operator of a nonhalogenated process vent shall calculate the TRE index value using either one of the following procedures, as applicable:
(i) TRE calculations: Part 60 regulated sources. Use the parameters in table 2 to this subpart and calculate the TRE index value twice, once using the appropriate equation (depending on the heating value and flow rate of the process vent) in equations 15 through 30 and once using the appropriate equation (depending on the heating value of the process vent) in equations 31 and 32. Select the lowest TRE index value.
(ii) TRE calculations: Part 63 regulated sources. Use the equation and parameters in table 3 to this subpart and calculate the TRE index value using equations 34, 35, and 36 for process vents at existing sources; or equations 38, 39, and 40 for process vents at new sources. Select the lowest TRE index value.
(3) Halogenated process vents. The owner or operator of a halogenated process vent stream as determined according to procedures specified in paragraph (g) of this section shall calculate the TRE index value using either one of the following procedures, as applicable:
(i) TRE Calculations: Part 60 regulated sources. Use the parameters in table 2 to this subpart and calculate the TRE index value using the appropriate equation chosen from equations 1 through 14 depending on the heating value and flow rate of the process vent.
(ii) TRE calculations: Part 63 regulated sources. Use the appropriate parameters in table 3 to this subpart and calculate the TRE index value using equation 33 or 37 depending on whether the process vent is at a new or existing source.
(i) Engineering assessment. For purposes of TRE index value determination, engineering assessment may be used to determine process vent flow rate, net heating value, TOC emission rate, and total organic HAP emission rate for the representative operating condition expected to yield the lowest TRE index value. Engineering assessments shall meet the requirements of paragraphs (i)(1) through (4) of this section. If process vent flow rate or process vent organic HAP or TOC concentration is being determined for comparison with the 0.011 scmm (0.40 standard cubic foot) flow rate or the applicable concentration value in table 1 to this subpart, engineering assessment may be used to determine the flow rate or concentration for the representative operating condition expected to yield the highest flow rate or concentration.
(1) If the TRE index value calculated using such engineering assessment and the TRE index value equation in paragraph (h) of this section is greater than 4.0, then the owner or operator is not required to perform the measurements specified in paragraphs (c) through (g) of this section.
(2) If the TRE index value calculated using such engineering assessment and the TRE index value equation in paragraph (h) of this section is less than or equal to 4.0, then the owner or operator is required either to perform the measurements specified in paragraphs (c) through (g) of this section for group determination or to consider the process vent a Group 1 process vent and comply with the requirement (or standard) specified in §65.63(a) and, if applicable, §65.63(b).
(3) Engineering assessment includes, but is not limited to, the examples specified in paragraphs (i)(3)(i) through (iv) of this section.
(i) Previous test results provided the tests are representative of current operating practices at the process unit.
(ii) Bench-scale or pilot-scale test data representative of the process under representative operating conditions.
(iii) Maximum flow rate, TOC emission rate, organic HAP emission rate, organic HAP or TOC concentration, or net heating value limit specified or implied within a permit limit applicable to the process vent.
(iv) Design analysis based on accepted chemical engineering principles, measurable process parameters, or physical or chemical laws or properties. Examples of analytical methods include, but are not limited to, the following examples:
(A) Use of material balances based on process stoichiometry to estimate maximum TOC or organic HAP concentrations;
(B) Estimation of maximum flow rate based on physical equipment design such as pump or blower capacities;
(C) Estimation of TOC or organic HAP concentrations based on saturation conditions; and
(D) Estimation of maximum expected net heating value based on the stream concentration of each organic compound or, alternatively, as if all TOC in the stream were the compound with the highest heating value.
(4) All data, assumptions, and procedures used in the engineering assessment shall be documented. The owner or operator shall maintain the records specified in §65.66(a), (b), (c), or (d), as applicable.
(a) An owner or operator of a Group 2A process vent maintaining a TRE index value greater than 1.0 without a recovery device shall monitor based on the approved plan as specified in §65.63(d).
(b) As required in §65.63(a) and (c), an owner or operator of a Group 2A process vent maintaining a TRE index value greater than 1.0 with a recovery device or a Group 1 process vent shall comply with §65.142(b).
(a) TRE index value records. The owner or operator shall maintain records of measurements, engineering assessments, and calculations performed to determine the TRE index value of the process vent according to the procedures of §65.64(h), including those records associated with halogen vent stream determination. Documentation of engineering assessments shall include all data, assumptions, and procedures used for the engineering assessments, as specified in §65.64(i). As specified in §65.67(a), the owner or operator shall include this information in the Initial Compliance Status Report.
(b) Flow rate records. Each owner or operator who elects to demonstrate that a process vent is Group 2B based on a flow rate less than 0.011 standard cubic meter per minute (0.40 standard cubic foot per minute) shall record the flow rate as measured using the sampling site and flow rate determination procedures specified in §65.64(b) and (d) or determined through engineering assessment as specified in §65.64(i). As specified in §65.67(a), the owner or operator shall include this information in the Initial Compliance Status Report.
(c) Concentration records. Each owner or operator who elects to demonstrate that a process vent is Group 2B based on a concentration less than the applicable criteria in table 1 to this subpart shall record the organic HAP or TOC concentration as measurement using the sampling site and HAP or TOC concentration determination procedures specified in §65.64(b) and (c) or determined through engineering assessment as specified in §65.64(i). As specified in §65.67(a), the owner or operator shall include this information in the Initial Compliance Status Report.
(d) Process change records. The owner or operator shall keep up-to-date, readily accessible records as specified in the following and shall report this information as specified in §65.67(b):
(1) If the process vent is Group 2B on the basis of flow rate being less than 0.011 scmm (0.40 standard cubic foot), then the owner or operator shall keep records of any process changes as defined in §65.63(f) that increase the process vent flow rate and any recalculation or measurement of the flow rate pursuant to §65.63(f).
(2) If the process vent is Group 2B on the basis of organic HAP or TOC concentration being less than the applicable value in table 1 to this subpart, then the owner or operator shall keep records of any process changes as defined in §65.63(f) that increase the organic HAP or TOC concentration of the process vent and any recalculation or measurement of the concentration pursuant to §65.63(f).
(3) If the process vent is Group 2A or Group 2B on the basis of the TRE index value being greater than 1.0, then the owner or operator shall keep records of any process changes as defined in §65.63(f) and any recalculation of the TRE index value pursuant to §65.63(f).
(4) As a result of a process change, if a process vent that was Group 2B on any basis becomes a Group 2B process vent only on the basis of having a TRE greater than 4.0, then the owner or operator shall keep records of the TRE index value determination performed according to the sample site and TRE index value determination procedures of §65.64(b)(1) and (h) or determined through engineering assessment as specified in §65.64(i).
(e) Other Group 2A records. An owner or operator of a Group 2A process vent maintaining a TRE index value greater than 1.0 without a recovery device shall record the parameters monitored based on the approved plan as specified in §65.63(d).
Referencing subpart
Subpart III of Part 60 NA.
Subpart NNN of Part 60 300 ppmv of TOC.
Subpart RRR of Part 60 300 ppmv of TOC.
Subpart G of Part 63 50 ppmv of HAP2.
1The 50 ppm HAP concentration cutoff only applies to 40 CFR part 63, subpart G sources. Process vents subject to only 40 CFR part 60, subparts RRR or NNN are eligible for the 300 ppm TOC cutoff. There is no concentration cutoff for subpart III sources. The process vent provisions of subpart DDD are not consolidated under this subpart.
2For process vents subject to subpart G of 40 CFR part 63, the owner or operator may measure HAP or TOC concentration with regard to the low concentration exemption provisions of this part.
Table 2 to Subpart D of Part 65—TRE Parameters for NSPS Referencing Subpartsa
(MJ/scm)b
Vent stream flow rate (scm/min)c
Values of terms for TRE equation: TRE = A * [ B + C + D + E + F ]
Yes 0≤H ≤3.5 Q <14.2 1/ETOC 30.96334 0 0 −0.13064QH 0 1
14.2≤Q ≤18.8 1/ETOC 19.18370 0.27580Q 0.757620Q0.88 −0.13064QH 0.01025Q0.5 2
18.8<Q ≤699 1/ETOC 20.00563 0.27580Q 0.303870Q0.88 −0.13064QH 0.01025Q0.5 3
699<Q ≤1400 1/ETOC 39.87022 0.29973Q 0.303870Q0.88 −0.13064QH 0.01449Q0.5 4
1400<Q ≤2100 1/ETOC 59.73481 0.31467Q 0.303870Q0.88 −0.13064QH 0.01775Q0.5 5
2100<Q ≤2800 1/ETOC 79.59941 0.32572Q 0.303870Q0.88 −0.13064QH 0.02049Q0.5 6
2800<Q ≤3500 1/ETOC 99.46400 0.33456Q 0.303870Q0.88 −0.13064QH 0.02291Q0.5 7
H >3.5 Q <14.2 1/ETOC 20.61052 0 0 0 0 8
14.2≤Q ≤18.8 1/ETOC 18.84466 0.26742Q −0.200440Q0.88 0 0.01025Q0.5 9
18.8<Q ≤699 1/ETOC 19.66658 0.26742Q −0.253320Q0.88 0 0.01025Q0.5 10
699<Q ≤1400 1/ETOC 39.19213 0.29062Q −0.253320Q0.88 0 0.01449Q0.5 11
1400<Q ≤2100 1/ETOC 58.71768 0.30511Q −0.253320Q0.88 0 0.01775Q0.5 12
2100<Q ≤2800 1/ETOC 78.24323 0.31582Q −0.253320Q0.88 0 0.02049Q0.5 13
2800<Q ≤3500 1/ETOC 97.76879 0.32439Q −0.253320Q0.88 0 0.02291Q0.5 14
No 0≤H ≤0.48 Q <14.2 1/ETOC 11.01250 0 0 −0.17109QH 0 15
14.2≤Q ≤1340 1/ETOC 8.54245 0.10555Q 0.090300Q0.88 −0.17109QH 0.01025Q0.5 16
1340<Q ≤2690 1/ETOC 16.94386 0.11470Q 0.090300Q0.88 −0.17109QH 0.01449Q0.5 17
2690<Q ≤4040 1/ETOC 25.34528 0.12042Q 0.090300Q0.88 −0.17109QH 0.01775Q0.5 18
0.48<H ≤1.9 Q <14.2 1/ETOC 13.45630 0 0 −0.16181QH 0 19
14.2≤Q ≤1340 1/ETOC 9.25233 0.06105Q 0.319370Q0.88 −0.16181QH1 0.01025Q0.5 20
1340<Q ≤2690 1/ETOC 18.36363 0.06635Q 0.319370Q0.88 −0.16181QH 0.01449Q0.5 21
2690<Q ≤4040 1/ETOC 27.47492 0.06965Q 0.319370Q0.88 −0.16181QH 0.01775Q0.5 22
1.9<H ≤3.6 Q <14.2 1/ETOC 7.96988 0 0 0 0 23
14.2≤Q ≤1180 1/ETOC 6.67868 0.06943Q 0.025820Q0.88 0 0.01025Q0.5 24
1180<Q ≤2370 1/ETOC 13.21633 0.07546Q 0.025820Q0.88 0 0.01449Q0.5 25
2370<Q ≤3550 1/ETOC 19.75398 0.07922Q 0.025820Q0.88 0 0.01775Q0.5 26
H >3.6 Q <14.2 1/ETOC 6.67868 0 0.02220Q0.88H0.88 −0.00707QH 0.02036H0.5 27
Q ≥14.2 and
14.2≤Q*(H/3.6) ≤1180 1/ETOC 6.67868 0 0.02220Q0.88H0.88 −0.00707QH 0.00540Q0.5H0.5 28
1180<Q*(H/3.6) ≤2370 1/ETOC 13.21633 0 0.02412Q0.88H0.88 −0.00707QH 0.00764Q0.5H0.5 29
2370<Q*(H/3.6) ≤3550 1/ETOC 19.75398 0 0.02533Q0.88H0.88 −0.00707QH 0.00936Q0.5H0.5 30
No 0≤H <11.2 All 1/ETOC 2.08 2.25Q 0.288Q0.8 −0.193QH −0.0051ETOC 31
H ≥11.2 All 1/ETOC 2.08 0.309Q 0.0619Q0.8 −0.0043QH −0.0043ETOC 32
aUse according to procedures outlined in §65.64(h).
bMJ/scm = mega Joules per standard cubic meter.
cscm/min = standard cubic meters per minute.
Table 3 to Subpart D of Part 65—TRE Parameters for HON Referencing Subpartsa
Existing Yes 1/EHAP 3.995 0.05200Q 0 −0.001769H 0.0009700ETOC 33
No 1/EHAP 1.935 0.3660Q 0 −0.007687H −0.000733ETOC 34
1/EHAP 1.492 0.06267Q 0 0.03177H −0.001159ETOC 35
1/EHAP 2.519 0.01183Q 0 0.01300H 0.04790ETOC 36
New Yes 1/EHAP 1.0895 0.01417Q 0 −0.000482H 0.0002645ETOC 37
No 1/EHAP 0.5276 0.0998Q 0 −0.002096H −0.0002000ETOC 38
1/EHAP 0.4068 0.0171Q 0 0.008664H −0.000316ETOC 39
1/EHAP 0.6868 0.00321Q 0 0.003546H 0.01306ETOC 40