4)  All system components (excluding sample conditioning components, if used) must maintain the sample temperature above the moisture dew point. Ensure minimal contact between any condensate and the sample gas. Section 6.2 provides example equipment specifications for a NOx measurement system. Figure 7E-1 is a diagram of an example dry-basis measurement system that is likely to meet the method requirements and is provided as guidance. For wet-basis systems, you may use alternative equipment and supplies as needed (some of which are described in Section 6.2), provided that the measurement system meets the applicable performance specifications of this method.
* * * * *
	7.1.1  High-Level Gas.  This concentration is chosen to set the calibration span as defined in Section 3.4. Choose this high-level concentration so that emission measurements will be within 20 to 100 percent of this concentration.
* * * * *
	8.1.2  Determination of Stratification. Perform a stratification test at each test site to determine the appropriate number of sample traverse points. If testing for multiple pollutants or diluents at the same site, a stratification test using only one pollutant or diluent satisfies this requirement. A stratification test is not required for small stacks that are less than 4 inches in diameter. To test for stratification, use a probe of appropriate length to measure the NOx (or pollutant of interest) concentration at 12 traverse points located according to Table 1-1 or Table 1-2 of Method 1. Alternatively, you may measure at three points on a line passing through the centroidal area. Space the three points at 16.7, 50.0, and 83.3 percent of the measurement line. Sample for a minimum of twice the system response time (see Section 8.2.6) at each traverse point. Calculate the individual point and mean NOx concentrations. If the concentration at each traverse point differs from the mean concentration for all traverse points by no more than: (a) +-5.0 percent of the mean concentration; or (b) +-0.5 ppm (whichever is less restrictive), the gas stream is considered unstratified and you may collect samples from a single point that most closely matches the mean. If the 5.0 percent or 0.5 ppm criterion is not met, but the concentration at each traverse point differs from the mean concentration for all traverse points by no more than: (a) +-10.0 percent of the mean; or (b) +-1.0 ppm (whichever is less restrictive), the gas stream is considered to be minimally stratified, and you may take samples from three points. Space the three points at 16.7, 50.0, and 83.3 percent of the measurement line. Alternatively, if a 12 point stratification test was performed and the emissions shown to be minimally stratified (all points within +- 10.0 percent of their mean or within +-1.0 ppm), and if the stack diameter (or equivalent diameter for a rectangular stack or duct) is greater than 2.4 meters (7.8 ft), then you may use 3-point sampling and locate the three points along the measurement line exhibiting the highest average concentration during the stratification test at 0.4, 1.2, and 2.0 meters from the stack or duct wall. If the gas stream is found to be stratified because the 10.0 percent or 1.0 ppm criterion for a 3-point test is not met, locate 12 traverse points for the test in accordance with Table 1-1 or Table 1-2 of Method 1. This stratification test may not be meaningful at sources with temporally varying emissions or where emission concentrations are low. In these cases, the stratification test is not required.
* * * * *
      8.2.5  Initial System Bias and System Calibration Error Checks.  Before sampling begins, determine whether the high-level or mid-level calibration gas best approximates the emissions and use it as the upscale gas. Introduce the upscale gas at the probe upstream of all sample conditioning components in system calibration mode. Record the time it takes for the measured concentration to increase to a value that is within 95 percent or 0.5 ppm (whichever is less restrictive) of a stable response for both the low-level and upscale gases. Continue to observe the gas concentration reading until it has reached a final, stable value. Record this value on a form similar to Table 7E - 2.
* * * * *
      16.2.2  Bag Procedure. Perform the analyzer calibration error test to document the calibration (both NO and NOX modes, as applicable). Fill a Tedlar or equivalent bag approximately half full with either ambient air, pure oxygen, or an oxygen standard gas with at least 19.5 percent by volume oxygen content. Fill the remainder of the bag with mid- to high-level NO in N2 (or other appropriate concentration) calibration gas. (Note that the concentration of the NO standard should be sufficiently high enough for the diluted concentration to be easily and accurately measured on the scale used. The size of the bag should be large enough to accommodate the procedure and time required. Contact the bag manufacturer for guidance on the applicability of Tedlar equivalent materials for NO.)
* * * * *
         34. In Method 8 of Appendix A-4 by revising Sections 11.2.1 and 11.2.2, by revising two definitions in Section 12.1, and by revising Figure 8-1 as follows:
Method 8  -  Determination of Sulfuric Acid Mist and Sulfur Dioxide Emissions From Stationary Sources
* * * * *
      11.2.1  Container No. 1. Shake the container holding the isopropanol solution and the filter. If the filter breaks up, allow the fragments to settle for a few minutes before removing a sample aliquot. For determination of SO3/H2SO4 concentration, pipette a 10-ml aliquot of this solution into a 250-ml Erlenmeyer flask, add 2 to 4 drops of thorin indicator, and titrate to a pink endpoint using 0.0100 N barium standard solution. Repeat the titration with a second aliquot of sample, and average the titration values. Replicate titrations must agree within 1 percent or 0.2 ml, whichever is greater.
      11.2.2  Container No. 2. Thoroughly mix the solution in the container holding the contents of the second and third impingers. For determination of SO2 concentration, pipette a 100-ml aliquot of sample into a 250-ml Erlenmeyer flask. Add 40 ml of isopropanol, 2 to 4 drops of thorin indicator, and titrate to a pink endpoint using 0.0100 N barium standard solution. Repeat the titration with a second aliquot of sample, and average the titration values. Replicate titrations must agree within 1 percent or 0.2 ml, whichever is greater.
* * * * *
      12.1 * * *
      Va = Volume of sample aliquot titrated, 10 ml for H2SO4 and 100 ml for SO2.
      Vsoln = Total volume of solution in which the sample is contained, 1000 ml for the SO2 sample and 250 ml for the H2SO4 sample.
* * * * *

                  Figure 8-1.  Sulfuric Acid Sampling Train.
* * * * *
         35. In Method 10 of Appendix A-4 by revising Sections 6.2.5 and 8.4.2 as follows:
Method 10  -  Determination of Carbon Monoxide Emissions From Stationary Sources
* * * * *
      6.2.5  Flexible Bag. Tedlar, or equivalent, with a capacity of 60 to 90 liters (2 to 3 ft[3]). (Contact the bag manufacturer for guidance on the applicability of Tedlar equivalent materials for the compound of interest.) Leak-test the bag in the laboratory before using by evacuating with a pump followed by a dry gas meter. When the evacuation is complete, there should be no flow through the meter. Gas tanks may be used in place of bags if the samples are analyzed within one week.
* * * * *
      8.4.2  Integrated Sampling. Evacuate the flexible bag. Set up the equipment as shown in Figure 10 - 1 with the bag disconnected. Place the probe in the stack and purge the sampling line. Connect the bag, making sure that all connections are leak-free. Sample at a rate proportional to the stack velocity. If needed, the CO2 content of the gas may be determined by using the Method 3 integrated sample procedures, or by weighing an ascarite CO2 removal tube used and computing CO2 concentration from the gas volume sampled and the weight gain of the tube. Data may be recorded on a form similar to Table 10 - 1. If a tank is used for sample collection, follow procedures similar to those in Sections 8.1.2, 8.2.3, 8.3, and 12.4 of Method 25 as appropriate to prepare the tank, conduct the sampling, and correct the measured sample concentration.
* * * * *
         25. In Method 10A of Appendix A-4 by revising Sections 2.0, 8.2.1, 8.2.3, 11.1, 11.2, and 13.5 and by revising the narrative in Section 12.3 as follows:
Method 10A  --  Determination of Carbon Monoxide Emissions in Certifying Continuous Emission Monitoring Systems at Petroleum Refineries
* * * * *
2.0  Summary of Method
      An integrated gas sample is extracted from the stack, passed through an alkaline permanganate solution to remove sulfur oxides and nitrogen oxides, and collected in a Tedlar or equivalent bag. (Contact the bag manufacturer for guidance on the applicability of Tedlar equivalent materials for the compound of interest.) The CO concentration in the sample is measured spectrophotometrically using the reaction of CO with p-sulfaminobenzoic acid.
* * * * *
      8.2.1  Evacuate the  bag completely using a vacuum pump. Assemble the apparatus as shown in Figure 10A - 1. Loosely pack glass wool in the tip of the probe. Place 400 ml of alkaline permanganate solution in the first two impingers and 250 ml in the third. Connect the pump to the third impinger, and follow this with the surge tank, rate meter, and 3-way valve. Do not connect the  bag to the system at this time.
* * * * *
      8.2.3  Purge the system with sample gas by inserting the probe into the stack and drawing the sample gas through the system at 300 ml/min +-10 percent for 5 minutes. Connect the evacuated bag to the system, record the starting time, and sample at a rate of 300 ml/min for 30 minutes, or until the bag is nearly full. Record the sampling time, the barometric pressure, and the ambient temperature. Purge the system as described above immediately before each sample.
* * * * *
      11.1  Assemble the system shown in Figure 10A - 3, and record the information required in Table 10A - 1 as it is obtained. Pipet 10.0 ml of the colorimetric reagent into each gas reaction bulb, and attach the bulbs to the system. Open the stopcocks to the reaction bulbs, but leave the valve to the bag closed. Turn on the pump, fully open the coarse-adjust flow valve, and slowly open the fine-adjust valve until the pressure is reduced to at least 40 mm Hg. Now close the coarse adjust valve, and observe the manometer to be certain that the system is leak-free. Wait a minimum of 2 minutes. If the pressure has increased less than 1 mm Hg, proceed as described below. If a leak is present, find and correct it before proceeding further.
	11.2  Record the vacuum pressure (Pv) to the nearest 1 mm Hg, and close the reaction bulb stopcocks. Open the bag valve, and allow the system to come to atmospheric pressure. Close the bag valve, open the pump coarse adjust valve, and evacuate the system again. Repeat this fill/evacuation procedure at least twice to flush the manifold completely. Close the pump coarse adjust valve, open the bag valve, and let the system fill to atmospheric pressure. Open the stopcocks to the reaction bulbs, and let the entire system come to atmospheric pressure. Close the bulb stopcocks, remove the bulbs, record the room temperature and barometric pressure (Pbar, to nearest mm Hg), and place the bulbs on the shaker table with their main axis either parallel to or perpendicular to the plane of the table top. Purge the bulb-filling system with ambient air for several minutes between samples. Shake the samples for exactly 2 hours.
* * * * *
      12.3  CO Concentration in the Bag. Calculate Cb using Equations 10A - 2 and 10A - 3. If condensate is visible in the bag, calculate Bw using Table 10A - 2 and the temperature and barometric pressure in the analysis room. If condensate is not visible, calculate Bw using the temperature and barometric pressure at the sampling site.  * * *
* * * * *
      13.5  Stability. The individual components of the colorimetric reagent are stable for at least one month. The colorimetric reagent must be used within two days after preparation to avoid excessive blank correction. The samples in the bag should be stable for at least one week if the bags are leak-free.
* * * * *
         25. In Method 10B of Appendix A-4 by revising Sections 2.1 and 6.2.3 and by revising the narrative in Section 12.2 as follows:
Method 10B  --  Determination of Carbon Monoxide Emissions From Stationary Sources
* * * * *
      2.1   An integrated gas sample is extracted from the sampling point, passed through a conditioning system to remove interferences, and collected in a Tedlar or equivalent bag. (Contact the bag manufacturer for guidance on the applicability of Tedlar equivalent materials for the compound of interest.) The CO is separated from the sample by gas chromatography (GC) and catalytically reduced to methane (CH4) which is determined by flame ionization detection (FID). The analytical portion of this method is identical to applicable sections in Method 25 detailing CO measurement.
* * * * *
      6.2.3  Sample Injection System. Same as in Method 25, Section <IP_ADDRESS>, equipped to accept a sample line from the bag.
* * * * *
      12.2  CO Concentration in the Bag. Calculate Cb using Equations 10B - 1 and 10B - 2. If condensate is visible in the bag, calculate Bw using Table 10A - 2 of Method 10A and the temperature and barometric pressure in the analysis room. If condensate is not visible, calculate Bw using the temperature and barometric pressure at the sampling site. * * *
* * * * *
         25. In Method 11 of Appendix A-5 by revising Sections 8.5 and 10.1.2 as follows:
Method 11  --  Determination of Hydrogen Sulfide Content of Fuel Gas Streams in Petroleum Refineries
* * * * *
      8.5  Sample for at least 10 minutes. At the end of the sampling time, close the sampling valve, and record the final volume and temperature readings. Conduct a leak-check as described in Section 8.2. A yellow color in the final cadmium sulfate impinger indicates depletion of the absorbing solution. An additional cadmium sulfate impinger should be added for subsequent samples and the sample with yellow color in the final impinger should be voided.
* * * * *
      10.1.2  Temperature Sensors. Calibrate against mercury-in-glass thermometers. An alternative mercury-free thermometer may be used if the thermometer is at a minimum equivalent in terms of performance or suitably effective for the specific temperature measurement application.
* * * * *
         26. In Method 12 of Appendix A-5 by revising Section 16.1 and adding Sections 16.4, 16.4.1, and 16.4.2 as follows:
Method 12  -  Determination of Inorganic Lead Emissions From Stationary Sources
* * * * *
	16.1  Simultaneous Determination of Particulate Matter and Lead Emissions. Method 12 may be used to simultaneously determine Pb provided: (1) acetone is used to remove particulate from the probe and inside of the filter holder as specified by Method 5, (2) 0.1 N HNO3 is used in the impingers, (3) a glass fiber filter with a low Pb background is used, and (4) the entire train contents, including the impingers, are treated and analyzed for Pb as described in Sections 8.0 and 11.0 of this method.
* * * * *
      16.4  Alternative Analyzer.  Inductively coupled plasma-atomic emission spectrometry (ICP-AES) may be used as an alternative to atomic absorption analysis provided the following conditions are met:
      16.4.1  Sample collection, sample preparation, and analytical preparation procedures are as defined in the method except as necessary for the ICP-AES application.
      16.4.2  The limit of quantitation for the ICP-AES must be demonstrated, and the sample concentrations reported should be no less than two times the limit of quantitation. The limit of quantitation is defined as ten times the standard deviation of the blank value. The standard deviation of the blank value is determined from the analysis of seven blanks. It has been reported that for mercury and those elements that form hydrides, a continuous-flow generator coupled to an ICP-AES offers detection limits comparable to cold vapor atomic absorption.
* * * * *
         27. In Method 14A of Appendix A-5 by adding a sentence to Section 10.1.1 as follows:
Method 14A  --  Determination of Total Fluoride Emissions from Selected Sources at Primary Aluminum Production Facilities
* * * * *
      10.1.1   Metering system. * * *
      Allowable tolerances for Y and ΔH@ are given in Figure 5 - 5 of Method 5 of this appendix.
* * * * *
         28. In Method 16A of Appendix A-6 by revising Section 1.2 as follows:
Method 16A  --  Determination of Total Reduced Sulfur Emissions From Stationary Sources (Impinger Technique)
* * * * *
      1.2  Applicability. This method is applicable for the determination of TRS emissions from recovery boilers, lime kilns, and smelt dissolving tanks at kraft pulp mills, reduced sulfur compounds (H2S, carbonyl sulfide, and carbon disulfide) from sulfur recovery units at onshore natural gas processing facilities, and from other sources when specified in an applicable subpart of the regulations. The flue gas must contain at least 1 percent oxygen for complete oxidation of all TRS to SO2. Note: If sources other than kraft pulp mills experience low oxygen levels in the emissions, the method results may be biased low.
* * * * *
         29. In Method 18 of Appendix A-6 by revising Sections <IP_ADDRESS>.2, <IP_ADDRESS>, <IP_ADDRESS>.2, <IP_ADDRESS>.2.2, <IP_ADDRESS>, <IP_ADDRESS>, and the titles to Figures 18-3 and 18-10 as follows:
Method 18  --  Measurement of Gaseous Organic Compound Emissions By Gas Chromatography
* * * * *
      <IP_ADDRESS>.2  Sampling Procedure. To obtain a sample, assemble the sample train as shown in Figure 18 - 9. Leak-check both the bag and the container. Connect the vacuum line from the needle valve to the Teflon sample line from the probe. Place the end of the probe at the centroid of the stack or at a point no closer to the walls than 1 m, and start the pump. Set the flow rate so that the final volume of the sample is approximately 80 percent of the bag capacity. After allowing sufficient time to purge the line several times, connect the vacuum line to the bag, and evacuate until the rotameter indicates no flow. Then position the sample and vacuum lines for sampling, and begin the actual sampling, keeping the rate proportional to the stack velocity. As a precaution, direct the gas exiting the rotameter away from sampling personnel. At the end of the sample period, shut off the pump, disconnect the sample line from the bag, and disconnect the vacuum line from the bag container. Record the source temperature, barometric pressure, ambient temperature, sampling flow rate, and initial and final sampling time on the data sheet shown in Figure 18 - 10. Protect the bag and its container from sunlight. Record the time lapsed between sample collection and analysis, and then conduct the recovery procedure in Section 8.4.2.
* * * * *
      <IP_ADDRESS>  Other Modified Bag Sampling Procedures. In the event that condensation is observed in the bag while collecting the sample and a direct interface system cannot be used, heat the bag during collection and maintain it at a suitably elevated temperature during all subsequent operations. (Note: Take care to leak-check the system prior to the dilutions so as not to create a potentially explosive atmosphere.) As an alternative, collect the sample gas, and simultaneously dilute it in the bag.
* * * * *
      <IP_ADDRESS>.2  Second Alternative Procedure. Prefill the bag with a known quantity of inert gas. Meter the inert gas into the bag according to the procedure for the preparation of gas concentration standards of volatile liquid materials (Section <IP_ADDRESS>), but eliminate the midget impinger section. Take the partly filled bag to the source, and meter the source gas into the bag through heated sampling lines and a heated flowmeter, or Teflon positive displacement pump. Verify the dilution factors before sampling each bag through dilution and analysis of gases of known concentration.
* * * * *
      <IP_ADDRESS>.2.2  Analyze the two field audit samples as described in Section 9.2 by connecting each bag containing an audit gas mixture to the sampling valve. Calculate the results; record and report the data to the audit supervisor.
* * * * *
      <IP_ADDRESS>  Flexible Bags. Tedlar or equivalent, 10- and 50-liter capacity, for preparation of standards. (Contact the bag manufacturer for guidance on the applicability of Tedlar equivalent materials for the compound of interest.)
* * * * *
      <IP_ADDRESS>  Flexible Bag Procedure. Any leak-free plastic (e.g., Tedlar, Mylar, Teflon) or plastic-coated aluminum (e.g., aluminized Mylar) bag, or equivalent, can be used to obtain the pre-survey sample. Use new bags, and leak-check them before field use. In addition, check the bag before use for contamination by filling it with nitrogen or air and analyzing the gas by GC at high sensitivity. Experience indicates that it is desirable to allow the inert gas to remain in the bag about 24 hours or longer to check for desorption of organics from the bag. Follow the leak-check and sample collection procedures given in Section 8.2.1.
* * * * *
Figure 18 - 3. Preparation of Standards in Tedlar or Tedlar-Equlivalent Bags and Calibration Curve
* * * * *
Figure 18 - 10. Field Sample Data Sheet -- Tedlar or Tedlar-Equivalent Bag Collection Method
* * * * *
         30. In Method 23 of Appendix A-7 by revising Sections 2.2.7, <IP_ADDRESS>, and 4.2.7 as follows:
Method 23  --  Determination of Polychlorinated Dibenzo-p-Dioxins and Polychlorinated Dibenzofurans From Stationary Sources
* * * * *
	2.2.7  Storage Container. Air-tight container to store silica gel.
* * * * *
	<IP_ADDRESS>  Sample Train. It is suggested that all components be maintained according to the procedure described in APTD-0576. Alternative mercury-free thermometers may be used if the thermometers are, at a minimum, equivalent in terms of performance or suitably effective for the specific temperature measurement application.
* * * * *
      4.2.7  Silica Gel. Note the color of the indicating silica gel to determine if it has been completely spent and make a mention of its condition. Transfer the silica gel from the fifth impinger to its original container and seal. If a moisture determination is made, follow the applicable procedures in sections <IP_ADDRESS> and 11.2.3 of Method 5 to handle and weigh the silica gel. If moisture is not measured, the silica gel may be disposed.
* * * * *
         31. In Method 24 of Appendix A-7 by revising Section 11.2.2 as follows:
Method 24  --  Determination of Volatile Matter Content, Water Content, Density, Volume Solids, and Weight Solids of Surface Coatings
* * * * *
      11.2.2  Volatile Content. To determine total volatile content, use the apparatus and reagents described in ASTM D2369 (incorporated by reference -- see §60.17 for the approved versions of the standard), respectively, and use the following procedures:
* * * * *
         32. In Method 25 of Appendix A-7 by revising Section 7.1.3 as follows:
Method 25  -  Determination of Total Gaseous Nonmethane Organic Emissions as Carbon
* * * * *
      7.1.3  Filters. Glass fiber filters, without organic binder, exhibiting at least 99.95 percent efficiency (<0.05 percent penetration) on 0.3 micron dioctyl phthalate smoke particles. The filter efficiency test shall be conducted in accordance with ASTM Method D2986-71, 78, or 95a (incorporated by reference  -  see §60.17). Test data from the supplier's quality control program are sufficient for this purpose.
* * * * *
         33. In Method 25C of Appendix A-7 by revising Sections 6.1 and 12.1, redesignating Equation 25C-2 in Section 12.3 as Equation 25C-3, redesignating Section 12.3 as 12.4, and adding new Sections 8.2.3 and 12.3 as follows:
Method 25C  -  Determination of Nonmethane Organic Compounds (NMOC) in MSW Landfill Gases
* * * * *
      6.1  Sample Probe. Stainless steel, with the bottom third perforated. Teflon probe liners and sampling lines are also allowed.  Non-perforated probes are allowed as long as they are withdrawn to create a gap equivalent to having the bottom third perforated. The sample probe must be capped at the bottom and must have a threaded cap with a sampling attachment at the top.  The sample probe must be long enough to go through and extend no less than 0.9 m (3 ft) below the landfill cover. If the sample probe is to be driven into the landfill, the bottom cap should be designed to facilitate driving the probe into the landfill.
* * * * *
      8.2.3  Driven Probes. Closed-point probes may be driven directly into the landfill in a single step. This method may not require backfilling if the probe is adequately sealed by its insertion. Unperforated probes that are inserted in this manner and withdrawn a distance from a detachable tip to create an open space are also acceptable.
* * * * *
      12.1  Nomenclature.
      Bw = Moisture content in the sample, fraction.
      CN2 = Measured N2concentration (by Method 3C), fraction.
      CN2Corr = Measured N2  concentration corrected for dilution, fraction.
      Ct = Calculated NMOC concentration, ppmv C equivalent.
      Ctm = Measured NMOC concentration, ppmv C equivalent.
      Pb = Barometric pressure, mm Hg.
      Pt = Gas sample tank pressure after sampling, but before pressurizing, mm Hg absolute.
      Ptf = Final gas sample tank pressure after pressurizing, mm Hg absolute.
      Pti = Gas sample tank pressure after evacuation, mm Hg absolute.
      Pw = Vapor pressure of H2O (from Table 25C - 1), mm Hg.
      r = Total number of analyzer injections of sample tank during analysis (where j=injection number, 1  *  *  * r).
      Tt = Sample tank temperature at completion of sampling, °K.
      Tti = Sample tank temperature before sampling, °K.
      Ttf = Sample tank temperature after pressurizing, °K.
* * * * *
      12.3  Measured N2 Concentration Correction.  Use the following equation to correct the measured concentration of N2 as determined by Method 3C for dilution.
      CN2Corr= PtfTtfPtTt-PtiTtiCN2     Eq.25C-2
* * * * *
         34. In Method 25D of Appendix A-7 by revising the first sentence in Section 9.1 and revising Section 11.2 as follows:
Method 25D  --  Determination of the Volatile Organic Concentration of Waste Samples
* * * * *
      9.1  Quality Control Samples. If audit samples are not available, prepare and analyze the two types of quality control samples (QCS) listed in Sections 9.1.1 and 9.1.2.  * * *
* * * * *
         35. In Method 26 of Appendix A-8 by revising Sections 6.1.1 and 8.1.2, by redesignating Section 16 as 17 and Section 17 as 18, and by adding a new Section 16 as follows:
Method 26  --  Determination of Hydrogen Halide and Halogen Emissions From Stationary Sources Non-Isokinetic Method
* * * * *
      6.1.1  Probe. Borosilicate glass, approximately 3/8-in. (9-mm) I.D. with a heating system capable of maintaining a probe gas temperature during sampling of 120 +-14 °C (248 +-25 °F) to prevent moisture condensation; or Teflon where stack probes are below 210C. If HF is a target analyte, then preconditioning of new teflon components by heating should be considered to prevent potential HF outgassing. A Teflon-glass filter in a mat configuration should be installed in the gas stream, not the filter box, to remove particulate matter from the gas stream (see Section 6.1.6).
* * * * *
      8.1.2  Adjust the probe temperature and the temperature of the filter and the stopcock (i.e., the heated area in Figure 26 - 1) to a temperature sufficient to prevent water condensation. This temperature should be greater than 120°C (248°F). The temperature should be monitored throughout a sampling run to ensure that the desired temperature is maintained. It is important to maintain a temperature around the probe and filter of greater than 120°C (248 °F) since it is extremely difficult to purge acid gases off these components. (These components are not quantitatively recovered and, hence, any collection of acid gases on these components would result in potential undereporting of these emissions. The applicable subparts may specify alternative higher temperatures.)
* * * * *
16.0  Alternative Procedures
	Method 26A.  Method 26A, which uses isokinetic sampling equipment, is an acceptable alternative to Method 26.
* * * * *
         36. In Method 29 of Appendix A-8 by redesignating Section 16 as Section 17 and redesignating Section 17 as Section 18 and by adding a new Section 16 as follows:
Method 29  -  Determination of Metals Emissions From Stationary Sources
* * * * *
16.0  Alternative Procedures
      16.1  Alternative Analyzer. Samples may also be analyzed by cold vapor atomic fluorescence spectrometry.
* * * * *
         37. In Method 30B of Appendix A-8 by revising Table 9-1 in Section 9 and revising Section 10.3 as follows:
Method 30B  --  Determination of Total Vapor Phase Mercury Emissions From Coal-Fired Combustion Sources Using Carbon Sorbent Traps
* * * * *
9.0  Quality Assurance and Quality Control
* * *
Table 9 - 1  --  Quality Assurance/Quality Control Criteria for Method 30B
QA/QC test or specification
Acceptance criteria
Frequency
Consequences if not met
Gas flow meter calibration (At 3 settings or points)
Calibration factor (Yi) at each flow rate must be within +-2% of the average value (Y)
Prior to initial use and when post-test check is not within +-5% of Y
Recalibrate at 3 points until the acceptance criteria are met.
Gas flow meter post-test calibration check (Single-point)
Calibration factor (Yi) must be within +-5% of the Y value from the most recent 3-point calibration
After each field test. For mass flow meters, must be done on-site, using stack gas
Recalibrate gas flow meter at 3 points to determine a new value of Y. For mass flow meters, must be done on-site, using stack gas. Apply the new Y value to the field test data.
Temperature sensor calibration
Absolute temperature measures by sensor within +-1.5% of a reference sensor
Prior to initial use and before each test thereafter
Recalibrate; sensor may not be used until specification is met.
Barometer calibration
Absolute pressure measured by instrument within +-10 mm Hg of reading with a mercury barometer or NIST traceable barometer
Prior to initial use and before each test thereafter
Recalibrate; instrument may not be used until specification is met.
Pre-test leak check
<=4% of target sampling rate
Prior to sampling
Sampling shall not commence until the leak check is passed.
Post-test leak check
<=4% of average sampling rate
After sampling
Sample invalidated.*
Analytical matrix interference test (wet chemical analysis, only)
Establish minimum dilution (if any) needed to eliminate sorbent matrix interferences
Prior to analyzing any field samples; repeat for each type of sorbent used
Field sample results not validated.
Analytical bias test
Average recovery between 90% and 110% for Hg[0]and HgCl2at each of the 2 spike concentration levels
Prior to analyzing field samples and prior to use of new sorbent media
Field samples shall not be analyzed until the percent recovery criteria has been met.
Multipoint analyzer calibration
Each analyzer reading within +-10% of true value and r[2]>=0.99
On the day of analysis, before analyzing any samples
Recalibrate until successful.
Analysis of independent calibration standard
Within +-10% of true value
Following daily calibration, prior to analyzing field samples
Recalibrate and repeat independent standard analysis until successful.
Analysis of continuing calibration verification standard (CCVS)
Within +-10% of true value
Following daily calibration, after analyzing <=10 field samples, and at end of each set of analyses
Recalibrate and repeat independent standard analysis, reanalyze samples until successful, if possible; for destructive techniques, samples invalidated.
Test run total sample volume
Within +-20% of total volume sampled during field recovery test
Each individual sample
Sample invalidated.
Sorbent trap section 2 breakthrough
<=10% of section 1 Hg mass for Hg concentrations > 1 ug/dscm;
Every sample
Sample invalidated.*

<=20% of section 1 Hg mass for Hg concentrations <=1 ug/dscm

Paired sorbent trap agreement
<=10% Relative Deviation (RD) mass for Hg concentrations >1 ug/dscm;
Every run
Run invalidated.*

<=20% RD or <=0.2 ug/dscm absolute difference for Hg concentrations <=1 ug/dscm

Sample analysis
Within valid calibration range (within calibration curve)
All Section 1 samples where stack Hg concentation is >=0.5 ug/dscm
Reanalyze at more concentrated level if possible, samples invalidated if not within calibrated range.
Sample analysis
Within bounds of Hg[0] and HgCl2 Analytical Bias Test
All Section 1 samples where stack Hg concentration is >=0.5 ug/dscm
Expand bounds of Hg[0]and HgCl2 Analytical Bias Test; if not successful, samples invalidated.
Field recovery test
Average recovery between 85% and 115% for Hg[0]
Once per field test
Field sample runs not validated without successful field recovery test.
*And data from the pair of sorbent traps are also invalidated.
* * * * *
      10.3  Thermocouples and Other Temperature Sensors. Use the procedures and criteria in Section 10.3 of Method 2 in Appendix A - 1 to this part to calibrate in-stack temperature sensors and thermocouples. Dial thermometers shall be calibrated against mercury-in-glass thermometers or equivalent.  * * *
* * * * *
         38. In Performance Specification 1 of Appendix B by revising Section 3.5 to read as follows:
Performance Specification 1  --  Specifications and Test Procedures for Continuous Opacity Monitoring Systems in Stationary Sources
* * * * *
      3.5   Full Scale. The maximum data display output of the COMS. For purposes of recordkeeping and reporting, full scale will be greater than 80 percent opacity.
Note: "Full scale" means "span."
* * * * *
	54.  In Performance Specification 3 of Appendix B by revising Section 13.2 as follows:
Performance Specification 3  --  Specifications and Test Procedures for O2 and CO2 Continuous Emission Monitoring Systems in Stationary Sources
* * * * *
	13.2  CEMS Relative Accuracy Performance Specification. The RA of the CEMS must be no greater than 20 percent of the mean value of the RM test data or 1.0 percent O2 or CO2, whichever is greater.
* * * * *
      55.  In Performance Specification 4 of Appendix B by
revising Section 8.2 as follows:
Performance Specification 4  --  Specifications and Test Procedures for Carbon Monoxide Continuous Emission Monitoring Systems in Stationary Sources
* * * * *
      8.2  Reference Methods. Unless otherwise specified in an applicable subpart of the regulation, Method 10, 10A, 10B or other approved alternative are the RM for this PS.
* * * * *
	56.  In Performance Specification 4B of Appendix B by revising Section 7.1.1 as follows:
Performance Specification 4B  --  Specifications and Test Procedures for Carbon Monoxide and Oxygen Continuous Monitoring Systems in Stationary Sources
* * * * *
	7.1.1  Calculations. Summarize the results on a data sheet.  Average the differences between the instrument response and the certified cylinder gas value for each gas. Calculate the CE results for the CO monitor according to:
		CE = |d/FS| x 100      (1)
Where d is the mean difference between the CEMS response and the known reference concentration, and FS is the span value. The CE for the O2 monitor is the average percent O2 difference between the O2 monitor and the certified cylinder gas value for each gas.
*  *  *  *  *
      57.  In Performance Specification 7 of Appendix B by
revising Section 8.4 and adding a reference to the end of Section 16.0.
Performance Specification 7  --  Specifications and Test Procedures for Hydrogen Sulfide Continuous Emission Monitoring Systems in Stationary Sources
* * * * *
      8.4  Relative Accuracy Test Procedure.
      8.4.1  Sampling Strategy for RM Tests, Number of RM Tests, Correlation of RM and CEMS Data, and Calculations. These are the same as that in PS-2, Sections 8.4.3 (except as specified below), 8.4.4, 8.4.5, and 8.4.6, respectively.
      8.4.2  Reference Methods. Unless otherwise specified in an applicable subpart of the regulation, Methods 11, 15, and 16 may be used for the RM for this PS.
      <IP_ADDRESS>  Sampling Time Per Run - Method 11. A sampling run, when Method 11 (integrated sampling) is used, shall consist of a single measurement for at least 10 minutes and 0.010 dscm (0.35 dscf). Each sample shall be taken at approximately 30-minute intervals.
      <IP_ADDRESS> Sampling Time Per Run - Methods 15 and 16. The sampling run shall consist of two injections equally spaced over a 30-minute period following the procedures described in the particular method.  NOTE: Caution! Heater or non-approved electrical probes should not be used around explosive or flammable sources.
* * * * *
16.0  References.
* * *
	5.  Letter to RAMCON Environmental Corp. from Robert Kellam, December 27, 1992.
* * * * *
      58.   In Performance Specification 11 of Appendix B by revising Sections 12.1(1) and (2) as follows:
Performance Specification 11  --  Specifications and Test Procedures for Particulate Matter Continuous Emission Monitoring Systems at Stationary Sources
* * * * *
      12.1 * * *
      (1) Calculate the upscale drift (UD) using Equation 11 - 1:
                        UD=RCEM-RUFSx100   (Eq. 11-1)
Where:
      UD = The upscale (high-level) drift of your PM CEMS in percent,
      RCEM= The measured PM CEMS response to the upscale reference standard, and
      RU= The pre-established numerical value of the upscale reference standard.
      FS= Full-scale value.
      (2) Calculate the zero drift (ZD) using Equation 11 - 2:
                        ZD=RCEM-RLFSx100   (Eq. 11-2)
Where:
      ZD = The zero (low-level) drift of your PM CEMS in percent,
      RCEM= The measured PM CEMS response to the zero reference standard,
      RL= The pre-established numerical value of the zero reference standard, and
      FS= Full-scale value.
* * * * *
      59.   In Performance Specification 15 of Appendix B by
revising Sections <IP_ADDRESS>.2 and <IP_ADDRESS>.3 as follows:
Performance Specification 15  --  Performance Specification for Extractive FTIR Continuous Emission Monitoring Systems in Stationary Sources
* * * * *
	<IP_ADDRESS>.2  RMs Using a Grab Sampling Technique. Synchronize the RM and FTIR CEM measurements as closely as possible. For a grab sampling RM, record the volume collected and the exact sampling period for each sample. Synchronize the FTIR CEM so that the FTIR measures a spectrum of a similar cell volume at the same time as the RM grab sample was collected. Measure at least five independent samples with both the FTIR CEM and the RM for each of the minimum nine runs. Compare the run concentration averages by using the relative accuracy analysis procedure in Performance Specification 2 of Appendix B of 40 CFR Part 60.
	<IP_ADDRESS>.3  Continuous Emission Monitors as RMs. If the RM is a CEM, synchronize the sampling flow rates of the RM and the FTIR CEM. Each run is at least 1 hour long and consists of at least 10 FTIR CEM measurements and the corresponding 10 RM measurements (or averages). For the statistical comparison, use the relative accuracy analysis procedure in Performance Specification 2 of Appendix B of 40 CFR Part 60. If the RM time constant is < (1/2) the FTIR CEM time constant, brief fluctuations in analyte concentrations that are not adequately measured with the slower FTIR CEM time constant can be excluded from the run average along with the corresponding RM measurements. However, the FTIR CEM run average must still include at least 10 measurements over a 1-hour period.
* * * * *
      60.   In Performance Specification 16 of Appendix B by
revising Sections 6.1.7, 8.2.1, 9.1, 9.3, 9.4, 12.4, and 13.5 as follows:
Performance Specification 16  --  Specifications and Test Procedures for Predictive Emission Monitoring Systems in Stationary Sources
* * * * *
      6.1.7  Sensor Location and Repair. We recommend you install sensors in an accessible location in order to perform repairs and replacements. Permanently-installed platforms or ladders may not be needed. If you install sensors in an area that is not accessible, you may be required to shut down the emissions unit to repair or replace a sensor. Conduct a new RATA after replacing a sensor that supplies a critical PEMS parameter if the new sensor provides a different output or scaling or changes the historical training dataset of the PEMS. Replacement of a non-critical sensor that does not cause an impact in the accuracy of the PEMS does not trigger a RATA. All sensors must be calibrated as often as needed but at least as often as recommended by the manufacturers.
* * * * *
      8.2.1  Reference Methods. Unless otherwise specified in the applicable regulations, you must use the test methods in Appendix A of this part for the RM test. Conduct the RM tests at three operating levels. The RM tests shall be performed at a low-load (or production) level between the minimum safe, stable load and 50 percent of the maximum level load, at the mid-load level (an intermediary level between the low and high levels), and at a high-load level between 80 percent and the maximum load. Alternatively, if practicable, you may test at three levels of the key operating parameter (e.g. selected based on a covariance analysis between each parameter and the PEMS output) equally spaced within the normal range of the parameter.
* * * * *
	9.1 QA/QC Summary. Conduct the applicable ongoing tests listed below.

           Ongoing Quality Assurance Tests

         Test

PEMS Regulatory          Purpose

   Acceptability

      Frequency

Sensor Evaluation Check

All

Daily

RAA

Compliance

3-test avg <=10% of simultaneous analyzer or RM average

Each quarter except quarter when RATA performed

RATA

All

Same as for RA in Sec. 13.1

Yearly in quarter when RAA not performed

Bias Correction

All

If davg <= cc

Bias test passed (no correction factor needed)

PEMS Training

All

If Fcritical F
    r 0.8

Optional after initial and subsequent RATAs

Sensor Evaluation Alert Test
(optional)

All

See Section 6.1.8

After each PEMS training

* * * * *
      9.3  Quarterly Relative Accuracy Audits. In the first year of operation after the initial certification, perform a RAA consisting of at least three 30-minute portable analyzer or RM determinations each quarter a RATA is not performed. To conduct a RAA, follow the procedures in Section 8.2 for the relative accuracy test, except that only three sets of measurement data are required, and the statistical tests are not required. The average of the three or more portable analyzer or RM determinations must not exceed the limits given in Section 13.5. Report the data from all sets of measurement data. If a PEMS passes all quarterly RAAs in the first year and also passes the subsequent yearly RATA in the second year, you may elect to perform a single mid-year RAA in the second year in place of the quarterly RAAs. This option may be repeated, but only until the PEMS fails either a mid-year RAA or a yearly RATA. When such a failure occurs, you must resume quarterly RAAs in the quarter following the failure and continue conducting quarterly RAAs until the PEMS successfully passes both a year of quarterly RAAs and a subsequent RATA.
      9.4  Yearly Relative Accuracy Test. Perform a minimum 9-run RATA at the normal operating level on a yearly basis in the quarter that the RAA is not performed. The statistical tests in Section 8.3 are not required for the yearly RATA.
* * * * *
	12.4  Relative Accuracy Audit. Calculate the quarterly RAA using Equation 16-9.
				Eq. 16-9
* * * * *
      13.5  Relative Accuracy Audits. The average of the three portable analyzer or RM determinations must not differ from the simultaneous PEMS average value by more than 10 percent of the analyzer or RM for concentrations greater than 100 ppm or 20 percent for concentrations between 100 and 20 ppm, or the test is failed. For measurements at 20 ppm or less, this difference must not exceed 2 ppm for a pollutant PEMS and 1 percent absolute for a diluents PEMS.
* * * * *
	61.  In Procedure 1 of Appendix F by revising Section 6.2 as follows:
Procedure 1  --  Quality Assurance Requirements for Gas Continuous Emission Monitoring Systems Used for Compliance Determination
* * * * *
	6.2  RAA Accuracy Calculation. Use the calculation procedure in the relevant performance specification to calculate the accuracy for the RAA. The RAA must be calculated in the units of the applicable emission standard.
* * * * *
         62. In Procedure 2 of Appendix F by revising paragraphs (3) and (4) in Section 12.0 as follows:
Procedure 2  --  Quality Assurance Requirements for Particulate Matter Continuous Emission Monitoring Systems at Stationary Sources
* * * * *
      12.0 * * *
      (3)  How do I calculate daily upscale and zero drift? You must calculate the upscale drift using Equation 2-2 and the zero drift using Equation 2-3:
                         UD=RCEM-RUFSx100   (Eq. 2-2)
Where:
      UD = The upscale drift of your PM CEMS, in percent,
      RCEM = Your PM CEMS response to the upscale check value, and
      RU = The upscale check value.
      FS = Full-scale value.
                         ZD=RCEM-RLFSx100   (Eq. 2-3)
Where:
      ZD = The zero (low-level) drift of your PM CEMS, in percent,
      RCEM = Your PM CEMS response of the zero check value,
      RL = The zero check value, and
* * *
      (4)  How do I calculate SVA accuracy? You must use Equation 2-4 to calculate the accuracy, in percent, for each of the three SVA tests or the daily sample volume check:
                     Accuracy=(VR- VM)VRx100   (Eq. 2-4)
Where:
      VM= Sample gas volume determined/reported by your PM CEMS (e.g., dscm),
      VR= Sample gas volume measured by the independent calibrated reference device (e.g., dscm) for the SVA or the reference value for the daily sample volume check.
      Note: Before calculating SVA accuracy, you must correct the sample gas volumes measured by your PM CEMS and the independent calibrated reference device to the same basis of temperature, pressure, and moisture content. You must document all data and calculations.
* * * * *
         63. In Procedure 5 of Appendix F by redesignating the second listing of Section 6.2.6 as Section 6.2.7.
PART 61  -  NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS
         1. The authority citation for part 61 continues to read as follows:  42 U.S.C. 7401, et seq.
§ 61.13  [Amended]
      2.  By revising § 61.13(e)(1)(i) to read as follows:
61.13  Emission tests and waiver of emission tests.
* * * * *
	(e)  * * *
	(1)  * * *
	(i)  The source owner, operator, or representative of the tested facility shall obtain an audit sample, if commercially available, from an AASP for each test method used for regulatory compliance purposes. No audit samples are required for the following test methods: Methods 3A and 3C of Appendix A-3 of Part 60; Methods 6C, 7E, 9, and 10 of Appendix A-4 of Part 60; Method 18 and 19 of Appendix A-6 of Part 60; Methods 20, 22, and 25A of Appendix A-7 of Part 60; and Methods 303, 318, 320, and 321 of Appendix A of Part 63. If multiple sources at a single facility are tested during a compliance test event, only one audit sample is required for each method used during a compliance test. The compliance authority responsible for the compliance test may waive the requirement to include an audit sample if they believe that an audit sample is not necessary. "Commercially available" means that two or more independent AASPs have blind audit samples available for purchase. If the source owner, operator, or representative cannot find an audit sample for a specific method, the owner, operator, or representative shall consult the EPA web site at the following URL, www.epa.gov/ttn/emc, to confirm whether there is a source that can supply an audit sample for that method. If the EPA web site does not list an available audit sample at least 60 days prior to the beginning of the compliance test, the source owner, operator, or representative shall not be required to include an audit sample as part of the quality assurance program for the compliance test. When ordering an audit sample, the source owner, operator, or representative shall give the sample provider an estimate for the concentration of each pollutant that is emitted by the source or the estimated concentration of each pollutant based on the permitted level and the name, address, and phone number of the compliance authority. The source owner, operator, or representative shall report the results for the audit sample along with a summary of the emission test results for the audited pollutant to the compliance authority and shall report the results of the audit sample to the AASP. The source owner, operator, or representative shall make both reports at the same time and in the same manner or shall report to the compliance authority first and report to the AASP. If the method being audited is a method that allows the samples to be analyzed in the field and the tester plans to analyze the samples in the field, the tester may analyze the audit samples prior to collecting the emission samples provided a representative of the compliance authority is present at the testing site. The tester may request, and the compliance authority may grant, a waiver to the requirement that a representative of the compliance authority must be present at the testing site during the field analysis of an audit sample. The source owner, operator, or representative may report the results of the audit sample to the compliance authority and then report the results of the audit sample to the AASP prior to collecting any emission samples. The test protocol and final test report shall document whether an audit sample was ordered and utilized and the pass/fail results as applicable.
* * * * *
§61.33  [Amended]
      3.  By revising §61.33(a) as follows:
§ 61.33   Stack sampling.
      (a) Unless a waiver of emission testing is obtained under §61.13, each owner or operator required to comply with §61.32(a) shall test emissions from the source according to Method 104 of Appendix B to this part or according to Method 29 of Appendix A to Part 60. Method 103 of Appendix B to this part is approved by the Administrator as an alternative method for sources subject to §61.32(a). The emission test shall be performed --
      (1) Within 90 days of the effective date in the case of an existing source or a new source which has an initial startup date preceding the effective date; or
      (2) Within 90 days of startup in the case of a new source which did not have an initial startup date preceding the effective date.
* * * * *
         4. By revising §61.42(a) as follows:
§ 61.42   Emission standard.
      (a) Emissions to the atmosphere from rocket-motor test sites shall not cause time-weighted atmospheric concentrations of beryllium to exceed 75 microgram minutes per cubic meter (ug-min/m[3]) (4.68 x 10-9 pound minutes per cubic foot (lb-min/ft[3])) of air within the limits of 10 to 60 minutes, accumulated during any 2 consecutive weeks, in any area in which an adverse effect to public health could occur.
* * * * *
         5.  By revising §61.53(d)(2) as follows:
§ 61.53   Stack sampling.
* * * * *
      (d) * * *
      (2) Method 101A in Appendix B or Method 29 in Appendix A to part 60 shall be used to test emissions as follows:
* * * * *
         6. By revising §61.164(d)(2)(i), (e)(1)(i), and (e)(2) as follows:
§ 61.164   Test methods and procedures.
* * * * *
      (d) * * *
      (2) * * *
      (i) Use Method 108 in Appendix B to this part or Method 29 in Appendix A to part 60 for determining the arsenic emission rate, g/hr (lb/hr). The emission rate shall equal the arithmetic mean of the results of three 60-minute test runs.
* * * * *
      (e) * * *
      (1) * * *
      (i) Use Method 108 in Appendix B to this part or Method 29 in Appendix A to part 60 to determine the concentration of arsenic in the gas streams entering and exiting the control device. Conduct three 60-minute test runs, each consisting of simultaneous testing of the inlet and outlet gas streams. The gas streams shall contain all the gas exhausted from the glass melting furnace.
* * * * *
      (2)  Calculate the percent emission reduction for each run as follows:

Where:
      D  = the percent emission reduction.
      Cb = the arsenic concentration of the stack gas entering the control device, as measured by Method 108 or Method 29.
      Ca = the arsenic concentration of the stack gas exiting the control device, as measured by Method 108 or Method 29.
* * * * *
         7. In Method 101 of Appendix B by redesignating Section 16 as Section 17 and redesignating Section 17 as Section 18, and by adding a new Section 16 as follows:
Method 101  -  Determination of Particulate and Gaseous Mercury Emissions From Chlor-Alkali Plants (Air Streams)
* * * * *
      16.0  Alternative Procedures
      16.1  Alternative Analyzer. Samples may also be analyzed by cold vapor atomic fluorescence spectrometry.
* * * * *
         8.  In Method 101A of Appendix B by redesignating Section 16 as Section 17 and redesignating Section 17 as Section 18, and by adding a new Section 16 as follows:
Method 101A  -  Determination of Particulate and Gaseous Mercury Emissions From Sewage Sludge Incinerators
* * * * *
      16.0  Alternative Procedures
      16.1  Alternative Analyzers.
      16.1.1  Inductively coupled plasma-atomic emission spectrometry (ICP-AES) may be used as an alternative to atomic absorption analysis provided the following conditions are met:
      <IP_ADDRESS>  Sample collection, sample preparation, and analytical preparation procedures are as defined in the method except as necessary for the ICP-AES application.
      <IP_ADDRESS>  The quality control procedures are conducted as prescribed.
      <IP_ADDRESS>  The limit of quantitation for the ICP-AES must be demonstrated and the sample concentrations reported should be no less than two times the limit of quantitation. The limit of quantitation is defined as ten times the standard deviation of the blank value. The standard deviation of the blank value is determined from the analysis of seven blanks. It has been reported that for mercury and those elements that form hydrides, a continuous-flow generator coupled to an ICP-AES offers detection limits comparable to cold vapor atomic absorption.
6.1.2  Samples may also be analyzed by cold vapor atomic fluorescence spectrometry.
* * * * *
         9.  In Method 102 in Appendix B by revising Section <IP_ADDRESS> as follows:
Method 102  -  Determination of Particulate and Gaseous Mercury Emissions from Chlor-Alkali Plants (Hydrogen Streams)
* * * * *
	<IP_ADDRESS>  Calibrate the meter box orifice. Use the techniques described in APTD-0576 (see Reference 9 in Section 17.0 of Method 5 of Appendix A to Part 60). Calibration of the orifice meter at flow conditions that simulate the conditions at the source is suggested. Calibration should either be done with hydrogen or with some other gas having a similar Reynolds Number so that there is similarity between the Reynolds Numbers during calibration and during sampling. Alternative mercury-free thermometers may be used if the thermometers are, at a minimum, equivalent in terms of performance or suitably effective for the specific temperature measurement application.
* * * * *
         10.  In Method 104 in Appendix B by revising Sections 4.1 and 11.5.3, by redesignating Sections 16 and 17 as Sections 17 and 18 respectively, and by adding a new Section 16 as follows:
Method 104  -  Determination of Beryllium Emissions From Stationary Sources
* * * * *
      4.1  Matrix Effects.  Analysis for Be by flame atomic absorption spectrophotometry is sensitive to the chemical composition and to the physical properties (e.g., viscosity, pH) of the sample. Aluminum and silicon, in particular, are known to interfere when present in appreciable quantities. The analytical procedure includes (optionally) the use of the Method of Standard Additions to check for these matrix effects, and sample analysis using the Method of Standard Additions if significant matrix effects are found to be present (see Reference 2 in Section 17.0).
* * * * *
      11.5.3  Check for Matrix Effects (optional). Use the Method of Standard Additions (see Reference 2 in Section 17.0) to check at least one sample from each source for matrix effects on the Be results. If the results of the Method of Standard Additions procedure used on the single source sample do not agree to within 5 percent of the value obtained by the routine atomic absorption analysis, then reanalyze all samples from the source using the Method of Standard Additions procedure.
* * * * *
16.0  Alternative Procedures
      16.1  Alternative Analyzer. Inductively coupled plasma-atomic emission spectrometry (ICP-AES) may be used as an alternative to atomic absorption analysis provided the following conditions are met:
      16.1.1  Sample collection, sample preparation, and analytical preparation procedures are as defined in the method except as necessary for the ICP-AES application.
      16.1.2  Quality Assurance/Quality Control procedures, including audit material analysis, are conducted as prescribed in the method. The QA acceptance conditions must be met.
      16.1.3  The limit of quantitation for the ICP-AES must be demonstrated and the sample concentrations reported should be no less than two times the limit of quantitation. The limit of quantitation is defined as ten times the standard deviation of the blank value. The standard deviation of the blank value is determined from the analysis of seven blanks. It has been reported that for mercury and those elements that form hydrides, a continuous-flow generator coupled to an ICP-AES offers detection limits comparable to cold vapor atomic absorption.
* * * * *
         11.  In Method 108 of Appendix B by redesignating Sections 16 and 17 as Sections 17 and 18 respectively, and by adding a new Section 16 as follows:
Method 108  -  Determination of Particulate and Gaseous Arsenic Emissions
* * * * *
16.0  Alternative Procedures
      16.1  Alternative Analyzer. Inductively coupled plasma-atomic emission spectrometry (ICP-AES) may be used as an alternative to atomic absorption analysis provided the following conditions are met:
      16.1.1  Sample collection, sample preparation, and analytical preparation procedures are as defined in the method except as necessary for the ICP-AES application.
      16.1.2  Quality Assurance/Quality Control procedures, including audit material analysis, are conducted as prescribed in the method. The QA acceptance conditions must be met.
      16.1.3  The limit of quantitation for the ICP-AES must be demonstrated and the sample concentrations reported should be no less than two times the limit of quantitation. The limit of quantitation is defined as ten times the standard deviation of the blank value. The standard deviation of the blank value is determined from the analysis of seven blanks. It has been reported that for mercury and those elements that form hydrides, a continuous-flow generator coupled to an ICP-AES offers detection limits comparable to cold vapor atomic absorption.
* * * * *
         12. In Method 108A of Appendix B by redesignating Sections 16 and 17 as Sections 17 and 18 respectively, and by adding a new Section 16 as follows:
Method 108A  -  Determination of Arsenic Content in Ore Samples from Nonferrous Smelters
* * * * *
16.0  Alternative Procedures
      16.1  Alternative Analyzer. Inductively coupled plasma-atomic emission spectrometry (ICP-AES) may be used as an alternative to atomic absorption analysis provided the following conditions are met:
      16.1.1  Sample collection, sample preparation, and analytical preparation procedures are as defined in the method except as necessary for the ICP-AES application.
      16.1.2  Quality Assurance/Quality Control procedures, including audit material analysis, are conducted as prescribed in the method.  The QA acceptance conditions must be met.
      16.1.3  The limit of quantitation for the ICP-AES must be demonstrated and the sample concentrations reported should be no less than two times the limit of quantitation. The limit of quantitation is defined as ten times the standard deviation of the blank value. The standard deviation of the blank value is determined from the analysis of seven blanks. It has been reported that for mercury and those elements that form hydrides, a continuous-flow generator coupled to an ICP-AES offers detection limits comparable to cold vapor atomic absorption.
* * * * *
PART 63  -  NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES
         1.  The authority citation for part 63 continues to read as follows:  Authority:  42 U.S.C. 7401 et seq.
§63.7  [Amended]
         2.  By revising Section 63.7(c)(iii)(A) as follows:
§63.7  Performance testing requirements.
* * * * *
	(c)  * * *
	(2)  * * *
	(iii)  * * *
	(A)  The source owner, operator, or representative of the tested facility shall obtain an audit sample, if commercially available, from an AASP for each test method used for regulatory compliance purposes. No audit samples are required for the following test methods: Methods 3A and 3C of Appendix A-3 of Part 60; Methods 6C, 7E, 9, and 10 of Appendix A-4 of Part 60; Methods 18 and 19 of Appendix A-6 of Part 60; Methods 20, 22, and 25A of Appendix A-7 of Part 60; and Methods 303, 318, 320, and 321 of Appendix A of Part 63. If multiple sources at a single facility are tested during a compliance test event, only one audit sample is required for each method used during a compliance test. The compliance authority responsible for the compliance test may waive the requirement to include an audit sample if they believe that an audit sample is not necessary. "Commercially available" means that two or more independent AASPs have blind audit samples available for purchase. If the source owner, operator, or representative cannot find an audit sample for a specific method, the owner, operator, or representative shall consult the EPA web site at the following URL, www.epa.gov/ttn/emc, to confirm whether there is a source that can supply an audit sample for that method. If the EPA web site does not list an available audit sample at least 60 days prior to the beginning of the compliance test, the source owner, operator, or representative shall not be required to include an audit sample as part of the quality assurance program for the compliance test. When ordering an audit sample, the source owner, operator, or representative shall give the sample provider an estimate for the concentration of each pollutant that is emitted by the source or the estimated concentration of each pollutant based on the permitted level and the name, address, and phone number of the compliance authority. The source owner, operator, or representative shall report the results for the audit sample along with a summary of the emission test results for the audited pollutant to the compliance authority and shall report the results of the audit sample to the AASP. The source owner, operator, or representative shall make both reports at the same time and in the same manner or shall report to the compliance authority first and report to the AASP. If the method being audited is a method that allows the samples to be analyzed in the field and the tester plans to analyze the samples in the field, the tester may analyze the audit samples prior to collecting the emission samples provided a representative of the compliance authority is present at the testing site. The tester may request, and the compliance authority may grant, a waiver to the requirement that a representative of the compliance authority must be present at the testing site during the field analysis of an audit sample. The source owner, operator, or representative may report the results of the audit sample to the compliance authority and then report the results of the audit sample to the AASP prior to collecting any emission samples. The test protocol and final test report shall document whether an audit sample was ordered and utilized and the pass/fail results as applicable.
* * * * *
§63.8  [Amended]
         3. By adding a sentence to the end of §63.8(f)(6)(iii) as follows:
§63.8   Monitoring requirements.
* * * * *
      (f) * * *
      (6) * * *
      (iii) * * *  The Administrator will review the notification and may rescind permission to use an alternative and require the owner or operator to conduct a relative accuracy test of the CEMS as specified in section 8.4 of Performance Specification 2.
* * * * *
§63.144  [Amended]
         4.       By revising §63.144(b)(5)(i) by adding paragraphs (G) and (H) as follows:
§63.144  Process wastewater provisions -- test methods and procedures for determining applicability and Group 1/Group 2 determinations (determining which wastewater streams require control).
* * * * *
      (b)* * *
      (5)* * *
      (i)* * *
      (G) Method 8260B.  Use procedures specified in Method 8260B in the SW-846 Compendium of Methods.
      (H)  Method 316.  Use Method 316 to determine formaldehyde concentration.
* * * * *
§63.344  [Amended]
	5.  By adding §63.344(c)(5) as follows:
§63.344  Performance test requirements and test methods.
* * * * *
	(c)  * * *
	(5)  The South Coast Air Quality Management District (SCAQMD) Method 205.1 (which is available by contacting the South Coast AQMD, 21865 Copley Dr, Diamond Bar, CA 91765) may be used to determine the total chromium concentration from hard and decorative chromium electroplating tanks and chromium anodizing tanks.
* * * * *
§63.364  [Amended]
6. By revising §63.364(e) as follows:
§63.364  Monitoring requirements.
* * * * *
	(e)  Measure and record once per hour the ethylene oxide concentration at the outlet to the atmosphere after any control device according to the procedures specified in §63.365(c)(1). The owner or operator shall compute and record a 24-hour average daily. The owner or operator will install, calibrate, operate, and maintain a monitor consistent with the requirements of performance specification (PS) 8 or 9 in 40 CFR Part 60, Appendix B, to measure ethylene oxide. The daily calibration requirements of section 7.2 of PS-9 or Section 13.1 of PS-8 are required only on days when ethylene oxide emissions are vented to the control device.
* * * * *
§63.365  [Amended]
         7.  By revising the introductory paragraph to §63.365(b) as follows:
§63.365  Test methods and procedures.
* * * * *
      (b) Efficiency at the sterilization chamber vent.  California Air Resources Board (CARB) Method 431 or the following procedures shall be used to determine the efficiency of all types of control devices used to comply with §63.362(c), sterilization chamber vent standard.
* * * * *
§63.565  [Amended]
         8.  By revising §63.565(d)(5), (8), and (10) and §63.565(g) as follows:
§63.565  Test methods and procedures.
* * * * *
      (d)* * *
      (5) Recovery devices.  The average VOC concentration in the vent upstream and downstream of the control device shall be determined using Method 25A or 25B of Appendix A to part 60 of this chapter for recovery devices. The average VOC concentration shall correspond to the volume measurement by taking into account the sampling system response time.
* * * * *
      (8) Where Method 25, 25A, or 25B is used to measure the percent reduction in VOC, the percent reduction across the combustion or recovery device shall be calculated as follows:

Where:
      R = control efficiency of control device, percent.
      Ei = mass flow rate of VOC at the inlet to the combustion or recovery device as calculated under paragraph (c)(7) of this section, kg/hr.
      Eo = mass flow rate of VOC at the outlet of the combustion or recovery device, as calculated under paragraph (c)(7) of this section, kg/hr.
* * * * *
      (10)  Use of methods other than Method 25, 25A, or 25B shall be validated pursuant to Method 301 of Appendix A to part 63 of this chapter.
* * * * *
      (g) Baseline outlet VOC concentration. The procedures in this paragraph shall be used to determine the outlet VOC concentration required in §63.563(b)(4), (6), (7), and (8) for combustion devices except flare, carbon adsorbers, condenser/refrigeration units, and absorbers, respectively, and to monitor the VOC concentration as required in §63.564(e), (g), (h), and (i). The owner or operator shall use the procedures outlined in Method 25A or 25B. For the baseline VOC concentration, the arithmetic average of the outlet VOC concentration from three test runs from paragraph (d) of this section shall be calculated for the control device. The VOC concentration shall be measured at least every 15 minutes. Compliance testing of VOC CEMS shall be performed using PS 8.
* * * * *
§63.750  [Amended]
         9.  By revising §63.750(o) as follows:
§63.750  Test methods and procedures.
* * * * *
      (o) Inorganic HAP emissions -- dry particulate filter certification requirements.  Dry particulate filters used to comply with §63.745(g)(2) or §63.746(b)(4) must be certified by the filter manufacturer or distributor, paint/depainting booth supplier, and/or the facility owner or operator using method 319 in Appendix A of this part, to meet or exceed the efficiency data points found in Tables 1 and 2, or 3 and 4 of §63.745 for existing or new sources respectively.
* * * * *
§63.1251  [Amended]
         10.  By revising the definition of "process vent" in §63.1251 as follows:
§63.1251  Definitions.
* * *
      Process vent means a vent from a unit operation or vents from multiple unit operations within a process that are manifolded together into a common header, through which a HAP-containing gas stream is, or has the potential to be, released to the atmosphere. Examples of process vents include, but are not limited to, vents on condensers used for product recovery, bottom receivers, surge control vessels, reactors, filters, centrifuges, and process tanks. Emission streams that are undiluted and uncontrolled containing less than 50 ppmv HAP, as determined through process knowledge that no HAP are present in the emission stream or using an engineering assessment as discussed in §63.1257(d)(2)(ii); test data using Method 18 of 40 CFR part 60, Appendix A; Method 320 of 40 CFR part 63; or any other test method that has been validated according to the procedures in Method 301 of Appendix A of this part, are not considered process vents. Process vents do not include vents on storage tanks regulated under §63.1253, vents on wastewater emission sources regulated under §63.1256, or pieces of equipment regulated under §63.1255.
* * * * *
§63.1511  [Amended]
         11. By revising §63.1511(c)(9) as follows:
§63.1511   Performance test/compliance demonstration general requirements.
* * * * *
      (c)* * *
      (9) Method 26A for the concentration of HCl. Where a lime-injected fabric filter is used as the control device to comply with the 90 percent reduction standard, the owner or operator must measure the fabric filter inlet concentration of HCl at a point before lime is introduced to the system. Method 26 may be used in place of Method 26A where it can be demonstrated that there are no water droplets in the emission stream. This can be demonstrated by showing that the vapor pressure of water in the emission stream that you are testing is less than the equilibrium vapor pressure of water at the emission stream temperature, and by certifying that the emission stream is not controlled by a wet scrubber.
* * * * *
         12. By revising Table 2 of Subpart CCCC as follows:
Subpart CCCC -- National Emission Standards for Hazardous Air Pollutants: Manufacturing of Nutritional Yeast
* * * * *

Table 2 to Subpart CCCC of Part 63  --  Requirements for Performance Tests
As stated in §63.2161, if you demonstrate compliance by monitoring brew ethanol, you must comply with the requirements for performance tests in the following table:
            [Brew Ethanol Monitoring Only]
For each fed-batch fermenter
for which compliance is
determined by monitoring brew ethanol concentration
and calculating VOC
concentration in the
fermenter exhaust according to the procedures in §63.2161, you must...

   Using...

According to the
following
requirements...
1. Measure VOC as propane
Method 25A*, or an alternative validated by EPA Method 301* and approved by the Administrator
You must measure the VOC concentration in the fermenter exhaust at any point prior to the dilution of the exhaust stream.
[*]EPA Test Methods found in Appendix A of 40 CFR part 60
* * * * *
         13. By revising Table 4 in the appendix to Subpart UUUU as follows:
Subpart UUUU -- National Emission Standards for Hazardous Air Pollutants for Cellulose Products Manufacturing
* * * * *
Table 4 to Subpart UUUU of Part 63  --  Requirements for Performance Tests
      As required in §§63.5530(b) and 63.5535(a), (b), (g)(1), and (h)(1), you must conduct performance tests, other initial compliance demonstrations, and CEMS performance evaluations and establish operating limits according to the requirements in the following table:
For . . .
at . . .
you must . . .
using . . .
according to the following requirements . . .
1. the sum of all process vents
a. each existing or new affected source
i. select sampling port's location and the number of traverse points;
EPA Method 1 or 1A in Appendix A to 40 CFR  §63.7(d)(1)(i);
sampling sites must be located at the inlet and outlet to each control device;

ii. determine velocity and volumetric flow rate;
EPA Method 2, 2A, 2C, 2D, 2F, or 2G in Appendix A to part 60 of this chapter;
you may use EPA Method 2A, 2C, 2D, 2F, or 2G as an alternative to using EPA Method 2, as appropriate;

iii. conduct gas analysis; and,
(1) EPA Method 3, 3A, or 3B in Appendix A to part 60 of this chapter; or,
you may use EPA Method 3A or 3B as an alternative to using EPA Method 3; or,

(2) ASME PTC 19.10 - 1981 -- Part 10; and,
you may use ASME PTC 19.10 - 1981 -- Part 10 (available for purchase from Three Park Avenue, New York, NY 10016 - 5990) as an alternative to using EPA Method 3B.

iv. measure moisture content of the stack gas.
EPA Method 4 in Appendix A to part 60 of this chapter.

2. the sum of all viscose process vents
a. each existing or new viscose process source
i. measure total sulfide emissions
(1) EPA Method 15 in Appendix A to part 60 of this chapter; or
(a) you must conduct testing of emissions at the inlet and outlet of each control device;
(b) you must conduct testing of emissions from continuous viscose process vents and combinations of batch and continuous viscose process vents at normal operating conditions, as specified in §§63.7(e)(1) and 63.5535;
(c) you must conduct testing of emissions from batch viscose process vents as specified in §63.490(c), except that the emission reductions required for process vents under this subpart supersede the emission reductions required for process vents under subpart U of this part; and
(d) you must collect CPMS data during the period of the initial compliance demonstration and determine the CPMS operating limit during the period of the initial compliance demonstration; or

(2) carbon disulfide and/or hydrogen sulfide CEMS, as applicable;
(a) you must measure emissions at the inlet and outlet of each control device using CEMS;
(b) you must install, operate, and maintain the CEMS according to the applicable performance specification (PS - 7, PS - 8, PS - 9, or PS - 15) of 40 CFR part 60, appendix B; and
(c) you must collect CEMS emissions data at the inlet and outlet of each control device during the period of the initial compliance demonstration and determine the CEMS operating limit during the period of the initial compliance demonstration.
3. the sum of all solvent coating process vents
a. each existing or new cellophane operation
i. measure toluene emissions
(1) EPA Method 18 in Appendix A to part 60 of this chapter, or Method 320 in appendix A to part 63, or
(a) you must conduct testing of emissions at the inlet and outlet of each control device;
(b) you may use EPA Method 18 or 320 to determine the control efficiency of any control device for organic compounds; for a combustion device, you must use only HAP that are present in the inlet to the control device to characterize the percent reduction across the combustion device;

(c) you must conduct testing of emissions from continuous solvent coating process vents and combinations of batch and continuous solvent coating process vents at normal operating conditions, as specified in §§63.7(e)(1) and 63.5535;

(d) you must conduct testing of emissions from batch solvent coating process vents as specified in §63.490(c), except that the emission reductions required for process vents under this subpart supersede the emission reductions required for process vents under subpart U of this part; and

(e) you must collect CPMS data during the period of the initial compliance demonstration and determine the CPMS operating limit during the initial compliance demonstration; or

(2) ASTM D6420 - 99
(a) you must conduct testing of emissions at the inlet and outlet of each control device;

(b) you may use ASTM D6420 - 99 (available for purchase from at least one of the following addresses: 100 Barr Harbor Drive, West Conshohocken, PA 19428 - 2959; or University Microfilms International, 300 North Zeeb Road, Ann Arbor, MI 48106) as an alternative to EPA Method 18 only where: the target compound(s) are those listed in Section 1.1 of ASTM D6420 - 99; and the target concentration is between 150 parts per billion by volume (ppbv) and 100 ppmv; for target compound(s) not listed in Section 1.1 of ASTM D6420 - 99, but potentially detected by mass spectrometry, the additional system continuing calibration check after each run, as detailed in Section 10.5.3 of the ASTM method, must be followed, met, documented, and submitted with the data report even if there is no moisture condenser used or the compound is not considered water soluble; and for target compound(s) not listed in Section 1.1 of ASTM D6420 - 99 and not amenable to detection by mass spectrometry, ASTM D6420 - 99 does not apply;

(c) you must conduct testing of emissions from continuous solvent coating process vents and combinations of batch and continuous solvent coating process vents at normal operating conditions, as specified in §§63.7(e)(1) and 63.5535;

(d) you must conduct testing of emissions from batch solvent coating process vents as specified in §63.490(c), except that the emission reductions required for process vents under this subpart supersede the emission reductions required for process vents under subpart U of this part; and,

(e) you must collect CPMS data during the period of the initial compliance demonstration and determine the CPMS operating limit during the period of the initial compliance demonstration.
4. the sum of all cellulose ether process vents
a. each existing or new cellulose ether operation
i. measure total organic HAP emissions
(1) EPA Method 18 in Appendix A to part 60 of this chapter or Method 320 in appendix A to part 63, or
(a) you must conduct testing of emissions at the inlet and outlet of each control device;

(b) you may use EPA Method 18 or 320 to determine the control efficiency of any control device for organic compounds; for a combustion device, you must use only HAP that are present in the inlet to the control device to characterize the percent reduction across the combustion device;

(c) you must conduct testing of emissions from continuous cellulose ether process vents and combinations of batch and continuous cellulose ether process vents at normal operating conditions, as specified in §§63.7(e)(1) and 63.5535;

(d) you must conduct testing of emissions from batch cellulose ether process vents as specified in §63.490(c), except that the emission reductions required for process vents under this subpart supersede the emission reductions required for process vents under subpart U of this part; and

(e) you must collect CPMS data during the period of the initial performance test and determine the CPMS operating limit during the period of the initial performance test;

(2) ASTM D6420 - 99
(a) you must conduct testing of emissions at the inlet and outlet of each control device;

(b) you may use ASTM D6420 - 99 (available for purchase from at least one of the following addresses: 100 Barr Harbor Drive, West Conshohocken, PA 19428 - 2959; or University Microfilms International, 300 North Zeeb Road, Ann Arbor, MI 48106) as an alternative to EPA Method 18 only where: the target compound(s) are those listed in Section 1.1 of ASTM D6420 - 99; and the target concentration is between 150 ppbv and 100 ppmv; for target compound(s) not listed in Section 1.1 of ASTM D6420 - 99, but potentially detected by mass spectrometry, the additional system continuing calibration check after each run, as detailed in Section 10.5.3 of the ASTM method, must be followed, met, documented, and submitted with the data report even if there is no moisture condenser used or the compound is not considered water soluble; and for target compound(s) not listed in Section 1.1 of ASTM D6420 - 99 and not amenable to detection by mass spectrometry, ASTM D6420 - 99 does not apply; target concentration is between 150 ppbv and 100 ppmv for target compound(s).

(c) you must conduct testing of emissions from continuous cellulose ether process vents and combinations of batch and continuous cellulose ether process vents at normal operating conditions, as specified in §§63.7(e)(1) and 63.5535;

(d) you must conduct testing of emissions from batch cellulose ether process vents as specified in §63.490(c), except that the emission reductions required for process vents under this subpart supersede the emission reductions required for process vents under subpart U of this part; and

(e) you must collect CPMS data during the period of the initial performance test and determine the CPMS operating limit during the period of the initial performance test.

(3) EPA Method 25 in Appendix A to part 60 of this chapter; or
(a) you must conduct testing of emissions at the inlet and outlet of each control device;

(b) you may use EPA Method 25 to determine the control efficiency of combustion devices for organic compounds; you may not use EPA Method 25 to determine the control efficiency of noncombustion control devices;

(c) you must conduct testing of emissions from continuous cellulose ether process vents and combinations of batch and continuous cellulose ether process vents at normal operating conditions, as specified in §§63.7(e)(1) and 63.5535;
(d) you must conduct testing of emissions from batch cellulose ether process vents as specified in §63.490(c), except that the emission reductions required for process vents under this subpart supersede the emission reductions required for process vents under subpart U of this part; and

(e) you must collect CPMS data during the period of the initial performance test and determine the CPMS operating limit during the period of the initial performance test; or

(4) EPA Method 25A in Appendix A to part 60 of this chapter
(a) you must conduct testing of emissions at the inlet and outlet of each control device;

(b) you may use EPA Method 25A if: an exhaust gas volatile organic matter concentration of 50 ppmv or less is required in order to comply with the emission limit; the volatile organic matter concentration at the inlet to the control device and the required level of control are such as to result in exhaust volatile organic matter concentrations of 50 ppmv or less; or because of the high control efficiency of the control device, the anticipated volatile organic matter concentration at the control device exhaust is 50 ppmv or less, regardless of the inlet concentration;

(c) you must conduct testing of emissions from continuous cellulose ether process vents and combinations of batch and continuous cellulose ether process vents at normal operating conditions, as specified in §§63.7(e)(1) and 63.5535;

(d) you must conduct testing of emissions from batch cellulose ether process vents as specified in §63.490(c), except that the emission reductions required for process vents under this subpart supersede the emission reductions required for process vents under subpart U of this part; and,

(e) you must collect CPMS data during the period of the initial performance test and determine the CPMS operating limit during the period of the initial performance test.
5. each toluene storage vessel
a. each existing or new cellophane operation
i. measure toluene emissions
(1) EPA Method 18 in Appendix A to part 60 of this chapter or Method 320 in appendix A to part 63; or
(a) if venting to a control device to reduce emissions, you must conduct testing of emissions at the inlet and outlet of each control device;

(b) you may use EPA Method 18 or 320 to determine the control efficiency of any control device for organic compounds; for a combustion device, you must use only HAP that are present in the inlet to the control device to characterize the percent reduction across the combustion device;

(c) you must conduct testing of emissions from continuous storage vessel vents and combinations of batch and continuous storage vessel vents at normal operating conditions, as specified in §§63.7(e)(1) and 63.5535 for continuous process vents;

(d) you must conduct testing of emissions from batch storage vessel vents as specified in §63.490(c) for batch process vents, except that the emission reductions required for process vents under this subpart supersede the emission reductions required for process vents under subpart U of this part; and,

(e) you must collect CPMS data during the period of the initial compliance demonstration and determine the CPMS operating limit during the period of the initial compliance demonstration; or

(2) ASTM D6420 - 99
(a) if venting to a control device to reduce emissions, you must conduct testing of emissions at the inlet and outlet of each control device;

(b) you may use ASTM D6420 - 99 (available for purchase from at least one of the following addresses: 100 Barr Harbor Drive, West Conshohocken, PA 19428 - 2959; or University Microfilms International, 300 North Zeeb Road, Ann Arbor, MI 48106) as an alternative to EPA Method 18 only where: the target compound(s) are those listed in Section 1.1 of ASTM D6420 - 99, and the target concentration is between 150 ppbv and 100 ppmv; for target compound(s) not listed in Section 1.1 of ASTM D6420- 99, but potentially detected by mass spectrometry, the additional system continuing calibration check after each run, as detailed in Section 10.5.3 of the ASTM method, must be followed, met, documented, and submitted with the data report even if there is no moisture condenser used or the compound is not considered water soluble; and for target compound(s) not listed in Section 1.1 of ASTM D6420 - 99 and not amenable to detection by mass spectrometry, ASTM D6420 - 99 does not apply;

(c) you must conduct testing of emissions from continuous storage vessel vents and combinations of batch and continuous storage vessel vents at normal operating conditions, as specified in §§63.7(e)(1) and 63.5535 for continuous process vents;

(d) you must conduct testing of emissions from batch storage vessel vents as specified in §63.490(c) for batch process vents, except that the emission reductions required for process vents under this subpart supersede the emission reductions required for process vents under subpart U of this part; and,

(e) you must collect CPMS data during the period of the initial compliance demonstration and determine the CPMS operating limit during the period of the initial compliance demonstration.
6. the sum of all process vents controlled using a flare
a. each existing or new affected source
i. measure visible emissions
(1) EPA Method 22 in Appendix A to part 60 of this chapter
(a) you must conduct the flare visible emissions test according to §63.11(b).
7. equipment leaks
a. each existing or new cellulose ether operation
i. measure leak rate
(1) applicable equipment leak test methods in §63.180; or
(a) you must follow all requirements for the applicable equipment leak test methods in §63.180; or

(2) applicable equipment leak test methods in §63.1023
(a) you must follow all requirements for the applicable equipment leak test methods in §63.1023.
8. all sources of wastewater emissions
a. each existing or new cellulose ether operation
i. measure wastewater HAP emissions
(1) applicable wastewater test methods and procedures in §§63.144 and 63.145; or
(a) You must follow all requirements for the applicable wastewater test methods and procedures in §§63.144 and 63.145; or

(2) applicable wastewater test methods and procedures in §§63.144 and 63.145, using ASTM D5790 - 95 as an alternative to EPA Method 624 in Appendix A to part 163 of this chapter
(a) you must follow all requirements for the applicable waste water test methods and procedures in §§63.144 and 63.145, except that you may use ASTM D5790 - 95 (available for purchase from at least one of the following addresses: 100 Barr Harbor Drive, West Conshohocken, PA 19428 - 2959; or University Microfilms International, 300 North Zeeb Road, Ann Arbor, MI 48106) as an alternative to EPA Method 624, under the condition that this ASTM method be used with the sampling procedures of EPA Method 25D or an equivalent method.
9. any emission point
a. each existing or new affected source using a CEMS to demonstrate compliance
i. conduct a CEMS performance evaluation
(1) applicable requirements in §63.8 and applicable performance specification (PS - 7, PS - 8, PS - 9, or PS - 15) in Appendix B to part 60 of this chapter
(a) you must conduct the CEMS performance evaluation during the period of the initial compliance demonstration according to the applicable requirements in §63.8 and the applicable performance specification (PS - 7, PS - 8, PS - 9, or PS - 15) of 40 CFR part 60, Appendix B;
(b) you must install, operate, and maintain the CEMS according to the applicable performance specification (PS - 7, PS - 8, PS - 9, or PS - 15) of 40 CFR part 60, Appendix B; and
(c) you must collect CEMS emissions data at the inlet and outlet of each control device during the period of the initial compliance demonstration and determine the CEMS operating limit during the period of the initial compliance demonstration.
* * * * *
         14. By revising Table 4 in the appendix to Subpart ZZZZ as follows:
Subpart ZZZZ -- National Emission Standards for Hazardous Air Pollutants for Stationary Reciprocating Internal Combustion Engines
* * * * *
Table 4 to Subpart ZZZZ of Part 63 -- Requirements for Performance Tests
      [As stated in §§63.6610, 63.6611, 63.6620, and 63.6640, you must comply with the following requirements for performance tests for stationary RICE]
                                For each . . .
                    Complying with the requirement to . . .
                                You must . . .
                                  Using . . .
                 According to the following requirements . . .
1. 2SLB, 4SLB, and CI stationary RICE
a. Reduce CO emissions
i. Measure the O2 at the inlet and outlet of the control device; and
(1) Portable CO and O2 analyzer
(a) Using ASTM D6522 - 00 (2005)a (heated probe not necessary; single-point sampling) (incorporated by reference, see §63.14). Measurements to determine O2 must be made at the same time as the measurements for CO concentration.

ii. Measure the CO at the inlet and the outlet of the control device.
(1) Portable CO and O2 analyzer
(a) Using ASTM D6522 - 00 (2005)a (heated probe not necessary; single-point sampling) (incorporated by reference, see §63.14) or Method 10 of 40 CFR part 60, appendix A. The CO concentration must be at 15 percent O2, dry basis.
2. 4SRB stationary RICE
a. Reduce formaldehyde emissions
i. Sample at the centroid of the exhaust;

(a) Sampling sites must be located at the inlet and outlet of the control device.

ii. Measure O2 at the inlet and outlet of the control device;
(1) Method 3 or 3A or 3B of 40 CFR part 60, Appendix A, or ASTM Method D6522 - 00 (2005) (heated probe not necessary; single-point sampling).
(a) Measurements to determine O2 concentration must be made at the same time as the measurements for formaldehyde concentration.

iii. Measure moisture content at the inlet and outlet of the control device; and,
(1) Method 4 of 40 CFR part 60, Appendix A, or Test Method 320 of 40 CFR part 63, Appendix A, or ASTM D 6348 - 03
(a) Measurements to determine moisture content must be made at the same time and location as the measurements for formaldehyde concentration.

iv. Measure formaldehyde at the inlet and the outlet of the control device.
(1) Method 320 or 323 of 40 CFR part 63, Appendix A; or ASTM D6348 - 03[b], provided in ASTM D6348 - 03 Annex A5 (Analyte Spiking Technique), the percent R must be greater than or equal to 70 and less than or equal to 130
(a) Formaldehyde concentration must be at 15 percent O2, dry basis. Results of this test consist of the average of the three 1-hour or longer runs.
3. Stationary RICE
a. Limit the concentration of formaldehyde in the stationary RICE exhaust
i. Sample at the centroid of the exhaust;

(a) If using a control device, the sampling site must be located at the outlet of the control device.

ii. Determine the O2 concentration of the stationary RICE exhaust at the sampling port location;
(1) Method 3 or 3A or 3B of 40 CFR part 60, Appendix A, or ASTM Method D6522 - 00 (2005) (heated probe not necessary; single-point sampling).
(a) Measurements to determine O2 concentration must be made at the same time and location as the measurements for formaldehyde concentration.

iii. Measure moisture content of the stationary RICE exhaust at the sampling port location; and,
(1) Method 4 of 40 CFR part 60, Appendix A, or Test Method 320 of 40 CFR part 63, Appendix A, or ASTM D 6348 - 03
(a) Measurements to determine moisture content must be made at the same time and location as the measurements for formaldehyde concentration.

iv. Measure formaldehyde at the exhaust of the stationary RICE.
(1) Method 320 or 323 of 40 CFR part 63, Appendix A; or ASTM D6348 - 03[b], provided in ASTM D6348 - 03 Annex A5 (Analyte Spiking Technique), the percent R must be greater than or equal to 70 and less than or equal to 130
(a) Formaldehyde concentration must be at 15 percent O2, dry basis. Results of this test consist of the average of the three 1-hour or longer runs.
[a]You may also use Methods 3A and 10 as options to ASTM - D6522 - 00 (2005). You may obtain a copy of ASTM - D6522 - 00 (2005) from at least one of the following addresses: American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428 - 2959, or University Microfilms International, 300 North Zeeb Road, Ann Arbor, MI 48106.
[b]You may obtain a copy of ASTM - D6348 - 03 from at least one of the following addresses: American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428 - 2959, or University Microfilms International, 300 North Zeeb Road, Ann Arbor, MI 48106.

* * * * *
         15. In Method 306 of Appendix A by revising Sections 2.2.1, 6.1.4, and 8.0 as follows:
Method 306 -- Determination of Chromium Emissions From Decorative and Hard Chromium Electroplating and Chromium Anodizing Operations -- Isokinetic Method
* * * * *
      2.2.1  Total chromium samples with high chromium concentrations (>=35 ug/L) may be analyzed using inductively coupled plasma emission spectrometry (ICP) at 267.72 nm. Note: The ICP analysis is applicable for this method only when the solution analyzed has a Cr concentration greater than or equal to 35 ug/L or five times the method detection limit as determined according to Appendix B in 40 CFR part 136.  Similarly, inductively coupled plasma-mass spectroscopy (ICP-MS) may be used for total chromium analysis provided the procedures for ICP-MS analysis described in Method 6020 or 6020A (EPA Office of Solid Waste, publication SW-846) are followed.
* * * * *
	6.1.4  Operating and maintenance procedures for the sampling train are described in APTD - 0576 of Method 5. Users should read the APTD - 0576 document and adopt the outlined procedures. Alternative mercury-free thermometers may be used if the thermometers are, at a minimum, equivalent in terms of performance or suitably effective for the specific temperature measurement application.
* * * * *
      8.0  Sample Collection, Preservation, Holding Times, Storage, and Transport
Note: Prior to sample collection, consideration should be given to the type of analysis (Cr[+6] or total Cr) that will be performed. Which analysis option(s) will be performed will determine which sample recovery and storage procedures will be required to process the sample.
* * * * *
         16. In Method 306A of Appendix A by revising Section 8.2 as follows:
Method 306A  --  Determination of Chromium Emissions From Decorative and Hard Chromium Electroplating and Chromium Anodizing Operations
* * * * *
      8.2  Sample Recovery. After the train has been transferred to the sample recovery area, disconnect the tubing that connects the jar/impingers. The tester shall select either the total Cr or Cr[+6] sample recovery option. Samples to be analyzed for both total Cr and Cr[+6] shall be recovered using the Cr[+6] sample option (Section 8.2.2).
Note: Collect a reagent blank sample for each of the total Cr or the Cr[+6] analytical options. If both analyses (Cr and Cr[+6]) are to be conducted on the samples, collect separate reagent blanks for each analysis. Also, since particulate matter is not usually present at chromium electroplating and/or chromium anodizing operations, it is not necessary to filter the Cr[+6] samples unless there is observed sediment in the collected solutions. If it is necessary to filter the Cr[+6] solutions, please refer to Method 0061, Determination of Hexavalent Chromium Emissions from Stationary Sources, Section 7.4, Sample Preparation in SW-846 (see Reference 1).
* * * * *
         17. In Method 308 of Appendix A by revising Section 10.1.3 as follows:
Method 308  --  Procedure for Determination of Methanol Emission From Stationary Sources
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      10.1.3  Temperature Sensors. Calibrate against mercury-in-glass thermometers. An alternative mercury-free thermometer may be used if the thermometer is, at a minimum, equivalent in terms of performance or suitably effective for the specific temperature measurement application.
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         7. In Method 315 of Appendix A by revising Sections 6.1.1 and 10.5 and by redesignating Section 8.11 as 8.1 and revising as follows:
Method 315  --  Determination of Particulate and Methylene Chloride Extractable Matter (MCEM) From Selected Sources at Primary Aluminum Production Facilities
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	6.1.1  Sampling train. A schematic of the sampling train used in this method is shown in Figure 5 - 1, Method 5, 40 CFR part 60, Appendix A. Complete construction details are given in APTD - 0581 (Reference 2 in section 17.0 of this method); commercial models of this train are also available. For changes from APTD - 0581 and for allowable modifications of the train shown in Figure 5 - 1, Method 5, 40 CFR part 60, Appendix A, see the following subsections. Note: The operating and maintenance procedures for the sampling train are described in APTD - 0576 (Reference 3 in section 17.0 of this method). Since correct usage is important in obtaining valid results, all users should read APTD - 0576 and adopt the operating and maintenance procedures outlined in it, unless otherwise specified herein.  Alternative mercury-free thermometers may be used if the thermometers are, at a minimum, equivalent in terms of performance or suitably effective for the specific temperature measurement application. The use of grease for sealing sampling train components is not recommended because many greases are soluble in methylene chloride. The sampling train consists of the following components:
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      8.1  Pretest preparation. It is suggested that sampling equipment be maintained according to the procedures described in APTD - 0576. Alternative mercury-free thermometers may be used if the thermometers are at a minimum equivalent in terms of performance or suitably effective for the specific temperature measurement application.
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      10.5  Temperature sensors. Use the procedure in Section 10.3 of Method 2, 40 CFR part 60, Appendix A to calibrate in-stack temperature sensors. Dial thermometers, such as are used for the DGM and condenser outlet, shall be calibrated against mercury-in-glass thermometers. An alternative mercury-free thermometer may be used if the thermometer is, at a minimum, equivalent in terms of performance or suitably effective for the specific temperature measurement application.
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         8. In Method 316 of Appendix A by revising Section 10.5 as follows:
Method 316  --  Sampling and Analysis for Formaldehyde Emissions From Stationary Sources in the Mineral Wool and Wool Fiberglass Industries
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      10.5  Temperature gauges: Use the procedure in Section 4.3 of EPA Method 2 to calibrate in-stack temperature gauges. Dial thermometers, such as are used for the dry gas meter and condenser outlet, shall be calibrated against mercury-in-glass thermometers.  An alternative mercury-free thermometer may be used if the thermometer is, at a minimum, equivalent in terms of performance or suitably effective for the specific temperature measurement application.
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         9. In Method 321 of Appendix A by revising the definition for the term "Df" after equation (2) in Section 9.3.1 as follows:
Test Method 321 -- Measurement of Gaseous Hydrogen Chloride Emissions at Portland Cement Kilns by Fourier Transform Infrared (FTIR) Spectroscopy
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	9.3  * * *
	DF = Dilution Factor (Total flow/Spike flow). Total flow = spike flow plus effluent flow.
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