NR 440.647(6)(h)3.3. The rate of polymer production, Pp, shall be determined by dividing the weight of polymer pulled (in kg (lb)) from the process line during the performance test by the number of hours taken to perform the performance test. The weight of polymer pulled shall be determined by direct measurement or, subject to prior approval by the department, computed from materials balance by good engineering practice.

NR 440.647(6)(i)(i) The owner or operator shall determine continuous compliance with the temperature requirements in sub. (3) (b) 1. b. and 1. a. 2) by using the temperature monitoring equipment described in sub. (5) (a) 1. An average temperature shall be determined from measurements taken at least every 15 minutes every 3 hours while the vent stream is normally routed and constituted. Each 3-hour period constitutes a performance test.

NR 440.647(6)(j)(j) For purposes of determining compliance with sub. (3) (c) 1. b. 2), 3), 2. b. 2) or 3), the ethylene glycol concentration in either the cooling tower or the liquid effluent from steam-jet ejectors used to produce a vacuum in the polymerization reactors, whichever is applicable, shall be determined:

NR 440.647(6)(j)1.1. Using procedures that conform to the methods described in ASTM D2908-91, Standard Practice for Measuring Volatile Organic Matter in Water by Aqueous-Injection Gas Chromatography, incorporated by reference in s. NR 440.17 (2) (a) 37., except as provided in subd. 2.:

NR 440.647(6)(j)1.a.a. At least one sample per operating day shall be collected using the grab sampling procedures of ASTM D3370-95a, Standard Practices for Sampling Water, incorporated by reference in s. NR 440.17 (2) (a) 47. An average ethylene glycol concentration by weight shall be calculated on a daily basis over a rolling 14-day period of operating days, except as provided in subd. 1. b. and c. Each daily average ethylene glycol concentration so calculated constitutes a performance test. Exceedance of the standard during the reduced testing program specified in subd. 1. b. and c. is a violation of these standards.

NR 440.647(6)(j)1.b.b. For those determining compliance with sub. (3) (c) 1. b. 2) or 2. b. 2), the owner or operator may elect to reduce the sampling program to any 14 consecutive day period once every 2 calendar months, if at least 17 consecutive 14-day rolling average concentrations immediately preceding the reduced sampling program are each less than 0.10 weight percent ethylene glycol. If the average concentration obtained over the 14 day sampling during the reduced testing period exceeds the upper 95% confidence interval calculated from the most recent test results in which no one 14-day average exceeded 0.10 weight percent ethylene glycol, then the owner or operator shall reinstitute a daily sampling program. A reduced sampling program can be reinstituted if the requirements specified in this paragraph are met.

NR 440.647(6)(j)1.c.c. For those determining compliance with sub. (3) (c) 1. b. 3) or 2. b. 3) the owner or operator may elect to reduce the sampling program to any 14 consecutive day period once every 2 calendar months, if at least 17 consecutive 14-day rolling average concentrations immediately preceding the reduced sampling program are each less than 1.8 weight percent ethylene glycol. If the average concentration obtained over the 14 day sampling during the reduced test period exceeds the upper 95% confidence interval calculated from the most recent test results in which no one 14-day average exceeded 1.8 weight percent ethylene glycol, then the owner or operator shall reinstitute a daily sampling program. A reduced program can be reinstituted if the requirements specified in this paragraph are met.

NR 440.647(6)(j)2.2. Measuring an alternative parameter, such as carbon oxygen demand or biological oxygen demand, that is demonstrated to be directly proportional to the ethylene glycol concentration. The parameter shall be measured during the initial 14-day performance test during which the facility is shown to be in compliance with the ethylene glycol concentration standard whereby the ethylene glycol concentration is determined using the procedures described in subd. 1. The alternative parameter shall be measured on a daily basis and the average value of the alternative parameter shall be calculated on a daily basis over a rolling 14-day period of operating days. Each daily average value of the alternative parameter constitutes a performance test.

NR 440.647(7)(a)(a) Each owner or operator subject to the provisions of this section shall keep an up-to-date, readily-accessible record of the following information measured during each performance test and shall include the following information in the report of the initial performance test in addition to the written results of such performance tests as required under s. NR 440.08. Where a control device is used to comply with sub. (3) (a) 1. a. 4) only, a report containing performance test data need not be submitted, but a report containing the information in subd. 11. is required. Where a boiler or process heater with a design heat input capacity of 150 million Btu/hr or greater is used to comply with sub. (3) (a) a report containing performance test data need not be submitted, but a report containing the information in subd. 2. a. is required. The same information specified in this subsection shall be submitted in the reports of all subsequently required performance tests where either the emission control efficiency of a combustion device or the outlet concentration of TOC, minus methane and ethane, is determined.

NR 440.647(7)(a)1.a.a. The average firebox temperature of the incinerator (or the average temperature upstream and downstream of the catalyst bed), measured at least every 15 minutes and averaged over the performance test period, and

NR 440.647(7)(a)1.b.b. The percent reduction of TOC (minus methane and ethane) achieved by the incinerator, the concentration of TOC (minus methane and ethane) (ppmv, by compound) at the outlet of the control device on a dry basis or the emission rate in terms of kg TOC (minus methane and ethane) per Mg of product (lb TOC/ton) at the outlet of the control device, whichever is appropriate. If supplemental combustion air is used, the TOC concentration corrected to 3% oxygen shall be recorded and reported.

NR 440.647(7)(a)2.b.b. For boilers or process heaters with a design heat input capacity of less than 150 million Btu/hr, all 3-hour periods of operation during which the average combustion temperature was more than 28°C (50°F) below the average combustion temperature during the most recent performance test at which compliance was determined.

NR 440.647(7)(a)4.4. When an incinerator, boiler or process heater is used to demonstrate compliance with sub. (3) (a) 2., a description of the location at which the vent stream is introduced into the incinerator, boiler or process heater.