R 336.2003 Performance test criteria.

Rule 1003. (1) Performance tests must be conducted and data reduced according to the reference test methods listed in R 336.2004, unless the department does any of the following: (a) Specifies or approves, in specific cases, the use of a reference test method with minor changes in procedures or equipment. (b) Approves the use of an equivalent method. (c) Specifies or approves the use of an alternative method if an applicable reference test method does not exist for a specific air contaminant or source of air contaminant. (2) Unless otherwise approved by the department, a performance test must consist of a minimum of 3 separate samples of a specific air contaminant conducted within a 36-hour period that starts once the probe enters the stack. Any data measured within the 36-hour period must be recorded and provided to the department. Each of the 3 separate samples must be obtained while the source is operating at a similar production level, as described under subrule (3) of this rule. For the purpose of determining compliance with an applicable emission limit, rule, or permit condition, the arithmetic mean of results of the 3 samples must apply. If a sample is accidentally lost or conditions occur in which 1 of the 3 samples must be discontinued because of forced shutdown, failure of an irreplaceable portion of the sampling train, extreme meteorological conditions, or other circumstances beyond the owner's or operator's control, then compliance may, upon the approval of the department, be determined using the arithmetic mean of the results of 2 samples. (3) All performance tests must be conducted while the source of air contaminant is operating at maximum routine operating conditions, or under other conditions, within the capacity of the equipment, as may be requested by the department. Other conditions may include source operating periods of startup, shutdown, or other operations, excluding malfunction, specific to certain sources. Routine operating conditions must also include those specified within a permit to install or a permit to operate. The owner or operator shall make available to the department the records that may be necessary to determine the conditions of source operation that occurred during the period of time of the performance test. (4) For sources that are subject to an emission limitation calculated to 50% excess air, the multipoint, integrated sampling at every traverse point must be used with method 3, 3A, or 3Bfor gas analysis. For all other sources that require a determination of the molecular weight of the exhaust, an optional sampling procedure of method 3, 3A, or 3B may be used. Alternatives or modifications to procedures are subject to the approval of the department. (5) For reference test method 5B, which is described in R 336.2011, reference test method 5C, which is described in R 336.2012, and reference test method 5E, which is described in R 336.1014, the minimum volume per sample must be 30 cubic feet of dry gas corrected to standard conditions, 68 degrees Fahrenheit, 29.92 inches mercury. Minimum sample time must be 60 minutes, which may be continuous or a combination of shorter sampling periods for sources that operate in a cyclic manner. Smaller sampling times or sample volumes, when necessitated by process variables or other factors, may be approved by the department.