NR 463.07(6)(b)3.3. Once an exceedance occurs as indicated through foam blanket thickness monitoring, the original monitoring schedule of once every hour shall be resumed. A subsequent decrease in frequency shall follow the schedule laid out in subd. 2. For example, if an owner or operator had been monitoring an affected source once every 8 hours and an exceedance occurs, subsequent monitoring would take place once every hour of tank operation. Once an exceedance does not occur for 40 hours of tank operation, monitoring may occur once every 4 hours of tank operation. Once an exceedance does not occur for 40 hours of tank operation on this schedule, monitoring may occur once every 8 hours of tank operation. NR 463.07(6)(c)(c) Once a bath solution is drained from the affected tank and a new solution added, the original monitoring schedule of once every hour shall be resumed, with a decrease in monitoring frequency allowed following the procedures of par. (b) 2. and 3. NR 463.07(7)(a)(a) If the owner or operator of an affected source uses both a fume suppressant and add-on control device and both are needed to comply with the applicable emission limit, monitoring requirements as identified in subs. (1) to (6), and the work practice standards of Table 1 of this subchapter, apply for each of the control techniques used. NR 463.07(7)(b)(b) If the owner or operator of an affected source uses both a fume suppressant and add-on control device, but only one of these techniques is needed to comply with the applicable emission limit, monitoring requirements as identified in subs. (1) to (6), and work practice standards of Table 1 of this subchapter, apply only for the control technique used to achieve compliance. NR 463.07(8)(b)(b) After receipt and consideration of an application for an alternative monitoring method, the department may approve alternatives to any monitoring methods or procedures of this subchapter including, but not limited to, the following: NR 463.07(8)(b)1.1. Alternative monitoring requirements when installation or use of monitoring devices specified in this subchapter would not provide accurate measurements due to interferences caused by substances within the effluent gases. NR 463.07(8)(b)2.2. Alternative locations for installing monitoring devices when the owner or operator can demonstrate that installation at alternate locations will enable accurate and representative measurements. NR 463.07 HistoryHistory: Cr. Register, September, 1997, No. 501, eff. 10-1-97; CR 05-039: am. (1) (a), (b), (5) (a), (b) (intro.) and (7) (b), cr. (1) (c) and (d) Register February 2006 No. 602, eff. 3-1-06; CR 04-023: am. (intro.), (5) (b) 2., (6) (b) 2., (7) (a), (8) (b) (intro.) and 1. Register December 2008 No. 636, eff. 1-1-09. NR 463.08NR 463.08 Alternative control devices. An owner or operator who uses an air pollution control device not listed in s. NR 463.07 shall submit a description of the device, test results collected in accordance with s. NR 463.09 (3) verifying the performance of the device for reducing chromium emissions to the atmosphere to the level required by this subchapter, a copy of the operation and maintenance plan referenced in s. NR 463.05 including proposed work practice standards, and appropriate operating parameters that will be monitored to establish continuous compliance with the standards in s. NR 463.04. The monitoring plan submitted identifying the continuous compliance monitoring is subject to the department’s approval. NR 463.09NR 463.09 Performance test requirements and test methods. NR 463.09(1)(1) Performance test requirements. Performance tests shall be conducted using the test methods and procedures in this section and s. NR 460.06. The test plan to be followed shall be made available to the department prior to the testing, if requested. Performance test results shall be documented in complete test reports that contain all of the following information: NR 463.09(1)(c)(c) A description of sampling and analytical procedures and any modifications to standard procedures. NR 463.09(1)(f)(f) Records of operating conditions during the test, preparation of calibration standards, and calibration procedures. NR 463.09(1)(g)(g) Raw data sheets for field sampling and field and laboratory analyses. NR 463.09(2)(2) Use of operation permit performance test results for compliance demonstration. NR 463.09(2)(a)(a) If the owner or operator of an affected source conducts performance testing at startup to obtain an operation permit under ch. NR 407, the results of the testing may be used to demonstrate compliance with this subchapter if all of the following conditions are met: NR 463.09(2)(a)1.1. The test methods and procedures identified in sub. (3) were used during the performance test. NR 463.09(2)(a)2.2. The performance test was conducted under representative operating conditions for the source.