(a) You must install, calibrate, maintain, and operate a device to continuously measure the temperature of the flue gas stream at the inlet of each particulate matter control device.

(b) Calculate the temperature of the flue gas stream in 4-hour block arithmetic averages.

(c) Determine the maximum demonstrated particulate matter control device temperature for each particulate matter control device during the initial performance test for dioxins/furans and each subsequent performance test specified in § 60.6525 during which you achieve compliance with the dioxins/furans emission limit. The maximum demonstrated particulate matter control device temperature is the highest 4-hour arithmetic average temperature achieved at the particulate matter control device inlet during four consecutive hours during the most recent test. If a subsequent dioxins/furans performance test is being performed on only one municipal waste combustor as specified in § 60.6535, you may apply the same maximum particulate matter control device temperature from the tested facility for all the similarly designed and operated municipal waste combustors.