7.2. SR 01-18-1994 - Laserfiche WebLink

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. Letter To: Mr. Stephen Rohlf. Building & Zoning Administrator. City of Elk River Re' FRS Solid Wa..re Facilitv I icense and ConditionallTser Pennit *1(7.10 A",licalinn~ renewal November 30. 1993 The following additional infonnation may also be of interest a. Emissions Testing e The most recent emissions test (stack test) was completed in November of 1992. Results of that testing were reported to the MPCA and to the City of Elk River. As has been the case with previous emissions testing, ERS was shown to be well below the established emission standards. Refer to attached March 9, 1993 letter. Mercury was the only one of the eight metals tested. There presently are no emission limitations for mercury or the other metals. However, one is being proposed for mercury. The measured emission rate for mercury was approximately 16 times less than the standard proposed in the current MPCA rule-making. At its March 15, 1993 meeting, the Elk River City Council waived the requirement to analyze for the seven other metals in November 1992 with the understanding that the complete series will be done in the next emission test in early 1994. The next emissions test is being planned for February of 1994. AS with prior emission tests, UP A will notify the City of the results. With the completion of this planned emission test, we will have completed emissions testing in all four seasons. e b. Proposed New Municipal Waste Combustor Regulations The Minnesota Pollution Control Agency (MPCA) is in the process of promulgating new municipal waste combustor regulations. UP A anticipates that these regulations will be finalized in 1994 and will then be making application for re-issuance of the pennit. There may be some plant modifications needed to meet anticipated stricter emission limitations such as a new sulfur dioxide (S02 ) emission limitation. There is no S02 emission limitation currently in place. However, ERS emits S02 at a very low rate relative to the rates of other power plants. c. The following parameters are limited by the MPCA and are monitored to demonstrate compliance: particulate matter, PCDDIPCDF, hydrogen chloride gas (HC!), carbon monoxide (CO), and opacity. ERS continues to operate well within the established emission limits. However, ERS has experienced exceedances of HCI and CO gases especially in the first several years since beginning commercial operation in August of 1989. Such occasional exceedances are due to equipment failures and excessive fuel variability. The numbers of exceedances have been reduced in the last e 2of3