The objectives of this project are to collect informations on the operation, maintenance, and audit of continuous emission monitoring systems (CEMS) by the stationary sources and local environmental protection bureaus (EPBs), to search the latest foreign CEMS legislations, to analyze the achievement of the CEMS management by the EPA and EPBs, and to revise the CEMS legislation in order to improve the management of CEMS. The CGA and data verification audit have been thoroughly applied to 20 selected stacks. The relative errors (RAs) between the audits on input signal and output signal of all selected stacks are in a reasonable range. In the parallel check on output signals, the RAs of all selected stacks, except the SO2 signal of Taoyan NanYa Chingsing plant, are within the required 5% limit. In the CGA, the RAs of all selected stacks fulfil the required 15% limit. Combined with CGA, data verification audit, and the system and other operation audits, the overall grade of Taoyan Hsin Lung Incinerator P001 is on the top of 20 selected stacks. On the contrary, Hsinchu Chang Chun Resin Plant P201 is in the bottom. In the system and operation audits without CGA nor data verification audit, 40 stacks were selected. The overall grade of Taoyan Kuo Kuang power plant P001 is on the top. However, Miaoli Tung Ho Steel P001 is in the bottom. By and large, problems can be found in the installation and management of CEMS in all 60 selected stacks. Among those, the integrity and correctness of the documents are the most difficult part to be complied with. The results of zero/span shift check and opacity audit on some selected stacks show that the CEMS calibrations are qualified, however the RAs of opacity audit on middle values are better than those of higher and lower values. From the results of Shewhart table analysis on 720 sets NOX, O2, SO2, CO, and OP data each of 28 selected stacks, some plants need to improve the quality of QA/QC on CEMS and data management. Reaudits have been done in three categories: (1) 52 selected stacks by telephone tracks, (2) 8 remained stacks which have serious problems by field reaudits, and (3) 8 selected stacks which have serious problems in the fiscal year of 2004 by field reaudits too. All these plants have done some improvements already. Besides, two seminars regarding the common CEMS problems were held at Taipei and Tainan, respectively, in August, 2005. More than 100 representatives from the CEMS installed plants attended each seminar and discussed the issues passionately. The documents of 19 local EPBs and 38 stacks (2 stacks for each EPB) were chosen to be audited. The document integrity of Tainan county is the best (93%), however, the same of Taichung city, Yilan county, Taipei county, and Chilung city are poor (< 50%). The missed information problem on the permission documents is serious for Taichung city. The major problem on CEMS managements is lacking the Standard Operation Procedure (SOP) on ineffective data audit (84%). The project team has developed a SOP with audit tables to train the officers of EPBs. In order to assist EPBs to operate, maintain, and upgrade the CEMS internet system, the project team has accomplished 22 issues, covering 17 EPBs, by telephone instruction or field assistance. The team has also assist all selected EPBs to upgrade the new CEMS internet system version of 2005. Besides, two seminars regarding the CEMS audit and management were held at Taipei and Yilan in May and November, 2005, respectively. Close to 100 officers and consultants from the EPBs attended each seminar and discussed the audit problems and legislation’s feasibilities enthusiastically. For the revision of the CEMS legislation, the latest informations from the US, Germany, and Japan have been searched. Among those, “the solution to the low SOX and NOX concentration CEMS data” from the US and “the secured CEMS internet system” from Germany are very valuable. A new version of the revised CEMS legislation has been drafted. The first advisory committees meeting was held in August, 2005. the agenda include the feasibility study on the mergence of the appendices of CEMS legislation and standard methods of continous analysis, the feasibility study on the adoption of the Predictive Emission Monitoring System (PEMS), and the planning on the revision of CEMS legislation. The second advisory committees meeting was held in November, 2005. the agenda cover the planning on enhanced management of the CEMS hardware and software and the cost-benefit analysis on the historical CEMS projects funded by the EPA and EPBs. Regarding the later, the team has developed a series of cost-benefit indices and found that the CEMS projects have accomplished a great job.

Continuous Emission Monitoring System (CEMS), Legislation Revisions, Audit