SET Announcements

=Translation= No. CK-05-0000-PO-L-0145 May 9, 2005 Subject: Additional Clarification No. 2 on Acquisition of Shares in Thai Tap Water Supply Co., Ltd. Attn: President of the Stock Exchange of Thailand Reference is made to the fact that CH. Karnchang Public Company Limited submitted an Additional Clarification on Resolutions of the Board of Directors and Information Memorandum on Acquisition of Shares in Thai Tap Water Supply Co., Ltd. The Company hereby submits this Additional Clarification No. 2 as follows: 1. In Item 1, regarding the establishment of the Companys branch office in Lao Peoples Democratic Republic, the Company hereby clarifies that such matter referred to only the establishment of the Company branch office in Lao Peoples Democratic Republic, while the registered and paid-up capital as notified therein was the information of CH. Karnchang Public Company Limited. 2. In Item 4, regarding the approval for the Company to sell and/or transfer the option to purchase ordinary shares in Thai Tap Water Supply Co., Ltd. which might occur in the future to other persons and/or legal entities, the Company hereby further clarifies such Item as per the following: Given the fact that the Company was searching for strategic partners with the ability to support the business and to serve as long-term investors, the search for strategic partners might have progress within this year, in this regard, the approval of the shareholders to sell such shares was sought ahead of schedule and the Company would give notice to the shareholders and the Stock Exchange, and comply with the regulations of the Stock Exchange immediately once the search for strategic partners was completed. The price of such sale shall not be lower than the agreed price of purchase from the existing shareholders (Thames Water International Services Ltd., Thames Water International (Thailand) Ltd., and Thames Water Public Company Limited, all of which the parent company is RWE Thames Water Public Company Limited, with its primary business relating to the public utilities in the field of energy and water supply, and the company profile is available at www. rwe.com). As a result of the sale of such shares, the Company would remain a majority shareholder, namely, the Company shall hold not less than 51 percent of the registered capital in such company. Furthermore, the Company would also promptly list such company on the Stock Exchange. Please be informed accordingly. Very truly yours, (Mr. Plew Trivisvavet) Chief Executive Officer ?? ?? ?? ?? 2