Announcement of 2005 Public Holidays of BCP

-Translation- 1000 /296/ 2547 15 December 2004 Subject: Announcement of Public Holidays of the year 2005 of BangchakPetroleum Public Company Limited To: President of The Stock Exchange of Thailand Bangchak Petroleum Public Company Limited would like to announce public holidays of the year 2005 as follows: 1.Monday 3rd January Substitution for New Year Day (Saturday 1st January) 2.Wednesday 23rd February Makha Bucha Day 3.Wednesday 6th April Chakri Memorial Day 4.Wednesday 13th April Songkran Festival Day 5.Thursday 14th April Songkran Festival Day 6.Friday 15th April Songkran Festival Day 7.Monday 2nd May Substitution for National Labor Day (Sunday 1st May) 8.Thursday 5th May Coronation Day 9.Monday 23rd May Substitution for Visakha Bucha day(Sunday 22nd May) 10.Friday 22nd July Buddhist Lent Day 11.Friday 12th August H.M. The Queen's Birthday 12.Monday 24th October Substitution for Chulalongkorn day(Sunday 23rd October) 13.Monday 5th December H.M. The King's Birthday 14.Monday 12th December Substitution for Constitution Day (Saturday 10th December) Please be informed accordingly Yours sincerely, -Signature- (Wattana Opanon-amata) Acting Senior Executive Vice President Corporate Administration and Information Technology Office of Secretary to Board of Directors Tel. (662) 335-4584