1. Opportunity Day Opportunity Day The 1 st Quarter of 2009 Performance Wednesday 27 May 2009 1

2. 2 1 st Quarter 2009 Operating Performance

3. 3 Comparison with same period of last year

4. 4 Project Name Type of Works Project Owner/ Client Work Value (MB) Uncompleted Work Value (MB) Project Period 1. Hinkong Gas PipelineE, P, CPTT Plc. 267.00 Apr 09Jun 10 2. Bio Diesel PlantE, P, CBangchak Bio fuel Co., Ltd. 757.00 274.03 Mar 08June 09 3. PTTAR-Reformer Complex II Project H2 LineE, P, CPTT Aromatic and Refining Plc. 219.00 127.02 Sep 08Sep 09 4. N/G Pipeline for 7 NGV Station ( Pack#5)E, P, CPTT Plc. 119.93 104.94 Jan 09July 09 5. Bangchak Pipeline Reroute Additional Work E, P, C PTT Plc. 315.00 9.90 74.03 9.90 May 08Mar 09 6. Construction of MRS and In-Line Block Valve, Suvanaphum - Payatai NGV. Pipeline Project E, P, CPTT Plc. 185.00 61.32 Nov 06Sep 07 7. Natural Gas Pipeline for small Industrial at Bang Pa-In state and existing area Ayudhya Province E, P, CPTT Natural Gas Distribution Co., Ltd. 135.99 40.60 May 08Feb 09 8. Design & engineering for SPE II Additional Work E, P, CSiam Polyethylene Co., Ltd. 52.41 30.80 5.58 25.58 Apr 08May 09 9. Supply and install fucture sleeve at corridor Pipeline Project Addtional Work E, P, CMap Ta Phut Olefins Co., Ltd. 25.50 19.32 15.05 7.73 May 08Nov 08 10. 1BCP-Main Outlet Pipe line to processE, P, CBangchak Petroleum Co., Ltd. 14.80 9.62 Sep 08Mar 09 10.2 BCP-Main Outlet Pipe line to processE, P, CPTT Plc. 12.24 7.95 Sep 08Mar 09 11. Polishing FilterE, P, CRCR Engineering Co., Ltd. 42.48 11.89 Aug 08Feb 09 12. CCC Interconnecting Pipeline ProjectE, P, CMap Ta Phut Olefins Co., Ltd. Thai Polyethylene Co., Ltd. Thai Industrial Gases Plc. 357.00 8.21 Apr 07Mar 09 TRC’s Projects on Hand as of 31 March 2009

5. Project Name Type of Works Project Owner/ Client Work Value (MB) Uncompleted Work Value (MB) Project Period 13. N/G Pipeline for 5 NGV StationE, P, CPTT Plc. 121.80 4.87 Oct 08Feb 09 14. Construction PHD Interconnecting Pipeline Project E, P, CEastern Fluid Transport Co., Ltd. 91.75 4.59 Mar 08Nov 08 15. PTT AMATA-Natural Gas Distribution NetworkE, P, CPTT Natural Gas Distribution Co., Ltd. 7.63 2.29 July 08Dec 08 16. Total Wp3 Wind Turbine Structural Support Frame E, P, CTOTAL E&P Myanmar 1.73 0.21 Dec 08Jan 09 Total 16 Projects 2,786.28 1,062.41 5

6. 6 Project Name Types of Works Project Owner/ Client Work Value (MB) Uncompleted Work Value (MB) Project Period 1. Malibu Khao Tao Project (Condominium structure and architecture) E,P,CM Talay Co., Ltd. (Joint Venture of Maneeya Group and Mr. Pravit Maleenont) 371.96229.91 Mar 08Nov 09 2. Bangchak Bio Diesel ProjectP,CTRC Construction Plc. (The Owner: Bangchak Bio Fuel Co., Ltd.) 100.7429.77 Sep 08Mar 09 3. N/G Pipeline Project - BangchakE,P,CTRC Construction Plc. (The Owner: Bangchak Petroleum Plc.) 14.069.14 Sep 08Mar 09 4. N/G Pipeline Project - BangchakE,P,CTRC Construction Plc. (The Owner: PTT Plc.) 11.637.56 Sep 08Mar 09 5. Civil Construction of TPE/HDPE (Package 1) E,P,CThai Polyethylene Co., Ltd. 36.532.66 May 08Apr 09 Total 5 Projects534.92279.04 SKW’s Projects on Hand as of 31 March 2009 TRC 16 Projects1,062.41 MB SKW 5 Projects 279.04 MB Less 3 Join Projects (46.47) MB Total Backlog 18 Projects1,294.98 MB 1 st Qtr Backlog Conclusion + Oman Project 800 M (60% of USD 38 Million) 2,095 MB

7. 7 Projects from Project Development and Investment Division

8. Status Update RegionProjectStatus ThailandSPP LadkrabangC.O.D 2012 OmanPetrogas RimaContract value of USD 38 million. TRC is awarded NamibiaDesalination plantTRC consortium is one of the short listed CambodiaStung MeteukForeign investors show strong interests. The MoU is expected very shortly NigeriaAmazon Energy as potential partner The status of the projects are being monitoring closely

9. Cambodia: Stung Meteuk  EGAT meeting on Power Development Plan and Power Purchase Program from Neighboring Countries  Negotiating with foreign investors, MoU is expected in a very near future

10. Business Partner: Clough Clough Highlight: Full Project Life Cycle Solutions Capability 10  JV Agreement is expected to be signed early of June  The newly established JV company will lever TRC’s capability to venture to a new business segment (off-shore platform / off-shore piping) where margin is higher and competitors are less  Many opportunities in Thailand’s neighbor countries such as M-9 field in Myanmar, where PTTEP is the owner and the operation is expected to commence soon

11. Oman: Petrogas Rima Project  Scope of work:  Engineering, Procurement, Construction, Load out, Transportation, and Hook-up of Production Flow Lines and Water Injection Flow Lines for Rima Satellites Small fields Total of drilling well 72 wells Distance between site10-30 km.  Contract value is USD 38 million

12. Namibia: Desalination Plant in Swakopmund region  TRC and its Thai strategic partner as well as strategic Namibia partner formed a strong consortium to pursue this opportunity  It is official that the consortium is short-listed (pre-qualified) to submit a full proposal in September ‘09  The desalination plant has a proposed capacity of 25 ml per day with full expansion of 80 ml per day utilizing R-O technology

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