Table 6 in ENVIRONMENTAL IMPACT ASSESSMENT (EIA) OF WORLD BANK FINANCED SIDDHIRGANJ 450 MW COMBINED CYCLE POWER PLANT (CCPP) PROJECT SIDDHIRGANJ, NARAYANGAJ

Table 6 (C) - Emissions Guidelines (in mgłNm 3 or as indicated) for Boiler Note: - Guidelines are applicable for new facilities. - EA may justify more stringent or less stringent limits due to ambient environment, technical and economic considerations provided there is compliance with applicable ambient air quality standards and incremental impacts are minimized. - For projects to rehabilitate existing facilities, case-by-case emission requirements should be established by the EA considering (i) the existing emission levels and impacts on the environment and community health, and (ii) cost and technical feasibility of bringing the existing emission levels to meet these new facilities limits. - EA should demonstrate that emissions do not contribute a significant portion to the attainment of relevant ambient air quality guidelines or standards, and more stringent limits may be required. Combustion Technology ł Fuel BoilerParticulate Matter (PM) NDA DASulfur Dioxide (SO 2) NDA DANitrogen Oxides (NOx) NDADADry Gas, Excess O 2 Content (%)Natural GasN/AN/AN/AN/A2402403%Other Gaseous Fuels50304004002402403%Liquid Fuels (Plant>50 MWth to <600 MWth)5030900 – 1,500 a4004002003%Liquid Fuels (Plant>ł=600 MWth)5030200 – 850 b2004002003%Solid Fuels (Plant>50 MWth to <600 MWth)5030900 – 1,500 a400510 c Or up to 1,100 if volatile matter of fuel <10%2006%Solid Fuels (Plant>ł=600 MWth)5030200 – 850 b2006% General notes: - MWth = Megawatt thermal input on HHV basis; N/A = not applicable; NDA = Non-degraded airshed; DA = Degraded airshed (poor air quality); Airshed should be considered as being degraded if nationally legislated air quality standards are exceeded or, in their absence, if WHO Air Quality Guidelines are exceeded significantly; CFB = circulating fluidized bed coal-fired; PC = pulverized coalfired; Nm 3 is at one atmospheric pressure, 0 degree Celsius; MWth category is to apply to the entire facility consisting of multiple units that are reasonably considered to be emitted from a common stack. Guideline limits apply to facilities operating more than 500 hours per year. Emission levels should be evaluated on a one hour average basis and be achieved 95% of annual operating hours. - a. Targeting the lower guidelines values and recognizing issues related to quality of available fuel, cost effectiveness of controls on smaller units, and the potential for higher energy conversion efficiencies (FGD may consume between 0.5% and 1.6% of electricity generated by the plant). b. Targeting the lower guidelines values and recognizing variability in approaches to the management of SO 2 emissions (fuel quality vs. use of secondary controls) and the potential for higher energy conversion efficiencies (FGD may consume between 0.5% and 1.6% of electricity generated by the plant). Larger plants are expected to have additional emission control measures. Selection of the emission level in the range is to be determined by EA considering the project’s sustainability, development impact, and cost-benefit of the pollution control performance. c. Stoker boilers may require different emissions values which should be evaluated on a case-by-case basis through the EA process. Comparison of the Guideline limits with standards of selected countries / region (as of August 2008): - Natural Gas-fired Boiler – NOx o Guideline limits: 240 o EU: 150 (50 to 300 MWth), 200 (> 300 MWth) - Solid Fuels-fired Boiler - PM o Guideline limits: 50 o EU: 50 (50 to 100 MWth), 30 (> 100 MWth), China: 50, India: 100 - 150 - Solid Fuels-fired Boiler – SO 2 o Guideline limits: 900 – 1,500 (Plant> 50 MWth to <600 MWth), 200 – 850 (Plant ≥ 600 MWth) o EU: 850 (50 – 100 MWth), 200 (> 100 MWth) o US: 180 ng/J gross energy output OR 95% reduction (≈ 200 mg/Nm3 at 6%O 2 assuming 38% HHV efficiency) o China: 400 (general), 800 (if using coal <12,550 kJ/kg), 1,200 (if mine-mouth plant located in non-double control area of western region and burning low S coal (<0.5%)) Source: EU (LCP Directive 2001/80/EC October 23 2001), US (NSPS for Electric Utility Steam Generating Units (Subpart Da), Final Rule – June 13, 2007), China (GB 13223-2003)