Minutes of the 37th Meeting of the Expert Appraisal Committee ...

will be partly treated in ETP and STP and treated water will be reused in the process, dust suppressionsystems and for plantations/ greenbelt development. About 300 m 3 /hr of water will be released from theCaptive Power Plant and smelter will be zero discharge.The main solid waste from the proposed smelter will be Spent Pot Lining (SPL), which will be initiallydisposed off to secured landfill and in due course will explore consumption in cement/steel industries.The collection of bottom ash and HCSD system for ash disposal will be in dry form.MoU for fly ashutilization was signedwith M/s Ultratech cement. The dross and anode buts generated in the process willbe recycled or will be sold to authorized reprocessors. The organic portion of solid waste generated inthe STP will be composted and used as manure in greenbelt development.Acoustic enclosures will beprovided wherever required to control the noise level below 85 dB(A). Wherever, it is not possibletechnically to meet required noise level, personal protective equipments will be provided to the workers.The project site falls in seismic zone III and the geotechnical studies were conducted by IIT Kharagpur.The Committee deliberated on the issues raised during the Public Hearing / Public Consultationmeeting conducted by the Orissa Pollution Control Board (WBPCB) on 2 nd March 2012. The issuesraised in the public hearing were regarding provision of employment to local people, industrial trainingcentre, pollution control measures, drinking water facility, green belt development etc. which wereaddressed in the EIA/EMP report.After detailed deliberation, the Committee recommended the project for environmental clearancesubject to submission of rechecked energy balance which has been submitted and stipulation offollowing specific conditions along with other environmental conditions:i. All the streams passing through the project site shall not be disturbed w.r.t their quantity andquality of flow.ii.iii.iv.Ministry of Environment and Forests shall regularly be informed about the source and quantity ofAlumina procured from captive/indigenous/imported sources.Alumina shall be obtained only from those refineries, which have been accorded environmentalclearance by the Ministry of Environment and Forests.The gaseous emissions (PM, SO 2 , NO X , PAH, HC, VOCs and Fluoride) from various processunits shall conform to the standards prescribed by the concerned authorities from time to time.The SPCB may specify more stringent standards for the relevant parameters keeping in view thenature of the industry and its size and location. At no time, the emission levels shall go beyondthe prescribed standards. In the event of failure of any pollution control system adopted by theunit, the respective unit shall not be restarted until the control measures are rectified to achievethe desired efficiency. The particulate emissions from the bake oven plant shall not exceed 50mg/Nm 3 .v. Particulate fluoride emissions shall not be more than 0.65 mg/Nm 3 and fugitive particulate fluorideemissions from pot room shall not be more than 1.85 mg/Nm 3 .vi.vii.viii.Space shall be provided for installation of FGD in futureThe poly-aromatic hydrocarbons (PAH) from the carbon plant (anode bake oven) shall notexceed 2 mg/Nm 3 . The data on PAH shall be monitored quarterly and report submitted regularlyto the Ministry/Regional Office at Bhubaneswar and SPCB.In-plant control measures like fume extraction and dust extraction system for controlling fugitiveemissions from all the material handling/transfer points shall be provided to control dustemissions. Fugitive Fluoride emissions from the pot room and in the forage around the smeltercomplex shall be monitored and data submitted regularly to the Ministry’s Regional Office atBhubaneswar and SPCB. Further dry scrubbing system to control the emissions from the potlines shall be provided.