350 MW Pragati-II Combined Cycle Power Project of PPCL

Rapid Environmental ImpactAssessment Study of the Proposed350 MW Pragati-II Combined CyclePower Project of PPCLDoc. No.: CW-EN-9384-C-379-E-R-002Rev. No.: R0Issue Date: 21-02-2006Page No: 11 of 1611.2 WATER USE AND WATER QUALITYThe requirement of raw water for Construction purpose will be met through treatedsewage from Okhla Sewage Treatment Plant.During Operation Phase, the requirement of raw water will be met through existingtreated sewage from Okhla Sewage Treatment Plant. The concentrations of toxicsubstances in the treated wastewater will be well within the limits specified standardsfor Discharge of Effluents. As fresh water sources will not be tapped, therefore, therewill be no impact on ground water and fresh water system.11.3 DEMOGRAPHY AND SOCIO- ECONOMICS11.4 SOILManpower requirement for operating the facilities has been estimated as 90 persons.During the construction phase, the peak labour force requirement is estimated as300-350 persons, who will be available from local labour force. Thus, any impact ondemographic profile of the area through influx of job seekers is insignificant. Due toits low employment potential the proposed project will not put additional burden onother socio economic factors like price of essential commodities, occupationalpattern, health & educational facilities, transport and communication net work etc.As the proposed plant will be located at ash dyke, there will not be any loss oftopsoil. Handling of construction materials such as cement, sand etc. shall beconfined of the area of construction only. There will be no impact on the soil duringoperation.11.5 AIR QUALITYGeneration of Particulate Matter due to excavations, handling and transport of earthand construction materials, movement of construction equipment and traffic etc. willbe the main pollutants during the construction phase. However, the impact is likely tobe for short duration and limited to the construction site only.The maximum predicted incremental GLCs for NOx is 3.78 µg/m 3 and this would beobserved in the SE direction at a distance of 1 km.The resultant maximum GLC for NOx after implementation of CCPP II are estimatedto be 24.78 ugm/m3. This value is within the National Ambient Air Quality Standardsfor residential area.11.6 TERRESTRIAL ECOLOGYAs the study area is devoid of natural forests, the overall impacts on terrestrialecosystem (e.g. loss of flora and fauna) will be negligible. The site and area aroundthe site will experience some increase in pollution SPM. Deposition of fugitive duston pubescent leaves of nearby vegetation may lead to temporary reduction ofphotosynthesis. Such impacts would, however, be confined mostly to theconstruction phase and would also be regulated and minimized through adoption ofEXECUTIVE SUMMARYMANTEC CONSULTANTS (P) LTD., NEW DELHI