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B.S. SPONGE PRIVATE LIMITED Village: Taraimal, Tehsil: Gharghoda, District: Raigarh, (C.G.) REIA Report for the Proposed Mini Integrated Steel Plant Chapter – 4 TABLE 4.2.3 CHARACTERISTICS OF SANITARY WASTE WATER (UNTREATED) PARAMETER CONCENTRATION pH 7.0 – 8.5 BOD COD TDS 200 – 250 mg/l 300 – 400 mg/l 800 – 900 mg/l TABLE 4.2.4 CHARACTERISTICS OF BOILER BLOWDOWN PARAMETER CONCENTRATION pH 9.5 – 10.5 TDS 1000 mg/l TABLE 4.2.5 CHARACTERISTICS OF COOLING TOWER BLOWDOWN PARAMETER CONCENTRATION pH 7.0 - 8.0 TDS 1000 mg/l TABLE 4.2.6 CHARACTERISTICS OF DM PLANT REGENERATION WATER PARAMETER CONCENTRATION pH 4 – 10 TDS 4.3 PREDICTION OF IMPACTS DUE TO NOISE 5000 – 6000 mg/l 4.3.1 PREDICTION OF IMPACT DUE TO THE PROPOSED ACTIVITY The sound pressure level generated by noise source decreases with increasing distance from the source due to wave divergence. An additional decrease in sound pressure level with distance from the source is expected, due to atmospheric effect or its interaction with objects in the path of transmission. For PIONEER ENVIRO 4 - 12 <strong>Environment</strong>al Impact Assessment Report Laboratories & Consultants Pvt. Ltd.
B.S. SPONGE PRIVATE LIMITED Village: Taraimal, Tehsil: Gharghoda, District: Raigarh, (C.G.) REIA Report for the Proposed Mini Integrated Steel Plant Chapter – 4 hemispherical sound wave propagation through homogeneous loss free medium, one can estimate noise levels at various locations, due to different sources using model based on first principle, as per the following equation: Lp2 = Lp1 – 20 Log (r2/r1) - Ael.2 Where Lp1 and Lp2 are sound pressure levels at points located at distance r1 and r2 from the source and Ae1.2 is the excess attenuation due to environmental conditions. Combined affect of all the sources then can be determined at various locations by logarithmic addition. It is first approximation one can assume that for all general population in the villages, every noise source in the plane is a point source. The average equivalent sound power level of such a point source can be estimated for different distances and directions from hypothetical source by applying following equation: Lp = Lw - 20 Log r – Ae – 8 Where Lw is the sound power level of the source, Lp is sound pressure level at a distance r and Ae is environmental attenuation factor. A combined noise level Lp (total) of all the sources at a particular place is given by: Lp(total) = 10 Log (10 Lp1/10) + 10 (Lp2/10) + ---------) Major noise generating sources were identified from the proposed activity for prediction purposes. The major noise generating sources are STG, DG set & compressors. The predictions have been made to represent the worst case. The noise levels at various distances were calculated using wave divergence model. The model was run for ascertaining the areas where we could get the noise levels of 35, 45, 50,55,60,65, and considering the other noise generating sources from the plant. Silencers will be provided to the DG Sets. All machinery will be manufactured keeping in view of the MOEF/OSHA standards on Noise levels. The Ambient Noise levels will be within the standards prescribed by MOE&F, GOI vide Notification dated 14-02-2000 under the Noise pollution (regulation & control) Rules, 2000. 4.3.2. PREDICTION OF IMPACTS ON COMMUNITY Day and Night sound pressure levels, Ldn is often used to describe the community noise exposure which include 10 dBA night time penalty. As the nearest human settlement is about 2.5 Km. from the plant, the impact of noise on general population would be insignificant. PIONEER ENVIRO 4 - 13 <strong>Environment</strong>al Impact Assessment Report Laboratories & Consultants Pvt. Ltd.
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DATA ON EXISTING PLANT (TOR # 15) A
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17 Permission for the drawl of 3,80
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bs sponge private limited - India Environment Portal

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