42.1 Average Gaseous Composition of Dry Air in the Troposphere National Ambient Air Quality Standards (NAAQS) 628

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1 Table No. Contents Page 42. ENVIRONMENT 42.1 Average Gaseous Composition of Dry Air in the Troposphere National Ambient Air Quality Standards (NAAQS) State of Ambient Air Quality in Major Cities of Tamil Nadu (a) State of Ambient Air Quality in Chennai City Ambient Noise Standards as prescribed by Pollution Control Board Emission Limits for Diesel Driven Vehicles National Ambient Air Quality Monitoring, Chennai Summary Status of Pollution Control in 17 Categories of Industries in Tamil Nadu Analytical Output (Water) of Tamil Nadu Pollution Control Board Laboratories Number of Industries visited for Air Survey and Number of AAQS/SM Samples Collected Number of Goods and Transport Vehicles Tested and Emission level Recorded 634

2 ENVIRONMENT 627 Gas 42. ENVIRONMENT 42.1 AVERAGE GASEOUS COMPOSITION OF DRY AIR IN THE TROPOSPHERE Percent by Volume (%) By Weight Parts Per Million (ppm) Nitrogen Oxygen Argon Carbondioxide Neon Helium Methane - - Krypton Hydrogen Xenon Ozone - -

3 628 ENVIRONMENT 42.2 NATIONAL AMBIENT AIR QUALITY STANDARDS (NAAQS) Pollutant Sulphur Dioxide (SO 2) Nitrogen Dioxide (NO 2) Particulate matter (Size less than 10 μm) or PM10 Particulate matter (Size less than 2.5 μm) or PM2.5 Time Weighted Average CONCENTRATION IN AMBIENT AIR (in g/m 3 ) Industrial, Ecologi Residential cally Method of Rural & Sensitive Measurement Other Areas Area Annual * Inproved West & Geake, Ultraviolet fluroscence 24 Hours ** Annual * Hours ** Modified Jacob & Hochheiser (Na-Arsenite) Chemiuminescence Annual * Gravimetric, TEOM, Beta attenuation 24 Hours ** Annual * Gravimetric, TEOM, Beta attenuation 24 Hours ** Ozone (O 3) 8 Hours * UV photometric, 1 Hour Chemiuminescence chemical method Lead (Pb) Annual * ASS / ISP method after Carbon Monoxide CO) Ammonia (NH 2) Benzene (C 2H 2) Benzo (a) Pyene (BaP)- particulate phase only 24 Hours ** 1 1 sampling or EPM 2000 or equivalent filter paper ED-XRF using Tefon filter Annual * 2 2 Non-dispersive infra Red (NDIR) Spectroscopy 24 Hours ** 4 4 Annual * Chemiluminiscence, Indophenol s blue method 24 Hours ** Annual * 5 5 Gas Chromatography based continuous analyser. Adsorption and description followed by GC analysis Annual * 1 1 Solvent extraction followed HPLC / GC analysis Arsenic (As) Annual * 6 6 AAS/ CP method after sampling on EPM 2000 op equivalent filter paper Nickel(N) Annual * Note: * Annual Arithmetic Mean of minimum 104 measurements in a year taken twice a week 24 hourly at uniform interval.3 ** 24 hourly /8 hourly values should be met 98% of the time in a year. However 2% of the time, it may exceed but not on consecutive days. 1. Whenever and wherever two consecutive values exceeds the limit specified above for the respective category, it would be considered adequate reason to institute regular / continuous monitoring and further investigations.

4 ENVIRONMENT 629 I CHENNAI 42.3 STATE OF AMBIENT AIR QUALITY IN MAJOR CITIES OF TAMIL NADU (ANNUAL AVERAGE) (Unit 10 6 grams per cubic metre) City Category SO 2 NO x RSPM 1. Kathivakkam Industrial Manali Industrial Thiruvottiyur Industrial Anna Nagar Residential Adyar Residential Kilpauk Commercial* Thiyagarayanagar Commercial * Vallalar Nagar Commercial * II MADURAI Temporarily closed due to administrative reaons 4. M/s. Sucee Cars & Truks Industrial Madurai Corporation Office(SZ) Mixed Highways Buildings Residential III COIMBATORE 7. G.D.Matric School Mixed Ponnaiyarajapuram Residential SIDCO, Kurichi Industrial IV Salem 10. Sowdeswari College Building V Thoothukkudi Mixed Raja Agencies Industrial AVM Buildings Mixed SIPCOT Industrial *(Traffic-intersection)

5 630 ENVIRONMENT 42.3 (A) STATE OF AMBIENT AIR QUALITY IN CHENNAI CITY Station SO 2 g/m 3 NO x g/m 3 RSPM g/m 3 1. Anna Nagar Adyar Kilpauk * T. Nagar * Vallalar Nagar* Temporarily suspended due to administrative reasons. SO 2 : Sulphurdioxide NO X : Oxides of Nitrogen RSPM : Respirable Suspend Particulate Matter (<10 Micron size) * : Traffic intersection areas 42.4 AMBIENT NOISE STANDARDS AS PRESCRIBED BY POLLUTION CONTROL BOARD Area Day Time * db (A) Log db (A) Night Time ** db (A) Industrial Area Commercial Area Residential Area Silence Zone * Day Time : Hours to Hours (16 Hours) ** Night Time : Hours to Hours (08 Hours)

6 ENVIRONMENT EMISSION LIMITS FOR DIESEL-DRIVEN VEHICLES Test Light Absorption Co-efficient 1/m Standard Smoke Density Bosch Units Hartridge Units Free Acceleration Test NATIONAL AMBIENT AIR QUALITY MONITORING, CHENNAI Annual Mean Concentrations of Air Pollutants µg/m 3 Place Industrial Residential/ Mixed SO 2 NO x RSPM SO 2 NO x RSPM Chennai Madurai Coimbatore Salem Thoothukkudi Trichy Cuddalore Mettur

7 632 ENVIRONMENT 42.7 SUMMARY STATUS OF POLLUTION CONTROL IN 17 CATEGORIES OF INDUSTRIES IN TAMILNADU Category No. of Units (As on ) Complying Defaulting Closed 1. Aluminium Smelting Basic Drugs & Pharmaceuticals Manufacturing Chlor Alkali / Caustic Soda 4. Cement ( 200 TPD and above ) Copper Smelting Dyes and Dye Intermediate Fermentation (Distillery) Fertilizer Integrated Iron & Steel Leather Processing including Tanneries Oil Refinery Pesticide Formulation & Manufacturing 13. Pulp and paper ( 30 TPD and above ) Petrochemical Sugar Thermal Power Plants Zinc Smelting TOTAL

8 ENVIRONMENT ANALYTICAL OUTPUT (WATER) OF TAMIL NADU POLLUTION CONTROL BOARD LABORATORIES Year Trade Effluents (Received / Analysed) NUMBER OF INDUSTRIES VISITED FOR AIR SURVEY AND NUMBER OF AAQS/SM SAMPLES COLLECTED Period of Monitoring No. of Industries Number of Samples Collected AAQS SM

9 634 ENVIRONMENT NUMBER OF GOODS AND TRANSPORT VEHICLES TESTED AND EMISSION LEVEL RECORDED DURING Station Total Vehicles Diesel Within the limit Exceeding the limit Chennai Chengalpattu --- Since TNPCB are not monitoring Goods Kancheepuram vehicles w.e.f , the data are not available with TNPCB. --- Udhagamandalam Kattery Dindigul Palani TOTAL Station Total Vehicles Petrol Within the limit Exceeding the limit Chennai Chengalpattu Kancheepuram Udhagamandalam --- Since TNPCB are not monitoring Goods Kattery vehicles w.e.f , the data are not available with TNPCB. --- Dindigul Palani TOTAL Total (Diesel + Petrol) Station Total Vehicles Within the limit Exceeding the limit Chennai Chengalpattu Kancheepuram --- Since TNPCB are not monitoring Goods Udhagamandalam vehicles w.e.f , the data are not available with TNPCB. --- Kattery Dindigul Palani TOTAL Note : Since we are not monitoring goods vehicles w.e.f , hence the data are not available with TNPCB.