proposed integrated complex for delhi judicial academy
proposed integrated complex for delhi judicial academy proposed integrated complex for delhi judicial academy
Rapid Environmental Impact Assessment (REIA) Study for Proposed Integrated Complex for Delhi Judicial Academy, National Law School, and National Institute for Mediation & Conciliation at Dwarka, New Delhi The existing Ambient Air Quality (AAQ) status has been monitored for SPM, RPM, SO 2 , NOX and CO representing the criteria pollutants. SPM & RPM at each station has been monitored on 24 hourly basis and CO on 8 hourly basis. Pre calibrated high volume samplers have been used for monitoring of the existing AAQ status. The Respirable particulate matter (RPM) was separated through cyclone and measured by gravimetric method similar to SPM. SO 2 and NOx were analyzed by Colorimetric method. Methodologies adopted for sampling and analysis were, as per the approved methods of Central Pollution Control Board (CPCB). Maximum, minimum, average and percentile values have been computed from the raw data collected at all individual sampling stations to represent the ambient air quality status of the study area. 4.5.3 Analysis of Baseline Concentrations The details about sampling locations identified during study period are presented in Table 4.4. The locations have been identified keeping in view predominant wind direction prevailing during study period, sensitivity, human settlement, construction activities, traffic concentration, and others. The results of ambient air quality within the study area monitored between March and May 2006 are presented in Table 4.5. And percentile distribution of SPM, RPM, SO 2 and NOx are presented in Table 4.6. The average concentration of SPM, RPM, SO 2 , CO, and NOx monitored during the study period were found to be less than NAAQS prescribed for residential areas at most of the locations. • Suspended Particulate Matter - SPM Suspended particulate matter monitored in the study area showed 98 th percentile values in the range of 172 – 195 µg/m 3 . The highest value of SPM level (215 µg/m 3 ) was observed at AAQ4 station. The average SPM concentration at all the four locations is well within the limit prescribed for residential areas. • Respirable Particulate Matter - RPM RPM values monitored at 4 locations showed 98 th percentile values in the range of 60 – 76 µg/m 3 . Highest value of 81 µg/m 3 was recorded at AAQ3 station. However, the average values at most of the locations are well within the limits for residential areas. • Sulphur dioxide - SO 2 64
Rapid Environmental Impact Assessment (REIA) Study for Proposed Integrated Complex for Delhi Judicial Academy, National Law School, and National Institute for Mediation & Conciliation at Dwarka, New Delhi 98 th percentile value of Sulphur dioxide in the study area from the monitored data was in the range of 9 – 13 µg/m 3 . Maximum value of sulphur dioxide of 16 µg/m 3 obtained near the sampling location AAQ4. The values of SO 2 monitored in the study area are well within the limits of NAAQ standards for residential as well as sensitive areas. • Oxides of Nitrogen – NOx Ambient air quality status monitored for nitrogen oxides in the study area were in the range with 98 th percentile values between 19 – 22 µg/m 3 . A maximum value of 25 µg/m 3 was prevailing at the time of sampling at AAQ2. The values of NOx monitored in the study area are well within the limits of NAAQ standards for residential as well as sensitive areas. • Carbon Monoxide - CO CO concentration at all the locations was found to be less than 1 ppm. Table 4.4 Sampling Locations for Ambient Air Quality Monitoring S. No. Station Code LOCATION DIRECTIO N DISTANCE (Km) w.r.t. proposed project site 1. AAQ1 Project site - - 2. AAQ2 Near DDA Flats, Sector 16B, Pkt 3C, Phase II 3. AAQ3 Near DDA MIG, Sector 17, Plot A, Phase II W S 0.5 km 0.7 km 4. AAQ4 Near Metro View Apartments, SFS Flats, Sector 13, Pkt B, Phase II NE 1 km 65
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Rapid Environmental Impact Assessment (REIA) Study <strong>for</strong> Proposed Integrated Complex <strong>for</strong> Delhi Judicial Academy,<br />
National Law School, and National Institute <strong>for</strong> Mediation & Conciliation at Dwarka, New Delhi<br />
98 th percentile value of Sulphur dioxide in the study area from the monitored data was in<br />
the range of 9 – 13 µg/m 3 . Maximum value of sulphur dioxide of 16 µg/m 3 obtained near the<br />
sampling location AAQ4. The values of SO 2 monitored in the study area are well within the<br />
limits of NAAQ standards <strong>for</strong> residential as well as sensitive areas.<br />
• Oxides of Nitrogen – NOx<br />
Ambient air quality status monitored <strong>for</strong> nitrogen oxides in the study area were in the range<br />
with 98 th percentile values between 19 – 22 µg/m 3 . A maximum value of 25 µg/m 3 was<br />
prevailing at the time of sampling at AAQ2. The values of NOx monitored in the study area are<br />
well within the limits of NAAQ standards <strong>for</strong> residential as well as sensitive areas.<br />
• Carbon Monoxide - CO<br />
CO concentration at all the locations was found to be less than 1 ppm.<br />
Table 4.4<br />
Sampling Locations <strong>for</strong> Ambient Air Quality Monitoring<br />
S. No. Station<br />
Code<br />
LOCATION<br />
DIRECTIO<br />
N<br />
DISTANCE<br />
(Km)<br />
w.r.t. <strong>proposed</strong> project site<br />
1. AAQ1 Project site - -<br />
2. AAQ2 Near DDA Flats, Sector<br />
16B, Pkt 3C, Phase II<br />
3. AAQ3 Near DDA MIG, Sector 17,<br />
Plot A, Phase II<br />
W<br />
S<br />
0.5 km<br />
0.7 km<br />
4. AAQ4 Near Metro View<br />
Apartments, SFS Flats,<br />
Sector 13, Pkt B, Phase II<br />
NE<br />
1 km<br />
65