GADWAL ESTATES M/s SSC- DSR PROJECTS Estates Environmental Impact Assessment Team Labs and...
Transcript of GADWAL ESTATES M/s SSC- DSR PROJECTS Estates Environmental Impact Assessment Team Labs and...
GADWAL ESTATESM/s SSC- DSR PROJECTSSURVEY NOS. 387, 388 & 394 to 404,
KONDAKAL, SHANKARPALLY,RANGA REDDY DISTRICT, TELANGANA
1.Conceptual Plan2.EMP Report
Proposed Area Development Project
Submitted ByM/s SSC- DSR ProjectsPlot No. 901, #201, DSR Tranquil,Ayyappa Society Main Road,Madhapur, Hyderabad.
Studies & Documentation byM/s Team Labs and ConsultantsB-115 -117 & 509, Annapurna Block,Aditya Enclave, Ameerpet,Hyderabad- 500 038Phone: 91-040-23748555/616Fax : 91-040-23748666e-mail: [email protected]
SUBMITTED TOSTATE LEVEL ENVIRONMENT IMPACT ASSESSMENT AUTHORITY
TELANGANAGOVERNMENT OF INDIA
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants2 - 1
2.0 PROJECT DESCRIPTION/CONCEPTUAL PLANThis chapter details the need for the project, description of the proposed project andalternatives, and identifies the valued ecosystem components. The project is envisagedto provide housing to meet the growing demands for housing in the growing urban areaof Hyderabad falling in Kondakal, Shankarpally, Ranga Reddy District, Telangana.
2.1 THE PROJECT LOCATION:The project will be spread over an area of 69.99 Hectares in Survey No. 387, 388 & 394to 404, Kondakal, Shankarpally, Ranga Reddy District. The site is surrounded by openlands in west direction. An existing 18m proposed to be widen 30 m wide road in westdirection connecting Shankarpally road. The nearest railway station is the Shankarpallyrailway station located at a distance of 6.8 km.
2.2 PROJECT DESCRIPTION2.2.1 DESIGN STAGEThe project is envisaged as an area development project of residential units withamenities based on the low impact development principles. The plot profile wasdecided after deliberations with various agencies and research into the marketdemands, housing and business finance options and the projected growth ofemployment profile, and the worker classification of the area.
The design of the layout is planned based on the low impact development principles;The grid type road network/circulation network, improved Hydrology, open area,sewage treatment plant, refuse segregation and recycling of treated water, energyconservation by adopting solar energy systems etc., and land scaping.
The land area available for the project is 69.99 hectares and will be allocated for varioustypes of Residential plots with amenities based on the development rules. It isproposed to provide 1067 open plots. The land use analysis and the number of plotsproposed are presented in table 2.1.
It is proposed to provide 1067 residential plots of various types along with amenities.The water requirement of the project during occupation will be drawn from HMWSSB.Sewage treatment plant will be provided to treat the wastewater. Water conservationmeasures will be incorporated in the plumbing designs. Water recycling/reuse will beadopted by way of using treated water for toilet flush systems, and green beltdevelopment. The treated effluent and storm water will be let-out into the storm waterdrains till such time the municipal drains and sewer lines are made available in the areaby the planning body GHMC. The required power will be drawn from the TRANSCO andthe energy requirement will be optimized by adopting energy efficient design forlighting; Solar Energy will be used for fencing, and other areas wherever feasibleeconomically. The layout of the project site and Contour plan of project site ispresented in 2.1 and fig 2.2 respectively.
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants2 - 2
Table 2.1 Land Use AnalysisLand Use No. of Plots Total Site Area (m2) %Individual Units 1067 392877.53 56.3Amenities 24713.13 3.5Green area 69971.72 10.0Road area 188403 27.0Open area 16149.08 2.3Services 5582.2 0.8Net plot area 697696.7 100.0Road widening Area 2166.7Total Site Area 1067 699863.4
Fig. 2.1 Site Layout
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RWHSUMP
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GARBAGE AREA456.76 SQ.YDS
GARBAGE AREA335.84 SQ.YDS
GARBAGE AREA939.54 SQ.YDS
GARBAGE AREA444.00 SQ.YDS
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GREEN AREA-2
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TOTLOT-43547.12 sq.yds29.31 Guntas
SOCIAL INFRA-19305.09 sq.yds1 AC 36.90 Guntas
SOCIAL INFRA-211,556.68 sq.yds16.30 Guntas
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13.7
2
20.31 20.31
13.7
220.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
15.6
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20.31 20.31
18.4
5
14.4
1
27.4
313
.72
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.2
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20.31 20.31
13.9
4
12.6
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27.4
3
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
25.5
5
24.68
24.4
127
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18.25
11.55
27.4
3
13.7
213
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13.7
213
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13.7
2
20.31
20.31
20.31
20.31
20.31
20.31
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13.7
2
20.31
13.7
2
20.3120.31
13.7
2
20.3120.31
13.7
2
20.3120.31
13.7
2
20.3120.31
13.7
2
20.3120.31
17.7
1
20.31
13.7
213
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13.7
213
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13.7
2
20.31 20.31
20.31 20.31
20.31 20.31
20.31 20.31
20.31 20.31
20.31 20.31
20.5
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1.83
13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31
27.4
3
20.3120.31
27.4
3
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31
27.4
3
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
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20.3120.31 13.7
227
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20.3120.31
27.4
3
20.3120.31
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
2
20.3120.31 13.7
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20.3120.31 13.7
2
20.3120.31 13.7
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13.7
2
13.7
2
13.7
2
20.3113.7
2
20.3113.7
213
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20.3120.31
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
20.5
0
20.31 20.31
13.7
2
20.3120.31
13.7
2
20.31 20.31
13.7
222
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20.31 20.31
13.7
2
20.31
24.3824.38
18.4
2
24.38
24.38
15.2
415
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26.0
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24.38 24.38
24.38 24.38
25.2
1
24.38 24.38
15.2
4
24.38 24.38
15.2
4
24.38 24.38
15.2
4
24.38 24.38
15.2
4
24.38 24.38
15.2
4
24.38 24.38
18.4
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24.38
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15.2
415
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15.2
415
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18.2
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24.3824.38
24.3824.38
24.3824.38
24.3824.38
24.3824.38
24.3824.38
24.3824.38
24.38
30.48
18.2
918
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18.2
918
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18.2
918
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18.2
918
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33.7
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30.48 30.48
30.4830.48
30.4830.48
30.4830.48
30.4830.48
30.4830.48
30.4830.48
30.4830.48
30.4830.48
18.2
9
30.48 30.48
18.2
9
30.48 30.48
18.2
9
30.48 30.48
18.2
9
30.48 30.48
18.2
9
30.48 30.48
18.2
9
30.48 30.48
18.2
9
30.48 30.48
18.2
9
30.48 30.48
18.2
9
30.48 30.48
18.2
9 26.7
8
19.2
4
30.48
22.7
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30.48
30.48
30.48
22.5
2
30.48
30.48
34.2
918
.29
30.48
18.2
9
30.48
18.2
9
30.48
18.2
9
30.48
18.2
9
30.48
18.2
927
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18.2
9
30.48 30.48
18.2
920
.86
30.48
29.3
9
30.48
18.2
918
.29
18.2
9
30.48 30.48
30.48 30.48
30.48 30.48
21.00 21.0328.9
6
21.03
29.1
2
21.00 21.03
21.03
26.2
1
15.2
415
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15.2
415
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15.2
415
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15.2
415
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15.2
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24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
15.2
415
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15.2
415
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15.2
415
.24
15.2
415
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15.2
415
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24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
15.2
415
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15.2
415
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15.2
415
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15.2
415
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15.2
415
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24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
15.2
415
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15.2
415
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15.2
415
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15.2
415
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15.2
415
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24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
24.38 24.38
20.31 20.31
15.2
413
.72
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
20.31 20.31
15.2
413
.72
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
20.31 20.31
15.2
413
.72
50.42
40.61
31.17
27.4
327
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24.38 24.38
15.2
4
24.38 24.38
15.2
4
24.38 24.38
15.2
4
24.38 24.38
15.2
4
13.1
2
24.38 24.38
15.2
4
24.38 24.38
15.2
4
24.38 24.38
15.2
4
24.38 24.38
15.2
4
24.38 24.38
15.2
4
31.2
3
20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31
27.6
1
13.7
213
.89
22.0
6
19.6
1
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
13.7
2
20.31 20.31
20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
23.7
2
23.8
5
13.7
2
20.31 20.31
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
19.6
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13.7
2
20.31 20.31
20.31 20.31
13.7
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20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
26.6
5
13.7
2
20.31 20.31
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
19.5
9
13.7
2
20.31 20.31
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
26.9
5
13.7
2
20.31 20.31
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
19.8
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13.7
2
20.31 20.31
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
13.7
2
20.31 20.31
26.1
4
50.09
39.65
29.28
27.65
26.49
27.4
324
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25.3
8
40.61
15.5
2
10.7
3
20.1
3
17.3
0
23.1
3
20.31 20.31
27.9
5
24.9
4
30.9
3
20.31
32.4
8
37.7
1
19.6
619
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29.09
33.49
2787.66 Sqyds
23.03 guntas
GREEN AREA-3
TOTLOT-6657.73 sq.yds
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Green-91469.06 sq.yds
UTILITY AREA1649.92 SQ.YDS
11KV/433VTRANSFORMERSYARD
UTILITY AREA
1
2
3
411KV/433VTRANSFORMERSYARD
5
11KV/433VTRANSFORMERSYARD
11KV/433VTRANSFORMERS YARD6 UTILITY AREA691.91 SQ.YDS
STPUTILITY AREA352.70 SQ.YDS
27.4
3
27.4
2
33.5
8
35.9
3
23.6
4
41.1
5
17.06
27.4
3
13.1
3
26.5
0
18.2
918
.29
18.2
9
1062
15.8992
.57
RWRP
WATERSUMPS&OHTCAP.700KL1327.96 sq.yds 20
.58
25.79
666 666 666 666 666 666 444 444
417 417 417 417 417 417 347 347 347 347 347347 347 357
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69
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65
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93
92
91
90
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96
95
94
130
129
128
127
126
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124
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122
121
120
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118
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116
115
114
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144
143
142
141
140
139
138
137
136
135
134
133
132
131
168
167
166
165
164
163
162
161
160
159
158
157
156
155
154
153
152
151
150 187
186
185
184
183
182
181
180
179
178
177
176
175
174
173
172
171
170
169 208
207
206
205
204
203
202
201
200
199
198
197
196
195
194
193
192
191
190
189
188 229
228
227
226
225
224
223
222
221
220
219
218
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Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants2 - 3
2.2.1.1 Storm water drains:Storm water drainage planning, domestic water planning and sewerage transfer andsewage treatment planning are critical aspects of residential projects.
Storm water drains will be provided all over the site to meet the expected increase inthe runoff during rainy seasons due to the impervious nature of the paved areas. Thesite is uneven and it is proposed to maintain the levels as much as possible, hencestorm water outlets from the site are anticipated. The expected runoff is calculated forthe design of the storm water runoff and presented in following table 2.3.
Calculation for Storm Water DrainQuantity of storm water
(a) Without projectArea of Catchment, ‘A’ : 69.9863 HaRun off Coefficient, ‘C’ : 0.6Maximum intensity of rainfall, ‘I’ : 40 mm/hrTherefore Q : 4.666 m3/sec
(b) With project :Area for catchment for roof and road : 60.816 Ha
Area of Catchment, ‘A’ : 60.816 HaRun off Coefficient, ‘C’ : 0.9Maximum intensity of rainfall, ‘I’ : 40 mm/hrTherefore Q = : 6.082 m3/sec
Area for catchment for open areas : 9.170 HaRun off Coefficient, ‘C’ : 0.6Maximum intensity of rainfall, ‘I’ : 40 mm/hrTherefore Q = : 0.611 m3/secTotal Discharge : 6.693 m3/secBut, Discharge, Q = A/V
Where,A= Area of the Drain,
V= Max. Permissible Velocity : 6m/sec for concretedrain
Area of drain, ‘A’ = Q/V : 1.115 m2
Taking depth of drain as 0.6 m at the starting point : 0.6Width of drain = Area/depth = : 1.859 m 1859 mm
Width of the drain is to taken 1859 mm and depth varies according to the slope of ground.
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants2 - 4
Table 2.2 Strom Water Runoff
Land UseArea inHectar
es
Vol./hrafter
development C=0.8
Vol./hrbefore
Development C=0.6
Difference inDischarges Remarks
Roof Area 41.76 13362.90 10022.18 3340.73 1067 nos. of RWH pitsare provided of size1.5m X 1.5m X 2.0 m
Road Area 19.06 6098.23 4573.67 1524.56Open Area 9.17 1100.44* 2200.87 -1100.44
TOTAL 69.99 3764.85*C=0.3 after development
Fig 2.2 Rain water Harvesting Structure of Size 1.5 m X 1.5 m X 2m
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants2 - 5
2.2.1.2 Water Availability:Water is required for the construction as well as during occupation stage as the same isan important resource. The water requirement during occupation stage in the order of1476.5 KLD. The water resource available with the Municipal authorities was studiedto identify the source and feasibility. The water resource both domestic water andsewage is dealt by the Hyderabad Metropolitan water supply and Sewerage Board(HMWSSB) in the GHMC area. The HMWSSB has been maintaining the water supplyresources for Hyderabad along with the treatment of wastewater. The resourcesavailable with the HMWSSB are presented in table 2.3.
Table 2.3 Details of present sources of water supply to Hyderabad
Source Name River Year ImpoundmentName
Distance fromcity km
InstalledCapacity MGD
Osmansagar Musi 1920 Osmansagar 15 27Himayatsagar ESI 1927 Himayatsagar 9.6 18Manjira Phase I Manjira 1965 Manjira barrage 58 15Manjira Phase II Manjira 1981 Manjira barrage 59 30Manjira Phase III Manjira 1991 Singur Dam 80 37Manjira Phase IV Manjira 1993 Singur Dam 80 38Krishna Phase I Krishna 2005 Nagarjuna Sagar 116 90Krishna Phase II Krishna 2008 Nagarjuna Sagar 116 90Krishna Phase III Krishna 2015 Nagarjuna Sagar 116 90Godavari Phase I Godavari 2016 Yellampally 186 172
Source: Hyderabad Metropolitan Water Supply & Sewerage Board, www.hyderabadwater.gov.in
It may be noted that the following water supply projects i.e., Krishna Phase III (Part II)with 45 MGD capacity and Godavari phase – I with 172 MGD capacity is anticipated tobe operational during 2015 and 2016 respectively. It may also be noted that thedependability of Osman sagar and Himiyath sagar is reduced to approximately 60%. 45MGD supply is available.
Domestic Water: It is proposed to draw domestic water from Hyderabad MetropolitanWater Supply and Sewerage Board (HMWSSB). The water during summer season willbe drawn from ground water sources. The water requirement of the project is in theorder of 1476.5 KLD. The water requirement for the project during the occupation stageis presented in table 2.3. The water savings for the project is presented in table 2.4.
Table 2.3 Water Requirement of the Project
Land Use No. ofPlots
No. ofPersons/
Plots
Waterrequirement per
person in l *
Total WaterRequirement
in KLDNo. of Plots 1067 10 135 1440.5Primary school 1 300 45 13.5Nursery school 1 200 45 9.0Commercial 60 5 45 13.5TOTAL 1476.5*Water requirement as per NBC
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants2 - 6
The water required for this project is 1476.5 KLD. Water requirement shall be reducedby adopting dual plumbing system. Dual plumbing system: Separate tank is provided tostore the treated wastewater; the tank shall be 1 foot below the overhead tank.Separate pipe system is provided to pump the treated water for flushing. All thetreated water pipelines shall be colored blue. The total saving is as follows;
Table 2.4 Water Savings of the Project
Land UseNo.of
Plots
No. ofPersons/
plots
WaterRequirement/
KLD
Treatedwater
reuse/dayKlpcd
EffectiveWater
Requirementin KLD
No. of Plots 1067 10 1440.5 426.8 1013.7Primary school 1 300 13.5 6.0 7.5Nursery school 1 200 9.0 4.0 5.0Commercial 60 5 13.5 6.0 7.5TOTAL 1476.5 442.8 1033.7
Approximately 442.8 Kl/day water will be saved by adopting recycling of treated waterin the toilet flush. The effective water consumption is reduced by 442.8 Kl/day and therequirement will be in the order of 1033.7 Kl/day due to treated water recycling. Thewater balance of the project during occupation stage is tabulated in table 2.5.
Table 2.5 Water Balance during occupation stageInput KLD Output KL/DayDomestic water fromHMWS & SB 1033.7 Treated waste water to
municipal sewer lines 632.3
Recycled water 442.8 Treated waste water for Recycle 442.8Water requirement for greenbelt during non monsoon 106.1
Losses approx 20% 295.3Total 1476.5 Total 1476.5
The water used in the order of 1476.5 KL/day would generate 1181.16 KL/day ofwastewater, which has to be treated for reuse and or disposal.
SEWAGE TREATMENT PLANTSewage treatment plant based on Moving bed bio reactor system (MBBR) technologyThe moving bed biofilm process combines the technologies of activated sludgeprocesses and biofilm processes. The moving bed biofilm process is frequently usedwhen space is an issue. High-rate biofilm systems such as the Kaldnes Moving BedReactor (KMB) or the NATRIX technology are highly efficient in removing the solubleorganic and nitrogen load.
Moving bed bio reactor system (MBBR)The KMB and the Natrix process are suspended carrier biofilm processes. They arebased on the use of plastic carrier media, which are kept in suspension and continuousmovement in the treatment reactor. Excess biomass sloughs off from the media and iswashed out of the process with the treated effluent.
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants2 - 7
Several process combinations have been realised in upgrading activated sludgetreatment plants. However, it is also possible to realise hybrid solutions using thebiofilm carriers in the existing tanks without any retrofitting.
When a pure KMB process is employed, a typical overall treatment design consists ofpre-treatment (screening) followed by one or more MBBR tanks, where the degradationprocesses of soluble matter take place. The final stage of the treatment is normally theparticle separation.
The Treatment plant will consist of the following units:
1. Bar screen channel with Bar screen2. Oil and grease trap integrated in the bar screen channel3. Equalizations tank with aeration/ mixing4. Aeration tank with fine pore diffuser membranes5. Secondary clarifier with mechanical rake6. Clarified water tank with aeration/ mixing7. Pressure sand filter8. Activated carbon filter9. UV10. Final treated water holding tank
Table 2.9 Characteristics of Waste waterParameter Quantity in mg/l
PH 6 – 7Total Suspended Solids 400 – 600BOD 200 – 300COD 450 – 500
1. BAR SCREEN CHANNELThe bar screen channel is integrated along the collection/ Eq. tank wall on the inside,receiving incoming sewage by pipeline at an invert level of 2.0, 2 meters below Rooflevel of STP room.. The screen channel shall run along the length of the wall, be approx.1.0 m L x 1.0 m W x 1.0m deep. The screen channel shall be fitted with a coarse barscreen followed by a fine bar screen with 20 & 10 mm openings respectively, bothfabricated out of MS flats 20 x 5 mm, and shall be placed at an inclination of 60 deg tothe floor to permit easy screen cleaning. There shall be a screen operating platformand screening hand rake shall be provided. The Bar screen chamber shall be providedwith a baffle near the outlet end to trap free floating O&G, which shall be amenable toeasy removal of floating scum by means of a scooper. The screen and the chamber areeasily accessed from the operating platform provided over the Equalization tank.
2. EQUALISATION TANKThe incoming sewage after screening shall be collected in a collection tank. This tankhas sufficient buffer capacity to permit uniform pumping to the main downstreamtreatment units.
Dimensions : 19.6x13.8 x 2.0 m Max. Side Water Depth (SWD)Max. Capacity : 375 cum (Max.): 6 hours Max. D.
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants2 - 8
Mixing/ Aeration : Provided by means 40 Sets (80 No’s) 90 OD x 800 LPVC moulded coarse bubble diffusers with Max. airSupply of 500 cum/hr.
3. RAW SEWAGE LIFT PUMPSThe raw sewage from the collection tank shall be evacuated at a uniform flow rate of 75cum/hr by means of 4 Nos. (2W + 2 SBY) horizontal centrifugal, non-clog, solidshandling pumps provided with a recycle arrangement back to the tank to enable flowcontrol. The pumps shall be mounted on an extension to the main operating platform.
Pumps : Kirloskar SP 1H with 2HP motor
4. MBBR TANK /Aeration Tank.The biological aeration system is designed as an extended aeration system with sludgerecycle. Aeration is by means of fine pore membrane diffusers.
Design flow : 1500 cum/dBOD in : 250 mg/L ; 375 Kg/dMBBR Volume : 462 cum (77cum x 6no’s)No. of Tanks : SixDimensions : 19.8x8x3.0m SWD Each x 6no’sFPDM : 9 sets (18 No’s) 90 OD x 1000 L Retrievable type
In two rows across the tank in each MBBR tank pairAir : 180 cum/hr. to each MBBR tank pair
5. SECONDARY CLARIFIER TANK 1,2 & 3There shall be a mechanized clarifier in a square tank to suit layout.
Dimensions : 21 m x 7.3 m x 3.0 m SWD x 2 no’s& 21.4x3.2x3.5 SWD x 1 no
O/R Rate : Approx. 0.6 – 0.67 cum/sqm/ hr
AIR BLOWERSAir blowers in the STP shall be designed for providing air to the following duties in theSTP:
1. Eq/ Collection tank : 500 cum/hr2. Aeration tank : 540 cum/hr3. Sludge tank : 125 cum/hr4. Cl. Water Tank : 250 cum/hr5. Filter press : 15 cum/hr
TOTAL Air : 1430 cum/hrProvide = 620x3= 1860 cum/hr
6 Nos. air blowers (3 W + 3 SBY), each of capacity 620 cum/hr at 0.4 Kg delivery air pr.With suitable motor shall be installed to cater to the above air requirement.
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants2 - 9
6. SLUDGE HANDLING AND DEWATERINGExcess activated sludge from the Biological system is periodically diverted to a sludgeholding tank. Dimensions of the tank are approx. 10.5 m x 4.9 m x 4.0 m Max. Waterdepth (232 cum cap.) The tank shall be provided with 25 Nos. 90 OD x 800 L Coarsebubble diffuser, and max. air supply of 125 cum/hr
7. SLUDGE DEWATERING IN FILTER PRESSThe thickened sludge from the sludge holding tank is dewatered in a polypropyleneplate and frame filter press. Feed to the filter press is by means of a high pressurehelical positive displacement pump.
Filter press feed pump : 2.0 cum/hr at 4 Kg pr. With 1.5 HP motorFilter press : 600 x 600 x 15 chambers complete with manuallyoperated Hydraulic closing device provided with air for quicker drying of cake
8. INTERMEDIATE CLARIFIED WATER TANKClarified overflow from the settling tank is collected in the intermediate sump forholding treated water prior to filtration. This sump is of capacity 232 cum and isprovided with 5 sets (10 Nos.) Coarse bubble diffusers and 40 cum/hr of air.
Dimensions : 10.5m x 4.9 m x 4.0 m Max. SWDCapacity : 232 cumMixing : 50 Nos. 90 OD x 800 L CBD with 250 cum/hr air
9. FILTER FEED PUMPSFilter feed pumps, 4 Nos. ( 3 W + 1 SBY) feed water from the sump first to the PressureSand filter, followed by an Activated Carbon Filter. The pumps has a duty of 29cum/hr& shall be provided with bypass flow control system
Pumps : Kirloskar SP4LA+ / Equivalent with 105 HP motor
10. PRESSURE SAND FILTERThe pressure sand filter shall be of MS pressure vessel type, rated for 5 Kg workingpressure with MS shell of 5 mm and Dished ends of 6 mm, complete with frontal pipingwith individual B/F control valves, fill media of graded gravel, Silex, Filter sand
Vesssel : 1.35 m dia x 1.80 m Shell height x 3 no’s
11. ACTIVATED CARBON FILTERThe Activated Carbon filter shall be of MS pressure vessel type, rated for 5 Kg workingpressure with MS shell of 5 mm and dished ends of 6 mm, complete with frontal pipingwith individual B/F control valves, fill media of graded gravel, Silex and Activated carbonof IV 800 grade.
Vesssel : 1.98 m dia x 1.80 m shell ht x 3 no’s
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants2 - 10
12. UF TREATED WATER TANK
UF Treated water from the UF module will be collected in a UF treated water holdingtank of capacity 232 cum to hold 4 hours average daily flow
Dimensions : 6.3 m x 12 m x 3 m Max. SWDCapacity : 232 cum
13. FILTERED WATER TANKFiltered water from the ACF will be collected in a final treated water holding tank ofcapacity 232 cum to hold 4 hours average daily flow
Dimensions : 10.6 m x5. 3 m x 4.0 m Max. SWD for LandscapeCapacity : 232 cum
Overflow provision shall be made in this tank at an appropriate height so that excesswater is piped to the storm drain outside the STP room
14. UF TREATED WATER TANK
UF Treated water from the UF module will be collected in a UF treated water holdingtank of capacity 232 cum to hold 4 hours average daily flow
Dimensions : 6.3 m x 12 m x 3 m Max. SWDCapacity : 232 cum
Characteristics of Treated Waste waterParameter Quantity in mg/l
pH 7.3Total Suspended Solids 50BOD 20COD 50
Disposal of Treated Waste Water: It is proposed to reuse the treated wastewater forgreen belt development and for toilet flushing. Excess treated water shall be let outinto the municipal sewer line. It is proposed to release/dispose the storm water in thestorm water drains.
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants2 - 11
Fig. 2.5 Sewage Treatment Plant
SEW
AGE
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ANT
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Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants2 - 12
2.2.1.3 Solid WasteMunicipal Solid Waste CompositionIn India the biodegradable portion dominates the bulk of Municipal Solid Waste.Generally the biodegradable portion is mainly due to food and yard waste.
Table 2.7 Composition of Municipal Solid WasteType Composition (%) Solid waste in kg
Paper 8 446.0Plastics 9 501.8Metals 1 55.8Glass 1 55.8others 4 223.0Biodegradable 48 2676.0Inerts 25 1393.8Rags 4 223.0Total 100 5575
(Source: NSWAI- National Solid Waste Association of India estimate)
Design StageThe anticipated solid waste/garbage is in the range of 500 g/head and the total garbagewill be in the order of 5575 kg/day. The responsibility of garbage collection anddisposal lies with the Shankarpally Municipality authorities. The table 2.8 presents theanticipated garbage quantity after occupation.
Table 2.8 Solid Waste Generation
Land Use No. ofPlots
No. ofPersons/
Plot
Total No. ofPersons
Total Solid waste inKgs @ 0.5 kg/head
No. of Plots 1067 10 10670 5335Primary school 1 300 300 90Nursery school 1 200 200 60Commercial 60 5 300 90Total 5575
The clearing and grubbing activity involves clearing of shrubs mainly as the land area isdevoid of any trees due to biogenic pressures. The cut and fill operation for the entirearea is presented in table 2.9. There is excess cut material which would be used for thepurpose of aggregate for the construction of roads.
Table2.9 Earth Work QuantitiesArea Qty. of fill (m3) Qty. of cut (m3) Surplus fill (m3) Surplus cut (m3)
Site area 139973 139973 ---- ----
The cut material contains mainly granite stones, which is suitable for aggregatepurpose. The excess cut material will be used for filling the low lying areas and or siteleveling for individual plots.
Gadwal Estates Environmental Impact Assessment
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2.2.3 OCCUPATION PHASEA number of facilities will be provided by M/s SSC- DSR Projects to the occupants andthe facilities are shown in table 2.10.
Table 2.10 Amenities ProposedAmenity Nos. or descriptionGreen/open Area 69971.72 m2
Sewage Treatment Plant 1School 4Convention Store/ Local Shopping 1DG Sets 250 X 10 nos.
The amenities like roads, street lighting and open spaces, will be handed over to thelocal administration viz. DTCP. The owners/purchasers will form cooperatives to run theremaining amenities like sewage treatment plant. The major requirement of resource isfor electricity and water. The electricity will be drawn from TRANSCO. A number oftransformers will be provided to reduce voltage fluctuation and to provide qualityenergy. The power requirement during operation phase is presented in table 2.11.
Table 2.11 Energy Consumption Statement
S.No Description No. ofUnits Load in KW
TotalConnected
Load(KW)
TotalConnected
Load(kVA)
Total MaxDemand
(KVA)
1 Individual Units 1067 8 8536 10670 106702 Street Lights 650 0.04 26 33 263 Primary school 150 150 1504 Nursery school 120 120 1205 Commercial 400 400 4006 Amenities 1290 1612 12907 STP 1 300 300 375 375
TOTAL 10822 13359 13031Maximum demand in kw at 0.6 diversity factor 6493Consumption of power for 8 hours per day 51944Maximum demand in kw at 0.2 diversity factor 2164Consumption of power for 16 hours per day 34629Total consumption of power per day 86573 KWTotal consumption of power per year 316.0 Lakh Units
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants2 - 14
Table 2.12 Energy Saving by using Solar Water Heater
S.No Description No. ofUnits
Powerallocated inwatts / unit
Total powerrequired in
(KW)1 Individual Units 1067 3000 3201
TOTAL 3201Maximum demand in kw at 1 diversity factor 3201Consumption of power for 2 hours per day 6402Maximum demand in kw at 0.4 diversity factor 1280Consumption of power for 2 hours per day 2561Total consumption of power per day 8962.8 KWTotal consumption of power per year 32.71 Lakh Units
Table 2.13 Energy saving by using Solar Street Lights
S.No Description No. ofUnits
Powerallocated inwatts / unit
Total powerrequired in
(KW)1 Street lights 160 40 6
TOTAL 6Maximum demand in kw at 0.6 diversity factor 3.8Consumption of power for 8 hours per day 31Maximum demand in kw at full load 6Consumption of power for 4 hours per day 26Total consumption of power per day 56.3 KWTotal consumption of power per year 0.21 Lakh Unitssaving with Solar Heater and Street Lighting 32.92 Lakh Units
Table 2.14 Electrical Power savings using CFL for lighting
S.No Description Area inm2
Powerallocated inwatts / unit
Total powerrequired in
(KW)1 Residential 392878 6 23572 Common & Utilities 304819 1.5 457
TOTAL 2814Maximum demand in kw at 0.9 diversity factor 2533Consumption of power for 12 hours per day 30397Total consumption of power per day 30396.5 KWTotal consumption of power per year 110.95 Lakh UnitsSavings in power using CFL 33.28 Lakh Units
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants2 - 15
Table 2.15 Savings in Electrical Power Consumption – SUMMARY
S.No Description WithCFL
With SolarHeater and
Street Lighting
TotalConsumption
lakh unitsTotal Saving
1 Savings in lakhkwh units
33.28 32.92316.0
66.20
2 Savings inpercentage (%)
10.53 10.42 21.0
2.2.3.1 Solid WasteThe solid wastes anticipated during occupation stage include garbage, sludge from STP,hazardous waste of used oils, and batteries from generators. The quantity of wastes ispresented in table 2.16.
Table 2.16 Solid Waste Generated during Occupation Phase
S.No Type ofWaste Quantity Collection/storage Disposal
1 Garbage 5575kg/day
Segregation at source into bio-degradable, non bio- degradableand Domestic Hazardous wastes.Disposal of recyclable waste toAuthorized Waste Pickers /Authorized Recyclers. Balancesegregated waste given toAuthorized Agency of Local Body.
Municipal solidwaste disposal
2SewageTreatmentPlant Sludge
150kg/day
Stored in HDPE bags. Used as manureand or given tofarmers.
3 UsedBatteries
20nos.year
Sent toAuthorizedrecyclers orreturned toseller
4 UsedLubricant 250 l/year
Stored in HDPE Carbouy Sold toauthorizedrecyclers
5 TransformerOil 300 l/year
Stored in HDPE Drum Sold toTRANSCOauthorizedcontractors
Gadwal Estates Environmental Impact Assessment
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8. ENVIRONMENT MANAGEMENT PLAN
The project is envisaged to develop 69.99 Hectares in Survey No. 387, 388 & 394 to404, Kondakal, Shankarpally, Ranga Reddy District, Telangana. The village has a numberof layouts and rapidly turning into a residential zone for various types of socio economicsectors.
8.1 PROJECT DETAILSThe project will be spread over an area of 69.99 Hectares in Survey No. 387, 388 & 394to 404, Kondakal, Shankarpally, Ranga Reddy District. The site is surrounded by openlands in west direction. An existing 18m proposed to be widen 30 m wide road in westdirection connecting Shankarpally road. The nearest railway station is the Shankarpallyrailway station located at a distance of 6.8 km.
It is proposed to provide 1067 residential plots of various types along with amenities.The water requirement of the project during occupation will be drawn from HMWSSB.Sewage treatment plant will be provided to treat the wastewater. Water conservationmeasures will be incorporated in the plumbing designs. Water recycling/reuse will beadopted by way of using treated water for toilet flush systems, and green beltdevelopment. The treated effluent and storm water will be let-out into the stormwater drains till such time the municipal drains and sewer lines are made available inthe area by the planning body GHMC. The required power will be drawn from theTRANSCO and the energy requirement will be optimized by adopting energy efficientdesign for lighting; Solar Energy will be used for fencing, and other areas whereverfeasible economically.
8.2 MAJOR FINDINGS OF THE EIAAn EIA was conducted and the major findings of the EIA study are presented below;
8.3 ENVIRONMENTAL IMPACTSImpact on Physical ResourcesConstruction of proposed project requires huge quantities of natural resources likesand, sub grade and aggregate, and materials produced from natural resources likebricks, cement and steel. The material shall be drawn from local sources, and the leaddistances range from 1 – 300 km. The impacts on physical resources of sand will beirreversible. While bricks will be brought from kilns which use Coal ash. The materialrequirement of steel, cement etc. will be purchased from manufacturers with in state.Hence, no major impacts on physical resources as regards the availability andprocurement of construction material are anticipated due to the project.
Impacts on Air QualityImpacts on air quality during construction stage are likely to be due to operation ofconstruction yards, material transport on trucks and fugitive emissions from theconstruction sites. The model results for occupation stage show slight increase in the air
Gadwal Estates Environmental Impact Assessment
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quality and in worst concentrations are falling within the site, and the results are with inthe prescribed limits.
Impacts on Noise QualityImpacts on noise quality during construction stage will be significant. Hence theconstruction near the habitation is proposed only during daytime. Construction workerswill be provided with protection equipment to guard against the noise impacts. Noisemitigating measures will be suggested for construction equipment and DG sets.
Impact on FloraThe project site and its surroundings do not form a habitat to any endangered flora.There are no trees within the project site due to anthropogenic pressures. The projectwill enhance the aesthetics of the site due to the provision of avenue plantation andcentral greening. This would ensure minimum impact on flora.
Impact on FaunaAs there are no endangered species of wild life in and around the project site, it is likelyto have minimal impact. The avifauna will find abode on the trees proposed to beplanted. This would enhance the aesthetics of the area. Pet animal faeces should notenter the storm water drains.
Impact on Land useThere is no land acquisition for this project. The land use of the site fallow land andclassified as residential by HMDA. Mitigation measures shall be adopted to avoid thesame. The area development would increase the housing activity in the surroundings,which is a positive impact, as barren lands will be used for productive usage, and thenegative impacts will be pressure on the infrastructure facilities.
Impact on Surface Water ResourcesThe degradation of water quality can occur during construction phase from increasedsediment load into watercourses near the construction site. Suitable mitigationmeasures proposed, as part of the EMP will ensure that the residual impacts areminimal. Storm water runoff would increase due to the increase in impervious surface,and storm water sumps will be provided as mitigation measure. The design of the stormwater drain will consider the additional runoff. The urban storm water joining thestorm water drains may carry pollutants from impervious surfaces
Impact on Ground Water ResourcesGround water shall be drawn during construction & occupation phase. Exploitation ofground water will have an impact and the same shall be restricted to ensure resourceconservation. This impact will be marginal, as the ground water will not be drawncontinuously.
Impact on Human Use ValuesThe dominant land use in the area is open plots, and expected commercial space willincrease the pressure on the residential localities. There is no additional requirementand or acquisition of land. The provision of public lung space in the project and othercommunity facilities will reduce the additional transport required availing the facilities.
Gadwal Estates Environmental Impact Assessment
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The project authorities will provide road safety measures to reduce risk of accidents inthe internal roads. The impact on Human use values is marginal.
8.4 ENVIRONMENTAL MANAGEMENT MEASURES PROPOSEDA description of the various management measures during the various stages of theproject is provided in the following sections.
8.4.1 Pre-construction stageDuring the design and preconstruction stage the management proposes to comply withthe regulations of town planning, explore the availability of sufficient resources, provideplantation and sink bore wells after obtaining the necessary permission.
8.4.2 Construction stageThis will be the most crucial and active stage for the Environment Management Plan. Inaddition to the monitoring of the construction activity itself to the pollution levelswithin permissible limits, mitigation and enhancement measures for water resourceswill go on simultaneously as the construction progresses. To facilitate implementationof the enhancement and mitigation measures suggested working drawings of the samewould be prepared after completion of detailed project report. In addition, the needfor a balanced evaluation and planning for risks associated with construction activitiesrelated to housing and commercial project will be part of the Supervising Contractorsresponsibility.
The resource conservation by way of identification of materials and construction debrisrecycle/disposal will be formulated by the supervising consultants. The responsibility ofenvironment management plan lies with the project authorities that would implementthe plan in consultation with other consultants, by including appropriate provisions inthe contract/sub contract documents and providing the necessary facilities.
8.4.3 Occupation stageThe environment management plan will be implemented by ownersassociations/societies, where project authorities are co-opted as members, and whilethe management plan related to the utilities like roads, street lighting and commonopen spaces lies with the HMDA/GHMC. The management in operation stage willessentially entail maintenance of sewage treatment plant, maintenance of utilities, andmonitoring activity in the project site. Monitoring for pollutants specified in theMonitoring Plan will serve the two purposes. In addition to checking the efficacy of theprotection/mitigation/enhancement measures implemented, this will help verify orrefute the predictions made as a part of the impact assessment. Thus, it will complete avery important feedback loop for the project.
The measures adopted and/or to be adopted during different stages of the project havebeen detailed in table 8.1.
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Table 8.1 Environmental Management Plan and Action Plan
EnvironmentalIssues/Impacts
Enhancement/ MitigationMeasures Management Action
CONSTRUCTION PHASE
Dust generation due toconstruction activities;
Roads in the construction areawill be sprinkled with water toreduce the raising of dust.
Plantation taken up at initialstage.
Plantation to be ensuredHorticulturists to identifythe species.
Supervising consultants/contractor to ensure thewater sprinkling
Exhaust gases from heavymachinery and
transportation of materials
Vehicle and equipmentmaintenance.
PUC for all transport vehicles.Avoidance of idling ofequipment.
Contractors to be educatedand supervising consultantto ensure the same.
Sedimentation of stormwater during rainy season
Avoiding stockpiles of materialsnear natural drains.
Provision of filter fenceProvision of storm water drainswherever possible before thebeginning of construction.
Architects, in consultationwith Supervisionconsultants should identifythe measures needed.
Sewage transfer
Lead bearing piping to beavoided
Project authorities andplumbing consultant incoordination with theSupervision consultantshould implement thesame.
Sewage Treatment
Sewage to be treated in the STPand reused/disposed.
STP shall be provided by theproject authorities andensured the design of STP isoptimised to meet theprescribed standards withenergy efficiency.
Alteration of Drainage
Storm water drains to follow thenatural course as far as possible.
Storm water drains to have a min.water velocity of 1m/s and a max.3 m/s.
Min. width of 0.6 meters anddepth based on the gradient.
Provision of rainwater harvestingstructures.
Architects in consultationwith sanitary engineeringconsultants.
Supervision consultant toensure the same.
Water ConsumptionWater conservation measuresduring construction.
Sub contractors to beeducated on waterconservation measures.
Gadwal Estates Environmental Impact Assessment
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EnvironmentalIssues/Impacts
Enhancement/ MitigationMeasures Management Action
Loss of productive soil
The site area is rocky. Topsoil tobe stock piled separately with1:2 slope and reused forgreening purpose.
Supervision consultant toensure the same inconsultation withhorticulturist and architect.
Soil Erosion
Cut and fill operation to be doneduring non-monsoon season.
Silt fence to ensure silt does notenter storm water drains.
Side slopes will be kept flatterwherever possible, and in caseof steeper slopes it is mulched.
Supervision consultant toensure the same inconsultation with projectauthorities.
Compaction of Soil
Movement of constructionvehicles preferably in theproposed road areas.
Heavy vehicle movementrestricted in central green area.
Ploughing the area afterconstruction.
Architects to identify theroad areas.
Contamination of Soil
Vehicle washing and machinerywashing to be avoided in site.
Parking of vehicles andmaintenance of vehicles to beavoided in site.
Disposal of solid wastes byconstruction workers to bemade in garbage bins only.
Septic tank provision for toilets.Accidental Leakage and spillageof fuels and other constructionmaterials to be controlled byproviding road signs andcovered trucks.
Subcontractors and Projectauthorities should ensure.
Designate the parking areasProvision of Garbage bin byproject authorities andarrangements to be fordisposal of the same.
Natural Resourceconsumption
Identify sand availability fromgovernment-authorisedlocations.
Identify and use bricks from coalash users.
Aggregate to be made from theexcess materials of cutoperations.
Identify and use recycled steelwherever possible.
Proper availability of drinkingwater and sanitation facilities to
The design team inconsultation with projectauthorities and supervisionconsultants must identifythe suppliers.
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants8 - 6
EnvironmentalIssues/Impacts
Enhancement/ MitigationMeasures Management Action
the workers.
Health facilities forconstruction workers
Availability of first aid and healthfacilities
Ensure first aid boxes inadequate numbers and makeshift dispensary. The abovecondition may be put incontract document.
Fire PreventionAdopt safe work practice andhave adequate fire fighting fa-cilities
Provision of adequate firefighting equipment
Noise Pollution from heavymachinery, andtransportation.
Noise and dust causingequipment to be located awayfrom residential areas.
Noise causing activities to beconducted during daytime.
Maintenance of equipment andvehicles to mitigate noisegeneration.
Inclusion of appropriateclauses in constructioncontracts; monitoring ofcompliance during construc-tion and proper ad-ministration of contracts.
Pressures on Infrastructure
Identification of alternativeroutes for transport of materialsfrom outside the site.
Installing Electrical Transformerif necessary based on TRANSCOadvice to avoid powerfluctuations in the site and alsothe neighbouring areas.
Using alternative road toreduce traffic pressure onroads.
Transporting the materialsduring night time.
Consultation with TRANSCOby project authorities.
Construction debris
Construction debris to be used foraggregate and or sub gradepurpose in the case of RCC.
Recyclable metals to be collectedand sold to recyclers.
Avoidance of excess inventory ofmaterials.
Packing materials to be sent forreuse/recycling.
Hazardous waste containers to bereturned to seller/authorisedrecyclers.
Provision of waste disposalsite for waste fromconstruction and storage yard.
Supervision consultant inconsultation with the subcontractors.
Inclusion of appropriateclauses in constructioncontracts; monitoring ofcompliance during construc-tion and proper administrationof contracts.
Plantation andEnvironmental greening.
Soil reclamationUse of top soilInitiation of plantation
Horticulture consultant shallprepare the plan for soilreclamation and use of topsoils in consultation witharchitects and supervision
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EnvironmentalIssues/Impacts
Enhancement/ MitigationMeasures Management Action
consultants.
Social Impacts Additional employment tolocals.
Qualified locals to bechosen for employment.
Occupational Safety andHealth
Construction workers are to beprovided with personalprotective equipment (PPE) suchas earplugs, helmets, safetyshoes, gloves, etc.
Follow the relevant statutoryguidelines
Comply with Buildingconstruction acts.
The premises shall be fencedand no trespassing be allowed.
Ensure adequacy andavailability of Personalprotective equipments.
Project authorities toensure compliance withstatutory requirements.
Project authorities to fencethe boundaries to avoidunauthorised trespassing.
OCCUPATION STAGE
Urban Heat Island EffectVegetation Vegetation to be provided
by horticulturist for theavenues, and central green
Dust Generation fromtraffic.
Plantation. Maintenance of roads by way ofsweeping.
Horticulturist shouldensure avenue plantation
The managing committeesshould ensure maintenanceof avenue plantation.
Municipal authoritiesshould ensure the roadmaintenance.
Generation of Exhaustgases from transport and
utilities.
Avenue plantation. Rule to allow only vehicles withPUC.
Proper maintenance of vehicles.Stack heights of the DG setsmust be provided as per CPCBguidelines and the emissionlevels should meet the CPCBstandards.
To be maintained by theM/s SSC- DSR Project
Project authorities mustensure that the DG sets areprovided with acousticenclosures and proper stackheights.
Sewage Management
All Sewage will be collected byunderground drainage system.
The sewage will be treated insewage treatment plant
The treated sewage is reused foron land irrigation for thedevelopment of green belt.
Treated water line will be provided
M/s SSC- DSR ProjectManagement will maintain theSTP, and sewerage.
Project authorities will beappraised during rainy seasonwhen excess quantities arereleased into the drain.
Treated water lines will be
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EnvironmentalIssues/Impacts
Enhancement/ MitigationMeasures Management Action
for reuse for flushing.Excess treated sewage will be letout into drain.
colored blue and a distance of2 feet will be maintained fromthe other lines by the projectauthorities.
Records of influent andtreated effluent quality andquantity should be maintainedby the society, and thetreatment must be ensured tomeet the standards prescribedby GSR 422 E.
The maintenance of thesewage treatment plant shallbe handed over to theresident association after 3years of maintenance by thedevelopers M/s SSC- DSRProject
Storm water Management
Storm water will be disposedinto storm water drain
Storm water drains will bemaintained periodically beforemonsoon.
Roads, pavements and othersurfaces are swept regularly.
Rainwater harvesting structureswill be connected to all theareas and maintainedperiodically to removesediment.
Storm water drain system anddisposal point to be providedby the project authorities.
Rain water harvestingstructures to be provided byproject authorities.
Maintenance of storm waterdrains by HMWSSB and thesociety shall oversee the same.
Management to interact withthe HMWSSB.
Ground water usage
Ground water sources to beused during non-availability ofsufficient supplies from Groundwater.
Ground water to be usedsparingly and waterconservation measures tobe adopted.
Water ConservationMeasures
Water conservation measures tobe adopted to reduce resourceconsumption.
Management to educate theemployees and provide abook let of measures toreduce water consumption.
Loss of productive soil Individuals to be educatedabout importance greening toavoid loss of productive soil.
Management to educatethe people.
Solid WastesSolid waste/garbage to becollected in green and bluedustbins.
The project authorities tomake arrangements withthe GHMC.
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EnvironmentalIssues/Impacts
Enhancement/ MitigationMeasures Management Action
The biodegradable wastes to beremoved everyday while therecyclable wastes to be removedonce a week.
Solid waste/garbage to bepicked by management staff orits representative NGO.
Transporting the garbage tomunicipal garbage bin/segregation point.
The sludge from the STP may beused as manure for greeningprogram is disposed to farmers.
The used oils and used batteries,and used transformer oils shouldbe sent to authorised recyclers.
The management shallensure the transfer ofwastes to the municipalbin/segregation point.
The project authorities mustidentify the users for STPsludge and authorisedrecyclers for hazardouswastes.
Consumption of naturalresource
The major natural resourceconsumed during occupationstage is water and power.
Consumption of naturalresources shall be optimisedby education andconservation measures.
Noise Levels
Noise levels due to traffic willincrease in the area and themitigation measures ofconstruction and Greening.
Noise levels from DG sets to bemitigated by the provision ofacoustic enclosures.
The project authorities shallensure that the material ofconstruction shall use bestsound transmission classmaterials to ensure that thesound levels with in theresidence are within theprescribed limits forresidential areas.
Plantation should becompleted before theoccupation stage to ensurethat the noise levels aremitigated.
The project authorities mustensure the provision ofacoustic enclosures to the DGsets.
Gadwal Estates Environmental Impact Assessment
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EnvironmentalIssues/Impacts
Enhancement/ MitigationMeasures Management Action
Traffic Volumes andparking facilities
Traffic volumes will increase over aperiod of time and put pressure onthe infrastructure.
Subsequent increase in airpollution loads on the project siteand its surroundings.
Provision of parking facilitiesTraffic and road safety signals tobe provided.
The project authorities mustensure public transport busstations in the immediatevicinity of the site.
The project authorities mustprovide the traffic and roadsafety signals in the project.Two-way mirrors must beprovided at blind corners.
Flora
The impacts on flora are due toair pollution from exhaust ofvehicles to be mitigated by thechoice of species.
The flora of the site shallincrease with the greeningprogram.
M/s SSC- DSR ProjectManagement to ensuregreening the open space.
Horticulturists to assist theemployees in identifying theplant species with anobjective of reducing theenergy costs and mitigatingthe heat island effect.
Energy Conservation
The energy conservationbuilding practices with respectto building envelop fenestrationand roof materials to beadopted.
The Architect shall ensurethe codes are implementedin the design drawings andworking drawings.
8.5 IMPLEMENTATION ARRANGEMENTSThe responsibility of implementing the mitigation measures lies with M/s SSC- DSRProject during design stage while the responsibility lies with the cooperative owner’ssociety. Implementation schedule will be worked for phase wise implementation of themitigation measures after completion of detailed designs. In the pre-constructionphase of the project the supervision consultants shall review the EMP to identifyenvironmental and social issues and arrive at a suitable strategy for implementation.The activities to be carried out and the target dates will be worked out after completionof detailed designs.
8.6 INSTITUTIONAL STRENGTHENINGThe management of M/s SSC- DSR Project will evaluate the organizational structurewith respect to inadequacies in implementing the environment management plans.The project is typical as the responsibility of management lies with theowners/residents during occupation stage. The owners form a cooperativesociety/association to manage the utilities and common areas in a normal case. TheM/s SSC- DSR Project will have little role to play in environment management. Hence itis suggested to explore the possibility of co-opting a member from M/s SSC- DSR Projectinto these societies so as the spirit of environment management plan is not lost. Thecommon areas, electrical supply, street lighting, open space of central green will be
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taken over and managed by the HMDA/GHMC and TRANSCO. The role of residents islimited to being stakeholders with little say in the day-to-day matters; the townplanning agencies and the government must address this issue.
The Environment Management Plan envisages on-site monitoring of constructionactivities for environmental pollution and will involve collection of samples and theirsubsequent analysis. For this purpose two chemists would be required especially whenthe implementation of the two phases goes on simultaneously. Induction of two moreassistant engineers, one each for the biophysical and social environment will also benecessary.
8.7 TRAININGThe existing supervising staff and the additional staff have to be trained to effectivelycarry out.
Co-ordinate, with supervision consultants and contractors on compliancemonitoring of mitigation measures during construction phase.
Monitoring of environmental components in the operation stage; Co-ordinate with concerned departments on environmental issues; Environmental impact studies for future housing projects; Liase with State and Government of India on fiscal policies to reduce environmental
pollution from housing activity.
8.8 ENVIRONMENTAL MONITORING8.8.1 IntroductionThe environmental monitoring programme provides such information on whichmanagement decision may be taken during construction and occupation phases. Itprovides basis for evaluating the efficiency of mitigation and enhancement measuresand suggest further actions that need to be taken to achieve the desired effect.The monitoring includes:(i) Visual observations;(ii) Selection of environmental parameters at specific locations;(iii) Sampling and regular testing of these parameters.
8.8.2 ObjectivesThe objectives of the environmental monitoring programme are: Evaluation of the efficiency of mitigation and enhancement measures; Updating of the actions and impacts of baseline data; Adoption of additional mitigation measures if the present measures are insufficient; Generating the data, which may be incorporated in environmental management
plan in future projects.
8.8.3 MethodologyMonitoring methodology covers the following key aspects: Components to be monitored; Parameters for monitoring of the above components;
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Monitoring frequency; Monitoring standards; Responsibilities for monitoring; Direct responsibility, Overall responsibility; Monitoring costs.
Environment monitoring of the parameters involved and the threshold limits specifiedare discussed below.
8.8.4 Ambient Air Quality (AAQ) MonitoringAmbient air quality parameters recommended for road transportation developmentsare Respirable Particulate Matter (RPM), Suspended Particulate Matter (SPM), Oxidesof Nitrogen (NOX), Sulphur Dioxide (SO2) and Lead (Pb). These are to be monitored atdesignated locations starting from the commencement of construction activity. Datashould be generated over three days at all identified locations in accordance to theNational Ambient Air Quality Standards (table 8.2) location, duration and the pollutionparameters to be monitored and the responsible institutional arrangements aredetailed out in the Environment Monitoring Plan.
Table 8.2 National Ambient Air Quality StandardsS. No Pollutant Time
WeightedAverage
Concentration in Ambient Air
Industrial,Residential, Rural andOther Area
EcologicalSensitiveArea(Notified byCentralGovernment)
Methods ofMeasurement
(1) (2) (3) (4) (5) (6)1 Sulphur Dioxide
(SO2), µg/m3Annual*
24 Hours**
50
80
20
80
Improved westand GaekeUltravioletfluorescence
2 Nitrogen Dioxide(NO2), µg/m3
Annual*
24 Hours**
40
80
30
80
Modified Jacob &Hochheiser (Nn-Arsenite)Chemiluminescence
3 ParticulateMatter (Size Lessthan 10µm) orPM10 µg/m3
Annual*
24 Hours**
60
100
60
100
GravimeticTOEMBeta Attenuation
4 ParticulateMatter (Size Lessthan 2.5µm) orPM2.5 µg/m3
Annual*
24 Hours**
40
60
40
60
GravimeticTOEMBeta Attenuation
5 Ozone (O3)µg/m3
8 hours** 100 100 UV PhotometricChemilminescenceChemical Method
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S. No Pollutant TimeWeightedAverage
Concentration in Ambient Air
Industrial,Residential, Rural andOther Area
EcologicalSensitiveArea(Notified byCentralGovernment)
Methods ofMeasurement
1 hour** 180 1806 Lead (Pb) µg/m3 Annual*
24 hours**
0.50
1.0
0.50
1.0
AAS /ICP methodafter sampling onEPM 2000 orequivalent filterpaperED-XRF usingTeflon filter
7 CarbonMonoxide (CO)mg/m3
8 hours**
1 hour**
02
04
02
04
Non DispersiveInfra Red (NDIR)Spectroscopy
8 Ammonia (NH3)µg/m3
Annual*24 hours**
100400
100400
ChemilminescenceIndophenol bluemethod
9 Benzene (C6H6)µg/m3 Annual* 05 05
GasChromotographybased continuousanalyzerAbsorption andDesorptionfollowed by GCanalysis
10 Benzo(o)Pyrene(BaP) –Particulate Phaseonly, ng/m3
Annual* 01 01 Solvent extractionfollowed byHPLC/GC analysis
11 Arsenic (As),ng/m3
Annual* 06 06 AAS/ICP methodafter sampling onEPM 2000 orequivalent filterpaper
12 Nickel (Ni),ng/m3
Annual* 20 20 AAS/ICP methodafter sampling onEPM 2000 orequivalent filterpaper
Source:Anon 1996-97, National Ambient Air Quality Monitoring Series NAQMS/a/1996-97, Central Pollution Control Board, Delhi.
*Average Arithmetic mean of minimum 104 measurements in a year taken for a week24 hourly at uniform interval.
**24 hourly/8 hourly values should meet 98 percent of the time in a year
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants8 - 14
8.8.5 Water Quality MonitoringThe physical and chemical parameters recommended for analysis of water qualityrelevant to road development projects are pH, total solids, total dissolved solids, totalsuspended solids, oil and grease, COD, chloride, lead, zinc and cadmium. The location,duration and the pollution parameters to be monitored and the responsibleinstitutional arrangements are detailed in the Environmental Monitoring Plan. Themonitoring of the water quality is to be carried out at all identified locations inaccordance to the Indian Standard Drinking Water Specification – IS 10500: 1991(stated in table 8.3)
Table 8.3 Indian Standard Drinking Water Specifications – IS: 10500:1991Sl No Substance or
CharacteristicsRequire
ment(Desirable Limit)
UndesirableEffect Outsidethe Desirable
Limit Perm
issi
ble
Lim
it in
the
Abse
nce
ofAl
tern
ate
Sour
ce
Methods ofTest (Ref. To
IS)
Remarks
ESSENTIAL CHARACTERISTICS1 Colour, Hazen
units, Max.5 Above 5,
consumeracceptancedecreases
25 3025 (Part 4)1983
Extended to25 only iftoxicsubstancesare notsuspected,in absenceof alternatesources
2 Odour Unobjectionable
- - 3025 (Parts5):1984
a) Test coldand whenheatedb) Test atseveraldilutions
3 Taste Agreeable
- - 3025 (Part 7and 8)1984
Test to beconductedonly aftersafety hasbeenestablished
4 Turbidity NTU,Max.
5 Above 5,consumeracceptancedecreases
10 3025 (Part 10)1984
-
5 pH Value 6.5 to 8.5 Beyond thisrange, thewater will affect
Norelaxati
on
3025 (Part 11)1984
-
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants8 - 15
Sl No Substance orCharacteristics
Requirement
(Desirable Limit)
UndesirableEffect Outsidethe Desirable
Limit Perm
issi
ble
Lim
it in
the
Abse
nce
ofAl
tern
ate
Sour
ce
Methods ofTest (Ref. To
IS)
Remarks
the mucousmembraneand/or watersupply system
6 Total hardness(as CaCO3)mg/l, Max
300 Encrustation inwater supplystructure andadverse effectson domestic use
600 3025 (Part 21)1983
-
7 Iron (as Fe)mg/l, Max
0.3 Beyond thislimittaste/appearance are affected,has adverseeffect ondomestic usesand watersupply struc-tures, andpromotes ironbacteria
1 32 of 3025 :1964
-
8 Chlorides (as CI)mg/l, Max
250 Beyond thislimit, taste,corrosion andpalatibility areaffected
1000 3025 (Part 32)1988
-
9 Residual, freechlorine, mg/l,Min
0.2 - - 3025 (Part 26)1986
To beapplicableonly whenwater ischlorinated.Tested atconsumerend. Whenprotectionagainst viralinfection isrequired, itshould beMin 0.5mg/l
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants8 - 16
Sl No Substance orCharacteristics
Requirement
(Desirable Limit)
UndesirableEffect Outsidethe Desirable
Limit Perm
issi
ble
Lim
it in
the
Abse
nce
ofAl
tern
ate
Sour
ce
Methods ofTest (Ref. To
IS)
Remarks
DESIRABLE CHARACTERISTICS1 Dissolved solids
mg/l, Max500 Beyond this
palatabilitydecreases andmay causegastro intestinalirritation
2000 3025 (Part 16)1984
-
2 Calcium (as Ca)mg/l, Max
75 Encrustation inwater supplystructure andadverse effectson domestic use
200 3025 (Part 40)1991
-
3 Magnesium (asMg), mg/l, Max
30 Encrustation towater supplystructure andadverse effectson domestic use
100 16, 33, 34 of IS3025: 1964
-
4 Copper (as Cu)mg/l, Max
0.05 Astringenttaste,discolorationand corrosion ofpipes, fittingand utensils willbe causedbeyond this
1.5 36 of 3025:1964
-
5 Manganese (asMn) mg/l, Max
0.1 Beyond thislimittaste/appearance are affected,has adverseeffects ondomestic usesand watersupplystructures
0.3 35 of 3025:1964
-
6 Sulphate (as200 SO4) mg/l,Max
200 Beyond thiscauses gastrointestinal irrita-tion whenmagnesium orsodium arepresent
400 3025 (Part 24)1986
May beextendedup to 400provided(as Mg)does notexceed 30
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants8 - 17
Sl No Substance orCharacteristics
Requirement
(Desirable Limit)
UndesirableEffect Outsidethe Desirable
Limit Perm
issi
ble
Lim
it in
the
Abse
nce
ofAl
tern
ate
Sour
ce
Methods ofTest (Ref. To
IS)
Remarks
7 Nitrate (as NO2)mg/l, Max
45 Beyond this,may causemethaemoglobinemia
100 3025 (Part 34)1988
-
8 Fluoride (as F)mg/l, Max
1 Fluoride may bekept as low aspossible. Highfluoride maycause fluorosis
1.5 23 of 3025:1964
-
9 Phenoliccompounds (AsC6H5OH) mg/l,Max
0.001 Beyond this, itmay causeobjectionabletaste and odour
0.002 54 of 3025:1964
-
10 Mercury (as Hg)mg/l, Max
0.001 Beyond this, thewater becomestoxic
Norelaxati
on
(see Note)Mercury ionanalyser
To betestedwhenpollution issuspected
11 Cadmium (asCd), mg/l, Max
0.01 Beyond this, thewater becomestoxic
Norelaxati
on
(See note) To betestedwhenpollution issuspected
12 Selenium (asSe), mg/l, Max
0.01 Beyond this, thewater becomestoxic
Norelaxati
on
28 of 3025:1964
To betestedwhenpollution issuspected
13 Arsenic (As As)mg/l, max
0.05 Beyond this, thewater becomestoxic
Norelaxati
on
3025 (Part 37)1988
To betestedwhenpollution issuspected
14 Cyanide (AsCN), mg/l, Max
0.05 Beyond thislimit, the waterbecomes toxic
Norelaxati
on
3025 (Part 27)1986
To betestedwhenpollution issuspected
15 Lead (as Pb),mg/l, Max
0.05 Beyond thislimit, the waterbecomes toxic
Norelaxati
on
(see note) To betestedwhenpollution is
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants8 - 18
Sl No Substance orCharacteristics
Requirement
(Desirable Limit)
UndesirableEffect Outsidethe Desirable
Limit Perm
issi
ble
Lim
it in
the
Abse
nce
ofAl
tern
ate
Sour
ce
Methods ofTest (Ref. To
IS)
Remarks
suspected16 Zinc (As Zn).
Mg/l, Max5 Beyond this
limit it cancause astringenttaste and anopalescence inwater
15 39 of 3025:1964)
To betestedwhenpollution issuspected
17 Anionicdetergents (AsMBAS) mg/l,Max
0.2 Beyond thislimit it cancause a lightfroth in water
1 Methylene-blue extractionmethod
To betestedwhenpollution issuspected
18 Chromium (AsCr6+) mg/l, Max
0.05 May becarcinogenicabove this limit
Norelaxati
on
38 of 3025:1964
To betestedwhenpollution issuspected
19 Poly nucleararomatichydrocarbons(as PAH) g/1,Max
- May becarcinogenicabove this limit
- - -
20 Mineral oilmg/l, Max
0.01 Beyond thislimit un-desirable tasteand odour afterchlorinationtake place
0.03 GasChromatographic method
-
21 Pesticides mg/l,Max
Absent Toxic 0.001 - -
22 Radioactive materials: 58 of3025:01964
-
23 a) Alphaemitters Bq/l,Max
- - 0.1 - -
24 Beta emiterspci/1, Max
- - 1 - -
25 Aluminium (asAl), mg/l, Max
200 Beyond thislimit tastebecomesunpleasant
600 13 of3025:1964
-
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants8 - 19
Sl No Substance orCharacteristics
Requirement
(Desirable Limit)
UndesirableEffect Outsidethe Desirable
Limit Perm
issi
ble
Lim
it in
the
Abse
nce
ofAl
tern
ate
Sour
ce
Methods ofTest (Ref. To
IS)
Remarks
26 Aluminium (asAl), mg/l, Max
0.03 Cumulativeeffect isreported tocause dementia
0.2 31 of 3025:1964
-
27 Boron, mg/l,Max
1 - 5 29 of 3025:1964
-
Source: Indian Standard Drinking Water Specification-IS10500:1991
8.8.6 Noise Level MonitoringThe measurements for monitoring noise levels would be carried out at all designatedlocations in accordance to the Ambient Noise Standards formulated by Central PollutionControl Board (CPCB) in 1989 (refer table 13) Sound pressure levels would bemonitored on twenty-four hour basis. Noise should be recorded at a “A” weightedfrequency using a “slow time response mode” of the measuring instrument. Thelocation, duration and the noise pollution parameters to be monitored and theresponsible institutional arrangements are detailed in the Environmental MonitoringPlan (Table 8.5)
Table 8.4 Noise level standards (CPCB)Type Noise level for Day
Time Leq dB(A)Noise level for
Night Time dB(A)Industrial area 75 70Commercial area 65 55Residential area 55 45Silence zone 50 40Day time - 6.00 am - 9.00 pm (15 hours)Night time - 9.00 pm - 6.00 am (9 hours)
The monitoring plan along with the environmental parameters and the time frame ispresented in the Table 8.5 environmental monitoring plan
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants8 - 20
Table 8.5 Environmental Monitoring Plan
Envi
ronm
ent
com
pone
nt
Proj
ect S
tage MONITORING Institutional
Responsibilities
Parameters
SpecialGuidanc
e
Standards Location Freque
ncy Duration Implementation
Supervision
Air
Cons
truc
tion
stag
e
PM10,PM2.5,SO2, NOX,CO, HC
Highvolumesamplerto belocated50 mfrom theplant inthedown-winddirec-tion. Usemethodspecifiedby CPCBforanalysis
Air(Preven-tion andControlof Pollu-tion)Rules,CPCB,1994
Whereverthecontractordecides tolocate theCrusher ata distanceof 100 mfrom thecrusher.
Onceeveryseasonfor 2years
Continuous 24hours/or for 1fullworkingday
Contractorthroughts -provedmoni-toringagency
EnvironmentalEngineer, GHMC
Cons
truc
tion
stag
e
PM10,PM2.5,
HighVolumeSamplerto belocated40 mfrom theROW inthedown-winddirec-tion. Usemethodspecifiedby CPCBforanalysis
Air(Preven-tion andControlof Pollu-tion)Rules,CPCB,1994
Locationofconstruction area
Onceeverymonthfor 2years
Continuous 24hours/or for 1fullworkingday
Contractorthroughts -provedmoni-toringagency
EnvironmentalEngineer, M/sSSC- DSRProjects
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants8 - 21
Envi
ronm
ent
com
pone
nt
Proj
ect S
tage MONITORING Institutional
Responsibilities
Parameters
SpecialGuidanc
e
Standards Location Freque
ncy Duration Implementation
Supervision
Occ
upat
ion
stag
e
PM10,PM2.5,SO2, NOx,CO, Pb, HC
HighVolumeSamplerto belocatedat 15 mfrom theedge ofpave-ment
Air(Preven-tion andControlof Pollu-tion)Rules,CPCB,1994
1. Site Continuous24 hours
Society Society
Wat
er Q
ualit
y
Cons
truc
tion
stag
e
pH, BOD,COD, TDS,TSS, DO,Oil &Greaseand Pb
Grabsamplecollectedfromsourceandanalyseas perStandardMethodsforExamination ofWaterandWastewater
Waterqualitystandards byCPCB
1. Kondakal tank .
2. Osmansagar
End ofsum-merbeforetheonsetofmon-sooneveryyearfor 2years
- Contractorthroughts -provedmoni-toringagency
EnvironmentalEngineer, M/sSSC- DSRProjects
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants8 - 22
Envi
ronm
ent
com
pone
nt
Proj
ect S
tage MONITORING Institutional
Responsibilities
Parameters
SpecialGuidanc
e
Standards Location Freque
ncy Duration Implementation
Supervision
Wat
er Q
ualit
y
Occ
upat
ion
stag
e
pH,BOD,COD,TDS,TSS,DO, Pb,Oil andGrease.
Grabsamplecollectedfromsourceandanalyseas perStandardMethodsforExamination ofWaterandWastewater
Waterqualitystandards byCPCB
1. Kondakal tank.
2. Osmansagar
3. STPInfluent
4. STPtreatedEffluent
End ofsum-merbeforetheonsetofmon-soon in2018,2019and2020
Daily
Daily
- M/s SSC-DSRProjects
Society
Society
M/s SSC-DSRProjects
Society
Society
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants8 - 23
Envi
ronm
ent
com
pone
nt
Proj
ect S
tage MONITORING Institutional
Responsibilities
Parameters
SpecialGuidanc
e
Standards Location Freque
ncy Duration Implementation
Supervision
Noi
se le
vels
Cons
truc
tion
stag
e
Noiselevels ondB (A)scale
Freefield at 1m fromtheequipmentwhosenoiselevelsarebeingdeter-mined.
Noisestan-dards byCPCB
Atequipment yards
Onceeverymonth(max)for twoyears,asrequired bytheengineer
Readingsto betaken at15secondsintervalfor 15minuteseveryhour andthenaveraged.
Contractorthroughts -provedmoni-toringagency
EnvironmentalEngineer, M/sSSC- DSRProjects
Noiselevels ondB (A)scale
Equivalent noiselevelsusing aninte-gratednoiselevelmeterkept at adistanceof 15from theinternalroads
Noisestan-dards byCPCB
Asdirectedby theEngineer(Atmaximum5locations)
Thricea yearfor 2yearsduringtheconstructionperiod
Readingsto betaken at15secondsintervalfor 15minuteseveryhour andthenaveraged
Contractorthroughts -provedmoni-toringagency
EnvironmentalEngineer, M/sSSC- DSRProjects
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants8 - 24
Envi
ronm
ent
com
pone
nt
Proj
ect S
tage MONITORING Institutional
Responsibilities
Parameters
SpecialGuidanc
e
Standards Location Freque
ncy Duration Implementation
Supervision
Occ
upat
ion
stag
e
Noiselevels ondB (A)scale
Equivalent noiselevelsusing aninte-gratednoiselevelmeterkept at adistanceof 15fromedge ofpavement
Noisestan-dards byCPCB
1. At allboundaries of thesite.
Thricein op-erationperiod
Readingsto betaken at15secondsintervalfor 15minuteseveryhour andthenaveraged.
Societythroughanapprovedmonitoringagency
Society
Soil
Cons
truc
tion
stag
e
Monitoring of Pb,Cr, Cd
Sampleof soilcollectedtoacidifiedandanalysedusingabsorptionspectropho-tometry
Threshold foreachcontami-nant setby IRISdatabase ofUSEPAuntilnationalstan-dardsarepromulgated.
Atproductiveagricultural lands intheprojectimpactarea to beidentifiedby theenvironmentalengineer
Once ayearfor 2years
- Contractorthroughanapprovedmonitoringagency
EnvironmentalEngineer, M/sSSC- DSRProjects
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants8 - 25
Envi
ronm
ent
com
pone
nt
Proj
ect S
tage MONITORING Institutional
Responsibilities
Parameters
SpecialGuidanc
e
Standards Location Freque
ncy Duration Implementation
Supervision
Occ
upat
ion
stag
e
Monitoring of heavymetals, oilandgrease
Sampleof soilcollectedtoacidifiedandanalysedusingabsorptionspectropho-tometry
Threshold foreachcontami-nant setby IRISdatabase ofUSEPAuntilnationalstan-dardsarepromulgated.
Ataccident/spilllocationsinvolvingbulktransportcarryinghazardousmaterials(5locationsmaximum)
As pertheoccurrence ofsuchincidents
Thrice inop-erationstage formonitoringturbidity
Society Society
Soil
Eros
ion
Cons
truc
tion
stag
e
Turbidityin Stormwater
Silt load inponds
Visualobser-vationsduringsitevisits
Asspecifiedby theWaterqualitystandards
1. At thedrains,andKondakal tank.
2.OsmanSagar
Pre-monsoon andpost-mon-soonseasons for 2years
Engineer M/s SSC-DSRProjects
Occ
upat
ion
stag
e
Turbidityin Stormwater
Silt load inponds
Visualobser-vationsduringsitevisits
Asspecifiedby theWaterqualitystandards
2. AtwaterKondakaltank
Thricein pre-monsoon andpost-monsoonseasons in2018,2019and2020.
Society Society
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants8 - 26
Envi
ronm
ent
com
pone
nt
Proj
ect S
tage MONITORING Institutional
Responsibilities
Parameters
SpecialGuidanc
e
Standards Location Freque
ncy Duration Implementation
Supervision
Cons
truc
tion
Site
s and
Con
stru
ctio
nCa
mps
Cons
truc
tion
Stag
e
Monitoring of:1. Storage
Area2.
DrainageArrangements
3.Sanitation inConstructionCamps
Visualobser-vationswillsuffice.Theseare to becheckedasspecifiedin theEMP.
To thesatisfac-tion ofthe M/sSSC- DSRProjectand thestan-dardsgiven inthereporting form.
At Storagearea andcon-structioncamps
Quarterly intheconstructionstage.
SupervisionEngineer/consultant
M/s SSC-DSRProjects
8.9 REPORTING SYSTEMReporting system provides the necessary feedback for project management to ensurequality of the works and that the program is on schedule. The rationale for a reportingsystem is based on accountability to ensure that the measures proposed as part of theEnvironment Management Plan get implemented in the project.
The reporting system will operate linearly with the contractor who is at the lowest rungof the implementation system reporting to the Supervision Consultant, who in turn shallreport to the M/s SSC- DSR Projects. All reporting by the contractor and SupervisionConsultant shall be on a quarterly basis. The M/s SSC- DSR Projects shall be responsiblefor preparing targets for each of the identified EMAP activities. All subsequent reportingby the contractor shall be monitored as per these targets set by the M/s SSC- DSRProject before the contractors move on to the site. The reporting by the Contractor willbe a monthly report like report of progress on construction and will form the basis formonitoring by the M/s SSC- DSR Projects either by its own Environmental Cell or theEnvironmental Specialist hired by the Supervision Consultant.
Monitoring of facilities at construction camps Monitoring of air, noise, soil and water parameters including silt load Monitoring of survival rate of plantation. Monitoring of cleaning of drains and water bodies.
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants8 - 27
8.10 ENVIRONMENTAL MANAGEMENT BUDGETThe environmental budget for the various environmental management measuresproposed in the EMP is detailed in table 8.6. There are several other environmentalissues that have been addressed as part of good engineering practices, the costs forwhich have been accounted for in the Engineering Costs. Moreover, sinceenvironmental enhancements have not been finalized at this stage, the table projectsthe aspect wise and the detailed cost estimate is presented in Annexure A
Table 8.6 Environmental Budgets
S.NO. Description
Capital cost in Rs. Lakhs Recurring cost in Rs. Lakhs
ConstructionPhase
OccupationPhase
ConstructionPhase
OccupationPhase
1 Air PollutionControl 15.01 -- 0.73 5.53
2 Water PollutionControl 192.49 -- 7.00 150.00
3 Noise PollutionControl 1.11 -- 0.58 0.26
4EnvironmentalMonitoring &Management
0.21 30.00 0.40 45.00
5Green belt &Open areadevelopment
83.97 16.79 0.30 3.60
6 Solid Waste 3.51 0.35 0.65 1.76
7 Others 82.24 -- 6.84 7.50
Total 378.54 47.14 16.49 213.64
8.11 Horticultural and Landscaping Works(a) ScopeThe Horticultural and Landscaping works may be entrusted to a contractor or may betaken by the horticulture department of the M/s SSC- DSR Projects. It would generatelocal employment if the plantation, upkeep and maintenance of the green belt areentrusted to local VSS bodies. Detailed drawings and designs of landscaping will bedrawn after completion of the detailed designing. The following precautions must betaken while undertaking horticulture and landscaping works. The M/s SSC- DSR Projectswill have greenery by way of avenue plantation and central green. The scheme ofplantation and the figures are presented in mitigation chapter. The upkeep and themanagement of the greening is presented as follows;
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants8 - 28
b) MaterialsPlant MaterialsPlant Materials shall be well formed and shaped true to type, and free from disease,insects and defects such as knots, sun-scaled, windburn, injuries, abrasion ordisfigurement.
All plant materials shall be healthy, sound, vigorous, free from plant diseases, insect’spests, of their eggs, and shall have healthy, well-developed root systems. All plants shallbe hardy under climatic conditions similar to those in the locally of the project. Plantssupplied shall to confirm to the names listed on both the plan and the plant list. Noplant material will be accepted if branches are damaged or broken. All material must beprotected from the sun and weather until planted.
Any nursery stock shall have been inspected and approved by the EnvironmentalSpecialist or the Engineer.
All plants shall conform to the requirements specified in the plant list. Except thatplants larger then specified may be used if approved, but use of such plants shall notincrease the contract price. If the use of the larger plant is approved, the spread of rootor ball of earth shall be increased in proportion to the size of plant.
Deliver plants with legible identification labels.
Top Soil (Good Earth)Topsoil or good earth shall be a friable loam, typical of cultivated topsoils of the localitycontaining at least 2% of decayed organic matter (humus). It shall be taken from a well-drained arable site. It shall be free of subsoil, stones, earth skids, sticks, roots or anyother objectionable extraneous matter or debris. It shall contain no toxic material. Notopsoil shall be delivered in a muddy condition. It shall have pH value ranging between6 and 8.5.
FertilizerMeasurement of sludge shall be in stacks, with 8% reduction for payment. It shall befree from extraneous matter, harmful bacteria insects or chemicals. (Subjected tosafety norms).
Root SystemThe root system shall be conducive to successful transplantation. While necessary, theroot-ball shall be preserved by support with Hessian or other suitable material. On soilswhere retention of a good ball is not possible, the roots should be suitably protected insuch a way that the roots are not damaged.
ConditionTrees and shrubs shall be substantially free from pests and diseases, and shall bematerially undamaged. Torn or lacerated roots shall be pruned before dispatch. Noroots shall be subjected to adverse conditions such as prolonged exposure to dryingwinds or subjection to water logging between lifting and delivery.
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants8 - 29
(c) Supply and SubstitutionUpon submission of evidence that certain materials including plant materials are notavailable at time of contract, the contractor shall be permitted to substitute with anequitable adjustment of price. All substitutions shall be of the nearest equivalentspecies and variety to the original specified and shall be subjected to the approval ofthe Landscape Architect.
(d) PackagingPackaging shall be adequate for the protection of the plants and such as to avoidheating or drying out.
(e) MarkingEach specimen of tree and shrub, or each bundle, shall be legibly labelled with thefollowing particulars: Its name. The name of the supplier, unless otherwise agreed. The date of dispatch from the nursery.
(f) Tree PlantingPlants and ShrubsTrees should be supplied with adequate protection as approved. After delivery, ifplanting is not to be carried out immediately, balled plants should be placed back toback and the ball covered with sand to prevent drying out. Bare rooted plants can beheeled in by placing the roots in prepared trench and covering them with earth, whichshould be watered into, avoid air pockets round the roots. Trees and shrubs shall beplanted as shown in architectural drawings and with approval of site supervisionengineer.
Digging of PitsTree pits shall be dug a minimum of three weeks prior to backfilling. The pits shall be120 cm in diameter and 120 cm deep. While digging the pits, the topsoil up to a depthof 30 cm may be kept aside, if found good (depending upon site conditions), and mixedwith the rest of the soil.
If the side of the below, it shall be replaced with the soil mixture as specified furtherherein. If the soil is normal it shall be mixed with manure; river sand shall be added tothe soil if it is heavy. The bottom of the pit shall be forked to break up the subsoil.
Back FillingThe soil back filled watered through and gently pressed down, a day previous toplanting, to make sure that it may not further settle down after planting. The soil shallbe pressed down firmly by treading it down, leaving a shallow depression all round forwatering.
PlantingNo tree pits shall be dug until final tree position has been pegged out for approval. Careshall be taken that the plant sapling when planted is not be buried deeper than in thenursery, or in the pot. Planting should not be carried out in waterlogged soil. Plant
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants8 - 30
trees at the original soil depth; soil marks on the stem is an indication of this and shouldbe maintained on the finished level, allowing for setting of the soil after planting. Allplastic and other imperishable containers should be removed before planting. Anybroken or damage roots should be cut back to sound growth.
The bottom of the planting pit should be covered with 50mm to 75mm of soil. Bareroots should be spread evenly in the planting pit; and small mound in the centre of thepits on which the roots are placed will aid on even spread. Soil should be placed aroundthe roots, gently shaking the tree to allow the soil particles to shift into the root systemto ensure close contact with all roots and prevent air pockets. Back fill soil should befirmed as filling proceeds, layer by layer, care being taken to avoid damaging the roots,as follows:
The balance earth shall be filled in a mixture of 1:3 (1 part sludge to 3 part earth byvolume) with 50 gm potash, (Mop) 50gms of Super Phosphate and 1Kg. Neem oil cake.Aldrin or equivalent shall be applied every 15 days in a mixture of 5ml in 5 litres ofwater.
StakingNewly planted trees must be held firmly although not rigidly by staking to prevent apocket forming around the stem and newly formed fibrous roots being broken bymechanical pulling as the tree rocks.
Methods:The main methods of staking shall be:(a) A single vertical shake, 900mm longer than the clear stem of the tree, driven 600mm
to 900mm into the soil.(b) Two stakes as above driven firmly on either side of the tree with a cross bar to which
the stem is attached. Suitable for bare- rooted or Ball material.(c) A single stake driven in at an angle at 45 degrees and leaning towards the prevailing
wind, the stem just below the lowest branch being attached to the stake. Suitablefor small bare- rooted or Ball material
(d) For plant material 3m to 4.5m high with a single stem a three- wire adjustable guysystem may be used in exposed situations.
The end of stake should be pointed and the lower 1m to 1.2m should be coated with anon-injurious wood preservative allowing at least 150mm above ground level.
TyingEach tree should be firmly secured to the stake so as to prevent excessive movement.Abrasion must be avoided by using a buffer, rubber or Hessian, between the tree andstake. The tree should be secured at a point just below its lowest branch, and also justabove ground level; normally two ties should be used for tree. These should beadjusted or replaced to allow for growth.
WateringThe Landscape Contractor should allow for the adequate watering in of all newlyplanted trees and shrubs immediately after planting and he shall during the followinggrowing season, keep the plant material well watered.
Gadwal Estates Environmental Impact Assessment
Team Labs and Consultants8 - 31
FertilizingFertilising shall be carried out by application in rotation of the following fertilisers, every15 days from the beginning of the monsoon till the end of winter:
(1) Sludge or organic well-rotted dry farm yard manure: 0.05 cum or tussle.(2) Urea 25 gm.(3) Ammonium sulphate 25 gm.(4) Potassium sulphate 25 gm.
All shrubs, which are supplied pot grown, shall be well soaked prior to planting.Watering in and subsequent frequent watering of summer planted container- grownplants is essential.
(g) Shrub Planting In Planter BedsAll areas to be planted with shrubs shall be excavated, trenched to a depth of 750 mm,refilling the excavated earth after breaking clods and mixing with sludge in ratio 8:1 (8parts of stacked volume of earth after reduction by 20%: 1 part of stacked volume ofsludge after reduction by 8%.)Tall shrubs may need staking, which shall be provided if approved by the contractingconsulting engineer, depending upon the conditions of individual plant specimen.
For planting shrubs and ground cover shrubs in planters, good earth shall be mixed withsludge in the proportion as above and filled in planters.
Positions of planters shall be planted should be marked out in accordance with thearchitectural drawing. When shrubs are set out, precautions should be taken to preventroots drying. Planting holes 40 cm in diameter, and 40 cm deep should be excavated forlonger shrubs. Polythene and other non-perishable containers should be removed andany badly damaged roots carefully pruned. The shrubs should then be set in holes sothat the soil level, after settlement, will be original soil mark on the stem of the shrub.The holes should be back filled to half of its depth and firmed by treading. Theremainder of the soil can then be returned and again firmed by treading.
(h) GrassingPreparationDuring period prior to planting the ground shall be maintained free from weeds.Grading and final weeding of the area shall be completed at least three weeks prior tothe actual sowing. Regular watering shall be continued until sowing by dividing the areainto portions of approximately 5m squares by constructing small bunds to retain water.These 'bunds' shall be levelled just prior to sowing of grass plants; it shall be ensuredthat the soil has completely settled.
SoilThe soil itself shall be ensured to the satisfaction of Landscape Architect to be a goodfibrous loam, rich in humus.
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Sowing the grass rootsGrass roots (cynodon, dectylon or a local genus approved by the Landscape Architect)shall be obtained from a grass patch, seen and approved before hand.The grass roots stock received at site shall be manually cleared of all weeds and watersprayed over the same after keeping the stock in place protected from sun and drywinds.
Grass stock received at site may be stored for a maximum of three days. In casegrassing for some areas is scheduled for a later date fresh stock of grass roots shall beordered and obtained.
ExecutionSmall roots shall be dibbled about 5 cm apart into the prepared grounds. Grass willonly be accepted as reaching practical completion when germination has provedsatisfactory and all weeds have been removed.
MaintenanceAs soon as the grass is approximately a 3cm high it shall be rolled with a light woodenroller – in fine, dry weather – and when it has grown to 5 to 8 cm, above to groundweeds must be removed and regular cutting with the scythe and rolling must be begun.A top-dressing of an ounce of guano to the square yard or well decomposed wellbroken sludge manure shall be applied when the grass is sufficiently secure in theground to bear the mowing machine, the blades must be raised an inch above thenormal level for the first two or three cuttings. That is to say, the grass should be cut sothat it is from 4 to 5 cm in length, instead of the 3 cm necessary for mature grass.
In the absence of rain, in the monsoon, the lawn shall be watered every ten daysheavily, soaking the soil through to a depth of at least 20 cm.
Damage failure or dying back of grass due to neglect of watering especially for seedingout of normal season shall be the responsibility of the contractor. Any shrinkage belowthe specified levels during the contract or defect liability period shall be rectified at thecontractor's expense. The Contractor is to exercise care in the use of rotary cultivatorand mowing machines to reduce to a minimum the hazards of flying stones andbrickbats. All rotary mowing machines are to be fitted with safety guards.
RollingA light roller shall be used periodically, taking care that the area is not too wet andsodden.
EdgingThese shall be kept neat and must be cut regularly with the edging shears.
FertilizingThe area shall be fed once in a month with liquid manure prepared by dissolving 45gmsof ammonium sulphate in 5 litres of water.
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WateringWater shall be applied at least once in three days during dry weather. Wateringwhenever done should be thorough and should wet the soil at least up to a depth of20 cm.
WeedingPrior to regular mowing the contractor shall carefully remove rank and unsightly weeds.
CultivatingThe Landscape Contractor shall maintain all planted areas within Landscape contractboundaries for one year until the area is handed over in whole or in phases.Maintenance shall include replacement of dead plants, watering, weeding, cultivating,control of insects, fungus and other diseases by means of spraying with an approvedinsecticide or fungicide, pruning, and other horticulture operations necessary for propergrowth of the plants and for keeping the landscape sub-contract area neat inappearance.
Pruning and RepairsUpon completion of planting work of the landscape sub-contract all trees should bepruned and all injuries repaired where necessary. The amount of pruning shall belimited to the necessary to remove dead or injured twigs and branches and tocompensate for the loss of roots and the result of the transplanting operations. Pruningshall be done in such a manner as not to change the natural habit or special shape oftrees.
Tree GuardsWhere the tree guards are necessary, care should be taken to ensure that they do notimpede natural movement or restrict growth. Circular iron tree guards shall be providedfor the trees at enhancement locations. The specifications for which one given below:
Circular Iron Tree Guard with Bars.
The tree guard shall be 50 cm. in diameter.
The tree guards shall be formed of (i) 3 Nos. 25x25x3mm angle iron verticals 2.00m longexcluding splayed outward at lower end up to an extent of 10 cms. (ii) 3 Nos. 25x25mmMS flat rings fixed as per design (iii) 15 Nos. 1.55 metres long 6mm dia bars. Each ringshall be in two parts in the ratio of 1:2 and their ends shall be turned in radially for alength of 4 cm at which they are bolted together with 8mm dia and 30mm long MSbolts and nuts.
The vertical angle irons shall be welded to rings along the circumference with electricplant 15 Nos. bars shall be welded to rings at equal spacing along the circumference ofring. The lower end of the angle iron verticals shall be splayed outwards up to an extentof 10cm. The lower end of the flat of lower ring shall be at a height of 45cm. and upperend of the flat of top ring shall be at the height of 2.00 metres. The middle ring shall bein the centre of top and lower ring. The bars shall be welded to rings as shown in thedrawing. The entire tree guard shall be given two coats of paint of approved brand andof required shade over a priming coat of ready mixed primer of approved brand.
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(i) Nursery StackPlanting should be carried out as soon as possible after reaching the site. Whereplanting must be a necessity and/or be delayed, care should be taken to protect theplants from pilfering or damage from people animals. Plants with bare-roots should beheeled- in as soon as received or otherwise protected from drying out, and others setclosely together and protected from the wind. If planting is to be delayed for more thana week, packaged plants should be unpacked, the bundles opened up and each group ofplants heeled in separately and clearly labelled. If for any reason the surface of theroots becomes dry the roots should be thoroughly soaked before planting.
(j) Protective FencingAccording to local environment, shrubs shall be protected adequately from vandalismuntil established.
(l) CompletionOn completion, the ground shall be formed over and left tidy.
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Annexure – ADetailed Cost Estimate
DescriptionCapital cost in (Rs.Lakhs) Recurring cost in (Rs.Lakhs)
ConstructionPhase
OccupationPhase
ConstructionPhase
OccupationPhase
Air PollutionControl
DG Stack 1.91 0.382
Personal protective equipments 0.35 0.53 0.16
Equipment maintanence 0.50 0.20 0.09
Sprinkling of water 12.25 4.90Total 15.01 0.73 5.53
Water PollutionControl
Sedimentation tank 0.30 0.09
Rain water harvesting pits 0.98 0.14
Rain water harvesting sump (KL) 0.25
Sewage tratment plant (KLD) 165.00
Temperory Toilets 0.60 0.12
Dual Plumbing 25.61 6.40
STP maintanence 150.0Total 192.49 0.00 7.00 150.00
Noise PollutionControl
Personal protective equipments 0.35 0.35 0.11
Acoustic enclosures 0.76 0.23 0.1528Total 1.11 0.58 0.26
Environmentalmonitoring
Ambient air quality studies - Once in sixmonths - 2 locations 0.14 0.25
Water quality studies - Once a year - 2Locations 0.03 0.08
Noise studies - Once in six months - 2Locations 0.04 0.08
STP Lab 30.00 45.0Total 0.21 30.00 0.40 45.00
Green belt &Open area
development
Green belt 83.97 16.79 0.30
Horticulturists & Gardeners 3.60
Total 83.97 16.79 0.30 3.60
Solid WasteConstruction waste storage 2.00 0.20 0.50Garbage Segregation point 1.51 0.15 0.15 0.755Garbage Collection 1.0
Total 3.51 0.35 0.65 1.76
Others
Solar lighting 24.00 4.80 4.80Solar Heaters 40.00 0.80 0.8Barricade 2.24Safety Signage 2.00 0.40 0.4LED Lighting 1.47 0.74 0.147Roof insulation 12.53 1.25Training & Mobilisation 0.10 0.1
Total 82.24 0.00 6.84 7.50Grand Total 378.54 47.14 16.49 213.64
GADWAL ESTATESM/s SSC- DSR PROJECTSSURVEY NOS. 387, 388 & 394 to 404,
KONDAKAL, SHANKARPALLY,RANGA REDDY DISTRICT, TELANGANA
Studies and Documentation by:Team Labs and Consultants(An ISO Certified Organization)B-115 - 117 & 509, Annapurna Block,Aditya Enclave, Ameerpet,Hyderabad- 500 038Phone: 91-040-23748555/23748616Fax : 91-040-23748666e-mail: [email protected]