M/s. RDB HYD INFRASTRUCTURE PVT. LTD., SURVEY NO. 202/AA and 202/1/AA, MADEENAGUDA, SERILINGAMPALLY MANDAL, RANAGA REDDY DISTRICT
1. Conceptual Plan 2. EMP Report Residential Apartments Construction Project
Submitted By Studies & Documentation by M/s RDB HYD INFRASTRUCTURE PVT. LTD., M/s Team Labs and Consultants Plot No 502B, Amara Jyothi Building, B-115, 116, 117 & 509, 4th floor, Road No 31, Annapurna Block, Aditya Enclave, Jubileehills, Ameerpet, Hyderabad- 500 038 Hyderabad – 500 033 Phone: 91-040-23748555/616 Fax : 91-040-23748666 e-mail: [email protected]
SUBMITTED TO STATE LEVEL ENVIRONMENT IMPACT ASSESSMENT AUTHORITY, TELANGANA GOVERNMENT OF INDIA RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
2.0 PROJECT DESCRIPTION
This chapter details the need for the project, description of the proposed project and alternatives, and identifies the valued ecosystem components. The project will be spread over an area of 2.853 hectares of land for residential purpose with necessary amenities in Survey nos. 202/AA and 202/1/AA, Madeenaguda, Serilingampally Mandal, Ranaga Reddy District. The site area falls under Greater Municipal Corporation of Hyderabad (GHMC) area. The project is envisaged as a gated community with environment friendly features to cater to the growing market demand for quality housing. The demand for quality housing from this area will be partially met from this project. The area has a number of layouts and rapidly turning into a residential/commercial zone for various types of socio economic sectors.
2.1 THE PROJECT LOCATION: The project will be spread over an area of 2.853 hectares of land for residential purpose with necessary amenities in Survey nos. 202/AA and 202/1/AA, Madeenaguda, Serilingampally Mandal , Ranaga Reddy District. The project site is surrounded by open lands in north and east directions. A existing 18 m wide road in south direction connecting Miyapur-Nizampet road. The nearest railway station is Hafeezpet railway station at a distance of 3.2 km.
2.2 PROJECT DESCRIPTION 2.2.1 DESIGN STAGE The project will be spread over an area of 2.853 hectares is proposed to develop for residential development with necessary amenities. It is proposed to provide residential units of 810 nos. and amenities block. The land allocation will be optimized to ensure compliance with the regulations of GHMC. The land allocation will be optimized to ensure compliance with the regulations of GHMC. The land allocation and the number of units proposed are presented in table 2.1.
It is proposed to provide residential units of 810 nos. The land allocation will be optimized to ensure compliance with the regulations of GHMC. The water requirement of the project during operation will be drawn from HMWSSB. Sewage treatment plant will be provided to treat the sewage/wastewater. Water conservation measures will be incorporated in the plumbing designs. Water recycling/reuse will be adopted by way of using treated sewage for green belt development and for flushing. The rainwater will be let-out into the storm water drain and discharged into side drains of road. The required power will be drawn from the TRANSCO and providing open space between each flat to allow sunlight will optimize the energy requirement. Solar Energy will be used for fencing. The designs of the houses will also incorporate Indian Architectural principles of “Vastu”, as the market demands the same. Construction material will be drawn from local sources. The parking provision follows the guidelines prescribed by GHMC and Building policy. The layout of the project site and individual layout of building is presented in fig. 2.1 and fig 2.2 respectively.
2 - 1 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Table 2.1 Land Allocation for various purposes Total Site No of Total No of Total Built up Land Use Area in Floors Units area (m2) m2 Block - A SC+C+G +9 90 798.4 9688.4 Block - B SC+C+G +9 90 865.8 9755.8 Block - C SC+C+G +9 90 1098.0 10980.0 Block - D SC+C+G +9 90 1098.0 10980.0 Block - E SC+C+G +9 90 987.8 9877.8 Block - F SC+C+G +9 90 798.4 9688.4 Block - G SC+C+G +9 90 1098.0 10980.0 Block - H SC+C+G +9 90 1098.0 10980.0 Amenities SC+C+G+4 762.8 3841.0 LIG & EWS - 1 S + 5 30 203.6 1018.0 LIG & EWS - 2 S + 5 30 203.6 1018.0 LIG & EWS - 3 S + 5 30 203.6 1018.0 Green Area 2950.0 Road Area 7845.8 Open Area 8518.2 Parking Sub cellar 21760.0 Cellar 21650.0 Total 810 28530.0 133235.5
Parking It is proposed to provide Sub cellar and cellar floor for parking. The parking provision follows the guidelines prescribed by FAR and Building policy. The number of parking spaces provided is presented in table 2.2. Table 2.2 Parking Space Provision of the Project Floor 4 - Wheeler 2 - Wheeler Sub cellar 1035 20 Cellar 381 147 Total 1416 167
Circulation plan Ground Floor Drive Way : 10.0 m No of Cellars : 2 No of Ramps : 4 Width of Ramp : 5.4 m Cellar Driveway : 4.5 m No of Lifts :24 Capacity of each Lifts: 10 - 20 pax. Connecting Road : 18 m Row
2 - 2 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Circulation Plan: The project site is classified as residential as per master plan. The connecting roads to the site are 18m. The width of connecting roads is 12 m with a capability of 1800 PCU. The present level of service is 0.3. The level of service of connecting road shall reduce from 0.3 to 0.35 and the LOS remains class B (Very Good).
Modified Los & Performance Existing Existing Modified Modified Additional Modified Road volume, volume/ Volume/ Los & volume Volume PCU/hr Capacity Capacity performance High “B” Very Tension 543 0.302 89 632 0.351 Good line raod
2 - 3 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Fig. 2.1 Site Layout
B LOCK -II , B LOCK -II I, TOTLOT 710 SMT
B LOCK -I,
TOT LOT 792.00 SMT
TOT LOT 1448 Smt
2 - 4 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Fig. 2.2 Floor plans
2 - 5 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Fig. 2.3 Parking floor plans
SCALE 1: 200
16.13M 12.54M 65.10M 10.95M 20.43M
10.98M 23.21M 21.74M RETAINING WALL
6.58M 4.57M
PROPERTY LINE 5.39m
slope 1: 8 DN UP 9.79M
CV CV DUCT DUCT
DRIVE WAY DRIVE WAY
CV CV DUCT DUCT
DN DN
LIFT CV LIFT CV slope 1: 1: 8 slope 2.22x 2.22x UP 2.45m DUCT UP 2.45m DUCT
LIFT LIFT 2.22x 2.22x 2.45m 2.45m CV CV DUCT DUCT
CV DUCT 4.44M
DN DN
UP UP
LIFT LIFT 2.22x 2.22x 2.45m 2.45m
LIFT
UP LIFT 2.22x CV CV 2.22x 2.45m DUCT DUCT 2.45m
LIFT CV LIFT CV 2.22x 2.22x 2.45m DUCT 2.45m DUCT CV CV DUCT CV CV CV DUCT CV DUCT DUCT DUCT DUCT 4.50M DRIVE WAY 4.50M DRIVE WAY 4.50M DRIVE WAY 4.50M DRIVE WAY 4.50M DRIVE WAY 4.50M DRIVE WAY 4.50M DRIVE WAY
DN UP DN UP CV CV
DUCT LIFT DUCT LIFT 2.22x 2.22x 2.45m 2.45m
181.57M
DN UP DN UP
191.73M
CV CV DUCT DUCT
CV CV DUCT DUCT
DN DN
UP UP
LIFT LIFT 2.22x 2.22x 4.50M DRIVE WAY 2.45m 2.45m
LIFT LIFT 2.22x 2.22x 2.45m 2.45m
CV CV DUCT DUCT UP CV CV CV CV DUCT CV DUCT DUCT DUCT CV DUCT DUCT UP DN DN
LIFT CV LIFT CV 2.22x 2.22x 2.45m 2.45m 5.40m UP DUCT UP DUCT 5.40m
LIFT LIFT 2.22x 2.22x 2.45m 2.45m 4.50M DRIVE WAY 4.50M DRIVE WAY 4.50M DRIVE WAY 4.50M DRIVE WAY 4.50M DRIVE WAY 4.50M DRIVE WAY
CV CV
DUCT LIFT DUCT 2.22x LIFT 2.22x 2.45m 2.45m slope 8 1: CELLAR FLOOR RAMP TO DOWN CELLAR FLOOR RAMP TO DOWN slope 8 1:
DN UP CV CV DN UP DUCT DUCT DN DN
LIFT CV LIFT CV 2.22x 2.22x DRIVE WAY 2.45m DUCT 2.45m DUCT DRIVE WAY CV CV DUCT DUCT
DN UP DN UP
3.0M
TWO WHEELER PARKING 5.51m
PROPERTY LINE RETAINING WALL
15.74M 34.36M
18.99M
38.12M
4.78m
72.35M
(SCALE 1: 200)
2 - 6 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
2.2.1.1 Storm water drains: Conservation of water resource is most important aspect of the project during construction and occupation phases. Storm water drainage planning, domestic water planning and sewerage transfer and sewage treatment planning are most essential. The percolation pit is presented in fig 2.4.
Storm water sumps will be provided to meet the expected increase in the runoff during rainy seasons due to the impervious nature of the Roof, roads and other paved areas. Storm water drainage system shall be provided to collect both the roof water and surface water generated within the project site. All roof water from terraces of all blocks shall be collected by means of rainwater down take pipes.
Calculation for Storm Water Drain Quantity of storm water (a) With out project Area of Catchment, ‘A’ : 2.8530 Ha Run off Coefficient, ‘C’ : 0.6 Maximum intensity of rainfall, ‘I’ : 40 mm/hr Therefore Q : 0.190 m3/sec
(b) With project : Area for catchment for roof and road : 1.706 Ha
Area of Catchment, ‘A’ : 1.706 Ha Run off Coefficient, ‘C’ : 0.9 Maximum intensity of rainfall, ‘I’ : 40 mm/hr Therefore Q = : 0.171 m3/sec
Area for catchment for open areas : 1.147 Ha Run off Coefficient, ‘C’ : 0.6 Maximum intensity of rainfall, ‘I’ : 40 mm/hr Therefore Q = : 0.076 m3/sec Total Discharge : 0.247 m3/sec But, Discharge, Q = A/V Where, A= Area of the Drain, V= Max. Permissible Velocity : 6 m/sec for concrete drain Area of drain, ‘A’ = Q/V : 0.041 m2 Taking depth of drain as 0.6 m at the starting point : 0.6 Width of drain = Area/depth = : 0.069 m 69 mm Width of the drain is to taken 69 mm and depth varies according to the slope of ground.
2 - 7 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Table 2.3 Storm water Management Vol./hr Vol./hr after Difference Land Area in before development in Remarks Use hectares development C=0.8 Discharges C=0.6 Harvested in sumps Roof with a capacity of 4 X 0.92 294.9 221.2 73.7 3 Area 20 m and used for domestic purpose Road 0.78 251.1 188.3 62.8 18 nos. of RWH pits Area are provided of size Open 1.15 137.6 275.2 -137.6 1.5m X 1.5mX 2.0 m Area TOTAL 2.85 -1.1 * C = 0.3 after development
Fig 2.4 Rain water Harvesting Structure of Size 1.5 m X 1.5 m X 2m
2 - 8 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
2.2.1.2 Water Availability: Water is required for the construction as well as during occupation stage as the same is an important resource. The water requirement during construction is in the order of 50 cum/day with a peak demand of 100 cum/day, and during occupation stage in the order of 580.6 KLD. The water resource available with the Municipal authorities was studied to identify the source and feasibility. The water resource both domestic water and sewage is dealt by the Hyderabad Metropolitan water supply and Sewerage Board (HMWSSB) in the GHMC area. The HMWSSB has been maintaining the water supply resources for Hyderabad along with the treatment of wastewater. The resources available with the HMWSSB are presented in table 2.4.
Table 2.4 Details of present sources of water supply to Hyderabad Impoundment Distance from Installed Source Name River Year Name city km Capacity MGD Osmansagar Musi 1920 Osmansagar 15 27 Himayatsagar ESI 1927 Himayatsagar 9.6 18 Manjira Phase I Manjira 1965 Manjira barrage 58 15 Manjira Phase II Manjira 1981 Manjira barrage 59 30 Manjira Phase III Manjira 1991 Singur Dam 80 37 Manjira Phase IV Manjira 1993 Singur Dam 80 38 Krishna Phase I Krishna 2005 Nagarjuna Sagar 116 90 Krishna Phase II Krishna 2008 Nagarjuna Sagar 116 90 Krishna Phase III Krishna 2015 Nagarjuna Sagar 116 90 Godavari 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 to be operational during 2015 and 2016 respectively. It may also be noted that the dependability of Osman sagar and Himiyath sagar is reduced to approximately 60%. 45 MGD supply is available.
Domestic Water: It is proposed to draw domestic water from the Hyderabad Metropolitan Water Supply and Sewerage Board (HMWSSB) to mitigate the drinking water demand, which has been encouraging bulk consumers. The water shortage if any during summer season will be drawn from ground water sources. During the construction stage, water will be sourced primarily through tankers that would be arranged by the contractor or bulk supplies from HMWS&SB. During the project operational stage the water demand shall be sourced bulk supplies from HMWS&SB. The water requirement of the project during occupation stage is in the order of 580.6 KLD.
The water requirement for the project during the occupation stage is presented in table 2.5. The water savings for the project is presented in table 2.6.
2 - 9 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Table 2.5 Water Requirement of the Project No. of Water Total Water No. of Land Use Persons/ requirement per Requirement Units unit person in l * in KLD Block A to H 720 5 135 486.0 LIG & EWS 90 5 135 60.8 Amenities 1 160 45 7.2 Swimming pool 1 5.0 Visitors 2 15 21.6 TOTAL 580.6 *Water requirement as per NBC
Table 2.6 Water Savings of the Project Treated Effective No. Water No. of water Water Land Use of Requirement/ Persons/unit reuse/day Requirement Units KLD Klpcd in KLD Block A to H 720 5 486.0 162.0 324.0 LIG & EWS 90 5 60.8 20.3 40.5 Amenities 1 160 7.2 3.2 4.0 Swimming pool 5.0 5.0 Visitors 2 21.6 14.4 7.2 TOTAL 580.6 199.9 380.7
Approximately 199.9 Kl/day water will be saved by adopting recycling of treated water in the toilet flush. The effective water consumption is reduced by 199.9 Kl/day and the requirement will be in the order of 380.7 Kl/day due to treated water recycling. The water balance of the project during occupation stage is tabulated in table 2.7.
Table 2.7 Water Balance during occupation stage Input KLD Output KLD Domestic water from Excess treated water will be sent to 380.7 256.8 HMWSSB sewer lines Recycled water 199.9 Recycled water 199.9 Water requirement for green belt during non monsoon 7.8 Losses approx 20% 116.1 Total 580.6 Total 580.6
The water used in the order of 580.6 KL/day would generate 464.4 KL/day of wastewater, which has to be treated for reuse and or disposal.
2 - 10 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Sewage treatment plant based on Fluidized Aerobic Bio Reactor (FAB) technology PROCESS DESCRIPTION: The raw sewage will be collected in a collection sump and pumped to mechanical bar screen chamber for removal of large floating matter followed by grit removal in Grit Chamber. The raw sewage will then be collected in an equalization tank for homogenization of hydraulic load. The tank contents will be kept in suspension by means of course bubble serration through pipe grid. The equalization tank, with air flow indicator for continuous monitoring of air supply to the tank in order to avoid septic conditions, will be covered from top (RCC or FRP) to avoid nuisance. The equalized effluent will then be pumped to two Fluidized Aerobic Bio Reactors (FAB) in series where BOD/COD reduction can be achieved by virtue of aerobic microbial activities. The oxygen required will be supplied through coarse air bubble diffusers. The bio-solids formed in the biological process will be separated in the down stream Tube Settler. The clear supernatant will gravitate to the chlorine contact tank where sodium hypochlorite will be dosed for disinfection of treated water prior to disposal.
The biological sludge generated in the FAB and settled in the tube settlers will be collected in a sludge sump and then pumped to sludge drying bed for de watering. The dried sludge will then be disposed off suitably as manure. The schematics of the process are shown. The two main components of the treatment system viz. The FAB reactor and tube settler are described in the following sections.
Fluidized Aerobic Bio Reactor (FAB) Conventional effluent treatment plants are large sized, power intensive and require a lot of monitoring. Scarcity of open space and rising land a power costs have forced the industries to look our for space saving, compact and efficient treatment options. This has led to the development attached growth processes where the bio mass is retained within the aeration tank obviating the need for recycle. These plants are not only compact but also user friendly. The endeavor to have a continuously operating, no- clogging biofilm reactor with no need for back washing, low head-loss and high specific biofilm surface area culminated in the most advanced technology of aerobic biological fluidized bed treatment where the biofilm (biomass) grows on small carrier elements that move along with the water in the reactor. The movement is normally caused by aeration in the aerobic version of the reactor.
The reactor combines all the advantages and best features of Trickling filters, Rotating biological contractors, activated sludge process and submerged fixed film reactors while eliminating the drawbacks of these systems. The plants are more compact and more energy efficient.
The Fluidized Aerobic Bio Reactor (FAB) consists of a tank in any shape filled up with small carrier elements. The elements are made up of special grade PVC or polypropylene of controlled density (shown in plate). For media of specific gravity 0.92- 0.96 the overall density could be expected to increase up to 9.5% when full of biomass such that they can fluidize using an aeration device. A biofilm develops on the elements, which move along the effluent in the reactor. The movement within the reactor is generated by providing aeration with the help of diffusers placed at the
2 - 11 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement bottom of the reactor. Then thin biofilm on the elements enables the bacteria to act upon the biodegradable matter in the effluent and reduce the BOD/COD content in the presence of oxygen available from the air that is used for fluidization.
Table 2.8 Characteristics of Waste water Parameter Quantity in mg/l PH 6 – 7 Total Suspended Solids 400 – 600 BOD 200 – 300 COD 450 – 500
Design of the unit Basic data Flow : 464 KLD Capacity : 600 m3 Peak factor : 3.5 Peak flow Q peak : 2100 m3/day Influent BOD : 200 mg/lit Influent Suspended Solids : 200 mg/lit Influent COD : 350 mg/lit Effluent BOD : 30 mg/lit Effluent COD : 200 mg/lit Effluent Suspended Solids : 100 mg/lit
1. Bar Screen Chamber Average flow : 0.0069 m3/sec Peak factor : 3.5 Peak flow : 0.025 m3/sec Velocity at peak flow : 0.75 m/Sec Effective area of screen Required At average flow : 0.024 m2 At Peak flow : 0.033 m2 Provide Effective area of screen : 0.033 m2 Considering the bar of dia. 10 mm(w) and clear spacing of 20 mm (b) Overall area required : 0.05 m2 Considering screen depth as : 0.1 m Consider 0.5 m Number of clear spacing : 1.65 Number of bars : 2 Consider 4 Nos. Hence Provide 5 bars Provide a screen of 0.5 m X 0.5 m at an inclination of sin 600. In a screen channel of one meter (1 m) length.
2. Grit Chamber : The flow from the bar screen chamber is let into the Grit Chamber of minimum 2 hours capacity. This tank is provided to even out the flow variation, and to provide a continuous feed into the secondary biological treatment units. Peak flow Q : 0.025 m3/sec
2 - 12 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Providing a flow through velocity of 0.30 m/sec Cross sectional area of Channel (0.025/0.3) : 0.083 m2 Surface area of channel (0.025/0.013) : 1.92 m2 Assuming depth d : 0.2 m Width of channel (0.083/0.2) : 0.415 m (say 0.2m) Length of channel (1. 92/0.415) : 4. 5 m (say 4.5 m) Provide two channels each of 0.2 m wide and 4.5 m long with depth of waste water 0.2 m.
3. Equalization tank: The flow from the bar screen chamber is let into the equalization tank of minimum 2hours capacity. This tank is provided to even out the flow variation, and to provide a continuous feed into the secondary biological treatment units. Average flow : 25 m3/hr Peak factor : 3.5 Peak flow : 87.5 m3/hr Hydraulic retention tank = 2 hrs at Peak flow Hence required volume of the tank : 175 m3 Provide tank of : 175 m3 Capacity Assuming depth : 3 m Area : 525 m2 Assuming length to width ratio (1:1) ; l=b length of the tank : 7.5 m width of the tank : 7.5 m Air required for agitation : 0.01 m3/ m2 min Total air required : 111.6 m3/hr Air blower required : 120 m3/hr @ 3.8 mwc Effluent transfer pump : 26.6 m3/hr @ 8 mwc
4. Fluidized Aerobic Bio Reactor (FAB): The polypropylene media have been provided with a specific surface area of 350 – 520 m2 /m3. This allows micro-organisms to get attached and biomass concentration can be increased to four folds as compared to Activated Sludge Process. This enables to consider higher Organic loading rates.
The micro-organisms attached to media are kept in a fluid state thereby maintaining the CSTR (continuous Stirrer tank reactor) regime as well as two tanks are provided in series making the plug – flow system. This will enhance the efficiencies and have the merits of both CSTR and plug-flow regimes. Organic loading rate : 3.2 kg BOD/ m3 d Organic load : 128 kg/day Volume of the tank : 40 m3 Assume the depth : 5 m No. of tanks in series : 2 Size of the tank : 3.1 m dia. x 5.0 SWD Specific gravity of media : 0.92 to 0.96 Specific surface area of media : 350 – 520 m2 /m3
2 - 13 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Media filling : 30 – 50 % of tank volume Oxygen required : 2 kg / kg BOD Oxygen in air : 23% Specific gravity of air @ 30 deg. : 1.65 Aeration : Coarse bubble Oxygen transfer efficiency : 12% Air required : 331.7 m3/hr Air blower required : 350 m3/hr @ 6.5 m wc
5.Tube settler Surface loading rate : 48 m2 /m3 d Surface area required : 13.33 m2 3.0 m x 6.0 m x 2.7 m SWD With 55 Tank size : deg. hopper bottom Tube Modules : 3.0m x 6.0 m x 0.6 m ht. Tube inclination : 60 deg. Settling area for 60 deg slope : 11 m2 /m3 Cross sectional area of tubes : 120 mm x 44 mm Hexagonal Hydraulic radius : 1/61 cm (1.5 cm) Shape factor : 0.6 – 0.7 for media settleable solids
6. Pre Filtration tank The flow from the each individual settling tank i.e., the supernatant liquid is let into the respective Pre-Filtration Tank, which has a minimum 1.5 hours holding capacity. This tank is provided to hold the treated effluent and give an even flow to the pressure sand filter. Average flow : 25 m3/hr Peak factor : 2 m3/hr Peak flow : 50 m3/hr Provide min 1.5 hours holding capacity. Hence required volume of the tank : 75 m3
7. Pressure Sand Filter: Vertical down flow type with graded/sand bed under drain plate with polysterene strains. Flow : 600.0 m3/day Rate of filtration assumed as : 15 m3/m2/hr Requirement of treated water for usage in 20 hrs : 30 m3/hr Dia. of filter of 1 nos. : 1596.1 mm Provide pressure sand filter of 1600 mm dia. and 2000 mm HOS with sand as media layer, under drain pipe, laterals face piping etc for each stream.
8. Activated Carbon Filter: Vertical down flow type with graded/sand bed under drain plate with polysterene strains. Flow : 600.0 m3/day Rate of filtration assumed as : 15 m3/m2/hr
2 - 14 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Requirement of treated water for usage in 20 hrs : 30 m3/hr Dia of filter of 1 nos. : 1596.1 mm Provide Activated Carbon filter of 1600 mm dia with granular Activated carbon as media and 2000 mm HOS with sand as media layer, under drain pipe, laterals face piping etc for each stream.
9.Ultraviolet Disinfection: UV applied to low turbidity water is a highly effective means of disinfection. UV is not harmful to aquatic organisms in the receiving water. UV light kills viruses, Vegetative- and spore-forming bacteria, algae and yeasts. No chemicals are added to the wastewater to change the pH, conductivity, odor or taste to create possible toxic compounds. UV treatment has a few moving parts to adjust or wear out.
10.Final Treated Water Holding Tank It is always preferred to provide one final holding tank of minimum one day holding capacity, so that the treated effluents can be stored and used back for gardening or other tertiary purposes. Capacity: 600 m3
11. Sludge Filter Press: The biomass in the aeration tank stabilizes BOD in wastewater by consuming the organic matter in the wastewater. The metabolic activity results in growth of the biomass population in the Fluidized Aerobic Bio Reactor (FAB). Sludge holding tank has been provided with filter press for dewatering sludge. The filtrate drains off through the media, which is again let into equalization tank. The dewatered sludge is collected in trays, which can be used as manure in the garden. No. of plates : 24 Size of plates : 600 mm X 600 mm Plate moc (material of construction) : PP (poly propline) Type of operation : Hydraulic Power pack capacity : 2 HP
Characteristics of Treated Waste water Parameter Quantity in mg/l pH 7.3 – 8 Total Suspended Solids 20 BOD 10 COD 50
Disposal of Treated Waste Water: Separate tank is provided to store the treated water; the tank shall be 1 foot below the overhead tank. Separate pipe system is provided to pump the treated water. All the treated water pipelines shall be colored blue. The treated water shall be used for toilet flushing and for green belt development for the greening of site. The unused excess treated wastewater shall be sent to sewer lines.
2 - 15 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Fig. 2.5 Sewage Treatment Flow Diagram
2 - 16 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
2.2.1.3 Solid Waste Municipal Solid Waste Composition In India the biodegradable portion dominates the bulk of Municipal Solid Waste. Generally the biodegradable portion is mainly due to food and yard waste.
Table 2.9 Composition of Municipal Solid Waste Type Composition (%) Solid waste in kg Paper 8 200 Plastics 9 225 Metals 1 25 Glass 1 25 others 4 100 Biodegradable 48 1202 Inerts 25 626 Rags 4 100 Total 100 2505 (Source: NSWAI- National Solid Waste Association of India estimate)
Design Stage The total number of people anticipated to stay in the project is in the range of 5000- 6000. The anticipated solid waste/garbage is in the range of 500 g/head, and the total garbage will be in the order of 2505 kg/day. The responsibility of garbage collection and disposal lies with the municipal authorities, however the project authorities propose to educate the residents to segregate the waste at source before disposal. The biodegradable waste will be stored in green color bins whereas the recyclable and other wastes will be stored in blue colour bins. The green bin to be filled with Biodegradable kitchen waste, while the blue dustbins to be filled with recyclable waste like glass, plastic, paper, etc., The biodegradable waste to be removed every day, while the recyclable waste to be removed once a week. The Solid waste/garbage collected, is sent to segregation point. The table 2.10 presents the anticipated garbage quantity after occupation. The Solid waste management plan shown in Fig 2.6.
Table 2.10 Solid Waste Generation No. of No. of Total No. of Total Solid waste in Land Use Persons/ Units Persons Kgs @ 0.5 kg/head unit Block A to H 720 5 3600 1800 LIG & EWS 90 5 450 225 Amenities 1 160 160 48 Visitors 2 1440 432 TOTAL 2505
2.2.2 CONSTRUCTION STAGE The sequence of construction operations and the approximate time requirement is presented in the following table 2.11. The construction sequence is for the construction
2 - 17 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement project follow the same sequence. The time schedule of the entire project is approximately 24 months. Table 2.11 Construction Sequence S.No Description of work 1 Clearing and Grubbing 2 Leveling by way of cut and fill 3 Foundation Excavation. 4 Foundation PCC & Concrete & Plinth Beam. 5 Column lifting up to GF Roof. 6 1st floor slab reinforcement & shuttering & Concreting. 7 Stair case slab 8 1st floor column lifting up to 1st floor roof. 9 1st floor roof shuttering, reinforcement & concreting. 10 Deshuttering of GF Roof & cleaning. 11 Deshuttering of 1st Roof & cleaning. 12 Brick work in GF floor. 13 Brick work in 1st floor. 14 Staircase up to terrace. 15 Staircase headroom slab. 16 Plumbing works (concealed works). Electrical conduit junction boxes & board fixing. Internal (GF & FF). Plastering works. External (GF & FF). 17 Fixing of door & window frames. 18 Plinth filling & floor PCC. 19 Floor Tiling Works, Bath Room, kitchen & platform works. 20 Staircase stone works. 21 Terrace waterproofing works. 22 Parapet wall in terrace & miscellaneous works. 23 Fixing of door & window shutters. 24 Fixing of sanitary fittings. 25 Electrical wiring & fixtures. 26 Painting works. 27 External development & compound wall.
The clearing and grubbing activity involves clearing of shrubs mainly as the land area is devoid of any trees due to biogenic pressures. The cut and fill operation for the entire area is presented in table 2.12.
Table 2.12 Earth Work Quantities Qty. of fill Qty. of cut Surplus fill Surplus cut S No Area (m3) (m3) (m3) (m3) 1 Site 27389 34236 ------6847
The construction of this magnitude would require huge quantities of construction materials. The material requirement for the project is presented in table 2.13.
2 - 18 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Table 2.13 Material Consumption Total Total Ready Total Total BUA per Total Total Total Reinfor Mix Aggr Bricks Units unit in Cement Sand Water cement Concrete egate (Nos) x (m2) (bags) (m3) (m3) Steel (m3) (m3) 1000 (MT) Total BUA 133235 54627 123909 51962 5729 32243 15455 3064 Total 133235 54627 123909 51962 5729 32243 15455 3064 The lead distance for various construction materials is presented in table 2.14.
Table 2.14 Lead Distance for Construction Materials S.No Material Source Lead Distance (Km) 1 Sand ROBOSAND and or Krishna 5-150 or Godavari river bed areas permitted by Govt. 2 Aggregate Crushers near to the site 10-30 3 Cement Company Dealers 50-100 4 Reinforcement Steel TATA / SAIL godowns 10-50 5 Bricks Local brick kiln 10-30 6 Plumbing Material Local Suppliers 2-7 7 Electrical Material Local Suppliers 2-7 8 Sanitary Material Local suppliers 2-7 9 Paints Local Suppliers 10-25 10 Ready Mix Concrete Local Batching Plants 10-50
2.2.2.1 Water Requirement The water required for this project is in the order of 32243 m3 for the entire project implementation period. The peak demand for water may be 50 m3/day, however typical daily consumption will be in the order of 25 m3/day.
2.2.2.2 Construction Debris The construction debris consists of various types of materials. The construction debris will be in both hazardous and non hazardous categories. The hazardous debris consists of empty containers of adhesives, thinners, paints and petroleum products. These empty containers will be sold to authorized recyclers. The non hazardous wastes contain recyclable debris like iron and other metal, glass, plastics, cartons of paper, wood etc. These wastes will be sent for reuse/recycle. The waste percentage will be in the order of 2%. Construction debris containing bricks, demolished RCC will be used for land filling in the place of sub grade.
2.2.2.3 Paints All the paints used in the premises will be ensured to have an albedo of at least 0.4 to increase the reflectivity and reduce the heat dissipation and heat island effects.
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2.2.2.4 Work Force: The labor/work force requirement is approximately 1000 man-days of various skilled and unskilled employees. Sufficient labor force and skilled employees are available as Hyderabad is a favorite destination of skilled employees and migrating people from the rural areas. The peak labor force requirement will be in the order of 500 people. The water requirement for the labor force will be approximately 20000 lt/day.
2.2.2.5 Material preparation and transport All the construction materials will be drawn from outside. The material will be transported by trucks within the site and 10 tippers will be used for the purpose.
2.2.2.6 Batching Plant The required concrete will be prepared in a batching plant to be located temporarily in the site so as to maintain the quality and reduce the lead distance. The capacity of the batching plant will be 30 m3 to 50 m3/hr. The raw mix design (Cement: sand: coarse aggregates: water: admixture) is stored in electronic panel board and the quantities are weighed automatically as per the design mix. Aggregates in the sizes of 10 mm, 20 mm is stacked in separate bins and these materials are loaded into the hopper by scrapper and load cells. Cement is provided to the mix through silos (40 MT to 20 MT capacity) with the help of screw conveyor. Measured quantity of water and admixture is fed into hopper though load cells. In the hopper coarse aggregates, fine aggregates, cement, water and admixture gets mixed in required quantities by rotary motion of the mixer and after proper mixing it is unloaded into transit mixers at the rate of 0.5 m3/minute. The water consumption for this process is approximately 160 lts/m3 of concrete. The entire operation is closed and there is no scope of fugitive dust as the operation is wet in nature.
2.2.2.7 Stone Crusher The required aggregate will be drawn from with in the site from a temporary stone crusher. The capacity of the stone crusher is 150 tons/hour. The stone crusher will use the rocky boulders removed during the cut operations and used for the production of aggregates of various sizes. The main raw material is boulders obtained from within the site during clearing operations of the land and conveyed by tippers & dumpers to the plant site. All the crushing units are mobile and electrically operated. The boulder is charged into the hopper with help of dumper. The boulders are crushed and screened to required size with help of screens and carried by belt conveyors to the storage yard. The dust and the aggregate of less than 12.5 mm size will be used for road construction and as sub base for flooring purpose instead of sand. All the silos and the conveyor belts will be covered and the transfer points will be provided with water sprinkling. The water requirement for this plant is approximately 5 cum/day.
2.2.3 OCCUPATION PHASE A number of facilities will be provided by M/s RDB Hyd Infrastructure Pvt. Ltd., to the occupants and the facilities are shown in table 2.15.
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Table 2.15 Amenities Proposed Amenity Nos. or description Tot Lots and Greening Area 2950.0 m2 DG Sets 300 kVA x 9 No. Sewage Treatment Plant 1 Garbage segregation point 1
The owners/purchasers will form cooperatives to run the remaining amenities like sewage treatment plant, DG sets. The major requirement of resource is for electricity and water. The electricity will be drawn from TRANSCO. A number of transformers will be provided to reduce voltage fluctuation and to provide quality energy. The power requirement during operation phase is presented in table 2.16.
Table 2.16 Energy Consumption Statement Total Total Connected Connected Total Max No. of Load Load Demand S.No Description Units Load in KW (KW) (kVA) (KVA) 1 Block A to H 720 5 3600.0 4500.0 4500.0 2 LIG & EWS 90 3 270.0 337.5 675.0 2 Street Lights 60 0.04 2.4 3.0 2.4 3 Amenities 633.2 791.5 633.2 4 STP 1 100 100.0 125.0 125.0 4 Lifts 24 15 360.0 450.0 450.0 TOTAL 4965.6 6207.0 6385.6 Maximum demand in kw at 0.6 diversity factor 2979.4 Consumption of power for 8 hours per day 23834.8 Maximum demand in kw at 0.2 diversity factor 993.1 Consumption of power for 16 hours per day 15889.9 Total consumption of power per day 39724.7 KW Total consumption of power per year 145.0 Lakh Units
Table 2.17 Energy Saving by using Solar Water Heater Power Total power No. of S.No Description allocated in required in Units watts / unit (KW) 1 Block A to H 370 2500 925 TOTAL 925 Maximum demand in kw at 1 diversity factor 925 Consumption of power for 2 hours per day 1850 Maximum demand in kw at 0.4 diversity factor 370 Consumption of power for 2 hours per day 740 Total consumption of power per day 2590.0 KW Total consumption of power per year 9.45 Lakh Units
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Table 2.18 Energy saving by using Solar Street Lights Power Total power No. of S.No Description allocated in required in Units watts / unit (KW) 1 Street lights 20 40 0.8 TOTAL 0.8 Maximum demand in kw at 0.6 diversity factor 0.5 Consumption of power for 8 hours per day 4 Maximum demand in kw at full load 1 Consumption of power for 4 hours per day 3 Total consumption of power per day 7.0 KW Total consumption of power per year 0.03 Lakh Units saving with Solar Heater and Street Lighting 9.48 Lakh Units
Table 2.19 Electrical Power savings using CFL for lighting Power Total power Area in S.No Description allocated in required in m2 watts / unit (KW) 1 Residential 60970 10 610 2 Common & Utilities 43410 1.5 65 TOTAL 675 Maximum demand in kw at 0.9 diversity factor 607 Consumption of power for 12 hours per day 7288 Total consumption of power per day 7288.1 KW Total consumption of power per year 26.60 Lakh Units Savings in power using CFL 7.98 Lakh Units
Table 2.20 Savings in Electrical Power Consumption – SUMMARY With Solar Total With S.No Description Heater and Consumption Total Saving CFL Street Lighting lakh units Savings in lakh 1 7.98 9.48 17.46 kwh units 145.00 Savings in 2 5.50 6.54 12.0 percentage (%)
2.2.3.1 Domestic Water The domestic water will be drawn from HMWSSB and during non-availability Ground water will be drawn and used to augment the supplies. The wastewater will be treated and reused for gardening and flushing. The line providing treated water will be colored blue and ensured that the tank is at least 1 foot below the level of other tanks and a distance of minimum 2 feet from the other water pipelines.
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2.2.3.2 Solid Waste The solid wastes anticipated during occupation stage include garbage, sludge from STP, hazardous waste of used oils, and batteries from generators. The quantity of wastes is presented in table 2.21.
Table 2.21 Solid Waste Generated during Occupation Phase Type of S.No. Quantity Collection/storage Disposal Waste Segregation at source into bio-degradable, non bio- degradable and Domestic Hazardous wastes. Disposal 2505 of recyclable waste to Municipal solid 1 Garbage kg/day Authorized Waste Pickers / waste disposal Authorized Recyclers. Balance segregated waste given to Authorized Agency of Local Body. Sewage Used as manure 30 2 Treatment Stored in HDPE bags. and or given to kg/day Plant Sludge farmers. Sent to Authorized Used 7 nos. 3 recyclers or Batteries year returned to seller Used 115 Sold to authorized 4 Stored in HDPE Carbouy Lubricant l/year recyclers Sold to TRANSCO Transformer 140 5 Stored in HDPE Drum authorized Oil l/year contractors
2 - 23 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
5.0 ENVIRONMENT MANAGEMENT PLAN
M/s RDB Hyd Infrastructure Pvt. Ltd., proposes to construct a Residential Apartments project at Madeenaguda, Serilingampally Mandal , Ranaga Reddy District. The area around the village has a number of educational institutions and residential development. The project is envisaged as a residential housing with environment friendly features to cater to the growing market demand for quality housing. The demand for quality housing from this area will be partially met from this project, apart from the demand due to industrial nature of the surrounding areas. The village has a number of layouts and rapidly turning into a residential zone for various types of socio economic sectors.
5.1 PROJECT DETAILS The project will be spread over an area of 2.853 hectares of land for residential purpose with necessary amenities in Survey nos. 202/AA and 202/1/AA, Madeenaguda, Serilingampally Mandal , Ranaga Reddy District. The project site is surrounded by open lands in north and east directions. A existing 18 m wide road in south direction connecting Miyapur-Nizampet road. The nearest railway station is Hafeezpet railway station at a distance of 3.2 km.
It is proposed to provide residential units of 810 nos. The land allocation will be optimized to ensure compliance with the regulations of GHMC. The water requirement of the project during operation will be drawn from HMWSSB. Sewage treatment plant will be provided to treat the sewage/wastewater. Water conservation measures will be incorporated in the plumbing designs. Water recycling/reuse will be adopted by way of using treated sewage for green belt development and for flushing. The rainwater will be let-out into the storm water drain and discharged into side drains of road. The required power will be drawn from the TRANSCO and providing open space between each house to allow sunlight will optimize the energy requirement. Solar Energy will be used for fencing. The designs of the houses will also incorporate Indian Architectural principles of “Vastu”, as the market demands the same. Construction material will be drawn from local sources. The parking provision follows the guidelines prescribed by GHMC and Building policy.
5.2 MAJOR FINDINGS OF THE EIS An EIA was conducted and the major findings of the EIS study are presented below;
5.3 ENVIRONMENTAL IMPACTS Impact on Physical Resources Construction of proposed project requires huge quantities of natural resources like sand, sub grade and aggregate, and materials produced from natural resources like bricks, cement and steel. The material shall be drawn from local sources, and the lead distances range from 5 – 150 km. The impacts on physical resources of sand will be irreversible. While bricks will be brought from kilns which use Coal ash. The material requirement of steel, cement etc. will be purchased from manufacturers with in state. Hence, no major impacts on physical resources as regards the availability and procurement of construction material are anticipated due to the project.
5 - 1 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Impacts on Air Quality Impacts on air quality during construction stage are likely to be due to operation of construction yards, material transport on trucks and fugitive emissions from the construction sites. The model results for occupation stage show slight increase in the air quality and in worst concentrations are falling within the site, and the results are with in the prescribed limits.
Impacts on Noise Quality Impacts on noise quality during construction stage will be significant. Hence the construction near the habitation is proposed only during daytime. The impacts during occupation stage will be on the plots adjacent to the road. Construction workers will be provided with protection equipment to guard against the noise impacts. Noise mitigating measures will be suggested for construction equipment and DG sets.
Impact on Flora The project site and its surroundings do not form a habitat to any endangered flora. There are very few trees within the project site due to anthropogenic pressures. The project will enhance the aesthetics of the site due to the provision of avenue plantation and central greening. This would ensure minimum impact on flora.
Impact on Fauna As there are no endangered species of wild life in and around the project site, it is likely to have minimal impact. The avifauna will find abode on the trees proposed to be planted. This would enhance the aesthetics of the area. Pet animal faeces may lead to pollution of water shed if allowed to join storm water drains.
Impact on Land use There is no land acquisition for this project. The land use of the site fallow land and classified as residential by GHMC. However the topography of the land being rocky plains involves cut and fill operations. Erosion and sedimentation are impacts anticipated during construction. Mitigation measures shall be adopted to avoid the same. 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 the negative impacts will be pressure on the infrastructure facilities.
Impact on Surface Water Resources The degradation of water quality can occur during construction phase from increased sediment load into watercourses near the construction site. Suitable mitigation measures proposed, as part of the EMP will ensure that the residual impacts are minimal. Storm water runoff would increase due to the increase in impervious surface, and rainwater-harvesting structures will be provided as mitigation measure. The design of the storm water drain will consider the additional runoff. The urban storm water joining the storm water drain may carry pollutants from imperious surface.
Impact on Ground Water Resources Ground water shall be drawn during construction, and will be used to augment the municipal supply during non-monsoon season if necessary. Exploitation of ground water will have an impact and the same shall be restricted to ensure resource 5 - 2 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement conservation. This impact will be marginal, as the ground water will not be drawn continuously.
Impact on Human Use Values The dominant land use in the area is residential, and expected commercial space will increase the pressure on the residential localities. There is no additional requirement and or acquisition of land. The project authorities will provide road safety measures to reduce risk of accidents in the internal roads. The impact on Human use values is marginal.
5.4 ENVIRONMENTAL MANAGEMENT MEASURES PROPOSED A description of the various management measures during the various stages of the project is provided in the following sections.
5.4.1 Pre-construction stage During the design and preconstruction stage the management proposes to comply with the regulations of town planning, explore the availability of sufficient resources, provide plantation and sink bore wells after obtaining the necessary permissions, obtain all necessary permissions from various statutory authorities after obtaining the relevant permissions.
5.4.2 Construction stage This will be the most crucial and active stage for the Environment Management Plan. In addition to the monitoring of the construction activity itself to the pollution levels within permissible limits, mitigation and enhancement measures for water resources will go on simultaneously as the construction progresses. To facilitate implementation of the enhancement and mitigation measures suggested, working drawings of the same would be prepared after completion of detailed project report. In addition, the need for a balanced evaluation and planning for risks associated with construction activities related to housing project will be part of the supervising Contractors responsibility. The resource conservation by way of identification of materials and construction debris recycle/disposal will be formulated by the supervising consultants. The responsibility of environment management plan lies with the project authorities who would implement the plan in consultation with other consultants, by including appropriate provisions in the contract/sub contract documents and providing the necessary facilities.
5.4.3 Operation stage The environment management plan will be implemented by owners associations/societies, where project authorities are co opted as members, and while the management plan related to the utilities like roads, street lighting and common open spaces lies with the Municipality. The management in operation stage will essentially entail maintenance of sewage treatment plant, maintenance of utilities, and monitoring activity in the project site. Monitoring for pollutants specified in the Monitoring Plan will serve the two purposes. In addition to checking the efficiency of the protection/mitigation/enhancement measures implemented, this will help verify or refute the predictions made as a part of the impact assessment. Thus, it will complete a very important feedback loop for the housing project.
5 - 3 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
The measures adopted and/or to be adopted during different stages of the project have been detailed in table 5.1.
Table 5.1 Environmental Management Plan and Action Plan Environmental Issues/ Enhancement/ Mitigation Management Action Impacts Measures PRE-CONSTRUCTION PHASE The layout design shall be on Following the FSI prescribed Consultants for various the basis of town planning and or reducing the FSI. activities are identified and rules of GHMC/GHMC. Provision of additional mandate given to identify parking environmentally sound Enhancement of open space practices and resource area into a park. conservation measures. Provision of avenue plantation. Provision of storm water drains, for infiltration, filtration, and flow dissipation and sediment control. Provision for disposal of storm water and treated wastewater.
CONSTRUCTION PHASE Dust generation due to Roads in the construction Plantation to be ensured construction activities. area will be sprinkled with Horticulturists to identify water to reduce the raising of the species. dust. Supervising consultants/ Plantation taken up at initial contractor to ensure the stage. water sprinkling
Exhaust gases from heavy Vehicle and equipment Contractors to be machinery and transportation maintenance. educated and supervising of materials PUC for all transport vehicles. consultant to ensure the Avoidance of idling of same. equipment.
Sedimentation of storm water Avoiding stockpiles of Architects, in consultation during rainy season materials near natural drains. with Supervision Provision of filter fence consultants should identify Provision of storm water the measures needed. drains wherever possible before the beginning of construction.
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Environmental Issues/ Enhancement/ Mitigation Management Action Impacts Measures Sewage transfer Lead bearing piping to be Project authorities and avoided plumbing consultant in coordination with the Supervision consultant should implement the same. Sewage Treatment Sewage to be treated in the STP shall be provided by STP and reused/disposed. the project authorities and ensured that the design of STP is optimised to meet the prescribed standards with energy efficiency. Alteration of Drainage Storm water drains to Architects in consultation follow the natural course as with sanitary engineering far as possible. consultants. Storm water drains to have a Supervision consultant to minimum water velocity of 1 ensure the same. m/s and a maximum 3 m/s. Minimum width of 0.6 meters and depth based on the gradient. Provision of rainwater harvesting structures. Ground water drawl Water conservation Sub contractors to be measures during educated on water construction. conservation measures. Loss of productive soil The site area is rocky. Supervision consultant to Topsoil to be stock piled ensure the same in separately with 1:2 slope and consultation with reused for greening purpose. horticulturist and architect. Soil Erosion Cut and fill operation to be Supervision consultant to done during non-monsoon ensure the same in season. consultation with project Silt fence to ensure silt does authorities. not enter storm water drains. Side slopes will be kept flatter wherever possible, and in case of steeper slopes it is mulched. Compaction of Soil Movement of construction Architects to identify the vehicles preferably in the road areas. proposed road areas.
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Environmental Issues/ Enhancement/ Mitigation Management Action Impacts Measures Heavy vehicle movement restricted in central green area. Ploughing the area after construction. Contamination of Soil Vehicle washing and Subcontractors and machinery washing to be Project authorities should avoided in site. ensure. Parking of vehicles and Designate the parking maintenance of vehicles to areas be avoided in site. Provision of Garbage bin Disposal of solid wastes by by project authorities and construction camps to be arrangements to be for made in garbage bins only. disposal of the same. Accidental Leakage and spillage of fuels and other construction materials to be controlled by providing road signs and covered trucks. Natural Resource Identify sand availability The design team in consumption from government authorised consultation with project locations. authorities and supervision Identify and use bricks from consultants must identify coal ash users. the suppliers. Aggregate to be made from the excess materials of cut operations. Identify and use recycled steel where ever possible. Proper availability of drinking water and sanitation facilities. Damage to services running Relocation of any potentially Potentially affected parallel or across the site affected services prior to services identified in during construction leading to commencement of any design stage. interruption in supply construction works Service undertakers to be Contractors to be responsible notified for relocation and for identifying and necessary programming to safeguarding services avoid construction delays adjacent to works and for (incl. payments). compensating statutory Relocation works to be undertakers for any completed by statutory accidental damage to such undertakers before
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Environmental Issues/ Enhancement/ Mitigation Management Action Impacts Measures services. construction works precede in accordance with an agreed programme. Inclusion of appropriate clauses in construction contracts; monitoring of compliance during construction and proper administration of con- tracts. Noise Pollution from heavy Noise causing activities near Inclusion of appropriate machinery, and residential areas to be clauses in construction transportation. conducted during daytime. contracts; monitoring of Maintenance of equipment compliance during and vehicles to mitigate noise construction and proper generation. administration of contracts. Pressures on Infrastructure Identification of alternative Transporting the materials routes for transport of during night time. materials from outside the Consultation with site preferably using inner TRANSCO by project ring road. authorities. Transport of materials during non-peak hours. Installing Electrical Transformer if necessary based on TRANSCO advise to avoid power fluctuations in the site and also the neighbouring residential areas.
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Environmental Issues/ Enhancement/ Mitigation Management Action Impacts Measures Construction debris Construction debris to be Provision of waste disposal used for aggregate and or site for waste from sub grade purpose in the construction and storage case of RCC. yard. Recyclable metals to be Supervision consultant in collected and sold to consultation with the sub recyclers. contractors. Avoidance of excess Inclusion of appropriate inventory of materials. clauses in construction Packing materials to be sent contracts; monitoring of for reuse/recycling. compliance during Hazardous waste containers construction and proper to be returned to administration of con- seller/authorised recyclers. tracts. Plantation and Environmental Soil reclamation Horticulture consultant greening. Use of top soil shall prepare the plan for Initiation of plantation soil reclamation and use of top soils in consultation with architects and supervision consultants. Social Impacts Additional employment to Qualified locals to be locals. chosen for employment. Occupational Safety and Construction workers are Ensure adequacy and Health provided with personal availability of Personal protective equipment (PPE) protective equipments. such as earplugs, helmets, Project authorities to safety shoes, gloves, etc. ensure compliance with Follow the relevant statutory statutory requirements. guidelines Comply with Building Project authorities to construction acts. fence the boundaries to The premises shall be fenced avoid unauthorised and no trespassing be allowed. trespassing. OCCUPATION STAGE Urban Heat Island Effect Cool roof Cool roof with light shades Green roof having low albedo values Vegetation to be provided. Cool Pavements Vegetation to be provided by horticulturist for the avenues, and central green Pavements will be made impervious for footpaths and jogging paths by provision of pavers.
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Environmental Issues/ Enhancement/ Mitigation Management Action Impacts Measures Pervious roads using pavers on compacted soils. Dust Generation from traffic. Avenue plantation. Horticulturist should Maintenance of roads by ensure avenue plantation way of sweeping. The managing committees should ensure maintenance of avenue plantation. Local Municipality authorities should ensure the road maintenance. Generation of Exhaust gases Avenue plantation. To be maintained by the from transport and utilities. Rule to allow only vehicles cooperative society with PUC. To be implemented by the Proper maintenance of cooperative society. vehicles. To be maintained by Stack heights of the DG sets individual owners. must be provided as per Project authorities must CPCB guidelines and the ensure that the DG sets emission levels should meet are provided with acoustic the CPCB standards. enclosures and proper stack heights. Sewage Management All Sewage will be A Co-operative society collected by underground (society) of owners will drainage system. maintain the STP, and The sewage will be treated sewerage. in sewage treatment plant Local body authorities will The treated sewage is be appraised during rainy reused for on land irrigation season when excess for the development of green quantities are released belt. into the drain. Excess sewage will be let out Treated water lines will be into drains colored blue and a distance of 2 feet will be maintained from the other lines by the project authorities. Records of influent and treated effluent quality and quantity should be maintained by the society, and the treatment must be ensured to meet the standards prescribed by 5 - 9 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Environmental Issues/ Enhancement/ Mitigation Management Action Impacts Measures GSR 422 E. Storm water Management Storm water will be disposed Storm water drain system into storm water drain and disposal point to be provided by local authorities. provided by the project Storm water drains will be authorities. maintained periodically Rain water-harvesting before monsoon. structures to be provided Accidental discharges by project authorities. spillages will not be allowed Maintenance of storm to join storm water drains. water drains by Local body Roads, pavements and other authorities and the society surfaces are swept regularly. of residents shall oversee Rainwater harvesting the same. structures will be connected Sweeping by municipal to all residential areas and authorities to be maintained periodically to supervised by the society. remove sediment. Pet owners/all residents Washings of the front informed about pet refuse portions and porticos should disposal. Society to ensure be avoided as it may join the the same. drain and sweeping should be preferred. Ground water usage Ground water sources to be Ground water to be used used during non availability sparingly and water of sufficient supplies from conservation measures to HMWSSB. be adopted, society shall Occupants not allowed to educate and implement sink bore wells. among residents. Water Conservation Measures Water conservation measures Society to educate the to be adopted to reduce residents and provide a resource consumption. book let of measures to reduce water consumption. Loss of productive soil Plot owners to be educated Society to educate the about importance greening to residents. avoid loss of productive soil. Solid Wastes Solid waste/garbage to be The project authorities to collected in green and blue make arrangements with dustbins. The green bin to be the Local authority. filled with Biodegradable The society shall educate kitchen waste, while the blue the segregation of wastes dustbin to be filled with The society shall ensure recyclable waste like glass, the transfer of wastes to plastic, papers etc. the segregation point. The biodegradable wastes to 5 - 10 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Environmental Issues/ Enhancement/ Mitigation Management Action Impacts Measures be removed everyday while Society shall interact with the recyclable wastes to be the local body and removed once a week from implement the each residence. management plan updated The dustbins along the if any. streets to be emptied once a The project authorities day by the society and or its must identify the users for representative NGO. STP sludge and authorised Solid waste/garbage to be recyclers for hazardous picked by society or its wastes and inform the representative NGO. society for Transporting the garbage to implementation. segregation point by NGO. Local body authorities shall transport the wastes to dump yard at other designated location. The sludge from the STP’s may be used as manure for greening program is disposed to farmers. The used oils and used batteries, and used transformer oils should be sent to authorised recyclers. Consumption of natural The major natural resource Consumption of natural resource consumed during occupation resources shall be stage is ground water during optimised by education in sufficient availability of and conservation water from HMWSSB. measures by the Society. Noise Levels Noise levels due to traffic The project authorities and other livelihood activity shall ensure that the will increase in the area and material of construction the mitigation measures of shall use best sound construction and Greening transmission class will reduce the same. materials to ensure that Noise levels from DG sets to the sound levels with in be mitigated by the provision the residence are within of acoustic enclosures. the prescribed limits for Noise levels during festivals residential areas. and other community Avenue plantation should functions. be completed before the occupation stage to ensure that the noise levels are
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Environmental Issues/ Enhancement/ Mitigation Management Action Impacts Measures mitigated. The project authorities must ensure the provision of acoustic enclosures to the DG sets. The society must ensure that the noise from public address systems if any during festivals should follow the guidelines of police and local body. Society must educate the residents about the noise level mitigation measures suggested by various agencies during festivals. Flora The impacts on flora are due The Project authorities to to air pollution from exhaust ensure greening the central of vehicles to be mitigated by open space and avenue the choice of species. plantation. The flora of the site shall Horticulturists to assist the increase with the greening residents in identifying the program in the central green plant species with an area/totlots and other open objective of reducing the spaces. energy costs and mitigating The impacts on the the urban heat island effect. surrounding area fauna will be The society should minimal and yet the residents participate in urban to participate actively in greening programs of community greening of the GHMC and Municipality surroundings. actively. Fauna/pets Pet refuse should be removed The society must educate and dumped in the dustbins the residents and ensure only and should not be the same. allowed into storm water drains. Energy Conservation The white goods used by the The project authorities shall residents should have install CFLs in all common optimum energy consumption. areas and green areas. Usage of Compact fluorescent The society shall collect and lamps in common areas, park disseminate information areas and in the residences. regarding the household white goods and their energy efficiency.
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5.5 IMPLEMENTATION ARRANGEMENTS The responsibility of implementing the mitigation measures lies with project authority during design and construction stages while the responsibility lies with the M/s RDB Hyd Infrastructure Pvt. Ltd., Management and Municipality during occupation stage. All construction activities taken up by the project authorities will be supervised by the Supervision Consultant (SC). Implementation schedule will be worked for phase wise implementation of the mitigation measures after completion of detailed designs. In the pre-construction phase of the project the supervision consultants shall review the EMP to identify environmental 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 completion of detailed designs.
5.6 INSTITUTIONAL STRENGTHENING The management of M/s RDB Hyd Infrastructure Pvt. Ltd., will evaluate the organizational structure with respect to inadequacies in implementing the environment management plans. The housing project is typical as the responsibility of management lies with the owners/residents during occupation stage. The owners form a cooperative society/association to manage the utilities and common areas in a normal case. The common areas, electrical supply, street lighting, open space of central green will be taken over and managed by the local body and TRANSCO. The role of residents is limited to being stakeholders with little say in the day-to-day matters; this issue must be addressed by the town planning agencies and the government.
The Environment Management Plan envisages on-site monitoring of construction activities for environmental pollution and will involve collection of samples and their subsequent analysis. For this purpose two chemists would be required especially when the implementation of the two phases goes on simultaneously. Induction of two more assistant engineers, one each for the biophysical and social environment will also be necessary.
5.7 TRAINING The existing supervising staff and the additional staff have to be trained to effectively carry out. Co-ordinate, with supervision consultants and contractors on compliance monitoring 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.
5.8 ENVIRONMENTAL MONITORING 5.8.1 Introduction The environmental monitoring programme provides such information on which management decision may be taken during construction and occupation phases. It provides basis for evaluating the efficiency of mitigation and enhancement measures and suggest further actions that need to be taken to achieve the desired effect.
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The monitoring includes: (i) Visual observations; (ii) Selection of environmental parameters at specific locations; (iii) Sampling and regular testing of these parameters.
5.8.2 Objectives The 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.
5.8.3 Methodology Monitoring methodology covers the following key aspects: Components to be monitored; Parameters for monitoring of the above components; Monitoring frequency; Monitoring standards; Responsibilities for monitoring; Direct responsibility, Overall responsibility; Monitoring costs.
Environmental monitoring of the parameters involved and the threshold limits specified are discussed below.
5.8.4 Ambient Air Quality (AAQ) Monitoring Ambient air quality parameters recommended for road transportation developments are Respirable Particulate Matter (RPM), Suspended Particulate Matter (SPM), Oxides of Nitrogen (NOX), Sulphur Dioxide (SO2) and Lead (Pb). These are to be monitored at designated locations starting from the commencement of construction activity. Data should be generated over three days at all identified locations in accordance to the National Ambient Air Quality Standards (Table 5.2) location, duration and the pollution parameters to be monitored and the responsible institutional arrangements are detailed out in the Environmental Monitoring Plan.
5 - 14 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Table 5.2 National Ambient Air Quality Standards S. No Pollutant Time Concentration in Ambient Air Weighted Industrial, Ecological Methods of Average Residential Sensitive Area Measurement , Rural and (Notified by Other Area Central Government) (1) (2) (3) (4) (5) (6) 1 Sulphur Dioxide Annual* 50 20 - Improved west 3 (SO2), µg/m and Gaeke 24 80 80 - Ultraviolet Hours** fluorescence 2 Nitrogen Dioxide Annual* 40 30 - Modified Jacob 3 (NO2), µg/m & Hochheiser 24 80 80 (Nn-Arsenite) Hours** - Chemiluminesc ence 3 Particulate Annual* 60 60 - Gravimetic Matter (Size Less - TOEM than 10 µm) or 24 100 100 - Beta 3 Attenuation PM10 µg/m Hours** 4 Particulate Annual* 40 40 - Gravimetic Matter (Size Less - TOEM than 2.5µm) or 24 60 60 - Beta 3 Attenuation PM2.5 µg/m Hours** 5 Ozone (O3) 8 100 100 - UV Photometric µg/m3 hours** - Chemilminesce 180 180 nce 1 hour** - Chemical Method 6 Lead (Pb) µg/m3 Annual* 0.50 0.50 - AAS /ICP method after 24 1.0 1.0 sampling on hours** EPM 2000 or equivalent filter paper - ED-XRF using Teflon filter 7 Carbon 8 02 02 - Non Dispersive Monoxide (CO) hours** Infra Red (NDIR) mg/m3 04 04 - Spectroscopy 1 hour** 8 Ammonia (NH3) Annual* 100 100 - Chemilminesce µg/m3 24 400 400 nce hours** - Indophenol blue method - Gas Benzene (C6H6) 9 3 Annual* 05 05 Chromotograph µg/m y based
5 - 15 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
S. No Pollutant Time Concentration in Ambient Air Weighted Industrial, Ecological Methods of Average Residential Sensitive Area Measurement , Rural and (Notified by Other Area Central Government) continuous analyzer - Absorption and Desorption followed by GC analysis 10 Benzo(o)Pyrene( Annual* 01 01 - Solvent BaP) – extraction Particulate followed by Phase only, HPLC/GC ng/m3 analysis 11 Arsenic (As), Annual* 06 06 - AAS/ICP ng/m3 method after sampling on EPM 2000 or equivalent filter paper 12 Nickel (Ni), Annual* 20 20 - AAS/ICP ng/m3 method after sampling on EPM 2000 or equivalent filter paper G.S.No.826 (E) dated 16th November, 2009. Vide letter no. F. No. Q-15017/43/2007- CPW These rules may be called the Environment (Protection) Seventh amendment rules, 2009.
*Annual Arithmetic mean of minimum 104 measurements in a year at a particular site taken twice a week 24 hourly at uniform interval.
**24 hourly/8 hourly or 1 hour monitored values as applicable, shall be compiled with 98 percent of the time in a year, 2% of the time they may exceed the limits but not on two consecutive days of monitoring
5.8.5 Water Quality Monitoring The physical and chemical parameters recommended for analysis of water quality relevant to road development projects are pH, total solids, total dissolved solids, total suspended solids, oil and grease, COD, chloride, lead, zinc and cadmium. The location, duration and the pollution parameters to be monitored and the responsible institutional arrangements are detailed in the Environmental Monitoring Plan. The monitoring of the water quality is to be carried out at all identified locations in accordance to the Indian Standard Drinking Water Specification – IS 10500: 1991 (stated in table 5.3)
5 - 16 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Table 5.3 Indian Standard Drinking Water Specifications – IS: 10500:1991 S. No Substance or Require Undesirable Effect Methods Remarks Characteristics ment Outside the of Test (Desirabl Desirable Limit (Ref. To Source Alternate Absence ofAbsence Limit in the Limit e Limit) Permissible IS) ESSENTIAL CHARACTERISTICS 1 Colour, Hazen 5 Above 5, consumer 25 3025 (Part Extended to units, Max. acceptance 4) 25 only if decreases 1983 toxic substances are not suspected, in absence of alternate sources 2 Odour Unobjec - - 3025 (Parts a) Test cold tionable 5):1984 and when heated b) Test at several dilutions 3 Taste Agreeabl - - 3025 (Part Test to be e 7 and 8) conducted 1984 only after safety has been established 4 Turbidity 5 Above 5, consumer 10 3025 (Part - NTU, Max. acceptance 10) decreases 1984 5 pH Value 6.5 to Beyond this range, No 3025 (Part - 8.5 the water will relaxatio 11) affect the mucous n 1984 membrane and/or water supply system 6 Total 300 Encrustation in 600 3025 (Part - hardness (as water supply 21) CaCO3) mg/l, structure and 1983 Max adverse effects on domestic use 7 Iron (as Fe) 0.3 Beyond this limit 1 32 of 3025 : - mg/l, Max taste/appearance 1964 are affected, has adverse effect on domestic uses and
5 - 17 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
S. No Substance or Require Undesirable Effect Methods Remarks Characteristics ment Outside the of Test (Desirabl Desirable Limit (Ref. To Source Alternate Absence ofAbsence Limit in the Limit e Limit) Permissible IS) water supply struc- tures, and promotes iron bacteria 8 Chlorides (as 250 Beyond this limit, 1000 3025 (Part - CI) mg/l, Max taste, corrosion 32) and palatability are 1988 affected 9 Residual, free 0.2 - - 3025 (Part To be chlorine, 26) applicable mg/l, Min 1986 only when water is chlorinated. Tested at consumer end. When protection against viral infection is required, it should be Min 0.5 mg/l DESIRABLE CHARACTERISTICS 1 Dissolved 500 Beyond this 2000 3025 (Part - solids mg/l, palatability 16) Max decreases and may 1984 cause gastro intestinal irritation 2 Calcium (as 75 Encrustation in 200 3025 (Part - Ca) mg/l, Max water supply 40) structure and 1991 adverse effects on domestic use 3 Magnesium 30 Encrustation to 100 16, 33, 34 - (as Mg), mg/l, water supply of IS 3025: Max structure and 1964 adverse effects on domestic use 4 Copper (as 0.05 Astringent taste, 1.5 36 of 3025: - Cu) mg/l, discoloration and 1964 Max corrosion of pipes, fitting and utensils will be caused
5 - 18 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
S. No Substance or Require Undesirable Effect Methods Remarks Characteristics ment Outside the of Test (Desirabl Desirable Limit (Ref. To Source Alternate Absence ofAbsence Limit in the Limit e Limit) Permissible IS) beyond this 5 Manganese 0.1 Beyond this limit 0.3 35 of 3025: - (as Mn) mg/l, taste/appearance 1964 Max are affected, has adverse effects on domestic uses and water supply structures 6 Sulphate (as 200 Beyond this causes 400 3025 (Part May be 200 SO4) gastro intestinal 24) 1986 extended up mg/l, Max irritation when to 400 magnesium or provided (as sodium are present Mg) does not exceed 30 7 Nitrate (as 45 Beyond this, may 100 3025 (Part - NO2) mg/l, cause 34) 1988 Max methaemoglobine mia 8 Fluoride (as 1 Fluoride may be 1.5 23 of 3025: - F) mg/l, Max kept as low as 1964 possible. High fluoride may cause fluorosis 9 Phenolic 0.001 Beyond this, it may 0.002 54 of 3025: - compounds cause 1964 (As C6H5OH) objectionable taste mg/l, Max and odour 10 Mercury (as 0.001 Beyond this, the No (see Note) To be tested Hg) mg/l, water becomes relaxation Mercury when Max toxic ion pollution is analyser suspected 11 Cadmium (as 0.01 Beyond this, the No (See note) To be tested Cd), mg/l, water becomes relaxation when Max toxic pollution is suspected 12 Selenium (as 0.01 Beyond this, the No 28 of 3025: To be tested Se), mg/l, water becomes relaxation 1964 when Max toxic pollution is suspected 13 Arsenic (As 0.05 Beyond this, the No 3025 (Part To be tested As) mg/l, max water becomes relaxation 37) 1988 when toxic pollution is
5 - 19 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
S. No Substance or Require Undesirable Effect Methods Remarks Characteristics ment Outside the of Test (Desirabl Desirable Limit (Ref. To Source Alternate Absence ofAbsence Limit in the Limit e Limit) Permissible IS) suspected 14 Cyanide (As 0.05 Beyond this limit, No 3025 (Part To be tested CN), mg/l, the water becomes relaxation 27) 1986 when Max toxic pollution is suspected 15 Lead (as Pb), 0.05 Beyond this limit, No (see note) To be tested mg/l, Max the water becomes relaxation when toxic pollution is suspected 16 Zinc (As Zn). 5 Beyond this limit it 15 39 of 3025: To be tested Mg/l, Max can cause 1964) when astringent taste pollution is and an suspected opalescence in water 17 Anionic 0.2 Beyond this limit it 1 Methylene- To be tested detergents can cause a light blue when (As MBAS) froth in water extraction pollution is mg/l, Max method suspected 18 Chromium 0.05 May be No 38 of 3025: To be tested (As Cr6+) carcinogenic above relaxatio 1964 when mg/l, Max this limit n pollution is suspected 19 Poly nuclear - May be - - - aromatic carcinogenic above hydrocarbons this limit (as PAH) g/1, Max 20 Mineral oil 0.01 Beyond this limit 0.03 Gas - mg/l, Max undesirable taste Chromatog and odour after raphic chlorination take method place 21 Pesticides Absent Toxic 0.001 - - mg/l, Max 22 Radioactive materials: 58 of - 3025:01964 23 a) Alpha - - 0.1 - - emitters Bq/l, Max 24 Beta emiters - - 1 - - pci/1, Max
5 - 20 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
S. No Substance or Require Undesirable Effect Methods Remarks Characteristics ment Outside the of Test (Desirabl Desirable Limit (Ref. To Source Alternate Absence ofAbsence Limit in the Limit e Limit) Permissible IS) 25 Aluminium (as 200 Beyond this limit 600 13 of - Al), mg/l, Max taste becomes 3025:1964 unpleasant 26 Aluminium (as 0.03 Cumulative effect 0.2 31 of 3025: - Al), mg/l, Max is reported to 1964 cause dementia 27 Boron, mg/l, 1 - 5 29 of 3025: - Max 1964 Source: Indian Standard Drinking Water Specification-IS10500:1991
5.8.6 Noise Level Monitoring The measurements for monitoring noise levels would be carried out at all designated locations in accordance to the Ambient Noise Standards formulated by Central Pollution Control Board (CPCB) in 1989 (refer) Sound pressure levels would be monitored on twenty-four hour basis. Noise should be recorded at a “A” weighted frequency using a “slow time response mode” of the measuring instrument. The location, duration and the noise pollution parameters to be monitored and the responsible institutional arrangements are detailed in the Environmental Monitoring Plan (Table 5.5)
Table 5.4 Noise level standards (CPCB) Type Noise level for Day Noise level for Time Leq dB(A) Night Time dB(A) Industrial area 75 70 Commercial area 65 55 Residential area 55 45 Silence zone 50 40 Day 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 is presented in the Table 8.5 environmental monitoring plan
5 - 21 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Table 5.5 Environmental Monitoring Plan Institutional MONITORING Responsibilities Paramete Special Standard Freque Implemen Supervisi Location Duration
Environment component Project Stage rs Guidance s ncy tation on SPM, High Air Location Once Continu Contract Environm RSPM, volume (Preven- of every ous 24 or ental Engineer, SO2, sampler tion and constructi season hours/ through GHMC NOX, CO, to be Control on area for 2 or for 1 ts - HC located of Pollu- years full proved 50 m tion) working moni- from the Rules, day toring plant in CPCB, agency the 1994 down- wind direc- Constructionstage tion. Use method specified by CPCB for analysis Air SPM, High Air Location Once Continu Contract Environm RSPM Volume (Preven- of every ous 24 or ental Sampler tion and constructi month hours/ through Engineer, to be Control on area for 2 or for 1 ts - M/s RDB located of Pollu- years full proved Hyd 40 m tion) working moni- Infrastru from the Rules, day toring cture ROW in CPCB, agency Pvt. Ltd., the 1994 down- wind direc- Constructionstage tion. Use method specified by CPCB for analysis
5 - 22 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Institutional MONITORING Responsibilities Paramete Special Standard Freque Implemen Supervisi Location Duration
Environment component Project Stage rs Guidance s ncy tation on SPM, High Air 1. Bachup Thrice Continu Society Society RSPM, Volume (Preven- ally in ous SO2, Sampler tion and occupa 24 hours NOx, CO, to be Control tion Pb, HC located of Pollu- stage. at 15 m tion) Decem from the Rules, ber edge of CPCB, 2017, pave- 1994 Januar Occupationstage ment y 2018 and Januar y 2019 pH, BOD, Grab Water 1. Ambar End of - Contract Environm COD, sample quality Cheruvu sum- or ental TDS, TSS, collected standard mer through Engineer, DO, Oil from s by before ts - M/s RDB & source CPCB the proved Hyd Grease and onset moni- Infrastru and Pb analyse of toring cture as per mon- agency Pvt. Ltd., Standard soon Methods every
WaterQuality for year
Constructionstage Examina for 2 tion of years Water and Wastew ater
5 - 23 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Institutional MONITORING Responsibilities Paramete Special Standard Freque Implemen Supervisi Location Duration
Environment component Project Stage rs Guidance s ncy tation on pH, Grab Water STP End of - M/s M/s RDB BOD,CO sample quality Influent sum- RDB Hyd Hyd D,TDS,TS collected standard STP mer Infrastru Infrastru S, DO, from s by treated before cture cture Pb, Oil source CPCB Effluent the Pvt. Ltd., Pvt. Ltd., and and onset Grease. analyse of as per mon- Standard soon in Methods 2017, for 2018 Examina and tion of 2019
WaterQuality Water Occupationstage and Wastew ater
Daily Society Daily Society
5 - 24 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Institutional MONITORING Responsibilities Paramete Special Standard Freque Implemen Supervisi Location Duration
Environment component Project Stage rs Guidance s ncy tation on Noise Free Noise At Once Readings Contract Environm levels on field at 1 stan- equipmen every to be or ental dB (A) m from dards by t yards month taken at through Engineer, scale the CPCB (max) 15 ts - M/s RDB equipme for two seconds proved Hyd nt years, interval moni- Infrastru whose as for 15 toring cture noise require minutes agency Pvt. Ltd., levels d by every are the hour and being engine then deter- er average mined. d. Noise Equivale Noise As Thrice Readings Contract Environm levels on nt noise stan- directed a year to be or ental Engineer, Noiselevels dB (A) levels dards by by the for 2 taken at through scale using an CPCB Engineer years 15 ts - M/s RDB Constructionstage inte- (At during seconds proved Hyd grated maximum the interval moni- Infrastru noise 5 constr for 15 toring cture level locations) uction minutes agency Pvt. Ltd., meter period. every kept at a hour and distance then of 15 average from the d. internal roads
5 - 25 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Institutional MONITORING Responsibilities Paramete Special Standard Freque Implemen Supervisi Location Duration
Environment component Project Stage rs Guidance s ncy tation on Noise Equivale Noise 1. At all Thrice Readings Society Society levels on nt noise stan- boundari in op- to be through dB (A) levels dards by es of the eration taken at an scale using an CPCB site. period, 15 approve inte- in seconds d grated Decem interval monitori noise ber for 15 ng level 2017, minutes agency meter Januar every kept at a y 2018 hour and
Occupationstage distance and then of 15 Januar average from y 2019. d. edge of paveme nt Monitori Sample Threshol At Once a - Contract Environm ng of Pb, of soil d for productive year or ental Cr, Cd collected each agricultura for 2 through Engineer, to contami- l lands in years an M/s RDB acidified nant set the approve Hyd and by IRIS project d Infrastru analysed database impact monitori cture using of area to be ng Pvt. Ltd.,
Soil absorpti USEPA identified agency on until by the spectrop national environme Constructionstage ho- stan- ntal tometry dards engineer are promulg ated.
5 - 26 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Institutional MONITORING Responsibilities Paramete Special Standard Freque Implemen Supervisi Location Duration
Environment component Project Stage rs Guidance s ncy tation on Monitori Sample Threshol At As per Thrice in Society Society ng of of soil d for accident/ the op- heavy collected each spill occurr eration metals, to contami- locations ence of stage for oil and acidified nant set involving such monitori grease and by IRIS bulk inciden ng analysed database transport ts turbidity using of carrying absorpti USEPA hazardous on until materials
Occupationstage spectrop national (5 ho- stan- locations tometry dards maximum) are promulg ated. Turbidity Visual As At the Pre- Engineer M/s RDB in Storm obser- specified drains monso Hyd water vations by the on and Infrastru during Water post- cture Silt load site visits quality mon- Pvt. Ltd.,
tructionstage in ponds standard soon s season
Cons s for 2 years Turbidity Visual As Thrice Society Society in Storm obser- specified in pre- water vations by the monso
Soil ErosionSoil during Water on and Silt load site visits quality post- in ponds standard monso s on season s in Occupationstage 2017, 2018 and 2019.
5 - 27 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Institutional MONITORING Responsibilities Paramete Special Standard Freque Implemen Supervisi Location Duration
Environment component Project Stage rs Guidance s ncy tation on Monitori Visual To the At Storage Quarte Supervisi M/s RDB ng of: obser- satisfac- area and rly in on Hyd 1. vations tion of con- the Engineer Infrastru Storage will the M/s struction constr /consult cture Area suffice. RDB Hyd camps uction ant Pvt. Ltd., 2. These Infrastru stage. Draina are to be cture ge checked Pvt. Ltd., Arrang as and the specified stan- es and Constructionand es Camps ements in the dards
ConstructionStage 3. EMP. given in Sanitati on in the Constr reportin g form.
ConstructionSit uction Camps
5.9 REPORTING SYSTEM Reporting system provides the necessary feedback for project management to ensure quality of the works and that the program is on schedule. The rationale for a reporting system is based on accountability to ensure that the measures proposed as part of the Environment Management Plan get implemented in the project.
The reporting system will operate linearly with the contractor who is at the lowest rung of the implementation system reporting to the Supervision Consultant, who in turn shall report to the M/s RDB Hyd Infrastructure Pvt. Ltd.,. All reporting by the contractor and Supervision Consultant shall be on a quarterly basis. M/s RDB Hyd Infrastructure Pvt. Ltd., shall be responsible for preparing targets for each of the identified EMAP activities. All subsequent reporting by the contractor shall be monitored as per these targets set by the M/s RDB Hyd Infrastructure Pvt. Ltd., before the contractors move on to the site. The reporting by the Contractor will be a monthly report like report of progress on construction and will form the basis for monitoring by the M/s RDB Hyd Infrastructure Pvt. Ltd., either by its own Environmental Cell or the Environmental 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.
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5.10 ENVIRONMENTAL MANAGEMENT BUDGET The environmental budget for the various environment management measures proposed in the EMP is detailed in Table 8.6 There are several other environmental issues that have been addressed as part of good engineering practices, the costs for which has been accounted for in the Engineering Costs. Moreover, since environmental enhancements have not been finalized at this stage, the table projects the typical costs aspect wise and the detailed cost estimate is presented in Annexure A.
Table 5.6 Environmental Budgets Capital cost in Rs. Lakhs Recurring cost in Rs. Lakhs S. Description NO. Construction Occupation Construction Occupation Phase Phase Phase Phase Air Pollution 1 37.5 -- 0.9 9.9 Control Water Pollution 2 82.8 -- 12.9 60.0 Control Noise Pollution 3 10.6 -- 3.6 2.2 Control Environmental 4 Monitoring & 0.2 12.0 0.3 2.4 Management Green belt & 5 Open area 5.3 1.1 0.3 1.4 development 6 Solid Waste 5.5 0.6 1.3 10.1 7 Others 62.8 -- 1.5 2.2
Total 204.6 13.6 20.8 88.3
5.11 Horticultural and Landscaping Works (a) Scope The Horticultural and Landscaping works may be entrusted to a contractor. It would generate local employment if the plantation, upkeep and maintenance of the green belt were entrusted to local VSS bodies. Detailed drawings and designs of landscaping will be drawn after completion of the detailed designing. The following precautions must be taken while undertaking horticulture and landscaping works. The M/s RDB Hyd Infrastructure Pvt. Ltd.,project will have greenery by way of avenue plantation and central green. The scheme of plantation and the figures are presented in mitigation chapter. The upkeep and the management of the greening are presented as follows:
5 - 29 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement b) Materials Plant Materials Plant 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 or disfigurement.
All plant materials shall be healthy, sound, vigorous, free from plant diseases, insects pests, of their eggs, and shall have healthy, well-developed root systems. All plants shall be hardy under climatic conditions similar to those in the locally of the project. Plants supplied shall to confirm to the names listed on both the plan and the plant list. No plant material will be accepted if branches are damaged or broken. All material must be protected from the sun and weather until planted.
Any nursery stock shall have been inspected and approved by the Environmental Specialist or the Engineer. All plants shall conform to the requirements specified in the plant list. Except that plants larger then specified may be used if approved, but use of such plants shall not increase the contract price. If the use of the larger plant is approved, the spread of roots or 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 top soils of the locality containing 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 any other objectionable extraneous matter or debris. It shall contain no toxic material. No topsoil shall be delivered in a muddy condition. It shall have pH value ranging between 6 and 8.5.
Fertiliser Measurement of sludge shall be in stacks, with 8% reduction for payment. It shall be free from extraneous matter, harmful bacteria insects or chemicals. (Subjected to safety norms).
Root System The root system shall be conducive to successful transplantation. While necessary, the root-ball shall be preserved by support with Hessian or other suitable material. On soils where retention of a good ball is not possible, the roots should be suitably protected in such a way that the roots are not damaged.
Condition Trees and shrubs shall be substantially free from pests and diseases, and shall be materially undamaged. Torn or lacerated roots shall be pruned before dispatch. No roots shall be subjected to adverse conditions such as prolonged exposure to drying winds or subjection to water logging between lifting and delivery.
(c) Supply and Substitution Upon submission of evidence that certain materials including plant materials are not available at time of contract, the contractor shall be permitted to substitute with an 5 - 30 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement equitable adjustment of price. All substitutions shall be of the nearest equivalent species and variety to the original specified and shall be subjected to the approval of the Landscape Architect.
(d) Packaging Packaging shall be adequate for the protection of the plants and such as to avoid heating or drying out.
(e) Marking Each specimen of tree and shrub, or each bundle, shall be legibly labelled with the following particulars: Its name. The name of the supplier, unless otherwise agreed. The date of dispatch from the nursery.
(f) Tree Planting Plants and Shrubs Trees should be supplied with adequate protection as approved. After delivery, if planting is not to be carried out immediately, balled plants should be placed back to back and the ball covered with sand to prevent drying out. Bare rooted plants can be heeled in by placing the roots in prepared trench and covering them with earth, which should be watered into, avoid air pockets round the roots. Trees and shrubs shall be planted as shown in architectural drawings and with approval of site supervision engineer.
Digging of Pits Tree pits shall be dug a minimum of three weeks prior to backfilling. The pits shall be 120 cm in diameter and 120 cm deep. While digging the pits, the topsoil up to a depth of 30 cm may be kept aside, if found good (depending upon site conditions), and mixed with the rest of the soil.
If the side of the below, it shall be replaced with the soil mixture as specified further herein. If the soil is normal it shall be mixed with manure; river sand shall be added to the soil if it is heavy. The bottom of the pit shall be forked to break up the subsoil.
Back Filling The soil back filled watered through and gently pressed down, a day previous to planting, to make sure that it may not further settle down after planting. The soil shall be pressed down firmly by treading it down, leaving a shallow depression all round for watering.
Planting No tree pits shall be dug until final tree position has been pegged out for approval. Care shall be taken that the plant sapling when planted is not be buried deeper than in the nursery, or in the pot. Planting should not be carried out in waterlogged soil. Plant trees at the original soil depth; soil marks on the stem is an indication of this and should be maintained on the finished level, allowing for setting of the soil after planting. All
5 - 31 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement plastic and other imperishable containers should be removed before planting. Any broken 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. Bare roots should be spread evenly in the planting pit; and small mound in the centre of the pits on which the roots are placed will aid on even spread. Soil should be placed around the roots, gently shaking the tree to allow the soil particles to shift into the root system to ensure close contact with all roots and prevent air pockets. Back fill soil should be firmed 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 by volume) 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 of water.
Staking Newly planted trees must be held firmly although not rigidly by staking to prevent a pocket forming around the stem and newly formed fibrous roots being broken by mechanical 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. Suitable for small bare- rooted or Ball material (d) For plant material 3m to 4.5m high with a single stem a three- wire adjustable guy system may be used in exposed situations.
The end of stake should be pointed and the lower 1m to 1.2m should be coated with a non-injurious wood preservative allowing at least 150mm above ground level.
Tying Each 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 and stake. The tree should be secured at a point just below its lowest branch, and also just above ground level; normally two ties should be used for tree. These should be adjusted or replaced to allow for growth.
Watering The Landscape Contractor should allow for the adequate watering in of all newly planted trees and shrubs immediately after planting and he shall during the following growing season, keep the plant material well watered.
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Fertilising Fertilising shall be carried out by application in rotation of the following fertilisers, every 15 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- grown plants is essential.
(g) Shrub Planting In Planter Beds All 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 (8 parts of stacked volume of earth after reduction by 20%: 1 part of stacked volume of sludge after reduction by 8%.)
Tall shrubs may need staking, which shall be provided if approved by the contracting consulting engineer, depending upon the conditions of individual plant specimen. For planting shrubs and ground cover shrubs in planters, good earth shall be mixed with sludge in the proportion as above and filled in planters.
Positions of planters shall be planted should be marked out in accordance with the architectural drawing. When shrubs are set out, precautions should be taken to prevent roots drying. Planting holes 40 cm in diameter, and 40 cm deep should be excavated for longer shrubs. Polythene and other non-perishable containers should be removed and any badly damaged roots carefully pruned. The shrubs should then be set in holes so that 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. The remainder of the soil can then be returned and again firmed by treading.
(h) Grassing Preparation During 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 to the actual sowing. Regular watering shall be continued until sowing by dividing the area into 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 ensured that the soil has completely settled.
Soil The soil itself shall be ensured to the satisfaction of Landscape Architect to be a good fibrous loam, rich in humus.
5 - 33 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Sowing the grass roots Grass 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 water sprayed over the same after keeping the stock in place protected from sun and dry winds. Grass stock received at site may be stored for a maximum of three days. In case grassing for some areas is scheduled for a later date fresh stock of grass roots shall be ordered and obtained.
Execution Small roots shall be dibbled about 5 cm apart into the prepared grounds. Grass will only be accepted as reaching practical completion when germination has proved satisfactory and all weeds have been removed.
Maintenance As soon as the grass is approximately a 3cm high it shall be rolled with a light wooden roller – in fine, dry weather – and when it has grown to 5 to 8 cm, above to ground weeds 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 well broken sludge manure shall be applied when the grass is sufficiently secure in the ground to bear the mowing machine, the blades must be raised an inch above the normal level for the first two or three cuttings. That is to say, the grass should be cut so that 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 days heavily, 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 seeding out of normal season shall be the responsibility of the contractor. Any shrinkage below the specified levels during the contract or defect liability period shall be rectified at the contractor's expense. The Contractor is to exercise care in the use of rotary cultivator and mowing machines to reduce to a minimum the hazards of flying stones and brickbats. All rotary mowing machines are to be fitted with safety guards.
Rolling A light roller shall be used periodically, taking care that the area is not too wet and sodden.
Edging These shall be kept neat and must be cut regularly with the edging shears.
Fertilising The area shall be fed once in a month with liquid manure prepared by dissolving 45gms of ammonium sulphate in 5 litres of water.
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Watering Water shall be applied at least once in three days during dry weather. Watering whenever done should be thorough and should wet the soil at least up to a depth of 20 cm.
Weeding Prior to regular mowing the contractor shall carefully remove rank and unsightly weeds.
Cultivating The Landscape Contractor shall maintain all planted areas within Landscape contract boundaries 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 approved insecticide or fungicide, pruning, and other horticulture operations necessary for proper growth of the plants and for keeping the landscape sub-contract area neat in appearance.
Pruning and Repairs Upon completion of planting work of the landscape sub-contract all trees should be pruned and all injuries repaired where necessary. The amount of pruning shall be limited to the necessary to remove dead or injured twigs and branches and to compensate for the loss of roots and the result of the transplanting operations. Pruning shall be done in such a manner as not to change the natural habit or special shape of trees.
Tree Guards Where the tree guards are necessary, care should be taken to ensure that they do not impede natural movement or restrict growth. Circular iron tree guards shall be provided for 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) 5 Nos. 25x25x3mm angle iron verticals 2.00m long excluding splayed outward at lower end up to an extent of 10 cms. (ii) 3 Nos. 25x25mm MS flat rings fixed as per design (iii) 15 Nos. 1.55 metres long 6mm dia bars. Each ring shall be in two parts in the ratio of 1:2 and their ends shall be turned in radially for a length of 4 cm at which they are bolted together with 8mm dia and 30mm long MS bolts and nuts.
The vertical angle irons shall be welded to rings along the circumference with electric plant 15 Nos. bars shall be welded to rings at equal spacing along the circumference of ring. The lower end of the angle iron verticals shall be splayed outwards up to an extent of 10cm. The lower end of the flat of lower ring shall be at a height of 45cm. and upper end of the flat of top ring shall be at the height of 2.00 metres. The middle ring shall be in the centre of top and lower ring. The bars shall be welded to rings as shown in the drawing. The entire tree guard shall be given two coats of paint of approved brand and of required shade over a priming coat of ready mixed primer of approved brand.
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(i) Nursery Stack Planting should be carried out as soon as possible after reaching the site. Where planting must be a necessity and/or be delayed, care should be taken to protect the plants from pilfering or damage from people animals. Plants with bare-roots should be heeled- in as soon as received or otherwise protected from drying out, and others set closely together and protected from the wind. If planting is to be delayed for more than a week, packaged plants should be unpacked, the bundles opened up and each group of plants heeled in separately and clearly labelled. If for any reason the surface of the roots becomes dry the roots should be thoroughly soaked before planting.
(j) Protective Fencing According to local environment, shrubs shall be protected adequately from vandalism until established.
(k) Completion On completion, the ground shall be formed over and left tidy.
5.12 Water Conservation Measures Water conservation measures must be adopted during the occupation stage that would conserve the natural resource and also reduce the pressure on other users. Typical lists of water conservation measures are presented as follows;
Household Water Saving Measures 1. There are a number of ways to save water and they all start with you. 2. When washing dishes by hand, don't let the water run while rinsing. Fill one sink with wash water and the other with rinse water. 3. Check your sprinkler system frequently and adjust sprinklers so only your lawn is watered and not the house, sidewalk, or street. 4. Run your washing machine and dishwasher only when they are full and you could save 3785 liters a month. 5. Avoid planting turf in areas that are hard to water such as steep inclines and isolated strips along sidewalks and driveways. 6. Install covers on pools and check for leaks around your pumps. 7. Use the garbage disposal less often. 8. Plant during rainy season and or winter when the watering requirements are lower. 9. Check your water meter and bill to track your water usage. 10. Always water during the early morning hours, when temperatures are cooler, to minimize evaporation. 11. Wash your produce in the sink or a pan that is partially filled with water instead of running water from the tap. 12. Use a layer of organic mulch around plants to reduce evaporation and save hundreds of liters of water a year. 13. Use a broom instead of a hose to clean your driveway and sidewalk and save up to 303 liters of water every time. 14. If your shower can fill 4 liters bucket in less than 20 seconds, and then replace it with a water-efficient showerhead. 15. Collect the water you use for rinsing produce and reuse it to water houseplants.
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16. Water your lawn in several short sessions rather than one long one. This will allow the water to be better absorbed. 17. We’re more likely to notice leaky faucets indoors, but don’t forget to check outdoor faucets, pipes, and hoses for leaks. 18. Only water your lawn when needed. You can tell this by simply walking across your lawn. If you leave footprints, it’s time to water. 19. When you shop for a new appliance, keep in mind that one offering several different cycles will be more water and energy-efficient. 20. Time your shower to keep it under 5 minutes. You’ll save up to 3785 liters a month. 21. Install low-volume toilets. 22. When you clean your fish tank, use the water you’ve drained on your plants. The water is rich in nitrogen and phosphorus, providing you with a free and effective fertilizer. 23. Water small areas of grass by hand to avoid waste. 24. Put food coloring in your toilet tank. If it seeps into the toilet bowl, you have a leak. It's easy to fix, and you can save more than 2271 liters a month. 25. Plug the bathtub before turning the water on, then adjust the temperature as the tub fills up. 26. Use porous materials for walkways and patios to keep water in your yard and prevent wasteful runoff. 27. Designate one glass for your drinking water each day. This will cut down on the number of times you run your dishwasher/wash your utensils. 28. Instead of using a hose or a sink to get rid of paints, motor oil, and pesticides, disposes of them properly by recycling or sending them to a hazardous waste site. 29. Install a rain shut-off device on your automatic sprinklers to eliminate unnecessary watering. 30. Don’t use running water to thaw food. 31. Choose water-efficient drip irrigation for your trees, shrubs, and flowers. Watering roots is very effective, be careful not to over water. 32. Grab a wrench and fix that leaky faucet. It’s simple, inexpensive, and can save 530 liters a week. 33. Cut back on the amount of grass in your yard by planting shrubs and ground cover or landscaping with rock. 34. When doing laundry, match the water level to the size of the load. 35. Teach your children to turn the faucets off tightly after each use. 36. Remember to check your sprinkler system valves periodically for leaks and keep the heads in good shape. 37. Before you lather up, install a low-flow showerhead. They’re inexpensive, easy to install, and can save your family more than 1900 liters a week. 38. Soak your pots and pans instead of letting the water run while you scrape them clean. 39. Don’t water your lawn on windy days. After all, sidewalks and driveways don’t need water. 40. Water deeply but less frequently to create healthier and stronger landscapes. 41. Make sure you know where your master water shut-off valve is located. This could save liters of water and damage to your home if a pipe were to burst. 42. When watering grass on steep slopes, use a soaker hose to prevent wasteful runoff.
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43. To get the most from your watering time, group your plants according to their water needs. 44. Remember to weed your lawn and garden regularly. Weeds compete with other plants for nutrients, light, and water. 45. While fertilizers promote plant growth, they also increase water consumption. Apply the minimum amount of fertilizer needed. 46. Avoid installing ornamental water features unless the water is being recycled. 47. Use a commercial car wash that recycles water. 48. Don’t buy recreational water toys that require a constant flow of water. 49. Turn off the water while you brush your teeth and save 15 liters a minute. That’s 760 liters a week for a family of four. 50. Encourage your school system and local government to help develop and promote a water conservation ethic among children and adults. 51. Teach your family how to shut off your automatic watering systems so anyone who is home can turn sprinklers off when a storm is approaching. 52. Set a kitchen timer when watering your lawn or garden with a hose. 53. Make sure your toilet flapper doesn’t stick open after flushing. 54. Make sure there are aerators on all of your faucets. 55. Next time you add or replace a flower or shrub, choose a low water use plant for year-round landscape color and save up to 2085 liters each year. 56. Spot spray or remove weeds as they appear. 57. Use a screwdriver as a soil probe to test soil moisture. If it goes in easily, don’t water. Proper lawn watering can save thousands of liters of water annually. 58. Install a drip irrigation system around your trees and shrubs to water more efficiently. 59. Mow your lawn as infrequently as possible. Mowing puts your lawn under additional stress, causing it to require more water. 60. Don’t use the sprinklers just to cool off or for play. Running through water from a hose or sprinkler wastes gallons of water. 61. Make sure your swimming pools, fountains, and ponds are equipped with recirculating pumps. 62. Bathe your young children together. 63. Direct downspouts or gutters toward shrubs or trees. 64. Insulate hot water pipes so you don’t have to run as much water to get hot water to the faucet. 65. Drop that tissue in the trash instead of flushing it and save liters every time. 66. If you have an evaporative air conditioner, direct the water drain to a flowerbed, tree, or your lawn. 67. Make suggestions to your employer to save water (and dollars) at work. 68. When brushing your teeth never leave tap water running. 69. Use a hose nozzle and turn off the water while you wash your car and save more than 380 liters.
5.13 Energy Efficiency Measures in a Typical Household 5.13.1 Hot Water Repair leaky faucets. Reduce the temperature setting of your water heater to warm (500 C). Add an insulating blanket to your water heater. 5 - 38 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Install low-flow showerheads. Wash clothes in warm or cold water using the appropriate water level setting forthe load. Replace water heater, when needed, with an energy efficient model.
Major Appliances and Other Appliances Maintain refrigerator at 2 to 50 C and freezer section at –15 0 C. Maintain stand alone freezer at 0 F. Choose a refrigerator/freezer with automatic moisture control. Use toaster ovens or microwave ovens for cooking small meals. Adjust the flame on gas cooking appliances so it’s blue, not yellow. Replace a gas-cooking appliance with a unit with an automatic, electric ignition system. Run the dishwasher only with a full load of dishes. Air dry dishes in a dishwasher. Shut down home computers when not in use. Select appliances (i.e., curling irons, coffee pots, irons) with time limited shut off switches. Replace aging major appliances, TVs and VCRs when needed, with energy efficient models. Replacing a 1970s refrigerator with an energy efficiency refrigerator. This can save over 2,000 kWh per year. This will also reduce carbon dioxide emissions by over 2,000 pounds every year. Increase Air Conditioner thermostat by 3 degrees F. This can save over 900 kWh per year, annually and over 900 pounds of carbon dioxide each year. Depending on the size of your home, you can save 3% on your cooling costs for every degree you raise your thermostat in the summer. Raising the thermostat from 73 to 78 F degrees can reduce cooling costs by 15%. Make sure your air conditioner is the proper size for the area you are cooling. An air conditioner that is too large will use more electricity than needed; an air conditioner that is too small will have to work harder to cool a space. The recommended Air conditioners based on the room size are as follows:
Area To Be Cooled (sq. ft.) Capacity (BTU/HR) 100 to 150 5,000 150 to 250 6,000 250 to 300 7,000 300 to 350 8,000 350 to 400 9,000 400 to 450 10,000 450 to 550 12,000 500 to 700 14,000 700 to 1,000 18,000 Only run the washing machine, dryer, and dishwasher when you have full loads. Cool only the rooms you use and utilize fans when the temperature is moderate. Lighting Turn off lights when not in use. 5 - 39 Team Labs and Consultants RDB Hyd Infrastructure Pvt. Ltd., Environmental Impact Statement
Use task lighting whenever possible instead of brightly lighting an entire room.
Install compact fluorescent lamps in the fixtures which receive high use. Replace the five most frequently used incandescent light bulbs with compact fluorescent bulbs. This will save over 500 kWh per year, and over 500 pounds of CO2. 5.14 Fire Protection Plan/System Description The fire protection system consists of the following: a) Hydrant system for entire housings with each floor having a hydrant. b) High Velocity Water Spray System (HVWS) for Generator, Transformers, etc. c) Water sump (capacity of 30 KL) for the hydrants will be at the top of each building. d) Portable fire extinguishers in different areas of the housing. e) Microprocessor based intelligent addressable fire detection and alarm system will be provided at all floors of the buildings and silt area.
Design, Construction & Operating Conditions Water supply for the fire protection system will be provided from the clarified water storage tank. Adequate dead storage will be provided for fire protection system. Common pumps for hydrant and spray systems will be provided with provision for interconnection between the two. Booster pumps of 900-litres/minute capacity will be provided at top of the building for drawing water from the sump of 30 Kl capacity The hydrant system will be provided for all the areas of the housing project. Hydrant system will consist of the underground ring headers, mains (piping) upto the individual hydrant outlets, risers and above ground branch headers (terminal mains) with isolating valves in case of landing valves/internal hydrants, stand posts, single headed or double headed hydrant valves depending on the hazard covered, hoses, hose couplings, branch pipes and nozzle assemblies, etc. All accessories required for external and internal hydrants will be stored in hose boxes located alongside each hydrant. The system will be adequately designed to maintain the required pressure in the hoses operated from the farthest hydrant ring main. Portable extinguishers of suitable capacity, rating and medium (water, sand, CO2, foam, etc.) in adequate numbers covering all the buildings in the power plant premises will be provided.
Suitable alarm system with audiovisual indicators for personnel safety shall be provided in the event of fire and extinguish discharge. Suitable extinguish gas detectors shall also be provided for detecting presence or discharge of extinguishant and provide warning to personnel. The system provided shall be of the highest order and testing on routine basis shall be possible.
Codes & Standards The applicable codes & standards will be the latest version of the following: IS: 1975 – Line Pipes IS: 1367,GL – 4B,4 – Technical supply conditions for threaded steel fasteners IS:1239 – Mild steel tubes, tubular and other wrought steel fittings IS: 10221 – Code of practice for coating and wrapping of underground mild steel structures
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IS: 903 – Fire hose delivery couplings, branch pipe, nozzles and nozzle spanner IS: 4927 – Unlined flax canvas hose for fire fighting IS: 5423 – Controlled percolating hose for fire fighting IS: 5290 – Landing valves IS: 2575 – Specification for fire extinguisher, carbon-do-oxide type (portable and trolley mounted) IS: 933 – Portable chemical foam fire extinguisher IS: 2171 – Portable fire extinguishers, dry powder(cartridge type) IS: 4305 – Specification for dry powder for fire fighting IS: 4561 – Dry powder for fire fighting in burning metals IS: 2571 – Specification for branch pipe, universal for fire fighting purposes IS: 2159 – Selection, installation and maintenance of automatic fire detection and alarm system IS: 636 – Non- percolating flexible fire fighting delivery hose IS: 3034 – Fire safety of industrial buildings: electrical generating and distributing stations. IS:9137 - Code for acceptance tests for centrifugal, mixed flow and axial pumps – Class C IS:10951 – Class of acceptance test for centrifugal flow and axial pumps Tariff Advisory Committee (TAC) of India/NFPA standards OISD – 117 – Oil Installations
System Description The fire protection system contains; Firewater pumping system, Wet riser system and Hose reel system, Yard hydrant system, Automatic sprinkler system, The Pressurisation system, Portable First Aid fire extinguishers, Fire safety plans, Analogue addressable Automatic fire detection and alarm system.
Firewater pumping system Firewater to the complete fire protection system shall be catered through an RCC Underground (UG) storage tank of capacity 300 cum located at the ground floor of the office building. Water to this tank shall be fed by gravity tapped off from the bore well water supply line. The following are the motor driven and diesel driven firewater pumps that shall be located adjacent to the UG storage tank. i) Fire Hydrant pump (Motor driven) -1 No. 2550 lpm @100m head. ii) Sprinkler pump (Motor Driven) – 1 No. 2550 lpm @ 100 m head iii) Common standby pump (Engine driven) 1 No. 2550 lpm @ 100m head. iv) Jockey pump (Motor driven) -1 No.150 lpm @ 100m head shall be provided for maintaining system pressure at all times and to compensate the minor losses. v) Terrace level booster pump (motor driven) – 1No. 900 lpm @35m head. All the pumps will be of horizontal centrifugal end suction type. These pumps shall draw water from the underground RCC static tank of capacity 300 cu.mtrs for hydrant and sprinkler system.
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The level switches shall be provided in the Underground tank and terrace tank. Breaching inlet shall be provided at the inlet of the storage tank for quick filling by fire brigade.
Wet riser and Hose reel system Wet riser shall be provided at all floor landings of the staircase of the office building. Water supply to the wet risers shall be fed directly from the motor driven wet riser pump. This system shall consist of double hydrant outlet landing valve installed at a height of 1000 mm above finished floor level and a separate tap off for hose reel associated with hoses, branch pipe and nozzles for office building at each floor on each riser. The system shall be designed hydraulically to meet the flow and pressure requirements as per NBC. Hydrant accessories such as hose reel, branch pipe and nozzles etc. shall be provided in separate enclosures/cabinet with glass panels.
Four way breaching inlet with sluice check valve shall be installed and connected to each wet risers. The breaching inlets shall be located at 1000 mm above the ground floor level.
The pipe material for Wet risers shall be Galvanised Iron (GI) "C" class as per requirements of the local fire officer from pump house to discharge to Wet riser and hose reel system topmost hydrant/ hose reel. In the event of fire, if the hydrant or hose reel are opened, the pressure in the wet riser main will drop due to the resulting flow, thereby the booster pump comes in to operation at a preset low pressure. If the pressure drops further, at a preset low pressure in the wet riser, the wet riser pump shall start automatically by getting an impulse from a pressure switch provided on the main.
In case the wet riser pump fails to start, the pressure in the main will drop further and at a pre-set low pressure, the common standby pump diesel shall come into operation by getting an impulse from a pressure switch provided. Stopping of the pump shall be manual.
Automatic Sprinkler Systems Automatic sprinkler system shall be provided to cover all the floors of the office building. Sprinklers shall be provided in two layers in all the floors of the office area, upright type sprinkler at RCC ceiling level and pendent type sprinkler with rosette plate at false ceiling level. Water supply to the sprinkler system shall be fed from the motor driven sprinkler pump. This system shall be designed hydraulically to meet the flow and pressure requirements as per codes and standards. This system shall comprise of network of piping, valves, sprinkler heads, flow switches etc. The sprinklers shall be designed to produce spherical type of discharge with a portion of water being thrown upwards to the ceiling. Sprinklers shall be of satin-chromed finish to architect's requirement. Ceiling plates shall be of steel construction and shall be either chromed or painted to architect's requirement. Sprinkler pipes shall be so installed that the system can be thoroughly drained.
Four Way breaching inlet with check valves shall be provided and connected to the each sprinkler riser.
The mode of operation of the sprinkler system is as follows:
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In the event of fire in any section of the area to be protected by the sprinkler system, the sprinklers in that particular section shall open initiating the flow of water and annunciating the flow of water through flow switch provided at each sprinkler tap off riser. The motor driven sprinkler pump shall start automatically due to consequential pressure drop in the sprinkler system piping. In case motor driven sprinkler pump fails to start, standby diesel engine driven pump shall come into operation by getting an impulse from a pressure switch provided at a preset low pressure. During sprinkler system operation a local alarm shall be raised by activation of flow switch. Stopping of the pumps shall be manual.
Yard Hydrant System The yard hydrant shall be located at various places around the building. The water supply for yard hydrant shall be tapped off from wet riser system headers. Each single headed yard hydrant shall be provided with hoses, nozzles and accessories. All Hydrant accessories shall be located in a Hose box adjacent to Hydrant valve. Brick masonry valve chambers with cast iron covers shall be provided wherever required for isolating the system to enable maintenance if any without affecting the complete system.
The mode of operation of the hydrant system is as follows. In the event of fire, hydrant valves are opened, at the preset low pressure the wet riser pumps shall start as furnished in Wet riser system. In case of failure of wet riser pump stand by common pump shall come into operation.
Pressurization System The common pressurization system of wet riser system shall comprise of one (1) Jockey pump operating automatically. In the event of minor system leakages either in wet riser system the Jockey pump will start automatically by getting an impulse from pressure switch provided on the discharge header of the Jockey pump. The Jockey pump shall stop automatically once the mains pressure is restored to original set value. All pressure switches shall have two (2) contacts -one for starting / stopping the Jockey pump and the other for Jockey pump running annunciation in the panel. The control panel shall have all necessary control and interlock for operation and control of the pumps. Jockey pump shall not be running when main pump/booster pump are under operation.
Portable First Aid Fire Extinguishers Portable extinguishers such as carbon-di-oxide extinguishers, dry chemical powders etc. shall be provided in all areas of the building. The type of portable fire extinguishers and their numbers shall be as per NBC. Service tags shall be provided and attached on all extinguishers installed.
4.5kg extinguisher to be provided for every 500sqft of work area, every electrical room, and in every AHU room. A 22.5kg DCP cylinder on trolley for every DG set and UPS.
All safety equipments like fire buckets with one spare filled cylinder shall be provided.
Fire Safety Plans Fire escape route printed in signal red colour shall be fixed near fire exit staircases, which shall show directions to the inmates for escape in case of fire.
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Fire order as per NBC shall be fixed near lift/lift lobby, which shall guide action to be taken in case of fire.
Analogue Addressable Automatic Fire Detection and Alarm system Automatic fire alarm and detection and alarm system shall be provided for the office complex.
The fire detection and alarm system proposed consists of: Multi sensor Smoke detectors which shall be provided in the electrical switchgear room, electrical riser/ducts, lift shaft, lift machine room, BAS, communication room, and in office area of all the floors above and below the false ceiling. Heat detectors shall be provided in pantry, DG room and kitchen. Manual call points shall be provided at all the entrances and exits. Hooters with strobe lights shall be provided at all the entrances and exits, staircases and also inside office areas.
Mimic panel shall be located in the smoke free lobby at each floor of office building to indicate the location of fire. A central fire alarm panel shall be located at the Fire command centre. This panel shall have the indication to identify the location of fire in the building.
Fire alarm panel shall be located at the reception area and the repeater panel shall be located in the guardhouse.
The provisions shall conform to the requirements of the National Building Code (NBC) 1953, AMD3 (SP-7 1953, part- IV).
Fire Suppression System FM200 Gas fire suppression system is recommended for the server rooms. Inspection and Testing Inspection & testing will be carried out as per the Approved Quality Assurance plan. Minimum requirement will be as indicated below.
Shop Tests on Hydrant Valves: a) Dimensional b) Hydro test of body c) Flow test on 5% of valves d) Seat leakage Test e) Operational check
Shop Tests on hose cabinets: a) Hydro Test of hose pipe/coupling/nozzle b) Percolation test c) Burst test (Type test or Type test report)
Dimensional Inspection On completion of erection, at Site, Pipes will be hydro tested at 1.5 times the pump shut-off head, or twice the operating pressure, whichever is higher.
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Annexure - A Detailed Cost Estimate Capital cost in (Rs.Lakhs) Recurring cost in (Rs.Lakhs) Description Construction Occupation Construction Occupation Phase Phase Phase Phase DG Stack 25.0 5.0 Personal protective Air Pollution equipments 0.6 0.8 0.3 Control Equipment maintenance 0.5 0.1 0.1 Sprinkling of water 11.4 4.6 Total 37.5 0.9 9.9 Sedimentation tank 0.3 0.1 Rain water harvesting pits 1.8 0.3 Rain water harvesting sump Water (KL) 0.8 0.2 Pollution Control Sewage treatment plant (KLD) 55.0 Temporary Toilets 0.6 0.1 Dual Plumbing 24.3 12.2 STP maintenance 60.0 Total 82.8 0.0 12.9 60.0 Noise Personal protective Pollution equipments 0.6 0.6 0.2 Control Acoustic enclosures 10.0 3.0 2.0 Total 10.6 3.6 2.2 Ambient air quality studies - Once in six months - 2 0.14 0.2 locations Environmental Water quality studies - Once a monitoring 0.03 0.1 year - 2 Locations Noise studies - Once in six 0.04 0.1 months - 2 Locations STP Lab 12.0 2.4 Total 0.2 12.0 0.3 2.4 Green belt & Green belt 5.3 1.1 0.3 Open area Horticulturists & Gardeners development 1.4 Total 5.3 1.1 0.3 1.4 Construction waste storage 2.5 0.3 1.0 Solid Waste Garbage Segregation point 3.0 0.3 0.3 Garbage 10.1 Total 5.5 0.6 1.3 10.1 Solar lighting 2.0 0.4 0.4 Solar Heaters 44.4 0.9 0.9 Barricade 8.6 Others Safety Signage 0.3 0.1 0.1 LED Lighting 0.1 0.1 0.0 Roof insulation 7.4 0.7 Training & Mobilization 0.1 0.1 Total 62.8 0.0 1.5 2.2 Grand Total 204.6 13.6 20.8 88.3
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Studies and Documentation by: M/s Team Labs and Consultants B-115, 116, 117 & 509, Annapurna Block, Aditya Enclave, Ameerpet, Hyderabad- 500 038 Phone: 91-040-23748555/616 Fax : 91-040-23748666 e-mail: [email protected]