FORM 1. Project Proponent: M/s Casa Grande Private Limited. EQMS India Pvt. Ltd.

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1 June 2015 FORM 1 FORM 1 Residential Development At S.No: 163/1, 163/2,164/2, Thalambur village, Thiruporur Taluk, Kanchipuram District. Project Proponent: M/s Casa Grande Private Limited Prepared By: EQMS India Pvt. Ltd. & Ecotech Labs Pvt. Ltd. QCI (NABET)/MOEF ACCREDITED CONSULTANT , Rishabh Corporate Towers, Plot No. 16, Community Centre Karkardooma, Delhi NABL Accreditated No.4, Manjolai 1st Main Road, Ekkaduthangal, Guindy, Chennai

2 June 2015 FORM 1 FORM 1 Residential Development At S.No: 163/1, 163/2,164/2, Thalambur village, Thiruporur Taluk, Kanchipuram District. Project Proponent: M/s Casa Grande Private Limited Prepared By: EQMS India Pvt. Ltd. & Ecotech Labs Pvt. Ltd. QCI (NABET)/MOEF ACCREDITED CONSULTANT , Rishabh Corporate Towers, Plot No. 16, Community Centre Karkardooma, Delhi NABL Accreditated No.4, Manjolai 1st Main Road, Ekkaduthangal, Guindy, Chennai

3 Residential Development Thalambur village, Thiruporur Taluk, Kanchipuram District FORM 1 CONTENTS SI. NO. DESCRIPTION PAGE NO. I Basic Information 1 II Activity 3 III Environmental Sensitivity 14 M/s Casa Grande Private Limited

4 Form I for Residential Development Project M/s. Casa Grande Private Limited FORM I I.BASIC INFORMATION S. No. Item Details 1 Name of the project Proposed Construction of Residential Building ELAN 2 S. no. in the schedule 8 (a) 3 Proposed area Area Details: Total land area: sqm Proposed FSI : sqm Total built-up area: sqm 4 New/Expansion/Modernization New 5 Existing capacity/area etc Nil 6 Category of project i.e. A or B Category B 7 Does it attract the general condition? If yes, please specify No 8 Does it attract the specific condition? If yes, please specify No 9 Plot/Survey/Khasra No 12 51'53.32"N & 80 12'49.86"E Survey Numbers: 163/1, 163/2,164/2 Village Thalambur village Tehsil Thiruporur Taluk District Kanchipuram District State Tamilnadu 10 Nearest railway station/airport along with distance in kms 11 Nearest town, city, district headquarters along with distance in kms 12 Village panchayats, Zilla parishad, municipal corporation, local body (Complete postal addresses with telephone nos. to be given) Nearest Railway Station: Tambaram Railway Station (Approx. 12 km, WSW) Nearest Airport : Chennai International airport (Approx. 14 km, NNW) (Source of information:- Google Earth Image) Nearest Town : Semmancheri (2.0 km, ESE) Nearest City : Chennai (23.0 km, N) District head quarters : Kanchipuram (55 km, SW) Directorate of Town and Country Planning (DTCP) 807, Anna salai, Chennai Name of the applicant Mr. K. R. Anerudan 14 Registered address NPL Devi building New no. 111, Old no. 59, 5 th Floor,L.B Road, Thiruvanmiyur, Chennai Address for correspondence: Name Mr. K.R. Anerudan Page _ 1

5 Form I for Residential Development Project M/s. Casa Grande Private Limited Address Pin code Telephone No. / Fax No. 16 Details of alternative sites examined, if any, Location of these sites should be shown on a topo sheet NPL Devi building New no. 111, Old no. 59, 5 th Floor,L.B Road, Thiruvanmiyur, Chennai [email protected] Phone : No alternative site is considered. 17 Interlinked projects No interlinked projects 18 Whether separate application of No interlinked project has been submitted? 19 If yes, date of submission NA 20 If no, reason NA 21 Whether the proposal involves No approval/clearance under: if yes, details of the same and their status to be given. (a) The forest (conservation) Act, 1980? (b) The wild life (Protection) Act, 1972? (c) The CRZ Notification Whether there is any government No order/policy relevant/relating to the site 23 Forest land involved (hectares) No 24 Whether there is any litigation pending against the project and/or land in which the project is propose to be set up? a) Name of the Court b) Case No c) Orders/directions of the court, if any and its relevance with the proposed project No II. ACTIVITY 1. Construction, operation or decommissioning of the Project involving actions, which will cause physical changes in the locality (topography, land use, changes in water bodies etc.) Page _ 2

6 Form I for Residential Development Project M/s. Casa Grande Private Limited S. No. Information/Checklist confirmation 1.1 Permanent or temporary change in land use, land cover or topography including increase in intensity of land use (with respect to local land use plan) 1.2 Clearance of existing land, vegetation and buildings? Yes/No Details thereof (with a pproximate quantities /rates, wherever possible) with sources of information data Yes Project site comes under Unclassified use Zone by Directorate of Town and Country Planning. Project site is surrounded by Residential development. Copy of land use certificate is enclosed as Annexure - IV. No The construction of project does not require any clearance of existing Land, Vegetation & Building. 1.3 Creation of new land uses? Yes Project is earmarked for residential development as per the master development plan of area. Copy of land use certificate is attached as Annexure - IV. Yes 1.4 Pre-construction investigations e.g. bore holes, soil testing? Geo-technical investigations have been carried out and the copy of the report is enclosed as Annexure XI. 1.5 Construction works? Yes All construction activities will be confined within the project premises; there will be no physical changes outside the project boundary. Project development comprise of development of villas in a span of about months. 1.6 Démolition Works? No The proposed site is vacant land. 1.7 Temporary sites used for construction works or housing of construction workers? 1.8 Above ground buildings, structures or earthworks including linear structures, cut and fill or excavations No Yes All the construction activities including stacking of raw materials will be confined within the project site only. No temporary labor hutments are proposed. Local laborers from nearby areas will be hired for the work. Proper sanitation facilities for them will be provided at site. Above ground buildings in the proposed development is listed below: Total Built No of Levels/Floors Up Area (Sqm) Type A Type A Type A Type B Type B Page _ 3

7 Form I for Residential Development Project M/s. Casa Grande Private Limited 1.9 Underground works including mining or tunneling? No Type B Type B Type B S North S South Club House Total No underground works including mining/ tunneling is required except excavation of earth for constructing basement and foundation as proposed within project site Reclamation Works? No No reclamation work required Dredging? No No dredging required Offshore structures? No No offshore structures required Production and manufacturing processes? 1.14 Facilities for storage of goods or materials? 1.15 Facilities for treatment or disposal of solid waste or liquid effluents? No No production/manufacturing process involved. The proposed project is a residential development. Yes Separate temporary raw material handling yard will be located within the project site and separated by enclosures/barricades. Cement will be separately stored under cover in bales. Sand will be stacked under tarpaulin cover. Bricks and steel will be laid in open. Yes Solid Waste: The solid waste generated from the project will be in the form of: Construction Waste: Left over cement and mortars, cement concrete blocks, aggregate, sand and other inorganic material will be recycled and reused as granular subbase (GSB ) layer of pavement. Earth rendered surplus from the excavation will be utilized in the embankment works. Operational Phase: Door to door waste collection system will be adopted. Waste will segregated at source by providing separate bins for compostable, recyclable and inert waste. Compostable Page _ 4

8 Form I for Residential Development Project M/s. Casa Grande Private Limited 1.16 Facilities for long term housing of operational workers? 1.17 New road, rail or sea traffic during construction or operation? 1.18 New road, rail, air waterborne or other transport infrastructure including new or altered routes and stations, ports, airports etc? 1.19 Closure or diversion of existing transport routes or infrastructure leading to changes in traffic movements? 1.20 New or diverted transmission lines or pipelines? 1.21 Impoundment, damming, culverting, realignment or other changes to the hydrology of watercourses or aquifers? No Yes No No waste will be treated in Organic Waste Converter and recyclable waste will be sold to the authorized recyclers. Inert fraction will be handed over to local authority managing waste in the area for landfilling. Liquid Effluent: During the construction phase, sewage generated from the project will be disposed by Septic tank and soak pit arrangements. During operational phase also, sewage generated from the project will be treated in the proposed STP of capacity. It is expected traffic of 440 ECS will be generated from project site during operation phase. Apart from this it is expected traffic of trucks per week will be generated during construction phase for transportation of men and material at the site Project site is accessible and is well connected via network of rail & road. No new road, rail, air waterborne or other transport infrastructure will be developed. Only internal roads will be constructed for facilitating movement of vehicles and connecting the site to the existing roads. None No There will not be any new/diverted transmission lines or pipelines around the proposed project. No No impoundment, damming, culverting, realignment or other changes to the hydrology of surface watercourses is proposed Stream crossings? No There are no streams running across the site Abstraction or transfers of water from ground or surface waters? No Page _ 5

9 Form I for Residential Development Project M/s. Casa Grande Private Limited 1.24 Changes in water bodies or the land surface affecting drainage or run-off? 1.25 Transport of personnel or materials for construction, operationor decommissioning? 1.26 Long-term dismantling or decommissioning which could have an impact on the environment? 1.27 Ongoing activity during decommissioning which could have an impact on the environment? 1.28 Influx of people to an area in either temporarily or permanently? No -- Yes Transportation of personnel and material by road will be necessary for the contractors during the construction phase. No No Long term dismantling or decommissioning or restoration works will be involved. No -- Yes Project is development of residential apartments. This will involve shuffling of population within the area Introduction of alien species? No Loss of native species or No There will be no significant impact on the genetic diversity? native species or genetic diversity Any other actions? No Not Applicable. 2. Use of Natural resources for construction or operation of the Project (Such as land, wate r, materials or energy, especially any resources which are non-renewable or in short supply): S. No. Information/Checklist confirmation 2.1 Land especially undeveloped or agricultural land (ha) 2.2 Water (expected source & competing users) Unit: KLD Yes/ No Yes Yes Details thereof (with approximate quantities / rates, wherever possible) with sources of information data Land is earmarked for residential development as per master development plan of the area Construction Stage: About KLD of water will be required during the peak construction phase and it will be sourced through private tankers arranged by the contractor. Operation Stage: About 179 KLD of raw (fresh) water will be required for the project. The source of water supply is Ground water. 2.3 Minerals (MT) No Minerals such as sand and aggregates will be required during the construction phase. 2.4 Construction material Yes All materials for construction will be arranged Page _ 6

10 Form I for Residential Development Project M/s. Casa Grande Private Limited stone, aggregates, and / soil (expected source - cum) 2.5 Forests and timber (source MT) 2.6 Energy including electricity and fuels (source, competing users) Unit: fuel (litres/hour), energy (kva) 2.7 Any other natural resources (use appropriate standard units) No -- through select suppliers. Yes The estimated power requirement during operation phase is about 2750 KVA and it will be sourced from the nearby TNEB grid which will be distributed through the transformers within our premises. For emergency purposes, it is proposed to use DG sets of the following capacities. 1 no. of 180 KVA capacity No Not Applicable 3. Use, storage, transport, handling or production of substances or materials which could be harmful to human health or the environment or raise concerns about actual or perceived risks to human health. S. No. Information/Checklist confirmation 3.1 Use of substance or materials, which are hazardous (as per MSIHC rules) to human health or the environment (flora, fauna, and water supplies) 3.2 Changes in occurrence of disease or affect disease vectors (e.g. insect or water borne diseases) 3.3 Affect the welfare or people e.g. by changing living conditions? 3.4 Vulnerable groups of people No -- Yes/No Details thereof (with approximate quantities /rates, wherever possible) with sources of information data Yes This project is a Residential development and no storage of hazardous chemicals (as per MSIHC) will be done, apart from Diesel. HSD (of low sulphur content) will be used for DG sets. Necessary permission will be obtained from the authorities concerned (if applicable). No Suitable drainage and waste management measures (with frequent spray of insecticides etc.) will be adopted in both the construction and operational phase such that there will be no stagnation of water or accumulation of waste. This will effectively restrict the reproduction and growth of disease vectors. No Socio-economic standard of people will improve due to increased employment opportunities, better living facility & commercial services provided by this project. This will lead to better quality of life and will also set a standard for future developments in the area. Page _ 7

11 Form I for Residential Development Project M/s. Casa Grande Private Limited who could be affected by the project e.g. hospital patient s children, the elderly etc., 3.5 Any other causes No Not Applicable 4. Production of solid wastes during construction or operation or decommissioning (MT/ month) S. No. Information/Checklist confirmation Yes/No Details thereof (with approximate quantities /rates, wherever possible) with sources of information data 4.1 Spoil, overburden or mine wastes No No such spoil, overburden or mine wastes will be generated. 4.2 Municipal waste (domestic and or commercial wastes) Yes The solid waste will comprise biodegradable waste (e.g. domestic waste, food waste, horticultural waste etc.) and Non biodegradable waste ( e.g. plastics, paper etc). The quantity of waste generation is Compostable Waste Recyclable Waste Inert Waste STP Sludge : Tons/day : Tons/day : Tons/day : 12 Kg/day (Source: The manual on municipal solid waste prescribed by Central Public Health and Environmental Engineering Organization (CPHEEO)). 4.3 Hazardous wastes (as per Hazardous Waste Management Rules ) No Door to door waste collection system will be adopted. Waste will segregated at source by providing separate bins for compostable, recyclable and inert waste. Compostable waste will be treated in Organic Waste Converter and recyclable waste will be sold to the authorized recyclers. Inert fraction will be handed over to local authority managing waste in the area for land filling. Spent Oil from DG sets: The hazardous wastes generated in the project as per the Management, Handling & Transboundary Movement Rules, 2008 is used oil from DG sets, which is classified as per The Hazardous Waste Category 5.1. Page _ 8

12 Form I for Residential Development Project M/s. Casa Grande Private Limited Used oil from DG sets will be stored in HDPE drums in isolated covered facility. This used oil will be sold to authorized recyclers. Suitable care will be taken so that spills/leaks of used oil from storage are avoided. 4.4 Other industrial process wastes No Surplus product No Sewage sludge or other sludge from effluent treatment 4.7 Construction or demolition wastes 4.8 Redundant machinery or equipment yes Yes 4.9 Contaminated soils or other materials 4.10 Agricultural wastes No Other solid wastes No Not Applicable The sewage sludge of 12 kg/day from STP will be dried and used as manure for the gardening area and there is no any sludge other than STP will be generated. The construction waste will consist of excess earth and construction debris along with cement bags, steel in bits and pieces, insulating and packaging materials etc. Recyclable waste construction materials will be sold to recyclers. Unusable and excess construction debris will be disposed at designated places in tune with the local norms. There is no demolition of the existing structures as the site is a vacant land and the expected construction waste free from any hazardous content shall be used for road formation and filling within the premises. No All machinery / equipment will be installed as per the requirement and the unused items will be taken back by the contractor. No Release of pollutants or any hazardous, toxic or noxious substances to air (Kg/hr) S. No. Information/Checklist confirmation Yes/No Details thereof (with approximate quantities /rates, wherever possible) with sources of information data 5.1 Emissions from combustion of fossil fuels from stationary or mobile sources Yes Pollutants like particulate matters, CO, SO 2 and NO x will be released into the atmosphere due to the operation of DG sets and other machineries of construction which uses fossil fuels. However the DG sets will be operated only during power cuts. Page _ 9

13 Form I for Residential Development Project M/s. Casa Grande Private Limited 5.2 Emissions from production processes 5.3 Emissions from materials handling including storage or transport 5.4 Emissions from construction activities including plant and equipment 5.5 Dust or odors from handling of materials including construction materials, sewage and waste. 5.6 Emissions from incineration of waste 5.7 Emissions from burning of waste in open air (e.g. slash materials, construction debris) 5.8 Emissions from any other sources Also the use of HSD (of lower sulphur content) and dispersion of the DG flue gases through stacks having heights as per norms of CPCB will minimize the impacts. No -- Yes Yes Yes No No -- No Dust emissions are envisaged during transport and handling of construction materials. Such emissions will be temporary and controlled by the use of sprinkling and other viable techniques like covering of loose material. This will be restricted to the construction phase and the construction site only. Emissions from construction activities will be reduced by using low sulphur content HSD for the machineries operated with fossil fuels and the accumulation of particulate matter in the atmosphere will be suppressed by sprinkling of water in the dust prone areas at regular intervals. Dust at construction site will be suppressed by sprinkling water at site. On-site sanitation facilities will be provided. No incineration of wastes is proposed. Not Applicable 6. Generation of Noise and Vibration, and Emissions of Light and Heat: S. No. Information/Checklist confirmation 6.1 From operation of equipment e.g. engines, ventilation plant, crushers Yes/No Yes Details thereof (with approximate quantities /rates, wherever possible) with sources of information data Source of noise in the operational phase will be from backup DG sets (which will be in operation only during power failure) and pumps & motors. All the machinery will be of highest standard of reputed make and will comply with standard i.e. The DG set room will be provided with acoustic Page _ 10

14 Form I for Residential Development Project M/s. Casa Grande Private Limited enclosure to have minimum 25 db(a) insertion loss or for meeting the ambient noise standard whichever is on higher side as per E (P) Act, GSR 371 (E) and its amendments. Therefore, no significant impact due to operation of machinery is anticipated. 6.2 From industrials or similar processes No No industrial processes will be carried out in the project. 6.3 From construction or Yes Due to various construction activities, there will demolition be short-term noise impacts in the immediate vicinity of the project site. The construction activities will include the following noise generating activities: Concreting, mixing & operation of DG sets. Construction plant and heavy vehicle movement. 6.4 From blasting or piling No No blasting or mechanized piling will be done. 6.5 From construction or operational traffic 6.6 From lighting or cooling systems 6.7 From any other sources No -- Yes During construction activities, Adequate measures as mentioned above will be taken to reduce the impacts due to movement of heavy vehicles. Operational traffic will not contribute much towards noise. Yes Adequate measures would be taken at the time of selection of equipment to minimize the noise or heat. Proper preventive maintenance will be adopted during the operation stage. 7. Risks of contamination of land or water from releases of pollutants into the ground or into sewers, surface waters, groundwater, coastal waters or the sea: S. No. Information confirmation /Checklist 7.1 From handling, storage, use or spillage of hazardous materials 7.2 From discharge of sewage or other effluents to water or the land (expected mode and place of discharge) Yes/No Yes No Details thereof (with approximate quantities /rates, wherever possible) with sources of information data Spent oil from DG sets (Hazardous waste category 5.1) will be stored in drums, this will be handed over to SPCB /MoEF authorized waste oil recyclers. The wastewater generation from the project is estimated to be about 236 KLD which will be treated in the proposed STP, the treated waste water will be reused for toilet flushing, gardening and the excess will be disposed through Local body for roadside plantation and Page _ 11

15 Form I for Residential Development Project M/s. Casa Grande Private Limited public parks. 7.3 By deposition of pollutants emitted to air into the land or into water No The DG Sets will be provided with stacks of adequate height and will be air cooled. Hence dispersion will be achieved and avoid deposition of pollutants in significant concentrations at any single location 7.4 From any other sources No Not Applicable 7.5 Is there a risk of long term build up of pollutants in the No Not Applicable environment from these sources? 8. Risk of accidents during construction or operation of the Project, which could affect human or the environment S. No. Information/Checklist confirmation 8.1 From explosions, spillages, fires etc from storage, handling, use or production of hazardous substances Yes/No No Details thereof (with approximate quantities /rates, wherever possible) with sources of information data This project is a Residential development. Hence, it does not involve any probable explosions, spillages and fires. During construction, all the laborers will be provided with suitable personal protective equipment (PPE) as required under the health & safety norms. Training and awareness about the safety norms will be provided to all supervisors and laborers involved in construction activity. Contractor will deal with the safety aspects during construction. No major hazardous waste will be stored within the project site. No industrial or process activity is involved in this project. Hence, chances of chemical hazards and accidents are normally nil. To deal with any fire related accident, fire fighting facility of single handed hydrant valve, long hose reel, and portable fire extinguisher will be provided. 8.2 From any other causes No Not Applicable 8.3 Could the project be affected by natural disasters causing No The area under study falls in Zone-III, according to the Indian Standard Seismic Zoning Map. Page _ 12

16 Form I for Residential Development Project M/s. Casa Grande Private Limited environmental damage (e.g. floods, earthquakes, landslides, cloudburst etc)? Suitable seismic coefficients in horizontal and vertical directions respectively, are incorporated in designing the structures. 9. Factors which should be considered (such as consequential development) which could lead to environmental effects or the potential for cumulative impacts with other existing or planned activates in the locality S. No. Information/Checklist confirmation 9.1 Lead to development of supporting facilities, ancillary development or development stimulated by the project which could have impact on the environment e.g.: Supporting infrastructure (roads, power supply, waste or wastewater treatment, etc.) Housing development Extractive industries Supply industries Yes/No Yes Details thereof (with approximate quantities /rates, wherever possible) with sources of information data The project may trigger the development of supporting and ancillary facilities, and further may lead to other developments. This will not lead to any potential negative impacts on environment. Yes within the project site Residential Towers Not applicable Not applicable Other 9.2 Lead to after use of the site, which could have impact on the environment 9.3 Set a precedent for later developments 9.4 Have cumulative effects due to proximity to other existing or planned projects with similar effects Not applicable No Not Anticipated Yes The proposed development will set a precedent for later developments. No -- III. ENVIRONMENT SENSITIVITY S. No. Areas Yes/No Aerial distances (within 15 km.) Proposed project location boundary 1. Areas protected under No -- Page _ 13

17 Form I for Residential Development Project M/s. Casa Grande Private Limited international conventions, national or local legislation for their ecological, landscape, cultural or other related values 2. Areas which are important or sensitive for ecological reasons Wetlands, water courses or other water bodies, coastal zone, biospheres. Mountains, forests 3. Areas and by protected, important or sensitive species of flora or fauna for breeding, nesting, foraging, resting, over wintering, migration 4. Inland, coastal, marine or underground waters Yes No -- Yes Muttakadu Backwaters lies at 2.5 km in Eastern Direction, Ottiambakkam Lake lies at a distance 2 km in Southwestern direction, Bay of Bengal lies at a distance 3.9 km in Eastern direction Muttakadu Backwaters lies at 2.5 km in Eastern Direction, Ottiambakkam Lake lies at a distance 2 km in Southwestern direction, Bay of Bengal lies at a distance 3.9 km in Eastern direction 5. State, National boundaries No Routes or facilities used by the Yes The project site is located nearer to public for access to recreation or other tourist, pilgrim areas Semmencheri. It serves as a residential and Educational hub for suburbs in the south of Chennai. A number of information technology companies are already based in Semmencheri. 7. Defense installations No Densely populated or built-up area Yes Semmencheri 9. Areas occupied by sensitive man-made land uses (hospitals, schools, places of worship, community facilities) 10. Areas containing important, high quality or scarce resources (Groundwater / surface water resources, forestry, agriculture, fisheries, tourism, minerals) 11. Areas already subjected to pollution or environmental damage. (where existing legal standards are exceeded) Yes The surrounding area has few sensitive manmade land uses such as Schools, Colleges and Residential Complexes. But the effect on these areas will be negligible / minimal. No -- No 12. Areas susceptible to natural No -- Page _ 14

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19 June 2015 FORM 1A FORM 1A Residential Development At S.No: 163/1, 163/2,164/2, Thalambur village, Thiruporur Taluk, Kanchipuram District. Project Proponent: M/s Casa Grande Private Limited. Prepared By: EQMS India Pvt. Ltd. & Ecotech Labs Pvt. Ltd. QCI (NABET)/MOEF ACCREDITED CONSULTANT , Rishabh Corporate Towers, Plot No. 16, Community Centre Karkardooma, Delhi NABL Accreditated No.4, Manjolai 1st Main Road, Ekkaduthangal, Guindy, Chennai

20 Residential Development Thalambur village, Thiruporur Taluk, Kanchipuram District FORM 1A SI.NO. DESCRIPTION CONTENTS PAGE NO. 1. Land Environment 1 2. Water Environment 3 3. Vegetation 5 4. Fauna 6 5. Air Environment 6 6. Aesthetics 8 7. Socio-Economic Aspects 8 8. Building Materials 9 9. Energy Conservation 11 M/s Casa Grande Private Limited

21 Form IA for Residential Development M/s. Casa Grande Private Limited I. LAND ENVIRONMENT FORM IA (Checklist of Environmental Impacts) S. No. Information/Checklist confirmation 1.1 Will the existing land use get significantly altered from the project that is not constant with the surrounding? (Proposed land use must conform to the approved Master Plan / Development Plan of the area. Change of land use if any and the statutory approval from the competent authority are submitted). Attach maps of (i) Site Location; (ii) Surrounding features of the proposed site (within 500 meters) and (iii) the site (indicating levels & contours) to appropriate scales. If not available attach only conceptual plan. 1.2 List out all the major project requirements in terms of the land area, built up area, water, power requirement, community facilities, parking needs etc. 1.3 What are the likely impacts of the proposed activity on the existing facilities adjacent to the proposed sites? (Such as open spaces, community facilities, details of the existing land use, disturbance to the local ecology). 1.4 Will there be any significant land disturbance resulting in erosion, Details thereof (with approximate quantities /rates, wherever possible) with sources of information data Project site comes under Mixed Residential use Zone. Currently project site is an open land with no development or vegetation on it. Project development will lead to generation of paved & green areas at project site. Documentary evidence for land use classification and land ownership is enclosed as Annexure IV and V. Project site is surrounded by various residential colonies/areas. Project site is accessible and is well connected via network of rail & road. The proposed Residential development is located in Thalambur village, Thiruporur Taluk, and Kanchipuram District. Google image showing location of project site & its surroundings within 500 m, 2 km and 10 km are attached as Annexure II (a, b &c) respectively. Site plan for the project is attached as Annexure III. Contour plan is enclosed as Annexure XIV. Total land area: Sqm Total built-up area: Sqm Total Water requirement: 272 KLD Fresh water requirement : 179 KLD Power requirement : 2750 KVA Parking Facility : 440 ECS Due to the construction activity, impacts such as air and noise pollution, wastewater generation & disposal and solid waste disposal, are envisaged, but with the efficient implementation of the proposed Environment Management Plan (EMP) adverse impacts will be minimized. Based on the type of soil and contour of the surface there won t be any erosion, subsidence or Page_ 1

22 Form IA for Residential Development M/s. Casa Grande Private Limited subsidence & instability? (Details of soil type, slope analysis, vulnerability to subsidence, seismicity etc may be given). 1.5 Will the proposal involve alternation of natural drainage systems? (Give details on a contour map showing the natural drainage near the proposed project site) 1.6 What are the quantities of earthwork involved in the construction activity cutting, filling, reclamation etc. (Give details of quantities of earthwork transport of fill materials from outside the site etc.) 1.7 Give details regarding water supply, waste handling etc during the construction period. 1.8 Will the low lying areas get altered? (Provide details of how low lying area getting modified from the proposed activity) 1.9 Whether construction debris & waste during construction cause health hazard? (Give quantities of various types of wastes generated during construction including the construction labour and the means of disposal) instability. No significant threat of erosion, subsidence or instability is anticipated. The project site falls under Zone-III of the seismic category in India and hence the vulnerability to earthquake is not so significant. The project does not intersect any natural drainage route. The contour plan of the project site is enclosed as Annexure - XIV. Excavation will be carried out for foundation of buildings. The excavated soil will be used in backfilling and other area development activities. Water Supply The water requirement during the construction phase of the project will be KLD. It will be sourced through tankers. Waste Handling The wastes during the construction phase comprises of the wastes generated by the workers as a result of the construction activity. The wastes generated by the workers will be treated and disposed of by providing temporary septic tanks. The construction debris will be used for the formation of roads within the development. There are no low-lying areas within the site as well as in the surroundings. The generation of construction wastes will be about kg/m 2 of construction area. These will be used for the formation of roads within the premises. The liquid wastes (sewage) generated by the workers will be treated and disposed of by Page_ 2

23 Form IA for Residential Development M/s. Casa Grande Private Limited II. WATER ENVIRONMENT S. No. Information/Checklist confirmation 2.1 Give the total quantity of water requirement for the proposed project with the breakup of requirements for various uses. How will the water requirements met? State the sources & quantities and furnish a water balance statement. 2.2 What is the capacity (dependable flow or yield) of the proposed source of water? 2.3 What is the quality of water required, in case, the supply is not from a municipal source? (Provide physical, chemical, biological characteristics with class of water quality) 2.4 How much of the water requirement can be met from the recycling of treated wastewater? (Give the details of quantities, sources and usages) 2.5 Will there be diversion of water from other users? (Please assess the impacts of the project on other existing uses and quantities of consumption) providing temporary septic tanks. Therefore no significant health hazard is observed. Details thereof (with approximate quantities /rates, wherever possible) with sources of information data S. Description Quantity Source of No. Supply I Construction Private Tankers phase KLD II Operational phase a Fresh Water Requirement 179 KLD Ground water b Recycled Water Requirement Flushing requirement Gardening requirement 93 KLD 55 KLD Treated STP Water The Source of water is Ground water. The required fresh water is 179 KLD. Ground water will be the source of water. Physiochemical testing of the ground water has been done and the monitoring report is attached as Annexure XII. The wastewater generation from the project is estimated to be about 236 KLD. After treatment 224 KLD of wastewater will be available for reusing, for flushing requirement and gardening purposes and excess treated wastewater will be disposed to local body for road side plantation and Public parks. No, there will not be any diversion of water from other users. The area is mostly of newly developed area, extraction of 179 KLD of fresh water will be done, adequate rainwater harvesting facilities has been proposed in order reduce the impact of ground water extraction. 18 Nos. of rain water harvesting pits have been proposed to harvest the rain water and recharge into the ground. Page_ 3

24 Form IA for Residential Development M/s. Casa Grande Private Limited 2.6 What is the incremental pollution load from wastewater generated from the proposed activity? (Give details of the quantities and composition of wastewater generated from the proposed activity) 2.7 Give details of the water requirements met from water harvesting? Furnish details of the facilities created. 2.8 What would be the impact of the land use changes occurring due to the proposed project on the runoff characteristics (quantitative as well as qualitative) of the area in the post construction phase on a longterm basis? Would it aggravate the problems of flooding or water logging in any way? 2.9 What are the impacts of the proposal on the ground water? (Will there be tapping of ground water: give the details of ground water table, recharging capacity, and approvals obtained from competent authority, if any) 2.10 What precautions/measures are taken to prevent the run-off from construction activities polluting land & aquifers? (Give details of quantities and the measures taken to avoid the adverse impacts) 2.11 How is the storm water from within the site managed? (State the provisions made to avoid flooding of the area, details of The wastewater generation from the project is estimated to be about 236 KLD. During operational phase the sewage generated will be treated in the proposed STP of 250 KLD. The Quality of wastewater generated from the proposed development will be: ph ( ), BOD ( mg/l), COD ( mg/l), SS (150 mg/l), The rain water from the project site is proposed to be collected and stored in a storm water collection sump. Total run off/hr is cu.m/hr. Total number of pits proposed is 18 nos and are designed as per peak hourly rainfall of Chennai to cater maximum possible load. The rain water from the roads/pavements and landscape are also proposed to be collected in addition to roof top and recharged through recharge pits proposed along the boundary. The runoff will increase due to the proposed residential development. Proper storm water storage sumps, drains are designed for the collection and recharge of rainwater. The excess runoff will flow to the existing storm water network adjacent to the site. Hence, no water logging problems anticipated. Extraction of ground water is envisaged. The daily fresh water requirement is 179 KLD. Rainwater harvesting measures proposed will mitigate the impact on groundwater. Construction area will be kept clean and maintained without contamination, thereby avoiding pollution of the surface runoff during construction phase. Suitable drains as per the prevailing contour of the plot will be developed and the runoff will be allowed to flow through the existing storm water drains. Storm water drains within the site are designed based on the average intensity of rainfall in that area. Further storm water collection and storage sumps have been planned to store part of the runoff during Page_ 4

25 Form IA for Residential Development M/s. Casa Grande Private Limited the drainage facilities provided with a site layout indication contour levels) 2.12 Will the deployment of construction laborers particularly in the peak period lead to unsanitary conditions around the project site (Justify with proper explanation) 2.13 What on-site facilities are provided for the collection, treatment & safe disposal of sewage? Give details of the quantities of wastewater generation, treatment capacities with technology & facilities for recycling and disposal ) 2.14 Give details of dual plumbing system if treated waste used is used for flushing of toilets or any other use. rains. Local laborers from nearby areas will be employed for the project work and there is no labor camp proposed inside the project site. Furthermore proper sanitary facilities like temporary toilets and wash area will be provided to laborers at the construction site. Temporary toilets will be provided during construction phase. The sewage generated will be disposed off through a septic tank arrangement. The wastewater generated during operation period will be treated with proposed STP, the treatment plant capacity, technology and design details is described in Conceptual plan enclosed along with this form, for recycling the treated wastewater dual plumbing system is proposed for flushing and gardening line. Dual Plumbing for Toilet flushing and gardening is proposed. III. VEGETATION S. No. Information/Checklist confirmation 3.1 Is there any threat of the project to the biodiversity? (Give a description of the local ecosystem with its unique features, if any) 3.2 Will the construction involve extensive clearing or modification of vegetation? (Provided a detailed account of the trees & vegetation affected by the project) Details thereof (with approximate quantities /rates, wherever possible) with sources of information data There is no threat to the biodiversity due to the proposed development. No sensitive species are prevailing at the project site. The impact on environment during the construction as well as during operation, will be limited to project premises, hence no impact is envisaged on the surrounding ecological environment. There will not be clearing of vegetation since the site is devoid of any greenery. 3.3 What are the measures proposed to There will not be any kind of impact due to this Page_ 5

26 Form IA for Residential Development M/s. Casa Grande Private Limited be taken to minimize the likely impacts on important site features (Give details of proposal for tree plantation, landscaping, creation of water bodies etc along with a layout plan to an appropriate scale) IV. FAUNA S. Information/Checklist No. confirmation 4.1 Is there likely to be any displacement of fauna-both terrestrial and aquatic or creation of barriers for their movement? Provided the details. 4.2 Any direct or indirect impacts on the fauna of the area? Provided details. project on site. Within the proposed project site, green area of Sqm is designated for development. Various species of plants are proposed to be planted to create a clean and healthy environment. Mix of native and ornamental species will be planted within the planned green area. Details thereof (with approximate quantities /rates, wherever possible) with sources of information data Landscaping and greenbelt planned in the project site will have direct positive impact on the fauna of that area, as the plants in the greenbelt will provide shelter to them. Hence the displacement and barrier for movement of fauna is not envisaged due to the project. Landscaping and greenbelt planned in the project site will have direct positive impact, on the fauna of that area, as the plants in the greenbelt will provide shelter to them. V. AIR ENVIRONMENT S. Information/Checklist No. confirmation 5.1 Will the project increase atmospheric concentration of gases & result in heat islands? (Give details of background air quality levels with predicted values based on dispersion models taking into account the increased traffic generation as a result of the proposed construction) 5.2 What are the impacts on generation of dust, smoke, odorous fumes or other hazardous gases? Give details in relation to all the meteorological parameters. Details thereof (with approximate quantities /rates, wherever possible) with sources of information data As the proposed project consists of a residential building, it has free access from the surroundings. Hence there will not be any increase in atmospheric concentration of gases and formation of heat islands. Dust generation is anticipated to occur while loading & unloading of construction material, debris & construction activities and vehicular movement during construction phase. Dust suppression measures will be adopted during construction period. During operation phase dust generation will result from vehicular movement. Page_ 6

27 Form IA for Residential Development M/s. Casa Grande Private Limited 5.3 Will the proposal create shortage of parking space for vehicles? Furnish details of the present level of transport infrastructure and measures proposed for improvement including the traffic management at the entry & exit to the project site. 5.4 Provide details of the movement patterns with internal roads, bicycle tracks, pedestrian pathways, footpaths etc, with areas under the category. 5.5 Will there be significant increase in traffic noise & vibrations? Give details of the sources and the measures proposed for mitigation Dust generation will be controlled by taking following measures. Covering the scaffolding Clearance of grass or weeds only from activity area Water sprinkling on unpaved surfaces/open areas Washing wheels of vehicles Storage of construction material, excavated soil & debris in covered sheds Regular cleaning of site Development of green belt during operation phase No open land will be left without vegetation cover & roads will be paved. Gaseous emissions like SOx, NOx, CO, PM10 & PM2.5 will be generated due to operation of DG sets. Stack of appropriate height (as per CCB norms) will be provided for dispersion of the expected pollutants. Ambient air quality testing has been done at the project site and the report is attached as Annexure - XI. Post project monitoring of air quality will also be carried out to check the incremental pollution load due to the project. Sufficient parking space is provided within the project area. Internal traffic circulation will be smooth and there will not be any idle running of vehicles due to traffic. Roads, pedestrians and footpaths are separately earmarked. Parking provided: Parking Facility : 440 ECS Internal roads will run all along the site and the pedestrian pathways will be provided on the either sides of the road. In construction phase, the noise generated from the construction equipments will be reduced through proper maintenance of all the equipments. Noise control systems such as equipment Page_ 7

28 Form IA for Residential Development M/s. Casa Grande Private Limited of the above. foundation pads, dampeners, silencers and acoustic enclosures will be used for individual units. In Operation phase, the major source of noise pollution is from vehicular transportation and generator sets. But Noise and vibrations are expected to be minimal due to the distributed traffic pattern and by the development of the green cover all along the internal roads. Hence there is no major impact envisaged. 5.6 What will be the impact of DG sets & other equipment on noise levels & vibration in & ambient air quality around the project site? Provided details. VI. AESTHETICS DG sets with acoustic enclosures will be used during construction as well as operational phases of the project. The DG sets will be operated only for short durations in case of power cuts and the flue gases will be let outside through the stacks with adequate height as prescribed by CPCB. Use of low sulphur HSD will reduce the impact on the ambient air quality. S. No. Information/Checklist confirmation 6.1 Will the proposed constructions in any way results in the obstruction of a view, scenic amenity or landscapes? Are these considerations taken into account by the proponents? 6.2 Will there be any adverse impacts from new constructions on the existing structures? What are the considerations taken into account? 6.3 Whether there are any local considerations of urban form & urban design influencing the design criteria? They may be explicitly spelt out. 6.4 Are there any anthropological or archaeological sites or artifacts nearby? State if any other significant features in the vicinity Details thereof (with approximate quantities /rates, wherever possible) with sources of information data No, the proposed construction will not obstruct any view, scenic amenities or landscapes. No, there will not be any adverse impact due to this project on the existing structures. No, the proposed project is developed in an area earmarked by DTCP as Mixed Residential Use zone. There are no anthropological or archaeological sites or artifacts nearby. Page_ 8

29 Form IA for Residential Development M/s. Casa Grande Private Limited of the proposed site have been considered. VII. SOCIO-ECONOMIC ASPECTS S. No. Information/Checklist confirmation 7.1 Will the proposal results in any changes to the demographic structure of local population? Provide the details. 7.2 Give details of the existing social infrastructure around the proposed project. 7.3 Will the project cause adverse effects on local communities, disturbance to sacred sites or other cultural values? What are the safeguards proposed? VIII. BUILDING MATERIALS S. Information/Checklist No. confirmation 8.1 May involve the use of building materials with high-embodied energy. Are the construction materials produced with energy efficient processes? (Give details of energy conservation measures in the selection of buildings materials and their energy efficiency) Details thereof (with approximate quantities /rates, wherever possible) with sources of information data No, it is a residential project. Development of the housing facility may result in shifting of the population to the study area from nearby areas but no significant changes in demographic structure is anticipated during operation phase The project site is located nearer to Semmencheri. Existing Infrastructure around the Project site are as follows: Colleges: 1. Sathyabama University (1 km, N) 2. St. Joseph College of Engineering (0.5 km, N) 3. Jeppiar Engineering College (0.7 km, NE) Schools: 1. PSBB Millennium School (1.5 km, NNW) No, the project will not cause any adverse effect to society. All construction activities will be confined within the project site. Transportation of the materials and waste will be done in non-peak hours so no traffic congestion will occur. A project will provide comfortable living facility to the people in affordable range. Details thereof (with approximate quantities /rates, wherever possible) with sources of information data Low embodied energy construction materials like fly ash etc will be explored. Possibility of use of fly-ash bricks will be explored and will be used to the extent possible. Hollow bricks will also be used. Cement mix with fly ash will be used for construction purpose. Page_ 9

30 Form IA for Residential Development M/s. Casa Grande Private Limited 8.2 Transport and handling of materials during construction may result in pollution, noise & public nuisance. What measures are taken to minimize the impacts? 8.3 Are recycled materials used in roads and structures? State extent of savings achieved 8.4 Give details of the methods of collection, segregation & disposal of the garbage generated during the operation phases of the project. Mitigation Measures during Construction Stage: Air Pollution Various construction activities related to handling of loose material are likely to cause generation of fugitive dust affecting the air quality of the surrounding area of the project site. To minimize such impact following measures shall be taken: All the loose materials, either stacked or transported, will be provided with suitable covering such as tarpaulin, etc. Water sprinkling will be done at the location where dust generation is anticipated. To minimize the occupational health hazard, proper personal protective equipments, i.e. mask, goggles, helmets and safety shoes will be provided to the workers who are engaged in construction activity. Noise Pollution During the construction stage, expected noise levels will be in the range of db (A) which will decrease with increase in distance as per the Inverse Square Law. Administrative as well as engineering control of noise will be implemented. Isolation of noise generation sources and temporal differentiation of noise generating activities will ensure minimum noise at receiver s end. To prevent any occupational hazard, ear muffler / plug will be given to the workers working around or operating plant and machinery emitting higher noise levels than the permissible limits. There will be no construction during night hours. Careful planning of machinery operation and scheduling of operations will be done to minimise such impact. Construction debris generated will be recycled to the extent possible in forming roads within the premises. The solid waste will comprise compostable waste e.g. domestic waste, food waste, horticultural waste etc. and recyclable waste, like plastics, paper etc. Compostable Waste:0.629 Tons/day Recyclable Waste: Tons/day Page_ 10

31 Form IA for Residential Development M/s. Casa Grande Private Limited Inert Waste: Tons/day STP Sludge : 12 kg/day Solid Waste Management: In the building complex, private sweepers would be engaged for handling domestic waste and appropriate site will be identified for keeping bin / container for the collection of waste. Adequate number of collection bins separately for compostable, inert and recyclable waste and nonbiodegradable waste will be provided as per the Municipal Solid Waste (Management and Handling) Rule, Separate colored bins will be provided for biodegradable and nonbiodegradable wastes. All the collection bins shall be properly maintained and cleaned on regular basis. Waste from such bins shall be collected separately on daily basis and taken to a centralized storage facility. Compostable waste will be treated in organic waste convertor, recyclable waste will be handed over to authorized recyclers and inert waste will be disposed off through agency responsible for waste management in the area. Horticultural wastes: Leaves, grass and vegetative residues shall be collected at the secured location such that it will not hinder daily activity schedule or washed away by the surface run-off causing choking of drains, etc. and will be separately be composted along with compostable fraction of waste. IX. ENERGY CONSERVATION S. Information /Checklist No. confirmation 9.1 Give details of the power requirements, sources of supply, backup source etc. What is the energy consumption assumed per square foot of built-up areas? Details thereof (with approximate quantities /rates, wherever possible) with sources of information data The power would be sourced from TNEB from nearby sub-station. The estimated power requirement for the project is about 2750 KVA during operational phase. Power back up is proposed by using DG sets. The energy Page_ 11

32 Form IA for Residential Development M/s. Casa Grande Private Limited How have you tried to minimize energy consumption? 9.2 What type of, and capacity of, power back-up you plan to provide? 9.3 What are the characteristics of the glass you plan to use? Provide specifications of its characteristics related to both short wave and long wave radiation? 9.4 What passive solar architectural features are being used in the building? Illustrate the applications made in the proposed project. 9.5 Does the layout of streets & buildings maximize the potential for solar energy devices? Have you considered the use of street lighting, emergency lighting and solar hot water systems for use in the building complex? 9.6 Is shading effectively used to reduce cooling/heating loads? What principles have been used to maximize the shading of walls on the East and the West and the Roof? How much energy saving has been effected? 9.7 Do the structures use energy efficient space conditioning, lighting and mechanical systems? Provide technical details. Provide details of the transformers the motor efficiencies, lighting intensity and air-conditioning load assumptions? Are you using CFC and HCFC free chillers? Provide specifications. 9.8 What are the likely effects of the buildings activity in altering the micro-climates? Provide a self- consumption will be minimized by using energy efficient lamps, and by adopting natural lightings and ventilations to the possible extent. Power back up is proposed by using DG sets. The proposed DG sets are 1 No. of 180 KVA The thickness of glass is 4-6 mm to keep the U- value of 1.08 W/m 2 C. Considering the site and solar analysis each block was designed individually. The use of solar passive measures includes the design of fenestrations in such a way that sufficient day-lighting is allowed inside the building. Solar energy will be harnessed to meet various energy requirements of the project such as: LED based Solar street lights. Solar water heaters Solar powered LED signage boards. Sunshades are proposed to reduce heat ingress into the buildings. Sun path studies led to the orientation and position of each block suited to best protect itself from the harsh sun while utilizing the natural wind direction to help facilitate cross ventilation Use of CFLs & LED s to reduce the lighting power density. Energy efficient pumps and drives are proposed. As per the design of the proposed project, Sufficient Cross ventilation is provided. Hence there will not be any change in microclimate due to Page_ 12

33 Form IA for Residential Development M/s. Casa Grande Private Limited assessment on the likely impacts of the proposed construction on creation of heat island & inversion effects? 9.9 What are the thermal characteristics of the building envelope? (a) roof: (b) external walls: and (c) fenestration? Give details of the materials used the U-values or the R-values of the individual components What precaution & safety measures are proposed against fire hazards? Furnish details of emergency plans If you are using glass as wall material provides details and specifications including emissive and thermal characteristics What is the rate of air infiltration into the building? Provide details of how you are mitigating the effects of infiltration To what extent the nonconventional energy technologies are utilized in the overall energy consumption? Provide details of the renewable energy technologies used. the proposed project. The U-values of the roof, external wall and fenestration of the building will meet the requirements as specified in the Energy Conservation Building Code (ECBC). Component Permissible U- Value as per ECBC (W/m 2 C) Resultant Value due to the proposed configuration (W/m 2 C) Roof (RCC slab with clay tile) Wall Constructed using M15 grade concrete solid blocks, Fenestration (Plain glass with sun colored film / colored glass) Fire alarm and fire fighting system will be installed inside the building. Portable fire extinguishers are also installed. Fire protection and safety measures proposed are expected to mitigate fire and explosion hazards. Fire detection and fighting provisions will be available as per specified norms. No, glass is not used as wall material. The proposed project is residential building and hence there is any forced ventilation is used. The residential houses provided with adequate windows which is almost in open condition for free movement of fresh air inside the buildings. Solar powered street lighting will be partly provided. The layout of streets & buildings will maximize the potential for solar energy devices. Page_ 13

34 June 2015 CONCEPTUAL CONCEPTUAL PLAN PLAN Residential Development At S.No: 163/1, 163/2,164/2, Thalambur village, Thiruporur Taluk, Kanchipuram District. Project Proponent: M/s Casa Grande Private Limited. Prepared By: EQMS India Pvt. Ltd. & Ecotech Labs Pvt. Ltd. QCI (NABET)/MOEF ACCREDITED CONSULTANT , Rishabh Corporate Towers, Plot No. 16, Community Centre Karkardooma, Delhi NABL Accreditated No.4, Manjolai 1st Main Road, Ekkaduthangal, Guindy, Chennai

35 Residential Development Thalambur village, Thiruporur Taluk, Kanchipuram District CONCEPTUAL PLAN CONTENTS SI. NO. DESCRIPTION PAGE NO. 1.0 Introduction General Site Description Project Components Vehicle Parking Facilities Power Requirement Basement Environmental Status Environmental Components Water Requirement Solid Waste Generation Environmental Impact Assessment Introduction Identification of Impacts Impact Evaluation Impact on Air Environment Impact On Ambient Noise Impact on Land Environment Impact on Water Resources Impact due to waste Disposal Impact on Ecological Resources Impact on Traffic levels Impact on Socio Economic Environment 21 M/s Casa Grande Private Limited

36 Residential Development Thalambur village, Thiruporur Taluk, Kanchipuram District CONCEPTUAL PLAN CONTENTS 3.0 Environmental Management Plan General Air Pollution Control and Management Noise Control and Management Solid Waste Management Water and Waste water Management Storm Water Management Landscape and Ecological Management Socio Economic Development Plan Energy Conservation Soil Environment Fire Protection Measures Risk Assessment, Disaster Management And Safety 37 Measures 3.13 Environment Monitoring Plan For Construction And Operation Phase 41 M/s Casa Grande Private Limited

37 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited Conceptual Plan 1.0 INTRODUCTION 1.1 GENERAL M/s. Casa Grande Private Limited proposes to construct its residential complex in Thazambur village, Thiruporur Taluk, Kanchipuram District in the state of Tamil Nadu. Total land area available is sqm. The total built-up area is sqm. As per EIA notification, 2006, any new or modernization building and construction project with built-up area more than 20,000 sq m falls under activity 8 a and category B and thus requires to obtain environment clearance from concerned authority prior start of the construction. 1.2 SITE DESCRITPION The project site is located 12 51'53.32"N latitude and 80 12'49.86"E longitude. The site is located in Thazambur village, Thiruporur Taluk, and Kanchipuram District. No eco-sensitive zone is present within 2 km area of the project site. The environmental settings of the site are given below in Table 1. Table 1: Details of Environmental Settings S. No. Particulars Details 1. Latitude 12 51'53.32"N 2. Longitude 80 12'49.86"E 3. Total Plot Area sqm 5. Nearest Highway SH 49 A ECR Link Road 6. Nearest Road Jagannath Meadows Road (280 m, East) 7. Nearest Railway Station Tambaram Station (12 km, WSW) 8. Nearest Airport Chennai International airport (14 km, NNW) 9. Nearest Harbour Chennai (27 km, NNE) 10. Nearest Town Semmancheri (2.0 km, ESE) 11. Nearest City Chennai (23.0 km, N) Page _ 1

38 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited 1.3 PROJECT COMPONENTS The proposal involves construction of villas with a total built up area of sqm. The area split up and space utilization details are given below, the project consists of villas of type A1, A2, A3,B1, B2, B3, B4, B5 and S (North and South), detailed area break up is given in below Table 2. Table 2: Land Use Break up Details S. No. Particulars Area (m 2 ) 1. Total Plot Area Permissible ground Coverage (70% of plot area) Proposed Ground Coverage (36.50% of plot area) Permissible FSI (@1.5 of plot area) Proposed FSI (@0.81 of plot area) Non-FSI Area at Floors Surface or open Parking Area (1.43% of plot area) STP, Solid Waste Disposal and Other Utilities Area (1.08%) Built-up Area (5 + 6) Roads and Pavements Area Greenbelt Area Total Built up Area and Details on Housing Units: Built up area is calculated as per the latest Circular of MoEF, Dated: 2" April Built-up area is defined as ''The built-up or covered area on all the floors put together including basement(s) and other service areas, which are proposed in the building / construction project" as per the latest Circular of MoEF, Dated: 2" April Detailed built-up area calculations are given in Table 3 & 4 below Table 3: Built-up Area Calculations Name of the Block/Bui lding No. Of levels /Floors Built-up Area (FSI Area) Sqm Built-up Area Non FSI Area Sqm (stilts) Built-up Area Parking Area & Others if any (Covered Built Up Area) Total Built Up Area Type A1 Ground Floor First Floor Total x101 units = Page _ 2

39 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited Type A2 Ground Floor First Floor Total x 87 units = Type A3 Ground Floor First Floor Total x13 units = Type B1 Ground Floor First Floor Total x37 = Type B2 Ground Floor First Floor Total x32 = Type B3 Ground Floor First Floor Total x1 units = Type B4 Ground Floor First Floor Total x1 units = Type B5 Ground Floor S North First Floor Total x1 units = Ground Floor First Floor S South Club House Total Ground Floor First Floor Total Ground Floor First Floor Second Floor Total Page _ 3

40 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited Total Built up Area Table 4: Summary of Built up Area Blocks FSI Area Non FSI Area Total Built up Area Total No of Units Type A Type A Type A Type B Type B Type B Type B Type B S North S South Club House Total Total Number of Housing units Total Built up Area = 393 units = sqm 1.4 VEHICLE PARKING FACILITIES Parking will be provided as per the building bye laws of CMDA. Details of parking required and to be provided is given below in Table 5 & 6. Table 5: Parking Required Parking calculations as per CMDA Regulation Dwelling Units No. of Parking Spaces as per CMDA norms for Panchayat areas Dwelling units provided No. of car required No. of two wheeler required Floor area upto 50 sqm. Nil Floor area above 1 Two Wheeler Space for 50 sqm and below every dwelling units 75 sqm Floor Area above 75 Sqm & upto 100 Sqm 1 Car Space for every two dwelling units & 1 Two Wheeler Space for every Page _ 4

41 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited Floor Area above 100 Sqm Visitor's parking 10% dwelling units 1 car Space for every 100 Sqm Total Number of Parking Required Table 6: Parking Provided Details 1)Total number of car parks in Ground level (Surface parking) No. of Car parks No of two wheeler parks Area allotted for parking in (SQM) One car Parking is equal to two 2- wheeler parking.. Car parking required is ( /2), i.e. 366 ECS. Parking provided is (370 ECS + 140/2 ECS) 440 ECS against requirement of 366 ECS. 1.4 POWER REQUIREMENT The power requirement during operation is about 2750 KVA and it will be sourced from the nearby TNEB grid DG sets of capacity 180 kva (180 X 1) will be provided to cater essential load requirement during power failure. 1.5 BASELINE ENVIRONMENTAL STATUS Baseline studies are carried out to provide a detailed description of the existing ecosystem, landscape, infrastructure, cultural heritage and urban environment. A baseline study describes the initial state of the environment within the selected boundaries of the study area. The baseline data has been generated and secondary data collected from various Government and Semi-Government organizations. The details about the existing environmental values are projected based on the volume of the assessment accomplished during the period. The various environmental attributes were divided into primary and secondary studies. Primary attributes such as air environment, water, soil, noise & biological environment were being assessed by conducting field studies, on-site monitoring. The baseline studies started with site visits and survey in the study area for fixing the monitoring locations for the primary data generation. Page _ 5

42 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited 1.6 ENVIRONMENTAL COMPONENTS The baseline environmental studies helped in assessing the existing environmental conditions of the study area and identifying the critical environmental attributes. This will facilitate the comparison of the resultant environmental conditions in the post study scenario with the prestudy conditions and will help in checking the environmental pollution. The baseline environmental data for Ambient Air, Noise, Soil and Ground water is enclosed separately in Annexure. 1.7 WATER REQUIREMENT The total water requirement during operation is 328 KLD. Source of water is Ground water. The wastewater generation from the project is estimated to be about 236 KLD, which will be treated in proposed sewage treatment plant and will be recycled for flushing, gardening and the remaining will be disposed to local body for roadside plantation and public parks. The estimation of water requirement and the water balance chart is shown in Table 7, 8 and 9. Table 7: Water Requirement and Water Balance - Occupancy Load Calculation S.No Project Components Total Apartments Occupancy load 1 Residential units Visitors - Residential 3 Maintenance Staff Residents Club House 10% of Resident population 5% of residential population 5% of Club House Population 196 Total Occupancy Page _ 6

43 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited Table 8: Water Requirement Calculation Project Components Occupancy load Total Water Requirement (lpd) Domestic water Requirement (lpd) Recycled water Requirement (lpd) Residential occupancy 1965 Visitors 196 Maintenance Staff 98 Club House Staffs ( 135lpcd) (90 lpcd) (45 lpcd) ( 15 lpcd) (5 lpcd) (10 lpcd) (45 lpcd) (15 lpcd) (30 lpcd) (45 lpcd) (15 lpcd) (30 lpcd) Total Water requirement for Gardening purposes based on the Gardening area sqm (@ 3.5 litres/sqm) Total water requirement KLD KLD Table 9: Summary of Total Water Balance KLD S. No. Details Quantity (KLD) 1 Total Water Requirement Fresh water requirement for domestic purposes Treated water requirement for Flushing purposes 93 4 Treated water requirement for Gardening purposes 55 5 Waste Water Generated (80% of domestic +100% of flushing water) STP Capacity Treated Water 224 Page _ 7

44 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited Water balance during dry season Daily Fresh Water Requirement 179 KLD Domestic (NF) 179 KLD 143 KLD (80%) 236 KLD STP 250 KLD Flushing 93 KLD 93 KLD 93 KLD 224 KLD (95%) Gardening 55 KLD 55 KLD 76 KLD Local Body for Gardening 76 KLD Water balance during monsoon Season Daily Fresh Water Requirement 179 KLD Domestic (NF) 179 KLD 143 KLD (80%) 236 KLD STP 250 KLD 93 KLD 224 KLD (95%) Flushing 93 KLD 93 KLD 131 KLD Local Body for Gardening 131 KLD Page _ 8

45 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited 1.8 SOLID WASTE GENERATION The solid waste from the proposed development will comprises of compostable wastes like domestic food waste, horticultural waste and recyclable waste like plastics, paper etc. As per the manual on municipal solid waste prescribed by Central Public Health and Environmental Engineering Organization (CPHEEO), the quantity of solid waste generated va ries between kg / capita / day. Quantity of solid waste generated from the proposed residential building is given below in Table 10 Table 10: Quantity of solid waste generated from the proposed residential building S.No Project Components Occupancy load Per Capita generation Total solid Waste generation Kg/day 1 Residential occupancy Visitors Maintenance Staff Club House Staffs STP Sludge 12 Total Waste Generation in Kg/day Source: Central Public Health and Environmental Engineering Organization (CPHEEO), Per capita waste generation for residential are 0.5 kg / capita / day for staff population it is 0.25 kg/capita/day and for visitors it is 0.15 kg/day. Table 11: Waste Composition S.No 1 2 Description Compostable Waste (@60% of waste generated) Recyclable waste (@30% of waste generated Quantity (Tons/day) Mode of treatment / disposal Will be treated in organic waste convertor within the project site. Manure generated will be used for landscaping purpose within project site Waste will be sold to authorized recyclers Page _ 9

46 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited 3 Inert Waste (@10% of waste generated) STP Sludge 12 kg/day Will be sent for land filling through authorized vendor Will be used as a Manure for greenbelt development Wastes generated from the households will be segregated into compostable waste, recyclable and inert waste in the source itself (by the occupants) in separate bins. Door to door waste collection system will be adopted. Compostable waste will be treated in organic waste convertor within the site. Manure generated will be used within the site for landscaping purpose. Recyclable fraction of waste will be sold to authorized vendors and inert waste will be send for land filling through authorized agency for waste collection in the area. Organic waste convertor of various makes like Excel, Nachiket Engineering, Earth Care equipments are available. These OWC reduce volume of waste fed by 80% and convert it into manure that can be used for landscaping purpose. This manure can be stored, packed, sold and used for landscaping. Apart from the municipal waste, E-waste comprising of rejected CFL, bulbs, laptops, TV sets, computers etc will be generated. This waste will be insignificant in initial stage. Room will be provided within project site for storing discarded electronics. These will be sold to authorized vendors on regular basis. Page _ 10

47 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited 2.0 ENVIRONMENTAL IMPACT ASSESSEMNT 2.1 INTRODUCTION This chapter presents the assessment of various impacts due to the proposed construction project in the study area. Generally, the environmental impacts can be categorized as either primary or secondary. Primary impacts are those, which are attributed directly by the project and secondary impacts are those, which are indirectly induced and typically include the changed patterns of social and economic activities by the proposed project. The Proposed construction project would create impact on the environment in two distinct phases: Impacts during the construction phase Impacts during the operation phase The construction and operational phase of the proposed construction project comprises of various activities each of which will have impact on some or other environmental parameters. Various impacts during the construction or operational phase and the environmental parameters have been studied to estimate the impacts on environment. The identification and details on impact of the project activity on each of the above environmental attributes are discussed below. 2.2 IDENTIFICATION OF IMPACTS Construction of residential complex is for the benefit of general population, however, like any other projects, it also has impacts on existing Environmental settings and if not properly evaluated and controlled, it may lead to imbalances. These could be reversible, irreversible, temporary or permanent. The identification of impacts is important as it leads to the other elements such as quantification and evaluation of impacts. Although a number of non-projects related impacts have been identified while describing the existing (baseline) environmental status, it is necessary at this stage to identify the types of the potential impacts which might be caused by the proposed development. Many techniques are available for identification of impacts. In case of this project, the "Matrix Method" was adopted, which involves an understanding of the cause-condition-effect relationship between an activity and environmental parameters. It is very useful as gross screening tool for impact identification method. This method has been basically advantageous in recognizing the series of impacts that could follow from the proposed activities. Page _ 11

48 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited The idea was to account for the project activity and identify the types of impacts that could initially occur. This process was repeated until all possible types of impacts were identified. With this method the potential impact of the proposed project has been identified. Table 12: Over view of potential impacts due to the proposed residential complex project Project activities Air quality Noise Level Ground Water Quality Ground Water Quantity Soil Stability/ Erosion Soil Quality Traffic Level Vegetation Socio Economic Site Clearance & Leveling Site excavation Foundation (Pile Foundation) Material Storage & Handling Generation and disposal of construction waste Movement of Vehicles Labour s Camp Occupancy Operation of DG Sets Sewage Generation & Discharge Rainwater Harvesting Solid waste Generation Gardening & Landscaping ST, -ve ST, -ve ST, -ve ST, -ve Construction Phase ST, -ve ST, - ST, - ve ve ST, -ve ST, -ve ST, -ve ST, -ve Operation Phase LT, -ve ST, - ve ST, - ve ST, -ve LT, - ve ST, - ve ST, +ve ST, +ve ST, +ve ST, -ve LT, +ve -ve -ve -ve LT, +ve LT, +ve LT, -ve LT, +ve LT, +ve LT, -ve LT, -ve LT, +ve LT, +ve LT, -ve LT, +ve LT, +ve Note: ST - Short Term Impact, LT - Long Term Impact, -ve - Negative Impact, +ve Positive Impact Page _ 12

49 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited 2.3 IMPACT EVALUATION Impact evaluation assesses the expected changes in the environment due to the proposed project. It is the tool for identifying the magnitude of impact and forms basis for the development of Environmental Management Plan. Weightage for each impact is given below. Evaluation of impacts considering both positive and negative effects on air, noise, land, water and socioeconomic environment during the construction and operation phase of the project is given in Table 13 and 14 respectively. TABLE 13: EVALUATION OF CONSTRUCTION PHASE IMPACT Environment al Parameter Project Activities CONSTRUCTION PHASE AIR ENVIRON MENT Impact Type Significant Non Significant Direct Indirect Short Term Long Term Unavoidable Irreversible Mitigation Required Weight age Site Clearance & Leveling Negative -4 Site excavation Negative -4 Foundation (Shallow Negative 0 Foundation) Material Storage & Handling Negative -4 Generation and disposal of construction Negative -4 waste Vehicular Movement Negative -4 Labour s Camp No Impact - Public Health & Safety Economic Activity No Impact No Impact - - NOISE ENVIRON MENT Site Clearance & Leveling Negative 0 Site excavation Negative -4 Foundation (Shallow Negative -4 Foundation) Material Storage & Handling Negative -1 Page _ 13

50 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited Generation and disposal of construction waste Vehicular Movement Labour s Camp Public Health & Safety No Impact Negative -1 No Impact No Impact Economic Activity No Impact - LAND ENVIRON MENT Site Clearance & Leveling Site excavation Foundation (Shallow Foundation) Material Storage & Handling Generation and disposal of construction waste Vehicular Movement Labour s Camp Public Health & Safety Economic Activity No Impact No Impact Negative -1 Negative -4 Negative -4 Negative -1 No Impact No Impact No Impact WATER ENVIRON MENT Site Clearance & Leveling Site excavation Foundation (Shallow Foundation) Material Storage & Handling Generation and disposal of construction waste Negative -2 No Impact No Impact Negative -4 Negative Page _ 14

51 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited Vehicular Negative 0 Movement Labour s Camp Negative -4 Public Health & Safety Economic Activity No Impact No Impact - - SOCIO ECONOMI C ENVIRON MENT Site Clearance & Leveling Negative -2 Site excavation Negative -2 Foundation (Shallow Negative -2 Foundation) Material Storage & Handling Negative 0 Generation and disposal of construction Negative -2 waste Vehicular Movement Negative -2 Labour s Camp Negative -2 Public Health & Safety Positive 6 Economic Activity Positive 6 TABLE 14: EVALUATION OF OPERATION PHASE IMPACT Environme ntal Parameter OPERATION PHASE AIR ENVIRON MENT Project Activities Occupancy Operation of DG Sets Sewage Generation & Discharge Rainwater Harvesting Solid waste Generation Gardening & Landscaping Impact Type No Impact Significant Non Significant Direct Indirect Short Term Long Term Unavoidable Irreversible Mitigation Required Weigh tage Negative -8 Negative 0 No Impact Negative -6 Positive Page _ 15

52 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited NOISE ENVIRON MENT Occupancy Operation of DG Sets Sewage Generation & Discharge Rainwater Harvesting Solid waste Generation Gardening & Landscaping No Impact Negative -8 No Impact No Impact No Impact Positive LAND ENVIRON MENT Occupancy Negative 0 Operation of DG Sets Negative 0 Sewage Generation & Negative -8 Discharge Rainwater Harvesting Positive 8 Solid waste Generation Negative -8 Gardening & Landscaping Positive 10 WATER ENVIRON MENT Occupancy Negative -8 Operation of DG Sets Negative -6 Sewage Generation & Negative -8 Discharge Rainwater Harvesting Positive 10 Solid waste Generation Negative 0 Gardening & Landscaping Positive 10 SOCIO ECONOMI C ENVIRON MENT Occupancy Positive 10 Operation of DG Sets Negative -6 Sewage Generation & Negative -6 Discharge Rainwater Harvesting Positive 8 Page _ 16

53 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited Solid waste Generation Gardening & Landscaping Negative -6 Positive IMPACT ON AIR ENVIRONMENT Construction Phase Impacts of construction activities on air quality are cause for concern mainly in the dry months due to dust particles. The main sources of emission during the construction period are the movement of equipment at site and dust emitted during the leveling, grading, earthworks, and other construction related activities. The dust emitted during the above mentioned activities depend upon the type of soil being excavated. However, the impact will be for short duration and confined locally to the construction site. The composition of dust in this kind of operation is, however, mostly inorganic and non-toxic in nature. The impact of such activities would be temporary and restricted to the construction phase. The impact will be confined within the project boundary and is expected to be negligible outside the plant boundaries. Proper upkeep and maintenance of vehicles, sprinkling of water on roads and construction site are some of the measures that would greatly reduce the impacts during the construction phase. Thus, it is inferred that no significant impacts are expected on the overall ambient air quality due to the proposed construction activities. Transportation and Storage of Construction Materials Transportation of heavy machinery and building materials implies heavy traffic on the roads leading to the site with possible negative impacts to the surrounding area (dust, spillage, emissions and noise). Transportation of construction materials as well as improper storage of building materials, especially gravel, sand and cement in the construction site will lead to inadvertent dispersal of materials during heavy rain or high wind during dry periods. Measures will be adopted for proper handling of construction materials to reduce the negative impact Operation Phase Ambient air quality at the proposed project site and its surroundings is monitored and values of the pollutants RPM, PM 2.5, NO x and SO 2 are within the limits of NAAQS, 2009 prescribed by the central pollution control board. There is no major pollutant envisaged from the proposed development. It is likely that the air quality may be affected slightly due to the emissions from the vehicular movement. The emission from DG sets will be very negligible since it will be used only during power cut in the necessary area. However in the case of DG sets the stack will be properly designed to Page _ 17

54 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited meet the stipulations of CPCB. These emissions will be insignificant and the environmental pollutant levels will be maintained within the prescribed limits. Hence there shall not be any adverse impact on the air environment around the proposed Residential Complex. 2.5 IMPACT ON AMBIENT NOISE Construction Phase During the construction noise levels will increase due to use of machinery and heavy vehicles in the project area. In terms of noise emission; demolition, excavation and construction work can be divided into two phases, namely (1) Demolition and Earthworks and (2) building works. Loading and unloading of construction materials, fabrication, handling of equipment and material, operation of power shovels etc. will be the major source of noise during the construction phase. Various construction activities will cause short-term noise impact in the immediate vicinity of the project site. The areas affected are those close to the site and hence the impacts are localized. At the peak of the construction, marginal increase in noise levels is expected to occur. The peak noise levels from continuous construction activity may be as high as db (A). The noise control measures during construction phase shall restrict the noise levels to lower levels. Hence the overall impact on the ambient noise levels will not be significant Operation Phase There will not be any major impact from noise. This is because no equipment or other infrastructure facility in the project generates noise more than db (A). However, the only noise generation source is the DG set. The promoters have decided to adopt adequate steps to maintain the noise levels within the prescribed limits. For the same all the DG facility will be equipped with acoustic enclosure. Apart from this honking will be prohibited at the site and speed limits will be restricted within the site. This will significantly help in controlling noise levels at the site. Further the green belt provided within the site will act as noise barrier between inside and outside environment. This will act as buffer and protects the site from high noise levels outside the site. Traffic Noise Traffic will increase during both construction and operation phase of the project. Vehicles associated with construction would generate intermittent noise throughout the vicinity of the proposed action. In the operation phase, vehicular parking is being provided in the basement, ground floor and first floor of the building where noise levels are expected to increase substantially during the peak hours due to starting, idling and roaring of vehicles. Page _ 18

55 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited 2.6 IMPACT ON LAND ENVIRONMENT No blasting will be done during construction phase of the project. The rehabilitation and resettlement issues are not involved in the project. Furthermore the existing environmental conditions of the project site reveal that the land is not contaminated or polluted. Top soil will be excavated upto 15 cm from the project site. It will be stored in covered area during construction phase and will be used for landscaping in operation phase within project site. The upper/top level of soil will be affected during construction phase but this will be limited to a portion of the project area. Also the impact due to exploitation of ground water is insignificant in the site due to the sourcing of water from other sources during the operation phases. Hence there will not be any adverse impact on the surrounding land use during the construction period as well as during the operation phase. 2.7 IMPACT ON WATER RESOURCES Construction Phase The required water quantity for construction will be utilized from the available resource in the project area. Impact on water quality during construction phase may be due to non-point discharges of sewage generated from the construction work force, stationed at the site. Construction activities for the proposed development can have minor impact on hydrology and ground water quality of the area if the construction waste leaches into ground. Potential sources of impacts on the hydrology and ground water quality during the construction phase would be soil runoff, improper disposal of construction debris, spillage of oil and grease from the vehicles and wastewater stream generated from on site activities such as vehicles washing, workshop etc. Precautions and preventive measure will be taken at the site during construction to avoid any ground and surface water contamination hence the overall impact on water environment during construction phase due to proposed project is likely to be insignificant Operation Phase The total quantity of wastewater generation is likely to be 238 m 3 /day. No impact from wastewater, this is because the sewage generated will be treated and recycled within the project components for flushing and gardening. Therefore, surface and subsurface contamination due to treated wastewater will not be envisaged. 2.8 IMPACTS DUE TO WASTE DISPOSAL Stacking and Disposal of Construction Materials Page _ 19

56 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited Stacking of construction materials will be confined to the project site only and also temporary sheds will be provided to store the materials, hence no impacts on surrounding area will be envisaged. Solid wastes generated due to proposed project during construction phase include sand, gravel, stone, bricks, plastic, paper, wood, metal and glass. Recyclables will be sent to authorized recyclers. Hence there is no significant impact due to waste disposal during the construction phase Operation Phase The solid waste generated from the project will be collected daily and moved to a common temporary storage facility by the staff dedicated for waste collection. The collected Solid waste will be disposed through Organic waste converter. 2.9 IMPACTS ON ECOLOGICAL RESOURCES Construction Phase The impact of construction activities will be primarily confined to the project site. The project site is a vacant land and devoid of any vegetation. Thus the site development work will not lead to any significant loss of any important plant species. Deposition of fugitive dust on leaves of nearby vegetation may lead to temporary reduction of photosynthesis. Such impacts will, however, be confined mostly to the initial period of construction phase. Hence the proposed development will not lead to habitat destruction, fragmentation or vegetation damage Operation Phase No wastewater will be discharge into the surface water stream. Hence, there will not be any impact on the aquatic ecology. Also the proposed project is to be located in an earmarked residential zone, which does not have any natural park or sanctuary or forest area in the immediate vicinity. The flora and fauna pattern in the area will not be disturbed due to the project. Hence the overall impact on ecological resources due to proposed project is likely to be insignificant. Moreover the entire project area would be landscaped with variety of plants IMPACT ON TRAFFIC LEVELS Construction Phase The movement of construction equipments will be mostly within the site during the project. Vehicles bringing in raw materials like sand, cement and aggregate materials will be moving into the site from outside, which will be strictly controlled and monitored as per the traffic rules, to avoid any sort of disturbance to the traffic and safety of the surrounding areas. Hence the impact due to the vehicular movement during the construction phase would be minor or insignificant. Page _ 20

57 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited Operation Phase Based on the vehicular density observed during the traffic survey conducted on the main roads around the proposed site, the existing infrastructure is capable of taking up additional traffic loads. Also the project is to be executed phase wise; the increase in traffic will be easily handled by the existing as well as the future improvements in the transportation infrastructure. Hence there will not be any impact on the traffic pattern and density IMPACTS ON SOCIO ECONOMIC ENVIRONMENT The required land for the development is owned by M/s. Casa Grande Private Limited. The proposed residential complex will be open to members of all communities and castes. The above measure will encourage mixing of different caste people for their respective festivals and occasions. This will improve the social welfare and brotherhood among the various communities and castes. Also the state of the art facilities proposed in the development is planned to cater the needs of the occupants which would be able to provide healthy working atmosphere. Hence it is obvious to assume that the activities of the proposed development will produce some positive impacts in the socio-economic status of the area Public Health and Safety As the project is only a construction of residential complex and all the construction activities are confined to the project site, no health related impact would be envisaged within the project area. The people engaged in the construction activities will be directly exposed to dust generation, which is likely to cause health related impact. Appropriate mitigation measures like spraying of water will be adopted to minimize dust emission in the construction site. Laborers will be provided with suitable Personal Protective Equipment (PPE) as required under the health and safety norms. Regular health checkups will be organized Positive Impact The project will facilitate maximum participation of the local work force for construction process; this will benefit the local economy, improvement in economic activity and enhancement in earning opportunities for the local population. The operation of the project and other allied facilities will improve the employment opportunities. The project will provide direct and indirect employment. About persons will be employed during the operation stage for the purpose of day-to-day maintenance works. The employment will have positive impact on the local economy thereby increasing the quality of life. The proposed rainwater recharge facility will augment the ground water level in the project area. The proposed project will also improve the aesthetics of the area due to the development of modern buildings. Page _ 21

58 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited 3.0 ENVIRONMENTAL MANAGEMENT PLAN 3.1 GENERAL Environmental Management Plan (EMP) is aimed at mitigating the possible adverse impacts of the project and for ensuring to maintain the environmental quality. The environmental management plan consists of the set of mitigation, management, monitoring and institutional measures to be taken to eliminate the adverse environmental impacts or reduce them to acceptable levels. 3.2 AIR POLLUTION CONTROL AND MANAGEMENT Construction Phase The impacts will be due to the air emissions like Particulate matter (PM 10 & PM 2.5, CO 2, NOx and SO 2 due to material handling, vehicular movements and other site activities. The particulate matters will be reduced by frequent sprinkling water on the road surfaces and on other areas where dust is arising due to material handling. All the equipments and vehicles used in the construction and transportation of materials will be maintained properly and only low sulphur diesel will be used as fuel for DG sets and construction equipment and vehicles. The emissions from the DG sets will be let out only through the stacks with adequate heights as per CPCB norms. This will avoid the deposition of the particulate matters and other pollutants by facilitating the through dispersion of pollutants into the atmosphere. The stacking of all the construction materials will be confined only within the proposed site. Vehicles carrying the raw material and debris will be covered to minimize dust emissions while travelling. Adequate parking space will be provided for construction vehicle and machinery to prevent idling and thus will help in minimizing the emissions. Wheel wash facility will be provided at the exit point of the site Operation Phase Air emissions are observed during the operation phase of the project. The air emissions will be reduced by ensuring smoother flow of traffic within the premises by better traffic management plans. It is proposed to have trees all through the boundaries of the site and along the either side of the internal roads. This will reduce the particulate matters from being transported to the nearby areas. The air emissions from the Diesel Generators will be controlled by using low sulphur content high speed diesels, periodic maintenance of DG sets as per the defined schedule of manufacturer and by providing adequate stack heights as prescribed by CPCB. The stack height for the DG sets are calculated based on the CPCB guidelines as shown below; Page _ 22

59 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited The proposed project to have 1 nos. of 180 KVA Air Pollution Control (APC) Measures The main source of air emissions from the proposed residential development is the Generator Sets the above proposed generator sets will be used only during TNEB power failure. To control the air emissions from these D.G sets, adequate stack height is provided to release the exhaust flue gases into the atmosphere at a height at which efficient dispersion takes place. Since the DG sets are operated only during power failure, the emission is not continuous and hence the impact due to these emissions is insignificant. The stack height for the DG sets are calculated based on the CPCB guidelines as shown below; Stack Height Design Calculation for 180 KVA Generator Set H = h + (0.2) (kva) 0.5 = (180) 0.5 = = Where, H = Total height of stack in meters from ground level h = height of the building in meters The stack height required as per CPCB norms is 12 m. The same will be provided. 3.3 NOISE CONTROL AND MANAGEMENT Construction Phase The noise generated from the construction equipments will be reduced through proper maintenance of all the equipments which are involved in construction activities, confining the construction activities only during the day time and providing barricades all around the project area. The adverse impacts of noise especially on workers will be reduced by providing ear muffs to the workers in high noise zones. Noise control systems such as equipment foundation pads, dampeners, silencers and acoustic enclosures will be used for individual units as per the requirement to minimize the noise & vibration. Page _ 23

60 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited Operation Phase The increase in the ambient noise levels due to the vehicle transportation will be controlled by the development of the green cover all along the internal roads and by implementing better traffic management plans inside the site premises. The better traffic management plans will significantly reduce the noise generated due to the congestion caused by the movement of vehicles. The generator noise is controlled by providing acoustic enclosures. Proper air ventilation system is designed to allow the maximum aspiration and cooling airflow required so that the engines do not overheat. Axial flow fan of required size & numbers provided for proper air ventilation. Acoustic louvers, splitter & insulated ducts are provided to suppress the noise where required. 3.4 SOLID WASTE MANAGEMENT Construction Phase Separate raw material handling yard will be demarcated. This will prevent the contamination of the soil due to the spillage of the construction materials. Cement will be separately stored under cover in bales. The raw material handling yard will be located within the project site and separated by enclosures/barricades. This will keep the working area clean and reduce the soil contamination Operation Phase During the operation phase the used oil from the DG sets will be collected in separate drums and handed over to the authorized recyclers by TNPCB. Hazardous Waste: During the operation phase the used oil, DG filters, oil mixed cotton waste and oil containers from the DG sets will be collected in separate place. Generation and disposal of Hazardous waste Quantity per annum is given in Table 15 Table 15: Hazardous Waste Generation and Disposal S.No Waste category Description of waste DG Filters & filter material Used oil Quantity in Tonnes/per annum Activity/Activities for which authorization is required Collection & Storage MS drums within 0.6 the premises 0.5 MS drums within the premises Transport & Disposal Disposal through TSDF facility Gummudipoondi Disposed to authorized re -processors Page _ 24

61 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited Non- Hazardous Waste: It is estimated that the municipal solid wastes will be generated in the following passion: Compostable wastes Recyclable wastes Inert Wastes Sludge from STP : 629 Kg/day : 314 Kg/day : 104 Kg/day : 12 Kg/day Wastes generated from the households will be segregated into compostable waste, recyclable and inert waste in the source itself (by the occupants) in separate bins. Door to door waste collection system will be adopted. Compostable waste will be treated in organic waste convertor within the site. Manure generated will be used within the site for landscaping purpose. Recyclable fraction of waste will be sold to authorized vendors and inert waste will be send for landfilling through authorized agency for waste collection in the area. Horticulture wastes leaves, grass and vegetative residues shall be collected at the secured location such that it will not hinder daily activity schedule or washed away by the surface run-off causing choking of drains, etc. and will be separately treated and disposed off along with biodegradable waste.stp sludge will be stabilized, and dewatered for separation of solids, which will be used as manure in horticulture. Solid waste Source Separation Non Biodegradable Waste Collection point Sent to authorized recyclers Biodegradable Waste Collection point Local Municipality 3.5 WATER AND WASTATER MANAGEMENT Construction Phase The wastewater generated by the construction workers will be treated and disposed through septic tank with soak pit arrangement. All the water storage tanks/containers will be maintained without any leaks. Necessary precaution and preventive measures will be taken at the site during construction to avoid any groundwater and surface water contamination. Page _ 25

62 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited Operation Phase It is proposed to use the recycled water for the part of the daily water demand in the premises. The total water requirement during operation is 328 KLD. The wastewater generation from the project is estimated to be about 236 KLD, which will be treated in proposed sewage treatment plant of 250 KLD STP. The technology adopted will be extended aeration system followed by disinfection. Treated sewage of 224 KLD will be reused for flushing, gardening and the excess will be disposed to local body for Roadside plantation and public parks. 3.6 STORM WATER MANAGEMENT Construction Phase The surface runoff during the construction period will be directed into the drains separately provided for this purpose Operation Phase The highest recorded monthly rainfall in that area and surroundings of Chennai mm during November, 2008 considering the previous 5 years day peak rainfall (Refer Table below from IMD). Chennai receives considerable rainfall thus storm water management system has been proposed considering the peak hourly rainfall of 62 mm (Rakhecha & Pisharoty) Table 16: Five Yearly Rainfall Year Rainfall (mm) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Rain water from internal roads etc will be discharged through storm water drain sloping towards rain water collection sumps. The Rainwater down comer pipes from terrace level directly connected to rainwater inspection chambers interlinked and discharged to filtration bed to store Rain water of min. An overflow pumping main pipe will be laid as lead pipe from rainwater harvesting trench up to the road for draining the excess water during rainy seasons. UPVC pipes of 6 kgf/sq.cm and specials of approved make are considered. Page _ 26

63 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited DESIGN PARAMETERS: Total Plot Area Considered Total roads and pavement area Total Greenbelt Area Total Roof Area Peak Rainfall intensity Sqm Sqm Sqm Sqm 62 mm/hr Co efficient of runoff considered for roof area : Co efficient of runoff considered for road/paved area : Co efficient of runoff considered for landscape area : Description Area in Sqm coefficient runoff Rainfall intensity in m Total Rainwater Runoff Cum/yr Road area Greenbelt area Roof area Total Run-off Taking Retention of 15 min, run-off load is Size of RWH Pit (diameter- 3 m, depth 5 m) No. of Pits Required 17.6 No. of pits Provided 18 Nos. Note: Runoff generated from (STP, Solid Waste Disposal and Other Utilities) Area will not be directed into storm water drains to prevent contamination of storm water. The runoff from rooftop will be diverted to the rain water collection trench. During abnormal rains, the excess runoff after storage and recharge will be disposed off through the external storm water drains. Details of recharge pit arrived based on soil conditions is briefed below Recharge through Pits Recharge pits are normally excavated as any shape, which are sufficiently deep to penetrate the low-permeability layers overlying the permeable layer. They are similar to recharge basins in principle, with the only difference being that they are deeper and have restricted bottom area. In many such structures, the infiltration occurs vertically through the permeable layer is much higher than the low permeable layer occurring in the top. Page _ 27

64 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited 1.5m CROSS SECTION OF RECHARGE PIT The developer has proposed to construct 18 numbers of pits in the premises. A portion of rain water falling over the roofs, road and paved area and the open area will be used for recharging the ground water. The dimension of pits is 1200 mm diameter and 3000 mm depth. A 160mm of perforated pipe covered with geotextile membrane of height 10100mm is drilled down to a depth of 9000 mm from the base of the pit and raised 1100 mm above the base of the pit. The 3000 mm pit is filled with 1100 mm of boulders, 750 mm of 40 mm jelly stone, 300 mm of 20 mm jelly stone and 100 mm of coarse sand and 20 mm jelly stone equally layered at the top. The rest of the space is left free for rain water to percolate. One inlet and one outlet pipes are placed opposite to each other at a height of 150 mm from the top of the filling. The pit is covered with 600 mm diameter of precast perforated slab and acts a s manhole. RECHARGE TRENCHES Recharge trenches are normally excavated as linear pits, which are sufficiently deep to penetrate the low-permeability layers overlying the permeable layer. They are similar to recharge basins in principle, with the only difference being that they are deeper and have restricted bottom area. In many such structures, the infiltration occurs vertically through the permeable layer is much higher than the low permeable layer occurring in the top. Recharge Trench will be constructed in the premises of the company across the slopes. Page _ 28

65 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited Details of Recharge Trenches: Trench maintained all along the boundary, the depth of the trenches will be around 1.50 m. It is planned to remove the entire impervious layer to facilitate rain water recharge. The width of the proposed trenches is 1.0 m. Pebbles of different size will be provided in an ascending order in the tank and a layer of sand will be provided on top of the filter media. The rain water flowing through the open land, paved area and green belt area will be used for recharging to ground water through the above said trenches. 3.7 LANDSCAPE AND ECOLOGICAL MANAGEMENT Construction Phase It is proposed to plant plantation on landscape area and all through the boundaries of the site and along the either side of the internal roads. This will have positive impact over the fauna of the locality Operation Phase It is proposed to have a landscape area of around Sqm (23% on surface and 7% roof top garden). It is also proposed to plant only the native species of plantations. In addition to augmenting present vegetation, it will also check soil erosion, make the ecosystem more diversified and functionally more stable, make the climate more conducive and restore balance. The following species are proposed for the plantations in the site. Adequate numbers of these species will be planted in the Landscape and along the boundaries of the site and along the either sides of the internal roads. Table 18:Proposed Plantation Within project Site S.No Common Name Botanical Name GROUND COVER GROUND COVER 1 Shatavari Asparagus 2 Lantana for fencing Lantana camara 3 Pigweed, Erva 4 White Grass White grass 5 Golden Trumpet or Buttercup Flower Allamanda 6 Singapore daisy Wadelia trilobata 7 oyster plant, boat lily Rhoeo spatheca 8 Purple Heart. Setcreasea purpurea 9 Minor Rose Vinca alba 10 Wing pod Purslane Portulaca umbraticola PALMS PALMS Page _ 29

66 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited 11 Date palm Date palm 12 Yellow bamboo Yellow bamboo 13 Raphis palm Raphis palm 15 Umbrella palm. Water Garden Cyperus alternifolius 16 Areca palm Areca palm 17 Shrubs Rangan, kheme, ponna, chann tanea, techi, pan, santan, SHRUBS Ixora species 18 Roselle Hibscus species 19 Giant-leaved Ficus species except Ficus goldenia 20 Arali, Nerium oleander 21 Fijian fire plant, Fire dragon plant Acalypha species 22 Glory bower, Pendant Clerodendron 23 Yellow elder, trumpet bush, yellow bells Techoma stans 24 Yellow oleander Thevetia Peruviana Stiff, leathery leaves in bold colors of Crotons 25 yellow, pink, red 26 Fire bush, Humming bird bush, Scarlet Bush Hamelia patens 27 The red bird plant Pedelanthus TREES TREES 28 African tulip tree Spathodea campanulata 29 Tulip tree, Pacific Thespesia populnea Red frangipani, Common frangipani, Plumeria alba 30 Temple Tree 31 Champa Plumeria rubra 32 lettuce tree, Cabbage tree Pistonia alba 33 Almond tree, Terminalia catappa 34 Lemon Bottlebrush Callistemon citrinus 35 Candle Bush, Candle bush Cassia alata 36 Golden shower, Indian laburnum, Cassia fistula 37 Crape myrtle. Trees Lagerstroemia indica 3.8 SOCIO ECONOMIC DEVELOPMENT PLAN Construction Phase Page _ 30

67 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited Only locally available workforce will be used for the construction purpose. This will result in the improved economic condition of the people of that area, at least during the construction period. Medical checkups will be done at regular intervals to all the employees working. Trained first aid personnel will be made available round the clock throughout the construction phase. The safety procedures will be made available with the respective shift in charges and the same will be pasted in the workplaces. All the employees involved in the construction activities will be provided with the necessary Personal Protective Equipments (PPE) and instated to use it. Occupational health and safety orientation training will be given to all employees consisting of basic hazard awareness, site-specific hazards, safe working practices, and emergency procedures Monthly safety assessment meetings will be conducted to identify potential safety issues (e.g., site access, construction, work practices, security, transportation of heavy equipment, traffic management, emergency procedures and fire control and management) and measures to mitigate them Operation Phase The people of the locality, especially women, may be employed in the households as service providers/maintenance staffs. This will improve the circulation of money in the study area. The project also stimulates the auxiliary developments around the project area. This will result in the development of necessary infrastructure and amenities at least around the project site. 3.9 ENERGY CONSERVATION Energy conservation will be one of the focuses during the project planning and operation stages Energy Saving Practices Use of Energy Efficient low loss electrical ballast. Usage of CFL/LED lamps Use of capacitor banks power factor improvement of EB power Use of copper wound transformer Solar lighting is considered partly for external lighting. Use of occupancy sensors and dimmers for lights in the parking areas Energy Conservation Measures Page _ 31

68 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited Building Construction Data In accordance with Energy Conservation Building (ECBC) Code 2007 norms, Chennai comes under warm & humid climate zone. Hence, based on the ECBC norms, U Values considered are as follows: Roofs & Opaque Walls Roofs and opaque walls shall comply with either the maximum assembly U-factor or the minimum insulation R-value. R-value is for the insulation alone and does not include building materials or air films. The roof insulation shall not be located on a suspended ceiling with removable ceiling panels. The U-values of the roof and opaque wall of the building will meet the requirements as specified in the Energy Conservation Building Code (ECBC) ECBC Clause: (Reference) Component Permissible U- Value as per ECBC (W/m 2 C) Resultant Value due to the proposed configuration (W/m 2 C) Roof U R Wall U-0.44 R-2.1 Vertical Fenestration Vertical fenestration shall comply with the maximum area weighted U-factor and maximum area weighted SHGC requirement. Vertical fenestration area is limited to a maximum of 60% of the gross wall area for the prescriptive requirement. Description Maximum U-factor WWR=40% Maximum SHGC 40% <WWR<=60% Maximum SHGC Glass Electrical & LV Systems a. Copper conductor cables are specified for sizes of 16 sq mm and below, this will reduce losses and improve reliability. b. All lifts shall be provided with AC variable voltage, variable frequency drives (ACVVF). c. Power factor shall be maintained 0.95 or higher. This will reduce electrical power distribution losses in the installation. Page _ 32

69 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited d. Timers and photo-electric sensors shall be used to switch ON / OFF external landscape and facade lighting. e. Compact Fluorescent Lamps (CFL s) with high frequency ballast shall be used for plant rooms, corridors and BOH areas. f. All fluorescent light fixtures are specified to incorporate electronic chokes which have less watt-loss compared to electro-magnetic chokes and result in superior operating power factor. This indirectly saves energy. Electronic chokes also improves life of the fluorescent lamps. g. All fluorescent light fixtures are specified to incorporate high frequency ballast. Due to high frequency ballast florescent tube consume less energy. h. Energy efficient fluorescent lamps & CFL lamps which give approx. 30% more light output for the same watts consumed and therefore require less nos. of fixtures and corresponding lower point wiring costs. i. An APFC relay based on thyristor switching is proposed to effect the power factor correction / improvement within a few cycles of deviation from the setting & also to reduce inrush currents. j. Transformers shall have minimum no load losses as compared to conventional transformers. Plumbing & Fire Fighting a. VFD based hydro pneumatic system. b. Efficient condensate return & recovery system for domestic hot water. c. Pumps & equipment selected on ƒbest energy efficiency point Soil Environment Brown sandy silty clay occurs in the top 1.5 till 3.0 m, followed till 3.5 m of Brownish yellow clayey silty sand then followed by Soft Rock FIRE PROTECTION MEASURES In the proposed residential complex, entire building design will be based on the National Building Code (NBC). Fire reserve overhead tanks are provided. The portable fire extinguishers of various types are provided in each villas, pump room, transformer room, DG room for fighting light hazard fire. All the extinguishers used in the project area would be with BIS mark and are located at an easily accessible position without obstructing the normal passage. The fire extinguishers used in the project area are given below: Page _ 33

70 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited One dry chemical powder extinguisher of 10 kg capacity and 2 fire buckets filled with clean, dry, fine sand will be provided for every 8 cars in the parking areas. One CO 2 extinguisher of 2 kg capacity will be provided near the entrance to each main switchboard room. Two dry chemical powder extinguishers each of 5 kg capacity will be provided near EB transformer yard. One dry chemical powder extinguisher of 10 kg capacity will be provided near the entrance to each generator room. One CO 2 extinguisher of 2 kg capacity will be provided inside each lift machine room. One water type gas cartridge extinguisher of 9 l capacity will be kept near each stair case landing on every floor. All the extinguishers used in the project area would be with BIS mark and are located at an easily accessible position without obstructing the normal passage Public address system In addition to this, it is also proposed to provide public address system in each floor near stair case area. This will help in addressing / altering the people residents by the security personal through microphone arrangement RISK ASSESSMENT, DISASTER MANAGEMENT AND SAFETY MEASURES A well - defined Risk Management Plan is made as follows: STEP 1: Define the Projects/Tasks Site Clearing Excavation Raft RCC slab Block work / plastering External plastering Joinery - frame fixing Flooring Interior works Windows fixing Flooring False ceiling Painting Services I.Electrical II.Plumbing III.Fire fighting Page _ 34

71 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited Equipments i. Elevator ii. STP /WTP iii. Hard and landscape STEP 2: Identify the Hazards a) Are you using (Tick boxes) [ ] plant/equipment [ ] portable electrical equipment [ x ] pressure vessels/boilers [ x ] hazardous substances [ ] scaffolding [ ] ladders [ ] lifts/hoists/cranes/dogging/rigging/load shifting machinery b) Does the project/task involve (Tick boxes) [ ] using tools/equipment with moving part(s) [ ] using tools/equipment that vibrate [ ] working around electrical installations [ ] working near traffic [ ] working at a height (>3m) [ ] working in isolation [ x ] working with x-rays,or lasers [ ] working in a confined space [ ] electrical wiring [ ] manual handling [ x ] asbestos removal [ ] welding [ x ] hazardous waste [ ] excavation / trenches (>1.5m) [ ] repetitive or awkward movements [ x ] lifting or moving awkward or heavy objects c) Is there (Tick boxes) [ ] noise [ ] dust/fumes/vapours/gases [ x ] extreme temperatures [ x ] risk of fire/explosion [ ] slippery surfaces/trip hazards [ x ] poor ventilation/air quality [ x ] a poorly designed work area for the project/task STEP 3: Assess the Risk Table 22: During Construction Phase: Activities Air Water Noise Soil Occupational Pollution Pollution Pollution Pollution Hazard A. Material Handling: Cement +M - - +M +M Steel M Sand Stone L Wood Page _ 35

72 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited Glass H Hardware Colour - +H - +H - B. Construction Machinery Rotary Driller +L - +H - +H Mixers +M - +M +L +M Excavator +L - +L - +H Material Lift - - +L - +H Risk Factor: + : Positive - : Negative L : Low M : Medium H : High For any projects/tasks that present a high or extreme risk, a Safe Work Method Statement must be completed. STEP 4: Control the Risk Note how you will control the risk following the priorities listed to the right. This may include controls like redesigning the workplace, using guards or barriers, ventilation, using lifting equipment or personal safety equipment. Eliminate the Hazard Keep the Hazard and People Apart Change the Work Methods Use Personal Protection Note any specific risk assessments required for high-risk hazards. Check whether any hazards noted in step 2 require further assessment or action. [ x ] hazardous substance risk assessment [ ] test and tag electrical equipment [ ] confined spaces risk assessment [ ] sound level test a) Note Permits/Licenses/Registration required [x ] Demolition work [ ] Electrical wiring [ x ] Pressure vessels [ x ] Friable asbestos removal [ x ] Ionizing radiation sources [ ] registers for chemicals, Personal protective Equipment, training, ladders, lifting gear Page _ 36

73 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited b) Note certificates of competency/licenses for operators [ ] Scaffolding [ ] Rigging [ ] Load shifting machinery operation c) Note emergency systems required [ ] first aid kit [ ] extended first aid kit [ ] emergency stop button [ ] additional emergency procedures STEP 5: Actions Required to Control the Risk A. During construction to reduce pollution: [ ] Pesticide application [ ] Crane operation [ ] Hoist operation [ ] Fire control [ ] remote communication mechanism [ x ] others Manual water sprinkling during dust excavation Using RMC to reduce air pollution Dust cover for Trucks New Construction Machinery Equipment will work intermittently Rotary drillers instead of acoustic drillers Vehicular trips will not be at peak traffic hour Ear Plugs to workers No noise polluting work in night shifts B.Safety & Hygienic Measures: Adequate drinking water, toilet and bathing facilities There will be free medical camps and first aid rooms for workers Safety equipments like helmets, safety shoes etc. to personnel and visitors Personnel protective equipments like leather gloves, goggles and ear muffs when required Personnel working on heights will wear safety equipments and will not work alone To prevent any accidents, the entire area under construction will be cordoned off with tin sheets and safety tape is run outside this fence Regular pest control will be done Adequate fire fighting equipments will be provided Operational Phase: Risks in the complex will be due to natural calamities like earthquake, flooding and others such as fire and accidental hazards. All precautions will be taken to control these risks. Fire fighting system shall be provided as per regulations of Chief Fire Officer. For earthquake resistance, the structural design shall be as per is certified as per IS code 875 and IS for Seismic Zone 3 of Chennai. Page _ 37

74 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited First Aid Facilities: Construction projects will comes under the highly hazard or specific hazard category. Requirement of the first aid provision at work depends on several factors including size of the undertaking, number of employees, hazard arising, access to medical services, workers in isolated locations, etc., Construction phase we have plan to appoint one trained first aider for this proposed development project, and a registered nurse. First Aid Room: Location, Work Space, Work Environment, Signs & Management the First Aid room easily accessible during working hours and also close to road access. The first aid room should be easily recognizable signs. First Aid Minimum Requirements for this proposed construction project: Furniture & Fittings: Wash basin with hot and cold water supplies, Desk, work bench or dressing trolley, Telephone, Electric power points, Couch with blankets and pillows. Medical Requirements: Examination Table, Examination Lamp, Stretcher Lifting Frame or similar device for transporting patients, First aid kit, Dressing clothes and gloves, soap, disposable towels, trays and bowls Environment Monitoring Plan for Construction and Operation Phase Environmental monitoring plan is a vital process of any management plan of the development project. This helps in signaling the potential problems that resulting from the proposed project and will allow for prompt implementation of effective corrective measures. The environmental monitoring will be required for the construction and operational phases. The main objectives of environmental monitoring area: To assess the changes in environmental conditions, To monitor the effective implementation of mitigation measures, Warn significant deteriorations in environmental quality for further prevention action. The emissions from each of the diesel generator shall be monitored for exit concentration of Sulphur dioxide, Oxides of Nitrogen and Particulate Matter on regular intervals. The frequency of monitoring shall be decided in consultation with the TNPCB. Sampling ports in the stacks/vents shall be provided in accordance with CPCB guidelines. Page _ 38

75 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited Table 20: Environmental Monitoring Plan S. No. Description Frequency of Sampling and Analysis Construction Phase 1. Ambient Air Quality Once in six month 24 hourly 2. Stack Emissions from DG set Once in six month 3. Ambient Noise Level Once in six month 4. Soil Quality Once in six month 5. Ground Water Once in six month Operation Phase 1. Ambient Air Quality Once in six month 24 hourly 2. Stack Emissions from DG Set Once in six month 3. Ambient Noise Level Once in six month 4. Treated Sewage Once in a week 5. Ground Water Once in six months Table 21: Budgetary allocation for environmental management during Construction phase Description Drinking Water & Sanitation (Temporary Toilet) Facilities Budgetary Allocation (Rs. In Lakhs) Capital Expenses Operational Expenses Storm Water Management Solid Waste/Debris Management Environmental Monitoring 0 7 Dust Suppression Measures 3 5 Occupational Health & Safety 2 7 Total Table 22: Budgetary allocation for environmental management during Operation phase Description Sewage Treatment Plant & Recycling System Budgetary Allocation (Rs. In Lakhs) Capital Expenses Operational/ Maintenance Expenses (Per Annum) 22 4 Page _ 39

76 Conceptual Plan for Residential Construction Project M/s. Casa Grande Private Limited Rain Water Harvesting System Solid Waste Management Environmental Monitoring 3 3 Energy Conservation 25 3 Greenbelt Development 30 3 Total ********* Page _ 40

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89 7 4 1 A3-13 A3-01 A2-74 A A2-73 A OPEN VERAND AH A2-38 A M WIDE DECK A2-37 A2-20 A2-01 A2-19 N SECTION PLAN PLAN SAGE TREATMENT PLANT DETAILS DETAILS OF SEPTIC TANK ( 280 KLD ) SECTION ON AA 40' Wide Access Road PERCULATION PIT M DRIVE WAY 7.2M DRIVE WAY S-S-01 ROAD TO BE GIFTED S-S M DRIVE WAY 3.5M SETBACK 3.5M SETBACK SECURITY ROOM 94 S-N-01 S-N M SETBACK 3.5M SETBACK M DRIVE WAY 16 B2-25 B1-25 B2-24 B1-24 B2-09 B1-09 B2-08 B B M DRIVE WAY M DRIVE WAY B1-33 B1-37 B3 B M DRIVE WAY 3.5M SETBACK 3.5M SETBACK 6M DRIVE WAY 7.2M DRIVE WAY 7.2M DRIVE WAY 7.2M DRIVE WAY M DRIVE WAY M SETBACK M SETBACK M SETBACK M SETBACK M DRIVE WAY M SETBACK 3.5M SETBACK B2-32 B2-17 B2-16 B B B B B M DRIVE WAY M DRIVE WAY ELEVATION OF GATE RAINWATER STORAGE SUMP SECTION OF COMPOUND WALL 7.2M DRIVE WAY 3.5M SETBACK 3.5M SETBACK U.G SUMP PLAN SERVICE MOTOR ROOM 7.2M DRIVE WAY MH PECULATION PIT U.G. SUMP Scientifically closed 368 MH SOLAR HOT WATER SYSTEM(SWHS) DETAIL U.G SUMP 15m x 5 m x3m M SETBACK 3.5M SETBACK 363 P.C.C. 1:4:8 Sand filling BRICK BAT SECTION B-B PERCULATION PIT U.G. SUMP Scientifically closed 230mm thk. R.C.C.Raft Slab RIVER SAND 7.2M DRIVE WAY 230mm thk. R.C.C.wall G.L MOTOR ROOM SECURITY ROOM G.L PLAN PLAN 150mm thk. R.C.C.cover slab 0.2 DOOR 900x WINDOW 1800x 1500 DOOR 900x MOTOR ROOM SERVICE 7.2M DRIVE WAY 3.5M SETBACK 3.5M SETBACK SECURITY ROOM WINDOW 1800x 1500 WINDOW 1800x TRANSFORMER YARD M DRIVE WAY SECTION - AA SECTION - ZZ GL MOTOR ROOM SECURITY ROOM SECTION PLAN GL DETAILS OF FILTRATION SUMP "Ø M DRIVE WAY SITE PLAN SCALE 1:400 OSR Area - 10% Sq.m CLUB HOUSE FILTRATION SUMP MOTOR ROOM U.G SUMP 15m x 5 m x3m OPEN VERAND AH 3 M WIDE DECK S.T.P (280 KLD) 301 SERVICE SCALE : N.T.S PERCULATION PIT KEY PLAN N LICENSED SURVEYOR SIGNATURE : OWNER'S SIGNATURE : pdfmachine A pdf writer that produces quality PDF files with ease! Produce quality PDF files in seconds and preserve the integrity of your original documents. Compatible across nearly all Windows platforms, if you can print from a windows application you can use pdfmachine. Get yours now! KANCHIPURAM DISTRICT. THAZAMBUR VILLAGE, THIRUPORUR TALUK, SURVEY NOS. 163/1,163/2 & 164/2, AT THAZAMBUR VILLAGE, COMPRISED IN PROPOSED RESIDENTIAL BUILDINGS SITUATED

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136 101.55M LEVEL C1 B B M LEVEL 00 AY RIV A2-0 L EVE A AY RIV MD A A MD A2-2 6 A2-1 6 A2-2 L EVE P S.T LD) 0K ( ION AT TR FIL SUMP 89 2 A3-0 BH SE OU M LEVEL M LEVEL % - 10 rea q.m RA OS 0.61 S kLD UG SUMP & PUMP ROOM (4.5M DEEP) (UNDER GROUND AREA-372 SQ.M) CLU EL 6 A2-5 LEV A M 56 ORGANIC WASTE CONVERTER MECHANICAL EQUIPMENT SHED CAPACITY - 200kg. PER DAY (GROUND LVL AREA-68 SQ.M) A EL LEV.4 0M 5 A A3-0 7 A2-8 8 A2-5 4 A A3-0 6 A2-8 9 A A2-8 0 A AY RIV 5 A3-0 4 A EL LE V.40M 0 A A A2-2 EL LE V.40M 9 A A A2-8 1 A A2-5 1 A AY RIV 2 A2-6 MD A A2-5 3 A2-2 8 A A2-2 7 A M LEVEL 26 5 A2-1 4 A ML.55 7 A A2-4 4 A2-6 L EVE 81 ML EL LEV.5 5M 8 A A2-6 7 A MD 6 A3-0 L EVE A3-0 ML.55 2 A A3-0 1 A A3-0 0 A A3-1 AY RIV 98 1 A3-1 MD 9 A2-7 6 A2-6 6 A A A A2-7 7 A A2-7 8 A UP 101 EL LEV CK AY RIV 45 8 A2-2 3 A2-1 L EVE 2 A A2-2 ML A MO.4 0M 6 A2-7 9 A A2-4 AY RIV 0 A MD A A A2-7 0 A A EL LEV L EVE 1 A A2-4 1 A2-4 2 A2-3 AY RIV 32 MD 0 A M 2 A A A A2-3 4 A2-3 7 A2-0 6 A2-0 5 A2-0 5 A A2-3 L EVE B1- B1- B1- B1- B1- ML B1- UP CK MO B1-.40 R TO MO OM RO 3 A2-0 ML ML A2-3 A A2 101 B m m x3 x 5 UMP S A M LEVEL B2- B2- B2- B2- B2- B2- B2- B2-3 A3-1 U.G EL LEV 15m 1 A B1- B1- B1-13 B1- B1- B1-40'.5 5M B B B2- B B2- B2- Wid M LEVEL AY RIV B1- B2- B2- B2- B2- L EVE ea ss cce MD L 5M 1 56 E VIC SE R B1- B1- B1- B1- B1- B1- B AY RIV pdfmachine - is a pdf writer that produces quality PDF files with ease! Get yours now! Thank you very much! I can use Acrobat Distiller or the Acrobat PDFWriter but I consider your product a lot easier to use and much preferable to Adobe's" A.Sarras - USA AY RIV MD MD E VIC SE R 17 B2- B2- B2- B2- B2-22 B2- B B2- L EVE AY Y WA IVE DR 12M AY RIV R ME OR SF AN ARD TR Y 240kLD STP (4.5M DEEP) (UNDER GROUND AREA-263 SQ.M) 32 B1- B1- B ML AY RIV B1- B1- B1- B RIV MD B2- B2- B S-S C2 C3 B2- B2- B2- B2- ad Ro M LEVEL E S S-N -29 -S WS 9 -N-2-28 S-S -23 MD -27 S-S E -N WS -28 S S-N -25 S-N 6 -S-2-26 S S-S 5 -N-2 S 4 -S-2-23 S-S S-N E S-N -22 -S WS S -21 S-S N-2 MD MD E -20 S-S S-N 9 -S-1 S -19 S-N -18 S-S -21 E VIC SE R AY RIV -N WS R TO M O OM RO S-N -17 S-S -18 S -17 S-N MP SU m x3m 5-15 S-S 6 -S-1 U.G x 15m E -N WS -16 S S-N 4 -S-1 S-N -13 S-S 7.2 MD M 7.2 S-N 2 -S-1 S -13 S MD 7.2 Y WA IVE DR C4 C5 C6 C S-N 1 -S-1 S -10 S-S 1 -N-1 S -10 S-N 9 -S-0 S-N S-N -09 S S-S S 7 -S-0 S 8 -N-0-06 S-S -05 S-N N-0-05 S-S -02 AY RIV -03 S-S S-S E -N WS -04 S C M LEVEL -01 S-N 2 -S-0 E -N WS S-S -01 S-N Y WA IVE DR 6M Y WA IVE DR M

137 N A3-13 A3-01 A2-74 A A2-73 A OPEN VERAND AH A2-38 A M WIDE DECK A2-37 A2-20 A2-01 A2-19 N M DRIVE WAY 3.5M DRIVE WAY S-S-01 S-N-01 B5 B4 B3 B1-37 B M DRIVE WAY 40' Wide Access Road PERCULATION PIT M DRIVE WAY 7.2M DRIVE WAY ROAD TO BE GIFTED S-S M SETBACK 3.5M SETBACK SECURITY ROOM S-N M SETBACK 3.5M SETBACK M DRIVE WAY B2-25 B1-25 B2-24 B1-24 B2-09 B1-09 B2-08 B M DRIVE WAY M DRIVE WAY M DRIVE WAY 3.5M SETBACK 3.5M SETBACK 7.2M DRIVE WAY 7.2M DRIVE WAY 7.2M DRIVE WAY M SETBACK M SETBACK M SETBACK M SETBACK M DRIVE WAY M SETBACK 3.5M SETBACK B2-32 B2-17 B2-16 B B B B B M DRIVE WAY M DRIVE WAY M DRIVE WAY 3.5M SETBACK 3.5M SETBACK SERVICE MOTOR ROOM 7.2M DRIVE WAY U.G SUMP 15m x 5 m x3m M SETBACK 3.5M SETBACK M DRIVE WAY SERVICE 7.2M DRIVE WAY 3.5M SETBACK 3.5M SETBACK TRANSFORMER YARD M DRIVE WAY M DRIVE WAY OSR Area - 10% Sq.m CLUB HOUSE FILTRATION SUMP MOTOR ROOM U.G SUMP 15m x 5 m x3m OPEN VERAND AH 3 M WIDE DECK S.T.P (280 KLD) 301 SERVICE SCALE : N.T.S PERCULATION PIT KEY PLAN LICENSED SURVEYOR SIGNATURE : OWNER'S SIGNATURE : pdfmachine A pdf writer that produces quality PDF files with ease! Produce quality PDF files in seconds and preserve the integrity of your original documents. Compatible across nearly all Windows platforms, if you can print from a windows application you can use pdfmachine. Get yours now! KANCHIPURAM DISTRICT. THAZAMBUR VILLAGE, THIRUPORUR TALUK, SURVEY NOS. 163/1,163/2 & 164/2, AT THAZAMBUR VILLAGE, COMPRISED IN PROPOSED RESIDENTIAL BUILDINGS SITUATED

138 A A A2-07 AY A A A A2- A A2- A2- A2- I MM SW ING POOL DECK L OB BY ENIO T ROMA D AR.M) RY ME ION SQ OR AT -64 SF LOC REA AN A TR & DG UND RO T L IF TI P URPO SE HALL O PE N VE H RANDA 3.5 MS O PEN NDAH V ERA ACK ETB % - 10 rea.m q RA OS 0.61 S 607 P) 01 M UL E OUS BH 56 L AUND CLU CONV A2- A3-8 8 ACK ETB 57 MS A2-6 5 ON ATI TR FIL S UMP LEVEL 59 ACK ETB A2- MS A2- ACK ETB A2- MS A M A2- ACK ETB A2-0 6 A2- A2- MS ACK ETB A2- MS A E DE 5M ) (4..M M SQ OO 72 P R A-3 UM ARE & P ND MP O U S U GR UG ER LD ND A A2- A2- A2-2 2 ACK ETB A2- A2- MS A2- A A A2- AY AY A2- RIV RIV A A2- D 7.2M A2- D 7.2M A A AY A2- A ACK ETB A2- MS M LEVEL A A2- A2-5 6 RIV A2- D 7.2M A A2-3 9 P UM A2-7 6 A2- AY A2- A RIV A2- A A2- A2- AY A2- D 7.2M A A A2- A2-9 2 RIV A2- A2-0 3 D 7.2M A2- A2-0 1 RIV A A ACK ETB A2- ACK ETB VIC SER A2-9 0 D 7.2M 8 0 A A ACK ETB 35 MS A2- MS A2-8 7 A ACK ETB UP A2- MS CK 75 R TO M O OM RO ACK ETB 03 MS A A A A (U MS A A2-3 7 A K BAC SE T 0k A A2A2--37 A B1-0 2 B1-0 4 B1-0 3 B M LEVEL 1 B2-0 2 B2-0 3 B2-0 A2- M 3.5 AY RIV D 7.2M E S UG 01 STP 2 0 A2-6 B1-1 5 B1-1 5 B1-0 8 B2-0 7 B2-0 6 B2-0 5 B2-0 4 B2-0 ide ACK ETB 'W MS 40 9 B1-0 0 B1-1 1 B1-1 2 B1-1 3 B1-1 4 B1-1 1 B2-1 2 B2-1 3 B2-1 4 B EG 9 B1-1 0 B1-2 1 B1-2 0 B MEP CONSULTANTS: TO EF NO TO EF NO Door No : 4 & 6, Plot No : 838,89 Street, 13th Sector, 89 Street, 13th Sector,k.k.Nagar,Chennai-78 Mail : [email protected] Mail : [email protected] Ph : TITLE: PREP. BY APP. BY CHKD. BY NAME SIGN DATE O-CGE-MEP-01 DWG. NO. R0 REV. SUBMITTED FOR PRELIMINARY APPROVAL CONSTRUCTION CR-12 PROJECT NO. SCALE MEP SPACE PLANNING pdfmachine A pdf writer that produces quality PDF files with ease! Produce quality PDF files in seconds and preserve the integrity of your original documents. Compatible across nearly all Windows platforms, simply open the document you want to convert, click print, select the Broadgun pdfmachine printer and that s it! Get yours now! M LEVEL 8 B1-1 OV 8 B B2-1 0 B2-2 2 B1-2 9 B kLD STP (4.5M DEEP) (UNDER GROUND AREA-263 SQ.M) 2 B1-3 1 B1-3 0 B1-3 1 B2-2 3 B1-2 AY AY RIV D 12M DG TRANSFORMER YARD (ABOVE GROUND AREA-64 SQ.M) ELV ROOM 2 B2-3 1 B2-3 9 B1-2 2 B2-2 4 B1-2 AY ( AB C B2-3 8 B1-2 3 B2-2 RIV S-S -30 S-N AR ILL IONS T RP DE LOCA E EE B N F S & LL TIO L NO SHA E A IBU TR CTU SAM DIS. A THE IVE AL AT AND RIC L CT INDIC WG LE ICA. D F E ARE HE HN TS O O WN M T TEC MEN :N O FRO ON IRE T E SH U.40 NO XES ARY ASED REQ 171 B O LL V D B RY AY 2-16 B W O A E IVE DR SH ALIZ TUT 3.5M A 5 7 FIN D ST B2-1 B1-1 AN 7 B M LEVEL C2 9 B2-2 7 B1-2 4 B S -28 S-S -29 S-S 9 -N-2 S C3 8 B2-2 6 B1-2 D 7.8M D 7.2M RIV -28 S-N 7 -S-2 S-N 6-2 S-S AY Y WA -25 S-S K VA MO 2303 A 6 9 D LEVELM) M B1-0 6 A39 04 YAR SQ. 7 A3ER A3A RM B1-0 UP 9 06 CK 9 A3FO ARE 22 MO NS 8 1 A RA OUND A1T B A12104A3-09 A3-0 RIVE WAY GR VE D A3O B 7.2M 11 A ( A3R 12 S LA A3. 13 PIL TION TS A3A EN ER OC EM ED 36 FE S & L LL BE QUIR A E ION O UT AL N E SH Y R 39 RIB TU AM TOR M LEVEL IST. AC E S ATU D H AL TIVE D T D ST A N RIC AN CT INDIC WG AL A LE D NIC F E ARE HE H O O WN M T TEC :N O R O ON F T E SH NO XES ARY SED A B O A LL V D B E SH ALIZ FIN -26 S-N 200 E RIV MD 5.2 S -25 S-N -24 S-S -23 S-N -22 S-S -23 S-S 3.5 MS ACK ETB -21 S-S 4 -N-2 7.2M -22 S-N S-S ACK ETB MS W IVE DR -21 S-N S-S AY RIV D 7.2M -20 S-N AY AY -19 S-N 8 -S-1 S S-N S-S 7-1 S-S -17 S-N S-S S-N S -14 S-N -15 S-N 4 -S-1 7 B2-2 5 B B S-S -13 S-S AY RIV D 7.2M RIV -12 S-S S-N S-S -11 S-N C7 5 B S-N -09 S-S MS S-N ACK ETB -08 S-N S-S 8-0 S-S -07 S-N -06 S-S C4 C5 C6 C M LEVEL SRISHTI DESIGNERS ARCHITECT S -05 S-S D 7.2M 6 -N-0 S MS 3.5 RIV -05 S-N 4 -S-0-04 S-N AY DRIV 6M D 7.2M EB LOAD DETAIL 2447kVA TOTAL CONNECTED LOAD MAXIMUM DEMAND LOAD 2362kVA 2567kVA EFFICIENCY ON TRANSFORMER 92 % 5 NOS. 500KVA TRANSFORMER NO. OF TRANFORMERS 1 NOS. 250KVA TRANSFORMER THAZAMBUR CHENNAI -02 S-S 3-0 S-S -03 S-N S-S -1 S-N DG LOAD DETAIL 253kVA TOTAL CONNECTED LOAD MAXIMUM DEMAND LOAD 162kVA 190kVA EFFICIENCY ON DG 85 % 1 NOS. 180KVA DG NO. OF DG SETS PROJECT CLIENT CASA GRANDE PVT LTD ACK ETB -01 S-N -02 S-N -01 Y WA IVE DR M 3.5 ad Ro ess Acc

139 pdfmachine - is a pdf writer that produces quality PDF files with ease! Get yours now! Thank you very much! I can use Acrobat Distiller or the Acrobat PDFWriter but I consider your product a lot easier to use and much preferable to Adobe's" A.Sarras - USA

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144 GEOTECHNICAL INVESTIGATION REPORT for Residential Buildings at Thazhambur Village, Thiruporur Taluk, Kanchipuram District EXECUTIVE SUMMARY M/s Casagrande Private Limited are associated in construction of villas at Survey no 163/1, 163/2 and 164/2, Thazhambur Village, Thiruporur Taluk, Kanchipuram District. The site for the proposed projects is situated at Survey no 163/1, 163/2 and 164/2 on the northern western side of road at Thazhambur Village, Thiruporur Taluk, Kanchipuram District. The site is irregular in shape and measures approximately 15acres. The site is enclosed by compound wall on south eastern side and partly on north western and north eastern sides. The other sides are partly fenced and open. The site is undulating with a level difference of about 0.3m. The site is lower than the existing road level by 0.4m. Vegetation in the form of grass and thorny bushes were grown within the site. The proposed structure is villas comprising of an open stilt floor at ground level and one or two upper floors. Geotechnical investigations have been undertaken at the site as per the scope of investigations, stipulated by the client, which consisted of ten borehole down to 8m depth or refusal strata where N>50, whichever is met early. The soil strata consists of sand silt and clay with varying proportions. The soil strata is in a stiff/medium dense to dense state with observed N-values varying at 4 & ** from existing ground level to 3-3.5m depth and increase to >50 between 4 to 5m depth. Water was stagnating in the entire site during the field investigations (due tothe rains before the field investigaitons). This is a surface water table and is likely to godown in due course of time. In view of the observed subsoil strata conditions the proposed structure can be supported G(C)8650A 1

145 on Short bored pile foundations. The piles may be terminated after embedding the pile in refusal strata by 30cm. Refusal strata in the form of clayey silty sand was encountered between 3.9 and 5.1m depth. The site below the existing road by about 1m. Considering the existing ground level as cutoff level of pile the effective length of pile will be about m. The load carrying capacity of different diameter piles is given below: Diameter of pile (mm) Load Carrying Capacity (t) The excavated soil cannot be used for backfilling purposes as the soil is medium swelling type. The top soil is of medium swelling type. Hence, it will exert upward thrust on the ground floor flooring. Therefore, it is suggested to remove top cm of natural soil and replace with sand/gravel for ground floor flooring. Stiff plinth beams connecting the columns in both directions may be provided which will render additional rigidity to the structure. The filler walls of the frame structure may be laid on the plinth beams. G(C)8650A 2

146 REPORT ON GEOTECHNICAL INVESTIGATION FOR RESIDENTIAL BUILDINGS AT THAZHAMBUR VILLAGE, THIRUPORUR TALUK, KANCHIPURAM DISTRICT 1.0 INTRODUCTION 1.1 Overview The geotechnical investigation has been done to ascertain the soil properties and to aid the design of viable foundations for the proposed residential buildings M/s Casagrande Private Limited are associated in construction of villas at Survey no 163/1, 163/2 and 164/2, Thazhambur Village, Thiruporur Taluk, Kanchipuram District. 1.2 Authority A comprehensive soil investigation programme has been conducted as per the oral authorisation by M/s. Casa Grande, Chennai vide our oral Work Order No.NCC/OWO/CG/185A/C/ PROJECT DETAILS 2.1 Site Location The site for the proposed projects is situated at Survey no 163/1, 163/2 and 164/2 on the northern western side of road at Thazhambur Village, Thiruporur Taluk, Kanchipuram District. The key map showing the location of the site is given in Fig. No Site Layout and Topography The site is irregular in shape and measures approximately 15acres. The site is enclosed by compound wall on south eastern side and partly on north western and north eastern sides. The other sides are partly fenced and open. The site is undulating with a level difference of about 0.3m. The site is lower than the existing road level by 0.4m. G(C)8650A 3

147 Vegetation in the form of grass and thorny bushes were grown within the site The colour of the exposed soil surface is Brown. 2.3 The Structure As per the client s information, the proposed project is residential buildings comprising of an open stilt floor at ground level and one or two upper floors. 2.4 Seismic Zone Site for the proposed project is situated in Thazhambur Village, Thiruporur Taluk, Kanchipuram District which falls under Seismic Zone III as per IS 1893 (Part 1) Geographical Information The proposed site lies in: a) Latitude : 13<05' b) Longitude : 80<18' 3.0 OBJECT OF INVESTIGATIONS 3.1 For designing the foundation system of the proposed structures, the following data are required: a) Type of foundation system. b) Depth below the ground level at which the foundation system is to be laid. c) Allowable bearing pressure on the foundations levels. 3.2 To determine above factors, the following information would be required: a) The sub soil profile indicating thickness of the various soil strata, to a depth down to the influence zone below the foundations. b) Engineering properties of the soil strata at various levels. c) Physical characteristics of the soil strata. d) Variation of the strength of the strata with depth. G(C)8650A 4

148 3.3 The object of conducting field and laboratory investigations and analysis is to get data for the parameters mentioned in 3.2 and providing the recommendations. 4.0 SCOPE OF INVESTIGATIONS 4.1 Scope of investigations as given in the work order: a) Sinking 10 borehole down to 8m depth or refusal strata (where N value is >50) whichever is met earlier, as required by the client. b) Conducting standard penetration tests at 1.5m intervals. c) Recovering undisturbed soil samples from various levels of the sub soil strata. d) Recording ground water table levels, if met with. e) Conducting relevant laboratory tests on soil samples recovered. f) Preparation and submission of a technical report containing the details of the tests carried out, their analysis and recommendations regarding the foundation system to be adopted. Two copies of the report are to be submitted. 5.0 FIELD INVESTIGATIONS 5.1 General Details Weather Conditions Weather was clear during field investigations. However there were few spells of rain before the field investigations due to which the site was water logged Locations of Tests The location of the boreholes were shown at site by the client. A Schematic site plan showing the location of the test points marked by the client is given in Fig.No Boreholes The boreholes were progressed by shell and auger method as per IS The boreholes were terminated at refusal strata where further augering and penetration G(C)8650A 5

149 were not possible. The refusal strata encountered is in the form of clayey silty sand. The N value in this strata is >50. The termination depth of boreholes and depth of water table encountered in the boreholes during the period of field investigations are given in the following table. Borehole No Termination depth from Existing G L (m) Depth of water table ABOVE Existing G L (m) Standard penetration tests were conducted at 1.5m intervals. Disturbed soil samples recovered from split spoon samples were packed in polythene bags, labelled and retained for identification purposes Undisturbed soil samples were recovered by thin walled tubes conforming to IS These tubes had an area ratio of less than 10%. The diameter of soil samples were 50 mm and its length was 45 cm. The ends of sample tubes were sealed by wax to prevent loss/ ingress of moisture and labelled. 5.3 Ground water table Water was stagnating in the entire site during the field investigations. This is a surface water table and is likely to godown in due course of time. G(C)8650A 6

150 6.0 LABORATORY INVESTIGATIONS 6.1 The undisturbed and disturbed soil samples brought to the laboratory were used for the tests, as appropriate. 6.2 The soil samples were subjected to various tests to determine the following properties a) Type of soil and its gradation b) Consistency limits c) Natural density d) Natural water content e) Shear strength properties 6.3 In order to determine the above properties listed in 6.2, the following tests were conducted. a) Sieve analysis on the coarse grained soil fraction b) Hydrometer analysis on the fine grained soil fraction c) Liquid and plastic limits d) Natural Density and Water Content tests e) Triaxial compression tests f) Specific Gravity g) Free Swell Index tests. 7.0 RESULTS OF INVESTIGATION AND ANALYSIS 7.1 Presentation of Results The results of borehole investigations and of the laboratory investigations conducted on the soil samples collected from the boreholes have been presented in the form of tables. Table No.1 to 10 give the details of borehole no.1 to 10 respectively. G(C)8650A 7

151 7.1.2 The soil profile tables indicate the following: a) Standard Penetration Test Values (i.e. N- values observed) at various depths b) Soil description identifying the type of soil c) Grain size analysis indicating composition of sub soil d) Atterberg limits e) In-situ bulk density and Water content f) Triaxial compression test results 7.2 Analysis of Soil Profile A perusal of the data presented in the soil profile tables indicate the presence of the following strata. a) Stratum I : Brown sandy silty clay b) Stratum II : Brown clayey silty sand c) Stratum III : Refusal strata The thicknesses in each borehole of each strata described in is given in the table below: BH NO. (depth in m : from - to ) Stratum I Stratum II Stratum III G(C)8650A 8

152 (depth in m : from - to ) BH NO. Stratum I Stratum II Stratum III Soil Composition The grain size distribution of the soil samples at various depths, as determined in the laboratory have been presented in the form of grain size analysis curves, as Fig. No.3, 3A & 3B and in tables below them The variations in the grain size distribution - strata wise across the boreholes are as follows: a) Stratum I : Brown sandy silty clay BH NO. Gravel % Sand % Silt % Clay % b) Stratum II : Brown clayey silty sand BH NO. Gravel % Sand % Silt % Clay % G(C)8650A 9

153 BH NO. Gravel % Sand % Silt % Clay % The above results indicate that : a) Stratum - I consists of about 15-17% of sand, 30-32% of silt and 51-55% of clay. b) Stratum - II consists of about 18-21% of clay, 22-32% of silt and 47-60% of sand. 7.4 In-situ Bulk Density, Water Content and Dry density The In-situ bulk density of the sub soil stratum varies between 1.82 and 1.93g/cm 3, water content varies between and 28.39% and In-situ dry density of the sub soil stratum varies between 1.42 and 1.67g/cm 3. BH No Depth (m) Water Content (%) In-situ Bulk Density (g/cm 3 ) Dry Density (g/cm 3 ) G(C)8650A 10

154 BH No Depth (m) Water Content (%) In-situ Bulk Density (g/cm 3 ) Dry Density (g/cm 3 ) Atterberg Limits: The Atterberg Limits in Stratum I (Brown sandy silty clay) are given below: BH No Liquid Limit (%) Plastic Limit (%) Plasticity Index (%) The Atterberg Limits in Stratum II (Brown clayey silty sand) are given below: G(C)8650A 11

155 BH No Liquid Limit (%) Plastic Limit (%) Plasticity Index (%) Standard Penetration Tests Standard Penetration Test values (N-values observed) are presented in the soil profile table no.1 to 10. The curve showing the relation between the N value and depth is given in fig no 4 and 4A. The N values indicate the soil to be in a stiff/medium dense to dense state. 7.7 Shear Test Results The cohesion obtained from consolidated drained triaxial compression test at varies between 0.13 to 0.31kg/cm² and the angle of shearing resistance k of the soil varies between 13< & 26<. 7.8 Specific Gravity The specific gravity of the soil particles are given below: BH NO Specific Gravity at Depth (m) G(C)8650A 12

156 Specific Gravity at Depth (m) BH NO Free Swell Index The free swell index of the soil particles are given below: BH NO Free Swell Index (%) at Depth (m) The above results indicate that the top soil is medium swelling nature. Hence, the excavated soil cannot be used for backfilling purposes Compiled Soil Profile G(C)8650A 13

157 An overview of the results and their analysis has been presented in the form of soil profile in Fig. No DESIGN CRITERIA - A DISCUSSION 8.1 Primary Parameters The parameters required for the design of foundation system for the proposed structure are: a) Type of foundation to be adopted b) Depth at which the foundations have to be laid/pile have to be terminated. c) Allowable bearing pressure on the soil at the foundation level/load carrying capacity of piles On the basis of the analysis of the results of investigations, the required design parameters have been arrived at and these are given in paras 8.2 to Type of Foundations The type of foundation depends on the following: a) Sub soil conditions b) Type of structure c) Configuration at loading points d) Loading intensity on each sub-structure/structural element As per the client s information, the proposed structure is residential building comprising of an open stilt floor at ground level and one or two upper floors As seen from the investigations the top 3m soil is in a soft state with N value varying between 3 and 7. Water table was encountered above the ground level due to the rains before the field investigations. Also the site is below the existing ground level by 1m. G(C)8650A 14

158 8.2.4 For the above conditions, pile foundations can be adopted for the proposed project. 8.3 Termination Depth The piles may be terminated after embedding the pile in refusal strata by 30cm. Refusal strata in the form of clayey silty sand was encountered between 3.9 and 5.1m depth. The site below the existing road by about 1m. Considering the existing ground level as cutoff level of pile the effective length of pile will be about m. 8.4 Load Carrying Capacity The load carrying capacity of different diameter piles is given in 9.1.c. 9.0 RECOMMENDATIONS 9.1 The recommendations for the proposed structure (Residential buildings comprising of an open stilt floor at ground level and one or two upper floors) are given below: a) Type of Foundations : Pile b) Termination Depth : The piles may be terminated after embedding the pile in refusal strata by 30cm. Refusal strata in the form of clayey silty sand was encountered between 3.9 and 5.1m depth. The site below the existing road by about 1m. Considering the existing ground level as cutoff level of pile the effective length of pile will be about m. c) Load Carrying Capacity : The load carrying capacity of different diameter piles is given below: Diameter of pile (mm) Load Carrying Capacity (t) G(C)8650A 15

159 Diameter of pile (mm) Load Carrying Capacity (t) CONSTRUCTION ADVISORY 10.1 The soil of each strata has been described with name, colour etc. During excavation any variation in the nature of the soil and its condition from those given in this Report should be noted and appropriate action should be taken 10.2 The excavated soil cannot be used for backfilling purposes as the soil is medium swelling type Stiff plinth beams connecting the columns in both directions may be provided which will render additional rigidity to the structure. The filler walls of the frame structure may be laid on the plinth beams REFERENCES 11.1 A list of IS codes referred for providing the recommendations and that which might be required to implement the same has been given in Appendix A LIMITATIONS 12.1 This Geotechnical investigation has been carried out at locations in the site chosen by the client as representing the entire site. The recommendations provided in this Report are hence valid only for those test locations. However, if there is any change in sub-soil conditions and properties at places between or beyond the chosen test locations, Nagadi may be contacted for further actions. Fresh investigations will have to be carried out at such locations. G(C)8650A 16

160 M L SHANKAR For NAGADI CONSULTANTS PVT. LTD. G(C)8650A 17

161 Appendix A LIST OF IS CODES Field Investigation 1. IS : : Classification and identification of soils for general engineering purposes (First Revision) (Amendment 2) 2. IS : : Code of practice for sub surface investigations for foundations (First revision) 3. IS : : Method of Standard Penetration Tests for soils (First revision) 4. IS : : Code of practice for thin walled tube sampling of soils (Second revision) Laboratory Tests 1. IS : (Part 1) : Methods of test for soils: Preparation of dry soil samples for various tests (Second revision) 2. IS : (Part 2) : Method of test for soils: Determination of water content (Second revision) Amendment 1 3. IS : (Part 3/Sec 1) : Method of test for soils : Determination of Specific Gravity : Fine grained soils. (First revision) 4. IS : (Part 3/Sec 2) : Method of test for soils : Determination of Specific Gravity : Fine, Medium & Coarse grained soils. (First revision). 5. IS : (Part 4) : Method of test for soils : Grain size analysis (Second revision) 6. IS : (Part 5) : Method of test for soils : Determination of liquid and plastic limit (Second revision) 7. IS : (Part 40) : Methods of tests for soils: Determination of free swell index of soils. Foundation Construction 1. IS : : Code of practice for design and construction of shallow foundations on soils (other than raft, ring and shell) (Second revision) 2. IS : : Code of practice for design and construction of foundation in soils: General requirements (Third revision) 3. IS : Code of practice for determination of bearing capacity of shallow foundations : First revision (Amendment 1) 4. IS (Part 1) : Code of practice for calculation of settlements of foundations : Shallow foundations subject to symmetrical static vertical loads (Amendment 2) 5. IS 2911 (Part I to IV) : Design and construction of Pile foundations. G(C)8650A 18

162 SOIL PROFILE N - Value # Depth (m) Project: Residential Villas at Thazhambur Village, Thiruporur Taluk, Kanchipuram District B.H. Location: Water Table: - 0.2m Term. Depth : 3.9m B.H. No. : 1 Soil Description Gravel (%) Grain Size Analysis Sand (%) Silt (%) Clay (%) Atterberg Limits Liquid (%) Plastic (%) In-situ properties Water Cont (%) Density * (g/cm 3 ) Type Triaxial Test c (kg/cm 2 ) N ( O ) 0.0 Ground level Brown sandy silty clay Brown sandy silty clay CD Brown sandy silty clay Change of strata Yellow clayey silty sand > Refusal strata *-Natural Bulk Density # -N Values (Observed)* G(C)8650A 1

163 SOIL PROFILE N - Value # Depth (m) Project: Residential Villas at Thazhambur Village, Thiruporur Taluk, Kanchipuram District B.H. Location: Water Table: m Term. Depth : 4.1m B.H. No. : 2 Soil Description Gravel (%) Grain Size Analysis Sand (%) Silt (%) Clay (%) Atterberg Limits Liquid (%) Plastic (%) In-situ properties Water Cont (%) Density * (g/cm 3 ) Type Triaxial Test c (kg/cm 2 ) N ( O ) 0.0 Ground level Brown sandy silty clay Brown sandy silty clay CD Brown sandy silty clay Change of strata Brownish yellow clayey silty sand > Refusal strata *-Natural Bulk Density # -N Values (Observed)* G(C)8650A 2

164 SOIL PROFILE N - Value # Depth (m) Project: Residential Villas at Thazhambur Village, Thiruporur Taluk, Kanchipuram District B.H. Location: Water Table: 0.1m Term. Depth : 4.3m B.H. No. : 3 Soil Description Gravel (%) Grain Size Analysis Sand (%) Silt (%) Clay (%) Atterberg Limits Liquid (%) Plastic (%) In-situ properties Water Cont (%) Density * (g/cm 3 ) Type Triaxial Test c (kg/cm 2 ) N ( O ) 0.0 Ground level Brown sandy silty clay Brown sandy silty clay CD Brown sandy silty clay Change of strata Brownish yellow clayey silty sand > Refusal strata *-Natural Bulk Density # -N Values (Observed)* G(C)8650A 3

165 SOIL PROFILE N - Value # Depth (m) Project: Residential Villas at Thazhambur Village, Thiruporur Taluk, Kanchipuram District B.H. Location: Water Table: - 0.1m Term. Depth : 4.6m B.H. No. : 4 Soil Description Gravel (%) Grain Size Analysis Sand (%) Silt (%) Clay (%) Atterberg Limits Liquid (%) Plastic (%) In-situ properties Water Cont (%) Density * (g/cm 3 ) Type Triaxial Test c (kg/cm 2 ) N ( O ) 0.0 Ground level Brown sandy silty clay Brown sandy silty clay CD Brown sandy silty clay Change of strata Brownish yellow clayey silty sand > Refusal strata *-Natural Bulk Density # -N Values (Observed)* G(C)8650A 4

166 SOIL PROFILE N - Value # Depth (m) Project: Residential Villas at Thazhambur Village, Thiruporur Taluk, Kanchipuram District B.H. Location: Water Table: 0.15m Term. Depth : 4.9m B.H. No. : 5 Soil Description Gravel (%) Grain Size Analysis Sand (%) Silt (%) Clay (%) Atterberg Limits Liquid (%) Plastic (%) In-situ properties Water Cont (%) Density * (g/cm 3 ) Type Triaxial Test c (kg/cm 2 ) N ( O ) 0.0 Ground level Brown sandy silty clay Brown sandy silty clay CD Brown sandy silty clay 3.0 Brown sandy silty clay CD Change of strata Brownish yellow clayey silty sand > Refusal strata *-Natural Bulk Density # -N Values (Observed)* G(C)8650A 5

167 SOIL PROFILE N - Value # Depth (m) Project: Residential Villas at Thazhambur Village, Thiruporur Taluk, Kanchipuram District B.H. Location: Water Table: - 0.1m Term. Depth : 5.1m B.H. No. : 6 Soil Description Gravel (%) Grain Size Analysis Sand (%) Silt (%) Clay (%) Atterberg Limits Liquid (%) Plastic (%) In-situ properties Water Cont (%) Density * (g/cm 3 ) Type Triaxial Test c (kg/cm 2 ) N ( O ) 0.0 Ground level Brown sandy silty clay Brown sandy silty clay CD Brown sandy silty clay Change of strata 4.0 Brownish yellow clayey silty sand CD Brownish yellow clayey silty sand > Refusal strata *-Natural Bulk Density # -N Values (Observed)* G(C)8650A 6

168 SOIL PROFILE N - Value # Depth (m) Project: Residential Villas at Thazhambur Village, Thiruporur Taluk, Kanchipuram District B.H. Location: Water Table: At G.L Term. Depth : 4.3m B.H. No. : 7 Soil Description Gravel (%) Grain Size Analysis Sand (%) Silt (%) Clay (%) Atterberg Limits Liquid (%) Plastic (%) In-situ properties Water Cont (%) Density * (g/cm 3 ) Type Triaxial Test c (kg/cm 2 ) N ( O ) 0.0 Ground level Brown sandy silty clay Brown sandy silty clay CD Brown sandy silty clay 3.0 Change of strata CD Brownish yellow clayey silty sand 4.0 Brownish yellow clayey silty sand > Refusal strata *-Natural Bulk Density # -N Values (Observed)* G(C)8650A 7

169 SOIL PROFILE N - Value # Depth (m) Project: Residential Villas at Thazhambur Village, Thiruporur Taluk, Kanchipuram District B.H. Location: Water Table: m Term. Depth : 4.9m B.H. No. : 8 Soil Description Gravel (%) Grain Size Analysis Sand (%) Silt (%) Clay (%) Atterberg Limits Liquid (%) Plastic (%) In-situ properties Water Cont (%) Density * (g/cm 3 ) Type Triaxial Test c (kg/cm 2 ) N ( O ) 0.0 Ground level Brown sandy silty clay Brown sandy silty clay CD Brown sandy silty clay 3.0 Brown sandy silty clay CD Change of strata Brownish yellow clayey silty sand > Refusal strata *-Natural Bulk Density # -N Values (Observed)* G(C)8650A 8

170 SOIL PROFILE N - Value # Depth (m) Project: Residential Villas at Thazhambur Village, Thiruporur Taluk, Kanchipuram District B.H. Location: Water Table: - 0.1m Term. Depth : 4.8m B.H. No. : 9 Soil Description Gravel (%) Grain Size Analysis Sand (%) Silt (%) Clay (%) Atterberg Limits Liquid (%) Plastic (%) In-situ properties Water Cont (%) Density * (g/cm 3 ) Type Triaxial Test c (kg/cm 2 ) N ( O ) 0.0 Ground level Brown sandy silty clay Brown sandy silty clay CD Brown sandy silty clay Change of strata 4.0 Brownish yellow clayey silty sand CD > Refusal strata *-Natural Bulk Density # -N Values (Observed)* G(C)8650A 9

171 SOIL PROFILE N - Value # Depth (m) Project: Residential Villas at Thazhambur Village, Thiruporur Taluk, Kanchipuram District B.H. Location: Water Table: m Term. Depth : 5.2m B.H. No. : 10 Soil Description Gravel (%) Grain Size Analysis Sand (%) Silt (%) Clay (%) Atterberg Limits Liquid (%) Plastic (%) In-situ properties Water Cont (%) Density * (g/cm 3 ) Type Triaxial Test c (kg/cm 2 ) N ( O ) 0.0 Ground level Brown sandy silty clay Brown sandy silty clay CD Brown sandy silty clay Change of strata 4.0 Brownish yellow clayey silty sand CD Brownish yellow clayey silty sand > Refusal strata *-Natural Bulk Density # -N Values (Observed)* G(C)8650A 10

172 1 N N BH 1 BH 8 BH 7 BH 6 BH 2 BH 5 BH 9 BH 10 BH 4 BH 3 G(C)8650A

173 E.G.L. BH 1 BH 2 BH 3 BH 4 BH 5 BH 6 BH 7 BH 8 BH 9 BH U U U 7 1 U U 1 1 U 2 1 U 4 1 U 6 1 U 9 1 U 10 1 DEPTH IN METRES R -6 ->50 R -6 ->50 KEY R -5 ->50 R -7 ->50 U 5 2 R >50 U 6 2 R >50 U 7 2 R -5 ->50 U 8 2 R >50 U 9 2 R -7 ->50 U 10 2 R >50 Brownish yellow Sandy (15-17%) Silty (30-32%) Clay (51-55%) Brown Clayey (18-21%) Silty (22-32%) Sand (47-60%) Water table 3 'N' Value (Observed) U 2-1 st undisturbed sample in 1 Borehole No. 2 Refusal strata COMPILED SOIL PROFILE NAGADI CONSULTANTS PRIVATE LIMITED GEOTECHNICAL CONSULTANTS Delhi : 011 (T) (F) [email protected] Bangalore : 080 (T) (F) [email protected] Chennai : 044 (T) (F) [email protected] Secunderabad : 040 (T) (F) [email protected] SOIL INVESTIGATION FOR RESIDENTIAL VILLAS AT THAZHAMBUR VILLAGE, THIRUPORUR TALUK, KANCHIPURAM DISTRICT Job No. : G(C)8650A Sheet No. : 2

174 G(C)8650A percentage finer Line Style Clay Silt grain size (mm) Bore Depth Gravel Sand Silt Clay Description d hole (m) (%) (%) (%) (%) 60 d 10 U sandy silty clay clayey silty sand sandy silty clay clayey silty sand sandy silty clay clayey silty sand sandy silty clay clayey silty sand Sand Fine Medium Coarse Fine Gravel Coarse

175 percentage finer Clay Silt grain size (mm) Sand Fine Medium Coarse Fine Gravel Coarse 3A G(C)8650A Line Style Bore Depth Gravel Sand Silt Clay Description hole (m) (%) (%) (%) (%) d 60 d 10 U sandy silty clay clayey silty sand sandy silty clay clayey silty sand sandy silty clay clayey silty sand sandy silty clay clayey silty sand

176 percentage finer Clay Silt grain size (mm) Sand Fine Medium Coarse Fine Gravel Coarse Line Style Bore Depth Gravel Sand Silt Clay Description hole (m) (%) (%) (%) (%) d 60 d 10 U sandy silty clay clayey silty sand sandy silty clay clayey silty sand G(C)8650A 3B

177 SPT Values (Observed) Legend BH 1 1 BH 2 BH 3 BH 4 2 BH 5 Depth (m) SPT Values (Observed) Vs Depth Curves G(C)8650A 4

178 SPT Values (Observed) Legend BH 6 1 BH 7 BH 8 BH 9 2 BH 10 Depth (m) SPT Values (Observed) Vs Depth Curves G(C)8650A 4A

179 TECHNICAL DATA For SAGE TREATMENT PLANT 250 KLD pdfmachine A pdf writer that produces quality PDF files with ease! Produce quality PDF files in seconds and preserve the integrity of your original documents. Compatible across nearly all Windows platforms, simply open the document you want to convert, click print, select the Broadgun pdfmachine printer and that s it! Get yours now!

180 TABLE OF CONTENTS 1. Introduction 2. Process Design Basis 3. Unit Details, Salient Features and Operation pdfmachine A pdf writer that produces quality PDF files with ease! Produce quality PDF files in seconds and preserve the integrity of your original documents. Compatible across nearly all Windows platforms, simply open the document you want to convert, click print, select the Broadgun pdfmachine printer and that s it! Get yours now!

181 1.0 Introduction 1.1 Preamble The plant is designed to treat up to 250 m3/day of sewage to the desired quality, to be either used for gardening, or to be discharged as per the norms of the Tamilnadu State Pollution Control Board. 1.2 Sources of Waste Water/Sewage The raw sewage is generated from various sources/units of the unit (i.e) toilets, etc. 1.3 Objectives of Sewage Treatment Plant The primary objectives of the plant can be summarised as follows: Screening of raw sewage to remove the large, floating matter or Debris. Homogenisation of screened sewage to even out the variations in the flow and pollutant concentrations, if any. Single-stage aerobic biological treatment to oxidise (treat) the majority of organics contributing to BOD/COD. Tertiary treatment, comprising of disinfection, and subsequent filtration to remove the residual suspended solids, organic traces, and odour. Dewatering and drying of the sludge prior to disposal. 1.4 Treatment Philosophy The sewage treatment plant has been designed based on the following criteria: The raw sewage is passed through a MS Bar Screen to remove the large, floating debris and other matter, which might otherwise cause choking of the downstream pipelines and units. The screened sewage is collected in the Equalisation Tank. The Equalisation Tank provided with Coarse Bubble diffusers, used for mixing/aerating the raw sewage. This process helps to even out any variations in the flow and pollutant concentration, and maintains the sewage in an aerobic condition. The homegenised sewage is constantly pumped to the Aerobic Biological Treatment System, comprising of Aeration Tank and Secondary Clarifier Tank with recirculation facility. In this process, the majority of organic matter present is oxidised by the bacterial biomass in the system. Aeration for mixing and oxidation is done by Diffused Aeration Process (fine pore diffusers). pdfmachine A pdf writer that produces quality PDF files with ease! Produce quality PDF files in seconds and preserve the integrity of your original documents. Compatible across nearly all Windows platforms, simply open the document you want to convert, click print, select the Broadgun pdfmachine printer and that s it! Get yours now!

182 The overflow from the Secondary Settling tank (biological system) is collected in the Clarified water tank, and then pumped passed through the Pressure Sand Filter, Activated Carbon Filter to remove the residual suspended solids, organic traces and odour, is then chlorinated for disinfection. The treated water is collected in the Final Sump. The Treated water from Final Sump (outlet of ACF) can be used for gardening through Final Pumping System. The excess bio-sludge from the Secondary Clarifier tank (biological system) is let out to sludge drying beds for drying. The dried sludge can be used as manure. pdfmachine A pdf writer that produces quality PDF files with ease! Produce quality PDF files in seconds and preserve the integrity of your original documents. Compatible across nearly all Windows platforms, simply open the document you want to convert, click print, select the Broadgun pdfmachine printer and that s it! Get yours now!

183 2.0 Process Design Basis 2.1 Design Capacity The plant is designed to treat a maximum of 250 m3/day of sewage. 2.2 Influent/Effluent Quality Parameters Raw and Treated Sewage Characteristics SI.No Parameters Units Inlet Sewage Quality Treated Water Quality (after ACF) 1.0 ph to BOD5 mg / ltr < COD mg / ltr < TSS mg / ltr 400 < Utilities and Specifications of Utilities Electric Power Normal Design Voltage fluctuations +/- 5.5% +/- 5% for 415 V system +/- 5% +/- 5% for 3.3 kv system +/- 3% +/- 3% Voltage levels for motors and other users: 415 V for all motors having rating lower than 150 kw. 240 V for motors less than 0.18 kw & hand power tools, lighting, L.T. 110 V for instrumentation. 2.4 Service Water & Drinking Water Service water at adequate pressure is to be available at the sewage treatment plant for chemical preparation and other miscellaneous uses. 2.5 Technical Write-up for Sewage Treatment Plant Primary Treatment System Raw sewage piped from various sources flows and passing through the Bar Screen, to remove the large floating matter present in the sewage, which would otherwise cause choking of the downstream pipelines and units. The collected sewage is in the Equalisation tank. Coarse bubble aeration system is provided in the Equalisation tank to aerate and mix the contents. In the equalization tank, sufficient detention time is provided to even out the variations in the flow and pollutant concentrations. A Coarse bubble aeration pdfmachine A pdf writer that produces quality PDF files with ease! Produce quality PDF files in seconds and preserve the integrity of your original documents. Compatible across nearly all Windows platforms, simply open the document you want to convert, click print, select the Broadgun pdfmachine printer and that s it! Get yours now!

184 system is provided to agitate the contents of the tank, and maintain it in an aerobic condition. Single Stage Biological Treatment Extended Aeration Activated Sludge System (EA-AS): The content of the equalization tank is constantly pumped to the Aeration Tank, for the single-stage biological treatment. In the aeration tank, the bio-oxidation of the organics takes place in the presence of heterotrophic bacterial cultures. The system is designed based on the Activated Sludge Process. The activated sludge process involves the production of an activated mass of microorganisms capable of stabilizing the waste aerobically. A mixture of organic waste and recycled activated sludge is introduced at the head end into the reactor, where an aerobic bacterial culture is maintained in suspension. The contents of the reactor are referred to as the Mixed Liquor. The aerobic environment in the reactor is achieved by the use of Diffused Aeration, which also serves to maintain the mixed liquor in a completely mixed regime. Air application is uniform throughout the tank length. During the aeration period, the processes of adsorption, flocculation, and oxidation of the organic matter takes place. The conversion of the organics by the bacterial culture follows the steps given below : Oxidation and Synthesis COHNS + O 2 + Nutrients Bacteria --> CO 2 + NH 3 + C 5 H 7 NO 2 (Organics) ( New Bacterial cells) + Other end products. Endogenous Respiration C 5 H 7 NO O 2 -- Bacteria --> 5 CO H 2 O + NH 3 + Energy. To meet the discharge requirements of the suspended solids and BOD associated with the volatile suspended solids in the sewage, it is necessary to separate the mixed liquor solids from the treated sewage in the secondary settling tank and to return a portion of it to the reactor. The recycle of the portion of settled sludge helps to maintain the desired concentration of organisms in the reactor, with the excess portion being wasted on to the sludge drying beds. The portion wasted corresponds to the growth of new cell tissue. After completion of the bio oxidation, the contents of the aeration tank flow by gravity to the Secondary Clarifier Tank for separation of the carry over biomass from the treated sewage. pdfmachine A pdf writer that produces quality PDF files with ease! Produce quality PDF files in seconds and preserve the integrity of your original documents. Compatible across nearly all Windows platforms, simply open the document you want to convert, click print, select the Broadgun pdfmachine printer and that s it! Get yours now!

185 Details on Plastic media: Plastic media: Random packed PP / Plastic media has wide application in biological treatment systems. The media provides optimum effective surface area for biological growth. The three dimensional liquid distribution due to unique dimensional design, increases hydraulic Retention time and ensures excellent gas liquid distribution within the packed bed reactor, thus enhancing the treatment efficiency. When installed in random configuration, it maintains uniform passage of air and waste water in all direction throughout a 360 deg field. The orientation is such that no surface generates a continuous vertical or horizontal position. Air Supply / Mixing System Diffused Aeration is used for the supply of air. In this process, as the supply of available substrate (food) is depleted, the microorganisms, in an endogenous growth phase, begin to oxidize their own cell tissues to obtain energy for cell maintenance reactions. The oxidation products are carbon dioxide, water and ammonia, which in turn is subsequently oxidized to nitrate as digestion proceeds. The resulting overall reaction is given by the following equation: C 5 H 7 NO O 2 --> 5 CO 2 + NO 3 ion + 3 H 2 O + H ion. Tertiary Treatment The treated sewage from the secondary settling tank is collected in the Clarified water tank where oxidises the remaining traces of organic matter present. The treated sewage is then pumped through Pressure Sand Filter and Activated Carbon Filter, for removal of the traces of suspended solids and organics respectively. This water is generally have desired characteristics required for water to be used on irrigation land with 92-95% of BOD5 removed. Sludge recirculation & excess sludge disposal: Sludge recirculation system for re circulating settled activated sludge from sec clarifier back to aeration tank and comprising either direct pumping from clarifier or pumping from a separate sludge sump into which the clarifier sludge drains. The excess sludge generated in collected in a separate tank called aerobic digester where in the sludge in further digested & thickened. The thickened sludge either put on sludge holding tank or taken out as cares through a filter press. Such dried sludge is good manure. pdfmachine A pdf writer that produces quality PDF files with ease! Produce quality PDF files in seconds and preserve the integrity of your original documents. Compatible across nearly all Windows platforms, simply open the document you want to convert, click print, select the Broadgun pdfmachine printer and that s it! Get yours now!

186 3.0 Unit Details and Salient Features In this section the various units of the plant are listed, their objective explained, salient features of the units given and the normal operational procedure defined with precautions to be followed listed. The sections have been organised in sequential manner with connected sub units being placed under one section. Design Calculation for 250 Kld Stp Extended Aeration Activated Sludge System. No. of STP : 1 Nos Plant capacity : 250 KLD Operation hours : 24 hrs Flow rate : 10.4 m 3 /hr 3.1 Bar Screen Chamber Objective The main objective of the bar screen chamber is to retain the large-sized floating matter present in the raw sewage. Floating matter that is retained in the bar screen has to be manually cleaned. Bar Screen Design: Flow Rate Average Flow Rate/Hr Peaking Factor (max) Peak Flow Velocity through Bar Screen Chamber Area of Bar Screen (Peaking Factor / (3600/V) : 250 cum/day : cum/hr : 2 Times : cum/hr : 0.8 m/sec : Sq.m Adopting Screen flat size 6mm thk & 8mm opening Area (area of bar screen x 20/6) Assuming inclination of screen Is 60 degrees Area (area of flat/ sin 60) : Sq.m : cum Hence area of screen : cum 3.2 Equalization Tank Objective The main objective of the equalisation tank is to receive the sewage from the various sources, to hold the same and to even out the variations in flow and quality. It gives the following benefits: pdfmachine A pdf writer that produces quality PDF files with ease! Produce quality PDF files in seconds and preserve the integrity of your original documents. Compatible across nearly all Windows platforms, simply open the document you want to convert, click print, select the Broadgun pdfmachine printer and that s it! Get yours now!

187 Performance of the biological treatment is enhanced, because shock loading is eliminated or minimised, and inhibiting substances diluted. The sewage quality and thickening performance of the secondary settling tank following biological treatment is improved through constant solids loading. Helps to reduce the size and cost of down stream treatment facilities. The equalisation tank is provided with fine pore diffused aeration system to mix and aerate the contents. Tank Details No. Of units : 1 No. Flow : 250 cum/day M.O.C : RCC Mixing / Aeration System Type : Coarse Bubble Diffused Aeration System Number of Membranes : 11 Nos. (0.8 M Long) Air Source : Twin Lobe Air Blowers Equalization Tank Design: Required hydraulic retention Capacity (HRT) Flow Rate Average Flow Rate/Hr Required Min Equalization tank Cap : 6 Hrs : 250 cum/day : cum/hr : 62.5 cum Operation The equalisation tank shall normally operate on the fill and draw principle providing sufficient residence time at full flow conditions prior to the wastewater going to the downstream treatment units. The operation of the transfer pumps from the equalisation tank is to be controlled by built in level float switches. Raw Effluent Transfer Pumps Objective The objective of the Equalized sewage transfer pumps is to pump the sewage from the equalisation to the aeration tank at the required rate, equivalent to approximately the average flow rate of the plant. Pump Specifications To transfer the sewage from EQT to AT Capacity of pumps : cum/hr (1 Working + 1 Stand By) : 2Nos Units pdfmachine A pdf writer that produces quality PDF files with ease! Produce quality PDF files in seconds and preserve the integrity of your original documents. Compatible across nearly all Windows platforms, simply open the document you want to convert, click print, select the Broadgun pdfmachine printer and that s it! Get yours now!

188 Operation The equalised sewage transfer pumps shall normally be operated by the level controller (Floating Switch in built with pumps), which will switch on the pump at the high level of the equalisation tank and switch off the pump at low level. 3.3 Aeration Tank Objective The aeration tank is used to remove the oxygen-consuming organic matter from the sewage by biological treatment. Diffused aeration is used for supplying aircontaining oxygen. The bubbles produced from the diffusers are of extremely small size. Thus the total surface area that interacts with the sewage is very large and the contact time of bubbles is also long due to the slow rise rate of the bubbles. The system is thus extremely efficient in terms of oxygen transfer efficiency. The flow of fine bubbles provides a gentle mixing, which prevents floc shear. This results in increased efficiency of the settling tank and higher sludge concentration. Each diffuser consists of a porous membrane, made of EPDM rubber. Each diffuser is fully supported over the length and circumference with a 90 mm PVC membrane support frame. Tank Details No. Of units : 1 No. Flow : 250 cum/day M.O.C : RCC Aeration System Type : Fine Pore Diffused Aeration System Number of Membranes : 32 Nos. (1.0 M Long) M.O.C of Membranes : EPDM Air Source : Twin Lobe Air Blowers Aeration Tank Design: Flow rate : 250 cum cum/day Inlet BOQ : 250 Mg/L Taken BOD for design : 350 Mg/L Outlet BOQ : 20 Mg/L Removal Efficiency (BOD) : (Approx.) Minimum AT required Volume : 8.33 cum pdfmachine A pdf writer that produces quality PDF files with ease! Produce quality PDF files in seconds and preserve the integrity of your original documents. Compatible across nearly all Windows platforms, simply open the document you want to convert, click print, select the Broadgun pdfmachine printer and that s it! Get yours now!

189 Diffused Aeration system (DAS) Flow Rate Average Flow rate / Hr Max Inlet BOD Total BOD (Average flow rate x Inlet BOD) Required Oxygen (In BOD x Total BOD) : 250 cum/day : cum/hr : 350 Mg/L : kg/hr : 7.29 kg/hr Operation The aeration tank operates on the overflow principle. Constant aeration and mixing of the contents is required to ensure complete mix of the biomass and the wastewater. Aeration also prevents septic conditions. In the aeration tank, the bio-oxidation of the organics takes place in the presence of heterotrophic bacterial cultures. The system is designed based on the Activated Sludge Process. 3.4 Twin Lobe Air Blowers Objective The purpose of the twin lobe air blowers is to provide a source of compressed air for the fine bubble diffused aeration / mixing system in the aeration and equalisation tanks. The blowers are complete with accessories such as suction filter, suction and discharge silencer, pressure gauge, pressure relief valve, non return valve, etc. Blower Specifications Quantity : 2 Nos. (1 OP + 1 SB) Type : Twin lobe Capacity : m 3 / hr Operation The air blowers need to be operated on a continuous basis. A minimum of one blower should be kept always in operation. 3.5 Secondary Clarifier Tank Objective The main objective of the secondary clarifier tank is to separate water and sludge and help in achieving a high underflow suspended solids concentration for recirculation purpose. pdfmachine A pdf writer that produces quality PDF files with ease! Produce quality PDF files in seconds and preserve the integrity of your original documents. Compatible across nearly all Windows platforms, simply open the document you want to convert, click print, select the Broadgun pdfmachine printer and that s it! Get yours now!

190 Tank Details No. of units : 1 No. Design flow : 250 cum/day MOC : RCC Secondary Clarifier Tank Design: Flow Rate : 250 cum/day Average Flow rate/hr : cum/hr Required over flow rate SCT area required (area flow/flow over flow) : 0.65 cum/sq.m/hr : sq.m Min Diameter : 4.0 M 3.6 Sludge Recycle Pumps Objective The purpose of the sludge recycle pumps is to transfer the settled sludge from the bottom of the settling tank to the aeration tank. These pumps also transfer the excess sludge from the settling tank to the Aerobic Digester. Pump Specifications Quantity : 2 Nos. (1 OP + 1 SB) Capacity : cum/hr (1 Working + 1 Stand By) Operation The sludge pumps are operated on a continuous basis. The frequency of desludging depends on the quantity of excess sludge produced. 3.7 Clarified Water Tank Objective The purpose of this tank is to collect the water overflowing from the settling tank and Tank Details No. of units Flow M.O.C : 1 No. : cum/day : RCC pdfmachine A pdf writer that produces quality PDF files with ease! Produce quality PDF files in seconds and preserve the integrity of your original documents. Compatible across nearly all Windows platforms, simply open the document you want to convert, click print, select the Broadgun pdfmachine printer and that s it! Get yours now!

191 Clarified Water Tank Design: HRT of Clarifier water sump : 6 Hrs Average Flow Rate /Hr : cum/hr Capacity of the Clarified water sump : 62.5 cum 3.8 Filter Feed Pumps Objective The purpose of the filter feed pumps are to transfer the clarified water from the clarified water tank to the filtration system comprising of Pressure sand filter, Activated Carbon Filter. Pump Specifications Quantity : 2 Nos. (1 OP + 1 SB) Capacity : 15.6 cum/hr FFP Operation hrs/day : 16 hrs Motor Specifications Quantity : 2 Nos. (1 OP + 1 SB) Rating : 2 HP Speed : 2400 rpm Operation The filters feed pumps are operated for the 15 hours, also depending on the amount of water to be pumped. 3.9 Pressure Sand Filter (PSF) Objective The purpose of the PSF is to remove the residual suspended solids present in the treated sewage. Filter Details Quantity Flow Filtration rate Size Media used M.O.C : 1 No. : 15.6 m 3 /Hr : 12 cum/hr/sq.m : 1300 mm Dia X 1500 mm HOS. : Grade sand supported on a bed of pebbles. : Mild Steel, anticorrosive painted. pdfmachine A pdf writer that produces quality PDF files with ease! Produce quality PDF files in seconds and preserve the integrity of your original documents. Compatible across nearly all Windows platforms, simply open the document you want to convert, click print, select the Broadgun pdfmachine printer and that s it! Get yours now!

192 Operation The PSF is operated for 14 to 16 hours a day. The operation of the PSF has two phases/ cycles the normal operation / filtration phase and the backwash phase. The frequency of backwashing is: Once a day OR When the differential pressure reaches 0.8 ksc, whichever is earlier Activated Carbon Filter (ACF) Objective The purpose of the ACF is to remove the residual organics and to remove the free chlorine present in the filtered water. Filter Details Quantity Flow Size Filtration rate Media used M.O.C : 1 No. : 15.6 m 3 /hr : 1300 mm Dia X 1500 mm HOS. : 12 cum/hr/sq.m : Activated Carbon supported on a bed of pebbles. : Mild Steel, anticorrosive painted. Operation The ACF is operated for 14 to 16 hours a day. The operation of the ACF has two phases/ cycles the normal operation / filtration phase and the backwash phase. The frequency of backwashing is once a day UV STERLIZER for Disinfection 15 Watts/m 3 of waste water For m 3 of waste water = 15 x = watts required for disinfection 1 UV lamp has 39 watts No. of UV lamps required : 156.3/39 4 nos of UV lamps required For disinfecting m3 Of waste water 3.12 FINAL SUMP After UV treatment the treated and filtered water is collected in this sump until used for further disposal for landscaping or other re-use. The line diagram with the layout plan of the STP is enclosed. pdfmachine A pdf writer that produces quality PDF files with ease! Produce quality PDF files in seconds and preserve the integrity of your original documents. Compatible across nearly all Windows platforms, simply open the document you want to convert, click print, select the Broadgun pdfmachine printer and that s it! Get yours now!

193 3.13 L.T. Panel There are no special process or technological checks required for operating the L.T. Panel, except for normal safety and precautions required for operating L.T electrical systems. Normal preventive maintenance and routine checks to confirm the working of all relays, contractors and instrumentation should be followed as per State Electricity board guidelines and code of practice. Dewatering System a) Filter Press Flow rate BOD (in) Concentration of sludge Total sludge produced Sludge to be wasted : 250 cum/day : 350 Mg/L concentration : cum/day : cum/day 3038 Ltrs/Day b) Filter Press Feed Pump Excess Sludge Produced from recirculation line : 3.03 cum/day No. of Batch Per Day : 3 Pumping Time per Batch : 3 Pump Cap Approx. : 0.34 cum/hr CIVIL TANK DESIGN FOR 85 KLD The following civil work to be executed by client: S.I.No Unit Size 85 m3/day capacity Quantity 1. Screen Chamber 1.5 x 0.5 x 0.6 M 1 No. 2. Raw Sewage Collection Sump 5.7 x 5.4 x 2.0 M LD 1 No. 3. Aeration Tank 10.8 x 5.4 x 3.5 M SWD 1 No. 4. Secondary Settling Tank 4.0 x 4.0 x 2.5 M SWD 1 No. 5. Clarified Water Tank 4.0 x 5.4 x 2.9 M LD 1 No. 6. Sludge Holding Tank 4.0 x 1.20 x 3.5 M LD 1 No. 7. Treated Water Tank 4.8 x 5.4 x 3.5 M LD 1 No pdfmachine A pdf writer that produces quality PDF files with ease! Produce quality PDF files in seconds and preserve the integrity of your original documents. Compatible across nearly all Windows platforms, simply open the document you want to convert, click print, select the Broadgun pdfmachine printer and that s it! Get yours now!

194 pdfmachine A pdf writer that produces quality PDF files with ease! Produce quality PDF files in seconds and preserve the integrity of your original documents. Compatible across nearly all Windows platforms, if you can print from a windows application you can use pdfmachine. Get yours now! TO EQT SLUDGE DISPOSAL

195 pdfmachine A pdf writer that produces quality PDF files with ease! Produce quality PDF files in seconds and preserve the integrity of your original documents. Compatible across nearly all Windows platforms, if you can print from a windows application you can use pdfmachine. Get yours now!