Barapullah Elevated Road (Phase-III) From Sarai Kale Khan to Mayur Vihar(Phase-I), New Delhi Public Works Department (Govt. of NCT of Delhi) Conceptual Plan INTRODUCTION M/s Public Works Department, Delhi is the premier agency of Govt. of NCT of Delhi engaged in planning, designing, construction and maintenance of Government assets in the field of built environment and infrastructure development. Assets in built environment include Hospitals, Schools, Colleges, Technical Institutes, Police Buildings, Prisons, Courts etc; assets in infrastructure development include Roads, Bridges, Flyovers, Footpaths, Subways, Foot Over Bridges etc. PWD Delhi also sustains and preserves these assets through a well developed system of maintenance which includes amongst others specialized services like rehabilitation works, roads signage and aesthetic treatments like interiors, monument lighting, landscaping etc. It has its office at F-21, PWD, GNCTD, Sarai Kale Khan, Opp. Indraprastha Park, New Delhi- 110013. The PWD, Delhi has decided to develop an Elevated Road over the Barapullah Nalah starting from Sarai Kale Khan to Mayur Vihar(Phase-I), New Delhi. The PWD has acquired approvals from all authorities including DDA and DUAC vide F. No. 19(3)2013-DUAC and F. No. F.1.(2)2013/ UTTIPEC/44th/D-237 respectively. The site is ideal for the proposed project, as the current route connecting the two points comprises of very heavy traffic during the peak hours. After the proposed project comes under operation, the distance between the two points will be reduced by around 60%. The traffic volume on the existing stretch will also be reduced considerably. Thus the proposed project will help commuters save fuel and time, and consequently it will reduce carbon footprints. SITE LOCATION AND SURROUNDINGS The proposed project site is located at a stretch starting from Sarai Kale Khan to Mayur Vihar (Phase-I), New Delhi. The Co-ordinate of the project site is 28°34'55.33"N, 77°15'34.48"E to 28°36'10.23"N, 77°17'20.46"E. PROJECT STRETCH Figure-1: Google image showing the project site Prepared by:- Mantec Consultants Pvt. Ltd. Page 45 Barapullah Elevated Road (Phase-III) From Sarai Kale Khan to Mayur Vihar(Phase-I), New Delhi Public Works Department (Govt. of NCT of Delhi) Conceptual Plan The nearest highway is NH-1 which is adjacent to the project site in West direction from project site. The nearest railway station is Hazrat Nizamuddin Railway Station at a distance of approximately 1 km towards NW of the proposed project site. The nearest airport is Indira Gandhi International Airport situated at a distance of approximately 16 km towards SWW of the project site. PROJECT LAYOUT AND ENVIRONMENTAL CONTEXT The total built-up area of the proposed project including existing area of UP Link road to be modified for elevated road is 1,50,238 m2 (37.125Acres). The detailed Area Statement is provided below in Table-1. SALIENT FEATURES OF PROJECT: Salient features of the project are as follows:- Table 1: Salient Features S. No. Particulars Details 1. Project Name Barapullah Elevated Road (Phase-III) From Sarai Kale Khan to Mayur Vihar (Phase-I), New Delhi 2. Activity at the site Elevated Road & bridge over river Yamuna 3. Length of the Stretch 3.5 Kms 4. Built-up Area 150238 m2, including modernization of existing UP Link Road. 5. Power Requirement & Sources 1500 KVA, from BSES (backup through DG Sets)(Permission attached as annexure) 6. No. of DG Sets 3 DG sets of total capacity of 1500 KVA (3 x 500 KVA) 7. Water requirement & Sources Total water Requirement: 75 KLD Source: Ground Water(Permission attached as annexure) 8. Sewage Treatment & Disposal The total number of workers i.e. 800 people shall generate around 16 KLD of sewage which shall be treated in septic tanks connected to water recycling chambers. The recycled water hence generated shall be used for greenbelt development and dust suppression. 9. Solid Waste Generated 120 Kg/day 10. Estimated number of Workers 800 11. Proposed Greenbelt Area Compensatory plantation to be carried out by PWD is 2650 plants/trees which shall cover an area of 17,650 m2 Prepared by:- Mantec Consultants Pvt. Ltd. Page 46 Barapullah Elevated Road (Phase-III) From Sarai Kale Khan to Mayur Vihar(Phase-I), New Delhi Public Works Department (Govt. of NCT of Delhi) Conceptual Plan 12. Cost of the project Rs. 1260.63 Crores NUMBER OF EMPLOYEES DURING CONSTRUCTION PHASE The Total number of employees which will be deployed for the construction of the project will be 800. The detailed Employee breakup is given below in the following Table-2. Table-2: Employee/staff break up SL. No. Category Number 1. Manager(including senior and junior Project 20 Manager and site Engineers in charge) 2. Supervisor 20 3. Office Assistants and transport supervisor 50 4. Daily wages/workers 710 TOTAL 800 PROJECT COST The total estimated cost of the project is Rs. 1260.63 Crores including all the development costs. WATER REQUIREMENT The water requirement shall be met by bore-wells (ground water). Total water requirement for the project will be approximately 75 KLD, out of which 20 KLD shall be used for domestic purpose. The requirement for the greenbelt development and dust suppression shall be fulfilled by recycled water generated from the water recycling tanks. The daily water requirement calculation is given below in Table 3. Table-3: Calculations for Daily Water Demand Water Water Waste-Water SL. Particulars Consumption Requirement Generated No. Rate (KLD) (KLD) (KLD) Batching 1. 60 60 5 plant/curing 2. Employees (800) 25L/Day 20 16 Greenbelt 3. Development 3 L/plant/Day 7.9(say 8) 00 (2650 plants) Dust Suppression 4. 2 L/ m2 7 00 (3500 m2) 5. Total 95 KLD(75+20 KLD) 21 Prepared by:- Mantec Consultants Pvt. Ltd. Page 47 Barapullah Elevated Road (Phase-III) From Sarai Kale Khan to Mayur Vihar(Phase-I), New Delhi Public Works Department (Govt. of NCT of Delhi) Conceptual Plan Total Requirement (75 KLD) 55 KLD from bore-wells Domestic Use Batching (20 KLD) Plant/Curing 5 KLD (55+5 KLD) Recycled Water Pumped Back Process water from rinsing Washing and others Drinking Flushing (5 KLD) (5 KLD) (3 KLD) (12 KLD) @80% Water recovered in Water Recycling Chamber Greenbelt (16 KLD) Development (8 KLD) Losses (1 KLD) 8 KLD Total Recycled Water For Greenbelt Dust Generated Development Suppression (15 KLD) (7 KLD) 7 KLD For Dust Suppression Figure 2-Water Balance Diagram Sewage Generation & Treatment during construction phase: The sewage generated will be treated in proposed water recycling tanks. 15 KLD of recycled water will be obtained from the water recycling chamber which will be used for greenbelt development and dust suppression. Prepared by:- Mantec Consultants Pvt. Ltd. Page 48 Barapullah Elevated Road (Phase-III) From Sarai Kale Khan to Mayur Vihar(Phase-I), New Delhi Public Works Department (Govt. of NCT of Delhi) Conceptual Plan Table-4: Calculation of Wastewater Generation Details Water (KLD) Water requirement for domestic purpose 20 Wastewater generated from domestic use 16 Recycled water from water recycling tank 15 available for use 1.Greenbelt Development: 8 KLD Use of Recycled Water 2.Dust Suppression: 7 KLD Hence, Zero discharge will be achieved from the proposed project. SEPTIC TANKS A septic tank is a key component of a septic system, a small-scale sewage treatment system common in areas that lack connection to main sewage pipes provided by local governments or private corporations. Other components, generally controlled by local governments, may include pumps, alarms, sand filters, and clarified liquid effluent disposal methods such as a septic drain field, ponds, natural stone fiber filter plants or peat moss beds. The project proponent has proposed 6 numbers of septic tanks of total capacity 260 m3 (260000 litres). Capacity Sl. No. Location (m3) 1. Sarai Kale Khan 50 2. Sarai Kale Khan 50 3. Sarai Kale Khan 30 4. Mayur Vihar 40 5. Mayur Vihar 40 6. Power Grid 50 Total 260 The retention time of the septic tanks is 22 hours. Design Specification A septic tank consists of three concrete tanks of adequate capacity. Prepared by:- Mantec Consultants Pvt. Ltd. Page 49 Barapullah Elevated Road (Phase-III) From Sarai Kale Khan to Mayur Vihar(Phase-I), New Delhi Public Works Department (Govt. of NCT of Delhi) Conceptual Plan One end of the first tank (anaerobic settling chamber) is connected to an inlet wastewater pipe and the outlet end of the tank is connected to aeration chamber .The relatively clear water passes to the clarification tank from which the clear effluent is disposed to the septic drain field with the help of an effluent pump. Generally these pipe connections are made with a T pipe, allowing liquid to enter and exit without disturbing any crust on the surface. The design of the tank usually incorporates three chambers; each equipped with a manhole cover, and separated by a dividing wall with openings located about midway between the floor and roof of the tank. The retention time (RT) of the septic tank is usually 1 to 3 days. A longer retention time is chosen to minimize cleaning frequency (running costs). A shorter retention time is chosen to minimise tank size and initial cost. Larger tanks allow the sewage more time to digest and thus reduce the load on the drainage system. Smaller tanks (< 6m3) need longer retention times due to increased turbulence (i.e. 2 or 3 days.) Settlement Chamber Wastewater enters the first chamber of the tank, allowing solids to settle and scum to float. The time taken by the wastewater is about 3 hrs after which the comparatively clear water (from the settling zone) enters to the aeration chamber.