Pre-Feasibility Report for Construction of Parallel Taxi Track at Dabolim Airport, Goa
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PRE-FEASIBILITY REPORT FOR CONSTRUCTION OF PARALLEL TAXI TRACK AT DABOLIM AIRPORT, GOA 1.0 EXECUTIVE SUMMARY In order to meet the growing Air Traffic in Goa AAI, has constructed and commissioned New Integrated Terminal Building in March 2014 with peak hour capacity of 2750 Pax. (2000 Domestic and 750 International) having 5 Nos. Aerobridges. Presently, the parking of Aircraft capacity is 2 Nos. B category and 8 Nos. C category or 2 Nos. B category plus 5 Nos. C category and 2 Nos. D/E category. Dabolim Airport is a Naval Airport wherein the ATC is handled by Indian Navy. CNS facilities are also handled by Indian Navy. Airport Authority of India (AAI) handles Aircraft on Civil Apron, Terminal Building and City side facilities. Due to the absence of Parallel Taxi Track on the northern side of Runway 08 - 26, landed Aircraft has to backtrack on the runway to reach the Civil Apron using the Taxiways N1/N2, N4, N5 or using curtailed Parallel Taxi Track on the southern side involving crossing of runway. This process limits the runway capacity of handling Aircraft. With the present arrangement/procedure of Aircraft movement during takeoff and landing, due to the absence of Parallel Taxi Track on the northern side of the Runway, it has negative effect on the turnaround time of the Aircraft. The runway efficiency is also getting limited due to backtracking of Aircraft after landing using either Taxiway N4 & N5 or using southern side part Taxi Track involving crossing of runway. In order to reduce the runway occupancy time by Civil Flights, a full length parallel taxi track suitable for B747 type of Aircraft is required to be constructed. AAI and Indian Navy entered into a MOU for the same as AAI and Indian Navy to share the cost of construction 50:50. It is proposed to modify the existing layout to accommodate parallel taxiway and associated facilities to improve runway capacity and comfort of passengers. The schedule of project is envisaged as 30 months with an estimated cost of Rs.183 crores. There will be no addition of water requirement and generation of wastewater, solid waste after modification of layout. 2.0 INTRODUCTION Goa Airport at Dabolim is in existence since 1966 serving the civilian flights apart from meeting the defence requirements (Indian Navy). The Airport has seen gradual expansion in line with the Air Traffic Growth. The Apron capacity as well as Terminal capacity (Old) has been expanded in the past. In the year 2009, Apron capacity has been augmented to park total 10 Nos. Aircraft of C category. Dabolim Airport at Goa has seen phenomenal growth in the Air Traffic since 2007 which has been shown in the graphical form. Goa has the distinction of attracting foreign tourists who visit by Charter flights. In the year 2013-14, the number of Domestic passengers were 31,53,302 Nos., International passengers were 7,36,340 Nos., number of Domestic flights were 25,376 Nos., International flights were 4,420 Nos. and Chartered Flights were 1,141 Nos. In order to meet the growing Air Traffic in Goa AAI, has constructed and commissioned New Integrated Terminal Building in March 2014 with peak hour capacity of 2750 Pax. (2000 Domestic and 750 International) having 5Nos. Aerobridges. Presently, the parking of Aircraft capacity is 2Nos. B category and 8Nos. C category or 2Nos. B category plus 5Nos. C category and 2Nos. D/E category. Dabolim Airport is a Naval Airport wherein the ATC is handled by Indian Navy. CNS facilities are also handled by Indian Navy. Airport Authority of India (AAI) handles Aircraft on Civil Apron, Terminal Building and City side facilities. Due to the absence of Parallel Taxi Track on the northern side of Runway 08 - 26, landed Aircraft has to backtrack on the runway to reach the Civil Apron using the Taxiways N1/N2, N4, N5 or using curtailed Parallel Taxi Track on the southern side involving crossing of runway. This process limits the runway capacity of handling Aircraft. With the present arrangement/procedure of Aircraft movement during takeoff and landing, due to the absence of Parallel Taxi Track on the northern side of the Runway, it has negative effect on the turnaround time of the Aircraft. The runway efficiency is also getting limited due to backtracking of Aircraft after landing using either Taxiway N4 & N5 or using southern side part Taxi Track involving crossing of runway. In order to reduce the runway occupancy time by Civil Flights, a full length parallel taxi track suitable for B747 type of Aircraft is required to be constructed. AAI and Indian Navy entered into a MOU for the same as AAI and Indian Navy to share the cost of construction 50:50. AAI entrusted the task of carrying out Environmental Impact Assessment (EIA) study to Engineers India Limited (EIL). This document is prepared by EIL as per guidelines for preparations of Pre-Feasibility Report issued by MOEF vide Letter No. J-11013/41/2006- IA.II (I) dated 30/12/2010. 3.0 PROJECT DESCRIPTION Goa airport is situated in Chikalim Village at Vasco-Da-Gama in south Goa District. It is located at a distance of about 30 KM from Panjim. It is well connected road or by rail, situated in the western part of the state. Goa is an undulating tableland, covered in parts by Iron, Maganese. It is lining the state’s eastern border are the thickly forested mountains of the Western Ghats (Sahyadris) that separate it from parched Deccan Plateau of Western Karnataka and is emerging as one of the fastest growing cities on the industrial map of India. It has well developed means of communication and infrastructural facilities and it appears that there is no constraint in the rapid growth of the region. The existing airport is situated in Chikalim village at Vasco in south Goa district at 15o 22' 48.94”N latitude and 73o 49'58.90” E longitude. NH-17A is at a distance of about 200 m from the project location. The district is surrounded by Panaji district at the north, Arabian Sea in the west, Mormugaon at the south and Ponda district at the east. Physiographically the study area of the project comes under Taluka namely Mormugao, Salcete and Tiswadi at an elevation above MSL is 44.5 m. The nearest railway station is Vasco Railway Station which is about 5 KM from the site at the north-west. The location map of existing airport is given in Figure 1.0: Figure 1.0: Location map of Dabolim Airport, Goa The layout of the existing airport is shown in Figure 2.0. Figure 2.0: Layout of the airport The proposed project involves the modification of existing layout to accommodate the following: a) Parallel Taxi Track of dimension approx. 3710 X 23 mts. and shoulders of 10.5mts. b) Widening and strengthening of Link Taxiways N5, N6 and N7 to width 23 mts. and provision of shoulders of 10.5mts. in addition to N3, N4, N2 & N1. c) Development of filets of Taxiways N1 & N2. d) Replacement of air washer unit e) Relocation of borewell and associated works f) Construction of a perimeter road around Dumbell 08 for runway crossing. g) Diversion/Rerouting of Cables/Drain etc. h) Relocation of boundary wall for widening of Perimeter Road, relocation of Bomb cooling pit & GTC hut fouling in the alignment of PTT. i) Installation of 5 Nos. CCR in the existing substation of Indian Navy with remote control panel and installation of DG set of 325 KVA. j) Replacement of CAT-I ILS with New CAT-I ILS. Details of estimates for each of activities are given in subsequent sections. 3.1 Construction of Parallel Taxi Track Details of quantity estimation for each of work involved in construction of parallel taxi track are given in Table 1.0. Table 1.0: Quantity estimation for works involved in construction of parallel taxi track S.No. DESCRIPTION OF ITEM No. L B H QUANTITY Unit 1 Excavation in soil with hydraulic excavator Quantity calculation as per earth work calculation sheet 2,27,934.69 For laying NP4 pipe for diverting the existing 1 x 190.00 x 4.00 x 4.00 3,040.00 drain Shoulder of new apron (Partly) 1 x 1 x 163.89 x 10.50 x 0.28 481.84 2,31,456.53 Say 2,31,457.00 Cum Considering 20% as soil 1(a) 46,291.31 Cum Considering 80% as ordinary rock 1(b) 1,85,165.22 Cum 2 Earth work in foundation tranches (0.9+3.35)/2= Drain 1 x 2 x 2,948.00 x 2.13 x 1.225 15,348.03 Drain side 2 x 2 x 2,948.00 x 1.00 x 0.225 2,653.20 18,001.23 cum 3 Construction of embankment including Quantity calculation as per earth work calculation sheet 6,79,588.83 6,79,588.83 Re-usable materails from excavation 2,03,352.00 4,76,236.83 SAY 4,76,237.00 Cum 4 Consolidation of sub-grade Link taxi 2 x 127.50 x 44.00 11,220.00 New Apron Shoulder 1 x 163.89 x 33.50 5,490.32 Old Apron Shoulder 1 x 126.00 x 33.50 4,221.00 Bay No. 3 & 4 1 x 147.50 x 23.00 3,392.50 Service road 1 x 300.00 x 4.50 1,350.00 1 x 200.00 x 4.50 900.00 Parallel taxi 1 x 2,680.00 x 44.00 1,17,920.00 Fillet 2 x 1,100.00 2,200.00 1,46,693.82 sqm 5 Preparation of sub-grade Connnecting road from peripheral road to 1 x 300.00 x 4.50 1,350.00 parallel taxi track Road connecting from localizer building to 1 x 200.00 x 4.50 900.00 localizer antenna 2,250.00 sqm 6 Providing, laying, spreading and compacting graded stone(WMM) Parallel Taxi-track 1 x 2680.00 x 23.00 x 0.25 15,410.00 Parallel Taxi-track shoulder 2 x 2680.00 x 10.50 x 0.25 14,070.00 Fillet for Parallel taxitrack 2 x 1100.00 x x 0.25 550.00 Service road connecting to parallel taxi 1 x 300.00 x 4.50 x 0.20 270.00 1 x 200.00 x 4.50 x 0.20 180.00 New apron shoulder 1 x 1 x 163.89 x 23.00 x 0.25 942.37 In between N1 & N2 1 x 1 x 126.00 x 23.00 x 0.25 724.50 1 x 1 x 126.00 x 10.50 x 0.25 330.75 Bay No.