Publication Reference: EuropeAid/123600/D/WKS/BG

QUESTIONS SUBMITTED BY POTENTIAL TENDERERS UNTIL 27TH MARCH 2007

In accordance with the appropriate tender procedure, questions concerning the Tender Documents have been submitted by Companies/Consortia/Joint Ventures after the mandatory Information meeting held in Sofia on 09.03.2007. All the questions are quoted as received and no corrections of spelling or grammar errors have been made. The enumeration of the questions is a continuation of the list of questions received in relation to and/or at the Information meeting and already answered (published on the EuropeAid website on 12th April 2007, as well as on the website of the Contracting Authority).

Question 28 Reference According to position plan no. 27 "Station / Halts" is the switch 48 Contract scope of till plan finish planed. How far does it go? It was considered until works, Tender he plan finishes. Is this correct? Documents, Volume 5, Answer Subject to the Contractor's design, after the starting point of turnout No. 48 reconstruction of the existing siding shall be envisaged for approx. 70 m, so that a smooth connection is implemented between the reconstructed part with the existing track.

Question 29 Reference According to position plan no. 56 "Situation" is presented the Contract scope of construction end for S49 track to Greek till km 2+200. This was works, Tender considered as the construction end. Is this correct? Documents, Volume 5, Answer From the station towards Greek border a new track with new alignment shall be constructed till (subject to Contractor's design) approx. km 2+190, this point coinciding with km 301+700 (existing benchmarking). From this point to the Greek border (km 302+741) rehabilitation shall be implemented as described in the answer to question 19.

Question 30

1 Reference The existing track must be completely dismantled, where the Contract scope of operation will be stopped. There are no plans included in the works, Tender tender documents showing the necessary details of these railway Documents, Volume 5, lines. On the tender drawings only the new line and a part of the existing lines are shown and not the whole existing line. Can we obtain plans, where the dismantling is to be distinguished clearly in terms of colour from needing reconstruction? Answer As explicitly said in the Tender Dossier this is a Design-Build Contract and the Tenderer himself shall, in accordance with the provisions as in the Tender Documents, make all investigations/studies and obtain all additional information he considers appropriate for preparing his tender. The drawings of the existing railway line shall be given to the successful tenderer, upon request, after signing of the Contract.

Question 31 Reference We assume that the whole halt Harmanli is part of the project and Contract scope of should be rehabilitated, inclusive the complete connection to the works, Tender main line. Is this right? Documents, Volume 5, Answer It is clear from Volume 3, Part 2, item 4, that Harmanli West Post, Harmanli-Center halt, Harmanli station and Harmanli East Post shall be included in the scope of the Contract.

Question 32 Reference Reconstruction station tracks Simionovgrad & Hamanli. We Contract scope of assume that at these stations only defect sleepers replacement and works, Tender fastening repair and installations has to be executed. Documents, Volume 5, Please confirm this. Answer The works to be performed at Simeonovgrad and Harmanli stations shall be strictly in accordance with the Contract provisions as in Volume 3 and Volume 5.

Question 33 Reference 'The number of sleepers in 1 km of railway track with rails S49 Contract scope of and UIC60 shall be defined according to the category of the line'. works, Tender Please inform us about the line categories for the project Plovdiv - Documents, Volume 3, Svilengrad for the main line and the siding lines. Technical specifications, Section 14.1.6.1 Answer

2 As explicitly said in the Tender Dossier this is a Design-Build Contract. It is for the Contractor to make his own calculations about any technical parameters (including the number of sleepers in 1 km of railway track) while observing the standards and regulations in force and the Contract provisions. Although the Tender Procedure does not include interpreting of the Bulgarian legislation, it should be noted that the railway lines' categorization shall be in accordance with the Regulation for categorization of the railway lines in Republic of Bulgaria, included in the railway infrastructure, and closing of separate lines or sections from lines.

Question 34 Reference Jointless track on bridges with a ballast bed shall be with wooden Contract scope of sleepers instead of pre-stressed concrete sleepers? Could you works, Tender please confirm this? Documents, Volume 3, Technical specifications, Section 14.1.2.5 Answer The wording as in Volume 3, Part 3, item 14.1.2.5. is an exact quotation of the regulations in force, related to jointless track. It is evident that the provisions are permissible and may be applied for existing structures along the line, mainly steel structures. For the new structures the provisions of Regulation 55 for the design and construction of railway lines, railway stations, railway crossings and other elements of the railway infrastructure shall apply and pre-stressed concrete sleepers on ballast bed shall be used.

Question 35 Reference Are guard rail systems to be installed on all railway bridges? Contract scope of Please clarify. works, Tender Documents, Volume 3, Technical specifications, Answer As explicitly said in the Tender Dossier this is a Design-Build Contract. For guard rails the Contractor shall observe the requirements as in Regulation 55 for the design and construction of railway lines, railway stations, railway crossings and other elements of the railway infrastructure.

Question 36 Reference Are compensating devices needed at the bridges? If yes could you Contract scope of please specify at which bridges these expansion devices shall be works, Tender Documents, Volume 3,

3 installed? Technical specifications, Answer As explicitly said in the Tender Dossier this is a Design-Build Contract. For compensating devices the Contractor shall observe the requirements as in UIC 720 and the Bulgarian regulations in force.

Question 37 Reference Railway bridge km 296+378: Vol 5 Part 01, Vol 5 Part 01 drwg. no. 55 shows a bridge in plan with 2 tracks situations and including a switch crossing a river. plans, drwg. no. 55 Vol. 5 Part 04 drwg. no. 76 shows a cross section of this bridge with 1 track only. From the CD: Preferred alignment - Initial Preliminary Design, Report IV page 10, a bridge at km 296+378 is described as 2 track bridge. Furthermore, Vol 5 Part 01 drwg. no. 55 also shows a new single railway line in green as well as a second hand single railway line in orange. Therefore this bridge ought to be designed to take 4 tracks including a switch. Unfortunately, we do not have cross- sections for this Tender. Please provide the necessary cross-sections and specify the bridge required. Also, please state which document of the Tender documents has priority if such discrepancies occur. Answer It is clear that the bridge shall be designed and constructed to carry 4 railway tracks. The Contractor, upon his discretion, may consider a single structure or several structures.

Question 38 Reference Are the following tasks to be included in the scope of the railway Contract scope of superstructure works: works, Tender 1. Stabilising of the track with use of dynamic track stabiliser Documents, Volume 3, (DGS), and Technical 2. Grinding of the rails before taking the new or reconstructed specifications, lines into operation? Section 14, Track Please clarify! design data Answer 1. As explicitly said in the Tender Dossier this is a Design-Build Contract. The Contractor shall elaborate and implement his method statement (subject to the approval procedures and in observation of the requirements as included in the Contract) with the view of obtaining and guaranteeing the main indicators as indicated in Volume 3, Part 2.

4 2. It is explicitly said in Volume 3, Part 3, item 14.1.1.1.(10), that "All new rails on the main line shall be ground in the track after construction works have been completed and prior to the commissioning of the site."

Question 39 Reference Is the securing of workers at the railway line by specialised Contract scope of security personnel (flag men) included in the scope of the works, Tender contractor or will this service be provided by the employer? please Documents, Volume 3, clarify. Technical specifications, Answer It is clear that the Contractor shall, at his own responsibility and for his own account, perform all the works under the Contract in compliance with the relevant regulations in force (including the safety regulations), whereas providing the necessary staff and resources.

Question 40 Reference In the legend of the drawing a light blue line is specified: "existing Contract scope of single railway line – needing reconstruction". Does this mean that works, Tender the existing line has to be dismounted completely and at the same Documents, Volume 5, location a new line with S49 rails has to be reconstructed? If so, Part 1, Situations and does the new line has to be constructed with new rails S49 and Plans pre-stressed concrete sleepers or with second hand rails S49 and second hand pre-stressed concrete sleepers? Please clarify. Answer Within the stations the main track(s) and the sidings that are used for arrival/departure of trains shall be with new track materials and turnouts. The remaining sidings shall be with second-hand materials (these materials being subject to the approval procedures and in observation of the requirements as included in the Contract).

Question 41 Reference Could you please specify the guarantee period for the project Contract scope of according to the Bulgarian legislation? works, Tender Documents, Volume 2, Sub-Clause 11.12 Guarantee Period Answer It is clear that the Tender Procedure does not include interpreting of the Bulgarian legislation. In this respect the guarantee period for the works shall be in accordance with the Law on Territory Arrangement and Regulations No. 1 of 30 July 2003 and No. 2 of 31 July 2003 thereto issued by the Ministry of Regional Development and Public Works.

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Question 42 Reference Road Overpass km 269+259,3 : Vol 5, Part 1, Vol 5 Part 01 drwg. no. 39 describes a new road overpass G6. situations and The Tender Documents Vol 5 part 4 don't describe a new road overpass plans, drwg. at this point. No. 39; Vol 5, Please clearly state, whether a road overpass is required or not. part 4 If a new road overpass is required, please produce the necessary information to enable the Tenderer to make a price for the overpass. Answer The new road overpass at km 269+259.3 shall be included in the scope of the Contract. It shall be designed and built as indicated in Volume 5, Part 1, drawing No. 39, in accordance with the standards and regulations in force and subject to the approval procedures and in observation of the requirements as included in the Contract.

Question 43 Reference Road Underpass km 278+656 : Vol 5, Part 1, Vol 5 Part 01 drwg. no 45 describes a new road underpass. situations and The Tender Documents Vol 5 part 4 don't describe a new road plans, drwg. underpass at this point. No. 45; Vol 5, Please clearly state, whether a road underpass is required or not. part 4 If a new road underpass is required, please produce the necessary information to enable the Tenderer to make a price for the underpass. Answer The new road underpass at km 278+656 shall be included in the scope of the Contract. It shall be designed and built as indicated in Volume 5, Part 1, drawing No. 45, in accordance with the standards and regulations in force and subject to the approval procedures and in observation of the requirements as included in the Contract.

Question 44 Reference Is there a topographical survey. Volume 3, Technical specifications Answer The digital model files of the preliminary design shall be submitted to the Successful Tenderer after the signing of the contract.

Question 45 Reference Are there any maps / drawings showing location and depth of Volume 3, Technical

6 existing utilities? specifications Answer As explicitly said in the Tender Dossier this is a Design-Build Contract. In accordance with Volume 3, Part 5, item 9.2 the Contractor shall make his own enquiries and investigations to ascertain the existence, nature, location and size of utilities. He shall, in accordance with the Contract provisions, design and perform all the works related to reinstating/amending/repositioning of any such utilities that might be affected by the Works, including the EMC issues.

Question 46 Reference Is there any information concerning contamination / pollution of Volume 3, Technical soil. specifications Answer With reference to the information about the contamination of soils along the railway line refer to Environmental Impact Assessment Report and to Environmental Impact Assessment Report – Supplement, included in the CD with additional information, as part of the Tender Dossier.

Question 47 Reference Livestock overpass km 288+228,25 : Vol 5, Part 1, Vol 5 Part 01 drwg. no 50 describes a new livestock overpass. situations and The Tender Documents Vol 5 part 4 don't describe a new livestock plans, drwg. overpass at this point. No. 50; Vol 5 Please clearly state, whether a livestock overpass is required or not. part 4 If a new livestock overpass is required, please produce the necessary information to enable the Tenderer to make a price for the overpass Answer The new livestock overpass at km 288+228,25 shall be included in the scope of the Contract. It shall be designed and built as indicated in Volume 5, Part 1, drawing No. 50, in accordance with the standards and regulations in force and subject to the approval procedures and in observation of the requirements as included in the Contract.

Question 48 Reference RAMS plan:- Volume 3, Technical a). What are the levels of redundancy & reliability. specifications b). what are the beneficiary requirements. c). does EN SO126 provide sufficient detail. d). does Electrical specification sub-clauses 15.2.4 and 16.12 - 14 provide enough detail? Answer

7 In order to understand the question it has been assumed that it refers to Volume 3, Part 4. Design of Electrification, item 6.3.1.7. RAMS Plan. It has also been assumed that the standard referred to in c) shall be EN 50126. The Contractor shall prepare the RAMS plan in compliance with EN 50126 and with the requirements of Volume 3, Part 4. Design of Electrification and of to Volume 3, Appendix 14. Reliability, Availability and Maintainability (RAM).

Question 49 Is there any seismic activity? Answer As explicitly said in the Tender Dossier this is a Design-Build Contract. The Contractor shall make his own enquiries and investigations to ascertain the seismic parameters as contained in a number of Bulgarian regulations.

Question 50 Reference What is Act - 16. Technical Specifications, Part 3 - Civil & Track, Sub-clause 10.4 Answer It should be underlined that the Tender Procedure does not include interpreting of the Bulgarian legislation. The forms (acts) related to the construction sites are described in Regulation No. 3 for commissioning of the construction sites in Republic of Bulgaria.

Question 51 Reference Is there a signal block plan for the estimation of the number and Technical type of track insulators? Specifications, Part 4 Answer In order to understand the question it has been assumed that "track insulators" should be regarded as "insulated joints". There shall not be any insulated joints on the tracks or within the turnouts at the time of commissioning of the Site. However, with reference to the Contractor's obligations as described in the answer to question 23, there may be a need of temporary insulated joints, subject to the Contractor's organisation of work and his solutions for observing the obligations stated therein. Any such temporary insulated joints shall be removed by the Contractor and the integrity of the rails/turnouts shall be restored prior to the time of commissioning of the Site.

Question 52 Is there any free issue material? Answer

8 The Contractor may, subject to the approval procedures and in observation of the requirements as included in the Contract, use any of the dismantled existing infrastructure elements for those parts of the construction, where it is explicitly permitted in the Contract. Apart from such materials there shall be no other free-issue materials available.

Question 53 Reference Locations of signals required in order to determine the number of Technical foundations. Specifications, Part 4 Answer In order to understand the question assumption has been made that the temporary signaling and telecommunications (S&T) system is referred to therein. As explicitly said in the Tender Dossier this is a Design-Build Contract and the temporary S&T system shall be subject to the Contractor's design. Therefore, the Tenderer himself shall, in accordance with the provisions as in the Tender Documents, make all investigations/studies and obtain all additional information he considers appropriate for preparing his tender.

Question 54 What role does the NRIC Railway Commission play? Answer The question is not clear. The involvement of NRIC in the Contract performance is described in details in the Tender Dossier. If the question refers to the NRIC Technical Council, then it should be underlined that all Contractor's design submissions shall be agreed by the said Technical Council prior to the final approval by the Engineer.

Question 55 Under what circumstances would the employer intend to call upon the tender guarantee? Answer The circumstances under which the tender guarantee of the Tenderer shall be subject to forfeiture are explicitly stated in Volume 1, Instructions to Tenderers, Section 1, item 24.3 and item 30.2, as well as Section 3, Tender Guarantee Form.

Question 56 the website quoted in the Tender Documents Vol 1 page 13 does not exist. Please send us the correct website preferably by e-mail as a link. Answer This is to confirm, that there is a missing letter "p" in the word "europeaid" in the EuropeAid website address given in items 9 and 10 of the Instructions to Tenderers. However the correct EuropeAid website is clearly indicated in the Procurement Notice, item 18, namely: http://europa.eu.int/comm/europeaid/index_en.htm The website of the Contracting Authority is correct.

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Question 57 (The following text extracted from page 1-29 in the "Preliminary Design Report" revised in May 2001, regarding the railway construction and rehabilitation work in Plovdiv/ Svilengrad, Bulgaria is to be considered for the questions 57-60) Double tracking of five sections: - Katounitza to Popovitza - Parvomai to Yabalkovo - Dimitrovgrad to Simeonovgrad - Harmanli east to Svilengrad - Svilengrad to Kaptain Andreevo using the existing line and building a new track. Here the railway between the above-mentioned stations is understood to be double track. However Question According to the design, a large cross-section for a double track is shown for 12 railway bridges starting from the bridge at Km: 203+740 to the bridge at Km: 217+734.30; but only a single track is drawn; So, since these bridges shall be constructed for double track, are the "fill – cut" between these bridges, from (Parvomai station) Km: 202+300 to (Yabalkovo station) Km; 219+476 going to be executed as appropriate for double tracks? Answer It is clear that the initial preliminary design has been included in the CD with additional information, in the folder "Preferred alingment - Initial_Preliminary design", only as supplementary information/data for the Tenderers. The Contract shall be performed on the basis of the Preliminary design as included in Volume 5 of the Tender Dossier. The line from Parvomai to the Turkish/Greek border as within the scope of the Contract shall be a single track line, where the eventual future second track shall be to the left in the direction of kilometrage increase (except for the Svilengrad – Turkish border, where for the major part the second track will be to the right). For the section Parvomai – Yabalkovo refer to the answer to question 22.

Question 58 The superstructure for all the railway bridges after the "Yabalkovo station" (Km: 219+476) is illustrated for only one track; however, according to the Preliminary Design Report page 1-29, as it is written above to be a double track, please clarify: - If the "fill-cut" shall be for single track, according to the bridge cross-section? - Or if it is going to be for double track according to the report? Answer Refer to the answers to questions 22 and 57 above.

Question 59

10 Although the bridges between Km: 203+740 and 219+476 are designed for double track, the lengths of the box and concrete slab structures are given in the same part for one single track, Can you please clarify this issue? Answer For all railway structures in the section Parvomai – Yabalkovo (including the box and concrete slab structures) refer to the answer to question 22.

Question 60 You are kindly requested to state the type of construction and rehabilitation works to be executed for the bridges and superstructures, the km(s) of which between Km: 296+699 and 315+655 are given? Answer Refer to the answer to question 19

Question 61 For the superstructures where the new track and the existing track meet; please clarify if the culverts shall be demolished and constructed as a single structure or if the new one and the existing one shall be coupled to a new one? Answer Refer to the answer to question 15

Question 62 The tender documentation includes the plans and profiles of the alignment. Could you please also give us the cross-section covering the entire railway at reasonable intervals? Could you please, also provide the railway typical cross-section, indicating the platform width, slope and other details to be applied during excavation and filling activities for design purpose? Answer Refer to the answer to question 24. The typical cross-sections shall be in accordance with Regulation 55 for the design and construction of railway lines, railway stations, railway crossings and other elements of the railway infrastructure.

Question 63 km 298+700 to Turkish/Greek border All bridges and culverts beyond this point apart from the Generalovo road bridge at km 309+543,9 are neither indicated as new bridges nor described for rehabilitation. Therefore, we assume, that no work has to be done for these bridges. Please confirm Answer Refer to the answer to question 19.

11 Question 64 The number of the station platforms is different from the number of platforms given in the revised design report. Provided that the numbers in the technical specification will be essential, please confirm that 1 x 220 m long platform shall be constructed in Krum and Konstantinovo Halts. Answer In accordance with the appropriate drawings in each of the two halts – Krum and Konstantinovo, one passenger platform shall be constructed.

Question 65 Could you please kindly explain more briefly the scope of the rehabilitation work to be executed between Svilengrad (Km. 296+699) and Turkish Border (Km.315+655) and Svilengrad (Km. 296+699) and Greek Border (Km.300+646)? Answer Refer to the answer to question 19.

Question 66 Could you please explain more specifically, the works to be executed and the required relevant criteria for the station buildings to be newly constructed and refurbished? Furthermore, if applicable, you are kindly requested to provide the design and design requirements also for the stations to be newly constructed? Answer The requirements for the stations' and halts' buildings are indicated in Volume 3, part 2, item 4.2.(1) d). As explicitly said in the Tender Dossier this is a Design-Build Contract and the Tenderer himself shall, in accordance with the provisions as in the Tender Documents, make all investigations/studies and obtain all additional information he considers appropriate for preparing his tender.

Question 67 No details about the supports of the slopes and the retention wall or structures are covered in the documentation we are given for examination. Could you please provide the details and locations for such structures throughout the alignment? Answer As explicitly said in the Tender Dossier this is a Design-Build Contract. The Contractor shall propose solutions (including retention walls or any other structures) and make the appropriate calculations in his Preliminary and Definitive designs, subject to the approval procedures and in observation of the requirements as included in the Contract.

Question 68

12 Could you please provide the plans and details illustrating the existing utility system, so that we can identify the temporary and permanent utility relocation works throughout the alignment? Answer Refer to the answer to question 45 above.

Question 69 Please provide a clarification for the volume of works described as "rehabilitation" in the section of the track from km 298+700 to km 315+655 (Turkish border). What works exactly need to be performed and what will be the thickness of the different construction layers? Answer Refer to the answer to question 19.

Question 70 Please provide a clarification for the volume of works described as "rehabilitation" in Simeonovgrad station. What works exactly need to be performed and what will be the thickness of the different construction layers? Answer Refer to the answer to question 32 above.

Question 71 Please provide a clarification for the volume of works described as "rehabilitation" in Harmanli station. What works exactly need to be performed and what will be the thickness of the different construction layers? Answer Refer to the answer to question 32 above.

Question 72 During the studying of the Tender documentation was discovered a conflict between the position of new track and the construction of the existing bridge at km 269+360 (existing kilometer mark). Is this bridge going to be reconstructed and to what extent? Answer The Contractor shall redesign and implement (subject to the approval procedures and in observation of the requirements as included in the Contract) the track alignment within the zone prior to the existing bridge at km 269+360, so that to avoid major reconstruction of the existing structure.

Question 73

13 In Volume 5, Part 1 - in the Situation an underpass is shown at km 237+108. In the other parts of the specification (for example in Volume 5, Part 4) this underpass is not shown. Is this underpass part of the specification and does it have to be included in our tender? Answer The underpass at km 237+108 shall be included in the scope of the Contract.

Question 74 In Volume 5, Part 1 - in the Situation an underpass is shown at km 213+997. In the other parts of the specification (for example in Volume 3, Part 2) this underpass is not shown. Is this underpass part of the specification and does it have to be included in our tender? Answer The agricultural underpass at km 213+997 shall be included in the scope of the Contract.

Question 75 What works exactly are included under the term "temporary safety equipment"? Answer Refer to the answer to question 23.

Question 76 Is the performing of the cable routes, including the shafts and crossings with the railway tracks, for the future new safety equipment, which has to be performed simultaneously with the works on the track foundation, part of the works under Phase II? Could you please specify the extent to which such works need to be performed? Answer Refer to the answer to question 23.

Question 77 Should the delivery of electric heating for the turnouts be included in the contestant's tenders? If so - will electric heating be delivered both for the new and for the regenerated turnouts? Answer Electric heating systems shall be delivered and implemented within the scope of the Contract only for the turnouts on the main track(s) within the stations.

Question 78 In Volume 4, TWC 10 - Overhead catenary system and associated equipment are included items „Supply of Overhead Catenary Maintenance Vehicles (CMV)" and „Supply of equipment for catenary cable wear-and-tear control to be installed on CMV's". Are these two items to be performed by the Contractor for Phase II? If the answer is positive - to what extent?

14 Answer The supply of catenary maintenance vehicles and equipment shall not be included in the scope of the present contract. Therefore, in Volume 4, page 64, the bullets "Supply of Overhead Catenary Maintenance Vehicles (CMV)" and "Supply of equipment for catenary cable wear- and-tear control to be installed on CMV's" shall be deleted in their entirety.

Question 79 Reference Demolition of existing bridges. Vol 3, part 2, The Tender Documents state, that the demolition of the existing track page 8 including substructures ie. bridges, culverts, embankments, recultivation etc. form part of the Contractors scope of work. In order to estimate the demolition of existing structures we need the drawings of the existing structures. Please provide a list of all structures you want to be demolished and state the extent of demolition ie. excluding or including the foundations. Furthermore, in the case of existing overpasses to be demolished you need to clarify who has to remove the embankments of the overpasses and who has to rebuild the existing road in order to enable the traffic to cross the previous railway line. It is also a question to which extend the backfill of a cut is to be executed to allow the road traffic to cross the previous railway line. To what extend to you want culverts and underpasses to be demolished and how do you expect the rebuilding of for example rivers and roads? Answer Refer to the answers to questions 15 and 30 above.

Question 80 Does the Contractor need to pay a fee/tole to run on the existing Bulgarian railway for the purpose of this project? If there are different cases, could you specify? Answer The Contractor shall not pay any infrastructure taxes for his railbound vehicles when they work or move within the site. However, when travelling outside the construction site, infrastructure taxes are due for the traffic of these vehicles. Normally such taxes are calculated within the rates of the railway operators. In any cases the provisions of the Law on the Railway Transport shall be observed.

Question 81 Does the Contractor have to dismantle the entire existing track from Parvomai to Greek border, even if it does not merge with the layout of the new track to be laid? Answer

15 Refer to the answer to question 15

Question 82 In « Volume 5, Stations & Halts, drawing nr.27 », what is the dotted blue line (320 km to be dismantled) in Svilengrad station? Answer The line on the drawing as referred to in the question indicates an existing siding. It shall be dismantled.

Question 83 According to «Volume 3, part 2, articles 4.1.5 and 4.1.6, pages 5 and 6 of 15 », Simeonovgrad and Harmanli stations will be electrified, partly or not. The scope of electrified tracks is not clear, particularly for Simeonovgrad. Could you state the trackworks (new tracks and/or tracks needing reconstruction) to be carried out in these stations? Answer In order to understand the question assumption has been made that it refers to the scope of the electrification works in Simeonovgrad station and in Harmanli station. In this respect, please refer to Volume 5, Part 5, drawings 11/85 and 12/85.

Question 84 Are the sidings tracks, for instance the S49 tracks, second hand and brand new, to be welded or fishplated? (NB: second hand S49 is already drilled at its end). Answer All the sidings to be implemented with S49 rails shall not be welded.

Question 85 At Dimitrovgrad station, there are two turnouts tg 1:12 (nr. 14 and nr. 16), in "CD, Volume 5, Switches specification" and also in "Volume 5 - Stations & Halts, drawing nr.8") with UIC profile. However, there is no reference to these two turnouts tg 1:12 in "Volume 3, Part 3 - Technical specifications, art. 14.1". Could you clarify? Answer The turnouts No. 14 and No. 16 in the station of Dimitrovgrad shall be designed and implemented as UIC60 1:9 R300.

Question 86 At Dimitrovgrad station, in south direction of turnouts nr.46 and nr.48, could you specify the km of the end of Contractor's scope regarding the reconstruction works (blue turquoise tine)?

16 Answer The question is not clear, because in Dimitrovgrad station there are no turnouts with numbers 46 or 48.

Question 87 At Dimitrovgrad station, could you explain how does end the main siding track (red track UIC 60) at km 234+700? Answer The track as referred in the question will be used as eventual future doubling of the line. Within the scope of the present Contract it shall be designed and constructed until km 234+700 and shall end with a buffer stop (dead-end siding).

Question 88 In "Volume 5 - Part 2 - Longitudinal Profile", at five (5) crossing points between existing track and new track we did not find some information about level of existing track "Elev./Dist. - existing railways", and notably at the following km points: 267+910, 235+109, 236+588, 237+005 and 237+592. Please, could you give us the information? Answer The elevation of the existing railway track is as follows: km 267+910 – elevation 74.90 km 235+109 – elevation 119.25 km 236+588 – elevation 104.18 km 237+005 – elevation 100.43 km 237+592 – elevation 96.89 The above elevation values are indicative only.

Question 89 At the approximate km 298 and 299, please, could you specify at which km point has the green track to end? Answer It is clear that the track as referred in the question shall be the new part of the line from Svilengrad to the Greek border.

Question 90 Could you explain why the red track is ending as indicated at km 298+800? Indeed, we do not understand the purpose of this proposal. Answer The track as referred to in the question will be used as eventual future doubling of the line from Svilengrad to the Turkish border. Within the scope of the present Contract it shall be

17 designed and constructed until km 298+800 and shall end with a buffer stop (dead-end siding).

Question 91 According to « Volume 3, part 2, articles 4.1.8, page 7 of 15 », please, could you clarify what is the scope of works between Svilengrad station and Turkish border. For now, we understood that the scope has to be defined by the contractor himself. If it is really the case, could you tell us what will be the criteria to evaluate and compare the offers? If you have any idea about the scope of works, why not to give this guide-line in order to compare similar proposal from the competitors? Answer Refer to the answer to question 19.

Question 92 Could you clarify definition of track components (type of rails, new or second hand components, etc...) between Svilengrad and Turkish and also between Svilengrad and Greek borders? Answer Refer to the answer to question 19.

Question 93 In Lyubinets station, at km 286+900, there is an industrial line needing reconstruction. At which km does the scope of works end? Answer The reconstruction works shall be implemented up to the end of the turnout. Then smooth connection to the industrial branch shall be arranged.

Question 94 Generally, what is the meaning of the "needing reconstruction" scope (blue turquoise line)? Answer In general the tracks marked as "needing reconstruction" shall be repositioned and renewed. As explicitly said in the Tender Dossier this is a Design-Build Contract and the Tenderer himself shall, in accordance with the provisions as in the Tender Documents, make all investigations/studies and obtain all additional information he considers appropriate for preparing his tender.

Question 95 Ref Required Time for Completion is 37 months for the Signalling Contract Contractual and 39 months for Infrastructure Contract. Construction and T&C

18 Integration phases of the Track and Electrification Works require numerous Signalling inputs. Please confirm 1/ Commencement of the Works dates for both contracts 2/ whether Sections of works completions are required to be synchronized between both contracts. Answer Refer to Volume 3, Appendix 3. Design and construction interfaces, and to the answer to question 23.

Question 96 Ref Acceptance of intermediate integration tests and of Line sections obviously Contractual requires availability of Electrical Motorized Units. Please confirm whether any EMUs delivery schedule is already anticipated. Answer The information required in the question is not related in any way to the present Tender procedure. Such information is available at the railway operators acting in Bulgaria at present. In any case the Contractor, at his own costs, shall arrange for any suitable vehicles to be used for the performance of all the tests as indicated in the Tender Dossier.

Question 97 Ref Volume 3 technical specification part 5 §13.10 mentions a 12 months Trial Running, and in Part 6 § 4.8, a duration of 15 days Test Running is Contractual mentioned. Please clarify whether these both periods are refering to the Tests after Completion following the Taking Over (according to FIDIC Clause 12) and thanks to consequently clarify the duration. Answer The trial run shall be 15 days and shall be in accordance with Volume 2, Section 2. General Conditions, Clause 12. "Test after Completion" of the Contract Conditions.

Question 98 Ref In Appendix to tender the Defects Notification Period is required to be 365 days, starting from the Provisional Acceptance of the Works (=Taking Over according to the FIDIC Clause 10). In Glossary Volume 1 Section 6. Contractual the Execution Period is required to be 18 months after the Provisional Acceptance. Please clarify what are Contractor's obligations during the 6 months beyond the DNP ? Answer The Defects Notification Period (DNP) shall be governed by the General Conditions of Contract (GCC), as amended by the Particular Conditions of Contract (PCC), namely Sub- clause 1.1.3.7, Clause 10 and Clause 11. The period is calculated from the date on which the

19 Works or Section is completed as certified under Sub-clause 10.1, Taking over of the Works and Sections. The DNP may be extended as per the provisions of Sub-clause 11.3 of GCC.

Question 99 Reference Harmanli Central Halt km 270+006 Vol 5 Part 01, Vol 5 Part 01 drwg. no 41 shows the new Harmanli Central Halt at km situations and old 269+650. plans drwg. no 41 At km old 269+980 a new pedestrian underpass is shown. Vol 3 part 2 page 6 describes the new Harmanli Central Halt at km 270+006 with a platform and pedestrian subway. Why is the pedestrian subway approximately 330m away from the halt and why is the drawing different to the Technical Specification. Answer The new Harmanli-Central halt shall be at km 269+650 (old km). The new pedestrian underpass shall be at 269+980 (old km). The appropriate positions as in Volume 3 are in accordance with the new kilometrage marks.

Question 100 Ref Questions The Line Control Center is known to be located in Plovdiv. Please confirm Control Center whether any Infrastructure scope is attached to the Plovdiv Control Center. Answer It is clear from the Tender Dossier that the Line Control Center in Plovdiv shall not be included in the scope of the present Contract.

Question 101 Ref Questions Motorisation of turnouts is part of the scope in the CIVIL & TRACK section as per technical specification part 3 chapter 14.1.8.7 and 14.1.9.6. - the motor type is not specified and may not interface either with Phase 1 of the project or the signalling contract. Could you please Track scope specify ? - In some locations, existing turnouts are to be kept unchanged (as per drawing legend) but might be motorized. It is not obvious to locate new motorized turnouts Please indicate the line KPs where the old and new turnouts should be motorized. Answer - All the new turnouts to be supplied and installed within the scope of the Contract shall be with turnout motors. The types and the parameters of the motors shall be proposed by the Contractor, subject to the approval procedures and in observation of the requirements as included in the Contract. The existing turnouts to be reused shall be equipped by the Contractor with the existing motors (after the relevant repair/rehabilitation). - All turnouts within the scope of the Contract shall be with motors.

20

Question 102 Ref Questions Some level crossings between existing roads and / or streets and the new Track Line should accomodate elevation gaps. Please confirm whether road Alignment infrastructure works are planned by the Bulgarian Roads Authority at the level crossings. Answer The question is not clear, because there shall be no level crossing on the new line. If the question refers to the two existing railway crossings on the old line at Simeonovgrad station, then the Contractor shall perform the rehabilitation works, including the roadside works, in accordance with the Bulgarian legislation in force upon the required approvals by the road authorities. If the question envisages the requirements for the existing level crossings on the old line to be dismantled, then refer to the answer to question 15.

Question 103 Ref Questions Does points defrosting equipment belongs to the Infrastructure scope ? Track Thanks to confirm. Alignment If yes, please indicate how to estimate the quantity of equipment to supply. Answer Refer to the answer to question 77 above.

Question 104 Ref Scope Substations Please confirm whether the substations lay-outs in tender Power Supply General documentation are for information only. Answer As explicitly said in the Tender Dossier this is a Design-Build Contract. The Optimised Preliminary design that is included therein shall be used as basic information for the preparation of the Tenders and subsequently for facilitating the Contractor to prepare his design. The final layouts shall be designed by the Contractor in his Preliminary and Definitive designs, subject to the approval procedures and in observation of the requirements as included in the Contract.

Question 105 Ref Scope Substations Are there external land constraints to the size of the TPS ? Power Supply General Thanks to confirm. Answer

21 In order to understand the question it has been assumed that the Traction Power Substations (TPS) in Simeonovgrad and in Svilengrad are referred to therein. The plot allocated for TPS Simeonovgrad is shown in Volume 5, Part 1, drawing No. 33. The plot allocated for TPS Svilengrad is shown in Volume 5, Part 3, drawing No. 26.

Question 106 Ref Scope In Dimitrovgrad substation, equipment already installed Substations Power Supply and to be installed are not clearly differentiated. Is there General any additional marking ? Answer It is explicitly said in Volume 3, Part 2. Functional, item 4.1.2. Dimitrovgrad Traction Power Substation that "… the Contractor shall design and install connections to the newly electrified sections which are part of this contract." Further, the requirements for the scope of the works at TPS Dimitrovgrad is described in details in Volume 3, Part 4. Design of electrification.

Question 107 Ref Scope Spare parts for 25kV outgoings are required. Shall these Substations Power Supply spares parts belong to the present tender ? Thanks to General confirm. Answer Spare parts for all plant and equipment (including the 25 kV outputs) shall be included in the scope of the Contract and shall be delivered in accordance with the provisions as set out in Volume 3. Technical specifications.

Question 108 Ref Scope There are some discrepancies between the Technical Substations Power Supply Specifications and the Single Line Diagrams. Which General document shall prevail? Answer It is not clear from the question which discrepancies are referred to therein. Such discrepancies (if any) shall be dealt with on a case-by-case basis. In principle, in case of discrepancies between documents referring to the same subject, the more stringent criteria shall be applied.

Question 109 Ref Scope The 110kV Voltage Transformers are differently located at Substations Power Supply Dimitrovgrad and at both new Substations. Thanks to General confirm. Answer

22 Refer to the answer to question 104 above.

Question 110 Ref Scope In normal operation or in degraded operation, shall a Substations Power Supply parallel connexion be possible between both Traction General Transformers ? Answer Please, refer to Volume 3, Part 4. Design of electrification, item 15.3.8.2.2. Further to the requirements therein, option shall be provided for parallel work of the traction transformers in emergency mode.

Question 111 Ref Scope Substations Who must carry the cost of the subscription to the local Power Supply General supplier of energy for the tests? Answer It is explicitly said in Volume 3, Part 4. Design of electrification, item 16.17.2.(3) that "The Contractor shall assume full responsibility for all costs in connection with the inspection or tests…"

Question 112 Ref Scope Substations The Authorizations from the local authorities for the Power Supply General energization of the line is under which responsibility ? Answer It is clear from the Tender Dossier, that the Contractor, at his own costs, shall be responsible for obtaining all necessary approvals/agreements/authorisations related to the performance of the Contract, in accordance with the Bulgarian legislation in force.

Question 113 Ref Scope 110kV bipolar disconnectors are required before the Single line Power Supply Traction Transformers. Is it possible to offer single phase Substations disconnectors, allowing choice of the phase ? Answer As explicitly said in the Tender Dossier this is a Design-Build Contract. The design solutions are proposed by the Contractor in his Preliminary and Definitive designs, subject to the approval procedures and in observation of the requirements as included in the Contract.

Question 114

23 Ref Scope In the substation, the 110kV three-pole disconnectors are Single line required with two grounding switches. May we replace the Power Supply Substations two grounding switches by one grounding switch and one earthing stick? Answer Refer to the answer to question 113 above.

Question 115 Ref Scope The 25kV Voltage Transformer dedicated to the voltage Single line Power Supply regulation seems to be missing at the Traction Transformer Substations Secundary side. Thanks to confirm. Answer Refer to the answer to question 113 above.

Question 116 Ref Scope Single line The 25kV catenary switch inside the TPS should be Power Supply Substations directly installed on the catenary mast. Please confirm. Answer Refer to the answer to question 113 above.

Question 117 Ref Scope NEC The short-circuit current is mentioned with 31,5 kA Power Supply Connections minimum in the tender document. Please confirm. Answer As explicitly said in the Tender Dossier this is a Design-Build Contract and the Tenderer himself shall, in accordance with the provisions as in the Tender Documents, make all investigations/studies and obtain all additional information he considers appropriate for preparing his tender. The same shall refer to the Contract performance.

Question 118 Ref Scope NEC Please confirm the maximum allowed short-circuit power? Power Supply Connections Answer Refer to the answer to question 117 above.

Question 119

24 Ref Scope NEC Please confirm the maximum and minimum voltage Power Supply Connections fluctuation ? Answer Refer to the answer to question 117 above.

Question 120 Ref Scope NEC Pleas confirm whether NEC connections are either of Power Supply Connections antenna type or of "opening a by-passing line" Answer Refer to the answer to question 117 above.

Question 121 Ref Scope "110kV or higher" in page 23/84 of Technical NEC Power Supply specifications: Please confirm 110kV being the only power Connections supply voltage. Answer In order to understand the question it has been assumed that Volume 3, Part 4, item 15.2.7(1) is referred to therein. The incoming High Voltage shall be 110 kV.

Question 122 Ref Scope Network characteristics such as Voltage Unbalance in NEC Power Supply normal and degraded mode, Harmonic levels, Power Factor Connections limit are not mentioned. Please confirm. Answer Refer to the answer to question 117 above.

Question 123 Ref Scope NEC Please confirm where is the limit of scope between Public Power Supply Connections Supply Grid compagny and the substation equipment ? Answer Please refer to Volume 5, Part 5, drawings 57/85 and 59/85.

Question 124 Ref Scope NEC What is the allowed distance between the 110kV line Power Supply Connections network and each substation?

25 Answer Please refer to Volume 5, Part 5, drawings 58/85 and 60/85. The OHTL lengths shall be as follows: • TPS Simeonovgrad: main supply: 12.5 km stand-by supply: 0.6 km • TPS Svilengrad: main supply: 9.5 km stand-by supply: 0.1 km The above lengths are indicative only and shall be subject to the Contractor's design.

Question 125 Ref Scope We observed that the GIS test busbar indicated in the tender document is a technology which does not comply 25kV with the EN 50124-1- OV3 where power frequency voltage Power Supply switchboard shall be 250kV. Can we propose an operating mode equivalent to the test busbar function in conformity with the 250 kV power frequency voltage. Answer Refer to the answer to question 117 above.

Question 126 Ref Scope Traction Overload cycle: which is the cycle to be considered Power Supply Transformer according to the HD 591 standard? Answer Refer to the answer to question 113 above.

Question 127 Ref Scope Traction Short circuit voltage Ucc: please confirm the figure to be Power Supply Transformer taken into account. Answer Refer to the answer to question 113 above.

Question 128 Ref Scope 110kV Please confirm that all 110kV equipment are required to be Power Supply Equipment outside designed and not GIS designed. Answer The 110 kV switchgear shall be outdoor type.

26 Question 129 Ref Scope 110kV Surge arrester: what is the class of the discharge line? Power Supply Equipment Answer As explicitly said in the Tender Dossier this is a Design-Build Contract. The parameters of the plant and the equipment to be supplied hereunder shall be proposed by the Contractor in his designs, subject to the approval procedures and in observation of the requirements as included in the Contract.

Question 130 Ref Scope High Voltage Current Transformer: Icc is required to be 110kV Power Supply 40kA whereas the other high voltage equipment Icc is Equipment required to be 31.5kA Answer Refer to the answer to question 117 above.

Question 131 Ref Scope Is either an officially proven counter or a numerical one to Power Supply Metering be provided? Please confirm. Answer Refer to the answer to question 117 above.

Question 132 Ref Scope 25kV cables: are bare copper cables authorized to link the Power Supply Cables outgoing cells to the catenary. Thanks to confirm. Answer Refer to the answer to question 113 above.

Question 133 Ref Scope Control cables: are un-shielded cables acceptable inside the Power Supply Cables TPS and along the track ? Thanks to confirm. Answer Refer to the answer to question 113 above.

Question 134

27 Ref Scope Capacitor The associated inductor is not mentioned in the technical Power Supply bank specification. Please clarify. Answer Instead of the capacitor banks, shown on the appropriate TPS drawings, the Contractor shall supply and install devices, which compensate both the inductive and the capacitive energies. The parameters of these devices shall be defined by the Contractor in his designs, subject to the approval procedures and in observation of the requirements as included in the Contract.

Question 135 Ref Scope Three different power supplies are envisaged for the Power Supply BSP control of the disconnectors. Which one is applicable and in which conditions ? Answer As indicated, each BSP shall have three different sources of power supply: two from the power supply feeders from the adjacent TPSSs and one independent from NEC.

Question 136 Reference Which version is correct for the position plan no. 2 "Stations / Stations / Halts, Halts"? As per paper copy is the industry track from the Position Plan no.2 construction beginning km 202,305 till 203,050 presented as left unchanged. In the PDF document on the client CD is this track presented as needing reconstruction. Which plan (paper or PDF) is correct? We assume that this track as left unchanged. Is this correct? Answer The industrial branches are not property of NRIC and therefore shall not be included in the scope of the Contract. However the Contractor shall design and construct smooth connection to the existing industrial branches, subject to the approval procedures and in observation of the requirements as included in the Contract.

Question 137 Reference From Km 219,520 as per position plan no. 6 "Station / Halts" is Station / Halts presented the side track with the switches 11, 3 and 1 as UIC (60) Situation Position Plan in red. According to the switch description are used in this plan no. 6 only S49 - switches. According to position plan 12 "Situation" this side track is presented as switch used with S49. It is assumed that S49 is to be used. Is this correct? Answer

28 It is clear that, according to the legend, the sidings at the position as indicated in the question are marked with orange. Therefore the turnouts there shall be of S49 type.

Question 138 Reference Which presentation is correct for position plan no.6 "Station / Station / Halts Position Halts"? According to the paper copy is the track presented after the Plan no. 6 connection S49 at km 220,300 as left unchanged. In the PDF - document on the client CD is the track presented as needing reconstruction. Which plan (paper or PDF) is correct? This track will be considered as left unchanged. Is this correct? Answer The track after km 220+300 towards the industrial branch shall be left unchanged. Further, refer to the answer to question 136 above.

Question 139 Reference In the position plan no. 8 "Station / Halts" the main track will be Station / Halts connected with S49 used at km 231,480. According to the position Situation Position Plan plan no. 16 "Situation" this existing main track will cross at km no. 8 and no. 16 229,157 with the new UIC 60. Which sense does this connection has, if this track is connected ca. 2 km backward. Is here missing a buffer stop? If yes. Where? Answer Refer to the answer to question 136 above.

Question 140 Reference On the position plan no. 8 "Station/Halts" at km 232,000 the Station / Halts Position switches (before switch 30) will be dismount. But for this switches Plan no. 8 is presented needing reconstruction. Here was considered S49 to be used as panel of the demounted switch for this 2 switches. Is this correct? Answer The turnouts as referred to in the question shall be dismantled and replaced with track panel(s) of S49 type.

Question 141 Reference On the position plan no. 8 "Station / Halts" is switch 67 in the Station / Halts Position drawing a switch S49-190-1:9 left. But according to the description Plan no. 8 is this a switch S49-300-1:9. It is considered to be a switch S49-

29 300-1:9 . Is this correct? Answer The turnout No. 67 as referred to in the question shall be of S49 1:9 R300 type.

Question 142 Reference On the position plan no. 9 "Station / Halts" is the switch 25 drawn Station / Halts Position as a switch S49-300-1:9 right. But according to the description it is Plan no. 9 a switch S49-190-1:9. It is considered that the switch 25 is a S49- 190-1:9. Is this correct? Answer The turnout No. 25 as referred to in the question shall be of S49 1:9 R190 type.

Question 143 Reference On the position plan no. 9 "Station / Halts" is the switch 19 drawn Station / Halts Position as switch S49-190-1:9 right. But according to the description it is a Plan no. 9 switch S49-300-1:9. It is considered that the switch is a S49-300- 1:9 . Is this correct? Answer The turnout No. 19 as referred to in the question shall be of S49 1:9 R190 type.

Question 144 Reference According to the position plan no. 14 "Station / Halts" is from Station / Halts switch 6 (old) direction Nova Zagora presented as needing Situation Position Plan reconstruction another 22m. But in position plan no. 31 "Situation" no. 14 is presented this track as needing reconstruction another ca. 200m. It is considered that the presentation in position plan no. 14 Station /Halts is correct. Is this right? Answer For the zone as referred to in the question the works shall be performed as indicated in Volume 5, Part 1, drawing No. 31, i.e. reconstruction of turnout No. 6 and approximately 200 m of track in the direction towards Nova Zagora.

Question 145 Reference Which presentation is correct for the track from the switch 6 (old) Station / Halts Position direction Nova Zagora according to the plan no. 14 "Station / Plan no. 14 Halts"? According to the paper copy is presented that from switch 6 (old) direction Nova Zegora another 22m as needing

30 reconstruction. In the PDF - document on the client CD is this track presented as needing reconstruction until the plan finish. Which plan (paper or PDF) is correct? It was considered that the paper copy is correct. Is this correct? Answer Refer to the answer to question 144 above.

Question 146 Reference On the position plan no. 25 "Station / Halts" is switch 7 drawn as a Station / Halts Position EW49-300-1:9 left. According to the description is a switch S49- Plan no. 25 190-1:9. It is considered that the switch 7 is a S49-190-1:9 . Is this correct?. Answer In order to understand the question it has been assumed that "EW49-300-1:9" should be regarded as "S49-300-1:9". The turnout No. 7 as referred to in the question shall be of S49 1:9 R190 type.

Question 147 Reference From km 286,130 is presented according to the position plan no. 25 Station / Halts "Station / Halts" the side track / industry track with the switches 9, Situation Position Plan 7 and 13 as UIC 60 (red). But according to the switch description no. 25 on this plan are used switches S49. According to the position plan no. 49 and 50 "Situation" is this side track / industry track presented as used with the switches S49. It is assumed that S49 is to be used. Is this correct? Answer It is clear from the paper copy of Volume 5, Part 3, drawing No. 25, that the turnouts and the industrial branch as referred to in the question are marked in orange and shall be of S49 type.

Question 148 Reference Which presentation is correct for the side track /industry track Station / Halts according to the plan no. 25 "Station / Halts"? According to the Situation Position Plan paper copy it is presented as UIC 60. In the PDF - document on the no. 25, 49 and 50 client CD is presented that S49 is used. Which plan (paper or PDF) is correct? It was considered the PDF plan respectively position plan no. 49 and 50 "Situation" as being correct. Is this right? Answer Refer to the answer to question 147 above.

31 Question 149 Reference According to position plan no. 25 "Station / Halts" is presented that Station / Halts Position from km 286,650 the industry track is needing reconstruction. We Plan no. 25 assume that this industry track is going until km 286,930. Is this correct? Answer The reconstruction works within the zone as referred to in the question shall be up to the end of the orange line after turnout No. 13 as indicated in Volume 5, Part 3, drawing No. 25. However, as explicitly said in the Tender Dossier this is a Design-Build Contract. The design solutions for the drainage/dewatering of the station platform to be proposed by the Contractor in his design (subject to the approval procedures and in observation of the requirements as included in the Contract) may require corrections/reconstruction for the remaining part of the siding.

Question 150 Reference From km 296,270 are presented according to the position plan no. Station / Halts 26 and 27 "Station / Halts" the side track and switches as UIC 60 Situation Position Plan (red). According to the switch description are used in this plans no. 26, 27 and 55 switches S49. According to the position plan no. 55 "Situation" are presented this side tracks / switches as used S49. We assume that S49 are used. Is this correct? Answer It is clear that within the zone as referred to in the question only the main tracks shall be implemented with rails UIC60. All the other sidings shall be with rails S49.

Question 151 Reference Which presentation is correct for the side track / switches Station / Halts according to plan no. 26 and 27 "Station / Halts"? According to the Situation Position Plan paper copy is presented as UIC 60. In the PDF - document on the no. 26, 27 and 55 client CD is presented that S49 is to be used. Which plan (paper or copy) is correct? It was considered the PDF plan is correct respectively position plan no. 55 "Situation". Is this right? Answer Refer to the answer to question 150 above.

Question 152 Reference According to position plan no. 27 "Station / Halts" at km 296,600 Station / Halts Position are dismantled partly the 2 side tracks incl. a switch (at switch 20 Plan no. 27 new) to the locomotive garage. The upper track there form will be

32 new tied. The under track is dismantled 55m. We assume that here in the existing track will be build a buffer stop before the locomotive garage. Is this correct? Answer There shall be no buffer stop (dead-end track) on the siding as referred to in the question before the locomotive depot.

Question 153 Reference According to position plan no. 27 "Station / Halts" is the switch 48 Station / Halts Position till plan finish planed. How far does it goes? It was considered until Plan no. 27 he plan finisher. Is this correct? Answer Refer to the answer to question 28 above.

Question 154 Reference According to position plan no. 6 "Station / Halts" is the switch 11 Station / Halts Position with 6,25m track presented at the switch beginning for Future Plan no. 6 Industrial Line. Is here missing a buffer stop? It was assumed a buffer stop. Is this correct? Answer The question is not clear. If it refers to the new turnout No. 11 in Yabalkovo station, then the works shall be designed and implemented as in Volume 5, Part 3, drawing No. 6.

Question 155 Reference According to position plan no. 56 "Situation" is presented the Situation Position Plan construction end for S49 track to Greek till km 2+200. This was no. 56 considered as the construction end. Is this correct? Answer Refer to the answer to question 29 above.

Question 156 Reference Because it means that the existing track must be dismantled com- Situation plete, where it no longer exists. Here are missing the necessary plans, because the position plan situation are presenting only the new one, respectively the rebuilding "Situation" and not the whole existing line. Can we obtain plans, where the dismantling is to be distinguished clear in terms of colour from needing reconstruction?

33 Answer Refer to the answer to question 30 above.

Question 157 What does it mean needing reconstruction? Is here meant only rehabilitation or the complete reconstruction. If it meant the complete reconstruction, shall be here build used materials respectively stock (existence), or new materials? Answer Refer to the answers to questions 40 and 94 above.

Question 158 Reference According to position plan no. 9 "Station / Halts" is presented for Station / Halts Position the Industrial Line at km 234,209 till km 234,245 needing Plan no. 9 reconstruction. We assume that the track needed to be reconstructed ends at km 234,245. Is this correct? Answer The siding as referred to in the question shall be reconstructed up to km 234+245. Further, refer to the answer to question 136 above.

Question 159 Reference The railway line to be constructed under the present Phase -2 is Contract scope of mainly single line. From the tender documents it is not clear works, Tender whether the track substructure, embankment works, cuttings, Documents, Volume 3, bridges, underpasses, culverts, etc. should be planned and Technical constructed for a single railway line or for a future double railway specifications, Section line? Please clarify this matter. 4.2 (1) Answer Refer to the answer to question 22.

Question 160 Reference Remarks In Volume 5 no cross sections have been provided. Volume 5 Tender Related to Could you please provide these vital drawings at documents question nr. 159 your earliest convenience? Answer Refer to the answer to question 24.

Question 161

34 Reference Please provide the 'Right of Way Drawing' in order for us to be Contract scope of able to determine the preliminary construction limits. works, Tender Documents, Volume 3, Technical specifications, Section 6 (4) a) Answer Refer to the answer to question 25.

Question 162 Reference There a two different legends (for "Sations & Halts" and for Legends for Drawings "Situation") for the materials to be used. We assume that in every drawing the green line means: "New single railway line (S49)" and the orange line means "Second hand single railway line (S49)". Is this correct? Answer It is clear that the green line on the drawings shall mean "New single railway line (S49)" and the orange line shall mean "Second-hand single railway line (S49)”.

Question 163 Reference In the drawing "Situation" no. 20 there is a track drawn in green Drawing "Situation" which ends in this plan. There are no more drawings which shows no. 20 the further run of this track. We assume, that the rehabilitation of this track ends like it is shown in the drawing (without continuation). Is that right? Answer The track referred to in the question shall be reconstructed up to km 3+410, however the precise end point of the works shall be indicated by the Contractor in his design, subject to the approval procedures and in observation of the requirements as included in the Contract.

Question 164 Reference In the drawing "Stations & Halts no. 27 is a track shown which Drawing "Station & ends at km 297 + 894. In the drawing "Situation" no. 56 the same Halts" no. 27 and track ends at km 298 + 800. We assume that the more detailed Drawing "Situation" drawing ("Stations & Halts" no. 27) is correct and the track ends at no. 56 km 297 + 894. We also assume that at the end of the track a buffer stop has to be foreseen. Is this correct? Answer

35 Refer to the answer to question 90 above.

Question 165 Reference In the drawing "Stations & Halts" no. 9 the red drawn track ends Drawing "Station & without a buffer stop. We assume that a buffer stop has to be Halts" no. 9 foreseen. Is this correct? Answer Refer to the answer to question 87 above.

Question 166 Reference In the drawing "Station & Halts" no. 18 after the table the switches Drawing "Station & are located at km 266 + … In the drawing itself there are located at Halts" no. 18 km 267 + … We assume that the drawing is right and the switches are located at km 267 + … Is that right? Switch no. 4 is given in the drawing in our opinion incorrect. We assume the whole switch is build in UIC 60. Is that correct? Answer The positions of the turnouts as referred to in the question shall be in accordance with Volume 5, Part 3, drawing No. 18. The turnout No. 4 on the same drawing shall be of UIC60 type.

Question 167 Reference There are different declarations given for the track in the drawing Drawing "Station & "Stations & Halts" no. 23 and the drawing "Situation" no. 40. We Halts" no. 23 and assume that this part of the track from switch 3 to puffer stop. "Situation" no. 40 Should be drawn in green. Is this correct? Answer The track as referred to in the question shall be marked in green from turnout No. 3 to the end of the siding.

Question 168 We assume that the whole halt Harmanli is part of the project and should be rehabilitated, inclusive the complete connection to the main line. Is this right? Answer Refer to the answer to question 31 above.

Question 169

36 We assume that the station Parmovai completely belongs to the phase 1 and is not part of this tender. Is this correct? Answer The scope of Phase I contract ends at km 202+300. From this point onward the Phase I Contractor shall implement a smooth connection to the existing line. The starting point of Phase II Contract shall be km 202+300.

Question 170 We assume that the station Svilengrad is completely contained in the project. Is this right? Answer Svilengrad station shall be included in the scope of this Contract in accordance with the relevant requirements and drawings.

Question 171 We assume that all the bridges from Parvomai till Jubolkovo must have double track. Is this correct? Answer Refer to the answer to question 22.

Question 172 We assume that the whole layout of the track from Jubolkovo till the end is for a single line. Is this correct? Answer Within the scope of this Contract the line from Parvomai to the Turkish/Greek borders shall be a single-track line. Further refer to the answer to question 22.

Question 173 We assume that in no case retaining walls have to be foreseen in cuttings. In every case it is possible to build a slope. Is that right? Answer Refer to the answer to question 67 above.

Question 174 Reference The railway line to be constructed under the present Phase -2 is Contract scope of mainly single line. From the tender documents it is not clear works, Tender whether the track substructure, embankment works, cuttings, Documents, Volume 3, bridges, underpasses, culverts, etc. should be planned and Technical constructed for a single railway line or for a future double railway specifications. Section

37 line? Please clarify this matter. 4.2 (1) Answer Refer to the answer to question 22.

Question 175 Reference Remarks In Volume 5 no cross sections have been provided. Volume 5 Tender Related to Could you please provide these vital drawings at documents question nr. 174 your earliest convenience? Answer Refer to the answer to question 24.

Question 176 Reference Please provide the 'Right of Way Drawing' in order for us to be Contract scope of able to determine the preliminary construction limits. works, Tender Documents, Volume 3, Technical specifications, Section 6 (4) a) Answer Refer to the answer to question 25.

Question 177 Reference There a two different legends (for "Stations & Halts" and for Legends for Drawings "Situation") for the materials to be used. We assume that in every drawing the green line means: "New single railway line (S49)" and the orange line means "Second hand single railway line (S49)". Is this correct? Answer Refer to the answer to question 162 above.

Question 178 Reference In the drawing "Situation" no. 20 there is a track drawn in green Drawing "Situation" which ends in this plan. There are no more drawings which shows no. 20 the further run of this track. We assume, that the rehabilitation of this track ends like it is shown in the drawing (without continuation). Is that right? Answer

38 Refer to the answer to question 163 above.

Question 179 Reference In the drawing "Stations & Halts no. 27 is a track shown which Drawing "Station & ends at km 297 + 894. In the drawing "Situation" no. 56 the same Halts" no. 27 and track ends at km 298 + 800. We assume that the more detailed Drawing "Situation" drawing ("Stations & Halts" no. 27) is correct and the track ends at no. 56 km 297 + 894. We also assume that at the end of the track a buffer stop has to be foreseen. Is this correct? Answer Refer to the answer to question 90 above.

Question 180 Reference In the drawing "Stations & Halts" no. 9 the red drawn track ends Drawing "Station & without a buffer stop. We assume that a buffer stop has to be Halts" no. 9 foreseen. Is this correct? Answer Refer to the answer to question 87 above.

Question 181 Reference In the drawing "Station & Halts" no. 18 after the table the switches Drawing "Station & are located at km 266 + … In the drawing itself there are located at Halts" no. 18 km 267 + … We assume that the drawing is right and the switches are located at km 267 + … Is that right? Switch no. 4 is given in the drawing in our opinion incorrect. We assume the whole switch is build in UIC 60. Is that correct? Answer Refer to the answer to question 166 above.

Question 182 Reference There are different declarations given for the track in the drawing Drawing "Station & "Stations & Halts" no. 23 and the drawing "Situation" no. 40. We Halts" no. 23 and assume that this part of the track should be drawn in orange. Is this "Situation" no. 40 correct? Answer Refer to the answer to question 167 above.

39 Question 183 Reference In the drawing "Situation" no. 55 the track is pictured in the colour "Situation drawing turquoise. This colour is not named in the legend. We assume that no. 55" this part of the track should be drawn in orange. Is this correct? Answer Refer to the answer to question 26.

Question 184 We assume that the whole halt Harmanli is part of the project and should be rehabilitated, inclusive the complete connection to the main line. Is this right? Answer Refer to the answer to question 31 above.

Question 185 We assume that the station Parmovai completely belongs to the phase 1 and is not part of this tender. Is this correct? Answer Refer to the answer to question 169 above.

Question 186 We assume that the station Svilengrad is completely contained in the project. Is this right? Answer Refer to the answer to question 170 above.

Question 187 We assume that all the bridges from Parvomai till Jabolkovo must have double track. Is this correct? Answer Refer to the answer to question 22.

Question 188 We assume that the whole layout of the track from Jabolkovo till the end is for a single line. Is this correct? Answer Refer to the answer to question 172 above.

40 Question 189 We assume that in no case retaining walls have to be foreseen in cuttings. In every case it is possible to build a slope. Is that right? Answer Refer to the answer to question 67 above.

Question 190 Reference On the "Situation" drawing no. 11 at km 218+700 there are two "Situation" drawing existing tracks displayed. If there is a further switch connection no. 11 between the two tracks (length of dismantling double track) we need to know the distance to the displayed switches at km 218,940, or is there a split of the two tracks in different directions (other line, siding, etc). Please clarify. Answer For the zone as referred to in the question there shall be no turnout connections further on. This is the existing railway track and siding of the old Yabalkovo station and shall be dismantled.

Question 191 Reference On the position drawing no. 8 "Station / Halts" the track (under the "Station / Halts" existing main track) from km 231,415 is supposed to be drawing no. 8 dismantled. Is this correct? Answer It is clear that in accordance with the legend the track as referred to in the question from km 231+415 is marked as "Existing track – left unchanged" and it shall be left unchanged.

Question 192 Reference On the position drawing no. 8 "Station / Halts" there is no existing "Station / Halts" track displayed from switch 28 (new) till S 69 (new). We assume drawing no. 8 that no other track exists here. Is this correct? Answer Between the turnouts as referred to in the question there is existing railway track.

Question 193 Reference On the position drawing no. 8 "Station / Halts" from km 232,100 "Station / Halts" till km 232,640 a none existing track is presented under the second drawing no. 8 new platform. We assume that this track doesn't exist here. Is this

41 correct? Answer Between the kilometer positions as referred to in the question there is existing railway track.

Question 194 Reference On the position drawing no. 9 "Station / Halts" an existing switch "Station / Halts" should be dismantled at S 149 (used). After this existing switch, drawing no. 9 there are no other existing tracks presented. We assume that there aren't any other tracks. Is this correct? Answer After the turnout as referred to in the question there are two tracks with an approximate length of 250 m each. They shall be dismantled. The length of the tracks to be dismantled is indicative only and as explicitly said in the Tender Dossier this is a Design-Build Contract, the Tenderer himself shall, in accordance with the provisions as in the Tender Documents, make all investigations/studies and obtain all additional information he considers appropriate for preparing his tender.

Question 195 Reference On the position drawing no. 9 "Station / Halts" a second track "Station / Halts" which is shown below the industry track at km 234,270 should be drawing no. 9 dismantled. We assume that from km 234,270 this track doesn't exist. Is this correct? Answer The track as referred to in the question is the existing railway line to Svilengrad and it shall be dismantled.

Question 196 Reference On the position drawing no. 22 "Situation" at km 236,588, "Situation" drawing km 237,000 and km 237,600 there are displayed three crossings of no. 22 non used railway tracks. We assume that there is only a track dismantling of these 3 tracks in the ambit of the building site of the new alignment necessary. Is this correct? Answer The question is not clear. If it refers to crossing of the new line with the existing one, then it is clear that these crossings shall be included in the dismantling works. In any case, as explicitly said in the Tender Dossier this is a Design-Build Contract and the Tenderer himself shall, in accordance with the provisions as in the Tender Documents, make all investigations/studies and obtain all additional information he considers appropriate for preparing his tender.

42 Question 197 Reference On the position drawing no. 21 "Station / Halts" under the switch 1 "Station / Halts" (old) there are three existing tracks displayed as track dismantling. drawing no. 21 We assume that only the displayed tracks to km 271,936 and km 271,954 (to the sheet lines) shall be dismantled. Is this correct? Answer Within the zone as referred to in the question the Contractor shall design and implement the connection to the ramp siding and to the other existing industrial branches.

Question 198 Reference On the position plan 25 "Station / Halts" at km 286,300 the existing "Station / Halts" plan alignment track is not clear. In our opinion there is missing a no. 25 switch which should be dismantled. Please clarify. Answer Within the zone as referred to in the question there is an existing turnout that shall be dismantled.

Question 199 Reference On the position drawing no. 25 "Station / Halts" from km 286,450 "Station / Halts" to km 286,650 there is no other existing track displayed in drawing no. 25 direction industry track. The track between the new tracks 2 and 3 ends at km 286,450 and there is no access to the industrial line. We assume that there is no existing track in this section. Is this correct? Answer Between the kilometer positions as referred to in the question there is existing railway track.

Question 200 Reference On the position drawing no. 26 "Station / Halts" there is an existing "Station/Halts" track (side track) from switch 3 (old) to km 295,880 displayed. We drawing no. 26 assume that this track end at km 295,880. Is this correct? Answer The question is not clear. If it refers to the turnout at km 296+300, then the track from this turnout ends at km 295+800.

Question 201 Reference On the position drawing no. 27 "Station / Halts" are presented at "Station / Halts"

43 km 296,750 (under mechanize unload low ramp, below the left drawing no. 27 platform) two existing switches. We assume that these are switches 300-1:9 and that they must be dismantled. Is the switch size correct? Answer The turnouts as referred to in the question are of S49 1:9 R300 type.

Question 202 Reference On the position drawing no. 27 "Station / Halts" till km 296,800 "Station / Halts" there are two existing tracks heading south (direction cars repair drawing no. 27 station). We assume that there are no existing tracks southwards of km 296,800. Is this correct? Answer The question is not clear. From the drawing as referred to in the question it is clear which types of works shall be applied to the various sidings. In any case, as explicitly said in the Tender Dossier this is a Design-Build Contract and the Tenderer himself shall, in accordance with the provisions as in the Tender Documents, make all investigations/studies and obtain all additional information he considers appropriate for preparing his tender.

Question 203 Reference On the position drawing no. 27 "Station / Halts" from 296,690 till "Station / Halts" km 297,020 a track is displayed as dotted line. Because of the drawing no. 27 existing platform in this section, we assume that this track does not exist any more. Is this correct? Answer Refer to the answer to question 82 above.

Question 204 Reference On the position drawing no. 27 "Station / Halts" from km - 296,961 "Station / Halts" to km 297,021 there is an existing track (below the most southern drawing no. 27 new platform). We assume that before km 296,961 there is no other existing track. Is this correct? Answer Before the kilometer position as referred to in the question there is existing track.

Question 205 Reference On the position drawing no. 27 "Station / Halts" till km 297,445 "Station / Halts"

44 there is an existing side track below switch 13 new. We assume drawing no. 27 that from km 297,445 there is no other existing track. Is this correct? Answer The turnout as revered to in the question is located over the existing main track in the station.

Question 206 We kindly request postponement of the Tender submission deadline from 25th April 2007 until the end of May 2007. Taking into consideration large variety and complexity of the Works, we believe an additional month will allow the tenderers to prepare their offers with more precision and scrupulosity. In consequence, more accurate offers will be submitted to the Employer. Answer Refer to the answer to question 8 and to Corrigendum No. 1 to the Works Procurement Notice for the tender published on 18th April 2007 in OJ S 75, on the EuropeAid website and on the website of the Contracting Authority.

Question 207 On September 8 was held a clarification meeting, during which several attendees raised the question of the modification of the technical selection criteria. Your answer was very clear, indicating that there will be no changes in the technical selection criteria, in accordance with article 5.3.3 of PRAG. You also mentioned that this position would be confirmed in writing to all participants. We understand that an eligible candidate (sole of in a consortium) should have performed at least three projects which include simultaneously civil works, track works and electrification works. These, at least three projects, should also have been executed on a Design & Built basis, as it is the case on the project in reference. Is our understanding correct? If your answer is negative, we kindly ask you to provide us with clear and detailed details on the term "Similar Nature". Answer In order to answer to the question assumption has been made that it refers to the Mandatory Information meeting held on 9th March 2007 in compliance with the Tender procedure. Regarding any changes of the selection criteria refer to the answer to question 7. For the remaining parts of the question refer to the answers to questions 5 and 6.

Question 208 Will a reconstruction of the relay interlocking system in Dimitrovgrad station be necessary due to the works that have to be performed during this Second Phase of the Project? Answer Refer to the answer to question 23.

45 Question 209 It is not clear from the Technical specification what works have to be performed during this Phase of the Project with regard to the existing trunk cable. Please provide some additional clarification: - Does the existing trunk cable meet the requirements for operation and traffic on an electrified section? - With the reconstruction of the railway track the trunk cable at certain section remains outside of the envelope of the Bulgarian railways. What is the Employer's position regarding this situation? Answer Refer to the answer to question 23.

Question 210 Do the cables for the intra-station connections meet the requirements for operation and traffic on an electrified section, and do they have to be partially or fully replaced with new ones? Answer Refer to the answer to question 23.

Question 211 Will the existing signals and turnout switches be replaced or only shifted? Will a second use of signals and turnout switches dismantled from the stations that are planned to be shut down be allowed? Answer Refer to the answer to question 23.

Question 212 From the Technical specification it doesn't become clear whether the adoption of the approved catenary construction for the First Phase is advisable or not during the tender preparation for the Second Phase of this Project. With regard to this we shall need some clarifications to the following issues: - Does the Employer have a different vision for the contact wire height above the level of the rail head from the one quoted in "Technical Specification for operational compatibility for "Energy" subsystem" - Attachment No. 4 to art. 5, item 1 from Ordinance No. 57? In the TD, Volume 3 Technical Specification, Part 4 Design of Electrification, item 16.5.5.(3) is stated: "The design nominal contact wire height for Plovdiv to Svilengrad tine shall be confirmed to the Contractor upon confirmation of the rolling stock(s) and/or the pantograph(s) details" - Will it be possible to use the power simulation for the First Phase of the Project - Krumovo - Parvomay if it already belongs to the Employer or should be envisaged costs for performing a new one? In the TD, Volume 3 Technical Specification, Part 4 Design of Electrification, item 16.5.2.(2) is written: "The interactive dynamic performance of the OCLS and the pantograph systems shall be simulated in order to anticipate the dynamic

46 performance of the OCLS with various introduced characteristics of design." and also in TD, Volume 3 Technical Specification, Part 4 Design of Electrification, item 16.9.1.(3): "As part of power simulation and system dynamic validation the Contractor shall select and propose a suitable contact wire (see contact wire material and wear) to satisfy all mechanical and electrical design and other project requirements specified in this document" Answer The contact wire height shall be in accordance with the provisions of Regulation No. 57 of 9th June 2004 issued by the Ministry of Transport and Communications, subject to the approval procedures and in observation of the requirements as included in the Contract. The power simulation for Phase I of the project shall be submitted to the Contractor after the signing of the Contract. Notwithstanding that, the Contractor shall comply with the relevant provisions as in Volume 3. Technical specifications and shall perform power simulations for the Dimitrovgrad – Turkish/Greek borders line, subject to the approval procedures and in observation of the requirements as included in the Contract.

Question 213 Is it necessary for the energy transfer in the catenary between Bulgaria and Turkey to be registered? Should in regard to this be planned additional equipment and if yes - please specify where? Answer It is explicitly stated in Volume 3, Part 4. Design of electrification, item 15.5.5.1.(2) that "The sectional post shall be assembled with a current measuring transformer to read the transmitted energy between the two countries."

Question 214 Should the requested protection of the catenary insulators from nesting birds be performed along the whole track or only in certain locations? Answer The protection of the catenary insulators from nesting birds shall be performed for the whole line section included in the present Contract.

Question 215 Should an additional stage protection be envisaged when a Basic Sectioning Points is in operation? Answer Refer to the answer to question 113 above.

Question 216

47 What are the lengths of the power supply lines 110 kV for the Simeonovgrad and Svilengrad substation and will it be necessary to be performed terminal fields in the relevant NEC power supply stations? Answer Please refer to Volume 5, Part 5, drawings 57/85, 58/85, 59/85 and 60/85. Furthermore, refer to the answer to question 124 above.

Question 217 According to the Tender documents, volume 1 (Instructions to tenderers), paragraph 4.2.2.3 (Technical and Professional capacity), subparagraph d) the Lead Party must have the plant and equipment (either owned or leased/hired) necessary to enable him to carry out at least 50 % of the contract by himself. Does above-mentioned subparagraph mean that the Lead Party must have the proportion of responsibility in Joint Venture/Consortium at least 50 % ? Answer The proposed proportion of responsibilities between members of a Joint Venture/Consortium (in %) shall be in accordance with the data as indicated in the selection criteria and shall be given by the Tenderer in Form 4.6.5, Data on Joint Ventures, as part of the tender in compliance with Volume 1. Instructions to Tenderers, Section 4.

Question 218 According to the Tender documents, volume 1 (Instructions to tenderers), paragraph 4.3 the members of Joint Venture/Consortium must submit the Powers of Attorney for the Lead Party. Must the signatures of signatories on this Powers of Attorney be legalizated ? Answer The Powers of attorney to be provided by the members of the Joint Venture/Consortium in accordance with Volume 1. Instructions to Tenderers, item 4.3, shall be signed by legally empowered signatories representing all the individual members. The Powers of attorney should be legalized.

Question 219 In case that the amounts mentioned in the originals of tenderer's documents are not in EURO what currency exchange rate should be applied for conversion of foreign currency into EURO? Answer As explicitly stated in the Volume 1. Instructions to Tenderers, item 16. Currencies of Tender and Payment, "The currency of the tender is the Euro. All sums in the Breakdown of the Overall Price, the questionnaire and other documents must be expressed in Euro, with the exception of the originals of bank and annual financial statements." It is up to the Tenderer to decide what conversion rate to apply, however the Tenderer shall indicate this in the documents.

Question 220

48 Reference Gergana Halt Vol 3, part2, Vol 3, part2, page 7 states that this halt is to be rehabilitated. page 7 The Tender Documents don't give any information about this halt, neither on the drawings nor in the Technical Specifications. Please state clearly what is required. Answer The Gergana halt building shall be rehabilitated. Refer to the answer to question 66 above.

Question 221 Reference Generalovo Halt Vol 3, part2, Vol 3, part2, page 7 states that this halt is to be rehabilitated and a new page 7 subway has to be provided. The Tender Documents don't give any information about this halt, neither on the drawings nor in the Technical Specifications. Please state clearly what is required. Answer The Generalovo halt building shall be rehabilitated. Refer to the answer to question 66 above. There shall be no pedestrian subway at this halt.

Question 222 Reference Cover Culvert km 296,043 Vol 5, Part 01 Vol 5, Part 01 drwg. no 55 shows a coffer culvert crossing 2 railway drwg. no 55 lines. Vol. 4, part 4, Vol 5, part 4, drawing No. 87 shows the Coffer Culvert to be 8,20 m drawing No. 87 long. Parallel to the 2 railway lines are further 5 railway lines planed. Please clarify whether you want the coffer culvert to cross these further railway lines as well, or if not, please explain the purpose of the coffer culvert. Which document of the Tender documents has priority if such discrepancies occur Answer The culvert as referred to in the question shall cross all the tracks and shall ensure the dewatering of the station area.

Question 223 Reference Railway bridge km 297+466: Vol 5 Part 01 Vol 5 Part 01 drwg. no. 55 shows a bridge in plan with 1 old and 1 new drwg. no. 55 track.

49 Vol. 5 Part 04 drwg. no. 77 shows a cross section of this bridge with 1 track only. Furthermore, Vol 5 Part 01 drwg. no. 55 also shows a new single railway line in green. Therefore this bridge ought to be designed to take 2 or 3 tracks. Please clarify how many tracks will cross this bridge and at what level, i. e. as mentioned before, we need cross-sections. Answer The railway bridge as referred to in the question shall be for 3 tracks.

Question 224 Reference Possessions Vol 3, part 7 Vol 3, part 7 page 2. Here it is mentioned, that possession are possible page 2 varying up to 6 hours. It is also mentioned that alternative transport for passengers has to be provided at the Contractor's cost. This is also valid for possessions of longer durations and line closures. 1. Please note that temporary bridges have to be installed in order to maintain the rail traffic. For the installation and removal of these temporary bridges possessions longer than 6 hours are necessary. Please confirm that these possessions will be possible. 2. We assume, that alternative freight transport during possessions or longer line closures will be organised by the beneficiary. Please confirm. Answer Refer to the answer to question 20.

Question 225 Reference Noise barriers Vol 3, part2, Vol 3, part2, page 8 states, that noise barriers are included in the scope page 8 of Contractors Works. In order to determine where noise barriers are to be placed a thorough analysis is to be made and certain permissible values are to be given by the beneficiary. Please provide the necessary required analysis and the permissible values. Answer As explicitly said in the Tender Dossier this is a Design-Build Contract. It is for the Contractor to make the appropriate assumptions/calculations in his design (subject to the approval procedures and in observation of the requirements as included in the Contract) for all the elements included in the scope of the Contract (including the noise barriers) in accordance with the standards and the regulations in force.

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Question 226 Reference In case of railway bridges for future double railway line, could you Contract scope of please clarify to which extent the bridge superstructure has to be works, Tender constructed? Documents, Volume 3, Technical specifications, Section 4.2 (1) Answer Refer to the answer to question 22.

Question 227 As prospective tenderer, considering the complexity of the project's evaluation, we hereby respectfully apply for an extension of time of 45 days for the submission of tender proposal. Answer Refer to the answer to question 206 above.

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