Questions of clarification - Chiltern Evergreen3

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C. Method Statement 1, CRCL/RI/3, Part 95. Should there be C6.6, between C6.5 Pressure Monitoring and C6.7 Lighting Trial Surveys?6. C12, please detail what are the “normal and expected parameters of inter annual variation”.7. D5, the clearance between the top of trains and the tunnel will increase from 0.7 to 1.3m. Is thisjust for passenger trains or will the clearance remain increased when freight trains are carryingshipping containers?D. Method Statement 2, CRCL/RI/3, Part 10Page 8 “On average the lit period will be 1 minute for each passenger train and two minutes foreach freight train.”8. Is the period (≥45s) during which the lights come on gradually and reach full intensity included inthe timings above?E. URS Report9. Figure 1 shows the track remaining in the centre of the tunnel after the phase 2A works. Pleaseconfirm where the track will be after the Phase 2A works.10. Please provide a copy of Figure 2 which shows the measurement of the smallest clearance betweenthe side of the tunnel and the freight containers and also the closest distance that the freightcontainers are to each other. From the diagram it looks as though the smallest clearances are at thetop edges of the containers.Page 12, “South Harrow tunnel is both slightly longer and slightly larger in cross section whencompared to Wolvercot. The net effect of this is that similar trains passing through the existingWolvercot tunnel would be expected to produce peak pressures around 20% higher, based on thetheoretical models.”Page 13, 3.1, “This is believed to be a conservative approach, and yields for passenger trains apressure of 2.4kPa. Actual pressures based on those recorded in the South Harrow Tunnel forcrossing trains did not exceed 1.5kPa.”11. In the conclusions provided on page 15, have the pressures (0.8 kPa for passenger trains, 1.5 kPa inthe unlikely event trains pass in the tunnel) taken into account:a. the 20% higher peak pressures that would be expected in Wolvercote Tunnel?b. the new position of the track after Phase 2A?12. Please explain the last paragraph on page 14 as the cited reference associated with it is not helpful.In particular what is meant by “exposed location” and “a 1 in 50 year wind”?F. Statement of Common Ground CRCL/RI/153.16 “The Reasoned Statement Annexes include a Method Statement on the proposed works andtheir potential impacts and a Method Statement setting out the delivery information i.e., theproposed mitigation and monitoring programme.”2
13. Has Natural England been provided with any supporting information about the potential impactson bats from increasing the speed and frequency of trains in Phase 1?3.21 Concern A “Surveys to assess whether any bat casualties currently occur have not takenplace.”14. Does Chiltern Railways now know how many bat casualties currently occur? If so, please providedetails.3.27 “there was no long-term disturbance to bats using the tunnel from the lighting.” (emphasisadded)15. Please quantify what is meant by “long-term”?3.31 “Monitoring will provide supplementary baseline information in 2012 on the species, numbersand colonies of bats using the tunnel to enable comparisons to be made with surveys undertakenpost-construction.”16. Will the surveys conducted in 2009, 2010 and 2011 also be used to produce the base-line?17. If less species of bat use the tunnel in 2012 than 2011, will the reduced number of species be usedas the base-line?18. If there are fewer bats using the tunnel, as has been the case each year since the “enhanced”BicesterLink service was introduced in May 2009, will the lower number in 2012 be used?3.33 “Any significant decrease in bat use of the tunnel, or significant increase in bat casualtieswill be further investigated and, remedial action implemented by Chiltern Railways, in agreementwith Natural England.” (emphasis added)19. Please quantify “significant”.20. Has Chiltern Railways and/or Natural England already considered what would be appropriateremedial action? If so, please provide details.3.40 “In the event two unscheduled trains were to cross within the tunnel the pressure changewould be somewhat greater.”21. What is an “unscheduled” train?22. Please quantify “somewhat”.3.41 “Based on the results of these surveys, and evidence of the effects of changes in air pressureon bats elsewhere, Natural England is now satisfied that the changes in air pressure resulting fromincreases in train speed will remain below the level that might cause harm to bats roosting in orusing the tunnel.”23. Does the “evidence of the effects of changes in air pressure on bats elsewhere” only relate to batdeaths at wind turbines? If not, please provide further details.3.44 “Under Regulation 58 of the Habitats Regulations (and other provisions), Natural England haswell established powers to enforce the provisions of the EPS Licence, if necessary, through thecourts.”3
Page 1: OBJ/234/15RE-OPENED PUBLIC INQUIRY

Questions of clarification - Chiltern Evergreen3

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