Day 011 - 12 Jul 94 - Page 54


     
     1        produce expanded polystyrene, assuming that is what you
              wanted to do.
     2
              What I did was to actually have a look at the estimates
     3        that the various people had done to see whether they
              accorded with the independent advice which was being
     4        provided by people like the Stratospheric Ozone Review
              Group as to what might be sensible course to undertake.
     5        I can certainly abstract the particular document that
              I looked at from the lever arch file and will quite
     6        happily present that afterwards for your perusal.
 
     7   MISS STEEL:  Do you personally think that HCFC-22 has a
              significant environmental impact?
     8        A.  I personally agree with the recommendations that the
              Stratospheric Ozone Review Group have made which is that
     9        it should be phased out as soon as possible.
 
    10   Q.   And that it has a significant environmental impact?
              A.  That the HCFC-22 used by all the people who currently
    11        use it has a significant environmental impact.  In the
              amount that we are talking about, relating to this
    12        particular case, no, I do not think it has any more.
 
    13   MR. JUSTICE BELL:  No, but you cannot put it in compartments,
              can you?
    14        A.  No.  HCFC-22 is now thought to be something that
              should be phased out rapidly, so, yes, it does have a
    15        significant environmental impact.
 
    16   MISS STEEL:  I just wanted to ask you a couple of questions
              about methane:  Do you know the quantity of methane
    17        produced by landfill sites?
              A.  Approximately, yes.  In the United Kingdom, it is, in
    18        fact, the next to the largest source of methane after, in
              fact, leakage from natural gas pipelines.  So it is
    19        actually more than the amount of methane produced by
              cattle and sheep.  Worldwide, it is of a similar level to
    20        what you actually get from swamps.
 
    21   Q.   So that is roughly a hundred million?
              A.  It is between 50 and a hundred million because it
    22        depends on whether the landfill sites have been properly
              documented.  Do not forget that in the United Kingdom many
    23        of the landfill sites from which methane is now coming out
              were actually landfill sites which are very old and that
    24        not all, in fact, are as well mapped as they should be.
              So, whatever estimate you make from landfill sites is
    25        going to have a distinct error on it.
  
    26   Q.   I think you were giving us figures this morning -- I do 
              not know whether you could find those again -- I have an 
    27        another question on this, so it might be easier for you,
              that is all?
    28        A.  Certainly if could I have a look in my bag, my Lord?
 
    29   MR. RAMPTON:  Professor Duxbury, have you that book you showed
              me this morning?
    30
         MR. JUSTICE BELL:  You take your bag back to the witness box.

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