Ridgewood_12-002_Odour_AdditionalInfoRequest_L181BH_110913

Mr David Milligan, W Donald Milligan Pty Ltd                                  11 September 2013
Re: Response to Sunshine Coast Regional Council Outstanding Issues Request – Proposed Poultry
      Growing Sheds, Ridgewood                                                 L18113/BH/12-002



          The volume of litter has been calculated as follows for the purpose of
          designing the stockpile areas:

                 •   75mm depth of litter within the sheds (conservative assumption)
                 •   full litter replacement of all sheds at the end of each batch
                     (conservative assumption)
                 •   total floor area of 8 sheds 13,695m2
                 
 Total litter volume of 1027m3 per batch3

          It has been determined by the proponent that the use of a compost turning
          machine (tow-behind tractor) will be the most efficient means of stockpiling
          the spent litter and maintaining aerobic conditions to minimise odour
          emissions during the stockpiling period. Potential systems are manufactured
          by ‘JPH Equipment’ (http://ozturners.com.au/icwp/products/compost-turners/)
          and          Seymour          Rural         Equipment         Pty        Ltd
          (http://www.seymourrural.com.au/compost-turner-4000.html)        and     can
          integrate stockpile covers (i.e. pick and replace covers after turner passes
          along stockpile). The compost turning machines produce linear stockpiles
          approximately 1.5 metres high by 3 metres wide.

          Advice from the manufacturer is that a Seymour ‘Compost Turner 4000’
          produces linear stockpiles that will hold approximately 2.5m3 of litter per lineal
          metre of stockpile.

          The required length of stockpiles is calculated as follows:

                 •   Total litter volume of 1027m3
                 •   Stockpile capacity of 2.5m3 of litter per lineal metre
                 
 Total 410 lineal metres 4 of stockpile required

          Based upon advice from Seymour Rural Equipment Pty Ltd, Callaghan & Toth
          has designed two bunded stockpile storage areas to accommodate up to 486
          lineal metres of the litter stockpiles. This provides a reserve stockpile length
          of 76 metres as a redundancy in the event that a larger litter volume is
          produced from the sheds than anticipated or that a smaller volume compost
          turning machine is used as the site.

          The two litter stockpile areas are shown on Callaghan & Toth Plan 01 Rev D
          Page 9 (September 2013) (refer Attachment 1) and are generally described
          as follows:




3                      3
    0.075 x 13695 = 1027m
4          3       2
    1027m ÷ 2.5m = 410 metres


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