Ridgewood_12-002_PrelimOMP_110913

                                                                       MWA Environmental




       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 3 of stockpile required

       Based upon advice from Seymour Rural Equipment Pty Ltd, Callaghan &
       Toth has designed the 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.

       Available compost turning machines include the ability to pick up and relay
       the covers over the stockpiles.

       The litter stockpiles will be turned at least weekly but potentially twice
       per week to maintain aerobic conditions. Litter turning should only be
       undertaken when prevailing winds are:

              • below 10 km/h to minimise fugitive dust and odour emissions; and
              • from the northeasterly to southeasterly sector to ensure that odour
                 emissions are directed away from sensitive receptors.

       In order to minimise the potential cumulative odour impact from the
       stockpiling and spreading of the spent litter, the proponent intends to
       spread all litter within 4 to 5 weeks of the shed clean-out. Under this
       operational regime, odour emissions from the stockpiling and spreading of
       the spent litter occur during the period when only minor emissions are
       generated from the broiler sheds.

       Further detail in relation to the potential odour impact of the litter stockpiling
       is provided in the MWA Environment letter Response to Sunshine Coast
       Regional Council Outstanding Issues Request – Proposed Poultry Growing
       Sheds, Ridgewood (L18113/BH/12-002, 11 September 2013).

       The stockpiling of litter will be undertaken by on-site manager and existing
       farm staff. No specific vehicle movements will be generated on the external
       road network through the stockpiling and application of litter within the
       avocado orchard. The replacement of imported fertiliser with the litter will
       reduce the traffic generation of the existing avocado orchard.




3 1027m3 ÷ 2.5m2 = 410 metres



Ridgewood 12-002                              12                       11 September 2013