Response to Information Request - Received on 19/04/2012 · OPW11/0335

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                                                  Residential Development
                                   215-219 David Low Way, Peregian Beach
                            Draft Acid Sulfate Soil Management Plan (ASSMP)
         Element                       Acid Sulfate Soil Management Plan
         Tasks/Actions (cont’d)             criteria for a Udal estuary,

                                       ASS Treatment Off-Site

                                        Where soils are required to be treated off-site, treatment of the soils will be undertaken
                                        either:               ,

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                                        .   in accqrg rice         wittf’;!h,l;l~pr visions of this ASSMP for on-site treatment, modified                     as

                                            neces.~ry for use ~f~n"accessible alternative off-site treatment area; or
                                        .   in acc6rqa,~c~,Withihe ~pp~ft,for the designated off-site treatment area.
                                                                                  .

         Performance Indicators         Retained Water :’"    ’
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                                        Laboratory testing of ~jwater encoQ’rite!e,d during basement excavation will be carried
                                        out for pH, dissolved oxygen a.nJ! !uJbidit{..Vlese parameters will be assessed against
                                        the equivalent water quality o i tiv : .t~ri.a;Cor a tidal_l}~tuary as follows:
                                                                                                                               .


                                                      pH                          ,’,                p;S    .5" ’..
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                                                      Disturbed Oxygen                     "/’S -100% sat ration,.
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                                                     Turbidity                                       20NJV’                    ,




                                        Treated Soil                                                  ?~.i:’"           ’J>"

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                                       Chromium suite testing carried out for validation of applied liming rates will be deemed to
                                       be acceptable if the net acidity level recorded is < ,02%S.

         FrequencylTiming               Retained Water
                                        Water quality within basement excavations will be monitored regularly during soil
                                        removal and particularly following substantial rainfall events.


                                       Treated ASS
                                        The sampling and testing of any lime treated soils will be subject to validation testing at a
                                        rate of one test per 400m3 of treated soil, which will be repeated until satisfactory results
                                        are obtained.

         Contingency Plan               If lime trealment of soils is unsuccessful whereby performance targets are not being met
                                        as indicated   by the validation testing and water quality testing procedures then:
                                        .   the soil removal schedule will be reassessed and action taken to determine the
                                            problems causing the unsuccessful performance;
                                        .   if the problems are related to ineffective implementation of the ASSMP, then the
                                            plan will be audited by a person nominated by the project manager to ensure
                                            improved implementation (monitoring and testing will be increased to ensure
                                            compliance with the established standards); and
                                        .
                                            any significant changes to the ASSM P will be subject to discussions with the
                                            relevant regulatory authorities.

         Responsibi!ty                  The   satisfactory implementation of the ASSMP by                                          the contractor will    be the
                                        responsibility of the project manager, who will ensure:
                                        .   the contractor is made aware of site specific conditions and implications for the
                                              management of sediments within the site;
                                        .   the contractor complies with the elements of the ASSMP and erosion control
                                            measures        proposed;
                                        .   correct methods for the collection of samples and testing are employed and that the
                                              results are reported to the relevant site authorities; and

                                        .   corrective action measures proposed by the contractor are approved.
         Responsibility (cont’d)
                                        The contractor’s responsibilities will include:

                                        . awareness           of site conditions and                    requirements for the implementation of the
                                            ASSMP;

        Residential Development                                                                                                                          Appendix C
        215-219 David Low Way, Peregian Beach                                                                                                            Page 2 of 3
        Project No. 07160                                                                                                                           18 June 2007