Acid sulfate Management Plan Reference Document OPW19-0239 · OPW19/0239

PROCEDURE B
Treatment and Verification of Excavated ASS


B1.      GENERAL
The procedures outlined below are provided for the on-site treatment and verification of identified ASS
materials located across the proposed development site to be excavated during earthworks and
construction.

B2.      OBJECTIVES
     Appropriately treat and manage ASS materials so as to minimise adverse effects on the natural and
      built environment (including infrastructure).

     Comply with conditions of licences, permits or other approvals issued for the project.

B3.      STATUTORY REQUIREMENTS AND GUIDELINES
1)    Queensland Acid Sulfate Soil Technical Manual: Soil Management Guidelines V4.0, 2014. Dear, S-E.,
      Ahern, C. R., O'Brien, L. E., Dobos, S. K., McElnea, A. E., Moore, N. G. & Watling, K. M. Department of
      Science, Information Technology, Innovation and the Arts, Queensland Government

2)    Ahern, CR., Ahern, M.R. and Powell, Guidelines for Sampling and Analysis of Lowland Acid Sulfate
      Soils in Queensland, 1998

3)    State Planning Policy – state interest guideline, Water quality, August 2014

4)    Environmental Protection Act 1994

5)    Environmental Protection Policy (Water) 2009

B4. TREATMENT MEASURES
B4 (a) Earthwork Strategy
An earthworks strategy shall be developed to plan and track movement, treatment and verification of
confirmed ASS materials.

B4 (b) Treatment Facility
A treatment area shall be constructed within the site in general accordance with the requirement detailed in
Soil Management Guidelines, 2014 (refer Figure B4-1) and the following additional requirements:

     The treatment area should be located within a suitable area of the site on non-ASS materials.

     The treatment area shall be prepared by stripping vegetation, topsoil and soil containing significant
      amounts of organic material and compacting the surface with a smooth drum roller. An area of at least
      1 m width shall be left between the treatment area and bunds to allow collection of runoff and direction
      to sumps. Refer to Procedure C for monitoring and treatment requirements applicable to collected
      waters.

     A guard layer of fine ground agricultural lime shall be applied to the treatment areas prior to placement
      of soils at a minimum rate 5 kg/m2 for each 1 m height of soil to be treated.

The treatment facility shall be inspected on a daily basis and maintained to prevent escape of soils or water
from the facility.




April 2019
J000799-003-R-Rev0 – Procedure B                       1/3