Development Application part 2 OF 2 All of CD, Information in notes - MCU12/0216

CSR Building Products Limited                                                                                         Page 23
West Ridge Quarry
Site Based Management Plan



3.2          Air Quality (Dust)

3.2.1        Purpose
      The EP Act and the associated Environmental Protection (Air) Policy 2008 provide the legislation and regulatory
      controls for management of emissions to the atmosphere.
      Quarry activities on-site that may generate dust emissions include:
      -   wind action on topsoil stockpiles and disturbed areas;
      -   screening operations;
      -   topsoil/overburden stripping, extraction and transportation (earthmoving machinery ground-interaction, materials
          digging, loading and dumping, haul truck tyre/unsealed road interaction, unsealed roads, material spillage from
          haul trucks);
      -   product stockpiling and dispatch (stockpiles and stockpile pads, product loading, truck tyre-road interaction,
          material spillage from trucks); and
      -   rehabilitation works.

3.2.2        Operational Policy
      To protect the amenity of surrounding rural dwellings and environment.

3.2.3        Performance Targets
      Dust and particulate matter not exceeding the following levels when measured at the boundary of any sensitive
      receptor:
      -   dust deposition of 120 mg/m²/day, when monitored in accordance with Australian Standard AS 3580.10.1
          Methods for sampling and analysis of ambient air – Determination of particulates – Deposited matter –
          Gravimetric method; and
      -   an aerodynamic diameter of less than 10 µm (PM10) suspended in the atmosphere of 50 µg/m³ over a 24 hour
          averaging time when monitored in accordance with Australian Standard AS 3580.9.6 Methods for sampling and
          analysis of ambient air – Determination of suspended particulate matter – PM10 high volume sampler with size-
          selective inlet – Gravimetric method.

3.2.4        Implementation Strategy/Mitigation Measures
Specific control measures to be implemented for particular operational phases or activities include, but are not necessarily
limited to:
      -    watering haul/access roads;
      -    managing dust emissions from stockpiles in high wind speed events through use of sprinklers/water sprays;
      -    dampening down of cleared areas, extraction working areas, haul roads, stockpiles and other hardstand areas by
          water spraying when visual surveillance indicates excessive dust generation and propagation from point or
          mobile sources leaving the Site boundary;
      -    limiting topsoil/overburden removal at any one time to that necessary while providing for effective production;
      -    limiting removal of topsoil/overburden to periods of favourable weather conditions;
      -    positioning the quarry and associated activities to utilise the surrounding topographic as a wind break where
          practicable;
      -    restricting vehicle and mobile machinery movements to designated routes and hardstand areas;
      -    covering temporarily (e.g. tarping) or revegetating topsoil stockpiles;
      -    enforcing a <40 kph maximum speed limit on unsealed haul and internal roads;
      -    levelling of loads prior to truck exit from the Site to avoid spillage;
      -    clearing of spillage from side rails, tailgates and draw bars of road trucks (following loading);
      -    covering all loads of material leaving the Site;
      -    installing riffle bar/vibration grid or rubble zone at the Site exit;
      -    ensuring employees and contractors are aware of dust minimisation practices; and
      -    daily visual surveillance of control measures to ensure system performance accords with design and
          implementation criteria.



December 2012 / file ref. 1271_610_001                                                                     GROUNDWORK p l u s