Stormwater Management Report

11 DUST & AIRBORNE PARTICAL CONTROL


        Person Responsible     Contractor’s Site Manager

        Operational Policy     To achieve acceptable air quality standards through the control of
                               the movement of dust offsite from the site works.

        Performance criteria   The target level of complaints by nearby residents is no more than
                               one in every seven day period. Ambient air quality should not
                               deteriorate by more than 30% over a period of seven consecutive
                               days. Dust deposition at any nearby residence should not exceed
                               100mg/m2/day.

        Implementation         The minimisation of the movement of dust offsite will be achieved
                               through the following onsite practices.
        Strategy
                                  1. All permanent bunds and reshaped areas will be
                                       revegetated within ten days after completion of earthworks.
                                       (including service trenches)
                                  2. Stockpiling onsite will be minimised where possible.
                                  3. A water cart will be bought to site if required or watering via
                                       the site water supply will be conducted during high-risk
                                       times such as high winds and low rainfall and after the
                                       receipt of a complaint.
                                  4. Dusty activities to cease if wind speed exceeds 10m/sec.
                                  5. Contractor’s staff to be trained to implement dust
                                       minimisation measures.
        Monitoring             Dust inspections will be carried out to verify that dust mitigation
                               measures are being implemented. Dust monitoring will be
                               conducted upon receipt of complaints by residents. If dust
                               monitoring is to take place, the following will occur,

                               -Temporary dust deposition gauges will monitor the movement of
                               dust offsite at the nearest residences adjacent to the site in the
                               predominant wind direction.

        Auditing               Management to review the complaints register weekly and
                               corrective action taken.

        Reporting              The contractor is to notify NSC & EPA of a possible environmental
                               nuisance on receipt of 3 or more dust complaints in any 24hr.
                               Reports are to be provided to NSC upon request

        Identification of      Any dust related complaints by residents will indicate a failure of
                               dust control measures.
        incident or failure

        Corrective Action      Locate the source of the dust and apply the following-

                                    1. Apply water sprays to the vegetation
                                    2. Cover or water exposed areas
                                    3. If dust persists, cease the dust creating activities.
                               All dust complaints to be addressed in consultation with NSC.




HR DESIGN                                   Reference No: 18-0165B                                     Page 12 of 15