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1 ASBESTOS WHAT LIES BENEATH

2 WHAT IS ASBESTOS Natural fibrous hydrated silicates Serpentine: long, soft, curly Amphiboles: straight, hard, needle-like Six common varieties: chrysotile, amosite (fibrous grunerite), crocidolite, anthophyllite, tremolite and actinolite

3 WHAT IS ASBESTOS Flexibility High tensile strength Incombustibility Resistance to high temperatures Low thermal conductivity Resistance to chemical and biological breakdown Resilient Electrical resistance Cheap and abundant Chrysotile Amosite Crocidolite 3

4 WHAT IS ASBESTOS? Friable Non Friable

5 JOURNEY OF A FIBRE Inhalation Ingestion Dermal 5

6 JOURNEY OF A FIBRE The Mesothelioma Center

7 JOURNEY OF A FIBRE The Mesothelioma Center

8 ASBESTOS RELATED DISEASES Three primary diseases associated with asbestos exposure Asbestosis Lung Cancer Mesothelioma

9 ASBESTOS RELATED DISEASES Estimated mortality from past exposure to asbestos for selected years

10 ASBESTOS RELATED DISEASES Estimated work-related mortality from mesothelioma, 1999 to 2010

11 ASBESTOS RELATED DISEASES Notified asbestos disease by occupation Ministry of Health The Management of Asbestos in the Non-occupational Environment: Guidelines for Public Health Units: Revised edition 2013

12 ASBESTOS RELATED DISEASES Litigation and compensation related to asbestos disease in NZ is likely in the $100 s of millions and worldwide in the $100 s of billions.

13 Health risks UNDERSTANDING THE RISK - Amount of fibres inhaled - Frequency of exposure - Long periods of time

14 UNDERSTANDING THE RISK x1,000,000 historical industrial workers x 100-1,000 construction workers, tradespeople Workplace Exposure Standard (WES): 1 fibre/ml of air over 4 hrs (or 0.1 f/ml depending on the material*) x10 people living in cities x1 people living in rural areas (the average person has millions of fibres in their lungs from ambient environment)

15 ASBESTOS IN SOILS

16 ASBESTOS IN SOILS TO AIR Swartjes/Tromp, 2008.

17 Airborne asbestos concentration (fib/ml) ASBESTOS IN SOILS TO AIR Asbestos concentration in soil (% w/w) Swartjes/Tromp, 2008.

18 THE RELEASABLE ASBESTOS FIELD SAMPLER RAFS

19 FLUIDIZED BED ASBESTOS SEGREGATOR

20 ACTIVITY BASED SAMPLING Activity Based Sampling

21 RISK ASSESSMENT SAMPLING Control and Ambient Monitoring Occupational Monitoring

22 AIR SAMPLE ANALYSIS

23 MANAGING ASBESTOS Manufacturing facilitates Warehouses Sites with soil fill Land fills Site with an industrial history Vehicle maintenance facilities

24 PRE SITE PREPARATION Conduct a review of site and obtain a detailed site history Talk to site owner/manager and other occupants Review the work scope for potential to disturb asbestos

25 PRELIMINARY SITE WALKOVER Fibres from degraded AC roof.

26 PRELIMINARY SITE WALKOVER Stockpiles containing building materials

27 WHAT TO LOOK FOR Asbestos Waste in Soil

28 WHAT TO LOOK FOR Asbestos Waste in Soil

29 DUST CONTROL Control the creation and migration of dust during site activities

30 RESPIRATORY PROTECTION disposable P2 halfface Inspections of friable Sampling Drilling / sawing cement Removing nonfriable re-useable P2 halfface FAQs Self-fit tests Annual fit tests No facial hair Glasses re-useable P3 fullface Maintenance work near asbestos insulation Maintenance work involving friable asbestos full-face P3 supplied air

31 DECONTAMINATION

32 NEW REGULATIONS - ASBINS asbestos means (d) a material or article that is contaminated by a mineral specified in paragraph (a) asbestos dust has the meaning given to it in Schedule 1 asbestos dust means asbestos fibres in the air in a concentration exceeding the concentration that is set out in clause 2 for the particular form of asbestos, but only if (a) the fact that the fibres are asbestos is established by testing carried out in accordance with a method specified by a New Zealand accredited laboratory for the identification of asbestos; and (b) the fact that the concentration set out in clause 2 is exceeded is established by testing carried out in accordance with a method specified by a New Zealand accredited laboratory for the atmospheric testing of airborne asbestos fibre concentrations. asbestos-contaminated dust or debris or ACD means dust or debris that has settled within a workplace and is, or is assumed to be, contaminated with asbestos asbestos-contaminated soil means soil that is contaminated with asbestos or ACM

33 NEW REGULATIONS - ASBINS

34 QUESTIONS