Asbestos and Regulated Wastes in Bridge Demo s and Rehab s. Office of Environmental Stewardship Minnesota Department of Transportation July 2017

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1 Asbestos and Regulated Wastes in Bridge Demo s and Rehab s Office of Environmental Stewardship Minnesota Department of Transportation July 2017

2 MN Department of Transportation Maintains approximately 4,800 bridges.

3 Bridge Demolition History 2002 Minnesota Pollution Control Agency (MPCA) notified MnDOT bridges needed to be assessed for asbestos and other regulated materials prior to demolition. WisDOT was notified at approx. the same time.

4 MnDOT Approved Companies Assessment and Oversight Asbestos Abatement Regulated Waste Removal

5 Assessment and Oversight MnDOT policy requires a Certified Hazardous Materials Manager (CHMM) not required in regs. CHMM

Demolition Manual on Web http://www.dot.state.

6 Demolition Manual on Web regulatedmaterials/index.html

7 Environmental Regulations Covered Minnesota Pollution Control Agency Minnesota Department of Health U.S. Department of Transportation (Hazardous Materials)

8 What is asbestos? Asbestos is the name for a group of minerals that occur naturally in the ground. Three types of asbestos were commonly used to manufacture products Chrysotile CRY-so-tile Amosite AM-o-site Crocidolite crow-sid-o-lite

9 Chrysotile white asbestos wavy, flexible white fibers 90 to 95 percent of the asbestos used in the U.S. From MDH

10 Amosite brown asbestos straight, light gray or brown fibers. From MDH

11 Crocidolite blue asbestos straight blue fibers. From MDH

12 From MDH Where does asbestos come from? Open mine pit Mirny Diamond Mine, Russia

13 Leading producers of asbestos Russia, China, Brazil, and Kazakhstan.

14 Asbestos Containing Materials US production World production World trade

15 Asbestos Diseases Asbestosis scarring of the lung tissue This leads to inadequate oxygen intake to the blood latency period of 15 to 30 years Mesothelioma cancer of the pleural lining almost always fatal latency period of 30 to 40 years Lung Cancer tumor of the bronchi covering latency period of 20 to 30 years

16 Prior to demolition/rehabilitation Bridges must be assessed for asbestos and other regulated material/waste. For MnDOT, this is done a minimum of a year prior to letting

17 What Are some Examples Regulated ASBESTOS LEAD POLYCHLORINATED BIPHENYL (PCB S) MERCURY ELECTRICAL COMPONENTS Materials/Wastes?

18 Asbestos Can Be In The Following: Membrane in Asphalt Overlays Joint Compounds/Sealents Gaskets Water Proofing Water Main Insulation Transite Piping Electrical/Putties

19 Membrane Between Asphalt Overlay and Deck (concrete overlay not included)

20 Joint Compound

21 Gasket

22 Water Proofing Behind wing walls and abutments Spray on Three-ply

23 Water Main Insulation

24 Transite Pipe

25 STOP WORK! When Digging

26 Electrical/Putties

27 Asbestos Removal ALL ASBESTOS MUST BE REMOVED AND DISPOSED BY A LICENSED ASBESTOS ABATEMENT CONTRACTOR!!!

28 PCB Caulk and Bit Felt If < 50 PPM MPCA permitted Lined Landfill If > 50 PPM Treat as Hazardous Waste Must check for all built prior to 1980

29 Lead Paint > 0.5% or 5000 ppm Need to know for Metal Recycler

30 Lead Plates Separated and Scrapped Must have paper trail.

31 Treated Woods MPCA Permitted Landfill - Sanitary - Industrial Must have paper trail

32 Mercury Containing Devices: HID lamps Fluorescent lamps

33 PCB s in Electronics: Ballasts Capacitors Transformers

34 Electrical Components Message Boards LED Lamps

35 Certified Asbestos Inspector Assessment Report Findings Quantities Locations

36 Bridge Paint Removal Operations No assessment report required MDH Cert Asbestos Insptr not required Must have knowledge if paint is regulated for lead and/or PCB s.

37 PCB in Paint Only check if Paint will be separated from structure. Abrasive blasting Scraping Paint system is older than Regulated as Hazardous Waste if >50ppm If paint left on structure, do not need to check

Work Type Definition

Work Type Definition Page 1-6 details the work type definition. In order to become pre-qualified for this work type, please see the Work Type Submittal Requirements on pages 7-8. I. Description A. Work