1. “What do I do with this stuff…?” 1

2. List of chemicals and products commonly seen at Metro’s HHW/CEG facilities & their appropriate disposal categories. For example: Simply put, the purpose of the list is to turn…. 2

3. Into 3

4. 4

5. Began in 1992: (22 years! It’s old enough to vote and have a beer with us at the end of the conference.) Initial categories labels were derived from our first shipping contract The labels reflect the order of waste on those first contracts rather than making any inherent sense; E.g. “K”’s are acid, “L”’s are alkali It has been through at least 3 major revisions (2003)(2009) 5

6. 2013 Revision 6

7. 1582 Items 37 Categories 6 Columns24 Pages 6 Copies / Facility 7

8. Not that I didn’t try…. 8

9. 9

10. 88 million organic & inorganic substances on CAS 310,000 regulated chemicals on Chemlist 59.6 million individual single step reactions detailed since 1840 https://www.cas.org/content/chemical-substances 10

11. Hazmat Table RQ Table P-List 11

12. Chemical or Product Name* Metro Disposal Category P Listing DOT CFR 49 RQ Data D.O.T. Shipping Info Hazard Handling Notes 12

13. 1 -- Sorting Making order from chaos 2 -- CEG Program Basis for cost codes 3 -- Shipping CFR 49 172.101 Hazard Class & Reportable Quantity 13

14. Waste received from customer 1). Cart headed Inside. OR 2). Sorted to an appropriate outside location Inside Cart 1). Labeled Products looked up in MWL OR 2). Unknowns go to the Lab for ID Lab pack Every item lab packed has a category from the MWL 14

15. From the Customer Outside Paint & Stains LatexPaint Care Fluorescent bulbs Oil & Antifreeze FlammablesLoose Pack Crush & Pour Off InsideMWL 15

16. Looked up in Master Waste List Ends up back outside Cleaners -> “G” CorrosiveAcid -> “K”Alkali -> “L” Oxidizer – “M” Poison -> “N” Laboratory Reactive -> “R1” Organic Peroxides -> “R2” 16

17. Acids Flammable – “K1” Organic – “K2” Inorganic – “K3” Nitric Acid – “K4” Alkalis Solid – “LD” Liquid – “L” Oxidizers Solid – “MD” Liquid – “M” Some subsets serve a shipping function, (e.g. the acids) Some subsets serve a cost-saving function (the liquid vs. solid distinctions) 17

18. Poisons/Toxic Flammable – “N1” GeneralLiquid – “N2”Solid – “N2D” Corrosive – “N3” Inhalation Hazards Cyanides – “N4C” Other – “N4” Special Provision – “N4SP” 18

19. “F” – Forbidden (e.g. Lead Azide) “See Lead ASAP” (e.g. anhydrous ether) “XXX” (e.g. phosphorus) R1 – Organic Peroxides R2 - Reactive 19

20. CustomerOutside Flammable Crush & Bulk Pour off & Bulk Loosep ack Fluore scent light Oil or Antifre eze Paint Latex Paint Care Inside Cart – MWL Sort Altern ate Fuel (Back Outsid e) G -Waste For Solidifi cation Cleane r & Waste Latex CorrosiveAcid Organi c Inorganic Nitric Acid >70% K4 All other K3 Flamm able (K1) Alkali LiquidSolid Oxidizer SolidLiquid Poison Flamm able N1 Corros ive N2 Poison by inhalation Cyanid e Liquid Cyanid e Solid All Other (e.g. Strych nine) Neithe r Flamm able or Corros ive Fertiliz er (<21,21, 21) Fertiliz er (>21,21, 21 or with Moss Kill and/or 2,4 D) Laboratory Ammo, Explosi ves, etc Unide ntified Reactive Water Reacti ve Sponta neousl y Comb ustible Flamm able Solid Organi c Peroxi de All of these categories mean that… 20

21. Product Enters the Facility Active Ingredient is looked up in MWL MWL Category is written on product Product is packed into a drum 21

22. Is the item P-Listed? Advice to the customer Safety notice on the receiving invoice Does it have any special handling notes? Disposal Category is linked to CEG program cost codes 22

23. Do we have a Reportable Quantity listed? Do the listed shipping notes match the characteristics of the labpack list? 23

24. Committee is formed every few years Moving towards an every year review Each facility keeps an ongoing list of changes needed/desired So, how do we put this thing together, add new stuff, update old entries, etc, etc.? Types of references used: http://www.sigmaaldrich.com/ Physician’s Desk Reference CFR 49 171.101 HazMat Table Lab ID results 24

25. Discussion: There is a lot of this. Reading MSDSs GHS will make this a little easier Real life experience: In what forms do we really see this stuff? E.g. Household hydrogen peroxide (3%) is a mouthwash (G-Waste). 55% H2O2 is a different story. (R2) Frequency of chemical visit We don’t see a lot of Uranium Hexafluoride, ergo it is not on the list How will it be treated for disposal: We recently created “N3 Toxic Metal”, in order to sequester these metals from the environment, rather than just having the pH of the solution neutralized and released back to the water supply. 25

26. Ease of Access As the list gets longer, and incorporates more data we try to use more visual clues: Alternating shadowed lines Color coded unusual categories Highlighted P-Listed entries When we get anhydrous ether we want to make its danger clear and immediate Explosives & peroxide formers are on a bright red background Reactive Inhalation hazards are in purple. (We used to use baby blue, but that didn’t really scream “DANGER”.) Safety 26

27. The Master Waste List serves to help employees determine which of our categories is best for the disposal of many different waste materials. It is a living document, meant to be updated, questioned, & revised.As it has grown in size its use to the facilities has expanded.Over time it has become unwieldy and somewhat clumsy to use. 27

28. Jim Quinn Denise Hays Deb Humphrey Kari Meyer Chelsea Althauser George Lee Michael Allen Hazardous Waste Specialist Metro South Household Hazardous Waste (503)-655-0330 Michael.Allen@oregonmetro.gov 28

29. The multi-verse of possible MWLs 29

30. As it has grown, with more entries, more columns, generally speaking more data, the MWL has become more useful to more facets of the HHW/CEG facilities. More and more the limitations of a simple excel spreadsheet list are becoming apparent: Different concentrations need multiple entries Synonyms require multiple entries (and multiple maintenance) Classification is often based on pure product, not the form encountered. Handling notes are necessarily terse Shipping data is sporadic Links to “P-list” and “RQ” Tables are not “live” The list is far from perfect, and given the 80+ million chemicals in the world, and growing, it never will be. However, here are some possible futures: 30

31. Each facet of the operation gets only the data it needs. Multiple sources to update and keep current 31

32. Single Database Sorting Data CEG pricing Data Additional Shipping Data Highly Flexible Harder to access, easier to maintain. Preferable with touch screen support throughout the facilities 32

33. User Needs Shipping Data CEG Data Sorting Data This really could be done with either of the two previous options. With our own consolidated database it would be easy, but perhaps not as up to date. Using outside databases in addition to a simplified MWL, reports would be more current, but produced less easily 33