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“What do I do with this stuff…?”

The Master Waste List

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So, what is the Master Waste List&

What purpose does it serve ?

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….

ethylene dibromide

N4-SP 1 6.1 PG I PIH CEG: R2X

This

Into

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This…

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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 contractThe 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

History

(2003) (2009)

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Before reaching its current form

Chemical NameMetro

CategoryP list? RQ Shipping Handling Notes

1,4-dioxane XXX**Explosive!**Peroxide Former

1-acetyl-2-thiourea N2 Yes2,4,5-T (2,4,5-trichlorophenoxyacetic acid) N22,4,5-TP (Silvex) N2 1002,4-D (2,4-dichlorophenoxyacetic acid) N2 1002,4-dinitrobenzene sulfenyl chloride R22,4-dinitrophenylhydrazine (different from 2,4-D) R22,4-DP (2,4-dichlorophenoxypropionic acid) N2 1002-bromo-2-chloro-1,1,1-triflouroethane AF 9, UN 33342-pivalyl-1.3-indandione (pival, pindone, pivalyn) N23-(chloropropenyl)benzene L4,4'-methylenebis (o-chloroaniline) L5-(aminomethyl)-3-isoxazolol N2 YesAAtrex (labpack as Atrazine) N2abamectin N2acenaphthene N2 100acenaphthylene N2 >100acephate N2acetaldehyde AF >100 Peroxide formeracetamide N2 100acetanilide N2acetic acid K2acetic acid, glacial K2acetic anhydride R2aceto carmine N2acetoarsenite N2acetocyacetone (pentadione) AF UN 2310 3acetone AFacetone cyanohydrin N4-SP Yes 10 6.1 PG I PIH Zone Bacetone thiosemicarbazide N2

2013 Revision

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The Master Waste Listis BIG

1582 Items

37 Categorie

s

6 Columns 24 Pages

6 Copies / Facility

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Too big for over-achieving interns to take home and try to memorize…

Not that I didn’t try….

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And yet not big enough….

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In many ways, it is a losing battle…There are:

•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

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Every Revision incorporates more data into the Master Waste List…

Hazmat T

able RQ Table

P-List

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Chemical or Product

Name*

Metro Disposal Category

P Listing

DOT CFR 49 RQ Data

D.O.T. Shipping

Info

Hazard Handling

Notes

The MWL Currently Contains:

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1 -- SortingMaking order from chaos

2 -- CEG ProgramBasis for cost codes

3 -- Shipping CFR 49 172.101 Hazard Class & Reportable Quantity

Serves 3 Main Operational Purposes:

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The primary function of the list is to aid in our sorting process…

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

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From the Customer

Outside

Paint & Stains

Latex Paint Care

Fluorescent bulbs

Oil & Antifreeze

Flammables

Loose Pack

Crush & Pour Off

Inside

MWL

Outside Sorting

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Looked up in Master Waste List

Ends up back

outside

Cleaners -> “G”

Corrosive

Acid -> “K”

Alkali -> “L”

Oxidizer – “M”

Poison -> “N”

Laboratory

Reactive -> “R1”

Organic Peroxides -

> “R2”

Inside Sorting

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We have a further breakdown into Category Subsets

Acids

Flammable – “K1”

Organic – “K2”

Inorganic – “K3”

Nitric Acid – “K4”

Some subsets serve a shipping function, (e.g. the acids)Some subsets serve a cost-saving function(the liquid vs. solid distinctions)

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Poisons also get divided intoCategory Subsets

Poisons/Toxic

Flammable – “N1”

General

Liquid – “N2”

Solid – “N2D”

Corrosive – “N3”

Inhalation Hazards

Cyanides – “N4C”

Other – “N4”

Special Provision –

“N4SP”

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High Hazard or Special Categories

“F” – Forbidden (e.g. Lead

Azide)

“See Lead ASAP” (e.g. anhydrous

ether)

“XXX” (e.g.

phosphorus)

R1 – Organic Peroxides

R2 - Reactive

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Customer

OutsideFlammable

Crush &

Bulk

Pour off &

Bulk

Loosepack

Fluorescent light

Oil or Antifree

ze

Paint

Latex

Paint Care

Inside Cart – MWL Sort

Alternate Fuel (Back

Outside)

G -Waste

For Solidificatio

n

Cleaner &

Waste

Latex

Corrosive

Acid

Organic

Inorganic

Nitric Acid >70% K4

All other K3

Flammable (K1)

Alkali

Liquid

Solid

Oxidizer

Solid

Liquid

Poison

Flammable N1

Corrosive N2

Poison by inhalation

Cyanide Liqu

id

Cyanide Solid

Neither

Flammable

or Corrosive

Fertilizer (<21,21,21)

Fertilizer

(>21,21,21 or with Moss Kill

and/or 2,4 D)

Laboratory

Ammo, Explosives

, etc

Unidentified

Reactive

Water Reactive

Spontaneously

Combustible

Flammable Solid

Organic Peroxide

Putting it all together

All of these categories mean that…

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Product Enters the Facility

Active Ingredient is looked up in MWL

MWL Category is written on product

Product is packed into a drum

Everything that goes in a drum has a category in the MWL

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The MWL is also CEG Quick Reference

Is the item P-Listed?

Does it have any special handling notes?

• Advice to the customer• Safety notice on the receiving invoice

Disposal Category is linked to CEG program cost codes

Do we have a Reportable Quantity listed?

Do the listed shipping notes match the characteristics of the labpack list?

And a Shipper Quick Reference

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Researching the MWL

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

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Areas of discussionDiscussion: 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.

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Ease of AccessAs 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”.)

Readability & Organization of the MWL

Safety

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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.

MWL Summary

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Jim Quinn

Denise Hays

Deb Humphrey

Kari Meyer

Chelsea

Althauser

George Lee

Thank you!

Michael AllenHazardous Waste SpecialistMetro South Household Hazardous Waste(503)-655-0330Michael.Allen@oregonmetro.gov

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The multi-verse of possible MWLs

Possible Futures

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Serving Many Masters

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:

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Split the MWL into separate entities

Sorting

CEG

Shipping

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

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Transition to a database format

Single Database

Sorting Data

CEG pricing Data

AdditionalShipping

Data

•Highly Flexible•Harder to access, easier to maintain.•Preferable with touch screen support throughout the facilities

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Produce Separate Documents for each operational facet From multiple Sources

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