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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)[email protected]
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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