Oh, also good stuff on outfitting the C1D1 room yourselves you can save tens of thousands of dollars doing that! As long as you have an electrician and engineer to ensure compliance
Getting a used UL certified C1D1 is not too expensive. You still need (at least one) PE to inspect and for installation, and for air handling systems. I am sure they have hundreds of used C1D1s in Medford for pennies on the dollar.
Didn’t realize there were so many used booths out there! I was gauging off new booths, shit goes for like 30k on the low end. Makes sense though labs go out of business all the time and sell it for half price
Last time I was up in Eureka, I saw a producer purchase three outdoor 20’ Conex-conversion C1D1s for $10k. They were in decent condition, and needed another $10k in parts/repairs. They got free vacuum ovens too for the low low price of “Can you get this shit out of here?”
Never underestimate the need for failed businesses to get some cash on hand.
If I were you, I’d classify the space between Rosin and Quarantine room as C1D2 so your fire chief will be happy. Technically, your doorway swing zone can count, but I’d go further for custom buildouts.