Biological Waste Processing Plant

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{{Location Infobox
|image=FileC2a40001.jpg|250px
|image2=
|name=Biological Waste Processing Plant
|constructed=
|destroyed=200-, during the Black Mesa Incident
|location=Black Mesa Research Facility
|builder=
|era=Black Mesa Incident
|affiliation=Black Mesa
|maps=c2a4, c2a4a, c2a4b, c2a4c
|designer=Dario Casali{{Wikipedia|Casali_brothers|Casali brothers}} (level design)
|hidei=
|hideu=
|hideg=
}}
The '''Biological Waste Processing Plant''' is a Black Mesa Research Facility area covering the ''Half-Life'' chapter ''Residue Processing''. 

==Overview==
FileHL BMRF ResidueProcessing.jpg|Hazardous waste tanks inside the plant.|left|thumb|200px

*The area disposes of and process Black Mesa's wastes (both organic and hazardous materials) through large tanks and an endless conveyor belt network. The area is mostly populated with Classic Headcrab|Headcrabs, Barnacles, and a few Bullsquids. It is connected to the Alien Research Labs' ground floor and is apparently located not far from Sector E Materials Transport.

*It is first mentioned by Black Mesa Announcement System in Sector D in a message asking for an "emergency clean-up team." This probably refers to a chemical or toxic spill, though the plant seems to be in proper working order when visited in-game. 

*Upon reaching the area during the ''Half-Life'' chapter ''Residue Processing'', Gordon Freeman escapes certain death from a garbage compactor located near the processing plant, and reaches it from the outside. He then must work his way through a network of waste processing machines in order to progress further towards the Lambda Complex.

==Behind the scenes==

The name of that area is given in one of several unused Black Mesa Announcement System Black Mesa Announcement System/Quotes|announcements found in the file "sentences.txt" that were to be heard in Sector D's Sector D Center|Administration Center. The plant is also mentioned as a location sharing its announcements with that of the Alien Research Labs. The related sentences use the prefix "C2A4", which is the name of the first map of the plant.

==Gallery==

FileHalf08.jpg|Early screenshot of the conveyor belt area.
FileHoundeye backleg.jpg|Houndeye standing on its back leg in the first map of the plant in an early ''Half-Life'' build.
FileResidue Processing first.jpg|The plant as first seen by Gordon Freeman after escaping the garbage compactor.
FileResidue Processing early.png|The same spot in an early version of the game.


==List of appearances==
*''Half-Life'' {{1st}}

==References==
{{Reflist}}

{{succession
|title=''Half-Life'' story arc journey
|before=Sector E E|Sector E Materials Transport
|after=Alien Research Labs
}}
{{Locations}}
{{Black Mesa}}
CategoryBlack Mesa Research Facility locations
CategoryLocations
CategoryHalf-Life