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Concurrent:	Battle of Therum Battle of Feros Armstrong cluster campaign Battle of Virmire
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Project Wizard quarantine incident Part of the Eden Prime War
Peak 15 during the containment breach
Date:	17 June - 7 July 2183 CE (21 days)
Location:	Peak 15 / Noveria / Pax / Horse Head Nebula
Outcome:	Partial Rachni victory ERCS security forces overwhelmed Rachni unable to escape the facility and are contained Matriarch Benezia M'Soni, and later the Normandy Squad, arrive at Peak 15 Battle of Peak 15 begins
Belligerents Binary Helix Elanus Risk Control Services Supported by: Saren's Alliance Rachni Commanders Zev Cohen † Romero Ventralis Benezia M'Soni Herau I'Loak None Strength 270 security personnel 23rd Commando Company (latter half of the incident) 90 geth troopers (latter half of the incident) 8 geth destroyers (latter half of the incident) 5 geth assault drones (latter half of the incident) Roughly 10,000 rachni workers Roughly 3,000 rachni soldiers 4 or 5 rachni brood warriors Casualties 195 security killed Unknown. Largely minimal

"Before we knew what was happening, the bastards were clawing right into our command post. We had a lot more staff then...lost a lot of good people too."

— Romero Ventralis.

The Peak 15 containment breach, also known as the Project Wizard incident and the Rachni outbreak at Peak 15, was a massive containment failure at the Peak 15 research facility operated by Binary Helix. The outbreak began at exactly 10:00pm at night on June 17, 2183 CE when rachni workers escaped Lab 09A, and began to run amok, eventually leading to the release of more rachni. Having gone feral after being seperated from their queen, the rachni slaughtered most of the Binary Helix staff and ERCS security guards during their initial breakout, including Project Wizard's director, Zev Cohen. Code Blue was declared, and the entirety facility was put on lockdown, prompting Saren Arterius, the project's chief financier, to send Benezia M'Soni to discover what went wrong. The outbreak would later escalate into the Battle of Peak 15.