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Oakland Unified School District

Environmental Safety at AWE & EnCompass


  • On advice of the Alameda County Environmental Health Department, OUSD tested soil vapor at numerous outdoor locations on the Acorn Woodland/EnCompass Campus.
  • The results of that testing showed the elevated levels of three chemicals, Perchloroethylene (PCE), benzene, and Trichloroethylene (TCE).
  • There is no known risk at this time; however, PCE, benzene, and TCE are carcinogens that may cause harm with long-term exposure in the air.
  • The State agency that oversees investigations and cleanup of hazardous materials releases to the environment did not recommend closing the Acorn/EnCompass campus or imposing access restrictions to buildings.
  • The next step is to test the indoor air to see if these chemicals are also present inside the school buildings.
  • OUSD will test the air inside all buildings across the campus.
  • Indoor air testing is expected to begin on or around September 15/16 - final results are expected to be made public by mid to late November.


Oakland Unified School District  

Rebecca Littlejohn, Risk Manager,

City of Oakland

Ed Reiskin, Assistant City Administrator,

Jamie Turbak, Library Director,

County of Alameda

Nate Miley, Supervisor, District 3,

You can also visit and send a message to Asa Kamer

Office of State Assembly Member Rob Bonta

Marcella Cortez, District Director,

Office of State Senator Nancy Skinner

Margaret Hanlon-Gradie, Deputy Chief of Staff,

Alameda County Department of Environmental Health

Dilan Roe, Chief - Land & Water Division, 

California Department of Toxic Substances Control

Cheryl Prowell, Senior Hazardous Substances Engineer,

Bay Area Air Quality Management District (For Outdoor Air Questions)

Henry Hilken, Director of Planning and Research, 

Resources & Communications


03/11/21 Community Meeting: Recording | Presentation

03/10/21 Community Message (link)

03/04/21 Community Message (link) 02/10/21 Community Message (link)     2020 12/07/20 Community Message (link) 11/19/20 Community Meeting: Recording | Presentation 11/18/20 Community Message (link)   11/16/20 Community Message (link) 09/11/20 Community Message (link)    

ACORN Woodland EnCompass Testing Update SLIDES

ACORN Woodland EnCompass Testing Update VIDEO


Benzene Fact Sheet

PCE Fact Sheet

TCE Fact Sheet

Frequently Asked Questions (FAQs)

Acorn Woodland & EnCompass FAQs - English

Acorn Woodland & EnCompass FAQs - Spanis

Acorn Woodland & EnCompass FAQs - Arabic

Community Letters

09.02.20 AWE & EnCompass Community Letter


09.01.20 AWE & EnCompass Community Lette

08.27.20 AWE & EnCompass Community Letter