Fenceline Monitoring Homepage
of the Shoreline Environmental Alliance


In July of 1997, The Tosco Oil refinery in Rodeo, CA, USA completed the installation of its new "fenceline monitoring system". This new monitoring network, which incorporates ten optical remote sensing devices, is designed to detect and track concentrations of a wide range of hazardous gases, and to provide early warning to the surrounding communities in the event of a chemical emergency.

This system is clearly the most advanced and comprehensive emissions monitoring network in place at an industrial facility in the world today. Installation of the new monitors came about as part of an agreement reached between the refinery and local community groups in the aftermath of a disastrous chemical release which occured in 1994. (It was a UNOCAL facility at the time.)

You will find in this website a complete description of, and detailed emissions data from, the new fenceline monitoring network. We have also included the complete text of our historic "Good Neighbor Agreement", a brief history of how it came into existence, and much much more.

Unfortunately for our community, we got the new monitors only after hundreds of people suffered injuries from a chemical release which was allowed to continue unabated for 16 days. We don't think it should have to be that way.


Many of the documents and charts available here are posted in the Adobe .pdf format. Viewing these items will require that you have the Acrobat Reader Plug-In installed on your browser. If you do not already have this wonderful tool, we suggest you do yourself a favor and download it now by clicking on the icon above.





We would like to thank The Rose Foundation in Oakland, and The Crockett Community Foundation in Crockett. Without their financial support, this website would not have been possible. To find out more about SEA, and what you can do to help us, please click on the link below.

About SEA