Check out Santa Clara County Planning web site. There are areas around Shoreline. (Interesting that this is also a wildlife sanctuary...)
From one doc on the site:
"Initial review of the environmental document technical report on hazardous materials
indicates contamination at an EPA Superfund site north and west of Shoreline Blvd.
Geotechnical borings will be required in the affected area. Permits to perform the drilling
operations may be required from the Santa Clara Valley Water District and Regional Water
Quality Control Board. Meetings with the Water District and Water Quality Control Board
are being scheduled to determine permit requirements. Drilling is expected to begin in
Although I did not find an actual map, you should be able to email/call the planning organization and get one. The other possibility (if this hasn't already been provided) is a hazard report. You can call PROPERTY ID 1800-626-0106 http://www.propertyid.com
or JCP Reporting http://www.jcpreports.com/,
(510) 580-2000. They may be able to help with maps.