Pleasanton used to host three Naval Outlying Fields (NOLFs) that were attached to the Naval Air Station (NAS) in Livermore, which later became the lab. This information is taken from Web Link
The long/lat coordinates are not as accurate as I'd like but they give a general idea of where these runways were located.
"NOLF Cope, 3,200' runway, located at Pleasanton (37.68/-121.84)" - In the middle of a gravel quarry along Stanley across from Shadow Cliffs
"NOLF Rita-Butterworth, 3,000' runway, located at Pleasanton (37.7/-121.85)" - Somewhere around Staples Ranch area
"NOLF Spring Valley, 3,500' runway, located at Pleasanton (37.7/-121.9)" - Somewhere along Owens Dr near BART
Another interesting fact is that old railroad junctions and stops had names attached to them. Most people may be aware of Verona station, which was a stop near Verona Rd. for visitors to the Hearst Hacienda. The old railroad junction at the intersection of Valley Ave. and Stanley Blvd. was called Radum. If you use Google maps and type in these names it actually shows these locations.