Additional Information (if any): Clint Seymour was a real person and the name behind a real cause, but his memory and the plaques associated with them are in the Mt. Lebanon, Pennsylvania area, not Alameda, CA. See Clint Seymour Field.
Are you able to provide a photo or Scaniverse splat showing this Wayspot doesn’t exist at this location? There’s no Street View, so more evidence is going to be needed to have it removed.
Also, these plaques appear to be different in design, as this is the photo for the Wayspot at the above location: