In an effort to identify the woman, whose remains were along Dublin Canyon Road, Pleasanton police are turning to a forensic dentist.
Attempts to match remains with such traditional databases as DNA and fingerprints were unsuccessful, said Lt. Jeff Bretzing.
and photos released of jewelry the woman was wearing also unearthed no leads.
A forensic dentist will perform a detailed analysis on the woman's teeth to, hopefully, aid in solving the case, he said.
Police were called to the Dublin Canyon site at 11 a.m. on that Thursday after a caller reported a suspicious-looking trash can sitting in the road.
The receptacle in which the woman was discovered matches no municipality, Bretzing said.
Police are attempting to track the container's origin, however, it is a generic type available at many hardware stores, he said.
The Alameda County coroner's bureau , and although the case is being handled as a homicide, no cause or time of death was determined due to the body's decomposition, he said.
The woman's was likely in her 20s, but her age could span from 18 to 40 years old, police said.
The coroner's office determined the woman was most likely Asian or Hispanic with shoulder-length dark hair, was 5 feet 6 inches tall and weighed about 130 pounds.
She was found wearing an Old Navy shirt and pajama bottoms. She was also wearing blue fingernail polish, red toenail polish and had three ear piercings in each ear with distinctive earrings. She had no tattoos or other distinctive markings.
Anyone with information about the case should call Pleasanton police at (925) 931-5100.
Reporting by Tanya Rose contributed to this story.